From 9a7f43d7ff4426a843b26762ca48a1a81a89bada Mon Sep 17 00:00:00 2001 From: Anas Nashif Date: Sun, 4 Nov 2012 06:54:55 -0800 Subject: Imported Upstream version 1.3.0 --- CHANGES | 672 +++ CREDITS | 155 + ChmodBPF/ChmodBPF | 33 + ChmodBPF/StartupParameters.plist | 4 + INSTALL.txt | 403 ++ LICENSE | 19 + Makefile.in | 735 +++ README | 105 + README.Win32 | 46 + README.aix | 81 + README.dag | 114 + README.hpux | 254 + README.linux | 108 + README.macosx | 74 + README.septel | 50 + README.sita | 64 + README.tru64 | 49 + SUNOS4/nit_if.o.sparc | Bin 0 -> 5212 bytes SUNOS4/nit_if.o.sun3 | Bin 0 -> 4267 bytes SUNOS4/nit_if.o.sun4c.4.0.3c | Bin 0 -> 5291 bytes TODO | 35 + VERSION | 1 + Win32/Include/Gnuc.h | 46 + Win32/Include/addrinfo.h | 146 + Win32/Include/arpa/nameser.h | 349 ++ Win32/Include/bittypes.h | 89 + Win32/Include/cdecl_ext.h | 37 + Win32/Include/inetprivate.h | 67 + Win32/Include/ip6_misc.h | 163 + Win32/Include/net/if.h | 230 + Win32/Include/net/netdb.h | 164 + Win32/Include/net/paths.h | 105 + Win32/Include/sockstorage.h | 38 + Win32/Prj/libpcap.dsp | 168 + Win32/Prj/libpcap.dsw | 29 + Win32/Src/ffs.c | 54 + Win32/Src/gai_strerror.c | 83 + Win32/Src/getaddrinfo.c | 1129 +++++ Win32/Src/getnetbynm.c | 44 + Win32/Src/getnetent.c | 119 + Win32/Src/getopt.c | 121 + Win32/Src/getservent.c | 125 + Win32/Src/inet_aton.c | 61 + Win32/Src/inet_net.c | 101 + Win32/Src/inet_pton.c | 71 + aclocal.m4 | 1037 ++++ arcnet.h | 52 + atmuni31.h | 87 + bpf/net/bpf_filter.c | 686 +++ bpf_dump.c | 62 + bpf_image.c | 302 ++ chmod_bpf | 19 + config.guess | 1502 ++++++ config.h.in | 314 ++ config.sub | 1708 +++++++ configure | 9080 ++++++++++++++++++++++++++++++++++++ configure.in | 1471 ++++++ dlpisubs.c | 358 ++ dlpisubs.h | 28 + etherent.c | 174 + ethertype.h | 122 + fad-getad.c | 297 ++ fad-gifc.c | 433 ++ fad-glifc.c | 386 ++ fad-null.c | 65 + fad-sita.c | 61 + fad-win32.c | 327 ++ gencode.c | 8535 +++++++++++++++++++++++++++++++++ gencode.h | 343 ++ grammar.y | 697 +++ ieee80211.h | 146 + inet.c | 933 ++++ install-sh | 250 + lbl/os-aix4.h | 25 + lbl/os-hpux11.h | 25 + lbl/os-osf4.h | 28 + lbl/os-osf5.h | 32 + lbl/os-solaris2.h | 26 + lbl/os-sunos4.h | 215 + lbl/os-ultrix4.h | 39 + llc.h | 69 + missing/snprintf.c | 632 +++ mkdep | 109 + msdos/bin2c.c | 43 + msdos/common.dj | 80 + msdos/makefile | 184 + msdos/makefile.dj | 152 + msdos/makefile.wc | 131 + msdos/ndis2.c | 860 ++++ msdos/ndis2.h | 559 +++ msdos/ndis_0.asm | 188 + msdos/pkt_rx0.asm | 197 + msdos/pkt_rx1.s | 155 + msdos/pktdrvr.c | 1436 ++++++ msdos/pktdrvr.h | 153 + msdos/readme.dos | 162 + nametoaddr.c | 511 ++ nlpid.h | 58 + optimize.c | 2347 ++++++++++ org.tcpdump.chmod_bpf.plist | 16 + packaging/pcap.spec.in | 77 + pcap-bpf.c | 2732 +++++++++++ pcap-bpf.h | 47 + pcap-bt-linux.c | 374 ++ pcap-bt-linux.h | 40 + pcap-can-linux.c | 264 ++ pcap-can-linux.h | 35 + pcap-canusb-linux.c | 428 ++ pcap-canusb-linux.h | 37 + pcap-common.c | 1158 +++++ pcap-common.h | 25 + pcap-config.1 | 74 + pcap-config.in | 89 + pcap-dag.c | 1141 +++++ pcap-dag.h | 108 + pcap-dlpi.c | 1708 +++++++ pcap-dos.c | 1479 ++++++ pcap-dos.h | 227 + pcap-enet.c | 235 + pcap-filter.manmisc.in | 962 ++++ pcap-int.h | 495 ++ pcap-libdlpi.c | 404 ++ pcap-linktype.manmisc.in | 50 + pcap-linux.c | 5561 ++++++++++++++++++++++ pcap-namedb.h | 42 + pcap-netfilter-linux.c | 468 ++ pcap-netfilter-linux.h | 35 + pcap-nit.c | 347 ++ pcap-null.c | 53 + pcap-pf.c | 604 +++ pcap-savefile.manfile.in | 127 + pcap-septel.c | 290 ++ pcap-septel.h | 15 + pcap-sita.c | 980 ++++ pcap-sita.h | 10 + pcap-sita.html | 943 ++++ pcap-snf.c | 306 ++ pcap-snf.h | 2 + pcap-snit.c | 426 ++ pcap-snoop.c | 413 ++ pcap-stdinc.h | 89 + pcap-tstamp.manmisc.in | 132 + pcap-usb-linux.c | 883 ++++ pcap-usb-linux.h | 40 + pcap-win32.c | 852 ++++ pcap.3pcap.in | 883 ++++ pcap.c | 1591 +++++++ pcap.h | 45 + pcap/bluetooth.h | 48 + pcap/bpf.h | 1289 +++++ pcap/ipnet.h | 43 + pcap/namedb.h | 89 + pcap/pcap.h | 462 ++ pcap/sll.h | 129 + pcap/usb.h | 143 + pcap/vlan.h | 46 + pcap_activate.3pcap | 97 + pcap_breakloop.3pcap | 105 + pcap_can_set_rfmon.3pcap | 64 + pcap_close.3pcap | 41 + pcap_compile.3pcap.in | 72 + pcap_create.3pcap | 74 + pcap_datalink.3pcap.in | 41 + pcap_datalink_name_to_val.3pcap | 48 + pcap_datalink_val_to_name.3pcap | 44 + pcap_dump.3pcap | 53 + pcap_dump_close.3pcap | 39 + pcap_dump_file.3pcap | 40 + pcap_dump_flush.3pcap | 45 + pcap_dump_ftell.3pcap | 44 + pcap_dump_open.3pcap.in | 87 + pcap_file.3pcap | 59 + pcap_fileno.3pcap | 68 + pcap_findalldevs.3pcap | 186 + pcap_freecode.3pcap | 45 + pcap_get_selectable_fd.3pcap | 129 + pcap_geterr.3pcap | 53 + pcap_inject.3pcap | 90 + pcap_is_swapped.3pcap | 42 + pcap_lib_version.3pcap | 41 + pcap_list_datalinks.3pcap.in | 64 + pcap_list_tstamp_types.3pcap.in | 70 + pcap_lookupdev.3pcap | 62 + pcap_lookupnet.3pcap | 65 + pcap_loop.3pcap | 157 + pcap_major_version.3pcap | 56 + pcap_next_ex.3pcap | 107 + pcap_offline_filter.3pcap | 57 + pcap_open_dead.3pcap.in | 52 + pcap_open_live.3pcap | 89 + pcap_open_offline.3pcap.in | 82 + pcap_set_buffer_size.3pcap | 47 + pcap_set_datalink.3pcap | 53 + pcap_set_promisc.3pcap | 48 + pcap_set_rfmon.3pcap | 49 + pcap_set_snaplen.3pcap | 46 + pcap_set_timeout.3pcap | 47 + pcap_set_tstamp_type.3pcap.in | 65 + pcap_setdirection.3pcap | 71 + pcap_setfilter.3pcap | 54 + pcap_setnonblock.3pcap | 75 + pcap_snapshot.3pcap | 44 + pcap_stats.3pcap | 99 + pcap_statustostr.3pcap | 43 + pcap_strerror.3pcap | 42 + pcap_tstamp_type_name_to_val.3pcap | 45 + pcap_tstamp_type_val_to_name.3pcap | 45 + ppp.h | 58 + runlex.sh | 235 + savefile.c | 394 ++ scanner.l | 466 ++ sf-pcap-ng.c | 1109 +++++ sf-pcap-ng.h | 31 + sf-pcap.c | 618 +++ sf-pcap.h | 36 + sunatmpos.h | 45 + tests/filtertest.c | 266 ++ tests/findalldevstest.c | 131 + tests/nonblocktest.c | 226 + tests/opentest.c | 216 + tests/reactivatetest.c | 84 + tests/selpolltest.c | 350 ++ 222 files changed, 81629 insertions(+) create mode 100644 CHANGES create mode 100644 CREDITS create mode 100755 ChmodBPF/ChmodBPF create mode 100644 ChmodBPF/StartupParameters.plist create mode 100644 INSTALL.txt create mode 100644 LICENSE create mode 100644 Makefile.in create mode 100644 README create mode 100644 README.Win32 create mode 100644 README.aix create mode 100644 README.dag create mode 100644 README.hpux create mode 100644 README.linux create mode 100644 README.macosx create mode 100644 README.septel create mode 100644 README.sita create mode 100644 README.tru64 create mode 100644 SUNOS4/nit_if.o.sparc create mode 100644 SUNOS4/nit_if.o.sun3 create mode 100644 SUNOS4/nit_if.o.sun4c.4.0.3c create mode 100644 TODO create mode 100644 VERSION create mode 100644 Win32/Include/Gnuc.h create mode 100644 Win32/Include/addrinfo.h create mode 100644 Win32/Include/arpa/nameser.h create mode 100644 Win32/Include/bittypes.h create mode 100644 Win32/Include/cdecl_ext.h create mode 100644 Win32/Include/inetprivate.h create mode 100644 Win32/Include/ip6_misc.h create mode 100644 Win32/Include/net/if.h create mode 100644 Win32/Include/net/netdb.h create mode 100644 Win32/Include/net/paths.h create mode 100644 Win32/Include/sockstorage.h create mode 100644 Win32/Prj/libpcap.dsp create mode 100644 Win32/Prj/libpcap.dsw create mode 100644 Win32/Src/ffs.c create mode 100644 Win32/Src/gai_strerror.c create mode 100644 Win32/Src/getaddrinfo.c create mode 100644 Win32/Src/getnetbynm.c create mode 100644 Win32/Src/getnetent.c create mode 100644 Win32/Src/getopt.c create mode 100644 Win32/Src/getservent.c create mode 100644 Win32/Src/inet_aton.c create mode 100644 Win32/Src/inet_net.c create mode 100644 Win32/Src/inet_pton.c create mode 100644 aclocal.m4 create mode 100644 arcnet.h create mode 100644 atmuni31.h create mode 100644 bpf/net/bpf_filter.c create mode 100644 bpf_dump.c create mode 100644 bpf_image.c create mode 100755 chmod_bpf create mode 100755 config.guess create mode 100644 config.h.in create mode 100755 config.sub create mode 100755 configure create mode 100644 configure.in create mode 100644 dlpisubs.c create mode 100644 dlpisubs.h create mode 100644 etherent.c create mode 100644 ethertype.h create mode 100644 fad-getad.c create mode 100644 fad-gifc.c create mode 100644 fad-glifc.c create mode 100644 fad-null.c create mode 100644 fad-sita.c create mode 100644 fad-win32.c create mode 100644 gencode.c create mode 100644 gencode.h create mode 100644 grammar.y create mode 100644 ieee80211.h create mode 100644 inet.c create mode 100755 install-sh create mode 100644 lbl/os-aix4.h create mode 100644 lbl/os-hpux11.h create mode 100644 lbl/os-osf4.h create mode 100644 lbl/os-osf5.h create mode 100644 lbl/os-solaris2.h create mode 100644 lbl/os-sunos4.h create mode 100644 lbl/os-ultrix4.h create mode 100644 llc.h create mode 100644 missing/snprintf.c create mode 100755 mkdep create mode 100644 msdos/bin2c.c create mode 100644 msdos/common.dj create mode 100644 msdos/makefile create mode 100644 msdos/makefile.dj create mode 100644 msdos/makefile.wc create mode 100644 msdos/ndis2.c create mode 100644 msdos/ndis2.h create mode 100644 msdos/ndis_0.asm create mode 100644 msdos/pkt_rx0.asm create mode 100644 msdos/pkt_rx1.s create mode 100644 msdos/pktdrvr.c create mode 100644 msdos/pktdrvr.h create mode 100644 msdos/readme.dos create mode 100644 nametoaddr.c create mode 100644 nlpid.h create mode 100644 optimize.c create mode 100644 org.tcpdump.chmod_bpf.plist create mode 100644 packaging/pcap.spec.in create mode 100644 pcap-bpf.c create mode 100644 pcap-bpf.h create mode 100644 pcap-bt-linux.c create mode 100644 pcap-bt-linux.h create mode 100644 pcap-can-linux.c create mode 100644 pcap-can-linux.h create mode 100644 pcap-canusb-linux.c create mode 100644 pcap-canusb-linux.h create mode 100644 pcap-common.c create mode 100644 pcap-common.h create mode 100644 pcap-config.1 create mode 100644 pcap-config.in create mode 100644 pcap-dag.c create mode 100644 pcap-dag.h create mode 100644 pcap-dlpi.c create mode 100644 pcap-dos.c create mode 100644 pcap-dos.h create mode 100644 pcap-enet.c create mode 100644 pcap-filter.manmisc.in create mode 100644 pcap-int.h create mode 100644 pcap-libdlpi.c create mode 100644 pcap-linktype.manmisc.in create mode 100644 pcap-linux.c create mode 100644 pcap-namedb.h create mode 100644 pcap-netfilter-linux.c create mode 100644 pcap-netfilter-linux.h create mode 100644 pcap-nit.c create mode 100644 pcap-null.c create mode 100644 pcap-pf.c create mode 100644 pcap-savefile.manfile.in create mode 100644 pcap-septel.c create mode 100644 pcap-septel.h create mode 100644 pcap-sita.c create mode 100644 pcap-sita.h create mode 100644 pcap-sita.html create mode 100644 pcap-snf.c create mode 100644 pcap-snf.h create mode 100644 pcap-snit.c create mode 100644 pcap-snoop.c create mode 100644 pcap-stdinc.h create mode 100644 pcap-tstamp.manmisc.in create mode 100644 pcap-usb-linux.c create mode 100644 pcap-usb-linux.h create mode 100644 pcap-win32.c create mode 100644 pcap.3pcap.in create mode 100644 pcap.c create mode 100644 pcap.h create mode 100644 pcap/bluetooth.h create mode 100644 pcap/bpf.h create mode 100644 pcap/ipnet.h create mode 100644 pcap/namedb.h create mode 100644 pcap/pcap.h create mode 100644 pcap/sll.h create mode 100644 pcap/usb.h create mode 100644 pcap/vlan.h create mode 100644 pcap_activate.3pcap create mode 100644 pcap_breakloop.3pcap create mode 100644 pcap_can_set_rfmon.3pcap create mode 100644 pcap_close.3pcap create mode 100644 pcap_compile.3pcap.in create mode 100644 pcap_create.3pcap create mode 100644 pcap_datalink.3pcap.in create mode 100644 pcap_datalink_name_to_val.3pcap create mode 100644 pcap_datalink_val_to_name.3pcap create mode 100644 pcap_dump.3pcap create mode 100644 pcap_dump_close.3pcap create mode 100644 pcap_dump_file.3pcap create mode 100644 pcap_dump_flush.3pcap create mode 100644 pcap_dump_ftell.3pcap create mode 100644 pcap_dump_open.3pcap.in create mode 100644 pcap_file.3pcap create mode 100644 pcap_fileno.3pcap create mode 100644 pcap_findalldevs.3pcap create mode 100644 pcap_freecode.3pcap create mode 100644 pcap_get_selectable_fd.3pcap create mode 100644 pcap_geterr.3pcap create mode 100644 pcap_inject.3pcap create mode 100644 pcap_is_swapped.3pcap create mode 100644 pcap_lib_version.3pcap create mode 100644 pcap_list_datalinks.3pcap.in create mode 100644 pcap_list_tstamp_types.3pcap.in create mode 100644 pcap_lookupdev.3pcap create mode 100644 pcap_lookupnet.3pcap create mode 100644 pcap_loop.3pcap create mode 100644 pcap_major_version.3pcap create mode 100644 pcap_next_ex.3pcap create mode 100644 pcap_offline_filter.3pcap create mode 100644 pcap_open_dead.3pcap.in create mode 100644 pcap_open_live.3pcap create mode 100644 pcap_open_offline.3pcap.in create mode 100644 pcap_set_buffer_size.3pcap create mode 100644 pcap_set_datalink.3pcap create mode 100644 pcap_set_promisc.3pcap create mode 100644 pcap_set_rfmon.3pcap create mode 100644 pcap_set_snaplen.3pcap create mode 100644 pcap_set_timeout.3pcap create mode 100644 pcap_set_tstamp_type.3pcap.in create mode 100644 pcap_setdirection.3pcap create mode 100644 pcap_setfilter.3pcap create mode 100644 pcap_setnonblock.3pcap create mode 100644 pcap_snapshot.3pcap create mode 100644 pcap_stats.3pcap create mode 100644 pcap_statustostr.3pcap create mode 100644 pcap_strerror.3pcap create mode 100644 pcap_tstamp_type_name_to_val.3pcap create mode 100644 pcap_tstamp_type_val_to_name.3pcap create mode 100644 ppp.h create mode 100755 runlex.sh create mode 100644 savefile.c create mode 100644 scanner.l create mode 100644 sf-pcap-ng.c create mode 100644 sf-pcap-ng.h create mode 100644 sf-pcap.c create mode 100644 sf-pcap.h create mode 100644 sunatmpos.h create mode 100644 tests/filtertest.c create mode 100644 tests/findalldevstest.c create mode 100644 tests/nonblocktest.c create mode 100644 tests/opentest.c create mode 100644 tests/reactivatetest.c create mode 100644 tests/selpolltest.c diff --git a/CHANGES b/CHANGES new file mode 100644 index 0000000..4f7fa35 --- /dev/null +++ b/CHANGES @@ -0,0 +1,672 @@ +Friday March 30, 2012. mcr@sandelman.ca +Summary for 1.3.0 libpcap release + Handle DLT_PFSYNC in {FreeBSD, other *BSD+Mac OS X, other}. + Linux: Don't fail if netfilter isn't enabled in the kernel. + Add new link-layer type for NFC Forum LLCP. + Put the CANUSB stuff into EXTRA_DIST, so it shows up in the release tarball. + Add LINKTYPE_NG40/DLT_NG40. + Add DLT_MPEG_2_TS/LINKTYPE_MPEG_2_TS for MPEG-2 transport streams. + [PATCH] Fix AIX-3.5 crash with read failure during stress + AIX fixes. + Introduce --disable-shared configure option. + Added initial support for canusb devices. + Include the pcap(3PCAP) additions as 1.2.1 changes. + many updates to documentation: pcap.3pcap.in + Improve 'inbound'/'outbound' capture filters under Linux. + Note the cleanup of handling of new DLT_/LINKTYPE_ values. + On Lion, don't build for PPC. + For mac80211 devices we need to clean up monitor mode on exit. + +Friday December 9, 2011. guy@alum.mit.edu. +Summary for 1.2.1 libpcap release + Update README file. + Fix typoes in README.linux file. + Clean up some compiler warnings. + Fix Linux compile problems and tests for ethtool.h. + Treat Debian/kFreeBSD and GNU/Hurd as systems with GNU + toolchains. + Support 802.1 QinQ as a form of VLAN in filters. + Treat "carp" as equivalent to "vrrp" in filters. + Fix code generated for "ip6 protochain". + Add some new link-layer header types. + Support capturing NetFilter log messages on Linux. + Clean up some error messages. + Turn off monitor mode on exit for mac80211 interfaces on Linux. + Fix problems turning monitor mode on for non-mac80211 interfaces + on Linux. + Properly fail if /sys/class/net or /proc/net/dev exist but can't + be opened. + Fail if pcap_activate() is called on an already-activated + pcap_t, and add a test program for that. + Fix filtering in pcap-ng files. + Don't build for PowerPC on Mac OS X Lion. + Simplify handling of new DLT_/LINKTYPE_ values. + Expand pcap(3PCAP) man page. + +Sunday July 24, 2011. mcr@sandelman.ca. +Summary for 1.2 libpcap release + All of the changes listed below for 1.1.1 and 1.1.2. + Changes to error handling for pcap_findalldevs(). + Fix the calculation of the frame size in memory-mapped captures. + Add a link-layer header type for STANAG 5066 D_PDUs. + Add a link-layer type for a variant of 3GPP TS 27.010. + Noted real nature of LINKTYPE_ARCNET. + Add a link-layer type for DVB-CI. + Fix configure-script discovery of VLAN acceleration support. + see http://netoptimizer.blogspot.com/2010/09/tcpdump-vs-vlan-tags.html + Linux, HP-UX, AIX, NetBSD and OpenBSD compilation/conflict fixes. + Protect against including AIX 5.x's having been included. + Add DLT_DBUS, for raw D-Bus messages. + Treat either EPERM or EACCES as "no soup for you". + Changes to permissions on DLPI systems. + Add DLT_IEEE802_15_4_NOFCS for 802.15.4 interfaces. + +Fri. August 6, 2010. guy@alum.mit.edu. +Summary for 1.1.2 libpcap release + Return DLT_ values, not raw LINKTYPE_ values from + pcap_datalink() when reading pcap-ng files + Add support for "wlan ra" and "wlan ta", to check the RA and TA + of WLAN frames that have them + Don't crash if "wlan addr{1,2,3,4}" are used without 802.11 + headers + Do filtering on USB and Bluetooth capturing + On FreeBSD/SPARC64, use -fPIC - it's apparently necessary + Check for valid port numbers (fit in a 16-bit unsigned field) in + "port" filters + Reject attempts to put savefiles into non-blocking mode + Check for "no such device" for the "get the media types" ioctl + in *BSD + Improve error messages from bpf_open(), and let it do the error + handling + Return more specific errors from pcap_can_set_rfmon(); fix + documentation + Update description fetching code for FreeBSD, fix code for + OpenBSD + Ignore /sys/net/dev files if we get ENODEV for them, not just + ENXIO; fixes handling of bonding devices on Linux + Fix check for a constant 0 argument to BPF_DIV + Use the right version of ar when cross-building + Free any filter set on a savefile when the savefile is closed + Include the CFLAGS setting when configure was run in the + compiler flags + Add support for 802.15.4 interfaces on Linux + +Thu. April 1, 2010. guy@alum.mit.edu. +Summary for 1.1.1 libpcap release + Update CHANGES to reflect more of the changes in 1.1.0. + Fix build on RHEL5. + Fix shared library build on AIX. + +Thu. March 11, 2010. ken@netfunctional.ca/guy@alum.mit.edu. +Summary for 1.1.0 libpcap release + Add SocketCAN capture support + Add Myricom SNF API support + Update Endace DAG and ERF support + Add support for shared libraries on Solaris, HP-UX, and AIX + Build, install, and un-install shared libraries by default; + don't build/install shared libraries on platforms we don't support + Fix building from a directory other than the source directory + Fix compiler warnings and builds on some platforms + Update config.guess and config.sub + Support monitor mode on mac80211 devices on Linux + Fix USB memory-mapped capturing on Linux; it requires a new DLT_ + value + On Linux, scan /sys/class/net for devices if we have it; scan + it, or /proc/net/dev if we don't have /sys/class/net, even if + we have getifaddrs(), as it'll find interfaces with no + addresses + Add limited support for reading pcap-ng files + Fix BPF driver-loading error handling on AIX + Support getting the full-length interface description on FreeBSD + In the lexical analyzer, free up any addrinfo structure we got back + from getaddrinfo(). + Add support for BPF and libdlpi in OpenSolaris (and SXCE) + Hyphenate "link-layer" everywhere + Add /sys/kernel/debug/usb/usbmon to the list of usbmon locations + In pcap_read_linux_mmap(), if there are no frames available, call + poll() even if we're in non-blocking mode, so we pick up + errors, and check for the errors in question. + Note that poll() works on BPF devices is Snow Leopard + If an ENXIO or ENETDOWN is received, it may mean the device has + gone away. Deal with it. + For BPF, raise the default capture buffer size to from 32k to 512k + Support ps_ifdrop on Linux + Added a bunch of #ifdef directives to make wpcap.dll (WinPcap) compile + under cygwin. + Changes to Linux mmapped captures. + Fix bug where create_ring would fail for particular snaplen and + buffer size combinations + Update pcap-config so that it handles libpcap requiring + additional libraries + Add workaround for threadsafeness on Windows + Add missing mapping for DLT_ENC <-> LINKTYPE_ENC + DLT: Add DLT_CAN_SOCKETCAN + DLT: Add Solaris ipnet + Don't check for DLT_IPNET if it's not defined + Add link-layer types for Fibre Channel FC-2 + Add link-layer types for Wireless HART + Add link-layer types for AOS + Add link-layer types for DECT + Autoconf fixes (AIX, HP-UX, OSF/1, Tru64 cleanups) + Install headers unconditionally, and include vlan.h/bluetooth.h if + enabled + Autoconf fixes+cleanup + Support enabling/disabling bluetooth (--{en,dis}able-bluetooth) + Support disabling SITA support (--without-sita) + Return -1 on failure to create packet ring (if supported but + creation failed) + Fix handling of 'any' device, so that it can be opened, and no longer + attempt to open it in Monitor mode + Add support for snapshot length for USB Memory-Mapped Interface + Fix configure and build on recent Linux kernels + Fix memory-mapped Linux capture to support pcap_next() and + pcap_next_ex() + Fixes for Linux USB capture + DLT: Add DLT_LINUX_EVDEV + DLT: Add DLT_GSMTAP_UM + DLT: Add DLT_GSMTAP_ABIS + +Mon. October 27, 2008. ken@netfunctional.ca. Summary for 1.0.0 libpcap release + Compile with IPv6 support by default + Compile with large file support on by default + Add pcap-config script, which deals with -I/-L flags for compiling + DLT: Add IPMB + DLT: Add LAPD + DLT: Add AX25 (AX.25 w/KISS header) + DLT: Add JUNIPER_ST + 802.15.4 support + Variable length 802.11 header support + X2E data type support + SITA ACN Interface support - see README.sita + Support for memory-mapped capture on Linux + Support for zerocopy BPF on platforms that support it + Support for setting buffer size when opening devices + Support for setting monitor mode when opening 802.11 devices + Better support for dealing with VLAN tagging/stripping on Linux + Fix dynamic library support on OSX + Return PCAP_ERROR_IFACE_NOT_UP if the interface isn't 'UP', so applications + can print better diagnostic information + Return PCAP_ERROR_PERM_DENIED if we don't have permission to open a device, so + applications can tell the user they need to go play with permissions + On Linux, ignore ENETDOWN so we can continue to capture packets if the + interface goes down and comes back up again. + On Linux, support new tpacket frame headers (2.6.27+) + On Mac OS X, add scripts for changing permissions on /dev/bpf* and launchd plist + On Solaris, support 'passive mode' on systems that support it + Fixes to autoconf and general build environment + Man page reorganization + cleanup + Autogenerate VERSION numbers better + +Mon. September 10, 2007. ken@xelerance.com. Summary for 0.9.8 libpcap release + Change build process to put public libpcap headers into pcap subir + DLT: Add value for IPMI IPMB packets + DLT: Add value for u10 Networks boards + Require for pf definitions - allows reading of pflog formatted + libpcap files on an OS other than where the file was generated + +Wed. April 25, 2007. ken@xelerance.com. Summary for 0.9.6 libpcap release + + Put the public libpcap headers into a pcap subdirectory in both the + source directory and the target include directory, and have include + files at the top-level directory to include those headers, for + backwards compatibility. + Add Bluetooth support + Add USB capturing support on Linux + Add support for the binary USB sniffing interface in Linux + Add support for new FreeBSD BIOCSDIRECTION ioctl + Add additional filter operations for 802.11 frame types + Add support for filtering on MTP2 frame types + Propagate some changes from the main branch, so the x.9 branch has + all the DLT_ and LINKTYPE_ values that the main branch does + Reserved a DLT_ and SAVEFILE_ value for PPI (Per Packet Info) + encapsulated packets + Add LINKTYPE_ for IEEE 802.15.4, with address fields padded as done + by Linux drivers + Add LINKTYPE_ value corresponding to DLT_IEEE802_16_MAC_CPS. + Add DLT for IEEE 802.16 (WiMAX) MAC Common Part Sublayer + Add DLT for Bluetooth HCI UART transport layer + When building a shared library, build with "-fPIC" on Linux to support x86_64 + Link with "$(CC) -shared" rather than "ld -shared" when building a + ".so" shared library + Add support for autoconf 2.60 + Fixes to discard unread packets when changing filters + Changes to handle name changes in the DAG library resulting from + switching to libtool. + Add support for new DAG ERF types. + Add an explicit "-ldag" when building the shared library, so the DAG + library dependency is explicit. + Mac OSX fixes for dealing with "wlt" devices + Fixes in add_or_find_if() & pcap_findalldevs() to optimize generating + device lists + Fixed a bug in pcap_open_live(). The return value of PacketSetHwFilter + was not checked. + +Tue. September 19, 2006. ken@xelerance.com. Summary for 0.9.5 libpcap release + + Support for LAPD frames with vISDN + Support for ERF on channelized T1/E1 cards via DAG API + Fix capitalization that caused issues crossc compiling on Linux + Better failure detection on PacketGetAdapterNames() + Fixes for MPLS packet generation (link layer) + OP_PACKET now matches the beginning of the packet, instead of + beginning+link-layer + Add DLT/LINKTYPE for carrying FRF.16 Multi-link Frame Relay + Fix allocation of buffer for list of link-layer types + Added a new DLT and LINKTYPE value for ARINC 653 Interpartition Communcation Messages + Fixed a typo in a DLT value: it should start with DLT_ and not LINKTYPE_ + Redefined DLT_CAN20B and LINKTYPE_CAN20B as #190 (as this is the right value for CAN). + Added definition for DLT_A429 and LINKTYPE_A429 as #184. + Added a new DLT and LINKTYPE value for CAN v2.0B frames. + Add support for DLT_JUNIPER_VP. + Don't double-count received packets on Linux systems that + support the PACKET_STATISTICS getsockopt() argument on + PF_PACKET sockets. + Add support for DLT_IEEE802_11 and DLT_IEEE802_11_RADIO link + layers in Windows + Add support to build libpcap.lib and wpcap.dll under Cygnus and + MingW32. + +Mon. September 5, 2005. ken@xelerance.com. Summary for 0.9.4 libpcap release + + Support for radiotap on Linux (Mike Kershaw) + Fixes for HP-UX + Support for additional Juniper link-layer types + Fixes for filters on MPLS-encapsulated packets + "vlan" filter fixed + "pppoed" and "pppoes" filters added; the latter modifies later + parts of the filter expression to look at the PPP headers and + headers in the PPP payload + +Tue. July 5, 2005. ken@xelerance.com. Summary for 0.9.3 libpcap release + + Fixes for compiling on nearly every platform, + including improved 64bit support + MSDOS Support + Add support for sending packets + OpenBSD pf format support + IrDA capture (Linux only) + +Tue. March 30, 2004. mcr@sandelman.ottawa.on.ca. Summary for 3.8.3 release + + Fixed minor problem in gencode.c that would appear on 64-bit + platforms. + Version number is now sane. + +Mon. March 29, 2004. mcr@sandelman.ottawa.on.ca. Summary for 3.8.2 release + + updates for autoconf 2.5 + fixes for ppp interfaces for freebsd 4.1 + pcap gencode can generate code for 802.11, IEEE1394, and pflog. + +Wed. November 12, 2003. mcr@sandelman.ottawa.on.ca. Summary for 0.8 release + + added pcap_findalldevs() + Win32 patches from NetGroup, Politecnico di Torino (Italy) + OpenBSD pf, DLT_PFLOG added + Many changes to ATM support. + lookup pcap_lookupnet() + Added DLT_ARCNET_LINUX, DLT_ENC, DLT_IEEE802_11_RADIO, DLT_SUNATM, + DLT_IP_OVER_FC, DLT_FRELAY, others. + Sigh. More AIX wonderfulness. + Document updates. + Changes to API: pcap_next_ex(), pcap_breakloop(), pcap_dump_flush(), + pcap_list_datalinks(), pcap_set_datalink(), + pcap_lib_version(), pcap_datalink_val_to_name(), + pcap_datalink_name_to_val(), new error returns. + +Tuesday, February 25, 2003. fenner@research.att.com. 0.7.2 release + + Support link types that use 802.2 always, never, and sometimes. + Don't decrease the size of the BPF buffer from the default. + Support frame relay. + Handle 32-bit timestamps in DLPI, and pass the right buffer size. + Handle Linux systems with modern kernel but without + SOL_PACKET in the userland headers. + Linux support for ARPHRD_RAWHDLC. + Handle 32-bit timestamps in snoop. + Support eg (Octane/O2xxx/O3xxx Gigabit) devices. + Add new reserved DLT types. + +Monday October 23, 2001. mcr@sandelman.ottawa.on.ca. Summary for 0.7 release + + Added pcap_findalldevs() call to get list of interfaces in a MI way. + + pcap_stats() has been documented as to what its counters mean on + each platform. + +Tuesday January 9, 2001. guy@alum.mit.edu. Summary for 0.6 release + + New Linux libpcap implementation, which, in 2.2 and later + kernels, uses PF_PACKET sockets and supports kernel packet + filtering (if compiled into the kernel), and supports the "any" + device for capturing on all interfaces. Cleans up promiscuous + mode better on pre-2.2 kernels, and has various other fixes + (handles 2.4 ARPHRD_IEEE802_TR, handles ISDN devices better, + doesn't show duplicate packets on loopback interface, etc.). + + Fixed HP-UX libpcap implementation to correctly get the PPA for + an interface, to allow interfaces to be opened by interface name. + + libpcap savefiles have system-independent link-layer type values + in the header, rather than sometimes platform-dependent DLT_ + values, to make it easier to exchange capture files between + different OSes. + + Non-standard capture files produced by some Linux tcpdumps, e.g. + the one from Red Hat Linux 6.2 and later, can now be read. + + Updated autoconf stock files. + + Filter expressions can filter on VLAN IDs and various OSI + protocols, and work on Token Ring (with non-source-routed + packets). + + "pcap_open_dead()" added to allow compiling filter expressions + to pcap code without opening a capture device or capture file. + + Header files fixed to allow use in C++ programs. + + Removed dependancy on native headers for packet layout. + Removed Linux specific headers that were shipped. + + Security fixes: Strcpy replaced with strlcpy, sprintf replaced + with snprintf. + + Fixed bug that could cause subsequent "pcap_compile()"s to fail + erroneously after one compile failed. + + Assorted other bug fixes. + + README.aix and README.linux files added to describe + platform-specific issues. + + "getifaddrs()" rather than SIOCGIFCONF used, if available. + +v0.5 Sat Jun 10 11:09:15 PDT 2000 + +itojun@iijlab.net +- Brought in KAME IPv6/IPsec bpf compiler. +- Fixes for NetBSD. +- Support added for OpenBSD DLT_LOOP and BSD/OS DLT_C_HDLC (Cisco HDLC), + and changes to work around different BSDs having different DLT_ types + with the same numeric value. + +Assar Westerlund +- Building outside the source code tree fixed. +- Changed to write out time stamps with 32-bit seconds and microseconds + fields, regardless of whether those fields are 32 bits or 64 bits in + the OS's native "struct timeval". +- Changed "pcap_lookupdev()" to dynamically grow the buffer into which + the list of interfaces is read as necessary in order to hold the + entire list. + +Greg Troxel +- Added a new "pcap_compile_nopcap()", which lets you compile a filter + expression into a BPF program without having an open live capture or + capture file. + +v0.4 Sat Jul 25 12:40:09 PDT 1998 + +- Fix endian problem with DLT_NULL devices. From FreeBSD via Bill + Fenner (fenner@parc.xerox.com) + +- Fix alignment problem with FDDI under DLPI. This was causing core + dumps under Solaris. + +- Added configure options to disable flex and bison. Resulted from a + bug report by barnett@grymoire.crd.ge.com (Bruce Barnett). Also added + options to disable gcc and to force a particular packet capture type. + +- Added support for Fore ATM interfaces (qaa and fa) under IRIX. Thanks + to John Hawkinson (jhawk@mit.edu) + +- Change Linux PPP and SLIP to use DLT_RAW since the kernel does not + supply any "link layer" data. + +- Change Linux to use SIOCGIFHWADDR ioctl to determine link layer type. + Thanks to Thomas Sailer (sailer@ife.ee.ethz.ch) + +- Change IRIX PPP to use DLT_RAW since the kernel does not supply any + "link layer" data. + +- Modified to support the new BSD/OS 2.1 PPP and SLIP link layer header + formats. + +- Added some new SGI snoop interface types. Thanks to Steve Alexander + (sca@refugee.engr.sgi.com) + +- Fixes for HP-UX 10.20 (which is similar to HP-UX 9). Thanks to + Richard Allen (ra@hp.is) and Steinar Haug (sthaug@nethelp.no) + +- Fddi supports broadcast as reported by Jeff Macdonald + (jeff@iacnet.com). Also correct ieee802 and arcnet. + +- Determine Linux pcap buffer size at run time or else it might not be + big enough for some interface types (e.g. FDDI). Thanks to Jes + Sorensen (Jes.Sorensen@cern.ch) + +- Fix some linux alignment problems. + +- Document promisc argument to pcap_open_live(). Reported by Ian Marsh + (ianm@sics.se) + +- Support Metricom radio packets under Linux. Thanks to Kevin Lai + (laik@gunpowder.stanford.edu) + +- Bind to interface name under Linux to avoid packets from multiple + interfaces on multi-homed hosts. Thanks to Kevin Lai + (laik@gunpowder.stanford.edu) + +- Change L_SET to SEEK_SET for HP-UX. Thanks to Roland Roberts + (rroberts@muller.com) + +- Fixed an uninitialized memory reference found by Kent Vander Velden + (graphix@iastate.edu) + +- Fixed lex pattern for IDs to allow leading digits. As reported by + Theo de Raadt (deraadt@cvs.openbsd.org) + +- Fixed Linux include file problems when using GNU libc. + +- Ifdef ARPHRD_FDDI since not all versions of the Linux kernel have it. + Reported reported by Eric Jacksch (jacksch@tenebris.ca) + +- Fixed bug in pcap_dispatch() that kept it from returning on packet + timeouts. + +- Changed ISLOOPBACK() macro when IFF_LOOPBACK isn't available to check + for "lo" followed by an eos or digit (newer versions of Linux + apparently call the loopback "lo" instead of "lo0"). + +- Fixed Linux networking include files to use ints instead of longs to + avoid problems with 64 bit longs on the alpha. Thanks to Cristian + Gafton (gafton@redhat.com) + +v0.3 Sat Nov 30 20:56:27 PST 1996 + +- Added Linux support. + +- Fixed savefile bugs. + +- Solaris x86 fix from Tim Rylance (t.rylance@elsevier.nl) + +- Add support for bpf kernel port filters. + +- Remove duplicate atalk protocol table entry. Thanks to Christian + Hopps (chopps@water.emich.edu) + +- Fixed pcap_lookupdev() to ignore nonexistent devices. This was + reported to happen under BSD/OS by David Vincenzetti + (vince@cryptonet.it) + +- Avoid solaris compiler warnings. Thanks to Bruce Barnett + (barnett@grymoire.crd.ge.com) + +v0.2.1 Sun Jul 14 03:02:26 PDT 1996 + +- Fixes for HP-UX 10. Thanks in part to to Thomas Wolfram + (wolf@prz.tu-berlin.de) and Rick Jones (raj@hpisrdq.cup.hp.com) + +- Added support for SINIX. Thanks to Andrej Borsenkow + (borsenkow.msk@sni.de) + +- Fixes for AIX (although this system is not yet supported). Thanks to + John Hawkinson (jhawk@mit.edu) + +- Use autoconf's idea of the top level directory in install targets. + Thanks to John Hawkinson. + +- Add missing autoconf packet capture result message. Thanks to Bill + Fenner (fenner@parc.xerox.com) + +- Fixed padding problems in the pf module. + +- Fixed some more alignment problems on the alpha. + +- Added explicit netmask support. Thanks to Steve Nuchia + (steve@research.oknet.com) + +- Fixed to handle raw ip addresses such as 0.0.0.1 without "left + justifing" + +- Add "sca" keyword (for DEC cluster services) as suggested by Terry + Kennedy (terry@spcvxa.spc.edu) + +- Add "atalk" keyword as suggested by John Hawkinson. + +- Add "igrp" keyword. + +- Fixed HID definition in grammar.y to be a string, not a value. + +- Use $CC when checking gcc version. Thanks to Carl Lindberg + (carl_lindberg@blacksmith.com) + +- Removed obsolete reference to pcap_immediate() from the man page. + Michael Stolarchuk (mts@terminator.rs.itd.umich.edu) + +- DLT_NULL has a 4 byte family header. Thanks to Jeffrey Honig + (jch@bsdi.com) + +v0.2 Sun Jun 23 02:28:42 PDT 1996 + +- Add support for HP-UX. Resulted from code contributed by Tom Murray + (tmurray@hpindck.cup.hp.com) and Philippe-Andri Prindeville + (philipp@res.enst.fr) + +- Update INSTALL with a reminder to install include files. Thanks to + Mark Andrews (mandrews@aw.sgi.com) + +- Fix bpf compiler alignment bug on the alpha. + +- Use autoconf to detect architectures that can't handle misaligned + accesses. + +- Added loopback support for snoop. Resulted from report Steve + Alexander (sca@engr.sgi.com) + +v0.1 Fri Apr 28 18:11:03 PDT 1995 + +- Fixed compiler and optimizer bugs. The BPF filter engine uses unsigned + comparison operators, while the code generator and optimizer assumed + signed semantics in several places. Thanks to Charlie Slater + (cslater@imatek.com) for pointing this out. + +- Removed FDDI ifdef's, they aren't really needed. Resulted from report + by Gary Veum (veum@boa.gsfc.nasa.gov). + +- Add pcap-null.c which allows offline use of libpcap on systems that + don't support live package capture. This feature resulting from a + request from Jan van Oorschot (j.p.m.voorschot@et.tudelft.nl). + +- Make bpf_compile() reentrant. Fix thanks to Pascal Hennequin + (Pascal.Hennequin@hugo.int-evry.fr). + +- Port to GNU autoconf. + +- Fix pcap-dlpi.c to work with isdn. Resulted from report by Flemming + Johansen (fsj@csd.cri.dk). + +- Handle multi-digit interface unit numbers (aka ppa's) under dlpi. + Resulted from report by Daniel Ehrlich (ehrlich@cse.psu.edu). + +- Fix pcap-dlpi.c to work in non-promiscuous mode. Resulted from report + by Jeff Murphy (jcmurphy@acsu.buffalo.edu). + +- Add support for "long jumps". Thanks to Jeffrey Mogul + (mogul@pa.dec.com). + +- Fix minor problems when compiling with BDEBUG as noticed by Scott + Bertilson (scott@unet.umn.edu). + +- Declare sys_errlist "const char *const" to avoid problems under + FreeBSD. Resulted from report by jher@eden.com. + +v0.0.6 Fri Apr 28 04:07:13 PDT 1995 + +- Add missing variable declaration missing from 0.0.6 + +v0.0.5 Fri Apr 28 00:22:21 PDT 1995 + +- Workaround for problems when pcap_read() returns 0 due to the timeout + expiring. + +v0.0.4 Thu Apr 20 20:41:48 PDT 1995 + +- Change configuration to not use gcc v2 flags with gcc v1. + +- Fixed a bug in pcap_next(); if pcap_dispatch() returns 0, pcap_next() + should also return 0. Thanks to Richard Stevens (rstevens@noao.edu). + +- Fixed configure to test for snoop before dlpi to avoid problems under + IRIX 5. Thanks to J. Eric Townsend (jet@abulafia.genmagic.com). + +- Hack around deficiency in Ultrix's make. + +- Fix two bugs related to the Solaris pre-5.3.2 bufmod bug; handle + savefiles that have more than snapshot bytes of data in them (so we + can read old savefiles) and avoid writing such files. + +- Added checkioctl which is used with gcc to check that the + "fixincludes" script has been run. + +v0.0.3 Tue Oct 18 18:13:46 PDT 1994 + +- Fixed configure to test for snoop before dlpi to avoid problems under + IRIX 5. Thanks to J. Eric Townsend (jet@abulafia.genmagic.com). + +v0.0.2 Wed Oct 12 20:56:37 PDT 1994 + +- Implement timeout in the dlpi pcap_open_live(). Thanks to Richard + Stevens. + +- Determine pcap link type from dlpi media type. Resulted from report + by Mahesh Jethanandani (mahesh@npix.com). + +v0.0.1 Fri Jun 24 14:50:57 PDT 1994 + +- Fixed bug in nit_setflags() in pcap-snit.c. The streams ioctl timeout + wasn't being initialized sometimes resulting in an "NIOCSFLAGS: + Invalid argument" error under OSF/1. Reported by Matt Day + (mday@artisoft.com) and Danny Mitzel (dmitzel@whitney.hitc.com). + +- Turn on FDDI support by default. + +v0.0 Mon Jun 20 19:20:16 PDT 1994 + +- Initial release. + +- Fixed bug with greater/less keywords, reported by Mark Andrews + (mandrews@alias.com). + +- Fix bug where '|' was defined as BPF_AND instead of BPF_OR, reported + by Elan Amir (elan@leeb.cs.berkeley.edu). + +- Machines with little-endian byte ordering are supported thanks to + Jeff Mogul. + +- Add hack for version 2.3 savefiles which don't have caplen and len + swapped thanks to Vern Paxson. + +- Added "&&" and "||" aliases for "and" and "or" thanks to Vern Paxson. + +- Added length, inbound and outbound keywords. diff --git a/CREDITS b/CREDITS new file mode 100644 index 0000000..cfe84ba --- /dev/null +++ b/CREDITS @@ -0,0 +1,155 @@ +This file lists people who have contributed to libpcap: + +The current maintainers: + Bill Fenner + Fulvio Risso + Guy Harris + Hannes Gredler + Michael Richardson + +Additional people who have contributed patches: + + Alan Bawden + Albert Chin + Alexander 'Leo' Bergolth + Alexey Kuznetsov + Alon Bar-Lev + Andrew Brown + + Antti Kantee + Arien Vijn + Arkadiusz Miskiewicz + Armando L. Caro Jr. + Assar Westerlund + Brian Ginsbach + Charles M. Hannum + Chris G. Demetriou + Chris Lightfoot + Chris Maynard + Chris Pepper + Christian Bell + Christian Peron + Daniele Orlandi + Darren Reed + David Kaelbling + David Young + Dean Gaudet + dhruv + Don Ebright + Dug Song + Dustin Spicuzza + Eric Anderson + Erik de Castro Lopo + Felix Obenhuber + Florent Drouin + Franz Schaefer + frederich + Fulko Hew + Fumiyuki Shimizu + Garrett Cooper + Gianluca Varenni + Gilbert Hoyek + Gisle Vanem + Graeme Hewson + Greg Stark + Greg Troxel + Gregor Maier + Guillaume Pelat + Hagen Paul Pfeifer + Henri Doreau + Hyung Sik Yoon + Igor Khristophorov + Jan-Philip Velders + Jason R. Thorpe + Javier Achirica + Jean Tourrilhes + Jean-Louis Charton + Jefferson Ogata + Jesper Dangaard Brouer + Jesper Peterson + Joerg Mayer + John Bankier + Jon Lindgren + Jon Smirl + Juergen Schoenwaelder + Julien Moutinho + Jung-uk Kim + Kazushi Sugyo + Klaus Klein + Koryn Grant + Kris Katterjohn + Krzysztof Halasa + Lorenzo Cavallaro + Loris Degioanni + Love Hörnquist-Ã…strand + Luis MartinGarcia + Maciej W. Rozycki + Marcus Felipe Pereira + Mark C. Brown + Mark Pizzolato + Markus Mayer + Martin Husemann + Márton Németh + Matthew Luckie + Max Laier + Mike Frysinger + Mike Kershaw + Mike Wiacek + Miroslav Lichvar + Monroe Williams + + N. Leiten + Nicolas Dade + Octavian Cerna + Olaf Kirch + Ollie Wild + Onno van der Linden + Paolo Abeni + Patrick Marie + Patrick McHardy + Paul Mundt + Pavel Kankovsky + Pawel Pokrywka + Peter Fales + Peter Jeremy + Peter Volkov + Phil Wood + Rafal Maszkowski + + Richard Stearn + Rick Jones + Robert Edmonds + Roberto Mariani + Romain Francoise + Sagun Shakya + Scott Barron + Scott Gifford + Scott Mcmillan + Sebastian Krahmer + Sebastien Roy + Sepherosa Ziehau + Shaun Clowes + Solomon Peachy + Stefan Hudson + Stephen Donnelly + Takashi Yamamoto + Tanaka Shin-ya + Tobias Poschwatta + Tony Li + Torsten Landschoff + Uns Lider + Uwe Girlich + Wesley Shields + Xianjie Zhang + Xin Li + Yen Yen Lim + Yvan Vanhullebus + Yoann Vandoorselaere + +The original LBL crew: + Steve McCanne + Craig Leres + Van Jacobson + +Past maintainers: + Jun-ichiro itojun Hagino diff --git a/ChmodBPF/ChmodBPF b/ChmodBPF/ChmodBPF new file mode 100755 index 0000000..ee37121 --- /dev/null +++ b/ChmodBPF/ChmodBPF @@ -0,0 +1,33 @@ +#! /bin/sh + +. /etc/rc.common + +StartService () +{ + # + # Unfortunately, Mac OS X's devfs is based on the old FreeBSD + # one, not the current one, so there's no way to configure it + # to create BPF devices with particular owners or groups. + # This startup item will make it owned by the admin group, + # with permissions rw-rw----, so that anybody in the admin + # group can use programs that capture or send raw packets. + # + # Change this as appropriate for your site, e.g. to make + # it owned by a particular user without changing the permissions, + # so only that user and the super-user can capture or send raw + # packets, or give it the permissions rw-r-----, so that + # only the super-user can send raw packets but anybody in the + # admin group can capture packets. + # + chgrp admin /dev/bpf* + chmod g+rw /dev/bpf* +} + +StopService () +{ + return 0; +} + +RestartService () { StartService; } + +RunService "$1" diff --git a/ChmodBPF/StartupParameters.plist b/ChmodBPF/StartupParameters.plist new file mode 100644 index 0000000..cba2166 --- /dev/null +++ b/ChmodBPF/StartupParameters.plist @@ -0,0 +1,4 @@ +{ + Description = "Change BPF permissions"; + Provides = ("ChmodBPF"); +} diff --git a/INSTALL.txt b/INSTALL.txt new file mode 100644 index 0000000..58d8e3c --- /dev/null +++ b/INSTALL.txt @@ -0,0 +1,403 @@ +@(#) $Header: /tcpdump/master/libpcap/INSTALL.txt,v 1.29 2008-06-12 20:21:51 guy Exp $ (LBL) + +To build libpcap, run "./configure" (a shell script). The configure +script will determine your system attributes and generate an +appropriate Makefile from Makefile.in. Next run "make". If everything +goes well you can su to root and run "make install". However, you need +not install libpcap if you just want to build tcpdump; just make sure +the tcpdump and libpcap directory trees have the same parent +directory. + +If configure says: + + configure: warning: cannot determine packet capture interface + configure: warning: (see INSTALL for more info) + +then your system either does not support packet capture or your system +does support packet capture but libpcap does not support that +particular type. (If you have HP-UX, see below.) If your system uses a +packet capture not supported by libpcap, please send us patches; don't +forget to include an autoconf fragment suitable for use in +configure.in. + +It is possible to override the default packet capture type, although +the circumstance where this works are limited. For example if you have +installed bpf under SunOS 4 and wish to build a snit libpcap: + + ./configure --with-pcap=snit + +Another example is to force a supported packet capture type in the case +where the configure scripts fails to detect it. + +You will need an ANSI C compiler to build libpcap. The configure script +will abort if your compiler is not ANSI compliant. If this happens, use +the GNU C compiler, available via anonymous ftp: + + ftp://ftp.gnu.org/pub/gnu/gcc/ + +If you use flex, you must use version 2.4.6 or higher. The configure +script automatically detects the version of flex and will not use it +unless it is new enough. You can use "flex -V" to see what version you +have (unless it's really old). The current version of flex is available +via anonymous ftp: + + ftp://ftp.ee.lbl.gov/flex-*.tar.Z + +As of this writing, the current version is 2.5.4. + +If you use bison, you must use flex (and visa versa). The configure +script automatically falls back to lex and yacc if both flex and bison +are not found. + +Sometimes the stock C compiler does not interact well with flex and +bison. The list of problems includes undefined references for alloca. +You can get around this by installing gcc or manually disabling flex +and bison with: + + ./configure --without-flex --without-bison + +If your system only has AT&T lex, this is okay unless your libpcap +program uses other lex/yacc generated code. (Although it's possible to +map the yy* identifiers with a script, we use flex and bison so we +don't feel this is necessary.) + +Some systems support the Berkeley Packet Filter natively; for example +out of the box OSF and BSD/OS have bpf. If your system does not support +bpf, you will need to pick up: + + ftp://ftp.ee.lbl.gov/bpf-*.tar.Z + +Note well: you MUST have kernel source for your operating system in +order to install bpf. An exception is SunOS 4; the bpf distribution +includes replacement kernel objects for some of the standard SunOS 4 +network device drivers. See the bpf INSTALL document for more +information. + +If you use Solaris, there is a bug with bufmod(7) that is fixed in +Solaris 2.3.2 (aka SunOS 5.3.2). Setting a snapshot length with the +broken bufmod(7) results in data be truncated from the FRONT of the +packet instead of the end. The work around is to not set a snapshot +length but this results in performance problems since the entire packet +is copied to user space. If you must run an older version of Solaris, +there is a patch available from Sun; ask for bugid 1149065. After +installing the patch, use "setenv BUFMOD_FIXED" to enable use of +bufmod(7). However, we recommend you run a more current release of +Solaris. + +If you use the SPARCompiler, you must be careful to not use the +/usr/ucb/cc interface. If you do, you will get bogus warnings and +perhaps errors. Either make sure your path has /opt/SUNWspro/bin +before /usr/ucb or else: + + setenv CC /opt/SUNWspro/bin/cc + +before running configure. (You might have to do a "make distclean" +if you already ran configure once). + +Also note that "make depend" won't work; while all of the known +universe uses -M, the SPARCompiler uses -xM to generate makefile +dependencies. + +If you are trying to do packet capture with a FORE ATM card, you may or +may not be able to. They usually only release their driver in object +code so unless their driver supports packet capture, there's not much +libpcap can do. + +If you get an error like: + + tcpdump: recv_ack: bind error 0x??? + +when using DLPI, look for the DL_ERROR_ACK error return values, usually +in /usr/include/sys/dlpi.h, and find the corresponding value. + +Under {DEC OSF/1, Digital UNIX, Tru64 UNIX}, packet capture must be +enabled before it can be used. For instructions on how to enable packet +filter support, see: + + ftp://ftp.digital.com/pub/Digital/dec-faq/Digital-UNIX + +Look for the "How do I configure the Berkeley Packet Filter and capture +tcpdump traces?" item. + +Once you enable packet filter support, your OSF system will support bpf +natively. + +Under Ultrix, packet capture must be enabled before it can be used. For +instructions on how to enable packet filter support, see: + + ftp://ftp.digital.com/pub/Digital/dec-faq/ultrix + +If you use HP-UX, you must have at least version 9 and either the +version of cc that supports ANSI C (cc -Aa) or else use the GNU C +compiler. You must also buy the optional streams package. If you don't +have: + + /usr/include/sys/dlpi.h + /usr/include/sys/dlpi_ext.h + +then you don't have the streams package. In addition, we believe you +need to install the "9.X LAN and DLPI drivers cumulative" patch +(PHNE_6855) to make the version 9 DLPI work with libpcap. + +The DLPI streams package is standard starting with HP-UX 10. + +The HP implementation of DLPI is a little bit eccentric. Unlike +Solaris, you must attach /dev/dlpi instead of the specific /dev/* +network pseudo device entry in order to capture packets. The PPA is +based on the ifnet "index" number. Under HP-UX 9, it is necessary to +read /dev/kmem and the kernel symbol file (/hp-ux). Under HP-UX 10, +DLPI can provide information for determining the PPA. It does not seem +to be possible to trace the loopback interface. Unlike other DLPI +implementations, PHYS implies MULTI and SAP and you get an error if you +try to enable more than one promiscuous mode at a time. + +It is impossible to capture outbound packets on HP-UX 9. To do so on +HP-UX 10, you will, apparently, need a late "LAN products cumulative +patch" (at one point, it was claimed that this would be PHNE_18173 for +s700/10.20; at another point, it was claimed that the required patches +were PHNE_20892, PHNE_20725 and PHCO_10947, or newer patches), and to do +so on HP-UX 11 you will, apparently, need the latest lancommon/DLPI +patches and the latest driver patch for the interface(s) in use on HP-UX +11 (at one point, it was claimed that patches PHNE_19766, PHNE_19826, +PHNE_20008, and PHNE_20735 did the trick). + +Furthermore, on HP-UX 10, you will need to turn on a kernel switch by +doing + + echo 'lanc_outbound_promisc_flag/W 1' | adb -w /stand/vmunix /dev/mem + +You would have to arrange that this happen on reboots; the right way to +do that would probably be to put it into an executable script file +"/sbin/init.d/outbound_promisc" and making +"/sbin/rc2.d/S350outbound_promisc" a symbolic link to that script. + +Finally, testing shows that there can't be more than one simultaneous +DLPI user per network interface. + +If you use Linux, this version of libpcap is known to compile and run +under Red Hat 4.0 with the 2.0.25 kernel. It may work with earlier 2.X +versions but is guaranteed not to work with 1.X kernels. Running more +than one libpcap program at a time, on a system with a 2.0.X kernel, can +cause problems since promiscuous mode is implemented by twiddling the +interface flags from the libpcap application; the packet capture +mechanism in the 2.2 and later kernels doesn't have this problem. Also, +packet timestamps aren't very good. This appears to be due to haphazard +handling of the timestamp in the kernel. + +Note well: there is rumoured to be a version of tcpdump floating around +called 3.0.3 that includes libpcap and is supposed to support Linux. +You should be advised that neither the Network Research Group at LBNL +nor the Tcpdump Group ever generated a release with this version number. +The LBNL Network Research Group notes with interest that a standard +cracker trick to get people to install trojans is to distribute bogus +packages that have a version number higher than the current release. +They also noted with annoyance that 90% of the Linux related bug reports +they got are due to changes made to unofficial versions of their page. +If you are having trouble but aren't using a version that came from +tcpdump.org, please try that before submitting a bug report! + +On Linux, libpcap will not work if the kernel does not have the packet +socket option enabled; see the README.linux file for information about +this. + +If you use AIX, you may not be able to build libpcap from this release. +We do not have an AIX system in house so it's impossible for us to test +AIX patches submitted to us. We are told that you must link against +/lib/pse.exp, that you must use AIX cc or a GNU C compiler newer than +2.7.2, and that you may need to run strload before running a libpcap +application. + +Read the README.aix file for information on installing libpcap and +configuring your system to be able to support libpcap. + +If you use NeXTSTEP, you will not be able to build libpcap from this +release. + +If you use SINIX, you should be able to build libpcap from this +release. It is known to compile and run on SINIX-Y/N 5.42 with the C-DS +V1.0 or V1.1 compiler. But note that in some releases of SINIX, yacc +emits incorrect code; if grammar.y fails to compile, change every +occurence of: + + #ifdef YYDEBUG + +to: + #if YYDEBUG + +Another workaround is to use flex and bison. + +If you use SCO, you might have trouble building libpcap from this +release. We do not have a machine running SCO and have not had reports +of anyone successfully building on it; the current release of libpcap +does not compile on SCO OpenServer 5. Although SCO apparently supports +DLPI to some extent, the DLPI in OpenServer 5 is very non-standard, and +it appears that completely new code would need to be written to capture +network traffic. SCO do not appear to provide tcpdump binaries for +OpenServer 5 or OpenServer 6 as part of SCO Skunkware: + + http://www.sco.com/skunkware/ + +If you use UnixWare, you might be able to build libpcap from this +release, or you might not. We do not have a machine running UnixWare, +so we have not tested it; however, SCO provide packages for libpcap +0.6.2 and tcpdump 3.7.1 in the UnixWare 7/Open UNIX 8 part of SCO +Skunkware, and the source package for libpcap 0.6.2 is not changed from +the libpcap 0.6.2 source release, so this release of libpcap might also +build without changes on UnixWare 7. + +If linking tcpdump fails with "Undefined: _alloca" when using bison on +a Sun4, your version of bison is broken. In any case version 1.16 or +higher is recommended (1.14 is known to cause problems 1.16 is known to +work). Either pick up a current version from: + + ftp://ftp.gnu.org/pub/gnu/bison + +or hack around it by inserting the lines: + + #ifdef __GNUC__ + #define alloca __builtin_alloca + #else + #ifdef sparc + #include + #else + char *alloca (); + #endif + #endif + +right after the (100 line!) GNU license comment in bison.simple, remove +grammar.[co] and fire up make again. + +If you use SunOS 4, your kernel must support streams NIT. If you run a +libpcap program and it dies with: + + /dev/nit: No such device + +You must add streams NIT support to your kernel configuration, run +config and boot the new kernel. + +If you are running a version of SunOS earlier than 4.1, you will need +to replace the Sun supplied /sys/sun{3,4,4c}/OBJ/nit_if.o with the +appropriate version from this distribution's SUNOS4 subdirectory and +build a new kernel: + + nit_if.o.sun3-sunos4 (any flavor of sun3) + nit_if.o.sun4c-sunos4.0.3c (SS1, SS1+, IPC, SLC, etc.) + nit_if.o.sun4-sunos4 (Sun4's not covered by + nit_if.o.sun4c-sunos4.0.3c) + +These nit replacements fix a bug that makes nit essentially unusable in +pre-SunOS 4.1. In addition, our sun4c-sunos4.0.3c nit gives you +timestamps to the resolution of the SS-1 clock (1 us) rather than the +lousy 20ms timestamps Sun gives you (tcpdump will print out the full +timestamp resolution if it finds it's running on a SS-1). + +FILES +----- +CHANGES - description of differences between releases +ChmodBPF/* - Mac OS X startup item to set ownership and permissions + on /dev/bpf* +CREDITS - people that have helped libpcap along +INSTALL.txt - this file +LICENSE - the license under which tcpdump is distributed +Makefile.in - compilation rules (input to the configure script) +README - description of distribution +README.aix - notes on using libpcap on AIX +README.dag - notes on using libpcap to capture on Endace DAG devices +README.hpux - notes on using libpcap on HP-UX +README.linux - notes on using libpcap on Linux +README.macosx - notes on using libpcap on Mac OS X +README.septel - notes on using libpcap to capture on Intel/Septel devices +README.sita - notes on using libpcap to capture on SITA devices +README.tru64 - notes on using libpcap on Digital/Tru64 UNIX +README.Win32 - notes on using libpcap on Win32 systems (with WinPcap) +SUNOS4 - pre-SunOS 4.1 replacement kernel nit modules +VERSION - version of this release +acconfig.h - support for post-2.13 autoconf +aclocal.m4 - autoconf macros +arcnet.h - ARCNET definitions +atmuni31.h - ATM Q.2931 definitions +bpf/net - copy of bpf_filter.c +bpf_dump.c - BPF program printing routines +bpf_filter.c - symlink to bpf/net/bpf_filter.c +bpf_image.c - BPF disassembly routine +config.guess - autoconf support +config.h.in - autoconf input +config.sub - autoconf support +configure - configure script (run this first) +configure.in - configure script source +dlpisubs.c - DLPI-related functions for pcap-dlpi.c and pcap-libdlpi.c +dlpisubs.h - DLPI-related function declarations +etherent.c - /etc/ethers support routines +ethertype.h - Ethernet protocol types and names definitions +fad-getad.c - pcap_findalldevs() for systems with getifaddrs() +fad-gifc.c - pcap_findalldevs() for systems with only SIOCGIFLIST +fad-glifc.c - pcap_findalldevs() for systems with SIOCGLIFCONF +fad-null.c - pcap_findalldevs() for systems without capture support +fad-sita.c - pcap_findalldevs() for systems with SITA support +fad-win32.c - pcap_findalldevs() for WinPcap +filtertest.c - test program for BPF compiler +findalldevstest.c - test program for pcap_findalldevs() +gencode.c - BPF code generation routines +gencode.h - BPF code generation definitions +grammar.y - filter string grammar +ieee80211.h - 802.11 definitions +inet.c - network routines +install-sh - BSD style install script +lbl/os-*.h - OS-dependent defines and prototypes +llc.h - 802.2 LLC SAP definitions +missing/* - replacements for missing library functions +mkdep - construct Makefile dependency list +msdos/* - drivers for MS-DOS capture support +nametoaddr.c - hostname to address routines +nlpid.h - OSI network layer protocol identifier definitions +net - symlink to bpf/net +optimize.c - BPF optimization routines +packaging - packaging information for building libpcap RPMs +pcap/bluetooth.h - public definition of DLT_BLUETOOTH_HCI_H4_WITH_PHDR header +pcap/bpf.h - BPF definitions +pcap/namedb.h - public libpcap name database definitions +pcap/pcap.h - public libpcap definitions +pcap/sll.h - public definition of DLT_LINUX_SLL header +pcap/usb.h - public definition of DLT_USB header +pcap-bpf.c - BSD Packet Filter support +pcap-bpf.h - header for backwards compatibility +pcap-bt-linux.c - Bluetooth capture support for Linux +pcap-bt-linux.h - Bluetooth capture support for Linux +pcap-dag.c - Endace DAG device capture support +pcap-dag.h - Endace DAG device capture support +pcap-dlpi.c - Data Link Provider Interface support +pcap-dos.c - MS-DOS capture support +pcap-dos.h - headers for MS-DOS capture support +pcap-enet.c - enet support +pcap-int.h - internal libpcap definitions +pcap-libdlpi.c - Data Link Provider Interface support for systems with libdlpi +pcap-linux.c - Linux packet socket support +pcap-namedb.h - header for backwards compatibility +pcap-nit.c - SunOS Network Interface Tap support +pcap-nit.h - SunOS Network Interface Tap definitions +pcap-null.c - dummy monitor support (allows offline use of libpcap) +pcap-pf.c - Ultrix and Digital/Tru64 UNIX Packet Filter support +pcap-pf.h - Ultrix and Digital/Tru64 UNIX Packet Filter definitions +pcap-septel.c - Intel/Septel device capture support +pcap-septel.h - Intel/Septel device capture support +pcap-sita.c - SITA device capture support +pcap-sita.h - SITA device capture support +pcap-sita.html - SITA device capture documentation +pcap-stdinc.h - includes and #defines for compiling on Win32 systems +pcap-snit.c - SunOS 4.x STREAMS-based Network Interface Tap support +pcap-snoop.c - IRIX Snoop network monitoring support +pcap-usb-linux.c - USB capture support for Linux +pcap-usb-linux.h - USB capture support for Linux +pcap-win32.c - WinPcap capture support +pcap.3pcap - manual entry for the library +pcap.c - pcap utility routines +pcap.h - header for backwards compatibility +pcap_*.3pcap - manual entries for library functions +pcap-filter.4 - manual entry for filter syntax +pcap-linktype.4 - manual entry for link-layer header types +ppp.h - Point to Point Protocol definitions +runlex.sh - wrapper for Lex/Flex +savefile.c - offline support +scanner.l - filter string scanner +sunatmpos.h - definitions for SunATM capturing +Win32 - headers and routines for building on Win32 systems diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..dea5f7d --- /dev/null +++ b/LICENSE @@ -0,0 +1,19 @@ +License: BSD + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: + + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + 3. The names of the authors may not be used to endorse or promote + products derived from this software without specific prior + written permission. + +THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR +IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. diff --git a/Makefile.in b/Makefile.in new file mode 100644 index 0000000..772cc7d --- /dev/null +++ b/Makefile.in @@ -0,0 +1,735 @@ +# Copyright (c) 1993, 1994, 1995, 1996 +# The Regents of the University of California. All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that: (1) source code distributions +# retain the above copyright notice and this paragraph in its entirety, (2) +# distributions including binary code include the above copyright notice and +# this paragraph in its entirety in the documentation or other materials +# provided with the distribution, and (3) all advertising materials mentioning +# features or use of this software display the following acknowledgement: +# ``This product includes software developed by the University of California, +# Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +# the University nor the names of its contributors may be used to endorse +# or promote products derived from this software without specific prior +# written permission. +# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +# +# @(#) $Header: /tcpdump/master/libpcap/Makefile.in,v 1.142 2008-11-22 17:30:24 guy Exp $ (LBL) + +# +# Various configurable paths (remember to edit Makefile.in, not Makefile) +# + +# Top level hierarchy +prefix = @prefix@ +exec_prefix = @exec_prefix@ +datarootdir = @datarootdir@ +# Pathname of directory to install the configure program +bindir = @bindir@ +# Pathname of directory to install the include files +includedir = @includedir@ +# Pathname of directory to install the library +libdir = @libdir@ +# Pathname of directory to install the man pages +mandir = @mandir@ + +# VPATH +srcdir = @srcdir@ +VPATH = @srcdir@ + +# +# You shouldn't need to edit anything below. +# + +LD = /usr/bin/ld +CC = @CC@ +AR = @AR@ +CCOPT = @V_CCOPT@ +INCLS = -I. @V_INCLS@ +DEFS = @DEFS@ @V_DEFS@ +ADDLOBJS = @ADDLOBJS@ +ADDLARCHIVEOBJS = @ADDLARCHIVEOBJS@ +LIBS = @LIBS@ +CFLAGS = @CFLAGS@ +LDFLAGS = @LDFLAGS@ +DYEXT = @DYEXT@ +V_RPATH_OPT = @V_RPATH_OPT@ +PROG=libpcap + +# Standard CFLAGS +FULL_CFLAGS = $(CCOPT) $(INCLS) $(DEFS) $(CFLAGS) + +INSTALL = @INSTALL@ +INSTALL_PROGRAM = @INSTALL_PROGRAM@ +INSTALL_DATA = @INSTALL_DATA@ +RANLIB = @RANLIB@ + +# +# Flex and bison allow you to specify the prefixes of the global symbols +# used by the generated parser. This allows programs to use lex/yacc +# and link against libpcap. If you don't have flex or bison, get them. +# +LEX = @V_LEX@ +YACC = @V_YACC@ + +# Explicitly define compilation rule since SunOS 4's make doesn't like gcc. +# Also, gcc does not remove the .o before forking 'as', which can be a +# problem if you don't own the file but can write to the directory. +.c.o: + @rm -f $@ + $(CC) $(FULL_CFLAGS) -c $(srcdir)/$*.c + +PSRC = pcap-@V_PCAP@.c @USB_SRC@ @BT_SRC@ @CAN_SRC@ @NETFILTER_SRC@ @CANUSB_SRC@ +FSRC = fad-@V_FINDALLDEVS@.c +SSRC = @SSRC@ +CSRC = pcap.c inet.c gencode.c optimize.c nametoaddr.c etherent.c \ + savefile.c sf-pcap.c sf-pcap-ng.c pcap-common.c \ + bpf_image.c bpf_dump.c +GENSRC = scanner.c grammar.c bpf_filter.c version.c +LIBOBJS = @LIBOBJS@ + +SRC = $(PSRC) $(FSRC) $(CSRC) $(SSRC) $(GENSRC) + +# We would like to say "OBJ = $(SRC:.c=.o)" but Ultrix's make cannot +# hack the extra indirection +OBJ = $(PSRC:.c=.o) $(FSRC:.c=.o) $(CSRC:.c=.o) $(SSRC:.c=.o) $(GENSRC:.c=.o) $(LIBOBJS) +PUBHDR = \ + pcap.h \ + pcap-bpf.h \ + pcap-namedb.h \ + pcap/bpf.h \ + pcap/bluetooth.h \ + pcap/ipnet.h \ + pcap/namedb.h \ + pcap/pcap.h \ + pcap/sll.h \ + pcap/vlan.h \ + pcap/usb.h + +HDR = $(PUBHDR) \ + arcnet.h \ + atmuni31.h \ + ethertype.h \ + gencode.h \ + ieee80211.h \ + llc.h \ + nlpid.h \ + pcap-common.h \ + pcap-int.h \ + pcap-stdinc.h \ + ppp.h \ + sf-pcap.h \ + sf-pcap-ng.h \ + sunatmpos.h + +TESTS = \ + filtertest \ + findalldevstest \ + nonblocktest \ + opentest \ + selpolltest + +TESTS_SRC = \ + tests/filtertest.c \ + tests/findalldevstest.c \ + tests/nonblocktest.c \ + tests/opentest.c \ + tests/reactivatetest.c \ + tests/selpolltest.c + +GENHDR = \ + scanner.h tokdefs.h version.h + +TAGFILES = \ + $(SRC) $(HDR) + +CLEANFILES = $(OBJ) libpcap.* $(TESTS) \ + $(PROG)-`cat $(srcdir)/VERSION`.tar.gz $(GENSRC) $(GENHDR) \ + lex.yy.c pcap-config + +MAN1 = pcap-config.1 + +MAN3PCAP_EXPAND = \ + pcap.3pcap.in \ + pcap_compile.3pcap.in \ + pcap_datalink.3pcap.in \ + pcap_dump_open.3pcap.in \ + pcap_list_datalinks.3pcap.in \ + pcap_list_tstamp_types.3pcap.in \ + pcap_open_dead.3pcap.in \ + pcap_open_offline.3pcap.in \ + pcap_set_tstamp_type.3pcap.in + +MAN3PCAP_NOEXPAND = \ + pcap_activate.3pcap \ + pcap_breakloop.3pcap \ + pcap_can_set_rfmon.3pcap \ + pcap_close.3pcap \ + pcap_create.3pcap \ + pcap_datalink_name_to_val.3pcap \ + pcap_datalink_val_to_name.3pcap \ + pcap_dump.3pcap \ + pcap_dump_close.3pcap \ + pcap_dump_file.3pcap \ + pcap_dump_flush.3pcap \ + pcap_dump_ftell.3pcap \ + pcap_file.3pcap \ + pcap_fileno.3pcap \ + pcap_findalldevs.3pcap \ + pcap_freecode.3pcap \ + pcap_get_selectable_fd.3pcap \ + pcap_geterr.3pcap \ + pcap_inject.3pcap \ + pcap_is_swapped.3pcap \ + pcap_lib_version.3pcap \ + pcap_lookupdev.3pcap \ + pcap_lookupnet.3pcap \ + pcap_loop.3pcap \ + pcap_major_version.3pcap \ + pcap_next_ex.3pcap \ + pcap_offline_filter.3pcap \ + pcap_open_live.3pcap \ + pcap_set_buffer_size.3pcap \ + pcap_set_datalink.3pcap \ + pcap_set_promisc.3pcap \ + pcap_set_rfmon.3pcap \ + pcap_set_snaplen.3pcap \ + pcap_set_timeout.3pcap \ + pcap_setdirection.3pcap \ + pcap_setfilter.3pcap \ + pcap_setnonblock.3pcap \ + pcap_snapshot.3pcap \ + pcap_stats.3pcap \ + pcap_statustostr.3pcap \ + pcap_strerror.3pcap \ + pcap_tstamp_type_name_to_val.3pcap \ + pcap_tstamp_type_val_to_name.3pcap + +MAN3PCAP = $(MAN3PCAP_NOEXPAND) $(MAN3PCAP_EXPAND:.in=) + +MANFILE = \ + pcap-savefile.manfile.in + +MANMISC = \ + pcap-filter.manmisc.in \ + pcap-linktype.manmisc.in \ + pcap-tstamp.manmisc.in + +EXTRA_DIST = \ + $(TESTS_SRC) \ + CHANGES \ + ChmodBPF/ChmodBPF \ + ChmodBPF/StartupParameters.plist \ + CREDITS \ + INSTALL.txt \ + LICENSE \ + Makefile.in \ + README \ + README.aix \ + README.dag \ + README.hpux \ + README.linux \ + README.macosx \ + README.septel \ + README.sita \ + README.tru64 \ + README.Win32 \ + SUNOS4/nit_if.o.sparc \ + SUNOS4/nit_if.o.sun3 \ + SUNOS4/nit_if.o.sun4c.4.0.3c \ + TODO \ + VERSION \ + aclocal.m4 \ + bpf/net/bpf_filter.c \ + chmod_bpf \ + config.guess \ + config.h.in \ + config.sub \ + configure \ + configure.in \ + dlpisubs.c \ + dlpisubs.h \ + fad-getad.c \ + fad-gifc.c \ + fad-glifc.c \ + fad-null.c \ + fad-sita.c \ + fad-win32.c \ + grammar.y \ + install-sh \ + lbl/os-aix4.h \ + lbl/os-hpux11.h \ + lbl/os-osf4.h \ + lbl/os-osf5.h \ + lbl/os-solaris2.h \ + lbl/os-sunos4.h \ + lbl/os-ultrix4.h \ + missing/snprintf.c \ + mkdep \ + msdos/bin2c.c \ + msdos/common.dj \ + msdos/makefile \ + msdos/makefile.dj \ + msdos/makefile.wc \ + msdos/ndis2.c \ + msdos/ndis2.h \ + msdos/ndis_0.asm \ + msdos/pkt_rx0.asm \ + msdos/pkt_rx1.s \ + msdos/pktdrvr.c \ + msdos/pktdrvr.h \ + msdos/readme.dos \ + org.tcpdump.chmod_bpf.plist \ + packaging/pcap.spec.in \ + pcap-bpf.c \ + pcap-bt-linux.c \ + pcap-bt-linux.h \ + pcap-can-linux.c \ + pcap-can-linux.h \ + pcap-canusb-linux.c \ + pcap-canusb-linux.h \ + pcap-config.in \ + pcap-dag.c \ + pcap-dag.h \ + pcap-dlpi.c \ + pcap-dos.c \ + pcap-dos.h \ + pcap-enet.c \ + pcap-int.h \ + pcap-libdlpi.c \ + pcap-linux.c \ + pcap-namedb.h \ + pcap-netfilter-linux.c \ + pcap-netfilter-linux.h \ + pcap-nit.c \ + pcap-null.c \ + pcap-pf.c \ + pcap-septel.c \ + pcap-septel.h \ + pcap-sita.h \ + pcap-sita.c \ + pcap-sita.html \ + pcap-snf.c \ + pcap-snf.h \ + pcap-snit.c \ + pcap-snoop.c \ + pcap-usb-linux.c \ + pcap-usb-linux.h \ + pcap-win32.c \ + runlex.sh \ + scanner.l \ + Win32/Include/Gnuc.h \ + Win32/Include/addrinfo.h \ + Win32/Include/bittypes.h \ + Win32/Include/cdecl_ext.h \ + Win32/Include/inetprivate.h \ + Win32/Include/ip6_misc.h \ + Win32/Include/sockstorage.h \ + Win32/Include/arpa/nameser.h \ + Win32/Include/net/if.h \ + Win32/Include/net/netdb.h \ + Win32/Include/net/paths.h \ + Win32/Prj/libpcap.dsp \ + Win32/Prj/libpcap.dsw \ + Win32/Src/ffs.c \ + Win32/Src/gai_strerror.c \ + Win32/Src/getaddrinfo.c \ + Win32/Src/getnetbynm.c \ + Win32/Src/getnetent.c \ + Win32/Src/getopt.c \ + Win32/Src/getservent.c \ + Win32/Src/inet_aton.c \ + Win32/Src/inet_net.c \ + Win32/Src/inet_pton.c + +all: libpcap.a shared pcap-config + +libpcap.a: $(OBJ) + @rm -f $@ + $(AR) rc $@ $(OBJ) $(ADDLARCHIVEOBJS) + $(RANLIB) $@ + +shared: libpcap.$(DYEXT) + +libpcap.so: $(OBJ) + @rm -f $@ + VER=`cat $(srcdir)/VERSION`; \ + MAJOR_VER=`sed 's/\([0-9][0-9]*\)\..*/\1/' $(srcdir)/VERSION`; \ + @V_SHLIB_CMD@ @V_SHLIB_OPT@ @V_SONAME_OPT@$@.$$MAJOR_VER $(LDFLAGS) \ + -o $@.$$VER $(OBJ) $(ADDLOBJS) $(LIBS) + +# +# The following rule succeeds, but the result is untested. +# +# In Mac OS X, the libpcap dylib has the name "libpcap.A.dylib", with +# its full path as the install_name, and with the compatibility and +# current version both set to 1. The compatibility version is set to +# 1 so that programs built with a newer version of the library will run +# against older versions; multi-platform software probably will fail if +# it uses APIs added in the newer version, but Mac OS X-specific software +# will use weak linking and check at run time whether those APIs are +# available. +# +# We also use "A" as the major version, and 1 as the compatibility version, +# but set the current version to the value in VERSION, with any non-numeric +# stuff stripped off (the compatibility and current version must be of the +# form X[.Y[.Z]], with Y and Z possibly absent, and with all components +# numeric). +# +libpcap.dylib: $(OBJ) + rm -f libpcap*.dylib + VER=`cat $(srcdir)/VERSION`; \ + MAJOR_VER=A; \ + COMPAT_VER=1; \ + CURRENT_VER=`sed 's/[^0-9.].*$$//' $(srcdir)/VERSION`; \ + $(CC) -dynamiclib -undefined error $(LDFLAGS) \ + -o libpcap.$$VER.dylib $(OBJ) $(ADDLOBJS) $(LIBS) \ + -install_name $(libdir)/libpcap.$$MAJOR_VER.dylib \ + -compatibility_version $$COMPAT_VER \ + -current_version $$CURRENT_VER + +# +# The HP-UX linker manual says that the convention for a versioned library +# is libXXX.{number}, not libXXX.sl.{number}. That appears to be the case +# on at least one HP-UX 11.00 system; libXXX.sl is a symlink to +# libXXX.{number}. +# +# The manual also says "library-level versioning" (think "sonames") was +# added in HP-UX 10.0. +# +# XXX - this assumes we're using the HP linker, rather than the GNU +# linker, even with GCC. +# +libpcap.sl: $(OBJ) + @MAJOR_VER=`sed 's/\([0-9][0-9]*\)\..*/\1/' $(srcdir)/VERSION`; \ + rm -f libpcap.$$MAJOR_VER + MAJOR_VER=`sed 's/\([0-9][0-9]*\)\..*/\1/' $(srcdir)/VERSION`; \ + ld -b $(LDFLAGS) -o libpcap.$$MAJOR_VER +h libpcap.$$MAJOR_VER \ + $(OBJ) $(ADDLOBJS) $(LIBS) + +# +# AIX is different from everybody else. A shared library is an archive +# library with one or more shared-object components. We still build a +# normal static archive library on AIX, for the benefit of the traditional +# scheme of building libpcap and tcpdump in subdirectories of the +# same directory, with tcpdump statically linked with the libpcap +# in question, but we also build a shared library as "libpcap.shareda" +# and install *it*, rather than the static library, as "libpcap.a". +# +libpcap.shareda: $(OBJ) + @rm -f $@ shr.o + $(CC) @V_SHLIB_OPT@ -o shr.o $(OBJ) $(ADDLOBJS) $(LDFLAGS) $(LIBS) + $(AR) rc $@ shr.o + +# +# For platforms that don't support shared libraries (or on which we +# don't support shared libraries). +# +libpcap.none: + +scanner.c: $(srcdir)/scanner.l + @rm -f $@ + $(srcdir)/runlex.sh $(LEX) -o$@ $< + +scanner.o: scanner.c tokdefs.h + $(CC) $(FULL_CFLAGS) -c scanner.c + +pcap.o: version.h + +tokdefs.h: grammar.c +grammar.c: $(srcdir)/grammar.y + @rm -f grammar.c tokdefs.h + $(YACC) -d $< + mv y.tab.c grammar.c + mv y.tab.h tokdefs.h + +grammar.o: grammar.c + @rm -f $@ + $(CC) $(FULL_CFLAGS) -Dyylval=pcap_lval -c grammar.c + +version.o: version.c + $(CC) $(FULL_CFLAGS) -c version.c + +snprintf.o: $(srcdir)/missing/snprintf.c + $(CC) $(FULL_CFLAGS) -o $@ -c $(srcdir)/missing/snprintf.c + +version.c: $(srcdir)/VERSION + @rm -f $@ + if grep GIT ${srcdir}/VERSION >/dev/null; then \ + read ver <${srcdir}/VERSION; \ + echo $$ver | tr -d '\012'; \ + date +_%Y_%m_%d; \ + else \ + cat ${srcdir}/VERSION; \ + fi | sed -e 's/.*/char pcap_version[] = "&";/' > $@ + +# +# NOTE: this really is supposed to be static; importing a string +# from a shared library does not work very well on many +# versions of UNIX (Solaris, Linux, and the BSDs, for example), +# so we make the version string static and return it from +# a function, which does work. +# +version.h: $(srcdir)/VERSION + @rm -f $@ + if grep GIT ${srcdir}/VERSION >/dev/null; then \ + read ver <${srcdir}/VERSION; \ + echo $$ver | tr -d '\012'; \ + date +_%Y_%m_%d; \ + else \ + cat ${srcdir}/VERSION; \ + fi | sed -e 's/.*/static const char pcap_version_string[] = "libpcap version &";/' > $@ + +bpf_filter.c: $(srcdir)/bpf/net/bpf_filter.c + rm -f bpf_filter.c + ln -s $(srcdir)/bpf/net/bpf_filter.c bpf_filter.c + +bpf_filter.o: bpf_filter.c + $(CC) $(FULL_CFLAGS) -c bpf_filter.c + +# +# Generate the pcap-config script. +# +# Some Makes, e.g. AIX Make and Solaris Make, can't handle "--file=$@.tmp:$<"; +# for example, the Solaris 9 make man page says +# +# Because make assigns $< and $* as it would for implicit rules +# (according to the suffixes list and the directory contents), +# they may be unreliable when used within explicit target entries. +# +# and this is an explicit target entry. +# +# Therefore, instead of using $<, we explicitly put in $(srcdir)/pcap-config.in. +# +pcap-config: $(srcdir)/pcap-config.in ./config.status + @rm -f $@ $@.tmp + ./config.status --file=$@.tmp:$(srcdir)/pcap-config.in + mv $@.tmp $@ + chmod a+x $@ + +# +# Test programs - not built by default, and not installed. +# +tests: $(TESTS) + +filtertest: tests/filtertest.c libpcap.a + $(CC) $(FULL_CFLAGS) -I. -L. -o filtertest $(srcdir)/tests/filtertest.c libpcap.a $(LIBS) + +findalldevstest: tests/findalldevstest.c libpcap.a + $(CC) $(FULL_CFLAGS) -I. -L. -o findalldevstest $(srcdir)/tests/findalldevstest.c libpcap.a $(LIBS) + +nonblocktest: tests/nonblocktest.c libpcap.a + $(CC) $(FULL_CFLAGS) -I. -L. -o nonblocktest $(srcdir)/tests/nonblocktest.c libpcap.a $(LIBS) + +opentest: tests/opentest.c libpcap.a + $(CC) $(FULL_CFLAGS) -I. -L. -o opentest $(srcdir)/tests/opentest.c libpcap.a $(LIBS) + +selpolltest: tests/selpolltest.c libpcap.a + $(CC) $(FULL_CFLAGS) -I. -L. -o selpolltest $(srcdir)/tests/selpolltest.c libpcap.a $(LIBS) + +install: install-shared install-archive pcap-config + [ -d $(DESTDIR)$(libdir) ] || \ + (mkdir -p $(DESTDIR)$(libdir); chmod 755 $(DESTDIR)$(libdir)) + [ -d $(DESTDIR)$(includedir) ] || \ + (mkdir -p $(DESTDIR)$(includedir); chmod 755 $(DESTDIR)$(includedir)) + [ -d $(DESTDIR)$(includedir)/pcap ] || \ + (mkdir -p $(DESTDIR)$(includedir)/pcap; chmod 755 $(DESTDIR)$(includedir)/pcap) + [ -d $(DESTDIR)$(mandir)/man1 ] || \ + (mkdir -p $(DESTDIR)$(mandir)/man1; chmod 755 $(DESTDIR)$(mandir)/man1) + [ -d $(DESTDIR)$(mandir)/man3 ] || \ + (mkdir -p $(DESTDIR)$(mandir)/man3; chmod 755 $(DESTDIR)$(mandir)/man3) + [ -d $(DESTDIR)$(mandir)/man@MAN_FILE_FORMATS@ ] || \ + (mkdir -p $(DESTDIR)$(mandir)/man@MAN_FILE_FORMATS@; chmod 755 $(DESTDIR)$(mandir)/man@MAN_FILE_FORMATS@) + [ -d $(DESTDIR)$(mandir)/man@MAN_MISC_INFO@ ] || \ + (mkdir -p $(DESTDIR)$(mandir)/man@MAN_MISC_INFO@; chmod 755 $(DESTDIR)$(mandir)/man@MAN_MISC_INFO@) + for i in $(PUBHDR); do \ + $(INSTALL_DATA) $(srcdir)/$$i \ + $(DESTDIR)$(includedir)/$$i; done + [ -d $(DESTDIR)$(bindir) ] || \ + (mkdir -p $(DESTDIR)$(bindir); chmod 755 $(DESTDIR)$(bindir)) + $(INSTALL_PROGRAM) pcap-config $(DESTDIR)$(bindir)/pcap-config + for i in $(MAN1); do \ + $(INSTALL_DATA) $(srcdir)/$$i \ + $(DESTDIR)$(mandir)/man1/$$i; done + for i in $(MAN3PCAP_NOEXPAND); do \ + $(INSTALL_DATA) $(srcdir)/$$i \ + $(DESTDIR)$(mandir)/man3/$$i; done + for i in $(MAN3PCAP_EXPAND:.in=); do \ + $(INSTALL_DATA) $$i \ + $(DESTDIR)$(mandir)/man3/$$i; done + rm -f $(DESTDIR)$(mandir)/man3/pcap_datalink_val_to_description.3pcap + ln $(DESTDIR)$(mandir)/man3/pcap_datalink_val_to_name.3pcap \ + $(DESTDIR)$(mandir)/man3/pcap_datalink_val_to_description.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_dump_fopen.3pcap + ln $(DESTDIR)$(mandir)/man3/pcap_dump_open.3pcap \ + $(DESTDIR)$(mandir)/man3/pcap_dump_fopen.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_freealldevs.3pcap + ln $(DESTDIR)$(mandir)/man3/pcap_findalldevs.3pcap \ + $(DESTDIR)$(mandir)/man3/pcap_freealldevs.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_perror.3pcap + ln $(DESTDIR)$(mandir)/man3/pcap_geterr.3pcap \ + $(DESTDIR)$(mandir)/man3/pcap_perror.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_sendpacket.3pcap + ln $(DESTDIR)$(mandir)/man3/pcap_inject.3pcap \ + $(DESTDIR)$(mandir)/man3/pcap_sendpacket.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_free_datalinks.3pcap + ln $(DESTDIR)$(mandir)/man3/pcap_list_datalinks.3pcap \ + $(DESTDIR)$(mandir)/man3/pcap_free_datalinks.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_free_tstamp_types.3pcap + ln $(DESTDIR)$(mandir)/man3/pcap_list_tstamp_types.3pcap \ + $(DESTDIR)$(mandir)/man3/pcap_free_tstamp_types.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_dispatch.3pcap + ln $(DESTDIR)$(mandir)/man3/pcap_loop.3pcap \ + $(DESTDIR)$(mandir)/man3/pcap_dispatch.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_minor_version.3pcap + ln $(DESTDIR)$(mandir)/man3/pcap_major_version.3pcap \ + $(DESTDIR)$(mandir)/man3/pcap_minor_version.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_next.3pcap + ln $(DESTDIR)$(mandir)/man3/pcap_next_ex.3pcap \ + $(DESTDIR)$(mandir)/man3/pcap_next.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_fopen_offline.3pcap + ln $(DESTDIR)$(mandir)/man3/pcap_open_offline.3pcap \ + $(DESTDIR)$(mandir)/man3/pcap_fopen_offline.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_getnonblock.3pcap + ln $(DESTDIR)$(mandir)/man3/pcap_setnonblock.3pcap \ + $(DESTDIR)$(mandir)/man3/pcap_getnonblock.3pcap + for i in $(MANFILE); do \ + $(INSTALL_DATA) `echo $$i | sed 's/.manfile.in/.manfile/'` \ + $(DESTDIR)$(mandir)/man@MAN_FILE_FORMATS@/`echo $$i | sed 's/.manfile.in/.@MAN_FILE_FORMATS@/'`; done + for i in $(MANMISC); do \ + $(INSTALL_DATA) `echo $$i | sed 's/.manmisc.in/.manmisc/'` \ + $(DESTDIR)$(mandir)/man@MAN_MISC_INFO@/`echo $$i | sed 's/.manmisc.in/.@MAN_MISC_INFO@/'`; done + +install-shared: install-shared-$(DYEXT) +install-shared-so: libpcap.so + [ -d $(DESTDIR)$(libdir) ] || \ + (mkdir -p $(DESTDIR)$(libdir); chmod 755 $(DESTDIR)$(libdir)) + VER=`cat $(srcdir)/VERSION`; \ + MAJOR_VER=`sed 's/\([0-9][0-9]*\)\..*/\1/' $(srcdir)/VERSION`; \ + $(INSTALL_PROGRAM) libpcap.so.$$VER $(DESTDIR)$(libdir)/libpcap.so.$$VER; \ + ln -sf libpcap.so.$$VER $(DESTDIR)$(libdir)/libpcap.so.$$MAJOR_VER; \ + ln -sf libpcap.so.$$MAJOR_VER $(DESTDIR)$(libdir)/libpcap.so +install-shared-dylib: libpcap.dylib + [ -d $(DESTDIR)$(libdir) ] || \ + (mkdir -p $(DESTDIR)$(libdir); chmod 755 $(DESTDIR)$(libdir)) + VER=`cat $(srcdir)/VERSION`; \ + MAJOR_VER=A; \ + $(INSTALL_PROGRAM) libpcap.$$VER.dylib $(DESTDIR)$(libdir)/libpcap.$$VER.dylib; \ + ln -sf libpcap.$$VER.dylib $(DESTDIR)$(libdir)/libpcap.$$MAJOR_VER.dylib; \ + ln -sf libpcap.$$MAJOR_VER.dylib $(DESTDIR)$(libdir)/libpcap.dylib +install-shared-sl: libpcap.sl + [ -d $(DESTDIR)$(libdir) ] || \ + (mkdir -p $(DESTDIR)$(libdir); chmod 755 $(DESTDIR)$(libdir)) + MAJOR_VER=`sed 's/\([0-9][0-9]*\)\..*/\1/' $(srcdir)/VERSION`; \ + $(INSTALL_PROGRAM) libpcap.$$MAJOR_VER $(DESTDIR)$(libdir) + ln -sf libpcap.$$MAJOR_VER $(DESTDIR)$(libdir)/libpcap.sl +install-shared-shareda: libpcap.shareda + # + # AIX shared libraries are weird. They're archive libraries + # with one or more shared object components. + # + [ -d $(DESTDIR)$(libdir) ] || \ + (mkdir -p $(DESTDIR)$(libdir); chmod 755 $(DESTDIR)$(libdir)) + $(INSTALL_PROGRAM) libpcap.shareda $(DESTDIR)$(libdir)/libpcap.a +install-shared-none: + +install-archive: install-archive-$(DYEXT) +install-archive-so install-archive-dylib install-archive-sl install-archive-none: libpcap.a + # + # Most platforms have separate suffixes for shared and + # archive libraries, so we install both. + # + [ -d $(DESTDIR)$(libdir) ] || \ + (mkdir -p $(DESTDIR)$(libdir); chmod 755 $(DESTDIR)$(libdir)) + $(INSTALL_DATA) libpcap.a $(DESTDIR)$(libdir)/libpcap.a + $(RANLIB) $(DESTDIR)$(libdir)/libpcap.a +install-archive-shareda: + # + # AIX, however, doesn't, so we don't install the archive + # library on AIX. + # + +uninstall: uninstall-shared + rm -f $(DESTDIR)$(libdir)/libpcap.a + for i in $(PUBHDR); do \ + rm -f $(DESTDIR)$(includedir)/$$i; done + -rmdir $(DESTDIR)$(includedir)/pcap + rm -f $(DESTDIR)/$(bindir)/pcap-config + for i in $(MAN1); do \ + rm -f $(DESTDIR)$(mandir)/man1/$$i; done + for i in $(MAN3PCAP); do \ + rm -f $(DESTDIR)$(mandir)/man3/$$i; done + rm -f $(DESTDIR)$(mandir)/man3/pcap_datalink_val_to_description.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_dump_fopen.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_freealldevs.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_perror.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_sendpacket.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_free_datalinks.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_free_tstamp_types.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_dispatch.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_minor_version.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_next.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_fopen_offline.3pcap + rm -f $(DESTDIR)$(mandir)/man3/pcap_getnonblock.3pcap + for i in $(MANFILE); do \ + rm -f $(DESTDIR)$(mandir)/man@MAN_FILE_FORMATS@/`echo $$i | sed 's/.manfile.in/.@MAN_FILE_FORMATS@/'`; done + for i in $(MANMISC); do \ + rm -f $(DESTDIR)$(mandir)/man@MAN_MISC_INFO@/`echo $$i | sed 's/.manmisc.in/.@MAN_MISC_INFO@/'`; done + +uninstall-shared: uninstall-shared-$(DYEXT) +uninstall-shared-so: + VER=`cat $(srcdir)/VERSION`; \ + MAJOR_VER=`sed 's/\([0-9][0-9]*\)\..*/\1/' $(srcdir)/VERSION`; \ + rm -f $(DESTDIR)$(libdir)/libpcap.so.$$VER; \ + rm -f $(DESTDIR)$(libdir)/libpcap.so.$$MAJOR_VER; \ + rm -f $(DESTDIR)$(libdir)/libpcap.so +uninstall-shared-dylib: + VER=`cat $(srcdir)/VERSION`; \ + MAJOR_VER=A; \ + rm -f $(DESTDIR)$(libdir)/libpcap.$$VER.dylib; \ + rm -f $(DESTDIR)$(libdir)/libpcap.$$MAJOR_VER.dylib; \ + rm -f $(DESTDIR)$(libdir)/libpcap.dylib +uninstall-shared-sl: + MAJOR_VER=`sed 's/\([0-9][0-9]*\)\..*/\1/' $(srcdir)/VERSION`; \ + rm -f $(DESTDIR)$(libdir)/libpcap.$$MAJOR_VER; \ + rm -f $(DESTDIR)$(libdir)/libpcap.sl +uninstall-shared-shareda: + rm -f $(DESTDIR)$(libdir)/libpcap.a +uninstall-shared-none: + +clean: + rm -f $(CLEANFILES) + +distclean: clean + rm -f Makefile config.cache config.log config.status \ + config.h gnuc.h net os-proto.h bpf_filter.c pcap-config \ + stamp-h stamp-h.in + rm -f $(MAN3PCAP_EXPAND:.in=) $(MANFILE:.in=) $(MANMISC:.in=) + rm -rf autom4te.cache + +tags: $(TAGFILES) + ctags -wtd $(TAGFILES) + +packaging/pcap.spec: packaging/pcap.spec.in VERSION + RPMVERSION=`cat VERSION | sed s/-.*//g`; \ + sed -e s/@VERSION@/$$RPMVERSION/ -e s/@NAME@/libpcap-`cat VERSION`/ $< > $@ + +releasetar: + @cwd=`pwd` ; dir=`basename $$cwd` ; name=$(PROG)-`cat VERSION` ; \ + mkdir $$name; \ + tar cf - $(CSRC) $(HDR) $(MAN1) $(MAN3PCAP_EXPAND) \ + $(MAN3PCAP_NOEXPAND) $(MANFILE) $(MANMISC) $(EXTRA_DIST) | \ + (cd $$name; tar xf -); \ + tar -c -z -f $$name.tar.gz $$name; \ + rm -rf $$name + +depend: $(GENSRC) $(GENHDR) bpf_filter.c + ./mkdep -c $(CC) $(DEFS) $(INCLS) $(SRC) + +Makefile: Makefile.in config.status + ./config.status + @echo your Makefile was out of date, now run $(MAKE) again + exit 1 diff --git a/README b/README new file mode 100644 index 0000000..a206474 --- /dev/null +++ b/README @@ -0,0 +1,105 @@ +@(#) $Header: /tcpdump/master/libpcap/README,v 1.34 2008-12-14 19:44:14 guy Exp $ (LBL) + +LIBPCAP 1.x.y + +www.tcpdump.org + +Please send inquiries/comments/reports to: + tcpdump-workers@lists.tcpdump.org + +Anonymous Git is available via: + git clone git://bpf.tcpdump.org/libpcap + +Version 1.x.y of LIBPCAP can be retrieved with the CVS tag "libpcap_1_{x}rel{y}": + cvs -d :pserver:tcpdump@cvs.tcpdump.org:/tcpdump/master checkout -r libpcap_1_{x}rel{y} libpcap + +Please submit patches against the master copy to the libpcap project on +sourceforge.net. + +formerly from Lawrence Berkeley National Laboratory + Network Research Group + ftp://ftp.ee.lbl.gov/libpcap.tar.Z (0.4) + +This directory contains source code for libpcap, a system-independent +interface for user-level packet capture. libpcap provides a portable +framework for low-level network monitoring. Applications include +network statistics collection, security monitoring, network debugging, +etc. Since almost every system vendor provides a different interface +for packet capture, and since we've developed several tools that +require this functionality, we've created this system-independent API +to ease in porting and to alleviate the need for several +system-dependent packet capture modules in each application. + +For some platforms there are README.{system} files that discuss issues +with the OS's interface for packet capture on those platforms, such as +how to enable support for that interface in the OS, if it's not built in +by default. + +The libpcap interface supports a filtering mechanism based on the +architecture in the BSD packet filter. BPF is described in the 1993 +Winter Usenix paper ``The BSD Packet Filter: A New Architecture for +User-level Packet Capture''. A compressed PostScript version can be +found at + + ftp://ftp.ee.lbl.gov/papers/bpf-usenix93.ps.Z + +or + + http://www.tcpdump.org/papers/bpf-usenix93.ps.Z + +and a gzipped version can be found at + + http://www.tcpdump.org/papers/bpf-usenix93.ps.gz + +A PDF version can be found at + + http://www.tcpdump.org/papers/bpf-usenix93.pdf + +Although most packet capture interfaces support in-kernel filtering, +libpcap utilizes in-kernel filtering only for the BPF interface. +On systems that don't have BPF, all packets are read into user-space +and the BPF filters are evaluated in the libpcap library, incurring +added overhead (especially, for selective filters). Ideally, libpcap +would translate BPF filters into a filter program that is compatible +with the underlying kernel subsystem, but this is not yet implemented. + +BPF is standard in 4.4BSD, BSD/OS, NetBSD, FreeBSD, OpenBSD, DragonFly +BSD, and Mac OS X; an older, modified and undocumented version is +standard in AIX. {DEC OSF/1, Digital UNIX, Tru64 UNIX} uses the +packetfilter interface but has been extended to accept BPF filters +(which libpcap utilizes). Also, you can add BPF filter support to +Ultrix using the kernel source and/or object patches available in: + + http://www.tcpdump.org/other/bpfext42.tar.Z + +Linux, in the 2.2 kernel and later kernels, has a "Socket Filter" +mechanism that accepts BPF filters; see the README.linux file for +information on configuring that option. + +Note to Linux distributions and *BSD systems that include libpcap: + +There's now a rule to make a shared library, which should work on Linux +and *BSD, among other platforms. + +It sets the soname of the library to "libpcap.so.1"; this is what it +should be, *NOT* libpcap.so.1.x or libpcap.so.1.x.y or something such as +that. + +We've been maintaining binary compatibility between libpcap releases for +quite a while; there's no reason to tie a binary linked with libpcap to +a particular release of libpcap. + +Problems, bugs, questions, desirable enhancements, etc. should be sent +to the address "tcpdump-workers@lists.tcpdump.org". Bugs, support +requests, and feature requests may also be submitted on the SourceForge +site for libpcap at + + http://sourceforge.net/projects/libpcap/ + +Source code contributions, etc. should be sent to the email address +submitted as patches on the SourceForge site for libpcap. + +Current versions can be found at www.tcpdump.org, or the SourceForge +site for libpcap. + + - The TCPdump team diff --git a/README.Win32 b/README.Win32 new file mode 100644 index 0000000..503836e --- /dev/null +++ b/README.Win32 @@ -0,0 +1,46 @@ +Under Win32, libpcap is integrated in the WinPcap packet capture system. +WinPcap provides a framework that allows libpcap to capture the packets +under Windows 95, Windows 98, Windows ME, Windows NT 4, Windows 2000 +and Windows XP. +WinPcap binaries and source code can be found at http://winpcap.polito.it: +they include also a developer's pack with all the necessary to compile +libpcap-based applications under Windows. + +How to compile libpcap with Visual Studio +----------------------------------------- + +In order to compile libpcap you will need: + +- version 6 (or higher) of Microsoft Visual Studio +- The November 2001 (or later) edition of Microsoft Platform +Software Development Kit (SDK), that contains some necessary includes +for IPv6 support. You can download it from http://www.microsoft.com/sdk +- the latest WinPcap sources from http://winpcap.polito.it/install + +The WinPcap source code already contains a recent (usually the latest +stable) version of libpcap. If you need to compile a different one, +simply download it from www.tcpdump.org and copy the sources in the +winpcap\wpcap\libpcap folder of the WinPcap distribution. If you want to +compile a libpcap source retrieved from the tcpdump.org Git, you will +have to create the scanner and the grammar by hand (with lex and yacc) +or with the cygnus makefile, since The Visual Studio project is not able +to build them. + +Open the project file winpcap\wpcap\prj\wpcap.dsw with Visual Studio and +build wpcap.dll. wpcap.lib, the library file to link with the applications, +will be generated in winpcap\wpcap\lib\. wpcap.dll will be generated in +winpcap\wpcap\prj\release or winpcap\wpcap\prj\debug depending on the type +of binary that is being created. + +How to compile libpcap with Cygnus +---------------------------------- + +To build wpcap.dll, cd to the directory WPCAP/PRJ of the WinPcap source code +distribution and type "make". libwpcap.a, the library file to link with the +applications, will be generated in winpcap\wpcap\lib\. wpcap.dll will be +generated in winpcap\wpcap\prj. + +Remember, you CANNOT use the MSVC-generated .lib files with gcc, use +libwpcap.a instead. + +"make install" installs wpcap.dll in the Windows system folder. diff --git a/README.aix b/README.aix new file mode 100644 index 0000000..b32fa58 --- /dev/null +++ b/README.aix @@ -0,0 +1,81 @@ +Using BPF: + +(1) AIX 4.x's version of BPF is undocumented and somewhat unstandard; the + current BPF support code includes changes that should work around + that; it appears to compile and work on at least one AIX 4.3.3 + machine. + + Note that the BPF driver and the "/dev/bpf" devices might not exist + on your machine; AIX's tcpdump loads the driver and creates the + devices if they don't already exist. Our libpcap should do the + same, and the configure script should detect that it's on an AIX + system and choose BPF even if the devices aren't there. + +(2) If libpcap doesn't compile on your machine when configured to use + BPF, or if the workarounds fail to make it work correctly, you + should send to tcpdump-workers@lists.tcpdump.org a detailed bug + report (if the compile fails, send us the compile error messages; + if it compiles but fails to work correctly, send us as detailed as + possible a description of the symptoms, including indications of the + network link-layer type being wrong or time stamps being wrong). + + If you fix the problems yourself, please submit a patch to + + http://sourceforge.net/projects/libpcap/ + + so we can incorporate them into the next release. + + If you don't fix the problems yourself, you can, as a workaround, + make libpcap use DLPI instead of BPF. + + This can be done by specifying the flag: + + --with-pcap=dlpi + + to the "configure" script for libpcap. + +If you use DLPI: + +(1) It is a good idea to have the latest version of the DLPI driver on + your system, since certain versions may be buggy and cause your AIX + system to crash. DLPI is included in the fileset bos.rte.tty. I + found that the DLPI driver that came with AIX 4.3.2 was buggy, and + had to upgrade to bos.rte.tty 4.3.2.4: + + lslpp -l bos.rte.tty + + bos.rte.tty 4.3.2.4 COMMITTED Base TTY Support and Commands + + Updates for AIX filesets can be obtained from: + ftp://service.software.ibm.com/aix/fixes/ + + These updates can be installed with the smit program. + +(2) After compiling libpcap, you need to make sure that the DLPI driver + is loaded. Type: + + strload -q -d dlpi + + If the result is: + + dlpi: yes + + then the DLPI driver is loaded correctly. + + If it is: + + dlpi: no + + Then you need to type: + + strload -f /etc/dlpi.conf + + Check again with strload -q -d dlpi that the dlpi driver is loaded. + + Alternatively, you can uncomment the lines for DLPI in + /etc/pse.conf and reboot the machine; this way DLPI will always + be loaded when you boot your system. + +(3) There appears to be a problem in the DLPI code in some versions of + AIX, causing a warning about DL_PROMISC_MULTI failing; this might + be responsible for DLPI not being able to capture outgoing packets. diff --git a/README.dag b/README.dag new file mode 100644 index 0000000..acf97ed --- /dev/null +++ b/README.dag @@ -0,0 +1,114 @@ + +The following instructions apply if you have a Linux or FreeBSD platform and +want libpcap to support the DAG range of passive network monitoring cards from +Endace (http://www.endace.com, see below for further contact details). + +1) Install and build the DAG software distribution by following the +instructions supplied with that package. Current Endace customers can download +the DAG software distibution from https://www.endace.com + +2) Configure libcap. To allow the 'configure' script to locate the DAG +software distribution use the '--with-dag' option: + + ./configure --with-dag=DIR + +Where DIR is the root of the DAG software distribution, for example +/var/src/dag. If the DAG software is correctly detected 'configure' will +report: + + checking whether we have DAG API... yes + +If 'configure' reports that there is no DAG API, the directory may have been +incorrectly specified or the DAG software was not built before configuring +libpcap. + +See also the libpcap INSTALL.txt file for further libpcap configuration +options. + +Building libpcap at this stage will include support for both the native packet +capture stream (linux or bpf) and for capturing from DAG cards. To build +libpcap with only DAG support specify the capture type as 'dag' when +configuring libpcap: + + ./configure --with-dag=DIR --with-pcap=dag + +Applications built with libpcap configured in this way will only detect DAG +cards and will not capture from the native OS packet stream. + +---------------------------------------------------------------------- + +Libpcap when built for DAG cards against dag-2.5.1 or later releases: + +Timeouts are supported. pcap_dispatch() will return after to_ms milliseconds +regardless of how many packets are received. If to_ms is zero pcap_dispatch() +will block waiting for data indefinitely. + +pcap_dispatch() will block on and process a minimum of 64kB of data (before +filtering) for efficiency. This can introduce high latencies on quiet +interfaces unless a timeout value is set. The timeout expiring will override +the 64kB minimum causing pcap_dispatch() to process any available data and +return. + +pcap_setnonblock is supported. When nonblock is set, pcap_dispatch() will +check once for available data, process any data available up to count, then +return immediately. + +pcap_findalldevs() is supported, e.g. dag0, dag1... + +Some DAG cards can provide more than one 'stream' of received data. +This can be data from different physical ports, or separated by filtering +or load balancing mechanisms. Receive streams have even numbers, e.g. +dag0:0, dag0:2 etc. Specifying transmit streams for capture is not supported. + +pcap_setfilter() is supported, BPF programs run in userspace. + +pcap_setdirection() is not supported. Only received traffic is captured. +DAG cards normally do not have IP or link layer addresses assigned as +they are used to passively monitor links. + +pcap_breakloop() is supported. + +pcap_datalink() and pcap_list_datalinks() are supported. The DAG card does +not attempt to set the correct datalink type automatically where more than +one type is possible. + +pcap_stats() is supported. ps_drop is the number of packets dropped due to +RX stream buffer overflow, this count is before filters are applied (it will +include packets that would have been dropped by the filter). The RX stream +buffer size is user configurable outside libpcap, typically 16-512MB. + +pcap_get_selectable_fd() is not supported, as DAG cards do not support +poll/select methods. + +pcap_inject() and pcap_sendpacket() are not supported. + +Some DAG cards now support capturing to multiple virtual interfaces, called +streams. Capture streams have even numbers. These are available via libpcap +as separate interfaces, e.g. dag0:0, dag0:2, dag0:4 etc. dag0:0 is the same +as dag0. These are visible via pcap_findalldevs(). + +libpcap now does NOT set the card's hardware snaplen (slen). This must now be +set using the appropriate DAG coniguration program, e.g. dagthree, dagfour, +dagsix, dagconfig. This is because the snaplen is currently shared between +all of the streams. In future this may change if per-stream slen is +implemented. + +DAG cards by default capture entire packets including the L2 +CRC/FCS. If the card is not configured to discard the CRC/FCS, this +can confuse applications that use libpcap if they're not prepared for +packets to have an FCS. Libpcap now reads the environment variable +ERF_FCS_BITS to determine how many bits of CRC/FCS to strip from the +end of the captured frame. This defaults to 32 for use with +Ethernet. If the card is configured to strip the CRC/FCS, then set +ERF_FCS_BITS=0. If used with a HDLC/PoS/PPP/Frame Relay link with 16 +bit CRC/FCS, then set ERF_FCS_BITS=16. + +---------------------------------------------------------------------- + +Please submit bug reports via . + +Please also visit our Web site at: + + http://www.endace.com/ + +For more information about Endace DAG cards contact . diff --git a/README.hpux b/README.hpux new file mode 100644 index 0000000..88c27f8 --- /dev/null +++ b/README.hpux @@ -0,0 +1,254 @@ +For HP-UX 11i (11.11) and later, there are no known issues with +promiscuous mode under HP-UX. If you are using a earlier version of +HP-UX and cannot upgrade, please continue reading. + +HP-UX patches to fix packet capture problems + +Note that packet-capture programs such as tcpdump may, on HP-UX, not be +able to see packets sent from the machine on which they're running. +Some articles on groups.google.com discussing this are: + + http://groups.google.com/groups?selm=82ld3v%2480i%241%40mamenchi.zrz.TU-Berlin.DE + +which says: + + Newsgroups: comp.sys.hp.hpux + Subject: Re: Did someone made tcpdump working on 10.20 ? + Date: 12/08/1999 + From: Lutz Jaenicke + + In article <82ks5i$5vc$1@news1.dti.ne.jp>, mtsat + wrote: + >Hello, + > + >I downloaded and compiled tcpdump3.4 a couple of week ago. I tried to use + >it, but I can only see incoming data, never outgoing. + >Someone (raj) explained me that a patch was missing, and that this patch + >must me "patched" (poked) in order to see outbound data in promiscuous mode. + >Many things to do .... So the question is : did someone has already this + >"ready to use" PHNE_**** patch ? + + Two things: + 1. You do need a late "LAN products cumulative patch" (e.g. PHNE_18173 + for s700/10.20). + 2. You must use +echo 'lanc_outbound_promisc_flag/W1' | /usr/bin/adb -w /stand/vmunix /dev/kmem + You can insert this e.g. into /sbin/init.d/lan + + Best regards, + Lutz + +and + + http://groups.google.com/groups?selm=88cf4t%24p03%241%40web1.cup.hp.com + +which says: + + Newsgroups: comp.sys.hp.hpux + Subject: Re: tcpdump only shows incoming packets + Date: 02/15/2000 + From: Rick Jones + + Harald Skotnes wrote: + > I am running HPUX 11.0 on a C200 hanging on a 100Mb switch. I have + > compiled libpcap-0.4 an tcpdump-3.4 and it seems to work. But at a + > closer look I only get to see the incoming packets not the + > outgoing. I have tried tcpflow-0.12 which also uses libpcap and the + > same thing happens. Could someone please give me a hint on how to + > get this right? + + Search/Read the archives ?-) + + What you are seeing is expected, un-patched, behaviour for an HP-UX + system. On 11.00, you need to install the latest lancommon/DLPI + patches, and then the latest driver patch for the interface(s) in use. + At that point, a miracle happens and you should start seeing outbound + traffic. + +[That article also mentions the patch that appears below.] + +and + + http://groups.google.com/groups?selm=38AA973E.96BE7DF7%40cc.uit.no + +which says: + + Newsgroups: comp.sys.hp.hpux + Subject: Re: tcpdump only shows incoming packets + Date: 02/16/2000 + From: Harald Skotnes + + Rick Jones wrote: + + ... + + > What you are seeing is expected, un-patched, behaviour for an HP-UX + > system. On 11.00, you need to install the latest lancommon/DLPI + > patches, and then the latest driver patch for the interface(s) in + > use. At that point, a miracle happens and you should start seeing + > outbound traffic. + + Thanks a lot. I have this problem on several machines running HPUX + 10.20 and 11.00. The machines where patched up before y2k so did not + know what to think. Anyway I have now installed PHNE_19766, + PHNE_19826, PHNE_20008, PHNE_20735 on the C200 and now I can see the + outbound traffic too. Thanks again. + +(although those patches may not be the ones to install - there may be +later patches). + +And another message to tcpdump-workers@tcpdump.org, from Rick Jones: + + Date: Mon, 29 Apr 2002 15:59:55 -0700 + From: Rick Jones + To: tcpdump-workers@tcpdump.org + Subject: Re: [tcpdump-workers] I Can't Capture the Outbound Traffic + + ... + + http://itrc.hp.com/ would be one place to start in a search for the most + up-to-date patches for DLPI and the lan driver(s) used on your system (I + cannot guess because 9000/800 is too generic - one hs to use the "model" + command these days and/or an ioscan command (see manpage) to guess what + the drivers (btlan[3456], gelan, etc) might be involved in addition to + DLPI. + + Another option is to upgrade to 11i as outbound promiscuous mode support + is there in the base OS, no patches required. + +Another posting: + + http://groups.google.com/groups?selm=7d6gvn%24b3%241%40ocean.cup.hp.com + +indicates that you need to install the optional STREAMS product to do +captures on HP-UX 9.x: + + Newsgroups: comp.sys.hp.hpux + Subject: Re: tcpdump HP/UX 9.x + Date: 03/22/1999 + From: Rick Jones + + Dave Barr (barr@cis.ohio-state.edu) wrote: + : Has anyone ported tcpdump (or something similar) to HP/UX 9.x? + + I'm reasonably confident that any port of tcpdump to 9.X would require + the (then optional) STREAMS product. This would bring DLPI, which is + what one uses to access interfaces in promiscuous mode. + + I'm not sure that HP even sells the 9.X STREAMS product any longer, + since HP-UX 9.X is off the pricelist (well, maybe 9.10 for the old 68K + devices). + + Your best bet is to be up on 10.20 or better if that is at all + possible. If your hardware is supported by it, I'd go with HP-UX 11. + If you want to see the system's own outbound traffic, you'll never get + that functionality on 9.X, but it might happen at some point for 10.20 + and 11.X. + + rick jones + +(as per other messages cited here, the ability to see the system's own +outbound traffic did happen). + +Rick Jones reports that HP-UX 11i needs no patches for outbound +promiscuous mode support. + +An additional note, from Jost Martin, for HP-UX 10.20: + + Q: How do I get ethereral on HPUX to capture the _outgoing_ packets + of an interface + A: You need to get PHNE_20892,PHNE_20725 and PHCO_10947 (or + newer, this is as of 4.4.00) and its dependencies. Then you can + enable the feature as descibed below: + + Patch Name: PHNE_20892 + Patch Description: s700 10.20 PCI 100Base-T cumulative patch + To trace the outbound packets, please do the following + to turn on a global promiscuous switch before running + the promiscuous applications like snoop or tcpdump: + + adb -w /stand/vmunix /dev/mem + lanc_outbound_promisc_flag/W 1 + (adb will echo the result showing that the flag has + been changed) + $quit + (Thanks for this part to HP-support, Ratingen) + + The attached hack does this and some security-related stuff + (thanks to hildeb@www.stahl.bau.tu-bs.de (Ralf Hildebrandt) who + posted the security-part some time ago) + + <> + + (Don't switch IP-forwarding off, if you need it !) + Install the hack as /sbin/init.d/hacl_ip_stack (adjust + permissions !) and make a sequencing-symlink + /sbin/rc2.d/S350hack_ip_stack pointing to this script. + Now all this is done on every reboot. + +According to Rick Jones, the global promiscuous switch also has to be +turned on for HP-UX 11.00, but not for 11i - and, in fact, the switch +doesn't even exist on 11i. + +Here's the "hack_ip_stack" script: + +-----------------------------------Cut Here------------------------------------- +#!/sbin/sh +# +# nettune: hack kernel parms for safety + +OKAY=0 +ERROR=-1 + +# /usr/contrib/bin fuer nettune auf Pfad +PATH=/sbin:/usr/sbin:/usr/bin:/usr/contrib/bin +export PATH + + +########## +# main # +########## + +case $1 in + start_msg) + print "Tune IP-Stack for security" + exit $OKAY + ;; + + stop_msg) + print "This action is not applicable" + exit $OKAY + ;; + + stop) + exit $OKAY + ;; + + start) + ;; # fall through + + *) + print "USAGE: $0 {start_msg | stop_msg | start | stop}" >&2 + exit $ERROR + ;; + esac + +########### +# start # +########### + +# +# tcp-Sequence-Numbers nicht mehr inkrementieren sondern random +# Syn-Flood-Protection an +# ip_forwarding aus +# Source-Routing aus +# Ausgehende Packets an ethereal/tcpdump etc. + +/usr/contrib/bin/nettune -s tcp_random_seq 2 || exit $ERROR +/usr/contrib/bin/nettune -s hp_syn_protect 1 || exit $ERROR +/usr/contrib/bin/nettune -s ip_forwarding 0 || exit $ERROR +echo 'ip_block_source_routed/W1' | /usr/bin/adb -w /stand/vmunix /dev/kmem || exit $ERROR +echo 'lanc_outbound_promisc_flag/W 1' | adb -w /stand/vmunix /dev/mem || exit $ERROR + +exit $OKAY +-----------------------------------Cut Here------------------------------------- diff --git a/README.linux b/README.linux new file mode 100644 index 0000000..f92cd22 --- /dev/null +++ b/README.linux @@ -0,0 +1,108 @@ +In order for libpcap to be able to capture packets on a Linux system, +the "packet" protocol must be supported by your kernel. If it is not, +you may get error messages such as + + modprobe: can't locate module net-pf-17 + +in "/var/adm/messages", or may get messages such as + + socket: Address family not supported by protocol + +from applications using libpcap. + +You must configure the kernel with the CONFIG_PACKET option for this +protocol; the following note is from the Linux "Configure.help" file for +the 2.0[.x] kernel: + + Packet socket + CONFIG_PACKET + The Packet protocol is used by applications which communicate + directly with network devices without an intermediate network + protocol implemented in the kernel, e.g. tcpdump. If you want them + to work, choose Y. + + This driver is also available as a module called af_packet.o ( = + code which can be inserted in and removed from the running kernel + whenever you want). If you want to compile it as a module, say M + here and read Documentation/modules.txt; if you use modprobe or + kmod, you may also want to add "alias net-pf-17 af_packet" to + /etc/modules.conf. + +and the note for the 2.2[.x] kernel says: + + Packet socket + CONFIG_PACKET + The Packet protocol is used by applications which communicate + directly with network devices without an intermediate network + protocol implemented in the kernel, e.g. tcpdump. If you want them + to work, choose Y. This driver is also available as a module called + af_packet.o ( = code which can be inserted in and removed from the + running kernel whenever you want). If you want to compile it as a + module, say M here and read Documentation/modules.txt. You will + need to add 'alias net-pf-17 af_packet' to your /etc/conf.modules + file for the module version to function automatically. If unsure, + say Y. + +In addition, there is an option that, in 2.2 and later kernels, will +allow packet capture filters specified to programs such as tcpdump to be +executed in the kernel, so that packets that don't pass the filter won't +be copied from the kernel to the program, rather than having all packets +copied to the program and libpcap doing the filtering in user mode. + +Copying packets from the kernel to the program consumes a significant +amount of CPU, so filtering in the kernel can reduce the overhead of +capturing packets if a filter has been specified that discards a +significant number of packets. (If no filter is specified, it makes no +difference whether the filtering isn't performed in the kernel or isn't +performed in user mode. :-)) + +The option for this is the CONFIG_FILTER option; the "Configure.help" +file says: + + Socket filtering + CONFIG_FILTER + The Linux Socket Filter is derived from the Berkeley Packet Filter. + If you say Y here, user-space programs can attach a filter to any + socket and thereby tell the kernel that it should allow or disallow + certain types of data to get through the socket. Linux Socket + Filtering works on all socket types except TCP for now. See the text + file linux/Documentation/networking/filter.txt for more information. + If unsure, say N. + +Note that, by default, libpcap will, if libnl is present, build with it; +it uses libnl to support monitor mode on mac80211 devices. There is a +configuration option to disable building with libnl, but, if that option +is chosen, the monitor-mode APIs (as used by tcpdump's "-I" flag, and as +will probably be used by other applications in the future) won't work +properly on mac80211 devices. + +Linux's run-time linker allows shared libraries to be linked with other +shared libraries, which means that if an older version of a shared +library doesn't require routines from some other shared library, and a +later version of the shared library does require those routines, the +later version of the shared library can be linked with that other shared +library and, if it's otherwise binary-compatible with the older version, +can replace that older version without breaking applications built with +the older version, and without breaking configure scripts or the build +procedure for applications whose configure script doesn't use the +pcap-config script if they build with the shared library. (The build +procedure for applications whose configure scripts use the pcap-config +script if present will not break even if they build with the static +library.) + +Statistics: +Statistics reported by pcap are platform specific. The statistics +reported by pcap_stats on Linux are as follows: + +2.2.x +===== +ps_recv Number of packets that were accepted by the pcap filter +ps_drop Always 0, this statistic is not gatherd on this platform + +2.4.x +===== +ps_recv Number of packets that were accepted by the pcap filter +ps_drop Number of packets that had passed filtering but were not + passed on to pcap due to things like buffer shortage, etc. + This is useful because these are packets you are interested in + but won't be reported by, for example, tcpdump output. diff --git a/README.macosx b/README.macosx new file mode 100644 index 0000000..3dc9211 --- /dev/null +++ b/README.macosx @@ -0,0 +1,74 @@ +As with other systems using BPF, Mac OS X allows users with read access +to the BPF devices to capture packets with libpcap and allows users with +write access to the BPF devices to send packets with libpcap. + +On some systems that use BPF, the BPF devices live on the root file +system, and the permissions and/or ownership on those devices can be +changed to give users other than root permission to read or write those +devices. + +On newer versions of FreeBSD, the BPF devices live on devfs, and devfs +can be configured to set the permissions and/or ownership of those +devices to give users other than root permission to read or write those +devices. + +On Mac OS X, the BPF devices live on devfs, but the OS X version of +devfs is based on an older (non-default) FreeBSD devfs, and that version +of devfs cannot be configured to set the permissions and/or ownership of +those devices. + +Therefore, we supply: + + a "startup item" for older versions of Mac OS X; + + a launchd daemon for Tiger and later versions of Mac OS X; + +Both of them will change the ownership of the BPF devices so that the +"admin" group owns them, and will change the permission of the BPF +devices to rw-rw----, so that all users in the "admin" group - i.e., all +users with "Allow user to administer this computer" turned on - have +both read and write access to them. + +The startup item is in the ChmodBPF directory in the source tree. A +/Library/StartupItems directory should be created if it doesn't already +exist, and the ChmodBPF directory should be copied to the +/Library/StartupItems directory (copy the entire directory, so that +there's a /Library/StartupItems/ChmodBPF directory, containing all the +files in the source tree's ChmodBPF directory; don't copy the individual +items in that directory to /Library/StartupItems). The ChmodBPF +directory, and all files under it, must be owned by root. Installing +the files won't immediately cause the startup item to be executed; it +will be executed on the next reboot. To change the permissions before +the reboot, run + + sudo SystemStarter start ChmodBPF + +The launchd daemon is the chmod_bpf script, plus the +org.tcpdump.chmod_bpf.plist launchd plist file. chmod_bpf should be +installed in /usr/local/bin/chmod_bpf, and org.tcpdump.chmod_bpf.plist +should be installed in /Library/LaunchDaemons. chmod_bpf, and +org.tcpdump.chmod_bpf.plist, must be owned by root. Installing the +script and plist file won't immediately cause the script to be executed; +it will be executed on the next reboot. To change the permissions +before the reboot, run + + sudo /usr/local/bin/chmod_bpf + +or + + sudo launchctl load /Library/LaunchDaemons/org.tcpdump.chmod_bpf.plist + +If you want to give a particular user permission to access the BPF +devices, rather than giving all administrative users permission to +access them, you can have the ChmodBPF/ChmodBPF script change the +ownership of /dev/bpf* without changing the permissions. If you want to +give a particular user permission to read and write the BPF devices and +give the administrative users permission to read but not write the BPF +devices, you can have the script change the owner to that user, the +group to "admin", and the permissions to rw-r-----. Other possibilities +are left as an exercise for the reader. + +(NOTE: due to a bug in Snow Leopard, if you change the permissions not +to grant write permission to everybody who should be allowed to capture +traffic, non-root users who cannot open the BPF devices for writing will +not be able to capture outgoing packets.) diff --git a/README.septel b/README.septel new file mode 100644 index 0000000..fbc88df --- /dev/null +++ b/README.septel @@ -0,0 +1,50 @@ +The following instructions apply if you have a Linux platform and want +libpcap to support the Septel range of passive network monitoring cards +from Intel (http://www.intel.com) + +1) Install and build the Septel software distribution by following the +instructions supplied with that package. + +2) Configure libcap. To allow the 'configure' script to locate the Septel +software distribution use the '--with-septel' option: + + ./configure --with-septel=DIR + +where DIR is the root of the Septel software distribution, for example +/var/src/septel. + +By default (if you write only ./configure --with-septel) it takes +./../septel as argument for DIR. + +If the Septel software is correctly detected 'configure' will +report: + + checking whether we have Septel API... yes + +If 'configure' reports that there is no Septel API, the directory may have been +incorrectly specified or the Septel software was not built before configuring +libpcap. + +See also the libpcap INSTALL.txt file for further libpcap configuration +options. + +Building libpcap at this stage will include support for both the native +packet capture stream and for capturing from Septel cards. To build +libpcap with only Septel support specify the capture type as 'septel' +when configuring libpcap: + + ./configure --with-septel=DIR --with-pcap=septel + +Applications built with libpcap configured in this way will only detect Septel +cards and will not capture from the native OS packet stream. + +Note: As mentioned in pcap-septel.c we should first edit the system.txt +file to change the user part example (UPE) module id to 0xdd instead of +0x2d for technical reason. So this change in system.txt is crutial and +things will go wrong if it's not done. System.txt along with config.txt +are configuration files that are edited by the user before running the +gctload program that uses these files for initialising modules and +configuring parameters. + +---------------------------------------------------------------------- +for more information please contact me : gil_hoyek@hotmail.com diff --git a/README.sita b/README.sita new file mode 100644 index 0000000..ee7a426 --- /dev/null +++ b/README.sita @@ -0,0 +1,64 @@ +The following instructions apply if you have a Linux platform and want +libpcap to support the 'ACN' WAN/LAN router product from from SITA +(http://www.sita.aero) + +This might also work on non-Linux Unix-compatible platforms, but that +has not been tested. + +See also the libpcap INSTALL.txt file for further libpcap configuration +options. + +These additions/extensions have been made to PCAP to allow it to +capture packets from a SITA ACN device (and potentially others). + +To enable its support you need to ensure that the distribution has +a correct configure.in file; that can be created if neccessay by +using the normal autoconf procedure of: + +aclocal +autoconf +autoheader +automake + +Then run configure with the 'sita' option: + +./configure --with-sita + +Applications built with libpcap configured in this way will only detect SITA +ACN interfaces and will not capture from the native OS packet stream. + +The SITA extension provides a remote datascope operation for capturing +both WAN and LAN protocols. It effectively splits the operation of +PCAP into two halves. The top layer performs the majority of the +work, but interfaces via a TCP session to remote agents that +provide the lower layer functionality of actual sniffing and +filtering. More detailed information regarding the functions and +inter-device protocol and naming conventions are described in detail +in 'pcap-sita.html'. + +pcap_findalldevs() reads the local system's /etc/hosts file looking +for host names that match the format of IOP type devices. ie. aaa_I_x_y +and then queries each associated IP address for a list of its WAN and +LAN devices. The local system the aggregates the lists obtained from +each IOP, sorts it, and provides it (to Wireshark et.al) as the +list of monitorable interfaces. + +Once a valid interface has been selected, pcap_open() is called +which opens a TCP session (to a well known port) on the target IOP +and tells it to start monitoring. + +All captured packets are then forwarded across that TCP session +back to the local 'top layer' for forwarding to the actual +sniffing program (wireshark...) + +Note that the DLT_SITA link-layer type includes a proprietary header +that is documented as part of the SITA dissector of Wireshark and is +also described in 'pcap-sita.html' for posterity sake. + +That header provides: +- Packet direction (in/out) (1 octet) +- Link layer hardware signal status (1 octet) +- Transmit/Receive error status (2 octets) +- Encapsulated WAN protocol ID (1 octet) + + diff --git a/README.tru64 b/README.tru64 new file mode 100644 index 0000000..7fe1ef0 --- /dev/null +++ b/README.tru64 @@ -0,0 +1,49 @@ +The following instructions are applicable to Tru64 UNIX +(formerly Digital UNIX (formerly DEC OSF/1)) version 4.0, and +probably to later versions as well; at least some options apply to +Digital UNIX 3.2 - perhaps all do. + +In order to use kernel packet filtering on this system, you have +to configure it in such a way: + +Kernel configuration +-------------------- + +The packet filtering kernel option must be enabled at kernel +installation. If it was not the case, you can rebuild the kernel with +"doconfig -c" after adding the following line in the kernel +configuration file (/sys/conf/): + + option PACKETFILTER + +or use "doconfig" without any arguments to add the packet filter driver +option via the kernel option menu (see the system administration +documentation for information on how to do this). + +Device configuration +-------------------- + +Devices used for packet filtering must be created thanks to +the following command (executed in the /dev directory): + + ./MAKEDEV pfilt + +Interface configuration +----------------------- + +In order to capture all packets on a network, you may want to allow +applications to put the interface on that network into "local copy" +mode, so that tcpdump can see packets sent by the host on which it's +running as well as packets received by that host, and to put the +interface into "promiscuous" mode, so that tcpdump can see packets on +the network segment not sent to the host on which it's running, by using +the pfconfig(1) command: + + pfconfig +c +p + +or allow application to put any interface into "local copy" or +"promiscuous" mode by using the command: + + pfconfig +c +p -a + +Note: all instructions given require root privileges. diff --git a/SUNOS4/nit_if.o.sparc b/SUNOS4/nit_if.o.sparc new file mode 100644 index 0000000..d05073e Binary files /dev/null and b/SUNOS4/nit_if.o.sparc differ diff --git a/SUNOS4/nit_if.o.sun3 b/SUNOS4/nit_if.o.sun3 new file mode 100644 index 0000000..c393fc6 Binary files /dev/null and b/SUNOS4/nit_if.o.sun3 differ diff --git a/SUNOS4/nit_if.o.sun4c.4.0.3c b/SUNOS4/nit_if.o.sun4c.4.0.3c new file mode 100644 index 0000000..ef01039 Binary files /dev/null and b/SUNOS4/nit_if.o.sun4c.4.0.3c differ diff --git a/TODO b/TODO new file mode 100644 index 0000000..73325e1 --- /dev/null +++ b/TODO @@ -0,0 +1,35 @@ + TODO list for libpcap +======================= + +Important stuff (to be done before the next release) +--------------- + +General + +- configure should not be in Git. Most open source projects have an + autogen.sh script to run autoconf etc. after checkout. I think we + should stick to the standard. + +- The source files should be better documented. There is no official + design guideline for what is done where. There should be a common coding + style (okay, you can guess that by looking at the code) and a guide for + what needs to be documented. + +Less urgent items +----------------- + +- Better documentation and cleanup of the interface. I am seeing a few + problems at the first glance which needs fixing: + + pcap_lookupnet makes little to no sense with protocols != IPv4 + + not very well suited for interactive programs (think ethereal). There + should be a way for the application to get a file descriptor which it + has to monitor and a callback in pcap which has to be called on + activity (XXX - "pcap_fileno()" handles the first part, although + "select()" and "poll()" don't work on BPF devices on most BSDs, and + you can call "pcap_dispatch()" as the dispatch routine after putting + the descriptor into non-blocking mode) + + too many functions. There are a lot of functions for everything which + violates the KISS principle. Why do we need pcap_strerror, pcap_perror + and pcap_geterr? + + the manpage has a brief description of each function but where is the + big picture? Seems like you need to buy UNP for that... diff --git a/VERSION b/VERSION new file mode 100644 index 0000000..f0bb29e --- /dev/null +++ b/VERSION @@ -0,0 +1 @@ +1.3.0 diff --git a/Win32/Include/Gnuc.h b/Win32/Include/Gnuc.h new file mode 100644 index 0000000..0bf4b73 --- /dev/null +++ b/Win32/Include/Gnuc.h @@ -0,0 +1,46 @@ +/* @(#) $Header: /tcpdump/master/libpcap/Win32/Include/Gnuc.h,v 1.1 2002-08-01 08:33:05 risso Exp $ (LBL) */ + +/* Define __P() macro, if necessary */ + +#ifndef __P +#if __STDC__ +#define __P(protos) protos +#else +#define __P(protos) () +#endif +#endif + +/* inline foo */ +#ifndef __cplusplus +#ifdef __GNUC__ +#define inline __inline +#else +#define inline +#endif +#endif + +/* + * Handle new and old "dead" routine prototypes + * + * For example: + * + * __dead void foo(void) __attribute__((volatile)); + * + */ +#ifdef __GNUC__ +#ifndef __dead +#define __dead volatile +#endif +#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) +#ifndef __attribute__ +#define __attribute__(args) +#endif +#endif +#else +#ifndef __dead +#define __dead +#endif +#ifndef __attribute__ +#define __attribute__(args) +#endif +#endif diff --git a/Win32/Include/addrinfo.h b/Win32/Include/addrinfo.h new file mode 100644 index 0000000..8cb2e65 --- /dev/null +++ b/Win32/Include/addrinfo.h @@ -0,0 +1,146 @@ +/* + * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* $Id: addrinfo.h,v 1.1 2002-08-01 08:33:05 risso Exp $ */ + +#ifndef HAVE_ADDRINFO + +/* + * Error return codes from getaddrinfo() + */ +#define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ +#define EAI_AGAIN 2 /* temporary failure in name resolution */ +#define EAI_BADFLAGS 3 /* invalid value for ai_flags */ +#define EAI_FAIL 4 /* non-recoverable failure in name resolution */ +#define EAI_FAMILY 5 /* ai_family not supported */ +#define EAI_MEMORY 6 /* memory allocation failure */ +#define EAI_NODATA 7 /* no address associated with hostname */ +#define EAI_NONAME 8 /* hostname nor servname provided, or not known */ +#define EAI_SERVICE 9 /* servname not supported for ai_socktype */ +#define EAI_SOCKTYPE 10 /* ai_socktype not supported */ +#define EAI_SYSTEM 11 /* system error returned in errno */ +#define EAI_BADHINTS 12 +#define EAI_PROTOCOL 13 +#define EAI_MAX 14 + +/* internal error */ +#define NETDB_INTERNAL -1 /* see errno */ + +/* + * Flag values for getaddrinfo() + */ +#define AI_PASSIVE 0x00000001 /* get address to use bind() */ +#define AI_CANONNAME 0x00000002 /* fill ai_canonname */ +#define AI_NUMERICHOST 0x00000004 /* prevent name resolution */ +/* valid flags for addrinfo */ +#define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST) + +#define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ +#define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ +#define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ +#define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ +/* special recommended flags for getipnodebyname */ +#define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) + +struct addrinfo { + int ai_flags; /* AI_PASSIVE, AI_CANONNAME */ + int ai_family; /* PF_xxx */ + int ai_socktype; /* SOCK_xxx */ + int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ + size_t ai_addrlen; /* length of ai_addr */ + char *ai_canonname; /* canonical name for hostname */ + struct sockaddr *ai_addr; /* binary address */ + struct addrinfo *ai_next; /* next structure in linked list */ +}; + +extern void freeaddrinfo (struct addrinfo *); +extern void freehostent (struct hostent *); +extern char *gai_strerror (int); +extern int getaddrinfo (const char *, const char *, + const struct addrinfo *, struct addrinfo **); +extern int getnameinfo (const struct sockaddr *, size_t, char *, + size_t, char *, size_t, int); +extern struct hostent *getipnodebyaddr (const void *, size_t, int, int *); +extern struct hostent *getipnodebyname (const char *, int, int, int *); +extern int inet_pton (int, const char *, void *); +extern const char *inet_ntop (int, const void *, char *, size_t); +#else + +#ifndef EAI_BADHINTS +#define EAI_BADHINTS 12 +#endif + +#ifndef EAI_PROTOCOL +#define EAI_PROTOCOL 13 +#endif + +#ifndef EAI_MAX +#define EAI_MAX 14 +#endif + +#ifndef NETDB_INTERNAL +#define NETDB_INTERNAL -1 /* see errno */ +#endif + +#ifndef AI_MASK +/* valid flags for addrinfo */ +#define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST) +#endif + +#endif /* HAVE_ADDRINFO */ + +/* + * Constants for getnameinfo() + */ +#ifndef NI_MAXHOST +#define NI_MAXHOST 1025 +#endif +#ifndef NI_MAXSERV +#define NI_MAXSERV 32 +#endif + +/* + * Flag values for getnameinfo() + */ +#ifndef NI_NOFQDN +#define NI_NOFQDN 0x00000001 +#endif +#ifndef NI_NUMERICHOST +#define NI_NUMERICHOST 0x00000002 +#endif +#ifndef NI_NAMEREQD +#define NI_NAMEREQD 0x00000004 +#endif +#ifndef NI_NUMERICSERV +#define NI_NUMERICSERV 0x00000008 +#endif +#ifndef NI_DGRAM +#define NI_DGRAM 0x00000010 +#endif + diff --git a/Win32/Include/arpa/nameser.h b/Win32/Include/arpa/nameser.h new file mode 100644 index 0000000..18f185c --- /dev/null +++ b/Win32/Include/arpa/nameser.h @@ -0,0 +1,349 @@ +/* + * ++Copyright++ 1983, 1989, 1993 + * - + * Copyright (c) 1983, 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * - + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * - + * --Copyright-- + */ + +/* + * @(#)nameser.h 8.1 (Berkeley) 6/2/93 + * nameser.h,v 1.2 1995/05/06 14:23:54 hjl Exp + */ + +#ifndef _NAMESER_H_ +#define _NAMESER_H_ + +#ifndef WIN32 +#include +#if (!defined(BSD)) || (BSD < 199306) +# include +#else +# include +#endif +#include +#else +#include +#define __LITTLE_ENDIAN 1 +#define __BYTE_ORDER __LITTLE_ENDIAN +#endif + +/* + * revision information. this is the release date in YYYYMMDD format. + * it can change every day so the right thing to do with it is use it + * in preprocessor commands such as "#if (__BIND > 19931104)". do not + * compare for equality; rather, use it to determine whether your resolver + * is new enough to contain a certain feature. + */ + +#define __BIND 19940417 /* interface version stamp */ + +/* + * Define constants based on rfc883 + */ +#define PACKETSZ 512 /* maximum packet size */ +#define MAXDNAME 256 /* maximum domain name */ +#define MAXCDNAME 255 /* maximum compressed domain name */ +#define MAXLABEL 63 /* maximum length of domain label */ +#define HFIXEDSZ 12 /* #/bytes of fixed data in header */ +#define QFIXEDSZ 4 /* #/bytes of fixed data in query */ +#define RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ +#define INT32SZ 4 /* for systems without 32-bit ints */ +#define INT16SZ 2 /* for systems without 16-bit ints */ +#define INADDRSZ 4 /* for sizeof(struct inaddr) != 4 */ + +/* + * Internet nameserver port number + */ +#define NAMESERVER_PORT 53 + +/* + * Currently defined opcodes + */ +#define QUERY 0x0 /* standard query */ +#define IQUERY 0x1 /* inverse query */ +#define STATUS 0x2 /* nameserver status query */ +/*#define xxx 0x3 *//* 0x3 reserved */ +#define NS_NOTIFY_OP 0x4 /* notify secondary of SOA change */ +#ifdef ALLOW_UPDATES + /* non standard - supports ALLOW_UPDATES stuff from Mike Schwartz */ +# define UPDATEA 0x9 /* add resource record */ +# define UPDATED 0xa /* delete a specific resource record */ +# define UPDATEDA 0xb /* delete all named resource record */ +# define UPDATEM 0xc /* modify a specific resource record */ +# define UPDATEMA 0xd /* modify all named resource record */ +# define ZONEINIT 0xe /* initial zone transfer */ +# define ZONEREF 0xf /* incremental zone referesh */ +#endif + +/* + * Currently defined response codes + */ +#ifdef HAVE_ADDRINFO +#define NOERROR 0 /* no error */ +#endif /* HAVE_ADDRINFO */ +#define FORMERR 1 /* format error */ +#define SERVFAIL 2 /* server failure */ +#define NXDOMAIN 3 /* non existent domain */ +#define NOTIMP 4 /* not implemented */ +#define REFUSED 5 /* query refused */ +#ifdef ALLOW_UPDATES + /* non standard */ +# define NOCHANGE 0xf /* update failed to change db */ +#endif + +/* + * Type values for resources and queries + */ +#define T_A 1 /* host address */ +#define T_NS 2 /* authoritative server */ +#define T_MD 3 /* mail destination */ +#define T_MF 4 /* mail forwarder */ +#define T_CNAME 5 /* canonical name */ +#define T_SOA 6 /* start of authority zone */ +#define T_MB 7 /* mailbox domain name */ +#define T_MG 8 /* mail group member */ +#define T_MR 9 /* mail rename name */ +#define T_NULL 10 /* null resource record */ +#define T_WKS 11 /* well known service */ +#define T_PTR 12 /* domain name pointer */ +#define T_HINFO 13 /* host information */ +#define T_MINFO 14 /* mailbox information */ +#define T_MX 15 /* mail routing information */ +#define T_TXT 16 /* text strings */ +#define T_RP 17 /* responsible person */ +#define T_AFSDB 18 /* AFS cell database */ +#define T_X25 19 /* X_25 calling address */ +#define T_ISDN 20 /* ISDN calling address */ +#define T_RT 21 /* router */ +#define T_NSAP 22 /* NSAP address */ +#define T_NSAP_PTR 23 /* reverse NSAP lookup (deprecated) */ +#define T_SIG 24 /* security signature */ +#define T_KEY 25 /* security key */ +#define T_PX 26 /* X.400 mail mapping */ +#define T_GPOS 27 /* geographical position (withdrawn) */ +#define T_AAAA 28 /* IP6 Address */ +#define T_LOC 29 /* Location Information */ + /* non standard */ +#define T_UINFO 100 /* user (finger) information */ +#define T_UID 101 /* user ID */ +#define T_GID 102 /* group ID */ +#define T_UNSPEC 103 /* Unspecified format (binary data) */ + /* Query type values which do not appear in resource records */ +#define T_AXFR 252 /* transfer zone of authority */ +#define T_MAILB 253 /* transfer mailbox records */ +#define T_MAILA 254 /* transfer mail agent records */ +#define T_ANY 255 /* wildcard match */ + +/* + * Values for class field + */ + +#define C_IN 1 /* the arpa internet */ +#define C_CHAOS 3 /* for chaos net (MIT) */ +#define C_HS 4 /* for Hesiod name server (MIT) (XXX) */ + /* Query class values which do not appear in resource records */ +#define C_ANY 255 /* wildcard match */ + +/* + * Status return codes for T_UNSPEC conversion routines + */ +#define CONV_SUCCESS 0 +#define CONV_OVERFLOW (-1) +#define CONV_BADFMT (-2) +#define CONV_BADCKSUM (-3) +#define CONV_BADBUFLEN (-4) + +#ifndef __BYTE_ORDER +#if (BSD >= 199103) +# include +#else +#ifdef linux +# include +#else +#define __LITTLE_ENDIAN 1234 /* least-significant byte first (vax, pc) */ +#define __BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */ +#define __PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp)*/ + +#if defined(vax) || defined(ns32000) || defined(sun386) || defined(i386) || \ + defined(MIPSEL) || defined(_MIPSEL) || defined(BIT_ZERO_ON_RIGHT) || \ + defined(__alpha__) || defined(__alpha) +#define __BYTE_ORDER __LITTLE_ENDIAN +#endif + +#if defined(sel) || defined(pyr) || defined(mc68000) || defined(sparc) || \ + defined(is68k) || defined(tahoe) || defined(ibm032) || defined(ibm370) || \ + defined(MIPSEB) || defined(_MIPSEB) || defined(_IBMR2) || defined(DGUX) ||\ + defined(apollo) || defined(__convex__) || defined(_CRAY) || \ + defined(__hppa) || defined(__hp9000) || \ + defined(__hp9000s300) || defined(__hp9000s700) || \ + defined (BIT_ZERO_ON_LEFT) || defined(m68k) +#define __BYTE_ORDER __BIG_ENDIAN +#endif +#endif /* linux */ +#endif /* BSD */ +#endif /* __BYTE_ORDER */ + +#if !defined(__BYTE_ORDER) || \ + (__BYTE_ORDER != __BIG_ENDIAN && __BYTE_ORDER != __LITTLE_ENDIAN && \ + __BYTE_ORDER != __PDP_ENDIAN) + /* you must determine what the correct bit order is for + * your compiler - the next line is an intentional error + * which will force your compiles to bomb until you fix + * the above macros. + */ + error "Undefined or invalid __BYTE_ORDER"; +#endif + +/* + * Structure for query header. The order of the fields is machine- and + * compiler-dependent, depending on the byte/bit order and the layout + * of bit fields. We use bit fields only in int variables, as this + * is all ANSI requires. This requires a somewhat confusing rearrangement. + */ + +typedef struct { + unsigned id :16; /* query identification number */ +#if __BYTE_ORDER == __BIG_ENDIAN + /* fields in third byte */ + unsigned qr: 1; /* response flag */ + unsigned opcode: 4; /* purpose of message */ + unsigned aa: 1; /* authoritive answer */ + unsigned tc: 1; /* truncated message */ + unsigned rd: 1; /* recursion desired */ + /* fields in fourth byte */ + unsigned ra: 1; /* recursion available */ + unsigned pr: 1; /* primary server req'd (!standard) */ + unsigned unused :2; /* unused bits (MBZ as of 4.9.3a3) */ + unsigned rcode :4; /* response code */ +#endif +#if __BYTE_ORDER == __LITTLE_ENDIAN || __BYTE_ORDER == __PDP_ENDIAN + /* fields in third byte */ + unsigned rd :1; /* recursion desired */ + unsigned tc :1; /* truncated message */ + unsigned aa :1; /* authoritive answer */ + unsigned opcode :4; /* purpose of message */ + unsigned qr :1; /* response flag */ + /* fields in fourth byte */ + unsigned rcode :4; /* response code */ + unsigned unused :2; /* unused bits (MBZ as of 4.9.3a3) */ + unsigned pr :1; /* primary server req'd (!standard) */ + unsigned ra :1; /* recursion available */ +#endif + /* remaining bytes */ + unsigned qdcount :16; /* number of question entries */ + unsigned ancount :16; /* number of answer entries */ + unsigned nscount :16; /* number of authority entries */ + unsigned arcount :16; /* number of resource entries */ +} HEADER; + +/* + * Defines for handling compressed domain names + */ +#define INDIR_MASK 0xc0 + +/* + * Structure for passing resource records around. + */ +struct rrec { + int16_t r_zone; /* zone number */ + int16_t r_class; /* class number */ + int16_t r_type; /* type number */ + u_int32_t r_ttl; /* time to live */ + int r_size; /* size of data area */ + char *r_data; /* pointer to data */ +}; + +//extern u_int16_t _getshort __P((const u_char *)); +//extern u_int32_t _getlong __P((const u_char *)); + +/* + * Inline versions of get/put short/long. Pointer is advanced. + * + * These macros demonstrate the property of C whereby it can be + * portable or it can be elegant but rarely both. + */ +#define GETSHORT(s, cp) { \ + register u_char *t_cp = (u_char *)(cp); \ + (s) = ((u_int16_t)t_cp[0] << 8) \ + | ((u_int16_t)t_cp[1]) \ + ; \ + (cp) += INT16SZ; \ +} + +#define GETLONG(l, cp) { \ + register u_char *t_cp = (u_char *)(cp); \ + (l) = ((u_int32_t)t_cp[0] << 24) \ + | ((u_int32_t)t_cp[1] << 16) \ + | ((u_int32_t)t_cp[2] << 8) \ + | ((u_int32_t)t_cp[3]) \ + ; \ + (cp) += INT32SZ; \ +} + +#define PUTSHORT(s, cp) { \ + register u_int16_t t_s = (u_int16_t)(s); \ + register u_char *t_cp = (u_char *)(cp); \ + *t_cp++ = t_s >> 8; \ + *t_cp = t_s; \ + (cp) += INT16SZ; \ +} + +#define PUTLONG(l, cp) { \ + register u_int32_t t_l = (u_int32_t)(l); \ + register u_char *t_cp = (u_char *)(cp); \ + *t_cp++ = t_l >> 24; \ + *t_cp++ = t_l >> 16; \ + *t_cp++ = t_l >> 8; \ + *t_cp = t_l; \ + (cp) += INT32SZ; \ +} + +#endif /* !_NAMESER_H_ */ diff --git a/Win32/Include/bittypes.h b/Win32/Include/bittypes.h new file mode 100644 index 0000000..7c0cbde --- /dev/null +++ b/Win32/Include/bittypes.h @@ -0,0 +1,89 @@ +/* + * Copyright (C) 1999 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +#ifndef _BITTYPES_H +#define _BITTYPES_H + +#ifndef HAVE_U_INT8_T +typedef unsigned char u_int8_t; +typedef signed char int8_t; +#endif /* HAVE_U_INT8_T */ + +#ifndef HAVE_U_INT16_T +typedef unsigned short u_int16_t; +typedef signed short int16_t; +#endif /* HAVE_U_INT16_T */ + +#ifndef HAVE_U_INT32_T +typedef unsigned int u_int32_t; +typedef signed int int32_t; +#endif /* HAVE_U_INT32_T */ + +#ifndef HAVE_U_INT64_T +#ifdef _MSC_EXTENSIONS +typedef unsigned _int64 u_int64_t; +typedef _int64 int64_t; +#else /* _MSC_EXTENSIONS */ +typedef unsigned long long u_int64_t; +typedef long long int64_t; +#endif /* _MSC_EXTENSIONS */ +#endif /* HAVE_U_INT64_T */ + +#ifndef PRId64 +#ifdef _MSC_EXTENSIONS +#define PRId64 "I64d" +#else /* _MSC_EXTENSIONS */ +#define PRId64 "lld" +#endif /* _MSC_EXTENSIONS */ +#endif /* PRId64 */ + +#ifndef PRIo64 +#ifdef _MSC_EXTENSIONS +#define PRIo64 "I64o" +#else /* _MSC_EXTENSIONS */ +#define PRIo64 "llo" +#endif /* _MSC_EXTENSIONS */ +#endif /* PRIo64 */ + +#ifndef PRIx64 +#ifdef _MSC_EXTENSIONS +#define PRIx64 "I64x" +#else /* _MSC_EXTENSIONS */ +#define PRIx64 "llx" +#endif /* _MSC_EXTENSIONS */ +#endif /* PRIx64 */ + +#ifndef PRIu64 +#ifdef _MSC_EXTENSIONS +#define PRIu64 "I64u" +#else /* _MSC_EXTENSIONS */ +#define PRIu64 "llu" +#endif /* _MSC_EXTENSIONS */ +#endif /* PRIu64 */ + +#endif /* _BITTYPES_H */ diff --git a/Win32/Include/cdecl_ext.h b/Win32/Include/cdecl_ext.h new file mode 100644 index 0000000..9591db2 --- /dev/null +++ b/Win32/Include/cdecl_ext.h @@ -0,0 +1,37 @@ +/* + * Copyright (C) 1999 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +#ifndef HAVE_PORTABLE_PROTOTYPE + +#if defined(__STDC__) || defined(__cplusplus) +#define __P(protos) protos /* full-blown ANSI C */ +#else +#define __P(protos) () /* traditional C preprocessor */ +#endif + +#endif /* !HAVE_PORTABLE_PROTOTYPE */ diff --git a/Win32/Include/inetprivate.h b/Win32/Include/inetprivate.h new file mode 100644 index 0000000..e25ed3d --- /dev/null +++ b/Win32/Include/inetprivate.h @@ -0,0 +1,67 @@ +/* + * Copyright (c) 1999 - 2003 + * NetGroup, Politecnico di Torino (Italy) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Politecnico di Torino nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +extern void _sethtent(int f); +extern void _endhtent(void); +extern struct hostent *_gethtent(void); +extern struct hostent *_gethtbyname(const char *name); +extern struct hostent *_gethtbyaddr(const char *addr, int len, + int type); +extern int _validuser(FILE *hostf, const char *rhost, + const char *luser, const char *ruser, int baselen); +extern int _checkhost(const char *rhost, const char *lhost, int len); +#if 0 +extern void putlong(u_long l, u_char *msgp); +extern void putshort(u_short l, u_char *msgp); +extern u_int32_t _getlong(register const u_char *msgp); +extern u_int16_t _getshort(register const u_char *msgp); +extern void p_query(char *msg); +extern void fp_query(char *msg, FILE *file); +extern char *p_cdname(char *cp, char *msg, FILE *file); +extern char *p_rr(char *cp, char *msg, FILE *file); +extern char *p_type(int type); +extern char * p_class(int class); +extern char *p_time(u_long value); +#endif +extern char * hostalias(const char *name); +extern void sethostfile(char *name); +extern void _res_close (void); +extern void ruserpass(const char *host, char **aname, char **apass); diff --git a/Win32/Include/ip6_misc.h b/Win32/Include/ip6_misc.h new file mode 100644 index 0000000..562fa61 --- /dev/null +++ b/Win32/Include/ip6_misc.h @@ -0,0 +1,163 @@ +/* + * Copyright (c) 1993, 1994, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * @(#) $Header: /tcpdump/master/libpcap/Win32/Include/ip6_misc.h,v 1.5 2006-01-22 18:02:18 gianluca Exp $ (LBL) + */ + +/* + * This file contains a collage of declarations for IPv6 from FreeBSD not present in Windows + */ + +#include + +#include + +#ifndef __MINGW32__ +#define IN_MULTICAST(a) IN_CLASSD(a) +#endif + +#define IN_EXPERIMENTAL(a) ((((u_int32_t) (a)) & 0xf0000000) == 0xf0000000) + +#define IN_LOOPBACKNET 127 + +#if defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF) +/* IPv6 address */ +struct in6_addr + { + union + { + u_int8_t u6_addr8[16]; + u_int16_t u6_addr16[8]; + u_int32_t u6_addr32[4]; + } in6_u; +#define s6_addr in6_u.u6_addr8 +#define s6_addr16 in6_u.u6_addr16 +#define s6_addr32 in6_u.u6_addr32 +#define s6_addr64 in6_u.u6_addr64 + }; + +#define IN6ADDR_ANY_INIT { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } +#define IN6ADDR_LOOPBACK_INIT { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } +#endif /* __MINGW32__ */ + + +#if (defined _MSC_VER) || (defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF)) +typedef unsigned short sa_family_t; +#endif + + +#if defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF) + +#define __SOCKADDR_COMMON(sa_prefix) \ + sa_family_t sa_prefix##family + +/* Ditto, for IPv6. */ +struct sockaddr_in6 + { + __SOCKADDR_COMMON (sin6_); + u_int16_t sin6_port; /* Transport layer port # */ + u_int32_t sin6_flowinfo; /* IPv6 flow information */ + struct in6_addr sin6_addr; /* IPv6 address */ + }; + +#define IN6_IS_ADDR_V4MAPPED(a) \ + ((((u_int32_t *) (a))[0] == 0) && (((u_int32_t *) (a))[1] == 0) && \ + (((u_int32_t *) (a))[2] == htonl (0xffff))) + +#define IN6_IS_ADDR_MULTICAST(a) (((u_int8_t *) (a))[0] == 0xff) + +#define IN6_IS_ADDR_LINKLOCAL(a) \ + ((((u_int32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfe800000)) + +#define IN6_IS_ADDR_LOOPBACK(a) \ + (((u_int32_t *) (a))[0] == 0 && ((u_int32_t *) (a))[1] == 0 && \ + ((u_int32_t *) (a))[2] == 0 && ((u_int32_t *) (a))[3] == htonl (1)) +#endif /* __MINGW32__ */ + +#define ip6_vfc ip6_ctlun.ip6_un2_vfc +#define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow +#define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen +#define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt +#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim +#define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim + +#define nd_rd_type nd_rd_hdr.icmp6_type +#define nd_rd_code nd_rd_hdr.icmp6_code +#define nd_rd_cksum nd_rd_hdr.icmp6_cksum +#define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] + +/* + * IPV6 extension headers + */ +#define IPPROTO_HOPOPTS 0 /* IPv6 hop-by-hop options */ +#define IPPROTO_IPV6 41 /* IPv6 header. */ +#define IPPROTO_ROUTING 43 /* IPv6 routing header */ +#define IPPROTO_FRAGMENT 44 /* IPv6 fragmentation header */ +#define IPPROTO_ESP 50 /* encapsulating security payload */ +#define IPPROTO_AH 51 /* authentication header */ +#define IPPROTO_ICMPV6 58 /* ICMPv6 */ +#define IPPROTO_NONE 59 /* IPv6 no next header */ +#define IPPROTO_DSTOPTS 60 /* IPv6 destination options */ +#define IPPROTO_PIM 103 /* Protocol Independent Multicast. */ + +#define IPV6_RTHDR_TYPE_0 0 + +/* Option types and related macros */ +#define IP6OPT_PAD1 0x00 /* 00 0 00000 */ +#define IP6OPT_PADN 0x01 /* 00 0 00001 */ +#define IP6OPT_JUMBO 0xC2 /* 11 0 00010 = 194 */ +#define IP6OPT_JUMBO_LEN 6 +#define IP6OPT_ROUTER_ALERT 0x05 /* 00 0 00101 */ + +#define IP6OPT_RTALERT_LEN 4 +#define IP6OPT_RTALERT_MLD 0 /* Datagram contains an MLD message */ +#define IP6OPT_RTALERT_RSVP 1 /* Datagram contains an RSVP message */ +#define IP6OPT_RTALERT_ACTNET 2 /* contains an Active Networks msg */ +#define IP6OPT_MINLEN 2 + +#define IP6OPT_BINDING_UPDATE 0xc6 /* 11 0 00110 */ +#define IP6OPT_BINDING_ACK 0x07 /* 00 0 00111 */ +#define IP6OPT_BINDING_REQ 0x08 /* 00 0 01000 */ +#define IP6OPT_HOME_ADDRESS 0xc9 /* 11 0 01001 */ +#define IP6OPT_EID 0x8a /* 10 0 01010 */ + +#define IP6OPT_TYPE(o) ((o) & 0xC0) +#define IP6OPT_TYPE_SKIP 0x00 +#define IP6OPT_TYPE_DISCARD 0x40 +#define IP6OPT_TYPE_FORCEICMP 0x80 +#define IP6OPT_TYPE_ICMP 0xC0 + +#define IP6OPT_MUTABLE 0x20 + + +#if defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF) +#ifndef EAI_ADDRFAMILY +struct addrinfo { + int ai_flags; /* AI_PASSIVE, AI_CANONNAME */ + int ai_family; /* PF_xxx */ + int ai_socktype; /* SOCK_xxx */ + int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ + size_t ai_addrlen; /* length of ai_addr */ + char *ai_canonname; /* canonical name for hostname */ + struct sockaddr *ai_addr; /* binary address */ + struct addrinfo *ai_next; /* next structure in linked list */ +}; +#endif +#endif /* __MINGW32__ */ diff --git a/Win32/Include/net/if.h b/Win32/Include/net/if.h new file mode 100644 index 0000000..bf926b6 --- /dev/null +++ b/Win32/Include/net/if.h @@ -0,0 +1,230 @@ +/* + * Copyright (c) 1982, 1986, 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)if.h 8.1 (Berkeley) 6/10/93 + * $FreeBSD: src/sys/net/if.h,v 1.49.2.1 1999/08/29 16:28:15 peter Exp $ + */ + +#ifndef _NET_IF_H_ +#define _NET_IF_H_ + +/* + * does not depend on on most other systems. This + * helps userland compatability. (struct timeval ifi_lastchange) + */ +#ifndef KERNEL +#include +#endif + +/* + * Structure describing information about an interface + * which may be of interest to management entities. + */ +struct if_data { + /* generic interface information */ + u_char ifi_type; /* ethernet, tokenring, etc */ + u_char ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */ + u_char ifi_addrlen; /* media address length */ + u_char ifi_hdrlen; /* media header length */ + u_char ifi_recvquota; /* polling quota for receive intrs */ + u_char ifi_xmitquota; /* polling quota for xmit intrs */ + u_long ifi_mtu; /* maximum transmission unit */ + u_long ifi_metric; /* routing metric (external only) */ + u_long ifi_baudrate; /* linespeed */ + /* volatile statistics */ + u_long ifi_ipackets; /* packets received on interface */ + u_long ifi_ierrors; /* input errors on interface */ + u_long ifi_opackets; /* packets sent on interface */ + u_long ifi_oerrors; /* output errors on interface */ + u_long ifi_collisions; /* collisions on csma interfaces */ + u_long ifi_ibytes; /* total number of octets received */ + u_long ifi_obytes; /* total number of octets sent */ + u_long ifi_imcasts; /* packets received via multicast */ + u_long ifi_omcasts; /* packets sent via multicast */ + u_long ifi_iqdrops; /* dropped on input, this interface */ + u_long ifi_noproto; /* destined for unsupported protocol */ + u_long ifi_recvtiming; /* usec spent receiving when timing */ + u_long ifi_xmittiming; /* usec spent xmitting when timing */ + struct timeval ifi_lastchange; /* time of last administrative change */ +}; + +/* ws2tcpip.h has interface flags: IFF_* */ +#if 0 +#define IFF_UP 0x1 /* interface is up */ +#define IFF_BROADCAST 0x2 /* broadcast address valid */ +#define IFF_DEBUG 0x4 /* turn on debugging */ +#define IFF_LOOPBACK 0x8 /* is a loopback net */ +#define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ +/*#define IFF_NOTRAILERS 0x20 * obsolete: avoid use of trailers */ +#define IFF_RUNNING 0x40 /* resources allocated */ +#define IFF_NOARP 0x80 /* no address resolution protocol */ +#define IFF_PROMISC 0x100 /* receive all packets */ +#define IFF_ALLMULTI 0x200 /* receive all multicast packets */ +#define IFF_OACTIVE 0x400 /* transmission in progress */ +#define IFF_SIMPLEX 0x800 /* can't hear own transmissions */ +#define IFF_LINK0 0x1000 /* per link layer defined bit */ +#define IFF_LINK1 0x2000 /* per link layer defined bit */ +#define IFF_LINK2 0x4000 /* per link layer defined bit */ +#define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */ +#define IFF_MULTICAST 0x8000 /* supports multicast */ +#endif /* 0 */ + +/* flags set internally only: */ +#define IFF_CANTCHANGE \ + (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ + IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI) + +#define IFQ_MAXLEN 50 +#define IFNET_SLOWHZ 1 /* granularity is 1 second */ + +/* + * Message format for use in obtaining information about interfaces + * from getkerninfo and the routing socket + */ +struct if_msghdr { + u_short ifm_msglen; /* to skip over non-understood messages */ + u_char ifm_version; /* future binary compatability */ + u_char ifm_type; /* message type */ + int ifm_addrs; /* like rtm_addrs */ + int ifm_flags; /* value of if_flags */ + u_short ifm_index; /* index for associated ifp */ + struct if_data ifm_data;/* statistics and other data about if */ +}; + +/* + * Message format for use in obtaining information about interface addresses + * from getkerninfo and the routing socket + */ +struct ifa_msghdr { + u_short ifam_msglen; /* to skip over non-understood messages */ + u_char ifam_version; /* future binary compatability */ + u_char ifam_type; /* message type */ + int ifam_addrs; /* like rtm_addrs */ + int ifam_flags; /* value of ifa_flags */ + u_short ifam_index; /* index for associated ifp */ + int ifam_metric; /* value of ifa_metric */ +}; + +/* + * Message format for use in obtaining information about multicast addresses + * from the routing socket + */ +struct ifma_msghdr { + u_short ifmam_msglen; /* to skip over non-understood messages */ + u_char ifmam_version; /* future binary compatability */ + u_char ifmam_type; /* message type */ + int ifmam_addrs; /* like rtm_addrs */ + int ifmam_flags; /* value of ifa_flags */ + u_short ifmam_index; /* index for associated ifp */ +}; + +/* + * Interface request structure used for socket + * ioctl's. All interface ioctl's must have parameter + * definitions which begin with ifr_name. The + * remainder may be interface specific. + */ +struct ifreq { +#define IFNAMSIZ 16 + char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ + union { + struct sockaddr ifru_addr; + struct sockaddr ifru_dstaddr; + struct sockaddr ifru_broadaddr; + short ifru_flags; + int ifru_metric; + int ifru_mtu; + int ifru_phys; + int ifru_media; + caddr_t ifru_data; + } ifr_ifru; +#define ifr_addr ifr_ifru.ifru_addr /* address */ +#define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ +#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ +#define ifr_flags ifr_ifru.ifru_flags /* flags */ +#define ifr_metric ifr_ifru.ifru_metric /* metric */ +#define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ +#define ifr_phys ifr_ifru.ifru_phys /* physical wire */ +#define ifr_media ifr_ifru.ifru_media /* physical media */ +#define ifr_data ifr_ifru.ifru_data /* for use by interface */ +}; + +#define _SIZEOF_ADDR_IFREQ(ifr) \ + ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \ + (sizeof(struct ifreq) - sizeof(struct sockaddr) + \ + (ifr).ifr_addr.sa_len) : sizeof(struct ifreq)) + +struct ifaliasreq { + char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ + struct sockaddr ifra_addr; + struct sockaddr ifra_broadaddr; + struct sockaddr ifra_mask; +}; + +struct ifmediareq { + char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ + int ifm_current; /* current media options */ + int ifm_mask; /* don't care mask */ + int ifm_status; /* media status */ + int ifm_active; /* active options */ + int ifm_count; /* # entries in ifm_ulist array */ + int *ifm_ulist; /* media words */ +}; +/* + * Structure used in SIOCGIFCONF request. + * Used to retrieve interface configuration + * for machine (useful for programs which + * must know all networks accessible). + */ +struct ifconf { + int ifc_len; /* size of associated buffer */ + union { + caddr_t ifcu_buf; + struct ifreq *ifcu_req; + } ifc_ifcu; +#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ +#define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ +}; + +#ifdef KERNEL +#ifdef MALLOC_DECLARE +MALLOC_DECLARE(M_IFADDR); +MALLOC_DECLARE(M_IFMADDR); +#endif +#endif + +/* XXX - this should go away soon */ +#ifdef KERNEL +#include +#endif + +#endif /* !_NET_IF_H_ */ diff --git a/Win32/Include/net/netdb.h b/Win32/Include/net/netdb.h new file mode 100644 index 0000000..b9d45ac --- /dev/null +++ b/Win32/Include/net/netdb.h @@ -0,0 +1,164 @@ +/*- + * Copyright (c) 1980, 1983, 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)netdb.h 8.1 (Berkeley) 6/2/93 + * netdb.h,v 1.4 1995/08/14 04:05:04 hjl Exp + * - + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * - + * --Copyright-- + */ + +#ifndef _NETDB_H_ +#define _NETDB_H_ + +#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) || defined(_REENTRANT) +#include +#include +#endif + +#include +#include + +#define _PATH_HEQUIV __PATH_ETC_INET"/hosts.equiv" +#define _PATH_HOSTS __PATH_ETC_INET"/hosts" +#define _PATH_NETWORKS __PATH_ETC_INET"/networks" +#define _PATH_PROTOCOLS __PATH_ETC_INET"/protocols" +#define _PATH_SERVICES __PATH_ETC_INET"/services" +#define _PATH_RESCONF __PATH_ETC_INET"/resolv.conf" +#define _PATH_RPC __PATH_ETC_INET"/rpc" + +struct rpcent { + char *r_name; /* name of server for this rpc program */ + char **r_aliases; /* alias list */ + int r_number; /* rpc program number */ +}; + +#ifndef WIN32 +#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) || defined(_REENTRANT) + +#define __NETDB_MAXALIASES 35 +#define __NETDB_MAXADDRS 35 + +/* + * Error return codes from gethostbyname() and gethostbyaddr() + * (left in extern int h_errno). + */ +#define h_errno (*__h_errno_location ()) +#else +extern int h_errno; +#endif +#endif + +#define NETDB_INTERNAL -1 /* see errno */ +#define NETDB_SUCCESS 0 /* no problem */ + +//#include + +void endhostent (void); +void endnetent (void); +void endprotoent (void); +void endservent (void); +void endrpcent (void); +struct hostent *gethostent (void); +struct netent *getnetbyaddr (long, int); /* u_long? */ +struct netent *getnetbyname (const char *); +struct netent *getnetent (void); +struct protoent *getprotoent (void); +struct servent *getservent (void); +struct rpcent *getrpcent (void); +struct rpcent *getrpcbyname (const char *); +struct rpcent *getrpcbynumber (int); +void herror (const char *); +void sethostent (int); +/* void sethostfile (const char *); */ +void setnetent (int); +void setprotoent (int); +void setservent (int); +void setrpcent (int); + +#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) || defined(_REENTRANT) +struct hostent *gethostbyaddr_r (const char *__addr, + int __length, int __type, + struct hostent *__result, + char *__buffer, int __buflen, int *__h_errnop); +struct hostent *gethostbyname_r (const char * __name, + struct hostent *__result, char *__buffer, + int __buflen, int *__h_errnop); +struct hostent *gethostent_r (struct hostent *__result, + char *__buffer, int __buflen, int *__h_errnop); +struct netent *getnetbyaddr_r (long __net, int __type, + struct netent *__result, char *__buffer, + int __buflen); +struct netent *getnetbyname_r (const char * __name, + struct netent *__result, char *__buffer, + int __buflen); +struct netent *getnetent_r (struct netent *__result, + char *__buffer, int __buflen); +struct protoent *getprotobyname_r (const char * __name, + struct protoent *__result, char *__buffer, + int __buflen); +struct protoent *getprotobynumber_r (int __proto, + struct protoent *__result, char *__buffer, + int __buflen); +struct protoent *getprotoent_r (struct protoent *__result, + char *__buffer, int __buflen); +struct servent *getservbyname_r (const char * __name, + const char *__proto, struct servent *__result, + char *__buffer, int __buflen); +struct servent *getservbyport_r (int __port, + const char *__proto, struct servent *__result, + char *__buffer, int __buflen); +struct servent *getservent_r (struct servent *__result, + char *__buffer, int __buflen); + +int *__h_errno_location (void); + +#endif + +#endif /* !_NETDB_H_ */ diff --git a/Win32/Include/net/paths.h b/Win32/Include/net/paths.h new file mode 100644 index 0000000..987de4f --- /dev/null +++ b/Win32/Include/net/paths.h @@ -0,0 +1,105 @@ +/* + * Copyright (c) 1989 The Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)paths.h 5.15 (Berkeley) 5/29/91 + */ + +#ifndef _PATHS_H_ +#define _PATHS_H_ + +#if 0 +#define __PATH_ETC_INET "/usr/etc/inet" +#else +#define __PATH_ETC_INET "/etc" +#endif + +/* Default search path. */ +#define _PATH_DEFPATH "/usr/local/bin:/usr/bin:/bin:." +#define _PATH_DEFPATH_ROOT "/sbin:/bin:/usr/sbin:/usr/bin" + +#define _PATH_BSHELL "/bin/sh" +#define _PATH_CONSOLE "/dev/console" +#define _PATH_CSHELL "/bin/csh" +#define _PATH_DEVDB "/var/run/dev.db" +#define _PATH_DEVNULL "/dev/null" +#define _PATH_DRUM "/dev/drum" +#define _PATH_HEQUIV __PATH_ETC_INET"/hosts.equiv" +#define _PATH_KMEM "/dev/kmem" +#define _PATH_MAILDIR "/var/spool/mail" +#define _PATH_MAN "/usr/man" +#define _PATH_MEM "/dev/mem" +#define _PATH_LOGIN "/bin/login" +#define _PATH_NOLOGIN "/etc/nologin" +#define _PATH_SENDMAIL "/usr/sbin/sendmail" +#define _PATH_SHELLS "/etc/shells" +#define _PATH_TTY "/dev/tty" +#define _PATH_UNIX "/vmlinux" +#define _PATH_VI "/usr/bin/vi" + +/* Provide trailing slash, since mostly used for building pathnames. */ +#define _PATH_DEV "/dev/" +#define _PATH_TMP "/tmp/" +#define _PATH_VARRUN "/var/run/" +#define _PATH_VARTMP "/var/tmp/" + +#define _PATH_KLOG "/proc/kmsg" +#define _PATH_LOGCONF __PATH_ETC_INET"/syslog.conf" +#if 0 +#define _PATH_LOGPID __PATH_ETC_INET"/syslog.pid" +#else +#define _PATH_LOGPID "/var/run/syslog.pid" +#endif +#define _PATH_LOG "/dev/log" +#define _PATH_CONSOLE "/dev/console" + +#if 0 +#define _PATH_UTMP "/var/adm/utmp" +#define _PATH_WTMP "/var/adm/wtmp" +#define _PATH_LASTLOG "/var/adm/lastlog" +#else +#define _PATH_UTMP "/var/run/utmp" +#define _PATH_WTMP "/var/log/wtmp" +#define _PATH_LASTLOG "/var/log/lastlog" +#endif + +#define _PATH_LOCALE "/usr/lib/locale" + +#define _PATH_RWHODIR "/var/spool/rwho" + +#if _MIT_POSIX_THREADS +/* For the MIT pthreads */ +#define _PATH_PTY "/dev/" +#define _PATH_TZDIR "/usr/lib/zoneinfo" +#define _PATH_TZFILE "/usr/lib/zoneinfo/localtime" +#endif + +#endif /* !_PATHS_H_ */ diff --git a/Win32/Include/sockstorage.h b/Win32/Include/sockstorage.h new file mode 100644 index 0000000..557eb4d --- /dev/null +++ b/Win32/Include/sockstorage.h @@ -0,0 +1,38 @@ +/* + * Copyright (C) 1999 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +struct sockaddr_storage { +#ifdef HAVE_SOCKADDR_SA_LEN + u_int8_t __ss_len; + u_int8_t __ss_family; + u_int8_t fill[126]; +#else + u_int8_t __ss_family; + u_int8_t fill[127]; +#endif /* HAVE_SOCKADDR_SA_LEN */ +}; diff --git a/Win32/Prj/libpcap.dsp b/Win32/Prj/libpcap.dsp new file mode 100644 index 0000000..17e5a70 --- /dev/null +++ b/Win32/Prj/libpcap.dsp @@ -0,0 +1,168 @@ +# Microsoft Developer Studio Project File - Name="libpcap" - Package Owner=<4> +# Microsoft Developer Studio Generated Build File, Format Version 6.00 +# ** DO NOT EDIT ** + +# TARGTYPE "Win32 (x86) Static Library" 0x0104 + +CFG=libpcap - Win32 Debug +!MESSAGE This is not a valid makefile. To build this project using NMAKE, +!MESSAGE use the Export Makefile command and run +!MESSAGE +!MESSAGE NMAKE /f "libpcap.mak". +!MESSAGE +!MESSAGE You can specify a configuration when running NMAKE +!MESSAGE by defining the macro CFG on the command line. For example: +!MESSAGE +!MESSAGE NMAKE /f "libpcap.mak" CFG="libpcap - Win32 Debug" +!MESSAGE +!MESSAGE Possible choices for configuration are: +!MESSAGE +!MESSAGE "libpcap - Win32 Release" (based on "Win32 (x86) Static Library") +!MESSAGE "libpcap - Win32 Debug" (based on "Win32 (x86) Static Library") +!MESSAGE + +# Begin Project +# PROP AllowPerConfigDependencies 0 +# PROP Scc_ProjName "" +# PROP Scc_LocalPath "" +CPP=cl.exe +RSC=rc.exe + +!IF "$(CFG)" == "libpcap - Win32 Release" + +# PROP BASE Use_MFC 0 +# PROP BASE Use_Debug_Libraries 0 +# PROP BASE Output_Dir "Release" +# PROP BASE Intermediate_Dir "Release" +# PROP BASE Target_Dir "" +# PROP Use_MFC 0 +# PROP Use_Debug_Libraries 0 +# PROP Output_Dir "Release" +# PROP Intermediate_Dir "Release" +# PROP Target_Dir "" +# ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_MBCS" /D "_LIB" /YX /FD /c +# ADD CPP /nologo /MT /W3 /GX /O2 /I "../../" /I "../../lbl/" /I "../../bpf/" /I "../include/" /I "../../../../common" /I "../../../../dag/include" /I "../../../../dag/drv/windows" /D "NDEBUG" /D "YY_NEVER_INTERACTIVE" /D yylval=pcap_lval /D "_USRDLL" /D "LIBPCAP_EXPORTS" /D "HAVE_STRERROR" /D "__STDC__" /D "INET6" /D "_WINDOWS" /D "_MBCS" /D "HAVE_ADDRINFO" /D "WIN32" /D _U_= /D "HAVE_SNPRINTF" /D "HAVE_VSNPRINTF" /YX /FD /c +# ADD BASE RSC /l 0x409 /d "NDEBUG" +# ADD RSC /l 0x409 /d "NDEBUG" +BSC32=bscmake.exe +# ADD BASE BSC32 /nologo +# ADD BSC32 /nologo +LIB32=link.exe -lib +# ADD BASE LIB32 /nologo +# ADD LIB32 /nologo + +!ELSEIF "$(CFG)" == "libpcap - Win32 Debug" + +# PROP BASE Use_MFC 0 +# PROP BASE Use_Debug_Libraries 1 +# PROP BASE Output_Dir "Debug" +# PROP BASE Intermediate_Dir "Debug" +# PROP BASE Target_Dir "" +# PROP Use_MFC 0 +# PROP Use_Debug_Libraries 1 +# PROP Output_Dir "Debug" +# PROP Intermediate_Dir "Debug" +# PROP Target_Dir "" +# ADD BASE CPP /nologo /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_MBCS" /D "_LIB" /YX /FD /GZ /c +# ADD CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /I "../../" /I "../../lbl/" /I "../../bpf/" /I "../include/" /I "../../../../common" /I "../../../../dag/include" /I "../../../../dag/drv/windows" /D "_DEBUG" /D "YY_NEVER_INTERACTIVE" /D yylval=pcap_lval /D "_USRDLL" /D "LIBPCAP_EXPORTS" /D "HAVE_STRERROR" /D "__STDC__" /D "INET6" /D "_WINDOWS" /D "_MBCS" /D "HAVE_ADDRINFO" /D "WIN32" /D _U_= /D "HAVE_SNPRINTF" /D "HAVE_VSNPRINTF" /YX /FD /GZ /c +# ADD BASE RSC /l 0x409 /d "_DEBUG" +# ADD RSC /l 0x409 /d "_DEBUG" +BSC32=bscmake.exe +# ADD BASE BSC32 /nologo +# ADD BSC32 /nologo +LIB32=link.exe -lib +# ADD BASE LIB32 /nologo +# ADD LIB32 /nologo + +!ENDIF + +# Begin Target + +# Name "libpcap - Win32 Release" +# Name "libpcap - Win32 Debug" +# Begin Source File + +SOURCE=..\..\bpf_dump.c +# End Source File +# Begin Source File + +SOURCE=..\..\bpf\net\bpf_filter.c +# End Source File +# Begin Source File + +SOURCE=..\..\bpf_image.c +# End Source File +# Begin Source File + +SOURCE=..\..\etherent.c +# End Source File +# Begin Source File + +SOURCE="..\..\fad-win32.c" +# End Source File +# Begin Source File + +SOURCE=..\Src\ffs.c +# End Source File +# Begin Source File + +SOURCE=..\..\gencode.c +# End Source File +# Begin Source File + +SOURCE=..\Src\getnetbynm.c +# End Source File +# Begin Source File + +SOURCE=..\Src\getnetent.c +# End Source File +# Begin Source File + +SOURCE=..\Src\getservent.c +# End Source File +# Begin Source File + +SOURCE=..\..\grammar.c +# End Source File +# Begin Source File + +SOURCE=..\..\inet.c +# End Source File +# Begin Source File + +SOURCE=..\Src\inet_aton.c +# End Source File +# Begin Source File + +SOURCE=..\Src\inet_net.c +# End Source File +# Begin Source File + +SOURCE=..\Src\inet_pton.c +# End Source File +# Begin Source File + +SOURCE=..\..\nametoaddr.c +# End Source File +# Begin Source File + +SOURCE=..\..\optimize.c +# End Source File +# Begin Source File + +SOURCE="..\..\Pcap-win32.c" +# End Source File +# Begin Source File + +SOURCE=..\..\pcap.c +# End Source File +# Begin Source File + +SOURCE=..\..\savefile.c +# End Source File +# Begin Source File + +SOURCE=..\..\scanner.c +# End Source File +# End Target +# End Project diff --git a/Win32/Prj/libpcap.dsw b/Win32/Prj/libpcap.dsw new file mode 100644 index 0000000..8cdff2d --- /dev/null +++ b/Win32/Prj/libpcap.dsw @@ -0,0 +1,29 @@ +Microsoft Developer Studio Workspace File, Format Version 6.00 +# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE! + +############################################################################### + +Project: "libpcap"=".\libpcap.dsp" - Package Owner=<4> + +Package=<5> +{{{ +}}} + +Package=<4> +{{{ +}}} + +############################################################################### + +Global: + +Package=<5> +{{{ +}}} + +Package=<3> +{{{ +}}} + +############################################################################### + diff --git a/Win32/Src/ffs.c b/Win32/Src/ffs.c new file mode 100644 index 0000000..099ff8e --- /dev/null +++ b/Win32/Src/ffs.c @@ -0,0 +1,54 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)ffs.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ + +#include + +/* + * ffs -- vax ffs instruction + */ +int +ffs(mask) + register int mask; +{ + register int bit; + + if (mask == 0) + return(0); + for (bit = 1; !(mask & 1); bit++) + mask >>= 1; + return(bit); +} diff --git a/Win32/Src/gai_strerror.c b/Win32/Src/gai_strerror.c new file mode 100644 index 0000000..edd970b --- /dev/null +++ b/Win32/Src/gai_strerror.c @@ -0,0 +1,83 @@ +/* + * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* +#include + +__FBSDID("$FreeBSD: /repoman/r/ncvs/src/lib/libc/net/gai_strerror.c,v 1.1 2005/04/06 12:45:51 ume Exp $"); + +*/ + +#ifdef WIN32 + +#include + +#else + +#include + +#endif + +/* Entries EAI_ADDRFAMILY (1) and EAI_NODATA (7) are obsoleted, but left */ +/* for backward compatibility with userland code prior to 2553bis-02 */ +static char *ai_errlist[] = { + "Success", /* 0 */ + "Address family for hostname not supported", /* 1 */ + "Temporary failure in name resolution", /* EAI_AGAIN */ + "Invalid value for ai_flags", /* EAI_BADFLAGS */ + "Non-recoverable failure in name resolution", /* EAI_FAIL */ + "ai_family not supported", /* EAI_FAMILY */ + "Memory allocation failure", /* EAI_MEMORY */ + "No address associated with hostname", /* 7 */ + "hostname nor servname provided, or not known", /* EAI_NONAME */ + "servname not supported for ai_socktype", /* EAI_SERVICE */ + "ai_socktype not supported", /* EAI_SOCKTYPE */ + "System error returned in errno", /* EAI_SYSTEM */ + "Invalid value for hints", /* EAI_BADHINTS */ + "Resolved protocol is unknown" /* EAI_PROTOCOL */ +}; + +#ifndef EAI_MAX +#define EAI_MAX (sizeof(ai_errlist)/sizeof(ai_errlist[0])) +#endif + +/* on MingW, gai_strerror is available. + We need to compile gai_strerrorA only for Cygwin + */ +#ifndef gai_strerror + +char * +WSAAPI gai_strerrorA(int ecode) +{ + if (ecode >= 0 && ecode < EAI_MAX) + return ai_errlist[ecode]; + return "Unknown error"; +} + +#endif /* gai_strerror */ \ No newline at end of file diff --git a/Win32/Src/getaddrinfo.c b/Win32/Src/getaddrinfo.c new file mode 100644 index 0000000..ebfe8c2 --- /dev/null +++ b/Win32/Src/getaddrinfo.c @@ -0,0 +1,1129 @@ +/* + * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * "#ifdef FAITH" part is local hack for supporting IPv4-v6 translator. + * + * Issues to be discussed: + * - Thread safe-ness must be checked. + * - Return values. There are nonstandard return values defined and used + * in the source code. This is because RFC2553 is silent about which error + * code must be returned for which situation. + * Note: + * - We use getipnodebyname() just for thread-safeness. There's no intent + * to let it do PF_UNSPEC (actually we never pass PF_UNSPEC to + * getipnodebyname(). + * - The code filters out AFs that are not supported by the kernel, + * when globbing NULL hostname (to loopback, or wildcard). Is it the right + * thing to do? What is the relationship with post-RFC2553 AI_ADDRCONFIG + * in ai_flags? + */ + +/* + * Mingw64 has its own implementation of getaddrinfo, mingw32 no + */ +#ifndef __MINGW64__ + + +#ifdef HAVE_CONFIG_H +#include +#endif + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/Win32/Src/getaddrinfo.c,v 1.3 2008-09-15 23:37:51 guy Exp $"; +#endif + +#include +#if 0 +#include +#endif +#ifndef __MINGW32__ +#include +#endif +#include +#include +#include +#include +#include +#include + +#ifndef HAVE_PORTABLE_PROTOTYPE +#include "cdecl_ext.h" +#endif + +#ifndef HAVE_U_INT32_T +#include "bittypes.h" +#endif + +#ifndef HAVE_SOCKADDR_STORAGE +#ifndef __MINGW32__ +#include "sockstorage.h" +#endif +#endif + +#ifdef NEED_ADDRINFO_H +#include "addrinfo.h" +#ifdef WIN32 +#include "ip6_misc.h" +#endif +#endif + + +#if defined(__KAME__) && defined(INET6) +# define FAITH +#endif + +#define SUCCESS 0 +#define ANY 0 +#define YES 1 +#define NO 0 + +#ifdef FAITH +static int translate = NO; +static struct in6_addr faith_prefix = IN6ADDR_ANY_INIT; +#endif + +static const char in_addrany[] = { 0, 0, 0, 0 }; +static const char in6_addrany[] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; +static const char in_loopback[] = { 127, 0, 0, 1 }; +static const char in6_loopback[] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 +}; + +struct sockinet { + u_char si_len; + u_char si_family; + u_short si_port; + u_int32_t si_scope_id; +}; + +static const struct afd { + int a_af; + int a_addrlen; + int a_socklen; + int a_off; + const char *a_addrany; + const char *a_loopback; + int a_scoped; +} afdl [] = { +#ifdef INET6 + {PF_INET6, sizeof(struct in6_addr), + sizeof(struct sockaddr_in6), + offsetof(struct sockaddr_in6, sin6_addr), + in6_addrany, in6_loopback, 1}, +#endif + {PF_INET, sizeof(struct in_addr), + sizeof(struct sockaddr_in), + offsetof(struct sockaddr_in, sin_addr), + in_addrany, in_loopback, 0}, + {0, 0, 0, 0, NULL, NULL, 0}, +}; + +struct explore { + int e_af; + int e_socktype; + int e_protocol; + const char *e_protostr; + int e_wild; +#define WILD_AF(ex) ((ex)->e_wild & 0x01) +#define WILD_SOCKTYPE(ex) ((ex)->e_wild & 0x02) +#define WILD_PROTOCOL(ex) ((ex)->e_wild & 0x04) +}; + +static const struct explore explore[] = { +#if 0 + { PF_LOCAL, 0, ANY, ANY, NULL, 0x01 }, +#endif +#ifdef INET6 + { PF_INET6, SOCK_DGRAM, IPPROTO_UDP, "udp", 0x07 }, + { PF_INET6, SOCK_STREAM, IPPROTO_TCP, "tcp", 0x07 }, + { PF_INET6, SOCK_RAW, ANY, NULL, 0x05 }, +#endif + { PF_INET, SOCK_DGRAM, IPPROTO_UDP, "udp", 0x07 }, + { PF_INET, SOCK_STREAM, IPPROTO_TCP, "tcp", 0x07 }, + { PF_INET, SOCK_RAW, ANY, NULL, 0x05 }, + { -1, 0, 0, NULL, 0 }, +}; + +#ifdef INET6 +#define PTON_MAX 16 +#else +#define PTON_MAX 4 +#endif + + +static int str_isnumber __P((const char *)); +static int explore_fqdn __P((const struct addrinfo *, const char *, + const char *, struct addrinfo **)); +static int explore_null __P((const struct addrinfo *, const char *, + const char *, struct addrinfo **)); +static int explore_numeric __P((const struct addrinfo *, const char *, + const char *, struct addrinfo **)); +static int explore_numeric_scope __P((const struct addrinfo *, const char *, + const char *, struct addrinfo **)); +static int get_name __P((const char *, const struct afd *, struct addrinfo **, + char *, const struct addrinfo *, const char *)); +static int get_canonname __P((const struct addrinfo *, + struct addrinfo *, const char *)); +static struct addrinfo *get_ai __P((const struct addrinfo *, + const struct afd *, const char *)); +static int get_portmatch __P((const struct addrinfo *, const char *)); +static int get_port __P((struct addrinfo *, const char *, int)); +static const struct afd *find_afd __P((int)); + +static char *ai_errlist[] = { + "Success", + "Address family for hostname not supported", /* EAI_ADDRFAMILY */ + "Temporary failure in name resolution", /* EAI_AGAIN */ + "Invalid value for ai_flags", /* EAI_BADFLAGS */ + "Non-recoverable failure in name resolution", /* EAI_FAIL */ + "ai_family not supported", /* EAI_FAMILY */ + "Memory allocation failure", /* EAI_MEMORY */ + "No address associated with hostname", /* EAI_NODATA */ + "hostname nor servname provided, or not known", /* EAI_NONAME */ + "servname not supported for ai_socktype", /* EAI_SERVICE */ + "ai_socktype not supported", /* EAI_SOCKTYPE */ + "System error returned in errno", /* EAI_SYSTEM */ + "Invalid value for hints", /* EAI_BADHINTS */ + "Resolved protocol is unknown", /* EAI_PROTOCOL */ + "Unknown error", /* EAI_MAX */ +}; + +/* XXX macros that make external reference is BAD. */ + +#define GET_AI(ai, afd, addr) \ +do { \ + /* external reference: pai, error, and label free */ \ + (ai) = get_ai(pai, (afd), (addr)); \ + if ((ai) == NULL) { \ + error = EAI_MEMORY; \ + goto free; \ + } \ +} while (0) + +#define GET_PORT(ai, serv) \ +do { \ + /* external reference: error and label free */ \ + error = get_port((ai), (serv), 0); \ + if (error != 0) \ + goto free; \ +} while (0) + +#define GET_CANONNAME(ai, str) \ +do { \ + /* external reference: pai, error and label free */ \ + error = get_canonname(pai, (ai), (str)); \ + if (error != 0) \ + goto free; \ +} while (0) + +#define ERR(err) \ +do { \ + /* external reference: error, and label bad */ \ + error = (err); \ + goto bad; \ +} while (0) + +#define MATCH_FAMILY(x, y, w) \ + ((x) == (y) || ((w) && ((x) == PF_UNSPEC || (y) == PF_UNSPEC))) +#define MATCH(x, y, w) \ + ((x) == (y) || ((w) && ((x) == ANY || (y) == ANY))) + +#if defined(DEFINE_ADDITIONAL_IPV6_STUFF) +char * +gai_strerror(ecode) + int ecode; +{ + if (ecode < 0 || ecode > EAI_MAX) + ecode = EAI_MAX; + return ai_errlist[ecode]; +} +#endif + +void +freeaddrinfo(ai) + struct addrinfo *ai; +{ + struct addrinfo *next; + + do { + next = ai->ai_next; + if (ai->ai_canonname) + free(ai->ai_canonname); + /* no need to free(ai->ai_addr) */ + free(ai); + } while ((ai = next) != NULL); +} + +static int +str_isnumber(p) + const char *p; +{ + char *q = (char *)p; + while (*q) { + if (! isdigit(*q)) + return NO; + q++; + } + return YES; +} + +int +getaddrinfo(hostname, servname, hints, res) + const char *hostname, *servname; + const struct addrinfo *hints; + struct addrinfo **res; +{ + struct addrinfo sentinel; + struct addrinfo *cur; + int error = 0; + struct addrinfo ai; + struct addrinfo ai0; + struct addrinfo *pai; + const struct afd *afd; + const struct explore *ex; + +#ifdef FAITH + static int firsttime = 1; + + if (firsttime) { + /* translator hack */ + char *q = getenv("GAI"); + if (q && inet_pton(AF_INET6, q, &faith_prefix) == 1) + translate = YES; + firsttime = 0; + } +#endif + + sentinel.ai_next = NULL; + cur = &sentinel; + pai = &ai; + pai->ai_flags = 0; + pai->ai_family = PF_UNSPEC; + pai->ai_socktype = ANY; + pai->ai_protocol = ANY; + pai->ai_addrlen = 0; + pai->ai_canonname = NULL; + pai->ai_addr = NULL; + pai->ai_next = NULL; + + if (hostname == NULL && servname == NULL) + return EAI_NONAME; + if (hints) { + /* error check for hints */ + if (hints->ai_addrlen || hints->ai_canonname || + hints->ai_addr || hints->ai_next) + ERR(EAI_BADHINTS); /* xxx */ + if (hints->ai_flags & ~AI_MASK) + ERR(EAI_BADFLAGS); + switch (hints->ai_family) { + case PF_UNSPEC: + case PF_INET: +#ifdef INET6 + case PF_INET6: +#endif + break; + default: + ERR(EAI_FAMILY); + } + memcpy(pai, hints, sizeof(*pai)); + + /* + * if both socktype/protocol are specified, check if they + * are meaningful combination. + */ + if (pai->ai_socktype != ANY && pai->ai_protocol != ANY) { + for (ex = explore; ex->e_af >= 0; ex++) { + if (pai->ai_family != ex->e_af) + continue; + if (ex->e_socktype == ANY) + continue; + if (ex->e_protocol == ANY) + continue; + if (pai->ai_socktype == ex->e_socktype + && pai->ai_protocol != ex->e_protocol) { + ERR(EAI_BADHINTS); + } + } + } + } + + /* + * check for special cases. (1) numeric servname is disallowed if + * socktype/protocol are left unspecified. (2) servname is disallowed + * for raw and other inet{,6} sockets. + */ + if (MATCH_FAMILY(pai->ai_family, PF_INET, 1) +#ifdef PF_INET6 + || MATCH_FAMILY(pai->ai_family, PF_INET6, 1) +#endif + ) { + ai0 = *pai; + + if (pai->ai_family == PF_UNSPEC) { +#ifdef PF_INET6 + pai->ai_family = PF_INET6; +#else + pai->ai_family = PF_INET; +#endif + } + error = get_portmatch(pai, servname); + if (error) + ERR(error); + + *pai = ai0; + } + + ai0 = *pai; + + /* NULL hostname, or numeric hostname */ + for (ex = explore; ex->e_af >= 0; ex++) { + *pai = ai0; + + if (!MATCH_FAMILY(pai->ai_family, ex->e_af, WILD_AF(ex))) + continue; + if (!MATCH(pai->ai_socktype, ex->e_socktype, WILD_SOCKTYPE(ex))) + continue; + if (!MATCH(pai->ai_protocol, ex->e_protocol, WILD_PROTOCOL(ex))) + continue; + + if (pai->ai_family == PF_UNSPEC) + pai->ai_family = ex->e_af; + if (pai->ai_socktype == ANY && ex->e_socktype != ANY) + pai->ai_socktype = ex->e_socktype; + if (pai->ai_protocol == ANY && ex->e_protocol != ANY) + pai->ai_protocol = ex->e_protocol; + + if (hostname == NULL) + error = explore_null(pai, hostname, servname, &cur->ai_next); + else + error = explore_numeric_scope(pai, hostname, servname, &cur->ai_next); + + if (error) + goto free; + + while (cur && cur->ai_next) + cur = cur->ai_next; + } + + /* + * XXX + * If numreic representation of AF1 can be interpreted as FQDN + * representation of AF2, we need to think again about the code below. + */ + if (sentinel.ai_next) + goto good; + + if (pai->ai_flags & AI_NUMERICHOST) + ERR(EAI_NONAME); + if (hostname == NULL) + ERR(EAI_NONAME); + + /* + * hostname as alphabetical name. + * we would like to prefer AF_INET6 than AF_INET, so we'll make a + * outer loop by AFs. + */ + for (afd = afdl; afd->a_af; afd++) { + *pai = ai0; + + if (!MATCH_FAMILY(pai->ai_family, afd->a_af, 1)) + continue; + + for (ex = explore; ex->e_af >= 0; ex++) { + *pai = ai0; + + if (pai->ai_family == PF_UNSPEC) + pai->ai_family = afd->a_af; + + if (!MATCH_FAMILY(pai->ai_family, ex->e_af, WILD_AF(ex))) + continue; + if (!MATCH(pai->ai_socktype, ex->e_socktype, + WILD_SOCKTYPE(ex))) { + continue; + } + if (!MATCH(pai->ai_protocol, ex->e_protocol, + WILD_PROTOCOL(ex))) { + continue; + } + + if (pai->ai_family == PF_UNSPEC) + pai->ai_family = ex->e_af; + if (pai->ai_socktype == ANY && ex->e_socktype != ANY) + pai->ai_socktype = ex->e_socktype; + if (pai->ai_protocol == ANY && ex->e_protocol != ANY) + pai->ai_protocol = ex->e_protocol; + + error = explore_fqdn(pai, hostname, servname, + &cur->ai_next); + + while (cur && cur->ai_next) + cur = cur->ai_next; + } + } + + /* XXX */ + if (sentinel.ai_next) + error = 0; + + if (error) + goto free; + if (error == 0) { + if (sentinel.ai_next) { + good: + *res = sentinel.ai_next; + return SUCCESS; + } else + error = EAI_FAIL; + } + free: + bad: + if (sentinel.ai_next) + freeaddrinfo(sentinel.ai_next); + *res = NULL; + return error; +} + +/* + * FQDN hostname, DNS lookup + */ +static int +explore_fqdn(pai, hostname, servname, res) + const struct addrinfo *pai; + const char *hostname; + const char *servname; + struct addrinfo **res; +{ + struct hostent *hp; + int h_error; + int af; + char **aplist = NULL, *apbuf = NULL; + char *ap; + struct addrinfo sentinel, *cur; + int i; +#ifndef USE_GETIPNODEBY + int naddrs; +#endif + const struct afd *afd; + int error; + + *res = NULL; + sentinel.ai_next = NULL; + cur = &sentinel; + + /* + * Do not filter unsupported AFs here. We need to honor content of + * databases (/etc/hosts, DNS and others). Otherwise we cannot + * replace gethostbyname() by getaddrinfo(). + */ + + /* + * if the servname does not match socktype/protocol, ignore it. + */ + if (get_portmatch(pai, servname) != 0) + return 0; + + afd = find_afd(pai->ai_family); + + /* + * post-RFC2553: should look at (pai->ai_flags & AI_ADDRCONFIG) + * rather than hardcoding it. we may need to add AI_ADDRCONFIG + * handling code by ourselves in case we don't have getipnodebyname(). + */ +#ifdef USE_GETIPNODEBY + hp = getipnodebyname(hostname, pai->ai_family, AI_ADDRCONFIG, &h_error); +#else +#ifdef HAVE_GETHOSTBYNAME2 + hp = gethostbyname2(hostname, pai->ai_family); +#else + if (pai->ai_family != AF_INET) + return 0; + hp = gethostbyname(hostname); +#ifdef HAVE_H_ERRNO + h_error = h_errno; +#else + h_error = EINVAL; +#endif +#endif /*HAVE_GETHOSTBYNAME2*/ +#endif /*USE_GETIPNODEBY*/ + + if (hp == NULL) { + switch (h_error) { + case HOST_NOT_FOUND: + case NO_DATA: + error = EAI_NODATA; + break; + case TRY_AGAIN: + error = EAI_AGAIN; + break; + case NO_RECOVERY: + case NETDB_INTERNAL: + default: + error = EAI_FAIL; + break; + } + } else if ((hp->h_name == NULL) || (hp->h_name[0] == 0) + || (hp->h_addr_list[0] == NULL)) { +#ifdef USE_GETIPNODEBY + freehostent(hp); +#endif + hp = NULL; + error = EAI_FAIL; + } + + if (hp == NULL) + goto free; + +#ifdef USE_GETIPNODEBY + aplist = hp->h_addr_list; +#else + /* + * hp will be overwritten if we use gethostbyname2(). + * always deep copy for simplification. + */ + for (naddrs = 0; hp->h_addr_list[naddrs] != NULL; naddrs++) + ; + naddrs++; + aplist = (char **)malloc(sizeof(aplist[0]) * naddrs); + apbuf = (char *)malloc(hp->h_length * naddrs); + if (aplist == NULL || apbuf == NULL) { + error = EAI_MEMORY; + goto free; + } + memset(aplist, 0, sizeof(aplist[0]) * naddrs); + for (i = 0; i < naddrs; i++) { + if (hp->h_addr_list[i] == NULL) { + aplist[i] = NULL; + continue; + } + memcpy(&apbuf[i * hp->h_length], hp->h_addr_list[i], + hp->h_length); + aplist[i] = &apbuf[i * hp->h_length]; + } +#endif + + for (i = 0; aplist[i] != NULL; i++) { + af = hp->h_addrtype; + ap = aplist[i]; +#ifdef AF_INET6 + if (af == AF_INET6 + && IN6_IS_ADDR_V4MAPPED((struct in6_addr *)ap)) { + af = AF_INET; + ap = ap + sizeof(struct in6_addr) + - sizeof(struct in_addr); + } +#endif + + if (af != pai->ai_family) + continue; + + if ((pai->ai_flags & AI_CANONNAME) == 0) { + GET_AI(cur->ai_next, afd, ap); + GET_PORT(cur->ai_next, servname); + } else { + /* + * if AI_CANONNAME and if reverse lookup + * fail, return ai anyway to pacify + * calling application. + * + * XXX getaddrinfo() is a name->address + * translation function, and it looks + * strange that we do addr->name + * translation here. + */ + get_name(ap, afd, &cur->ai_next, + ap, pai, servname); + } + + while (cur && cur->ai_next) + cur = cur->ai_next; + } + + *res = sentinel.ai_next; + return 0; + +free: +#ifdef USE_GETIPNODEBY + if (hp) + freehostent(hp); +#endif + if (aplist) + free(aplist); + if (apbuf) + free(apbuf); + if (sentinel.ai_next) + freeaddrinfo(sentinel.ai_next); + return error; +} + +/* + * hostname == NULL. + * passive socket -> anyaddr (0.0.0.0 or ::) + * non-passive socket -> localhost (127.0.0.1 or ::1) + */ +static int +explore_null(pai, hostname, servname, res) + const struct addrinfo *pai; + const char *hostname; + const char *servname; + struct addrinfo **res; +{ + int s; + const struct afd *afd; + struct addrinfo *cur; + struct addrinfo sentinel; + int error; + + *res = NULL; + sentinel.ai_next = NULL; + cur = &sentinel; + + /* + * filter out AFs that are not supported by the kernel + * XXX errno? + */ + s = socket(pai->ai_family, SOCK_DGRAM, 0); + if (s < 0) { + if (errno != EMFILE) + return 0; + } else + close(s); + + /* + * if the servname does not match socktype/protocol, ignore it. + */ + if (get_portmatch(pai, servname) != 0) + return 0; + + afd = find_afd(pai->ai_family); + + if (pai->ai_flags & AI_PASSIVE) { + GET_AI(cur->ai_next, afd, afd->a_addrany); + /* xxx meaningless? + * GET_CANONNAME(cur->ai_next, "anyaddr"); + */ + GET_PORT(cur->ai_next, servname); + } else { + GET_AI(cur->ai_next, afd, afd->a_loopback); + /* xxx meaningless? + * GET_CANONNAME(cur->ai_next, "localhost"); + */ + GET_PORT(cur->ai_next, servname); + } + cur = cur->ai_next; + + *res = sentinel.ai_next; + return 0; + +free: + if (sentinel.ai_next) + freeaddrinfo(sentinel.ai_next); + return error; +} + +/* + * numeric hostname + */ +static int +explore_numeric(pai, hostname, servname, res) + const struct addrinfo *pai; + const char *hostname; + const char *servname; + struct addrinfo **res; +{ + const struct afd *afd; + struct addrinfo *cur; + struct addrinfo sentinel; + int error; + char pton[PTON_MAX]; + int flags; + + *res = NULL; + sentinel.ai_next = NULL; + cur = &sentinel; + + /* + * if the servname does not match socktype/protocol, ignore it. + */ + if (get_portmatch(pai, servname) != 0) + return 0; + + afd = find_afd(pai->ai_family); + flags = pai->ai_flags; + + if (inet_pton(afd->a_af, hostname, pton) == 1) { + u_int32_t v4a; +#ifdef INET6 + u_char pfx; +#endif + + switch (afd->a_af) { + case AF_INET: + v4a = (u_int32_t)ntohl(((struct in_addr *)pton)->s_addr); + if (IN_MULTICAST(v4a) || IN_EXPERIMENTAL(v4a)) + flags &= ~AI_CANONNAME; + v4a >>= IN_CLASSA_NSHIFT; + if (v4a == 0 || v4a == IN_LOOPBACKNET) + flags &= ~AI_CANONNAME; + break; +#ifdef INET6 + case AF_INET6: + pfx = ((struct in6_addr *)pton)->s6_addr[0]; + if (pfx == 0 || pfx == 0xfe || pfx == 0xff) + flags &= ~AI_CANONNAME; + break; +#endif + } + + if (pai->ai_family == afd->a_af || + pai->ai_family == PF_UNSPEC /*?*/) { + if ((flags & AI_CANONNAME) == 0) { + GET_AI(cur->ai_next, afd, pton); + GET_PORT(cur->ai_next, servname); + } else { + /* + * if AI_CANONNAME and if reverse lookup + * fail, return ai anyway to pacify + * calling application. + * + * XXX getaddrinfo() is a name->address + * translation function, and it looks + * strange that we do addr->name + * translation here. + */ + get_name(pton, afd, &cur->ai_next, + pton, pai, servname); + } + while (cur && cur->ai_next) + cur = cur->ai_next; + } else + ERR(EAI_FAMILY); /*xxx*/ + } + + *res = sentinel.ai_next; + return 0; + +free: +bad: + if (sentinel.ai_next) + freeaddrinfo(sentinel.ai_next); + return error; +} + +/* + * numeric hostname with scope + */ +static int +explore_numeric_scope(pai, hostname, servname, res) + const struct addrinfo *pai; + const char *hostname; + const char *servname; + struct addrinfo **res; +{ +#ifndef SCOPE_DELIMITER + return explore_numeric(pai, hostname, servname, res); +#else + const struct afd *afd; + struct addrinfo *cur; + int error; + char *cp, *hostname2 = NULL; + int scope; + struct sockaddr_in6 *sin6; + + /* + * if the servname does not match socktype/protocol, ignore it. + */ + if (get_portmatch(pai, servname) != 0) + return 0; + + afd = find_afd(pai->ai_family); + if (!afd->a_scoped) + return explore_numeric(pai, hostname, servname, res); + + cp = strchr(hostname, SCOPE_DELIMITER); + if (cp == NULL) + return explore_numeric(pai, hostname, servname, res); + + /* + * Handle special case of + */ + hostname2 = strdup(hostname); + if (hostname2 == NULL) + return EAI_MEMORY; + /* terminate at the delimiter */ + hostname2[cp - hostname] = '\0'; + + cp++; + switch (pai->ai_family) { +#ifdef INET6 + case AF_INET6: + scope = if_nametoindex(cp); + if (scope == 0) { + free(hostname2); + return (EAI_NONAME); + } + break; +#endif + } + + error = explore_numeric(pai, hostname2, servname, res); + if (error == 0) { + for (cur = *res; cur; cur = cur->ai_next) { + if (cur->ai_family != AF_INET6) + continue; + sin6 = (struct sockaddr_in6 *)cur->ai_addr; + if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) || + IN6_IS_ADDR_MC_LINKLOCAL(&sin6->sin6_addr)) + sin6->sin6_scope_id = scope; + } + } + + free(hostname2); + + return error; +#endif +} + +static int +get_name(addr, afd, res, numaddr, pai, servname) + const char *addr; + const struct afd *afd; + struct addrinfo **res; + char *numaddr; + const struct addrinfo *pai; + const char *servname; +{ + struct hostent *hp = NULL; + struct addrinfo *cur = NULL; + int error = 0; + char *ap = NULL, *cn = NULL; +#ifdef USE_GETIPNODEBY + int h_error; + + hp = getipnodebyaddr(addr, afd->a_addrlen, afd->a_af, &h_error); +#else + hp = gethostbyaddr(addr, afd->a_addrlen, afd->a_af); +#endif + if (hp && hp->h_name && hp->h_name[0] && hp->h_addr_list[0]) { +#ifdef USE_GETIPNODEBY + GET_AI(cur, afd, hp->h_addr_list[0]); + GET_PORT(cur, servname); + GET_CANONNAME(cur, hp->h_name); +#else + /* hp will be damaged if we use gethostbyaddr() */ + if ((ap = (char *)malloc(hp->h_length)) == NULL) { + error = EAI_MEMORY; + goto free; + } + memcpy(ap, hp->h_addr_list[0], hp->h_length); + if ((cn = strdup(hp->h_name)) == NULL) { + error = EAI_MEMORY; + goto free; + } + + GET_AI(cur, afd, ap); + GET_PORT(cur, servname); + GET_CANONNAME(cur, cn); + free(ap); ap = NULL; + free(cn); cn = NULL; +#endif + } else { + GET_AI(cur, afd, numaddr); + GET_PORT(cur, servname); + } + +#ifdef USE_GETIPNODEBY + if (hp) + freehostent(hp); +#endif + *res = cur; + return SUCCESS; + free: + if (cur) + freeaddrinfo(cur); + if (ap) + free(ap); + if (cn) + free(cn); +#ifdef USE_GETIPNODEBY + if (hp) + freehostent(hp); +#endif + *res = NULL; + return error; +} + +static int +get_canonname(pai, ai, str) + const struct addrinfo *pai; + struct addrinfo *ai; + const char *str; +{ + if ((pai->ai_flags & AI_CANONNAME) != 0) { + ai->ai_canonname = strdup(str); + if (ai->ai_canonname == NULL) + return EAI_MEMORY; + } + return 0; +} + +static struct addrinfo * +get_ai(pai, afd, addr) + const struct addrinfo *pai; + const struct afd *afd; + const char *addr; +{ + char *p; + struct addrinfo *ai; + + ai = (struct addrinfo *)malloc(sizeof(struct addrinfo) + + (afd->a_socklen)); + if (ai == NULL) + return NULL; + + memcpy(ai, pai, sizeof(struct addrinfo)); + ai->ai_addr = (struct sockaddr *)(ai + 1); + memset(ai->ai_addr, 0, afd->a_socklen); +#ifdef HAVE_SOCKADDR_SA_LEN + ai->ai_addr->sa_len = afd->a_socklen; +#endif + ai->ai_addrlen = afd->a_socklen; + ai->ai_addr->sa_family = ai->ai_family = afd->a_af; + p = (char *)(ai->ai_addr); + memcpy(p + afd->a_off, addr, afd->a_addrlen); + return ai; +} + +static int +get_portmatch(ai, servname) + const struct addrinfo *ai; + const char *servname; +{ + + /* get_port does not touch first argument. when matchonly == 1. */ + return get_port((struct addrinfo *)ai, servname, 1); +} + +static int +get_port(ai, servname, matchonly) + struct addrinfo *ai; + const char *servname; + int matchonly; +{ + const char *proto; + struct servent *sp; + int port; + int allownumeric; + + if (servname == NULL) + return 0; + switch (ai->ai_family) { + case AF_INET: +#ifdef AF_INET6 + case AF_INET6: +#endif + break; + default: + return 0; + } + + switch (ai->ai_socktype) { + case SOCK_RAW: + return EAI_SERVICE; + case SOCK_DGRAM: + case SOCK_STREAM: + allownumeric = 1; + break; + case ANY: + allownumeric = 0; + break; + default: + return EAI_SOCKTYPE; + } + + if (str_isnumber(servname)) { + if (!allownumeric) + return EAI_SERVICE; + port = htons(atoi(servname)); + if (port < 0 || port > 65535) + return EAI_SERVICE; + } else { + switch (ai->ai_socktype) { + case SOCK_DGRAM: + proto = "udp"; + break; + case SOCK_STREAM: + proto = "tcp"; + break; + default: + proto = NULL; + break; + } + + if ((sp = getservbyname(servname, proto)) == NULL) + return EAI_SERVICE; + port = sp->s_port; + } + + if (!matchonly) { + switch (ai->ai_family) { + case AF_INET: + ((struct sockaddr_in *)ai->ai_addr)->sin_port = port; + break; +#ifdef INET6 + case AF_INET6: + ((struct sockaddr_in6 *)ai->ai_addr)->sin6_port = port; + break; +#endif + } + } + + return 0; +} + +static const struct afd * +find_afd(af) + int af; +{ + const struct afd *afd; + + if (af == PF_UNSPEC) + return NULL; + for (afd = afdl; afd->a_af; afd++) { + if (afd->a_af == af) + return afd; + } + return NULL; +} + + +#endif /*__MING64__*/ diff --git a/Win32/Src/getnetbynm.c b/Win32/Src/getnetbynm.c new file mode 100644 index 0000000..fa4d398 --- /dev/null +++ b/Win32/Src/getnetbynm.c @@ -0,0 +1,44 @@ +/* + * Copyright (c) 1983 Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms are permitted + * provided that the above copyright notice and this paragraph are + * duplicated in all such forms and that any documentation, + * advertising materials, and other materials related to such + * distribution and use acknowledge that the software was developed + * by the University of California, Berkeley. The name of the + * University may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getnetbyname.c 5.5 (Berkeley) 6/27/88"; +#endif /* LIBC_SCCS and not lint */ + +#include "inetprivate.h" + +extern int _net_stayopen; + +struct netent * +getnetbyname(const char *name) +{ + register struct netent *p; + register char **cp; + + setnetent(_net_stayopen); + while (p = getnetent()) { + if (strcmp(p->n_name, name) == 0) + break; + for (cp = p->n_aliases; *cp != 0; cp++) + if (strcmp(*cp, name) == 0) + goto found; + } +found: + if (!_net_stayopen) + endnetent(); + return (p); +} diff --git a/Win32/Src/getnetent.c b/Win32/Src/getnetent.c new file mode 100644 index 0000000..d4cceb3 --- /dev/null +++ b/Win32/Src/getnetent.c @@ -0,0 +1,119 @@ +/* + * Copyright (c) 1983 Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms are permitted + * provided that the above copyright notice and this paragraph are + * duplicated in all such forms and that any documentation, + * advertising materials, and other materials related to such + * distribution and use acknowledge that the software was developed + * by the University of California, Berkeley. The name of the + * University may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getnetent.c 5.5 (Berkeley) 6/27/88"; +#endif /* LIBC_SCCS and not lint */ + +#include "inetprivate.h" + +#define MAXALIASES 35 + +static char NETDB[] = _PATH_NETWORKS; +static FILE *netf = NULL; +static char line[BUFSIZ+1]; +static struct netent net; +static char *net_aliases[MAXALIASES]; +static char *any(char *, char *); + +int _net_stayopen; +extern u_int32_t inet_network(const char *cp); + +void +setnetent(f) + int f; +{ + if (netf == NULL) + netf = fopen(NETDB, "r" ); + else + rewind(netf); + _net_stayopen |= f; +} + +void +endnetent() +{ + if (netf) { + fclose(netf); + netf = NULL; + } + _net_stayopen = 0; +} + +struct netent * +getnetent() +{ + char *p; + register char *cp, **q; + + if (netf == NULL && (netf = fopen(NETDB, "r" )) == NULL) + return (NULL); +again: + p = fgets(line, BUFSIZ, netf); + if (p == NULL) + return (NULL); + if (*p == '#') + goto again; + cp = any(p, "#\n"); + if (cp == NULL) + goto again; + *cp = '\0'; + net.n_name = p; + cp = any(p, " \t"); + if (cp == NULL) + goto again; + *cp++ = '\0'; + while (*cp == ' ' || *cp == '\t') + cp++; + p = any(cp, " \t"); + if (p != NULL) + *p++ = '\0'; + net.n_net = inet_network(cp); + net.n_addrtype = AF_INET; + q = net.n_aliases = net_aliases; + if (p != NULL) + cp = p; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &net_aliases[MAXALIASES - 1]) + *q++ = cp; + cp = any(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } + *q = NULL; + return (&net); +} + +static char * +any(cp, match) + register char *cp; + char *match; +{ + register char *mp, c; + + while (c = *cp) { + for (mp = match; *mp; mp++) + if (*mp == c) + return (cp); + cp++; + } + return ((char *)0); +} diff --git a/Win32/Src/getopt.c b/Win32/Src/getopt.c new file mode 100644 index 0000000..03c2086 --- /dev/null +++ b/Win32/Src/getopt.c @@ -0,0 +1,121 @@ +/* + * Copyright (c) 1987, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include + +int opterr = 1, /* if error message should be printed */ + optind = 1, /* index into parent argv vector */ + optopt, /* character checked for validity */ + optreset; /* reset getopt */ +char *optarg; /* argument associated with option */ + +#define BADCH (int)'?' +#define BADARG (int)':' +#define EMSG "" + +/* + * getopt -- + * Parse argc/argv argument vector. + */ +int +getopt(nargc, nargv, ostr) + int nargc; + char * const *nargv; + const char *ostr; +{ +#ifdef WIN32 + char *__progname="windump"; +#else + extern char *__progname; +#endif + static char *place = EMSG; /* option letter processing */ + char *oli; /* option letter list index */ + + if (optreset || !*place) { /* update scanning pointer */ + optreset = 0; + if (optind >= nargc || *(place = nargv[optind]) != '-') { + place = EMSG; + return (-1); + } + if (place[1] && *++place == '-') { /* found "--" */ + ++optind; + place = EMSG; + return (-1); + } + } /* option letter okay? */ + if ((optopt = (int)*place++) == (int)':' || + !(oli = strchr(ostr, optopt))) { + /* + * if the user didn't specify '-' as an option, + * assume it means -1. + */ + if (optopt == (int)'-') + return (-1); + if (!*place) + ++optind; + if (opterr && *ostr != ':') + (void)fprintf(stderr, + "%s: illegal option -- %c\n", __progname, optopt); + return (BADCH); + } + if (*++oli != ':') { /* don't need argument */ + optarg = NULL; + if (!*place) + ++optind; + } + else { /* need an argument */ + if (*place) /* no white space */ + optarg = place; + else if (nargc <= ++optind) { /* no arg */ + place = EMSG; + if (*ostr == ':') + return (BADARG); + if (opterr) + (void)fprintf(stderr, + "%s: option requires an argument -- %c\n", + __progname, optopt); + return (BADCH); + } + else /* white space */ + optarg = nargv[optind]; + place = EMSG; + ++optind; + } + return (optopt); /* dump back option letter */ +} diff --git a/Win32/Src/getservent.c b/Win32/Src/getservent.c new file mode 100644 index 0000000..61b8cb0 --- /dev/null +++ b/Win32/Src/getservent.c @@ -0,0 +1,125 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getservent.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include + +#include +#include +#include +#include +#include +#include + +#define MAXALIASES 35 + +static char SERVDB[] = _PATH_SERVICES; +static FILE *servf = NULL; +static char line[BUFSIZ+1]; +static struct servent serv; +static char *serv_aliases[MAXALIASES]; +int _serv_stayopen; + +void +setservent(f) + int f; +{ + if (servf == NULL) + servf = fopen(SERVDB, "r" ); + else + rewind(servf); + _serv_stayopen |= f; +} + +void +endservent() +{ + if (servf) { + fclose(servf); + servf = NULL; + } + _serv_stayopen = 0; +} + +struct servent * +getservent() +{ + char *p; + register char *cp, **q; + + if (servf == NULL && (servf = fopen(SERVDB, "r" )) == NULL) + return (NULL); +again: + if ((p = fgets(line, BUFSIZ, servf)) == NULL) + return (NULL); + if (*p == '#') + goto again; + cp = strpbrk(p, "#\n"); + if (cp == NULL) + goto again; + *cp = '\0'; + serv.s_name = p; + p = strpbrk(p, " \t"); + if (p == NULL) + goto again; + *p++ = '\0'; + while (*p == ' ' || *p == '\t') + p++; + cp = strpbrk(p, ",/"); + if (cp == NULL) + goto again; + *cp++ = '\0'; + serv.s_port = htons((u_short)atoi(p)); + serv.s_proto = cp; + q = serv.s_aliases = serv_aliases; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &serv_aliases[MAXALIASES - 1]) + *q++ = cp; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } + *q = NULL; + return (&serv); +} diff --git a/Win32/Src/inet_aton.c b/Win32/Src/inet_aton.c new file mode 100644 index 0000000..3da6667 --- /dev/null +++ b/Win32/Src/inet_aton.c @@ -0,0 +1,61 @@ +/* + * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* $Id: inet_aton.c,v 1.2 2003-11-15 23:24:06 guy Exp $ */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/Win32/Src/inet_aton.c,v 1.2 2003-11-15 23:24:06 guy Exp $"; +#endif + +#include +#include + +/* Minimal implementation of inet_aton. + * Cannot distinguish between failure and a local broadcast address. */ + +#ifndef INADDR_NONE +#define INADDR_NONE 0xffffffff +#endif + +int +inet_aton(const char *cp, struct in_addr *addr) +{ + addr->s_addr = inet_addr(cp); + return (addr->s_addr == INADDR_NONE) ? 0 : 1; +} diff --git a/Win32/Src/inet_net.c b/Win32/Src/inet_net.c new file mode 100644 index 0000000..5bbe391 --- /dev/null +++ b/Win32/Src/inet_net.c @@ -0,0 +1,101 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)inet_network.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ + +#include "inetprivate.h" + +/* + * Internet network address interpretation routine. + * The library routines call this routine to interpret + * network numbers. + */ +u_int32_t +inet_network(const char *cp) +{ + register u_long val, base, n; + register char c; + u_long parts[4], *pp = parts; + register int i; + +again: + /* + * Collect number up to ``.''. + * Values are specified as for C: + * 0x=hex, 0=octal, other=decimal. + */ + val = 0; base = 10; + /* + * The 4.4BSD version of this file also accepts 'x__' as a hexa + * number. I don't think this is correct. -- Uli + */ + if (*cp == '0') { + if (*++cp == 'x' || *cp == 'X') + base = 16, cp++; + else + base = 8; + } + while ((c = *cp)) { + if (isdigit(c)) { + val = (val * base) + (c - '0'); + cp++; + continue; + } + if (base == 16 && isxdigit(c)) { + val = (val << 4) + (c + 10 - (islower(c) ? 'a' : 'A')); + cp++; + continue; + } + break; + } + if (*cp == '.') { + if (pp >= parts + 4) + return (INADDR_NONE); + *pp++ = val, cp++; + goto again; + } + if (*cp && !isspace(*cp)) + return (INADDR_NONE); + *pp++ = val; + n = pp - parts; + if (n > 4) + return (INADDR_NONE); + for (val = 0, i = 0; i < (int)n; i++) { + val <<= 8; + val |= parts[i] & 0xff; + } + return (val); +} diff --git a/Win32/Src/inet_pton.c b/Win32/Src/inet_pton.c new file mode 100644 index 0000000..7933a4e --- /dev/null +++ b/Win32/Src/inet_pton.c @@ -0,0 +1,71 @@ +/* + * Copyright (c) 1999 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* $Id: inet_pton.c,v 1.3 2007-09-27 18:02:20 gianluca Exp $ */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/Win32/Src/inet_pton.c,v 1.3 2007-09-27 18:02:20 gianluca Exp $"; +#endif + +#include + +#ifdef WIN32 +#ifndef EAFNOSUPPORT +#define EAFNOSUPPORT 97 /* not present in errno.h provided with VC */ +#endif +#endif + +#ifdef __MINGW32__ +int* _errno(); +#define errno (*_errno()) +#endif /* __MINGW32__ */ + +#include + +int inet_aton(const char *cp, struct in_addr *addr); + +int +inet_pton(int af, const char *src, void *dst) +{ + if (af != AF_INET) { + errno = EAFNOSUPPORT; + return -1; + } + return inet_aton (src, dst); +} diff --git a/aclocal.m4 b/aclocal.m4 new file mode 100644 index 0000000..20db44f --- /dev/null +++ b/aclocal.m4 @@ -0,0 +1,1037 @@ +dnl @(#) $Header: /tcpdump/master/libpcap/aclocal.m4,v 1.93 2008-11-18 07:29:48 guy Exp $ (LBL) +dnl +dnl Copyright (c) 1995, 1996, 1997, 1998 +dnl The Regents of the University of California. All rights reserved. +dnl +dnl Redistribution and use in source and binary forms, with or without +dnl modification, are permitted provided that: (1) source code distributions +dnl retain the above copyright notice and this paragraph in its entirety, (2) +dnl distributions including binary code include the above copyright notice and +dnl this paragraph in its entirety in the documentation or other materials +dnl provided with the distribution, and (3) all advertising materials mentioning +dnl features or use of this software display the following acknowledgement: +dnl ``This product includes software developed by the University of California, +dnl Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +dnl the University nor the names of its contributors may be used to endorse +dnl or promote products derived from this software without specific prior +dnl written permission. +dnl THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +dnl WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +dnl MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +dnl +dnl LBL autoconf macros +dnl + +dnl +dnl Do whatever AC_LBL_C_INIT work is necessary before using AC_PROG_CC. +dnl +dnl It appears that newer versions of autoconf (2.64 and later) will, +dnl if you use AC_TRY_COMPILE in a macro, stick AC_PROG_CC at the +dnl beginning of the macro, even if the macro itself calls AC_PROG_CC. +dnl See the "Prerequisite Macros" and "Expanded Before Required" sections +dnl in the Autoconf documentation. +dnl +dnl This causes a steaming heap of fail in our case, as we were, in +dnl AC_LBL_C_INIT, doing the tests we now do in AC_LBL_C_INIT_BEFORE_CC, +dnl calling AC_PROG_CC, and then doing the tests we now do in +dnl AC_LBL_C_INIT. Now, we run AC_LBL_C_INIT_BEFORE_CC, AC_PROG_CC, +dnl and AC_LBL_C_INIT at the top level. +dnl +AC_DEFUN(AC_LBL_C_INIT_BEFORE_CC, + [AC_PREREQ(2.50) + AC_BEFORE([$0], [AC_LBL_C_INIT]) + AC_BEFORE([$0], [AC_PROG_CC]) + AC_BEFORE([$0], [AC_LBL_FIXINCLUDES]) + AC_BEFORE([$0], [AC_LBL_DEVEL]) + AC_ARG_WITH(gcc, [ --without-gcc don't use gcc]) + $1="-O" + $2="" + if test "${srcdir}" != "." ; then + $2="-I\$(srcdir)" + fi + if test "${CFLAGS+set}" = set; then + LBL_CFLAGS="$CFLAGS" + fi + if test -z "$CC" ; then + case "$host_os" in + + bsdi*) + AC_CHECK_PROG(SHLICC2, shlicc2, yes, no) + if test $SHLICC2 = yes ; then + CC=shlicc2 + export CC + fi + ;; + esac + fi + if test -z "$CC" -a "$with_gcc" = no ; then + CC=cc + export CC + fi +]) + +dnl +dnl Determine which compiler we're using (cc or gcc) +dnl If using gcc, determine the version number +dnl If using cc, require that it support ansi prototypes +dnl If using gcc, use -O2 (otherwise use -O) +dnl If using cc, explicitly specify /usr/local/include +dnl +dnl usage: +dnl +dnl AC_LBL_C_INIT(copt, incls) +dnl +dnl results: +dnl +dnl $1 (copt set) +dnl $2 (incls set) +dnl CC +dnl LDFLAGS +dnl ac_cv_lbl_gcc_vers +dnl LBL_CFLAGS +dnl +AC_DEFUN(AC_LBL_C_INIT, + [AC_PREREQ(2.50) + AC_BEFORE([$0], [AC_LBL_FIXINCLUDES]) + AC_BEFORE([$0], [AC_LBL_DEVEL]) + AC_BEFORE([$0], [AC_LBL_SHLIBS_INIT]) + if test "$GCC" = yes ; then + if test "$SHLICC2" = yes ; then + ac_cv_lbl_gcc_vers=2 + $1="-O2" + else + AC_MSG_CHECKING(gcc version) + AC_CACHE_VAL(ac_cv_lbl_gcc_vers, + ac_cv_lbl_gcc_vers=`$CC -v 2>&1 | \ + sed -e '/^gcc version /!d' \ + -e 's/^gcc version //' \ + -e 's/ .*//' -e 's/^[[[^0-9]]]*//' \ + -e 's/\..*//'`) + AC_MSG_RESULT($ac_cv_lbl_gcc_vers) + if test $ac_cv_lbl_gcc_vers -gt 1 ; then + $1="-O2" + fi + fi + else + AC_MSG_CHECKING(that $CC handles ansi prototypes) + AC_CACHE_VAL(ac_cv_lbl_cc_ansi_prototypes, + AC_TRY_COMPILE( + [#include ], + [int frob(int, char *)], + ac_cv_lbl_cc_ansi_prototypes=yes, + ac_cv_lbl_cc_ansi_prototypes=no)) + AC_MSG_RESULT($ac_cv_lbl_cc_ansi_prototypes) + if test $ac_cv_lbl_cc_ansi_prototypes = no ; then + case "$host_os" in + + hpux*) + AC_MSG_CHECKING(for HP-UX ansi compiler ($CC -Aa -D_HPUX_SOURCE)) + savedcflags="$CFLAGS" + CFLAGS="-Aa -D_HPUX_SOURCE $CFLAGS" + AC_CACHE_VAL(ac_cv_lbl_cc_hpux_cc_aa, + AC_TRY_COMPILE( + [#include ], + [int frob(int, char *)], + ac_cv_lbl_cc_hpux_cc_aa=yes, + ac_cv_lbl_cc_hpux_cc_aa=no)) + AC_MSG_RESULT($ac_cv_lbl_cc_hpux_cc_aa) + if test $ac_cv_lbl_cc_hpux_cc_aa = no ; then + AC_MSG_ERROR(see the INSTALL doc for more info) + fi + CFLAGS="$savedcflags" + $1="-Aa $$1" + AC_DEFINE(_HPUX_SOURCE,1,[needed on HP-UX]) + ;; + + osf*) + AC_MSG_CHECKING(for ansi mode in DEC compiler ($CC -std1)) + savedcflags="$CFLAGS" + CFLAGS="-std1" + AC_CACHE_VAL(ac_cv_lbl_cc_osf1_cc_std1, + AC_TRY_COMPILE( + [#include ], + [int frob(int, char *)], + ac_cv_lbl_cc_osf1_cc_std1=yes, + ac_cv_lbl_cc_osf1_cc_std1=no)) + AC_MSG_RESULT($ac_cv_lbl_cc_osf1_cc_std1) + if test $ac_cv_lbl_cc_osf1_cc_std1 = no ; then + AC_MSG_ERROR(see the INSTALL doc for more info) + fi + CFLAGS="$savedcflags" + $1="-std1 $$1" + ;; + + *) + AC_MSG_ERROR(see the INSTALL doc for more info) + ;; + esac + fi + $2="$$2 -I/usr/local/include" + LDFLAGS="$LDFLAGS -L/usr/local/lib" + + case "$host_os" in + + irix*) + $1="$$1 -xansi -signed -g3" + ;; + + osf*) + # + # Presumed to be DEC OSF/1, Digital UNIX, or + # Tru64 UNIX. + # + $1="$$1 -g3" + ;; + + ultrix*) + AC_MSG_CHECKING(that Ultrix $CC hacks const in prototypes) + AC_CACHE_VAL(ac_cv_lbl_cc_const_proto, + AC_TRY_COMPILE( + [#include ], + [struct a { int b; }; + void c(const struct a *)], + ac_cv_lbl_cc_const_proto=yes, + ac_cv_lbl_cc_const_proto=no)) + AC_MSG_RESULT($ac_cv_lbl_cc_const_proto) + if test $ac_cv_lbl_cc_const_proto = no ; then + AC_DEFINE(const,[], + [to handle Ultrix compilers that don't support const in prototypes]) + fi + ;; + esac + fi +]) + +dnl +dnl Determine what options are needed to build a shared library +dnl +dnl usage: +dnl +dnl AC_LBL_SHLIBS_INIT +dnl +dnl results: +dnl +dnl V_CCOPT (modified to build position-independent code) +dnl V_SHLIB_CMD +dnl V_SHLIB_OPT +dnl V_SONAME_OPT +dnl V_RPATH_OPT +dnl +AC_DEFUN(AC_LBL_SHLIBS_INIT, + [AC_PREREQ(2.50) + if test "$GCC" = yes ; then + # + # On platforms where we build a shared library: + # + # add options to generate position-independent code, + # if necessary (it's the default in AIX and Darwin/OS X); + # + # define option to set the soname of the shared library, + # if the OS supports that; + # + # add options to specify, at link time, a directory to + # add to the run-time search path, if that's necessary. + # + V_SHLIB_CMD="\$(CC)" + V_SHLIB_OPT="-shared" + case "$host_os" in + + aix*) + ;; + + freebsd*|netbsd*|openbsd*|dragonfly*|linux*|osf*) + # + # Platforms where the linker is the GNU linker + # or accepts command-line arguments like + # those the GNU linker accepts. + # + # Some instruction sets require -fPIC on some + # operating systems. Check for them. If you + # have a combination that requires it, add it + # here. + # + PIC_OPT=-fpic + case "$host_cpu" in + + sparc64*) + case "$host_os" in + + freebsd*) + PIC_OPT=-fPIC + ;; + esac + ;; + esac + V_CCOPT="$V_CCOPT $PIC_OPT" + V_SONAME_OPT="-Wl,-soname," + V_RPATH_OPT="-Wl,-rpath," + ;; + + hpux*) + V_CCOPT="$V_CCOPT -fpic" + # + # XXX - this assumes GCC is using the HP linker, + # rather than the GNU linker, and that the "+h" + # option is used on all HP-UX platforms, both .sl + # and .so. + # + V_SONAME_OPT="-Wl,+h," + # + # By default, directories specifed with -L + # are added to the run-time search path, so + # we don't add them in pcap-config. + # + ;; + + solaris*) + V_CCOPT="$V_CCOPT -fpic" + # + # XXX - this assumes GCC is using the Sun linker, + # rather than the GNU linker. + # + V_SONAME_OPT="-Wl,-h," + V_RPATH_OPT="-Wl,-R," + ;; + esac + else + # + # Set the appropriate compiler flags and, on platforms + # where we build a shared library: + # + # add options to generate position-independent code, + # if necessary (it's the default in Darwin/OS X); + # + # if we generate ".so" shared libraries, define the + # appropriate options for building the shared library; + # + # add options to specify, at link time, a directory to + # add to the run-time search path, if that's necessary. + # + # Note: spaces after V_SONAME_OPT are significant; on + # some platforms the soname is passed with a GCC-like + # "-Wl,-soname,{soname}" option, with the soname part + # of the option, while on other platforms the C compiler + # driver takes it as a regular option with the soname + # following the option. The same applies to V_RPATH_OPT. + # + case "$host_os" in + + aix*) + V_SHLIB_CMD="\$(CC)" + V_SHLIB_OPT="-G -bnoentry -bexpall" + ;; + + freebsd*|netbsd*|openbsd*|dragonfly*|linux*) + # + # "cc" is GCC. + # + V_CCOPT="$V_CCOPT -fpic" + V_SHLIB_CMD="\$(CC)" + V_SHLIB_OPT="-shared" + V_SONAME_OPT="-Wl,-soname," + V_RPATH_OPT="-Wl,-rpath," + ;; + + hpux*) + V_CCOPT="$V_CCOPT +z" + V_SHLIB_CMD="\$(LD)" + V_SHLIB_OPT="-b" + V_SONAME_OPT="+h " + # + # By default, directories specifed with -L + # are added to the run-time search path, so + # we don't add them in pcap-config. + # + ;; + + osf*) + # + # Presumed to be DEC OSF/1, Digital UNIX, or + # Tru64 UNIX. + # + V_SHLIB_CMD="\$(CC)" + V_SHLIB_OPT="-shared" + V_SONAME_OPT="-soname " + V_RPATH_OPT="-rpath " + ;; + + solaris*) + V_CCOPT="$V_CCOPT -Kpic" + V_SHLIB_CMD="\$(CC)" + V_SHLIB_OPT="-G" + V_SONAME_OPT="-h " + V_RPATH_OPT="-R" + ;; + esac + fi +]) + +# +# Try compiling a sample of the type of code that appears in +# gencode.c with "inline", "__inline__", and "__inline". +# +# Autoconf's AC_C_INLINE, at least in autoconf 2.13, isn't good enough, +# as it just tests whether a function returning "int" can be inlined; +# at least some versions of HP's C compiler can inline that, but can't +# inline a function that returns a struct pointer. +# +# Make sure we use the V_CCOPT flags, because some of those might +# disable inlining. +# +AC_DEFUN(AC_LBL_C_INLINE, + [AC_MSG_CHECKING(for inline) + save_CFLAGS="$CFLAGS" + CFLAGS="$V_CCOPT" + AC_CACHE_VAL(ac_cv_lbl_inline, [ + ac_cv_lbl_inline="" + ac_lbl_cc_inline=no + for ac_lbl_inline in inline __inline__ __inline + do + AC_TRY_COMPILE( + [#define inline $ac_lbl_inline + static inline struct iltest *foo(void); + struct iltest { + int iltest1; + int iltest2; + }; + + static inline struct iltest * + foo() + { + static struct iltest xxx; + + return &xxx; + }],,ac_lbl_cc_inline=yes,) + if test "$ac_lbl_cc_inline" = yes ; then + break; + fi + done + if test "$ac_lbl_cc_inline" = yes ; then + ac_cv_lbl_inline=$ac_lbl_inline + fi]) + CFLAGS="$save_CFLAGS" + if test ! -z "$ac_cv_lbl_inline" ; then + AC_MSG_RESULT($ac_cv_lbl_inline) + else + AC_MSG_RESULT(no) + fi + AC_DEFINE_UNQUOTED(inline, $ac_cv_lbl_inline, [Define as token for inline if inlining supported])]) + +dnl +dnl If using gcc, make sure we have ANSI ioctl definitions +dnl +dnl usage: +dnl +dnl AC_LBL_FIXINCLUDES +dnl +AC_DEFUN(AC_LBL_FIXINCLUDES, + [if test "$GCC" = yes ; then + AC_MSG_CHECKING(for ANSI ioctl definitions) + AC_CACHE_VAL(ac_cv_lbl_gcc_fixincludes, + AC_TRY_COMPILE( + [/* + * This generates a "duplicate case value" when fixincludes + * has not be run. + */ +# include +# include +# include +# ifdef HAVE_SYS_IOCCOM_H +# include +# endif], + [switch (0) { + case _IO('A', 1):; + case _IO('B', 1):; + }], + ac_cv_lbl_gcc_fixincludes=yes, + ac_cv_lbl_gcc_fixincludes=no)) + AC_MSG_RESULT($ac_cv_lbl_gcc_fixincludes) + if test $ac_cv_lbl_gcc_fixincludes = no ; then + # Don't cache failure + unset ac_cv_lbl_gcc_fixincludes + AC_MSG_ERROR(see the INSTALL for more info) + fi + fi]) + +dnl +dnl Check for flex, default to lex +dnl Require flex 2.4 or higher +dnl Check for bison, default to yacc +dnl Default to lex/yacc if both flex and bison are not available +dnl Define the yy prefix string if using flex and bison +dnl +dnl usage: +dnl +dnl AC_LBL_LEX_AND_YACC(lex, yacc, yyprefix) +dnl +dnl results: +dnl +dnl $1 (lex set) +dnl $2 (yacc appended) +dnl $3 (optional flex and bison -P prefix) +dnl +AC_DEFUN(AC_LBL_LEX_AND_YACC, + [AC_ARG_WITH(flex, [ --without-flex don't use flex]) + AC_ARG_WITH(bison, [ --without-bison don't use bison]) + if test "$with_flex" = no ; then + $1=lex + else + AC_CHECK_PROGS($1, flex, lex) + fi + if test "$$1" = flex ; then + # The -V flag was added in 2.4 + AC_MSG_CHECKING(for flex 2.4 or higher) + AC_CACHE_VAL(ac_cv_lbl_flex_v24, + if flex -V >/dev/null 2>&1; then + ac_cv_lbl_flex_v24=yes + else + ac_cv_lbl_flex_v24=no + fi) + AC_MSG_RESULT($ac_cv_lbl_flex_v24) + if test $ac_cv_lbl_flex_v24 = no ; then + s="2.4 or higher required" + AC_MSG_WARN(ignoring obsolete flex executable ($s)) + $1=lex + fi + fi + if test "$with_bison" = no ; then + $2=yacc + else + AC_CHECK_PROGS($2, bison, yacc) + fi + if test "$$2" = bison ; then + $2="$$2 -y" + fi + if test "$$1" != lex -a "$$2" = yacc -o "$$1" = lex -a "$$2" != yacc ; then + AC_MSG_WARN(don't have both flex and bison; reverting to lex/yacc) + $1=lex + $2=yacc + fi + if test "$$1" = flex -a -n "$3" ; then + $1="$$1 -P$3" + $2="$$2 -p $3" + fi]) + +dnl +dnl Checks to see if union wait is used with WEXITSTATUS() +dnl +dnl usage: +dnl +dnl AC_LBL_UNION_WAIT +dnl +dnl results: +dnl +dnl DECLWAITSTATUS (defined) +dnl +AC_DEFUN(AC_LBL_UNION_WAIT, + [AC_MSG_CHECKING(if union wait is used) + AC_CACHE_VAL(ac_cv_lbl_union_wait, + AC_TRY_COMPILE([ +# include +# include ], + [int status; + u_int i = WEXITSTATUS(status); + u_int j = waitpid(0, &status, 0);], + ac_cv_lbl_union_wait=no, + ac_cv_lbl_union_wait=yes)) + AC_MSG_RESULT($ac_cv_lbl_union_wait) + if test $ac_cv_lbl_union_wait = yes ; then + AC_DEFINE(DECLWAITSTATUS,union wait,[type for wait]) + else + AC_DEFINE(DECLWAITSTATUS,int,[type for wait]) + fi]) + +dnl +dnl Checks to see if the sockaddr struct has the 4.4 BSD sa_len member +dnl +dnl usage: +dnl +dnl AC_LBL_SOCKADDR_SA_LEN +dnl +dnl results: +dnl +dnl HAVE_SOCKADDR_SA_LEN (defined) +dnl +AC_DEFUN(AC_LBL_SOCKADDR_SA_LEN, + [AC_MSG_CHECKING(if sockaddr struct has the sa_len member) + AC_CACHE_VAL(ac_cv_lbl_sockaddr_has_sa_len, + AC_TRY_COMPILE([ +# include +# include ], + [u_int i = sizeof(((struct sockaddr *)0)->sa_len)], + ac_cv_lbl_sockaddr_has_sa_len=yes, + ac_cv_lbl_sockaddr_has_sa_len=no)) + AC_MSG_RESULT($ac_cv_lbl_sockaddr_has_sa_len) + if test $ac_cv_lbl_sockaddr_has_sa_len = yes ; then + AC_DEFINE(HAVE_SOCKADDR_SA_LEN,1,[if struct sockaddr has the sa_len member]) + fi]) + +dnl +dnl Checks to see if there's a sockaddr_storage structure +dnl +dnl usage: +dnl +dnl AC_LBL_SOCKADDR_STORAGE +dnl +dnl results: +dnl +dnl HAVE_SOCKADDR_STORAGE (defined) +dnl +AC_DEFUN(AC_LBL_SOCKADDR_STORAGE, + [AC_MSG_CHECKING(if sockaddr_storage struct exists) + AC_CACHE_VAL(ac_cv_lbl_has_sockaddr_storage, + AC_TRY_COMPILE([ +# include +# include ], + [u_int i = sizeof (struct sockaddr_storage)], + ac_cv_lbl_has_sockaddr_storage=yes, + ac_cv_lbl_has_sockaddr_storage=no)) + AC_MSG_RESULT($ac_cv_lbl_has_sockaddr_storage) + if test $ac_cv_lbl_has_sockaddr_storage = yes ; then + AC_DEFINE(HAVE_SOCKADDR_STORAGE,1,[if struct sockaddr_storage exists]) + fi]) + +dnl +dnl Checks to see if the dl_hp_ppa_info_t struct has the HP-UX 11.00 +dnl dl_module_id_1 member +dnl +dnl usage: +dnl +dnl AC_LBL_HP_PPA_INFO_T_DL_MODULE_ID_1 +dnl +dnl results: +dnl +dnl HAVE_HP_PPA_INFO_T_DL_MODULE_ID_1 (defined) +dnl +dnl NOTE: any compile failure means we conclude that it doesn't have +dnl that member, so if we don't have DLPI, don't have a +dnl header, or have one that doesn't declare a dl_hp_ppa_info_t type, +dnl we conclude it doesn't have that member (which is OK, as either we +dnl won't be using code that would use that member, or we wouldn't +dnl compile in any case). +dnl +AC_DEFUN(AC_LBL_HP_PPA_INFO_T_DL_MODULE_ID_1, + [AC_MSG_CHECKING(if dl_hp_ppa_info_t struct has dl_module_id_1 member) + AC_CACHE_VAL(ac_cv_lbl_dl_hp_ppa_info_t_has_dl_module_id_1, + AC_TRY_COMPILE([ +# include +# include +# include ], + [u_int i = sizeof(((dl_hp_ppa_info_t *)0)->dl_module_id_1)], + ac_cv_lbl_dl_hp_ppa_info_t_has_dl_module_id_1=yes, + ac_cv_lbl_dl_hp_ppa_info_t_has_dl_module_id_1=no)) + AC_MSG_RESULT($ac_cv_lbl_dl_hp_ppa_info_t_has_dl_module_id_1) + if test $ac_cv_lbl_dl_hp_ppa_info_t_has_dl_module_id_1 = yes ; then + AC_DEFINE(HAVE_HP_PPA_INFO_T_DL_MODULE_ID_1,1,[if ppa_info_t_dl_module_id exists]) + fi]) + +dnl +dnl Checks to see if -R is used +dnl +dnl usage: +dnl +dnl AC_LBL_HAVE_RUN_PATH +dnl +dnl results: +dnl +dnl ac_cv_lbl_have_run_path (yes or no) +dnl +AC_DEFUN(AC_LBL_HAVE_RUN_PATH, + [AC_MSG_CHECKING(for ${CC-cc} -R) + AC_CACHE_VAL(ac_cv_lbl_have_run_path, + [echo 'main(){}' > conftest.c + ${CC-cc} -o conftest conftest.c -R/a1/b2/c3 >conftest.out 2>&1 + if test ! -s conftest.out ; then + ac_cv_lbl_have_run_path=yes + else + ac_cv_lbl_have_run_path=no + fi + rm -f -r conftest*]) + AC_MSG_RESULT($ac_cv_lbl_have_run_path) + ]) + +dnl +dnl Checks to see if unaligned memory accesses fail +dnl +dnl usage: +dnl +dnl AC_LBL_UNALIGNED_ACCESS +dnl +dnl results: +dnl +dnl LBL_ALIGN (DEFINED) +dnl +AC_DEFUN(AC_LBL_UNALIGNED_ACCESS, + [AC_MSG_CHECKING(if unaligned accesses fail) + AC_CACHE_VAL(ac_cv_lbl_unaligned_fail, + [case "$host_cpu" in + + # + # These are CPU types where: + # + # the CPU faults on an unaligned access, but at least some + # OSes that support that CPU catch the fault and simulate + # the unaligned access (e.g., Alpha/{Digital,Tru64} UNIX) - + # the simulation is slow, so we don't want to use it; + # + # the CPU, I infer (from the old + # + # XXX: should also check that they don't do weird things (like on arm) + # + # comment) doesn't fault on unaligned accesses, but doesn't + # do a normal unaligned fetch, either (e.g., presumably, ARM); + # + # for whatever reason, the test program doesn't work + # (this has been claimed to be the case for several of those + # CPUs - I don't know what the problem is; the problem + # was reported as "the test program dumps core" for SuperH, + # but that's what the test program is *supposed* to do - + # it dumps core before it writes anything, so the test + # for an empty output file should find an empty output + # file and conclude that unaligned accesses don't work). + # + # This run-time test won't work if you're cross-compiling, so + # in order to support cross-compiling for a particular CPU, + # we have to wire in the list of CPU types anyway, as far as + # I know, so perhaps we should just have a set of CPUs on + # which we know it doesn't work, a set of CPUs on which we + # know it does work, and have the script just fail on other + # cpu types and update it when such a failure occurs. + # + alpha*|arm*|bfin*|hp*|mips*|sh*|sparc*|ia64|nv1) + ac_cv_lbl_unaligned_fail=yes + ;; + + *) + cat >conftest.c < +# include +# include + unsigned char a[[5]] = { 1, 2, 3, 4, 5 }; + main() { + unsigned int i; + pid_t pid; + int status; + /* avoid "core dumped" message */ + pid = fork(); + if (pid < 0) + exit(2); + if (pid > 0) { + /* parent */ + pid = waitpid(pid, &status, 0); + if (pid < 0) + exit(3); + exit(!WIFEXITED(status)); + } + /* child */ + i = *(unsigned int *)&a[[1]]; + printf("%d\n", i); + exit(0); + } +EOF + ${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS \ + conftest.c $LIBS >/dev/null 2>&1 + if test ! -x conftest ; then + dnl failed to compile for some reason + ac_cv_lbl_unaligned_fail=yes + else + ./conftest >conftest.out + if test ! -s conftest.out ; then + ac_cv_lbl_unaligned_fail=yes + else + ac_cv_lbl_unaligned_fail=no + fi + fi + rm -f -r conftest* core core.conftest + ;; + esac]) + AC_MSG_RESULT($ac_cv_lbl_unaligned_fail) + if test $ac_cv_lbl_unaligned_fail = yes ; then + AC_DEFINE(LBL_ALIGN,1,[if unaligned access fails]) + fi]) + +dnl +dnl If using gcc and the file .devel exists: +dnl Compile with -g (if supported) and -Wall +dnl If using gcc 2 or later, do extra prototype checking +dnl If an os prototype include exists, symlink os-proto.h to it +dnl +dnl usage: +dnl +dnl AC_LBL_DEVEL(copt) +dnl +dnl results: +dnl +dnl $1 (copt appended) +dnl HAVE_OS_PROTO_H (defined) +dnl os-proto.h (symlinked) +dnl +AC_DEFUN(AC_LBL_DEVEL, + [rm -f os-proto.h + if test "${LBL_CFLAGS+set}" = set; then + $1="$$1 ${LBL_CFLAGS}" + fi + if test -f .devel ; then + if test "$GCC" = yes ; then + if test "${LBL_CFLAGS+set}" != set; then + if test "$ac_cv_prog_cc_g" = yes ; then + $1="-g $$1" + fi + $1="$$1 -Wall" + if test $ac_cv_lbl_gcc_vers -gt 1 ; then + $1="$$1 -Wmissing-prototypes -Wstrict-prototypes" + fi + fi + else + case "$host_os" in + + irix6*) + V_CCOPT="$V_CCOPT -n32" + ;; + + *) + ;; + esac + fi + os=`echo $host_os | sed -e 's/\([[0-9]][[0-9]]*\)[[^0-9]].*$/\1/'` + name="lbl/os-$os.h" + if test -f $name ; then + ln -s $name os-proto.h + AC_DEFINE(HAVE_OS_PROTO_H, 1, + [if there's an os_proto.h for this platform, to use additional prototypes]) + else + AC_MSG_WARN(can't find $name) + fi + fi]) + +dnl +dnl Improved version of AC_CHECK_LIB +dnl +dnl Thanks to John Hawkinson (jhawk@mit.edu) +dnl +dnl usage: +dnl +dnl AC_LBL_CHECK_LIB(LIBRARY, FUNCTION [, ACTION-IF-FOUND [, +dnl ACTION-IF-NOT-FOUND [, OTHER-LIBRARIES]]]) +dnl +dnl results: +dnl +dnl LIBS +dnl +dnl XXX - "AC_LBL_LIBRARY_NET" was redone to use "AC_SEARCH_LIBS" +dnl rather than "AC_LBL_CHECK_LIB", so this isn't used any more. +dnl We keep it around for reference purposes in case it's ever +dnl useful in the future. +dnl + +define(AC_LBL_CHECK_LIB, +[AC_MSG_CHECKING([for $2 in -l$1]) +dnl Use a cache variable name containing the library, function +dnl name, and extra libraries to link with, because the test really is +dnl for library $1 defining function $2, when linked with potinal +dnl library $5, not just for library $1. Separate tests with the same +dnl $1 and different $2's or $5's may have different results. +ac_lib_var=`echo $1['_']$2['_']$5 | sed 'y%./+- %__p__%'` +AC_CACHE_VAL(ac_cv_lbl_lib_$ac_lib_var, +[ac_save_LIBS="$LIBS" +LIBS="-l$1 $5 $LIBS" +AC_TRY_LINK(dnl +ifelse([$2], [main], , dnl Avoid conflicting decl of main. +[/* Override any gcc2 internal prototype to avoid an error. */ +]ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus +extern "C" +#endif +])dnl +[/* We use char because int might match the return type of a gcc2 + builtin and then its argument prototype would still apply. */ +char $2(); +]), + [$2()], + eval "ac_cv_lbl_lib_$ac_lib_var=yes", + eval "ac_cv_lbl_lib_$ac_lib_var=no") +LIBS="$ac_save_LIBS" +])dnl +if eval "test \"`echo '$ac_cv_lbl_lib_'$ac_lib_var`\" = yes"; then + AC_MSG_RESULT(yes) + ifelse([$3], , +[changequote(, )dnl + ac_tr_lib=HAVE_LIB`echo $1 | sed -e 's/[^a-zA-Z0-9_]/_/g' \ + -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'` +changequote([, ])dnl + AC_DEFINE_UNQUOTED($ac_tr_lib) + LIBS="-l$1 $LIBS" +], [$3]) +else + AC_MSG_RESULT(no) +ifelse([$4], , , [$4 +])dnl +fi +]) + +dnl +dnl AC_LBL_LIBRARY_NET +dnl +dnl This test is for network applications that need socket() and +dnl gethostbyname() -ish functions. Under Solaris, those applications +dnl need to link with "-lsocket -lnsl". Under IRIX, they need to link +dnl with "-lnsl" but should *not* link with "-lsocket" because +dnl libsocket.a breaks a number of things (for instance: +dnl gethostbyname() under IRIX 5.2, and snoop sockets under most +dnl versions of IRIX). +dnl +dnl Unfortunately, many application developers are not aware of this, +dnl and mistakenly write tests that cause -lsocket to be used under +dnl IRIX. It is also easy to write tests that cause -lnsl to be used +dnl under operating systems where neither are necessary (or useful), +dnl such as SunOS 4.1.4, which uses -lnsl for TLI. +dnl +dnl This test exists so that every application developer does not test +dnl this in a different, and subtly broken fashion. + +dnl It has been argued that this test should be broken up into two +dnl seperate tests, one for the resolver libraries, and one for the +dnl libraries necessary for using Sockets API. Unfortunately, the two +dnl are carefully intertwined and allowing the autoconf user to use +dnl them independantly potentially results in unfortunate ordering +dnl dependancies -- as such, such component macros would have to +dnl carefully use indirection and be aware if the other components were +dnl executed. Since other autoconf macros do not go to this trouble, +dnl and almost no applications use sockets without the resolver, this +dnl complexity has not been implemented. +dnl +dnl The check for libresolv is in case you are attempting to link +dnl statically and happen to have a libresolv.a lying around (and no +dnl libnsl.a). +dnl +AC_DEFUN(AC_LBL_LIBRARY_NET, [ + # Most operating systems have gethostbyname() in the default searched + # libraries (i.e. libc): + # Some OSes (eg. Solaris) place it in libnsl + # Some strange OSes (SINIX) have it in libsocket: + AC_SEARCH_LIBS(gethostbyname, nsl socket resolv) + # Unfortunately libsocket sometimes depends on libnsl and + # AC_SEARCH_LIBS isn't up to the task of handling dependencies like this. + if test "$ac_cv_search_gethostbyname" = "no" + then + AC_CHECK_LIB(socket, gethostbyname, + LIBS="-lsocket -lnsl $LIBS", , -lnsl) + fi + AC_SEARCH_LIBS(socket, socket, , + AC_CHECK_LIB(socket, socket, LIBS="-lsocket -lnsl $LIBS", , -lnsl)) + # DLPI needs putmsg under HPUX so test for -lstr while we're at it + AC_SEARCH_LIBS(putmsg, str) + ]) + +dnl +dnl Test for __attribute__ +dnl + +AC_DEFUN(AC_C___ATTRIBUTE__, [ +AC_MSG_CHECKING(for __attribute__) +AC_CACHE_VAL(ac_cv___attribute__, [ +AC_COMPILE_IFELSE( + AC_LANG_SOURCE([[ +#include + +static void foo(void) __attribute__ ((noreturn)); + +static void +foo(void) +{ + exit(1); +} + +int +main(int argc, char **argv) +{ + foo(); +} + ]]), +ac_cv___attribute__=yes, +ac_cv___attribute__=no)]) +if test "$ac_cv___attribute__" = "yes"; then + AC_DEFINE(HAVE___ATTRIBUTE__, 1, [define if your compiler has __attribute__]) + V_DEFS="$V_DEFS -D_U_=\"__attribute__((unused))\"" +else + V_DEFS="$V_DEFS -D_U_=\"\"" +fi +AC_MSG_RESULT($ac_cv___attribute__) +]) + +dnl +dnl Checks to see if tpacket_stats is defined in linux/if_packet.h +dnl If so then pcap-linux.c can use this to report proper statistics. +dnl +dnl -Scott Barron +dnl +AC_DEFUN(AC_LBL_TPACKET_STATS, + [AC_MSG_CHECKING(if if_packet.h has tpacket_stats defined) + AC_CACHE_VAL(ac_cv_lbl_tpacket_stats, + AC_TRY_COMPILE([ +# include ], + [struct tpacket_stats stats], + ac_cv_lbl_tpacket_stats=yes, + ac_cv_lbl_tpacket_stats=no)) + AC_MSG_RESULT($ac_cv_lbl_tpacket_stats) + if test $ac_cv_lbl_tpacket_stats = yes; then + AC_DEFINE(HAVE_TPACKET_STATS,1,[if if_packet.h has tpacket_stats defined]) + fi]) + +dnl +dnl Checks to see if the tpacket_auxdata struct has a tp_vlan_tci member. +dnl +dnl usage: +dnl +dnl AC_LBL_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI +dnl +dnl results: +dnl +dnl HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI (defined) +dnl +dnl NOTE: any compile failure means we conclude that it doesn't have +dnl that member, so if we don't have tpacket_auxdata, we conclude it +dnl doesn't have that member (which is OK, as either we won't be using +dnl code that would use that member, or we wouldn't compile in any case). +dnl +AC_DEFUN(AC_LBL_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI, + [AC_MSG_CHECKING(if tpacket_auxdata struct has tp_vlan_tci member) + AC_CACHE_VAL(ac_cv_lbl_linux_tpacket_auxdata_tp_vlan_tci, + AC_TRY_COMPILE([ +# include +# include ], + [u_int i = sizeof(((struct tpacket_auxdata *)0)->tp_vlan_tci)], + ac_cv_lbl_linux_tpacket_auxdata_tp_vlan_tci=yes, + ac_cv_lbl_linux_tpacket_auxdata_tp_vlan_tci=no)) + AC_MSG_RESULT($ac_cv_lbl_linux_tpacket_auxdata_tp_vlan_tci) + if test $ac_cv_lbl_linux_tpacket_auxdata_tp_vlan_tci = yes ; then + HAVE_LINUX_TPACKET_AUXDATA=tp_vlan_tci + AC_SUBST(HAVE_LINUX_TPACKET_AUXDATA) + AC_DEFINE(HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI,1,[if tp_vlan_tci exists]) + fi]) + +dnl +dnl Checks to see if Solaris has the dl_passive_req_t struct defined +dnl in . +dnl +dnl usage: +dnl +dnl AC_LBL_DL_PASSIVE_REQ_T +dnl +dnl results: +dnl +dnl HAVE_DLPI_PASSIVE (defined) +dnl +AC_DEFUN(AC_LBL_DL_PASSIVE_REQ_T, + [AC_MSG_CHECKING(if dl_passive_req_t struct exists) + AC_CACHE_VAL(ac_cv_lbl_has_dl_passive_req_t, + AC_TRY_COMPILE([ +# include +# include ], + [u_int i = sizeof(dl_passive_req_t)], + ac_cv_lbl_has_dl_passive_req_t=yes, + ac_cv_lbl_has_dl_passive_req_t=no)) + AC_MSG_RESULT($ac_cv_lbl_has_dl_passive_req_t) + if test $ac_cv_lbl_has_dl_passive_req_t = yes ; then + AC_DEFINE(HAVE_DLPI_PASSIVE,1,[if passive_req_t primitive + exists]) + fi]) diff --git a/arcnet.h b/arcnet.h new file mode 100644 index 0000000..4f86043 --- /dev/null +++ b/arcnet.h @@ -0,0 +1,52 @@ +/* + * Copyright (c) 1982, 1986, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#) $Id: arcnet.h,v 1.2 2001-04-24 02:17:52 guy Exp $ (LBL) + * + * from: NetBSD: if_arc.h,v 1.13 1999/11/19 20:41:19 thorpej Exp + */ + +/* RFC 1051 */ +#define ARCTYPE_IP_OLD 240 /* IP protocol */ +#define ARCTYPE_ARP_OLD 241 /* address resolution protocol */ + +/* RFC 1201 */ +#define ARCTYPE_IP 212 /* IP protocol */ +#define ARCTYPE_ARP 213 /* address resolution protocol */ +#define ARCTYPE_REVARP 214 /* reverse addr resolution protocol */ + +#define ARCTYPE_ATALK 221 /* Appletalk */ +#define ARCTYPE_BANIAN 247 /* Banyan Vines */ +#define ARCTYPE_IPX 250 /* Novell IPX */ + +#define ARCTYPE_INET6 0xc4 /* IPng */ +#define ARCTYPE_DIAGNOSE 0x80 /* as per ANSI/ATA 878.1 */ diff --git a/atmuni31.h b/atmuni31.h new file mode 100644 index 0000000..880cc1a --- /dev/null +++ b/atmuni31.h @@ -0,0 +1,87 @@ +/* + * Copyright (c) 1997 Yen Yen Lim and North Dakota State University + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Yen Yen Lim and + North Dakota State University + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * @(#) $Header: /tcpdump/master/libpcap/atmuni31.h,v 1.3 2007-10-22 19:28:58 guy Exp $ (LBL) + */ + +/* Based on UNI3.1 standard by ATM Forum */ + +/* ATM traffic types based on VPI=0 and (the following VCI */ +#define VCI_PPC 0x05 /* Point-to-point signal msg */ +#define VCI_BCC 0x02 /* Broadcast signal msg */ +#define VCI_OAMF4SC 0x03 /* Segment OAM F4 flow cell */ +#define VCI_OAMF4EC 0x04 /* End-to-end OAM F4 flow cell */ +#define VCI_METAC 0x01 /* Meta signal msg */ +#define VCI_ILMIC 0x10 /* ILMI msg */ + +/* Q.2931 signalling messages */ +#define CALL_PROCEED 0x02 /* call proceeding */ +#define CONNECT 0x07 /* connect */ +#define CONNECT_ACK 0x0f /* connect_ack */ +#define SETUP 0x05 /* setup */ +#define RELEASE 0x4d /* release */ +#define RELEASE_DONE 0x5a /* release_done */ +#define RESTART 0x46 /* restart */ +#define RESTART_ACK 0x4e /* restart ack */ +#define STATUS 0x7d /* status */ +#define STATUS_ENQ 0x75 /* status ack */ +#define ADD_PARTY 0x80 /* add party */ +#define ADD_PARTY_ACK 0x81 /* add party ack */ +#define ADD_PARTY_REJ 0x82 /* add party rej */ +#define DROP_PARTY 0x83 /* drop party */ +#define DROP_PARTY_ACK 0x84 /* drop party ack */ + +/* Information Element Parameters in the signalling messages */ +#define CAUSE 0x08 /* cause */ +#define ENDPT_REF 0x54 /* endpoint reference */ +#define AAL_PARA 0x58 /* ATM adaptation layer parameters */ +#define TRAFF_DESCRIP 0x59 /* atm traffic descriptors */ +#define CONNECT_ID 0x5a /* connection identifier */ +#define QOS_PARA 0x5c /* quality of service parameters */ +#define B_HIGHER 0x5d /* broadband higher layer information */ +#define B_BEARER 0x5e /* broadband bearer capability */ +#define B_LOWER 0x5f /* broadband lower information */ +#define CALLING_PARTY 0x6c /* calling party number */ +#define CALLED_PARTY 0x70 /* called party nmber */ + +#define Q2931 0x09 + +/* Q.2931 signalling general messages format */ +#define PROTO_POS 0 /* offset of protocol discriminator */ +#define CALL_REF_POS 2 /* offset of call reference value */ +#define MSG_TYPE_POS 5 /* offset of message type */ +#define MSG_LEN_POS 7 /* offset of mesage length */ +#define IE_BEGIN_POS 9 /* offset of first information element */ + +/* format of signalling messages */ +#define TYPE_POS 0 +#define LEN_POS 2 +#define FIELD_BEGIN_POS 4 diff --git a/bpf/net/bpf_filter.c b/bpf/net/bpf_filter.c new file mode 100644 index 0000000..0c4fb00 --- /dev/null +++ b/bpf/net/bpf_filter.c @@ -0,0 +1,686 @@ +/*- + * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from the Stanford/CMU enet packet filter, + * (net/enet.c) distributed as part of 4.3BSD, and code contributed + * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence + * Berkeley Laboratory. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)bpf.c 7.5 (Berkeley) 7/15/91 + */ + +#if !(defined(lint) || defined(KERNEL) || defined(_KERNEL)) +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/bpf/net/bpf_filter.c,v 1.46 2008-01-02 04:16:46 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef WIN32 + +#include + +#else /* WIN32 */ + +#if HAVE_INTTYPES_H +#include +#elif HAVE_STDINT_H +#include +#endif +#ifdef HAVE_SYS_BITYPES_H +#include +#endif + +#include +#include +#include + +#define SOLARIS (defined(sun) && (defined(__SVR4) || defined(__svr4__))) +#if defined(__hpux) || SOLARIS +# include +# include +# define mbuf msgb +# define m_next b_cont +# define MLEN(m) ((m)->b_wptr - (m)->b_rptr) +# define mtod(m,t) ((t)(m)->b_rptr) +#else /* defined(__hpux) || SOLARIS */ +# define MLEN(m) ((m)->m_len) +#endif /* defined(__hpux) || SOLARIS */ + +#endif /* WIN32 */ + +#include + +#if !defined(KERNEL) && !defined(_KERNEL) +#include +#endif + +#define int32 bpf_int32 +#define u_int32 bpf_u_int32 + +#ifndef LBL_ALIGN +/* + * XXX - IA-64? If not, this probably won't work on Win64 IA-64 + * systems, unless LBL_ALIGN is defined elsewhere for them. + * XXX - SuperH? If not, this probably won't work on WinCE SuperH + * systems, unless LBL_ALIGN is defined elsewhere for them. + */ +#if defined(sparc) || defined(__sparc__) || defined(mips) || \ + defined(ibm032) || defined(__alpha) || defined(__hpux) || \ + defined(__arm__) +#define LBL_ALIGN +#endif +#endif + +#ifndef LBL_ALIGN +#ifndef WIN32 +#include +#endif + +#define EXTRACT_SHORT(p) ((u_short)ntohs(*(u_short *)p)) +#define EXTRACT_LONG(p) (ntohl(*(u_int32 *)p)) +#else +#define EXTRACT_SHORT(p)\ + ((u_short)\ + ((u_short)*((u_char *)p+0)<<8|\ + (u_short)*((u_char *)p+1)<<0)) +#define EXTRACT_LONG(p)\ + ((u_int32)*((u_char *)p+0)<<24|\ + (u_int32)*((u_char *)p+1)<<16|\ + (u_int32)*((u_char *)p+2)<<8|\ + (u_int32)*((u_char *)p+3)<<0) +#endif + +#if defined(KERNEL) || defined(_KERNEL) +# if !defined(__hpux) && !SOLARIS +#include +# endif +#define MINDEX(len, _m, _k) \ +{ \ + len = MLEN(m); \ + while ((_k) >= len) { \ + (_k) -= len; \ + (_m) = (_m)->m_next; \ + if ((_m) == 0) \ + return 0; \ + len = MLEN(m); \ + } \ +} + +static int +m_xword(m, k, err) + register struct mbuf *m; + register int k, *err; +{ + register int len; + register u_char *cp, *np; + register struct mbuf *m0; + + MINDEX(len, m, k); + cp = mtod(m, u_char *) + k; + if (len - k >= 4) { + *err = 0; + return EXTRACT_LONG(cp); + } + m0 = m->m_next; + if (m0 == 0 || MLEN(m0) + len - k < 4) + goto bad; + *err = 0; + np = mtod(m0, u_char *); + switch (len - k) { + + case 1: + return (cp[0] << 24) | (np[0] << 16) | (np[1] << 8) | np[2]; + + case 2: + return (cp[0] << 24) | (cp[1] << 16) | (np[0] << 8) | np[1]; + + default: + return (cp[0] << 24) | (cp[1] << 16) | (cp[2] << 8) | np[0]; + } + bad: + *err = 1; + return 0; +} + +static int +m_xhalf(m, k, err) + register struct mbuf *m; + register int k, *err; +{ + register int len; + register u_char *cp; + register struct mbuf *m0; + + MINDEX(len, m, k); + cp = mtod(m, u_char *) + k; + if (len - k >= 2) { + *err = 0; + return EXTRACT_SHORT(cp); + } + m0 = m->m_next; + if (m0 == 0) + goto bad; + *err = 0; + return (cp[0] << 8) | mtod(m0, u_char *)[0]; + bad: + *err = 1; + return 0; +} +#endif + +/* + * Execute the filter program starting at pc on the packet p + * wirelen is the length of the original packet + * buflen is the amount of data present + * For the kernel, p is assumed to be a pointer to an mbuf if buflen is 0, + * in all other cases, p is a pointer to a buffer and buflen is its size. + */ +u_int +bpf_filter(pc, p, wirelen, buflen) + register const struct bpf_insn *pc; + register const u_char *p; + u_int wirelen; + register u_int buflen; +{ + register u_int32 A, X; + register int k; + int32 mem[BPF_MEMWORDS]; +#if defined(KERNEL) || defined(_KERNEL) + struct mbuf *m, *n; + int merr, len; + + if (buflen == 0) { + m = (struct mbuf *)p; + p = mtod(m, u_char *); + buflen = MLEN(m); + } else + m = NULL; +#endif + + if (pc == 0) + /* + * No filter means accept all. + */ + return (u_int)-1; + A = 0; + X = 0; + --pc; + while (1) { + ++pc; + switch (pc->code) { + + default: +#if defined(KERNEL) || defined(_KERNEL) + return 0; +#else + abort(); +#endif + case BPF_RET|BPF_K: + return (u_int)pc->k; + + case BPF_RET|BPF_A: + return (u_int)A; + + case BPF_LD|BPF_W|BPF_ABS: + k = pc->k; + if (k + sizeof(int32) > buflen) { +#if defined(KERNEL) || defined(_KERNEL) + if (m == NULL) + return 0; + A = m_xword(m, k, &merr); + if (merr != 0) + return 0; + continue; +#else + return 0; +#endif + } + A = EXTRACT_LONG(&p[k]); + continue; + + case BPF_LD|BPF_H|BPF_ABS: + k = pc->k; + if (k + sizeof(short) > buflen) { +#if defined(KERNEL) || defined(_KERNEL) + if (m == NULL) + return 0; + A = m_xhalf(m, k, &merr); + if (merr != 0) + return 0; + continue; +#else + return 0; +#endif + } + A = EXTRACT_SHORT(&p[k]); + continue; + + case BPF_LD|BPF_B|BPF_ABS: + k = pc->k; + if (k >= buflen) { +#if defined(KERNEL) || defined(_KERNEL) + if (m == NULL) + return 0; + n = m; + MINDEX(len, n, k); + A = mtod(n, u_char *)[k]; + continue; +#else + return 0; +#endif + } + A = p[k]; + continue; + + case BPF_LD|BPF_W|BPF_LEN: + A = wirelen; + continue; + + case BPF_LDX|BPF_W|BPF_LEN: + X = wirelen; + continue; + + case BPF_LD|BPF_W|BPF_IND: + k = X + pc->k; + if (k + sizeof(int32) > buflen) { +#if defined(KERNEL) || defined(_KERNEL) + if (m == NULL) + return 0; + A = m_xword(m, k, &merr); + if (merr != 0) + return 0; + continue; +#else + return 0; +#endif + } + A = EXTRACT_LONG(&p[k]); + continue; + + case BPF_LD|BPF_H|BPF_IND: + k = X + pc->k; + if (k + sizeof(short) > buflen) { +#if defined(KERNEL) || defined(_KERNEL) + if (m == NULL) + return 0; + A = m_xhalf(m, k, &merr); + if (merr != 0) + return 0; + continue; +#else + return 0; +#endif + } + A = EXTRACT_SHORT(&p[k]); + continue; + + case BPF_LD|BPF_B|BPF_IND: + k = X + pc->k; + if (k >= buflen) { +#if defined(KERNEL) || defined(_KERNEL) + if (m == NULL) + return 0; + n = m; + MINDEX(len, n, k); + A = mtod(n, u_char *)[k]; + continue; +#else + return 0; +#endif + } + A = p[k]; + continue; + + case BPF_LDX|BPF_MSH|BPF_B: + k = pc->k; + if (k >= buflen) { +#if defined(KERNEL) || defined(_KERNEL) + if (m == NULL) + return 0; + n = m; + MINDEX(len, n, k); + X = (mtod(n, char *)[k] & 0xf) << 2; + continue; +#else + return 0; +#endif + } + X = (p[pc->k] & 0xf) << 2; + continue; + + case BPF_LD|BPF_IMM: + A = pc->k; + continue; + + case BPF_LDX|BPF_IMM: + X = pc->k; + continue; + + case BPF_LD|BPF_MEM: + A = mem[pc->k]; + continue; + + case BPF_LDX|BPF_MEM: + X = mem[pc->k]; + continue; + + case BPF_ST: + mem[pc->k] = A; + continue; + + case BPF_STX: + mem[pc->k] = X; + continue; + + case BPF_JMP|BPF_JA: +#if defined(KERNEL) || defined(_KERNEL) + /* + * No backward jumps allowed. + */ + pc += pc->k; +#else + /* + * XXX - we currently implement "ip6 protochain" + * with backward jumps, so sign-extend pc->k. + */ + pc += (bpf_int32)pc->k; +#endif + continue; + + case BPF_JMP|BPF_JGT|BPF_K: + pc += (A > pc->k) ? pc->jt : pc->jf; + continue; + + case BPF_JMP|BPF_JGE|BPF_K: + pc += (A >= pc->k) ? pc->jt : pc->jf; + continue; + + case BPF_JMP|BPF_JEQ|BPF_K: + pc += (A == pc->k) ? pc->jt : pc->jf; + continue; + + case BPF_JMP|BPF_JSET|BPF_K: + pc += (A & pc->k) ? pc->jt : pc->jf; + continue; + + case BPF_JMP|BPF_JGT|BPF_X: + pc += (A > X) ? pc->jt : pc->jf; + continue; + + case BPF_JMP|BPF_JGE|BPF_X: + pc += (A >= X) ? pc->jt : pc->jf; + continue; + + case BPF_JMP|BPF_JEQ|BPF_X: + pc += (A == X) ? pc->jt : pc->jf; + continue; + + case BPF_JMP|BPF_JSET|BPF_X: + pc += (A & X) ? pc->jt : pc->jf; + continue; + + case BPF_ALU|BPF_ADD|BPF_X: + A += X; + continue; + + case BPF_ALU|BPF_SUB|BPF_X: + A -= X; + continue; + + case BPF_ALU|BPF_MUL|BPF_X: + A *= X; + continue; + + case BPF_ALU|BPF_DIV|BPF_X: + if (X == 0) + return 0; + A /= X; + continue; + + case BPF_ALU|BPF_AND|BPF_X: + A &= X; + continue; + + case BPF_ALU|BPF_OR|BPF_X: + A |= X; + continue; + + case BPF_ALU|BPF_LSH|BPF_X: + A <<= X; + continue; + + case BPF_ALU|BPF_RSH|BPF_X: + A >>= X; + continue; + + case BPF_ALU|BPF_ADD|BPF_K: + A += pc->k; + continue; + + case BPF_ALU|BPF_SUB|BPF_K: + A -= pc->k; + continue; + + case BPF_ALU|BPF_MUL|BPF_K: + A *= pc->k; + continue; + + case BPF_ALU|BPF_DIV|BPF_K: + A /= pc->k; + continue; + + case BPF_ALU|BPF_AND|BPF_K: + A &= pc->k; + continue; + + case BPF_ALU|BPF_OR|BPF_K: + A |= pc->k; + continue; + + case BPF_ALU|BPF_LSH|BPF_K: + A <<= pc->k; + continue; + + case BPF_ALU|BPF_RSH|BPF_K: + A >>= pc->k; + continue; + + case BPF_ALU|BPF_NEG: + A = -A; + continue; + + case BPF_MISC|BPF_TAX: + X = A; + continue; + + case BPF_MISC|BPF_TXA: + A = X; + continue; + } + } +} + +/* + * Return true if the 'fcode' is a valid filter program. + * The constraints are that each jump be forward and to a valid + * code, that memory accesses are within valid ranges (to the + * extent that this can be checked statically; loads of packet + * data have to be, and are, also checked at run time), and that + * the code terminates with either an accept or reject. + * + * The kernel needs to be able to verify an application's filter code. + * Otherwise, a bogus program could easily crash the system. + */ +int +bpf_validate(f, len) + const struct bpf_insn *f; + int len; +{ + u_int i, from; + const struct bpf_insn *p; + + if (len < 1) + return 0; + /* + * There's no maximum program length in userland. + */ +#if defined(KERNEL) || defined(_KERNEL) + if (len > BPF_MAXINSNS) + return 0; +#endif + + for (i = 0; i < len; ++i) { + p = &f[i]; + switch (BPF_CLASS(p->code)) { + /* + * Check that memory operations use valid addresses. + */ + case BPF_LD: + case BPF_LDX: + switch (BPF_MODE(p->code)) { + case BPF_IMM: + break; + case BPF_ABS: + case BPF_IND: + case BPF_MSH: + /* + * There's no maximum packet data size + * in userland. The runtime packet length + * check suffices. + */ +#if defined(KERNEL) || defined(_KERNEL) + /* + * More strict check with actual packet length + * is done runtime. + */ + if (p->k >= bpf_maxbufsize) + return 0; +#endif + break; + case BPF_MEM: + if (p->k >= BPF_MEMWORDS) + return 0; + break; + case BPF_LEN: + break; + default: + return 0; + } + break; + case BPF_ST: + case BPF_STX: + if (p->k >= BPF_MEMWORDS) + return 0; + break; + case BPF_ALU: + switch (BPF_OP(p->code)) { + case BPF_ADD: + case BPF_SUB: + case BPF_MUL: + case BPF_OR: + case BPF_AND: + case BPF_LSH: + case BPF_RSH: + case BPF_NEG: + break; + case BPF_DIV: + /* + * Check for constant division by 0. + */ + if (BPF_SRC(p->code) == BPF_K && p->k == 0) + return 0; + break; + default: + return 0; + } + break; + case BPF_JMP: + /* + * Check that jumps are within the code block, + * and that unconditional branches don't go + * backwards as a result of an overflow. + * Unconditional branches have a 32-bit offset, + * so they could overflow; we check to make + * sure they don't. Conditional branches have + * an 8-bit offset, and the from address is <= + * BPF_MAXINSNS, and we assume that BPF_MAXINSNS + * is sufficiently small that adding 255 to it + * won't overflow. + * + * We know that len is <= BPF_MAXINSNS, and we + * assume that BPF_MAXINSNS is < the maximum size + * of a u_int, so that i + 1 doesn't overflow. + * + * For userland, we don't know that the from + * or len are <= BPF_MAXINSNS, but we know that + * from <= len, and, except on a 64-bit system, + * it's unlikely that len, if it truly reflects + * the size of the program we've been handed, + * will be anywhere near the maximum size of + * a u_int. We also don't check for backward + * branches, as we currently support them in + * userland for the protochain operation. + */ + from = i + 1; + switch (BPF_OP(p->code)) { + case BPF_JA: +#if defined(KERNEL) || defined(_KERNEL) + if (from + p->k < from || from + p->k >= len) +#else + if (from + p->k >= len) +#endif + return 0; + break; + case BPF_JEQ: + case BPF_JGT: + case BPF_JGE: + case BPF_JSET: + if (from + p->jt >= len || from + p->jf >= len) + return 0; + break; + default: + return 0; + } + break; + case BPF_RET: + break; + case BPF_MISC: + break; + default: + return 0; + } + } + return BPF_CLASS(f[len - 1].code) == BPF_RET; +} diff --git a/bpf_dump.c b/bpf_dump.c new file mode 100644 index 0000000..e4ff4a2 --- /dev/null +++ b/bpf_dump.c @@ -0,0 +1,62 @@ +/* + * Copyright (c) 1992, 1993, 1994, 1995, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/bpf_dump.c,v 1.15 2008-01-02 04:16:46 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include + +void +bpf_dump(const struct bpf_program *p, int option) +{ + const struct bpf_insn *insn; + int i; + int n = p->bf_len; + + insn = p->bf_insns; + if (option > 2) { + printf("%d\n", n); + for (i = 0; i < n; ++insn, ++i) { + printf("%u %u %u %u\n", insn->code, + insn->jt, insn->jf, insn->k); + } + return ; + } + if (option > 1) { + for (i = 0; i < n; ++insn, ++i) + printf("{ 0x%x, %d, %d, 0x%08x },\n", + insn->code, insn->jt, insn->jf, insn->k); + return; + } + for (i = 0; i < n; ++insn, ++i) { +#ifdef BDEBUG + extern int bids[]; + printf(bids[i] > 0 ? "[%02d]" : " -- ", bids[i] - 1); +#endif + puts(bpf_image(insn, i)); + } +} diff --git a/bpf_image.c b/bpf_image.c new file mode 100644 index 0000000..e2f1a77 --- /dev/null +++ b/bpf_image.c @@ -0,0 +1,302 @@ +/* + * Copyright (c) 1990, 1991, 1992, 1994, 1995, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/bpf_image.c,v 1.28 2008-01-02 04:16:46 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef WIN32 +#include +#else /* WIN32 */ +#if HAVE_INTTYPES_H +#include +#elif HAVE_STDINT_H +#include +#endif +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +#include +#endif /* WIN32 */ + +#include +#include + +#include "pcap-int.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +char * +bpf_image(p, n) + const struct bpf_insn *p; + int n; +{ + int v; + const char *fmt, *op; + static char image[256]; + char operand[64]; + + v = p->k; + switch (p->code) { + + default: + op = "unimp"; + fmt = "0x%x"; + v = p->code; + break; + + case BPF_RET|BPF_K: + op = "ret"; + fmt = "#%d"; + break; + + case BPF_RET|BPF_A: + op = "ret"; + fmt = ""; + break; + + case BPF_LD|BPF_W|BPF_ABS: + op = "ld"; + fmt = "[%d]"; + break; + + case BPF_LD|BPF_H|BPF_ABS: + op = "ldh"; + fmt = "[%d]"; + break; + + case BPF_LD|BPF_B|BPF_ABS: + op = "ldb"; + fmt = "[%d]"; + break; + + case BPF_LD|BPF_W|BPF_LEN: + op = "ld"; + fmt = "#pktlen"; + break; + + case BPF_LD|BPF_W|BPF_IND: + op = "ld"; + fmt = "[x + %d]"; + break; + + case BPF_LD|BPF_H|BPF_IND: + op = "ldh"; + fmt = "[x + %d]"; + break; + + case BPF_LD|BPF_B|BPF_IND: + op = "ldb"; + fmt = "[x + %d]"; + break; + + case BPF_LD|BPF_IMM: + op = "ld"; + fmt = "#0x%x"; + break; + + case BPF_LDX|BPF_IMM: + op = "ldx"; + fmt = "#0x%x"; + break; + + case BPF_LDX|BPF_MSH|BPF_B: + op = "ldxb"; + fmt = "4*([%d]&0xf)"; + break; + + case BPF_LD|BPF_MEM: + op = "ld"; + fmt = "M[%d]"; + break; + + case BPF_LDX|BPF_MEM: + op = "ldx"; + fmt = "M[%d]"; + break; + + case BPF_ST: + op = "st"; + fmt = "M[%d]"; + break; + + case BPF_STX: + op = "stx"; + fmt = "M[%d]"; + break; + + case BPF_JMP|BPF_JA: + op = "ja"; + fmt = "%d"; + v = n + 1 + p->k; + break; + + case BPF_JMP|BPF_JGT|BPF_K: + op = "jgt"; + fmt = "#0x%x"; + break; + + case BPF_JMP|BPF_JGE|BPF_K: + op = "jge"; + fmt = "#0x%x"; + break; + + case BPF_JMP|BPF_JEQ|BPF_K: + op = "jeq"; + fmt = "#0x%x"; + break; + + case BPF_JMP|BPF_JSET|BPF_K: + op = "jset"; + fmt = "#0x%x"; + break; + + case BPF_JMP|BPF_JGT|BPF_X: + op = "jgt"; + fmt = "x"; + break; + + case BPF_JMP|BPF_JGE|BPF_X: + op = "jge"; + fmt = "x"; + break; + + case BPF_JMP|BPF_JEQ|BPF_X: + op = "jeq"; + fmt = "x"; + break; + + case BPF_JMP|BPF_JSET|BPF_X: + op = "jset"; + fmt = "x"; + break; + + case BPF_ALU|BPF_ADD|BPF_X: + op = "add"; + fmt = "x"; + break; + + case BPF_ALU|BPF_SUB|BPF_X: + op = "sub"; + fmt = "x"; + break; + + case BPF_ALU|BPF_MUL|BPF_X: + op = "mul"; + fmt = "x"; + break; + + case BPF_ALU|BPF_DIV|BPF_X: + op = "div"; + fmt = "x"; + break; + + case BPF_ALU|BPF_AND|BPF_X: + op = "and"; + fmt = "x"; + break; + + case BPF_ALU|BPF_OR|BPF_X: + op = "or"; + fmt = "x"; + break; + + case BPF_ALU|BPF_LSH|BPF_X: + op = "lsh"; + fmt = "x"; + break; + + case BPF_ALU|BPF_RSH|BPF_X: + op = "rsh"; + fmt = "x"; + break; + + case BPF_ALU|BPF_ADD|BPF_K: + op = "add"; + fmt = "#%d"; + break; + + case BPF_ALU|BPF_SUB|BPF_K: + op = "sub"; + fmt = "#%d"; + break; + + case BPF_ALU|BPF_MUL|BPF_K: + op = "mul"; + fmt = "#%d"; + break; + + case BPF_ALU|BPF_DIV|BPF_K: + op = "div"; + fmt = "#%d"; + break; + + case BPF_ALU|BPF_AND|BPF_K: + op = "and"; + fmt = "#0x%x"; + break; + + case BPF_ALU|BPF_OR|BPF_K: + op = "or"; + fmt = "#0x%x"; + break; + + case BPF_ALU|BPF_LSH|BPF_K: + op = "lsh"; + fmt = "#%d"; + break; + + case BPF_ALU|BPF_RSH|BPF_K: + op = "rsh"; + fmt = "#%d"; + break; + + case BPF_ALU|BPF_NEG: + op = "neg"; + fmt = ""; + break; + + case BPF_MISC|BPF_TAX: + op = "tax"; + fmt = ""; + break; + + case BPF_MISC|BPF_TXA: + op = "txa"; + fmt = ""; + break; + } + (void)snprintf(operand, sizeof operand, fmt, v); + (void)snprintf(image, sizeof image, + (BPF_CLASS(p->code) == BPF_JMP && + BPF_OP(p->code) != BPF_JA) ? + "(%03d) %-8s %-16s jt %d\tjf %d" + : "(%03d) %-8s %s", + n, op, operand, n + 1 + p->jt, n + 1 + p->jf); + return image; +} diff --git a/chmod_bpf b/chmod_bpf new file mode 100755 index 0000000..0a30d99 --- /dev/null +++ b/chmod_bpf @@ -0,0 +1,19 @@ +#! /bin/sh + +# +# Unfortunately, Mac OS X's devfs is based on the old FreeBSD +# one, not the current one, so there's no way to configure it +# to create BPF devices with particular owners or groups. +# This startup item will make it owned by the admin group, +# with permissions rw-rw----, so that anybody in the admin +# group can use programs that capture or send raw packets. +# +# Change this as appropriate for your site, e.g. to make +# it owned by a particular user without changing the permissions, +# so only that user and the super-user can capture or send raw +# packets, or give it the permissions rw-r-----, so that +# only the super-user can send raw packets but anybody in the +# admin group can capture packets. +# +chgrp admin /dev/bpf* +chmod g+rw /dev/bpf* diff --git a/config.guess b/config.guess new file mode 100755 index 0000000..c2246a4 --- /dev/null +++ b/config.guess @@ -0,0 +1,1502 @@ +#! /bin/sh +# Attempt to guess a canonical system name. +# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, +# 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 +# Free Software Foundation, Inc. + +timestamp='2009-12-30' + +# This file is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA +# 02110-1301, USA. +# +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program that contains a +# configuration script generated by Autoconf, you may include it under +# the same distribution terms that you use for the rest of that program. + + +# Originally written by Per Bothner. Please send patches (context +# diff format) to and include a ChangeLog +# entry. +# +# This script attempts to guess a canonical system name similar to +# config.sub. If it succeeds, it prints the system name on stdout, and +# exits with 0. Otherwise, it exits with 1. +# +# You can get the latest version of this script from: +# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD + +me=`echo "$0" | sed -e 's,.*/,,'` + +usage="\ +Usage: $0 [OPTION] + +Output the configuration name of the system \`$me' is run on. + +Operation modes: + -h, --help print this help, then exit + -t, --time-stamp print date of last modification, then exit + -v, --version print version number, then exit + +Report bugs and patches to ." + +version="\ +GNU config.guess ($timestamp) + +Originally written by Per Bothner. +Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, +2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free +Software Foundation, Inc. + +This is free software; see the source for copying conditions. There is NO +warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." + +help=" +Try \`$me --help' for more information." + +# Parse command line +while test $# -gt 0 ; do + case $1 in + --time-stamp | --time* | -t ) + echo "$timestamp" ; exit ;; + --version | -v ) + echo "$version" ; exit ;; + --help | --h* | -h ) + echo "$usage"; exit ;; + -- ) # Stop option processing + shift; break ;; + - ) # Use stdin as input. + break ;; + -* ) + echo "$me: invalid option $1$help" >&2 + exit 1 ;; + * ) + break ;; + esac +done + +if test $# != 0; then + echo "$me: too many arguments$help" >&2 + exit 1 +fi + +trap 'exit 1' 1 2 15 + +# CC_FOR_BUILD -- compiler used by this script. Note that the use of a +# compiler to aid in system detection is discouraged as it requires +# temporary files to be created and, as you can see below, it is a +# headache to deal with in a portable fashion. + +# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still +# use `HOST_CC' if defined, but it is deprecated. + +# Portable tmp directory creation inspired by the Autoconf team. + +set_cc_for_build=' +trap "exitcode=\$?; (rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null) && exit \$exitcode" 0 ; +trap "rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null; exit 1" 1 2 13 15 ; +: ${TMPDIR=/tmp} ; + { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } || + { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir $tmp) ; } || + { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir $tmp) && echo "Warning: creating insecure temp directory" >&2 ; } || + { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } ; +dummy=$tmp/dummy ; +tmpfiles="$dummy.c $dummy.o $dummy.rel $dummy" ; +case $CC_FOR_BUILD,$HOST_CC,$CC in + ,,) echo "int x;" > $dummy.c ; + for c in cc gcc c89 c99 ; do + if ($c -c -o $dummy.o $dummy.c) >/dev/null 2>&1 ; then + CC_FOR_BUILD="$c"; break ; + fi ; + done ; + if test x"$CC_FOR_BUILD" = x ; then + CC_FOR_BUILD=no_compiler_found ; + fi + ;; + ,,*) CC_FOR_BUILD=$CC ;; + ,*,*) CC_FOR_BUILD=$HOST_CC ;; +esac ; set_cc_for_build= ;' + +# This is needed to find uname on a Pyramid OSx when run in the BSD universe. +# (ghazi@noc.rutgers.edu 1994-08-24) +if (test -f /.attbin/uname) >/dev/null 2>&1 ; then + PATH=$PATH:/.attbin ; export PATH +fi + +UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown +UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown +UNAME_SYSTEM=`(uname -s) 2>/dev/null` || UNAME_SYSTEM=unknown +UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown + +# Note: order is significant - the case branches are not exclusive. + +case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in + *:NetBSD:*:*) + # NetBSD (nbsd) targets should (where applicable) match one or + # more of the tupples: *-*-netbsdelf*, *-*-netbsdaout*, + # *-*-netbsdecoff* and *-*-netbsd*. For targets that recently + # switched to ELF, *-*-netbsd* would select the old + # object file format. This provides both forward + # compatibility and a consistent mechanism for selecting the + # object file format. + # + # Note: NetBSD doesn't particularly care about the vendor + # portion of the name. We always set it to "unknown". + sysctl="sysctl -n hw.machine_arch" + UNAME_MACHINE_ARCH=`(/sbin/$sysctl 2>/dev/null || \ + /usr/sbin/$sysctl 2>/dev/null || echo unknown)` + case "${UNAME_MACHINE_ARCH}" in + armeb) machine=armeb-unknown ;; + arm*) machine=arm-unknown ;; + sh3el) machine=shl-unknown ;; + sh3eb) machine=sh-unknown ;; + sh5el) machine=sh5le-unknown ;; + *) machine=${UNAME_MACHINE_ARCH}-unknown ;; + esac + # The Operating System including object format, if it has switched + # to ELF recently, or will in the future. + case "${UNAME_MACHINE_ARCH}" in + arm*|i386|m68k|ns32k|sh3*|sparc|vax) + eval $set_cc_for_build + if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \ + | grep -q __ELF__ + then + # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout). + # Return netbsd for either. FIX? + os=netbsd + else + os=netbsdelf + fi + ;; + *) + os=netbsd + ;; + esac + # The OS release + # Debian GNU/NetBSD machines have a different userland, and + # thus, need a distinct triplet. However, they do not need + # kernel version information, so it can be replaced with a + # suitable tag, in the style of linux-gnu. + case "${UNAME_VERSION}" in + Debian*) + release='-gnu' + ;; + *) + release=`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'` + ;; + esac + # Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM: + # contains redundant information, the shorter form: + # CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used. + echo "${machine}-${os}${release}" + exit ;; + *:OpenBSD:*:*) + UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'` + echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE} + exit ;; + *:ekkoBSD:*:*) + echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE} + exit ;; + *:SolidBSD:*:*) + echo ${UNAME_MACHINE}-unknown-solidbsd${UNAME_RELEASE} + exit ;; + macppc:MirBSD:*:*) + echo powerpc-unknown-mirbsd${UNAME_RELEASE} + exit ;; + *:MirBSD:*:*) + echo ${UNAME_MACHINE}-unknown-mirbsd${UNAME_RELEASE} + exit ;; + alpha:OSF1:*:*) + case $UNAME_RELEASE in + *4.0) + UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'` + ;; + *5.*) + UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'` + ;; + esac + # According to Compaq, /usr/sbin/psrinfo has been available on + # OSF/1 and Tru64 systems produced since 1995. I hope that + # covers most systems running today. This code pipes the CPU + # types through head -n 1, so we only detect the type of CPU 0. + ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^ The alpha \(.*\) processor.*$/\1/p' | head -n 1` + case "$ALPHA_CPU_TYPE" in + "EV4 (21064)") + UNAME_MACHINE="alpha" ;; + "EV4.5 (21064)") + UNAME_MACHINE="alpha" ;; + "LCA4 (21066/21068)") + UNAME_MACHINE="alpha" ;; + "EV5 (21164)") + UNAME_MACHINE="alphaev5" ;; + "EV5.6 (21164A)") + UNAME_MACHINE="alphaev56" ;; + "EV5.6 (21164PC)") + UNAME_MACHINE="alphapca56" ;; + "EV5.7 (21164PC)") + UNAME_MACHINE="alphapca57" ;; + "EV6 (21264)") + UNAME_MACHINE="alphaev6" ;; + "EV6.7 (21264A)") + UNAME_MACHINE="alphaev67" ;; + "EV6.8CB (21264C)") + UNAME_MACHINE="alphaev68" ;; + "EV6.8AL (21264B)") + UNAME_MACHINE="alphaev68" ;; + "EV6.8CX (21264D)") + UNAME_MACHINE="alphaev68" ;; + "EV6.9A (21264/EV69A)") + UNAME_MACHINE="alphaev69" ;; + "EV7 (21364)") + UNAME_MACHINE="alphaev7" ;; + "EV7.9 (21364A)") + UNAME_MACHINE="alphaev79" ;; + esac + # A Pn.n version is a patched version. + # A Vn.n version is a released version. + # A Tn.n version is a released field test version. + # A Xn.n version is an unreleased experimental baselevel. + # 1.2 uses "1.2" for uname -r. + echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'` + exit ;; + Alpha\ *:Windows_NT*:*) + # How do we know it's Interix rather than the generic POSIX subsystem? + # Should we change UNAME_MACHINE based on the output of uname instead + # of the specific Alpha model? + echo alpha-pc-interix + exit ;; + 21064:Windows_NT:50:3) + echo alpha-dec-winnt3.5 + exit ;; + Amiga*:UNIX_System_V:4.0:*) + echo m68k-unknown-sysv4 + exit ;; + *:[Aa]miga[Oo][Ss]:*:*) + echo ${UNAME_MACHINE}-unknown-amigaos + exit ;; + *:[Mm]orph[Oo][Ss]:*:*) + echo ${UNAME_MACHINE}-unknown-morphos + exit ;; + *:OS/390:*:*) + echo i370-ibm-openedition + exit ;; + *:z/VM:*:*) + echo s390-ibm-zvmoe + exit ;; + *:OS400:*:*) + echo powerpc-ibm-os400 + exit ;; + arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*) + echo arm-acorn-riscix${UNAME_RELEASE} + exit ;; + arm:riscos:*:*|arm:RISCOS:*:*) + echo arm-unknown-riscos + exit ;; + SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*) + echo hppa1.1-hitachi-hiuxmpp + exit ;; + Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*) + # akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE. + if test "`(/bin/universe) 2>/dev/null`" = att ; then + echo pyramid-pyramid-sysv3 + else + echo pyramid-pyramid-bsd + fi + exit ;; + NILE*:*:*:dcosx) + echo pyramid-pyramid-svr4 + exit ;; + DRS?6000:unix:4.0:6*) + echo sparc-icl-nx6 + exit ;; + DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*) + case `/usr/bin/uname -p` in + sparc) echo sparc-icl-nx7; exit ;; + esac ;; + s390x:SunOS:*:*) + echo ${UNAME_MACHINE}-ibm-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` + exit ;; + sun4H:SunOS:5.*:*) + echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` + exit ;; + sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*) + echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` + exit ;; + i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*) + echo i386-pc-auroraux${UNAME_RELEASE} + exit ;; + i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*) + eval $set_cc_for_build + SUN_ARCH="i386" + # If there is a compiler, see if it is configured for 64-bit objects. + # Note that the Sun cc does not turn __LP64__ into 1 like gcc does. + # This test works for both compilers. + if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then + if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \ + (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \ + grep IS_64BIT_ARCH >/dev/null + then + SUN_ARCH="x86_64" + fi + fi + echo ${SUN_ARCH}-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` + exit ;; + sun4*:SunOS:6*:*) + # According to config.sub, this is the proper way to canonicalize + # SunOS6. Hard to guess exactly what SunOS6 will be like, but + # it's likely to be more like Solaris than SunOS4. + echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` + exit ;; + sun4*:SunOS:*:*) + case "`/usr/bin/arch -k`" in + Series*|S4*) + UNAME_RELEASE=`uname -v` + ;; + esac + # Japanese Language versions have a version number like `4.1.3-JL'. + echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'` + exit ;; + sun3*:SunOS:*:*) + echo m68k-sun-sunos${UNAME_RELEASE} + exit ;; + sun*:*:4.2BSD:*) + UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null` + test "x${UNAME_RELEASE}" = "x" && UNAME_RELEASE=3 + case "`/bin/arch`" in + sun3) + echo m68k-sun-sunos${UNAME_RELEASE} + ;; + sun4) + echo sparc-sun-sunos${UNAME_RELEASE} + ;; + esac + exit ;; + aushp:SunOS:*:*) + echo sparc-auspex-sunos${UNAME_RELEASE} + exit ;; + # The situation for MiNT is a little confusing. The machine name + # can be virtually everything (everything which is not + # "atarist" or "atariste" at least should have a processor + # > m68000). The system name ranges from "MiNT" over "FreeMiNT" + # to the lowercase version "mint" (or "freemint"). Finally + # the system name "TOS" denotes a system which is actually not + # MiNT. But MiNT is downward compatible to TOS, so this should + # be no problem. + atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*) + echo m68k-atari-mint${UNAME_RELEASE} + exit ;; + atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*) + echo m68k-atari-mint${UNAME_RELEASE} + exit ;; + *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*) + echo m68k-atari-mint${UNAME_RELEASE} + exit ;; + milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*) + echo m68k-milan-mint${UNAME_RELEASE} + exit ;; + hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*) + echo m68k-hades-mint${UNAME_RELEASE} + exit ;; + *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*) + echo m68k-unknown-mint${UNAME_RELEASE} + exit ;; + m68k:machten:*:*) + echo m68k-apple-machten${UNAME_RELEASE} + exit ;; + powerpc:machten:*:*) + echo powerpc-apple-machten${UNAME_RELEASE} + exit ;; + RISC*:Mach:*:*) + echo mips-dec-mach_bsd4.3 + exit ;; + RISC*:ULTRIX:*:*) + echo mips-dec-ultrix${UNAME_RELEASE} + exit ;; + VAX*:ULTRIX*:*:*) + echo vax-dec-ultrix${UNAME_RELEASE} + exit ;; + 2020:CLIX:*:* | 2430:CLIX:*:*) + echo clipper-intergraph-clix${UNAME_RELEASE} + exit ;; + mips:*:*:UMIPS | mips:*:*:RISCos) + eval $set_cc_for_build + sed 's/^ //' << EOF >$dummy.c +#ifdef __cplusplus +#include /* for printf() prototype */ + int main (int argc, char *argv[]) { +#else + int main (argc, argv) int argc; char *argv[]; { +#endif + #if defined (host_mips) && defined (MIPSEB) + #if defined (SYSTYPE_SYSV) + printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0); + #endif + #if defined (SYSTYPE_SVR4) + printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0); + #endif + #if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD) + printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0); + #endif + #endif + exit (-1); + } +EOF + $CC_FOR_BUILD -o $dummy $dummy.c && + dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` && + SYSTEM_NAME=`$dummy $dummyarg` && + { echo "$SYSTEM_NAME"; exit; } + echo mips-mips-riscos${UNAME_RELEASE} + exit ;; + Motorola:PowerMAX_OS:*:*) + echo powerpc-motorola-powermax + exit ;; + Motorola:*:4.3:PL8-*) + echo powerpc-harris-powermax + exit ;; + Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*) + echo powerpc-harris-powermax + exit ;; + Night_Hawk:Power_UNIX:*:*) + echo powerpc-harris-powerunix + exit ;; + m88k:CX/UX:7*:*) + echo m88k-harris-cxux7 + exit ;; + m88k:*:4*:R4*) + echo m88k-motorola-sysv4 + exit ;; + m88k:*:3*:R3*) + echo m88k-motorola-sysv3 + exit ;; + AViiON:dgux:*:*) + # DG/UX returns AViiON for all architectures + UNAME_PROCESSOR=`/usr/bin/uname -p` + if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ] + then + if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \ + [ ${TARGET_BINARY_INTERFACE}x = x ] + then + echo m88k-dg-dgux${UNAME_RELEASE} + else + echo m88k-dg-dguxbcs${UNAME_RELEASE} + fi + else + echo i586-dg-dgux${UNAME_RELEASE} + fi + exit ;; + M88*:DolphinOS:*:*) # DolphinOS (SVR3) + echo m88k-dolphin-sysv3 + exit ;; + M88*:*:R3*:*) + # Delta 88k system running SVR3 + echo m88k-motorola-sysv3 + exit ;; + XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3) + echo m88k-tektronix-sysv3 + exit ;; + Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD) + echo m68k-tektronix-bsd + exit ;; + *:IRIX*:*:*) + echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'` + exit ;; + ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX. + echo romp-ibm-aix # uname -m gives an 8 hex-code CPU id + exit ;; # Note that: echo "'`uname -s`'" gives 'AIX ' + i*86:AIX:*:*) + echo i386-ibm-aix + exit ;; + ia64:AIX:*:*) + if [ -x /usr/bin/oslevel ] ; then + IBM_REV=`/usr/bin/oslevel` + else + IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} + fi + echo ${UNAME_MACHINE}-ibm-aix${IBM_REV} + exit ;; + *:AIX:2:3) + if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then + eval $set_cc_for_build + sed 's/^ //' << EOF >$dummy.c + #include + + main() + { + if (!__power_pc()) + exit(1); + puts("powerpc-ibm-aix3.2.5"); + exit(0); + } +EOF + if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` + then + echo "$SYSTEM_NAME" + else + echo rs6000-ibm-aix3.2.5 + fi + elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then + echo rs6000-ibm-aix3.2.4 + else + echo rs6000-ibm-aix3.2 + fi + exit ;; + *:AIX:*:[456]) + IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'` + if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then + IBM_ARCH=rs6000 + else + IBM_ARCH=powerpc + fi + if [ -x /usr/bin/oslevel ] ; then + IBM_REV=`/usr/bin/oslevel` + else + IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} + fi + echo ${IBM_ARCH}-ibm-aix${IBM_REV} + exit ;; + *:AIX:*:*) + echo rs6000-ibm-aix + exit ;; + ibmrt:4.4BSD:*|romp-ibm:BSD:*) + echo romp-ibm-bsd4.4 + exit ;; + ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and + echo romp-ibm-bsd${UNAME_RELEASE} # 4.3 with uname added to + exit ;; # report: romp-ibm BSD 4.3 + *:BOSX:*:*) + echo rs6000-bull-bosx + exit ;; + DPX/2?00:B.O.S.:*:*) + echo m68k-bull-sysv3 + exit ;; + 9000/[34]??:4.3bsd:1.*:*) + echo m68k-hp-bsd + exit ;; + hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*) + echo m68k-hp-bsd4.4 + exit ;; + 9000/[34678]??:HP-UX:*:*) + HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` + case "${UNAME_MACHINE}" in + 9000/31? ) HP_ARCH=m68000 ;; + 9000/[34]?? ) HP_ARCH=m68k ;; + 9000/[678][0-9][0-9]) + if [ -x /usr/bin/getconf ]; then + sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null` + sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null` + case "${sc_cpu_version}" in + 523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0 + 528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1 + 532) # CPU_PA_RISC2_0 + case "${sc_kernel_bits}" in + 32) HP_ARCH="hppa2.0n" ;; + 64) HP_ARCH="hppa2.0w" ;; + '') HP_ARCH="hppa2.0" ;; # HP-UX 10.20 + esac ;; + esac + fi + if [ "${HP_ARCH}" = "" ]; then + eval $set_cc_for_build + sed 's/^ //' << EOF >$dummy.c + + #define _HPUX_SOURCE + #include + #include + + int main () + { + #if defined(_SC_KERNEL_BITS) + long bits = sysconf(_SC_KERNEL_BITS); + #endif + long cpu = sysconf (_SC_CPU_VERSION); + + switch (cpu) + { + case CPU_PA_RISC1_0: puts ("hppa1.0"); break; + case CPU_PA_RISC1_1: puts ("hppa1.1"); break; + case CPU_PA_RISC2_0: + #if defined(_SC_KERNEL_BITS) + switch (bits) + { + case 64: puts ("hppa2.0w"); break; + case 32: puts ("hppa2.0n"); break; + default: puts ("hppa2.0"); break; + } break; + #else /* !defined(_SC_KERNEL_BITS) */ + puts ("hppa2.0"); break; + #endif + default: puts ("hppa1.0"); break; + } + exit (0); + } +EOF + (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy` + test -z "$HP_ARCH" && HP_ARCH=hppa + fi ;; + esac + if [ ${HP_ARCH} = "hppa2.0w" ] + then + eval $set_cc_for_build + + # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating + # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler + # generating 64-bit code. GNU and HP use different nomenclature: + # + # $ CC_FOR_BUILD=cc ./config.guess + # => hppa2.0w-hp-hpux11.23 + # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess + # => hppa64-hp-hpux11.23 + + if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | + grep -q __LP64__ + then + HP_ARCH="hppa2.0w" + else + HP_ARCH="hppa64" + fi + fi + echo ${HP_ARCH}-hp-hpux${HPUX_REV} + exit ;; + ia64:HP-UX:*:*) + HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` + echo ia64-hp-hpux${HPUX_REV} + exit ;; + 3050*:HI-UX:*:*) + eval $set_cc_for_build + sed 's/^ //' << EOF >$dummy.c + #include + int + main () + { + long cpu = sysconf (_SC_CPU_VERSION); + /* The order matters, because CPU_IS_HP_MC68K erroneously returns + true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct + results, however. */ + if (CPU_IS_PA_RISC (cpu)) + { + switch (cpu) + { + case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break; + case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break; + case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break; + default: puts ("hppa-hitachi-hiuxwe2"); break; + } + } + else if (CPU_IS_HP_MC68K (cpu)) + puts ("m68k-hitachi-hiuxwe2"); + else puts ("unknown-hitachi-hiuxwe2"); + exit (0); + } +EOF + $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` && + { echo "$SYSTEM_NAME"; exit; } + echo unknown-hitachi-hiuxwe2 + exit ;; + 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* ) + echo hppa1.1-hp-bsd + exit ;; + 9000/8??:4.3bsd:*:*) + echo hppa1.0-hp-bsd + exit ;; + *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*) + echo hppa1.0-hp-mpeix + exit ;; + hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* ) + echo hppa1.1-hp-osf + exit ;; + hp8??:OSF1:*:*) + echo hppa1.0-hp-osf + exit ;; + i*86:OSF1:*:*) + if [ -x /usr/sbin/sysversion ] ; then + echo ${UNAME_MACHINE}-unknown-osf1mk + else + echo ${UNAME_MACHINE}-unknown-osf1 + fi + exit ;; + parisc*:Lites*:*:*) + echo hppa1.1-hp-lites + exit ;; + C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*) + echo c1-convex-bsd + exit ;; + C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*) + if getsysinfo -f scalar_acc + then echo c32-convex-bsd + else echo c2-convex-bsd + fi + exit ;; + C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*) + echo c34-convex-bsd + exit ;; + C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*) + echo c38-convex-bsd + exit ;; + C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*) + echo c4-convex-bsd + exit ;; + CRAY*Y-MP:*:*:*) + echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*[A-Z]90:*:*:*) + echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \ + | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \ + -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \ + -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*TS:*:*:*) + echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*T3E:*:*:*) + echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*SV1:*:*:*) + echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' + exit ;; + *:UNICOS/mp:*:*) + echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' + exit ;; + F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*) + FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'` + FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'` + FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'` + echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" + exit ;; + 5000:UNIX_System_V:4.*:*) + FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'` + FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'` + echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" + exit ;; + i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*) + echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE} + exit ;; + sparc*:BSD/OS:*:*) + echo sparc-unknown-bsdi${UNAME_RELEASE} + exit ;; + *:BSD/OS:*:*) + echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE} + exit ;; + *:FreeBSD:*:*) + case ${UNAME_MACHINE} in + pc98) + echo i386-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; + amd64) + echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; + *) + echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; + esac + exit ;; + i*:CYGWIN*:*) + echo ${UNAME_MACHINE}-pc-cygwin + exit ;; + *:MINGW*:*) + echo ${UNAME_MACHINE}-pc-mingw32 + exit ;; + i*:windows32*:*) + # uname -m includes "-pc" on this system. + echo ${UNAME_MACHINE}-mingw32 + exit ;; + i*:PW*:*) + echo ${UNAME_MACHINE}-pc-pw32 + exit ;; + *:Interix*:*) + case ${UNAME_MACHINE} in + x86) + echo i586-pc-interix${UNAME_RELEASE} + exit ;; + authenticamd | genuineintel | EM64T) + echo x86_64-unknown-interix${UNAME_RELEASE} + exit ;; + IA64) + echo ia64-unknown-interix${UNAME_RELEASE} + exit ;; + esac ;; + [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*) + echo i${UNAME_MACHINE}-pc-mks + exit ;; + 8664:Windows_NT:*) + echo x86_64-pc-mks + exit ;; + i*:Windows_NT*:* | Pentium*:Windows_NT*:*) + # How do we know it's Interix rather than the generic POSIX subsystem? + # It also conflicts with pre-2.0 versions of AT&T UWIN. Should we + # UNAME_MACHINE based on the output of uname instead of i386? + echo i586-pc-interix + exit ;; + i*:UWIN*:*) + echo ${UNAME_MACHINE}-pc-uwin + exit ;; + amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*) + echo x86_64-unknown-cygwin + exit ;; + p*:CYGWIN*:*) + echo powerpcle-unknown-cygwin + exit ;; + prep*:SunOS:5.*:*) + echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` + exit ;; + *:GNU:*:*) + # the GNU system + echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'` + exit ;; + *:GNU/*:*:*) + # other systems with GNU libc and userland + echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu + exit ;; + i*86:Minix:*:*) + echo ${UNAME_MACHINE}-pc-minix + exit ;; + alpha:Linux:*:*) + case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in + EV5) UNAME_MACHINE=alphaev5 ;; + EV56) UNAME_MACHINE=alphaev56 ;; + PCA56) UNAME_MACHINE=alphapca56 ;; + PCA57) UNAME_MACHINE=alphapca56 ;; + EV6) UNAME_MACHINE=alphaev6 ;; + EV67) UNAME_MACHINE=alphaev67 ;; + EV68*) UNAME_MACHINE=alphaev68 ;; + esac + objdump --private-headers /bin/sh | grep -q ld.so.1 + if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi + echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC} + exit ;; + arm*:Linux:*:*) + eval $set_cc_for_build + if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \ + | grep -q __ARM_EABI__ + then + echo ${UNAME_MACHINE}-unknown-linux-gnu + else + echo ${UNAME_MACHINE}-unknown-linux-gnueabi + fi + exit ;; + avr32*:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-gnu + exit ;; + cris:Linux:*:*) + echo cris-axis-linux-gnu + exit ;; + crisv32:Linux:*:*) + echo crisv32-axis-linux-gnu + exit ;; + frv:Linux:*:*) + echo frv-unknown-linux-gnu + exit ;; + i*86:Linux:*:*) + LIBC=gnu + eval $set_cc_for_build + sed 's/^ //' << EOF >$dummy.c + #ifdef __dietlibc__ + LIBC=dietlibc + #endif +EOF + eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC'` + echo "${UNAME_MACHINE}-pc-linux-${LIBC}" + exit ;; + ia64:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-gnu + exit ;; + m32r*:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-gnu + exit ;; + m68*:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-gnu + exit ;; + mips:Linux:*:* | mips64:Linux:*:*) + eval $set_cc_for_build + sed 's/^ //' << EOF >$dummy.c + #undef CPU + #undef ${UNAME_MACHINE} + #undef ${UNAME_MACHINE}el + #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) + CPU=${UNAME_MACHINE}el + #else + #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) + CPU=${UNAME_MACHINE} + #else + CPU= + #endif + #endif +EOF + eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'` + test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; } + ;; + or32:Linux:*:*) + echo or32-unknown-linux-gnu + exit ;; + padre:Linux:*:*) + echo sparc-unknown-linux-gnu + exit ;; + parisc64:Linux:*:* | hppa64:Linux:*:*) + echo hppa64-unknown-linux-gnu + exit ;; + parisc:Linux:*:* | hppa:Linux:*:*) + # Look for CPU level + case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in + PA7*) echo hppa1.1-unknown-linux-gnu ;; + PA8*) echo hppa2.0-unknown-linux-gnu ;; + *) echo hppa-unknown-linux-gnu ;; + esac + exit ;; + ppc64:Linux:*:*) + echo powerpc64-unknown-linux-gnu + exit ;; + ppc:Linux:*:*) + echo powerpc-unknown-linux-gnu + exit ;; + s390:Linux:*:* | s390x:Linux:*:*) + echo ${UNAME_MACHINE}-ibm-linux + exit ;; + sh64*:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-gnu + exit ;; + sh*:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-gnu + exit ;; + sparc:Linux:*:* | sparc64:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-gnu + exit ;; + vax:Linux:*:*) + echo ${UNAME_MACHINE}-dec-linux-gnu + exit ;; + x86_64:Linux:*:*) + echo x86_64-unknown-linux-gnu + exit ;; + xtensa*:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-gnu + exit ;; + i*86:DYNIX/ptx:4*:*) + # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there. + # earlier versions are messed up and put the nodename in both + # sysname and nodename. + echo i386-sequent-sysv4 + exit ;; + i*86:UNIX_SV:4.2MP:2.*) + # Unixware is an offshoot of SVR4, but it has its own version + # number series starting with 2... + # I am not positive that other SVR4 systems won't match this, + # I just have to hope. -- rms. + # Use sysv4.2uw... so that sysv4* matches it. + echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION} + exit ;; + i*86:OS/2:*:*) + # If we were able to find `uname', then EMX Unix compatibility + # is probably installed. + echo ${UNAME_MACHINE}-pc-os2-emx + exit ;; + i*86:XTS-300:*:STOP) + echo ${UNAME_MACHINE}-unknown-stop + exit ;; + i*86:atheos:*:*) + echo ${UNAME_MACHINE}-unknown-atheos + exit ;; + i*86:syllable:*:*) + echo ${UNAME_MACHINE}-pc-syllable + exit ;; + i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*) + echo i386-unknown-lynxos${UNAME_RELEASE} + exit ;; + i*86:*DOS:*:*) + echo ${UNAME_MACHINE}-pc-msdosdjgpp + exit ;; + i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*) + UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'` + if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then + echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL} + else + echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL} + fi + exit ;; + i*86:*:5:[678]*) + # UnixWare 7.x, OpenUNIX and OpenServer 6. + case `/bin/uname -X | grep "^Machine"` in + *486*) UNAME_MACHINE=i486 ;; + *Pentium) UNAME_MACHINE=i586 ;; + *Pent*|*Celeron) UNAME_MACHINE=i686 ;; + esac + echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION} + exit ;; + i*86:*:3.2:*) + if test -f /usr/options/cb.name; then + UNAME_REL=`sed -n 's/.*Version //p' /dev/null >/dev/null ; then + UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')` + (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486 + (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \ + && UNAME_MACHINE=i586 + (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \ + && UNAME_MACHINE=i686 + (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \ + && UNAME_MACHINE=i686 + echo ${UNAME_MACHINE}-pc-sco$UNAME_REL + else + echo ${UNAME_MACHINE}-pc-sysv32 + fi + exit ;; + pc:*:*:*) + # Left here for compatibility: + # uname -m prints for DJGPP always 'pc', but it prints nothing about + # the processor, so we play safe by assuming i586. + # Note: whatever this is, it MUST be the same as what config.sub + # prints for the "djgpp" host, or else GDB configury will decide that + # this is a cross-build. + echo i586-pc-msdosdjgpp + exit ;; + Intel:Mach:3*:*) + echo i386-pc-mach3 + exit ;; + paragon:*:*:*) + echo i860-intel-osf1 + exit ;; + i860:*:4.*:*) # i860-SVR4 + if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then + echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4 + else # Add other i860-SVR4 vendors below as they are discovered. + echo i860-unknown-sysv${UNAME_RELEASE} # Unknown i860-SVR4 + fi + exit ;; + mini*:CTIX:SYS*5:*) + # "miniframe" + echo m68010-convergent-sysv + exit ;; + mc68k:UNIX:SYSTEM5:3.51m) + echo m68k-convergent-sysv + exit ;; + M680?0:D-NIX:5.3:*) + echo m68k-diab-dnix + exit ;; + M68*:*:R3V[5678]*:*) + test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;; + 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0) + OS_REL='' + test -r /etc/.relid \ + && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` + /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ + && { echo i486-ncr-sysv4.3${OS_REL}; exit; } + /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ + && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; + 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*) + /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ + && { echo i486-ncr-sysv4; exit; } ;; + NCR*:*:4.2:* | MPRAS*:*:4.2:*) + OS_REL='.3' + test -r /etc/.relid \ + && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` + /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ + && { echo i486-ncr-sysv4.3${OS_REL}; exit; } + /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ + && { echo i586-ncr-sysv4.3${OS_REL}; exit; } + /bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \ + && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; + m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*) + echo m68k-unknown-lynxos${UNAME_RELEASE} + exit ;; + mc68030:UNIX_System_V:4.*:*) + echo m68k-atari-sysv4 + exit ;; + TSUNAMI:LynxOS:2.*:*) + echo sparc-unknown-lynxos${UNAME_RELEASE} + exit ;; + rs6000:LynxOS:2.*:*) + echo rs6000-unknown-lynxos${UNAME_RELEASE} + exit ;; + PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*) + echo powerpc-unknown-lynxos${UNAME_RELEASE} + exit ;; + SM[BE]S:UNIX_SV:*:*) + echo mips-dde-sysv${UNAME_RELEASE} + exit ;; + RM*:ReliantUNIX-*:*:*) + echo mips-sni-sysv4 + exit ;; + RM*:SINIX-*:*:*) + echo mips-sni-sysv4 + exit ;; + *:SINIX-*:*:*) + if uname -p 2>/dev/null >/dev/null ; then + UNAME_MACHINE=`(uname -p) 2>/dev/null` + echo ${UNAME_MACHINE}-sni-sysv4 + else + echo ns32k-sni-sysv + fi + exit ;; + PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort + # says + echo i586-unisys-sysv4 + exit ;; + *:UNIX_System_V:4*:FTX*) + # From Gerald Hewes . + # How about differentiating between stratus architectures? -djm + echo hppa1.1-stratus-sysv4 + exit ;; + *:*:*:FTX*) + # From seanf@swdc.stratus.com. + echo i860-stratus-sysv4 + exit ;; + i*86:VOS:*:*) + # From Paul.Green@stratus.com. + echo ${UNAME_MACHINE}-stratus-vos + exit ;; + *:VOS:*:*) + # From Paul.Green@stratus.com. + echo hppa1.1-stratus-vos + exit ;; + mc68*:A/UX:*:*) + echo m68k-apple-aux${UNAME_RELEASE} + exit ;; + news*:NEWS-OS:6*:*) + echo mips-sony-newsos6 + exit ;; + R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*) + if [ -d /usr/nec ]; then + echo mips-nec-sysv${UNAME_RELEASE} + else + echo mips-unknown-sysv${UNAME_RELEASE} + fi + exit ;; + BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only. + echo powerpc-be-beos + exit ;; + BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only. + echo powerpc-apple-beos + exit ;; + BePC:BeOS:*:*) # BeOS running on Intel PC compatible. + echo i586-pc-beos + exit ;; + BePC:Haiku:*:*) # Haiku running on Intel PC compatible. + echo i586-pc-haiku + exit ;; + SX-4:SUPER-UX:*:*) + echo sx4-nec-superux${UNAME_RELEASE} + exit ;; + SX-5:SUPER-UX:*:*) + echo sx5-nec-superux${UNAME_RELEASE} + exit ;; + SX-6:SUPER-UX:*:*) + echo sx6-nec-superux${UNAME_RELEASE} + exit ;; + SX-7:SUPER-UX:*:*) + echo sx7-nec-superux${UNAME_RELEASE} + exit ;; + SX-8:SUPER-UX:*:*) + echo sx8-nec-superux${UNAME_RELEASE} + exit ;; + SX-8R:SUPER-UX:*:*) + echo sx8r-nec-superux${UNAME_RELEASE} + exit ;; + Power*:Rhapsody:*:*) + echo powerpc-apple-rhapsody${UNAME_RELEASE} + exit ;; + *:Rhapsody:*:*) + echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE} + exit ;; + *:Darwin:*:*) + UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown + case $UNAME_PROCESSOR in + i386) + eval $set_cc_for_build + if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then + if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \ + (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \ + grep IS_64BIT_ARCH >/dev/null + then + UNAME_PROCESSOR="x86_64" + fi + fi ;; + unknown) UNAME_PROCESSOR=powerpc ;; + esac + echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE} + exit ;; + *:procnto*:*:* | *:QNX:[0123456789]*:*) + UNAME_PROCESSOR=`uname -p` + if test "$UNAME_PROCESSOR" = "x86"; then + UNAME_PROCESSOR=i386 + UNAME_MACHINE=pc + fi + echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE} + exit ;; + *:QNX:*:4*) + echo i386-pc-qnx + exit ;; + NSE-?:NONSTOP_KERNEL:*:*) + echo nse-tandem-nsk${UNAME_RELEASE} + exit ;; + NSR-?:NONSTOP_KERNEL:*:*) + echo nsr-tandem-nsk${UNAME_RELEASE} + exit ;; + *:NonStop-UX:*:*) + echo mips-compaq-nonstopux + exit ;; + BS2000:POSIX*:*:*) + echo bs2000-siemens-sysv + exit ;; + DS/*:UNIX_System_V:*:*) + echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE} + exit ;; + *:Plan9:*:*) + # "uname -m" is not consistent, so use $cputype instead. 386 + # is converted to i386 for consistency with other x86 + # operating systems. + if test "$cputype" = "386"; then + UNAME_MACHINE=i386 + else + UNAME_MACHINE="$cputype" + fi + echo ${UNAME_MACHINE}-unknown-plan9 + exit ;; + *:TOPS-10:*:*) + echo pdp10-unknown-tops10 + exit ;; + *:TENEX:*:*) + echo pdp10-unknown-tenex + exit ;; + KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*) + echo pdp10-dec-tops20 + exit ;; + XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*) + echo pdp10-xkl-tops20 + exit ;; + *:TOPS-20:*:*) + echo pdp10-unknown-tops20 + exit ;; + *:ITS:*:*) + echo pdp10-unknown-its + exit ;; + SEI:*:*:SEIUX) + echo mips-sei-seiux${UNAME_RELEASE} + exit ;; + *:DragonFly:*:*) + echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` + exit ;; + *:*VMS:*:*) + UNAME_MACHINE=`(uname -p) 2>/dev/null` + case "${UNAME_MACHINE}" in + A*) echo alpha-dec-vms ; exit ;; + I*) echo ia64-dec-vms ; exit ;; + V*) echo vax-dec-vms ; exit ;; + esac ;; + *:XENIX:*:SysV) + echo i386-pc-xenix + exit ;; + i*86:skyos:*:*) + echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//' + exit ;; + i*86:rdos:*:*) + echo ${UNAME_MACHINE}-pc-rdos + exit ;; + i*86:AROS:*:*) + echo ${UNAME_MACHINE}-pc-aros + exit ;; +esac + +#echo '(No uname command or uname output not recognized.)' 1>&2 +#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2 + +eval $set_cc_for_build +cat >$dummy.c < +# include +#endif +main () +{ +#if defined (sony) +#if defined (MIPSEB) + /* BFD wants "bsd" instead of "newsos". Perhaps BFD should be changed, + I don't know.... */ + printf ("mips-sony-bsd\n"); exit (0); +#else +#include + printf ("m68k-sony-newsos%s\n", +#ifdef NEWSOS4 + "4" +#else + "" +#endif + ); exit (0); +#endif +#endif + +#if defined (__arm) && defined (__acorn) && defined (__unix) + printf ("arm-acorn-riscix\n"); exit (0); +#endif + +#if defined (hp300) && !defined (hpux) + printf ("m68k-hp-bsd\n"); exit (0); +#endif + +#if defined (NeXT) +#if !defined (__ARCHITECTURE__) +#define __ARCHITECTURE__ "m68k" +#endif + int version; + version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`; + if (version < 4) + printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version); + else + printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version); + exit (0); +#endif + +#if defined (MULTIMAX) || defined (n16) +#if defined (UMAXV) + printf ("ns32k-encore-sysv\n"); exit (0); +#else +#if defined (CMU) + printf ("ns32k-encore-mach\n"); exit (0); +#else + printf ("ns32k-encore-bsd\n"); exit (0); +#endif +#endif +#endif + +#if defined (__386BSD__) + printf ("i386-pc-bsd\n"); exit (0); +#endif + +#if defined (sequent) +#if defined (i386) + printf ("i386-sequent-dynix\n"); exit (0); +#endif +#if defined (ns32000) + printf ("ns32k-sequent-dynix\n"); exit (0); +#endif +#endif + +#if defined (_SEQUENT_) + struct utsname un; + + uname(&un); + + if (strncmp(un.version, "V2", 2) == 0) { + printf ("i386-sequent-ptx2\n"); exit (0); + } + if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */ + printf ("i386-sequent-ptx1\n"); exit (0); + } + printf ("i386-sequent-ptx\n"); exit (0); + +#endif + +#if defined (vax) +# if !defined (ultrix) +# include +# if defined (BSD) +# if BSD == 43 + printf ("vax-dec-bsd4.3\n"); exit (0); +# else +# if BSD == 199006 + printf ("vax-dec-bsd4.3reno\n"); exit (0); +# else + printf ("vax-dec-bsd\n"); exit (0); +# endif +# endif +# else + printf ("vax-dec-bsd\n"); exit (0); +# endif +# else + printf ("vax-dec-ultrix\n"); exit (0); +# endif +#endif + +#if defined (alliant) && defined (i860) + printf ("i860-alliant-bsd\n"); exit (0); +#endif + + exit (1); +} +EOF + +$CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && SYSTEM_NAME=`$dummy` && + { echo "$SYSTEM_NAME"; exit; } + +# Apollos put the system type in the environment. + +test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit; } + +# Convex versions that predate uname can use getsysinfo(1) + +if [ -x /usr/convex/getsysinfo ] +then + case `getsysinfo -f cpu_type` in + c1*) + echo c1-convex-bsd + exit ;; + c2*) + if getsysinfo -f scalar_acc + then echo c32-convex-bsd + else echo c2-convex-bsd + fi + exit ;; + c34*) + echo c34-convex-bsd + exit ;; + c38*) + echo c38-convex-bsd + exit ;; + c4*) + echo c4-convex-bsd + exit ;; + esac +fi + +cat >&2 < in order to provide the needed +information to handle your system. + +config.guess timestamp = $timestamp + +uname -m = `(uname -m) 2>/dev/null || echo unknown` +uname -r = `(uname -r) 2>/dev/null || echo unknown` +uname -s = `(uname -s) 2>/dev/null || echo unknown` +uname -v = `(uname -v) 2>/dev/null || echo unknown` + +/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null` +/bin/uname -X = `(/bin/uname -X) 2>/dev/null` + +hostinfo = `(hostinfo) 2>/dev/null` +/bin/universe = `(/bin/universe) 2>/dev/null` +/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null` +/bin/arch = `(/bin/arch) 2>/dev/null` +/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null` +/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null` + +UNAME_MACHINE = ${UNAME_MACHINE} +UNAME_RELEASE = ${UNAME_RELEASE} +UNAME_SYSTEM = ${UNAME_SYSTEM} +UNAME_VERSION = ${UNAME_VERSION} +EOF + +exit 1 + +# Local variables: +# eval: (add-hook 'write-file-hooks 'time-stamp) +# time-stamp-start: "timestamp='" +# time-stamp-format: "%:y-%02m-%02d" +# time-stamp-end: "'" +# End: diff --git a/config.h.in b/config.h.in new file mode 100644 index 0000000..bd5177c --- /dev/null +++ b/config.h.in @@ -0,0 +1,314 @@ +/* config.h.in. Generated from configure.in by autoheader. */ + +/* Enable optimizer debugging */ +#undef BDEBUG + +/* define if you have a cloning BPF device */ +#undef HAVE_CLONING_BPF + +/* define if you have the DAG API */ +#undef HAVE_DAG_API + +/* define if you have dag_get_erf_types() */ +#undef HAVE_DAG_GET_ERF_TYPES + +/* define if you have dag_get_stream_erf_types() */ +#undef HAVE_DAG_GET_STREAM_ERF_TYPES + +/* define if you have streams capable DAG API */ +#undef HAVE_DAG_STREAMS_API + +/* define if you have vdag_set_device_info() */ +#undef HAVE_DAG_VDAG + +/* Define to 1 if you have the declaration of `ether_hostton', and to 0 if you + don't. */ +#undef HAVE_DECL_ETHER_HOSTTON + +/* define if you have a /dev/dlpi */ +#undef HAVE_DEV_DLPI + +/* if passive_req_t primitive exists */ +#undef HAVE_DLPI_PASSIVE + +/* Define to 1 if you have the `ether_hostton' function. */ +#undef HAVE_ETHER_HOSTTON + +/* Define to 1 if fseeko (and presumably ftello) exists and is declared. */ +#undef HAVE_FSEEKO + +/* on HP-UX 10.20 or later */ +#undef HAVE_HPUX10_20_OR_LATER + +/* on HP-UX 9.x */ +#undef HAVE_HPUX9 + +/* if ppa_info_t_dl_module_id exists */ +#undef HAVE_HP_PPA_INFO_T_DL_MODULE_ID_1 + +/* Define to 1 if you have the header file. */ +#undef HAVE_INTTYPES_H + +/* if libdlpi exists */ +#undef HAVE_LIBDLPI + +/* if libnl exists */ +#undef HAVE_LIBNL + +/* if libnl exists and is version 2.x */ +#undef HAVE_LIBNL_2_x + +/* Define to 1 if you have the header file. */ +#undef HAVE_LIMITS_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_LINUX_COMPILER_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_LINUX_ETHTOOL_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_LINUX_IF_PACKET_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_LINUX_NET_TSTAMP_H + +/* if tp_vlan_tci exists */ +#undef HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI + +/* Define to 1 if you have the header file. */ +#undef HAVE_LINUX_TYPES_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_LINUX_USBDEVICE_FS_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_LINUX_WIRELESS_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_MEMORY_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_NETINET_ETHER_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_NETINET_IF_ETHER_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_NETPACKET_IF_PACKET_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_NETPACKET_PACKET_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_NET_IF_MEDIA_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_NET_PFVAR_H + +/* if there's an os_proto.h for this platform, to use additional prototypes */ +#undef HAVE_OS_PROTO_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_PATHS_H + +/* define if net/pfvar.h defines PF_NAT through PF_NORDR */ +#undef HAVE_PF_NAT_THROUGH_PF_NORDR + +/* define if you have a Septel API */ +#undef HAVE_SEPTEL_API + +/* define if you have Myricom SNF API */ +#undef HAVE_SNF_API + +/* Define to 1 if you have the `snprintf' function. */ +#undef HAVE_SNPRINTF + +/* if struct sockaddr has the sa_len member */ +#undef HAVE_SOCKADDR_SA_LEN + +/* if struct sockaddr_storage exists */ +#undef HAVE_SOCKADDR_STORAGE + +/* define if socklen_t is defined */ +#undef HAVE_SOCKLEN_T + +/* On solaris */ +#undef HAVE_SOLARIS + +/* Define to 1 if you have the header file. */ +#undef HAVE_STDINT_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_STDLIB_H + +/* Define to 1 if you have the `strerror' function. */ +#undef HAVE_STRERROR + +/* Define to 1 if you have the header file. */ +#undef HAVE_STRINGS_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_STRING_H + +/* Define to 1 if you have the `strlcpy' function. */ +#undef HAVE_STRLCPY + +/* Define to 1 if the system has the type `struct BPF_TIMEVAL'. */ +#undef HAVE_STRUCT_BPF_TIMEVAL + +/* Define to 1 if the system has the type `struct ether_addr'. */ +#undef HAVE_STRUCT_ETHER_ADDR + +/* Define to 1 if you have the header file. */ +#undef HAVE_SYS_BITYPES_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_SYS_BUFMOD_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_SYS_DLPI_EXT_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_SYS_IOCCOM_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_SYS_SOCKIO_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_SYS_STAT_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_SYS_TYPES_H + +/* if if_packet.h has tpacket_stats defined */ +#undef HAVE_TPACKET_STATS + +/* Define to 1 if you have the header file. */ +#undef HAVE_UNISTD_H + +/* if struct usbdevfs_ctrltransfer has bRequestType */ +#undef HAVE_USBDEVFS_CTRLTRANSFER_BREQUESTTYPE + +/* define if version.h is generated in the build procedure */ +#undef HAVE_VERSION_H + +/* Define to 1 if you have the `vsnprintf' function. */ +#undef HAVE_VSNPRINTF + +/* define if the system supports zerocopy BPF */ +#undef HAVE_ZEROCOPY_BPF + +/* define if your compiler has __attribute__ */ +#undef HAVE___ATTRIBUTE__ + +/* IPv6 */ +#undef INET6 + +/* if unaligned access fails */ +#undef LBL_ALIGN + +/* path for device for USB sniffing */ +#undef LINUX_USB_MON_DEV + +/* Define to 1 if netinet/ether.h declares `ether_hostton' */ +#undef NETINET_ETHER_H_DECLARES_ETHER_HOSTTON + +/* Define to 1 if netinet/if_ether.h declares `ether_hostton' */ +#undef NETINET_IF_ETHER_H_DECLARES_ETHER_HOSTTON + +/* do not use protochain */ +#undef NO_PROTOCHAIN + +/* Define to the address where bug reports for this package should be sent. */ +#undef PACKAGE_BUGREPORT + +/* Define to the full name of this package. */ +#undef PACKAGE_NAME + +/* Define to the full name and version of this package. */ +#undef PACKAGE_STRING + +/* Define to the one symbol short name of this package. */ +#undef PACKAGE_TARNAME + +/* Define to the home page for this package. */ +#undef PACKAGE_URL + +/* Define to the version of this package. */ +#undef PACKAGE_VERSION + +/* /dev/dlpi directory */ +#undef PCAP_DEV_PREFIX + +/* target host supports Bluetooth sniffing */ +#undef PCAP_SUPPORT_BT + +/* target host supports CAN sniffing */ +#undef PCAP_SUPPORT_CAN + +/* target host supports canusb */ +#undef PCAP_SUPPORT_CANUSB + +/* target host supports netfilter sniffing */ +#undef PCAP_SUPPORT_NETFILTER + +/* target host supports USB sniffing */ +#undef PCAP_SUPPORT_USB + +/* include ACN support */ +#undef SITA + +/* Define to 1 if you have the ANSI C header files. */ +#undef STDC_HEADERS + +/* Enable parser debugging */ +#undef YYDEBUG + +/* Number of bits in a file offset, on hosts where this is settable. */ +#undef _FILE_OFFSET_BITS + +/* needed on HP-UX */ +#undef _HPUX_SOURCE + +/* Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2). */ +#undef _LARGEFILE_SOURCE + +/* Define for large files, on AIX-style hosts. */ +#undef _LARGE_FILES + +/* define on AIX to get certain functions */ +#undef _SUN + +/* to handle Ultrix compilers that don't support const in prototypes */ +#undef const + +/* Define as token for inline if inlining supported */ +#undef inline + +/* Define to `short' if int16_t not defined. */ +#undef int16_t + +/* Define to `int' if int32_t not defined. */ +#undef int32_t + +/* Define to `long long' if int64_t not defined. */ +#undef int64_t + +/* Define to `signed char' if int8_t not defined. */ +#undef int8_t + +/* on sinix */ +#undef sinix + +/* Define to `unsigned short' if u_int16_t not defined. */ +#undef u_int16_t + +/* Define to `unsigned int' if u_int32_t not defined. */ +#undef u_int32_t + +/* Define to `unsigned long long' if u_int64_t not defined. */ +#undef u_int64_t + +/* Define to `unsigned char' if u_int8_t not defined. */ +#undef u_int8_t diff --git a/config.sub b/config.sub new file mode 100755 index 0000000..8518609 --- /dev/null +++ b/config.sub @@ -0,0 +1,1708 @@ +#! /bin/sh +# Configuration validation subroutine script. +# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, +# 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 +# Free Software Foundation, Inc. + +timestamp='2009-12-31' + +# This file is (in principle) common to ALL GNU software. +# The presence of a machine in this file suggests that SOME GNU software +# can handle that machine. It does not imply ALL GNU software can. +# +# This file is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA +# 02110-1301, USA. +# +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program that contains a +# configuration script generated by Autoconf, you may include it under +# the same distribution terms that you use for the rest of that program. + + +# Please send patches to . Submit a context +# diff and a properly formatted GNU ChangeLog entry. +# +# Configuration subroutine to validate and canonicalize a configuration type. +# Supply the specified configuration type as an argument. +# If it is invalid, we print an error message on stderr and exit with code 1. +# Otherwise, we print the canonical config type on stdout and succeed. + +# You can get the latest version of this script from: +# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD + +# This file is supposed to be the same for all GNU packages +# and recognize all the CPU types, system types and aliases +# that are meaningful with *any* GNU software. +# Each package is responsible for reporting which valid configurations +# it does not support. The user should be able to distinguish +# a failure to support a valid configuration from a meaningless +# configuration. + +# The goal of this file is to map all the various variations of a given +# machine specification into a single specification in the form: +# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM +# or in some cases, the newer four-part form: +# CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM +# It is wrong to echo any other type of specification. + +me=`echo "$0" | sed -e 's,.*/,,'` + +usage="\ +Usage: $0 [OPTION] CPU-MFR-OPSYS + $0 [OPTION] ALIAS + +Canonicalize a configuration name. + +Operation modes: + -h, --help print this help, then exit + -t, --time-stamp print date of last modification, then exit + -v, --version print version number, then exit + +Report bugs and patches to ." + +version="\ +GNU config.sub ($timestamp) + +Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, +2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free +Software Foundation, Inc. + +This is free software; see the source for copying conditions. There is NO +warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." + +help=" +Try \`$me --help' for more information." + +# Parse command line +while test $# -gt 0 ; do + case $1 in + --time-stamp | --time* | -t ) + echo "$timestamp" ; exit ;; + --version | -v ) + echo "$version" ; exit ;; + --help | --h* | -h ) + echo "$usage"; exit ;; + -- ) # Stop option processing + shift; break ;; + - ) # Use stdin as input. + break ;; + -* ) + echo "$me: invalid option $1$help" + exit 1 ;; + + *local*) + # First pass through any local machine types. + echo $1 + exit ;; + + * ) + break ;; + esac +done + +case $# in + 0) echo "$me: missing argument$help" >&2 + exit 1;; + 1) ;; + *) echo "$me: too many arguments$help" >&2 + exit 1;; +esac + +# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any). +# Here we must recognize all the valid KERNEL-OS combinations. +maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'` +case $maybe_os in + nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | \ + uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | \ + kopensolaris*-gnu* | \ + storm-chaos* | os2-emx* | rtmk-nova*) + os=-$maybe_os + basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'` + ;; + *) + basic_machine=`echo $1 | sed 's/-[^-]*$//'` + if [ $basic_machine != $1 ] + then os=`echo $1 | sed 's/.*-/-/'` + else os=; fi + ;; +esac + +### Let's recognize common machines as not being operating systems so +### that things like config.sub decstation-3100 work. We also +### recognize some manufacturers as not being operating systems, so we +### can provide default operating systems below. +case $os in + -sun*os*) + # Prevent following clause from handling this invalid input. + ;; + -dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \ + -att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \ + -unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \ + -convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\ + -c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \ + -harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \ + -apple | -axis | -knuth | -cray | -microblaze) + os= + basic_machine=$1 + ;; + -bluegene*) + os=-cnk + ;; + -sim | -cisco | -oki | -wec | -winbond) + os= + basic_machine=$1 + ;; + -scout) + ;; + -wrs) + os=-vxworks + basic_machine=$1 + ;; + -chorusos*) + os=-chorusos + basic_machine=$1 + ;; + -chorusrdb) + os=-chorusrdb + basic_machine=$1 + ;; + -hiux*) + os=-hiuxwe2 + ;; + -sco6) + os=-sco5v6 + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -sco5) + os=-sco3.2v5 + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -sco4) + os=-sco3.2v4 + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -sco3.2.[4-9]*) + os=`echo $os | sed -e 's/sco3.2./sco3.2v/'` + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -sco3.2v[4-9]*) + # Don't forget version if it is 3.2v4 or newer. + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -sco5v6*) + # Don't forget version if it is 3.2v4 or newer. + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -sco*) + os=-sco3.2v2 + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -udk*) + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -isc) + os=-isc2.2 + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -clix*) + basic_machine=clipper-intergraph + ;; + -isc*) + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -lynx*) + os=-lynxos + ;; + -ptx*) + basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'` + ;; + -windowsnt*) + os=`echo $os | sed -e 's/windowsnt/winnt/'` + ;; + -psos*) + os=-psos + ;; + -mint | -mint[0-9]*) + basic_machine=m68k-atari + os=-mint + ;; +esac + +# Decode aliases for certain CPU-COMPANY combinations. +case $basic_machine in + # Recognize the basic CPU types without company name. + # Some are omitted here because they have special meanings below. + 1750a | 580 \ + | a29k \ + | alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \ + | alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \ + | am33_2.0 \ + | arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \ + | bfin \ + | c4x | clipper \ + | d10v | d30v | dlx | dsp16xx \ + | fido | fr30 | frv \ + | h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \ + | i370 | i860 | i960 | ia64 \ + | ip2k | iq2000 \ + | lm32 \ + | m32c | m32r | m32rle | m68000 | m68k | m88k \ + | maxq | mb | microblaze | mcore | mep | metag \ + | mips | mipsbe | mipseb | mipsel | mipsle \ + | mips16 \ + | mips64 | mips64el \ + | mips64octeon | mips64octeonel \ + | mips64orion | mips64orionel \ + | mips64r5900 | mips64r5900el \ + | mips64vr | mips64vrel \ + | mips64vr4100 | mips64vr4100el \ + | mips64vr4300 | mips64vr4300el \ + | mips64vr5000 | mips64vr5000el \ + | mips64vr5900 | mips64vr5900el \ + | mipsisa32 | mipsisa32el \ + | mipsisa32r2 | mipsisa32r2el \ + | mipsisa64 | mipsisa64el \ + | mipsisa64r2 | mipsisa64r2el \ + | mipsisa64sb1 | mipsisa64sb1el \ + | mipsisa64sr71k | mipsisa64sr71kel \ + | mipstx39 | mipstx39el \ + | mn10200 | mn10300 \ + | moxie \ + | mt \ + | msp430 \ + | nios | nios2 \ + | ns16k | ns32k \ + | or32 \ + | pdp10 | pdp11 | pj | pjl \ + | powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \ + | pyramid \ + | rx \ + | score \ + | sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \ + | sh64 | sh64le \ + | sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \ + | sparcv8 | sparcv9 | sparcv9b | sparcv9v \ + | spu | strongarm \ + | tahoe | thumb | tic4x | tic80 | tron \ + | ubicom32 \ + | v850 | v850e \ + | we32k \ + | x86 | xc16x | xscale | xscalee[bl] | xstormy16 | xtensa \ + | z8k | z80) + basic_machine=$basic_machine-unknown + ;; + m6811 | m68hc11 | m6812 | m68hc12 | picochip) + # Motorola 68HC11/12. + basic_machine=$basic_machine-unknown + os=-none + ;; + m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k) + ;; + ms1) + basic_machine=mt-unknown + ;; + + # We use `pc' rather than `unknown' + # because (1) that's what they normally are, and + # (2) the word "unknown" tends to confuse beginning users. + i*86 | x86_64) + basic_machine=$basic_machine-pc + ;; + # Object if more than one company name word. + *-*-*) + echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2 + exit 1 + ;; + # Recognize the basic CPU types with company name. + 580-* \ + | a29k-* \ + | alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \ + | alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \ + | alphapca5[67]-* | alpha64pca5[67]-* | arc-* \ + | arm-* | armbe-* | armle-* | armeb-* | armv*-* \ + | avr-* | avr32-* \ + | bfin-* | bs2000-* \ + | c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \ + | clipper-* | craynv-* | cydra-* \ + | d10v-* | d30v-* | dlx-* \ + | elxsi-* \ + | f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \ + | h8300-* | h8500-* \ + | hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \ + | i*86-* | i860-* | i960-* | ia64-* \ + | ip2k-* | iq2000-* \ + | lm32-* \ + | m32c-* | m32r-* | m32rle-* \ + | m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \ + | m88110-* | m88k-* | maxq-* | mcore-* | metag-* | microblaze-* \ + | mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \ + | mips16-* \ + | mips64-* | mips64el-* \ + | mips64octeon-* | mips64octeonel-* \ + | mips64orion-* | mips64orionel-* \ + | mips64r5900-* | mips64r5900el-* \ + | mips64vr-* | mips64vrel-* \ + | mips64vr4100-* | mips64vr4100el-* \ + | mips64vr4300-* | mips64vr4300el-* \ + | mips64vr5000-* | mips64vr5000el-* \ + | mips64vr5900-* | mips64vr5900el-* \ + | mipsisa32-* | mipsisa32el-* \ + | mipsisa32r2-* | mipsisa32r2el-* \ + | mipsisa64-* | mipsisa64el-* \ + | mipsisa64r2-* | mipsisa64r2el-* \ + | mipsisa64sb1-* | mipsisa64sb1el-* \ + | mipsisa64sr71k-* | mipsisa64sr71kel-* \ + | mipstx39-* | mipstx39el-* \ + | mmix-* \ + | mt-* \ + | msp430-* \ + | nios-* | nios2-* \ + | none-* | np1-* | ns16k-* | ns32k-* \ + | orion-* \ + | pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \ + | powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \ + | pyramid-* \ + | romp-* | rs6000-* | rx-* \ + | sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \ + | shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \ + | sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \ + | sparclite-* \ + | sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | strongarm-* | sv1-* | sx?-* \ + | tahoe-* | thumb-* \ + | tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* | tile-* \ + | tron-* \ + | ubicom32-* \ + | v850-* | v850e-* | vax-* \ + | we32k-* \ + | x86-* | x86_64-* | xc16x-* | xps100-* | xscale-* | xscalee[bl]-* \ + | xstormy16-* | xtensa*-* \ + | ymp-* \ + | z8k-* | z80-*) + ;; + # Recognize the basic CPU types without company name, with glob match. + xtensa*) + basic_machine=$basic_machine-unknown + ;; + # Recognize the various machine names and aliases which stand + # for a CPU type and a company and sometimes even an OS. + 386bsd) + basic_machine=i386-unknown + os=-bsd + ;; + 3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc) + basic_machine=m68000-att + ;; + 3b*) + basic_machine=we32k-att + ;; + a29khif) + basic_machine=a29k-amd + os=-udi + ;; + abacus) + basic_machine=abacus-unknown + ;; + adobe68k) + basic_machine=m68010-adobe + os=-scout + ;; + alliant | fx80) + basic_machine=fx80-alliant + ;; + altos | altos3068) + basic_machine=m68k-altos + ;; + am29k) + basic_machine=a29k-none + os=-bsd + ;; + amd64) + basic_machine=x86_64-pc + ;; + amd64-*) + basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + amdahl) + basic_machine=580-amdahl + os=-sysv + ;; + amiga | amiga-*) + basic_machine=m68k-unknown + ;; + amigaos | amigados) + basic_machine=m68k-unknown + os=-amigaos + ;; + amigaunix | amix) + basic_machine=m68k-unknown + os=-sysv4 + ;; + apollo68) + basic_machine=m68k-apollo + os=-sysv + ;; + apollo68bsd) + basic_machine=m68k-apollo + os=-bsd + ;; + aros) + basic_machine=i386-pc + os=-aros + ;; + aux) + basic_machine=m68k-apple + os=-aux + ;; + balance) + basic_machine=ns32k-sequent + os=-dynix + ;; + blackfin) + basic_machine=bfin-unknown + os=-linux + ;; + blackfin-*) + basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'` + os=-linux + ;; + bluegene*) + basic_machine=powerpc-ibm + os=-cnk + ;; + c90) + basic_machine=c90-cray + os=-unicos + ;; + cegcc) + basic_machine=arm-unknown + os=-cegcc + ;; + convex-c1) + basic_machine=c1-convex + os=-bsd + ;; + convex-c2) + basic_machine=c2-convex + os=-bsd + ;; + convex-c32) + basic_machine=c32-convex + os=-bsd + ;; + convex-c34) + basic_machine=c34-convex + os=-bsd + ;; + convex-c38) + basic_machine=c38-convex + os=-bsd + ;; + cray | j90) + basic_machine=j90-cray + os=-unicos + ;; + craynv) + basic_machine=craynv-cray + os=-unicosmp + ;; + cr16) + basic_machine=cr16-unknown + os=-elf + ;; + crds | unos) + basic_machine=m68k-crds + ;; + crisv32 | crisv32-* | etraxfs*) + basic_machine=crisv32-axis + ;; + cris | cris-* | etrax*) + basic_machine=cris-axis + ;; + crx) + basic_machine=crx-unknown + os=-elf + ;; + da30 | da30-*) + basic_machine=m68k-da30 + ;; + decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn) + basic_machine=mips-dec + ;; + decsystem10* | dec10*) + basic_machine=pdp10-dec + os=-tops10 + ;; + decsystem20* | dec20*) + basic_machine=pdp10-dec + os=-tops20 + ;; + delta | 3300 | motorola-3300 | motorola-delta \ + | 3300-motorola | delta-motorola) + basic_machine=m68k-motorola + ;; + delta88) + basic_machine=m88k-motorola + os=-sysv3 + ;; + dicos) + basic_machine=i686-pc + os=-dicos + ;; + djgpp) + basic_machine=i586-pc + os=-msdosdjgpp + ;; + dpx20 | dpx20-*) + basic_machine=rs6000-bull + os=-bosx + ;; + dpx2* | dpx2*-bull) + basic_machine=m68k-bull + os=-sysv3 + ;; + ebmon29k) + basic_machine=a29k-amd + os=-ebmon + ;; + elxsi) + basic_machine=elxsi-elxsi + os=-bsd + ;; + encore | umax | mmax) + basic_machine=ns32k-encore + ;; + es1800 | OSE68k | ose68k | ose | OSE) + basic_machine=m68k-ericsson + os=-ose + ;; + fx2800) + basic_machine=i860-alliant + ;; + genix) + basic_machine=ns32k-ns + ;; + gmicro) + basic_machine=tron-gmicro + os=-sysv + ;; + go32) + basic_machine=i386-pc + os=-go32 + ;; + h3050r* | hiux*) + basic_machine=hppa1.1-hitachi + os=-hiuxwe2 + ;; + h8300hms) + basic_machine=h8300-hitachi + os=-hms + ;; + h8300xray) + basic_machine=h8300-hitachi + os=-xray + ;; + h8500hms) + basic_machine=h8500-hitachi + os=-hms + ;; + harris) + basic_machine=m88k-harris + os=-sysv3 + ;; + hp300-*) + basic_machine=m68k-hp + ;; + hp300bsd) + basic_machine=m68k-hp + os=-bsd + ;; + hp300hpux) + basic_machine=m68k-hp + os=-hpux + ;; + hp3k9[0-9][0-9] | hp9[0-9][0-9]) + basic_machine=hppa1.0-hp + ;; + hp9k2[0-9][0-9] | hp9k31[0-9]) + basic_machine=m68000-hp + ;; + hp9k3[2-9][0-9]) + basic_machine=m68k-hp + ;; + hp9k6[0-9][0-9] | hp6[0-9][0-9]) + basic_machine=hppa1.0-hp + ;; + hp9k7[0-79][0-9] | hp7[0-79][0-9]) + basic_machine=hppa1.1-hp + ;; + hp9k78[0-9] | hp78[0-9]) + # FIXME: really hppa2.0-hp + basic_machine=hppa1.1-hp + ;; + hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893) + # FIXME: really hppa2.0-hp + basic_machine=hppa1.1-hp + ;; + hp9k8[0-9][13679] | hp8[0-9][13679]) + basic_machine=hppa1.1-hp + ;; + hp9k8[0-9][0-9] | hp8[0-9][0-9]) + basic_machine=hppa1.0-hp + ;; + hppa-next) + os=-nextstep3 + ;; + hppaosf) + basic_machine=hppa1.1-hp + os=-osf + ;; + hppro) + basic_machine=hppa1.1-hp + os=-proelf + ;; + i370-ibm* | ibm*) + basic_machine=i370-ibm + ;; +# I'm not sure what "Sysv32" means. Should this be sysv3.2? + i*86v32) + basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` + os=-sysv32 + ;; + i*86v4*) + basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` + os=-sysv4 + ;; + i*86v) + basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` + os=-sysv + ;; + i*86sol2) + basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` + os=-solaris2 + ;; + i386mach) + basic_machine=i386-mach + os=-mach + ;; + i386-vsta | vsta) + basic_machine=i386-unknown + os=-vsta + ;; + iris | iris4d) + basic_machine=mips-sgi + case $os in + -irix*) + ;; + *) + os=-irix4 + ;; + esac + ;; + isi68 | isi) + basic_machine=m68k-isi + os=-sysv + ;; + m68knommu) + basic_machine=m68k-unknown + os=-linux + ;; + m68knommu-*) + basic_machine=m68k-`echo $basic_machine | sed 's/^[^-]*-//'` + os=-linux + ;; + m88k-omron*) + basic_machine=m88k-omron + ;; + magnum | m3230) + basic_machine=mips-mips + os=-sysv + ;; + merlin) + basic_machine=ns32k-utek + os=-sysv + ;; + microblaze) + basic_machine=microblaze-xilinx + ;; + mingw32) + basic_machine=i386-pc + os=-mingw32 + ;; + mingw32ce) + basic_machine=arm-unknown + os=-mingw32ce + ;; + miniframe) + basic_machine=m68000-convergent + ;; + *mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*) + basic_machine=m68k-atari + os=-mint + ;; + mips3*-*) + basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'` + ;; + mips3*) + basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown + ;; + monitor) + basic_machine=m68k-rom68k + os=-coff + ;; + morphos) + basic_machine=powerpc-unknown + os=-morphos + ;; + msdos) + basic_machine=i386-pc + os=-msdos + ;; + ms1-*) + basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'` + ;; + mvs) + basic_machine=i370-ibm + os=-mvs + ;; + ncr3000) + basic_machine=i486-ncr + os=-sysv4 + ;; + netbsd386) + basic_machine=i386-unknown + os=-netbsd + ;; + netwinder) + basic_machine=armv4l-rebel + os=-linux + ;; + news | news700 | news800 | news900) + basic_machine=m68k-sony + os=-newsos + ;; + news1000) + basic_machine=m68030-sony + os=-newsos + ;; + news-3600 | risc-news) + basic_machine=mips-sony + os=-newsos + ;; + necv70) + basic_machine=v70-nec + os=-sysv + ;; + next | m*-next ) + basic_machine=m68k-next + case $os in + -nextstep* ) + ;; + -ns2*) + os=-nextstep2 + ;; + *) + os=-nextstep3 + ;; + esac + ;; + nh3000) + basic_machine=m68k-harris + os=-cxux + ;; + nh[45]000) + basic_machine=m88k-harris + os=-cxux + ;; + nindy960) + basic_machine=i960-intel + os=-nindy + ;; + mon960) + basic_machine=i960-intel + os=-mon960 + ;; + nonstopux) + basic_machine=mips-compaq + os=-nonstopux + ;; + np1) + basic_machine=np1-gould + ;; + nsr-tandem) + basic_machine=nsr-tandem + ;; + op50n-* | op60c-*) + basic_machine=hppa1.1-oki + os=-proelf + ;; + openrisc | openrisc-*) + basic_machine=or32-unknown + ;; + os400) + basic_machine=powerpc-ibm + os=-os400 + ;; + OSE68000 | ose68000) + basic_machine=m68000-ericsson + os=-ose + ;; + os68k) + basic_machine=m68k-none + os=-os68k + ;; + pa-hitachi) + basic_machine=hppa1.1-hitachi + os=-hiuxwe2 + ;; + paragon) + basic_machine=i860-intel + os=-osf + ;; + parisc) + basic_machine=hppa-unknown + os=-linux + ;; + parisc-*) + basic_machine=hppa-`echo $basic_machine | sed 's/^[^-]*-//'` + os=-linux + ;; + pbd) + basic_machine=sparc-tti + ;; + pbb) + basic_machine=m68k-tti + ;; + pc532 | pc532-*) + basic_machine=ns32k-pc532 + ;; + pc98) + basic_machine=i386-pc + ;; + pc98-*) + basic_machine=i386-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + pentium | p5 | k5 | k6 | nexgen | viac3) + basic_machine=i586-pc + ;; + pentiumpro | p6 | 6x86 | athlon | athlon_*) + basic_machine=i686-pc + ;; + pentiumii | pentium2 | pentiumiii | pentium3) + basic_machine=i686-pc + ;; + pentium4) + basic_machine=i786-pc + ;; + pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*) + basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + pentiumpro-* | p6-* | 6x86-* | athlon-*) + basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*) + basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + pentium4-*) + basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + pn) + basic_machine=pn-gould + ;; + power) basic_machine=power-ibm + ;; + ppc) basic_machine=powerpc-unknown + ;; + ppc-*) basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + ppcle | powerpclittle | ppc-le | powerpc-little) + basic_machine=powerpcle-unknown + ;; + ppcle-* | powerpclittle-*) + basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + ppc64) basic_machine=powerpc64-unknown + ;; + ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + ppc64le | powerpc64little | ppc64-le | powerpc64-little) + basic_machine=powerpc64le-unknown + ;; + ppc64le-* | powerpc64little-*) + basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + ps2) + basic_machine=i386-ibm + ;; + pw32) + basic_machine=i586-unknown + os=-pw32 + ;; + rdos) + basic_machine=i386-pc + os=-rdos + ;; + rom68k) + basic_machine=m68k-rom68k + os=-coff + ;; + rm[46]00) + basic_machine=mips-siemens + ;; + rtpc | rtpc-*) + basic_machine=romp-ibm + ;; + s390 | s390-*) + basic_machine=s390-ibm + ;; + s390x | s390x-*) + basic_machine=s390x-ibm + ;; + sa29200) + basic_machine=a29k-amd + os=-udi + ;; + sb1) + basic_machine=mipsisa64sb1-unknown + ;; + sb1el) + basic_machine=mipsisa64sb1el-unknown + ;; + sde) + basic_machine=mipsisa32-sde + os=-elf + ;; + sei) + basic_machine=mips-sei + os=-seiux + ;; + sequent) + basic_machine=i386-sequent + ;; + sh) + basic_machine=sh-hitachi + os=-hms + ;; + sh5el) + basic_machine=sh5le-unknown + ;; + sh64) + basic_machine=sh64-unknown + ;; + sparclite-wrs | simso-wrs) + basic_machine=sparclite-wrs + os=-vxworks + ;; + sps7) + basic_machine=m68k-bull + os=-sysv2 + ;; + spur) + basic_machine=spur-unknown + ;; + st2000) + basic_machine=m68k-tandem + ;; + stratus) + basic_machine=i860-stratus + os=-sysv4 + ;; + sun2) + basic_machine=m68000-sun + ;; + sun2os3) + basic_machine=m68000-sun + os=-sunos3 + ;; + sun2os4) + basic_machine=m68000-sun + os=-sunos4 + ;; + sun3os3) + basic_machine=m68k-sun + os=-sunos3 + ;; + sun3os4) + basic_machine=m68k-sun + os=-sunos4 + ;; + sun4os3) + basic_machine=sparc-sun + os=-sunos3 + ;; + sun4os4) + basic_machine=sparc-sun + os=-sunos4 + ;; + sun4sol2) + basic_machine=sparc-sun + os=-solaris2 + ;; + sun3 | sun3-*) + basic_machine=m68k-sun + ;; + sun4) + basic_machine=sparc-sun + ;; + sun386 | sun386i | roadrunner) + basic_machine=i386-sun + ;; + sv1) + basic_machine=sv1-cray + os=-unicos + ;; + symmetry) + basic_machine=i386-sequent + os=-dynix + ;; + t3e) + basic_machine=alphaev5-cray + os=-unicos + ;; + t90) + basic_machine=t90-cray + os=-unicos + ;; + tic54x | c54x*) + basic_machine=tic54x-unknown + os=-coff + ;; + tic55x | c55x*) + basic_machine=tic55x-unknown + os=-coff + ;; + tic6x | c6x*) + basic_machine=tic6x-unknown + os=-coff + ;; + tile*) + basic_machine=tile-unknown + os=-linux-gnu + ;; + tx39) + basic_machine=mipstx39-unknown + ;; + tx39el) + basic_machine=mipstx39el-unknown + ;; + toad1) + basic_machine=pdp10-xkl + os=-tops20 + ;; + tower | tower-32) + basic_machine=m68k-ncr + ;; + tpf) + basic_machine=s390x-ibm + os=-tpf + ;; + udi29k) + basic_machine=a29k-amd + os=-udi + ;; + ultra3) + basic_machine=a29k-nyu + os=-sym1 + ;; + v810 | necv810) + basic_machine=v810-nec + os=-none + ;; + vaxv) + basic_machine=vax-dec + os=-sysv + ;; + vms) + basic_machine=vax-dec + os=-vms + ;; + vpp*|vx|vx-*) + basic_machine=f301-fujitsu + ;; + vxworks960) + basic_machine=i960-wrs + os=-vxworks + ;; + vxworks68) + basic_machine=m68k-wrs + os=-vxworks + ;; + vxworks29k) + basic_machine=a29k-wrs + os=-vxworks + ;; + w65*) + basic_machine=w65-wdc + os=-none + ;; + w89k-*) + basic_machine=hppa1.1-winbond + os=-proelf + ;; + xbox) + basic_machine=i686-pc + os=-mingw32 + ;; + xps | xps100) + basic_machine=xps100-honeywell + ;; + ymp) + basic_machine=ymp-cray + os=-unicos + ;; + z8k-*-coff) + basic_machine=z8k-unknown + os=-sim + ;; + z80-*-coff) + basic_machine=z80-unknown + os=-sim + ;; + none) + basic_machine=none-none + os=-none + ;; + +# Here we handle the default manufacturer of certain CPU types. It is in +# some cases the only manufacturer, in others, it is the most popular. + w89k) + basic_machine=hppa1.1-winbond + ;; + op50n) + basic_machine=hppa1.1-oki + ;; + op60c) + basic_machine=hppa1.1-oki + ;; + romp) + basic_machine=romp-ibm + ;; + mmix) + basic_machine=mmix-knuth + ;; + rs6000) + basic_machine=rs6000-ibm + ;; + vax) + basic_machine=vax-dec + ;; + pdp10) + # there are many clones, so DEC is not a safe bet + basic_machine=pdp10-unknown + ;; + pdp11) + basic_machine=pdp11-dec + ;; + we32k) + basic_machine=we32k-att + ;; + sh[1234] | sh[24]a | sh[24]aeb | sh[34]eb | sh[1234]le | sh[23]ele) + basic_machine=sh-unknown + ;; + sparc | sparcv8 | sparcv9 | sparcv9b | sparcv9v) + basic_machine=sparc-sun + ;; + cydra) + basic_machine=cydra-cydrome + ;; + orion) + basic_machine=orion-highlevel + ;; + orion105) + basic_machine=clipper-highlevel + ;; + mac | mpw | mac-mpw) + basic_machine=m68k-apple + ;; + pmac | pmac-mpw) + basic_machine=powerpc-apple + ;; + *-unknown) + # Make sure to match an already-canonicalized machine name. + ;; + *) + echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2 + exit 1 + ;; +esac + +# Here we canonicalize certain aliases for manufacturers. +case $basic_machine in + *-digital*) + basic_machine=`echo $basic_machine | sed 's/digital.*/dec/'` + ;; + *-commodore*) + basic_machine=`echo $basic_machine | sed 's/commodore.*/cbm/'` + ;; + *) + ;; +esac + +# Decode manufacturer-specific aliases for certain operating systems. + +if [ x"$os" != x"" ] +then +case $os in + # First match some system type aliases + # that might get confused with valid system types. + # -solaris* is a basic system type, with this one exception. + -auroraux) + os=-auroraux + ;; + -solaris1 | -solaris1.*) + os=`echo $os | sed -e 's|solaris1|sunos4|'` + ;; + -solaris) + os=-solaris2 + ;; + -svr4*) + os=-sysv4 + ;; + -unixware*) + os=-sysv4.2uw + ;; + -gnu/linux*) + os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'` + ;; + # First accept the basic system types. + # The portable systems comes first. + # Each alternative MUST END IN A *, to match a version number. + # -sysv* is not here because it comes later, after sysvr4. + -gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \ + | -*vms* | -sco* | -esix* | -isc* | -aix* | -cnk* | -sunos | -sunos[34]*\ + | -hpux* | -unos* | -osf* | -luna* | -dgux* | -auroraux* | -solaris* \ + | -sym* | -kopensolaris* \ + | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \ + | -aos* | -aros* \ + | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \ + | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \ + | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \ + | -openbsd* | -solidbsd* \ + | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \ + | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \ + | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \ + | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \ + | -chorusos* | -chorusrdb* | -cegcc* \ + | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \ + | -mingw32* | -linux-gnu* | -linux-newlib* | -linux-uclibc* \ + | -uxpv* | -beos* | -mpeix* | -udk* \ + | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \ + | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \ + | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \ + | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \ + | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \ + | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \ + | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es*) + # Remember, each alternative MUST END IN *, to match a version number. + ;; + -qnx*) + case $basic_machine in + x86-* | i*86-*) + ;; + *) + os=-nto$os + ;; + esac + ;; + -nto-qnx*) + ;; + -nto*) + os=`echo $os | sed -e 's|nto|nto-qnx|'` + ;; + -sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \ + | -windows* | -osx | -abug | -netware* | -os9* | -beos* | -haiku* \ + | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*) + ;; + -mac*) + os=`echo $os | sed -e 's|mac|macos|'` + ;; + -linux-dietlibc) + os=-linux-dietlibc + ;; + -linux*) + os=`echo $os | sed -e 's|linux|linux-gnu|'` + ;; + -sunos5*) + os=`echo $os | sed -e 's|sunos5|solaris2|'` + ;; + -sunos6*) + os=`echo $os | sed -e 's|sunos6|solaris3|'` + ;; + -opened*) + os=-openedition + ;; + -os400*) + os=-os400 + ;; + -wince*) + os=-wince + ;; + -osfrose*) + os=-osfrose + ;; + -osf*) + os=-osf + ;; + -utek*) + os=-bsd + ;; + -dynix*) + os=-bsd + ;; + -acis*) + os=-aos + ;; + -atheos*) + os=-atheos + ;; + -syllable*) + os=-syllable + ;; + -386bsd) + os=-bsd + ;; + -ctix* | -uts*) + os=-sysv + ;; + -nova*) + os=-rtmk-nova + ;; + -ns2 ) + os=-nextstep2 + ;; + -nsk*) + os=-nsk + ;; + # Preserve the version number of sinix5. + -sinix5.*) + os=`echo $os | sed -e 's|sinix|sysv|'` + ;; + -sinix*) + os=-sysv4 + ;; + -tpf*) + os=-tpf + ;; + -triton*) + os=-sysv3 + ;; + -oss*) + os=-sysv3 + ;; + -svr4) + os=-sysv4 + ;; + -svr3) + os=-sysv3 + ;; + -sysvr4) + os=-sysv4 + ;; + # This must come after -sysvr4. + -sysv*) + ;; + -ose*) + os=-ose + ;; + -es1800*) + os=-ose + ;; + -xenix) + os=-xenix + ;; + -*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*) + os=-mint + ;; + -aros*) + os=-aros + ;; + -kaos*) + os=-kaos + ;; + -zvmoe) + os=-zvmoe + ;; + -dicos*) + os=-dicos + ;; + -nacl*) + ;; + -none) + ;; + *) + # Get rid of the `-' at the beginning of $os. + os=`echo $os | sed 's/[^-]*-//'` + echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2 + exit 1 + ;; +esac +else + +# Here we handle the default operating systems that come with various machines. +# The value should be what the vendor currently ships out the door with their +# machine or put another way, the most popular os provided with the machine. + +# Note that if you're going to try to match "-MANUFACTURER" here (say, +# "-sun"), then you have to tell the case statement up towards the top +# that MANUFACTURER isn't an operating system. Otherwise, code above +# will signal an error saying that MANUFACTURER isn't an operating +# system, and we'll never get to this point. + +case $basic_machine in + score-*) + os=-elf + ;; + spu-*) + os=-elf + ;; + *-acorn) + os=-riscix1.2 + ;; + arm*-rebel) + os=-linux + ;; + arm*-semi) + os=-aout + ;; + c4x-* | tic4x-*) + os=-coff + ;; + # This must come before the *-dec entry. + pdp10-*) + os=-tops20 + ;; + pdp11-*) + os=-none + ;; + *-dec | vax-*) + os=-ultrix4.2 + ;; + m68*-apollo) + os=-domain + ;; + i386-sun) + os=-sunos4.0.2 + ;; + m68000-sun) + os=-sunos3 + # This also exists in the configure program, but was not the + # default. + # os=-sunos4 + ;; + m68*-cisco) + os=-aout + ;; + mep-*) + os=-elf + ;; + mips*-cisco) + os=-elf + ;; + mips*-*) + os=-elf + ;; + or32-*) + os=-coff + ;; + *-tti) # must be before sparc entry or we get the wrong os. + os=-sysv3 + ;; + sparc-* | *-sun) + os=-sunos4.1.1 + ;; + *-be) + os=-beos + ;; + *-haiku) + os=-haiku + ;; + *-ibm) + os=-aix + ;; + *-knuth) + os=-mmixware + ;; + *-wec) + os=-proelf + ;; + *-winbond) + os=-proelf + ;; + *-oki) + os=-proelf + ;; + *-hp) + os=-hpux + ;; + *-hitachi) + os=-hiux + ;; + i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent) + os=-sysv + ;; + *-cbm) + os=-amigaos + ;; + *-dg) + os=-dgux + ;; + *-dolphin) + os=-sysv3 + ;; + m68k-ccur) + os=-rtu + ;; + m88k-omron*) + os=-luna + ;; + *-next ) + os=-nextstep + ;; + *-sequent) + os=-ptx + ;; + *-crds) + os=-unos + ;; + *-ns) + os=-genix + ;; + i370-*) + os=-mvs + ;; + *-next) + os=-nextstep3 + ;; + *-gould) + os=-sysv + ;; + *-highlevel) + os=-bsd + ;; + *-encore) + os=-bsd + ;; + *-sgi) + os=-irix + ;; + *-siemens) + os=-sysv4 + ;; + *-masscomp) + os=-rtu + ;; + f30[01]-fujitsu | f700-fujitsu) + os=-uxpv + ;; + *-rom68k) + os=-coff + ;; + *-*bug) + os=-coff + ;; + *-apple) + os=-macos + ;; + *-atari*) + os=-mint + ;; + *) + os=-none + ;; +esac +fi + +# Here we handle the case where we know the os, and the CPU type, but not the +# manufacturer. We pick the logical manufacturer. +vendor=unknown +case $basic_machine in + *-unknown) + case $os in + -riscix*) + vendor=acorn + ;; + -sunos*) + vendor=sun + ;; + -cnk*|-aix*) + vendor=ibm + ;; + -beos*) + vendor=be + ;; + -hpux*) + vendor=hp + ;; + -mpeix*) + vendor=hp + ;; + -hiux*) + vendor=hitachi + ;; + -unos*) + vendor=crds + ;; + -dgux*) + vendor=dg + ;; + -luna*) + vendor=omron + ;; + -genix*) + vendor=ns + ;; + -mvs* | -opened*) + vendor=ibm + ;; + -os400*) + vendor=ibm + ;; + -ptx*) + vendor=sequent + ;; + -tpf*) + vendor=ibm + ;; + -vxsim* | -vxworks* | -windiss*) + vendor=wrs + ;; + -aux*) + vendor=apple + ;; + -hms*) + vendor=hitachi + ;; + -mpw* | -macos*) + vendor=apple + ;; + -*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*) + vendor=atari + ;; + -vos*) + vendor=stratus + ;; + esac + basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"` + ;; +esac + +echo $basic_machine$os +exit + +# Local variables: +# eval: (add-hook 'write-file-hooks 'time-stamp) +# time-stamp-start: "timestamp='" +# time-stamp-format: "%:y-%02m-%02d" +# time-stamp-end: "'" +# End: diff --git a/configure b/configure new file mode 100755 index 0000000..29e0f35 --- /dev/null +++ b/configure @@ -0,0 +1,9080 @@ +#! /bin/sh +# From configure.in Revision: 1.168 . +# Guess values for system-dependent variables and create Makefiles. +# Generated by GNU Autoconf 2.67. +# +# +# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, +# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software +# Foundation, Inc. +# +# +# This configure script is free software; the Free Software Foundation +# gives unlimited permission to copy, distribute and modify it. +## -------------------- ## +## M4sh Initialization. ## +## -------------------- ## + +# Be more Bourne compatible +DUALCASE=1; export DUALCASE # for MKS sh +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi + + +as_nl=' +' +export as_nl +# Printing a long string crashes Solaris 7 /usr/bin/printf. +as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo +# Prefer a ksh shell builtin over an external printf program on Solaris, +# but without wasting forks for bash or zsh. +if test -z "$BASH_VERSION$ZSH_VERSION" \ + && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='print -r --' + as_echo_n='print -rn --' +elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='printf %s\n' + as_echo_n='printf %s' +else + if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then + as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' + as_echo_n='/usr/ucb/echo -n' + else + as_echo_body='eval expr "X$1" : "X\\(.*\\)"' + as_echo_n_body='eval + arg=$1; + case $arg in #( + *"$as_nl"*) + expr "X$arg" : "X\\(.*\\)$as_nl"; + arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; + esac; + expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" + ' + export as_echo_n_body + as_echo_n='sh -c $as_echo_n_body as_echo' + fi + export as_echo_body + as_echo='sh -c $as_echo_body as_echo' +fi + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# IFS +# We need space, tab and new line, in precisely that order. Quoting is +# there to prevent editors from complaining about space-tab. +# (If _AS_PATH_WALK were called with IFS unset, it would disable word +# splitting by setting IFS to empty value.) +IFS=" "" $as_nl" + +# Find who we are. Look in the path if we contain no directory separator. +case $0 in #(( + *[\\/]* ) as_myself=$0 ;; + *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break + done +IFS=$as_save_IFS + + ;; +esac +# We did not find ourselves, most probably we were run as `sh COMMAND' +# in which case we are not to be found in the path. +if test "x$as_myself" = x; then + as_myself=$0 +fi +if test ! -f "$as_myself"; then + $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2 + exit 1 +fi + +# Unset variables that we do not need and which cause bugs (e.g. in +# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1" +# suppresses any "Segmentation fault" message there. '((' could +# trigger a bug in pdksh 5.2.14. +for as_var in BASH_ENV ENV MAIL MAILPATH +do eval test x\${$as_var+set} = xset \ + && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || : +done +PS1='$ ' +PS2='> ' +PS4='+ ' + +# NLS nuisances. +LC_ALL=C +export LC_ALL +LANGUAGE=C +export LANGUAGE + +# CDPATH. +(unset CDPATH) >/dev/null 2>&1 && unset CDPATH + +if test "x$CONFIG_SHELL" = x; then + as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which + # is contrary to our usage. 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Invocation command line was + + $ $0 $@ + +_ACEOF +exec 5>>config.log +{ +cat <<_ASUNAME +## --------- ## +## Platform. ## +## --------- ## + +hostname = `(hostname || uname -n) 2>/dev/null | sed 1q` +uname -m = `(uname -m) 2>/dev/null || echo unknown` +uname -r = `(uname -r) 2>/dev/null || echo unknown` +uname -s = `(uname -s) 2>/dev/null || echo unknown` +uname -v = `(uname -v) 2>/dev/null || echo unknown` + +/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown` +/bin/uname -X = `(/bin/uname -X) 2>/dev/null || echo unknown` + +/bin/arch = `(/bin/arch) 2>/dev/null || echo unknown` +/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null || echo unknown` +/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown` +/usr/bin/hostinfo = `(/usr/bin/hostinfo) 2>/dev/null || echo unknown` +/bin/machine = `(/bin/machine) 2>/dev/null || echo unknown` +/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null || echo unknown` +/bin/universe = `(/bin/universe) 2>/dev/null || echo unknown` + +_ASUNAME + +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + $as_echo "PATH: $as_dir" + done +IFS=$as_save_IFS + +} >&5 + +cat >&5 <<_ACEOF + + +## ----------- ## +## Core tests. ## +## ----------- ## + +_ACEOF + + +# Keep a trace of the command line. +# Strip out --no-create and --no-recursion so they do not pile up. +# Strip out --silent because we don't want to record it for future runs. +# Also quote any args containing shell meta-characters. +# Make two passes to allow for proper duplicate-argument suppression. +ac_configure_args= +ac_configure_args0= +ac_configure_args1= +ac_must_keep_next=false +for ac_pass in 1 2 +do + for ac_arg + do + case $ac_arg in + -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;; + -q | -quiet | --quiet | --quie | --qui | --qu | --q \ + | -silent | --silent | --silen | --sile | --sil) + continue ;; + *\'*) + ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;; + esac + case $ac_pass in + 1) as_fn_append ac_configure_args0 " '$ac_arg'" ;; + 2) + as_fn_append ac_configure_args1 " '$ac_arg'" + if test $ac_must_keep_next = true; then + ac_must_keep_next=false # Got value, back to normal. + else + case $ac_arg in + *=* | --config-cache | -C | -disable-* | --disable-* \ + | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \ + | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \ + | -with-* | --with-* | -without-* | --without-* | --x) + case "$ac_configure_args0 " in + "$ac_configure_args1"*" '$ac_arg' "* ) continue ;; + esac + ;; + -* ) ac_must_keep_next=true ;; + esac + fi + as_fn_append ac_configure_args " '$ac_arg'" + ;; + esac + done +done +{ ac_configure_args0=; unset ac_configure_args0;} +{ ac_configure_args1=; unset ac_configure_args1;} + +# When interrupted or exit'd, cleanup temporary files, and complete +# config.log. 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" >&6; } +if test "${ac_cv_prog_SHLICC2+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$SHLICC2"; then + ac_cv_prog_SHLICC2="$SHLICC2" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_SHLICC2="yes" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + test -z "$ac_cv_prog_SHLICC2" && ac_cv_prog_SHLICC2="no" +fi +fi +SHLICC2=$ac_cv_prog_SHLICC2 +if test -n "$SHLICC2"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $SHLICC2" >&5 +$as_echo "$SHLICC2" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + if test $SHLICC2 = yes ; then + CC=shlicc2 + export CC + fi + ;; + esac + fi + if test -z "$CC" -a "$with_gcc" = no ; then + CC=cc + export CC + fi + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args. +set dummy ${ac_tool_prefix}gcc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if test "${ac_cv_prog_CC+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_CC="${ac_tool_prefix}gcc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_CC"; then + ac_ct_CC=$CC + # Extract the first word of "gcc", so it can be a program name with args. +set dummy gcc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if test "${ac_cv_prog_ac_ct_CC+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_ac_ct_CC="gcc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +$as_echo "$ac_ct_CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + CC=$ac_ct_CC + fi +else + CC="$ac_cv_prog_CC" +fi + +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args. +set dummy ${ac_tool_prefix}cc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if test "${ac_cv_prog_CC+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_CC="${ac_tool_prefix}cc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + fi +fi +if test -z "$CC"; then + # Extract the first word of "cc", so it can be a program name with args. +set dummy cc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if test "${ac_cv_prog_CC+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else + ac_prog_rejected=no +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then + ac_prog_rejected=yes + continue + fi + ac_cv_prog_CC="cc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +if test $ac_prog_rejected = yes; then + # We found a bogon in the path, so make sure we never use it. + set dummy $ac_cv_prog_CC + shift + if test $# != 0; then + # We chose a different compiler from the bogus one. + # However, it has the same basename, so the bogon will be chosen + # first if we set CC to just the basename; use the full file name. + shift + ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@" + fi +fi +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + for ac_prog in cl.exe + do + # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. +set dummy $ac_tool_prefix$ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if test "${ac_cv_prog_CC+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_CC="$ac_tool_prefix$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$CC" && break + done +fi +if test -z "$CC"; then + ac_ct_CC=$CC + for ac_prog in cl.exe +do + # Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if test "${ac_cv_prog_ac_ct_CC+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_ac_ct_CC="$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +$as_echo "$ac_ct_CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$ac_ct_CC" && break +done + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + CC=$ac_ct_CC + fi +fi + +fi + + +test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "no acceptable C compiler found in \$PATH +See \`config.log' for more details" "$LINENO" 5 ; } + +# Provide some information about the compiler. +$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5 +set X $ac_compile +ac_compiler=$2 +for ac_option in --version -v -V -qversion; do + { { ac_try="$ac_compiler $ac_option >&5" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_compiler $ac_option >&5") 2>conftest.err + ac_status=$? + if test -s conftest.err; then + sed '10a\ +... rest of stderr output deleted ... + 10q' conftest.err >conftest.er1 + cat conftest.er1 >&5 + fi + rm -f conftest.er1 conftest.err + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } +done + +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +ac_clean_files_save=$ac_clean_files +ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out" +# Try to create an executable without -o first, disregard a.out. +# It will help us diagnose broken compilers, and finding out an intuition +# of exeext. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5 +$as_echo_n "checking whether the C compiler works... " >&6; } +ac_link_default=`$as_echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'` + +# The possible output files: +ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*" + +ac_rmfiles= +for ac_file in $ac_files +do + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;; + * ) ac_rmfiles="$ac_rmfiles $ac_file";; + esac +done +rm -f $ac_rmfiles + +if { { ac_try="$ac_link_default" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_link_default") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then : + # Autoconf-2.13 could set the ac_cv_exeext variable to `no'. +# So ignore a value of `no', otherwise this would lead to `EXEEXT = no' +# in a Makefile. We should not override ac_cv_exeext if it was cached, +# so that the user can short-circuit this test for compilers unknown to +# Autoconf. +for ac_file in $ac_files '' +do + test -f "$ac_file" || continue + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) + ;; + [ab].out ) + # We found the default executable, but exeext='' is most + # certainly right. + break;; + *.* ) + if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no; + then :; else + ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'` + fi + # We set ac_cv_exeext here because the later test for it is not + # safe: cross compilers may not add the suffix if given an `-o' + # argument, so we may need to know it at that point already. + # Even if this section looks crufty: it has the advantage of + # actually working. + break;; + * ) + break;; + esac +done +test "$ac_cv_exeext" = no && ac_cv_exeext= + +else + ac_file='' +fi +if test -z "$ac_file"; then : + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +$as_echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error 77 "C compiler cannot create executables +See \`config.log' for more details" "$LINENO" 5 ; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5 +$as_echo_n "checking for C compiler default output file name... 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For instance with Cygwin, `ls conftest' will +# work properly (i.e., refer to `conftest.exe'), while it won't with +# `rm'. +for ac_file in conftest.exe conftest conftest.*; do + test -f "$ac_file" || continue + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;; + *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'` + break;; + * ) break;; + esac +done +else + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "cannot compute suffix of executables: cannot compile and link +See \`config.log' for more details" "$LINENO" 5 ; } +fi +rm -f conftest conftest$ac_cv_exeext +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5 +$as_echo "$ac_cv_exeext" >&6; } + +rm -f conftest.$ac_ext +EXEEXT=$ac_cv_exeext +ac_exeext=$EXEEXT +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +int +main () +{ +FILE *f = fopen ("conftest.out", "w"); + return ferror (f) || fclose (f) != 0; + + ; + return 0; +} +_ACEOF +ac_clean_files="$ac_clean_files conftest.out" +# Check that the compiler produces executables we can run. If not, either +# the compiler is broken, or we cross compile. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5 +$as_echo_n "checking whether we are cross compiling... " >&6; } +if test "$cross_compiling" != yes; then + { { ac_try="$ac_link" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_link") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } + if { ac_try='./conftest$ac_cv_exeext' + { { case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; }; then + cross_compiling=no + else + if test "$cross_compiling" = maybe; then + cross_compiling=yes + else + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "cannot run C compiled programs. +If you meant to cross compile, use \`--host'. +See \`config.log' for more details" "$LINENO" 5 ; } + fi + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5 +$as_echo "$cross_compiling" >&6; } + +rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out +ac_clean_files=$ac_clean_files_save +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5 +$as_echo_n "checking for suffix of object files... " >&6; } +if test "${ac_cv_objext+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +rm -f conftest.o conftest.obj +if { { ac_try="$ac_compile" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_compile") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then : + for ac_file in conftest.o conftest.obj conftest.*; do + test -f "$ac_file" || continue; + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;; + *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'` + break;; + esac +done +else + $as_echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "cannot compute suffix of object files: cannot compile +See \`config.log' for more details" "$LINENO" 5 ; } +fi +rm -f conftest.$ac_cv_objext conftest.$ac_ext +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5 +$as_echo "$ac_cv_objext" >&6; } +OBJEXT=$ac_cv_objext +ac_objext=$OBJEXT +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5 +$as_echo_n "checking whether we are using the GNU C compiler... " >&6; } +if test "${ac_cv_c_compiler_gnu+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ +#ifndef __GNUC__ + choke me +#endif + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_compiler_gnu=yes +else + ac_compiler_gnu=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +ac_cv_c_compiler_gnu=$ac_compiler_gnu + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5 +$as_echo "$ac_cv_c_compiler_gnu" >&6; } +if test $ac_compiler_gnu = yes; then + GCC=yes +else + GCC= +fi +ac_test_CFLAGS=${CFLAGS+set} +ac_save_CFLAGS=$CFLAGS +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5 +$as_echo_n "checking whether $CC accepts -g... " >&6; } +if test "${ac_cv_prog_cc_g+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_save_c_werror_flag=$ac_c_werror_flag + ac_c_werror_flag=yes + ac_cv_prog_cc_g=no + CFLAGS="-g" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_prog_cc_g=yes +else + CFLAGS="" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + +else + ac_c_werror_flag=$ac_save_c_werror_flag + CFLAGS="-g" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_prog_cc_g=yes +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + ac_c_werror_flag=$ac_save_c_werror_flag +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5 +$as_echo "$ac_cv_prog_cc_g" >&6; } +if test "$ac_test_CFLAGS" = set; then + CFLAGS=$ac_save_CFLAGS +elif test $ac_cv_prog_cc_g = yes; then + if test "$GCC" = yes; then + CFLAGS="-g -O2" + else + CFLAGS="-g" + fi +else + if test "$GCC" = yes; then + CFLAGS="-O2" + else + CFLAGS= + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5 +$as_echo_n "checking for $CC option to accept ISO C89... " >&6; } +if test "${ac_cv_prog_cc_c89+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_cv_prog_cc_c89=no +ac_save_CC=$CC +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +#include +#include +#include +/* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */ +struct buf { int x; }; +FILE * (*rcsopen) (struct buf *, struct stat *, int); +static char *e (p, i) + char **p; + int i; +{ + return p[i]; +} +static char *f (char * (*g) (char **, int), char **p, ...) +{ + char *s; + va_list v; + va_start (v,p); + s = g (p, va_arg (v,int)); + va_end (v); + return s; +} + +/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default. It has + function prototypes and stuff, but not '\xHH' hex character constants. + These don't provoke an error unfortunately, instead are silently treated + as 'x'. The following induces an error, until -std is added to get + proper ANSI mode. Curiously '\x00'!='x' always comes out true, for an + array size at least. It's necessary to write '\x00'==0 to get something + that's true only with -std. */ +int osf4_cc_array ['\x00' == 0 ? 1 : -1]; + +/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters + inside strings and character constants. */ +#define FOO(x) 'x' +int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1]; + +int test (int i, double x); +struct s1 {int (*f) (int a);}; +struct s2 {int (*f) (double a);}; +int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int); +int argc; +char **argv; +int +main () +{ +return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]; + ; + return 0; +} +_ACEOF +for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \ + -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__" +do + CC="$ac_save_CC $ac_arg" + if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_prog_cc_c89=$ac_arg +fi +rm -f core conftest.err conftest.$ac_objext + test "x$ac_cv_prog_cc_c89" != "xno" && break +done +rm -f conftest.$ac_ext +CC=$ac_save_CC + +fi +# AC_CACHE_VAL +case "x$ac_cv_prog_cc_c89" in + x) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5 +$as_echo "none needed" >&6; } ;; + xno) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5 +$as_echo "unsupported" >&6; } ;; + *) + CC="$CC $ac_cv_prog_cc_c89" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5 +$as_echo "$ac_cv_prog_cc_c89" >&6; } ;; +esac +if test "x$ac_cv_prog_cc_c89" != xno; then : + +fi + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + + + + + + if test "$GCC" = yes ; then + if test "$SHLICC2" = yes ; then + ac_cv_lbl_gcc_vers=2 + V_CCOPT="-O2" + else + { $as_echo "$as_me:${as_lineno-$LINENO}: checking gcc version" >&5 +$as_echo_n "checking gcc version... " >&6; } + if test "${ac_cv_lbl_gcc_vers+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_cv_lbl_gcc_vers=`$CC -v 2>&1 | \ + sed -e '/^gcc version /!d' \ + -e 's/^gcc version //' \ + -e 's/ .*//' -e 's/^[^0-9]*//' \ + -e 's/\..*//'` +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_gcc_vers" >&5 +$as_echo "$ac_cv_lbl_gcc_vers" >&6; } + if test $ac_cv_lbl_gcc_vers -gt 1 ; then + V_CCOPT="-O2" + fi + fi + else + { $as_echo "$as_me:${as_lineno-$LINENO}: checking that $CC handles ansi prototypes" >&5 +$as_echo_n "checking that $CC handles ansi prototypes... " >&6; } + if test "${ac_cv_lbl_cc_ansi_prototypes+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +int +main () +{ +int frob(int, char *) + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_lbl_cc_ansi_prototypes=yes +else + ac_cv_lbl_cc_ansi_prototypes=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_cc_ansi_prototypes" >&5 +$as_echo "$ac_cv_lbl_cc_ansi_prototypes" >&6; } + if test $ac_cv_lbl_cc_ansi_prototypes = no ; then + case "$host_os" in + + hpux*) + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for HP-UX ansi compiler ($CC -Aa -D_HPUX_SOURCE)" >&5 +$as_echo_n "checking for HP-UX ansi compiler ($CC -Aa -D_HPUX_SOURCE)... " >&6; } + savedcflags="$CFLAGS" + CFLAGS="-Aa -D_HPUX_SOURCE $CFLAGS" + if test "${ac_cv_lbl_cc_hpux_cc_aa+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +int +main () +{ +int frob(int, char *) + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_lbl_cc_hpux_cc_aa=yes +else + ac_cv_lbl_cc_hpux_cc_aa=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_cc_hpux_cc_aa" >&5 +$as_echo "$ac_cv_lbl_cc_hpux_cc_aa" >&6; } + if test $ac_cv_lbl_cc_hpux_cc_aa = no ; then + as_fn_error $? "see the INSTALL doc for more info" "$LINENO" 5 + fi + CFLAGS="$savedcflags" + V_CCOPT="-Aa $V_CCOPT" + +$as_echo "#define _HPUX_SOURCE 1" >>confdefs.h + + ;; + + osf*) + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ansi mode in DEC compiler ($CC -std1)" >&5 +$as_echo_n "checking for ansi mode in DEC compiler ($CC -std1)... " >&6; } + savedcflags="$CFLAGS" + CFLAGS="-std1" + if test "${ac_cv_lbl_cc_osf1_cc_std1+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +int +main () +{ +int frob(int, char *) + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_lbl_cc_osf1_cc_std1=yes +else + ac_cv_lbl_cc_osf1_cc_std1=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_cc_osf1_cc_std1" >&5 +$as_echo "$ac_cv_lbl_cc_osf1_cc_std1" >&6; } + if test $ac_cv_lbl_cc_osf1_cc_std1 = no ; then + as_fn_error $? "see the INSTALL doc for more info" "$LINENO" 5 + fi + CFLAGS="$savedcflags" + V_CCOPT="-std1 $V_CCOPT" + ;; + + *) + as_fn_error $? "see the INSTALL doc for more info" "$LINENO" 5 + ;; + esac + fi + V_INCLS="$V_INCLS -I/usr/local/include" + LDFLAGS="$LDFLAGS -L/usr/local/lib" + + case "$host_os" in + + irix*) + V_CCOPT="$V_CCOPT -xansi -signed -g3" + ;; + + osf*) + # + # Presumed to be DEC OSF/1, Digital UNIX, or + # Tru64 UNIX. + # + V_CCOPT="$V_CCOPT -g3" + ;; + + ultrix*) + { $as_echo "$as_me:${as_lineno-$LINENO}: checking that Ultrix $CC hacks const in prototypes" >&5 +$as_echo_n "checking that Ultrix $CC hacks const in prototypes... " >&6; } + if test "${ac_cv_lbl_cc_const_proto+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +int +main () +{ +struct a { int b; }; + void c(const struct a *) + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_lbl_cc_const_proto=yes +else + ac_cv_lbl_cc_const_proto=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_cc_const_proto" >&5 +$as_echo "$ac_cv_lbl_cc_const_proto" >&6; } + if test $ac_cv_lbl_cc_const_proto = no ; then + +$as_echo "#define const /**/" >>confdefs.h + + fi + ;; + esac + fi + + + if test "$GCC" = yes ; then + # + # On platforms where we build a shared library: + # + # add options to generate position-independent code, + # if necessary (it's the default in AIX and Darwin/OS X); + # + # define option to set the soname of the shared library, + # if the OS supports that; + # + # add options to specify, at link time, a directory to + # add to the run-time search path, if that's necessary. + # + V_SHLIB_CMD="\$(CC)" + V_SHLIB_OPT="-shared" + case "$host_os" in + + aix*) + ;; + + freebsd*|netbsd*|openbsd*|dragonfly*|linux*|osf*) + # + # Platforms where the linker is the GNU linker + # or accepts command-line arguments like + # those the GNU linker accepts. + # + # Some instruction sets require -fPIC on some + # operating systems. Check for them. If you + # have a combination that requires it, add it + # here. + # + PIC_OPT=-fpic + case "$host_cpu" in + + sparc64*) + case "$host_os" in + + freebsd*) + PIC_OPT=-fPIC + ;; + esac + ;; + esac + V_CCOPT="$V_CCOPT $PIC_OPT" + V_SONAME_OPT="-Wl,-soname," + V_RPATH_OPT="-Wl,-rpath," + ;; + + hpux*) + V_CCOPT="$V_CCOPT -fpic" + # + # XXX - this assumes GCC is using the HP linker, + # rather than the GNU linker, and that the "+h" + # option is used on all HP-UX platforms, both .sl + # and .so. + # + V_SONAME_OPT="-Wl,+h," + # + # By default, directories specifed with -L + # are added to the run-time search path, so + # we don't add them in pcap-config. + # + ;; + + solaris*) + V_CCOPT="$V_CCOPT -fpic" + # + # XXX - this assumes GCC is using the Sun linker, + # rather than the GNU linker. + # + V_SONAME_OPT="-Wl,-h," + V_RPATH_OPT="-Wl,-R," + ;; + esac + else + # + # Set the appropriate compiler flags and, on platforms + # where we build a shared library: + # + # add options to generate position-independent code, + # if necessary (it's the default in Darwin/OS X); + # + # if we generate ".so" shared libraries, define the + # appropriate options for building the shared library; + # + # add options to specify, at link time, a directory to + # add to the run-time search path, if that's necessary. + # + # Note: spaces after V_SONAME_OPT are significant; on + # some platforms the soname is passed with a GCC-like + # "-Wl,-soname,{soname}" option, with the soname part + # of the option, while on other platforms the C compiler + # driver takes it as a regular option with the soname + # following the option. The same applies to V_RPATH_OPT. + # + case "$host_os" in + + aix*) + V_SHLIB_CMD="\$(CC)" + V_SHLIB_OPT="-G -bnoentry -bexpall" + ;; + + freebsd*|netbsd*|openbsd*|dragonfly*|linux*) + # + # "cc" is GCC. + # + V_CCOPT="$V_CCOPT -fpic" + V_SHLIB_CMD="\$(CC)" + V_SHLIB_OPT="-shared" + V_SONAME_OPT="-Wl,-soname," + V_RPATH_OPT="-Wl,-rpath," + ;; + + hpux*) + V_CCOPT="$V_CCOPT +z" + V_SHLIB_CMD="\$(LD)" + V_SHLIB_OPT="-b" + V_SONAME_OPT="+h " + # + # By default, directories specifed with -L + # are added to the run-time search path, so + # we don't add them in pcap-config. + # + ;; + + osf*) + # + # Presumed to be DEC OSF/1, Digital UNIX, or + # Tru64 UNIX. + # + V_SHLIB_CMD="\$(CC)" + V_SHLIB_OPT="-shared" + V_SONAME_OPT="-soname " + V_RPATH_OPT="-rpath " + ;; + + solaris*) + V_CCOPT="$V_CCOPT -Kpic" + V_SHLIB_CMD="\$(CC)" + V_SHLIB_OPT="-G" + V_SONAME_OPT="-h " + V_RPATH_OPT="-R" + ;; + esac + fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for inline" >&5 +$as_echo_n "checking for inline... " >&6; } + save_CFLAGS="$CFLAGS" + CFLAGS="$V_CCOPT" + if test "${ac_cv_lbl_inline+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + + ac_cv_lbl_inline="" + ac_lbl_cc_inline=no + for ac_lbl_inline in inline __inline__ __inline + do + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#define inline $ac_lbl_inline + static inline struct iltest *foo(void); + struct iltest { + int iltest1; + int iltest2; + }; + + static inline struct iltest * + foo() + { + static struct iltest xxx; + + return &xxx; + } +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_lbl_cc_inline=yes +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + if test "$ac_lbl_cc_inline" = yes ; then + break; + fi + done + if test "$ac_lbl_cc_inline" = yes ; then + ac_cv_lbl_inline=$ac_lbl_inline + fi +fi + + CFLAGS="$save_CFLAGS" + if test ! -z "$ac_cv_lbl_inline" ; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_inline" >&5 +$as_echo "$ac_cv_lbl_inline" >&6; } + else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + fi + +cat >>confdefs.h <<_ACEOF +#define inline $ac_cv_lbl_inline +_ACEOF + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for __attribute__" >&5 +$as_echo_n "checking for __attribute__... " >&6; } +if test "${ac_cv___attribute__+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +#include + +static void foo(void) __attribute__ ((noreturn)); + +static void +foo(void) +{ + exit(1); +} + +int +main(int argc, char **argv) +{ + foo(); +} + +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv___attribute__=yes +else + ac_cv___attribute__=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + +if test "$ac_cv___attribute__" = "yes"; then + +$as_echo "#define HAVE___ATTRIBUTE__ 1" >>confdefs.h + + V_DEFS="$V_DEFS -D_U_=\"__attribute__((unused))\"" +else + V_DEFS="$V_DEFS -D_U_=\"\"" +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv___attribute__" >&5 +$as_echo "$ac_cv___attribute__" >&6; } + + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5 +$as_echo_n "checking how to run the C preprocessor... " >&6; } +# On Suns, sometimes $CPP names a directory. +if test -n "$CPP" && test -d "$CPP"; then + CPP= +fi +if test -z "$CPP"; then + if test "${ac_cv_prog_CPP+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + # Double quotes because CPP needs to be expanded + for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp" + do + ac_preproc_ok=false +for ac_c_preproc_warn_flag in '' yes +do + # Use a header file that comes with gcc, so configuring glibc + # with a fresh cross-compiler works. + # Prefer to if __STDC__ is defined, since + # exists even on freestanding compilers. + # On the NeXT, cc -E runs the code through the compiler's parser, + # not just through cpp. "Syntax error" is here to catch this case. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#ifdef __STDC__ +# include +#else +# include +#endif + Syntax error +_ACEOF +if ac_fn_c_try_cpp "$LINENO"; then : + +else + # Broken: fails on valid input. +continue +fi +rm -f conftest.err conftest.i conftest.$ac_ext + + # OK, works on sane cases. Now check whether nonexistent headers + # can be detected and how. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +_ACEOF +if ac_fn_c_try_cpp "$LINENO"; then : + # Broken: success on invalid input. +continue +else + # Passes both tests. +ac_preproc_ok=: +break +fi +rm -f conftest.err conftest.i conftest.$ac_ext + +done +# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped. +rm -f conftest.i conftest.err conftest.$ac_ext +if $ac_preproc_ok; then : + break +fi + + done + ac_cv_prog_CPP=$CPP + +fi + CPP=$ac_cv_prog_CPP +else + ac_cv_prog_CPP=$CPP +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5 +$as_echo "$CPP" >&6; } +ac_preproc_ok=false +for ac_c_preproc_warn_flag in '' yes +do + # Use a header file that comes with gcc, so configuring glibc + # with a fresh cross-compiler works. + # Prefer to if __STDC__ is defined, since + # exists even on freestanding compilers. + # On the NeXT, cc -E runs the code through the compiler's parser, + # not just through cpp. "Syntax error" is here to catch this case. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#ifdef __STDC__ +# include +#else +# include +#endif + Syntax error +_ACEOF +if ac_fn_c_try_cpp "$LINENO"; then : + +else + # Broken: fails on valid input. +continue +fi +rm -f conftest.err conftest.i conftest.$ac_ext + + # OK, works on sane cases. Now check whether nonexistent headers + # can be detected and how. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +_ACEOF +if ac_fn_c_try_cpp "$LINENO"; then : + # Broken: success on invalid input. +continue +else + # Passes both tests. +ac_preproc_ok=: +break +fi +rm -f conftest.err conftest.i conftest.$ac_ext + +done +# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped. +rm -f conftest.i conftest.err conftest.$ac_ext +if $ac_preproc_ok; then : + +else + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "C preprocessor \"$CPP\" fails sanity check +See \`config.log' for more details" "$LINENO" 5 ; } +fi + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5 +$as_echo_n "checking for grep that handles long lines and -e... " >&6; } +if test "${ac_cv_path_GREP+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test -z "$GREP"; then + ac_path_GREP_found=false + # Loop through the user's path and test for each of PROGNAME-LIST + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_prog in grep ggrep; do + for ac_exec_ext in '' $ac_executable_extensions; do + ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext" + { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue +# Check for GNU ac_path_GREP and select it if it is found. + # Check for GNU $ac_path_GREP +case `"$ac_path_GREP" --version 2>&1` in +*GNU*) + ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;; +*) + ac_count=0 + $as_echo_n 0123456789 >"conftest.in" + while : + do + cat "conftest.in" "conftest.in" >"conftest.tmp" + mv "conftest.tmp" "conftest.in" + cp "conftest.in" "conftest.nl" + $as_echo 'GREP' >> "conftest.nl" + "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break + diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break + as_fn_arith $ac_count + 1 && ac_count=$as_val + if test $ac_count -gt ${ac_path_GREP_max-0}; then + # Best one so far, save it but keep looking for a better one + ac_cv_path_GREP="$ac_path_GREP" + ac_path_GREP_max=$ac_count + fi + # 10*(2^10) chars as input seems more than enough + test $ac_count -gt 10 && break + done + rm -f conftest.in conftest.tmp conftest.nl conftest.out;; +esac + + $ac_path_GREP_found && break 3 + done + done + done +IFS=$as_save_IFS + if test -z "$ac_cv_path_GREP"; then + as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5 + fi +else + ac_cv_path_GREP=$GREP +fi + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5 +$as_echo "$ac_cv_path_GREP" >&6; } + GREP="$ac_cv_path_GREP" + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5 +$as_echo_n "checking for egrep... " >&6; } +if test "${ac_cv_path_EGREP+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if echo a | $GREP -E '(a|b)' >/dev/null 2>&1 + then ac_cv_path_EGREP="$GREP -E" + else + if test -z "$EGREP"; then + ac_path_EGREP_found=false + # Loop through the user's path and test for each of PROGNAME-LIST + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_prog in egrep; do + for ac_exec_ext in '' $ac_executable_extensions; do + ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext" + { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue +# Check for GNU ac_path_EGREP and select it if it is found. + # Check for GNU $ac_path_EGREP +case `"$ac_path_EGREP" --version 2>&1` in +*GNU*) + ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;; +*) + ac_count=0 + $as_echo_n 0123456789 >"conftest.in" + while : + do + cat "conftest.in" "conftest.in" >"conftest.tmp" + mv "conftest.tmp" "conftest.in" + cp "conftest.in" "conftest.nl" + $as_echo 'EGREP' >> "conftest.nl" + "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break + diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break + as_fn_arith $ac_count + 1 && ac_count=$as_val + if test $ac_count -gt ${ac_path_EGREP_max-0}; then + # Best one so far, save it but keep looking for a better one + ac_cv_path_EGREP="$ac_path_EGREP" + ac_path_EGREP_max=$ac_count + fi + # 10*(2^10) chars as input seems more than enough + test $ac_count -gt 10 && break + done + rm -f conftest.in conftest.tmp conftest.nl conftest.out;; +esac + + $ac_path_EGREP_found && break 3 + done + done + done +IFS=$as_save_IFS + if test -z "$ac_cv_path_EGREP"; then + as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5 + fi +else + ac_cv_path_EGREP=$EGREP +fi + + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5 +$as_echo "$ac_cv_path_EGREP" >&6; } + EGREP="$ac_cv_path_EGREP" + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5 +$as_echo_n "checking for ANSI C header files... " >&6; } +if test "${ac_cv_header_stdc+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +#include +#include +#include + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_header_stdc=yes +else + ac_cv_header_stdc=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + +if test $ac_cv_header_stdc = yes; then + # SunOS 4.x string.h does not declare mem*, contrary to ANSI. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include + +_ACEOF +if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | + $EGREP "memchr" >/dev/null 2>&1; then : + +else + ac_cv_header_stdc=no +fi +rm -f conftest* + +fi + +if test $ac_cv_header_stdc = yes; then + # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include + +_ACEOF +if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | + $EGREP "free" >/dev/null 2>&1; then : + +else + ac_cv_header_stdc=no +fi +rm -f conftest* + +fi + +if test $ac_cv_header_stdc = yes; then + # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi. + if test "$cross_compiling" = yes; then : + : +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +#include +#if ((' ' & 0x0FF) == 0x020) +# define ISLOWER(c) ('a' <= (c) && (c) <= 'z') +# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c)) +#else +# define ISLOWER(c) \ + (('a' <= (c) && (c) <= 'i') \ + || ('j' <= (c) && (c) <= 'r') \ + || ('s' <= (c) && (c) <= 'z')) +# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c)) +#endif + +#define XOR(e, f) (((e) && !(f)) || (!(e) && (f))) +int +main () +{ + int i; + for (i = 0; i < 256; i++) + if (XOR (islower (i), ISLOWER (i)) + || toupper (i) != TOUPPER (i)) + return 2; + return 0; +} +_ACEOF +if ac_fn_c_try_run "$LINENO"; then : + +else + ac_cv_header_stdc=no +fi +rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \ + conftest.$ac_objext conftest.beam conftest.$ac_ext +fi + +fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5 +$as_echo "$ac_cv_header_stdc" >&6; } +if test $ac_cv_header_stdc = yes; then + +$as_echo "#define STDC_HEADERS 1" >>confdefs.h + +fi + +# On IRIX 5.3, sys/types and inttypes.h are conflicting. +for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \ + inttypes.h stdint.h unistd.h +do : + as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` +ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default +" +if eval test \"x\$"$as_ac_Header"\" = x"yes"; then : + cat >>confdefs.h <<_ACEOF +#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 +_ACEOF + +fi + +done + + +for ac_header in sys/bitypes.h +do : + ac_fn_c_check_header_mongrel "$LINENO" "sys/bitypes.h" "ac_cv_header_sys_bitypes_h" "$ac_includes_default" +if test "x$ac_cv_header_sys_bitypes_h" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_SYS_BITYPES_H 1 +_ACEOF + +fi + +done + + +ac_fn_c_check_type "$LINENO" "int8_t" "ac_cv_type_int8_t" "$ac_includes_default +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +" +if test "x$ac_cv_type_int8_t" = x""yes; then : + +else + +$as_echo "#define int8_t signed char" >>confdefs.h + +fi + +ac_fn_c_check_type "$LINENO" "u_int8_t" "ac_cv_type_u_int8_t" "$ac_includes_default +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +" +if test "x$ac_cv_type_u_int8_t" = x""yes; then : + +else + +$as_echo "#define u_int8_t unsigned char" >>confdefs.h + +fi + +ac_fn_c_check_type "$LINENO" "int16_t" "ac_cv_type_int16_t" "$ac_includes_default" +if test "x$ac_cv_type_int16_t" = x""yes; then : + +else + +$as_echo "#define int16_t short" >>confdefs.h + + $ac_includes_default +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +fi + +ac_fn_c_check_type "$LINENO" "u_int16_t" "ac_cv_type_u_int16_t" "$ac_includes_default +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +" +if test "x$ac_cv_type_u_int16_t" = x""yes; then : + +else + +$as_echo "#define u_int16_t unsigned short" >>confdefs.h + +fi + +ac_fn_c_check_type "$LINENO" "int32_t" "ac_cv_type_int32_t" "$ac_includes_default +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +" +if test "x$ac_cv_type_int32_t" = x""yes; then : + +else + +$as_echo "#define int32_t int" >>confdefs.h + +fi + +ac_fn_c_check_type "$LINENO" "u_int32_t" "ac_cv_type_u_int32_t" "$ac_includes_default +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +" +if test "x$ac_cv_type_u_int32_t" = x""yes; then : + +else + +$as_echo "#define u_int32_t unsigned int" >>confdefs.h + +fi + +ac_fn_c_check_type "$LINENO" "int64_t" "ac_cv_type_int64_t" "$ac_includes_default +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +" +if test "x$ac_cv_type_int64_t" = x""yes; then : + +else + +$as_echo "#define int64_t long long" >>confdefs.h + +fi + +ac_fn_c_check_type "$LINENO" "u_int64_t" "ac_cv_type_u_int64_t" "$ac_includes_default +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +" +if test "x$ac_cv_type_u_int64_t" = x""yes; then : + +else + +$as_echo "#define u_int64_t unsigned long long" >>confdefs.h + +fi + + +# +# Try to arrange for large file support. +# +# Check whether --enable-largefile was given. +if test "${enable_largefile+set}" = set; then : + enableval=$enable_largefile; +fi + +if test "$enable_largefile" != no; then + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for special C compiler options needed for large files" >&5 +$as_echo_n "checking for special C compiler options needed for large files... " >&6; } +if test "${ac_cv_sys_largefile_CC+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_cv_sys_largefile_CC=no + if test "$GCC" != yes; then + ac_save_CC=$CC + while :; do + # IRIX 6.2 and later do not support large files by default, + # so use the C compiler's -n32 option if that helps. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include + /* Check that off_t can represent 2**63 - 1 correctly. + We can't simply define LARGE_OFF_T to be 9223372036854775807, + since some C++ compilers masquerading as C compilers + incorrectly reject 9223372036854775807. */ +#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62)) + int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721 + && LARGE_OFF_T % 2147483647 == 1) + ? 1 : -1]; +int +main () +{ + + ; + return 0; +} +_ACEOF + if ac_fn_c_try_compile "$LINENO"; then : + break +fi +rm -f core conftest.err conftest.$ac_objext + CC="$CC -n32" + if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_sys_largefile_CC=' -n32'; break +fi +rm -f core conftest.err conftest.$ac_objext + break + done + CC=$ac_save_CC + rm -f conftest.$ac_ext + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_largefile_CC" >&5 +$as_echo "$ac_cv_sys_largefile_CC" >&6; } + if test "$ac_cv_sys_largefile_CC" != no; then + CC=$CC$ac_cv_sys_largefile_CC + fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _FILE_OFFSET_BITS value needed for large files" >&5 +$as_echo_n "checking for _FILE_OFFSET_BITS value needed for large files... " >&6; } +if test "${ac_cv_sys_file_offset_bits+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + while :; do + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include + /* Check that off_t can represent 2**63 - 1 correctly. + We can't simply define LARGE_OFF_T to be 9223372036854775807, + since some C++ compilers masquerading as C compilers + incorrectly reject 9223372036854775807. */ +#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62)) + int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721 + && LARGE_OFF_T % 2147483647 == 1) + ? 1 : -1]; +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_sys_file_offset_bits=no; break +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#define _FILE_OFFSET_BITS 64 +#include + /* Check that off_t can represent 2**63 - 1 correctly. + We can't simply define LARGE_OFF_T to be 9223372036854775807, + since some C++ compilers masquerading as C compilers + incorrectly reject 9223372036854775807. */ +#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62)) + int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721 + && LARGE_OFF_T % 2147483647 == 1) + ? 1 : -1]; +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_sys_file_offset_bits=64; break +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + ac_cv_sys_file_offset_bits=unknown + break +done +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_file_offset_bits" >&5 +$as_echo "$ac_cv_sys_file_offset_bits" >&6; } +case $ac_cv_sys_file_offset_bits in #( + no | unknown) ;; + *) +cat >>confdefs.h <<_ACEOF +#define _FILE_OFFSET_BITS $ac_cv_sys_file_offset_bits +_ACEOF +;; +esac +rm -rf conftest* + if test $ac_cv_sys_file_offset_bits = unknown; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _LARGE_FILES value needed for large files" >&5 +$as_echo_n "checking for _LARGE_FILES value needed for large files... " >&6; } +if test "${ac_cv_sys_large_files+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + while :; do + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include + /* Check that off_t can represent 2**63 - 1 correctly. + We can't simply define LARGE_OFF_T to be 9223372036854775807, + since some C++ compilers masquerading as C compilers + incorrectly reject 9223372036854775807. */ +#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62)) + int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721 + && LARGE_OFF_T % 2147483647 == 1) + ? 1 : -1]; +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_sys_large_files=no; break +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#define _LARGE_FILES 1 +#include + /* Check that off_t can represent 2**63 - 1 correctly. + We can't simply define LARGE_OFF_T to be 9223372036854775807, + since some C++ compilers masquerading as C compilers + incorrectly reject 9223372036854775807. */ +#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62)) + int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721 + && LARGE_OFF_T % 2147483647 == 1) + ? 1 : -1]; +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_sys_large_files=1; break +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + ac_cv_sys_large_files=unknown + break +done +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_large_files" >&5 +$as_echo "$ac_cv_sys_large_files" >&6; } +case $ac_cv_sys_large_files in #( + no | unknown) ;; + *) +cat >>confdefs.h <<_ACEOF +#define _LARGE_FILES $ac_cv_sys_large_files +_ACEOF +;; +esac +rm -rf conftest* + fi +fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for _LARGEFILE_SOURCE value needed for large files" >&5 +$as_echo_n "checking for _LARGEFILE_SOURCE value needed for large files... " >&6; } +if test "${ac_cv_sys_largefile_source+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + while :; do + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include /* for off_t */ + #include +int +main () +{ +int (*fp) (FILE *, off_t, int) = fseeko; + return fseeko (stdin, 0, 0) && fp (stdin, 0, 0); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_sys_largefile_source=no; break +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#define _LARGEFILE_SOURCE 1 +#include /* for off_t */ + #include +int +main () +{ +int (*fp) (FILE *, off_t, int) = fseeko; + return fseeko (stdin, 0, 0) && fp (stdin, 0, 0); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_sys_largefile_source=1; break +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + ac_cv_sys_largefile_source=unknown + break +done +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_largefile_source" >&5 +$as_echo "$ac_cv_sys_largefile_source" >&6; } +case $ac_cv_sys_largefile_source in #( + no | unknown) ;; + *) +cat >>confdefs.h <<_ACEOF +#define _LARGEFILE_SOURCE $ac_cv_sys_largefile_source +_ACEOF +;; +esac +rm -rf conftest* + +# We used to try defining _XOPEN_SOURCE=500 too, to work around a bug +# in glibc 2.1.3, but that breaks too many other things. +# If you want fseeko and ftello with glibc, upgrade to a fixed glibc. +if test $ac_cv_sys_largefile_source != unknown; then + +$as_echo "#define HAVE_FSEEKO 1" >>confdefs.h + +fi + + +for ac_header in sys/ioccom.h sys/sockio.h limits.h paths.h +do : + as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` +ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" +if eval test \"x\$"$as_ac_Header"\" = x"yes"; then : + cat >>confdefs.h <<_ACEOF +#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 +_ACEOF + +fi + +done + +for ac_header in linux/types.h +do : + ac_fn_c_check_header_mongrel "$LINENO" "linux/types.h" "ac_cv_header_linux_types_h" "$ac_includes_default" +if test "x$ac_cv_header_linux_types_h" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_LINUX_TYPES_H 1 +_ACEOF + +fi + +done + +for ac_header in linux/if_packet.h netpacket/packet.h netpacket/if_packet.h +do : + as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` +ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" +if eval test \"x\$"$as_ac_Header"\" = x"yes"; then : + cat >>confdefs.h <<_ACEOF +#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 +_ACEOF + +fi + +done + +for ac_header in net/pfvar.h +do : + ac_fn_c_check_header_compile "$LINENO" "net/pfvar.h" "ac_cv_header_net_pfvar_h" "#include +#include +#include +" +if test "x$ac_cv_header_net_pfvar_h" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_NET_PFVAR_H 1 +_ACEOF + +fi + +done + +if test "$ac_cv_header_net_pfvar_h" = yes; then + # + # Check for various PF actions. + # + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether net/pfvar.h defines PF_NAT through PF_NORDR" >&5 +$as_echo_n "checking whether net/pfvar.h defines PF_NAT through PF_NORDR... " >&6; } + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include + #include + #include + #include +int +main () +{ +return PF_NAT+PF_NONAT+PF_BINAT+PF_NOBINAT+PF_RDR+PF_NORDR; + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + +$as_echo "#define HAVE_PF_NAT_THROUGH_PF_NORDR 1" >>confdefs.h + + +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +for ac_header in netinet/if_ether.h +do : + ac_fn_c_check_header_compile "$LINENO" "netinet/if_ether.h" "ac_cv_header_netinet_if_ether_h" "#include +#include +" +if test "x$ac_cv_header_netinet_if_ether_h" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_NETINET_IF_ETHER_H 1 +_ACEOF + +fi + +done + +if test "$ac_cv_header_netinet_if_ether_h" != yes; then + # + # The simple test didn't work. + # Do we need to include first? + # Unset ac_cv_header_netinet_if_ether_h so we don't + # treat the previous failure as a cached value and + # suppress the next test. + # + { $as_echo "$as_me:${as_lineno-$LINENO}: Rechecking with some additional includes" >&5 +$as_echo "$as_me: Rechecking with some additional includes" >&6;} + unset ac_cv_header_netinet_if_ether_h + for ac_header in netinet/if_ether.h +do : + ac_fn_c_check_header_compile "$LINENO" "netinet/if_ether.h" "ac_cv_header_netinet_if_ether_h" "#include +#include +#include +struct mbuf; +struct rtentry; +#include +" +if test "x$ac_cv_header_netinet_if_ether_h" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_NETINET_IF_ETHER_H 1 +_ACEOF + +fi + +done + +fi + +if test "$GCC" = yes ; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI ioctl definitions" >&5 +$as_echo_n "checking for ANSI ioctl definitions... " >&6; } + if test "${ac_cv_lbl_gcc_fixincludes+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +/* + * This generates a "duplicate case value" when fixincludes + * has not be run. + */ +# include +# include +# include +# ifdef HAVE_SYS_IOCCOM_H +# include +# endif +int +main () +{ +switch (0) { + case _IO('A', 1):; + case _IO('B', 1):; + } + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_lbl_gcc_fixincludes=yes +else + ac_cv_lbl_gcc_fixincludes=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_gcc_fixincludes" >&5 +$as_echo "$ac_cv_lbl_gcc_fixincludes" >&6; } + if test $ac_cv_lbl_gcc_fixincludes = no ; then + # Don't cache failure + unset ac_cv_lbl_gcc_fixincludes + as_fn_error $? "see the INSTALL for more info" "$LINENO" 5 + fi + fi + +for ac_func in strerror strlcpy +do : + as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh` +ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var" +if eval test \"x\$"$as_ac_var"\" = x"yes"; then : + cat >>confdefs.h <<_ACEOF +#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1 +_ACEOF + +fi +done + + +needsnprintf=no +for ac_func in vsnprintf snprintf +do : + as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh` +ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var" +if eval test \"x\$"$as_ac_var"\" = x"yes"; then : + cat >>confdefs.h <<_ACEOF +#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1 +_ACEOF + +else + needsnprintf=yes +fi +done + +if test $needsnprintf = yes; then + case " $LIBOBJS " in + *" snprintf.$ac_objext "* ) ;; + *) LIBOBJS="$LIBOBJS snprintf.$ac_objext" + ;; +esac + +fi + +# +# Do this before checking for ether_hostton(), as it's a +# "gethostbyname() -ish function". +# + + # Most operating systems have gethostbyname() in the default searched + # libraries (i.e. libc): + # Some OSes (eg. Solaris) place it in libnsl + # Some strange OSes (SINIX) have it in libsocket: + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing gethostbyname" >&5 +$as_echo_n "checking for library containing gethostbyname... " >&6; } +if test "${ac_cv_search_gethostbyname+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_func_search_save_LIBS=$LIBS +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char gethostbyname (); +int +main () +{ +return gethostbyname (); + ; + return 0; +} +_ACEOF +for ac_lib in '' nsl socket resolv; do + if test -z "$ac_lib"; then + ac_res="none required" + else + ac_res=-l$ac_lib + LIBS="-l$ac_lib $ac_func_search_save_LIBS" + fi + if ac_fn_c_try_link "$LINENO"; then : + ac_cv_search_gethostbyname=$ac_res +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext + if test "${ac_cv_search_gethostbyname+set}" = set; then : + break +fi +done +if test "${ac_cv_search_gethostbyname+set}" = set; then : + +else + ac_cv_search_gethostbyname=no +fi +rm conftest.$ac_ext +LIBS=$ac_func_search_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_gethostbyname" >&5 +$as_echo "$ac_cv_search_gethostbyname" >&6; } +ac_res=$ac_cv_search_gethostbyname +if test "$ac_res" != no; then : + test "$ac_res" = "none required" || LIBS="$ac_res $LIBS" + +fi + + # Unfortunately libsocket sometimes depends on libnsl and + # AC_SEARCH_LIBS isn't up to the task of handling dependencies like this. + if test "$ac_cv_search_gethostbyname" = "no" + then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for gethostbyname in -lsocket" >&5 +$as_echo_n "checking for gethostbyname in -lsocket... " >&6; } +if test "${ac_cv_lib_socket_gethostbyname+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-lsocket -lnsl $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char gethostbyname (); +int +main () +{ +return gethostbyname (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_socket_gethostbyname=yes +else + ac_cv_lib_socket_gethostbyname=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_socket_gethostbyname" >&5 +$as_echo "$ac_cv_lib_socket_gethostbyname" >&6; } +if test "x$ac_cv_lib_socket_gethostbyname" = x""yes; then : + LIBS="-lsocket -lnsl $LIBS" +fi + + fi + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing socket" >&5 +$as_echo_n "checking for library containing socket... " >&6; } +if test "${ac_cv_search_socket+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_func_search_save_LIBS=$LIBS +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char socket (); +int +main () +{ +return socket (); + ; + return 0; +} +_ACEOF +for ac_lib in '' socket; do + if test -z "$ac_lib"; then + ac_res="none required" + else + ac_res=-l$ac_lib + LIBS="-l$ac_lib $ac_func_search_save_LIBS" + fi + if ac_fn_c_try_link "$LINENO"; then : + ac_cv_search_socket=$ac_res +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext + if test "${ac_cv_search_socket+set}" = set; then : + break +fi +done +if test "${ac_cv_search_socket+set}" = set; then : + +else + ac_cv_search_socket=no +fi +rm conftest.$ac_ext +LIBS=$ac_func_search_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_socket" >&5 +$as_echo "$ac_cv_search_socket" >&6; } +ac_res=$ac_cv_search_socket +if test "$ac_res" != no; then : + test "$ac_res" = "none required" || LIBS="$ac_res $LIBS" + +else + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for socket in -lsocket" >&5 +$as_echo_n "checking for socket in -lsocket... " >&6; } +if test "${ac_cv_lib_socket_socket+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-lsocket -lnsl $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char socket (); +int +main () +{ +return socket (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_socket_socket=yes +else + ac_cv_lib_socket_socket=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_socket_socket" >&5 +$as_echo "$ac_cv_lib_socket_socket" >&6; } +if test "x$ac_cv_lib_socket_socket" = x""yes; then : + LIBS="-lsocket -lnsl $LIBS" +fi + +fi + + # DLPI needs putmsg under HPUX so test for -lstr while we're at it + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing putmsg" >&5 +$as_echo_n "checking for library containing putmsg... " >&6; } +if test "${ac_cv_search_putmsg+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_func_search_save_LIBS=$LIBS +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char putmsg (); +int +main () +{ +return putmsg (); + ; + return 0; +} +_ACEOF +for ac_lib in '' str; do + if test -z "$ac_lib"; then + ac_res="none required" + else + ac_res=-l$ac_lib + LIBS="-l$ac_lib $ac_func_search_save_LIBS" + fi + if ac_fn_c_try_link "$LINENO"; then : + ac_cv_search_putmsg=$ac_res +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext + if test "${ac_cv_search_putmsg+set}" = set; then : + break +fi +done +if test "${ac_cv_search_putmsg+set}" = set; then : + +else + ac_cv_search_putmsg=no +fi +rm conftest.$ac_ext +LIBS=$ac_func_search_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_putmsg" >&5 +$as_echo "$ac_cv_search_putmsg" >&6; } +ac_res=$ac_cv_search_putmsg +if test "$ac_res" != no; then : + test "$ac_res" = "none required" || LIBS="$ac_res $LIBS" + +fi + + + +# +# You are in a twisty little maze of UN*Xes, all different. +# Some might not have ether_hostton(). +# Some might have it, but not declare it in any header file. +# Some might have it, but declare it in . +# Some might have it, but declare it in +# (And some might have it but document it as something declared in +# , although appears to work.) +# +# Before you is a C compiler. +# +for ac_func in ether_hostton +do : + ac_fn_c_check_func "$LINENO" "ether_hostton" "ac_cv_func_ether_hostton" +if test "x$ac_cv_func_ether_hostton" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_ETHER_HOSTTON 1 +_ACEOF + +fi +done + +if test "$ac_cv_func_ether_hostton" = yes; then + # + # OK, we have ether_hostton(). Do we have ? + # + if test "$ac_cv_header_netinet_if_ether_h" = yes; then + # + # Yes. Does it declare ether_hostton()? + # + ac_fn_c_check_decl "$LINENO" "ether_hostton" "ac_cv_have_decl_ether_hostton" " +#include +#include +#include +#include +struct mbuf; +struct rtentry; +#include +#include + +" +if test "x$ac_cv_have_decl_ether_hostton" = x""yes; then : + + +$as_echo "#define NETINET_IF_ETHER_H_DECLARES_ETHER_HOSTTON /**/" >>confdefs.h + + +fi + + fi + # + # Did that succeed? + # + if test "$ac_cv_have_decl_ether_hostton" != yes; then + # + # No, how about , as on Linux? + # + for ac_header in netinet/ether.h +do : + ac_fn_c_check_header_mongrel "$LINENO" "netinet/ether.h" "ac_cv_header_netinet_ether_h" "$ac_includes_default" +if test "x$ac_cv_header_netinet_ether_h" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_NETINET_ETHER_H 1 +_ACEOF + +fi + +done + + if test "$ac_cv_header_netinet_ether_h" = yes; then + # + # We have it - does it declare ether_hostton()? + # Unset ac_cv_have_decl_ether_hostton so we don't + # treat the previous failure as a cached value and + # suppress the next test. + # + unset ac_cv_have_decl_ether_hostton + ac_fn_c_check_decl "$LINENO" "ether_hostton" "ac_cv_have_decl_ether_hostton" " +#include + +" +if test "x$ac_cv_have_decl_ether_hostton" = x""yes; then : + + +$as_echo "#define NETINET_ETHER_H_DECLARES_ETHER_HOSTTON /**/" >>confdefs.h + + +fi + + fi + fi + # + # Is ether_hostton() declared? + # + if test "$ac_cv_have_decl_ether_hostton" != yes; then + # + # No, we'll have to declare it ourselves. + # Do we have "struct ether_addr"? + # + ac_fn_c_check_type "$LINENO" "struct ether_addr" "ac_cv_type_struct_ether_addr" " +#include +#include +#include +#include +struct mbuf; +struct rtentry; +#include +#include + +" +if test "x$ac_cv_type_struct_ether_addr" = x""yes; then : + +cat >>confdefs.h <<_ACEOF +#define HAVE_STRUCT_ETHER_ADDR 1 +_ACEOF + + +fi + + +$as_echo "#define HAVE_DECL_ETHER_HOSTTON 0" >>confdefs.h + + else + +$as_echo "#define HAVE_DECL_ETHER_HOSTTON 1" >>confdefs.h + + fi +fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if --disable-protochain option is specified" >&5 +$as_echo_n "checking if --disable-protochain option is specified... " >&6; } +# Check whether --enable-protochain was given. +if test "${enable_protochain+set}" = set; then : + enableval=$enable_protochain; +fi + +case "x$enable_protochain" in +xyes) enable_protochain=enabled ;; +xno) enable_protochain=disabled ;; +x) enable_protochain=enabled ;; +esac + +if test "$enable_protochain" = "disabled"; then + +$as_echo "#define NO_PROTOCHAIN 1" >>confdefs.h + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${enable_protochain}" >&5 +$as_echo "${enable_protochain}" >&6; } + +# +# SITA support is mutually exclusive with native capture support; +# "--with-sita" selects SITA support. +# + +# Check whether --with-sita was given. +if test "${with_sita+set}" = set; then : + withval=$with_sita; + if test ! "x$withval" = "xno" ; then + +$as_echo "#define SITA 1" >>confdefs.h + + { $as_echo "$as_me:${as_lineno-$LINENO}: Enabling SITA ACN support" >&5 +$as_echo "$as_me: Enabling SITA ACN support" >&6;} + V_PCAP=sita + V_FINDALLDEVS=sita + fi + +else + +if test -z "$with_pcap" && test "$cross_compiling" = yes; then + as_fn_error $? "pcap type not determined when cross-compiling; use --with-pcap=..." "$LINENO" 5 +fi + +# Check whether --with-pcap was given. +if test "${with_pcap+set}" = set; then : + withval=$with_pcap; +fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking packet capture type" >&5 +$as_echo_n "checking packet capture type... " >&6; } +if test ! -z "$with_pcap" ; then + V_PCAP="$withval" +elif test -r /dev/bpf -o -h /dev/bpf ; then + # + # Cloning BPF device. + # + V_PCAP=bpf + +$as_echo "#define HAVE_CLONING_BPF 1" >>confdefs.h + +elif test -r /dev/bpf0 ; then + V_PCAP=bpf +elif test -r /usr/include/net/pfilt.h ; then + V_PCAP=pf +elif test -r /dev/enet ; then + V_PCAP=enet +elif test -r /dev/nit ; then + V_PCAP=snit +elif test -r /usr/include/sys/net/nit.h ; then + V_PCAP=nit +elif test -r /usr/include/linux/socket.h ; then + V_PCAP=linux +elif test -r /usr/include/net/raw.h ; then + V_PCAP=snoop +elif test -r /usr/include/odmi.h ; then + # + # On AIX, the BPF devices might not yet be present - they're + # created the first time libpcap runs after booting. + # We check for odmi.h instead. + # + V_PCAP=bpf +elif test -c /dev/bpf0 ; then # check again in case not readable + V_PCAP=bpf +elif test -r /usr/include/sys/dlpi.h ; then + V_PCAP=dlpi +elif test -c /dev/enet ; then # check again in case not readable + V_PCAP=enet +elif test -c /dev/nit ; then # check again in case not readable + V_PCAP=snit +else + V_PCAP=null +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $V_PCAP" >&5 +$as_echo "$V_PCAP" >&6; } + +# +# Do capture-mechanism-dependent tests. +# +case "$V_PCAP" in +dlpi) + # + # Checks to see if Solaris has the public libdlpi(3LIB) library. + # Note: The existence of /usr/include/libdlpi.h does not mean it is the + # public libdlpi(3LIB) version. Before libdlpi was made public, a + # private version also existed, which did not have the same APIs. + # Due to a gcc bug, the default search path for 32-bit libraries does + # not include /lib, we add it explicitly here. + # [http://bugs.opensolaris.org/view_bug.do?bug_id=6619485]. + # Also, due to the bug above applications that link to libpcap with + # libdlpi will have to add "-L/lib" option to "configure". + # + saved_ldflags=$LDFLAGS + LDFLAGS="$LIBS -L/lib" + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlpi_walk in -ldlpi" >&5 +$as_echo_n "checking for dlpi_walk in -ldlpi... " >&6; } +if test "${ac_cv_lib_dlpi_dlpi_walk+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-ldlpi $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char dlpi_walk (); +int +main () +{ +return dlpi_walk (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_dlpi_dlpi_walk=yes +else + ac_cv_lib_dlpi_dlpi_walk=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dlpi_dlpi_walk" >&5 +$as_echo "$ac_cv_lib_dlpi_dlpi_walk" >&6; } +if test "x$ac_cv_lib_dlpi_dlpi_walk" = x""yes; then : + LIBS="-ldlpi $LIBS" + V_PCAP=libdlpi + +$as_echo "#define HAVE_LIBDLPI 1" >>confdefs.h + +else + V_PCAP=dlpi +fi + + LDFLAGS=$saved_ldflags + + # + # Checks whether is usable, to catch weird SCO + # versions of DLPI. + # + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether is usable" >&5 +$as_echo_n "checking whether is usable... " >&6; } + if test "${ac_cv_sys_dlpi_usable+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + + #include + #include + #include + +int +main () +{ +int i = DL_PROMISC_PHYS; + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_sys_dlpi_usable=yes +else + ac_cv_sys_dlpi_usable=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_dlpi_usable" >&5 +$as_echo "$ac_cv_sys_dlpi_usable" >&6; } + if test $ac_cv_sys_dlpi_usable = no ; then + as_fn_error $? " is not usable on this system; it probably has a non-standard DLPI" "$LINENO" 5 + fi + + # + # Check whether we have a /dev/dlpi device or have multiple devices. + # + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for /dev/dlpi device" >&5 +$as_echo_n "checking for /dev/dlpi device... " >&6; } + if test -c /dev/dlpi ; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + +$as_echo "#define HAVE_DEV_DLPI 1" >>confdefs.h + + else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + dir="/dev/dlpi" + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $dir directory" >&5 +$as_echo_n "checking for $dir directory... " >&6; } + if test -d $dir ; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + +cat >>confdefs.h <<_ACEOF +#define PCAP_DEV_PREFIX "$dir" +_ACEOF + + else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + fi + fi + + # + # This check is for Solaris with DLPI support for passive modes. + # See dlpi(7P) for more details. + # + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if dl_passive_req_t struct exists" >&5 +$as_echo_n "checking if dl_passive_req_t struct exists... " >&6; } + if test "${ac_cv_lbl_has_dl_passive_req_t+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +# include +# include +int +main () +{ +u_int i = sizeof(dl_passive_req_t) + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_lbl_has_dl_passive_req_t=yes +else + ac_cv_lbl_has_dl_passive_req_t=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_has_dl_passive_req_t" >&5 +$as_echo "$ac_cv_lbl_has_dl_passive_req_t" >&6; } + if test $ac_cv_lbl_has_dl_passive_req_t = yes ; then + +$as_echo "#define HAVE_DLPI_PASSIVE 1" >>confdefs.h + + fi + ;; + +linux) + # + # Do we have the wireless extensions? + # + for ac_header in linux/wireless.h +do : + ac_fn_c_check_header_compile "$LINENO" "linux/wireless.h" "ac_cv_header_linux_wireless_h" " +#include +#include +#include + +" +if test "x$ac_cv_header_linux_wireless_h" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_LINUX_WIRELESS_H 1 +_ACEOF + +fi + +done + + + # + # Do we have libnl? + # + +# Check whether --with-libnl was given. +if test "${with_libnl+set}" = set; then : + withval=$with_libnl; with_libnl=$withval +fi + + + if test x$with_libnl != xno ; then + # + # Try libnl 2.x first. + # + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for nl_socket_alloc in -lnl" >&5 +$as_echo_n "checking for nl_socket_alloc in -lnl... " >&6; } +if test "${ac_cv_lib_nl_nl_socket_alloc+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-lnl $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char nl_socket_alloc (); +int +main () +{ +return nl_socket_alloc (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_nl_nl_socket_alloc=yes +else + ac_cv_lib_nl_nl_socket_alloc=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_nl_nl_socket_alloc" >&5 +$as_echo "$ac_cv_lib_nl_nl_socket_alloc" >&6; } +if test "x$ac_cv_lib_nl_nl_socket_alloc" = x""yes; then : + + # + # Yes, we have libnl 2.x. + # + LIBS="-lnl-genl -lnl $LIBS" + +$as_echo "#define HAVE_LIBNL 1" >>confdefs.h + + +$as_echo "#define HAVE_LIBNL_2_x 1" >>confdefs.h + + +else + + # + # No, we don't; do we have libnl 1.x? + # + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for nl_handle_alloc in -lnl" >&5 +$as_echo_n "checking for nl_handle_alloc in -lnl... " >&6; } +if test "${ac_cv_lib_nl_nl_handle_alloc+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-lnl $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char nl_handle_alloc (); +int +main () +{ +return nl_handle_alloc (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_nl_nl_handle_alloc=yes +else + ac_cv_lib_nl_nl_handle_alloc=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_nl_nl_handle_alloc" >&5 +$as_echo "$ac_cv_lib_nl_nl_handle_alloc" >&6; } +if test "x$ac_cv_lib_nl_nl_handle_alloc" = x""yes; then : + + # + # Yes. + # + LIBS="-lnl $LIBS" + +$as_echo "#define HAVE_LIBNL 1" >>confdefs.h + + +else + + # + # No, we don't have libnl at all. + # + if test x$with_libnl = xyes ; then + as_fn_error $? "libnl support requested but libnl not found" "$LINENO" 5 + fi + +fi + + +fi + + fi + + for ac_header in linux/ethtool.h +do : + ac_fn_c_check_header_compile "$LINENO" "linux/ethtool.h" "ac_cv_header_linux_ethtool_h" " +$ac_includes_default +#include + +" +if test "x$ac_cv_header_linux_ethtool_h" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_LINUX_ETHTOOL_H 1 +_ACEOF + +fi + +done + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if if_packet.h has tpacket_stats defined" >&5 +$as_echo_n "checking if if_packet.h has tpacket_stats defined... " >&6; } + if test "${ac_cv_lbl_tpacket_stats+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +# include +int +main () +{ +struct tpacket_stats stats + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_lbl_tpacket_stats=yes +else + ac_cv_lbl_tpacket_stats=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_tpacket_stats" >&5 +$as_echo "$ac_cv_lbl_tpacket_stats" >&6; } + if test $ac_cv_lbl_tpacket_stats = yes; then + +$as_echo "#define HAVE_TPACKET_STATS 1" >>confdefs.h + + fi + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if tpacket_auxdata struct has tp_vlan_tci member" >&5 +$as_echo_n "checking if tpacket_auxdata struct has tp_vlan_tci member... " >&6; } + if test "${ac_cv_lbl_linux_tpacket_auxdata_tp_vlan_tci+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +# include +# include +int +main () +{ +u_int i = sizeof(((struct tpacket_auxdata *)0)->tp_vlan_tci) + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_lbl_linux_tpacket_auxdata_tp_vlan_tci=yes +else + ac_cv_lbl_linux_tpacket_auxdata_tp_vlan_tci=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_linux_tpacket_auxdata_tp_vlan_tci" >&5 +$as_echo "$ac_cv_lbl_linux_tpacket_auxdata_tp_vlan_tci" >&6; } + if test $ac_cv_lbl_linux_tpacket_auxdata_tp_vlan_tci = yes ; then + HAVE_LINUX_TPACKET_AUXDATA=tp_vlan_tci + + +$as_echo "#define HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI 1" >>confdefs.h + + fi + ;; + +bpf) + # + # Check whether we have the *BSD-style ioctls. + # + for ac_header in net/if_media.h +do : + ac_fn_c_check_header_mongrel "$LINENO" "net/if_media.h" "ac_cv_header_net_if_media_h" "$ac_includes_default" +if test "x$ac_cv_header_net_if_media_h" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_NET_IF_MEDIA_H 1 +_ACEOF + +fi + +done + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the system supports zerocopy BPF" >&5 +$as_echo_n "checking whether the system supports zerocopy BPF... " >&6; } + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include + #include + #include + #include +int +main () +{ +return (BIOCROTZBUF + BPF_BUFMODE_ZBUF); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + +$as_echo "#define HAVE_ZEROCOPY_BPF 1" >>confdefs.h + + +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + + # + # Check whether we have struct BPF_TIMEVAL. + # + ac_fn_c_check_type "$LINENO" "struct BPF_TIMEVAL" "ac_cv_type_struct_BPF_TIMEVAL" " +#include +#include +#ifdef HAVE_SYS_IOCCOM_H +#include +#endif +#include + +" +if test "x$ac_cv_type_struct_BPF_TIMEVAL" = x""yes; then : + +cat >>confdefs.h <<_ACEOF +#define HAVE_STRUCT_BPF_TIMEVAL 1 +_ACEOF + + +fi + + ;; + +dag) + V_DEFS="$V_DEFS -DDAG_ONLY" + ;; + +septel) + V_DEFS="$V_DEFS -DSEPTEL_ONLY" + ;; + +snf) + V_DEFS="$V_DEFS -DSNF_ONLY" + ;; + +null) + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cannot determine packet capture interface" >&5 +$as_echo "$as_me: WARNING: cannot determine packet capture interface" >&2;} + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: (see the INSTALL doc for more info)" >&5 +$as_echo "$as_me: WARNING: (see the INSTALL doc for more info)" >&2;} + ;; +esac + +if test "$V_PCAP" = null +then + # + # We can't capture, so we can't open any capture + # devices, so we won't return any interfaces. + # + V_FINDALLDEVS=null +else + ac_fn_c_check_func "$LINENO" "getifaddrs" "ac_cv_func_getifaddrs" +if test "x$ac_cv_func_getifaddrs" = x""yes; then : + + # + # We have "getifaddrs()"; make sure we have + # as well, just in case some platform is really weird. + # + ac_fn_c_check_header_mongrel "$LINENO" "ifaddrs.h" "ac_cv_header_ifaddrs_h" "$ac_includes_default" +if test "x$ac_cv_header_ifaddrs_h" = x""yes; then : + + # + # We have the header, so we use "getifaddrs()" to + # get the list of interfaces. + # + V_FINDALLDEVS=getad + +else + + # + # We don't have the header - give up. + # XXX - we could also fall back on some other + # mechanism, but, for now, this'll catch this + # problem so that we can at least try to figure + # out something to do on systems with "getifaddrs()" + # but without "ifaddrs.h", if there is something + # we can do on those systems. + # + as_fn_error $? "Your system has getifaddrs() but doesn't have a usable ." "$LINENO" 5 + +fi + + + +else + + # + # Well, we don't have "getifaddrs()", so we have to use + # some other mechanism; determine what that mechanism is. + # + # The first thing we use is the type of capture mechanism, + # which is somewhat of a proxy for the OS we're using. + # + case "$V_PCAP" in + + dlpi|libdlpi) + for ac_header in sys/bufmod.h sys/dlpi_ext.h +do : + as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` +ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" +if eval test \"x\$"$as_ac_Header"\" = x"yes"; then : + cat >>confdefs.h <<_ACEOF +#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 +_ACEOF + +fi + +done + + # + # This might be Solaris 8 or later, with + # SIOCGLIFCONF, or it might be some other OS + # or some older version of Solaris, with + # just SIOCGIFCONF. + # + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we have SIOCGLIFCONF" >&5 +$as_echo_n "checking whether we have SIOCGLIFCONF... " >&6; } + if test "${ac_cv_lbl_have_siocglifconf+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include + #include + #include + #include + #include +int +main () +{ +ioctl(0, SIOCGLIFCONF, (char *)0); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_lbl_have_siocglifconf=yes +else + ac_cv_lbl_have_siocglifconf=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_have_siocglifconf" >&5 +$as_echo "$ac_cv_lbl_have_siocglifconf" >&6; } + if test $ac_cv_lbl_have_siocglifconf = yes ; then + V_FINDALLDEVS=glifc + else + V_FINDALLDEVS=gifc + fi + # + # Needed for common functions used by pcap-[dlpi,libdlpi].c + # + SSRC="dlpisubs.c" + ;; + + *) + # + # Assume we just have SIOCGIFCONF. + # (XXX - on at least later Linux kernels, there's + # another mechanism, and we should be using that + # instead.) + # + V_FINDALLDEVS=gifc + ;; + esac +fi + +fi + +fi + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for socklen_t" >&5 +$as_echo_n "checking for socklen_t... " >&6; } +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + + #include + #include + +int +main () +{ + socklen_t x; + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + have_socklen_t=yes +else + have_socklen_t=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +if test "x$have_socklen_t" = "xyes"; then + +$as_echo "#define HAVE_SOCKLEN_T 1" >>confdefs.h + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_socklen_t" >&5 +$as_echo "$have_socklen_t" >&6; } + +# Check whether --enable-ipv6 was given. +if test "${enable_ipv6+set}" = set; then : + enableval=$enable_ipv6; +else + enable_ipv6=ifavailable +fi + +if test "$enable_ipv6" != "no"; then + ac_fn_c_check_func "$LINENO" "getaddrinfo" "ac_cv_func_getaddrinfo" +if test "x$ac_cv_func_getaddrinfo" = x""yes; then : + + +$as_echo "#define INET6 1" >>confdefs.h + + +else + + if test "$enable_ipv6" != "ifavailable"; then + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "--enable-ipv6 was given, but getaddrinfo isn't available +See \`config.log' for more details" "$LINENO" 5 ; } + fi + +fi + +fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build optimizer debugging code" >&5 +$as_echo_n "checking whether to build optimizer debugging code... " >&6; } +# Check whether --enable-optimizer-dbg was given. +if test "${enable_optimizer_dbg+set}" = set; then : + enableval=$enable_optimizer_dbg; +fi + +if test "$enable_optimizer_dbg" = "yes"; then + +$as_echo "#define BDEBUG 1" >>confdefs.h + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${enable_optimizer_dbg-no}" >&5 +$as_echo "${enable_optimizer_dbg-no}" >&6; } + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build parser debugging code" >&5 +$as_echo_n "checking whether to build parser debugging code... " >&6; } +# Check whether --enable-yydebug was given. +if test "${enable_yydebug+set}" = set; then : + enableval=$enable_yydebug; +fi + +if test "$enable_yydebug" = "yes"; then + +$as_echo "#define YYDEBUG 1" >>confdefs.h + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${enable_yydebug-no}" >&5 +$as_echo "${enable_yydebug-no}" >&6; } + +# Check for Endace DAG card support. + +# Check whether --with-dag was given. +if test "${with_dag+set}" = set; then : + withval=$with_dag; + if test "$withval" = no + then + # User doesn't want DAG support. + want_dag=no + elif test "$withval" = yes + then + # User wants DAG support but hasn't specified a directory. + want_dag=yes + else + # User wants DAG support and has specified a directory, so use the provided value. + want_dag=yes + dag_root=$withval + fi + +else + + # + # Use DAG API if present, otherwise don't + # + want_dag=ifpresent + +fi + + + +# Check whether --with-dag-includes was given. +if test "${with_dag_includes+set}" = set; then : + withval=$with_dag_includes; + # User wants DAG support and has specified a header directory, so use the provided value. + want_dag=yes + dag_include_dir=$withval + +fi + + + +# Check whether --with-dag-libraries was given. +if test "${with_dag_libraries+set}" = set; then : + withval=$with_dag_libraries; + # User wants DAG support and has specified a library directory, so use the provided value. + want_dag=yes + dag_lib_dir=$withval + +fi + + +case "$V_PCAP" in +linux|bpf|dag) + # + # We support the DAG API if we're on Linux or BSD, or if we're + # building a DAG-only libpcap. + # + ;; +*) + # + # If the user explicitly requested DAG, tell them it's not + # supported. + # + # If they expressed no preference, don't include it. + # + if test $want_dag = yes; then + as_fn_error $? "DAG support is only available with 'linux' 'bpf' and 'dag' packet capture types" "$LINENO" 5 + elif test $want_dag = yes; then + want_dag=no + fi + ;; +esac + +ac_cv_lbl_dag_api=no +if test "$want_dag" != no; then + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we have DAG API headers" >&5 +$as_echo_n "checking whether we have DAG API headers... " >&6; } + + # If necessary, set default paths for DAG API headers and libraries. + if test -z "$dag_root"; then + dag_root=/usr/local + fi + + if test -z "$dag_include_dir"; then + dag_include_dir="$dag_root/include" + fi + + if test -z "$dag_lib_dir"; then + dag_lib_dir="$dag_root/lib" + fi + + if test -z "$dag_tools_dir"; then + dag_tools_dir="$dag_root/tools" + fi + + if test -r $dag_include_dir/dagapi.h; then + ac_cv_lbl_dag_api=yes + fi + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_dag_api ($dag_include_dir)" >&5 +$as_echo "$ac_cv_lbl_dag_api ($dag_include_dir)" >&6; } +fi + +if test $ac_cv_lbl_dag_api = yes; then + V_INCLS="$V_INCLS -I$dag_include_dir" + + if test $V_PCAP != dag ; then + SSRC="pcap-dag.c" + fi + + # See if we can find a general version string. + # Don't need to save and restore LIBS to prevent -ldag being + # included if there's a found-action (arg 3). + saved_ldflags=$LDFLAGS + LDFLAGS="-L$dag_lib_dir" + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dag_attach_stream in -ldag" >&5 +$as_echo_n "checking for dag_attach_stream in -ldag... " >&6; } +if test "${ac_cv_lib_dag_dag_attach_stream+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-ldag $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char dag_attach_stream (); +int +main () +{ +return dag_attach_stream (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_dag_dag_attach_stream=yes +else + ac_cv_lib_dag_dag_attach_stream=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dag_dag_attach_stream" >&5 +$as_echo "$ac_cv_lib_dag_dag_attach_stream" >&6; } +if test "x$ac_cv_lib_dag_dag_attach_stream" = x""yes; then : + dag_streams="1" +else + dag_streams="0" +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dag_get_erf_types in -ldag" >&5 +$as_echo_n "checking for dag_get_erf_types in -ldag... " >&6; } +if test "${ac_cv_lib_dag_dag_get_erf_types+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-ldag $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char dag_get_erf_types (); +int +main () +{ +return dag_get_erf_types (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_dag_dag_get_erf_types=yes +else + ac_cv_lib_dag_dag_get_erf_types=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dag_dag_get_erf_types" >&5 +$as_echo "$ac_cv_lib_dag_dag_get_erf_types" >&6; } +if test "x$ac_cv_lib_dag_dag_get_erf_types" = x""yes; then : + + +$as_echo "#define HAVE_DAG_GET_ERF_TYPES 1" >>confdefs.h + +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dag_get_stream_erf_types in -ldag" >&5 +$as_echo_n "checking for dag_get_stream_erf_types in -ldag... " >&6; } +if test "${ac_cv_lib_dag_dag_get_stream_erf_types+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-ldag $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char dag_get_stream_erf_types (); +int +main () +{ +return dag_get_stream_erf_types (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_dag_dag_get_stream_erf_types=yes +else + ac_cv_lib_dag_dag_get_stream_erf_types=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dag_dag_get_stream_erf_types" >&5 +$as_echo "$ac_cv_lib_dag_dag_get_stream_erf_types" >&6; } +if test "x$ac_cv_lib_dag_dag_get_stream_erf_types" = x""yes; then : + + +$as_echo "#define HAVE_DAG_GET_STREAM_ERF_TYPES 1" >>confdefs.h + +fi + + + LDFLAGS=$saved_ldflags + + if test "$dag_streams" = 1; then + +$as_echo "#define HAVE_DAG_STREAMS_API 1" >>confdefs.h + + LIBS="$LIBS -ldag" + LDFLAGS="$LDFLAGS -L$dag_lib_dir" + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for vdag_set_device_info in -lvdag" >&5 +$as_echo_n "checking for vdag_set_device_info in -lvdag... " >&6; } +if test "${ac_cv_lib_vdag_vdag_set_device_info+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-lvdag $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char vdag_set_device_info (); +int +main () +{ +return vdag_set_device_info (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_vdag_vdag_set_device_info=yes +else + ac_cv_lib_vdag_vdag_set_device_info=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_vdag_vdag_set_device_info" >&5 +$as_echo "$ac_cv_lib_vdag_vdag_set_device_info" >&6; } +if test "x$ac_cv_lib_vdag_vdag_set_device_info" = x""yes; then : + ac_dag_have_vdag="1" +else + ac_dag_have_vdag="0" +fi + + if test "$ac_dag_have_vdag" = 1; then + +$as_echo "#define HAVE_DAG_VDAG 1" >>confdefs.h + + LIBS="$LIBS -lpthread" + fi + fi + + +$as_echo "#define HAVE_DAG_API 1" >>confdefs.h + +fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we have the DAG API" >&5 +$as_echo_n "checking whether we have the DAG API... " >&6; } + +if test $ac_cv_lbl_dag_api = no; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + if test "$want_dag" = yes; then + # User wanted DAG support but we couldn't find it. + as_fn_error $? "DAG API requested, but not found at $dag_root: use --without-dag" "$LINENO" 5 + fi + + if test "$V_PCAP" = dag; then + # User requested "dag" capture type but the DAG API wasn't + # found. + as_fn_error $? "Specifying the capture type as \"dag\" requires the DAG API to be present; use the --with-dag options to specify the location. (Try \"./configure --help\" for more information.)" "$LINENO" 5 + fi +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } +fi + + +# Check whether --with-septel was given. +if test "${with_septel+set}" = set; then : + withval=$with_septel; + if test "$withval" = no + then + want_septel=no + elif test "$withval" = yes + then + want_septel=yes + septel_root= + else + want_septel=yes + septel_root=$withval + fi + +else + + # + # Use Septel API if present, otherwise don't + # + want_septel=ifpresent + septel_root=./../septel + +fi + +ac_cv_lbl_septel_api=no +case "$V_PCAP" in +linux|septel) + # + # We support the Septel API if we're on Linux, or if we're building + # a Septel-only libpcap. + # + ;; +*) + # + # If the user explicitly requested Septel, tell them it's not + # supported. + # + # If they expressed no preference, don't include it. + # + if test $want_septel = yes; then + as_fn_error $? "Septel support only available with 'linux' and 'septel' packet capture types" "$LINENO" 5 + elif test $want_septel = yes; then + want_septel=no + fi + ;; +esac + +if test "$with_septel" != no; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we have Septel API" >&5 +$as_echo_n "checking whether we have Septel API... " >&6; } + + if test -z "$septel_root"; then + septel_root=$srcdir/../septel + fi + + septel_tools_dir="$septel_root" + septel_include_dir="$septel_root/INC" + + ac_cv_lbl_septel_api=no + if test -r "$septel_include_dir/msg.h"; then + V_INCLS="$V_INCLS -I$septel_include_dir" + ADDLOBJS="$ADDLOBJS $septel_tools_dir/asciibin.o $septel_tools_dir/bit2byte.o $septel_tools_dir/confirm.o $septel_tools_dir/fmtmsg.o $septel_tools_dir/gct_unix.o $septel_tools_dir/hqueue.o $septel_tools_dir/ident.o $septel_tools_dir/mem.o $septel_tools_dir/pack.o $septel_tools_dir/parse.o $septel_tools_dir/pool.o $septel_tools_dir/sdlsig.o $septel_tools_dir/strtonum.o $septel_tools_dir/timer.o $septel_tools_dir/trace.o" + ADDLARCHIVEOBJS="$ADDLARCHIVEOBJS $septel_tools_dir/asciibin.o $septel_tools_dir/bit2byte.o $septel_tools_dir/confirm.o $septel_tools_dir/fmtmsg.o $septel_tools_dir/gct_unix.o $septel_tools_dir/hqueue.o $septel_tools_dir/ident.o $septel_tools_dir/mem.o $septel_tools_dir/pack.o $septel_tools_dir/parse.o $septel_tools_dir/pool.o $septel_tools_dir/sdlsig.o $septel_tools_dir/strtonum.o $septel_tools_dir/timer.o $septel_tools_dir/trace.o" + + if test "$V_PCAP" != septel ; then + SSRC="pcap-septel.c" + fi + ac_cv_lbl_septel_api=yes + fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_septel_api" >&5 +$as_echo "$ac_cv_lbl_septel_api" >&6; } + if test $ac_cv_lbl_septel_api = no; then + if test "$want_septel" = yes; then + as_fn_error $? "Septel API not found under directory $septel_root; use --without-septel" "$LINENO" 5 + fi + else + +$as_echo "#define HAVE_SEPTEL_API 1" >>confdefs.h + + fi +fi + +if test "$V_PCAP" = septel -a "$ac_cv_lbl_septel_api" = no; then + as_fn_error $? "Specifying the capture type as 'septel' requires the Septel API to be present; use --with-septel=DIR" "$LINENO" 5 +fi + +# Check for Myricom SNF support. + +# Check whether --with-snf was given. +if test "${with_snf+set}" = set; then : + withval=$with_snf; + if test "$withval" = no + then + # User explicitly doesn't want SNF + want_snf=no + elif test "$withval" = yes + then + # User wants SNF support but hasn't specific a directory. + want_snf=yes + else + # User wants SNF support with a specified directory. + want_snf=yes + snf_root=$withval + fi + +else + + # + # Use Sniffer API if present, otherwise don't + # + want_snf=ifpresent + +fi + + + +# Check whether --with-snf-includes was given. +if test "${with_snf_includes+set}" = set; then : + withval=$with_snf_includes; + # User wants SNF with specific header directory + want_snf=yes + snf_include_dir=$withval + +fi + + + +# Check whether --with-snf-libraries was given. +if test "${with_snf_libraries+set}" = set; then : + withval=$with_snf_libraries; + # User wants SNF with specific lib directory + want_snf=yes + snf_lib_dir=$withval + +fi + + +case "$V_PCAP" in +bpf|linux|snf) + # + # We support the Sniffer API if we're on BSD, Linux, or if we're + # building a Sniffer-only libpcap. + # + ;; +*) + # + # If the user explicitly requested Sniffer, tell them it's not + # supported. + # + # If they expressed no preference, don't include it. + # + if test $want_snf = yes; then + as_fn_error $? "Myricom SNF support only available with 'bpf' 'linux' and 'snf' packet capture types" "$LINENO" 5 + elif test $want_snf = yes; then + want_snf=no + fi + ;; +esac + +ac_cv_lbl_snf_api=no +if test "$with_snf" != no; then + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we have Myricom Sniffer API" >&5 +$as_echo_n "checking whether we have Myricom Sniffer API... " >&6; } + + if test -z "$snf_root"; then + snf_root=/opt/snf + fi + + if test -z "$snf_include_dir"; then + snf_include_dir="$snf_root/include" + fi + + if test -z "$snf_lib_dir"; then + snf_lib_dir="$snf_root/lib" + fi + + if test -f "$snf_include_dir/snf.h"; then + ac_cv_lbl_snf_api=yes + fi + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_snf_api ($snf_root)" >&5 +$as_echo "$ac_cv_lbl_snf_api ($snf_root)" >&6; } + + if test $ac_cv_lbl_snf_api = no; then + if test "$want_snf" = yes; then + as_fn_error $? "SNF API headers not found under $snf_include_dir; use --without-snf" "$LINENO" 5 + fi + else + saved_ldflags=$LDFLAGS + LDFLAGS="$LDFLAGS -L$snf_lib_dir" + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for snf_init in -lsnf" >&5 +$as_echo_n "checking for snf_init in -lsnf... " >&6; } +if test "${ac_cv_lib_snf_snf_init+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-lsnf $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char snf_init (); +int +main () +{ +return snf_init (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_snf_snf_init=yes +else + ac_cv_lib_snf_snf_init=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_snf_snf_init" >&5 +$as_echo "$ac_cv_lib_snf_snf_init" >&6; } +if test "x$ac_cv_lib_snf_snf_init" = x""yes; then : + ac_cv_lbl_snf_api="yes" +else + ac_cv_lbl_snf_api="no" +fi + + LDFLAGS="$saved_ldflags" + + if test $ac_cv_lbl_snf_api = no; then + if test "$want_snf" = yes; then + as_fn_error $? "SNF API cannot correctly be linked check config.log; use --without-snf" "$LINENO" 5 + fi + else + V_INCLS="$V_INCLS -I$snf_include_dir" + LIBS="$LIBS -lsnf" + LDFLAGS="$LDFLAGS -L$snf_lib_dir" + if test "$V_PCAP" != snf ; then + SSRC="pcap-snf.c" + fi + +$as_echo "#define HAVE_SNF_API 1" >>confdefs.h + + fi + fi +fi + +if test "$V_PCAP" = snf -a "$ac_cv_lbl_snf_api" = no; then + as_fn_error $? "Specifying the capture type as 'snf' requires the Myricom Sniffer API to be present; use --with-snf=DIR" "$LINENO" 5 +fi + + +# Check whether --with-flex was given. +if test "${with_flex+set}" = set; then : + withval=$with_flex; +fi + + +# Check whether --with-bison was given. +if test "${with_bison+set}" = set; then : + withval=$with_bison; +fi + + if test "$with_flex" = no ; then + V_LEX=lex + else + for ac_prog in flex +do + # Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if test "${ac_cv_prog_V_LEX+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$V_LEX"; then + ac_cv_prog_V_LEX="$V_LEX" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_V_LEX="$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +V_LEX=$ac_cv_prog_V_LEX +if test -n "$V_LEX"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $V_LEX" >&5 +$as_echo "$V_LEX" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$V_LEX" && break +done +test -n "$V_LEX" || V_LEX="lex" + + fi + if test "$V_LEX" = flex ; then + # The -V flag was added in 2.4 + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for flex 2.4 or higher" >&5 +$as_echo_n "checking for flex 2.4 or higher... " >&6; } + if test "${ac_cv_lbl_flex_v24+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if flex -V >/dev/null 2>&1; then + ac_cv_lbl_flex_v24=yes + else + ac_cv_lbl_flex_v24=no + fi +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_flex_v24" >&5 +$as_echo "$ac_cv_lbl_flex_v24" >&6; } + if test $ac_cv_lbl_flex_v24 = no ; then + s="2.4 or higher required" + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: ignoring obsolete flex executable ($s)" >&5 +$as_echo "$as_me: WARNING: ignoring obsolete flex executable ($s)" >&2;} + V_LEX=lex + fi + fi + if test "$with_bison" = no ; then + V_YACC=yacc + else + for ac_prog in bison +do + # Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if test "${ac_cv_prog_V_YACC+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$V_YACC"; then + ac_cv_prog_V_YACC="$V_YACC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_V_YACC="$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +V_YACC=$ac_cv_prog_V_YACC +if test -n "$V_YACC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $V_YACC" >&5 +$as_echo "$V_YACC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$V_YACC" && break +done +test -n "$V_YACC" || V_YACC="yacc" + + fi + if test "$V_YACC" = bison ; then + V_YACC="$V_YACC -y" + fi + if test "$V_LEX" != lex -a "$V_YACC" = yacc -o "$V_LEX" = lex -a "$V_YACC" != yacc ; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: don't have both flex and bison; reverting to lex/yacc" >&5 +$as_echo "$as_me: WARNING: don't have both flex and bison; reverting to lex/yacc" >&2;} + V_LEX=lex + V_YACC=yacc + fi + if test "$V_LEX" = flex -a -n "pcap_" ; then + V_LEX="$V_LEX -Ppcap_" + V_YACC="$V_YACC -p pcap_" + fi +if test "$V_LEX" = lex ; then +# Some versions of lex can't handle the definitions section of scanner.l . +# Try lexing it and complain if it can't deal. + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for capable lex" >&5 +$as_echo_n "checking for capable lex... " >&6; } +if test "${tcpdump_cv_capable_lex+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if lex -t scanner.l > /dev/null 2>&1; then + tcpdump_cv_capable_lex=yes + else + tcpdump_cv_capable_lex=insufficient + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $tcpdump_cv_capable_lex" >&5 +$as_echo "$tcpdump_cv_capable_lex" >&6; } + if test $tcpdump_cv_capable_lex = insufficient ; then + as_fn_error $? "Your operating system's lex is insufficient to compile + libpcap. flex is a lex replacement that has many advantages, including + being able to compile libpcap. For more information, see + http://www.gnu.org/software/flex/flex.html ." "$LINENO" 5 + fi +fi + +# +# Assume, by default, no support for shared libraries and V7/BSD convention +# for man pages (file formats in section 5, miscellaneous info in section 7). +# Individual cases can override this. +# +DYEXT="none" +MAN_FILE_FORMATS=5 +MAN_MISC_INFO=7 +case "$host_os" in + +aix*) + +$as_echo "#define _SUN 1" >>confdefs.h + + + # + # AIX makes it fun to build shared and static libraries, + # because they're *both* ".a" archive libraries. We + # build the static library for the benefit of the traditional + # scheme of building libpcap and tcpdump in subdirectories of + # the same directory, with tcpdump statically linked with the + # libpcap in question, but we also build a shared library as + # "libpcap.shareda" and install *it*, rather than the static + # library, as "libpcap.a". + # + DYEXT="shareda" + + case "$V_PCAP" in + + dlpi) + # + # If we're using DLPI, applications will need to + # use /lib/pse.exp if present, as we use the + # STREAMS routines. + # + pseexe="/lib/pse.exp" + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $pseexe" >&5 +$as_echo_n "checking for $pseexe... " >&6; } + if test -f $pseexe ; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + LIBS="-I:$pseexe" + fi + ;; + + bpf) + # + # If we're using BPF, we need "-lodm" and "-lcfg", as + # we use them to load the BPF module. + # + LIBS="-lodm -lcfg" + ;; + esac + ;; + +darwin*) + DYEXT="dylib" + V_CCOPT="$V_CCOPT -fno-common" + # Check whether --enable-universal was given. +if test "${enable_universal+set}" = set; then : + enableval=$enable_universal; +fi + + if test "$enable_universal" != "no"; then + case "$host_os" in + + darwin9.*) + # + # Leopard. Build for 32-bit PowerPC, 64-bit + # PowerPC, x86, and x86-64, with 32-bit PowerPC + # first. (That's what Apple does.) + # + V_CCOPT="$V_CCOPT -arch ppc -arch ppc64 -arch i386 -arch x86_64" + LDFLAGS="$LDFLAGS -arch ppc -arch ppc64 -arch i386 -arch x86_64" + ;; + + darwin10.*) + # + # Snow Leopard. Build for x86-64, x86, and + # 32-bit PowerPC, with x86-64 first. (That's + # what Apple does, even though Snow Leopard + # doesn't run on PPC, so PPC libpcap runs under + # Rosetta, and Rosetta doesn't support BPF + # ioctls, so PPC programs can't do live + # captures.) + # + V_CCOPT="$V_CCOPT -arch x86_64 -arch i386 -arch ppc" + LDFLAGS="$LDFLAGS -arch x86_64 -arch i386 -arch ppc" + ;; + + darwin11.*) + # + # Lion. Build for x86-64 and x86, with x86-64 + # first. (That's probably what Apple does, + # given that Rosetta is gone.) + # + V_CCOPT="$V_CCOPT -arch x86_64 -arch i386" + LDFLAGS="$LDFLAGS -arch x86_64 -arch i386" + ;; + esac + fi + ;; + +hpux9*) + +$as_echo "#define HAVE_HPUX9 1" >>confdefs.h + + + # + # Use System V conventions for man pages. + # + MAN_FILE_FORMATS=4 + MAN_MISC_INFO=5 + ;; + +hpux10.0*) + + # + # Use System V conventions for man pages. + # + MAN_FILE_FORMATS=4 + MAN_MISC_INFO=5 + ;; + +hpux10.1*) + + # + # Use System V conventions for man pages. + # + MAN_FILE_FORMATS=4 + MAN_MISC_INFO=5 + ;; + +hpux*) + +$as_echo "#define HAVE_HPUX10_20_OR_LATER 1" >>confdefs.h + + if test "`uname -m`" = "ia64"; then + DYEXT="so" + else + DYEXT="sl" + fi + + # + # "-b" builds a shared library; "+h" sets the soname. + # + SHLIB_OPT="-b" + SONAME_OPT="+h" + + # + # Use System V conventions for man pages. + # + MAN_FILE_FORMATS=4 + MAN_MISC_INFO=5 + ;; + +irix*) + # + # Use System V conventions for man pages. + # + MAN_FILE_FORMATS=4 + MAN_MISC_INFO=5 + ;; + +linux*|freebsd*|netbsd*|openbsd*|dragonfly*|kfreebsd*|gnu*) + DYEXT="so" + + # + # Compiler assumed to be GCC; run-time linker may require a -R + # flag. + # + if test "$libdir" != "/usr/lib"; then + V_RFLAGS=-Wl,-R$libdir + fi + ;; + +osf*) + DYEXT="so" + + # + # Use System V conventions for man pages. + # + MAN_FILE_FORMATS=4 + MAN_MISC_INFO=5 + ;; + +sinix*) + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if SINIX compiler defines sinix" >&5 +$as_echo_n "checking if SINIX compiler defines sinix... " >&6; } + if test "${ac_cv_cc_sinix_defined+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ +int i = sinix; + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_cc_sinix_defined=yes +else + ac_cv_cc_sinix_defined=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cc_sinix_defined" >&5 +$as_echo "$ac_cv_cc_sinix_defined" >&6; } + if test $ac_cv_cc_sinix_defined = no ; then + +$as_echo "#define sinix 1" >>confdefs.h + + fi + ;; + +solaris*) + +$as_echo "#define HAVE_SOLARIS 1" >>confdefs.h + + + DYEXT="so" + # + # Use System V conventions for man pages. + # + MAN_FILE_FORMATS=4 + MAN_MISC_INFO=5 + ;; +esac + +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args. +set dummy ${ac_tool_prefix}ranlib; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if test "${ac_cv_prog_RANLIB+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$RANLIB"; then + ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +RANLIB=$ac_cv_prog_RANLIB +if test -n "$RANLIB"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5 +$as_echo "$RANLIB" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_RANLIB"; then + ac_ct_RANLIB=$RANLIB + # Extract the first word of "ranlib", so it can be a program name with args. +set dummy ranlib; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if test "${ac_cv_prog_ac_ct_RANLIB+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_RANLIB"; then + ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_ac_ct_RANLIB="ranlib" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB +if test -n "$ac_ct_RANLIB"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5 +$as_echo "$ac_ct_RANLIB" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_RANLIB" = x; then + RANLIB=":" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + RANLIB=$ac_ct_RANLIB + fi +else + RANLIB="$ac_cv_prog_RANLIB" +fi + +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args. +set dummy ${ac_tool_prefix}ar; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if test "${ac_cv_prog_AR+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$AR"; then + ac_cv_prog_AR="$AR" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_AR="${ac_tool_prefix}ar" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +AR=$ac_cv_prog_AR +if test -n "$AR"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AR" >&5 +$as_echo "$AR" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_AR"; then + ac_ct_AR=$AR + # Extract the first word of "ar", so it can be a program name with args. +set dummy ar; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if test "${ac_cv_prog_ac_ct_AR+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_AR"; then + ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_ac_ct_AR="ar" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_AR=$ac_cv_prog_ac_ct_AR +if test -n "$ac_ct_AR"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5 +$as_echo "$ac_ct_AR" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_AR" = x; then + AR="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + AR=$ac_ct_AR + fi +else + AR="$ac_cv_prog_AR" +fi + + +rm -f os-proto.h + if test "${LBL_CFLAGS+set}" = set; then + V_CCOPT="$V_CCOPT ${LBL_CFLAGS}" + fi + if test -f .devel ; then + if test "$GCC" = yes ; then + if test "${LBL_CFLAGS+set}" != set; then + if test "$ac_cv_prog_cc_g" = yes ; then + V_CCOPT="-g $V_CCOPT" + fi + V_CCOPT="$V_CCOPT -Wall" + if test $ac_cv_lbl_gcc_vers -gt 1 ; then + V_CCOPT="$V_CCOPT -Wmissing-prototypes -Wstrict-prototypes" + fi + fi + else + case "$host_os" in + + irix6*) + V_CCOPT="$V_CCOPT -n32" + ;; + + *) + ;; + esac + fi + os=`echo $host_os | sed -e 's/\([0-9][0-9]*\)[^0-9].*$/\1/'` + name="lbl/os-$os.h" + if test -f $name ; then + ln -s $name os-proto.h + +$as_echo "#define HAVE_OS_PROTO_H 1" >>confdefs.h + + else + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: can't find $name" >&5 +$as_echo "$as_me: WARNING: can't find $name" >&2;} + fi + fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if sockaddr struct has the sa_len member" >&5 +$as_echo_n "checking if sockaddr struct has the sa_len member... " >&6; } + if test "${ac_cv_lbl_sockaddr_has_sa_len+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +# include +# include +int +main () +{ +u_int i = sizeof(((struct sockaddr *)0)->sa_len) + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_lbl_sockaddr_has_sa_len=yes +else + ac_cv_lbl_sockaddr_has_sa_len=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_sockaddr_has_sa_len" >&5 +$as_echo "$ac_cv_lbl_sockaddr_has_sa_len" >&6; } + if test $ac_cv_lbl_sockaddr_has_sa_len = yes ; then + +$as_echo "#define HAVE_SOCKADDR_SA_LEN 1" >>confdefs.h + + fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if sockaddr_storage struct exists" >&5 +$as_echo_n "checking if sockaddr_storage struct exists... " >&6; } + if test "${ac_cv_lbl_has_sockaddr_storage+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +# include +# include +int +main () +{ +u_int i = sizeof (struct sockaddr_storage) + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_lbl_has_sockaddr_storage=yes +else + ac_cv_lbl_has_sockaddr_storage=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_has_sockaddr_storage" >&5 +$as_echo "$ac_cv_lbl_has_sockaddr_storage" >&6; } + if test $ac_cv_lbl_has_sockaddr_storage = yes ; then + +$as_echo "#define HAVE_SOCKADDR_STORAGE 1" >>confdefs.h + + fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if dl_hp_ppa_info_t struct has dl_module_id_1 member" >&5 +$as_echo_n "checking if dl_hp_ppa_info_t struct has dl_module_id_1 member... " >&6; } + if test "${ac_cv_lbl_dl_hp_ppa_info_t_has_dl_module_id_1+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +# include +# include +# include +int +main () +{ +u_int i = sizeof(((dl_hp_ppa_info_t *)0)->dl_module_id_1) + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_lbl_dl_hp_ppa_info_t_has_dl_module_id_1=yes +else + ac_cv_lbl_dl_hp_ppa_info_t_has_dl_module_id_1=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_dl_hp_ppa_info_t_has_dl_module_id_1" >&5 +$as_echo "$ac_cv_lbl_dl_hp_ppa_info_t_has_dl_module_id_1" >&6; } + if test $ac_cv_lbl_dl_hp_ppa_info_t_has_dl_module_id_1 = yes ; then + +$as_echo "#define HAVE_HP_PPA_INFO_T_DL_MODULE_ID_1 1" >>confdefs.h + + fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if unaligned accesses fail" >&5 +$as_echo_n "checking if unaligned accesses fail... " >&6; } + if test "${ac_cv_lbl_unaligned_fail+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + case "$host_cpu" in + + # + # These are CPU types where: + # + # the CPU faults on an unaligned access, but at least some + # OSes that support that CPU catch the fault and simulate + # the unaligned access (e.g., Alpha/{Digital,Tru64} UNIX) - + # the simulation is slow, so we don't want to use it; + # + # the CPU, I infer (from the old + # + # XXX: should also check that they don't do weird things (like on arm) + # + # comment) doesn't fault on unaligned accesses, but doesn't + # do a normal unaligned fetch, either (e.g., presumably, ARM); + # + # for whatever reason, the test program doesn't work + # (this has been claimed to be the case for several of those + # CPUs - I don't know what the problem is; the problem + # was reported as "the test program dumps core" for SuperH, + # but that's what the test program is *supposed* to do - + # it dumps core before it writes anything, so the test + # for an empty output file should find an empty output + # file and conclude that unaligned accesses don't work). + # + # This run-time test won't work if you're cross-compiling, so + # in order to support cross-compiling for a particular CPU, + # we have to wire in the list of CPU types anyway, as far as + # I know, so perhaps we should just have a set of CPUs on + # which we know it doesn't work, a set of CPUs on which we + # know it does work, and have the script just fail on other + # cpu types and update it when such a failure occurs. + # + alpha*|arm*|bfin*|hp*|mips*|sh*|sparc*|ia64|nv1) + ac_cv_lbl_unaligned_fail=yes + ;; + + *) + cat >conftest.c < +# include +# include + unsigned char a[5] = { 1, 2, 3, 4, 5 }; + main() { + unsigned int i; + pid_t pid; + int status; + /* avoid "core dumped" message */ + pid = fork(); + if (pid < 0) + exit(2); + if (pid > 0) { + /* parent */ + pid = waitpid(pid, &status, 0); + if (pid < 0) + exit(3); + exit(!WIFEXITED(status)); + } + /* child */ + i = *(unsigned int *)&a[1]; + printf("%d\n", i); + exit(0); + } +EOF + ${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS \ + conftest.c $LIBS >/dev/null 2>&1 + if test ! -x conftest ; then + ac_cv_lbl_unaligned_fail=yes + else + ./conftest >conftest.out + if test ! -s conftest.out ; then + ac_cv_lbl_unaligned_fail=yes + else + ac_cv_lbl_unaligned_fail=no + fi + fi + rm -f -r conftest* core core.conftest + ;; + esac +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lbl_unaligned_fail" >&5 +$as_echo "$ac_cv_lbl_unaligned_fail" >&6; } + if test $ac_cv_lbl_unaligned_fail = yes ; then + +$as_echo "#define LBL_ALIGN 1" >>confdefs.h + + fi + +# +# Makefile.in includes rules to generate version.h, so we assume +# that it will be generated if autoconf is used. +# + +$as_echo "#define HAVE_VERSION_H 1" >>confdefs.h + + +rm -f net +ln -s ${srcdir}/bpf/net net + + + + + + + + + + + + + + + + + + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for USB sniffing support" >&5 +$as_echo_n "checking for USB sniffing support... " >&6; } +case "$host_os" in +linux*) + +$as_echo "#define PCAP_SUPPORT_USB 1" >>confdefs.h + + USB_SRC=pcap-usb-linux.c + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + ac_usb_dev_name=`udevinfo -q name -p /sys/class/usb_device/usbmon 2>/dev/null` + if test $? -ne 0 ; then + ac_usb_dev_name="usbmon" + fi + +cat >>confdefs.h <<_ACEOF +#define LINUX_USB_MON_DEV "/dev/$ac_usb_dev_name" +_ACEOF + + { $as_echo "$as_me:${as_lineno-$LINENO}: Device for USB sniffing is /dev/$ac_usb_dev_name" >&5 +$as_echo "$as_me: Device for USB sniffing is /dev/$ac_usb_dev_name" >&6;} + # + # Do we have a version of available? + # If so, we might need it for . + # + for ac_header in linux/compiler.h +do : + ac_fn_c_check_header_mongrel "$LINENO" "linux/compiler.h" "ac_cv_header_linux_compiler_h" "$ac_includes_default" +if test "x$ac_cv_header_linux_compiler_h" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_LINUX_COMPILER_H 1 +_ACEOF + +fi + +done + + if test "$ac_cv_header_linux_compiler_h" = yes; then + # + # Yes - include it when testing for . + # + for ac_header in linux/usbdevice_fs.h +do : + ac_fn_c_check_header_compile "$LINENO" "linux/usbdevice_fs.h" "ac_cv_header_linux_usbdevice_fs_h" "#include +" +if test "x$ac_cv_header_linux_usbdevice_fs_h" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_LINUX_USBDEVICE_FS_H 1 +_ACEOF + +fi + +done + + else + for ac_header in linux/usbdevice_fs.h +do : + ac_fn_c_check_header_mongrel "$LINENO" "linux/usbdevice_fs.h" "ac_cv_header_linux_usbdevice_fs_h" "$ac_includes_default" +if test "x$ac_cv_header_linux_usbdevice_fs_h" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_LINUX_USBDEVICE_FS_H 1 +_ACEOF + +fi + +done + + fi + if test "$ac_cv_header_linux_usbdevice_fs_h" = yes; then + # + # OK, does it define bRequestType? Older versions of the kernel + # define fields with names like "requesttype, "request", and + # "value", rather than "bRequestType", "bRequest", and + # "wValue". + # + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if usbdevfs_ctrltransfer struct has bRequestType member" >&5 +$as_echo_n "checking if usbdevfs_ctrltransfer struct has bRequestType member... " >&6; } + if test "${ac_cv_usbdevfs_ctrltransfer_has_bRequestType+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +$ac_includes_default +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +#ifdef HAVE_LINUX_COMPILER_H +#include +#endif +#include +int +main () +{ +u_int i = sizeof(((struct usbdevfs_ctrltransfer *)0)->bRequestType) + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_usbdevfs_ctrltransfer_has_bRequestType=yes +else + ac_cv_usbdevfs_ctrltransfer_has_bRequestType=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_usbdevfs_ctrltransfer_has_bRequestType" >&5 +$as_echo "$ac_cv_usbdevfs_ctrltransfer_has_bRequestType" >&6; } + if test $ac_cv_usbdevfs_ctrltransfer_has_bRequestType = yes ; then + +$as_echo "#define HAVE_USBDEVFS_CTRLTRANSFER_BREQUESTTYPE 1" >>confdefs.h + + fi + fi + ;; +*) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + ;; +esac + + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the platform could support netfilter sniffing" >&5 +$as_echo_n "checking whether the platform could support netfilter sniffing... " >&6; } +case "$host_os" in +linux*) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + # + # Life's too short to deal with trying to get this to compile + # if you don't get the right types defined with + # __KERNEL_STRICT_NAMES getting defined by some other include. + # + # Check whether the includes Just Work. If not, don't turn on + # netfilter support. + # + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we can compile the netfilter support" >&5 +$as_echo_n "checking whether we can compile the netfilter support... " >&6; } + if test "${ac_cv_netfilter_can_compile+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +$ac_includes_default +#include +#include + +#include +#include +#include +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_netfilter_can_compile=yes +else + ac_cv_netfilter_can_compile=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_netfilter_can_compile" >&5 +$as_echo "$ac_cv_netfilter_can_compile" >&6; } + if test $ac_cv_netfilter_can_compile = yes ; then + +$as_echo "#define PCAP_SUPPORT_NETFILTER 1" >>confdefs.h + + NETFILTER_SRC=pcap-netfilter-linux.c + fi + ;; +*) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + ;; +esac + + + +# Check whether --enable-bluetooth was given. +if test "${enable_bluetooth+set}" = set; then : + enableval=$enable_bluetooth; +else + enable_bluetooth=yes +fi + + +if test "x$enable_bluetooth" != "xno" ; then + case "$host_os" in + linux*) + ac_fn_c_check_header_mongrel "$LINENO" "bluetooth/bluetooth.h" "ac_cv_header_bluetooth_bluetooth_h" "$ac_includes_default" +if test "x$ac_cv_header_bluetooth_bluetooth_h" = x""yes; then : + + +$as_echo "#define PCAP_SUPPORT_BT 1" >>confdefs.h + + BT_SRC=pcap-bt-linux.c + { $as_echo "$as_me:${as_lineno-$LINENO}: Bluetooth sniffing is supported" >&5 +$as_echo "$as_me: Bluetooth sniffing is supported" >&6;} + +else + { $as_echo "$as_me:${as_lineno-$LINENO}: Bluetooth sniffing is not supported; install bluez-lib devel to enable it" >&5 +$as_echo "$as_me: Bluetooth sniffing is not supported; install bluez-lib devel to enable it" >&6;} + +fi + + + ;; + *) + { $as_echo "$as_me:${as_lineno-$LINENO}: no Bluetooth sniffing support implemented for $host_os" >&5 +$as_echo "$as_me: no Bluetooth sniffing support implemented for $host_os" >&6;} + ;; + esac + + +fi + +# Check whether --enable-canusb was given. +if test "${enable_canusb+set}" = set; then : + enableval=$enable_canusb; enable_canusb=yes +fi + + +if test "x$enable_canusb" != "xno" ; then + case "$host_os" in + linux*) + ac_fn_c_check_header_mongrel "$LINENO" "libusb-1.0/libusb.h" "ac_cv_header_libusb_1_0_libusb_h" "$ac_includes_default" +if test "x$ac_cv_header_libusb_1_0_libusb_h" = x""yes; then : + + +$as_echo "#define PCAP_SUPPORT_CANUSB 1" >>confdefs.h + + CANUSB_SRC=pcap-canusb-linux.c + LIBS="-lusb-1.0 $LIBS" + { $as_echo "$as_me:${as_lineno-$LINENO}: canusb sniffing is supported" >&5 +$as_echo "$as_me: canusb sniffing is supported" >&6;} + +else + { $as_echo "$as_me:${as_lineno-$LINENO}: canusb sniffing is not supported; install libusb1.0 lib devel to enable it" >&5 +$as_echo "$as_me: canusb sniffing is not supported; install libusb1.0 lib devel to enable it" >&6;} + +fi + + + ;; + *) + { $as_echo "$as_me:${as_lineno-$LINENO}: no canusb support implemented for $host_os" >&5 +$as_echo "$as_me: no canusb support implemented for $host_os" >&6;} + ;; + esac + + +fi + +# Check whether --enable-can was given. +if test "${enable_can+set}" = set; then : + enableval=$enable_can; +else + enable_can=yes +fi + + +if test "x$enable_can" != "xno" ; then + case "$host_os" in + linux*) + ac_fn_c_check_header_compile "$LINENO" "linux/can.h" "ac_cv_header_linux_can_h" "#include + +" +if test "x$ac_cv_header_linux_can_h" = x""yes; then : + +$as_echo "#define PCAP_SUPPORT_CAN 1" >>confdefs.h + + CAN_SRC=pcap-can-linux.c + { $as_echo "$as_me:${as_lineno-$LINENO}: CAN sniffing is supported" >&5 +$as_echo "$as_me: CAN sniffing is supported" >&6;} +else + { $as_echo "$as_me:${as_lineno-$LINENO}: CAN sniffing is not supported" >&5 +$as_echo "$as_me: CAN sniffing is not supported" >&6;} +fi + + + ;; + *) + { $as_echo "$as_me:${as_lineno-$LINENO}: no CAN sniffing support implemented for $host_os" >&5 +$as_echo "$as_me: no CAN sniffing support implemented for $host_os" >&6;} + ;; + esac + + +fi + +case "$host_os" in +linux*) + for ac_header in linux/net_tstamp.h +do : + ac_fn_c_check_header_mongrel "$LINENO" "linux/net_tstamp.h" "ac_cv_header_linux_net_tstamp_h" "$ac_includes_default" +if test "x$ac_cv_header_linux_net_tstamp_h" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_LINUX_NET_TSTAMP_H 1 +_ACEOF + +fi + +done + + ;; +*) + { $as_echo "$as_me:${as_lineno-$LINENO}: no hardware timestamp support implemented for $host_os" >&5 +$as_echo "$as_me: no hardware timestamp support implemented for $host_os" >&6;} + ;; +esac + +# Find a good install program. We prefer a C program (faster), +# so one script is as good as another. But avoid the broken or +# incompatible versions: +# SysV /etc/install, /usr/sbin/install +# SunOS /usr/etc/install +# IRIX /sbin/install +# AIX /bin/install +# AmigaOS /C/install, which installs bootblocks on floppy discs +# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag +# AFS /usr/afsws/bin/install, which mishandles nonexistent args +# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff" +# OS/2's system install, which has a completely different semantic +# ./install, which can be erroneously created by make from ./install.sh. +# Reject install programs that cannot install multiple files. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5 +$as_echo_n "checking for a BSD-compatible install... " >&6; } +if test -z "$INSTALL"; then +if test "${ac_cv_path_install+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + # Account for people who put trailing slashes in PATH elements. +case $as_dir/ in #(( + ./ | .// | /[cC]/* | \ + /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \ + ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \ + /usr/ucb/* ) ;; + *) + # OSF1 and SCO ODT 3.0 have their own names for install. + # Don't use installbsd from OSF since it installs stuff as root + # by default. + for ac_prog in ginstall scoinst install; do + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then + if test $ac_prog = install && + grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then + # AIX install. It has an incompatible calling convention. + : + elif test $ac_prog = install && + grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then + # program-specific install script used by HP pwplus--don't use. + : + else + rm -rf conftest.one conftest.two conftest.dir + echo one > conftest.one + echo two > conftest.two + mkdir conftest.dir + if "$as_dir/$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir" && + test -s conftest.one && test -s conftest.two && + test -s conftest.dir/conftest.one && + test -s conftest.dir/conftest.two + then + ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c" + break 3 + fi + fi + fi + done + done + ;; +esac + + done +IFS=$as_save_IFS + +rm -rf conftest.one conftest.two conftest.dir + +fi + if test "${ac_cv_path_install+set}" = set; then + INSTALL=$ac_cv_path_install + else + # As a last resort, use the slow shell script. Don't cache a + # value for INSTALL within a source directory, because that will + # break other packages using the cache if that directory is + # removed, or if the value is a relative name. + INSTALL=$ac_install_sh + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5 +$as_echo "$INSTALL" >&6; } + +# Use test -z because SunOS4 sh mishandles braces in ${var-val}. +# It thinks the first close brace ends the variable substitution. +test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}' + +test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}' + +test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644' + + +ac_config_headers="$ac_config_headers config.h" + + +ac_config_files="$ac_config_files Makefile pcap-filter.manmisc pcap-linktype.manmisc pcap-tstamp.manmisc pcap-savefile.manfile pcap.3pcap pcap_compile.3pcap pcap_datalink.3pcap pcap_dump_open.3pcap pcap_list_datalinks.3pcap pcap_list_tstamp_types.3pcap pcap_open_dead.3pcap pcap_open_offline.3pcap pcap_set_tstamp_type.3pcap" + +cat >confcache <<\_ACEOF +# This file is a shell script that caches the results of configure +# tests run on this system so they can be shared between configure +# scripts and configure runs, see configure's option --config-cache. +# It is not useful on other systems. If it contains results you don't +# want to keep, you may remove or edit it. +# +# config.status only pays attention to the cache file if you give it +# the --recheck option to rerun configure. +# +# `ac_cv_env_foo' variables (set or unset) will be overridden when +# loading this file, other *unset* `ac_cv_foo' will be assigned the +# following values. + +_ACEOF + +# The following way of writing the cache mishandles newlines in values, +# but we know of no workaround that is simple, portable, and efficient. +# So, we kill variables containing newlines. +# Ultrix sh set writes to stderr and can't be redirected directly, +# and sets the high bit in the cache file unless we assign to the vars. +( + for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do + eval ac_val=\$$ac_var + case $ac_val in #( + *${as_nl}*) + case $ac_var in #( + *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5 +$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;; + esac + case $ac_var in #( + _ | IFS | as_nl) ;; #( + BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #( + *) { eval $ac_var=; unset $ac_var;} ;; + esac ;; + esac + done + + (set) 2>&1 | + case $as_nl`(ac_space=' '; set) 2>&1` in #( + *${as_nl}ac_space=\ *) + # `set' does not quote correctly, so add quotes: double-quote + # substitution turns \\\\ into \\, and sed turns \\ into \. + sed -n \ + "s/'/'\\\\''/g; + s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p" + ;; #( + *) + # `set' quotes correctly as required by POSIX, so do not add quotes. + sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p" + ;; + esac | + sort +) | + sed ' + /^ac_cv_env_/b end + t clear + :clear + s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/ + t end + s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/ + :end' >>confcache +if diff "$cache_file" confcache >/dev/null 2>&1; then :; else + if test -w "$cache_file"; then + test "x$cache_file" != "x/dev/null" && + { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5 +$as_echo "$as_me: updating cache $cache_file" >&6;} + cat confcache >$cache_file + else + { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5 +$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;} + fi +fi +rm -f confcache + +test "x$prefix" = xNONE && prefix=$ac_default_prefix +# Let make expand exec_prefix. +test "x$exec_prefix" = xNONE && exec_prefix='${prefix}' + +DEFS=-DHAVE_CONFIG_H + +ac_libobjs= +ac_ltlibobjs= +U= +for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue + # 1. Remove the extension, and $U if already installed. + ac_script='s/\$U\././;s/\.o$//;s/\.obj$//' + ac_i=`$as_echo "$ac_i" | sed "$ac_script"` + # 2. Prepend LIBOBJDIR. When used with automake>=1.10 LIBOBJDIR + # will be set to the directory where LIBOBJS objects are built. + as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext" + as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo' +done +LIBOBJS=$ac_libobjs + +LTLIBOBJS=$ac_ltlibobjs + + + +: ${CONFIG_STATUS=./config.status} +ac_write_fail=0 +ac_clean_files_save=$ac_clean_files +ac_clean_files="$ac_clean_files $CONFIG_STATUS" +{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5 +$as_echo "$as_me: creating $CONFIG_STATUS" >&6;} +as_write_fail=0 +cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1 +#! $SHELL +# Generated by $as_me. +# Run this file to recreate the current configuration. +# Compiler output produced by configure, useful for debugging +# configure, is in config.log if it exists. + +debug=false +ac_cs_recheck=false +ac_cs_silent=false + +SHELL=\${CONFIG_SHELL-$SHELL} +export SHELL +_ASEOF +cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1 +## -------------------- ## +## M4sh Initialization. ## +## -------------------- ## + +# Be more Bourne compatible +DUALCASE=1; export DUALCASE # for MKS sh +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi + + +as_nl=' +' +export as_nl +# Printing a long string crashes Solaris 7 /usr/bin/printf. +as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo +# Prefer a ksh shell builtin over an external printf program on Solaris, +# but without wasting forks for bash or zsh. +if test -z "$BASH_VERSION$ZSH_VERSION" \ + && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='print -r --' + as_echo_n='print -rn --' +elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='printf %s\n' + as_echo_n='printf %s' +else + if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then + as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' + as_echo_n='/usr/ucb/echo -n' + else + as_echo_body='eval expr "X$1" : "X\\(.*\\)"' + as_echo_n_body='eval + arg=$1; + case $arg in #( + *"$as_nl"*) + expr "X$arg" : "X\\(.*\\)$as_nl"; + arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; + esac; + expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" + ' + export as_echo_n_body + as_echo_n='sh -c $as_echo_n_body as_echo' + fi + export as_echo_body + as_echo='sh -c $as_echo_body as_echo' +fi + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# IFS +# We need space, tab and new line, in precisely that order. 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"invalid argument: \`$ac_config_target'" "$LINENO" 5 ;; + esac +done + + +# If the user did not use the arguments to specify the items to instantiate, +# then the envvar interface is used. Set only those that are not. +# We use the long form for the default assignment because of an extremely +# bizarre bug on SunOS 4.1.3. +if $ac_need_defaults; then + test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files + test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers +fi + +# Have a temporary directory for convenience. Make it in the build tree +# simply because there is no reason against having it here, and in addition, +# creating and moving files from /tmp can sometimes cause problems. +# Hook for its removal unless debugging. +# Note that there is a small window in which the directory will not be cleaned: +# after its creation but before its name has been assigned to `$tmp'. +$debug || +{ + tmp= + trap 'exit_status=$? + { test -z "$tmp" || test ! -d "$tmp" || rm -fr "$tmp"; } && exit $exit_status +' 0 + trap 'as_fn_exit 1' 1 2 13 15 +} +# Create a (secure) tmp directory for tmp files. + +{ + tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` && + test -n "$tmp" && test -d "$tmp" +} || +{ + tmp=./conf$$-$RANDOM + (umask 077 && mkdir "$tmp") +} || as_fn_error $? "cannot create a temporary directory in ." 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"could not setup config files machinery" "$LINENO" 5 +_ACEOF + +# VPATH may cause trouble with some makes, so we remove sole $(srcdir), +# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and +# trailing colons and then remove the whole line if VPATH becomes empty +# (actually we leave an empty line to preserve line numbers). +if test "x$srcdir" = x.; then + ac_vpsub='/^[ ]*VPATH[ ]*=[ ]*/{ +h +s/// +s/^/:/ +s/[ ]*$/:/ +s/:\$(srcdir):/:/g +s/:\${srcdir}:/:/g +s/:@srcdir@:/:/g +s/^:*// +s/:*$// +x +s/\(=[ ]*\).*/\1/ +G +s/\n// +s/^[^=]*=[ ]*$// +}' +fi + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +fi # test -n "$CONFIG_FILES" + +# Set up the scripts for CONFIG_HEADERS section. +# No need to generate them if there are no CONFIG_HEADERS. +# This happens for instance with `./config.status Makefile'. +if test -n "$CONFIG_HEADERS"; then +cat >"$tmp/defines.awk" <<\_ACAWK || +BEGIN { +_ACEOF + +# Transform confdefs.h into an awk script `defines.awk', embedded as +# here-document in config.status, that substitutes the proper values into +# config.h.in to produce config.h. + +# Create a delimiter string that does not exist in confdefs.h, to ease +# handling of long lines. +ac_delim='%!_!# ' +for ac_last_try in false false :; do + ac_t=`sed -n "/$ac_delim/p" confdefs.h` + if test -z "$ac_t"; then + break + elif $ac_last_try; then + as_fn_error $? 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This is necessary, for example, + # in the case of _POSIX_SOURCE, which is predefined and required + # on some systems where configure will not decide to define it. + if (defundef == "undef") { + print "/*", prefix defundef, macro, "*/" + next + } + } +} +{ print } +_ACAWK +_ACEOF +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 + as_fn_error $? "could not setup config headers machinery" "$LINENO" 5 +fi # test -n "$CONFIG_HEADERS" + + +eval set X " :F $CONFIG_FILES :H $CONFIG_HEADERS " +shift +for ac_tag +do + case $ac_tag in + :[FHLC]) ac_mode=$ac_tag; continue;; + esac + case $ac_mode$ac_tag in + :[FHL]*:*);; + :L* | :C*:*) as_fn_error $? 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"could not create $ac_file" "$LINENO" 5 + +test -z "$ac_datarootdir_hack$ac_datarootdir_seen" && + { ac_out=`sed -n '/\${datarootdir}/p' "$tmp/out"`; test -n "$ac_out"; } && + { ac_out=`sed -n '/^[ ]*datarootdir[ ]*:*=/p' "$tmp/out"`; test -z "$ac_out"; } && + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir' +which seems to be undefined. Please make sure it is defined" >&5 +$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir' +which seems to be undefined. Please make sure it is defined" >&2;} + + rm -f "$tmp/stdin" + case $ac_file in + -) cat "$tmp/out" && rm -f "$tmp/out";; + *) rm -f "$ac_file" && mv "$tmp/out" "$ac_file";; + esac \ + || as_fn_error $? "could not create $ac_file" "$LINENO" 5 + ;; + :H) + # + # CONFIG_HEADER + # + if test x"$ac_file" != x-; then + { + $as_echo "/* $configure_input */" \ + && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs" + } >"$tmp/config.h" \ + || as_fn_error $? "could not create $ac_file" "$LINENO" 5 + if diff "$ac_file" "$tmp/config.h" >/dev/null 2>&1; then + { $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5 +$as_echo "$as_me: $ac_file is unchanged" >&6;} + else + rm -f "$ac_file" + mv "$tmp/config.h" "$ac_file" \ + || as_fn_error $? "could not create $ac_file" "$LINENO" 5 + fi + else + $as_echo "/* $configure_input */" \ + && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs" \ + || as_fn_error $? "could not create -" "$LINENO" 5 + fi + ;; + + + esac + +done # for ac_tag + + +as_fn_exit 0 +_ACEOF +ac_clean_files=$ac_clean_files_save + +test $ac_write_fail = 0 || + as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5 + + +# configure is writing to config.log, and then calls config.status. +# config.status does its own redirection, appending to config.log. +# Unfortunately, on DOS this fails, as config.log is still kept open +# by configure, so config.status won't be able to write to it; its +# output is simply discarded. So we exec the FD to /dev/null, +# effectively closing config.log, so it can be properly (re)opened and +# appended to by config.status. When coming back to configure, we +# need to make the FD available again. +if test "$no_create" != yes; then + ac_cs_success=: + ac_config_status_args= + test "$silent" = yes && + ac_config_status_args="$ac_config_status_args --quiet" + exec 5>/dev/null + $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false + exec 5>>config.log + # Use ||, not &&, to avoid exiting from the if with $? = 1, which + # would make configure fail if this is the last instruction. + $ac_cs_success || as_fn_exit 1 +fi +if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5 +$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;} +fi + + +if test -f .devel ; then + make depend +fi +exit 0 diff --git a/configure.in b/configure.in new file mode 100644 index 0000000..8432d2a --- /dev/null +++ b/configure.in @@ -0,0 +1,1471 @@ +dnl @(#) $Header: /tcpdump/master/libpcap/configure.in,v 1.168 2008-12-23 20:49:26 guy Exp $ (LBL) +dnl +dnl Copyright (c) 1994, 1995, 1996, 1997 +dnl The Regents of the University of California. All rights reserved. +dnl +dnl Process this file with autoconf to produce a configure script. +dnl + +# +# See +# +# http://ftp.gnu.org/gnu/config/README +# +# for the URLs to use to fetch new versions of config.guess and +# config.sub. +# + +AC_REVISION($Revision: 1.168 $) +AC_PREREQ(2.50) +AC_INIT(pcap.c) + +AC_CANONICAL_SYSTEM + +AC_LBL_C_INIT_BEFORE_CC(V_CCOPT, V_INCLS) +AC_PROG_CC +AC_LBL_C_INIT(V_CCOPT, V_INCLS) +AC_LBL_SHLIBS_INIT +AC_LBL_C_INLINE +AC_C___ATTRIBUTE__ + +AC_CHECK_HEADERS(sys/bitypes.h) + +AC_CHECK_TYPE([int8_t], , + [AC_DEFINE([int8_t], [signed char], + [Define to `signed char' if int8_t not defined.])], + [AC_INCLUDES_DEFAULT +#ifdef HAVE_SYS_BITYPES_H +#include +#endif]) +AC_CHECK_TYPE([u_int8_t], , + [AC_DEFINE([u_int8_t], [unsigned char], + [Define to `unsigned char' if u_int8_t not defined.])], + [AC_INCLUDES_DEFAULT +#ifdef HAVE_SYS_BITYPES_H +#include +#endif]) +AC_CHECK_TYPE([int16_t], , + [AC_DEFINE([int16_t], [short], + [Define to `short' if int16_t not defined.])] + [AC_INCLUDES_DEFAULT +#ifdef HAVE_SYS_BITYPES_H +#include +#endif]) +AC_CHECK_TYPE([u_int16_t], , + [AC_DEFINE([u_int16_t], [unsigned short], + [Define to `unsigned short' if u_int16_t not defined.])], + [AC_INCLUDES_DEFAULT +#ifdef HAVE_SYS_BITYPES_H +#include +#endif]) +AC_CHECK_TYPE([int32_t], , + [AC_DEFINE([int32_t], [int], + [Define to `int' if int32_t not defined.])], + [AC_INCLUDES_DEFAULT +#ifdef HAVE_SYS_BITYPES_H +#include +#endif]) +AC_CHECK_TYPE([u_int32_t], , + [AC_DEFINE([u_int32_t], [unsigned int], + [Define to `unsigned int' if u_int32_t not defined.])], + [AC_INCLUDES_DEFAULT +#ifdef HAVE_SYS_BITYPES_H +#include +#endif]) +AC_CHECK_TYPE([int64_t], , + [AC_DEFINE([int64_t], [long long], + [Define to `long long' if int64_t not defined.])], + [AC_INCLUDES_DEFAULT +#ifdef HAVE_SYS_BITYPES_H +#include +#endif]) +AC_CHECK_TYPE([u_int64_t], , + [AC_DEFINE([u_int64_t], [unsigned long long], + [Define to `unsigned long long' if u_int64_t not defined.])], + [AC_INCLUDES_DEFAULT +#ifdef HAVE_SYS_BITYPES_H +#include +#endif]) + +# +# Try to arrange for large file support. +# +AC_SYS_LARGEFILE +AC_FUNC_FSEEKO + +dnl +dnl Even if were, on all OSes that support BPF, fixed to +dnl include , and we were to drop support for older +dnl releases without that fix, so that pcap-bpf.c doesn't need to +dnl include , the test program in "AC_LBL_FIXINCLUDES" +dnl in "aclocal.m4" uses it, so we would still have to test for it +dnl and set "HAVE_SYS_IOCCOM_H" if we have it, otherwise +dnl "AC_LBL_FIXINCLUDES" wouldn't work on some platforms such as Solaris. +dnl +AC_CHECK_HEADERS(sys/ioccom.h sys/sockio.h limits.h paths.h) +AC_CHECK_HEADERS(linux/types.h) +AC_CHECK_HEADERS(linux/if_packet.h netpacket/packet.h netpacket/if_packet.h) +AC_CHECK_HEADERS(net/pfvar.h, , , [#include +#include +#include ]) +if test "$ac_cv_header_net_pfvar_h" = yes; then + # + # Check for various PF actions. + # + AC_MSG_CHECKING(whether net/pfvar.h defines PF_NAT through PF_NORDR) + AC_TRY_COMPILE( + [#include + #include + #include + #include ], + [return PF_NAT+PF_NONAT+PF_BINAT+PF_NOBINAT+PF_RDR+PF_NORDR;], + [ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_PF_NAT_THROUGH_PF_NORDR, 1, + [define if net/pfvar.h defines PF_NAT through PF_NORDR]) + ], + AC_MSG_RESULT(no)) +fi +AC_CHECK_HEADERS(netinet/if_ether.h, , , [#include +#include ]) +if test "$ac_cv_header_netinet_if_ether_h" != yes; then + # + # The simple test didn't work. + # Do we need to include first? + # Unset ac_cv_header_netinet_if_ether_h so we don't + # treat the previous failure as a cached value and + # suppress the next test. + # + AC_MSG_NOTICE([Rechecking with some additional includes]) + unset ac_cv_header_netinet_if_ether_h + AC_CHECK_HEADERS(netinet/if_ether.h, , , [#include +#include +#include +struct mbuf; +struct rtentry; +#include ]) +fi + +AC_LBL_FIXINCLUDES + +AC_CHECK_FUNCS(strerror strlcpy) + +needsnprintf=no +AC_CHECK_FUNCS(vsnprintf snprintf,, + [needsnprintf=yes]) +if test $needsnprintf = yes; then + AC_LIBOBJ([snprintf]) +fi + +# +# Do this before checking for ether_hostton(), as it's a +# "gethostbyname() -ish function". +# +AC_LBL_LIBRARY_NET + +# +# You are in a twisty little maze of UN*Xes, all different. +# Some might not have ether_hostton(). +# Some might have it, but not declare it in any header file. +# Some might have it, but declare it in . +# Some might have it, but declare it in +# (And some might have it but document it as something declared in +# , although appears to work.) +# +# Before you is a C compiler. +# +AC_CHECK_FUNCS(ether_hostton) +if test "$ac_cv_func_ether_hostton" = yes; then + # + # OK, we have ether_hostton(). Do we have ? + # + if test "$ac_cv_header_netinet_if_ether_h" = yes; then + # + # Yes. Does it declare ether_hostton()? + # + AC_CHECK_DECL(ether_hostton, + [ + AC_DEFINE(NETINET_IF_ETHER_H_DECLARES_ETHER_HOSTTON,, + [Define to 1 if netinet/if_ether.h declares `ether_hostton']) + ],, + [ +#include +#include +#include +#include +struct mbuf; +struct rtentry; +#include +#include + ]) + fi + # + # Did that succeed? + # + if test "$ac_cv_have_decl_ether_hostton" != yes; then + # + # No, how about , as on Linux? + # + AC_CHECK_HEADERS(netinet/ether.h) + if test "$ac_cv_header_netinet_ether_h" = yes; then + # + # We have it - does it declare ether_hostton()? + # Unset ac_cv_have_decl_ether_hostton so we don't + # treat the previous failure as a cached value and + # suppress the next test. + # + unset ac_cv_have_decl_ether_hostton + AC_CHECK_DECL(ether_hostton, + [ + AC_DEFINE(NETINET_ETHER_H_DECLARES_ETHER_HOSTTON,, + [Define to 1 if netinet/ether.h declares `ether_hostton']) + ],, + [ +#include + ]) + fi + fi + # + # Is ether_hostton() declared? + # + if test "$ac_cv_have_decl_ether_hostton" != yes; then + # + # No, we'll have to declare it ourselves. + # Do we have "struct ether_addr"? + # + AC_CHECK_TYPES(struct ether_addr,,, + [ +#include +#include +#include +#include +struct mbuf; +struct rtentry; +#include +#include + ]) + AC_DEFINE(HAVE_DECL_ETHER_HOSTTON, 0, + [Define to 1 if you have the declaration of `ether_hostton', and to 0 if you +don't.]) + else + AC_DEFINE(HAVE_DECL_ETHER_HOSTTON, 1, + [Define to 1 if you have the declaration of `ether_hostton', and to 0 if you +don't.]) + fi +fi + +dnl to pacify those who hate protochain insn +AC_MSG_CHECKING(if --disable-protochain option is specified) +AC_ARG_ENABLE(protochain, +AC_HELP_STRING([--disable-protochain],[disable \"protochain\" insn])) +case "x$enable_protochain" in +xyes) enable_protochain=enabled ;; +xno) enable_protochain=disabled ;; +x) enable_protochain=enabled ;; +esac + +if test "$enable_protochain" = "disabled"; then + AC_DEFINE(NO_PROTOCHAIN,1,[do not use protochain]) +fi +AC_MSG_RESULT(${enable_protochain}) + +# +# SITA support is mutually exclusive with native capture support; +# "--with-sita" selects SITA support. +# +AC_ARG_WITH(sita, +AC_HELP_STRING([--with-sita],[include SITA support]), +[ + if test ! "x$withval" = "xno" ; then + AC_DEFINE(SITA,1,[include ACN support]) + AC_MSG_NOTICE(Enabling SITA ACN support) + V_PCAP=sita + V_FINDALLDEVS=sita + fi +], +[ +dnl +dnl Not all versions of test support -c (character special) but it's a +dnl better way of testing since the device might be protected. So we +dnl check in our normal order using -r and then check the for the /dev +dnl guys again using -c. +dnl +dnl XXX This could be done for cross-compiling, but for now it's not. +dnl +if test -z "$with_pcap" && test "$cross_compiling" = yes; then + AC_MSG_ERROR(pcap type not determined when cross-compiling; use --with-pcap=...) +fi +AC_ARG_WITH(pcap, +AC_HELP_STRING([--with-pcap=TYPE],[use packet capture TYPE])) +AC_MSG_CHECKING(packet capture type) +if test ! -z "$with_pcap" ; then + V_PCAP="$withval" +elif test -r /dev/bpf -o -h /dev/bpf ; then + # + # Cloning BPF device. + # + V_PCAP=bpf + AC_DEFINE(HAVE_CLONING_BPF,1,[define if you have a cloning BPF device]) +elif test -r /dev/bpf0 ; then + V_PCAP=bpf +elif test -r /usr/include/net/pfilt.h ; then + V_PCAP=pf +elif test -r /dev/enet ; then + V_PCAP=enet +elif test -r /dev/nit ; then + V_PCAP=snit +elif test -r /usr/include/sys/net/nit.h ; then + V_PCAP=nit +elif test -r /usr/include/linux/socket.h ; then + V_PCAP=linux +elif test -r /usr/include/net/raw.h ; then + V_PCAP=snoop +elif test -r /usr/include/odmi.h ; then + # + # On AIX, the BPF devices might not yet be present - they're + # created the first time libpcap runs after booting. + # We check for odmi.h instead. + # + V_PCAP=bpf +elif test -c /dev/bpf0 ; then # check again in case not readable + V_PCAP=bpf +elif test -r /usr/include/sys/dlpi.h ; then + V_PCAP=dlpi +elif test -c /dev/enet ; then # check again in case not readable + V_PCAP=enet +elif test -c /dev/nit ; then # check again in case not readable + V_PCAP=snit +else + V_PCAP=null +fi +AC_MSG_RESULT($V_PCAP) + +# +# Do capture-mechanism-dependent tests. +# +case "$V_PCAP" in +dlpi) + # + # Checks to see if Solaris has the public libdlpi(3LIB) library. + # Note: The existence of /usr/include/libdlpi.h does not mean it is the + # public libdlpi(3LIB) version. Before libdlpi was made public, a + # private version also existed, which did not have the same APIs. + # Due to a gcc bug, the default search path for 32-bit libraries does + # not include /lib, we add it explicitly here. + # [http://bugs.opensolaris.org/view_bug.do?bug_id=6619485]. + # Also, due to the bug above applications that link to libpcap with + # libdlpi will have to add "-L/lib" option to "configure". + # + saved_ldflags=$LDFLAGS + LDFLAGS="$LIBS -L/lib" + AC_CHECK_LIB(dlpi, dlpi_walk, + LIBS="-ldlpi $LIBS" + V_PCAP=libdlpi + AC_DEFINE(HAVE_LIBDLPI,1,[if libdlpi exists]), + V_PCAP=dlpi) + LDFLAGS=$saved_ldflags + + # + # Checks whether is usable, to catch weird SCO + # versions of DLPI. + # + AC_MSG_CHECKING(whether is usable) + AC_CACHE_VAL(ac_cv_sys_dlpi_usable, + AC_TRY_COMPILE( + [ + #include + #include + #include + ], + [int i = DL_PROMISC_PHYS;], + ac_cv_sys_dlpi_usable=yes, + ac_cv_sys_dlpi_usable=no)) + AC_MSG_RESULT($ac_cv_sys_dlpi_usable) + if test $ac_cv_sys_dlpi_usable = no ; then + AC_MSG_ERROR( is not usable on this system; it probably has a non-standard DLPI) + fi + + # + # Check whether we have a /dev/dlpi device or have multiple devices. + # + AC_MSG_CHECKING(for /dev/dlpi device) + if test -c /dev/dlpi ; then + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_DEV_DLPI, 1, [define if you have a /dev/dlpi]) + else + AC_MSG_RESULT(no) + dir="/dev/dlpi" + AC_MSG_CHECKING(for $dir directory) + if test -d $dir ; then + AC_MSG_RESULT(yes) + AC_DEFINE_UNQUOTED(PCAP_DEV_PREFIX, "$dir", [/dev/dlpi directory]) + else + AC_MSG_RESULT(no) + fi + fi + + # + # This check is for Solaris with DLPI support for passive modes. + # See dlpi(7P) for more details. + # + AC_LBL_DL_PASSIVE_REQ_T + ;; + +linux) + # + # Do we have the wireless extensions? + # + AC_CHECK_HEADERS(linux/wireless.h, [], [], + [ +#include +#include +#include + ]) + + # + # Do we have libnl? + # + AC_ARG_WITH(libnl, + AC_HELP_STRING([--without-libnl],[disable libnl support @<:@default=yes, on Linux, if present@:>@]), + with_libnl=$withval,,) + + if test x$with_libnl != xno ; then + # + # Try libnl 2.x first. + # + AC_CHECK_LIB(nl, nl_socket_alloc, + [ + # + # Yes, we have libnl 2.x. + # + LIBS="-lnl-genl -lnl $LIBS" + AC_DEFINE(HAVE_LIBNL,1,[if libnl exists]) + AC_DEFINE(HAVE_LIBNL_2_x,1,[if libnl exists and is version 2.x]) + ], + [ + # + # No, we don't; do we have libnl 1.x? + # + AC_CHECK_LIB(nl, nl_handle_alloc, + [ + # + # Yes. + # + LIBS="-lnl $LIBS" + AC_DEFINE(HAVE_LIBNL,1,[if libnl exists]) + ], + [ + # + # No, we don't have libnl at all. + # + if test x$with_libnl = xyes ; then + AC_MSG_ERROR([libnl support requested but libnl not found]) + fi + ]) + ]) + fi + + AC_CHECK_HEADERS(linux/ethtool.h,,, + [ +AC_INCLUDES_DEFAULT +#include + ]) + AC_LBL_TPACKET_STATS + AC_LBL_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI + ;; + +bpf) + # + # Check whether we have the *BSD-style ioctls. + # + AC_CHECK_HEADERS(net/if_media.h) + + AC_MSG_CHECKING(whether the system supports zerocopy BPF) + AC_TRY_COMPILE( + [#include + #include + #include + #include ], + [return (BIOCROTZBUF + BPF_BUFMODE_ZBUF);], + [ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_ZEROCOPY_BPF, 1, + [define if the system supports zerocopy BPF]) + ], + AC_MSG_RESULT(no)) + + # + # Check whether we have struct BPF_TIMEVAL. + # + AC_CHECK_TYPES(struct BPF_TIMEVAL,,, + [ +#include +#include +#ifdef HAVE_SYS_IOCCOM_H +#include +#endif +#include + ]) + ;; + +dag) + V_DEFS="$V_DEFS -DDAG_ONLY" + ;; + +septel) + V_DEFS="$V_DEFS -DSEPTEL_ONLY" + ;; + +snf) + V_DEFS="$V_DEFS -DSNF_ONLY" + ;; + +null) + AC_MSG_WARN(cannot determine packet capture interface) + AC_MSG_WARN((see the INSTALL doc for more info)) + ;; +esac + +dnl +dnl Now figure out how we get a list of interfaces and addresses, +dnl if we support capturing. Don't bother if we don't support +dnl capturing. +dnl +if test "$V_PCAP" = null +then + # + # We can't capture, so we can't open any capture + # devices, so we won't return any interfaces. + # + V_FINDALLDEVS=null +else + AC_CHECK_FUNC(getifaddrs,[ + # + # We have "getifaddrs()"; make sure we have + # as well, just in case some platform is really weird. + # + AC_CHECK_HEADER(ifaddrs.h,[ + # + # We have the header, so we use "getifaddrs()" to + # get the list of interfaces. + # + V_FINDALLDEVS=getad + ],[ + # + # We don't have the header - give up. + # XXX - we could also fall back on some other + # mechanism, but, for now, this'll catch this + # problem so that we can at least try to figure + # out something to do on systems with "getifaddrs()" + # but without "ifaddrs.h", if there is something + # we can do on those systems. + # + AC_MSG_ERROR([Your system has getifaddrs() but doesn't have a usable .]) + ]) + ],[ + # + # Well, we don't have "getifaddrs()", so we have to use + # some other mechanism; determine what that mechanism is. + # + # The first thing we use is the type of capture mechanism, + # which is somewhat of a proxy for the OS we're using. + # + case "$V_PCAP" in + + dlpi|libdlpi) + AC_CHECK_HEADERS(sys/bufmod.h sys/dlpi_ext.h) + # + # This might be Solaris 8 or later, with + # SIOCGLIFCONF, or it might be some other OS + # or some older version of Solaris, with + # just SIOCGIFCONF. + # + AC_MSG_CHECKING(whether we have SIOCGLIFCONF) + AC_CACHE_VAL(ac_cv_lbl_have_siocglifconf, + AC_TRY_COMPILE( + [#include + #include + #include + #include + #include ], + [ioctl(0, SIOCGLIFCONF, (char *)0);], + ac_cv_lbl_have_siocglifconf=yes, + ac_cv_lbl_have_siocglifconf=no)) + AC_MSG_RESULT($ac_cv_lbl_have_siocglifconf) + if test $ac_cv_lbl_have_siocglifconf = yes ; then + V_FINDALLDEVS=glifc + else + V_FINDALLDEVS=gifc + fi + # + # Needed for common functions used by pcap-[dlpi,libdlpi].c + # + SSRC="dlpisubs.c" + ;; + + *) + # + # Assume we just have SIOCGIFCONF. + # (XXX - on at least later Linux kernels, there's + # another mechanism, and we should be using that + # instead.) + # + V_FINDALLDEVS=gifc + ;; + esac]) +fi +]) + +AC_MSG_CHECKING(for socklen_t) +AC_TRY_COMPILE([ + #include + #include + ], + [ socklen_t x; ], + have_socklen_t=yes, + have_socklen_t=no) +if test "x$have_socklen_t" = "xyes"; then + AC_DEFINE(HAVE_SOCKLEN_T, 1, [define if socklen_t is defined]) +fi +AC_MSG_RESULT($have_socklen_t) + +AC_ARG_ENABLE(ipv6, +AC_HELP_STRING([--enable-ipv6],[build IPv6-capable version @<:@default=yes, if getaddrinfo available@:>@]), + [], + [enable_ipv6=ifavailable]) +if test "$enable_ipv6" != "no"; then + AC_CHECK_FUNC(getaddrinfo, + [ + AC_DEFINE(INET6,1,[IPv6]) + ], + [ + if test "$enable_ipv6" != "ifavailable"; then + AC_MSG_FAILURE([--enable-ipv6 was given, but getaddrinfo isn't available]) + fi + ]) +fi + +AC_MSG_CHECKING(whether to build optimizer debugging code) +AC_ARG_ENABLE(optimizer-dbg, +AC_HELP_STRING([--enable-optimizer-dbg],[build optimizer debugging code])) +if test "$enable_optimizer_dbg" = "yes"; then + AC_DEFINE(BDEBUG,1,[Enable optimizer debugging]) +fi +AC_MSG_RESULT(${enable_optimizer_dbg-no}) + +AC_MSG_CHECKING(whether to build parser debugging code) +AC_ARG_ENABLE(yydebug, +AC_HELP_STRING([--enable-yydebug],[build parser debugging code])) +if test "$enable_yydebug" = "yes"; then + AC_DEFINE(YYDEBUG,1,[Enable parser debugging]) +fi +AC_MSG_RESULT(${enable_yydebug-no}) + +# Check for Endace DAG card support. +AC_ARG_WITH([dag], +AC_HELP_STRING([--with-dag@<:@=DIR@:>@],[include Endace DAG support @<:@"yes", "no" or DIR; default="yes" on BSD and Linux if present@:>@]), +[ + if test "$withval" = no + then + # User doesn't want DAG support. + want_dag=no + elif test "$withval" = yes + then + # User wants DAG support but hasn't specified a directory. + want_dag=yes + else + # User wants DAG support and has specified a directory, so use the provided value. + want_dag=yes + dag_root=$withval + fi +],[ + # + # Use DAG API if present, otherwise don't + # + want_dag=ifpresent +]) + +AC_ARG_WITH([dag-includes], +AC_HELP_STRING([--with-dag-includes=DIR],[Endace DAG include directory]), +[ + # User wants DAG support and has specified a header directory, so use the provided value. + want_dag=yes + dag_include_dir=$withval +],[]) + +AC_ARG_WITH([dag-libraries], +AC_HELP_STRING([--with-dag-libraries=DIR],[Endace DAG library directory]), +[ + # User wants DAG support and has specified a library directory, so use the provided value. + want_dag=yes + dag_lib_dir=$withval +],[]) + +case "$V_PCAP" in +linux|bpf|dag) + # + # We support the DAG API if we're on Linux or BSD, or if we're + # building a DAG-only libpcap. + # + ;; +*) + # + # If the user explicitly requested DAG, tell them it's not + # supported. + # + # If they expressed no preference, don't include it. + # + if test $want_dag = yes; then + AC_MSG_ERROR([DAG support is only available with 'linux' 'bpf' and 'dag' packet capture types]) + elif test $want_dag = yes; then + want_dag=no + fi + ;; +esac + +ac_cv_lbl_dag_api=no +if test "$want_dag" != no; then + + AC_MSG_CHECKING([whether we have DAG API headers]) + + # If necessary, set default paths for DAG API headers and libraries. + if test -z "$dag_root"; then + dag_root=/usr/local + fi + + if test -z "$dag_include_dir"; then + dag_include_dir="$dag_root/include" + fi + + if test -z "$dag_lib_dir"; then + dag_lib_dir="$dag_root/lib" + fi + + if test -z "$dag_tools_dir"; then + dag_tools_dir="$dag_root/tools" + fi + + if test -r $dag_include_dir/dagapi.h; then + ac_cv_lbl_dag_api=yes + fi + AC_MSG_RESULT([$ac_cv_lbl_dag_api ($dag_include_dir)]) +fi + +if test $ac_cv_lbl_dag_api = yes; then + V_INCLS="$V_INCLS -I$dag_include_dir" + + if test $V_PCAP != dag ; then + SSRC="pcap-dag.c" + fi + + # See if we can find a general version string. + # Don't need to save and restore LIBS to prevent -ldag being + # included if there's a found-action (arg 3). + saved_ldflags=$LDFLAGS + LDFLAGS="-L$dag_lib_dir" + AC_CHECK_LIB([dag], [dag_attach_stream], [dag_streams="1"], [dag_streams="0"]) + AC_CHECK_LIB([dag],[dag_get_erf_types], [ + AC_DEFINE(HAVE_DAG_GET_ERF_TYPES, 1, [define if you have dag_get_erf_types()])]) + AC_CHECK_LIB([dag],[dag_get_stream_erf_types], [ + AC_DEFINE(HAVE_DAG_GET_STREAM_ERF_TYPES, 1, [define if you have dag_get_stream_erf_types()])]) + + LDFLAGS=$saved_ldflags + + if test "$dag_streams" = 1; then + AC_DEFINE(HAVE_DAG_STREAMS_API, 1, [define if you have streams capable DAG API]) + LIBS="$LIBS -ldag" + LDFLAGS="$LDFLAGS -L$dag_lib_dir" + + AC_CHECK_LIB([vdag],[vdag_set_device_info], [ac_dag_have_vdag="1"], [ac_dag_have_vdag="0"]) + if test "$ac_dag_have_vdag" = 1; then + AC_DEFINE(HAVE_DAG_VDAG, 1, [define if you have vdag_set_device_info()]) + LIBS="$LIBS -lpthread" + fi + fi + + AC_DEFINE(HAVE_DAG_API, 1, [define if you have the DAG API]) +fi + +AC_MSG_CHECKING(whether we have the DAG API) + +if test $ac_cv_lbl_dag_api = no; then + AC_MSG_RESULT(no) + if test "$want_dag" = yes; then + # User wanted DAG support but we couldn't find it. + AC_MSG_ERROR([DAG API requested, but not found at $dag_root: use --without-dag]) + fi + + if test "$V_PCAP" = dag; then + # User requested "dag" capture type but the DAG API wasn't + # found. + AC_MSG_ERROR([Specifying the capture type as "dag" requires the DAG API to be present; use the --with-dag options to specify the location. (Try "./configure --help" for more information.)]) + fi +else + AC_MSG_RESULT(yes) +fi + +AC_ARG_WITH(septel, +AC_HELP_STRING([--with-septel@<:@=DIR@:>@],[include Septel support (located in directory DIR, if supplied). @<:@default=yes, on Linux, if present@:>@]), +[ + if test "$withval" = no + then + want_septel=no + elif test "$withval" = yes + then + want_septel=yes + septel_root= + else + want_septel=yes + septel_root=$withval + fi +],[ + # + # Use Septel API if present, otherwise don't + # + want_septel=ifpresent + septel_root=./../septel +]) +ac_cv_lbl_septel_api=no +case "$V_PCAP" in +linux|septel) + # + # We support the Septel API if we're on Linux, or if we're building + # a Septel-only libpcap. + # + ;; +*) + # + # If the user explicitly requested Septel, tell them it's not + # supported. + # + # If they expressed no preference, don't include it. + # + if test $want_septel = yes; then + AC_MSG_ERROR(Septel support only available with 'linux' and 'septel' packet capture types) + elif test $want_septel = yes; then + want_septel=no + fi + ;; +esac + +if test "$with_septel" != no; then + AC_MSG_CHECKING(whether we have Septel API) + + if test -z "$septel_root"; then + septel_root=$srcdir/../septel + fi + + septel_tools_dir="$septel_root" + septel_include_dir="$septel_root/INC" + + ac_cv_lbl_septel_api=no + if test -r "$septel_include_dir/msg.h"; then + V_INCLS="$V_INCLS -I$septel_include_dir" + ADDLOBJS="$ADDLOBJS $septel_tools_dir/asciibin.o $septel_tools_dir/bit2byte.o $septel_tools_dir/confirm.o $septel_tools_dir/fmtmsg.o $septel_tools_dir/gct_unix.o $septel_tools_dir/hqueue.o $septel_tools_dir/ident.o $septel_tools_dir/mem.o $septel_tools_dir/pack.o $septel_tools_dir/parse.o $septel_tools_dir/pool.o $septel_tools_dir/sdlsig.o $septel_tools_dir/strtonum.o $septel_tools_dir/timer.o $septel_tools_dir/trace.o" + ADDLARCHIVEOBJS="$ADDLARCHIVEOBJS $septel_tools_dir/asciibin.o $septel_tools_dir/bit2byte.o $septel_tools_dir/confirm.o $septel_tools_dir/fmtmsg.o $septel_tools_dir/gct_unix.o $septel_tools_dir/hqueue.o $septel_tools_dir/ident.o $septel_tools_dir/mem.o $septel_tools_dir/pack.o $septel_tools_dir/parse.o $septel_tools_dir/pool.o $septel_tools_dir/sdlsig.o $septel_tools_dir/strtonum.o $septel_tools_dir/timer.o $septel_tools_dir/trace.o" + + if test "$V_PCAP" != septel ; then + SSRC="pcap-septel.c" + fi + ac_cv_lbl_septel_api=yes + fi + + AC_MSG_RESULT($ac_cv_lbl_septel_api) + if test $ac_cv_lbl_septel_api = no; then + if test "$want_septel" = yes; then + AC_MSG_ERROR(Septel API not found under directory $septel_root; use --without-septel) + fi + else + AC_DEFINE(HAVE_SEPTEL_API, 1, [define if you have a Septel API]) + fi +fi + +if test "$V_PCAP" = septel -a "$ac_cv_lbl_septel_api" = no; then + AC_MSG_ERROR(Specifying the capture type as 'septel' requires the Septel API to be present; use --with-septel=DIR) +fi + +# Check for Myricom SNF support. +AC_ARG_WITH([snf], +AC_HELP_STRING([--with-snf@<:@=DIR@:>@],[include Myricom SNF support @<:@"yes", "no" or DIR; default="yes" on BSD and Linux if present@:>@]), +[ + if test "$withval" = no + then + # User explicitly doesn't want SNF + want_snf=no + elif test "$withval" = yes + then + # User wants SNF support but hasn't specific a directory. + want_snf=yes + else + # User wants SNF support with a specified directory. + want_snf=yes + snf_root=$withval + fi +],[ + # + # Use Sniffer API if present, otherwise don't + # + want_snf=ifpresent +]) + +AC_ARG_WITH([snf-includes], +AC_HELP_STRING([--with-snf-includes=DIR],[Myricom SNF include directory]), +[ + # User wants SNF with specific header directory + want_snf=yes + snf_include_dir=$withval +],[]) + +AC_ARG_WITH([snf-libraries], +AC_HELP_STRING([--with-snf-libraries=DIR],[Myricom SNF library directory]), +[ + # User wants SNF with specific lib directory + want_snf=yes + snf_lib_dir=$withval +],[]) + +case "$V_PCAP" in +bpf|linux|snf) + # + # We support the Sniffer API if we're on BSD, Linux, or if we're + # building a Sniffer-only libpcap. + # + ;; +*) + # + # If the user explicitly requested Sniffer, tell them it's not + # supported. + # + # If they expressed no preference, don't include it. + # + if test $want_snf = yes; then + AC_MSG_ERROR(Myricom SNF support only available with 'bpf' 'linux' and 'snf' packet capture types) + elif test $want_snf = yes; then + want_snf=no + fi + ;; +esac + +ac_cv_lbl_snf_api=no +if test "$with_snf" != no; then + + AC_MSG_CHECKING(whether we have Myricom Sniffer API) + + if test -z "$snf_root"; then + snf_root=/opt/snf + fi + + if test -z "$snf_include_dir"; then + snf_include_dir="$snf_root/include" + fi + + if test -z "$snf_lib_dir"; then + snf_lib_dir="$snf_root/lib" + fi + + if test -f "$snf_include_dir/snf.h"; then + ac_cv_lbl_snf_api=yes + fi + AC_MSG_RESULT([$ac_cv_lbl_snf_api ($snf_root)]) + + if test $ac_cv_lbl_snf_api = no; then + if test "$want_snf" = yes; then + AC_MSG_ERROR(SNF API headers not found under $snf_include_dir; use --without-snf) + fi + else + saved_ldflags=$LDFLAGS + LDFLAGS="$LDFLAGS -L$snf_lib_dir" + AC_CHECK_LIB([snf], [snf_init], [ac_cv_lbl_snf_api="yes"], [ac_cv_lbl_snf_api="no"]) + LDFLAGS="$saved_ldflags" + + if test $ac_cv_lbl_snf_api = no; then + if test "$want_snf" = yes; then + AC_MSG_ERROR(SNF API cannot correctly be linked check config.log; use --without-snf) + fi + else + V_INCLS="$V_INCLS -I$snf_include_dir" + LIBS="$LIBS -lsnf" + LDFLAGS="$LDFLAGS -L$snf_lib_dir" + if test "$V_PCAP" != snf ; then + SSRC="pcap-snf.c" + fi + AC_DEFINE(HAVE_SNF_API, 1, [define if you have Myricom SNF API]) + fi + fi +fi + +if test "$V_PCAP" = snf -a "$ac_cv_lbl_snf_api" = no; then + AC_MSG_ERROR(Specifying the capture type as 'snf' requires the Myricom Sniffer API to be present; use --with-snf=DIR) +fi + +AC_LBL_LEX_AND_YACC(V_LEX, V_YACC, pcap_) +if test "$V_LEX" = lex ; then +# Some versions of lex can't handle the definitions section of scanner.l . +# Try lexing it and complain if it can't deal. + AC_CACHE_CHECK([for capable lex], tcpdump_cv_capable_lex, + if lex -t scanner.l > /dev/null 2>&1; then + tcpdump_cv_capable_lex=yes + else + tcpdump_cv_capable_lex=insufficient + fi) + if test $tcpdump_cv_capable_lex = insufficient ; then + AC_MSG_ERROR([Your operating system's lex is insufficient to compile + libpcap. flex is a lex replacement that has many advantages, including + being able to compile libpcap. For more information, see + http://www.gnu.org/software/flex/flex.html .]) + fi +fi + +# +# Assume, by default, no support for shared libraries and V7/BSD convention +# for man pages (file formats in section 5, miscellaneous info in section 7). +# Individual cases can override this. +# +DYEXT="none" +MAN_FILE_FORMATS=5 +MAN_MISC_INFO=7 +case "$host_os" in + +aix*) + dnl Workaround to enable certain features + AC_DEFINE(_SUN,1,[define on AIX to get certain functions]) + + # + # AIX makes it fun to build shared and static libraries, + # because they're *both* ".a" archive libraries. We + # build the static library for the benefit of the traditional + # scheme of building libpcap and tcpdump in subdirectories of + # the same directory, with tcpdump statically linked with the + # libpcap in question, but we also build a shared library as + # "libpcap.shareda" and install *it*, rather than the static + # library, as "libpcap.a". + # + DYEXT="shareda" + + case "$V_PCAP" in + + dlpi) + # + # If we're using DLPI, applications will need to + # use /lib/pse.exp if present, as we use the + # STREAMS routines. + # + pseexe="/lib/pse.exp" + AC_MSG_CHECKING(for $pseexe) + if test -f $pseexe ; then + AC_MSG_RESULT(yes) + LIBS="-I:$pseexe" + fi + ;; + + bpf) + # + # If we're using BPF, we need "-lodm" and "-lcfg", as + # we use them to load the BPF module. + # + LIBS="-lodm -lcfg" + ;; + esac + ;; + +darwin*) + DYEXT="dylib" + V_CCOPT="$V_CCOPT -fno-common" + AC_ARG_ENABLE(universal, + AC_HELP_STRING([--disable-universal],[don't build universal on OS X])) + if test "$enable_universal" != "no"; then + case "$host_os" in + + darwin9.*) + # + # Leopard. Build for 32-bit PowerPC, 64-bit + # PowerPC, x86, and x86-64, with 32-bit PowerPC + # first. (That's what Apple does.) + # + V_CCOPT="$V_CCOPT -arch ppc -arch ppc64 -arch i386 -arch x86_64" + LDFLAGS="$LDFLAGS -arch ppc -arch ppc64 -arch i386 -arch x86_64" + ;; + + darwin10.*) + # + # Snow Leopard. Build for x86-64, x86, and + # 32-bit PowerPC, with x86-64 first. (That's + # what Apple does, even though Snow Leopard + # doesn't run on PPC, so PPC libpcap runs under + # Rosetta, and Rosetta doesn't support BPF + # ioctls, so PPC programs can't do live + # captures.) + # + V_CCOPT="$V_CCOPT -arch x86_64 -arch i386 -arch ppc" + LDFLAGS="$LDFLAGS -arch x86_64 -arch i386 -arch ppc" + ;; + + darwin11.*) + # + # Lion. Build for x86-64 and x86, with x86-64 + # first. (That's probably what Apple does, + # given that Rosetta is gone.) + # + V_CCOPT="$V_CCOPT -arch x86_64 -arch i386" + LDFLAGS="$LDFLAGS -arch x86_64 -arch i386" + ;; + esac + fi + ;; + +hpux9*) + AC_DEFINE(HAVE_HPUX9,1,[on HP-UX 9.x]) + + # + # Use System V conventions for man pages. + # + MAN_FILE_FORMATS=4 + MAN_MISC_INFO=5 + ;; + +hpux10.0*) + + # + # Use System V conventions for man pages. + # + MAN_FILE_FORMATS=4 + MAN_MISC_INFO=5 + ;; + +hpux10.1*) + + # + # Use System V conventions for man pages. + # + MAN_FILE_FORMATS=4 + MAN_MISC_INFO=5 + ;; + +hpux*) + dnl HPUX 10.20 and above is similar to HPUX 9, but + dnl not the same.... + dnl + dnl XXX - DYEXT should be set to "sl" if this is building + dnl for 32-bit PA-RISC, but should be left as "so" for + dnl 64-bit PA-RISC or, I suspect, IA-64. + AC_DEFINE(HAVE_HPUX10_20_OR_LATER,1,[on HP-UX 10.20 or later]) + if test "`uname -m`" = "ia64"; then + DYEXT="so" + else + DYEXT="sl" + fi + + # + # "-b" builds a shared library; "+h" sets the soname. + # + SHLIB_OPT="-b" + SONAME_OPT="+h" + + # + # Use System V conventions for man pages. + # + MAN_FILE_FORMATS=4 + MAN_MISC_INFO=5 + ;; + +irix*) + # + # Use System V conventions for man pages. + # + MAN_FILE_FORMATS=4 + MAN_MISC_INFO=5 + ;; + +linux*|freebsd*|netbsd*|openbsd*|dragonfly*|kfreebsd*|gnu*) + DYEXT="so" + + # + # Compiler assumed to be GCC; run-time linker may require a -R + # flag. + # + if test "$libdir" != "/usr/lib"; then + V_RFLAGS=-Wl,-R$libdir + fi + ;; + +osf*) + DYEXT="so" + + # + # Use System V conventions for man pages. + # + MAN_FILE_FORMATS=4 + MAN_MISC_INFO=5 + ;; + +sinix*) + AC_MSG_CHECKING(if SINIX compiler defines sinix) + AC_CACHE_VAL(ac_cv_cc_sinix_defined, + AC_TRY_COMPILE( + [], + [int i = sinix;], + ac_cv_cc_sinix_defined=yes, + ac_cv_cc_sinix_defined=no)) + AC_MSG_RESULT($ac_cv_cc_sinix_defined) + if test $ac_cv_cc_sinix_defined = no ; then + AC_DEFINE(sinix,1,[on sinix]) + fi + ;; + +solaris*) + AC_DEFINE(HAVE_SOLARIS,1,[On solaris]) + + DYEXT="so" + # + # Use System V conventions for man pages. + # + MAN_FILE_FORMATS=4 + MAN_MISC_INFO=5 + ;; +esac + +AC_ARG_ENABLE(shared, +AC_HELP_STRING([--enable-shared],[build shared libraries @<:@default=yes, if support available@:>@])) +test "x$enable_shared" = "xno" && DYEXT="none" + +AC_PROG_RANLIB +AC_CHECK_TOOL([AR], [ar]) + +AC_LBL_DEVEL(V_CCOPT) + +AC_LBL_SOCKADDR_SA_LEN + +AC_LBL_SOCKADDR_STORAGE + +AC_LBL_HP_PPA_INFO_T_DL_MODULE_ID_1 + +AC_LBL_UNALIGNED_ACCESS + +# +# Makefile.in includes rules to generate version.h, so we assume +# that it will be generated if autoconf is used. +# +AC_DEFINE(HAVE_VERSION_H, 1, [define if version.h is generated in the build procedure]) + +rm -f net +ln -s ${srcdir}/bpf/net net + +AC_SUBST(V_CCOPT) +AC_SUBST(V_DEFS) +AC_SUBST(V_FINDALLDEVS) +AC_SUBST(V_INCLS) +AC_SUBST(V_LEX) +AC_SUBST(V_PCAP) +AC_SUBST(V_SHLIB_CMD) +AC_SUBST(V_SHLIB_OPT) +AC_SUBST(V_SONAME_OPT) +AC_SUBST(V_RPATH_OPT) +AC_SUBST(V_YACC) +AC_SUBST(ADDLOBJS) +AC_SUBST(ADDLARCHIVEOBJS) +AC_SUBST(SSRC) +AC_SUBST(DYEXT) +AC_SUBST(MAN_FILE_FORMATS) +AC_SUBST(MAN_MISC_INFO) + +dnl check for USB sniffing support +AC_MSG_CHECKING(for USB sniffing support) +case "$host_os" in +linux*) + AC_DEFINE(PCAP_SUPPORT_USB, 1, [target host supports USB sniffing]) + USB_SRC=pcap-usb-linux.c + AC_MSG_RESULT(yes) + ac_usb_dev_name=`udevinfo -q name -p /sys/class/usb_device/usbmon 2>/dev/null` + if test $? -ne 0 ; then + ac_usb_dev_name="usbmon" + fi + AC_DEFINE_UNQUOTED(LINUX_USB_MON_DEV, "/dev/$ac_usb_dev_name", [path for device for USB sniffing]) + AC_MSG_NOTICE(Device for USB sniffing is /dev/$ac_usb_dev_name) + # + # Do we have a version of available? + # If so, we might need it for . + # + AC_CHECK_HEADERS(linux/compiler.h) + if test "$ac_cv_header_linux_compiler_h" = yes; then + # + # Yes - include it when testing for . + # + AC_CHECK_HEADERS(linux/usbdevice_fs.h,,,[#include ]) + else + AC_CHECK_HEADERS(linux/usbdevice_fs.h) + fi + if test "$ac_cv_header_linux_usbdevice_fs_h" = yes; then + # + # OK, does it define bRequestType? Older versions of the kernel + # define fields with names like "requesttype, "request", and + # "value", rather than "bRequestType", "bRequest", and + # "wValue". + # + AC_MSG_CHECKING(if usbdevfs_ctrltransfer struct has bRequestType member) + AC_CACHE_VAL(ac_cv_usbdevfs_ctrltransfer_has_bRequestType, + AC_TRY_COMPILE([ +AC_INCLUDES_DEFAULT +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +#ifdef HAVE_LINUX_COMPILER_H +#include +#endif +#include ], + [u_int i = sizeof(((struct usbdevfs_ctrltransfer *)0)->bRequestType)], + ac_cv_usbdevfs_ctrltransfer_has_bRequestType=yes, + ac_cv_usbdevfs_ctrltransfer_has_bRequestType=no)) + AC_MSG_RESULT($ac_cv_usbdevfs_ctrltransfer_has_bRequestType) + if test $ac_cv_usbdevfs_ctrltransfer_has_bRequestType = yes ; then + AC_DEFINE(HAVE_USBDEVFS_CTRLTRANSFER_BREQUESTTYPE,1, + [if struct usbdevfs_ctrltransfer has bRequestType]) + fi + fi + ;; +*) + AC_MSG_RESULT(no) + ;; +esac +AC_SUBST(PCAP_SUPPORT_USB) +AC_SUBST(USB_SRC) + +dnl check for netfilter sniffing support +AC_MSG_CHECKING(whether the platform could support netfilter sniffing) +case "$host_os" in +linux*) + AC_MSG_RESULT(yes) + # + # Life's too short to deal with trying to get this to compile + # if you don't get the right types defined with + # __KERNEL_STRICT_NAMES getting defined by some other include. + # + # Check whether the includes Just Work. If not, don't turn on + # netfilter support. + # + AC_MSG_CHECKING(whether we can compile the netfilter support) + AC_CACHE_VAL(ac_cv_netfilter_can_compile, + AC_TRY_COMPILE([ +AC_INCLUDES_DEFAULT +#include +#include + +#include +#include +#include ], + [], + ac_cv_netfilter_can_compile=yes, + ac_cv_netfilter_can_compile=no)) + AC_MSG_RESULT($ac_cv_netfilter_can_compile) + if test $ac_cv_netfilter_can_compile = yes ; then + AC_DEFINE(PCAP_SUPPORT_NETFILTER, 1, + [target host supports netfilter sniffing]) + NETFILTER_SRC=pcap-netfilter-linux.c + fi + ;; +*) + AC_MSG_RESULT(no) + ;; +esac +AC_SUBST(PCAP_SUPPORT_NETFILTER) +AC_SUBST(NETFILTER_SRC) + +AC_ARG_ENABLE([bluetooth], +[AC_HELP_STRING([--enable-bluetooth],[enable Bluetooth support @<:@default=yes, if support available@:>@])], +,enable_bluetooth=yes) + +if test "x$enable_bluetooth" != "xno" ; then + dnl check for Bluetooth sniffing support + case "$host_os" in + linux*) + AC_CHECK_HEADER(bluetooth/bluetooth.h, + [ + AC_DEFINE(PCAP_SUPPORT_BT, 1, [target host supports Bluetooth sniffing]) + BT_SRC=pcap-bt-linux.c + AC_MSG_NOTICE(Bluetooth sniffing is supported) + ], + AC_MSG_NOTICE(Bluetooth sniffing is not supported; install bluez-lib devel to enable it) + ) + ;; + *) + AC_MSG_NOTICE(no Bluetooth sniffing support implemented for $host_os) + ;; + esac + AC_SUBST(PCAP_SUPPORT_BT) + AC_SUBST(BT_SRC) +fi + +AC_ARG_ENABLE([canusb], +[AC_HELP_STRING([--enable-canusb],[enable canusb support @<:@default=yes, if support available@:>@])] +,enable_canusb=yes) + +if test "x$enable_canusb" != "xno" ; then + dnl check for canusb support + case "$host_os" in + linux*) + AC_CHECK_HEADER(libusb-1.0/libusb.h, + [ + AC_DEFINE(PCAP_SUPPORT_CANUSB, 1, [target host supports canusb]) + CANUSB_SRC=pcap-canusb-linux.c + LIBS="-lusb-1.0 $LIBS" + AC_MSG_NOTICE(canusb sniffing is supported) + ], + AC_MSG_NOTICE(canusb sniffing is not supported; install libusb1.0 lib devel to enable it) + ) + ;; + *) + AC_MSG_NOTICE(no canusb support implemented for $host_os) + ;; + esac + AC_SUBST(PCAP_SUPPORT_CANUSB) + AC_SUBST(CANUSB_SRC) +fi + +AC_ARG_ENABLE([can], +[AC_HELP_STRING([--enable-can],[enable CAN support @<:@default=yes, if support available@:>@])], +,enable_can=yes) + +if test "x$enable_can" != "xno" ; then + dnl check for CAN sniffing support + case "$host_os" in + linux*) + AC_CHECK_HEADER(linux/can.h, + [ AC_DEFINE(PCAP_SUPPORT_CAN, 1, [target host supports CAN sniffing]) + CAN_SRC=pcap-can-linux.c + AC_MSG_NOTICE(CAN sniffing is supported)], + AC_MSG_NOTICE(CAN sniffing is not supported), + [#include ] + ) + ;; + *) + AC_MSG_NOTICE(no CAN sniffing support implemented for $host_os) + ;; + esac + AC_SUBST(PCAP_SUPPORT_CAN) + AC_SUBST(CAN_SRC) +fi + +dnl check for hardware timestamp support +case "$host_os" in +linux*) + AC_CHECK_HEADERS([linux/net_tstamp.h]) + ;; +*) + AC_MSG_NOTICE(no hardware timestamp support implemented for $host_os) + ;; +esac + +AC_PROG_INSTALL + +AC_CONFIG_HEADER(config.h) + +AC_OUTPUT(Makefile pcap-filter.manmisc pcap-linktype.manmisc + pcap-tstamp.manmisc pcap-savefile.manfile pcap.3pcap + pcap_compile.3pcap pcap_datalink.3pcap pcap_dump_open.3pcap + pcap_list_datalinks.3pcap pcap_list_tstamp_types.3pcap + pcap_open_dead.3pcap pcap_open_offline.3pcap + pcap_set_tstamp_type.3pcap) + +if test -f .devel ; then + make depend +fi +exit 0 diff --git a/dlpisubs.c b/dlpisubs.c new file mode 100644 index 0000000..23c78ce --- /dev/null +++ b/dlpisubs.c @@ -0,0 +1,358 @@ +/* + * This code is derived from code formerly in pcap-dlpi.c, originally + * contributed by Atanu Ghosh (atanu@cs.ucl.ac.uk), University College + * London, and subsequently modified by Guy Harris (guy@alum.mit.edu), + * Mark Pizzolato , + * Mark C. Brown (mbrown@hp.com), and Sagun Shakya . + */ + +/* + * This file contains dlpi/libdlpi related common functions used + * by pcap-[dlpi,libdlpi].c. + */ +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/dlpisubs.c,v 1.3 2008-12-02 16:40:19 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifndef DL_IPATM +#define DL_IPATM 0x12 /* ATM Classical IP interface */ +#endif + +#ifdef HAVE_SYS_BUFMOD_H + /* + * Size of a bufmod chunk to pass upstream; that appears to be the + * biggest value to which you can set it, and setting it to that value + * (which is bigger than what appears to be the Solaris default of 8192) + * reduces the number of packet drops. + */ +#define CHUNKSIZE 65536 + + /* + * Size of the buffer to allocate for packet data we read; it must be + * large enough to hold a chunk. + */ +#define PKTBUFSIZE CHUNKSIZE + +#else /* HAVE_SYS_BUFMOD_H */ + + /* + * Size of the buffer to allocate for packet data we read; this is + * what the value used to be - there's no particular reason why it + * should be tied to MAXDLBUF, but we'll leave it as this for now. + */ +#define MAXDLBUF 8192 +#define PKTBUFSIZE (MAXDLBUF * sizeof(bpf_u_int32)) + +#endif + +#include +#include +#ifdef HAVE_SYS_BUFMOD_H +#include +#endif +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "pcap-int.h" +#include "dlpisubs.h" + +#ifdef HAVE_SYS_BUFMOD_H +static void pcap_stream_err(const char *, int, char *); +#endif + +/* + * Get the packet statistics. + */ +int +pcap_stats_dlpi(pcap_t *p, struct pcap_stat *ps) +{ + + /* + * "ps_recv" counts packets handed to the filter, not packets + * that passed the filter. As filtering is done in userland, + * this would not include packets dropped because we ran out + * of buffer space; in order to make this more like other + * platforms (Linux 2.4 and later, BSDs with BPF), where the + * "packets received" count includes packets received but dropped + * due to running out of buffer space, and to keep from confusing + * applications that, for example, compute packet drop percentages, + * we also make it count packets dropped by "bufmod" (otherwise we + * might run the risk of the packet drop count being bigger than + * the received-packet count). + * + * "ps_drop" counts packets dropped by "bufmod" because of + * flow control requirements or resource exhaustion; it doesn't + * count packets dropped by the interface driver, or packets + * dropped upstream. As filtering is done in userland, it counts + * packets regardless of whether they would've passed the filter. + * + * These statistics don't include packets not yet read from + * the kernel by libpcap, but they may include packets not + * yet read from libpcap by the application. + */ + *ps = p->md.stat; + + /* + * Add in the drop count, as per the above comment. + */ + ps->ps_recv += ps->ps_drop; + return (0); +} + +/* + * Loop through the packets and call the callback for each packet. + * Return the number of packets read. + */ +int +pcap_process_pkts(pcap_t *p, pcap_handler callback, u_char *user, + int count, u_char *bufp, int len) +{ + int n, caplen, origlen; + u_char *ep, *pk; + struct pcap_pkthdr pkthdr; +#ifdef HAVE_SYS_BUFMOD_H + struct sb_hdr *sbp; +#ifdef LBL_ALIGN + struct sb_hdr sbhdr; +#endif +#endif + + /* Loop through packets */ + ep = bufp + len; + n = 0; + +#ifdef HAVE_SYS_BUFMOD_H + while (bufp < ep) { + /* + * Has "pcap_breakloop()" been called? + * If so, return immediately - if we haven't read any + * packets, clear the flag and return -2 to indicate + * that we were told to break out of the loop, otherwise + * leave the flag set, so that the *next* call will break + * out of the loop without having read any packets, and + * return the number of packets we've processed so far. + */ + if (p->break_loop) { + if (n == 0) { + p->break_loop = 0; + return (-2); + } else { + p->bp = bufp; + p->cc = ep - bufp; + return (n); + } + } +#ifdef LBL_ALIGN + if ((long)bufp & 3) { + sbp = &sbhdr; + memcpy(sbp, bufp, sizeof(*sbp)); + } else +#endif + sbp = (struct sb_hdr *)bufp; + p->md.stat.ps_drop = sbp->sbh_drops; + pk = bufp + sizeof(*sbp); + bufp += sbp->sbh_totlen; + origlen = sbp->sbh_origlen; + caplen = sbp->sbh_msglen; +#else + origlen = len; + caplen = min(p->snapshot, len); + pk = bufp; + bufp += caplen; +#endif + ++p->md.stat.ps_recv; + if (bpf_filter(p->fcode.bf_insns, pk, origlen, caplen)) { +#ifdef HAVE_SYS_BUFMOD_H + pkthdr.ts.tv_sec = sbp->sbh_timestamp.tv_sec; + pkthdr.ts.tv_usec = sbp->sbh_timestamp.tv_usec; +#else + (void) gettimeofday(&pkthdr.ts, NULL); +#endif + pkthdr.len = origlen; + pkthdr.caplen = caplen; + /* Insure caplen does not exceed snapshot */ + if (pkthdr.caplen > p->snapshot) + pkthdr.caplen = p->snapshot; + (*callback)(user, &pkthdr, pk); + if (++n >= count && count >= 0) { + p->cc = ep - bufp; + p->bp = bufp; + return (n); + } + } +#ifdef HAVE_SYS_BUFMOD_H + } +#endif + p->cc = 0; + return (n); +} + +/* + * Process the mac type. Returns -1 if no matching mac type found, otherwise 0. + */ +int +pcap_process_mactype(pcap_t *p, u_int mactype) +{ + int retv = 0; + + switch (mactype) { + + case DL_CSMACD: + case DL_ETHER: + p->linktype = DLT_EN10MB; + p->offset = 2; + /* + * This is (presumably) a real Ethernet capture; give it a + * link-layer-type list with DLT_EN10MB and DLT_DOCSIS, so + * that an application can let you choose it, in case you're + * capturing DOCSIS traffic that a Cisco Cable Modem + * Termination System is putting out onto an Ethernet (it + * doesn't put an Ethernet header onto the wire, it puts raw + * DOCSIS frames out on the wire inside the low-level + * Ethernet framing). + */ + p->dlt_list = (u_int *)malloc(sizeof(u_int) * 2); + /* + * If that fails, just leave the list empty. + */ + if (p->dlt_list != NULL) { + p->dlt_list[0] = DLT_EN10MB; + p->dlt_list[1] = DLT_DOCSIS; + p->dlt_count = 2; + } + break; + + case DL_FDDI: + p->linktype = DLT_FDDI; + p->offset = 3; + break; + + case DL_TPR: + /* XXX - what about DL_TPB? Is that Token Bus? */ + p->linktype = DLT_IEEE802; + p->offset = 2; + break; + +#ifdef HAVE_SOLARIS + case DL_IPATM: + p->linktype = DLT_SUNATM; + p->offset = 0; /* works for LANE and LLC encapsulation */ + break; +#endif + + default: + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "unknown mactype %u", + mactype); + retv = -1; + } + + return (retv); +} + +#ifdef HAVE_SYS_BUFMOD_H +/* + * Push and configure the buffer module. Returns -1 for error, otherwise 0. + */ +int +pcap_conf_bufmod(pcap_t *p, int snaplen, int timeout) +{ + int retv = 0; + + bpf_u_int32 ss, chunksize; + + /* Non-standard call to get the data nicely buffered. */ + if (ioctl(p->fd, I_PUSH, "bufmod") != 0) { + pcap_stream_err("I_PUSH bufmod", errno, p->errbuf); + retv = -1; + } + + ss = snaplen; + if (ss > 0 && + strioctl(p->fd, SBIOCSSNAP, sizeof(ss), (char *)&ss) != 0) { + pcap_stream_err("SBIOCSSNAP", errno, p->errbuf); + retv = -1; + } + + /* Set up the bufmod timeout. */ + if (timeout != 0) { + struct timeval to; + + to.tv_sec = timeout / 1000; + to.tv_usec = (timeout * 1000) % 1000000; + if (strioctl(p->fd, SBIOCSTIME, sizeof(to), (char *)&to) != 0) { + pcap_stream_err("SBIOCSTIME", errno, p->errbuf); + retv = -1; + } + } + + /* Set the chunk length. */ + chunksize = CHUNKSIZE; + if (strioctl(p->fd, SBIOCSCHUNK, sizeof(chunksize), (char *)&chunksize) + != 0) { + pcap_stream_err("SBIOCSCHUNKP", errno, p->errbuf); + retv = -1; + } + + return (retv); +} +#endif /* HAVE_SYS_BUFMOD_H */ + +/* + * Allocate data buffer. Returns -1 if memory allocation fails, else 0. + */ +int +pcap_alloc_databuf(pcap_t *p) +{ + p->bufsize = PKTBUFSIZE; + p->buffer = (u_char *)malloc(p->bufsize + p->offset); + if (p->buffer == NULL) { + strlcpy(p->errbuf, pcap_strerror(errno), PCAP_ERRBUF_SIZE); + return (-1); + } + + return (0); +} + +/* + * Issue a STREAMS I_STR ioctl. Returns -1 on error, otherwise + * length of returned data on success. + */ +int +strioctl(int fd, int cmd, int len, char *dp) +{ + struct strioctl str; + int retv; + + str.ic_cmd = cmd; + str.ic_timout = -1; + str.ic_len = len; + str.ic_dp = dp; + if ((retv = ioctl(fd, I_STR, &str)) < 0) + return (retv); + + return (str.ic_len); +} + +#ifdef HAVE_SYS_BUFMOD_H +/* + * Write stream error message to errbuf. + */ +static void +pcap_stream_err(const char *func, int err, char *errbuf) +{ + snprintf(errbuf, PCAP_ERRBUF_SIZE, "%s: %s", func, pcap_strerror(err)); +} +#endif diff --git a/dlpisubs.h b/dlpisubs.h new file mode 100644 index 0000000..1b57d4d --- /dev/null +++ b/dlpisubs.h @@ -0,0 +1,28 @@ +/* + * @(#) $Header: /tcpdump/master/libpcap/dlpisubs.h,v 1.2 2008-04-04 19:37:45 guy Exp $ + */ + +#ifndef dlpisubs_h +#define dlpisubs_h + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Functions used by dlpisubs.c. + */ +int pcap_stats_dlpi(pcap_t *, struct pcap_stat *); +int pcap_process_pkts(pcap_t *, pcap_handler, u_char *, int, u_char *, int); +int pcap_process_mactype(pcap_t *, u_int); +#ifdef HAVE_SYS_BUFMOD_H +int pcap_conf_bufmod(pcap_t *, int, int); +#endif +int pcap_alloc_databuf(pcap_t *); +int strioctl(int, int, int, char *); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/etherent.c b/etherent.c new file mode 100644 index 0000000..d9de114 --- /dev/null +++ b/etherent.c @@ -0,0 +1,174 @@ +/* + * Copyright (c) 1990, 1993, 1994, 1995, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/etherent.c,v 1.23 2006-10-04 18:09:22 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef WIN32 +#include +#else /* WIN32 */ +#if HAVE_INTTYPES_H +#include +#elif HAVE_STDINT_H +#include +#endif +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +#include +#endif /* WIN32 */ + +#include +#include +#include +#include + +#include "pcap-int.h" + +#include + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +static inline int xdtoi(int); +static inline int skip_space(FILE *); +static inline int skip_line(FILE *); + +/* Hex digit to integer. */ +static inline int +xdtoi(c) + register int c; +{ + if (isdigit(c)) + return c - '0'; + else if (islower(c)) + return c - 'a' + 10; + else + return c - 'A' + 10; +} + +static inline int +skip_space(f) + FILE *f; +{ + int c; + + do { + c = getc(f); + } while (isspace(c) && c != '\n'); + + return c; +} + +static inline int +skip_line(f) + FILE *f; +{ + int c; + + do + c = getc(f); + while (c != '\n' && c != EOF); + + return c; +} + +struct pcap_etherent * +pcap_next_etherent(FILE *fp) +{ + register int c, d, i; + char *bp; + static struct pcap_etherent e; + + memset((char *)&e, 0, sizeof(e)); + do { + /* Find addr */ + c = skip_space(fp); + if (c == '\n') + continue; + + /* If this is a comment, or first thing on line + cannot be etehrnet address, skip the line. */ + if (!isxdigit(c)) { + c = skip_line(fp); + continue; + } + + /* must be the start of an address */ + for (i = 0; i < 6; i += 1) { + d = xdtoi(c); + c = getc(fp); + if (isxdigit(c)) { + d <<= 4; + d |= xdtoi(c); + c = getc(fp); + } + e.addr[i] = d; + if (c != ':') + break; + c = getc(fp); + } + if (c == EOF) + break; + + /* Must be whitespace */ + if (!isspace(c)) { + c = skip_line(fp); + continue; + } + c = skip_space(fp); + + /* hit end of line... */ + if (c == '\n') + continue; + + if (c == '#') { + c = skip_line(fp); + continue; + } + + /* pick up name */ + bp = e.name; + /* Use 'd' to prevent buffer overflow. */ + d = sizeof(e.name) - 1; + do { + *bp++ = c; + c = getc(fp); + } while (!isspace(c) && c != EOF && --d > 0); + *bp = '\0'; + + /* Eat trailing junk */ + if (c != '\n') + (void)skip_line(fp); + + return &e; + + } while (c != EOF); + + return (NULL); +} diff --git a/ethertype.h b/ethertype.h new file mode 100644 index 0000000..2d6bbeb --- /dev/null +++ b/ethertype.h @@ -0,0 +1,122 @@ +/* + * Copyright (c) 1993, 1994, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * @(#) $Header: /tcpdump/master/libpcap/ethertype.h,v 1.14 2005-09-05 09:06:58 guy Exp $ (LBL) + */ + +/* + * Ethernet types. + * + * We wrap the declarations with #ifdef, so that if a file includes + * , which may declare some of these, we don't + * get a bunch of complaints from the C compiler about redefinitions + * of these values. + * + * We declare all of them here so that no file has to include + * if all it needs are ETHERTYPE_ values. + */ + +#ifndef ETHERTYPE_PUP +#define ETHERTYPE_PUP 0x0200 /* PUP protocol */ +#endif +#ifndef ETHERTYPE_IP +#define ETHERTYPE_IP 0x0800 /* IP protocol */ +#endif +#ifndef ETHERTYPE_ARP +#define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */ +#endif +#ifndef ETHERTYPE_REVARP +#define ETHERTYPE_REVARP 0x8035 /* reverse Addr. resolution protocol */ +#endif +#ifndef ETHERTYPE_NS +#define ETHERTYPE_NS 0x0600 +#endif +#ifndef ETHERTYPE_SPRITE +#define ETHERTYPE_SPRITE 0x0500 +#endif +#ifndef ETHERTYPE_TRAIL +#define ETHERTYPE_TRAIL 0x1000 +#endif +#ifndef ETHERTYPE_MOPDL +#define ETHERTYPE_MOPDL 0x6001 +#endif +#ifndef ETHERTYPE_MOPRC +#define ETHERTYPE_MOPRC 0x6002 +#endif +#ifndef ETHERTYPE_DN +#define ETHERTYPE_DN 0x6003 +#endif +#ifndef ETHERTYPE_LAT +#define ETHERTYPE_LAT 0x6004 +#endif +#ifndef ETHERTYPE_SCA +#define ETHERTYPE_SCA 0x6007 +#endif +#ifndef ETHERTYPE_REVARP +#define ETHERTYPE_REVARP 0x8035 +#endif +#ifndef ETHERTYPE_LANBRIDGE +#define ETHERTYPE_LANBRIDGE 0x8038 +#endif +#ifndef ETHERTYPE_DECDNS +#define ETHERTYPE_DECDNS 0x803c +#endif +#ifndef ETHERTYPE_DECDTS +#define ETHERTYPE_DECDTS 0x803e +#endif +#ifndef ETHERTYPE_VEXP +#define ETHERTYPE_VEXP 0x805b +#endif +#ifndef ETHERTYPE_VPROD +#define ETHERTYPE_VPROD 0x805c +#endif +#ifndef ETHERTYPE_ATALK +#define ETHERTYPE_ATALK 0x809b +#endif +#ifndef ETHERTYPE_AARP +#define ETHERTYPE_AARP 0x80f3 +#endif +#ifndef ETHERTYPE_8021Q +#define ETHERTYPE_8021Q 0x8100 +#endif +#ifndef ETHERTYPE_IPX +#define ETHERTYPE_IPX 0x8137 +#endif +#ifndef ETHERTYPE_IPV6 +#define ETHERTYPE_IPV6 0x86dd +#endif +#ifndef ETHERTYPE_MPLS +#define ETHERTYPE_MPLS 0x8847 +#endif +#ifndef ETHERTYPE_MPLS_MULTI +#define ETHERTYPE_MPLS_MULTI 0x8848 +#endif +#ifndef ETHERTYPE_PPPOED +#define ETHERTYPE_PPPOED 0x8863 +#endif +#ifndef ETHERTYPE_PPPOES +#define ETHERTYPE_PPPOES 0x8864 +#endif +#ifndef ETHERTYPE_LOOPBACK +#define ETHERTYPE_LOOPBACK 0x9000 +#endif +#ifndef ETHERTYPE_8021QINQ +#define ETHERTYPE_8021QINQ 0x9100 +#endif diff --git a/fad-getad.c b/fad-getad.c new file mode 100644 index 0000000..742ae1f --- /dev/null +++ b/fad-getad.c @@ -0,0 +1,297 @@ +/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */ +/* + * Copyright (c) 1994, 1995, 1996, 1997, 1998 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/fad-getad.c,v 1.12 2007-09-14 00:44:55 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include + +#include + +#include +#include +#include +#include +#include +#include + +#include "pcap-int.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +#ifdef AF_PACKET +# ifdef HAVE_NETPACKET_PACKET_H +/* Solaris 11 and later, Linux distributions with newer glibc */ +# include +# else /* HAVE_NETPACKET_PACKET_H */ +/* LynxOS, Linux distributions with older glibc */ +# ifdef __Lynx__ +/* LynxOS */ +# include +# else /* __Lynx__ */ +/* Linux */ +# include +# include +# endif /* __Lynx__ */ +# endif /* HAVE_NETPACKET_PACKET_H */ +#endif /* AF_PACKET */ + +/* + * This is fun. + * + * In older BSD systems, socket addresses were fixed-length, and + * "sizeof (struct sockaddr)" gave the size of the structure. + * All addresses fit within a "struct sockaddr". + * + * In newer BSD systems, the socket address is variable-length, and + * there's an "sa_len" field giving the length of the structure; + * this allows socket addresses to be longer than 2 bytes of family + * and 14 bytes of data. + * + * Some commercial UNIXes use the old BSD scheme, some use the RFC 2553 + * variant of the old BSD scheme (with "struct sockaddr_storage" rather + * than "struct sockaddr"), and some use the new BSD scheme. + * + * Some versions of GNU libc use neither scheme, but has an "SA_LEN()" + * macro that determines the size based on the address family. Other + * versions don't have "SA_LEN()" (as it was in drafts of RFC 2553 + * but not in the final version). On the latter systems, we explicitly + * check the AF_ type to determine the length; we assume that on + * all those systems we have "struct sockaddr_storage". + */ +#ifndef SA_LEN +#ifdef HAVE_SOCKADDR_SA_LEN +#define SA_LEN(addr) ((addr)->sa_len) +#else /* HAVE_SOCKADDR_SA_LEN */ +#ifdef HAVE_SOCKADDR_STORAGE +static size_t +get_sa_len(struct sockaddr *addr) +{ + switch (addr->sa_family) { + +#ifdef AF_INET + case AF_INET: + return (sizeof (struct sockaddr_in)); +#endif + +#ifdef AF_INET6 + case AF_INET6: + return (sizeof (struct sockaddr_in6)); +#endif + +#ifdef AF_PACKET + case AF_PACKET: + return (sizeof (struct sockaddr_ll)); +#endif + + default: + return (sizeof (struct sockaddr)); + } +} +#define SA_LEN(addr) (get_sa_len(addr)) +#else /* HAVE_SOCKADDR_STORAGE */ +#define SA_LEN(addr) (sizeof (struct sockaddr)) +#endif /* HAVE_SOCKADDR_STORAGE */ +#endif /* HAVE_SOCKADDR_SA_LEN */ +#endif /* SA_LEN */ + +/* + * Get a list of all interfaces that are up and that we can open. + * Returns -1 on error, 0 otherwise. + * The list, as returned through "alldevsp", may be null if no interfaces + * were up and could be opened. + * + * This is the implementation used on platforms that have "getifaddrs()". + */ +int +pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf) +{ + pcap_if_t *devlist = NULL; + struct ifaddrs *ifap, *ifa; + struct sockaddr *addr, *netmask, *broadaddr, *dstaddr; + size_t addr_size, broadaddr_size, dstaddr_size; + int ret = 0; + char *p, *q; + + /* + * Get the list of interface addresses. + * + * Note: this won't return information about interfaces + * with no addresses; are there any such interfaces + * that would be capable of receiving packets? + * (Interfaces incapable of receiving packets aren't + * very interesting from libpcap's point of view.) + * + * LAN interfaces will probably have link-layer + * addresses; I don't know whether all implementations + * of "getifaddrs()" now, or in the future, will return + * those. + */ + if (getifaddrs(&ifap) != 0) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "getifaddrs: %s", pcap_strerror(errno)); + return (-1); + } + for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) { + /* + * Is this interface up? + */ + if (!(ifa->ifa_flags & IFF_UP)) { + /* + * No, so don't add it to the list. + */ + continue; + } + + /* + * "ifa_addr" was apparently null on at least one + * interface on some system. + * + * "ifa_broadaddr" may be non-null even on + * non-broadcast interfaces, and was null on + * at least one OpenBSD 3.4 system on at least + * one interface with IFF_BROADCAST set. + * + * "ifa_dstaddr" was, on at least one FreeBSD 4.1 + * system, non-null on a non-point-to-point + * interface. + * + * Therefore, we supply the address and netmask only + * if "ifa_addr" is non-null (if there's no address, + * there's obviously no netmask), and supply the + * broadcast and destination addresses if the appropriate + * flag is set *and* the appropriate "ifa_" entry doesn't + * evaluate to a null pointer. + */ + if (ifa->ifa_addr != NULL) { + addr = ifa->ifa_addr; + addr_size = SA_LEN(addr); + netmask = ifa->ifa_netmask; + } else { + addr = NULL; + addr_size = 0; + netmask = NULL; + } + if (ifa->ifa_flags & IFF_BROADCAST && + ifa->ifa_broadaddr != NULL) { + broadaddr = ifa->ifa_broadaddr; + broadaddr_size = SA_LEN(broadaddr); + } else { + broadaddr = NULL; + broadaddr_size = 0; + } + if (ifa->ifa_flags & IFF_POINTOPOINT && + ifa->ifa_dstaddr != NULL) { + dstaddr = ifa->ifa_dstaddr; + dstaddr_size = SA_LEN(ifa->ifa_dstaddr); + } else { + dstaddr = NULL; + dstaddr_size = 0; + } + + /* + * If this entry has a colon followed by a number at + * the end, we assume it's a logical interface. Those + * are just the way you assign multiple IP addresses to + * a real interface on Linux, so an entry for a logical + * interface should be treated like the entry for the + * real interface; we do that by stripping off the ":" + * and the number. + * + * XXX - should we do this only on Linux? + */ + p = strchr(ifa->ifa_name, ':'); + if (p != NULL) { + /* + * We have a ":"; is it followed by a number? + */ + q = p + 1; + while (isdigit((unsigned char)*q)) + q++; + if (*q == '\0') { + /* + * All digits after the ":" until the end. + * Strip off the ":" and everything after + * it. + */ + *p = '\0'; + } + } + + /* + * Add information for this address to the list. + */ + if (add_addr_to_iflist(&devlist, ifa->ifa_name, + ifa->ifa_flags, addr, addr_size, netmask, addr_size, + broadaddr, broadaddr_size, dstaddr, dstaddr_size, + errbuf) < 0) { + ret = -1; + break; + } + } + + freeifaddrs(ifap); + + if (ret != -1) { + /* + * We haven't had any errors yet; do any platform-specific + * operations to add devices. + */ + if (pcap_platform_finddevs(&devlist, errbuf) < 0) + ret = -1; + } + + if (ret == -1) { + /* + * We had an error; free the list we've been constructing. + */ + if (devlist != NULL) { + pcap_freealldevs(devlist); + devlist = NULL; + } + } + + *alldevsp = devlist; + return (ret); +} diff --git a/fad-gifc.c b/fad-gifc.c new file mode 100644 index 0000000..d0a2e99 --- /dev/null +++ b/fad-gifc.c @@ -0,0 +1,433 @@ +/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */ +/* + * Copyright (c) 1994, 1995, 1996, 1997, 1998 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/fad-gifc.c,v 1.12 2008-08-06 07:34:09 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include +#ifdef HAVE_SYS_SOCKIO_H +#include +#endif +#include /* concession to AIX */ + +struct mbuf; /* Squelch compiler warnings on some platforms for */ +struct rtentry; /* declarations in */ +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "pcap-int.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +/* + * This is fun. + * + * In older BSD systems, socket addresses were fixed-length, and + * "sizeof (struct sockaddr)" gave the size of the structure. + * All addresses fit within a "struct sockaddr". + * + * In newer BSD systems, the socket address is variable-length, and + * there's an "sa_len" field giving the length of the structure; + * this allows socket addresses to be longer than 2 bytes of family + * and 14 bytes of data. + * + * Some commercial UNIXes use the old BSD scheme, some use the RFC 2553 + * variant of the old BSD scheme (with "struct sockaddr_storage" rather + * than "struct sockaddr"), and some use the new BSD scheme. + * + * Some versions of GNU libc use neither scheme, but has an "SA_LEN()" + * macro that determines the size based on the address family. Other + * versions don't have "SA_LEN()" (as it was in drafts of RFC 2553 + * but not in the final version). + * + * We assume that a UNIX that doesn't have "getifaddrs()" and doesn't have + * SIOCGLIFCONF, but has SIOCGIFCONF, uses "struct sockaddr" for the + * address in an entry returned by SIOCGIFCONF. + */ +#ifndef SA_LEN +#ifdef HAVE_SOCKADDR_SA_LEN +#define SA_LEN(addr) ((addr)->sa_len) +#else /* HAVE_SOCKADDR_SA_LEN */ +#define SA_LEN(addr) (sizeof (struct sockaddr)) +#endif /* HAVE_SOCKADDR_SA_LEN */ +#endif /* SA_LEN */ + +/* + * This is also fun. + * + * There is no ioctl that returns the amount of space required for all + * the data that SIOCGIFCONF could return, and if a buffer is supplied + * that's not large enough for all the data SIOCGIFCONF could return, + * on at least some platforms it just returns the data that'd fit with + * no indication that there wasn't enough room for all the data, much + * less an indication of how much more room is required. + * + * The only way to ensure that we got all the data is to pass a buffer + * large enough that the amount of space in the buffer *not* filled in + * is greater than the largest possible entry. + * + * We assume that's "sizeof(ifreq.ifr_name)" plus 255, under the assumption + * that no address is more than 255 bytes (on systems where the "sa_len" + * field in a "struct sockaddr" is 1 byte, e.g. newer BSDs, that's the + * case, and addresses are unlikely to be bigger than that in any case). + */ +#define MAX_SA_LEN 255 + +/* + * Get a list of all interfaces that are up and that we can open. + * Returns -1 on error, 0 otherwise. + * The list, as returned through "alldevsp", may be null if no interfaces + * were up and could be opened. + * + * This is the implementation used on platforms that have SIOCGIFCONF but + * don't have any other mechanism for getting a list of interfaces. + * + * XXX - or platforms that have other, better mechanisms but for which + * we don't yet have code to use that mechanism; I think there's a better + * way on Linux, for example. + */ +int +pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf) +{ + pcap_if_t *devlist = NULL; + register int fd; + register struct ifreq *ifrp, *ifend, *ifnext; + int n; + struct ifconf ifc; + char *buf = NULL; + unsigned buf_size; +#if defined (HAVE_SOLARIS) || defined (HAVE_HPUX10_20_OR_LATER) + char *p, *q; +#endif + struct ifreq ifrflags, ifrnetmask, ifrbroadaddr, ifrdstaddr; + struct sockaddr *netmask, *broadaddr, *dstaddr; + size_t netmask_size, broadaddr_size, dstaddr_size; + int ret = 0; + + /* + * Create a socket from which to fetch the list of interfaces. + */ + fd = socket(AF_INET, SOCK_DGRAM, 0); + if (fd < 0) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "socket: %s", pcap_strerror(errno)); + return (-1); + } + + /* + * Start with an 8K buffer, and keep growing the buffer until + * we have more than "sizeof(ifrp->ifr_name) + MAX_SA_LEN" + * bytes left over in the buffer or we fail to get the + * interface list for some reason other than EINVAL (which is + * presumed here to mean "buffer is too small"). + */ + buf_size = 8192; + for (;;) { + buf = malloc(buf_size); + if (buf == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + (void)close(fd); + return (-1); + } + + ifc.ifc_len = buf_size; + ifc.ifc_buf = buf; + memset(buf, 0, buf_size); + if (ioctl(fd, SIOCGIFCONF, (char *)&ifc) < 0 + && errno != EINVAL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGIFCONF: %s", pcap_strerror(errno)); + (void)close(fd); + free(buf); + return (-1); + } + if (ifc.ifc_len < buf_size && + (buf_size - ifc.ifc_len) > sizeof(ifrp->ifr_name) + MAX_SA_LEN) + break; + free(buf); + buf_size *= 2; + } + + ifrp = (struct ifreq *)buf; + ifend = (struct ifreq *)(buf + ifc.ifc_len); + + for (; ifrp < ifend; ifrp = ifnext) { + /* + * XXX - what if this isn't an IPv4 address? Can + * we still get the netmask, etc. with ioctls on + * an IPv4 socket? + * + * The answer is probably platform-dependent, and + * if the answer is "no" on more than one platform, + * the way you work around it is probably platform- + * dependent as well. + */ + n = SA_LEN(&ifrp->ifr_addr) + sizeof(ifrp->ifr_name); + if (n < sizeof(*ifrp)) + ifnext = ifrp + 1; + else + ifnext = (struct ifreq *)((char *)ifrp + n); + + /* + * XXX - The 32-bit compatibility layer for Linux on IA-64 + * is slightly broken. It correctly converts the structures + * to and from kernel land from 64 bit to 32 bit but + * doesn't update ifc.ifc_len, leaving it larger than the + * amount really used. This means we read off the end + * of the buffer and encounter an interface with an + * "empty" name. Since this is highly unlikely to ever + * occur in a valid case we can just finish looking for + * interfaces if we see an empty name. + */ + if (!(*ifrp->ifr_name)) + break; + + /* + * Skip entries that begin with "dummy". + * XXX - what are these? Is this Linux-specific? + * Are there platforms on which we shouldn't do this? + */ + if (strncmp(ifrp->ifr_name, "dummy", 5) == 0) + continue; + + /* + * Get the flags for this interface, and skip it if it's + * not up. + */ + strncpy(ifrflags.ifr_name, ifrp->ifr_name, + sizeof(ifrflags.ifr_name)); + if (ioctl(fd, SIOCGIFFLAGS, (char *)&ifrflags) < 0) { + if (errno == ENXIO) + continue; + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGIFFLAGS: %.*s: %s", + (int)sizeof(ifrflags.ifr_name), + ifrflags.ifr_name, + pcap_strerror(errno)); + ret = -1; + break; + } + if (!(ifrflags.ifr_flags & IFF_UP)) + continue; + + /* + * Get the netmask for this address on this interface. + */ + strncpy(ifrnetmask.ifr_name, ifrp->ifr_name, + sizeof(ifrnetmask.ifr_name)); + memcpy(&ifrnetmask.ifr_addr, &ifrp->ifr_addr, + sizeof(ifrnetmask.ifr_addr)); + if (ioctl(fd, SIOCGIFNETMASK, (char *)&ifrnetmask) < 0) { + if (errno == EADDRNOTAVAIL) { + /* + * Not available. + */ + netmask = NULL; + netmask_size = 0; + } else { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGIFNETMASK: %.*s: %s", + (int)sizeof(ifrnetmask.ifr_name), + ifrnetmask.ifr_name, + pcap_strerror(errno)); + ret = -1; + break; + } + } else { + netmask = &ifrnetmask.ifr_addr; + netmask_size = SA_LEN(netmask); + } + + /* + * Get the broadcast address for this address on this + * interface (if any). + */ + if (ifrflags.ifr_flags & IFF_BROADCAST) { + strncpy(ifrbroadaddr.ifr_name, ifrp->ifr_name, + sizeof(ifrbroadaddr.ifr_name)); + memcpy(&ifrbroadaddr.ifr_addr, &ifrp->ifr_addr, + sizeof(ifrbroadaddr.ifr_addr)); + if (ioctl(fd, SIOCGIFBRDADDR, + (char *)&ifrbroadaddr) < 0) { + if (errno == EADDRNOTAVAIL) { + /* + * Not available. + */ + broadaddr = NULL; + broadaddr_size = 0; + } else { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGIFBRDADDR: %.*s: %s", + (int)sizeof(ifrbroadaddr.ifr_name), + ifrbroadaddr.ifr_name, + pcap_strerror(errno)); + ret = -1; + break; + } + } else { + broadaddr = &ifrbroadaddr.ifr_broadaddr; + broadaddr_size = SA_LEN(broadaddr); + } + } else { + /* + * Not a broadcast interface, so no broadcast + * address. + */ + broadaddr = NULL; + broadaddr_size = 0; + } + + /* + * Get the destination address for this address on this + * interface (if any). + */ + if (ifrflags.ifr_flags & IFF_POINTOPOINT) { + strncpy(ifrdstaddr.ifr_name, ifrp->ifr_name, + sizeof(ifrdstaddr.ifr_name)); + memcpy(&ifrdstaddr.ifr_addr, &ifrp->ifr_addr, + sizeof(ifrdstaddr.ifr_addr)); + if (ioctl(fd, SIOCGIFDSTADDR, + (char *)&ifrdstaddr) < 0) { + if (errno == EADDRNOTAVAIL) { + /* + * Not available. + */ + dstaddr = NULL; + dstaddr_size = 0; + } else { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGIFDSTADDR: %.*s: %s", + (int)sizeof(ifrdstaddr.ifr_name), + ifrdstaddr.ifr_name, + pcap_strerror(errno)); + ret = -1; + break; + } + } else { + dstaddr = &ifrdstaddr.ifr_dstaddr; + dstaddr_size = SA_LEN(dstaddr); + } + } else { + /* + * Not a point-to-point interface, so no destination + * address. + */ + dstaddr = NULL; + dstaddr_size = 0; + } + +#if defined (HAVE_SOLARIS) || defined (HAVE_HPUX10_20_OR_LATER) + /* + * If this entry has a colon followed by a number at + * the end, it's a logical interface. Those are just + * the way you assign multiple IP addresses to a real + * interface, so an entry for a logical interface should + * be treated like the entry for the real interface; + * we do that by stripping off the ":" and the number. + */ + p = strchr(ifrp->ifr_name, ':'); + if (p != NULL) { + /* + * We have a ":"; is it followed by a number? + */ + q = p + 1; + while (isdigit((unsigned char)*q)) + q++; + if (*q == '\0') { + /* + * All digits after the ":" until the end. + * Strip off the ":" and everything after + * it. + */ + *p = '\0'; + } + } +#endif + + /* + * Add information for this address to the list. + */ + if (add_addr_to_iflist(&devlist, ifrp->ifr_name, + ifrflags.ifr_flags, &ifrp->ifr_addr, + SA_LEN(&ifrp->ifr_addr), netmask, netmask_size, + broadaddr, broadaddr_size, dstaddr, dstaddr_size, + errbuf) < 0) { + ret = -1; + break; + } + } + free(buf); + (void)close(fd); + + if (ret != -1) { + /* + * We haven't had any errors yet; do any platform-specific + * operations to add devices. + */ + if (pcap_platform_finddevs(&devlist, errbuf) < 0) + ret = -1; + } + + if (ret == -1) { + /* + * We had an error; free the list we've been constructing. + */ + if (devlist != NULL) { + pcap_freealldevs(devlist); + devlist = NULL; + } + } + + *alldevsp = devlist; + return (ret); +} diff --git a/fad-glifc.c b/fad-glifc.c new file mode 100644 index 0000000..664bb78 --- /dev/null +++ b/fad-glifc.c @@ -0,0 +1,386 @@ +/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */ +/* + * Copyright (c) 1994, 1995, 1996, 1997, 1998 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/fad-glifc.c,v 1.7 2008-01-30 09:35:48 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include +#include +#ifdef HAVE_SYS_SOCKIO_H +#include +#endif +#include /* concession to AIX */ + +struct mbuf; /* Squelch compiler warnings on some platforms for */ +struct rtentry; /* declarations in */ +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "pcap-int.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +/* + * Get a list of all interfaces that are up and that we can open. + * Returns -1 on error, 0 otherwise. + * The list, as returned through "alldevsp", may be null if no interfaces + * were up and could be opened. + * + * This is the implementation used on platforms that have SIOCGLIFCONF + * but don't have "getifaddrs()". (Solaris 8 and later; we use + * SIOCGLIFCONF rather than SIOCGIFCONF in order to get IPv6 addresses.) + */ +int +pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf) +{ + pcap_if_t *devlist = NULL; + register int fd4, fd6, fd; + register struct lifreq *ifrp, *ifend; + struct lifnum ifn; + struct lifconf ifc; + char *buf = NULL; + unsigned buf_size; +#ifdef HAVE_SOLARIS + char *p, *q; +#endif + struct lifreq ifrflags, ifrnetmask, ifrbroadaddr, ifrdstaddr; + struct sockaddr *netmask, *broadaddr, *dstaddr; + int ret = 0; + + /* + * Create a socket from which to fetch the list of interfaces, + * and from which to fetch IPv4 information. + */ + fd4 = socket(AF_INET, SOCK_DGRAM, 0); + if (fd4 < 0) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "socket: %s", pcap_strerror(errno)); + return (-1); + } + + /* + * Create a socket from which to fetch IPv6 information. + */ + fd6 = socket(AF_INET6, SOCK_DGRAM, 0); + if (fd6 < 0) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "socket: %s", pcap_strerror(errno)); + (void)close(fd4); + return (-1); + } + + /* + * How many entries will SIOCGLIFCONF return? + */ + ifn.lifn_family = AF_UNSPEC; + ifn.lifn_flags = 0; + ifn.lifn_count = 0; + if (ioctl(fd4, SIOCGLIFNUM, (char *)&ifn) < 0) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGLIFNUM: %s", pcap_strerror(errno)); + (void)close(fd6); + (void)close(fd4); + return (-1); + } + + /* + * Allocate a buffer for those entries. + */ + buf_size = ifn.lifn_count * sizeof (struct lifreq); + buf = malloc(buf_size); + if (buf == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + (void)close(fd6); + (void)close(fd4); + return (-1); + } + + /* + * Get the entries. + */ + ifc.lifc_len = buf_size; + ifc.lifc_buf = buf; + ifc.lifc_family = AF_UNSPEC; + ifc.lifc_flags = 0; + memset(buf, 0, buf_size); + if (ioctl(fd4, SIOCGLIFCONF, (char *)&ifc) < 0) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGLIFCONF: %s", pcap_strerror(errno)); + (void)close(fd6); + (void)close(fd4); + free(buf); + return (-1); + } + + /* + * Loop over the entries. + */ + ifrp = (struct lifreq *)buf; + ifend = (struct lifreq *)(buf + ifc.lifc_len); + + for (; ifrp < ifend; ifrp++) { + /* + * IPv6 or not? + */ + if (((struct sockaddr *)&ifrp->lifr_addr)->sa_family == AF_INET6) + fd = fd6; + else + fd = fd4; + + /* + * Skip entries that begin with "dummy". + * XXX - what are these? Is this Linux-specific? + * Are there platforms on which we shouldn't do this? + */ + if (strncmp(ifrp->lifr_name, "dummy", 5) == 0) + continue; + +#ifdef HAVE_SOLARIS + /* + * Skip entries that have a ":" followed by a number + * at the end - those are Solaris virtual interfaces + * on which you can't capture. + */ + p = strchr(ifrp->lifr_name, ':'); + if (p != NULL) { + /* + * We have a ":"; is it followed by a number? + */ + while (isdigit((unsigned char)*p)) + p++; + if (*p == '\0') { + /* + * All digits after the ":" until the end. + */ + continue; + } + } +#endif + + /* + * Get the flags for this interface, and skip it if it's + * not up. + */ + strncpy(ifrflags.lifr_name, ifrp->lifr_name, + sizeof(ifrflags.lifr_name)); + if (ioctl(fd, SIOCGLIFFLAGS, (char *)&ifrflags) < 0) { + if (errno == ENXIO) + continue; + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGLIFFLAGS: %.*s: %s", + (int)sizeof(ifrflags.lifr_name), + ifrflags.lifr_name, + pcap_strerror(errno)); + ret = -1; + break; + } + if (!(ifrflags.lifr_flags & IFF_UP)) + continue; + + /* + * Get the netmask for this address on this interface. + */ + strncpy(ifrnetmask.lifr_name, ifrp->lifr_name, + sizeof(ifrnetmask.lifr_name)); + memcpy(&ifrnetmask.lifr_addr, &ifrp->lifr_addr, + sizeof(ifrnetmask.lifr_addr)); + if (ioctl(fd, SIOCGLIFNETMASK, (char *)&ifrnetmask) < 0) { + if (errno == EADDRNOTAVAIL) { + /* + * Not available. + */ + netmask = NULL; + } else { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGLIFNETMASK: %.*s: %s", + (int)sizeof(ifrnetmask.lifr_name), + ifrnetmask.lifr_name, + pcap_strerror(errno)); + ret = -1; + break; + } + } else + netmask = (struct sockaddr *)&ifrnetmask.lifr_addr; + + /* + * Get the broadcast address for this address on this + * interface (if any). + */ + if (ifrflags.lifr_flags & IFF_BROADCAST) { + strncpy(ifrbroadaddr.lifr_name, ifrp->lifr_name, + sizeof(ifrbroadaddr.lifr_name)); + memcpy(&ifrbroadaddr.lifr_addr, &ifrp->lifr_addr, + sizeof(ifrbroadaddr.lifr_addr)); + if (ioctl(fd, SIOCGLIFBRDADDR, + (char *)&ifrbroadaddr) < 0) { + if (errno == EADDRNOTAVAIL) { + /* + * Not available. + */ + broadaddr = NULL; + } else { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGLIFBRDADDR: %.*s: %s", + (int)sizeof(ifrbroadaddr.lifr_name), + ifrbroadaddr.lifr_name, + pcap_strerror(errno)); + ret = -1; + break; + } + } else + broadaddr = (struct sockaddr *)&ifrbroadaddr.lifr_broadaddr; + } else { + /* + * Not a broadcast interface, so no broadcast + * address. + */ + broadaddr = NULL; + } + + /* + * Get the destination address for this address on this + * interface (if any). + */ + if (ifrflags.lifr_flags & IFF_POINTOPOINT) { + strncpy(ifrdstaddr.lifr_name, ifrp->lifr_name, + sizeof(ifrdstaddr.lifr_name)); + memcpy(&ifrdstaddr.lifr_addr, &ifrp->lifr_addr, + sizeof(ifrdstaddr.lifr_addr)); + if (ioctl(fd, SIOCGLIFDSTADDR, + (char *)&ifrdstaddr) < 0) { + if (errno == EADDRNOTAVAIL) { + /* + * Not available. + */ + dstaddr = NULL; + } else { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGLIFDSTADDR: %.*s: %s", + (int)sizeof(ifrdstaddr.lifr_name), + ifrdstaddr.lifr_name, + pcap_strerror(errno)); + ret = -1; + break; + } + } else + dstaddr = (struct sockaddr *)&ifrdstaddr.lifr_dstaddr; + } else + dstaddr = NULL; + +#ifdef HAVE_SOLARIS + /* + * If this entry has a colon followed by a number at + * the end, it's a logical interface. Those are just + * the way you assign multiple IP addresses to a real + * interface, so an entry for a logical interface should + * be treated like the entry for the real interface; + * we do that by stripping off the ":" and the number. + */ + p = strchr(ifrp->lifr_name, ':'); + if (p != NULL) { + /* + * We have a ":"; is it followed by a number? + */ + q = p + 1; + while (isdigit((unsigned char)*q)) + q++; + if (*q == '\0') { + /* + * All digits after the ":" until the end. + * Strip off the ":" and everything after + * it. + */ + *p = '\0'; + } + } +#endif + + /* + * Add information for this address to the list. + */ + if (add_addr_to_iflist(&devlist, ifrp->lifr_name, + ifrflags.lifr_flags, (struct sockaddr *)&ifrp->lifr_addr, + sizeof (struct sockaddr_storage), + netmask, sizeof (struct sockaddr_storage), + broadaddr, sizeof (struct sockaddr_storage), + dstaddr, sizeof (struct sockaddr_storage), errbuf) < 0) { + ret = -1; + break; + } + } + free(buf); + (void)close(fd6); + (void)close(fd4); + + if (ret != -1) { + /* + * We haven't had any errors yet; do any platform-specific + * operations to add devices. + */ + if (pcap_platform_finddevs(&devlist, errbuf) < 0) + ret = -1; + } + + if (ret == -1) { + /* + * We had an error; free the list we've been constructing. + */ + if (devlist != NULL) { + pcap_freealldevs(devlist); + devlist = NULL; + } + } + + *alldevsp = devlist; + return (ret); +} diff --git a/fad-null.c b/fad-null.c new file mode 100644 index 0000000..26d791d --- /dev/null +++ b/fad-null.c @@ -0,0 +1,65 @@ +/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */ +/* + * Copyright (c) 1994, 1995, 1996, 1997, 1998 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/fad-null.c,v 1.2 2003-11-15 23:23:58 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include + +/* + * Get a list of all interfaces that are up and that we can open. + * Returns -1 on error, 0 otherwise. + * The list, as returned through "alldevsp", may be null if no interfaces + * were up and could be opened. + * + * This is the implementation used on platforms that have no support for + * packet capture. + */ +int +pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf) +{ + /* + * Succeed, but don't return any interfaces; we return only those + * we can open, and we can't open any if there's no support + * for packet capture. + */ + *alldevsp = NULL; + return (0); +} diff --git a/fad-sita.c b/fad-sita.c new file mode 100644 index 0000000..2619045 --- /dev/null +++ b/fad-sita.c @@ -0,0 +1,61 @@ +/* + * fad-sita.c: Packet capture interface additions for SITA ACN devices + * + * Copyright (c) 2007 Fulko Hew, SITA INC Canada, Inc + * + * License: BSD + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. The names of the authors may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + + /* $Id: fad-sita.c */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include "pcap-int.h" + +#include "pcap-sita.h" + +extern pcap_if_t *acn_if_list; /* pcap's list of available interfaces */ + +int pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf) { + + //printf("pcap_findalldevs()\n"); // fulko + + *alldevsp = 0; /* initialize the returned variables before we do anything */ + strcpy(errbuf, ""); + if (acn_parse_hosts_file(errbuf)) /* scan the hosts file for potential IOPs */ + { + //printf("pcap_findalldevs() returning BAD after parsehosts\n"); // fulko + return -1; + } + //printf("pcap_findalldevs() got hostlist now finding devs\n"); // fulko + if (acn_findalldevs(errbuf)) /* then ask the IOPs for their monitorable devices */ + { + //printf("pcap_findalldevs() returning BAD after findalldevs\n"); // fulko + return -1; + } + *alldevsp = acn_if_list; + acn_if_list = 0; /* then forget our list head, because someone will call pcap_freealldevs() to empty the malloc'ed stuff */ + //printf("pcap_findalldevs() returning ZERO OK\n"); // fulko + return 0; +} diff --git a/fad-win32.c b/fad-win32.c new file mode 100644 index 0000000..241a926 --- /dev/null +++ b/fad-win32.c @@ -0,0 +1,327 @@ +/* + * Copyright (c) 2002 - 2005 NetGroup, Politecnico di Torino (Italy) + * Copyright (c) 2005 - 2006 CACE Technologies, Davis (California) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Politecnico di Torino, CACE Technologies + * nor the names of its contributors may be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/fad-win32.c,v 1.15 2007-09-25 20:34:36 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include + +#include + +/* + * Add an entry to the list of addresses for an interface. + * "curdev" is the entry for that interface. + */ +static int +add_addr_to_list(pcap_if_t *curdev, struct sockaddr *addr, + struct sockaddr *netmask, struct sockaddr *broadaddr, + struct sockaddr *dstaddr, char *errbuf) +{ + pcap_addr_t *curaddr, *prevaddr, *nextaddr; + + /* + * Allocate the new entry and fill it in. + */ + curaddr = (pcap_addr_t*)malloc(sizeof(pcap_addr_t)); + if (curaddr == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + return (-1); + } + + curaddr->next = NULL; + if (addr != NULL) { + curaddr->addr = (struct sockaddr*)dup_sockaddr(addr, sizeof(struct sockaddr_storage)); + if (curaddr->addr == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + free(curaddr); + return (-1); + } + } else + curaddr->addr = NULL; + + if (netmask != NULL) { + curaddr->netmask = (struct sockaddr*)dup_sockaddr(netmask, sizeof(struct sockaddr_storage)); + if (curaddr->netmask == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + free(curaddr); + return (-1); + } + } else + curaddr->netmask = NULL; + + if (broadaddr != NULL) { + curaddr->broadaddr = (struct sockaddr*)dup_sockaddr(broadaddr, sizeof(struct sockaddr_storage)); + if (curaddr->broadaddr == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + free(curaddr); + return (-1); + } + } else + curaddr->broadaddr = NULL; + + if (dstaddr != NULL) { + curaddr->dstaddr = (struct sockaddr*)dup_sockaddr(dstaddr, sizeof(struct sockaddr_storage)); + if (curaddr->dstaddr == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + free(curaddr); + return (-1); + } + } else + curaddr->dstaddr = NULL; + + /* + * Find the end of the list of addresses. + */ + for (prevaddr = curdev->addresses; prevaddr != NULL; prevaddr = nextaddr) { + nextaddr = prevaddr->next; + if (nextaddr == NULL) { + /* + * This is the end of the list. + */ + break; + } + } + + if (prevaddr == NULL) { + /* + * The list was empty; this is the first member. + */ + curdev->addresses = curaddr; + } else { + /* + * "prevaddr" is the last member of the list; append + * this member to it. + */ + prevaddr->next = curaddr; + } + + return (0); +} + + +static int +pcap_add_if_win32(pcap_if_t **devlist, char *name, const char *desc, + char *errbuf) +{ + pcap_if_t *curdev; + npf_if_addr if_addrs[MAX_NETWORK_ADDRESSES]; + LONG if_addr_size; + int res = 0; + + if_addr_size = MAX_NETWORK_ADDRESSES; + + /* + * Add an entry for this interface, with no addresses. + */ + if (add_or_find_if(&curdev, devlist, name, 0, desc, errbuf) == -1) { + /* + * Failure. + */ + return (-1); + } + + /* + * Get the list of addresses for the interface. + */ + if (!PacketGetNetInfoEx((void *)name, if_addrs, &if_addr_size)) { + /* + * Failure. + * + * We don't return an error, because this can happen with + * NdisWan interfaces, and we want to supply them even + * if we can't supply their addresses. + * + * We return an entry with an empty address list. + */ + return (0); + } + + /* + * Now add the addresses. + */ + while (if_addr_size-- > 0) { + /* + * "curdev" is an entry for this interface; add an entry for + * this address to its list of addresses. + */ + if(curdev == NULL) + break; + res = add_addr_to_list(curdev, + (struct sockaddr *)&if_addrs[if_addr_size].IPAddress, + (struct sockaddr *)&if_addrs[if_addr_size].SubnetMask, + (struct sockaddr *)&if_addrs[if_addr_size].Broadcast, + NULL, + errbuf); + if (res == -1) { + /* + * Failure. + */ + break; + } + } + + return (res); +} + + +/* + * Get a list of all interfaces that are up and that we can open. + * Returns -1 on error, 0 otherwise. + * The list, as returned through "alldevsp", may be null if no interfaces + * were up and could be opened. + * + * Win32 implementation, based on WinPcap + */ +int +pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf) +{ + pcap_if_t *devlist = NULL; + int ret = 0; + const char *desc; + char *AdaptersName; + ULONG NameLength; + char *name; + + if (!PacketGetAdapterNames(NULL, &NameLength)) + { + DWORD last_error = GetLastError(); + + if (last_error != ERROR_INSUFFICIENT_BUFFER) + { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "PacketGetAdapterNames: %s", + pcap_win32strerror()); + return (-1); + } + } + + if (NameLength > 0) + AdaptersName = (char*) malloc(NameLength); + else + { + *alldevsp = NULL; + return 0; + } + if (AdaptersName == NULL) + { + snprintf(errbuf, PCAP_ERRBUF_SIZE, "Cannot allocate enough memory to list the adapters."); + return (-1); + } + + if (!PacketGetAdapterNames(AdaptersName, &NameLength)) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "PacketGetAdapterNames: %s", + pcap_win32strerror()); + free(AdaptersName); + return (-1); + } + + /* + * "PacketGetAdapterNames()" returned a list of + * null-terminated ASCII interface name strings, + * terminated by a null string, followed by a list + * of null-terminated ASCII interface description + * strings, terminated by a null string. + * This means there are two ASCII nulls at the end + * of the first list. + * + * Find the end of the first list; that's the + * beginning of the second list. + */ + desc = &AdaptersName[0]; + while (*desc != '\0' || *(desc + 1) != '\0') + desc++; + + /* + * Found it - "desc" points to the first of the two + * nulls at the end of the list of names, so the + * first byte of the list of descriptions is two bytes + * after it. + */ + desc += 2; + + /* + * Loop over the elements in the first list. + */ + name = &AdaptersName[0]; + while (*name != '\0') { + /* + * Add an entry for this interface. + */ + if (pcap_add_if_win32(&devlist, name, desc, errbuf) == -1) { + /* + * Failure. + */ + ret = -1; + break; + } + name += strlen(name) + 1; + desc += strlen(desc) + 1; + } + + if (ret != -1) { + /* + * We haven't had any errors yet; do any platform-specific + * operations to add devices. + */ + if (pcap_platform_finddevs(&devlist, errbuf) < 0) + ret = -1; + } + + if (ret == -1) { + /* + * We had an error; free the list we've been constructing. + */ + if (devlist != NULL) { + pcap_freealldevs(devlist); + devlist = NULL; + } + } + + *alldevsp = devlist; + free(AdaptersName); + return (ret); +} diff --git a/gencode.c b/gencode.c new file mode 100644 index 0000000..532229a --- /dev/null +++ b/gencode.c @@ -0,0 +1,8535 @@ +/*#define CHASE_CHAIN*/ +/* + * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.309 2008-12-23 20:13:29 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef WIN32 +#include +#else /* WIN32 */ +#if HAVE_INTTYPES_H +#include +#elif HAVE_STDINT_H +#include +#endif +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +#include +#include +#endif /* WIN32 */ + +/* + * XXX - why was this included even on UNIX? + */ +#ifdef __MINGW32__ +#include "ip6_misc.h" +#endif + +#ifndef WIN32 + +#ifdef __NetBSD__ +#include +#endif + +#include +#include + +#endif /* WIN32 */ + +#include +#include +#include +#include +#include + +#ifdef MSDOS +#include "pcap-dos.h" +#endif + +#include "pcap-int.h" + +#include "ethertype.h" +#include "nlpid.h" +#include "llc.h" +#include "gencode.h" +#include "ieee80211.h" +#include "atmuni31.h" +#include "sunatmpos.h" +#include "ppp.h" +#include "pcap/sll.h" +#include "pcap/ipnet.h" +#include "arcnet.h" +#if defined(PF_PACKET) && defined(SO_ATTACH_FILTER) +#include +#include +#include +#endif +#ifdef HAVE_NET_PFVAR_H +#include +#include +#include +#include +#endif +#ifndef offsetof +#define offsetof(s, e) ((size_t)&((s *)0)->e) +#endif +#ifdef INET6 +#ifndef WIN32 +#include /* for "struct addrinfo" */ +#endif /* WIN32 */ +#endif /*INET6*/ +#include + +#define ETHERMTU 1500 + +#ifndef IPPROTO_SCTP +#define IPPROTO_SCTP 132 +#endif + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +#define JMP(c) ((c)|BPF_JMP|BPF_K) + +/* Locals */ +static jmp_buf top_ctx; +static pcap_t *bpf_pcap; + +/* Hack for updating VLAN, MPLS, and PPPoE offsets. */ +#ifdef WIN32 +static u_int orig_linktype = (u_int)-1, orig_nl = (u_int)-1, label_stack_depth = (u_int)-1; +#else +static u_int orig_linktype = -1U, orig_nl = -1U, label_stack_depth = -1U; +#endif + +/* XXX */ +#ifdef PCAP_FDDIPAD +static int pcap_fddipad; +#endif + +/* VARARGS */ +void +bpf_error(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + if (bpf_pcap != NULL) + (void)vsnprintf(pcap_geterr(bpf_pcap), PCAP_ERRBUF_SIZE, + fmt, ap); + va_end(ap); + longjmp(top_ctx, 1); + /* NOTREACHED */ +} + +static void init_linktype(pcap_t *); + +static void init_regs(void); +static int alloc_reg(void); +static void free_reg(int); + +static struct block *root; + +/* + * Value passed to gen_load_a() to indicate what the offset argument + * is relative to. + */ +enum e_offrel { + OR_PACKET, /* relative to the beginning of the packet */ + OR_LINK, /* relative to the beginning of the link-layer header */ + OR_MACPL, /* relative to the end of the MAC-layer header */ + OR_NET, /* relative to the network-layer header */ + OR_NET_NOSNAP, /* relative to the network-layer header, with no SNAP header at the link layer */ + OR_TRAN_IPV4, /* relative to the transport-layer header, with IPv4 network layer */ + OR_TRAN_IPV6 /* relative to the transport-layer header, with IPv6 network layer */ +}; + +#ifdef INET6 +/* + * As errors are handled by a longjmp, anything allocated must be freed + * in the longjmp handler, so it must be reachable from that handler. + * One thing that's allocated is the result of pcap_nametoaddrinfo(); + * it must be freed with freeaddrinfo(). This variable points to any + * addrinfo structure that would need to be freed. + */ +static struct addrinfo *ai; +#endif + +/* + * We divy out chunks of memory rather than call malloc each time so + * we don't have to worry about leaking memory. It's probably + * not a big deal if all this memory was wasted but if this ever + * goes into a library that would probably not be a good idea. + * + * XXX - this *is* in a library.... + */ +#define NCHUNKS 16 +#define CHUNK0SIZE 1024 +struct chunk { + u_int n_left; + void *m; +}; + +static struct chunk chunks[NCHUNKS]; +static int cur_chunk; + +static void *newchunk(u_int); +static void freechunks(void); +static inline struct block *new_block(int); +static inline struct slist *new_stmt(int); +static struct block *gen_retblk(int); +static inline void syntax(void); + +static void backpatch(struct block *, struct block *); +static void merge(struct block *, struct block *); +static struct block *gen_cmp(enum e_offrel, u_int, u_int, bpf_int32); +static struct block *gen_cmp_gt(enum e_offrel, u_int, u_int, bpf_int32); +static struct block *gen_cmp_ge(enum e_offrel, u_int, u_int, bpf_int32); +static struct block *gen_cmp_lt(enum e_offrel, u_int, u_int, bpf_int32); +static struct block *gen_cmp_le(enum e_offrel, u_int, u_int, bpf_int32); +static struct block *gen_mcmp(enum e_offrel, u_int, u_int, bpf_int32, + bpf_u_int32); +static struct block *gen_bcmp(enum e_offrel, u_int, u_int, const u_char *); +static struct block *gen_ncmp(enum e_offrel, bpf_u_int32, bpf_u_int32, + bpf_u_int32, bpf_u_int32, int, bpf_int32); +static struct slist *gen_load_llrel(u_int, u_int); +static struct slist *gen_load_macplrel(u_int, u_int); +static struct slist *gen_load_a(enum e_offrel, u_int, u_int); +static struct slist *gen_loadx_iphdrlen(void); +static struct block *gen_uncond(int); +static inline struct block *gen_true(void); +static inline struct block *gen_false(void); +static struct block *gen_ether_linktype(int); +static struct block *gen_ipnet_linktype(int); +static struct block *gen_linux_sll_linktype(int); +static struct slist *gen_load_prism_llprefixlen(void); +static struct slist *gen_load_avs_llprefixlen(void); +static struct slist *gen_load_radiotap_llprefixlen(void); +static struct slist *gen_load_ppi_llprefixlen(void); +static void insert_compute_vloffsets(struct block *); +static struct slist *gen_llprefixlen(void); +static struct slist *gen_off_macpl(void); +static int ethertype_to_ppptype(int); +static struct block *gen_linktype(int); +static struct block *gen_snap(bpf_u_int32, bpf_u_int32); +static struct block *gen_llc_linktype(int); +static struct block *gen_hostop(bpf_u_int32, bpf_u_int32, int, int, u_int, u_int); +#ifdef INET6 +static struct block *gen_hostop6(struct in6_addr *, struct in6_addr *, int, int, u_int, u_int); +#endif +static struct block *gen_ahostop(const u_char *, int); +static struct block *gen_ehostop(const u_char *, int); +static struct block *gen_fhostop(const u_char *, int); +static struct block *gen_thostop(const u_char *, int); +static struct block *gen_wlanhostop(const u_char *, int); +static struct block *gen_ipfchostop(const u_char *, int); +static struct block *gen_dnhostop(bpf_u_int32, int); +static struct block *gen_mpls_linktype(int); +static struct block *gen_host(bpf_u_int32, bpf_u_int32, int, int, int); +#ifdef INET6 +static struct block *gen_host6(struct in6_addr *, struct in6_addr *, int, int, int); +#endif +#ifndef INET6 +static struct block *gen_gateway(const u_char *, bpf_u_int32 **, int, int); +#endif +static struct block *gen_ipfrag(void); +static struct block *gen_portatom(int, bpf_int32); +static struct block *gen_portrangeatom(int, bpf_int32, bpf_int32); +#ifdef INET6 +static struct block *gen_portatom6(int, bpf_int32); +static struct block *gen_portrangeatom6(int, bpf_int32, bpf_int32); +#endif +struct block *gen_portop(int, int, int); +static struct block *gen_port(int, int, int); +struct block *gen_portrangeop(int, int, int, int); +static struct block *gen_portrange(int, int, int, int); +#ifdef INET6 +struct block *gen_portop6(int, int, int); +static struct block *gen_port6(int, int, int); +struct block *gen_portrangeop6(int, int, int, int); +static struct block *gen_portrange6(int, int, int, int); +#endif +static int lookup_proto(const char *, int); +static struct block *gen_protochain(int, int, int); +static struct block *gen_proto(int, int, int); +static struct slist *xfer_to_x(struct arth *); +static struct slist *xfer_to_a(struct arth *); +static struct block *gen_mac_multicast(int); +static struct block *gen_len(int, int); +static struct block *gen_check_802_11_data_frame(void); + +static struct block *gen_ppi_dlt_check(void); +static struct block *gen_msg_abbrev(int type); + +static void * +newchunk(n) + u_int n; +{ + struct chunk *cp; + int k; + size_t size; + +#ifndef __NetBSD__ + /* XXX Round up to nearest long. */ + n = (n + sizeof(long) - 1) & ~(sizeof(long) - 1); +#else + /* XXX Round up to structure boundary. */ + n = ALIGN(n); +#endif + + cp = &chunks[cur_chunk]; + if (n > cp->n_left) { + ++cp, k = ++cur_chunk; + if (k >= NCHUNKS) + bpf_error("out of memory"); + size = CHUNK0SIZE << k; + cp->m = (void *)malloc(size); + if (cp->m == NULL) + bpf_error("out of memory"); + memset((char *)cp->m, 0, size); + cp->n_left = size; + if (n > size) + bpf_error("out of memory"); + } + cp->n_left -= n; + return (void *)((char *)cp->m + cp->n_left); +} + +static void +freechunks() +{ + int i; + + cur_chunk = 0; + for (i = 0; i < NCHUNKS; ++i) + if (chunks[i].m != NULL) { + free(chunks[i].m); + chunks[i].m = NULL; + } +} + +/* + * A strdup whose allocations are freed after code generation is over. + */ +char * +sdup(s) + register const char *s; +{ + int n = strlen(s) + 1; + char *cp = newchunk(n); + + strlcpy(cp, s, n); + return (cp); +} + +static inline struct block * +new_block(code) + int code; +{ + struct block *p; + + p = (struct block *)newchunk(sizeof(*p)); + p->s.code = code; + p->head = p; + + return p; +} + +static inline struct slist * +new_stmt(code) + int code; +{ + struct slist *p; + + p = (struct slist *)newchunk(sizeof(*p)); + p->s.code = code; + + return p; +} + +static struct block * +gen_retblk(v) + int v; +{ + struct block *b = new_block(BPF_RET|BPF_K); + + b->s.k = v; + return b; +} + +static inline void +syntax() +{ + bpf_error("syntax error in filter expression"); +} + +static bpf_u_int32 netmask; +static int snaplen; +int no_optimize; +#ifdef WIN32 +static int +pcap_compile_unsafe(pcap_t *p, struct bpf_program *program, + const char *buf, int optimize, bpf_u_int32 mask); + +int +pcap_compile(pcap_t *p, struct bpf_program *program, + const char *buf, int optimize, bpf_u_int32 mask) +{ + int result; + + EnterCriticalSection(&g_PcapCompileCriticalSection); + + result = pcap_compile_unsafe(p, program, buf, optimize, mask); + + LeaveCriticalSection(&g_PcapCompileCriticalSection); + + return result; +} + +static int +pcap_compile_unsafe(pcap_t *p, struct bpf_program *program, + const char *buf, int optimize, bpf_u_int32 mask) +#else /* WIN32 */ +int +pcap_compile(pcap_t *p, struct bpf_program *program, + const char *buf, int optimize, bpf_u_int32 mask) +#endif /* WIN32 */ +{ + extern int n_errors; + const char * volatile xbuf = buf; + u_int len; + + no_optimize = 0; + n_errors = 0; + root = NULL; + bpf_pcap = p; + init_regs(); + if (setjmp(top_ctx)) { +#ifdef INET6 + if (ai != NULL) { + freeaddrinfo(ai); + ai = NULL; + } +#endif + lex_cleanup(); + freechunks(); + return (-1); + } + + netmask = mask; + + snaplen = pcap_snapshot(p); + if (snaplen == 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "snaplen of 0 rejects all packets"); + return -1; + } + + lex_init(xbuf ? xbuf : ""); + init_linktype(p); + (void)pcap_parse(); + + if (n_errors) + syntax(); + + if (root == NULL) + root = gen_retblk(snaplen); + + if (optimize && !no_optimize) { + bpf_optimize(&root); + if (root == NULL || + (root->s.code == (BPF_RET|BPF_K) && root->s.k == 0)) + bpf_error("expression rejects all packets"); + } + program->bf_insns = icode_to_fcode(root, &len); + program->bf_len = len; + + lex_cleanup(); + freechunks(); + return (0); +} + +/* + * entry point for using the compiler with no pcap open + * pass in all the stuff that is needed explicitly instead. + */ +int +pcap_compile_nopcap(int snaplen_arg, int linktype_arg, + struct bpf_program *program, + const char *buf, int optimize, bpf_u_int32 mask) +{ + pcap_t *p; + int ret; + + p = pcap_open_dead(linktype_arg, snaplen_arg); + if (p == NULL) + return (-1); + ret = pcap_compile(p, program, buf, optimize, mask); + pcap_close(p); + return (ret); +} + +/* + * Clean up a "struct bpf_program" by freeing all the memory allocated + * in it. + */ +void +pcap_freecode(struct bpf_program *program) +{ + program->bf_len = 0; + if (program->bf_insns != NULL) { + free((char *)program->bf_insns); + program->bf_insns = NULL; + } +} + +/* + * Backpatch the blocks in 'list' to 'target'. The 'sense' field indicates + * which of the jt and jf fields has been resolved and which is a pointer + * back to another unresolved block (or nil). At least one of the fields + * in each block is already resolved. + */ +static void +backpatch(list, target) + struct block *list, *target; +{ + struct block *next; + + while (list) { + if (!list->sense) { + next = JT(list); + JT(list) = target; + } else { + next = JF(list); + JF(list) = target; + } + list = next; + } +} + +/* + * Merge the lists in b0 and b1, using the 'sense' field to indicate + * which of jt and jf is the link. + */ +static void +merge(b0, b1) + struct block *b0, *b1; +{ + register struct block **p = &b0; + + /* Find end of list. */ + while (*p) + p = !((*p)->sense) ? &JT(*p) : &JF(*p); + + /* Concatenate the lists. */ + *p = b1; +} + +void +finish_parse(p) + struct block *p; +{ + struct block *ppi_dlt_check; + + /* + * Insert before the statements of the first (root) block any + * statements needed to load the lengths of any variable-length + * headers into registers. + * + * XXX - a fancier strategy would be to insert those before the + * statements of all blocks that use those lengths and that + * have no predecessors that use them, so that we only compute + * the lengths if we need them. There might be even better + * approaches than that. + * + * However, those strategies would be more complicated, and + * as we don't generate code to compute a length if the + * program has no tests that use the length, and as most + * tests will probably use those lengths, we would just + * postpone computing the lengths so that it's not done + * for tests that fail early, and it's not clear that's + * worth the effort. + */ + insert_compute_vloffsets(p->head); + + /* + * For DLT_PPI captures, generate a check of the per-packet + * DLT value to make sure it's DLT_IEEE802_11. + */ + ppi_dlt_check = gen_ppi_dlt_check(); + if (ppi_dlt_check != NULL) + gen_and(ppi_dlt_check, p); + + backpatch(p, gen_retblk(snaplen)); + p->sense = !p->sense; + backpatch(p, gen_retblk(0)); + root = p->head; +} + +void +gen_and(b0, b1) + struct block *b0, *b1; +{ + backpatch(b0, b1->head); + b0->sense = !b0->sense; + b1->sense = !b1->sense; + merge(b1, b0); + b1->sense = !b1->sense; + b1->head = b0->head; +} + +void +gen_or(b0, b1) + struct block *b0, *b1; +{ + b0->sense = !b0->sense; + backpatch(b0, b1->head); + b0->sense = !b0->sense; + merge(b1, b0); + b1->head = b0->head; +} + +void +gen_not(b) + struct block *b; +{ + b->sense = !b->sense; +} + +static struct block * +gen_cmp(offrel, offset, size, v) + enum e_offrel offrel; + u_int offset, size; + bpf_int32 v; +{ + return gen_ncmp(offrel, offset, size, 0xffffffff, BPF_JEQ, 0, v); +} + +static struct block * +gen_cmp_gt(offrel, offset, size, v) + enum e_offrel offrel; + u_int offset, size; + bpf_int32 v; +{ + return gen_ncmp(offrel, offset, size, 0xffffffff, BPF_JGT, 0, v); +} + +static struct block * +gen_cmp_ge(offrel, offset, size, v) + enum e_offrel offrel; + u_int offset, size; + bpf_int32 v; +{ + return gen_ncmp(offrel, offset, size, 0xffffffff, BPF_JGE, 0, v); +} + +static struct block * +gen_cmp_lt(offrel, offset, size, v) + enum e_offrel offrel; + u_int offset, size; + bpf_int32 v; +{ + return gen_ncmp(offrel, offset, size, 0xffffffff, BPF_JGE, 1, v); +} + +static struct block * +gen_cmp_le(offrel, offset, size, v) + enum e_offrel offrel; + u_int offset, size; + bpf_int32 v; +{ + return gen_ncmp(offrel, offset, size, 0xffffffff, BPF_JGT, 1, v); +} + +static struct block * +gen_mcmp(offrel, offset, size, v, mask) + enum e_offrel offrel; + u_int offset, size; + bpf_int32 v; + bpf_u_int32 mask; +{ + return gen_ncmp(offrel, offset, size, mask, BPF_JEQ, 0, v); +} + +static struct block * +gen_bcmp(offrel, offset, size, v) + enum e_offrel offrel; + register u_int offset, size; + register const u_char *v; +{ + register struct block *b, *tmp; + + b = NULL; + while (size >= 4) { + register const u_char *p = &v[size - 4]; + bpf_int32 w = ((bpf_int32)p[0] << 24) | + ((bpf_int32)p[1] << 16) | ((bpf_int32)p[2] << 8) | p[3]; + + tmp = gen_cmp(offrel, offset + size - 4, BPF_W, w); + if (b != NULL) + gen_and(b, tmp); + b = tmp; + size -= 4; + } + while (size >= 2) { + register const u_char *p = &v[size - 2]; + bpf_int32 w = ((bpf_int32)p[0] << 8) | p[1]; + + tmp = gen_cmp(offrel, offset + size - 2, BPF_H, w); + if (b != NULL) + gen_and(b, tmp); + b = tmp; + size -= 2; + } + if (size > 0) { + tmp = gen_cmp(offrel, offset, BPF_B, (bpf_int32)v[0]); + if (b != NULL) + gen_and(b, tmp); + b = tmp; + } + return b; +} + +/* + * AND the field of size "size" at offset "offset" relative to the header + * specified by "offrel" with "mask", and compare it with the value "v" + * with the test specified by "jtype"; if "reverse" is true, the test + * should test the opposite of "jtype". + */ +static struct block * +gen_ncmp(offrel, offset, size, mask, jtype, reverse, v) + enum e_offrel offrel; + bpf_int32 v; + bpf_u_int32 offset, size, mask, jtype; + int reverse; +{ + struct slist *s, *s2; + struct block *b; + + s = gen_load_a(offrel, offset, size); + + if (mask != 0xffffffff) { + s2 = new_stmt(BPF_ALU|BPF_AND|BPF_K); + s2->s.k = mask; + sappend(s, s2); + } + + b = new_block(JMP(jtype)); + b->stmts = s; + b->s.k = v; + if (reverse && (jtype == BPF_JGT || jtype == BPF_JGE)) + gen_not(b); + return b; +} + +/* + * Various code constructs need to know the layout of the data link + * layer. These variables give the necessary offsets from the beginning + * of the packet data. + */ + +/* + * This is the offset of the beginning of the link-layer header from + * the beginning of the raw packet data. + * + * It's usually 0, except for 802.11 with a fixed-length radio header. + * (For 802.11 with a variable-length radio header, we have to generate + * code to compute that offset; off_ll is 0 in that case.) + */ +static u_int off_ll; + +/* + * If there's a variable-length header preceding the link-layer header, + * "reg_off_ll" is the register number for a register containing the + * length of that header, and therefore the offset of the link-layer + * header from the beginning of the raw packet data. Otherwise, + * "reg_off_ll" is -1. + */ +static int reg_off_ll; + +/* + * This is the offset of the beginning of the MAC-layer header from + * the beginning of the link-layer header. + * It's usually 0, except for ATM LANE, where it's the offset, relative + * to the beginning of the raw packet data, of the Ethernet header, and + * for Ethernet with various additional information. + */ +static u_int off_mac; + +/* + * This is the offset of the beginning of the MAC-layer payload, + * from the beginning of the raw packet data. + * + * I.e., it's the sum of the length of the link-layer header (without, + * for example, any 802.2 LLC header, so it's the MAC-layer + * portion of that header), plus any prefix preceding the + * link-layer header. + */ +static u_int off_macpl; + +/* + * This is 1 if the offset of the beginning of the MAC-layer payload + * from the beginning of the link-layer header is variable-length. + */ +static int off_macpl_is_variable; + +/* + * If the link layer has variable_length headers, "reg_off_macpl" + * is the register number for a register containing the length of the + * link-layer header plus the length of any variable-length header + * preceding the link-layer header. Otherwise, "reg_off_macpl" + * is -1. + */ +static int reg_off_macpl; + +/* + * "off_linktype" is the offset to information in the link-layer header + * giving the packet type. This offset is relative to the beginning + * of the link-layer header (i.e., it doesn't include off_ll). + * + * For Ethernet, it's the offset of the Ethernet type field. + * + * For link-layer types that always use 802.2 headers, it's the + * offset of the LLC header. + * + * For PPP, it's the offset of the PPP type field. + * + * For Cisco HDLC, it's the offset of the CHDLC type field. + * + * For BSD loopback, it's the offset of the AF_ value. + * + * For Linux cooked sockets, it's the offset of the type field. + * + * It's set to -1 for no encapsulation, in which case, IP is assumed. + */ +static u_int off_linktype; + +/* + * TRUE if "pppoes" appeared in the filter; it causes link-layer type + * checks to check the PPP header, assumed to follow a LAN-style link- + * layer header and a PPPoE session header. + */ +static int is_pppoes = 0; + +/* + * TRUE if the link layer includes an ATM pseudo-header. + */ +static int is_atm = 0; + +/* + * TRUE if "lane" appeared in the filter; it causes us to generate + * code that assumes LANE rather than LLC-encapsulated traffic in SunATM. + */ +static int is_lane = 0; + +/* + * These are offsets for the ATM pseudo-header. + */ +static u_int off_vpi; +static u_int off_vci; +static u_int off_proto; + +/* + * These are offsets for the MTP2 fields. + */ +static u_int off_li; + +/* + * These are offsets for the MTP3 fields. + */ +static u_int off_sio; +static u_int off_opc; +static u_int off_dpc; +static u_int off_sls; + +/* + * This is the offset of the first byte after the ATM pseudo_header, + * or -1 if there is no ATM pseudo-header. + */ +static u_int off_payload; + +/* + * These are offsets to the beginning of the network-layer header. + * They are relative to the beginning of the MAC-layer payload (i.e., + * they don't include off_ll or off_macpl). + * + * If the link layer never uses 802.2 LLC: + * + * "off_nl" and "off_nl_nosnap" are the same. + * + * If the link layer always uses 802.2 LLC: + * + * "off_nl" is the offset if there's a SNAP header following + * the 802.2 header; + * + * "off_nl_nosnap" is the offset if there's no SNAP header. + * + * If the link layer is Ethernet: + * + * "off_nl" is the offset if the packet is an Ethernet II packet + * (we assume no 802.3+802.2+SNAP); + * + * "off_nl_nosnap" is the offset if the packet is an 802.3 packet + * with an 802.2 header following it. + */ +static u_int off_nl; +static u_int off_nl_nosnap; + +static int linktype; + +static void +init_linktype(p) + pcap_t *p; +{ + linktype = pcap_datalink(p); +#ifdef PCAP_FDDIPAD + pcap_fddipad = p->fddipad; +#endif + + /* + * Assume it's not raw ATM with a pseudo-header, for now. + */ + off_mac = 0; + is_atm = 0; + is_lane = 0; + off_vpi = -1; + off_vci = -1; + off_proto = -1; + off_payload = -1; + + /* + * And that we're not doing PPPoE. + */ + is_pppoes = 0; + + /* + * And assume we're not doing SS7. + */ + off_li = -1; + off_sio = -1; + off_opc = -1; + off_dpc = -1; + off_sls = -1; + + /* + * Also assume it's not 802.11. + */ + off_ll = 0; + off_macpl = 0; + off_macpl_is_variable = 0; + + orig_linktype = -1; + orig_nl = -1; + label_stack_depth = 0; + + reg_off_ll = -1; + reg_off_macpl = -1; + + switch (linktype) { + + case DLT_ARCNET: + off_linktype = 2; + off_macpl = 6; + off_nl = 0; /* XXX in reality, variable! */ + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; + + case DLT_ARCNET_LINUX: + off_linktype = 4; + off_macpl = 8; + off_nl = 0; /* XXX in reality, variable! */ + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; + + case DLT_EN10MB: + off_linktype = 12; + off_macpl = 14; /* Ethernet header length */ + off_nl = 0; /* Ethernet II */ + off_nl_nosnap = 3; /* 802.3+802.2 */ + return; + + case DLT_SLIP: + /* + * SLIP doesn't have a link level type. The 16 byte + * header is hacked into our SLIP driver. + */ + off_linktype = -1; + off_macpl = 16; + off_nl = 0; + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; + + case DLT_SLIP_BSDOS: + /* XXX this may be the same as the DLT_PPP_BSDOS case */ + off_linktype = -1; + /* XXX end */ + off_macpl = 24; + off_nl = 0; + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; + + case DLT_NULL: + case DLT_LOOP: + off_linktype = 0; + off_macpl = 4; + off_nl = 0; + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; + + case DLT_ENC: + off_linktype = 0; + off_macpl = 12; + off_nl = 0; + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; + + case DLT_PPP: + case DLT_PPP_PPPD: + case DLT_C_HDLC: /* BSD/OS Cisco HDLC */ + case DLT_PPP_SERIAL: /* NetBSD sync/async serial PPP */ + off_linktype = 2; + off_macpl = 4; + off_nl = 0; + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; + + case DLT_PPP_ETHER: + /* + * This does no include the Ethernet header, and + * only covers session state. + */ + off_linktype = 6; + off_macpl = 8; + off_nl = 0; + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; + + case DLT_PPP_BSDOS: + off_linktype = 5; + off_macpl = 24; + off_nl = 0; + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; + + case DLT_FDDI: + /* + * FDDI doesn't really have a link-level type field. + * We set "off_linktype" to the offset of the LLC header. + * + * To check for Ethernet types, we assume that SSAP = SNAP + * is being used and pick out the encapsulated Ethernet type. + * XXX - should we generate code to check for SNAP? + */ + off_linktype = 13; +#ifdef PCAP_FDDIPAD + off_linktype += pcap_fddipad; +#endif + off_macpl = 13; /* FDDI MAC header length */ +#ifdef PCAP_FDDIPAD + off_macpl += pcap_fddipad; +#endif + off_nl = 8; /* 802.2+SNAP */ + off_nl_nosnap = 3; /* 802.2 */ + return; + + case DLT_IEEE802: + /* + * Token Ring doesn't really have a link-level type field. + * We set "off_linktype" to the offset of the LLC header. + * + * To check for Ethernet types, we assume that SSAP = SNAP + * is being used and pick out the encapsulated Ethernet type. + * XXX - should we generate code to check for SNAP? + * + * XXX - the header is actually variable-length. + * Some various Linux patched versions gave 38 + * as "off_linktype" and 40 as "off_nl"; however, + * if a token ring packet has *no* routing + * information, i.e. is not source-routed, the correct + * values are 20 and 22, as they are in the vanilla code. + * + * A packet is source-routed iff the uppermost bit + * of the first byte of the source address, at an + * offset of 8, has the uppermost bit set. If the + * packet is source-routed, the total number of bytes + * of routing information is 2 plus bits 0x1F00 of + * the 16-bit value at an offset of 14 (shifted right + * 8 - figure out which byte that is). + */ + off_linktype = 14; + off_macpl = 14; /* Token Ring MAC header length */ + off_nl = 8; /* 802.2+SNAP */ + off_nl_nosnap = 3; /* 802.2 */ + return; + + case DLT_IEEE802_11: + case DLT_PRISM_HEADER: + case DLT_IEEE802_11_RADIO_AVS: + case DLT_IEEE802_11_RADIO: + /* + * 802.11 doesn't really have a link-level type field. + * We set "off_linktype" to the offset of the LLC header. + * + * To check for Ethernet types, we assume that SSAP = SNAP + * is being used and pick out the encapsulated Ethernet type. + * XXX - should we generate code to check for SNAP? + * + * We also handle variable-length radio headers here. + * The Prism header is in theory variable-length, but in + * practice it's always 144 bytes long. However, some + * drivers on Linux use ARPHRD_IEEE80211_PRISM, but + * sometimes or always supply an AVS header, so we + * have to check whether the radio header is a Prism + * header or an AVS header, so, in practice, it's + * variable-length. + */ + off_linktype = 24; + off_macpl = 0; /* link-layer header is variable-length */ + off_macpl_is_variable = 1; + off_nl = 8; /* 802.2+SNAP */ + off_nl_nosnap = 3; /* 802.2 */ + return; + + case DLT_PPI: + /* + * At the moment we treat PPI the same way that we treat + * normal Radiotap encoded packets. The difference is in + * the function that generates the code at the beginning + * to compute the header length. Since this code generator + * of PPI supports bare 802.11 encapsulation only (i.e. + * the encapsulated DLT should be DLT_IEEE802_11) we + * generate code to check for this too. + */ + off_linktype = 24; + off_macpl = 0; /* link-layer header is variable-length */ + off_macpl_is_variable = 1; + off_nl = 8; /* 802.2+SNAP */ + off_nl_nosnap = 3; /* 802.2 */ + return; + + case DLT_ATM_RFC1483: + case DLT_ATM_CLIP: /* Linux ATM defines this */ + /* + * assume routed, non-ISO PDUs + * (i.e., LLC = 0xAA-AA-03, OUT = 0x00-00-00) + * + * XXX - what about ISO PDUs, e.g. CLNP, ISIS, ESIS, + * or PPP with the PPP NLPID (e.g., PPPoA)? The + * latter would presumably be treated the way PPPoE + * should be, so you can do "pppoe and udp port 2049" + * or "pppoa and tcp port 80" and have it check for + * PPPo{A,E} and a PPP protocol of IP and.... + */ + off_linktype = 0; + off_macpl = 0; /* packet begins with LLC header */ + off_nl = 8; /* 802.2+SNAP */ + off_nl_nosnap = 3; /* 802.2 */ + return; + + case DLT_SUNATM: + /* + * Full Frontal ATM; you get AALn PDUs with an ATM + * pseudo-header. + */ + is_atm = 1; + off_vpi = SUNATM_VPI_POS; + off_vci = SUNATM_VCI_POS; + off_proto = PROTO_POS; + off_mac = -1; /* assume LLC-encapsulated, so no MAC-layer header */ + off_payload = SUNATM_PKT_BEGIN_POS; + off_linktype = off_payload; + off_macpl = off_payload; /* if LLC-encapsulated */ + off_nl = 8; /* 802.2+SNAP */ + off_nl_nosnap = 3; /* 802.2 */ + return; + + case DLT_RAW: + case DLT_IPV4: + case DLT_IPV6: + off_linktype = -1; + off_macpl = 0; + off_nl = 0; + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; + + case DLT_LINUX_SLL: /* fake header for Linux cooked socket */ + off_linktype = 14; + off_macpl = 16; + off_nl = 0; + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; + + case DLT_LTALK: + /* + * LocalTalk does have a 1-byte type field in the LLAP header, + * but really it just indicates whether there is a "short" or + * "long" DDP packet following. + */ + off_linktype = -1; + off_macpl = 0; + off_nl = 0; + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; + + case DLT_IP_OVER_FC: + /* + * RFC 2625 IP-over-Fibre-Channel doesn't really have a + * link-level type field. We set "off_linktype" to the + * offset of the LLC header. + * + * To check for Ethernet types, we assume that SSAP = SNAP + * is being used and pick out the encapsulated Ethernet type. + * XXX - should we generate code to check for SNAP? RFC + * 2625 says SNAP should be used. + */ + off_linktype = 16; + off_macpl = 16; + off_nl = 8; /* 802.2+SNAP */ + off_nl_nosnap = 3; /* 802.2 */ + return; + + case DLT_FRELAY: + /* + * XXX - we should set this to handle SNAP-encapsulated + * frames (NLPID of 0x80). + */ + off_linktype = -1; + off_macpl = 0; + off_nl = 0; + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; + + /* + * the only BPF-interesting FRF.16 frames are non-control frames; + * Frame Relay has a variable length link-layer + * so lets start with offset 4 for now and increments later on (FIXME); + */ + case DLT_MFR: + off_linktype = -1; + off_macpl = 0; + off_nl = 4; + off_nl_nosnap = 0; /* XXX - for now -> no 802.2 LLC */ + return; + + case DLT_APPLE_IP_OVER_IEEE1394: + off_linktype = 16; + off_macpl = 18; + off_nl = 0; + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; + + case DLT_SYMANTEC_FIREWALL: + off_linktype = 6; + off_macpl = 44; + off_nl = 0; /* Ethernet II */ + off_nl_nosnap = 0; /* XXX - what does it do with 802.3 packets? */ + return; + +#ifdef HAVE_NET_PFVAR_H + case DLT_PFLOG: + off_linktype = 0; + off_macpl = PFLOG_HDRLEN; + off_nl = 0; + off_nl_nosnap = 0; /* no 802.2 LLC */ + return; +#endif + + case DLT_JUNIPER_MFR: + case DLT_JUNIPER_MLFR: + case DLT_JUNIPER_MLPPP: + case DLT_JUNIPER_PPP: + case DLT_JUNIPER_CHDLC: + case DLT_JUNIPER_FRELAY: + off_linktype = 4; + off_macpl = 4; + off_nl = 0; + off_nl_nosnap = -1; /* no 802.2 LLC */ + return; + + case DLT_JUNIPER_ATM1: + off_linktype = 4; /* in reality variable between 4-8 */ + off_macpl = 4; /* in reality variable between 4-8 */ + off_nl = 0; + off_nl_nosnap = 10; + return; + + case DLT_JUNIPER_ATM2: + off_linktype = 8; /* in reality variable between 8-12 */ + off_macpl = 8; /* in reality variable between 8-12 */ + off_nl = 0; + off_nl_nosnap = 10; + return; + + /* frames captured on a Juniper PPPoE service PIC + * contain raw ethernet frames */ + case DLT_JUNIPER_PPPOE: + case DLT_JUNIPER_ETHER: + off_macpl = 14; + off_linktype = 16; + off_nl = 18; /* Ethernet II */ + off_nl_nosnap = 21; /* 802.3+802.2 */ + return; + + case DLT_JUNIPER_PPPOE_ATM: + off_linktype = 4; + off_macpl = 6; + off_nl = 0; + off_nl_nosnap = -1; /* no 802.2 LLC */ + return; + + case DLT_JUNIPER_GGSN: + off_linktype = 6; + off_macpl = 12; + off_nl = 0; + off_nl_nosnap = -1; /* no 802.2 LLC */ + return; + + case DLT_JUNIPER_ES: + off_linktype = 6; + off_macpl = -1; /* not really a network layer but raw IP addresses */ + off_nl = -1; /* not really a network layer but raw IP addresses */ + off_nl_nosnap = -1; /* no 802.2 LLC */ + return; + + case DLT_JUNIPER_MONITOR: + off_linktype = 12; + off_macpl = 12; + off_nl = 0; /* raw IP/IP6 header */ + off_nl_nosnap = -1; /* no 802.2 LLC */ + return; + + case DLT_JUNIPER_SERVICES: + off_linktype = 12; + off_macpl = -1; /* L3 proto location dep. on cookie type */ + off_nl = -1; /* L3 proto location dep. on cookie type */ + off_nl_nosnap = -1; /* no 802.2 LLC */ + return; + + case DLT_JUNIPER_VP: + off_linktype = 18; + off_macpl = -1; + off_nl = -1; + off_nl_nosnap = -1; + return; + + case DLT_JUNIPER_ST: + off_linktype = 18; + off_macpl = -1; + off_nl = -1; + off_nl_nosnap = -1; + return; + + case DLT_JUNIPER_ISM: + off_linktype = 8; + off_macpl = -1; + off_nl = -1; + off_nl_nosnap = -1; + return; + + case DLT_JUNIPER_VS: + case DLT_JUNIPER_SRX_E2E: + case DLT_JUNIPER_FIBRECHANNEL: + case DLT_JUNIPER_ATM_CEMIC: + off_linktype = 8; + off_macpl = -1; + off_nl = -1; + off_nl_nosnap = -1; + return; + + case DLT_MTP2: + off_li = 2; + off_sio = 3; + off_opc = 4; + off_dpc = 4; + off_sls = 7; + off_linktype = -1; + off_macpl = -1; + off_nl = -1; + off_nl_nosnap = -1; + return; + + case DLT_MTP2_WITH_PHDR: + off_li = 6; + off_sio = 7; + off_opc = 8; + off_dpc = 8; + off_sls = 11; + off_linktype = -1; + off_macpl = -1; + off_nl = -1; + off_nl_nosnap = -1; + return; + + case DLT_ERF: + off_li = 22; + off_sio = 23; + off_opc = 24; + off_dpc = 24; + off_sls = 27; + off_linktype = -1; + off_macpl = -1; + off_nl = -1; + off_nl_nosnap = -1; + return; + + case DLT_PFSYNC: + off_linktype = -1; + off_macpl = 4; + off_nl = 0; + off_nl_nosnap = 0; + return; + + case DLT_AX25_KISS: + /* + * Currently, only raw "link[N:M]" filtering is supported. + */ + off_linktype = -1; /* variable, min 15, max 71 steps of 7 */ + off_macpl = -1; + off_nl = -1; /* variable, min 16, max 71 steps of 7 */ + off_nl_nosnap = -1; /* no 802.2 LLC */ + off_mac = 1; /* step over the kiss length byte */ + return; + + case DLT_IPNET: + off_linktype = 1; + off_macpl = 24; /* ipnet header length */ + off_nl = 0; + off_nl_nosnap = -1; + return; + + case DLT_NETANALYZER: + off_mac = 4; /* MAC header is past 4-byte pseudo-header */ + off_linktype = 16; /* includes 4-byte pseudo-header */ + off_macpl = 18; /* pseudo-header+Ethernet header length */ + off_nl = 0; /* Ethernet II */ + off_nl_nosnap = 3; /* 802.3+802.2 */ + return; + + case DLT_NETANALYZER_TRANSPARENT: + off_mac = 12; /* MAC header is past 4-byte pseudo-header, preamble, and SFD */ + off_linktype = 24; /* includes 4-byte pseudo-header+preamble+SFD */ + off_macpl = 26; /* pseudo-header+preamble+SFD+Ethernet header length */ + off_nl = 0; /* Ethernet II */ + off_nl_nosnap = 3; /* 802.3+802.2 */ + return; + + default: + /* + * For values in the range in which we've assigned new + * DLT_ values, only raw "link[N:M]" filtering is supported. + */ + if (linktype >= DLT_MATCHING_MIN && + linktype <= DLT_MATCHING_MAX) { + off_linktype = -1; + off_macpl = -1; + off_nl = -1; + off_nl_nosnap = -1; + return; + } + + } + bpf_error("unknown data link type %d", linktype); + /* NOTREACHED */ +} + +/* + * Load a value relative to the beginning of the link-layer header. + * The link-layer header doesn't necessarily begin at the beginning + * of the packet data; there might be a variable-length prefix containing + * radio information. + */ +static struct slist * +gen_load_llrel(offset, size) + u_int offset, size; +{ + struct slist *s, *s2; + + s = gen_llprefixlen(); + + /* + * If "s" is non-null, it has code to arrange that the X register + * contains the length of the prefix preceding the link-layer + * header. + * + * Otherwise, the length of the prefix preceding the link-layer + * header is "off_ll". + */ + if (s != NULL) { + /* + * There's a variable-length prefix preceding the + * link-layer header. "s" points to a list of statements + * that put the length of that prefix into the X register. + * do an indirect load, to use the X register as an offset. + */ + s2 = new_stmt(BPF_LD|BPF_IND|size); + s2->s.k = offset; + sappend(s, s2); + } else { + /* + * There is no variable-length header preceding the + * link-layer header; add in off_ll, which, if there's + * a fixed-length header preceding the link-layer header, + * is the length of that header. + */ + s = new_stmt(BPF_LD|BPF_ABS|size); + s->s.k = offset + off_ll; + } + return s; +} + +/* + * Load a value relative to the beginning of the MAC-layer payload. + */ +static struct slist * +gen_load_macplrel(offset, size) + u_int offset, size; +{ + struct slist *s, *s2; + + s = gen_off_macpl(); + + /* + * If s is non-null, the offset of the MAC-layer payload is + * variable, and s points to a list of instructions that + * arrange that the X register contains that offset. + * + * Otherwise, the offset of the MAC-layer payload is constant, + * and is in off_macpl. + */ + if (s != NULL) { + /* + * The offset of the MAC-layer payload is in the X + * register. Do an indirect load, to use the X register + * as an offset. + */ + s2 = new_stmt(BPF_LD|BPF_IND|size); + s2->s.k = offset; + sappend(s, s2); + } else { + /* + * The offset of the MAC-layer payload is constant, + * and is in off_macpl; load the value at that offset + * plus the specified offset. + */ + s = new_stmt(BPF_LD|BPF_ABS|size); + s->s.k = off_macpl + offset; + } + return s; +} + +/* + * Load a value relative to the beginning of the specified header. + */ +static struct slist * +gen_load_a(offrel, offset, size) + enum e_offrel offrel; + u_int offset, size; +{ + struct slist *s, *s2; + + switch (offrel) { + + case OR_PACKET: + s = new_stmt(BPF_LD|BPF_ABS|size); + s->s.k = offset; + break; + + case OR_LINK: + s = gen_load_llrel(offset, size); + break; + + case OR_MACPL: + s = gen_load_macplrel(offset, size); + break; + + case OR_NET: + s = gen_load_macplrel(off_nl + offset, size); + break; + + case OR_NET_NOSNAP: + s = gen_load_macplrel(off_nl_nosnap + offset, size); + break; + + case OR_TRAN_IPV4: + /* + * Load the X register with the length of the IPv4 header + * (plus the offset of the link-layer header, if it's + * preceded by a variable-length header such as a radio + * header), in bytes. + */ + s = gen_loadx_iphdrlen(); + + /* + * Load the item at {offset of the MAC-layer payload} + + * {offset, relative to the start of the MAC-layer + * paylod, of the IPv4 header} + {length of the IPv4 header} + + * {specified offset}. + * + * (If the offset of the MAC-layer payload is variable, + * it's included in the value in the X register, and + * off_macpl is 0.) + */ + s2 = new_stmt(BPF_LD|BPF_IND|size); + s2->s.k = off_macpl + off_nl + offset; + sappend(s, s2); + break; + + case OR_TRAN_IPV6: + s = gen_load_macplrel(off_nl + 40 + offset, size); + break; + + default: + abort(); + return NULL; + } + return s; +} + +/* + * Generate code to load into the X register the sum of the length of + * the IPv4 header and any variable-length header preceding the link-layer + * header. + */ +static struct slist * +gen_loadx_iphdrlen() +{ + struct slist *s, *s2; + + s = gen_off_macpl(); + if (s != NULL) { + /* + * There's a variable-length prefix preceding the + * link-layer header, or the link-layer header is itself + * variable-length. "s" points to a list of statements + * that put the offset of the MAC-layer payload into + * the X register. + * + * The 4*([k]&0xf) addressing mode can't be used, as we + * don't have a constant offset, so we have to load the + * value in question into the A register and add to it + * the value from the X register. + */ + s2 = new_stmt(BPF_LD|BPF_IND|BPF_B); + s2->s.k = off_nl; + sappend(s, s2); + s2 = new_stmt(BPF_ALU|BPF_AND|BPF_K); + s2->s.k = 0xf; + sappend(s, s2); + s2 = new_stmt(BPF_ALU|BPF_LSH|BPF_K); + s2->s.k = 2; + sappend(s, s2); + + /* + * The A register now contains the length of the + * IP header. We need to add to it the offset of + * the MAC-layer payload, which is still in the X + * register, and move the result into the X register. + */ + sappend(s, new_stmt(BPF_ALU|BPF_ADD|BPF_X)); + sappend(s, new_stmt(BPF_MISC|BPF_TAX)); + } else { + /* + * There is no variable-length header preceding the + * link-layer header, and the link-layer header is + * fixed-length; load the length of the IPv4 header, + * which is at an offset of off_nl from the beginning + * of the MAC-layer payload, and thus at an offset + * of off_mac_pl + off_nl from the beginning of the + * raw packet data. + */ + s = new_stmt(BPF_LDX|BPF_MSH|BPF_B); + s->s.k = off_macpl + off_nl; + } + return s; +} + +static struct block * +gen_uncond(rsense) + int rsense; +{ + struct block *b; + struct slist *s; + + s = new_stmt(BPF_LD|BPF_IMM); + s->s.k = !rsense; + b = new_block(JMP(BPF_JEQ)); + b->stmts = s; + + return b; +} + +static inline struct block * +gen_true() +{ + return gen_uncond(1); +} + +static inline struct block * +gen_false() +{ + return gen_uncond(0); +} + +/* + * Byte-swap a 32-bit number. + * ("htonl()" or "ntohl()" won't work - we want to byte-swap even on + * big-endian platforms.) + */ +#define SWAPLONG(y) \ +((((y)&0xff)<<24) | (((y)&0xff00)<<8) | (((y)&0xff0000)>>8) | (((y)>>24)&0xff)) + +/* + * Generate code to match a particular packet type. + * + * "proto" is an Ethernet type value, if > ETHERMTU, or an LLC SAP + * value, if <= ETHERMTU. We use that to determine whether to + * match the type/length field or to check the type/length field for + * a value <= ETHERMTU to see whether it's a type field and then do + * the appropriate test. + */ +static struct block * +gen_ether_linktype(proto) + register int proto; +{ + struct block *b0, *b1; + + switch (proto) { + + case LLCSAP_ISONS: + case LLCSAP_IP: + case LLCSAP_NETBEUI: + /* + * OSI protocols and NetBEUI always use 802.2 encapsulation, + * so we check the DSAP and SSAP. + * + * LLCSAP_IP checks for IP-over-802.2, rather + * than IP-over-Ethernet or IP-over-SNAP. + * + * XXX - should we check both the DSAP and the + * SSAP, like this, or should we check just the + * DSAP, as we do for other types <= ETHERMTU + * (i.e., other SAP values)? + */ + b0 = gen_cmp_gt(OR_LINK, off_linktype, BPF_H, ETHERMTU); + gen_not(b0); + b1 = gen_cmp(OR_MACPL, 0, BPF_H, (bpf_int32) + ((proto << 8) | proto)); + gen_and(b0, b1); + return b1; + + case LLCSAP_IPX: + /* + * Check for; + * + * Ethernet_II frames, which are Ethernet + * frames with a frame type of ETHERTYPE_IPX; + * + * Ethernet_802.3 frames, which are 802.3 + * frames (i.e., the type/length field is + * a length field, <= ETHERMTU, rather than + * a type field) with the first two bytes + * after the Ethernet/802.3 header being + * 0xFFFF; + * + * Ethernet_802.2 frames, which are 802.3 + * frames with an 802.2 LLC header and + * with the IPX LSAP as the DSAP in the LLC + * header; + * + * Ethernet_SNAP frames, which are 802.3 + * frames with an LLC header and a SNAP + * header and with an OUI of 0x000000 + * (encapsulated Ethernet) and a protocol + * ID of ETHERTYPE_IPX in the SNAP header. + * + * XXX - should we generate the same code both + * for tests for LLCSAP_IPX and for ETHERTYPE_IPX? + */ + + /* + * This generates code to check both for the + * IPX LSAP (Ethernet_802.2) and for Ethernet_802.3. + */ + b0 = gen_cmp(OR_MACPL, 0, BPF_B, (bpf_int32)LLCSAP_IPX); + b1 = gen_cmp(OR_MACPL, 0, BPF_H, (bpf_int32)0xFFFF); + gen_or(b0, b1); + + /* + * Now we add code to check for SNAP frames with + * ETHERTYPE_IPX, i.e. Ethernet_SNAP. + */ + b0 = gen_snap(0x000000, ETHERTYPE_IPX); + gen_or(b0, b1); + + /* + * Now we generate code to check for 802.3 + * frames in general. + */ + b0 = gen_cmp_gt(OR_LINK, off_linktype, BPF_H, ETHERMTU); + gen_not(b0); + + /* + * Now add the check for 802.3 frames before the + * check for Ethernet_802.2 and Ethernet_802.3, + * as those checks should only be done on 802.3 + * frames, not on Ethernet frames. + */ + gen_and(b0, b1); + + /* + * Now add the check for Ethernet_II frames, and + * do that before checking for the other frame + * types. + */ + b0 = gen_cmp(OR_LINK, off_linktype, BPF_H, + (bpf_int32)ETHERTYPE_IPX); + gen_or(b0, b1); + return b1; + + case ETHERTYPE_ATALK: + case ETHERTYPE_AARP: + /* + * EtherTalk (AppleTalk protocols on Ethernet link + * layer) may use 802.2 encapsulation. + */ + + /* + * Check for 802.2 encapsulation (EtherTalk phase 2?); + * we check for an Ethernet type field less than + * 1500, which means it's an 802.3 length field. + */ + b0 = gen_cmp_gt(OR_LINK, off_linktype, BPF_H, ETHERMTU); + gen_not(b0); + + /* + * 802.2-encapsulated ETHERTYPE_ATALK packets are + * SNAP packets with an organization code of + * 0x080007 (Apple, for Appletalk) and a protocol + * type of ETHERTYPE_ATALK (Appletalk). + * + * 802.2-encapsulated ETHERTYPE_AARP packets are + * SNAP packets with an organization code of + * 0x000000 (encapsulated Ethernet) and a protocol + * type of ETHERTYPE_AARP (Appletalk ARP). + */ + if (proto == ETHERTYPE_ATALK) + b1 = gen_snap(0x080007, ETHERTYPE_ATALK); + else /* proto == ETHERTYPE_AARP */ + b1 = gen_snap(0x000000, ETHERTYPE_AARP); + gen_and(b0, b1); + + /* + * Check for Ethernet encapsulation (Ethertalk + * phase 1?); we just check for the Ethernet + * protocol type. + */ + b0 = gen_cmp(OR_LINK, off_linktype, BPF_H, (bpf_int32)proto); + + gen_or(b0, b1); + return b1; + + default: + if (proto <= ETHERMTU) { + /* + * This is an LLC SAP value, so the frames + * that match would be 802.2 frames. + * Check that the frame is an 802.2 frame + * (i.e., that the length/type field is + * a length field, <= ETHERMTU) and + * then check the DSAP. + */ + b0 = gen_cmp_gt(OR_LINK, off_linktype, BPF_H, ETHERMTU); + gen_not(b0); + b1 = gen_cmp(OR_LINK, off_linktype + 2, BPF_B, + (bpf_int32)proto); + gen_and(b0, b1); + return b1; + } else { + /* + * This is an Ethernet type, so compare + * the length/type field with it (if + * the frame is an 802.2 frame, the length + * field will be <= ETHERMTU, and, as + * "proto" is > ETHERMTU, this test + * will fail and the frame won't match, + * which is what we want). + */ + return gen_cmp(OR_LINK, off_linktype, BPF_H, + (bpf_int32)proto); + } + } +} + +/* + * "proto" is an Ethernet type value and for IPNET, if it is not IPv4 + * or IPv6 then we have an error. + */ +static struct block * +gen_ipnet_linktype(proto) + register int proto; +{ + switch (proto) { + + case ETHERTYPE_IP: + return gen_cmp(OR_LINK, off_linktype, BPF_B, + (bpf_int32)IPH_AF_INET); + /* NOTREACHED */ + + case ETHERTYPE_IPV6: + return gen_cmp(OR_LINK, off_linktype, BPF_B, + (bpf_int32)IPH_AF_INET6); + /* NOTREACHED */ + + default: + break; + } + + return gen_false(); +} + +/* + * Generate code to match a particular packet type. + * + * "proto" is an Ethernet type value, if > ETHERMTU, or an LLC SAP + * value, if <= ETHERMTU. We use that to determine whether to + * match the type field or to check the type field for the special + * LINUX_SLL_P_802_2 value and then do the appropriate test. + */ +static struct block * +gen_linux_sll_linktype(proto) + register int proto; +{ + struct block *b0, *b1; + + switch (proto) { + + case LLCSAP_ISONS: + case LLCSAP_IP: + case LLCSAP_NETBEUI: + /* + * OSI protocols and NetBEUI always use 802.2 encapsulation, + * so we check the DSAP and SSAP. + * + * LLCSAP_IP checks for IP-over-802.2, rather + * than IP-over-Ethernet or IP-over-SNAP. + * + * XXX - should we check both the DSAP and the + * SSAP, like this, or should we check just the + * DSAP, as we do for other types <= ETHERMTU + * (i.e., other SAP values)? + */ + b0 = gen_cmp(OR_LINK, off_linktype, BPF_H, LINUX_SLL_P_802_2); + b1 = gen_cmp(OR_MACPL, 0, BPF_H, (bpf_int32) + ((proto << 8) | proto)); + gen_and(b0, b1); + return b1; + + case LLCSAP_IPX: + /* + * Ethernet_II frames, which are Ethernet + * frames with a frame type of ETHERTYPE_IPX; + * + * Ethernet_802.3 frames, which have a frame + * type of LINUX_SLL_P_802_3; + * + * Ethernet_802.2 frames, which are 802.3 + * frames with an 802.2 LLC header (i.e, have + * a frame type of LINUX_SLL_P_802_2) and + * with the IPX LSAP as the DSAP in the LLC + * header; + * + * Ethernet_SNAP frames, which are 802.3 + * frames with an LLC header and a SNAP + * header and with an OUI of 0x000000 + * (encapsulated Ethernet) and a protocol + * ID of ETHERTYPE_IPX in the SNAP header. + * + * First, do the checks on LINUX_SLL_P_802_2 + * frames; generate the check for either + * Ethernet_802.2 or Ethernet_SNAP frames, and + * then put a check for LINUX_SLL_P_802_2 frames + * before it. + */ + b0 = gen_cmp(OR_MACPL, 0, BPF_B, (bpf_int32)LLCSAP_IPX); + b1 = gen_snap(0x000000, ETHERTYPE_IPX); + gen_or(b0, b1); + b0 = gen_cmp(OR_LINK, off_linktype, BPF_H, LINUX_SLL_P_802_2); + gen_and(b0, b1); + + /* + * Now check for 802.3 frames and OR that with + * the previous test. + */ + b0 = gen_cmp(OR_LINK, off_linktype, BPF_H, LINUX_SLL_P_802_3); + gen_or(b0, b1); + + /* + * Now add the check for Ethernet_II frames, and + * do that before checking for the other frame + * types. + */ + b0 = gen_cmp(OR_LINK, off_linktype, BPF_H, + (bpf_int32)ETHERTYPE_IPX); + gen_or(b0, b1); + return b1; + + case ETHERTYPE_ATALK: + case ETHERTYPE_AARP: + /* + * EtherTalk (AppleTalk protocols on Ethernet link + * layer) may use 802.2 encapsulation. + */ + + /* + * Check for 802.2 encapsulation (EtherTalk phase 2?); + * we check for the 802.2 protocol type in the + * "Ethernet type" field. + */ + b0 = gen_cmp(OR_LINK, off_linktype, BPF_H, LINUX_SLL_P_802_2); + + /* + * 802.2-encapsulated ETHERTYPE_ATALK packets are + * SNAP packets with an organization code of + * 0x080007 (Apple, for Appletalk) and a protocol + * type of ETHERTYPE_ATALK (Appletalk). + * + * 802.2-encapsulated ETHERTYPE_AARP packets are + * SNAP packets with an organization code of + * 0x000000 (encapsulated Ethernet) and a protocol + * type of ETHERTYPE_AARP (Appletalk ARP). + */ + if (proto == ETHERTYPE_ATALK) + b1 = gen_snap(0x080007, ETHERTYPE_ATALK); + else /* proto == ETHERTYPE_AARP */ + b1 = gen_snap(0x000000, ETHERTYPE_AARP); + gen_and(b0, b1); + + /* + * Check for Ethernet encapsulation (Ethertalk + * phase 1?); we just check for the Ethernet + * protocol type. + */ + b0 = gen_cmp(OR_LINK, off_linktype, BPF_H, (bpf_int32)proto); + + gen_or(b0, b1); + return b1; + + default: + if (proto <= ETHERMTU) { + /* + * This is an LLC SAP value, so the frames + * that match would be 802.2 frames. + * Check for the 802.2 protocol type + * in the "Ethernet type" field, and + * then check the DSAP. + */ + b0 = gen_cmp(OR_LINK, off_linktype, BPF_H, + LINUX_SLL_P_802_2); + b1 = gen_cmp(OR_LINK, off_macpl, BPF_B, + (bpf_int32)proto); + gen_and(b0, b1); + return b1; + } else { + /* + * This is an Ethernet type, so compare + * the length/type field with it (if + * the frame is an 802.2 frame, the length + * field will be <= ETHERMTU, and, as + * "proto" is > ETHERMTU, this test + * will fail and the frame won't match, + * which is what we want). + */ + return gen_cmp(OR_LINK, off_linktype, BPF_H, + (bpf_int32)proto); + } + } +} + +static struct slist * +gen_load_prism_llprefixlen() +{ + struct slist *s1, *s2; + struct slist *sjeq_avs_cookie; + struct slist *sjcommon; + + /* + * This code is not compatible with the optimizer, as + * we are generating jmp instructions within a normal + * slist of instructions + */ + no_optimize = 1; + + /* + * Generate code to load the length of the radio header into + * the register assigned to hold that length, if one has been + * assigned. (If one hasn't been assigned, no code we've + * generated uses that prefix, so we don't need to generate any + * code to load it.) + * + * Some Linux drivers use ARPHRD_IEEE80211_PRISM but sometimes + * or always use the AVS header rather than the Prism header. + * We load a 4-byte big-endian value at the beginning of the + * raw packet data, and see whether, when masked with 0xFFFFF000, + * it's equal to 0x80211000. If so, that indicates that it's + * an AVS header (the masked-out bits are the version number). + * Otherwise, it's a Prism header. + * + * XXX - the Prism header is also, in theory, variable-length, + * but no known software generates headers that aren't 144 + * bytes long. + */ + if (reg_off_ll != -1) { + /* + * Load the cookie. + */ + s1 = new_stmt(BPF_LD|BPF_W|BPF_ABS); + s1->s.k = 0; + + /* + * AND it with 0xFFFFF000. + */ + s2 = new_stmt(BPF_ALU|BPF_AND|BPF_K); + s2->s.k = 0xFFFFF000; + sappend(s1, s2); + + /* + * Compare with 0x80211000. + */ + sjeq_avs_cookie = new_stmt(JMP(BPF_JEQ)); + sjeq_avs_cookie->s.k = 0x80211000; + sappend(s1, sjeq_avs_cookie); + + /* + * If it's AVS: + * + * The 4 bytes at an offset of 4 from the beginning of + * the AVS header are the length of the AVS header. + * That field is big-endian. + */ + s2 = new_stmt(BPF_LD|BPF_W|BPF_ABS); + s2->s.k = 4; + sappend(s1, s2); + sjeq_avs_cookie->s.jt = s2; + + /* + * Now jump to the code to allocate a register + * into which to save the header length and + * store the length there. (The "jump always" + * instruction needs to have the k field set; + * it's added to the PC, so, as we're jumping + * over a single instruction, it should be 1.) + */ + sjcommon = new_stmt(JMP(BPF_JA)); + sjcommon->s.k = 1; + sappend(s1, sjcommon); + + /* + * Now for the code that handles the Prism header. + * Just load the length of the Prism header (144) + * into the A register. Have the test for an AVS + * header branch here if we don't have an AVS header. + */ + s2 = new_stmt(BPF_LD|BPF_W|BPF_IMM); + s2->s.k = 144; + sappend(s1, s2); + sjeq_avs_cookie->s.jf = s2; + + /* + * Now allocate a register to hold that value and store + * it. The code for the AVS header will jump here after + * loading the length of the AVS header. + */ + s2 = new_stmt(BPF_ST); + s2->s.k = reg_off_ll; + sappend(s1, s2); + sjcommon->s.jf = s2; + + /* + * Now move it into the X register. + */ + s2 = new_stmt(BPF_MISC|BPF_TAX); + sappend(s1, s2); + + return (s1); + } else + return (NULL); +} + +static struct slist * +gen_load_avs_llprefixlen() +{ + struct slist *s1, *s2; + + /* + * Generate code to load the length of the AVS header into + * the register assigned to hold that length, if one has been + * assigned. (If one hasn't been assigned, no code we've + * generated uses that prefix, so we don't need to generate any + * code to load it.) + */ + if (reg_off_ll != -1) { + /* + * The 4 bytes at an offset of 4 from the beginning of + * the AVS header are the length of the AVS header. + * That field is big-endian. + */ + s1 = new_stmt(BPF_LD|BPF_W|BPF_ABS); + s1->s.k = 4; + + /* + * Now allocate a register to hold that value and store + * it. + */ + s2 = new_stmt(BPF_ST); + s2->s.k = reg_off_ll; + sappend(s1, s2); + + /* + * Now move it into the X register. + */ + s2 = new_stmt(BPF_MISC|BPF_TAX); + sappend(s1, s2); + + return (s1); + } else + return (NULL); +} + +static struct slist * +gen_load_radiotap_llprefixlen() +{ + struct slist *s1, *s2; + + /* + * Generate code to load the length of the radiotap header into + * the register assigned to hold that length, if one has been + * assigned. (If one hasn't been assigned, no code we've + * generated uses that prefix, so we don't need to generate any + * code to load it.) + */ + if (reg_off_ll != -1) { + /* + * The 2 bytes at offsets of 2 and 3 from the beginning + * of the radiotap header are the length of the radiotap + * header; unfortunately, it's little-endian, so we have + * to load it a byte at a time and construct the value. + */ + + /* + * Load the high-order byte, at an offset of 3, shift it + * left a byte, and put the result in the X register. + */ + s1 = new_stmt(BPF_LD|BPF_B|BPF_ABS); + s1->s.k = 3; + s2 = new_stmt(BPF_ALU|BPF_LSH|BPF_K); + sappend(s1, s2); + s2->s.k = 8; + s2 = new_stmt(BPF_MISC|BPF_TAX); + sappend(s1, s2); + + /* + * Load the next byte, at an offset of 2, and OR the + * value from the X register into it. + */ + s2 = new_stmt(BPF_LD|BPF_B|BPF_ABS); + sappend(s1, s2); + s2->s.k = 2; + s2 = new_stmt(BPF_ALU|BPF_OR|BPF_X); + sappend(s1, s2); + + /* + * Now allocate a register to hold that value and store + * it. + */ + s2 = new_stmt(BPF_ST); + s2->s.k = reg_off_ll; + sappend(s1, s2); + + /* + * Now move it into the X register. + */ + s2 = new_stmt(BPF_MISC|BPF_TAX); + sappend(s1, s2); + + return (s1); + } else + return (NULL); +} + +/* + * At the moment we treat PPI as normal Radiotap encoded + * packets. The difference is in the function that generates + * the code at the beginning to compute the header length. + * Since this code generator of PPI supports bare 802.11 + * encapsulation only (i.e. the encapsulated DLT should be + * DLT_IEEE802_11) we generate code to check for this too; + * that's done in finish_parse(). + */ +static struct slist * +gen_load_ppi_llprefixlen() +{ + struct slist *s1, *s2; + + /* + * Generate code to load the length of the radiotap header + * into the register assigned to hold that length, if one has + * been assigned. + */ + if (reg_off_ll != -1) { + /* + * The 2 bytes at offsets of 2 and 3 from the beginning + * of the radiotap header are the length of the radiotap + * header; unfortunately, it's little-endian, so we have + * to load it a byte at a time and construct the value. + */ + + /* + * Load the high-order byte, at an offset of 3, shift it + * left a byte, and put the result in the X register. + */ + s1 = new_stmt(BPF_LD|BPF_B|BPF_ABS); + s1->s.k = 3; + s2 = new_stmt(BPF_ALU|BPF_LSH|BPF_K); + sappend(s1, s2); + s2->s.k = 8; + s2 = new_stmt(BPF_MISC|BPF_TAX); + sappend(s1, s2); + + /* + * Load the next byte, at an offset of 2, and OR the + * value from the X register into it. + */ + s2 = new_stmt(BPF_LD|BPF_B|BPF_ABS); + sappend(s1, s2); + s2->s.k = 2; + s2 = new_stmt(BPF_ALU|BPF_OR|BPF_X); + sappend(s1, s2); + + /* + * Now allocate a register to hold that value and store + * it. + */ + s2 = new_stmt(BPF_ST); + s2->s.k = reg_off_ll; + sappend(s1, s2); + + /* + * Now move it into the X register. + */ + s2 = new_stmt(BPF_MISC|BPF_TAX); + sappend(s1, s2); + + return (s1); + } else + return (NULL); +} + +/* + * Load a value relative to the beginning of the link-layer header after the 802.11 + * header, i.e. LLC_SNAP. + * The link-layer header doesn't necessarily begin at the beginning + * of the packet data; there might be a variable-length prefix containing + * radio information. + */ +static struct slist * +gen_load_802_11_header_len(struct slist *s, struct slist *snext) +{ + struct slist *s2; + struct slist *sjset_data_frame_1; + struct slist *sjset_data_frame_2; + struct slist *sjset_qos; + struct slist *sjset_radiotap_flags; + struct slist *sjset_radiotap_tsft; + struct slist *sjset_tsft_datapad, *sjset_notsft_datapad; + struct slist *s_roundup; + + if (reg_off_macpl == -1) { + /* + * No register has been assigned to the offset of + * the MAC-layer payload, which means nobody needs + * it; don't bother computing it - just return + * what we already have. + */ + return (s); + } + + /* + * This code is not compatible with the optimizer, as + * we are generating jmp instructions within a normal + * slist of instructions + */ + no_optimize = 1; + + /* + * If "s" is non-null, it has code to arrange that the X register + * contains the length of the prefix preceding the link-layer + * header. + * + * Otherwise, the length of the prefix preceding the link-layer + * header is "off_ll". + */ + if (s == NULL) { + /* + * There is no variable-length header preceding the + * link-layer header. + * + * Load the length of the fixed-length prefix preceding + * the link-layer header (if any) into the X register, + * and store it in the reg_off_macpl register. + * That length is off_ll. + */ + s = new_stmt(BPF_LDX|BPF_IMM); + s->s.k = off_ll; + } + + /* + * The X register contains the offset of the beginning of the + * link-layer header; add 24, which is the minimum length + * of the MAC header for a data frame, to that, and store it + * in reg_off_macpl, and then load the Frame Control field, + * which is at the offset in the X register, with an indexed load. + */ + s2 = new_stmt(BPF_MISC|BPF_TXA); + sappend(s, s2); + s2 = new_stmt(BPF_ALU|BPF_ADD|BPF_K); + s2->s.k = 24; + sappend(s, s2); + s2 = new_stmt(BPF_ST); + s2->s.k = reg_off_macpl; + sappend(s, s2); + + s2 = new_stmt(BPF_LD|BPF_IND|BPF_B); + s2->s.k = 0; + sappend(s, s2); + + /* + * Check the Frame Control field to see if this is a data frame; + * a data frame has the 0x08 bit (b3) in that field set and the + * 0x04 bit (b2) clear. + */ + sjset_data_frame_1 = new_stmt(JMP(BPF_JSET)); + sjset_data_frame_1->s.k = 0x08; + sappend(s, sjset_data_frame_1); + + /* + * If b3 is set, test b2, otherwise go to the first statement of + * the rest of the program. + */ + sjset_data_frame_1->s.jt = sjset_data_frame_2 = new_stmt(JMP(BPF_JSET)); + sjset_data_frame_2->s.k = 0x04; + sappend(s, sjset_data_frame_2); + sjset_data_frame_1->s.jf = snext; + + /* + * If b2 is not set, this is a data frame; test the QoS bit. + * Otherwise, go to the first statement of the rest of the + * program. + */ + sjset_data_frame_2->s.jt = snext; + sjset_data_frame_2->s.jf = sjset_qos = new_stmt(JMP(BPF_JSET)); + sjset_qos->s.k = 0x80; /* QoS bit */ + sappend(s, sjset_qos); + + /* + * If it's set, add 2 to reg_off_macpl, to skip the QoS + * field. + * Otherwise, go to the first statement of the rest of the + * program. + */ + sjset_qos->s.jt = s2 = new_stmt(BPF_LD|BPF_MEM); + s2->s.k = reg_off_macpl; + sappend(s, s2); + s2 = new_stmt(BPF_ALU|BPF_ADD|BPF_IMM); + s2->s.k = 2; + sappend(s, s2); + s2 = new_stmt(BPF_ST); + s2->s.k = reg_off_macpl; + sappend(s, s2); + + /* + * If we have a radiotap header, look at it to see whether + * there's Atheros padding between the MAC-layer header + * and the payload. + * + * Note: all of the fields in the radiotap header are + * little-endian, so we byte-swap all of the values + * we test against, as they will be loaded as big-endian + * values. + */ + if (linktype == DLT_IEEE802_11_RADIO) { + /* + * Is the IEEE80211_RADIOTAP_FLAGS bit (0x0000002) set + * in the presence flag? + */ + sjset_qos->s.jf = s2 = new_stmt(BPF_LD|BPF_ABS|BPF_W); + s2->s.k = 4; + sappend(s, s2); + + sjset_radiotap_flags = new_stmt(JMP(BPF_JSET)); + sjset_radiotap_flags->s.k = SWAPLONG(0x00000002); + sappend(s, sjset_radiotap_flags); + + /* + * If not, skip all of this. + */ + sjset_radiotap_flags->s.jf = snext; + + /* + * Otherwise, is the IEEE80211_RADIOTAP_TSFT bit set? + */ + sjset_radiotap_tsft = sjset_radiotap_flags->s.jt = + new_stmt(JMP(BPF_JSET)); + sjset_radiotap_tsft->s.k = SWAPLONG(0x00000001); + sappend(s, sjset_radiotap_tsft); + + /* + * If IEEE80211_RADIOTAP_TSFT is set, the flags field is + * at an offset of 16 from the beginning of the raw packet + * data (8 bytes for the radiotap header and 8 bytes for + * the TSFT field). + * + * Test whether the IEEE80211_RADIOTAP_F_DATAPAD bit (0x20) + * is set. + */ + sjset_radiotap_tsft->s.jt = s2 = new_stmt(BPF_LD|BPF_ABS|BPF_B); + s2->s.k = 16; + sappend(s, s2); + + sjset_tsft_datapad = new_stmt(JMP(BPF_JSET)); + sjset_tsft_datapad->s.k = 0x20; + sappend(s, sjset_tsft_datapad); + + /* + * If IEEE80211_RADIOTAP_TSFT is not set, the flags field is + * at an offset of 8 from the beginning of the raw packet + * data (8 bytes for the radiotap header). + * + * Test whether the IEEE80211_RADIOTAP_F_DATAPAD bit (0x20) + * is set. + */ + sjset_radiotap_tsft->s.jf = s2 = new_stmt(BPF_LD|BPF_ABS|BPF_B); + s2->s.k = 8; + sappend(s, s2); + + sjset_notsft_datapad = new_stmt(JMP(BPF_JSET)); + sjset_notsft_datapad->s.k = 0x20; + sappend(s, sjset_notsft_datapad); + + /* + * In either case, if IEEE80211_RADIOTAP_F_DATAPAD is + * set, round the length of the 802.11 header to + * a multiple of 4. Do that by adding 3 and then + * dividing by and multiplying by 4, which we do by + * ANDing with ~3. + */ + s_roundup = new_stmt(BPF_LD|BPF_MEM); + s_roundup->s.k = reg_off_macpl; + sappend(s, s_roundup); + s2 = new_stmt(BPF_ALU|BPF_ADD|BPF_IMM); + s2->s.k = 3; + sappend(s, s2); + s2 = new_stmt(BPF_ALU|BPF_AND|BPF_IMM); + s2->s.k = ~3; + sappend(s, s2); + s2 = new_stmt(BPF_ST); + s2->s.k = reg_off_macpl; + sappend(s, s2); + + sjset_tsft_datapad->s.jt = s_roundup; + sjset_tsft_datapad->s.jf = snext; + sjset_notsft_datapad->s.jt = s_roundup; + sjset_notsft_datapad->s.jf = snext; + } else + sjset_qos->s.jf = snext; + + return s; +} + +static void +insert_compute_vloffsets(b) + struct block *b; +{ + struct slist *s; + + /* + * For link-layer types that have a variable-length header + * preceding the link-layer header, generate code to load + * the offset of the link-layer header into the register + * assigned to that offset, if any. + */ + switch (linktype) { + + case DLT_PRISM_HEADER: + s = gen_load_prism_llprefixlen(); + break; + + case DLT_IEEE802_11_RADIO_AVS: + s = gen_load_avs_llprefixlen(); + break; + + case DLT_IEEE802_11_RADIO: + s = gen_load_radiotap_llprefixlen(); + break; + + case DLT_PPI: + s = gen_load_ppi_llprefixlen(); + break; + + default: + s = NULL; + break; + } + + /* + * For link-layer types that have a variable-length link-layer + * header, generate code to load the offset of the MAC-layer + * payload into the register assigned to that offset, if any. + */ + switch (linktype) { + + case DLT_IEEE802_11: + case DLT_PRISM_HEADER: + case DLT_IEEE802_11_RADIO_AVS: + case DLT_IEEE802_11_RADIO: + case DLT_PPI: + s = gen_load_802_11_header_len(s, b->stmts); + break; + } + + /* + * If we have any offset-loading code, append all the + * existing statements in the block to those statements, + * and make the resulting list the list of statements + * for the block. + */ + if (s != NULL) { + sappend(s, b->stmts); + b->stmts = s; + } +} + +static struct block * +gen_ppi_dlt_check(void) +{ + struct slist *s_load_dlt; + struct block *b; + + if (linktype == DLT_PPI) + { + /* Create the statements that check for the DLT + */ + s_load_dlt = new_stmt(BPF_LD|BPF_W|BPF_ABS); + s_load_dlt->s.k = 4; + + b = new_block(JMP(BPF_JEQ)); + + b->stmts = s_load_dlt; + b->s.k = SWAPLONG(DLT_IEEE802_11); + } + else + { + b = NULL; + } + + return b; +} + +static struct slist * +gen_prism_llprefixlen(void) +{ + struct slist *s; + + if (reg_off_ll == -1) { + /* + * We haven't yet assigned a register for the length + * of the radio header; allocate one. + */ + reg_off_ll = alloc_reg(); + } + + /* + * Load the register containing the radio length + * into the X register. + */ + s = new_stmt(BPF_LDX|BPF_MEM); + s->s.k = reg_off_ll; + return s; +} + +static struct slist * +gen_avs_llprefixlen(void) +{ + struct slist *s; + + if (reg_off_ll == -1) { + /* + * We haven't yet assigned a register for the length + * of the AVS header; allocate one. + */ + reg_off_ll = alloc_reg(); + } + + /* + * Load the register containing the AVS length + * into the X register. + */ + s = new_stmt(BPF_LDX|BPF_MEM); + s->s.k = reg_off_ll; + return s; +} + +static struct slist * +gen_radiotap_llprefixlen(void) +{ + struct slist *s; + + if (reg_off_ll == -1) { + /* + * We haven't yet assigned a register for the length + * of the radiotap header; allocate one. + */ + reg_off_ll = alloc_reg(); + } + + /* + * Load the register containing the radiotap length + * into the X register. + */ + s = new_stmt(BPF_LDX|BPF_MEM); + s->s.k = reg_off_ll; + return s; +} + +/* + * At the moment we treat PPI as normal Radiotap encoded + * packets. The difference is in the function that generates + * the code at the beginning to compute the header length. + * Since this code generator of PPI supports bare 802.11 + * encapsulation only (i.e. the encapsulated DLT should be + * DLT_IEEE802_11) we generate code to check for this too. + */ +static struct slist * +gen_ppi_llprefixlen(void) +{ + struct slist *s; + + if (reg_off_ll == -1) { + /* + * We haven't yet assigned a register for the length + * of the radiotap header; allocate one. + */ + reg_off_ll = alloc_reg(); + } + + /* + * Load the register containing the PPI length + * into the X register. + */ + s = new_stmt(BPF_LDX|BPF_MEM); + s->s.k = reg_off_ll; + return s; +} + +/* + * Generate code to compute the link-layer header length, if necessary, + * putting it into the X register, and to return either a pointer to a + * "struct slist" for the list of statements in that code, or NULL if + * no code is necessary. + */ +static struct slist * +gen_llprefixlen(void) +{ + switch (linktype) { + + case DLT_PRISM_HEADER: + return gen_prism_llprefixlen(); + + case DLT_IEEE802_11_RADIO_AVS: + return gen_avs_llprefixlen(); + + case DLT_IEEE802_11_RADIO: + return gen_radiotap_llprefixlen(); + + case DLT_PPI: + return gen_ppi_llprefixlen(); + + default: + return NULL; + } +} + +/* + * Generate code to load the register containing the offset of the + * MAC-layer payload into the X register; if no register for that offset + * has been allocated, allocate it first. + */ +static struct slist * +gen_off_macpl(void) +{ + struct slist *s; + + if (off_macpl_is_variable) { + if (reg_off_macpl == -1) { + /* + * We haven't yet assigned a register for the offset + * of the MAC-layer payload; allocate one. + */ + reg_off_macpl = alloc_reg(); + } + + /* + * Load the register containing the offset of the MAC-layer + * payload into the X register. + */ + s = new_stmt(BPF_LDX|BPF_MEM); + s->s.k = reg_off_macpl; + return s; + } else { + /* + * That offset isn't variable, so we don't need to + * generate any code. + */ + return NULL; + } +} + +/* + * Map an Ethernet type to the equivalent PPP type. + */ +static int +ethertype_to_ppptype(proto) + int proto; +{ + switch (proto) { + + case ETHERTYPE_IP: + proto = PPP_IP; + break; + +#ifdef INET6 + case ETHERTYPE_IPV6: + proto = PPP_IPV6; + break; +#endif + + case ETHERTYPE_DN: + proto = PPP_DECNET; + break; + + case ETHERTYPE_ATALK: + proto = PPP_APPLE; + break; + + case ETHERTYPE_NS: + proto = PPP_NS; + break; + + case LLCSAP_ISONS: + proto = PPP_OSI; + break; + + case LLCSAP_8021D: + /* + * I'm assuming the "Bridging PDU"s that go + * over PPP are Spanning Tree Protocol + * Bridging PDUs. + */ + proto = PPP_BRPDU; + break; + + case LLCSAP_IPX: + proto = PPP_IPX; + break; + } + return (proto); +} + +/* + * Generate code to match a particular packet type by matching the + * link-layer type field or fields in the 802.2 LLC header. + * + * "proto" is an Ethernet type value, if > ETHERMTU, or an LLC SAP + * value, if <= ETHERMTU. + */ +static struct block * +gen_linktype(proto) + register int proto; +{ + struct block *b0, *b1, *b2; + + /* are we checking MPLS-encapsulated packets? */ + if (label_stack_depth > 0) { + switch (proto) { + case ETHERTYPE_IP: + case PPP_IP: + /* FIXME add other L3 proto IDs */ + return gen_mpls_linktype(Q_IP); + + case ETHERTYPE_IPV6: + case PPP_IPV6: + /* FIXME add other L3 proto IDs */ + return gen_mpls_linktype(Q_IPV6); + + default: + bpf_error("unsupported protocol over mpls"); + /* NOTREACHED */ + } + } + + /* + * Are we testing PPPoE packets? + */ + if (is_pppoes) { + /* + * The PPPoE session header is part of the + * MAC-layer payload, so all references + * should be relative to the beginning of + * that payload. + */ + + /* + * We use Ethernet protocol types inside libpcap; + * map them to the corresponding PPP protocol types. + */ + proto = ethertype_to_ppptype(proto); + return gen_cmp(OR_MACPL, off_linktype, BPF_H, (bpf_int32)proto); + } + + switch (linktype) { + + case DLT_EN10MB: + case DLT_NETANALYZER: + case DLT_NETANALYZER_TRANSPARENT: + return gen_ether_linktype(proto); + /*NOTREACHED*/ + break; + + case DLT_C_HDLC: + switch (proto) { + + case LLCSAP_ISONS: + proto = (proto << 8 | LLCSAP_ISONS); + /* fall through */ + + default: + return gen_cmp(OR_LINK, off_linktype, BPF_H, + (bpf_int32)proto); + /*NOTREACHED*/ + break; + } + break; + + case DLT_IEEE802_11: + case DLT_PRISM_HEADER: + case DLT_IEEE802_11_RADIO_AVS: + case DLT_IEEE802_11_RADIO: + case DLT_PPI: + /* + * Check that we have a data frame. + */ + b0 = gen_check_802_11_data_frame(); + + /* + * Now check for the specified link-layer type. + */ + b1 = gen_llc_linktype(proto); + gen_and(b0, b1); + return b1; + /*NOTREACHED*/ + break; + + case DLT_FDDI: + /* + * XXX - check for asynchronous frames, as per RFC 1103. + */ + return gen_llc_linktype(proto); + /*NOTREACHED*/ + break; + + case DLT_IEEE802: + /* + * XXX - check for LLC PDUs, as per IEEE 802.5. + */ + return gen_llc_linktype(proto); + /*NOTREACHED*/ + break; + + case DLT_ATM_RFC1483: + case DLT_ATM_CLIP: + case DLT_IP_OVER_FC: + return gen_llc_linktype(proto); + /*NOTREACHED*/ + break; + + case DLT_SUNATM: + /* + * If "is_lane" is set, check for a LANE-encapsulated + * version of this protocol, otherwise check for an + * LLC-encapsulated version of this protocol. + * + * We assume LANE means Ethernet, not Token Ring. + */ + if (is_lane) { + /* + * Check that the packet doesn't begin with an + * LE Control marker. (We've already generated + * a test for LANE.) + */ + b0 = gen_cmp(OR_LINK, SUNATM_PKT_BEGIN_POS, BPF_H, + 0xFF00); + gen_not(b0); + + /* + * Now generate an Ethernet test. + */ + b1 = gen_ether_linktype(proto); + gen_and(b0, b1); + return b1; + } else { + /* + * Check for LLC encapsulation and then check the + * protocol. + */ + b0 = gen_atmfield_code(A_PROTOTYPE, PT_LLC, BPF_JEQ, 0); + b1 = gen_llc_linktype(proto); + gen_and(b0, b1); + return b1; + } + /*NOTREACHED*/ + break; + + case DLT_LINUX_SLL: + return gen_linux_sll_linktype(proto); + /*NOTREACHED*/ + break; + + case DLT_SLIP: + case DLT_SLIP_BSDOS: + case DLT_RAW: + /* + * These types don't provide any type field; packets + * are always IPv4 or IPv6. + * + * XXX - for IPv4, check for a version number of 4, and, + * for IPv6, check for a version number of 6? + */ + switch (proto) { + + case ETHERTYPE_IP: + /* Check for a version number of 4. */ + return gen_mcmp(OR_LINK, 0, BPF_B, 0x40, 0xF0); +#ifdef INET6 + case ETHERTYPE_IPV6: + /* Check for a version number of 6. */ + return gen_mcmp(OR_LINK, 0, BPF_B, 0x60, 0xF0); +#endif + + default: + return gen_false(); /* always false */ + } + /*NOTREACHED*/ + break; + + case DLT_IPV4: + /* + * Raw IPv4, so no type field. + */ + if (proto == ETHERTYPE_IP) + return gen_true(); /* always true */ + + /* Checking for something other than IPv4; always false */ + return gen_false(); + /*NOTREACHED*/ + break; + + case DLT_IPV6: + /* + * Raw IPv6, so no type field. + */ +#ifdef INET6 + if (proto == ETHERTYPE_IPV6) + return gen_true(); /* always true */ +#endif + + /* Checking for something other than IPv6; always false */ + return gen_false(); + /*NOTREACHED*/ + break; + + case DLT_PPP: + case DLT_PPP_PPPD: + case DLT_PPP_SERIAL: + case DLT_PPP_ETHER: + /* + * We use Ethernet protocol types inside libpcap; + * map them to the corresponding PPP protocol types. + */ + proto = ethertype_to_ppptype(proto); + return gen_cmp(OR_LINK, off_linktype, BPF_H, (bpf_int32)proto); + /*NOTREACHED*/ + break; + + case DLT_PPP_BSDOS: + /* + * We use Ethernet protocol types inside libpcap; + * map them to the corresponding PPP protocol types. + */ + switch (proto) { + + case ETHERTYPE_IP: + /* + * Also check for Van Jacobson-compressed IP. + * XXX - do this for other forms of PPP? + */ + b0 = gen_cmp(OR_LINK, off_linktype, BPF_H, PPP_IP); + b1 = gen_cmp(OR_LINK, off_linktype, BPF_H, PPP_VJC); + gen_or(b0, b1); + b0 = gen_cmp(OR_LINK, off_linktype, BPF_H, PPP_VJNC); + gen_or(b1, b0); + return b0; + + default: + proto = ethertype_to_ppptype(proto); + return gen_cmp(OR_LINK, off_linktype, BPF_H, + (bpf_int32)proto); + } + /*NOTREACHED*/ + break; + + case DLT_NULL: + case DLT_LOOP: + case DLT_ENC: + /* + * For DLT_NULL, the link-layer header is a 32-bit + * word containing an AF_ value in *host* byte order, + * and for DLT_ENC, the link-layer header begins + * with a 32-bit work containing an AF_ value in + * host byte order. + * + * In addition, if we're reading a saved capture file, + * the host byte order in the capture may not be the + * same as the host byte order on this machine. + * + * For DLT_LOOP, the link-layer header is a 32-bit + * word containing an AF_ value in *network* byte order. + * + * XXX - AF_ values may, unfortunately, be platform- + * dependent; for example, FreeBSD's AF_INET6 is 24 + * whilst NetBSD's and OpenBSD's is 26. + * + * This means that, when reading a capture file, just + * checking for our AF_INET6 value won't work if the + * capture file came from another OS. + */ + switch (proto) { + + case ETHERTYPE_IP: + proto = AF_INET; + break; + +#ifdef INET6 + case ETHERTYPE_IPV6: + proto = AF_INET6; + break; +#endif + + default: + /* + * Not a type on which we support filtering. + * XXX - support those that have AF_ values + * #defined on this platform, at least? + */ + return gen_false(); + } + + if (linktype == DLT_NULL || linktype == DLT_ENC) { + /* + * The AF_ value is in host byte order, but + * the BPF interpreter will convert it to + * network byte order. + * + * If this is a save file, and it's from a + * machine with the opposite byte order to + * ours, we byte-swap the AF_ value. + * + * Then we run it through "htonl()", and + * generate code to compare against the result. + */ + if (bpf_pcap->sf.rfile != NULL && + bpf_pcap->sf.swapped) + proto = SWAPLONG(proto); + proto = htonl(proto); + } + return (gen_cmp(OR_LINK, 0, BPF_W, (bpf_int32)proto)); + +#ifdef HAVE_NET_PFVAR_H + case DLT_PFLOG: + /* + * af field is host byte order in contrast to the rest of + * the packet. + */ + if (proto == ETHERTYPE_IP) + return (gen_cmp(OR_LINK, offsetof(struct pfloghdr, af), + BPF_B, (bpf_int32)AF_INET)); +#ifdef INET6 + else if (proto == ETHERTYPE_IPV6) + return (gen_cmp(OR_LINK, offsetof(struct pfloghdr, af), + BPF_B, (bpf_int32)AF_INET6)); +#endif /* INET6 */ + else + return gen_false(); + /*NOTREACHED*/ + break; +#endif /* HAVE_NET_PFVAR_H */ + + case DLT_ARCNET: + case DLT_ARCNET_LINUX: + /* + * XXX should we check for first fragment if the protocol + * uses PHDS? + */ + switch (proto) { + + default: + return gen_false(); + +#ifdef INET6 + case ETHERTYPE_IPV6: + return (gen_cmp(OR_LINK, off_linktype, BPF_B, + (bpf_int32)ARCTYPE_INET6)); +#endif /* INET6 */ + + case ETHERTYPE_IP: + b0 = gen_cmp(OR_LINK, off_linktype, BPF_B, + (bpf_int32)ARCTYPE_IP); + b1 = gen_cmp(OR_LINK, off_linktype, BPF_B, + (bpf_int32)ARCTYPE_IP_OLD); + gen_or(b0, b1); + return (b1); + + case ETHERTYPE_ARP: + b0 = gen_cmp(OR_LINK, off_linktype, BPF_B, + (bpf_int32)ARCTYPE_ARP); + b1 = gen_cmp(OR_LINK, off_linktype, BPF_B, + (bpf_int32)ARCTYPE_ARP_OLD); + gen_or(b0, b1); + return (b1); + + case ETHERTYPE_REVARP: + return (gen_cmp(OR_LINK, off_linktype, BPF_B, + (bpf_int32)ARCTYPE_REVARP)); + + case ETHERTYPE_ATALK: + return (gen_cmp(OR_LINK, off_linktype, BPF_B, + (bpf_int32)ARCTYPE_ATALK)); + } + /*NOTREACHED*/ + break; + + case DLT_LTALK: + switch (proto) { + case ETHERTYPE_ATALK: + return gen_true(); + default: + return gen_false(); + } + /*NOTREACHED*/ + break; + + case DLT_FRELAY: + /* + * XXX - assumes a 2-byte Frame Relay header with + * DLCI and flags. What if the address is longer? + */ + switch (proto) { + + case ETHERTYPE_IP: + /* + * Check for the special NLPID for IP. + */ + return gen_cmp(OR_LINK, 2, BPF_H, (0x03<<8) | 0xcc); + +#ifdef INET6 + case ETHERTYPE_IPV6: + /* + * Check for the special NLPID for IPv6. + */ + return gen_cmp(OR_LINK, 2, BPF_H, (0x03<<8) | 0x8e); +#endif + + case LLCSAP_ISONS: + /* + * Check for several OSI protocols. + * + * Frame Relay packets typically have an OSI + * NLPID at the beginning; we check for each + * of them. + * + * What we check for is the NLPID and a frame + * control field of UI, i.e. 0x03 followed + * by the NLPID. + */ + b0 = gen_cmp(OR_LINK, 2, BPF_H, (0x03<<8) | ISO8473_CLNP); + b1 = gen_cmp(OR_LINK, 2, BPF_H, (0x03<<8) | ISO9542_ESIS); + b2 = gen_cmp(OR_LINK, 2, BPF_H, (0x03<<8) | ISO10589_ISIS); + gen_or(b1, b2); + gen_or(b0, b2); + return b2; + + default: + return gen_false(); + } + /*NOTREACHED*/ + break; + + case DLT_MFR: + bpf_error("Multi-link Frame Relay link-layer type filtering not implemented"); + + case DLT_JUNIPER_MFR: + case DLT_JUNIPER_MLFR: + case DLT_JUNIPER_MLPPP: + case DLT_JUNIPER_ATM1: + case DLT_JUNIPER_ATM2: + case DLT_JUNIPER_PPPOE: + case DLT_JUNIPER_PPPOE_ATM: + case DLT_JUNIPER_GGSN: + case DLT_JUNIPER_ES: + case DLT_JUNIPER_MONITOR: + case DLT_JUNIPER_SERVICES: + case DLT_JUNIPER_ETHER: + case DLT_JUNIPER_PPP: + case DLT_JUNIPER_FRELAY: + case DLT_JUNIPER_CHDLC: + case DLT_JUNIPER_VP: + case DLT_JUNIPER_ST: + case DLT_JUNIPER_ISM: + case DLT_JUNIPER_VS: + case DLT_JUNIPER_SRX_E2E: + case DLT_JUNIPER_FIBRECHANNEL: + case DLT_JUNIPER_ATM_CEMIC: + + /* just lets verify the magic number for now - + * on ATM we may have up to 6 different encapsulations on the wire + * and need a lot of heuristics to figure out that the payload + * might be; + * + * FIXME encapsulation specific BPF_ filters + */ + return gen_mcmp(OR_LINK, 0, BPF_W, 0x4d474300, 0xffffff00); /* compare the magic number */ + + case DLT_IPNET: + return gen_ipnet_linktype(proto); + + case DLT_LINUX_IRDA: + bpf_error("IrDA link-layer type filtering not implemented"); + + case DLT_DOCSIS: + bpf_error("DOCSIS link-layer type filtering not implemented"); + + case DLT_MTP2: + case DLT_MTP2_WITH_PHDR: + bpf_error("MTP2 link-layer type filtering not implemented"); + + case DLT_ERF: + bpf_error("ERF link-layer type filtering not implemented"); + + case DLT_PFSYNC: + bpf_error("PFSYNC link-layer type filtering not implemented"); + + case DLT_LINUX_LAPD: + bpf_error("LAPD link-layer type filtering not implemented"); + + case DLT_USB: + case DLT_USB_LINUX: + case DLT_USB_LINUX_MMAPPED: + bpf_error("USB link-layer type filtering not implemented"); + + case DLT_BLUETOOTH_HCI_H4: + case DLT_BLUETOOTH_HCI_H4_WITH_PHDR: + bpf_error("Bluetooth link-layer type filtering not implemented"); + + case DLT_CAN20B: + case DLT_CAN_SOCKETCAN: + bpf_error("CAN link-layer type filtering not implemented"); + + case DLT_IEEE802_15_4: + case DLT_IEEE802_15_4_LINUX: + case DLT_IEEE802_15_4_NONASK_PHY: + case DLT_IEEE802_15_4_NOFCS: + bpf_error("IEEE 802.15.4 link-layer type filtering not implemented"); + + case DLT_IEEE802_16_MAC_CPS_RADIO: + bpf_error("IEEE 802.16 link-layer type filtering not implemented"); + + case DLT_SITA: + bpf_error("SITA link-layer type filtering not implemented"); + + case DLT_RAIF1: + bpf_error("RAIF1 link-layer type filtering not implemented"); + + case DLT_IPMB: + bpf_error("IPMB link-layer type filtering not implemented"); + + case DLT_AX25_KISS: + bpf_error("AX.25 link-layer type filtering not implemented"); + } + + /* + * All the types that have no encapsulation should either be + * handled as DLT_SLIP, DLT_SLIP_BSDOS, and DLT_RAW are, if + * all packets are IP packets, or should be handled in some + * special case, if none of them are (if some are and some + * aren't, the lack of encapsulation is a problem, as we'd + * have to find some other way of determining the packet type). + * + * Therefore, if "off_linktype" is -1, there's an error. + */ + if (off_linktype == (u_int)-1) + abort(); + + /* + * Any type not handled above should always have an Ethernet + * type at an offset of "off_linktype". + */ + return gen_cmp(OR_LINK, off_linktype, BPF_H, (bpf_int32)proto); +} + +/* + * Check for an LLC SNAP packet with a given organization code and + * protocol type; we check the entire contents of the 802.2 LLC and + * snap headers, checking for DSAP and SSAP of SNAP and a control + * field of 0x03 in the LLC header, and for the specified organization + * code and protocol type in the SNAP header. + */ +static struct block * +gen_snap(orgcode, ptype) + bpf_u_int32 orgcode; + bpf_u_int32 ptype; +{ + u_char snapblock[8]; + + snapblock[0] = LLCSAP_SNAP; /* DSAP = SNAP */ + snapblock[1] = LLCSAP_SNAP; /* SSAP = SNAP */ + snapblock[2] = 0x03; /* control = UI */ + snapblock[3] = (orgcode >> 16); /* upper 8 bits of organization code */ + snapblock[4] = (orgcode >> 8); /* middle 8 bits of organization code */ + snapblock[5] = (orgcode >> 0); /* lower 8 bits of organization code */ + snapblock[6] = (ptype >> 8); /* upper 8 bits of protocol type */ + snapblock[7] = (ptype >> 0); /* lower 8 bits of protocol type */ + return gen_bcmp(OR_MACPL, 0, 8, snapblock); +} + +/* + * Generate code to match a particular packet type, for link-layer types + * using 802.2 LLC headers. + * + * This is *NOT* used for Ethernet; "gen_ether_linktype()" is used + * for that - it handles the D/I/X Ethernet vs. 802.3+802.2 issues. + * + * "proto" is an Ethernet type value, if > ETHERMTU, or an LLC SAP + * value, if <= ETHERMTU. We use that to determine whether to + * match the DSAP or both DSAP and LSAP or to check the OUI and + * protocol ID in a SNAP header. + */ +static struct block * +gen_llc_linktype(proto) + int proto; +{ + /* + * XXX - handle token-ring variable-length header. + */ + switch (proto) { + + case LLCSAP_IP: + case LLCSAP_ISONS: + case LLCSAP_NETBEUI: + /* + * XXX - should we check both the DSAP and the + * SSAP, like this, or should we check just the + * DSAP, as we do for other types <= ETHERMTU + * (i.e., other SAP values)? + */ + return gen_cmp(OR_MACPL, 0, BPF_H, (bpf_u_int32) + ((proto << 8) | proto)); + + case LLCSAP_IPX: + /* + * XXX - are there ever SNAP frames for IPX on + * non-Ethernet 802.x networks? + */ + return gen_cmp(OR_MACPL, 0, BPF_B, + (bpf_int32)LLCSAP_IPX); + + case ETHERTYPE_ATALK: + /* + * 802.2-encapsulated ETHERTYPE_ATALK packets are + * SNAP packets with an organization code of + * 0x080007 (Apple, for Appletalk) and a protocol + * type of ETHERTYPE_ATALK (Appletalk). + * + * XXX - check for an organization code of + * encapsulated Ethernet as well? + */ + return gen_snap(0x080007, ETHERTYPE_ATALK); + + default: + /* + * XXX - we don't have to check for IPX 802.3 + * here, but should we check for the IPX Ethertype? + */ + if (proto <= ETHERMTU) { + /* + * This is an LLC SAP value, so check + * the DSAP. + */ + return gen_cmp(OR_MACPL, 0, BPF_B, (bpf_int32)proto); + } else { + /* + * This is an Ethernet type; we assume that it's + * unlikely that it'll appear in the right place + * at random, and therefore check only the + * location that would hold the Ethernet type + * in a SNAP frame with an organization code of + * 0x000000 (encapsulated Ethernet). + * + * XXX - if we were to check for the SNAP DSAP and + * LSAP, as per XXX, and were also to check for an + * organization code of 0x000000 (encapsulated + * Ethernet), we'd do + * + * return gen_snap(0x000000, proto); + * + * here; for now, we don't, as per the above. + * I don't know whether it's worth the extra CPU + * time to do the right check or not. + */ + return gen_cmp(OR_MACPL, 6, BPF_H, (bpf_int32)proto); + } + } +} + +static struct block * +gen_hostop(addr, mask, dir, proto, src_off, dst_off) + bpf_u_int32 addr; + bpf_u_int32 mask; + int dir, proto; + u_int src_off, dst_off; +{ + struct block *b0, *b1; + u_int offset; + + switch (dir) { + + case Q_SRC: + offset = src_off; + break; + + case Q_DST: + offset = dst_off; + break; + + case Q_AND: + b0 = gen_hostop(addr, mask, Q_SRC, proto, src_off, dst_off); + b1 = gen_hostop(addr, mask, Q_DST, proto, src_off, dst_off); + gen_and(b0, b1); + return b1; + + case Q_OR: + case Q_DEFAULT: + b0 = gen_hostop(addr, mask, Q_SRC, proto, src_off, dst_off); + b1 = gen_hostop(addr, mask, Q_DST, proto, src_off, dst_off); + gen_or(b0, b1); + return b1; + + default: + abort(); + } + b0 = gen_linktype(proto); + b1 = gen_mcmp(OR_NET, offset, BPF_W, (bpf_int32)addr, mask); + gen_and(b0, b1); + return b1; +} + +#ifdef INET6 +static struct block * +gen_hostop6(addr, mask, dir, proto, src_off, dst_off) + struct in6_addr *addr; + struct in6_addr *mask; + int dir, proto; + u_int src_off, dst_off; +{ + struct block *b0, *b1; + u_int offset; + u_int32_t *a, *m; + + switch (dir) { + + case Q_SRC: + offset = src_off; + break; + + case Q_DST: + offset = dst_off; + break; + + case Q_AND: + b0 = gen_hostop6(addr, mask, Q_SRC, proto, src_off, dst_off); + b1 = gen_hostop6(addr, mask, Q_DST, proto, src_off, dst_off); + gen_and(b0, b1); + return b1; + + case Q_OR: + case Q_DEFAULT: + b0 = gen_hostop6(addr, mask, Q_SRC, proto, src_off, dst_off); + b1 = gen_hostop6(addr, mask, Q_DST, proto, src_off, dst_off); + gen_or(b0, b1); + return b1; + + default: + abort(); + } + /* this order is important */ + a = (u_int32_t *)addr; + m = (u_int32_t *)mask; + b1 = gen_mcmp(OR_NET, offset + 12, BPF_W, ntohl(a[3]), ntohl(m[3])); + b0 = gen_mcmp(OR_NET, offset + 8, BPF_W, ntohl(a[2]), ntohl(m[2])); + gen_and(b0, b1); + b0 = gen_mcmp(OR_NET, offset + 4, BPF_W, ntohl(a[1]), ntohl(m[1])); + gen_and(b0, b1); + b0 = gen_mcmp(OR_NET, offset + 0, BPF_W, ntohl(a[0]), ntohl(m[0])); + gen_and(b0, b1); + b0 = gen_linktype(proto); + gen_and(b0, b1); + return b1; +} +#endif /*INET6*/ + +static struct block * +gen_ehostop(eaddr, dir) + register const u_char *eaddr; + register int dir; +{ + register struct block *b0, *b1; + + switch (dir) { + case Q_SRC: + return gen_bcmp(OR_LINK, off_mac + 6, 6, eaddr); + + case Q_DST: + return gen_bcmp(OR_LINK, off_mac + 0, 6, eaddr); + + case Q_AND: + b0 = gen_ehostop(eaddr, Q_SRC); + b1 = gen_ehostop(eaddr, Q_DST); + gen_and(b0, b1); + return b1; + + case Q_DEFAULT: + case Q_OR: + b0 = gen_ehostop(eaddr, Q_SRC); + b1 = gen_ehostop(eaddr, Q_DST); + gen_or(b0, b1); + return b1; + + case Q_ADDR1: + bpf_error("'addr1' is only supported on 802.11 with 802.11 headers"); + break; + + case Q_ADDR2: + bpf_error("'addr2' is only supported on 802.11 with 802.11 headers"); + break; + + case Q_ADDR3: + bpf_error("'addr3' is only supported on 802.11 with 802.11 headers"); + break; + + case Q_ADDR4: + bpf_error("'addr4' is only supported on 802.11 with 802.11 headers"); + break; + + case Q_RA: + bpf_error("'ra' is only supported on 802.11 with 802.11 headers"); + break; + + case Q_TA: + bpf_error("'ta' is only supported on 802.11 with 802.11 headers"); + break; + } + abort(); + /* NOTREACHED */ +} + +/* + * Like gen_ehostop, but for DLT_FDDI + */ +static struct block * +gen_fhostop(eaddr, dir) + register const u_char *eaddr; + register int dir; +{ + struct block *b0, *b1; + + switch (dir) { + case Q_SRC: +#ifdef PCAP_FDDIPAD + return gen_bcmp(OR_LINK, 6 + 1 + pcap_fddipad, 6, eaddr); +#else + return gen_bcmp(OR_LINK, 6 + 1, 6, eaddr); +#endif + + case Q_DST: +#ifdef PCAP_FDDIPAD + return gen_bcmp(OR_LINK, 0 + 1 + pcap_fddipad, 6, eaddr); +#else + return gen_bcmp(OR_LINK, 0 + 1, 6, eaddr); +#endif + + case Q_AND: + b0 = gen_fhostop(eaddr, Q_SRC); + b1 = gen_fhostop(eaddr, Q_DST); + gen_and(b0, b1); + return b1; + + case Q_DEFAULT: + case Q_OR: + b0 = gen_fhostop(eaddr, Q_SRC); + b1 = gen_fhostop(eaddr, Q_DST); + gen_or(b0, b1); + return b1; + + case Q_ADDR1: + bpf_error("'addr1' is only supported on 802.11"); + break; + + case Q_ADDR2: + bpf_error("'addr2' is only supported on 802.11"); + break; + + case Q_ADDR3: + bpf_error("'addr3' is only supported on 802.11"); + break; + + case Q_ADDR4: + bpf_error("'addr4' is only supported on 802.11"); + break; + + case Q_RA: + bpf_error("'ra' is only supported on 802.11"); + break; + + case Q_TA: + bpf_error("'ta' is only supported on 802.11"); + break; + } + abort(); + /* NOTREACHED */ +} + +/* + * Like gen_ehostop, but for DLT_IEEE802 (Token Ring) + */ +static struct block * +gen_thostop(eaddr, dir) + register const u_char *eaddr; + register int dir; +{ + register struct block *b0, *b1; + + switch (dir) { + case Q_SRC: + return gen_bcmp(OR_LINK, 8, 6, eaddr); + + case Q_DST: + return gen_bcmp(OR_LINK, 2, 6, eaddr); + + case Q_AND: + b0 = gen_thostop(eaddr, Q_SRC); + b1 = gen_thostop(eaddr, Q_DST); + gen_and(b0, b1); + return b1; + + case Q_DEFAULT: + case Q_OR: + b0 = gen_thostop(eaddr, Q_SRC); + b1 = gen_thostop(eaddr, Q_DST); + gen_or(b0, b1); + return b1; + + case Q_ADDR1: + bpf_error("'addr1' is only supported on 802.11"); + break; + + case Q_ADDR2: + bpf_error("'addr2' is only supported on 802.11"); + break; + + case Q_ADDR3: + bpf_error("'addr3' is only supported on 802.11"); + break; + + case Q_ADDR4: + bpf_error("'addr4' is only supported on 802.11"); + break; + + case Q_RA: + bpf_error("'ra' is only supported on 802.11"); + break; + + case Q_TA: + bpf_error("'ta' is only supported on 802.11"); + break; + } + abort(); + /* NOTREACHED */ +} + +/* + * Like gen_ehostop, but for DLT_IEEE802_11 (802.11 wireless LAN) and + * various 802.11 + radio headers. + */ +static struct block * +gen_wlanhostop(eaddr, dir) + register const u_char *eaddr; + register int dir; +{ + register struct block *b0, *b1, *b2; + register struct slist *s; + +#ifdef ENABLE_WLAN_FILTERING_PATCH + /* + * TODO GV 20070613 + * We need to disable the optimizer because the optimizer is buggy + * and wipes out some LD instructions generated by the below + * code to validate the Frame Control bits + */ + no_optimize = 1; +#endif /* ENABLE_WLAN_FILTERING_PATCH */ + + switch (dir) { + case Q_SRC: + /* + * Oh, yuk. + * + * For control frames, there is no SA. + * + * For management frames, SA is at an + * offset of 10 from the beginning of + * the packet. + * + * For data frames, SA is at an offset + * of 10 from the beginning of the packet + * if From DS is clear, at an offset of + * 16 from the beginning of the packet + * if From DS is set and To DS is clear, + * and an offset of 24 from the beginning + * of the packet if From DS is set and To DS + * is set. + */ + + /* + * Generate the tests to be done for data frames + * with From DS set. + * + * First, check for To DS set, i.e. check "link[1] & 0x01". + */ + s = gen_load_a(OR_LINK, 1, BPF_B); + b1 = new_block(JMP(BPF_JSET)); + b1->s.k = 0x01; /* To DS */ + b1->stmts = s; + + /* + * If To DS is set, the SA is at 24. + */ + b0 = gen_bcmp(OR_LINK, 24, 6, eaddr); + gen_and(b1, b0); + + /* + * Now, check for To DS not set, i.e. check + * "!(link[1] & 0x01)". + */ + s = gen_load_a(OR_LINK, 1, BPF_B); + b2 = new_block(JMP(BPF_JSET)); + b2->s.k = 0x01; /* To DS */ + b2->stmts = s; + gen_not(b2); + + /* + * If To DS is not set, the SA is at 16. + */ + b1 = gen_bcmp(OR_LINK, 16, 6, eaddr); + gen_and(b2, b1); + + /* + * Now OR together the last two checks. That gives + * the complete set of checks for data frames with + * From DS set. + */ + gen_or(b1, b0); + + /* + * Now check for From DS being set, and AND that with + * the ORed-together checks. + */ + s = gen_load_a(OR_LINK, 1, BPF_B); + b1 = new_block(JMP(BPF_JSET)); + b1->s.k = 0x02; /* From DS */ + b1->stmts = s; + gen_and(b1, b0); + + /* + * Now check for data frames with From DS not set. + */ + s = gen_load_a(OR_LINK, 1, BPF_B); + b2 = new_block(JMP(BPF_JSET)); + b2->s.k = 0x02; /* From DS */ + b2->stmts = s; + gen_not(b2); + + /* + * If From DS isn't set, the SA is at 10. + */ + b1 = gen_bcmp(OR_LINK, 10, 6, eaddr); + gen_and(b2, b1); + + /* + * Now OR together the checks for data frames with + * From DS not set and for data frames with From DS + * set; that gives the checks done for data frames. + */ + gen_or(b1, b0); + + /* + * Now check for a data frame. + * I.e, check "link[0] & 0x08". + */ + s = gen_load_a(OR_LINK, 0, BPF_B); + b1 = new_block(JMP(BPF_JSET)); + b1->s.k = 0x08; + b1->stmts = s; + + /* + * AND that with the checks done for data frames. + */ + gen_and(b1, b0); + + /* + * If the high-order bit of the type value is 0, this + * is a management frame. + * I.e, check "!(link[0] & 0x08)". + */ + s = gen_load_a(OR_LINK, 0, BPF_B); + b2 = new_block(JMP(BPF_JSET)); + b2->s.k = 0x08; + b2->stmts = s; + gen_not(b2); + + /* + * For management frames, the SA is at 10. + */ + b1 = gen_bcmp(OR_LINK, 10, 6, eaddr); + gen_and(b2, b1); + + /* + * OR that with the checks done for data frames. + * That gives the checks done for management and + * data frames. + */ + gen_or(b1, b0); + + /* + * If the low-order bit of the type value is 1, + * this is either a control frame or a frame + * with a reserved type, and thus not a + * frame with an SA. + * + * I.e., check "!(link[0] & 0x04)". + */ + s = gen_load_a(OR_LINK, 0, BPF_B); + b1 = new_block(JMP(BPF_JSET)); + b1->s.k = 0x04; + b1->stmts = s; + gen_not(b1); + + /* + * AND that with the checks for data and management + * frames. + */ + gen_and(b1, b0); + return b0; + + case Q_DST: + /* + * Oh, yuk. + * + * For control frames, there is no DA. + * + * For management frames, DA is at an + * offset of 4 from the beginning of + * the packet. + * + * For data frames, DA is at an offset + * of 4 from the beginning of the packet + * if To DS is clear and at an offset of + * 16 from the beginning of the packet + * if To DS is set. + */ + + /* + * Generate the tests to be done for data frames. + * + * First, check for To DS set, i.e. "link[1] & 0x01". + */ + s = gen_load_a(OR_LINK, 1, BPF_B); + b1 = new_block(JMP(BPF_JSET)); + b1->s.k = 0x01; /* To DS */ + b1->stmts = s; + + /* + * If To DS is set, the DA is at 16. + */ + b0 = gen_bcmp(OR_LINK, 16, 6, eaddr); + gen_and(b1, b0); + + /* + * Now, check for To DS not set, i.e. check + * "!(link[1] & 0x01)". + */ + s = gen_load_a(OR_LINK, 1, BPF_B); + b2 = new_block(JMP(BPF_JSET)); + b2->s.k = 0x01; /* To DS */ + b2->stmts = s; + gen_not(b2); + + /* + * If To DS is not set, the DA is at 4. + */ + b1 = gen_bcmp(OR_LINK, 4, 6, eaddr); + gen_and(b2, b1); + + /* + * Now OR together the last two checks. That gives + * the complete set of checks for data frames. + */ + gen_or(b1, b0); + + /* + * Now check for a data frame. + * I.e, check "link[0] & 0x08". + */ + s = gen_load_a(OR_LINK, 0, BPF_B); + b1 = new_block(JMP(BPF_JSET)); + b1->s.k = 0x08; + b1->stmts = s; + + /* + * AND that with the checks done for data frames. + */ + gen_and(b1, b0); + + /* + * If the high-order bit of the type value is 0, this + * is a management frame. + * I.e, check "!(link[0] & 0x08)". + */ + s = gen_load_a(OR_LINK, 0, BPF_B); + b2 = new_block(JMP(BPF_JSET)); + b2->s.k = 0x08; + b2->stmts = s; + gen_not(b2); + + /* + * For management frames, the DA is at 4. + */ + b1 = gen_bcmp(OR_LINK, 4, 6, eaddr); + gen_and(b2, b1); + + /* + * OR that with the checks done for data frames. + * That gives the checks done for management and + * data frames. + */ + gen_or(b1, b0); + + /* + * If the low-order bit of the type value is 1, + * this is either a control frame or a frame + * with a reserved type, and thus not a + * frame with an SA. + * + * I.e., check "!(link[0] & 0x04)". + */ + s = gen_load_a(OR_LINK, 0, BPF_B); + b1 = new_block(JMP(BPF_JSET)); + b1->s.k = 0x04; + b1->stmts = s; + gen_not(b1); + + /* + * AND that with the checks for data and management + * frames. + */ + gen_and(b1, b0); + return b0; + + case Q_RA: + /* + * Not present in management frames; addr1 in other + * frames. + */ + + /* + * If the high-order bit of the type value is 0, this + * is a management frame. + * I.e, check "(link[0] & 0x08)". + */ + s = gen_load_a(OR_LINK, 0, BPF_B); + b1 = new_block(JMP(BPF_JSET)); + b1->s.k = 0x08; + b1->stmts = s; + + /* + * Check addr1. + */ + b0 = gen_bcmp(OR_LINK, 4, 6, eaddr); + + /* + * AND that with the check of addr1. + */ + gen_and(b1, b0); + return (b0); + + case Q_TA: + /* + * Not present in management frames; addr2, if present, + * in other frames. + */ + + /* + * Not present in CTS or ACK control frames. + */ + b0 = gen_mcmp(OR_LINK, 0, BPF_B, IEEE80211_FC0_TYPE_CTL, + IEEE80211_FC0_TYPE_MASK); + gen_not(b0); + b1 = gen_mcmp(OR_LINK, 0, BPF_B, IEEE80211_FC0_SUBTYPE_CTS, + IEEE80211_FC0_SUBTYPE_MASK); + gen_not(b1); + b2 = gen_mcmp(OR_LINK, 0, BPF_B, IEEE80211_FC0_SUBTYPE_ACK, + IEEE80211_FC0_SUBTYPE_MASK); + gen_not(b2); + gen_and(b1, b2); + gen_or(b0, b2); + + /* + * If the high-order bit of the type value is 0, this + * is a management frame. + * I.e, check "(link[0] & 0x08)". + */ + s = gen_load_a(OR_LINK, 0, BPF_B); + b1 = new_block(JMP(BPF_JSET)); + b1->s.k = 0x08; + b1->stmts = s; + + /* + * AND that with the check for frames other than + * CTS and ACK frames. + */ + gen_and(b1, b2); + + /* + * Check addr2. + */ + b1 = gen_bcmp(OR_LINK, 10, 6, eaddr); + gen_and(b2, b1); + return b1; + + /* + * XXX - add BSSID keyword? + */ + case Q_ADDR1: + return (gen_bcmp(OR_LINK, 4, 6, eaddr)); + + case Q_ADDR2: + /* + * Not present in CTS or ACK control frames. + */ + b0 = gen_mcmp(OR_LINK, 0, BPF_B, IEEE80211_FC0_TYPE_CTL, + IEEE80211_FC0_TYPE_MASK); + gen_not(b0); + b1 = gen_mcmp(OR_LINK, 0, BPF_B, IEEE80211_FC0_SUBTYPE_CTS, + IEEE80211_FC0_SUBTYPE_MASK); + gen_not(b1); + b2 = gen_mcmp(OR_LINK, 0, BPF_B, IEEE80211_FC0_SUBTYPE_ACK, + IEEE80211_FC0_SUBTYPE_MASK); + gen_not(b2); + gen_and(b1, b2); + gen_or(b0, b2); + b1 = gen_bcmp(OR_LINK, 10, 6, eaddr); + gen_and(b2, b1); + return b1; + + case Q_ADDR3: + /* + * Not present in control frames. + */ + b0 = gen_mcmp(OR_LINK, 0, BPF_B, IEEE80211_FC0_TYPE_CTL, + IEEE80211_FC0_TYPE_MASK); + gen_not(b0); + b1 = gen_bcmp(OR_LINK, 16, 6, eaddr); + gen_and(b0, b1); + return b1; + + case Q_ADDR4: + /* + * Present only if the direction mask has both "From DS" + * and "To DS" set. Neither control frames nor management + * frames should have both of those set, so we don't + * check the frame type. + */ + b0 = gen_mcmp(OR_LINK, 1, BPF_B, + IEEE80211_FC1_DIR_DSTODS, IEEE80211_FC1_DIR_MASK); + b1 = gen_bcmp(OR_LINK, 24, 6, eaddr); + gen_and(b0, b1); + return b1; + + case Q_AND: + b0 = gen_wlanhostop(eaddr, Q_SRC); + b1 = gen_wlanhostop(eaddr, Q_DST); + gen_and(b0, b1); + return b1; + + case Q_DEFAULT: + case Q_OR: + b0 = gen_wlanhostop(eaddr, Q_SRC); + b1 = gen_wlanhostop(eaddr, Q_DST); + gen_or(b0, b1); + return b1; + } + abort(); + /* NOTREACHED */ +} + +/* + * Like gen_ehostop, but for RFC 2625 IP-over-Fibre-Channel. + * (We assume that the addresses are IEEE 48-bit MAC addresses, + * as the RFC states.) + */ +static struct block * +gen_ipfchostop(eaddr, dir) + register const u_char *eaddr; + register int dir; +{ + register struct block *b0, *b1; + + switch (dir) { + case Q_SRC: + return gen_bcmp(OR_LINK, 10, 6, eaddr); + + case Q_DST: + return gen_bcmp(OR_LINK, 2, 6, eaddr); + + case Q_AND: + b0 = gen_ipfchostop(eaddr, Q_SRC); + b1 = gen_ipfchostop(eaddr, Q_DST); + gen_and(b0, b1); + return b1; + + case Q_DEFAULT: + case Q_OR: + b0 = gen_ipfchostop(eaddr, Q_SRC); + b1 = gen_ipfchostop(eaddr, Q_DST); + gen_or(b0, b1); + return b1; + + case Q_ADDR1: + bpf_error("'addr1' is only supported on 802.11"); + break; + + case Q_ADDR2: + bpf_error("'addr2' is only supported on 802.11"); + break; + + case Q_ADDR3: + bpf_error("'addr3' is only supported on 802.11"); + break; + + case Q_ADDR4: + bpf_error("'addr4' is only supported on 802.11"); + break; + + case Q_RA: + bpf_error("'ra' is only supported on 802.11"); + break; + + case Q_TA: + bpf_error("'ta' is only supported on 802.11"); + break; + } + abort(); + /* NOTREACHED */ +} + +/* + * This is quite tricky because there may be pad bytes in front of the + * DECNET header, and then there are two possible data packet formats that + * carry both src and dst addresses, plus 5 packet types in a format that + * carries only the src node, plus 2 types that use a different format and + * also carry just the src node. + * + * Yuck. + * + * Instead of doing those all right, we just look for data packets with + * 0 or 1 bytes of padding. If you want to look at other packets, that + * will require a lot more hacking. + * + * To add support for filtering on DECNET "areas" (network numbers) + * one would want to add a "mask" argument to this routine. That would + * make the filter even more inefficient, although one could be clever + * and not generate masking instructions if the mask is 0xFFFF. + */ +static struct block * +gen_dnhostop(addr, dir) + bpf_u_int32 addr; + int dir; +{ + struct block *b0, *b1, *b2, *tmp; + u_int offset_lh; /* offset if long header is received */ + u_int offset_sh; /* offset if short header is received */ + + switch (dir) { + + case Q_DST: + offset_sh = 1; /* follows flags */ + offset_lh = 7; /* flgs,darea,dsubarea,HIORD */ + break; + + case Q_SRC: + offset_sh = 3; /* follows flags, dstnode */ + offset_lh = 15; /* flgs,darea,dsubarea,did,sarea,ssub,HIORD */ + break; + + case Q_AND: + /* Inefficient because we do our Calvinball dance twice */ + b0 = gen_dnhostop(addr, Q_SRC); + b1 = gen_dnhostop(addr, Q_DST); + gen_and(b0, b1); + return b1; + + case Q_OR: + case Q_DEFAULT: + /* Inefficient because we do our Calvinball dance twice */ + b0 = gen_dnhostop(addr, Q_SRC); + b1 = gen_dnhostop(addr, Q_DST); + gen_or(b0, b1); + return b1; + + case Q_ISO: + bpf_error("ISO host filtering not implemented"); + + default: + abort(); + } + b0 = gen_linktype(ETHERTYPE_DN); + /* Check for pad = 1, long header case */ + tmp = gen_mcmp(OR_NET, 2, BPF_H, + (bpf_int32)ntohs(0x0681), (bpf_int32)ntohs(0x07FF)); + b1 = gen_cmp(OR_NET, 2 + 1 + offset_lh, + BPF_H, (bpf_int32)ntohs((u_short)addr)); + gen_and(tmp, b1); + /* Check for pad = 0, long header case */ + tmp = gen_mcmp(OR_NET, 2, BPF_B, (bpf_int32)0x06, (bpf_int32)0x7); + b2 = gen_cmp(OR_NET, 2 + offset_lh, BPF_H, (bpf_int32)ntohs((u_short)addr)); + gen_and(tmp, b2); + gen_or(b2, b1); + /* Check for pad = 1, short header case */ + tmp = gen_mcmp(OR_NET, 2, BPF_H, + (bpf_int32)ntohs(0x0281), (bpf_int32)ntohs(0x07FF)); + b2 = gen_cmp(OR_NET, 2 + 1 + offset_sh, BPF_H, (bpf_int32)ntohs((u_short)addr)); + gen_and(tmp, b2); + gen_or(b2, b1); + /* Check for pad = 0, short header case */ + tmp = gen_mcmp(OR_NET, 2, BPF_B, (bpf_int32)0x02, (bpf_int32)0x7); + b2 = gen_cmp(OR_NET, 2 + offset_sh, BPF_H, (bpf_int32)ntohs((u_short)addr)); + gen_and(tmp, b2); + gen_or(b2, b1); + + /* Combine with test for linktype */ + gen_and(b0, b1); + return b1; +} + +/* + * Generate a check for IPv4 or IPv6 for MPLS-encapsulated packets; + * test the bottom-of-stack bit, and then check the version number + * field in the IP header. + */ +static struct block * +gen_mpls_linktype(proto) + int proto; +{ + struct block *b0, *b1; + + switch (proto) { + + case Q_IP: + /* match the bottom-of-stack bit */ + b0 = gen_mcmp(OR_NET, -2, BPF_B, 0x01, 0x01); + /* match the IPv4 version number */ + b1 = gen_mcmp(OR_NET, 0, BPF_B, 0x40, 0xf0); + gen_and(b0, b1); + return b1; + + case Q_IPV6: + /* match the bottom-of-stack bit */ + b0 = gen_mcmp(OR_NET, -2, BPF_B, 0x01, 0x01); + /* match the IPv4 version number */ + b1 = gen_mcmp(OR_NET, 0, BPF_B, 0x60, 0xf0); + gen_and(b0, b1); + return b1; + + default: + abort(); + } +} + +static struct block * +gen_host(addr, mask, proto, dir, type) + bpf_u_int32 addr; + bpf_u_int32 mask; + int proto; + int dir; + int type; +{ + struct block *b0, *b1; + const char *typestr; + + if (type == Q_NET) + typestr = "net"; + else + typestr = "host"; + + switch (proto) { + + case Q_DEFAULT: + b0 = gen_host(addr, mask, Q_IP, dir, type); + /* + * Only check for non-IPv4 addresses if we're not + * checking MPLS-encapsulated packets. + */ + if (label_stack_depth == 0) { + b1 = gen_host(addr, mask, Q_ARP, dir, type); + gen_or(b0, b1); + b0 = gen_host(addr, mask, Q_RARP, dir, type); + gen_or(b1, b0); + } + return b0; + + case Q_IP: + return gen_hostop(addr, mask, dir, ETHERTYPE_IP, 12, 16); + + case Q_RARP: + return gen_hostop(addr, mask, dir, ETHERTYPE_REVARP, 14, 24); + + case Q_ARP: + return gen_hostop(addr, mask, dir, ETHERTYPE_ARP, 14, 24); + + case Q_TCP: + bpf_error("'tcp' modifier applied to %s", typestr); + + case Q_SCTP: + bpf_error("'sctp' modifier applied to %s", typestr); + + case Q_UDP: + bpf_error("'udp' modifier applied to %s", typestr); + + case Q_ICMP: + bpf_error("'icmp' modifier applied to %s", typestr); + + case Q_IGMP: + bpf_error("'igmp' modifier applied to %s", typestr); + + case Q_IGRP: + bpf_error("'igrp' modifier applied to %s", typestr); + + case Q_PIM: + bpf_error("'pim' modifier applied to %s", typestr); + + case Q_VRRP: + bpf_error("'vrrp' modifier applied to %s", typestr); + + case Q_CARP: + bpf_error("'carp' modifier applied to %s", typestr); + + case Q_ATALK: + bpf_error("ATALK host filtering not implemented"); + + case Q_AARP: + bpf_error("AARP host filtering not implemented"); + + case Q_DECNET: + return gen_dnhostop(addr, dir); + + case Q_SCA: + bpf_error("SCA host filtering not implemented"); + + case Q_LAT: + bpf_error("LAT host filtering not implemented"); + + case Q_MOPDL: + bpf_error("MOPDL host filtering not implemented"); + + case Q_MOPRC: + bpf_error("MOPRC host filtering not implemented"); + +#ifdef INET6 + case Q_IPV6: + bpf_error("'ip6' modifier applied to ip host"); + + case Q_ICMPV6: + bpf_error("'icmp6' modifier applied to %s", typestr); +#endif /* INET6 */ + + case Q_AH: + bpf_error("'ah' modifier applied to %s", typestr); + + case Q_ESP: + bpf_error("'esp' modifier applied to %s", typestr); + + case Q_ISO: + bpf_error("ISO host filtering not implemented"); + + case Q_ESIS: + bpf_error("'esis' modifier applied to %s", typestr); + + case Q_ISIS: + bpf_error("'isis' modifier applied to %s", typestr); + + case Q_CLNP: + bpf_error("'clnp' modifier applied to %s", typestr); + + case Q_STP: + bpf_error("'stp' modifier applied to %s", typestr); + + case Q_IPX: + bpf_error("IPX host filtering not implemented"); + + case Q_NETBEUI: + bpf_error("'netbeui' modifier applied to %s", typestr); + + case Q_RADIO: + bpf_error("'radio' modifier applied to %s", typestr); + + default: + abort(); + } + /* NOTREACHED */ +} + +#ifdef INET6 +static struct block * +gen_host6(addr, mask, proto, dir, type) + struct in6_addr *addr; + struct in6_addr *mask; + int proto; + int dir; + int type; +{ + const char *typestr; + + if (type == Q_NET) + typestr = "net"; + else + typestr = "host"; + + switch (proto) { + + case Q_DEFAULT: + return gen_host6(addr, mask, Q_IPV6, dir, type); + + case Q_IP: + bpf_error("'ip' modifier applied to ip6 %s", typestr); + + case Q_RARP: + bpf_error("'rarp' modifier applied to ip6 %s", typestr); + + case Q_ARP: + bpf_error("'arp' modifier applied to ip6 %s", typestr); + + case Q_SCTP: + bpf_error("'sctp' modifier applied to %s", typestr); + + case Q_TCP: + bpf_error("'tcp' modifier applied to %s", typestr); + + case Q_UDP: + bpf_error("'udp' modifier applied to %s", typestr); + + case Q_ICMP: + bpf_error("'icmp' modifier applied to %s", typestr); + + case Q_IGMP: + bpf_error("'igmp' modifier applied to %s", typestr); + + case Q_IGRP: + bpf_error("'igrp' modifier applied to %s", typestr); + + case Q_PIM: + bpf_error("'pim' modifier applied to %s", typestr); + + case Q_VRRP: + bpf_error("'vrrp' modifier applied to %s", typestr); + + case Q_CARP: + bpf_error("'carp' modifier applied to %s", typestr); + + case Q_ATALK: + bpf_error("ATALK host filtering not implemented"); + + case Q_AARP: + bpf_error("AARP host filtering not implemented"); + + case Q_DECNET: + bpf_error("'decnet' modifier applied to ip6 %s", typestr); + + case Q_SCA: + bpf_error("SCA host filtering not implemented"); + + case Q_LAT: + bpf_error("LAT host filtering not implemented"); + + case Q_MOPDL: + bpf_error("MOPDL host filtering not implemented"); + + case Q_MOPRC: + bpf_error("MOPRC host filtering not implemented"); + + case Q_IPV6: + return gen_hostop6(addr, mask, dir, ETHERTYPE_IPV6, 8, 24); + + case Q_ICMPV6: + bpf_error("'icmp6' modifier applied to %s", typestr); + + case Q_AH: + bpf_error("'ah' modifier applied to %s", typestr); + + case Q_ESP: + bpf_error("'esp' modifier applied to %s", typestr); + + case Q_ISO: + bpf_error("ISO host filtering not implemented"); + + case Q_ESIS: + bpf_error("'esis' modifier applied to %s", typestr); + + case Q_ISIS: + bpf_error("'isis' modifier applied to %s", typestr); + + case Q_CLNP: + bpf_error("'clnp' modifier applied to %s", typestr); + + case Q_STP: + bpf_error("'stp' modifier applied to %s", typestr); + + case Q_IPX: + bpf_error("IPX host filtering not implemented"); + + case Q_NETBEUI: + bpf_error("'netbeui' modifier applied to %s", typestr); + + case Q_RADIO: + bpf_error("'radio' modifier applied to %s", typestr); + + default: + abort(); + } + /* NOTREACHED */ +} +#endif /*INET6*/ + +#ifndef INET6 +static struct block * +gen_gateway(eaddr, alist, proto, dir) + const u_char *eaddr; + bpf_u_int32 **alist; + int proto; + int dir; +{ + struct block *b0, *b1, *tmp; + + if (dir != 0) + bpf_error("direction applied to 'gateway'"); + + switch (proto) { + case Q_DEFAULT: + case Q_IP: + case Q_ARP: + case Q_RARP: + switch (linktype) { + case DLT_EN10MB: + case DLT_NETANALYZER: + case DLT_NETANALYZER_TRANSPARENT: + b0 = gen_ehostop(eaddr, Q_OR); + break; + case DLT_FDDI: + b0 = gen_fhostop(eaddr, Q_OR); + break; + case DLT_IEEE802: + b0 = gen_thostop(eaddr, Q_OR); + break; + case DLT_IEEE802_11: + case DLT_PRISM_HEADER: + case DLT_IEEE802_11_RADIO_AVS: + case DLT_IEEE802_11_RADIO: + case DLT_PPI: + b0 = gen_wlanhostop(eaddr, Q_OR); + break; + case DLT_SUNATM: + if (!is_lane) + bpf_error( + "'gateway' supported only on ethernet/FDDI/token ring/802.11/ATM LANE/Fibre Channel"); + /* + * Check that the packet doesn't begin with an + * LE Control marker. (We've already generated + * a test for LANE.) + */ + b1 = gen_cmp(OR_LINK, SUNATM_PKT_BEGIN_POS, + BPF_H, 0xFF00); + gen_not(b1); + + /* + * Now check the MAC address. + */ + b0 = gen_ehostop(eaddr, Q_OR); + gen_and(b1, b0); + break; + case DLT_IP_OVER_FC: + b0 = gen_ipfchostop(eaddr, Q_OR); + break; + default: + bpf_error( + "'gateway' supported only on ethernet/FDDI/token ring/802.11/ATM LANE/Fibre Channel"); + } + b1 = gen_host(**alist++, 0xffffffff, proto, Q_OR, Q_HOST); + while (*alist) { + tmp = gen_host(**alist++, 0xffffffff, proto, Q_OR, + Q_HOST); + gen_or(b1, tmp); + b1 = tmp; + } + gen_not(b1); + gen_and(b0, b1); + return b1; + } + bpf_error("illegal modifier of 'gateway'"); + /* NOTREACHED */ +} +#endif + +struct block * +gen_proto_abbrev(proto) + int proto; +{ + struct block *b0; + struct block *b1; + + switch (proto) { + + case Q_SCTP: + b1 = gen_proto(IPPROTO_SCTP, Q_IP, Q_DEFAULT); +#ifdef INET6 + b0 = gen_proto(IPPROTO_SCTP, Q_IPV6, Q_DEFAULT); + gen_or(b0, b1); +#endif + break; + + case Q_TCP: + b1 = gen_proto(IPPROTO_TCP, Q_IP, Q_DEFAULT); +#ifdef INET6 + b0 = gen_proto(IPPROTO_TCP, Q_IPV6, Q_DEFAULT); + gen_or(b0, b1); +#endif + break; + + case Q_UDP: + b1 = gen_proto(IPPROTO_UDP, Q_IP, Q_DEFAULT); +#ifdef INET6 + b0 = gen_proto(IPPROTO_UDP, Q_IPV6, Q_DEFAULT); + gen_or(b0, b1); +#endif + break; + + case Q_ICMP: + b1 = gen_proto(IPPROTO_ICMP, Q_IP, Q_DEFAULT); + break; + +#ifndef IPPROTO_IGMP +#define IPPROTO_IGMP 2 +#endif + + case Q_IGMP: + b1 = gen_proto(IPPROTO_IGMP, Q_IP, Q_DEFAULT); + break; + +#ifndef IPPROTO_IGRP +#define IPPROTO_IGRP 9 +#endif + case Q_IGRP: + b1 = gen_proto(IPPROTO_IGRP, Q_IP, Q_DEFAULT); + break; + +#ifndef IPPROTO_PIM +#define IPPROTO_PIM 103 +#endif + + case Q_PIM: + b1 = gen_proto(IPPROTO_PIM, Q_IP, Q_DEFAULT); +#ifdef INET6 + b0 = gen_proto(IPPROTO_PIM, Q_IPV6, Q_DEFAULT); + gen_or(b0, b1); +#endif + break; + +#ifndef IPPROTO_VRRP +#define IPPROTO_VRRP 112 +#endif + + case Q_VRRP: + b1 = gen_proto(IPPROTO_VRRP, Q_IP, Q_DEFAULT); + break; + +#ifndef IPPROTO_CARP +#define IPPROTO_CARP 112 +#endif + + case Q_CARP: + b1 = gen_proto(IPPROTO_CARP, Q_IP, Q_DEFAULT); + break; + + case Q_IP: + b1 = gen_linktype(ETHERTYPE_IP); + break; + + case Q_ARP: + b1 = gen_linktype(ETHERTYPE_ARP); + break; + + case Q_RARP: + b1 = gen_linktype(ETHERTYPE_REVARP); + break; + + case Q_LINK: + bpf_error("link layer applied in wrong context"); + + case Q_ATALK: + b1 = gen_linktype(ETHERTYPE_ATALK); + break; + + case Q_AARP: + b1 = gen_linktype(ETHERTYPE_AARP); + break; + + case Q_DECNET: + b1 = gen_linktype(ETHERTYPE_DN); + break; + + case Q_SCA: + b1 = gen_linktype(ETHERTYPE_SCA); + break; + + case Q_LAT: + b1 = gen_linktype(ETHERTYPE_LAT); + break; + + case Q_MOPDL: + b1 = gen_linktype(ETHERTYPE_MOPDL); + break; + + case Q_MOPRC: + b1 = gen_linktype(ETHERTYPE_MOPRC); + break; + +#ifdef INET6 + case Q_IPV6: + b1 = gen_linktype(ETHERTYPE_IPV6); + break; + +#ifndef IPPROTO_ICMPV6 +#define IPPROTO_ICMPV6 58 +#endif + case Q_ICMPV6: + b1 = gen_proto(IPPROTO_ICMPV6, Q_IPV6, Q_DEFAULT); + break; +#endif /* INET6 */ + +#ifndef IPPROTO_AH +#define IPPROTO_AH 51 +#endif + case Q_AH: + b1 = gen_proto(IPPROTO_AH, Q_IP, Q_DEFAULT); +#ifdef INET6 + b0 = gen_proto(IPPROTO_AH, Q_IPV6, Q_DEFAULT); + gen_or(b0, b1); +#endif + break; + +#ifndef IPPROTO_ESP +#define IPPROTO_ESP 50 +#endif + case Q_ESP: + b1 = gen_proto(IPPROTO_ESP, Q_IP, Q_DEFAULT); +#ifdef INET6 + b0 = gen_proto(IPPROTO_ESP, Q_IPV6, Q_DEFAULT); + gen_or(b0, b1); +#endif + break; + + case Q_ISO: + b1 = gen_linktype(LLCSAP_ISONS); + break; + + case Q_ESIS: + b1 = gen_proto(ISO9542_ESIS, Q_ISO, Q_DEFAULT); + break; + + case Q_ISIS: + b1 = gen_proto(ISO10589_ISIS, Q_ISO, Q_DEFAULT); + break; + + case Q_ISIS_L1: /* all IS-IS Level1 PDU-Types */ + b0 = gen_proto(ISIS_L1_LAN_IIH, Q_ISIS, Q_DEFAULT); + b1 = gen_proto(ISIS_PTP_IIH, Q_ISIS, Q_DEFAULT); /* FIXME extract the circuit-type bits */ + gen_or(b0, b1); + b0 = gen_proto(ISIS_L1_LSP, Q_ISIS, Q_DEFAULT); + gen_or(b0, b1); + b0 = gen_proto(ISIS_L1_CSNP, Q_ISIS, Q_DEFAULT); + gen_or(b0, b1); + b0 = gen_proto(ISIS_L1_PSNP, Q_ISIS, Q_DEFAULT); + gen_or(b0, b1); + break; + + case Q_ISIS_L2: /* all IS-IS Level2 PDU-Types */ + b0 = gen_proto(ISIS_L2_LAN_IIH, Q_ISIS, Q_DEFAULT); + b1 = gen_proto(ISIS_PTP_IIH, Q_ISIS, Q_DEFAULT); /* FIXME extract the circuit-type bits */ + gen_or(b0, b1); + b0 = gen_proto(ISIS_L2_LSP, Q_ISIS, Q_DEFAULT); + gen_or(b0, b1); + b0 = gen_proto(ISIS_L2_CSNP, Q_ISIS, Q_DEFAULT); + gen_or(b0, b1); + b0 = gen_proto(ISIS_L2_PSNP, Q_ISIS, Q_DEFAULT); + gen_or(b0, b1); + break; + + case Q_ISIS_IIH: /* all IS-IS Hello PDU-Types */ + b0 = gen_proto(ISIS_L1_LAN_IIH, Q_ISIS, Q_DEFAULT); + b1 = gen_proto(ISIS_L2_LAN_IIH, Q_ISIS, Q_DEFAULT); + gen_or(b0, b1); + b0 = gen_proto(ISIS_PTP_IIH, Q_ISIS, Q_DEFAULT); + gen_or(b0, b1); + break; + + case Q_ISIS_LSP: + b0 = gen_proto(ISIS_L1_LSP, Q_ISIS, Q_DEFAULT); + b1 = gen_proto(ISIS_L2_LSP, Q_ISIS, Q_DEFAULT); + gen_or(b0, b1); + break; + + case Q_ISIS_SNP: + b0 = gen_proto(ISIS_L1_CSNP, Q_ISIS, Q_DEFAULT); + b1 = gen_proto(ISIS_L2_CSNP, Q_ISIS, Q_DEFAULT); + gen_or(b0, b1); + b0 = gen_proto(ISIS_L1_PSNP, Q_ISIS, Q_DEFAULT); + gen_or(b0, b1); + b0 = gen_proto(ISIS_L2_PSNP, Q_ISIS, Q_DEFAULT); + gen_or(b0, b1); + break; + + case Q_ISIS_CSNP: + b0 = gen_proto(ISIS_L1_CSNP, Q_ISIS, Q_DEFAULT); + b1 = gen_proto(ISIS_L2_CSNP, Q_ISIS, Q_DEFAULT); + gen_or(b0, b1); + break; + + case Q_ISIS_PSNP: + b0 = gen_proto(ISIS_L1_PSNP, Q_ISIS, Q_DEFAULT); + b1 = gen_proto(ISIS_L2_PSNP, Q_ISIS, Q_DEFAULT); + gen_or(b0, b1); + break; + + case Q_CLNP: + b1 = gen_proto(ISO8473_CLNP, Q_ISO, Q_DEFAULT); + break; + + case Q_STP: + b1 = gen_linktype(LLCSAP_8021D); + break; + + case Q_IPX: + b1 = gen_linktype(LLCSAP_IPX); + break; + + case Q_NETBEUI: + b1 = gen_linktype(LLCSAP_NETBEUI); + break; + + case Q_RADIO: + bpf_error("'radio' is not a valid protocol type"); + + default: + abort(); + } + return b1; +} + +static struct block * +gen_ipfrag() +{ + struct slist *s; + struct block *b; + + /* not IPv4 frag other than the first frag */ + s = gen_load_a(OR_NET, 6, BPF_H); + b = new_block(JMP(BPF_JSET)); + b->s.k = 0x1fff; + b->stmts = s; + gen_not(b); + + return b; +} + +/* + * Generate a comparison to a port value in the transport-layer header + * at the specified offset from the beginning of that header. + * + * XXX - this handles a variable-length prefix preceding the link-layer + * header, such as the radiotap or AVS radio prefix, but doesn't handle + * variable-length link-layer headers (such as Token Ring or 802.11 + * headers). + */ +static struct block * +gen_portatom(off, v) + int off; + bpf_int32 v; +{ + return gen_cmp(OR_TRAN_IPV4, off, BPF_H, v); +} + +#ifdef INET6 +static struct block * +gen_portatom6(off, v) + int off; + bpf_int32 v; +{ + return gen_cmp(OR_TRAN_IPV6, off, BPF_H, v); +} +#endif/*INET6*/ + +struct block * +gen_portop(port, proto, dir) + int port, proto, dir; +{ + struct block *b0, *b1, *tmp; + + /* ip proto 'proto' and not a fragment other than the first fragment */ + tmp = gen_cmp(OR_NET, 9, BPF_B, (bpf_int32)proto); + b0 = gen_ipfrag(); + gen_and(tmp, b0); + + switch (dir) { + case Q_SRC: + b1 = gen_portatom(0, (bpf_int32)port); + break; + + case Q_DST: + b1 = gen_portatom(2, (bpf_int32)port); + break; + + case Q_OR: + case Q_DEFAULT: + tmp = gen_portatom(0, (bpf_int32)port); + b1 = gen_portatom(2, (bpf_int32)port); + gen_or(tmp, b1); + break; + + case Q_AND: + tmp = gen_portatom(0, (bpf_int32)port); + b1 = gen_portatom(2, (bpf_int32)port); + gen_and(tmp, b1); + break; + + default: + abort(); + } + gen_and(b0, b1); + + return b1; +} + +static struct block * +gen_port(port, ip_proto, dir) + int port; + int ip_proto; + int dir; +{ + struct block *b0, *b1, *tmp; + + /* + * ether proto ip + * + * For FDDI, RFC 1188 says that SNAP encapsulation is used, + * not LLC encapsulation with LLCSAP_IP. + * + * For IEEE 802 networks - which includes 802.5 token ring + * (which is what DLT_IEEE802 means) and 802.11 - RFC 1042 + * says that SNAP encapsulation is used, not LLC encapsulation + * with LLCSAP_IP. + * + * For LLC-encapsulated ATM/"Classical IP", RFC 1483 and + * RFC 2225 say that SNAP encapsulation is used, not LLC + * encapsulation with LLCSAP_IP. + * + * So we always check for ETHERTYPE_IP. + */ + b0 = gen_linktype(ETHERTYPE_IP); + + switch (ip_proto) { + case IPPROTO_UDP: + case IPPROTO_TCP: + case IPPROTO_SCTP: + b1 = gen_portop(port, ip_proto, dir); + break; + + case PROTO_UNDEF: + tmp = gen_portop(port, IPPROTO_TCP, dir); + b1 = gen_portop(port, IPPROTO_UDP, dir); + gen_or(tmp, b1); + tmp = gen_portop(port, IPPROTO_SCTP, dir); + gen_or(tmp, b1); + break; + + default: + abort(); + } + gen_and(b0, b1); + return b1; +} + +#ifdef INET6 +struct block * +gen_portop6(port, proto, dir) + int port, proto, dir; +{ + struct block *b0, *b1, *tmp; + + /* ip6 proto 'proto' */ + /* XXX - catch the first fragment of a fragmented packet? */ + b0 = gen_cmp(OR_NET, 6, BPF_B, (bpf_int32)proto); + + switch (dir) { + case Q_SRC: + b1 = gen_portatom6(0, (bpf_int32)port); + break; + + case Q_DST: + b1 = gen_portatom6(2, (bpf_int32)port); + break; + + case Q_OR: + case Q_DEFAULT: + tmp = gen_portatom6(0, (bpf_int32)port); + b1 = gen_portatom6(2, (bpf_int32)port); + gen_or(tmp, b1); + break; + + case Q_AND: + tmp = gen_portatom6(0, (bpf_int32)port); + b1 = gen_portatom6(2, (bpf_int32)port); + gen_and(tmp, b1); + break; + + default: + abort(); + } + gen_and(b0, b1); + + return b1; +} + +static struct block * +gen_port6(port, ip_proto, dir) + int port; + int ip_proto; + int dir; +{ + struct block *b0, *b1, *tmp; + + /* link proto ip6 */ + b0 = gen_linktype(ETHERTYPE_IPV6); + + switch (ip_proto) { + case IPPROTO_UDP: + case IPPROTO_TCP: + case IPPROTO_SCTP: + b1 = gen_portop6(port, ip_proto, dir); + break; + + case PROTO_UNDEF: + tmp = gen_portop6(port, IPPROTO_TCP, dir); + b1 = gen_portop6(port, IPPROTO_UDP, dir); + gen_or(tmp, b1); + tmp = gen_portop6(port, IPPROTO_SCTP, dir); + gen_or(tmp, b1); + break; + + default: + abort(); + } + gen_and(b0, b1); + return b1; +} +#endif /* INET6 */ + +/* gen_portrange code */ +static struct block * +gen_portrangeatom(off, v1, v2) + int off; + bpf_int32 v1, v2; +{ + struct block *b1, *b2; + + if (v1 > v2) { + /* + * Reverse the order of the ports, so v1 is the lower one. + */ + bpf_int32 vtemp; + + vtemp = v1; + v1 = v2; + v2 = vtemp; + } + + b1 = gen_cmp_ge(OR_TRAN_IPV4, off, BPF_H, v1); + b2 = gen_cmp_le(OR_TRAN_IPV4, off, BPF_H, v2); + + gen_and(b1, b2); + + return b2; +} + +struct block * +gen_portrangeop(port1, port2, proto, dir) + int port1, port2; + int proto; + int dir; +{ + struct block *b0, *b1, *tmp; + + /* ip proto 'proto' and not a fragment other than the first fragment */ + tmp = gen_cmp(OR_NET, 9, BPF_B, (bpf_int32)proto); + b0 = gen_ipfrag(); + gen_and(tmp, b0); + + switch (dir) { + case Q_SRC: + b1 = gen_portrangeatom(0, (bpf_int32)port1, (bpf_int32)port2); + break; + + case Q_DST: + b1 = gen_portrangeatom(2, (bpf_int32)port1, (bpf_int32)port2); + break; + + case Q_OR: + case Q_DEFAULT: + tmp = gen_portrangeatom(0, (bpf_int32)port1, (bpf_int32)port2); + b1 = gen_portrangeatom(2, (bpf_int32)port1, (bpf_int32)port2); + gen_or(tmp, b1); + break; + + case Q_AND: + tmp = gen_portrangeatom(0, (bpf_int32)port1, (bpf_int32)port2); + b1 = gen_portrangeatom(2, (bpf_int32)port1, (bpf_int32)port2); + gen_and(tmp, b1); + break; + + default: + abort(); + } + gen_and(b0, b1); + + return b1; +} + +static struct block * +gen_portrange(port1, port2, ip_proto, dir) + int port1, port2; + int ip_proto; + int dir; +{ + struct block *b0, *b1, *tmp; + + /* link proto ip */ + b0 = gen_linktype(ETHERTYPE_IP); + + switch (ip_proto) { + case IPPROTO_UDP: + case IPPROTO_TCP: + case IPPROTO_SCTP: + b1 = gen_portrangeop(port1, port2, ip_proto, dir); + break; + + case PROTO_UNDEF: + tmp = gen_portrangeop(port1, port2, IPPROTO_TCP, dir); + b1 = gen_portrangeop(port1, port2, IPPROTO_UDP, dir); + gen_or(tmp, b1); + tmp = gen_portrangeop(port1, port2, IPPROTO_SCTP, dir); + gen_or(tmp, b1); + break; + + default: + abort(); + } + gen_and(b0, b1); + return b1; +} + +#ifdef INET6 +static struct block * +gen_portrangeatom6(off, v1, v2) + int off; + bpf_int32 v1, v2; +{ + struct block *b1, *b2; + + if (v1 > v2) { + /* + * Reverse the order of the ports, so v1 is the lower one. + */ + bpf_int32 vtemp; + + vtemp = v1; + v1 = v2; + v2 = vtemp; + } + + b1 = gen_cmp_ge(OR_TRAN_IPV6, off, BPF_H, v1); + b2 = gen_cmp_le(OR_TRAN_IPV6, off, BPF_H, v2); + + gen_and(b1, b2); + + return b2; +} + +struct block * +gen_portrangeop6(port1, port2, proto, dir) + int port1, port2; + int proto; + int dir; +{ + struct block *b0, *b1, *tmp; + + /* ip6 proto 'proto' */ + /* XXX - catch the first fragment of a fragmented packet? */ + b0 = gen_cmp(OR_NET, 6, BPF_B, (bpf_int32)proto); + + switch (dir) { + case Q_SRC: + b1 = gen_portrangeatom6(0, (bpf_int32)port1, (bpf_int32)port2); + break; + + case Q_DST: + b1 = gen_portrangeatom6(2, (bpf_int32)port1, (bpf_int32)port2); + break; + + case Q_OR: + case Q_DEFAULT: + tmp = gen_portrangeatom6(0, (bpf_int32)port1, (bpf_int32)port2); + b1 = gen_portrangeatom6(2, (bpf_int32)port1, (bpf_int32)port2); + gen_or(tmp, b1); + break; + + case Q_AND: + tmp = gen_portrangeatom6(0, (bpf_int32)port1, (bpf_int32)port2); + b1 = gen_portrangeatom6(2, (bpf_int32)port1, (bpf_int32)port2); + gen_and(tmp, b1); + break; + + default: + abort(); + } + gen_and(b0, b1); + + return b1; +} + +static struct block * +gen_portrange6(port1, port2, ip_proto, dir) + int port1, port2; + int ip_proto; + int dir; +{ + struct block *b0, *b1, *tmp; + + /* link proto ip6 */ + b0 = gen_linktype(ETHERTYPE_IPV6); + + switch (ip_proto) { + case IPPROTO_UDP: + case IPPROTO_TCP: + case IPPROTO_SCTP: + b1 = gen_portrangeop6(port1, port2, ip_proto, dir); + break; + + case PROTO_UNDEF: + tmp = gen_portrangeop6(port1, port2, IPPROTO_TCP, dir); + b1 = gen_portrangeop6(port1, port2, IPPROTO_UDP, dir); + gen_or(tmp, b1); + tmp = gen_portrangeop6(port1, port2, IPPROTO_SCTP, dir); + gen_or(tmp, b1); + break; + + default: + abort(); + } + gen_and(b0, b1); + return b1; +} +#endif /* INET6 */ + +static int +lookup_proto(name, proto) + register const char *name; + register int proto; +{ + register int v; + + switch (proto) { + + case Q_DEFAULT: + case Q_IP: + case Q_IPV6: + v = pcap_nametoproto(name); + if (v == PROTO_UNDEF) + bpf_error("unknown ip proto '%s'", name); + break; + + case Q_LINK: + /* XXX should look up h/w protocol type based on linktype */ + v = pcap_nametoeproto(name); + if (v == PROTO_UNDEF) { + v = pcap_nametollc(name); + if (v == PROTO_UNDEF) + bpf_error("unknown ether proto '%s'", name); + } + break; + + case Q_ISO: + if (strcmp(name, "esis") == 0) + v = ISO9542_ESIS; + else if (strcmp(name, "isis") == 0) + v = ISO10589_ISIS; + else if (strcmp(name, "clnp") == 0) + v = ISO8473_CLNP; + else + bpf_error("unknown osi proto '%s'", name); + break; + + default: + v = PROTO_UNDEF; + break; + } + return v; +} + +#if 0 +struct stmt * +gen_joinsp(s, n) + struct stmt **s; + int n; +{ + return NULL; +} +#endif + +static struct block * +gen_protochain(v, proto, dir) + int v; + int proto; + int dir; +{ +#ifdef NO_PROTOCHAIN + return gen_proto(v, proto, dir); +#else + struct block *b0, *b; + struct slist *s[100]; + int fix2, fix3, fix4, fix5; + int ahcheck, again, end; + int i, max; + int reg2 = alloc_reg(); + + memset(s, 0, sizeof(s)); + fix2 = fix3 = fix4 = fix5 = 0; + + switch (proto) { + case Q_IP: + case Q_IPV6: + break; + case Q_DEFAULT: + b0 = gen_protochain(v, Q_IP, dir); + b = gen_protochain(v, Q_IPV6, dir); + gen_or(b0, b); + return b; + default: + bpf_error("bad protocol applied for 'protochain'"); + /*NOTREACHED*/ + } + + /* + * We don't handle variable-length prefixes before the link-layer + * header, or variable-length link-layer headers, here yet. + * We might want to add BPF instructions to do the protochain + * work, to simplify that and, on platforms that have a BPF + * interpreter with the new instructions, let the filtering + * be done in the kernel. (We already require a modified BPF + * engine to do the protochain stuff, to support backward + * branches, and backward branch support is unlikely to appear + * in kernel BPF engines.) + */ + switch (linktype) { + + case DLT_IEEE802_11: + case DLT_PRISM_HEADER: + case DLT_IEEE802_11_RADIO_AVS: + case DLT_IEEE802_11_RADIO: + case DLT_PPI: + bpf_error("'protochain' not supported with 802.11"); + } + + no_optimize = 1; /*this code is not compatible with optimzer yet */ + + /* + * s[0] is a dummy entry to protect other BPF insn from damage + * by s[fix] = foo with uninitialized variable "fix". It is somewhat + * hard to find interdependency made by jump table fixup. + */ + i = 0; + s[i] = new_stmt(0); /*dummy*/ + i++; + + switch (proto) { + case Q_IP: + b0 = gen_linktype(ETHERTYPE_IP); + + /* A = ip->ip_p */ + s[i] = new_stmt(BPF_LD|BPF_ABS|BPF_B); + s[i]->s.k = off_macpl + off_nl + 9; + i++; + /* X = ip->ip_hl << 2 */ + s[i] = new_stmt(BPF_LDX|BPF_MSH|BPF_B); + s[i]->s.k = off_macpl + off_nl; + i++; + break; +#ifdef INET6 + case Q_IPV6: + b0 = gen_linktype(ETHERTYPE_IPV6); + + /* A = ip6->ip_nxt */ + s[i] = new_stmt(BPF_LD|BPF_ABS|BPF_B); + s[i]->s.k = off_macpl + off_nl + 6; + i++; + /* X = sizeof(struct ip6_hdr) */ + s[i] = new_stmt(BPF_LDX|BPF_IMM); + s[i]->s.k = 40; + i++; + break; +#endif + default: + bpf_error("unsupported proto to gen_protochain"); + /*NOTREACHED*/ + } + + /* again: if (A == v) goto end; else fall through; */ + again = i; + s[i] = new_stmt(BPF_JMP|BPF_JEQ|BPF_K); + s[i]->s.k = v; + s[i]->s.jt = NULL; /*later*/ + s[i]->s.jf = NULL; /*update in next stmt*/ + fix5 = i; + i++; + +#ifndef IPPROTO_NONE +#define IPPROTO_NONE 59 +#endif + /* if (A == IPPROTO_NONE) goto end */ + s[i] = new_stmt(BPF_JMP|BPF_JEQ|BPF_K); + s[i]->s.jt = NULL; /*later*/ + s[i]->s.jf = NULL; /*update in next stmt*/ + s[i]->s.k = IPPROTO_NONE; + s[fix5]->s.jf = s[i]; + fix2 = i; + i++; + +#ifdef INET6 + if (proto == Q_IPV6) { + int v6start, v6end, v6advance, j; + + v6start = i; + /* if (A == IPPROTO_HOPOPTS) goto v6advance */ + s[i] = new_stmt(BPF_JMP|BPF_JEQ|BPF_K); + s[i]->s.jt = NULL; /*later*/ + s[i]->s.jf = NULL; /*update in next stmt*/ + s[i]->s.k = IPPROTO_HOPOPTS; + s[fix2]->s.jf = s[i]; + i++; + /* if (A == IPPROTO_DSTOPTS) goto v6advance */ + s[i - 1]->s.jf = s[i] = new_stmt(BPF_JMP|BPF_JEQ|BPF_K); + s[i]->s.jt = NULL; /*later*/ + s[i]->s.jf = NULL; /*update in next stmt*/ + s[i]->s.k = IPPROTO_DSTOPTS; + i++; + /* if (A == IPPROTO_ROUTING) goto v6advance */ + s[i - 1]->s.jf = s[i] = new_stmt(BPF_JMP|BPF_JEQ|BPF_K); + s[i]->s.jt = NULL; /*later*/ + s[i]->s.jf = NULL; /*update in next stmt*/ + s[i]->s.k = IPPROTO_ROUTING; + i++; + /* if (A == IPPROTO_FRAGMENT) goto v6advance; else goto ahcheck; */ + s[i - 1]->s.jf = s[i] = new_stmt(BPF_JMP|BPF_JEQ|BPF_K); + s[i]->s.jt = NULL; /*later*/ + s[i]->s.jf = NULL; /*later*/ + s[i]->s.k = IPPROTO_FRAGMENT; + fix3 = i; + v6end = i; + i++; + + /* v6advance: */ + v6advance = i; + + /* + * in short, + * A = P[X + packet head]; + * X = X + (P[X + packet head + 1] + 1) * 8; + */ + /* A = P[X + packet head] */ + s[i] = new_stmt(BPF_LD|BPF_IND|BPF_B); + s[i]->s.k = off_macpl + off_nl; + i++; + /* MEM[reg2] = A */ + s[i] = new_stmt(BPF_ST); + s[i]->s.k = reg2; + i++; + /* A = P[X + packet head + 1]; */ + s[i] = new_stmt(BPF_LD|BPF_IND|BPF_B); + s[i]->s.k = off_macpl + off_nl + 1; + i++; + /* A += 1 */ + s[i] = new_stmt(BPF_ALU|BPF_ADD|BPF_K); + s[i]->s.k = 1; + i++; + /* A *= 8 */ + s[i] = new_stmt(BPF_ALU|BPF_MUL|BPF_K); + s[i]->s.k = 8; + i++; + /* A += X */ + s[i] = new_stmt(BPF_ALU|BPF_ADD|BPF_X); + s[i]->s.k = 0; + i++; + /* X = A; */ + s[i] = new_stmt(BPF_MISC|BPF_TAX); + i++; + /* A = MEM[reg2] */ + s[i] = new_stmt(BPF_LD|BPF_MEM); + s[i]->s.k = reg2; + i++; + + /* goto again; (must use BPF_JA for backward jump) */ + s[i] = new_stmt(BPF_JMP|BPF_JA); + s[i]->s.k = again - i - 1; + s[i - 1]->s.jf = s[i]; + i++; + + /* fixup */ + for (j = v6start; j <= v6end; j++) + s[j]->s.jt = s[v6advance]; + } else +#endif + { + /* nop */ + s[i] = new_stmt(BPF_ALU|BPF_ADD|BPF_K); + s[i]->s.k = 0; + s[fix2]->s.jf = s[i]; + i++; + } + + /* ahcheck: */ + ahcheck = i; + /* if (A == IPPROTO_AH) then fall through; else goto end; */ + s[i] = new_stmt(BPF_JMP|BPF_JEQ|BPF_K); + s[i]->s.jt = NULL; /*later*/ + s[i]->s.jf = NULL; /*later*/ + s[i]->s.k = IPPROTO_AH; + if (fix3) + s[fix3]->s.jf = s[ahcheck]; + fix4 = i; + i++; + + /* + * in short, + * A = P[X]; + * X = X + (P[X + 1] + 2) * 4; + */ + /* A = X */ + s[i - 1]->s.jt = s[i] = new_stmt(BPF_MISC|BPF_TXA); + i++; + /* A = P[X + packet head]; */ + s[i] = new_stmt(BPF_LD|BPF_IND|BPF_B); + s[i]->s.k = off_macpl + off_nl; + i++; + /* MEM[reg2] = A */ + s[i] = new_stmt(BPF_ST); + s[i]->s.k = reg2; + i++; + /* A = X */ + s[i - 1]->s.jt = s[i] = new_stmt(BPF_MISC|BPF_TXA); + i++; + /* A += 1 */ + s[i] = new_stmt(BPF_ALU|BPF_ADD|BPF_K); + s[i]->s.k = 1; + i++; + /* X = A */ + s[i] = new_stmt(BPF_MISC|BPF_TAX); + i++; + /* A = P[X + packet head] */ + s[i] = new_stmt(BPF_LD|BPF_IND|BPF_B); + s[i]->s.k = off_macpl + off_nl; + i++; + /* A += 2 */ + s[i] = new_stmt(BPF_ALU|BPF_ADD|BPF_K); + s[i]->s.k = 2; + i++; + /* A *= 4 */ + s[i] = new_stmt(BPF_ALU|BPF_MUL|BPF_K); + s[i]->s.k = 4; + i++; + /* X = A; */ + s[i] = new_stmt(BPF_MISC|BPF_TAX); + i++; + /* A = MEM[reg2] */ + s[i] = new_stmt(BPF_LD|BPF_MEM); + s[i]->s.k = reg2; + i++; + + /* goto again; (must use BPF_JA for backward jump) */ + s[i] = new_stmt(BPF_JMP|BPF_JA); + s[i]->s.k = again - i - 1; + i++; + + /* end: nop */ + end = i; + s[i] = new_stmt(BPF_ALU|BPF_ADD|BPF_K); + s[i]->s.k = 0; + s[fix2]->s.jt = s[end]; + s[fix4]->s.jf = s[end]; + s[fix5]->s.jt = s[end]; + i++; + + /* + * make slist chain + */ + max = i; + for (i = 0; i < max - 1; i++) + s[i]->next = s[i + 1]; + s[max - 1]->next = NULL; + + /* + * emit final check + */ + b = new_block(JMP(BPF_JEQ)); + b->stmts = s[1]; /*remember, s[0] is dummy*/ + b->s.k = v; + + free_reg(reg2); + + gen_and(b0, b); + return b; +#endif +} + +static struct block * +gen_check_802_11_data_frame() +{ + struct slist *s; + struct block *b0, *b1; + + /* + * A data frame has the 0x08 bit (b3) in the frame control field set + * and the 0x04 bit (b2) clear. + */ + s = gen_load_a(OR_LINK, 0, BPF_B); + b0 = new_block(JMP(BPF_JSET)); + b0->s.k = 0x08; + b0->stmts = s; + + s = gen_load_a(OR_LINK, 0, BPF_B); + b1 = new_block(JMP(BPF_JSET)); + b1->s.k = 0x04; + b1->stmts = s; + gen_not(b1); + + gen_and(b1, b0); + + return b0; +} + +/* + * Generate code that checks whether the packet is a packet for protocol + * and whether the type field in that protocol's header has + * the value , e.g. if is Q_IP, it checks whether it's an + * IP packet and checks the protocol number in the IP header against . + * + * If is Q_DEFAULT, i.e. just "proto" was specified, it checks + * against Q_IP and Q_IPV6. + */ +static struct block * +gen_proto(v, proto, dir) + int v; + int proto; + int dir; +{ + struct block *b0, *b1; +#ifdef INET6 +#ifndef CHASE_CHAIN + struct block *b2; +#endif +#endif + + if (dir != Q_DEFAULT) + bpf_error("direction applied to 'proto'"); + + switch (proto) { + case Q_DEFAULT: +#ifdef INET6 + b0 = gen_proto(v, Q_IP, dir); + b1 = gen_proto(v, Q_IPV6, dir); + gen_or(b0, b1); + return b1; +#else + /*FALLTHROUGH*/ +#endif + case Q_IP: + /* + * For FDDI, RFC 1188 says that SNAP encapsulation is used, + * not LLC encapsulation with LLCSAP_IP. + * + * For IEEE 802 networks - which includes 802.5 token ring + * (which is what DLT_IEEE802 means) and 802.11 - RFC 1042 + * says that SNAP encapsulation is used, not LLC encapsulation + * with LLCSAP_IP. + * + * For LLC-encapsulated ATM/"Classical IP", RFC 1483 and + * RFC 2225 say that SNAP encapsulation is used, not LLC + * encapsulation with LLCSAP_IP. + * + * So we always check for ETHERTYPE_IP. + */ + b0 = gen_linktype(ETHERTYPE_IP); +#ifndef CHASE_CHAIN + b1 = gen_cmp(OR_NET, 9, BPF_B, (bpf_int32)v); +#else + b1 = gen_protochain(v, Q_IP); +#endif + gen_and(b0, b1); + return b1; + + case Q_ISO: + switch (linktype) { + + case DLT_FRELAY: + /* + * Frame Relay packets typically have an OSI + * NLPID at the beginning; "gen_linktype(LLCSAP_ISONS)" + * generates code to check for all the OSI + * NLPIDs, so calling it and then adding a check + * for the particular NLPID for which we're + * looking is bogus, as we can just check for + * the NLPID. + * + * What we check for is the NLPID and a frame + * control field value of UI, i.e. 0x03 followed + * by the NLPID. + * + * XXX - assumes a 2-byte Frame Relay header with + * DLCI and flags. What if the address is longer? + * + * XXX - what about SNAP-encapsulated frames? + */ + return gen_cmp(OR_LINK, 2, BPF_H, (0x03<<8) | v); + /*NOTREACHED*/ + break; + + case DLT_C_HDLC: + /* + * Cisco uses an Ethertype lookalike - for OSI, + * it's 0xfefe. + */ + b0 = gen_linktype(LLCSAP_ISONS<<8 | LLCSAP_ISONS); + /* OSI in C-HDLC is stuffed with a fudge byte */ + b1 = gen_cmp(OR_NET_NOSNAP, 1, BPF_B, (long)v); + gen_and(b0, b1); + return b1; + + default: + b0 = gen_linktype(LLCSAP_ISONS); + b1 = gen_cmp(OR_NET_NOSNAP, 0, BPF_B, (long)v); + gen_and(b0, b1); + return b1; + } + + case Q_ISIS: + b0 = gen_proto(ISO10589_ISIS, Q_ISO, Q_DEFAULT); + /* + * 4 is the offset of the PDU type relative to the IS-IS + * header. + */ + b1 = gen_cmp(OR_NET_NOSNAP, 4, BPF_B, (long)v); + gen_and(b0, b1); + return b1; + + case Q_ARP: + bpf_error("arp does not encapsulate another protocol"); + /* NOTREACHED */ + + case Q_RARP: + bpf_error("rarp does not encapsulate another protocol"); + /* NOTREACHED */ + + case Q_ATALK: + bpf_error("atalk encapsulation is not specifiable"); + /* NOTREACHED */ + + case Q_DECNET: + bpf_error("decnet encapsulation is not specifiable"); + /* NOTREACHED */ + + case Q_SCA: + bpf_error("sca does not encapsulate another protocol"); + /* NOTREACHED */ + + case Q_LAT: + bpf_error("lat does not encapsulate another protocol"); + /* NOTREACHED */ + + case Q_MOPRC: + bpf_error("moprc does not encapsulate another protocol"); + /* NOTREACHED */ + + case Q_MOPDL: + bpf_error("mopdl does not encapsulate another protocol"); + /* NOTREACHED */ + + case Q_LINK: + return gen_linktype(v); + + case Q_UDP: + bpf_error("'udp proto' is bogus"); + /* NOTREACHED */ + + case Q_TCP: + bpf_error("'tcp proto' is bogus"); + /* NOTREACHED */ + + case Q_SCTP: + bpf_error("'sctp proto' is bogus"); + /* NOTREACHED */ + + case Q_ICMP: + bpf_error("'icmp proto' is bogus"); + /* NOTREACHED */ + + case Q_IGMP: + bpf_error("'igmp proto' is bogus"); + /* NOTREACHED */ + + case Q_IGRP: + bpf_error("'igrp proto' is bogus"); + /* NOTREACHED */ + + case Q_PIM: + bpf_error("'pim proto' is bogus"); + /* NOTREACHED */ + + case Q_VRRP: + bpf_error("'vrrp proto' is bogus"); + /* NOTREACHED */ + + case Q_CARP: + bpf_error("'carp proto' is bogus"); + /* NOTREACHED */ + +#ifdef INET6 + case Q_IPV6: + b0 = gen_linktype(ETHERTYPE_IPV6); +#ifndef CHASE_CHAIN + /* + * Also check for a fragment header before the final + * header. + */ + b2 = gen_cmp(OR_NET, 6, BPF_B, IPPROTO_FRAGMENT); + b1 = gen_cmp(OR_NET, 40, BPF_B, (bpf_int32)v); + gen_and(b2, b1); + b2 = gen_cmp(OR_NET, 6, BPF_B, (bpf_int32)v); + gen_or(b2, b1); +#else + b1 = gen_protochain(v, Q_IPV6); +#endif + gen_and(b0, b1); + return b1; + + case Q_ICMPV6: + bpf_error("'icmp6 proto' is bogus"); +#endif /* INET6 */ + + case Q_AH: + bpf_error("'ah proto' is bogus"); + + case Q_ESP: + bpf_error("'ah proto' is bogus"); + + case Q_STP: + bpf_error("'stp proto' is bogus"); + + case Q_IPX: + bpf_error("'ipx proto' is bogus"); + + case Q_NETBEUI: + bpf_error("'netbeui proto' is bogus"); + + case Q_RADIO: + bpf_error("'radio proto' is bogus"); + + default: + abort(); + /* NOTREACHED */ + } + /* NOTREACHED */ +} + +struct block * +gen_scode(name, q) + register const char *name; + struct qual q; +{ + int proto = q.proto; + int dir = q.dir; + int tproto; + u_char *eaddr; + bpf_u_int32 mask, addr; +#ifndef INET6 + bpf_u_int32 **alist; +#else + int tproto6; + struct sockaddr_in *sin4; + struct sockaddr_in6 *sin6; + struct addrinfo *res, *res0; + struct in6_addr mask128; +#endif /*INET6*/ + struct block *b, *tmp; + int port, real_proto; + int port1, port2; + + switch (q.addr) { + + case Q_NET: + addr = pcap_nametonetaddr(name); + if (addr == 0) + bpf_error("unknown network '%s'", name); + /* Left justify network addr and calculate its network mask */ + mask = 0xffffffff; + while (addr && (addr & 0xff000000) == 0) { + addr <<= 8; + mask <<= 8; + } + return gen_host(addr, mask, proto, dir, q.addr); + + case Q_DEFAULT: + case Q_HOST: + if (proto == Q_LINK) { + switch (linktype) { + + case DLT_EN10MB: + case DLT_NETANALYZER: + case DLT_NETANALYZER_TRANSPARENT: + eaddr = pcap_ether_hostton(name); + if (eaddr == NULL) + bpf_error( + "unknown ether host '%s'", name); + b = gen_ehostop(eaddr, dir); + free(eaddr); + return b; + + case DLT_FDDI: + eaddr = pcap_ether_hostton(name); + if (eaddr == NULL) + bpf_error( + "unknown FDDI host '%s'", name); + b = gen_fhostop(eaddr, dir); + free(eaddr); + return b; + + case DLT_IEEE802: + eaddr = pcap_ether_hostton(name); + if (eaddr == NULL) + bpf_error( + "unknown token ring host '%s'", name); + b = gen_thostop(eaddr, dir); + free(eaddr); + return b; + + case DLT_IEEE802_11: + case DLT_PRISM_HEADER: + case DLT_IEEE802_11_RADIO_AVS: + case DLT_IEEE802_11_RADIO: + case DLT_PPI: + eaddr = pcap_ether_hostton(name); + if (eaddr == NULL) + bpf_error( + "unknown 802.11 host '%s'", name); + b = gen_wlanhostop(eaddr, dir); + free(eaddr); + return b; + + case DLT_IP_OVER_FC: + eaddr = pcap_ether_hostton(name); + if (eaddr == NULL) + bpf_error( + "unknown Fibre Channel host '%s'", name); + b = gen_ipfchostop(eaddr, dir); + free(eaddr); + return b; + + case DLT_SUNATM: + if (!is_lane) + break; + + /* + * Check that the packet doesn't begin + * with an LE Control marker. (We've + * already generated a test for LANE.) + */ + tmp = gen_cmp(OR_LINK, SUNATM_PKT_BEGIN_POS, + BPF_H, 0xFF00); + gen_not(tmp); + + eaddr = pcap_ether_hostton(name); + if (eaddr == NULL) + bpf_error( + "unknown ether host '%s'", name); + b = gen_ehostop(eaddr, dir); + gen_and(tmp, b); + free(eaddr); + return b; + } + + bpf_error("only ethernet/FDDI/token ring/802.11/ATM LANE/Fibre Channel supports link-level host name"); + } else if (proto == Q_DECNET) { + unsigned short dn_addr = __pcap_nametodnaddr(name); + /* + * I don't think DECNET hosts can be multihomed, so + * there is no need to build up a list of addresses + */ + return (gen_host(dn_addr, 0, proto, dir, q.addr)); + } else { +#ifndef INET6 + alist = pcap_nametoaddr(name); + if (alist == NULL || *alist == NULL) + bpf_error("unknown host '%s'", name); + tproto = proto; + if (off_linktype == (u_int)-1 && tproto == Q_DEFAULT) + tproto = Q_IP; + b = gen_host(**alist++, 0xffffffff, tproto, dir, q.addr); + while (*alist) { + tmp = gen_host(**alist++, 0xffffffff, + tproto, dir, q.addr); + gen_or(b, tmp); + b = tmp; + } + return b; +#else + memset(&mask128, 0xff, sizeof(mask128)); + res0 = res = pcap_nametoaddrinfo(name); + if (res == NULL) + bpf_error("unknown host '%s'", name); + ai = res; + b = tmp = NULL; + tproto = tproto6 = proto; + if (off_linktype == -1 && tproto == Q_DEFAULT) { + tproto = Q_IP; + tproto6 = Q_IPV6; + } + for (res = res0; res; res = res->ai_next) { + switch (res->ai_family) { + case AF_INET: + if (tproto == Q_IPV6) + continue; + + sin4 = (struct sockaddr_in *) + res->ai_addr; + tmp = gen_host(ntohl(sin4->sin_addr.s_addr), + 0xffffffff, tproto, dir, q.addr); + break; + case AF_INET6: + if (tproto6 == Q_IP) + continue; + + sin6 = (struct sockaddr_in6 *) + res->ai_addr; + tmp = gen_host6(&sin6->sin6_addr, + &mask128, tproto6, dir, q.addr); + break; + default: + continue; + } + if (b) + gen_or(b, tmp); + b = tmp; + } + ai = NULL; + freeaddrinfo(res0); + if (b == NULL) { + bpf_error("unknown host '%s'%s", name, + (proto == Q_DEFAULT) + ? "" + : " for specified address family"); + } + return b; +#endif /*INET6*/ + } + + case Q_PORT: + if (proto != Q_DEFAULT && + proto != Q_UDP && proto != Q_TCP && proto != Q_SCTP) + bpf_error("illegal qualifier of 'port'"); + if (pcap_nametoport(name, &port, &real_proto) == 0) + bpf_error("unknown port '%s'", name); + if (proto == Q_UDP) { + if (real_proto == IPPROTO_TCP) + bpf_error("port '%s' is tcp", name); + else if (real_proto == IPPROTO_SCTP) + bpf_error("port '%s' is sctp", name); + else + /* override PROTO_UNDEF */ + real_proto = IPPROTO_UDP; + } + if (proto == Q_TCP) { + if (real_proto == IPPROTO_UDP) + bpf_error("port '%s' is udp", name); + + else if (real_proto == IPPROTO_SCTP) + bpf_error("port '%s' is sctp", name); + else + /* override PROTO_UNDEF */ + real_proto = IPPROTO_TCP; + } + if (proto == Q_SCTP) { + if (real_proto == IPPROTO_UDP) + bpf_error("port '%s' is udp", name); + + else if (real_proto == IPPROTO_TCP) + bpf_error("port '%s' is tcp", name); + else + /* override PROTO_UNDEF */ + real_proto = IPPROTO_SCTP; + } + if (port < 0) + bpf_error("illegal port number %d < 0", port); + if (port > 65535) + bpf_error("illegal port number %d > 65535", port); +#ifndef INET6 + return gen_port(port, real_proto, dir); +#else + b = gen_port(port, real_proto, dir); + gen_or(gen_port6(port, real_proto, dir), b); + return b; +#endif /* INET6 */ + + case Q_PORTRANGE: + if (proto != Q_DEFAULT && + proto != Q_UDP && proto != Q_TCP && proto != Q_SCTP) + bpf_error("illegal qualifier of 'portrange'"); + if (pcap_nametoportrange(name, &port1, &port2, &real_proto) == 0) + bpf_error("unknown port in range '%s'", name); + if (proto == Q_UDP) { + if (real_proto == IPPROTO_TCP) + bpf_error("port in range '%s' is tcp", name); + else if (real_proto == IPPROTO_SCTP) + bpf_error("port in range '%s' is sctp", name); + else + /* override PROTO_UNDEF */ + real_proto = IPPROTO_UDP; + } + if (proto == Q_TCP) { + if (real_proto == IPPROTO_UDP) + bpf_error("port in range '%s' is udp", name); + else if (real_proto == IPPROTO_SCTP) + bpf_error("port in range '%s' is sctp", name); + else + /* override PROTO_UNDEF */ + real_proto = IPPROTO_TCP; + } + if (proto == Q_SCTP) { + if (real_proto == IPPROTO_UDP) + bpf_error("port in range '%s' is udp", name); + else if (real_proto == IPPROTO_TCP) + bpf_error("port in range '%s' is tcp", name); + else + /* override PROTO_UNDEF */ + real_proto = IPPROTO_SCTP; + } + if (port1 < 0) + bpf_error("illegal port number %d < 0", port1); + if (port1 > 65535) + bpf_error("illegal port number %d > 65535", port1); + if (port2 < 0) + bpf_error("illegal port number %d < 0", port2); + if (port2 > 65535) + bpf_error("illegal port number %d > 65535", port2); + +#ifndef INET6 + return gen_portrange(port1, port2, real_proto, dir); +#else + b = gen_portrange(port1, port2, real_proto, dir); + gen_or(gen_portrange6(port1, port2, real_proto, dir), b); + return b; +#endif /* INET6 */ + + case Q_GATEWAY: +#ifndef INET6 + eaddr = pcap_ether_hostton(name); + if (eaddr == NULL) + bpf_error("unknown ether host: %s", name); + + alist = pcap_nametoaddr(name); + if (alist == NULL || *alist == NULL) + bpf_error("unknown host '%s'", name); + b = gen_gateway(eaddr, alist, proto, dir); + free(eaddr); + return b; +#else + bpf_error("'gateway' not supported in this configuration"); +#endif /*INET6*/ + + case Q_PROTO: + real_proto = lookup_proto(name, proto); + if (real_proto >= 0) + return gen_proto(real_proto, proto, dir); + else + bpf_error("unknown protocol: %s", name); + + case Q_PROTOCHAIN: + real_proto = lookup_proto(name, proto); + if (real_proto >= 0) + return gen_protochain(real_proto, proto, dir); + else + bpf_error("unknown protocol: %s", name); + + case Q_UNDEF: + syntax(); + /* NOTREACHED */ + } + abort(); + /* NOTREACHED */ +} + +struct block * +gen_mcode(s1, s2, masklen, q) + register const char *s1, *s2; + register int masklen; + struct qual q; +{ + register int nlen, mlen; + bpf_u_int32 n, m; + + nlen = __pcap_atoin(s1, &n); + /* Promote short ipaddr */ + n <<= 32 - nlen; + + if (s2 != NULL) { + mlen = __pcap_atoin(s2, &m); + /* Promote short ipaddr */ + m <<= 32 - mlen; + if ((n & ~m) != 0) + bpf_error("non-network bits set in \"%s mask %s\"", + s1, s2); + } else { + /* Convert mask len to mask */ + if (masklen > 32) + bpf_error("mask length must be <= 32"); + if (masklen == 0) { + /* + * X << 32 is not guaranteed by C to be 0; it's + * undefined. + */ + m = 0; + } else + m = 0xffffffff << (32 - masklen); + if ((n & ~m) != 0) + bpf_error("non-network bits set in \"%s/%d\"", + s1, masklen); + } + + switch (q.addr) { + + case Q_NET: + return gen_host(n, m, q.proto, q.dir, q.addr); + + default: + bpf_error("Mask syntax for networks only"); + /* NOTREACHED */ + } + /* NOTREACHED */ + return NULL; +} + +struct block * +gen_ncode(s, v, q) + register const char *s; + bpf_u_int32 v; + struct qual q; +{ + bpf_u_int32 mask; + int proto = q.proto; + int dir = q.dir; + register int vlen; + + if (s == NULL) + vlen = 32; + else if (q.proto == Q_DECNET) + vlen = __pcap_atodn(s, &v); + else + vlen = __pcap_atoin(s, &v); + + switch (q.addr) { + + case Q_DEFAULT: + case Q_HOST: + case Q_NET: + if (proto == Q_DECNET) + return gen_host(v, 0, proto, dir, q.addr); + else if (proto == Q_LINK) { + bpf_error("illegal link layer address"); + } else { + mask = 0xffffffff; + if (s == NULL && q.addr == Q_NET) { + /* Promote short net number */ + while (v && (v & 0xff000000) == 0) { + v <<= 8; + mask <<= 8; + } + } else { + /* Promote short ipaddr */ + v <<= 32 - vlen; + mask <<= 32 - vlen; + } + return gen_host(v, mask, proto, dir, q.addr); + } + + case Q_PORT: + if (proto == Q_UDP) + proto = IPPROTO_UDP; + else if (proto == Q_TCP) + proto = IPPROTO_TCP; + else if (proto == Q_SCTP) + proto = IPPROTO_SCTP; + else if (proto == Q_DEFAULT) + proto = PROTO_UNDEF; + else + bpf_error("illegal qualifier of 'port'"); + + if (v > 65535) + bpf_error("illegal port number %u > 65535", v); + +#ifndef INET6 + return gen_port((int)v, proto, dir); +#else + { + struct block *b; + b = gen_port((int)v, proto, dir); + gen_or(gen_port6((int)v, proto, dir), b); + return b; + } +#endif /* INET6 */ + + case Q_PORTRANGE: + if (proto == Q_UDP) + proto = IPPROTO_UDP; + else if (proto == Q_TCP) + proto = IPPROTO_TCP; + else if (proto == Q_SCTP) + proto = IPPROTO_SCTP; + else if (proto == Q_DEFAULT) + proto = PROTO_UNDEF; + else + bpf_error("illegal qualifier of 'portrange'"); + + if (v > 65535) + bpf_error("illegal port number %u > 65535", v); + +#ifndef INET6 + return gen_portrange((int)v, (int)v, proto, dir); +#else + { + struct block *b; + b = gen_portrange((int)v, (int)v, proto, dir); + gen_or(gen_portrange6((int)v, (int)v, proto, dir), b); + return b; + } +#endif /* INET6 */ + + case Q_GATEWAY: + bpf_error("'gateway' requires a name"); + /* NOTREACHED */ + + case Q_PROTO: + return gen_proto((int)v, proto, dir); + + case Q_PROTOCHAIN: + return gen_protochain((int)v, proto, dir); + + case Q_UNDEF: + syntax(); + /* NOTREACHED */ + + default: + abort(); + /* NOTREACHED */ + } + /* NOTREACHED */ +} + +#ifdef INET6 +struct block * +gen_mcode6(s1, s2, masklen, q) + register const char *s1, *s2; + register int masklen; + struct qual q; +{ + struct addrinfo *res; + struct in6_addr *addr; + struct in6_addr mask; + struct block *b; + u_int32_t *a, *m; + + if (s2) + bpf_error("no mask %s supported", s2); + + res = pcap_nametoaddrinfo(s1); + if (!res) + bpf_error("invalid ip6 address %s", s1); + ai = res; + if (res->ai_next) + bpf_error("%s resolved to multiple address", s1); + addr = &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; + + if (sizeof(mask) * 8 < masklen) + bpf_error("mask length must be <= %u", (unsigned int)(sizeof(mask) * 8)); + memset(&mask, 0, sizeof(mask)); + memset(&mask, 0xff, masklen / 8); + if (masklen % 8) { + mask.s6_addr[masklen / 8] = + (0xff << (8 - masklen % 8)) & 0xff; + } + + a = (u_int32_t *)addr; + m = (u_int32_t *)&mask; + if ((a[0] & ~m[0]) || (a[1] & ~m[1]) + || (a[2] & ~m[2]) || (a[3] & ~m[3])) { + bpf_error("non-network bits set in \"%s/%d\"", s1, masklen); + } + + switch (q.addr) { + + case Q_DEFAULT: + case Q_HOST: + if (masklen != 128) + bpf_error("Mask syntax for networks only"); + /* FALLTHROUGH */ + + case Q_NET: + b = gen_host6(addr, &mask, q.proto, q.dir, q.addr); + ai = NULL; + freeaddrinfo(res); + return b; + + default: + bpf_error("invalid qualifier against IPv6 address"); + /* NOTREACHED */ + } + return NULL; +} +#endif /*INET6*/ + +struct block * +gen_ecode(eaddr, q) + register const u_char *eaddr; + struct qual q; +{ + struct block *b, *tmp; + + if ((q.addr == Q_HOST || q.addr == Q_DEFAULT) && q.proto == Q_LINK) { + switch (linktype) { + case DLT_EN10MB: + case DLT_NETANALYZER: + case DLT_NETANALYZER_TRANSPARENT: + return gen_ehostop(eaddr, (int)q.dir); + case DLT_FDDI: + return gen_fhostop(eaddr, (int)q.dir); + case DLT_IEEE802: + return gen_thostop(eaddr, (int)q.dir); + case DLT_IEEE802_11: + case DLT_PRISM_HEADER: + case DLT_IEEE802_11_RADIO_AVS: + case DLT_IEEE802_11_RADIO: + case DLT_PPI: + return gen_wlanhostop(eaddr, (int)q.dir); + case DLT_SUNATM: + if (is_lane) { + /* + * Check that the packet doesn't begin with an + * LE Control marker. (We've already generated + * a test for LANE.) + */ + tmp = gen_cmp(OR_LINK, SUNATM_PKT_BEGIN_POS, BPF_H, + 0xFF00); + gen_not(tmp); + + /* + * Now check the MAC address. + */ + b = gen_ehostop(eaddr, (int)q.dir); + gen_and(tmp, b); + return b; + } + break; + case DLT_IP_OVER_FC: + return gen_ipfchostop(eaddr, (int)q.dir); + default: + bpf_error("ethernet addresses supported only on ethernet/FDDI/token ring/802.11/ATM LANE/Fibre Channel"); + break; + } + } + bpf_error("ethernet address used in non-ether expression"); + /* NOTREACHED */ + return NULL; +} + +void +sappend(s0, s1) + struct slist *s0, *s1; +{ + /* + * This is definitely not the best way to do this, but the + * lists will rarely get long. + */ + while (s0->next) + s0 = s0->next; + s0->next = s1; +} + +static struct slist * +xfer_to_x(a) + struct arth *a; +{ + struct slist *s; + + s = new_stmt(BPF_LDX|BPF_MEM); + s->s.k = a->regno; + return s; +} + +static struct slist * +xfer_to_a(a) + struct arth *a; +{ + struct slist *s; + + s = new_stmt(BPF_LD|BPF_MEM); + s->s.k = a->regno; + return s; +} + +/* + * Modify "index" to use the value stored into its register as an + * offset relative to the beginning of the header for the protocol + * "proto", and allocate a register and put an item "size" bytes long + * (1, 2, or 4) at that offset into that register, making it the register + * for "index". + */ +struct arth * +gen_load(proto, inst, size) + int proto; + struct arth *inst; + int size; +{ + struct slist *s, *tmp; + struct block *b; + int regno = alloc_reg(); + + free_reg(inst->regno); + switch (size) { + + default: + bpf_error("data size must be 1, 2, or 4"); + + case 1: + size = BPF_B; + break; + + case 2: + size = BPF_H; + break; + + case 4: + size = BPF_W; + break; + } + switch (proto) { + default: + bpf_error("unsupported index operation"); + + case Q_RADIO: + /* + * The offset is relative to the beginning of the packet + * data, if we have a radio header. (If we don't, this + * is an error.) + */ + if (linktype != DLT_IEEE802_11_RADIO_AVS && + linktype != DLT_IEEE802_11_RADIO && + linktype != DLT_PRISM_HEADER) + bpf_error("radio information not present in capture"); + + /* + * Load into the X register the offset computed into the + * register specified by "index". + */ + s = xfer_to_x(inst); + + /* + * Load the item at that offset. + */ + tmp = new_stmt(BPF_LD|BPF_IND|size); + sappend(s, tmp); + sappend(inst->s, s); + break; + + case Q_LINK: + /* + * The offset is relative to the beginning of + * the link-layer header. + * + * XXX - what about ATM LANE? Should the index be + * relative to the beginning of the AAL5 frame, so + * that 0 refers to the beginning of the LE Control + * field, or relative to the beginning of the LAN + * frame, so that 0 refers, for Ethernet LANE, to + * the beginning of the destination address? + */ + s = gen_llprefixlen(); + + /* + * If "s" is non-null, it has code to arrange that the + * X register contains the length of the prefix preceding + * the link-layer header. Add to it the offset computed + * into the register specified by "index", and move that + * into the X register. Otherwise, just load into the X + * register the offset computed into the register specified + * by "index". + */ + if (s != NULL) { + sappend(s, xfer_to_a(inst)); + sappend(s, new_stmt(BPF_ALU|BPF_ADD|BPF_X)); + sappend(s, new_stmt(BPF_MISC|BPF_TAX)); + } else + s = xfer_to_x(inst); + + /* + * Load the item at the sum of the offset we've put in the + * X register and the offset of the start of the link + * layer header (which is 0 if the radio header is + * variable-length; that header length is what we put + * into the X register and then added to the index). + */ + tmp = new_stmt(BPF_LD|BPF_IND|size); + tmp->s.k = off_ll; + sappend(s, tmp); + sappend(inst->s, s); + break; + + case Q_IP: + case Q_ARP: + case Q_RARP: + case Q_ATALK: + case Q_DECNET: + case Q_SCA: + case Q_LAT: + case Q_MOPRC: + case Q_MOPDL: +#ifdef INET6 + case Q_IPV6: +#endif + /* + * The offset is relative to the beginning of + * the network-layer header. + * XXX - are there any cases where we want + * off_nl_nosnap? + */ + s = gen_off_macpl(); + + /* + * If "s" is non-null, it has code to arrange that the + * X register contains the offset of the MAC-layer + * payload. Add to it the offset computed into the + * register specified by "index", and move that into + * the X register. Otherwise, just load into the X + * register the offset computed into the register specified + * by "index". + */ + if (s != NULL) { + sappend(s, xfer_to_a(inst)); + sappend(s, new_stmt(BPF_ALU|BPF_ADD|BPF_X)); + sappend(s, new_stmt(BPF_MISC|BPF_TAX)); + } else + s = xfer_to_x(inst); + + /* + * Load the item at the sum of the offset we've put in the + * X register, the offset of the start of the network + * layer header from the beginning of the MAC-layer + * payload, and the purported offset of the start of the + * MAC-layer payload (which might be 0 if there's a + * variable-length prefix before the link-layer header + * or the link-layer header itself is variable-length; + * the variable-length offset of the start of the + * MAC-layer payload is what we put into the X register + * and then added to the index). + */ + tmp = new_stmt(BPF_LD|BPF_IND|size); + tmp->s.k = off_macpl + off_nl; + sappend(s, tmp); + sappend(inst->s, s); + + /* + * Do the computation only if the packet contains + * the protocol in question. + */ + b = gen_proto_abbrev(proto); + if (inst->b) + gen_and(inst->b, b); + inst->b = b; + break; + + case Q_SCTP: + case Q_TCP: + case Q_UDP: + case Q_ICMP: + case Q_IGMP: + case Q_IGRP: + case Q_PIM: + case Q_VRRP: + case Q_CARP: + /* + * The offset is relative to the beginning of + * the transport-layer header. + * + * Load the X register with the length of the IPv4 header + * (plus the offset of the link-layer header, if it's + * a variable-length header), in bytes. + * + * XXX - are there any cases where we want + * off_nl_nosnap? + * XXX - we should, if we're built with + * IPv6 support, generate code to load either + * IPv4, IPv6, or both, as appropriate. + */ + s = gen_loadx_iphdrlen(); + + /* + * The X register now contains the sum of the length + * of any variable-length header preceding the link-layer + * header, any variable-length link-layer header, and the + * length of the network-layer header. + * + * Load into the A register the offset relative to + * the beginning of the transport layer header, + * add the X register to that, move that to the + * X register, and load with an offset from the + * X register equal to the offset of the network + * layer header relative to the beginning of + * the MAC-layer payload plus the fixed-length + * portion of the offset of the MAC-layer payload + * from the beginning of the raw packet data. + */ + sappend(s, xfer_to_a(inst)); + sappend(s, new_stmt(BPF_ALU|BPF_ADD|BPF_X)); + sappend(s, new_stmt(BPF_MISC|BPF_TAX)); + sappend(s, tmp = new_stmt(BPF_LD|BPF_IND|size)); + tmp->s.k = off_macpl + off_nl; + sappend(inst->s, s); + + /* + * Do the computation only if the packet contains + * the protocol in question - which is true only + * if this is an IP datagram and is the first or + * only fragment of that datagram. + */ + gen_and(gen_proto_abbrev(proto), b = gen_ipfrag()); + if (inst->b) + gen_and(inst->b, b); +#ifdef INET6 + gen_and(gen_proto_abbrev(Q_IP), b); +#endif + inst->b = b; + break; +#ifdef INET6 + case Q_ICMPV6: + bpf_error("IPv6 upper-layer protocol is not supported by proto[x]"); + /*NOTREACHED*/ +#endif + } + inst->regno = regno; + s = new_stmt(BPF_ST); + s->s.k = regno; + sappend(inst->s, s); + + return inst; +} + +struct block * +gen_relation(code, a0, a1, reversed) + int code; + struct arth *a0, *a1; + int reversed; +{ + struct slist *s0, *s1, *s2; + struct block *b, *tmp; + + s0 = xfer_to_x(a1); + s1 = xfer_to_a(a0); + if (code == BPF_JEQ) { + s2 = new_stmt(BPF_ALU|BPF_SUB|BPF_X); + b = new_block(JMP(code)); + sappend(s1, s2); + } + else + b = new_block(BPF_JMP|code|BPF_X); + if (reversed) + gen_not(b); + + sappend(s0, s1); + sappend(a1->s, s0); + sappend(a0->s, a1->s); + + b->stmts = a0->s; + + free_reg(a0->regno); + free_reg(a1->regno); + + /* 'and' together protocol checks */ + if (a0->b) { + if (a1->b) { + gen_and(a0->b, tmp = a1->b); + } + else + tmp = a0->b; + } else + tmp = a1->b; + + if (tmp) + gen_and(tmp, b); + + return b; +} + +struct arth * +gen_loadlen() +{ + int regno = alloc_reg(); + struct arth *a = (struct arth *)newchunk(sizeof(*a)); + struct slist *s; + + s = new_stmt(BPF_LD|BPF_LEN); + s->next = new_stmt(BPF_ST); + s->next->s.k = regno; + a->s = s; + a->regno = regno; + + return a; +} + +struct arth * +gen_loadi(val) + int val; +{ + struct arth *a; + struct slist *s; + int reg; + + a = (struct arth *)newchunk(sizeof(*a)); + + reg = alloc_reg(); + + s = new_stmt(BPF_LD|BPF_IMM); + s->s.k = val; + s->next = new_stmt(BPF_ST); + s->next->s.k = reg; + a->s = s; + a->regno = reg; + + return a; +} + +struct arth * +gen_neg(a) + struct arth *a; +{ + struct slist *s; + + s = xfer_to_a(a); + sappend(a->s, s); + s = new_stmt(BPF_ALU|BPF_NEG); + s->s.k = 0; + sappend(a->s, s); + s = new_stmt(BPF_ST); + s->s.k = a->regno; + sappend(a->s, s); + + return a; +} + +struct arth * +gen_arth(code, a0, a1) + int code; + struct arth *a0, *a1; +{ + struct slist *s0, *s1, *s2; + + s0 = xfer_to_x(a1); + s1 = xfer_to_a(a0); + s2 = new_stmt(BPF_ALU|BPF_X|code); + + sappend(s1, s2); + sappend(s0, s1); + sappend(a1->s, s0); + sappend(a0->s, a1->s); + + free_reg(a0->regno); + free_reg(a1->regno); + + s0 = new_stmt(BPF_ST); + a0->regno = s0->s.k = alloc_reg(); + sappend(a0->s, s0); + + return a0; +} + +/* + * Here we handle simple allocation of the scratch registers. + * If too many registers are alloc'd, the allocator punts. + */ +static int regused[BPF_MEMWORDS]; +static int curreg; + +/* + * Initialize the table of used registers and the current register. + */ +static void +init_regs() +{ + curreg = 0; + memset(regused, 0, sizeof regused); +} + +/* + * Return the next free register. + */ +static int +alloc_reg() +{ + int n = BPF_MEMWORDS; + + while (--n >= 0) { + if (regused[curreg]) + curreg = (curreg + 1) % BPF_MEMWORDS; + else { + regused[curreg] = 1; + return curreg; + } + } + bpf_error("too many registers needed to evaluate expression"); + /* NOTREACHED */ + return 0; +} + +/* + * Return a register to the table so it can + * be used later. + */ +static void +free_reg(n) + int n; +{ + regused[n] = 0; +} + +static struct block * +gen_len(jmp, n) + int jmp, n; +{ + struct slist *s; + struct block *b; + + s = new_stmt(BPF_LD|BPF_LEN); + b = new_block(JMP(jmp)); + b->stmts = s; + b->s.k = n; + + return b; +} + +struct block * +gen_greater(n) + int n; +{ + return gen_len(BPF_JGE, n); +} + +/* + * Actually, this is less than or equal. + */ +struct block * +gen_less(n) + int n; +{ + struct block *b; + + b = gen_len(BPF_JGT, n); + gen_not(b); + + return b; +} + +/* + * This is for "byte {idx} {op} {val}"; "idx" is treated as relative to + * the beginning of the link-layer header. + * XXX - that means you can't test values in the radiotap header, but + * as that header is difficult if not impossible to parse generally + * without a loop, that might not be a severe problem. A new keyword + * "radio" could be added for that, although what you'd really want + * would be a way of testing particular radio header values, which + * would generate code appropriate to the radio header in question. + */ +struct block * +gen_byteop(op, idx, val) + int op, idx, val; +{ + struct block *b; + struct slist *s; + + switch (op) { + default: + abort(); + + case '=': + return gen_cmp(OR_LINK, (u_int)idx, BPF_B, (bpf_int32)val); + + case '<': + b = gen_cmp_lt(OR_LINK, (u_int)idx, BPF_B, (bpf_int32)val); + return b; + + case '>': + b = gen_cmp_gt(OR_LINK, (u_int)idx, BPF_B, (bpf_int32)val); + return b; + + case '|': + s = new_stmt(BPF_ALU|BPF_OR|BPF_K); + break; + + case '&': + s = new_stmt(BPF_ALU|BPF_AND|BPF_K); + break; + } + s->s.k = val; + b = new_block(JMP(BPF_JEQ)); + b->stmts = s; + gen_not(b); + + return b; +} + +static u_char abroadcast[] = { 0x0 }; + +struct block * +gen_broadcast(proto) + int proto; +{ + bpf_u_int32 hostmask; + struct block *b0, *b1, *b2; + static u_char ebroadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; + + switch (proto) { + + case Q_DEFAULT: + case Q_LINK: + switch (linktype) { + case DLT_ARCNET: + case DLT_ARCNET_LINUX: + return gen_ahostop(abroadcast, Q_DST); + case DLT_EN10MB: + case DLT_NETANALYZER: + case DLT_NETANALYZER_TRANSPARENT: + return gen_ehostop(ebroadcast, Q_DST); + case DLT_FDDI: + return gen_fhostop(ebroadcast, Q_DST); + case DLT_IEEE802: + return gen_thostop(ebroadcast, Q_DST); + case DLT_IEEE802_11: + case DLT_PRISM_HEADER: + case DLT_IEEE802_11_RADIO_AVS: + case DLT_IEEE802_11_RADIO: + case DLT_PPI: + return gen_wlanhostop(ebroadcast, Q_DST); + case DLT_IP_OVER_FC: + return gen_ipfchostop(ebroadcast, Q_DST); + case DLT_SUNATM: + if (is_lane) { + /* + * Check that the packet doesn't begin with an + * LE Control marker. (We've already generated + * a test for LANE.) + */ + b1 = gen_cmp(OR_LINK, SUNATM_PKT_BEGIN_POS, + BPF_H, 0xFF00); + gen_not(b1); + + /* + * Now check the MAC address. + */ + b0 = gen_ehostop(ebroadcast, Q_DST); + gen_and(b1, b0); + return b0; + } + break; + default: + bpf_error("not a broadcast link"); + } + break; + + case Q_IP: + /* + * We treat a netmask of PCAP_NETMASK_UNKNOWN (0xffffffff) + * as an indication that we don't know the netmask, and fail + * in that case. + */ + if (netmask == PCAP_NETMASK_UNKNOWN) + bpf_error("netmask not known, so 'ip broadcast' not supported"); + b0 = gen_linktype(ETHERTYPE_IP); + hostmask = ~netmask; + b1 = gen_mcmp(OR_NET, 16, BPF_W, (bpf_int32)0, hostmask); + b2 = gen_mcmp(OR_NET, 16, BPF_W, + (bpf_int32)(~0 & hostmask), hostmask); + gen_or(b1, b2); + gen_and(b0, b2); + return b2; + } + bpf_error("only link-layer/IP broadcast filters supported"); + /* NOTREACHED */ + return NULL; +} + +/* + * Generate code to test the low-order bit of a MAC address (that's + * the bottom bit of the *first* byte). + */ +static struct block * +gen_mac_multicast(offset) + int offset; +{ + register struct block *b0; + register struct slist *s; + + /* link[offset] & 1 != 0 */ + s = gen_load_a(OR_LINK, offset, BPF_B); + b0 = new_block(JMP(BPF_JSET)); + b0->s.k = 1; + b0->stmts = s; + return b0; +} + +struct block * +gen_multicast(proto) + int proto; +{ + register struct block *b0, *b1, *b2; + register struct slist *s; + + switch (proto) { + + case Q_DEFAULT: + case Q_LINK: + switch (linktype) { + case DLT_ARCNET: + case DLT_ARCNET_LINUX: + /* all ARCnet multicasts use the same address */ + return gen_ahostop(abroadcast, Q_DST); + case DLT_EN10MB: + case DLT_NETANALYZER: + case DLT_NETANALYZER_TRANSPARENT: + /* ether[0] & 1 != 0 */ + return gen_mac_multicast(0); + case DLT_FDDI: + /* + * XXX TEST THIS: MIGHT NOT PORT PROPERLY XXX + * + * XXX - was that referring to bit-order issues? + */ + /* fddi[1] & 1 != 0 */ + return gen_mac_multicast(1); + case DLT_IEEE802: + /* tr[2] & 1 != 0 */ + return gen_mac_multicast(2); + case DLT_IEEE802_11: + case DLT_PRISM_HEADER: + case DLT_IEEE802_11_RADIO_AVS: + case DLT_IEEE802_11_RADIO: + case DLT_PPI: + /* + * Oh, yuk. + * + * For control frames, there is no DA. + * + * For management frames, DA is at an + * offset of 4 from the beginning of + * the packet. + * + * For data frames, DA is at an offset + * of 4 from the beginning of the packet + * if To DS is clear and at an offset of + * 16 from the beginning of the packet + * if To DS is set. + */ + + /* + * Generate the tests to be done for data frames. + * + * First, check for To DS set, i.e. "link[1] & 0x01". + */ + s = gen_load_a(OR_LINK, 1, BPF_B); + b1 = new_block(JMP(BPF_JSET)); + b1->s.k = 0x01; /* To DS */ + b1->stmts = s; + + /* + * If To DS is set, the DA is at 16. + */ + b0 = gen_mac_multicast(16); + gen_and(b1, b0); + + /* + * Now, check for To DS not set, i.e. check + * "!(link[1] & 0x01)". + */ + s = gen_load_a(OR_LINK, 1, BPF_B); + b2 = new_block(JMP(BPF_JSET)); + b2->s.k = 0x01; /* To DS */ + b2->stmts = s; + gen_not(b2); + + /* + * If To DS is not set, the DA is at 4. + */ + b1 = gen_mac_multicast(4); + gen_and(b2, b1); + + /* + * Now OR together the last two checks. That gives + * the complete set of checks for data frames. + */ + gen_or(b1, b0); + + /* + * Now check for a data frame. + * I.e, check "link[0] & 0x08". + */ + s = gen_load_a(OR_LINK, 0, BPF_B); + b1 = new_block(JMP(BPF_JSET)); + b1->s.k = 0x08; + b1->stmts = s; + + /* + * AND that with the checks done for data frames. + */ + gen_and(b1, b0); + + /* + * If the high-order bit of the type value is 0, this + * is a management frame. + * I.e, check "!(link[0] & 0x08)". + */ + s = gen_load_a(OR_LINK, 0, BPF_B); + b2 = new_block(JMP(BPF_JSET)); + b2->s.k = 0x08; + b2->stmts = s; + gen_not(b2); + + /* + * For management frames, the DA is at 4. + */ + b1 = gen_mac_multicast(4); + gen_and(b2, b1); + + /* + * OR that with the checks done for data frames. + * That gives the checks done for management and + * data frames. + */ + gen_or(b1, b0); + + /* + * If the low-order bit of the type value is 1, + * this is either a control frame or a frame + * with a reserved type, and thus not a + * frame with an SA. + * + * I.e., check "!(link[0] & 0x04)". + */ + s = gen_load_a(OR_LINK, 0, BPF_B); + b1 = new_block(JMP(BPF_JSET)); + b1->s.k = 0x04; + b1->stmts = s; + gen_not(b1); + + /* + * AND that with the checks for data and management + * frames. + */ + gen_and(b1, b0); + return b0; + case DLT_IP_OVER_FC: + b0 = gen_mac_multicast(2); + return b0; + case DLT_SUNATM: + if (is_lane) { + /* + * Check that the packet doesn't begin with an + * LE Control marker. (We've already generated + * a test for LANE.) + */ + b1 = gen_cmp(OR_LINK, SUNATM_PKT_BEGIN_POS, + BPF_H, 0xFF00); + gen_not(b1); + + /* ether[off_mac] & 1 != 0 */ + b0 = gen_mac_multicast(off_mac); + gen_and(b1, b0); + return b0; + } + break; + default: + break; + } + /* Link not known to support multicasts */ + break; + + case Q_IP: + b0 = gen_linktype(ETHERTYPE_IP); + b1 = gen_cmp_ge(OR_NET, 16, BPF_B, (bpf_int32)224); + gen_and(b0, b1); + return b1; + +#ifdef INET6 + case Q_IPV6: + b0 = gen_linktype(ETHERTYPE_IPV6); + b1 = gen_cmp(OR_NET, 24, BPF_B, (bpf_int32)255); + gen_and(b0, b1); + return b1; +#endif /* INET6 */ + } + bpf_error("link-layer multicast filters supported only on ethernet/FDDI/token ring/ARCNET/802.11/ATM LANE/Fibre Channel"); + /* NOTREACHED */ + return NULL; +} + +/* + * Filter on inbound (dir == 0) or outbound (dir == 1) traffic. + * Outbound traffic is sent by this machine, while inbound traffic is + * sent by a remote machine (and may include packets destined for a + * unicast or multicast link-layer address we are not subscribing to). + * These are the same definitions implemented by pcap_setdirection(). + * Capturing only unicast traffic destined for this host is probably + * better accomplished using a higher-layer filter. + */ +struct block * +gen_inbound(dir) + int dir; +{ + register struct block *b0; + + /* + * Only some data link types support inbound/outbound qualifiers. + */ + switch (linktype) { + case DLT_SLIP: + b0 = gen_relation(BPF_JEQ, + gen_load(Q_LINK, gen_loadi(0), 1), + gen_loadi(0), + dir); + break; + + case DLT_IPNET: + if (dir) { + /* match outgoing packets */ + b0 = gen_cmp(OR_LINK, 2, BPF_H, IPNET_OUTBOUND); + } else { + /* match incoming packets */ + b0 = gen_cmp(OR_LINK, 2, BPF_H, IPNET_INBOUND); + } + break; + + case DLT_LINUX_SLL: + /* match outgoing packets */ + b0 = gen_cmp(OR_LINK, 0, BPF_H, LINUX_SLL_OUTGOING); + if (!dir) { + /* to filter on inbound traffic, invert the match */ + gen_not(b0); + } + break; + +#ifdef HAVE_NET_PFVAR_H + case DLT_PFLOG: + b0 = gen_cmp(OR_LINK, offsetof(struct pfloghdr, dir), BPF_B, + (bpf_int32)((dir == 0) ? PF_IN : PF_OUT)); + break; +#endif + + case DLT_PPP_PPPD: + if (dir) { + /* match outgoing packets */ + b0 = gen_cmp(OR_LINK, 0, BPF_B, PPP_PPPD_OUT); + } else { + /* match incoming packets */ + b0 = gen_cmp(OR_LINK, 0, BPF_B, PPP_PPPD_IN); + } + break; + + case DLT_JUNIPER_MFR: + case DLT_JUNIPER_MLFR: + case DLT_JUNIPER_MLPPP: + case DLT_JUNIPER_ATM1: + case DLT_JUNIPER_ATM2: + case DLT_JUNIPER_PPPOE: + case DLT_JUNIPER_PPPOE_ATM: + case DLT_JUNIPER_GGSN: + case DLT_JUNIPER_ES: + case DLT_JUNIPER_MONITOR: + case DLT_JUNIPER_SERVICES: + case DLT_JUNIPER_ETHER: + case DLT_JUNIPER_PPP: + case DLT_JUNIPER_FRELAY: + case DLT_JUNIPER_CHDLC: + case DLT_JUNIPER_VP: + case DLT_JUNIPER_ST: + case DLT_JUNIPER_ISM: + case DLT_JUNIPER_VS: + case DLT_JUNIPER_SRX_E2E: + case DLT_JUNIPER_FIBRECHANNEL: + case DLT_JUNIPER_ATM_CEMIC: + + /* juniper flags (including direction) are stored + * the byte after the 3-byte magic number */ + if (dir) { + /* match outgoing packets */ + b0 = gen_mcmp(OR_LINK, 3, BPF_B, 0, 0x01); + } else { + /* match incoming packets */ + b0 = gen_mcmp(OR_LINK, 3, BPF_B, 1, 0x01); + } + break; + + default: + /* + * If we have packet meta-data indicating a direction, + * check it, otherwise give up as this link-layer type + * has nothing in the packet data. + */ +#if defined(PF_PACKET) && defined(SO_ATTACH_FILTER) + /* + * We infer that this is Linux with PF_PACKET support. + * If this is a *live* capture, we can look at + * special meta-data in the filter expression; + * if it's a savefile, we can't. + */ + if (bpf_pcap->sf.rfile != NULL) { + /* We have a FILE *, so this is a savefile */ + bpf_error("inbound/outbound not supported on linktype %d when reading savefiles", + linktype); + b0 = NULL; + /* NOTREACHED */ + } + /* match outgoing packets */ + b0 = gen_cmp(OR_LINK, SKF_AD_OFF + SKF_AD_PKTTYPE, BPF_H, + PACKET_OUTGOING); + if (!dir) { + /* to filter on inbound traffic, invert the match */ + gen_not(b0); + } +#else /* defined(PF_PACKET) && defined(SO_ATTACH_FILTER) */ + bpf_error("inbound/outbound not supported on linktype %d", + linktype); + b0 = NULL; + /* NOTREACHED */ +#endif /* defined(PF_PACKET) && defined(SO_ATTACH_FILTER) */ + } + return (b0); +} + +#ifdef HAVE_NET_PFVAR_H +/* PF firewall log matched interface */ +struct block * +gen_pf_ifname(const char *ifname) +{ + struct block *b0; + u_int len, off; + + if (linktype != DLT_PFLOG) { + bpf_error("ifname supported only on PF linktype"); + /* NOTREACHED */ + } + len = sizeof(((struct pfloghdr *)0)->ifname); + off = offsetof(struct pfloghdr, ifname); + if (strlen(ifname) >= len) { + bpf_error("ifname interface names can only be %d characters", + len-1); + /* NOTREACHED */ + } + b0 = gen_bcmp(OR_LINK, off, strlen(ifname), (const u_char *)ifname); + return (b0); +} + +/* PF firewall log ruleset name */ +struct block * +gen_pf_ruleset(char *ruleset) +{ + struct block *b0; + + if (linktype != DLT_PFLOG) { + bpf_error("ruleset supported only on PF linktype"); + /* NOTREACHED */ + } + + if (strlen(ruleset) >= sizeof(((struct pfloghdr *)0)->ruleset)) { + bpf_error("ruleset names can only be %ld characters", + (long)(sizeof(((struct pfloghdr *)0)->ruleset) - 1)); + /* NOTREACHED */ + } + + b0 = gen_bcmp(OR_LINK, offsetof(struct pfloghdr, ruleset), + strlen(ruleset), (const u_char *)ruleset); + return (b0); +} + +/* PF firewall log rule number */ +struct block * +gen_pf_rnr(int rnr) +{ + struct block *b0; + + if (linktype != DLT_PFLOG) { + bpf_error("rnr supported only on PF linktype"); + /* NOTREACHED */ + } + + b0 = gen_cmp(OR_LINK, offsetof(struct pfloghdr, rulenr), BPF_W, + (bpf_int32)rnr); + return (b0); +} + +/* PF firewall log sub-rule number */ +struct block * +gen_pf_srnr(int srnr) +{ + struct block *b0; + + if (linktype != DLT_PFLOG) { + bpf_error("srnr supported only on PF linktype"); + /* NOTREACHED */ + } + + b0 = gen_cmp(OR_LINK, offsetof(struct pfloghdr, subrulenr), BPF_W, + (bpf_int32)srnr); + return (b0); +} + +/* PF firewall log reason code */ +struct block * +gen_pf_reason(int reason) +{ + struct block *b0; + + if (linktype != DLT_PFLOG) { + bpf_error("reason supported only on PF linktype"); + /* NOTREACHED */ + } + + b0 = gen_cmp(OR_LINK, offsetof(struct pfloghdr, reason), BPF_B, + (bpf_int32)reason); + return (b0); +} + +/* PF firewall log action */ +struct block * +gen_pf_action(int action) +{ + struct block *b0; + + if (linktype != DLT_PFLOG) { + bpf_error("action supported only on PF linktype"); + /* NOTREACHED */ + } + + b0 = gen_cmp(OR_LINK, offsetof(struct pfloghdr, action), BPF_B, + (bpf_int32)action); + return (b0); +} +#else /* !HAVE_NET_PFVAR_H */ +struct block * +gen_pf_ifname(const char *ifname) +{ + bpf_error("libpcap was compiled without pf support"); + /* NOTREACHED */ + return (NULL); +} + +struct block * +gen_pf_ruleset(char *ruleset) +{ + bpf_error("libpcap was compiled on a machine without pf support"); + /* NOTREACHED */ + return (NULL); +} + +struct block * +gen_pf_rnr(int rnr) +{ + bpf_error("libpcap was compiled on a machine without pf support"); + /* NOTREACHED */ + return (NULL); +} + +struct block * +gen_pf_srnr(int srnr) +{ + bpf_error("libpcap was compiled on a machine without pf support"); + /* NOTREACHED */ + return (NULL); +} + +struct block * +gen_pf_reason(int reason) +{ + bpf_error("libpcap was compiled on a machine without pf support"); + /* NOTREACHED */ + return (NULL); +} + +struct block * +gen_pf_action(int action) +{ + bpf_error("libpcap was compiled on a machine without pf support"); + /* NOTREACHED */ + return (NULL); +} +#endif /* HAVE_NET_PFVAR_H */ + +/* IEEE 802.11 wireless header */ +struct block * +gen_p80211_type(int type, int mask) +{ + struct block *b0; + + switch (linktype) { + + case DLT_IEEE802_11: + case DLT_PRISM_HEADER: + case DLT_IEEE802_11_RADIO_AVS: + case DLT_IEEE802_11_RADIO: + b0 = gen_mcmp(OR_LINK, 0, BPF_B, (bpf_int32)type, + (bpf_int32)mask); + break; + + default: + bpf_error("802.11 link-layer types supported only on 802.11"); + /* NOTREACHED */ + } + + return (b0); +} + +struct block * +gen_p80211_fcdir(int fcdir) +{ + struct block *b0; + + switch (linktype) { + + case DLT_IEEE802_11: + case DLT_PRISM_HEADER: + case DLT_IEEE802_11_RADIO_AVS: + case DLT_IEEE802_11_RADIO: + break; + + default: + bpf_error("frame direction supported only with 802.11 headers"); + /* NOTREACHED */ + } + + b0 = gen_mcmp(OR_LINK, 1, BPF_B, (bpf_int32)fcdir, + (bpf_u_int32)IEEE80211_FC1_DIR_MASK); + + return (b0); +} + +struct block * +gen_acode(eaddr, q) + register const u_char *eaddr; + struct qual q; +{ + switch (linktype) { + + case DLT_ARCNET: + case DLT_ARCNET_LINUX: + if ((q.addr == Q_HOST || q.addr == Q_DEFAULT) && + q.proto == Q_LINK) + return (gen_ahostop(eaddr, (int)q.dir)); + else { + bpf_error("ARCnet address used in non-arc expression"); + /* NOTREACHED */ + } + break; + + default: + bpf_error("aid supported only on ARCnet"); + /* NOTREACHED */ + } + bpf_error("ARCnet address used in non-arc expression"); + /* NOTREACHED */ + return NULL; +} + +static struct block * +gen_ahostop(eaddr, dir) + register const u_char *eaddr; + register int dir; +{ + register struct block *b0, *b1; + + switch (dir) { + /* src comes first, different from Ethernet */ + case Q_SRC: + return gen_bcmp(OR_LINK, 0, 1, eaddr); + + case Q_DST: + return gen_bcmp(OR_LINK, 1, 1, eaddr); + + case Q_AND: + b0 = gen_ahostop(eaddr, Q_SRC); + b1 = gen_ahostop(eaddr, Q_DST); + gen_and(b0, b1); + return b1; + + case Q_DEFAULT: + case Q_OR: + b0 = gen_ahostop(eaddr, Q_SRC); + b1 = gen_ahostop(eaddr, Q_DST); + gen_or(b0, b1); + return b1; + + case Q_ADDR1: + bpf_error("'addr1' is only supported on 802.11"); + break; + + case Q_ADDR2: + bpf_error("'addr2' is only supported on 802.11"); + break; + + case Q_ADDR3: + bpf_error("'addr3' is only supported on 802.11"); + break; + + case Q_ADDR4: + bpf_error("'addr4' is only supported on 802.11"); + break; + + case Q_RA: + bpf_error("'ra' is only supported on 802.11"); + break; + + case Q_TA: + bpf_error("'ta' is only supported on 802.11"); + break; + } + abort(); + /* NOTREACHED */ +} + +/* + * support IEEE 802.1Q VLAN trunk over ethernet + */ +struct block * +gen_vlan(vlan_num) + int vlan_num; +{ + struct block *b0, *b1; + + /* can't check for VLAN-encapsulated packets inside MPLS */ + if (label_stack_depth > 0) + bpf_error("no VLAN match after MPLS"); + + /* + * Check for a VLAN packet, and then change the offsets to point + * to the type and data fields within the VLAN packet. Just + * increment the offsets, so that we can support a hierarchy, e.g. + * "vlan 300 && vlan 200" to capture VLAN 200 encapsulated within + * VLAN 100. + * + * XXX - this is a bit of a kludge. If we were to split the + * compiler into a parser that parses an expression and + * generates an expression tree, and a code generator that + * takes an expression tree (which could come from our + * parser or from some other parser) and generates BPF code, + * we could perhaps make the offsets parameters of routines + * and, in the handler for an "AND" node, pass to subnodes + * other than the VLAN node the adjusted offsets. + * + * This would mean that "vlan" would, instead of changing the + * behavior of *all* tests after it, change only the behavior + * of tests ANDed with it. That would change the documented + * semantics of "vlan", which might break some expressions. + * However, it would mean that "(vlan and ip) or ip" would check + * both for VLAN-encapsulated IP and IP-over-Ethernet, rather than + * checking only for VLAN-encapsulated IP, so that could still + * be considered worth doing; it wouldn't break expressions + * that are of the form "vlan and ..." or "vlan N and ...", + * which I suspect are the most common expressions involving + * "vlan". "vlan or ..." doesn't necessarily do what the user + * would really want, now, as all the "or ..." tests would + * be done assuming a VLAN, even though the "or" could be viewed + * as meaning "or, if this isn't a VLAN packet...". + */ + orig_nl = off_nl; + + switch (linktype) { + + case DLT_EN10MB: + case DLT_NETANALYZER: + case DLT_NETANALYZER_TRANSPARENT: + /* check for VLAN, including QinQ */ + b0 = gen_cmp(OR_LINK, off_linktype, BPF_H, + (bpf_int32)ETHERTYPE_8021Q); + b1 = gen_cmp(OR_LINK, off_linktype, BPF_H, + (bpf_int32)ETHERTYPE_8021QINQ); + gen_or(b0,b1); + b0 = b1; + + /* If a specific VLAN is requested, check VLAN id */ + if (vlan_num >= 0) { + b1 = gen_mcmp(OR_MACPL, 0, BPF_H, + (bpf_int32)vlan_num, 0x0fff); + gen_and(b0, b1); + b0 = b1; + } + + off_macpl += 4; + off_linktype += 4; +#if 0 + off_nl_nosnap += 4; + off_nl += 4; +#endif + break; + + default: + bpf_error("no VLAN support for data link type %d", + linktype); + /*NOTREACHED*/ + } + + return (b0); +} + +/* + * support for MPLS + */ +struct block * +gen_mpls(label_num) + int label_num; +{ + struct block *b0,*b1; + + /* + * Change the offsets to point to the type and data fields within + * the MPLS packet. Just increment the offsets, so that we + * can support a hierarchy, e.g. "mpls 100000 && mpls 1024" to + * capture packets with an outer label of 100000 and an inner + * label of 1024. + * + * XXX - this is a bit of a kludge. See comments in gen_vlan(). + */ + orig_nl = off_nl; + + if (label_stack_depth > 0) { + /* just match the bottom-of-stack bit clear */ + b0 = gen_mcmp(OR_MACPL, orig_nl-2, BPF_B, 0, 0x01); + } else { + /* + * Indicate that we're checking MPLS-encapsulated headers, + * to make sure higher level code generators don't try to + * match against IP-related protocols such as Q_ARP, Q_RARP + * etc. + */ + switch (linktype) { + + case DLT_C_HDLC: /* fall through */ + case DLT_EN10MB: + case DLT_NETANALYZER: + case DLT_NETANALYZER_TRANSPARENT: + b0 = gen_linktype(ETHERTYPE_MPLS); + break; + + case DLT_PPP: + b0 = gen_linktype(PPP_MPLS_UCAST); + break; + + /* FIXME add other DLT_s ... + * for Frame-Relay/and ATM this may get messy due to SNAP headers + * leave it for now */ + + default: + bpf_error("no MPLS support for data link type %d", + linktype); + b0 = NULL; + /*NOTREACHED*/ + break; + } + } + + /* If a specific MPLS label is requested, check it */ + if (label_num >= 0) { + label_num = label_num << 12; /* label is shifted 12 bits on the wire */ + b1 = gen_mcmp(OR_MACPL, orig_nl, BPF_W, (bpf_int32)label_num, + 0xfffff000); /* only compare the first 20 bits */ + gen_and(b0, b1); + b0 = b1; + } + + off_nl_nosnap += 4; + off_nl += 4; + label_stack_depth++; + return (b0); +} + +/* + * Support PPPOE discovery and session. + */ +struct block * +gen_pppoed() +{ + /* check for PPPoE discovery */ + return gen_linktype((bpf_int32)ETHERTYPE_PPPOED); +} + +struct block * +gen_pppoes() +{ + struct block *b0; + + /* + * Test against the PPPoE session link-layer type. + */ + b0 = gen_linktype((bpf_int32)ETHERTYPE_PPPOES); + + /* + * Change the offsets to point to the type and data fields within + * the PPP packet, and note that this is PPPoE rather than + * raw PPP. + * + * XXX - this is a bit of a kludge. If we were to split the + * compiler into a parser that parses an expression and + * generates an expression tree, and a code generator that + * takes an expression tree (which could come from our + * parser or from some other parser) and generates BPF code, + * we could perhaps make the offsets parameters of routines + * and, in the handler for an "AND" node, pass to subnodes + * other than the PPPoE node the adjusted offsets. + * + * This would mean that "pppoes" would, instead of changing the + * behavior of *all* tests after it, change only the behavior + * of tests ANDed with it. That would change the documented + * semantics of "pppoes", which might break some expressions. + * However, it would mean that "(pppoes and ip) or ip" would check + * both for VLAN-encapsulated IP and IP-over-Ethernet, rather than + * checking only for VLAN-encapsulated IP, so that could still + * be considered worth doing; it wouldn't break expressions + * that are of the form "pppoes and ..." which I suspect are the + * most common expressions involving "pppoes". "pppoes or ..." + * doesn't necessarily do what the user would really want, now, + * as all the "or ..." tests would be done assuming PPPoE, even + * though the "or" could be viewed as meaning "or, if this isn't + * a PPPoE packet...". + */ + orig_linktype = off_linktype; /* save original values */ + orig_nl = off_nl; + is_pppoes = 1; + + /* + * The "network-layer" protocol is PPPoE, which has a 6-byte + * PPPoE header, followed by a PPP packet. + * + * There is no HDLC encapsulation for the PPP packet (it's + * encapsulated in PPPoES instead), so the link-layer type + * starts at the first byte of the PPP packet. For PPPoE, + * that offset is relative to the beginning of the total + * link-layer payload, including any 802.2 LLC header, so + * it's 6 bytes past off_nl. + */ + off_linktype = off_nl + 6; + + /* + * The network-layer offsets are relative to the beginning + * of the MAC-layer payload; that's past the 6-byte + * PPPoE header and the 2-byte PPP header. + */ + off_nl = 6+2; + off_nl_nosnap = 6+2; + + return b0; +} + +struct block * +gen_atmfield_code(atmfield, jvalue, jtype, reverse) + int atmfield; + bpf_int32 jvalue; + bpf_u_int32 jtype; + int reverse; +{ + struct block *b0; + + switch (atmfield) { + + case A_VPI: + if (!is_atm) + bpf_error("'vpi' supported only on raw ATM"); + if (off_vpi == (u_int)-1) + abort(); + b0 = gen_ncmp(OR_LINK, off_vpi, BPF_B, 0xffffffff, jtype, + reverse, jvalue); + break; + + case A_VCI: + if (!is_atm) + bpf_error("'vci' supported only on raw ATM"); + if (off_vci == (u_int)-1) + abort(); + b0 = gen_ncmp(OR_LINK, off_vci, BPF_H, 0xffffffff, jtype, + reverse, jvalue); + break; + + case A_PROTOTYPE: + if (off_proto == (u_int)-1) + abort(); /* XXX - this isn't on FreeBSD */ + b0 = gen_ncmp(OR_LINK, off_proto, BPF_B, 0x0f, jtype, + reverse, jvalue); + break; + + case A_MSGTYPE: + if (off_payload == (u_int)-1) + abort(); + b0 = gen_ncmp(OR_LINK, off_payload + MSG_TYPE_POS, BPF_B, + 0xffffffff, jtype, reverse, jvalue); + break; + + case A_CALLREFTYPE: + if (!is_atm) + bpf_error("'callref' supported only on raw ATM"); + if (off_proto == (u_int)-1) + abort(); + b0 = gen_ncmp(OR_LINK, off_proto, BPF_B, 0xffffffff, + jtype, reverse, jvalue); + break; + + default: + abort(); + } + return b0; +} + +struct block * +gen_atmtype_abbrev(type) + int type; +{ + struct block *b0, *b1; + + switch (type) { + + case A_METAC: + /* Get all packets in Meta signalling Circuit */ + if (!is_atm) + bpf_error("'metac' supported only on raw ATM"); + b0 = gen_atmfield_code(A_VPI, 0, BPF_JEQ, 0); + b1 = gen_atmfield_code(A_VCI, 1, BPF_JEQ, 0); + gen_and(b0, b1); + break; + + case A_BCC: + /* Get all packets in Broadcast Circuit*/ + if (!is_atm) + bpf_error("'bcc' supported only on raw ATM"); + b0 = gen_atmfield_code(A_VPI, 0, BPF_JEQ, 0); + b1 = gen_atmfield_code(A_VCI, 2, BPF_JEQ, 0); + gen_and(b0, b1); + break; + + case A_OAMF4SC: + /* Get all cells in Segment OAM F4 circuit*/ + if (!is_atm) + bpf_error("'oam4sc' supported only on raw ATM"); + b0 = gen_atmfield_code(A_VPI, 0, BPF_JEQ, 0); + b1 = gen_atmfield_code(A_VCI, 3, BPF_JEQ, 0); + gen_and(b0, b1); + break; + + case A_OAMF4EC: + /* Get all cells in End-to-End OAM F4 Circuit*/ + if (!is_atm) + bpf_error("'oam4ec' supported only on raw ATM"); + b0 = gen_atmfield_code(A_VPI, 0, BPF_JEQ, 0); + b1 = gen_atmfield_code(A_VCI, 4, BPF_JEQ, 0); + gen_and(b0, b1); + break; + + case A_SC: + /* Get all packets in connection Signalling Circuit */ + if (!is_atm) + bpf_error("'sc' supported only on raw ATM"); + b0 = gen_atmfield_code(A_VPI, 0, BPF_JEQ, 0); + b1 = gen_atmfield_code(A_VCI, 5, BPF_JEQ, 0); + gen_and(b0, b1); + break; + + case A_ILMIC: + /* Get all packets in ILMI Circuit */ + if (!is_atm) + bpf_error("'ilmic' supported only on raw ATM"); + b0 = gen_atmfield_code(A_VPI, 0, BPF_JEQ, 0); + b1 = gen_atmfield_code(A_VCI, 16, BPF_JEQ, 0); + gen_and(b0, b1); + break; + + case A_LANE: + /* Get all LANE packets */ + if (!is_atm) + bpf_error("'lane' supported only on raw ATM"); + b1 = gen_atmfield_code(A_PROTOTYPE, PT_LANE, BPF_JEQ, 0); + + /* + * Arrange that all subsequent tests assume LANE + * rather than LLC-encapsulated packets, and set + * the offsets appropriately for LANE-encapsulated + * Ethernet. + * + * "off_mac" is the offset of the Ethernet header, + * which is 2 bytes past the ATM pseudo-header + * (skipping the pseudo-header and 2-byte LE Client + * field). The other offsets are Ethernet offsets + * relative to "off_mac". + */ + is_lane = 1; + off_mac = off_payload + 2; /* MAC header */ + off_linktype = off_mac + 12; + off_macpl = off_mac + 14; /* Ethernet */ + off_nl = 0; /* Ethernet II */ + off_nl_nosnap = 3; /* 802.3+802.2 */ + break; + + case A_LLC: + /* Get all LLC-encapsulated packets */ + if (!is_atm) + bpf_error("'llc' supported only on raw ATM"); + b1 = gen_atmfield_code(A_PROTOTYPE, PT_LLC, BPF_JEQ, 0); + is_lane = 0; + break; + + default: + abort(); + } + return b1; +} + +/* + * Filtering for MTP2 messages based on li value + * FISU, length is null + * LSSU, length is 1 or 2 + * MSU, length is 3 or more + */ +struct block * +gen_mtp2type_abbrev(type) + int type; +{ + struct block *b0, *b1; + + switch (type) { + + case M_FISU: + if ( (linktype != DLT_MTP2) && + (linktype != DLT_ERF) && + (linktype != DLT_MTP2_WITH_PHDR) ) + bpf_error("'fisu' supported only on MTP2"); + /* gen_ncmp(offrel, offset, size, mask, jtype, reverse, value) */ + b0 = gen_ncmp(OR_PACKET, off_li, BPF_B, 0x3f, BPF_JEQ, 0, 0); + break; + + case M_LSSU: + if ( (linktype != DLT_MTP2) && + (linktype != DLT_ERF) && + (linktype != DLT_MTP2_WITH_PHDR) ) + bpf_error("'lssu' supported only on MTP2"); + b0 = gen_ncmp(OR_PACKET, off_li, BPF_B, 0x3f, BPF_JGT, 1, 2); + b1 = gen_ncmp(OR_PACKET, off_li, BPF_B, 0x3f, BPF_JGT, 0, 0); + gen_and(b1, b0); + break; + + case M_MSU: + if ( (linktype != DLT_MTP2) && + (linktype != DLT_ERF) && + (linktype != DLT_MTP2_WITH_PHDR) ) + bpf_error("'msu' supported only on MTP2"); + b0 = gen_ncmp(OR_PACKET, off_li, BPF_B, 0x3f, BPF_JGT, 0, 2); + break; + + default: + abort(); + } + return b0; +} + +struct block * +gen_mtp3field_code(mtp3field, jvalue, jtype, reverse) + int mtp3field; + bpf_u_int32 jvalue; + bpf_u_int32 jtype; + int reverse; +{ + struct block *b0; + bpf_u_int32 val1 , val2 , val3; + + switch (mtp3field) { + + case M_SIO: + if (off_sio == (u_int)-1) + bpf_error("'sio' supported only on SS7"); + /* sio coded on 1 byte so max value 255 */ + if(jvalue > 255) + bpf_error("sio value %u too big; max value = 255", + jvalue); + b0 = gen_ncmp(OR_PACKET, off_sio, BPF_B, 0xffffffff, + (u_int)jtype, reverse, (u_int)jvalue); + break; + + case M_OPC: + if (off_opc == (u_int)-1) + bpf_error("'opc' supported only on SS7"); + /* opc coded on 14 bits so max value 16383 */ + if (jvalue > 16383) + bpf_error("opc value %u too big; max value = 16383", + jvalue); + /* the following instructions are made to convert jvalue + * to the form used to write opc in an ss7 message*/ + val1 = jvalue & 0x00003c00; + val1 = val1 >>10; + val2 = jvalue & 0x000003fc; + val2 = val2 <<6; + val3 = jvalue & 0x00000003; + val3 = val3 <<22; + jvalue = val1 + val2 + val3; + b0 = gen_ncmp(OR_PACKET, off_opc, BPF_W, 0x00c0ff0f, + (u_int)jtype, reverse, (u_int)jvalue); + break; + + case M_DPC: + if (off_dpc == (u_int)-1) + bpf_error("'dpc' supported only on SS7"); + /* dpc coded on 14 bits so max value 16383 */ + if (jvalue > 16383) + bpf_error("dpc value %u too big; max value = 16383", + jvalue); + /* the following instructions are made to convert jvalue + * to the forme used to write dpc in an ss7 message*/ + val1 = jvalue & 0x000000ff; + val1 = val1 << 24; + val2 = jvalue & 0x00003f00; + val2 = val2 << 8; + jvalue = val1 + val2; + b0 = gen_ncmp(OR_PACKET, off_dpc, BPF_W, 0xff3f0000, + (u_int)jtype, reverse, (u_int)jvalue); + break; + + case M_SLS: + if (off_sls == (u_int)-1) + bpf_error("'sls' supported only on SS7"); + /* sls coded on 4 bits so max value 15 */ + if (jvalue > 15) + bpf_error("sls value %u too big; max value = 15", + jvalue); + /* the following instruction is made to convert jvalue + * to the forme used to write sls in an ss7 message*/ + jvalue = jvalue << 4; + b0 = gen_ncmp(OR_PACKET, off_sls, BPF_B, 0xf0, + (u_int)jtype,reverse, (u_int)jvalue); + break; + + default: + abort(); + } + return b0; +} + +static struct block * +gen_msg_abbrev(type) + int type; +{ + struct block *b1; + + /* + * Q.2931 signalling protocol messages for handling virtual circuits + * establishment and teardown + */ + switch (type) { + + case A_SETUP: + b1 = gen_atmfield_code(A_MSGTYPE, SETUP, BPF_JEQ, 0); + break; + + case A_CALLPROCEED: + b1 = gen_atmfield_code(A_MSGTYPE, CALL_PROCEED, BPF_JEQ, 0); + break; + + case A_CONNECT: + b1 = gen_atmfield_code(A_MSGTYPE, CONNECT, BPF_JEQ, 0); + break; + + case A_CONNECTACK: + b1 = gen_atmfield_code(A_MSGTYPE, CONNECT_ACK, BPF_JEQ, 0); + break; + + case A_RELEASE: + b1 = gen_atmfield_code(A_MSGTYPE, RELEASE, BPF_JEQ, 0); + break; + + case A_RELEASE_DONE: + b1 = gen_atmfield_code(A_MSGTYPE, RELEASE_DONE, BPF_JEQ, 0); + break; + + default: + abort(); + } + return b1; +} + +struct block * +gen_atmmulti_abbrev(type) + int type; +{ + struct block *b0, *b1; + + switch (type) { + + case A_OAM: + if (!is_atm) + bpf_error("'oam' supported only on raw ATM"); + b1 = gen_atmmulti_abbrev(A_OAMF4); + break; + + case A_OAMF4: + if (!is_atm) + bpf_error("'oamf4' supported only on raw ATM"); + /* OAM F4 type */ + b0 = gen_atmfield_code(A_VCI, 3, BPF_JEQ, 0); + b1 = gen_atmfield_code(A_VCI, 4, BPF_JEQ, 0); + gen_or(b0, b1); + b0 = gen_atmfield_code(A_VPI, 0, BPF_JEQ, 0); + gen_and(b0, b1); + break; + + case A_CONNECTMSG: + /* + * Get Q.2931 signalling messages for switched + * virtual connection + */ + if (!is_atm) + bpf_error("'connectmsg' supported only on raw ATM"); + b0 = gen_msg_abbrev(A_SETUP); + b1 = gen_msg_abbrev(A_CALLPROCEED); + gen_or(b0, b1); + b0 = gen_msg_abbrev(A_CONNECT); + gen_or(b0, b1); + b0 = gen_msg_abbrev(A_CONNECTACK); + gen_or(b0, b1); + b0 = gen_msg_abbrev(A_RELEASE); + gen_or(b0, b1); + b0 = gen_msg_abbrev(A_RELEASE_DONE); + gen_or(b0, b1); + b0 = gen_atmtype_abbrev(A_SC); + gen_and(b0, b1); + break; + + case A_METACONNECT: + if (!is_atm) + bpf_error("'metaconnect' supported only on raw ATM"); + b0 = gen_msg_abbrev(A_SETUP); + b1 = gen_msg_abbrev(A_CALLPROCEED); + gen_or(b0, b1); + b0 = gen_msg_abbrev(A_CONNECT); + gen_or(b0, b1); + b0 = gen_msg_abbrev(A_RELEASE); + gen_or(b0, b1); + b0 = gen_msg_abbrev(A_RELEASE_DONE); + gen_or(b0, b1); + b0 = gen_atmtype_abbrev(A_METAC); + gen_and(b0, b1); + break; + + default: + abort(); + } + return b1; +} diff --git a/gencode.h b/gencode.h new file mode 100644 index 0000000..29d2d10 --- /dev/null +++ b/gencode.h @@ -0,0 +1,343 @@ +/* + * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * @(#) $Header: /tcpdump/master/libpcap/gencode.h,v 1.71 2007-11-18 02:03:52 guy Exp $ (LBL) + */ + +/* + * ATM support: + * + * Copyright (c) 1997 Yen Yen Lim and North Dakota State University + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Yen Yen Lim and + * North Dakota State University + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef HAVE___ATTRIBUTE__ +#define __attribute__(x) +#endif /* HAVE___ATTRIBUTE__ */ + +/* Address qualifiers. */ + +#define Q_HOST 1 +#define Q_NET 2 +#define Q_PORT 3 +#define Q_GATEWAY 4 +#define Q_PROTO 5 +#define Q_PROTOCHAIN 6 +#define Q_PORTRANGE 7 + +/* Protocol qualifiers. */ + +#define Q_LINK 1 +#define Q_IP 2 +#define Q_ARP 3 +#define Q_RARP 4 +#define Q_SCTP 5 +#define Q_TCP 6 +#define Q_UDP 7 +#define Q_ICMP 8 +#define Q_IGMP 9 +#define Q_IGRP 10 + + +#define Q_ATALK 11 +#define Q_DECNET 12 +#define Q_LAT 13 +#define Q_SCA 14 +#define Q_MOPRC 15 +#define Q_MOPDL 16 + + +#define Q_IPV6 17 +#define Q_ICMPV6 18 +#define Q_AH 19 +#define Q_ESP 20 + +#define Q_PIM 21 +#define Q_VRRP 22 + +#define Q_AARP 23 + +#define Q_ISO 24 +#define Q_ESIS 25 +#define Q_ISIS 26 +#define Q_CLNP 27 + +#define Q_STP 28 + +#define Q_IPX 29 + +#define Q_NETBEUI 30 + +/* IS-IS Levels */ +#define Q_ISIS_L1 31 +#define Q_ISIS_L2 32 +/* PDU types */ +#define Q_ISIS_IIH 33 +#define Q_ISIS_LAN_IIH 34 +#define Q_ISIS_PTP_IIH 35 +#define Q_ISIS_SNP 36 +#define Q_ISIS_CSNP 37 +#define Q_ISIS_PSNP 38 +#define Q_ISIS_LSP 39 + +#define Q_RADIO 40 + +#define Q_CARP 41 + +/* Directional qualifiers. */ + +#define Q_SRC 1 +#define Q_DST 2 +#define Q_OR 3 +#define Q_AND 4 +#define Q_ADDR1 5 +#define Q_ADDR2 6 +#define Q_ADDR3 7 +#define Q_ADDR4 8 +#define Q_RA 9 +#define Q_TA 10 + +#define Q_DEFAULT 0 +#define Q_UNDEF 255 + +/* ATM types */ +#define A_METAC 22 /* Meta signalling Circuit */ +#define A_BCC 23 /* Broadcast Circuit */ +#define A_OAMF4SC 24 /* Segment OAM F4 Circuit */ +#define A_OAMF4EC 25 /* End-to-End OAM F4 Circuit */ +#define A_SC 26 /* Signalling Circuit*/ +#define A_ILMIC 27 /* ILMI Circuit */ +#define A_OAM 28 /* OAM cells : F4 only */ +#define A_OAMF4 29 /* OAM F4 cells: Segment + End-to-end */ +#define A_LANE 30 /* LANE traffic */ +#define A_LLC 31 /* LLC-encapsulated traffic */ + +/* Based on Q.2931 signalling protocol */ +#define A_SETUP 41 /* Setup message */ +#define A_CALLPROCEED 42 /* Call proceeding message */ +#define A_CONNECT 43 /* Connect message */ +#define A_CONNECTACK 44 /* Connect Ack message */ +#define A_RELEASE 45 /* Release message */ +#define A_RELEASE_DONE 46 /* Release message */ + +/* ATM field types */ +#define A_VPI 51 +#define A_VCI 52 +#define A_PROTOTYPE 53 +#define A_MSGTYPE 54 +#define A_CALLREFTYPE 55 + +#define A_CONNECTMSG 70 /* returns Q.2931 signalling messages for + establishing and destroying switched + virtual connection */ +#define A_METACONNECT 71 /* returns Q.2931 signalling messages for + establishing and destroying predefined + virtual circuits, such as broadcast + circuit, oamf4 segment circuit, oamf4 + end-to-end circuits, ILMI circuits or + connection signalling circuit. */ + +/* MTP2 types */ +#define M_FISU 22 /* FISU */ +#define M_LSSU 23 /* LSSU */ +#define M_MSU 24 /* MSU */ + +/* MTP3 field types */ +#define M_SIO 1 +#define M_OPC 2 +#define M_DPC 3 +#define M_SLS 4 + + +struct slist; + +struct stmt { + int code; + struct slist *jt; /*only for relative jump in block*/ + struct slist *jf; /*only for relative jump in block*/ + bpf_int32 k; +}; + +struct slist { + struct stmt s; + struct slist *next; +}; + +/* + * A bit vector to represent definition sets. We assume TOT_REGISTERS + * is smaller than 8*sizeof(atomset). + */ +typedef bpf_u_int32 atomset; +#define ATOMMASK(n) (1 << (n)) +#define ATOMELEM(d, n) (d & ATOMMASK(n)) + +/* + * An unbounded set. + */ +typedef bpf_u_int32 *uset; + +/* + * Total number of atomic entities, including accumulator (A) and index (X). + * We treat all these guys similarly during flow analysis. + */ +#define N_ATOMS (BPF_MEMWORDS+2) + +struct edge { + int id; + int code; + uset edom; + struct block *succ; + struct block *pred; + struct edge *next; /* link list of incoming edges for a node */ +}; + +struct block { + int id; + struct slist *stmts; /* side effect stmts */ + struct stmt s; /* branch stmt */ + int mark; + u_int longjt; /* jt branch requires long jump */ + u_int longjf; /* jf branch requires long jump */ + int level; + int offset; + int sense; + struct edge et; + struct edge ef; + struct block *head; + struct block *link; /* link field used by optimizer */ + uset dom; + uset closure; + struct edge *in_edges; + atomset def, kill; + atomset in_use; + atomset out_use; + int oval; + int val[N_ATOMS]; +}; + +struct arth { + struct block *b; /* protocol checks */ + struct slist *s; /* stmt list */ + int regno; /* virtual register number of result */ +}; + +struct qual { + unsigned char addr; + unsigned char proto; + unsigned char dir; + unsigned char pad; +}; + +struct arth *gen_loadi(int); +struct arth *gen_load(int, struct arth *, int); +struct arth *gen_loadlen(void); +struct arth *gen_neg(struct arth *); +struct arth *gen_arth(int, struct arth *, struct arth *); + +void gen_and(struct block *, struct block *); +void gen_or(struct block *, struct block *); +void gen_not(struct block *); + +struct block *gen_scode(const char *, struct qual); +struct block *gen_ecode(const u_char *, struct qual); +struct block *gen_acode(const u_char *, struct qual); +struct block *gen_mcode(const char *, const char *, int, struct qual); +#ifdef INET6 +struct block *gen_mcode6(const char *, const char *, int, struct qual); +#endif +struct block *gen_ncode(const char *, bpf_u_int32, struct qual); +struct block *gen_proto_abbrev(int); +struct block *gen_relation(int, struct arth *, struct arth *, int); +struct block *gen_less(int); +struct block *gen_greater(int); +struct block *gen_byteop(int, int, int); +struct block *gen_broadcast(int); +struct block *gen_multicast(int); +struct block *gen_inbound(int); + +struct block *gen_vlan(int); +struct block *gen_mpls(int); + +struct block *gen_pppoed(void); +struct block *gen_pppoes(void); + +struct block *gen_atmfield_code(int atmfield, bpf_int32 jvalue, bpf_u_int32 jtype, int reverse); +struct block *gen_atmtype_abbrev(int type); +struct block *gen_atmmulti_abbrev(int type); + +struct block *gen_mtp2type_abbrev(int type); +struct block *gen_mtp3field_code(int mtp3field, bpf_u_int32 jvalue, bpf_u_int32 jtype, int reverse); + +struct block *gen_pf_ifname(const char *); +struct block *gen_pf_rnr(int); +struct block *gen_pf_srnr(int); +struct block *gen_pf_ruleset(char *); +struct block *gen_pf_reason(int); +struct block *gen_pf_action(int); +struct block *gen_pf_dir(int); + +struct block *gen_p80211_type(int, int); +struct block *gen_p80211_fcdir(int); + +void bpf_optimize(struct block **); +void bpf_error(const char *, ...) + __attribute__((noreturn, format (printf, 1, 2))); + +void finish_parse(struct block *); +char *sdup(const char *); + +struct bpf_insn *icode_to_fcode(struct block *, u_int *); +int pcap_parse(void); +void lex_init(const char *); +void lex_cleanup(void); +void sappend(struct slist *, struct slist *); + +/* XXX */ +#define JT(b) ((b)->et.succ) +#define JF(b) ((b)->ef.succ) + +extern int no_optimize; diff --git a/grammar.y b/grammar.y new file mode 100644 index 0000000..f2ba28b --- /dev/null +++ b/grammar.y @@ -0,0 +1,697 @@ +%{ +/* + * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + */ +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/grammar.y,v 1.101 2007-11-18 02:03:52 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef WIN32 +#include +#else /* WIN32 */ +#include +#include +#endif /* WIN32 */ + +#include + +#ifndef WIN32 +#if __STDC__ +struct mbuf; +struct rtentry; +#endif + +#include +#include +#endif /* WIN32 */ + +#include + +#include "pcap-int.h" + +#include "gencode.h" +#ifdef HAVE_NET_PFVAR_H +#include +#include +#include +#endif +#include "ieee80211.h" +#include + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +#define QSET(q, p, d, a) (q).proto = (p),\ + (q).dir = (d),\ + (q).addr = (a) + +struct tok { + int v; /* value */ + const char *s; /* string */ +}; + +static const struct tok ieee80211_types[] = { + { IEEE80211_FC0_TYPE_DATA, "data" }, + { IEEE80211_FC0_TYPE_MGT, "mgt" }, + { IEEE80211_FC0_TYPE_MGT, "management" }, + { IEEE80211_FC0_TYPE_CTL, "ctl" }, + { IEEE80211_FC0_TYPE_CTL, "control" }, + { 0, NULL } +}; +static const struct tok ieee80211_mgt_subtypes[] = { + { IEEE80211_FC0_SUBTYPE_ASSOC_REQ, "assocreq" }, + { IEEE80211_FC0_SUBTYPE_ASSOC_REQ, "assoc-req" }, + { IEEE80211_FC0_SUBTYPE_ASSOC_RESP, "assocresp" }, + { IEEE80211_FC0_SUBTYPE_ASSOC_RESP, "assoc-resp" }, + { IEEE80211_FC0_SUBTYPE_REASSOC_REQ, "reassocreq" }, + { IEEE80211_FC0_SUBTYPE_REASSOC_REQ, "reassoc-req" }, + { IEEE80211_FC0_SUBTYPE_REASSOC_RESP, "reassocresp" }, + { IEEE80211_FC0_SUBTYPE_REASSOC_RESP, "reassoc-resp" }, + { IEEE80211_FC0_SUBTYPE_PROBE_REQ, "probereq" }, + { IEEE80211_FC0_SUBTYPE_PROBE_REQ, "probe-req" }, + { IEEE80211_FC0_SUBTYPE_PROBE_RESP, "proberesp" }, + { IEEE80211_FC0_SUBTYPE_PROBE_RESP, "probe-resp" }, + { IEEE80211_FC0_SUBTYPE_BEACON, "beacon" }, + { IEEE80211_FC0_SUBTYPE_ATIM, "atim" }, + { IEEE80211_FC0_SUBTYPE_DISASSOC, "disassoc" }, + { IEEE80211_FC0_SUBTYPE_DISASSOC, "disassociation" }, + { IEEE80211_FC0_SUBTYPE_AUTH, "auth" }, + { IEEE80211_FC0_SUBTYPE_AUTH, "authentication" }, + { IEEE80211_FC0_SUBTYPE_DEAUTH, "deauth" }, + { IEEE80211_FC0_SUBTYPE_DEAUTH, "deauthentication" }, + { 0, NULL } +}; +static const struct tok ieee80211_ctl_subtypes[] = { + { IEEE80211_FC0_SUBTYPE_PS_POLL, "ps-poll" }, + { IEEE80211_FC0_SUBTYPE_RTS, "rts" }, + { IEEE80211_FC0_SUBTYPE_CTS, "cts" }, + { IEEE80211_FC0_SUBTYPE_ACK, "ack" }, + { IEEE80211_FC0_SUBTYPE_CF_END, "cf-end" }, + { IEEE80211_FC0_SUBTYPE_CF_END_ACK, "cf-end-ack" }, + { 0, NULL } +}; +static const struct tok ieee80211_data_subtypes[] = { + { IEEE80211_FC0_SUBTYPE_DATA, "data" }, + { IEEE80211_FC0_SUBTYPE_CF_ACK, "data-cf-ack" }, + { IEEE80211_FC0_SUBTYPE_CF_POLL, "data-cf-poll" }, + { IEEE80211_FC0_SUBTYPE_CF_ACPL, "data-cf-ack-poll" }, + { IEEE80211_FC0_SUBTYPE_NODATA, "null" }, + { IEEE80211_FC0_SUBTYPE_NODATA_CF_ACK, "cf-ack" }, + { IEEE80211_FC0_SUBTYPE_NODATA_CF_POLL, "cf-poll" }, + { IEEE80211_FC0_SUBTYPE_NODATA_CF_ACPL, "cf-ack-poll" }, + { IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_DATA, "qos-data" }, + { IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_CF_ACK, "qos-data-cf-ack" }, + { IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_CF_POLL, "qos-data-cf-poll" }, + { IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_CF_ACPL, "qos-data-cf-ack-poll" }, + { IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_NODATA, "qos" }, + { IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_NODATA_CF_POLL, "qos-cf-poll" }, + { IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_NODATA_CF_ACPL, "qos-cf-ack-poll" }, + { 0, NULL } +}; +struct type2tok { + int type; + const struct tok *tok; +}; +static const struct type2tok ieee80211_type_subtypes[] = { + { IEEE80211_FC0_TYPE_MGT, ieee80211_mgt_subtypes }, + { IEEE80211_FC0_TYPE_CTL, ieee80211_ctl_subtypes }, + { IEEE80211_FC0_TYPE_DATA, ieee80211_data_subtypes }, + { 0, NULL } +}; + +static int +str2tok(const char *str, const struct tok *toks) +{ + int i; + + for (i = 0; toks[i].s != NULL; i++) { + if (pcap_strcasecmp(toks[i].s, str) == 0) + return (toks[i].v); + } + return (-1); +} + +int n_errors = 0; + +static struct qual qerr = { Q_UNDEF, Q_UNDEF, Q_UNDEF, Q_UNDEF }; + +static void +yyerror(const char *msg) +{ + ++n_errors; + bpf_error("%s", msg); + /* NOTREACHED */ +} + +#ifndef YYBISON +int yyparse(void); + +int +pcap_parse() +{ + return (yyparse()); +} +#endif + +#ifdef HAVE_NET_PFVAR_H +static int +pfreason_to_num(const char *reason) +{ + const char *reasons[] = PFRES_NAMES; + int i; + + for (i = 0; reasons[i]; i++) { + if (pcap_strcasecmp(reason, reasons[i]) == 0) + return (i); + } + bpf_error("unknown PF reason"); + /*NOTREACHED*/ +} + +static int +pfaction_to_num(const char *action) +{ + if (pcap_strcasecmp(action, "pass") == 0 || + pcap_strcasecmp(action, "accept") == 0) + return (PF_PASS); + else if (pcap_strcasecmp(action, "drop") == 0 || + pcap_strcasecmp(action, "block") == 0) + return (PF_DROP); +#if HAVE_PF_NAT_THROUGH_PF_NORDR + else if (pcap_strcasecmp(action, "rdr") == 0) + return (PF_RDR); + else if (pcap_strcasecmp(action, "nat") == 0) + return (PF_NAT); + else if (pcap_strcasecmp(action, "binat") == 0) + return (PF_BINAT); + else if (pcap_strcasecmp(action, "nordr") == 0) + return (PF_NORDR); +#endif + else { + bpf_error("unknown PF action"); + /*NOTREACHED*/ + } +} +#else /* !HAVE_NET_PFVAR_H */ +static int +pfreason_to_num(const char *reason) +{ + bpf_error("libpcap was compiled on a machine without pf support"); + /*NOTREACHED*/ + + /* this is to make the VC compiler happy */ + return -1; +} + +static int +pfaction_to_num(const char *action) +{ + bpf_error("libpcap was compiled on a machine without pf support"); + /*NOTREACHED*/ + + /* this is to make the VC compiler happy */ + return -1; +} +#endif /* HAVE_NET_PFVAR_H */ +%} + +%union { + int i; + bpf_u_int32 h; + u_char *e; + char *s; + struct stmt *stmt; + struct arth *a; + struct { + struct qual q; + int atmfieldtype; + int mtp3fieldtype; + struct block *b; + } blk; + struct block *rblk; +} + +%type expr id nid pid term rterm qid +%type head +%type pqual dqual aqual ndaqual +%type arth narth +%type byteop pname pnum relop irelop +%type and or paren not null prog +%type other pfvar p80211 +%type atmtype atmmultitype +%type atmfield +%type atmfieldvalue atmvalue atmlistvalue +%type mtp2type +%type mtp3field +%type mtp3fieldvalue mtp3value mtp3listvalue + + +%token DST SRC HOST GATEWAY +%token NET NETMASK PORT PORTRANGE LESS GREATER PROTO PROTOCHAIN CBYTE +%token ARP RARP IP SCTP TCP UDP ICMP IGMP IGRP PIM VRRP CARP +%token ATALK AARP DECNET LAT SCA MOPRC MOPDL +%token TK_BROADCAST TK_MULTICAST +%token NUM INBOUND OUTBOUND +%token PF_IFNAME PF_RSET PF_RNR PF_SRNR PF_REASON PF_ACTION +%token TYPE SUBTYPE DIR ADDR1 ADDR2 ADDR3 ADDR4 RA TA +%token LINK +%token GEQ LEQ NEQ +%token ID EID HID HID6 AID +%token LSH RSH +%token LEN +%token IPV6 ICMPV6 AH ESP +%token VLAN MPLS +%token PPPOED PPPOES +%token ISO ESIS CLNP ISIS L1 L2 IIH LSP SNP CSNP PSNP +%token STP +%token IPX +%token NETBEUI +%token LANE LLC METAC BCC SC ILMIC OAMF4EC OAMF4SC +%token OAM OAMF4 CONNECTMSG METACONNECT +%token VPI VCI +%token RADIO +%token FISU LSSU MSU +%token SIO OPC DPC SLS + +%type ID +%type EID +%type AID +%type HID HID6 +%type NUM action reason type subtype type_subtype dir + +%left OR AND +%nonassoc '!' +%left '|' +%left '&' +%left LSH RSH +%left '+' '-' +%left '*' '/' +%nonassoc UMINUS +%% +prog: null expr +{ + finish_parse($2.b); +} + | null + ; +null: /* null */ { $$.q = qerr; } + ; +expr: term + | expr and term { gen_and($1.b, $3.b); $$ = $3; } + | expr and id { gen_and($1.b, $3.b); $$ = $3; } + | expr or term { gen_or($1.b, $3.b); $$ = $3; } + | expr or id { gen_or($1.b, $3.b); $$ = $3; } + ; +and: AND { $$ = $0; } + ; +or: OR { $$ = $0; } + ; +id: nid + | pnum { $$.b = gen_ncode(NULL, (bpf_u_int32)$1, + $$.q = $0.q); } + | paren pid ')' { $$ = $2; } + ; +nid: ID { $$.b = gen_scode($1, $$.q = $0.q); } + | HID '/' NUM { $$.b = gen_mcode($1, NULL, $3, + $$.q = $0.q); } + | HID NETMASK HID { $$.b = gen_mcode($1, $3, 0, + $$.q = $0.q); } + | HID { + /* Decide how to parse HID based on proto */ + $$.q = $0.q; + if ($$.q.addr == Q_PORT) + bpf_error("'port' modifier applied to ip host"); + else if ($$.q.addr == Q_PORTRANGE) + bpf_error("'portrange' modifier applied to ip host"); + else if ($$.q.addr == Q_PROTO) + bpf_error("'proto' modifier applied to ip host"); + else if ($$.q.addr == Q_PROTOCHAIN) + bpf_error("'protochain' modifier applied to ip host"); + $$.b = gen_ncode($1, 0, $$.q); + } + | HID6 '/' NUM { +#ifdef INET6 + $$.b = gen_mcode6($1, NULL, $3, + $$.q = $0.q); +#else + bpf_error("'ip6addr/prefixlen' not supported " + "in this configuration"); +#endif /*INET6*/ + } + | HID6 { +#ifdef INET6 + $$.b = gen_mcode6($1, 0, 128, + $$.q = $0.q); +#else + bpf_error("'ip6addr' not supported " + "in this configuration"); +#endif /*INET6*/ + } + | EID { + $$.b = gen_ecode($1, $$.q = $0.q); + /* + * $1 was allocated by "pcap_ether_aton()", + * so we must free it now that we're done + * with it. + */ + free($1); + } + | AID { + $$.b = gen_acode($1, $$.q = $0.q); + /* + * $1 was allocated by "pcap_ether_aton()", + * so we must free it now that we're done + * with it. + */ + free($1); + } + | not id { gen_not($2.b); $$ = $2; } + ; +not: '!' { $$ = $0; } + ; +paren: '(' { $$ = $0; } + ; +pid: nid + | qid and id { gen_and($1.b, $3.b); $$ = $3; } + | qid or id { gen_or($1.b, $3.b); $$ = $3; } + ; +qid: pnum { $$.b = gen_ncode(NULL, (bpf_u_int32)$1, + $$.q = $0.q); } + | pid + ; +term: rterm + | not term { gen_not($2.b); $$ = $2; } + ; +head: pqual dqual aqual { QSET($$.q, $1, $2, $3); } + | pqual dqual { QSET($$.q, $1, $2, Q_DEFAULT); } + | pqual aqual { QSET($$.q, $1, Q_DEFAULT, $2); } + | pqual PROTO { QSET($$.q, $1, Q_DEFAULT, Q_PROTO); } + | pqual PROTOCHAIN { QSET($$.q, $1, Q_DEFAULT, Q_PROTOCHAIN); } + | pqual ndaqual { QSET($$.q, $1, Q_DEFAULT, $2); } + ; +rterm: head id { $$ = $2; } + | paren expr ')' { $$.b = $2.b; $$.q = $1.q; } + | pname { $$.b = gen_proto_abbrev($1); $$.q = qerr; } + | arth relop arth { $$.b = gen_relation($2, $1, $3, 0); + $$.q = qerr; } + | arth irelop arth { $$.b = gen_relation($2, $1, $3, 1); + $$.q = qerr; } + | other { $$.b = $1; $$.q = qerr; } + | atmtype { $$.b = gen_atmtype_abbrev($1); $$.q = qerr; } + | atmmultitype { $$.b = gen_atmmulti_abbrev($1); $$.q = qerr; } + | atmfield atmvalue { $$.b = $2.b; $$.q = qerr; } + | mtp2type { $$.b = gen_mtp2type_abbrev($1); $$.q = qerr; } + | mtp3field mtp3value { $$.b = $2.b; $$.q = qerr; } + ; +/* protocol level qualifiers */ +pqual: pname + | { $$ = Q_DEFAULT; } + ; +/* 'direction' qualifiers */ +dqual: SRC { $$ = Q_SRC; } + | DST { $$ = Q_DST; } + | SRC OR DST { $$ = Q_OR; } + | DST OR SRC { $$ = Q_OR; } + | SRC AND DST { $$ = Q_AND; } + | DST AND SRC { $$ = Q_AND; } + | ADDR1 { $$ = Q_ADDR1; } + | ADDR2 { $$ = Q_ADDR2; } + | ADDR3 { $$ = Q_ADDR3; } + | ADDR4 { $$ = Q_ADDR4; } + | RA { $$ = Q_RA; } + | TA { $$ = Q_TA; } + ; +/* address type qualifiers */ +aqual: HOST { $$ = Q_HOST; } + | NET { $$ = Q_NET; } + | PORT { $$ = Q_PORT; } + | PORTRANGE { $$ = Q_PORTRANGE; } + ; +/* non-directional address type qualifiers */ +ndaqual: GATEWAY { $$ = Q_GATEWAY; } + ; +pname: LINK { $$ = Q_LINK; } + | IP { $$ = Q_IP; } + | ARP { $$ = Q_ARP; } + | RARP { $$ = Q_RARP; } + | SCTP { $$ = Q_SCTP; } + | TCP { $$ = Q_TCP; } + | UDP { $$ = Q_UDP; } + | ICMP { $$ = Q_ICMP; } + | IGMP { $$ = Q_IGMP; } + | IGRP { $$ = Q_IGRP; } + | PIM { $$ = Q_PIM; } + | VRRP { $$ = Q_VRRP; } + | CARP { $$ = Q_CARP; } + | ATALK { $$ = Q_ATALK; } + | AARP { $$ = Q_AARP; } + | DECNET { $$ = Q_DECNET; } + | LAT { $$ = Q_LAT; } + | SCA { $$ = Q_SCA; } + | MOPDL { $$ = Q_MOPDL; } + | MOPRC { $$ = Q_MOPRC; } + | IPV6 { $$ = Q_IPV6; } + | ICMPV6 { $$ = Q_ICMPV6; } + | AH { $$ = Q_AH; } + | ESP { $$ = Q_ESP; } + | ISO { $$ = Q_ISO; } + | ESIS { $$ = Q_ESIS; } + | ISIS { $$ = Q_ISIS; } + | L1 { $$ = Q_ISIS_L1; } + | L2 { $$ = Q_ISIS_L2; } + | IIH { $$ = Q_ISIS_IIH; } + | LSP { $$ = Q_ISIS_LSP; } + | SNP { $$ = Q_ISIS_SNP; } + | PSNP { $$ = Q_ISIS_PSNP; } + | CSNP { $$ = Q_ISIS_CSNP; } + | CLNP { $$ = Q_CLNP; } + | STP { $$ = Q_STP; } + | IPX { $$ = Q_IPX; } + | NETBEUI { $$ = Q_NETBEUI; } + | RADIO { $$ = Q_RADIO; } + ; +other: pqual TK_BROADCAST { $$ = gen_broadcast($1); } + | pqual TK_MULTICAST { $$ = gen_multicast($1); } + | LESS NUM { $$ = gen_less($2); } + | GREATER NUM { $$ = gen_greater($2); } + | CBYTE NUM byteop NUM { $$ = gen_byteop($3, $2, $4); } + | INBOUND { $$ = gen_inbound(0); } + | OUTBOUND { $$ = gen_inbound(1); } + | VLAN pnum { $$ = gen_vlan($2); } + | VLAN { $$ = gen_vlan(-1); } + | MPLS pnum { $$ = gen_mpls($2); } + | MPLS { $$ = gen_mpls(-1); } + | PPPOED { $$ = gen_pppoed(); } + | PPPOES { $$ = gen_pppoes(); } + | pfvar { $$ = $1; } + | pqual p80211 { $$ = $2; } + ; + +pfvar: PF_IFNAME ID { $$ = gen_pf_ifname($2); } + | PF_RSET ID { $$ = gen_pf_ruleset($2); } + | PF_RNR NUM { $$ = gen_pf_rnr($2); } + | PF_SRNR NUM { $$ = gen_pf_srnr($2); } + | PF_REASON reason { $$ = gen_pf_reason($2); } + | PF_ACTION action { $$ = gen_pf_action($2); } + ; + +p80211: TYPE type SUBTYPE subtype + { $$ = gen_p80211_type($2 | $4, + IEEE80211_FC0_TYPE_MASK | + IEEE80211_FC0_SUBTYPE_MASK); + } + | TYPE type { $$ = gen_p80211_type($2, + IEEE80211_FC0_TYPE_MASK); + } + | SUBTYPE type_subtype { $$ = gen_p80211_type($2, + IEEE80211_FC0_TYPE_MASK | + IEEE80211_FC0_SUBTYPE_MASK); + } + | DIR dir { $$ = gen_p80211_fcdir($2); } + ; + +type: NUM + | ID { $$ = str2tok($1, ieee80211_types); + if ($$ == -1) + bpf_error("unknown 802.11 type name"); + } + ; + +subtype: NUM + | ID { const struct tok *types = NULL; + int i; + for (i = 0;; i++) { + if (ieee80211_type_subtypes[i].tok == NULL) { + /* Ran out of types */ + bpf_error("unknown 802.11 type"); + break; + } + if ($-1 == ieee80211_type_subtypes[i].type) { + types = ieee80211_type_subtypes[i].tok; + break; + } + } + + $$ = str2tok($1, types); + if ($$ == -1) + bpf_error("unknown 802.11 subtype name"); + } + ; + +type_subtype: ID { int i; + for (i = 0;; i++) { + if (ieee80211_type_subtypes[i].tok == NULL) { + /* Ran out of types */ + bpf_error("unknown 802.11 type name"); + break; + } + $$ = str2tok($1, ieee80211_type_subtypes[i].tok); + if ($$ != -1) { + $$ |= ieee80211_type_subtypes[i].type; + break; + } + } + } + ; + +dir: NUM + | ID { if (pcap_strcasecmp($1, "nods") == 0) + $$ = IEEE80211_FC1_DIR_NODS; + else if (pcap_strcasecmp($1, "tods") == 0) + $$ = IEEE80211_FC1_DIR_TODS; + else if (pcap_strcasecmp($1, "fromds") == 0) + $$ = IEEE80211_FC1_DIR_FROMDS; + else if (pcap_strcasecmp($1, "dstods") == 0) + $$ = IEEE80211_FC1_DIR_DSTODS; + else + bpf_error("unknown 802.11 direction"); + } + ; + +reason: NUM { $$ = $1; } + | ID { $$ = pfreason_to_num($1); } + ; + +action: ID { $$ = pfaction_to_num($1); } + ; + +relop: '>' { $$ = BPF_JGT; } + | GEQ { $$ = BPF_JGE; } + | '=' { $$ = BPF_JEQ; } + ; +irelop: LEQ { $$ = BPF_JGT; } + | '<' { $$ = BPF_JGE; } + | NEQ { $$ = BPF_JEQ; } + ; +arth: pnum { $$ = gen_loadi($1); } + | narth + ; +narth: pname '[' arth ']' { $$ = gen_load($1, $3, 1); } + | pname '[' arth ':' NUM ']' { $$ = gen_load($1, $3, $5); } + | arth '+' arth { $$ = gen_arth(BPF_ADD, $1, $3); } + | arth '-' arth { $$ = gen_arth(BPF_SUB, $1, $3); } + | arth '*' arth { $$ = gen_arth(BPF_MUL, $1, $3); } + | arth '/' arth { $$ = gen_arth(BPF_DIV, $1, $3); } + | arth '&' arth { $$ = gen_arth(BPF_AND, $1, $3); } + | arth '|' arth { $$ = gen_arth(BPF_OR, $1, $3); } + | arth LSH arth { $$ = gen_arth(BPF_LSH, $1, $3); } + | arth RSH arth { $$ = gen_arth(BPF_RSH, $1, $3); } + | '-' arth %prec UMINUS { $$ = gen_neg($2); } + | paren narth ')' { $$ = $2; } + | LEN { $$ = gen_loadlen(); } + ; +byteop: '&' { $$ = '&'; } + | '|' { $$ = '|'; } + | '<' { $$ = '<'; } + | '>' { $$ = '>'; } + | '=' { $$ = '='; } + ; +pnum: NUM + | paren pnum ')' { $$ = $2; } + ; +atmtype: LANE { $$ = A_LANE; } + | LLC { $$ = A_LLC; } + | METAC { $$ = A_METAC; } + | BCC { $$ = A_BCC; } + | OAMF4EC { $$ = A_OAMF4EC; } + | OAMF4SC { $$ = A_OAMF4SC; } + | SC { $$ = A_SC; } + | ILMIC { $$ = A_ILMIC; } + ; +atmmultitype: OAM { $$ = A_OAM; } + | OAMF4 { $$ = A_OAMF4; } + | CONNECTMSG { $$ = A_CONNECTMSG; } + | METACONNECT { $$ = A_METACONNECT; } + ; + /* ATM field types quantifier */ +atmfield: VPI { $$.atmfieldtype = A_VPI; } + | VCI { $$.atmfieldtype = A_VCI; } + ; +atmvalue: atmfieldvalue + | relop NUM { $$.b = gen_atmfield_code($0.atmfieldtype, (bpf_int32)$2, (bpf_u_int32)$1, 0); } + | irelop NUM { $$.b = gen_atmfield_code($0.atmfieldtype, (bpf_int32)$2, (bpf_u_int32)$1, 1); } + | paren atmlistvalue ')' { $$.b = $2.b; $$.q = qerr; } + ; +atmfieldvalue: NUM { + $$.atmfieldtype = $0.atmfieldtype; + if ($$.atmfieldtype == A_VPI || + $$.atmfieldtype == A_VCI) + $$.b = gen_atmfield_code($$.atmfieldtype, (bpf_int32) $1, BPF_JEQ, 0); + } + ; +atmlistvalue: atmfieldvalue + | atmlistvalue or atmfieldvalue { gen_or($1.b, $3.b); $$ = $3; } + ; + /* MTP2 types quantifier */ +mtp2type: FISU { $$ = M_FISU; } + | LSSU { $$ = M_LSSU; } + | MSU { $$ = M_MSU; } + ; + /* MTP3 field types quantifier */ +mtp3field: SIO { $$.mtp3fieldtype = M_SIO; } + | OPC { $$.mtp3fieldtype = M_OPC; } + | DPC { $$.mtp3fieldtype = M_DPC; } + | SLS { $$.mtp3fieldtype = M_SLS; } + ; +mtp3value: mtp3fieldvalue + | relop NUM { $$.b = gen_mtp3field_code($0.mtp3fieldtype, (u_int)$2, (u_int)$1, 0); } + | irelop NUM { $$.b = gen_mtp3field_code($0.mtp3fieldtype, (u_int)$2, (u_int)$1, 1); } + | paren mtp3listvalue ')' { $$.b = $2.b; $$.q = qerr; } + ; +mtp3fieldvalue: NUM { + $$.mtp3fieldtype = $0.mtp3fieldtype; + if ($$.mtp3fieldtype == M_SIO || + $$.mtp3fieldtype == M_OPC || + $$.mtp3fieldtype == M_DPC || + $$.mtp3fieldtype == M_SLS ) + $$.b = gen_mtp3field_code($$.mtp3fieldtype, (u_int) $1, BPF_JEQ, 0); + } + ; +mtp3listvalue: mtp3fieldvalue + | mtp3listvalue or mtp3fieldvalue { gen_or($1.b, $3.b); $$ = $3; } + ; +%% diff --git a/ieee80211.h b/ieee80211.h new file mode 100644 index 0000000..473803d --- /dev/null +++ b/ieee80211.h @@ -0,0 +1,146 @@ +/*- + * Copyright (c) 2001 Atsushi Onoe + * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD: src/sys/net80211/ieee80211.h,v 1.10 2005/07/22 16:55:27 sam Exp $ + */ +#ifndef _NET80211_IEEE80211_H_ +#define _NET80211_IEEE80211_H_ + +/* + * 802.11 protocol definitions. + */ + +#define IEEE80211_FC0_VERSION_MASK 0x03 +#define IEEE80211_FC0_VERSION_SHIFT 0 +#define IEEE80211_FC0_VERSION_0 0x00 +#define IEEE80211_FC0_TYPE_MASK 0x0c +#define IEEE80211_FC0_TYPE_SHIFT 2 +#define IEEE80211_FC0_TYPE_MGT 0x00 +#define IEEE80211_FC0_TYPE_CTL 0x04 +#define IEEE80211_FC0_TYPE_DATA 0x08 + +#define IEEE80211_FC0_SUBTYPE_MASK 0xf0 +#define IEEE80211_FC0_SUBTYPE_SHIFT 4 +/* for TYPE_MGT */ +#define IEEE80211_FC0_SUBTYPE_ASSOC_REQ 0x00 +#define IEEE80211_FC0_SUBTYPE_ASSOC_RESP 0x10 +#define IEEE80211_FC0_SUBTYPE_REASSOC_REQ 0x20 +#define IEEE80211_FC0_SUBTYPE_REASSOC_RESP 0x30 +#define IEEE80211_FC0_SUBTYPE_PROBE_REQ 0x40 +#define IEEE80211_FC0_SUBTYPE_PROBE_RESP 0x50 +#define IEEE80211_FC0_SUBTYPE_BEACON 0x80 +#define IEEE80211_FC0_SUBTYPE_ATIM 0x90 +#define IEEE80211_FC0_SUBTYPE_DISASSOC 0xa0 +#define IEEE80211_FC0_SUBTYPE_AUTH 0xb0 +#define IEEE80211_FC0_SUBTYPE_DEAUTH 0xc0 +/* for TYPE_CTL */ +#define IEEE80211_FC0_SUBTYPE_PS_POLL 0xa0 +#define IEEE80211_FC0_SUBTYPE_RTS 0xb0 +#define IEEE80211_FC0_SUBTYPE_CTS 0xc0 +#define IEEE80211_FC0_SUBTYPE_ACK 0xd0 +#define IEEE80211_FC0_SUBTYPE_CF_END 0xe0 +#define IEEE80211_FC0_SUBTYPE_CF_END_ACK 0xf0 +/* for TYPE_DATA (bit combination) */ +#define IEEE80211_FC0_SUBTYPE_DATA 0x00 +#define IEEE80211_FC0_SUBTYPE_CF_ACK 0x10 +#define IEEE80211_FC0_SUBTYPE_CF_POLL 0x20 +#define IEEE80211_FC0_SUBTYPE_CF_ACPL 0x30 +#define IEEE80211_FC0_SUBTYPE_NODATA 0x40 +#define IEEE80211_FC0_SUBTYPE_NODATA_CF_ACK 0x50 +#define IEEE80211_FC0_SUBTYPE_NODATA_CF_POLL 0x60 +#define IEEE80211_FC0_SUBTYPE_NODATA_CF_ACPL 0x70 +#define IEEE80211_FC0_SUBTYPE_QOS 0x80 +#define IEEE80211_FC0_SUBTYPE_QOS_NULL 0xc0 + +#define IEEE80211_FC1_DIR_MASK 0x03 +#define IEEE80211_FC1_DIR_NODS 0x00 /* STA->STA */ +#define IEEE80211_FC1_DIR_TODS 0x01 /* STA->AP */ +#define IEEE80211_FC1_DIR_FROMDS 0x02 /* AP ->STA */ +#define IEEE80211_FC1_DIR_DSTODS 0x03 /* AP ->AP */ + +#define IEEE80211_FC1_MORE_FRAG 0x04 +#define IEEE80211_FC1_RETRY 0x08 +#define IEEE80211_FC1_PWR_MGT 0x10 +#define IEEE80211_FC1_MORE_DATA 0x20 +#define IEEE80211_FC1_WEP 0x40 +#define IEEE80211_FC1_ORDER 0x80 + +#define IEEE80211_SEQ_FRAG_MASK 0x000f +#define IEEE80211_SEQ_FRAG_SHIFT 0 +#define IEEE80211_SEQ_SEQ_MASK 0xfff0 +#define IEEE80211_SEQ_SEQ_SHIFT 4 + +#define IEEE80211_NWID_LEN 32 + +#define IEEE80211_QOS_TXOP 0x00ff +/* bit 8 is reserved */ +#define IEEE80211_QOS_ACKPOLICY 0x60 +#define IEEE80211_QOS_ACKPOLICY_S 5 +#define IEEE80211_QOS_ESOP 0x10 +#define IEEE80211_QOS_ESOP_S 4 +#define IEEE80211_QOS_TID 0x0f + +#define IEEE80211_MGT_SUBTYPE_NAMES { \ + "assoc-req", "assoc-resp", \ + "reassoc-req", "reassoc-resp", \ + "probe-req", "probe-resp", \ + "reserved#6", "reserved#7", \ + "beacon", "atim", \ + "disassoc", "auth", \ + "deauth", "reserved#13", \ + "reserved#14", "reserved#15" \ +} + +#define IEEE80211_CTL_SUBTYPE_NAMES { \ + "reserved#0", "reserved#1", \ + "reserved#2", "reserved#3", \ + "reserved#3", "reserved#5", \ + "reserved#6", "reserved#7", \ + "reserved#8", "reserved#9", \ + "ps-poll", "rts", \ + "cts", "ack", \ + "cf-end", "cf-end-ack" \ +} + +#define IEEE80211_DATA_SUBTYPE_NAMES { \ + "data", "data-cf-ack", \ + "data-cf-poll", "data-cf-ack-poll", \ + "null", "cf-ack", \ + "cf-poll", "cf-ack-poll", \ + "qos-data", "qos-data-cf-ack", \ + "qos-data-cf-poll", "qos-data-cf-ack-poll", \ + "qos", "reserved#13", \ + "qos-cf-poll", "qos-cf-ack-poll" \ +} + +#define IEEE80211_TYPE_NAMES { "mgt", "ctl", "data", "reserved#4" } + +#endif /* _NET80211_IEEE80211_H_ */ diff --git a/inet.c b/inet.c new file mode 100644 index 0000000..6ae46ef --- /dev/null +++ b/inet.c @@ -0,0 +1,933 @@ +/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */ +/* + * Copyright (c) 1994, 1995, 1996, 1997, 1998 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/inet.c,v 1.79 2008-04-20 18:19:02 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef WIN32 +#include +#else /* WIN32 */ + +#include +#ifndef MSDOS +#include +#endif +#include +#include +#ifdef HAVE_SYS_SOCKIO_H +#include +#endif + +struct mbuf; /* Squelch compiler warnings on some platforms for */ +struct rtentry; /* declarations in */ +#include +#include +#endif /* WIN32 */ + +#include +#include +#include +#include +#include +#include +#if !defined(WIN32) && !defined(__BORLANDC__) +#include +#endif /* !WIN32 && !__BORLANDC__ */ +#ifdef HAVE_LIMITS_H +#include +#else +#define INT_MAX 2147483647 +#endif + +#include "pcap-int.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +/* Not all systems have IFF_LOOPBACK */ +#ifdef IFF_LOOPBACK +#define ISLOOPBACK(name, flags) ((flags) & IFF_LOOPBACK) +#else +#define ISLOOPBACK(name, flags) ((name)[0] == 'l' && (name)[1] == 'o' && \ + (isdigit((unsigned char)((name)[2])) || (name)[2] == '\0')) +#endif + +struct sockaddr * +dup_sockaddr(struct sockaddr *sa, size_t sa_length) +{ + struct sockaddr *newsa; + + if ((newsa = malloc(sa_length)) == NULL) + return (NULL); + return (memcpy(newsa, sa, sa_length)); +} + +static int +get_instance(const char *name) +{ + const char *cp, *endcp; + int n; + + if (strcmp(name, "any") == 0) { + /* + * Give the "any" device an artificially high instance + * number, so it shows up after all other non-loopback + * interfaces. + */ + return INT_MAX; + } + + endcp = name + strlen(name); + for (cp = name; cp < endcp && !isdigit((unsigned char)*cp); ++cp) + continue; + + if (isdigit((unsigned char)*cp)) + n = atoi(cp); + else + n = 0; + return (n); +} + +int +add_or_find_if(pcap_if_t **curdev_ret, pcap_if_t **alldevs, const char *name, + u_int flags, const char *description, char *errbuf) +{ + pcap_t *p; + pcap_if_t *curdev, *prevdev, *nextdev; + int this_instance; + char open_errbuf[PCAP_ERRBUF_SIZE]; + + /* + * Is there already an entry in the list for this interface? + */ + for (curdev = *alldevs; curdev != NULL; curdev = curdev->next) { + if (strcmp(name, curdev->name) == 0) + break; /* yes, we found it */ + } + + if (curdev == NULL) { + /* + * No, we didn't find it. + * + * Can we open this interface for live capture? + * + * We do this check so that interfaces that are + * supplied by the interface enumeration mechanism + * we're using but that don't support packet capture + * aren't included in the list. Loopback interfaces + * on Solaris are an example of this; we don't just + * omit loopback interfaces on all platforms because + * you *can* capture on loopback interfaces on some + * OSes. + * + * On OS X, we don't do this check if the device + * name begins with "wlt"; at least some versions + * of OS X offer monitor mode capturing by having + * a separate "monitor mode" device for each wireless + * adapter, rather than by implementing the ioctls + * that {Free,Net,Open,DragonFly}BSD provide. + * Opening that device puts the adapter into monitor + * mode, which, at least for some adapters, causes + * them to deassociate from the network with which + * they're associated. + * + * Instead, we try to open the corresponding "en" + * device (so that we don't end up with, for users + * without sufficient privilege to open capture + * devices, a list of adapters that only includes + * the wlt devices). + */ +#ifdef __APPLE__ + if (strncmp(name, "wlt", 3) == 0) { + char *en_name; + size_t en_name_len; + + /* + * Try to allocate a buffer for the "en" + * device's name. + */ + en_name_len = strlen(name) - 1; + en_name = malloc(en_name_len + 1); + if (en_name == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + return (-1); + } + strcpy(en_name, "en"); + strcat(en_name, name + 3); + p = pcap_open_live(en_name, 68, 0, 0, open_errbuf); + free(en_name); + } else +#endif /* __APPLE */ + p = pcap_open_live(name, 68, 0, 0, open_errbuf); + if (p == NULL) { + /* + * No. Don't bother including it. + * Don't treat this as an error, though. + */ + *curdev_ret = NULL; + return (0); + } + pcap_close(p); + + /* + * Yes, we can open it. + * Allocate a new entry. + */ + curdev = malloc(sizeof(pcap_if_t)); + if (curdev == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + return (-1); + } + + /* + * Fill in the entry. + */ + curdev->next = NULL; + curdev->name = strdup(name); + if (curdev->name == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + free(curdev); + return (-1); + } + if (description != NULL) { + /* + * We have a description for this interface. + */ + curdev->description = strdup(description); + if (curdev->description == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + free(curdev->name); + free(curdev); + return (-1); + } + } else { + /* + * We don't. + */ + curdev->description = NULL; + } + curdev->addresses = NULL; /* list starts out as empty */ + curdev->flags = 0; + if (ISLOOPBACK(name, flags)) + curdev->flags |= PCAP_IF_LOOPBACK; + + /* + * Add it to the list, in the appropriate location. + * First, get the instance number of this interface. + */ + this_instance = get_instance(name); + + /* + * Now look for the last interface with an instance number + * less than or equal to the new interface's instance + * number - except that non-loopback interfaces are + * arbitrarily treated as having interface numbers less + * than those of loopback interfaces, so the loopback + * interfaces are put at the end of the list. + * + * We start with "prevdev" being NULL, meaning we're before + * the first element in the list. + */ + prevdev = NULL; + for (;;) { + /* + * Get the interface after this one. + */ + if (prevdev == NULL) { + /* + * The next element is the first element. + */ + nextdev = *alldevs; + } else + nextdev = prevdev->next; + + /* + * Are we at the end of the list? + */ + if (nextdev == NULL) { + /* + * Yes - we have to put the new entry + * after "prevdev". + */ + break; + } + + /* + * Is the new interface a non-loopback interface + * and the next interface a loopback interface? + */ + if (!(curdev->flags & PCAP_IF_LOOPBACK) && + (nextdev->flags & PCAP_IF_LOOPBACK)) { + /* + * Yes, we should put the new entry + * before "nextdev", i.e. after "prevdev". + */ + break; + } + + /* + * Is the new interface's instance number less + * than the next interface's instance number, + * and is it the case that the new interface is a + * non-loopback interface or the next interface is + * a loopback interface? + * + * (The goal of both loopback tests is to make + * sure that we never put a loopback interface + * before any non-loopback interface and that we + * always put a non-loopback interface before all + * loopback interfaces.) + */ + if (this_instance < get_instance(nextdev->name) && + (!(curdev->flags & PCAP_IF_LOOPBACK) || + (nextdev->flags & PCAP_IF_LOOPBACK))) { + /* + * Yes - we should put the new entry + * before "nextdev", i.e. after "prevdev". + */ + break; + } + + prevdev = nextdev; + } + + /* + * Insert before "nextdev". + */ + curdev->next = nextdev; + + /* + * Insert after "prevdev" - unless "prevdev" is null, + * in which case this is the first interface. + */ + if (prevdev == NULL) { + /* + * This is the first interface. Pass back a + * pointer to it, and put "curdev" before + * "nextdev". + */ + *alldevs = curdev; + } else + prevdev->next = curdev; + } + + *curdev_ret = curdev; + return (0); +} + +/* + * XXX - on FreeBSDs that support it, should it get the sysctl named + * "dev.{adapter family name}.{adapter unit}.%desc" to get a description + * of the adapter? Note that "dev.an.0.%desc" is "Aironet PC4500/PC4800" + * with my Cisco 350 card, so the name isn't entirely descriptive. The + * "dev.an.0.%pnpinfo" has a better description, although one might argue + * that the problem is really a driver bug - if it can find out that it's + * a Cisco 340 or 350, rather than an old Aironet card, it should use + * that in the description. + * + * Do NetBSD, DragonflyBSD, or OpenBSD support this as well? FreeBSD + * and OpenBSD let you get a description, but it's not generated by the OS, + * it's set with another ioctl that ifconfig supports; we use that to get + * a description in FreeBSD and OpenBSD, but if there is no such + * description available, it still might be nice to get some description + * string based on the device type or something such as that. + * + * In OS X, the System Configuration framework can apparently return + * names in 10.4 and later. + * + * It also appears that freedesktop.org's HAL offers an "info.product" + * string, but the HAL specification says it "should not be used in any + * UI" and "subsystem/capability specific properties" should be used + * instead and, in any case, I think HAL is being deprecated in + * favor of other stuff such as DeviceKit. DeviceKit doesn't appear + * to have any obvious product information for devices, but maybe + * I haven't looked hard enough. + * + * Using the System Configuration framework, or HAL, or DeviceKit, or + * whatever, would require that libpcap applications be linked with + * the frameworks/libraries in question. That shouldn't be a problem + * for programs linking with the shared version of libpcap (unless + * you're running on AIX - which I think is the only UN*X that doesn't + * support linking a shared library with other libraries on which it + * depends, and having an executable linked only with the first shared + * library automatically pick up the other libraries when started - + * and using HAL or whatever). Programs linked with the static + * version of libpcap would have to use pcap-config with the --static + * flag in order to get the right linker flags in order to pick up + * the additional libraries/frameworks; those programs need that anyway + * for libpcap 1.1 and beyond on Linux, as, by default, it requires + * -lnl. + * + * Do any other UN*Xes, or desktop environments support getting a + * description? + */ +int +add_addr_to_iflist(pcap_if_t **alldevs, const char *name, u_int flags, + struct sockaddr *addr, size_t addr_size, + struct sockaddr *netmask, size_t netmask_size, + struct sockaddr *broadaddr, size_t broadaddr_size, + struct sockaddr *dstaddr, size_t dstaddr_size, + char *errbuf) +{ + pcap_if_t *curdev; + char *description = NULL; + pcap_addr_t *curaddr, *prevaddr, *nextaddr; +#ifdef SIOCGIFDESCR + int s; + struct ifreq ifrdesc; +#ifndef IFDESCRSIZE + size_t descrlen = 64; +#else + size_t descrlen = IFDESCRSIZE; +#endif /* IFDESCRSIZE */ +#endif /* SIOCGIFDESCR */ + +#ifdef SIOCGIFDESCR + /* + * Get the description for the interface. + */ + memset(&ifrdesc, 0, sizeof ifrdesc); + strlcpy(ifrdesc.ifr_name, name, sizeof ifrdesc.ifr_name); + s = socket(AF_INET, SOCK_DGRAM, 0); + if (s >= 0) { +#ifdef __FreeBSD__ + /* + * On FreeBSD, if the buffer isn't big enough for the + * description, the ioctl succeeds, but the description + * isn't copied, ifr_buffer.length is set to the description + * length, and ifr_buffer.buffer is set to NULL. + */ + for (;;) { + free(description); + if ((description = malloc(descrlen)) != NULL) { + ifrdesc.ifr_buffer.buffer = description; + ifrdesc.ifr_buffer.length = descrlen; + if (ioctl(s, SIOCGIFDESCR, &ifrdesc) == 0) { + if (ifrdesc.ifr_buffer.buffer == + description) + break; + else + descrlen = ifrdesc.ifr_buffer.length; + } else { + /* + * Failed to get interface description. + */ + free(description); + description = NULL; + break; + } + } else + break; + } +#else /* __FreeBSD__ */ + /* + * The only other OS that currently supports + * SIOCGIFDESCR is OpenBSD, and it has no way + * to get the description length - it's clamped + * to a maximum of IFDESCRSIZE. + */ + if ((description = malloc(descrlen)) != NULL) { + ifrdesc.ifr_data = (caddr_t)description; + if (ioctl(s, SIOCGIFDESCR, &ifrdesc) != 0) { + /* + * Failed to get interface description. + */ + free(description); + description = NULL; + } + } +#endif /* __FreeBSD__ */ + close(s); + if (description != NULL && strlen(description) == 0) { + free(description); + description = NULL; + } + } +#endif /* SIOCGIFDESCR */ + + if (add_or_find_if(&curdev, alldevs, name, flags, description, + errbuf) == -1) { + free(description); + /* + * Error - give up. + */ + return (-1); + } + free(description); + if (curdev == NULL) { + /* + * Device wasn't added because it can't be opened. + * Not a fatal error. + */ + return (0); + } + + /* + * "curdev" is an entry for this interface; add an entry for this + * address to its list of addresses. + * + * Allocate the new entry and fill it in. + */ + curaddr = malloc(sizeof(pcap_addr_t)); + if (curaddr == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + return (-1); + } + + curaddr->next = NULL; + if (addr != NULL) { + curaddr->addr = dup_sockaddr(addr, addr_size); + if (curaddr->addr == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + free(curaddr); + return (-1); + } + } else + curaddr->addr = NULL; + + if (netmask != NULL) { + curaddr->netmask = dup_sockaddr(netmask, netmask_size); + if (curaddr->netmask == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + if (curaddr->addr != NULL) + free(curaddr->addr); + free(curaddr); + return (-1); + } + } else + curaddr->netmask = NULL; + + if (broadaddr != NULL) { + curaddr->broadaddr = dup_sockaddr(broadaddr, broadaddr_size); + if (curaddr->broadaddr == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + if (curaddr->netmask != NULL) + free(curaddr->netmask); + if (curaddr->addr != NULL) + free(curaddr->addr); + free(curaddr); + return (-1); + } + } else + curaddr->broadaddr = NULL; + + if (dstaddr != NULL) { + curaddr->dstaddr = dup_sockaddr(dstaddr, dstaddr_size); + if (curaddr->dstaddr == NULL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + if (curaddr->broadaddr != NULL) + free(curaddr->broadaddr); + if (curaddr->netmask != NULL) + free(curaddr->netmask); + if (curaddr->addr != NULL) + free(curaddr->addr); + free(curaddr); + return (-1); + } + } else + curaddr->dstaddr = NULL; + + /* + * Find the end of the list of addresses. + */ + for (prevaddr = curdev->addresses; prevaddr != NULL; prevaddr = nextaddr) { + nextaddr = prevaddr->next; + if (nextaddr == NULL) { + /* + * This is the end of the list. + */ + break; + } + } + + if (prevaddr == NULL) { + /* + * The list was empty; this is the first member. + */ + curdev->addresses = curaddr; + } else { + /* + * "prevaddr" is the last member of the list; append + * this member to it. + */ + prevaddr->next = curaddr; + } + + return (0); +} + +int +pcap_add_if(pcap_if_t **devlist, const char *name, u_int flags, + const char *description, char *errbuf) +{ + pcap_if_t *curdev; + + return (add_or_find_if(&curdev, devlist, name, flags, description, + errbuf)); +} + + +/* + * Free a list of interfaces. + */ +void +pcap_freealldevs(pcap_if_t *alldevs) +{ + pcap_if_t *curdev, *nextdev; + pcap_addr_t *curaddr, *nextaddr; + + for (curdev = alldevs; curdev != NULL; curdev = nextdev) { + nextdev = curdev->next; + + /* + * Free all addresses. + */ + for (curaddr = curdev->addresses; curaddr != NULL; curaddr = nextaddr) { + nextaddr = curaddr->next; + if (curaddr->addr) + free(curaddr->addr); + if (curaddr->netmask) + free(curaddr->netmask); + if (curaddr->broadaddr) + free(curaddr->broadaddr); + if (curaddr->dstaddr) + free(curaddr->dstaddr); + free(curaddr); + } + + /* + * Free the name string. + */ + free(curdev->name); + + /* + * Free the description string, if any. + */ + if (curdev->description != NULL) + free(curdev->description); + + /* + * Free the interface. + */ + free(curdev); + } +} + +#if !defined(WIN32) && !defined(MSDOS) + +/* + * Return the name of a network interface attached to the system, or NULL + * if none can be found. The interface must be configured up; the + * lowest unit number is preferred; loopback is ignored. + */ +char * +pcap_lookupdev(errbuf) + register char *errbuf; +{ + pcap_if_t *alldevs; +/* for old BSD systems, including bsdi3 */ +#ifndef IF_NAMESIZE +#define IF_NAMESIZE IFNAMSIZ +#endif + static char device[IF_NAMESIZE + 1]; + char *ret; + + if (pcap_findalldevs(&alldevs, errbuf) == -1) + return (NULL); + + if (alldevs == NULL || (alldevs->flags & PCAP_IF_LOOPBACK)) { + /* + * There are no devices on the list, or the first device + * on the list is a loopback device, which means there + * are no non-loopback devices on the list. This means + * we can't return any device. + * + * XXX - why not return a loopback device? If we can't + * capture on it, it won't be on the list, and if it's + * on the list, there aren't any non-loopback devices, + * so why not just supply it as the default device? + */ + (void)strlcpy(errbuf, "no suitable device found", + PCAP_ERRBUF_SIZE); + ret = NULL; + } else { + /* + * Return the name of the first device on the list. + */ + (void)strlcpy(device, alldevs->name, sizeof(device)); + ret = device; + } + + pcap_freealldevs(alldevs); + return (ret); +} + +int +pcap_lookupnet(device, netp, maskp, errbuf) + register const char *device; + register bpf_u_int32 *netp, *maskp; + register char *errbuf; +{ + register int fd; + register struct sockaddr_in *sin4; + struct ifreq ifr; + + /* + * The pseudo-device "any" listens on all interfaces and therefore + * has the network address and -mask "0.0.0.0" therefore catching + * all traffic. Using NULL for the interface is the same as "any". + */ + if (!device || strcmp(device, "any") == 0 +#ifdef HAVE_DAG_API + || strstr(device, "dag") != NULL +#endif +#ifdef HAVE_SEPTEL_API + || strstr(device, "septel") != NULL +#endif +#ifdef PCAP_SUPPORT_BT + || strstr(device, "bluetooth") != NULL +#endif +#ifdef PCAP_SUPPORT_USB + || strstr(device, "usbmon") != NULL +#endif +#ifdef HAVE_SNF_API + || strstr(device, "snf") != NULL +#endif + ) { + *netp = *maskp = 0; + return 0; + } + + fd = socket(AF_INET, SOCK_DGRAM, 0); + if (fd < 0) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "socket: %s", + pcap_strerror(errno)); + return (-1); + } + memset(&ifr, 0, sizeof(ifr)); +#ifdef linux + /* XXX Work around Linux kernel bug */ + ifr.ifr_addr.sa_family = AF_INET; +#endif + (void)strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name)); + if (ioctl(fd, SIOCGIFADDR, (char *)&ifr) < 0) { + if (errno == EADDRNOTAVAIL) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "%s: no IPv4 address assigned", device); + } else { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGIFADDR: %s: %s", + device, pcap_strerror(errno)); + } + (void)close(fd); + return (-1); + } + sin4 = (struct sockaddr_in *)&ifr.ifr_addr; + *netp = sin4->sin_addr.s_addr; + memset(&ifr, 0, sizeof(ifr)); +#ifdef linux + /* XXX Work around Linux kernel bug */ + ifr.ifr_addr.sa_family = AF_INET; +#endif + (void)strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name)); + if (ioctl(fd, SIOCGIFNETMASK, (char *)&ifr) < 0) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGIFNETMASK: %s: %s", device, pcap_strerror(errno)); + (void)close(fd); + return (-1); + } + (void)close(fd); + *maskp = sin4->sin_addr.s_addr; + if (*maskp == 0) { + if (IN_CLASSA(*netp)) + *maskp = IN_CLASSA_NET; + else if (IN_CLASSB(*netp)) + *maskp = IN_CLASSB_NET; + else if (IN_CLASSC(*netp)) + *maskp = IN_CLASSC_NET; + else { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "inet class for 0x%x unknown", *netp); + return (-1); + } + } + *netp &= *maskp; + return (0); +} + +#elif defined(WIN32) + +/* + * Return the name of a network interface attached to the system, or NULL + * if none can be found. The interface must be configured up; the + * lowest unit number is preferred; loopback is ignored. + */ +char * +pcap_lookupdev(errbuf) + register char *errbuf; +{ + DWORD dwVersion; + DWORD dwWindowsMajorVersion; + dwVersion = GetVersion(); /* get the OS version */ + dwWindowsMajorVersion = (DWORD)(LOBYTE(LOWORD(dwVersion))); + + if (dwVersion >= 0x80000000 && dwWindowsMajorVersion >= 4) { + /* + * Windows 95, 98, ME. + */ + ULONG NameLength = 8192; + static char AdaptersName[8192]; + + if (PacketGetAdapterNames(AdaptersName,&NameLength) ) + return (AdaptersName); + else + return NULL; + } else { + /* + * Windows NT (NT 4.0, W2K, WXP). Convert the names to UNICODE for backward compatibility + */ + ULONG NameLength = 8192; + static WCHAR AdaptersName[8192]; + char *tAstr; + WCHAR *tUstr; + WCHAR *TAdaptersName = (WCHAR*)malloc(8192 * sizeof(WCHAR)); + int NAdapts = 0; + + if(TAdaptersName == NULL) + { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "memory allocation failure"); + return NULL; + } + + if ( !PacketGetAdapterNames((PTSTR)TAdaptersName,&NameLength) ) + { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "PacketGetAdapterNames: %s", + pcap_win32strerror()); + free(TAdaptersName); + return NULL; + } + + + tAstr = (char*)TAdaptersName; + tUstr = (WCHAR*)AdaptersName; + + /* + * Convert and copy the device names + */ + while(sscanf(tAstr, "%S", tUstr) > 0) + { + tAstr += strlen(tAstr) + 1; + tUstr += wcslen(tUstr) + 1; + NAdapts ++; + } + + tAstr++; + *tUstr = 0; + tUstr++; + + /* + * Copy the descriptions + */ + while(NAdapts--) + { + char* tmp = (char*)tUstr; + strcpy(tmp, tAstr); + tmp += strlen(tAstr) + 1; + tUstr = (WCHAR*)tmp; + tAstr += strlen(tAstr) + 1; + } + + free(TAdaptersName); + return (char *)(AdaptersName); + } +} + + +int +pcap_lookupnet(device, netp, maskp, errbuf) + register const char *device; + register bpf_u_int32 *netp, *maskp; + register char *errbuf; +{ + /* + * We need only the first IPv4 address, so we must scan the array returned by PacketGetNetInfo() + * in order to skip non IPv4 (i.e. IPv6 addresses) + */ + npf_if_addr if_addrs[MAX_NETWORK_ADDRESSES]; + LONG if_addr_size = 1; + struct sockaddr_in *t_addr; + unsigned int i; + + if (!PacketGetNetInfoEx((void *)device, if_addrs, &if_addr_size)) { + *netp = *maskp = 0; + return (0); + } + + for(i=0; isin_addr.S_un.S_addr; + t_addr = (struct sockaddr_in *) &(if_addrs[i].SubnetMask); + *maskp = t_addr->sin_addr.S_un.S_addr; + + *netp &= *maskp; + return (0); + } + + } + + *netp = *maskp = 0; + return (0); +} + +#endif /* !WIN32 && !MSDOS */ diff --git a/install-sh b/install-sh new file mode 100755 index 0000000..ebc6691 --- /dev/null +++ b/install-sh @@ -0,0 +1,250 @@ +#! /bin/sh +# +# install - install a program, script, or datafile +# This comes from X11R5 (mit/util/scripts/install.sh). +# +# Copyright 1991 by the Massachusetts Institute of Technology +# +# Permission to use, copy, modify, distribute, and sell this software and its +# documentation for any purpose is hereby granted without fee, provided that +# the above copyright notice appear in all copies and that both that +# copyright notice and this permission notice appear in supporting +# documentation, and that the name of M.I.T. not be used in advertising or +# publicity pertaining to distribution of the software without specific, +# written prior permission. M.I.T. makes no representations about the +# suitability of this software for any purpose. It is provided "as is" +# without express or implied warranty. +# +# Calling this script install-sh is preferred over install.sh, to prevent +# `make' implicit rules from creating a file called install from it +# when there is no Makefile. +# +# This script is compatible with the BSD install script, but was written +# from scratch. It can only install one file at a time, a restriction +# shared with many OS's install programs. + + +# set DOITPROG to echo to test this script + +# Don't use :- since 4.3BSD and earlier shells don't like it. +doit="${DOITPROG-}" + + +# put in absolute paths if you don't have them in your path; or use env. vars. + +mvprog="${MVPROG-mv}" +cpprog="${CPPROG-cp}" +chmodprog="${CHMODPROG-chmod}" +chownprog="${CHOWNPROG-chown}" +chgrpprog="${CHGRPPROG-chgrp}" +stripprog="${STRIPPROG-strip}" +rmprog="${RMPROG-rm}" +mkdirprog="${MKDIRPROG-mkdir}" + +transformbasename="" +transform_arg="" +instcmd="$mvprog" +chmodcmd="$chmodprog 0755" +chowncmd="" +chgrpcmd="" +stripcmd="" +rmcmd="$rmprog -f" +mvcmd="$mvprog" +src="" +dst="" +dir_arg="" + +while [ x"$1" != x ]; do + case $1 in + -c) instcmd="$cpprog" + shift + continue;; + + -d) dir_arg=true + shift + continue;; + + -m) chmodcmd="$chmodprog $2" + shift + shift + continue;; + + -o) chowncmd="$chownprog $2" + shift + shift + continue;; + + -g) chgrpcmd="$chgrpprog $2" + shift + shift + continue;; + + -s) stripcmd="$stripprog" + shift + continue;; + + -t=*) transformarg=`echo $1 | sed 's/-t=//'` + shift + continue;; + + -b=*) transformbasename=`echo $1 | sed 's/-b=//'` + shift + continue;; + + *) if [ x"$src" = x ] + then + src=$1 + else + # this colon is to work around a 386BSD /bin/sh bug + : + dst=$1 + fi + shift + continue;; + esac +done + +if [ x"$src" = x ] +then + echo "install: no input file specified" + exit 1 +else + true +fi + +if [ x"$dir_arg" != x ]; then + dst=$src + src="" + + if [ -d $dst ]; then + instcmd=: + else + instcmd=mkdir + fi +else + +# Waiting for this to be detected by the "$instcmd $src $dsttmp" command +# might cause directories to be created, which would be especially bad +# if $src (and thus $dsttmp) contains '*'. + + if [ -f $src -o -d $src ] + then + true + else + echo "install: $src does not exist" + exit 1 + fi + + if [ x"$dst" = x ] + then + echo "install: no destination specified" + exit 1 + else + true + fi + +# If destination is a directory, append the input filename; if your system +# does not like double slashes in filenames, you may need to add some logic + + if [ -d $dst ] + then + dst="$dst"/`basename $src` + else + true + fi +fi + +## this sed command emulates the dirname command +dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'` + +# Make sure that the destination directory exists. +# this part is taken from Noah Friedman's mkinstalldirs script + +# Skip lots of stat calls in the usual case. +if [ ! -d "$dstdir" ]; then +defaultIFS=' +' +IFS="${IFS-${defaultIFS}}" + +oIFS="${IFS}" +# Some sh's can't handle IFS=/ for some reason. +IFS='%' +set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'` +IFS="${oIFS}" + +pathcomp='' + +while [ $# -ne 0 ] ; do + pathcomp="${pathcomp}${1}" + shift + + if [ ! -d "${pathcomp}" ] ; + then + $mkdirprog "${pathcomp}" + else + true + fi + + pathcomp="${pathcomp}/" +done +fi + +if [ x"$dir_arg" != x ] +then + $doit $instcmd $dst && + + if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi && + if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi && + if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi && + if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi +else + +# If we're going to rename the final executable, determine the name now. + + if [ x"$transformarg" = x ] + then + dstfile=`basename $dst` + else + dstfile=`basename $dst $transformbasename | + sed $transformarg`$transformbasename + fi + +# don't allow the sed command to completely eliminate the filename + + if [ x"$dstfile" = x ] + then + dstfile=`basename $dst` + else + true + fi + +# Make a temp file name in the proper directory. + + dsttmp=$dstdir/#inst.$$# + +# Move or copy the file name to the temp name + + $doit $instcmd $src $dsttmp && + + trap "rm -f ${dsttmp}" 0 && + +# and set any options; do chmod last to preserve setuid bits + +# If any of these fail, we abort the whole thing. If we want to +# ignore errors from any of these, just make sure not to ignore +# errors from the above "$doit $instcmd $src $dsttmp" command. + + if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi && + if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi && + if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi && + if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi && + +# Now rename the file to the real destination. + + $doit $rmcmd -f $dstdir/$dstfile && + $doit $mvcmd $dsttmp $dstdir/$dstfile + +fi && + + +exit 0 diff --git a/lbl/os-aix4.h b/lbl/os-aix4.h new file mode 100644 index 0000000..c5dfce2 --- /dev/null +++ b/lbl/os-aix4.h @@ -0,0 +1,25 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * @(#) $Header: /tcpdump/master/libpcap/lbl/os-aix4.h,v 1.1 2002-06-01 09:37:40 guy Exp $ + */ + +/* Prototypes missing in AIX 4.x */ +int ffs(int i); diff --git a/lbl/os-hpux11.h b/lbl/os-hpux11.h new file mode 100644 index 0000000..5e325a9 --- /dev/null +++ b/lbl/os-hpux11.h @@ -0,0 +1,25 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * @(#) $Header: /tcpdump/master/libpcap/lbl/os-hpux11.h,v 1.1 2002-06-01 09:37:41 guy Exp $ + */ + +/* Prototypes missing in HP-UX 11.x */ +int ffs(int i); diff --git a/lbl/os-osf4.h b/lbl/os-osf4.h new file mode 100644 index 0000000..60abcd9 --- /dev/null +++ b/lbl/os-osf4.h @@ -0,0 +1,28 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * @(#) $Header: /tcpdump/master/libpcap/lbl/os-osf4.h,v 1.2 2000-12-22 11:51:33 guy Exp $ (LBL) + */ + +/* Prototypes missing in Digital UNIX 4.x */ +int snprintf(char *, size_t, const char *, ...); +int vsnprintf(char *, size_t, const char *, va_list); +int pfopen(char *, int); + diff --git a/lbl/os-osf5.h b/lbl/os-osf5.h new file mode 100644 index 0000000..1ebcac6 --- /dev/null +++ b/lbl/os-osf5.h @@ -0,0 +1,32 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * @(#) $Header: /tcpdump/master/libpcap/lbl/os-osf5.h,v 1.2 2002-08-02 03:24:15 guy Exp $ (LBL) + */ + +/* + * Prototypes missing in Tru64 UNIX 5.x + * XXX - "snprintf()" and "vsnprintf()" aren't missing, but you have to + * #define the right value to get them defined by . + */ +int snprintf(char *, size_t, const char *, ...); +int vsnprintf(char *, size_t, const char *, va_list); +int pfopen(char *, int); + diff --git a/lbl/os-solaris2.h b/lbl/os-solaris2.h new file mode 100644 index 0000000..fae2aa3 --- /dev/null +++ b/lbl/os-solaris2.h @@ -0,0 +1,26 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * @(#) $Header: /tcpdump/master/libpcap/lbl/os-solaris2.h,v 1.19 2000-10-11 04:02:52 guy Exp $ (LBL) + */ + +/* Prototypes missing in SunOS 5 */ +char *strerror(int); +int snprintf(char *, size_t, const char *, ...); diff --git a/lbl/os-sunos4.h b/lbl/os-sunos4.h new file mode 100644 index 0000000..cfd4b04 --- /dev/null +++ b/lbl/os-sunos4.h @@ -0,0 +1,215 @@ +/* + * Copyright (c) 1989, 1990, 1993, 1994, 1995, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * @(#) $Header: /tcpdump/master/libpcap/lbl/os-sunos4.h,v 1.32 1999-10-07 23:46:41 mcr Exp $ (LBL) + */ + +/* Prototypes missing in SunOS 4 */ +#ifdef FILE +int _filbuf(FILE *); +int _flsbuf(u_char, FILE *); +int fclose(FILE *); +int fflush(FILE *); +int fgetc(FILE *); +int fprintf(FILE *, const char *, ...); +int fputc(int, FILE *); +int fputs(const char *, FILE *); +u_int fread(void *, u_int, u_int, FILE *); +int fseek(FILE *, long, int); +u_int fwrite(const void *, u_int, u_int, FILE *); +int pclose(FILE *); +void rewind(FILE *); +void setbuf(FILE *, char *); +int setlinebuf(FILE *); +int ungetc(int, FILE *); +int vfprintf(FILE *, const char *, ...); +int vprintf(const char *, ...); +#endif + +#if __GNUC__ <= 1 +int read(int, char *, u_int); +int write(int, char *, u_int); +#endif + +long a64l(const char *); +#ifdef __STDC__ +struct sockaddr; +#endif +int accept(int, struct sockaddr *, int *); +int bind(int, struct sockaddr *, int); +int bcmp(const void *, const void *, u_int); +void bcopy(const void *, void *, u_int); +void bzero(void *, int); +int chroot(const char *); +int close(int); +void closelog(void); +int connect(int, struct sockaddr *, int); +char *crypt(const char *, const char *); +int daemon(int, int); +int fchmod(int, int); +int fchown(int, int, int); +void endgrent(void); +void endpwent(void); +void endservent(void); +#ifdef __STDC__ +struct ether_addr; +#endif +struct ether_addr *ether_aton(const char *); +int flock(int, int); +#ifdef __STDC__ +struct stat; +#endif +int fstat(int, struct stat *); +#ifdef __STDC__ +struct statfs; +#endif +int fstatfs(int, struct statfs *); +int fsync(int); +#ifdef __STDC__ +struct timeb; +#endif +int ftime(struct timeb *); +int ftruncate(int, off_t); +int getdtablesize(void); +long gethostid(void); +int gethostname(char *, int); +int getopt(int, char * const *, const char *); +int getpagesize(void); +char *getpass(char *); +int getpeername(int, struct sockaddr *, int *); +int getpriority(int, int); +#ifdef __STDC__ +struct rlimit; +#endif +int getrlimit(int, struct rlimit *); +int getsockname(int, struct sockaddr *, int *); +int getsockopt(int, int, int, char *, int *); +#ifdef __STDC__ +struct timeval; +struct timezone; +#endif +int gettimeofday(struct timeval *, struct timezone *); +char *getusershell(void); +char *getwd(char *); +int initgroups(const char *, int); +int ioctl(int, int, caddr_t); +int iruserok(u_long, int, char *, char *); +int isatty(int); +int killpg(int, int); +int listen(int, int); +#ifdef __STDC__ +struct utmp; +#endif +void login(struct utmp *); +int logout(const char *); +off_t lseek(int, off_t, int); +int lstat(const char *, struct stat *); +int mkstemp(char *); +char *mktemp(char *); +int munmap(caddr_t, int); +void openlog(const char *, int, int); +void perror(const char *); +int printf(const char *, ...); +int puts(const char *); +long random(void); +int readlink(const char *, char *, int); +#ifdef __STDC__ +struct iovec; +#endif +int readv(int, struct iovec *, int); +int recv(int, char *, u_int, int); +int recvfrom(int, char *, u_int, int, struct sockaddr *, int *); +int rename(const char *, const char *); +int rcmd(char **, u_short, char *, char *, char *, int *); +int rresvport(int *); +int send(int, char *, u_int, int); +int sendto(int, char *, u_int, int, struct sockaddr *, int); +int setenv(const char *, const char *, int); +int seteuid(int); +int setpriority(int, int, int); +int select(int, fd_set *, fd_set *, fd_set *, struct timeval *); +int setpgrp(int, int); +void setpwent(void); +int setrlimit(int, struct rlimit *); +void setservent(int); +int setsockopt(int, int, int, char *, int); +int shutdown(int, int); +int sigblock(int); +void (*signal (int, void (*) (int))) (int); +int sigpause(int); +int sigsetmask(int); +#ifdef __STDC__ +struct sigvec; +#endif +int sigvec(int, struct sigvec *, struct sigvec*); +int snprintf(char *, size_t, const char *, ...); +int socket(int, int, int); +int socketpair(int, int, int, int *); +int symlink(const char *, const char *); +void srandom(int); +int sscanf(char *, const char *, ...); +int stat(const char *, struct stat *); +int statfs(char *, struct statfs *); +char *strerror(int); +int strcasecmp(const char *, const char *); +#ifdef __STDC__ +struct tm; +#endif +int strftime(char *, int, char *, struct tm *); +int strncasecmp(const char *, const char *, int); +long strtol(const char *, char **, int); +void sync(void); +void syslog(int, const char *, ...); +int system(const char *); +long tell(int); +time_t time(time_t *); +char *timezone(int, int); +int tolower(int); +int toupper(int); +int truncate(char *, off_t); +void unsetenv(const char *); +int vfork(void); +int vsprintf(char *, const char *, ...); +int writev(int, struct iovec *, int); +#ifdef __STDC__ +struct rusage; +#endif +int utimes(const char *, struct timeval *); +#if __GNUC__ <= 1 +int wait(int *); +pid_t wait3(int *, int, struct rusage *); +#endif + +/* Ugly signal hacking */ +#ifdef SIG_ERR +#undef SIG_ERR +#define SIG_ERR (void (*)(int))-1 +#undef SIG_DFL +#define SIG_DFL (void (*)(int))0 +#undef SIG_IGN +#define SIG_IGN (void (*)(int))1 + +#ifdef KERNEL +#undef SIG_CATCH +#define SIG_CATCH (void (*)(int))2 +#endif +#undef SIG_HOLD +#define SIG_HOLD (void (*)(int))3 +#endif diff --git a/lbl/os-ultrix4.h b/lbl/os-ultrix4.h new file mode 100644 index 0000000..9f2a155 --- /dev/null +++ b/lbl/os-ultrix4.h @@ -0,0 +1,39 @@ +/* + * Copyright (c) 1990, 1993, 1994, 1995, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * @(#) $Header: /tcpdump/master/libpcap/lbl/os-ultrix4.h,v 1.19 1999-10-07 23:46:41 mcr Exp $ (LBL) + */ + +/* Prototypes missing in Ultrix 4 */ +int bcmp(const char *, const char *, u_int); +void bcopy(const void *, void *, u_int); +void bzero(void *, u_int); +void endservent(void); +int getopt(int, char * const *, const char *); +#ifdef __STDC__ +struct timeval; +struct timezone; +#endif +int gettimeofday(struct timeval *, struct timezone *); +int ioctl(int, int, caddr_t); +int pfopen(char *, int); +int setlinebuf(FILE *); +int socket(int, int, int); +int strcasecmp(const char *, const char *); diff --git a/llc.h b/llc.h new file mode 100644 index 0000000..b8c221f --- /dev/null +++ b/llc.h @@ -0,0 +1,69 @@ +/* + * Copyright (c) 1993, 1994, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * @(#) $Header: /tcpdump/master/libpcap/llc.h,v 1.2 2001-01-28 09:44:50 guy Exp $ (LBL) + */ + +/* + * 802.2 LLC SAP values. + */ + +#ifndef LLCSAP_NULL +#define LLCSAP_NULL 0x00 +#endif +#ifndef LLCSAP_GLOBAL +#define LLCSAP_GLOBAL 0xff +#endif +#ifndef LLCSAP_8021B +#define LLCSAP_8021B_I 0x02 +#endif +#ifndef LLCSAP_8021B +#define LLCSAP_8021B_G 0x03 +#endif +#ifndef LLCSAP_IP +#define LLCSAP_IP 0x06 +#endif +#ifndef LLCSAP_PROWAYNM +#define LLCSAP_PROWAYNM 0x0e +#endif +#ifndef LLCSAP_8021D +#define LLCSAP_8021D 0x42 +#endif +#ifndef LLCSAP_RS511 +#define LLCSAP_RS511 0x4e +#endif +#ifndef LLCSAP_ISO8208 +#define LLCSAP_ISO8208 0x7e +#endif +#ifndef LLCSAP_PROWAY +#define LLCSAP_PROWAY 0x8e +#endif +#ifndef LLCSAP_SNAP +#define LLCSAP_SNAP 0xaa +#endif +#ifndef LLCSAP_IPX +#define LLCSAP_IPX 0xe0 +#endif +#ifndef LLCSAP_NETBEUI +#define LLCSAP_NETBEUI 0xf0 +#endif +#ifndef LLCSAP_ISONS +#define LLCSAP_ISONS 0xfe +#endif diff --git a/missing/snprintf.c b/missing/snprintf.c new file mode 100644 index 0000000..8991f24 --- /dev/null +++ b/missing/snprintf.c @@ -0,0 +1,632 @@ +/* + * Copyright (c) 1995-1999 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* $Id: snprintf.c,v 1.1 2004-04-05 22:43:51 guy Exp $ */ + +#ifdef HAVE_CONFIG_H +#include +#endif + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/missing/snprintf.c,v 1.1 2004-04-05 22:43:51 guy Exp $"; +#endif + +#include +#include +#include +#include +#include +#include + +#include + +enum format_flags { + minus_flag = 1, + plus_flag = 2, + space_flag = 4, + alternate_flag = 8, + zero_flag = 16 +}; + +/* + * Common state + */ + +struct state { + unsigned char *str; + unsigned char *s; + unsigned char *theend; + size_t sz; + size_t max_sz; + int (*append_char)(struct state *, unsigned char); + int (*reserve)(struct state *, size_t); + /* XXX - methods */ +}; + +#ifndef HAVE_VSNPRINTF +static int +sn_reserve (struct state *state, size_t n) +{ + return state->s + n > state->theend; +} + +static int +sn_append_char (struct state *state, unsigned char c) +{ + if (sn_reserve (state, 1)) { + return 1; + } else { + *state->s++ = c; + return 0; + } +} +#endif + +#if 0 +static int +as_reserve (struct state *state, size_t n) +{ + if (state->s + n > state->theend) { + int off = state->s - state->str; + unsigned char *tmp; + + if (state->max_sz && state->sz >= state->max_sz) + return 1; + + state->sz = max(state->sz * 2, state->sz + n); + if (state->max_sz) + state->sz = min(state->sz, state->max_sz); + tmp = realloc (state->str, state->sz); + if (tmp == NULL) + return 1; + state->str = tmp; + state->s = state->str + off; + state->theend = state->str + state->sz - 1; + } + return 0; +} + +static int +as_append_char (struct state *state, unsigned char c) +{ + if(as_reserve (state, 1)) + return 1; + else { + *state->s++ = c; + return 0; + } +} +#endif + +static int +append_number(struct state *state, + unsigned long num, unsigned base, char *rep, + int width, int prec, int flags, int minusp) +{ + int len = 0; + int i; + + /* given precision, ignore zero flag */ + if(prec != -1) + flags &= ~zero_flag; + else + prec = 1; + /* zero value with zero precision -> "" */ + if(prec == 0 && num == 0) + return 0; + do{ + if((*state->append_char)(state, rep[num % base])) + return 1; + len++; + num /= base; + }while(num); + prec -= len; + /* pad with prec zeros */ + while(prec-- > 0){ + if((*state->append_char)(state, '0')) + return 1; + len++; + } + /* add length of alternate prefix (added later) to len */ + if(flags & alternate_flag && (base == 16 || base == 8)) + len += base / 8; + /* pad with zeros */ + if(flags & zero_flag){ + width -= len; + if(minusp || (flags & space_flag) || (flags & plus_flag)) + width--; + while(width-- > 0){ + if((*state->append_char)(state, '0')) + return 1; + len++; + } + } + /* add alternate prefix */ + if(flags & alternate_flag && (base == 16 || base == 8)){ + if(base == 16) + if((*state->append_char)(state, rep[10] + 23)) /* XXX */ + return 1; + if((*state->append_char)(state, '0')) + return 1; + } + /* add sign */ + if(minusp){ + if((*state->append_char)(state, '-')) + return 1; + len++; + } else if(flags & plus_flag) { + if((*state->append_char)(state, '+')) + return 1; + len++; + } else if(flags & space_flag) { + if((*state->append_char)(state, ' ')) + return 1; + len++; + } + if(flags & minus_flag) + /* swap before padding with spaces */ + for(i = 0; i < len / 2; i++){ + char c = state->s[-i-1]; + state->s[-i-1] = state->s[-len+i]; + state->s[-len+i] = c; + } + width -= len; + while(width-- > 0){ + if((*state->append_char)(state, ' ')) + return 1; + len++; + } + if(!(flags & minus_flag)) + /* swap after padding with spaces */ + for(i = 0; i < len / 2; i++){ + char c = state->s[-i-1]; + state->s[-i-1] = state->s[-len+i]; + state->s[-len+i] = c; + } + + return 0; +} + +static int +append_string (struct state *state, + unsigned char *arg, + int width, + int prec, + int flags) +{ + if(prec != -1) + width -= prec; + else + width -= strlen((char *)arg); + if(!(flags & minus_flag)) + while(width-- > 0) + if((*state->append_char) (state, ' ')) + return 1; + if (prec != -1) { + while (*arg && prec--) + if ((*state->append_char) (state, *arg++)) + return 1; + } else { + while (*arg) + if ((*state->append_char) (state, *arg++)) + return 1; + } + if(flags & minus_flag) + while(width-- > 0) + if((*state->append_char) (state, ' ')) + return 1; + return 0; +} + +static int +append_char(struct state *state, + unsigned char arg, + int width, + int flags) +{ + while(!(flags & minus_flag) && --width > 0) + if((*state->append_char) (state, ' ')) + return 1; + + if((*state->append_char) (state, arg)) + return 1; + while((flags & minus_flag) && --width > 0) + if((*state->append_char) (state, ' ')) + return 1; + + return 0; +} + +/* + * This can't be made into a function... + */ + +#define PARSE_INT_FORMAT(res, arg, unsig) \ +if (long_flag) \ + res = (unsig long)va_arg(arg, unsig long); \ +else if (short_flag) \ + res = (unsig short)va_arg(arg, unsig int); \ +else \ + res = (unsig int)va_arg(arg, unsig int) + +/* + * zyxprintf - return 0 or -1 + */ + +static int +xyzprintf (struct state *state, const char *char_format, va_list ap) +{ + const unsigned char *format = (const unsigned char *)char_format; + unsigned char c; + + while((c = *format++)) { + if (c == '%') { + int flags = 0; + int width = 0; + int prec = -1; + int long_flag = 0; + int short_flag = 0; + + /* flags */ + while((c = *format++)){ + if(c == '-') + flags |= minus_flag; + else if(c == '+') + flags |= plus_flag; + else if(c == ' ') + flags |= space_flag; + else if(c == '#') + flags |= alternate_flag; + else if(c == '0') + flags |= zero_flag; + else + break; + } + + if((flags & space_flag) && (flags & plus_flag)) + flags ^= space_flag; + + if((flags & minus_flag) && (flags & zero_flag)) + flags ^= zero_flag; + + /* width */ + if (isdigit(c)) + do { + width = width * 10 + c - '0'; + c = *format++; + } while(isdigit(c)); + else if(c == '*') { + width = va_arg(ap, int); + c = *format++; + } + + /* precision */ + if (c == '.') { + prec = 0; + c = *format++; + if (isdigit(c)) + do { + prec = prec * 10 + c - '0'; + c = *format++; + } while(isdigit(c)); + else if (c == '*') { + prec = va_arg(ap, int); + c = *format++; + } + } + + /* size */ + + if (c == 'h') { + short_flag = 1; + c = *format++; + } else if (c == 'l') { + long_flag = 1; + c = *format++; + } + + switch (c) { + case 'c' : + if(append_char(state, va_arg(ap, int), width, flags)) + return -1; + break; + case 's' : + if (append_string(state, + va_arg(ap, unsigned char*), + width, + prec, + flags)) + return -1; + break; + case 'd' : + case 'i' : { + long arg; + unsigned long num; + int minusp = 0; + + PARSE_INT_FORMAT(arg, ap, signed); + + if (arg < 0) { + minusp = 1; + num = -arg; + } else + num = arg; + + if (append_number (state, num, 10, "0123456789", + width, prec, flags, minusp)) + return -1; + break; + } + case 'u' : { + unsigned long arg; + + PARSE_INT_FORMAT(arg, ap, unsigned); + + if (append_number (state, arg, 10, "0123456789", + width, prec, flags, 0)) + return -1; + break; + } + case 'o' : { + unsigned long arg; + + PARSE_INT_FORMAT(arg, ap, unsigned); + + if (append_number (state, arg, 010, "01234567", + width, prec, flags, 0)) + return -1; + break; + } + case 'x' : { + unsigned long arg; + + PARSE_INT_FORMAT(arg, ap, unsigned); + + if (append_number (state, arg, 0x10, "0123456789abcdef", + width, prec, flags, 0)) + return -1; + break; + } + case 'X' :{ + unsigned long arg; + + PARSE_INT_FORMAT(arg, ap, unsigned); + + if (append_number (state, arg, 0x10, "0123456789ABCDEF", + width, prec, flags, 0)) + return -1; + break; + } + case 'p' : { + unsigned long arg = (unsigned long)va_arg(ap, void*); + + if (append_number (state, arg, 0x10, "0123456789ABCDEF", + width, prec, flags, 0)) + return -1; + break; + } + case 'n' : { + int *arg = va_arg(ap, int*); + *arg = state->s - state->str; + break; + } + case '\0' : + --format; + /* FALLTHROUGH */ + case '%' : + if ((*state->append_char)(state, c)) + return -1; + break; + default : + if ( (*state->append_char)(state, '%') + || (*state->append_char)(state, c)) + return -1; + break; + } + } else + if ((*state->append_char) (state, c)) + return -1; + } + return 0; +} + +#ifndef HAVE_SNPRINTF +int +snprintf (char *str, size_t sz, const char *format, ...) +{ + va_list args; + int ret; + + va_start(args, format); + ret = vsnprintf (str, sz, format, args); + +#ifdef PARANOIA + { + int ret2; + char *tmp; + + tmp = malloc (sz); + if (tmp == NULL) + abort (); + + ret2 = vsprintf (tmp, format, args); + if (ret != ret2 || strcmp(str, tmp)) + abort (); + free (tmp); + } +#endif + + va_end(args); + return ret; +} +#endif + +#if 0 +#ifndef HAVE_ASPRINTF +int +asprintf (char **ret, const char *format, ...) +{ + va_list args; + int val; + + va_start(args, format); + val = vasprintf (ret, format, args); + +#ifdef PARANOIA + { + int ret2; + char *tmp; + tmp = malloc (val + 1); + if (tmp == NULL) + abort (); + + ret2 = vsprintf (tmp, format, args); + if (val != ret2 || strcmp(*ret, tmp)) + abort (); + free (tmp); + } +#endif + + va_end(args); + return val; +} +#endif + +#ifndef HAVE_ASNPRINTF +int +asnprintf (char **ret, size_t max_sz, const char *format, ...) +{ + va_list args; + int val; + + va_start(args, format); + val = vasnprintf (ret, max_sz, format, args); + +#ifdef PARANOIA + { + int ret2; + char *tmp; + tmp = malloc (val + 1); + if (tmp == NULL) + abort (); + + ret2 = vsprintf (tmp, format, args); + if (val != ret2 || strcmp(*ret, tmp)) + abort (); + free (tmp); + } +#endif + + va_end(args); + return val; +} +#endif + +#ifndef HAVE_VASPRINTF +int +vasprintf (char **ret, const char *format, va_list args) +{ + return vasnprintf (ret, 0, format, args); +} +#endif + + +#ifndef HAVE_VASNPRINTF +int +vasnprintf (char **ret, size_t max_sz, const char *format, va_list args) +{ + int st; + size_t len; + struct state state; + + state.max_sz = max_sz; + state.sz = 1; + state.str = malloc(state.sz); + if (state.str == NULL) { + *ret = NULL; + return -1; + } + state.s = state.str; + state.theend = state.s + state.sz - 1; + state.append_char = as_append_char; + state.reserve = as_reserve; + + st = xyzprintf (&state, format, args); + if (st) { + free (state.str); + *ret = NULL; + return -1; + } else { + char *tmp; + + *state.s = '\0'; + len = state.s - state.str; + tmp = realloc (state.str, len+1); + if (tmp == NULL) { + free (state.str); + *ret = NULL; + return -1; + } + *ret = tmp; + return len; + } +} +#endif +#endif + +#ifndef HAVE_VSNPRINTF +int +vsnprintf (char *str, size_t sz, const char *format, va_list args) +{ + struct state state; + int ret; + unsigned char *ustr = (unsigned char *)str; + + state.max_sz = 0; + state.sz = sz; + state.str = ustr; + state.s = ustr; + state.theend = ustr + sz - 1; + state.append_char = sn_append_char; + state.reserve = sn_reserve; + + ret = xyzprintf (&state, format, args); + *state.s = '\0'; + if (ret) + return sz; + else + return state.s - state.str; +} +#endif + diff --git a/mkdep b/mkdep new file mode 100755 index 0000000..b41a00e --- /dev/null +++ b/mkdep @@ -0,0 +1,109 @@ +#!/bin/sh - +# +# Copyright (c) 1994, 1996 +# The Regents of the University of California. All rights reserved. +# +# Redistribution and use in source and binary forms are permitted +# provided that this notice is preserved and that due credit is given +# to the University of California at Berkeley. The name of the University +# may not be used to endorse or promote products derived from this +# software without specific prior written permission. This software +# is provided ``as is'' without express or implied warranty. +# +# @(#)mkdep.sh 5.11 (Berkeley) 5/5/88 +# + +PATH=/bin:/usr/bin:/usr/ucb:/usr/local:/usr/local/bin:/usr/sfw/bin +export PATH + +MAKE=Makefile # default makefile name is "Makefile" +CC=cc # default C compiler is "cc" + +while : + do case "$1" in + # -c allows you to specify the C compiler + -c) + CC=$2 + shift; shift ;; + + # -f allows you to select a makefile name + -f) + MAKE=$2 + shift; shift ;; + + # the -p flag produces "program: program.c" style dependencies + # so .o's don't get produced + -p) + SED='s;\.o;;' + shift ;; + *) + break ;; + esac +done + +if [ $# = 0 ] ; then + echo 'usage: mkdep [-p] [-c cc] [-f makefile] [flags] file ...' + exit 1 +fi + +if [ ! -w $MAKE ]; then + echo "mkdep: no writeable file \"$MAKE\"" + exit 1 +fi + +TMP=/tmp/mkdep$$ + +trap 'rm -f $TMP ; exit 1' 1 2 3 13 15 + +cp $MAKE ${MAKE}.bak + +sed -e '/DO NOT DELETE THIS LINE/,$d' < $MAKE > $TMP + +cat << _EOF_ >> $TMP +# DO NOT DELETE THIS LINE -- mkdep uses it. +# DO NOT PUT ANYTHING AFTER THIS LINE, IT WILL GO AWAY. + +_EOF_ + +# If your compiler doesn't have -M, add it. If you can't, the next two +# lines will try and replace the "cc -M". The real problem is that this +# hack can't deal with anything that requires a search path, and doesn't +# even try for anything using bracket (<>) syntax. +# +# egrep '^#include[ ]*".*"' /dev/null $* | +# sed -e 's/:[^"]*"\([^"]*\)".*/: \1/' -e 's/\.c/.o/' | + +# XXX this doesn't work with things like "-DDECLWAITSTATUS=union\ wait" +$CC -M $* | +sed " + s; \./; ;g + $SED" | +awk '{ + if ($1 != prev) { + if (rec != "") + print rec; + rec = $0; + prev = $1; + } + else { + if (length(rec $2) > 78) { + print rec; + rec = $0; + } + else + rec = rec " " $2 + } +} +END { + print rec +}' >> $TMP + +cat << _EOF_ >> $TMP + +# IF YOU PUT ANYTHING HERE IT WILL GO AWAY +_EOF_ + +# copy to preserve permissions +cp $TMP $MAKE +rm -f ${MAKE}.bak $TMP +exit 0 diff --git a/msdos/bin2c.c b/msdos/bin2c.c new file mode 100644 index 0000000..d82056e --- /dev/null +++ b/msdos/bin2c.c @@ -0,0 +1,43 @@ +#include +#include +#include +#include + +static void Abort (char *fmt,...) +{ + va_list args; + va_start (args, fmt); + vfprintf (stderr, fmt, args); + va_end (args); + exit (1); +} + +int main (int argc, char **argv) +{ + FILE *inFile; + FILE *outFile = stdout; + time_t now = time (NULL); + int ch, i; + + if (argc != 2) + Abort ("Usage: %s bin-file [> result]", argv[0]); + + if ((inFile = fopen(argv[1],"rb")) == NULL) + Abort ("Cannot open %s\n", argv[1]); + + fprintf (outFile, + "/* data statements for file %s at %.24s */\n" + "/* Generated by BIN2C, G.Vanem 1995 */\n", + argv[1], ctime(&now)); + + i = 0; + while ((ch = fgetc(inFile)) != EOF) + { + if (i++ % 12 == 0) + fputs ("\n ", outFile); + fprintf (outFile, "0x%02X,", ch); + } + fputc ('\n', outFile); + fclose (inFile); + return (0); +} diff --git a/msdos/common.dj b/msdos/common.dj new file mode 100644 index 0000000..3f64d14 --- /dev/null +++ b/msdos/common.dj @@ -0,0 +1,80 @@ +# +# Common defines for libpcap and 16/32-bit network drivers (djgpp) +# +# @(#) $Header: /tcpdump/master/libpcap/msdos/common.dj,v 1.2 2004-12-19 19:36:33 guy Exp $ (LBL) + +.SUFFIXES: .exe .wlm .dxe .l .y +.PHONY: check_gcclib + +default: check_gcclib all + +GCCLIB = /djgpp/lib/gcc-lib/djgpp/3.31 +MAKEFILE = Makefile.dj + +# +# DLX 2.91+ lib. Change path to suite. +# Not used anymore. Uses DXE3 now. +# +# DLX_LIB = $(DJDIR)/contrib/dlx.291/libdlx.a +# DLX_LINK = $(DJDIR)/bin/dlxgen.exe + +WATT32_ROOT = $(subst \,/,$(WATT_ROOT)) + + +ifeq ($(wildcard $(GCCLIB)/libgcc.a),) +check_gcclib: + @echo libgcc.a not found. Set \"$(GCCLIB)\" to \"/djgpp/lib/gcc-lib/djgpp/3.X\" +endif + + +# +# Include 32-bit driver support +# +USE_32BIT_DRIVERS = 0 + +# +# Use loadable driver modules instead of statically linking +# all drivers. +# +USE_32BIT_MODULES = 0 + +# +# Put interrupt sensitive code/data in locked sections +# Do `make clean' in all affected directories after changing this. +# +USE_SECTION_LOCKING = 0 + +# +# Set to 1 to use exception handler lib (only for me) +# +USE_EXCEPT = 0 + +CC = gcc.exe +LD = ld.exe +ASM = nasm.exe -fbin -dDEBUG +YACC = bison.exe +LEX = flex.exe + +CFLAGS = -g -gcoff -O2 -Wall -I. -I$(WATT32_ROOT)/inc + +ifeq ($(USE_EXCEPT),1) + CFLAGS += -DUSE_EXCEPT + EXC_LIB = d:/prog/mw/except/lib/libexc.a +endif + +ifeq ($(USE_SECTION_LOCKING),1) + CFLAGS += -DUSE_SECTION_LOCKING +endif + +ifeq ($(USE_32BIT_DRIVERS),1) + CFLAGS += -DUSE_32BIT_DRIVERS +endif + +%.o: %.c + $(CC) -c $(CFLAGS) $< + @echo + +%.o: %.s + $(CC) -c $(CFLAGS) -x assembler-with-cpp -o $@ $< + @echo + diff --git a/msdos/makefile b/msdos/makefile new file mode 100644 index 0000000..cdb4e7c --- /dev/null +++ b/msdos/makefile @@ -0,0 +1,184 @@ +# +# Makefile for dos-libpcap. NB. This makefile requires a Borland +# compatible make tool. +# +# Targets: +# Borland C 4.0+ (DOS large model) +# Metaware HighC 3.3+ (PharLap 386|DosX) +# + +.AUTODEPEND +.SWAP + +!if "$(WATT_ROOT)" == "" +!error Environment variable "WATT_ROOT" not set. +!endif + +WATT_INC = $(WATT_ROOT)\inc + +DEFS = -DMSDOS -DDEBUG -DNDIS_DEBUG -D_U_= -Dinline= \ + -DHAVE_STRERROR -DHAVE_LIMITS_H + +ASM = tasm.exe -t -l -mx -m2 -DDEBUG + +SOURCE = grammar.c scanner.c bpf_filt.c bpf_imag.c bpf_dump.c \ + etherent.c gencode.c nametoad.c pcap-dos.c optimize.c \ + savefile.c pcap.c inet.c msdos\ndis2.c msdos\pktdrvr.c \ + missing\snprintf.c + +BORLAND_OBJ = $(SOURCE:.c=.obj) msdos\pkt_rx0.obj msdos\ndis_0.obj + +HIGHC_OBJ = $(SOURCE:.c=.o32) msdos\pkt_rx0.o32 + +all: + @echo Usage: make pcap_bc.lib or pcap_hc.lib + + +pcap_bc.lib: bcc.arg $(BORLAND_OBJ) pcap_bc + + +pcap_hc.lib: hc386.arg $(HIGHC_OBJ) + 386lib $< @&&| + -nowarn -nobackup -twocase -replace $(HIGHC_OBJ) +| + +pcap_bc: $(BORLAND_OBJ) + @tlib pcap_bc.lib /C @&&| + -+$(**:.obj=-+) +| + +.c.obj: + bcc.exe @bcc.arg -o$*.obj $*.c + +.c.o32: + hc386.exe @hc386.arg -o $*.o32 $*.c + +.asm.obj: + $(ASM) $*.asm, $*.obj + +.asm.o32: + $(ASM) -DDOSX=1 $*.asm, $*.o32 + +scanner.c: scanner.l + flex -Ppcap_ -7 -oscanner.c scanner.l + +grammar.c tokdefs.h: grammar.y + bison --name-prefix=pcap_ --yacc --defines grammar.y + - @del grammar.c + - @del tokdefs.h + ren y_tab.c grammar.c + ren y_tab.h tokdefs.h + +bcc.arg: msdos\Makefile + @copy &&| + $(DEFS) -ml -c -v -3 -O2 -po -RT- -w- + -I$(WATT_INC) -I. -I.\msdos\pm_drvr -H=$(TEMP)\bcc.sym +| $< + +hc386.arg: msdos\Makefile + @copy &&| + # -DUSE_32BIT_DRIVERS + $(DEFS) -DDOSX=1 -w3 -c -g -O5 + -I$(WATT_INC) -I. -I.\msdos\pm_drvr + -Hsuffix=.o32 + -Hnocopyr + -Hpragma=Offwarn(491,553,572) + -Hon=Recognize_library # make memcpy/strlen etc. inline + -Hoff=Behaved # turn off some optimiser warnings +| $< + +clean: + @del *.obj + @del *.o32 + @del *.lst + @del *.map + @del bcc.arg + @del hc386.arg + @del grammar.c + @del tokdefs.h + @del scanner.c + @echo Cleaned + +# +# dependencies +# +pkt_rx0.obj: msdos\pkt_rx0.asm + +bpf_filt.obj: bpf_filt.c pcap-int.h pcap.h pcap-bpf.h gnuc.h + +bpf_imag.obj: bpf_imag.c pcap-int.h pcap.h pcap-bpf.h + +bpf_dump.obj: bpf_dump.c pcap.h pcap-bpf.h + +etherent.obj: etherent.c pcap-int.h pcap.h pcap-bpf.h pcap-namedb.h + +optimize.obj: optimize.c pcap-int.h pcap.h pcap-bpf.h gencode.h + +savefile.obj: savefile.c pcap-int.h pcap.h pcap-bpf.h + +pcap.obj: pcap.c pcap-dos.h pcap-int.h pcap.h pcap-bpf.h + +inet.obj: inet.c pcap-int.h pcap.h pcap-bpf.h + +grammar.obj: grammar.c pcap-int.h pcap.h pcap-bpf.h gencode.h \ + pf.h pcap-namedb.h + +scanner.obj: scanner.c pcap-int.h pcap.h pcap-bpf.h gencode.h \ + pcap-namedb.h tokdefs.h + +gencode.obj: gencode.c pcap-dos.h pcap-int.h pcap.h pcap-bpf.h \ + ethertype.h nlpid.h llc.h gencode.h atmuni31.h sunatmpos.h ppp.h sll.h \ + arcnet.h pf.h pcap-namedb.h + +nametoad.obj: nametoad.c pcap-int.h pcap.h pcap-bpf.h gencode.h \ + pcap-namedb.h ethertype.h + +pcap-dos.obj: pcap-dos.c pcap.h pcap-bpf.h pcap-dos.h pcap-int.h \ + msdos\pktdrvr.h + +pktdrvr.obj: msdos\pktdrvr.c gnuc.h pcap-dos.h pcap-int.h \ + pcap.h pcap-bpf.h msdos\pktdrvr.h msdos\pkt_stub.inc + +ndis2.obj: msdos\ndis2.c pcap-dos.h pcap-int.h pcap.h pcap-bpf.h \ + msdos\ndis2.h + +pkt_rx0.o32: msdos\pkt_rx0.asm + +bpf_filt.o32: bpf_filt.c pcap-int.h pcap.h pcap-bpf.h gnuc.h + +bpf_imag.o32: bpf_imag.c pcap-int.h pcap.h pcap-bpf.h + +bpf_dump.o32: bpf_dump.c pcap.h pcap-bpf.h + +etherent.o32: etherent.c pcap-int.h pcap.h pcap-bpf.h pcap-namedb.h + +optimize.o32: optimize.c pcap-int.h pcap.h pcap-bpf.h gencode.h + +savefile.o32: savefile.c pcap-int.h pcap.h pcap-bpf.h + +pcap.o32: pcap.c pcap-dos.h pcap-int.h pcap.h pcap-bpf.h + +inet.o32: inet.c pcap-int.h pcap.h pcap-bpf.h + +grammar.o32: grammar.c pcap-int.h pcap.h pcap-bpf.h gencode.h \ + pf.h pcap-namedb.h + +scanner.o32: scanner.c pcap-int.h pcap.h pcap-bpf.h gencode.h \ + pcap-namedb.h tokdefs.h + +gencode.o32: gencode.c pcap-dos.h pcap-int.h pcap.h pcap-bpf.h \ + ethertype.h nlpid.h llc.h gencode.h atmuni31.h sunatmpos.h ppp.h sll.h \ + arcnet.h pf.h pcap-namedb.h + +nametoad.o32: nametoad.c pcap-int.h pcap.h pcap-bpf.h gencode.h \ + pcap-namedb.h ethertype.h + +pcap-dos.o32: pcap-dos.c pcap.h pcap-bpf.h pcap-dos.h pcap-int.h \ + msdos\pktdrvr.h + +pktdrvr.o32: msdos\pktdrvr.c gnuc.h pcap-dos.h pcap-int.h \ + pcap.h pcap-bpf.h msdos\pktdrvr.h msdos\pkt_stub.inc + +ndis2.o32: msdos\ndis2.c pcap-dos.h pcap-int.h pcap.h pcap-bpf.h \ + msdos\ndis2.h + diff --git a/msdos/makefile.dj b/msdos/makefile.dj new file mode 100644 index 0000000..7ce58b4 --- /dev/null +++ b/msdos/makefile.dj @@ -0,0 +1,152 @@ +# +# GNU Makefile for DOS-libpcap. djgpp version. +# +# Use this makefile from the libpcap root directory. +# E.g. like this: +# +# c:\net\pcap> make -f msdos/makefile.dj +# +# @(#) $Header: /tcpdump/master/libpcap/msdos/makefile.dj,v 1.2 2004-12-19 19:41:06 guy Exp $ (LBL) + +VPATH = missing msdos + +PREREQUISITES = scanner.c grammar.c tokdefs.h version.h msdos/pkt_stub.inc + +include msdos/common.dj + +DRIVER_DIR = ./msdos/pm_drvr + +CFLAGS += -DDEBUG -DNDIS_DEBUG -DHAVE_LIMITS_H -DHAVE_STRERROR \ + -D_U_='__attribute__((unused))' -DHAVE_VERSION_H + +# CFLAGS += -Dyylval=pcap_lval -DBDEBUG -DNDEBUG + +SOURCES = grammar.c scanner.c bpf_filt.c bpf_imag.c bpf_dump.c \ + etherent.c gencode.c nametoad.c pcap-dos.c optimize.c \ + savefile.c pcap.c inet.c msdos\pktdrvr.c msdos/ndis2.c \ + missing/snprintf.c + +OBJECTS = $(notdir $(SOURCES:.c=.o)) +TEMPBIN = tmp.bin + +ifeq ($(USE_32BIT_DRIVERS),1) + PM_OBJECTS = $(addprefix $(DRIVER_DIR)/, \ + printk.o pci.o pci-scan.o bios32.o dma.o irq.o intwrap.o \ + lock.o kmalloc.o quirks.o timer.o net_init.o) + # + # Static link of drivers + # + ifeq ($(USE_32BIT_MODULES),0) + PM_OBJECTS += $(addprefix $(DRIVER_DIR)/, \ + accton.o 8390.o 3c503.o 3c509.o 3c59x.o 3c515.o \ + 3c575_cb.o 3c90x.o ne.o wd.o cs89x0.o rtl8139.o) + endif +endif + +all: libpcap.a + +ifeq ($(USE_32BIT_DRIVERS),1) +$(PM_OBJECTS): + $(MAKE) -f Makefile.dj -C $(DRIVER_DIR) $(notdir $@) +endif + +libpcap.a: version.h $(OBJECTS) $(PM_OBJECTS) + rm -f $@ + ar rs $@ $^ + +msdos/pkt_stub.inc: msdos/bin2c.exe msdos/pkt_rx1.S + $(ASM) -o $(TEMPBIN) -lmsdos/pkt_rx1.lst msdos/pkt_rx1.S + ./msdos/bin2c $(TEMPBIN) > $@ + rm -f $(TEMPBIN) + +grammar.c tokdefs.h: grammar.y + rm -f grammar.c tokdefs.h + $(YACC) --name-prefix=pcap_ --yacc --defines grammar.y + mv -f y_tab.c grammar.c + mv -f y_tab.h tokdefs.h + +version.h: ./VERSION + @echo '/* Generated from VERSION. Do not edit */' > $@ + sed -e 's/.*/static char pcap_version_string[] = "libpcap (&)";/' ./VERSION >> $@ + +scanner.c: scanner.l + $(LEX) -Ppcap_ -7 -t $^ > $@ + @echo + +msdos/bin2c.exe: msdos/bin2c.c + $(CC) $*.c -o $*.exe + +clean: + $(MAKE) -f Makefile.dj -C $(DRIVER_DIR) clean + $(MAKE) -f Makefile.dj -C libcpcap clean + rm -f $(OBJECTS) msdos/pkt_rx1.lst Makefile.bak $(PREREQUISITES) + +vclean: clean + rm -f libpcap.a msdos/bin2c.exe + +# +# Generated dependencies; Due to some hacks in gcc 2.95 and djgpp 2.03 +# we must prevent "$(DJDIR)/bin/../include/sys/version.h" from beeing +# included in dependency output (or else this makefile cannot be used on +# another machine). We therefore use a special 'specs' file during +# pre-processing. +# +MM_SPECS = specs.tmp +MAKEFILE = msdos/Makefile.dj + +depend: $(PREREQUISITES) + @echo Generating dependencies.. + @cp $(MAKEFILE) Makefile.bak + @echo "*cpp: %(cpp_cpu) %{posix:-D_POSIX_SOURCE} -remap" > $(MM_SPECS) + sed -e "/^# DO NOT DELETE THIS LINE/,$$d" < Makefile.bak > $(MAKEFILE) + echo "# DO NOT DELETE THIS LINE" >> $(MAKEFILE) + $(CC) -MM -specs=$(MM_SPECS) $(CFLAGS) $(SOURCES) >> $(MAKEFILE) + rm -f $(MM_SPECS) + +# +# Manually generated dependencies +# +msdos/pktdrvr.c: msdos/pkt_stub.inc +scanner.c: scanner.l +grammar.c tokdefs.h: grammar.y +grammar.h: grammar.y +scanner.l: pcap-int.h pcap-namedb.h gencode.h grammar.h gnuc.h +grammar.y: pcap-int.h gencode.h pcap-namedb.h gnuc.h + +# +# Automatically generated dependencies +# +# DO NOT DELETE THIS LINE +grammar.o: grammar.c pcap-int.h pcap.h pcap-bpf.h gencode.h pf.h \ + pcap-namedb.h +scanner.o: scanner.c pcap-int.h pcap.h pcap-bpf.h gencode.h pcap-namedb.h \ + tokdefs.h +bpf_filt.o: bpf_filt.c pcap-int.h pcap.h pcap-bpf.h gnuc.h +bpf_imag.o: bpf_imag.c pcap-int.h pcap.h pcap-bpf.h +bpf_dump.o: bpf_dump.c pcap.h pcap-bpf.h +etherent.o: etherent.c pcap-int.h pcap.h pcap-bpf.h pcap-namedb.h +gencode.o: gencode.c pcap-dos.h msdos/pm_drvr/lock.h pcap-int.h pcap.h \ + pcap-bpf.h ethertype.h nlpid.h llc.h gencode.h atmuni31.h sunatmpos.h \ + ppp.h sll.h arcnet.h pf.h pcap-namedb.h +nametoad.o: nametoad.c pcap-int.h pcap.h pcap-bpf.h gencode.h \ + pcap-namedb.h ethertype.h +pcap-dos.o: pcap-dos.c msdos/pm_drvr/pmdrvr.h msdos/pm_drvr/iface.h \ + msdos/pm_drvr/lock.h msdos/pm_drvr/ioport.h pcap-dos.h pcap-int.h \ + pcap.h pcap-bpf.h msdos/pm_drvr/kmalloc.h msdos/pm_drvr/bitops.h \ + msdos/pm_drvr/timer.h msdos/pm_drvr/dma.h msdos/pm_drvr/irq.h \ + msdos/pm_drvr/printk.h msdos/pm_drvr/pci.h msdos/pm_drvr/bios32.h \ + msdos/pm_drvr/module.h msdos/pm_drvr/3c501.h msdos/pm_drvr/3c503.h \ + msdos/pm_drvr/3c509.h msdos/pm_drvr/3c59x.h msdos/pm_drvr/3c515.h \ + msdos/pm_drvr/3c90x.h msdos/pm_drvr/3c575_cb.h msdos/pm_drvr/ne.h \ + msdos/pm_drvr/wd.h msdos/pm_drvr/accton.h msdos/pm_drvr/cs89x0.h \ + msdos/pm_drvr/rtl8139.h msdos/pm_drvr/ne2k-pci.h msdos/pktdrvr.h +optimize.o: optimize.c pcap-int.h pcap.h pcap-bpf.h gencode.h +savefile.o: savefile.c pcap-int.h pcap.h pcap-bpf.h +pcap.o: pcap.c pcap-dos.h msdos/pm_drvr/lock.h pcap-int.h pcap.h \ + pcap-bpf.h +inet.o: inet.c pcap-int.h pcap.h pcap-bpf.h +pktdrvr.o: msdos/pktdrvr.c gnuc.h pcap-dos.h msdos/pm_drvr/lock.h \ + pcap-int.h pcap.h pcap-bpf.h msdos/pktdrvr.h msdos/pkt_stub.inc +ndis2.o: msdos/ndis2.c pcap-dos.h msdos/pm_drvr/lock.h pcap-int.h pcap.h \ + pcap-bpf.h msdos/ndis2.h +snprintf.o: missing/snprintf.c pcap-int.h pcap.h pcap-bpf.h diff --git a/msdos/makefile.wc b/msdos/makefile.wc new file mode 100644 index 0000000..e0d5672 --- /dev/null +++ b/msdos/makefile.wc @@ -0,0 +1,131 @@ +# +# Watcom Makefile for dos-libpcap. +# +# Specify MODEL = `3r' or `3s' +# Specify TARGET = `pharlap' or `dos4g' +# +# Use this makefile from the libpcap root directory. +# E.g. like this: +# +# c:\net\pcap> wmake -f msdos\makefile.wc +# + +MODEL = 3s +TARGET = dos4g + +OBJDIR = msdos\$(TARGET).w$(MODEL) +LIB = $(OBJDIR)\pcap.lib + +.EXTENSIONS: .l .y + +DEFS = -dDEBUG -dNDIS_DEBUG -d_U_= -dHAVE_LIMITS_H -dHAVE_STRERROR & + -dHAVE_SNPRINTF -dHAVE_VSNPRINTF + +CC = wcc386.exe +ASM = wasm.exe -$(MODEL) $(DEFS) -dDOSX -dDOS4GW -zq -bt=dos -fr=nul -d3 -s + +OBJS = $(OBJDIR)\grammar.obj $(OBJDIR)\scanner.obj $(OBJDIR)\pcap.obj & + $(OBJDIR)\bpf_filt.obj $(OBJDIR)\bpf_imag.obj $(OBJDIR)\bpf_dump.obj & + $(OBJDIR)\etherent.obj $(OBJDIR)\gencode.obj $(OBJDIR)\nametoad.obj & + $(OBJDIR)\pcap-dos.obj $(OBJDIR)\pktdrvr.obj $(OBJDIR)\optimize.obj & + $(OBJDIR)\savefile.obj $(OBJDIR)\inet.obj $(OBJDIR)\ndis2.obj + +CFLAGS = $(DEFS) $(YYDEFS) -I. -I$(%watt_root)\inc -I.\msdos\pm_drvr & + -$(MODEL) -mf -zff -zgf -zq -bt=dos -fr=nul -w6 -fpi & + -oilrtf -zm + +TEMPBIN = tmp.bin + +all: $(OBJDIR) $(OBJDIR)\pcap.lib + +$(OBJDIR): + - mkdir $(OBJDIR) + +$(OBJDIR)\pcap.lib: $(OBJS) wlib.arg + wlib -q -b -c $(OBJDIR)\pcap.lib @wlib.arg + +wlib.arg: msdos\makefile.wc + %create $^@ + for %f in ($(OBJS)) do %append $^@ +- %f + +$(OBJDIR)\pktdrvr.obj: msdos\pkt_stub.inc msdos\pktdrvr.c gnuc.h & + pcap-dos.h pcap-int.h pcap.h msdos\pktdrvr.h + *$(CC) $(CFLAGS) msdos\pktdrvr.c -fo=$@ + +$(OBJDIR)\ndis2.obj: msdos\ndis2.c + *$(CC) $(CFLAGS) msdos\ndis2.c -fo=$@ + +.ERASE +.c{$(OBJDIR)}.obj: + *$(CC) $(CFLAGS) $[@ -fo=$@ + +grammar.c tokdefs.h: grammar.y + bison --name-prefix=pcap_ --yacc --defines $[@ + - @del grammar.c + - @del tokdefs.h + ren y_tab.c grammar.c + ren y_tab.h tokdefs.h + +scanner.c: scanner.l + flex -Ppcap_ -7 -o$@ $[@ + +msdos\pkt_stub.inc: bin2c.exe msdos\pkt_rx1.S + nasm -fbin -dDEBUG -o $(TEMPBIN) -lmsdos\pkt_rx1.lst msdos\pkt_rx1.S + bin2c.exe $(TEMPBIN) > $@ + @del $(TEMPBIN) + +bin2c.exe: msdos\bin2c.c + wcl $[@ + +clean realclean vclean: .SYMBOLIC + for %f in (dos4g.w3r dos4g.w3s pharlap.w3r pharlap.w3s) do & + @del %f\*.obj + @del grammar.c + @del tokdefs.h + @del scanner.c + @del bin2c.exe + @del bin2c.obj + @del msdos\pkt_stub.inc + @echo Cleaned + +# +# dependencies +# +$(OBJDIR)\bpf_filt.obj: bpf_filt.c pcap-int.h pcap.h pcap-bpf.h gnuc.h + +$(OBJDIR)\bpf_imag.obj: bpf_imag.c pcap-int.h pcap.h pcap-bpf.h + +$(OBJDIR)\bpf_dump.obj: bpf_dump.c pcap.h pcap-bpf.h + +$(OBJDIR)\etherent.obj: etherent.c pcap-int.h pcap.h pcap-bpf.h pcap-nam.h + +$(OBJDIR)\optimize.obj: optimize.c pcap-int.h pcap.h pcap-bpf.h gencode.h + +$(OBJDIR)\savefile.obj: savefile.c pcap-int.h pcap.h pcap-bpf.h + +$(OBJDIR)\pcap.obj: pcap.c pcap-dos.h pcap-int.h pcap.h pcap-bpf.h + +$(OBJDIR)\inet.obj: inet.c pcap-int.h pcap.h pcap-bpf.h + +$(OBJDIR)\grammar.obj: grammar.c pcap-int.h pcap.h pcap-bpf.h gencode.h & + pf.h pcap-nam.h + +$(OBJDIR)\scanner.obj: scanner.c pcap-int.h pcap.h pcap-bpf.h gencode.h & + pcap-nam.h tokdefs.h + +$(OBJDIR)\gencode.obj: gencode.c pcap-dos.h pcap-int.h pcap.h pcap-bpf.h & + ethertyp.h nlpid.h llc.h gencode.h atmuni31.h sunatmpo.h ppp.h sll.h & + arcnet.h pf.h pcap-nam.h + +$(OBJDIR)\nametoad.obj: nametoad.c pcap-int.h pcap.h pcap-bpf.h gencode.h & + pcap-nam.h ethertyp.h + +$(OBJDIR)\pcap-dos.obj: pcap-dos.c pcap.h pcap-bpf.h pcap-dos.h pcap-int.h & + msdos\pktdrvr.h + +$(OBJDIR)\pktdrvr.obj: msdos\pktdrvr.c gnuc.h pcap-dos.h pcap-int.h & + pcap.h pcap-bpf.h msdos\pktdrvr.h msdos\pkt_stub.inc + +$(OBJDIR)\ndis2.obj: msdos\ndis2.c pcap-dos.h pcap-int.h pcap.h pcap-bpf.h & + msdos\ndis2.h + diff --git a/msdos/ndis2.c b/msdos/ndis2.c new file mode 100644 index 0000000..0a5ea2a --- /dev/null +++ b/msdos/ndis2.c @@ -0,0 +1,860 @@ +/* + * Copyright (c) 1993,1994 + * Texas A&M University. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Texas A&M University + * and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * Developers: + * David K. Hess, Douglas Lee Schales, David R. Safford + * + * Heavily modified for Metaware HighC + GNU C 2.8+ + * Gisle Vanem 1998 + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "pcap-dos.h" +#include "pcap-int.h" +#include "msdos/ndis2.h" + +#if defined(USE_NDIS2) + +/* + * Packet buffer handling + */ +extern int FreePktBuf (PktBuf *buf); +extern int EnquePktBuf (PktBuf *buf); +extern PktBuf* AllocPktBuf (void); + +/* + * Various defines + */ +#define MAX_NUM_DEBUG_STRINGS 90 +#define DEBUG_STRING_LENGTH 80 +#define STACK_POOL_SIZE 6 +#define STACK_SIZE 256 + +#define MEDIA_FDDI 1 +#define MEDIA_ETHERNET 2 +#define MEDIA_TOKEN 3 + +static int startDebug = 0; +static int stopDebug = 0; + +static DWORD droppedPackets = 0L; +static WORD frameSize = 0; +static WORD headerSize = 0; +static int mediaType = 0; +static char *lastErr = NULL; + +static BYTE debugStrings [MAX_NUM_DEBUG_STRINGS][DEBUG_STRING_LENGTH]; +static BYTE *freeStacks [STACK_POOL_SIZE]; +static int freeStackPtr = STACK_POOL_SIZE - 1; + +static ProtMan protManEntry = NULL; +static WORD protManDS = 0; +static volatile int xmitPending; + +static struct _PktBuf *txBufPending; +static struct _CardHandle *handle; +static struct _CommonChars common; +static struct _ProtocolChars protChars; +static struct _ProtDispatch lowerTable; + +static struct _FailingModules failingModules; +static struct _BindingsList bindings; + +static struct { + WORD err_num; + char *err_text; + } ndis_errlist[] = { + + { ERR_SUCCESS, + "The function completed successfully.\n" }, + + { ERR_WAIT_FOR_RELEASE, + "The ReceiveChain completed successfully but the protocol has\n" + "retained control of the buffer.\n" }, + + { ERR_REQUEST_QUEUED, + "The current request has been queued.\n" }, + + { ERR_FRAME_NOT_RECOGNIZED, + "Frame not recognized.\n" }, + + { ERR_FRAME_REJECTED, + "Frame was discarded.\n" }, + + { ERR_FORWARD_FRAME, + "Protocol wishes to forward frame to another protocol.\n" }, + + { ERR_OUT_OF_RESOURCE, + "Out of resource.\n" }, + + { ERR_INVALID_PARAMETER, + "Invalid parameter.\n" }, + + { ERR_INVALID_FUNCTION, + "Invalid function.\n" }, + + { ERR_NOT_SUPPORTED, + "Not supported.\n" }, + + { ERR_HARDWARE_ERROR, + "Hardware error.\n" }, + + { ERR_TRANSMIT_ERROR, + "The packet was not transmitted due to an error.\n" }, + + { ERR_NO_SUCH_DESTINATION, + "Token ring packet was not recognized when transmitted.\n" }, + + { ERR_BUFFER_TOO_SMALL, + "Provided buffer was too small.\n" }, + + { ERR_ALREADY_STARTED, + "Network drivers already started.\n" }, + + { ERR_INCOMPLETE_BINDING, + "Protocol driver could not complete its bindings.\n" }, + + { ERR_DRIVER_NOT_INITIALIZED, + "MAC did not initialize properly.\n" }, + + { ERR_HARDWARE_NOT_FOUND, + "Hardware not found.\n" }, + + { ERR_HARDWARE_FAILURE, + "Hardware failure.\n" }, + + { ERR_CONFIGURATION_FAILURE, + "Configuration failure.\n" }, + + { ERR_INTERRUPT_CONFLICT, + "Interrupt conflict.\n" }, + + { ERR_INCOMPATIBLE_MAC, + "The MAC is not compatible with the protocol.\n" }, + + { ERR_INITIALIZATION_FAILED, + "Initialization failed.\n" }, + + { ERR_NO_BINDING, + "Binding did not occur.\n" }, + + { ERR_NETWORK_MAY_NOT_BE_CONNECTED, + "The network may not be connected to the adapter.\n" }, + + { ERR_INCOMPATIBLE_OS_VERSION, + "The version of the operating system is incompatible with the protocol.\n" }, + + { ERR_ALREADY_REGISTERED, + "The protocol is already registered.\n" }, + + { ERR_PATH_NOT_FOUND, + "PROTMAN.EXE could not be found.\n" }, + + { ERR_INSUFFICIENT_MEMORY, + "Insufficient memory.\n" }, + + { ERR_INFO_NOT_FOUND, + "Protocol Mananger info structure is lost or corrupted.\n" }, + + { ERR_GENERAL_FAILURE, + "General failure.\n" } +}; + +/* + * Some handy macros + */ +#define PERROR(str) printf("%s (%d): %s\n", __FILE__,__LINE__,str) +#define DEBUG_RING() (debugStrings[stopDebug+1 == MAX_NUM_DEBUG_STRINGS ? \ + stopDebug = 0 : ++stopDebug]) + +/* + * needs rewrite for DOSX + */ +#define MAC_DISPATCH(hnd) ((struct _MacUpperDispatch*)(hnd)->common->upperDispatchTable) +#define MAC_STATUS(hnd) ((struct _MacStatusTable*) (hnd)->common->serviceStatus) +#define MAC_CHAR(hnd) ((struct _MacChars*) (hnd)->common->serviceChars) + +#ifdef NDIS_DEBUG + #define DEBUG0(str) printf (str) + #define DEBUG1(fmt,a) printf (fmt,a) + #define DEBUG2(fmt,a,b) printf (fmt,a,b) + #define TRACE0(str) sprintf (DEBUG_RING(),str) + #define TRACE1(fmt,a) sprintf (DEBUG_RING(),fmt,a) +#else + #define DEBUG0(str) ((void)0) + #define DEBUG1(fmt,a) ((void)0) + #define DEBUG2(fmt,a,b) ((void)0) + #define TRACE0(str) ((void)0) + #define TRACE1(fmt,a) ((void)0) +#endif + +/* + * This routine is called from both threads + */ +void NdisFreeStack (BYTE *aStack) +{ + GUARD(); + + if (freeStackPtr == STACK_POOL_SIZE - 1) + PERROR ("tried to free too many stacks"); + + freeStacks[++freeStackPtr] = aStack; + + if (freeStackPtr == 0) + TRACE0 ("freeStackPtr went positive\n"); + + UNGUARD(); +} + +/* + * This routine is called from callbacks to allocate local data + */ +BYTE *NdisAllocStack (void) +{ + BYTE *stack; + + GUARD(); + + if (freeStackPtr < 0) + { + /* Ran out of stack buffers. Return NULL which will start + * dropping packets + */ + TRACE0 ("freeStackPtr went negative\n"); + stack = 0; + } + else + stack = freeStacks[freeStackPtr--]; + + UNGUARD(); + return (stack); +} + +CALLBACK (NdisSystemRequest (DWORD param1, DWORD param2, WORD param3, + WORD opcode, WORD targetDS)) +{ + static int bindEntry = 0; + struct _CommonChars *macCommon; + volatile WORD result; + + switch (opcode) + { + case REQ_INITIATE_BIND: + macCommon = (struct _CommonChars*) param2; + if (macCommon == NULL) + { + printf ("There is an NDIS misconfiguration.\n"); + result = ERR_GENERAL_FAILURE; + break; + } + DEBUG2 ("module name %s\n" + "module type %s\n", + macCommon->moduleName, + ((MacChars*) macCommon->serviceChars)->macName); + + /* Binding to the MAC */ + result = macCommon->systemRequest ((DWORD)&common, (DWORD)&macCommon, + 0, REQ_BIND, + macCommon->moduleDS); + + if (!strcmp(bindings.moduleName[bindEntry], handle->moduleName)) + handle->common = macCommon; + else PERROR ("unknown module"); + ++bindEntry; + break; + + case REQ_INITIATE_UNBIND: + macCommon = (struct _CommonChars*) param2; + result = macCommon->systemRequest ((DWORD)&common, 0, + 0, REQ_UNBIND, + macCommon->moduleDS); + break; + + default: + result = ERR_GENERAL_FAILURE; + break; + } + ARGSUSED (param1); + ARGSUSED (param3); + ARGSUSED (targetDS); + return (result); +} + +CALLBACK (NdisRequestConfirm (WORD protId, WORD macId, WORD reqHandle, + WORD status, WORD request, WORD protDS)) +{ + ARGSUSED (protId); ARGSUSED (macId); + ARGSUSED (reqHandle); ARGSUSED (status); + ARGSUSED (request); ARGSUSED (protDS); + return (ERR_SUCCESS); +} + +CALLBACK (NdisTransmitConfirm (WORD protId, WORD macId, WORD reqHandle, + WORD status, WORD protDS)) +{ + xmitPending--; + FreePktBuf (txBufPending); /* Add passed ECB back to the free list */ + + ARGSUSED (reqHandle); + ARGSUSED (status); + ARGSUSED (protDS); + return (ERR_SUCCESS); +} + + +/* + * The primary function for receiving packets + */ +CALLBACK (NdisReceiveLookahead (WORD macId, WORD frameSize, + WORD bytesAvail, BYTE *buffer, + BYTE *indicate, WORD protDS)) +{ + int result; + PktBuf *pktBuf; + WORD bytesCopied; + struct _TDBufDescr tDBufDescr; + +#if 0 + TRACE1 ("lookahead length = %d, ", bytesAvail); + TRACE1 ("ecb = %08lX, ", *ecb); + TRACE1 ("count = %08lX\n", count); + TRACE1 ("offset = %08lX, ", offset); + TRACE1 ("timesAllowed = %d, ", timesAllowed); + TRACE1 ("packet size = %d\n", look->dataLookAheadLen); +#endif + + /* Allocate a buffer for the packet + */ + if ((pktBuf = AllocPktBuf()) == NULL) + { + droppedPackets++; + return (ERR_FRAME_REJECTED); + } + + /* + * Now kludge things. Note we will have to undo this later. This will + * make the packet contiguous after the MLID has done the requested copy. + */ + + tDBufDescr.tDDataCount = 1; + tDBufDescr.tDBufDescrRec[0].tDPtrType = NDIS_PTR_PHYSICAL; + tDBufDescr.tDBufDescrRec[0].tDDataPtr = pktBuf->buffer; + tDBufDescr.tDBufDescrRec[0].tDDataLen = pktBuf->length; + tDBufDescr.tDBufDescrRec[0].dummy = 0; + + result = MAC_DISPATCH(handle)->transferData (&bytesCopied, 0, &tDBufDescr, + handle->common->moduleDS); + pktBuf->packetLength = bytesCopied; + + if (result == ERR_SUCCESS) + EnquePktBuf(pktBuf); + else FreePktBuf (pktBuf); + + ARGSUSED (frameSize); + ARGSUSED (bytesAvail); + ARGSUSED (indicate); + ARGSUSED (protDS); + + return (ERR_SUCCESS); +} + +CALLBACK (NdisIndicationComplete (WORD macId, WORD protDS)) +{ + ARGSUSED (macId); + ARGSUSED (protDS); + + /* We don't give a hoot about these. Just return + */ + return (ERR_SUCCESS); +} + +/* + * This is the OTHER way we may receive packets + */ +CALLBACK (NdisReceiveChain (WORD macId, WORD frameSize, WORD reqHandle, + struct _RxBufDescr *rxBufDescr, + BYTE *indicate, WORD protDS)) +{ + struct _PktBuf *pktBuf; + int i; + + /* + * For now we copy the entire packet over to a PktBuf structure. This may be + * a performance hit but this routine probably isn't called very much, and + * it is a lot of work to do it otherwise. Also if it is a filter protocol + * packet we could end up sucking up MAC buffes. + */ + + if ((pktBuf = AllocPktBuf()) == NULL) + { + droppedPackets++; + return (ERR_FRAME_REJECTED); + } + pktBuf->packetLength = 0; + + /* Copy the packet to the buffer + */ + for (i = 0; i < rxBufDescr->rxDataCount; ++i) + { + struct _RxBufDescrRec *rxDescr = &rxBufDescr->rxBufDescrRec[i]; + + memcpy (pktBuf->buffer + pktBuf->packetLength, + rxDescr->rxDataPtr, rxDescr->rxDataLen); + pktBuf->packetLength += rxDescr->rxDataLen; + } + + EnquePktBuf (pktBuf); + + ARGSUSED (frameSize); + ARGSUSED (reqHandle); + ARGSUSED (indicate); + ARGSUSED (protDS); + + /* This frees up the buffer for the MAC to use + */ + return (ERR_SUCCESS); +} + +CALLBACK (NdisStatusProc (WORD macId, WORD param1, BYTE *indicate, + WORD opcode, WORD protDS)) +{ + switch (opcode) + { + case STATUS_RING_STATUS: + break; + case STATUS_ADAPTER_CHECK: + break; + case STATUS_START_RESET: + break; + case STATUS_INTERRUPT: + break; + case STATUS_END_RESET: + break; + default: + break; + } + ARGSUSED (macId); + ARGSUSED (param1); + ARGSUSED (indicate); + ARGSUSED (opcode); + ARGSUSED (protDS); + + /* We don't need to do anything about this stuff yet + */ + return (ERR_SUCCESS); +} + +/* + * Tell the NDIS driver to start the delivery of the packet + */ +int NdisSendPacket (struct _PktBuf *pktBuf, int macId) +{ + struct _TxBufDescr txBufDescr; + int result; + + xmitPending++; + txBufPending = pktBuf; /* we only have 1 pending Tx at a time */ + + txBufDescr.txImmedLen = 0; + txBufDescr.txImmedPtr = NULL; + txBufDescr.txDataCount = 1; + txBufDescr.txBufDescrRec[0].txPtrType = NDIS_PTR_PHYSICAL; + txBufDescr.txBufDescrRec[0].dummy = 0; + txBufDescr.txBufDescrRec[0].txDataLen = pktBuf->packetLength; + txBufDescr.txBufDescrRec[0].txDataPtr = pktBuf->buffer; + + result = MAC_DISPATCH(handle)->transmitChain (common.moduleId, + pktBuf->handle, + &txBufDescr, + handle->common->moduleDS); + switch (result) + { + case ERR_OUT_OF_RESOURCE: + /* Note that this should not happen but if it does there is not + * much we can do about it + */ + printf ("ERROR: transmit queue overflowed\n"); + return (0); + + case ERR_SUCCESS: + /* Everything was hunky dory and synchronous. Free up the + * packet buffer + */ + xmitPending--; + FreePktBuf (pktBuf); + return (1); + + case ERR_REQUEST_QUEUED: + /* Everything was hunky dory and asynchronous. Do nothing + */ + return (1); + + default: + printf ("Tx fail, code = %04X\n", result); + return (0); + } +} + + + +static int ndis_nerr = sizeof(ndis_errlist) / sizeof(ndis_errlist[0]); + +static char *Ndis_strerror (WORD errorCode) +{ + static char buf[30]; + int i; + + for (i = 0; i < ndis_nerr; i++) + if (errorCode == ndis_errlist[i].err_num) + return (ndis_errlist[i].err_text); + + sprintf (buf,"unknown error %d",errorCode); + return (buf); +} + + +char *NdisLastError (void) +{ + char *errStr = lastErr; + lastErr = NULL; + return (errStr); +} + +int NdisOpen (void) +{ + struct _ReqBlock reqBlock; + int result; + int ndisFd = open (NDIS_PATH, O_RDONLY); + + if (ndisFd < 0) + { + printf ("Could not open NDIS Protocol Manager device.\n"); + return (0); + } + + memset (&reqBlock, 0, sizeof(ReqBlock)); + + reqBlock.opcode = PM_GET_PROTOCOL_MANAGER_LINKAGE; + + result = NdisGetLinkage (ndisFd, (char*)&reqBlock, sizeof(ReqBlock)); + if (result != 0) + { + printf ("Could not get Protocol Manager linkage.\n"); + close (ndisFd); + return (0); + } + + close (ndisFd); + protManEntry = (ProtMan) reqBlock.pointer1; + protManDS = reqBlock.word1; + + DEBUG2 ("Entry Point = %04X:%04X\n", FP_SEG(protManEntry),FP_OFF(protManEntry)); + DEBUG1 ("ProtMan DS = %04X\n", protManDS); + return (1); +} + + +int NdisRegisterAndBind (int promis) +{ + struct _ReqBlock reqBlock; + WORD result; + + memset (&common,0,sizeof(common)); + + common.tableSize = sizeof (common); + + common.majorNdisVersion = 2; + common.minorNdisVersion = 0; + common.majorModuleVersion = 2; + common.minorModuleVersion = 0; + + /* Indicates binding from below and dynamically loaded + */ + common.moduleFlags = 0x00000006L; + + strcpy (common.moduleName, "PCAP"); + + common.protocolLevelUpper = 0xFF; + common.protocolLevelLower = 1; + common.interfaceLower = 1; +#ifdef __DJGPP__ + common.moduleDS = _dos_ds; /* the callback data segment */ +#else + common.moduleDS = _DS; +#endif + + common.systemRequest = (SystemRequest) systemRequestGlue; + common.serviceChars = (BYTE*) &protChars; + common.serviceStatus = NULL; + common.upperDispatchTable = NULL; + common.lowerDispatchTable = (BYTE*) &lowerTable; + + protChars.length = sizeof (protChars); + protChars.name[0] = 0; + protChars.type = 0; + + lowerTable.backPointer = &common; + lowerTable.requestConfirm = requestConfirmGlue; + lowerTable.transmitConfirm = transmitConfirmGlue; + lowerTable.receiveLookahead = receiveLookaheadGlue; + lowerTable.indicationComplete = indicationCompleteGlue; + lowerTable.receiveChain = receiveChainGlue; + lowerTable.status = statusGlue; + lowerTable.flags = 3; + if (promis) + lowerTable.flags |= 4; /* promiscous mode (receive everything) */ + + bindings.numBindings = 1; + strcpy (bindings.moduleName[0], handle->moduleName); + + /* Register ourselves with NDIS + */ + reqBlock.opcode = PM_REGISTER_MODULE; + reqBlock.pointer1 = (BYTE FAR*) &common; + reqBlock.pointer2 = (BYTE FAR*) &bindings; + + result = (*protManEntry) (&reqBlock, protManDS); + if (result) + { + printf ("Protman registering failed: %s\n", Ndis_strerror(result)); + return (0); + } + + /* Start the binding process + */ + reqBlock.opcode = PM_BIND_AND_START; + reqBlock.pointer1 = (BYTE FAR*) &failingModules; + + result = (*protManEntry) (&reqBlock, protManDS); + if (result) + { + printf ("Start binding failed: %s\n", Ndis_strerror(result)); + return (0); + } + return (1); +} + +static int CheckMacFeatures (CardHandle *card) +{ + DWORD serviceFlags; + BYTE _far *mediaString; + BYTE _far *mac_addr; + + DEBUG2 ("checking card features\n" + "common table address = %08lX, macId = %d\n", + card->common, card->common->moduleId); + + serviceFlags = MAC_CHAR (handle)->serviceFlags; + + if ((serviceFlags & SF_PROMISCUOUS) == 0) + { + printf ("The MAC %s does not support promiscuous mode.\n", + card->moduleName); + return (0); + } + + mediaString = MAC_CHAR (handle)->macName; + + DEBUG1 ("media type = %s\n",mediaString); + + /* Get the media type. And set the header size + */ + if (!strncmp(mediaString,"802.3",5) || + !strncmp(mediaString,"DIX",3) || + !strncmp(mediaString,"DIX+802.3",9)) + headerSize = sizeof (EthernetIIHeader); + + else if (!strncmp(mediaString,"FDDI",4)) + headerSize = sizeof (FddiHeader) + + sizeof (Ieee802Dot2SnapHeader); + else + { + printf ("Unsupported MAC type: `%s'\n", mediaString); + return (0); + } + + frameSize = MAC_CHAR (handle)->maxFrameSize; + mac_addr = MAC_CHAR (handle)->currentAddress; + + printf ("Hardware address: %02X:%02X:%02X:%02X:%02X:%02X\n", + mac_addr[0], mac_addr[1], mac_addr[2], + mac_addr[3], mac_addr[4], mac_addr[5]); + return (1); +} + +static int NdisStartMac (CardHandle *card) +{ + WORD result; + + /* Set the lookahead length + */ + result = MAC_DISPATCH(handle)->request (common.moduleId, 0, + headerSize, 0, + REQ_SET_LOOKAHEAD, + card->common->moduleDS); + + /* We assume that if we got INVALID PARAMETER then either this + * is not supported or will work anyway. NE2000 does this. + */ + if (result != ERR_SUCCESS && result != ERR_INVALID_PARAMETER) + { + DEBUG1 ("Set lookahead failed: %s\n", Ndis_strerror(result)); + return (0); + } + + /* Set the packet filter. Note that for some medias and drivers we + * must specify all three flags or the card(s) will not operate correctly. + */ + result = MAC_DISPATCH(handle)->request (common.moduleId, 0, + /* all packets */ FILTER_PROMISCUOUS | + /* packets to us */ FILTER_DIRECTED | + /* broadcasts */ FILTER_BROADCAST, + 0, REQ_SET_PACKET_FILTER, + card->common->moduleDS); + if (result != ERR_SUCCESS) + { + DEBUG1 ("Set packet filter failed: %s\n", Ndis_strerror(result)); + return (0); + } + + /* If OPEN/CLOSE supported then open the adapter + */ + if (MAC_CHAR(handle)->serviceFlags & SF_OPEN_CLOSE) + { + result = MAC_DISPATCH(handle)->request (common.moduleId, 0, 0, NULL, + REQ_OPEN_ADAPTER, + card->common->moduleDS); + if (result != ERR_SUCCESS) + { + DEBUG1 ("Opening the MAC failed: %s\n", Ndis_strerror(result)); + return (0); + } + } + return (1); +} + +void NdisShutdown (void) +{ + struct _ReqBlock reqBlock; + int result, i; + + if (!handle) + return; + + /* If the adapters support open and are open then close them + */ + if ((MAC_CHAR(handle)->serviceFlags & SF_OPEN_CLOSE) && + (MAC_STATUS(handle)->macStatus & MAC_OPEN)) + { + result = MAC_DISPATCH(handle)->request (common.moduleId, 0, 0, 0, + REQ_CLOSE_ADAPTER, + handle->common->moduleDS); + if (result != ERR_SUCCESS) + { + printf ("Closing the MAC failed: %s\n", Ndis_strerror(result)); + return; + } + } + + /* Tell the Protocol Manager to unbind and stop + */ + reqBlock.opcode = PM_UNBIND_AND_STOP; + reqBlock.pointer1 = (BYTE FAR*) &failingModules; + reqBlock.pointer2 = NULL; + + result = (*protManEntry) (&reqBlock, protManDS); + if (result) + printf ("Unbind failed: %s\n", Ndis_strerror(result)); + + for (i = 0; i < STACK_POOL_SIZE; ++i) + free (freeStacks[i] - STACK_SIZE); + + handle = NULL; +} + +int NdisInit (int promis) +{ + int i, result; + + /* Allocate the real mode stacks used for NDIS callbacks + */ + for (i = 0; i < STACK_POOL_SIZE; ++i) + { + freeStacks[i] = malloc (STACK_SIZE); + if (!freeStacks[i]) + return (0); + freeStacks[i] += STACK_SIZE; + } + + if (!NdisOpen()) + return (0); + + if (!NdisRegisterAndBind(promis)) + return (0); + + DEBUG1 ("My module id: %d\n", common.moduleId); + DEBUG1 ("Handle id; %d\n", handle->common->moduleId); + DEBUG1 ("MAC card: %-16s - ", handle->moduleName); + + atexit (NdisShutdown); + + if (!CheckMacFeatures(&handle)) + return (0); + + switch (mediaType) + { + case MEDIA_FDDI: + DEBUG0 ("Media type: FDDI"); + break; + case MEDIA_ETHERNET: + DEBUG0 ("Media type: ETHERNET"); + break; + default: + DEBUG0 ("Unsupported media.\n"); + return (0); + } + + DEBUG1 (" - Frame size: %d\n", frameSize); + + if (!NdisStartMac(&handle)) + return (0); + return (1); +} +#endif /* USE_NDIS2 */ + diff --git a/msdos/ndis2.h b/msdos/ndis2.h new file mode 100644 index 0000000..dc72f4c --- /dev/null +++ b/msdos/ndis2.h @@ -0,0 +1,559 @@ +/* + * Copyright (c) 1993,1994 + * Texas A&M University. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Texas A&M University + * and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * Developers: + * David K. Hess, Douglas Lee Schales, David R. Safford + * + * Heavily modified for Metaware HighC + GNU C 2.8+ + * Gisle Vanem 1998 + */ + +#ifndef __PCAP_NDIS_H +#define __PCAP_NDIS_H + +#if defined (__HIGHC__) + #define pascal _CC(_CALLEE_POPS_STACK & ~_REVERSE_PARMS) /* calling convention */ + #define CALLBACK(foo) pascal WORD foo + #define PAS_PTR(x,arg) typedef FAR WORD pascal (*x) arg + #define GUARD() _inline (0x9C,0xFA) /* pushfd, cli */ + #define UNGUARD() _inline (0x9D) /* popfd */ + #define FAR _far + +#elif defined(__GNUC__) + #define CALLBACK(foo) WORD foo __attribute__((stdcall)) + #define PAS_PTR(x,arg) typedef WORD (*x) arg __attribute__((stdcall)) + #define GUARD() __asm__ __volatile__ ("pushfd; cli") + #define UNGUARD() __asm__ __volatile__ ("popfd") + #define FAR + +#elif defined (__TURBOC__) + #define CALLBACK(foo) WORD pascal foo + #define PAS_PTR(x,arg) typedef WORD pascal (_far *x) arg + #define GUARD() _asm { pushf; cli } + #define UNGUARD() _asm { popf } + #define FAR _far + +#elif defined (__WATCOMC__) + #define CALLBACK(foo) WORD pascal foo + #define PAS_PTR(x,arg) typedef WORD pascal (_far *x) arg + #define GUARD() _disable() + #define UNGUARD() _enable() + #define FAR _far + +#else + #error Unsupported compiler +#endif + + +/* + * Forwards + */ +struct _ReqBlock; +struct _TxBufDescr; +struct _TDBufDescr; + +/* + * Protocol Manager API + */ +PAS_PTR (ProtMan, (struct _ReqBlock FAR*, WORD)); + +/* + * System request + */ +PAS_PTR (SystemRequest, (DWORD, DWORD, WORD, WORD, WORD)); + +/* + * MAC API + */ +PAS_PTR (TransmitChain, (WORD, WORD, struct _TxBufDescr FAR*, WORD)); +PAS_PTR (TransferData, (WORD*,WORD, struct _TDBufDescr FAR*, WORD)); +PAS_PTR (Request, (WORD, WORD, WORD, DWORD, WORD, WORD)); +PAS_PTR (ReceiveRelease,(WORD, WORD)); +PAS_PTR (IndicationOn, (WORD)); +PAS_PTR (IndicationOff, (WORD)); + + +typedef enum { + HARDWARE_NOT_INSTALLED = 0, + HARDWARE_FAILED_DIAG = 1, + HARDWARE_FAILED_CONFIG = 2, + HARDWARE_HARD_FAULT = 3, + HARDWARE_SOFT_FAULT = 4, + HARDWARE_OK = 7, + HARDWARE_MASK = 0x0007, + MAC_BOUND = 0x0008, + MAC_OPEN = 0x0010, + DIAG_IN_PROGRESS = 0x0020 + } NdisMacStatus; + +typedef enum { + STATUS_RING_STATUS = 1, + STATUS_ADAPTER_CHECK = 2, + STATUS_START_RESET = 3, + STATUS_INTERRUPT = 4, + STATUS_END_RESET = 5 + } NdisStatus; + +typedef enum { + FILTER_DIRECTED = 1, + FILTER_BROADCAST = 2, + FILTER_PROMISCUOUS = 4, + FILTER_SOURCE_ROUTE = 8 + } NdisPacketFilter; + +typedef enum { + REQ_INITIATE_DIAGNOSTICS = 1, + REQ_READ_ERROR_LOG = 2, + REQ_SET_STATION_ADDRESS = 3, + REQ_OPEN_ADAPTER = 4, + REQ_CLOSE_ADAPTER = 5, + REQ_RESET_MAC = 6, + REQ_SET_PACKET_FILTER = 7, + REQ_ADD_MULTICAST_ADDRESS = 8, + REQ_DELETE_MULTICAST_ADDRESS = 9, + REQ_UPDATE_STATISTICS = 10, + REQ_CLEAR_STATISTICS = 11, + REQ_INTERRUPT_REQUEST = 12, + REQ_SET_FUNCTIONAL_ADDRESS = 13, + REQ_SET_LOOKAHEAD = 14 + } NdisGeneralRequest; + +typedef enum { + SF_BROADCAST = 0x00000001L, + SF_MULTICAST = 0x00000002L, + SF_FUNCTIONAL = 0x00000004L, + SF_PROMISCUOUS = 0x00000008L, + SF_SOFT_ADDRESS = 0x00000010L, + SF_STATS_CURRENT = 0x00000020L, + SF_INITIATE_DIAGS = 0x00000040L, + SF_LOOPBACK = 0x00000080L, + SF_RECEIVE_CHAIN = 0x00000100L, + SF_SOURCE_ROUTING = 0x00000200L, + SF_RESET_MAC = 0x00000400L, + SF_OPEN_CLOSE = 0x00000800L, + SF_INTERRUPT_REQUEST = 0x00001000L, + SF_SOURCE_ROUTING_BRIDGE = 0x00002000L, + SF_VIRTUAL_ADDRESSES = 0x00004000L + } NdisMacServiceFlags; + +typedef enum { + REQ_INITIATE_BIND = 1, + REQ_BIND = 2, + REQ_INITIATE_PREBIND = 3, + REQ_INITIATE_UNBIND = 4, + REQ_UNBIND = 5 + } NdisSysRequest; + +typedef enum { + PM_GET_PROTOCOL_MANAGER_INFO = 1, + PM_REGISTER_MODULE = 2, + PM_BIND_AND_START = 3, + PM_GET_PROTOCOL_MANAGER_LINKAGE = 4, + PM_GET_PROTOCOL_INI_PATH = 5, + PM_REGISTER_PROTOCOL_MANAGER_INFO = 6, + PM_INIT_AND_REGISTER = 7, + PM_UNBIND_AND_STOP = 8, + PM_BIND_STATUS = 9, + PM_REGISTER_STATUS = 10 + } NdisProtManager; + + +typedef enum { + ERR_SUCCESS = 0x00, + ERR_WAIT_FOR_RELEASE = 0x01, + ERR_REQUEST_QUEUED = 0x02, + ERR_FRAME_NOT_RECOGNIZED = 0x03, + ERR_FRAME_REJECTED = 0x04, + ERR_FORWARD_FRAME = 0x05, + ERR_OUT_OF_RESOURCE = 0x06, + ERR_INVALID_PARAMETER = 0x07, + ERR_INVALID_FUNCTION = 0x08, + ERR_NOT_SUPPORTED = 0x09, + ERR_HARDWARE_ERROR = 0x0A, + ERR_TRANSMIT_ERROR = 0x0B, + ERR_NO_SUCH_DESTINATION = 0x0C, + ERR_BUFFER_TOO_SMALL = 0x0D, + ERR_ALREADY_STARTED = 0x20, + ERR_INCOMPLETE_BINDING = 0x21, + ERR_DRIVER_NOT_INITIALIZED = 0x22, + ERR_HARDWARE_NOT_FOUND = 0x23, + ERR_HARDWARE_FAILURE = 0x24, + ERR_CONFIGURATION_FAILURE = 0x25, + ERR_INTERRUPT_CONFLICT = 0x26, + ERR_INCOMPATIBLE_MAC = 0x27, + ERR_INITIALIZATION_FAILED = 0x28, + ERR_NO_BINDING = 0x29, + ERR_NETWORK_MAY_NOT_BE_CONNECTED = 0x2A, + ERR_INCOMPATIBLE_OS_VERSION = 0x2B, + ERR_ALREADY_REGISTERED = 0x2C, + ERR_PATH_NOT_FOUND = 0x2D, + ERR_INSUFFICIENT_MEMORY = 0x2E, + ERR_INFO_NOT_FOUND = 0x2F, + ERR_GENERAL_FAILURE = 0xFF + } NdisError; + +#define NDIS_PARAM_INTEGER 0 +#define NDIS_PARAM_STRING 1 + +#define NDIS_TX_BUF_LENGTH 8 +#define NDIS_TD_BUF_LENGTH 1 +#define NDIS_RX_BUF_LENGTH 8 + +#define NDIS_PTR_PHYSICAL 0 +#define NDIS_PTR_VIRTUAL 2 + +#define NDIS_PATH "PROTMAN$" + + +typedef struct _CommonChars { + WORD tableSize; + BYTE majorNdisVersion; /* 2 - Latest version */ + BYTE minorNdisVersion; /* 0 */ + WORD reserved1; + BYTE majorModuleVersion; + BYTE minorModuleVersion; + DWORD moduleFlags; + /* 0 - Binding at upper boundary supported + * 1 - Binding at lower boundary supported + * 2 - Dynamically bound. + * 3-31 - Reserved, must be zero. + */ + BYTE moduleName[16]; + BYTE protocolLevelUpper; + /* 1 - MAC + * 2 - Data Link + * 3 - Network + * 4 - Transport + * 5 - Session + * -1 - Not specified + */ + BYTE interfaceUpper; + BYTE protocolLevelLower; + /* 0 - Physical + * 1 - MAC + * 2 - Data Link + * 3 - Network + * 4 - Transport + * 5 - Session + * -1 - Not specified + */ + BYTE interfaceLower; + WORD moduleId; + WORD moduleDS; + SystemRequest systemRequest; + BYTE *serviceChars; + BYTE *serviceStatus; + BYTE *upperDispatchTable; + BYTE *lowerDispatchTable; + BYTE *reserved2; /* Must be NULL */ + BYTE *reserved3; /* Must be NULL */ + } CommonChars; + + +typedef struct _MulticastList { + WORD maxMulticastAddresses; + WORD numberMulticastAddresses; + BYTE multicastAddress[16][16]; + } MulticastList; + + +typedef struct _MacChars { + WORD tableSize; + BYTE macName[16]; + WORD addressLength; + BYTE permanentAddress[16]; + BYTE currentAddress[16]; + DWORD currentFunctionalAddress; + MulticastList *multicastList; + DWORD linkSpeed; + DWORD serviceFlags; + WORD maxFrameSize; + DWORD txBufferSize; + WORD txBufferAllocSize; + DWORD rxBufferSize; + WORD rxBufferAllocSize; + BYTE ieeeVendor[3]; + BYTE vendorAdapter; + BYTE *vendorAdapterDescription; + WORD interruptLevel; + WORD txQueueDepth; + WORD maxDataBlocks; + } MacChars; + + +typedef struct _ProtocolChars { + WORD length; + BYTE name[16]; + WORD type; + } ProtocolChars; + + +typedef struct _MacUpperDispatch { + CommonChars *backPointer; + Request request; + TransmitChain transmitChain; + TransferData transferData; + ReceiveRelease receiveRelease; + IndicationOn indicationOn; + IndicationOff indicationOff; + } MacUpperDispatch; + + +typedef struct _MacStatusTable { + WORD tableSize; + DWORD lastDiag; + DWORD macStatus; + WORD packetFilter; + BYTE *mediaSpecificStats; + DWORD lastClear; + DWORD totalFramesRx; + DWORD totalFramesCrc; + DWORD totalBytesRx; + DWORD totalDiscardBufSpaceRx; + DWORD totalMulticastRx; + DWORD totalBroadcastRx; + DWORD obsolete1[5]; + DWORD totalDiscardHwErrorRx; + DWORD totalFramesTx; + DWORD totalBytesTx; + DWORD totalMulticastTx; + DWORD totalBroadcastTx; + DWORD obsolete2[2]; + DWORD totalDiscardTimeoutTx; + DWORD totalDiscardHwErrorTx; + } MacStatusTable; + + +typedef struct _ProtDispatch { + CommonChars *backPointer; + DWORD flags; + /* 0 - handles non-LLC frames + * 1 - handles specific-LSAP LLC frames + * 2 - handles specific-LSAP LLC frames + * 3-31 - reserved must be 0 + */ + void (*requestConfirm) (void); + void (*transmitConfirm) (void); + void (*receiveLookahead) (void); + void (*indicationComplete) (void); + void (*receiveChain) (void); + void (*status) (void); + } ProtDispatch; + + +typedef struct _ReqBlock { + WORD opcode; + WORD status; + BYTE FAR *pointer1; + BYTE FAR *pointer2; + WORD word1; + } ReqBlock; + + +typedef struct _TxBufDescrRec { + BYTE txPtrType; + BYTE dummy; + WORD txDataLen; + BYTE *txDataPtr; + } TxBufDescrRec; + + +typedef struct _TxBufDescr { + WORD txImmedLen; + BYTE *txImmedPtr; + WORD txDataCount; + TxBufDescrRec txBufDescrRec[NDIS_TX_BUF_LENGTH]; + } TxBufDescr; + + +typedef struct _TDBufDescrRec { + BYTE tDPtrType; + BYTE dummy; + WORD tDDataLen; + BYTE *tDDataPtr; + } TDBufDescrRec; + + +typedef struct _TDBufDescr { + WORD tDDataCount; + TDBufDescrRec tDBufDescrRec[NDIS_TD_BUF_LENGTH]; + } TDBufDescr; + + +typedef struct _RxBufDescrRec { + WORD rxDataLen; + BYTE *rxDataPtr; + } RxBufDescrRec; + + +typedef struct _RxBufDescr { + WORD rxDataCount; + RxBufDescrRec rxBufDescrRec[NDIS_RX_BUF_LENGTH]; + } RxBufDescr; + + +typedef struct _PktBuf { + struct _PktBuf *nextLink; + struct _PktBuf *prevLink; + int handle; + int length; + int packetLength; + DWORD sequence; + BYTE *buffer; + } PktBuf; + + +typedef struct _CardHandle { + BYTE moduleName[16]; + CommonChars *common; + } CardHandle; + + +typedef struct _BindingsList { + WORD numBindings; + BYTE moduleName[2][16]; + } BindingsList; + + +typedef struct _FailingModules { + BYTE upperModuleName[16]; + BYTE lowerModuleName[16]; + } FailingModules; + + +typedef union _HardwareAddress { + BYTE bytes[6]; + WORD words[3]; + struct { + BYTE bytes[6]; + } addr; + } HardwareAddress; + + +typedef struct _FddiHeader { + BYTE frameControl; + HardwareAddress etherDestHost; + HardwareAddress etherSrcHost; + } FddiHeader; + + +typedef struct _EthernetIIHeader { + HardwareAddress etherDestHost; + HardwareAddress etherSrcHost; + WORD etherType; + } EthernetIIHeader; + + +typedef struct _Ieee802Dot5Header { + HardwareAddress etherDestHost; + HardwareAddress etherSrcHost; + BYTE routeInfo[30]; + } Ieee802Dot5Header; + + +typedef struct _Ieee802Dot2SnapHeader { + BYTE dsap; /* 0xAA */ + BYTE ssap; /* 0xAA */ + BYTE control; /* 3 */ + BYTE protocolId[5]; + } Ieee802Dot2SnapHeader; + + +/* + * Prototypes + */ +extern char *NdisLastError (void); +extern int NdisOpen (void); +extern int NdisInit (int promis); +extern int NdisRegisterAndBind (int promis); +extern void NdisShutdown (void); +extern void NdisCheckMacFeatures (struct _CardHandle *card); +extern int NdisSendPacket (struct _PktBuf *pktBuf, int macId); + +/* + * Assembly "glue" functions + */ +extern int systemRequestGlue(); +extern int requestConfirmGlue(); +extern int transmitConfirmGlue(); +extern int receiveLookaheadGlue(); +extern int indicationCompleteGlue(); +extern int receiveChainGlue(); +extern int statusGlue(); + +/* + * IOCTL function + */ +#ifdef __SMALL__ +extern int _far NdisGetLinkage (int handle, char *data, int size); +#else +extern int NdisGetLinkage (int handle, char *data, int size); +#endif + +/* + * NDIS callback handlers + */ +CALLBACK (NdisSystemRequest (DWORD,DWORD, WORD, WORD, WORD)); +CALLBACK (NdisRequestConfirm ( WORD, WORD, WORD, WORD, WORD,WORD)); +CALLBACK (NdisTransmitConfirm ( WORD, WORD, WORD, WORD, WORD)); +CALLBACK (NdisReceiveLookahead ( WORD, WORD, WORD, BYTE*, BYTE*, WORD)); +CALLBACK (NdisReceiveChain ( WORD, WORD, WORD, struct _RxBufDescr*, BYTE*, WORD)); +CALLBACK (NdisStatusProc ( WORD, WORD, BYTE*, WORD,WORD)); +CALLBACK (NdisIndicationComplete( WORD, WORD)); + +BYTE *NdisAllocStack (void); +void NdisFreeStack (BYTE*); + +#ifdef __HIGHC__ + #define RENAME_ASM_SYM(x) pragma Alias(x,"@" #x "") /* prepend `@' */ + #define RENAME_C_SYM(x) pragma Alias(x,"_" #x "") /* prepend `_' */ + + RENAME_ASM_SYM (systemRequestGlue); + RENAME_ASM_SYM (requestConfirmGlue); + RENAME_ASM_SYM (transmitConfirmGlue); + RENAME_ASM_SYM (receiveLookaheadGlue); + RENAME_ASM_SYM (indicationCompleteGlue); + RENAME_ASM_SYM (receiveChainGlue); + RENAME_ASM_SYM (statusGlue); + RENAME_ASM_SYM (NdisGetLinkage); + RENAME_C_SYM (NdisSystemRequest); + RENAME_C_SYM (NdisRequestConfirm); + RENAME_C_SYM (NdisTransmitConfirm); + RENAME_C_SYM (NdisReceiveLookahead); + RENAME_C_SYM (NdisIndicationComplete); + RENAME_C_SYM (NdisReceiveChain); + RENAME_C_SYM (NdisStatusProc); + RENAME_C_SYM (NdisAllocStack); + RENAME_C_SYM (NdisFreeStack); +#endif + +#endif diff --git a/msdos/ndis_0.asm b/msdos/ndis_0.asm new file mode 100644 index 0000000..2990985 --- /dev/null +++ b/msdos/ndis_0.asm @@ -0,0 +1,188 @@ +PAGE 60,132 +NAME NDIS_0 + +ifdef DOSX + .386 + _TEXT SEGMENT PUBLIC DWORD USE16 'CODE' + _TEXT ENDS + _DATA SEGMENT PUBLIC DWORD USE16 'CODE' + _DATA ENDS + _TEXT32 SEGMENT PUBLIC BYTE USE32 'CODE' + _TEXT32 ENDS + CB_DSEG EQU ; DOSX is tiny-model + D_SEG EQU <_TEXT SEGMENT> + D_END EQU <_TEXT ENDS> + ASSUME CS:_TEXT,DS:_TEXT + + PUSHREGS equ + POPREGS equ + + PUBPROC macro name + align 4 + public @&name + @&name label near + endm +else + .286 + _TEXT SEGMENT PUBLIC DWORD 'CODE' + _TEXT ENDS + _DATA SEGMENT PUBLIC DWORD 'DATA' + _DATA ENDS + CB_DSEG EQU ; 16bit is small/large model + D_SEG EQU <_DATA SEGMENT> + D_END EQU <_DATA ENDS> + ASSUME CS:_TEXT,DS:_DATA + + PUSHREGS equ + POPREGS equ + + PUBPROC macro name + public _&name + _&name label far + endm +endif + +;------------------------------------------- + +D_SEG + +D_END + + +_TEXT SEGMENT + +EXTRN _NdisSystemRequest : near +EXTRN _NdisRequestConfirm : near +EXTRN _NdisTransmitConfirm : near +EXTRN _NdisReceiveLookahead : near +EXTRN _NdisIndicationComplete : near +EXTRN _NdisReceiveChain : near +EXTRN _NdisStatusProc : near +EXTRN _NdisAllocStack : near +EXTRN _NdisFreeStack : near + +; +; *ALL* interrupt threads come through this macro. +; +CALLBACK macro callbackProc, argsSize + + pushf + PUSHREGS ;; Save the registers + + push es + push ds + mov ax,CB_DSEG ;; Load DS + mov ds,ax + call _NdisAllocStack ;; Get and install a stack. + + mov bx,ss ;; Save off the old stack in other regs + mov cx,sp + mov ss,dx ;; Install the new one + mov sp,ax + push bx ;; Save the old one on to the new stack + push cx + sub sp,&argsSize ;; Allocate space for arguments on the stack + + mov ax,ss ;; Set up the destination for the move + mov es,ax + mov di,sp + mov ds,bx ;; Set up the source for the move. + mov si,cx + add si,4+6+32 + + mov cx,&argsSize ;; Move the arguments to the stack. + shr cx,1 + cld + rep movsw + + mov ax,CB_DSEG ;; Set my data segment again. + mov ds,ax + + call &callbackProc ;; Call the real callback. + pop di ;; Pop off the old stack + pop si + mov bx,ss ;; Save off the current allocated stack. + mov cx,sp + mov ss,si ;; Restore the old stack + mov sp,di + push ax ;; Save the return code + push bx ;; Free the stack. Push the pointer to it + push cx + call _NdisFreeStack + add sp,4 + pop ax ;; Get the return code back + add di,32 ;; Get a pointer to ax on the stack + mov word ptr ss:[di],ax + pop ds + pop es + + POPREGS + popf +endm + +; +; Define all of the callbacks for the NDIS procs. +; + +PUBPROC systemRequestGlue +CALLBACK _NdisSystemRequest,14 +RETF + +PUBPROC requestConfirmGlue +CALLBACK _NdisRequestConfirm,12 +RETF + +PUBPROC transmitConfirmGlue +CALLBACK _NdisTransmitConfirm,10 +RETF + +PUBPROC receiveLookaheadGlue +CALLBACK _NdisReceiveLookahead,16 +RETF + +PUBPROC indicationCompleteGlue +CALLBACK _NdisIndicationComplete,4 +RETF + +PUBPROC receiveChainGlue +CALLBACK _NdisReceiveChain,16 +RETF + +PUBPROC statusGlue +CALLBACK _NdisStatusProc,12 +RETF + +; +; int FAR NdisGetLinkage (int handle, char *data, int size); +; + +ifdef DOSX + PUBPROC NdisGetLinkage + push ebx + mov ebx, [esp+8] ; device handle + mov eax, 4402h ; IOCTRL read function + mov edx, [esp+12] ; DS:EDX -> result data + mov ecx, [esp+16] ; ECX = length + int 21h + pop ebx + jc @fail + xor eax, eax + @fail: ret + +else + PUBPROC NdisGetLinkage + enter 0, 0 + mov bx, [bp+6] + mov ax, 4402h + mov dx, [bp+8] + mov cx, [bp+12] + int 21h + jc @fail + xor ax, ax + @fail: leave + retf +endif + +ENDS + +END diff --git a/msdos/pkt_rx0.asm b/msdos/pkt_rx0.asm new file mode 100644 index 0000000..94f3d09 --- /dev/null +++ b/msdos/pkt_rx0.asm @@ -0,0 +1,197 @@ +PAGE 60,132 +NAME PKT_RX + +ifdef ??version ; using TASM + masm + jumps +endif + +PUBLIC _pktDrop, _pktRxBuf, _pktTxBuf, _pktTemp +PUBLIC _rxOutOfs, _rxInOfs, _PktReceiver, _pktRxEnd + +; +; these sizes MUST be equal to the sizes in PKTDRVR.H +; + +RX_BUF_SIZE = 1500 ; max message size on Ethernet +TX_BUF_SIZE = 1500 + +ifdef DOSX + .386 + NUM_RX_BUF = 32 ; # of RX element buffers + _TEXT SEGMENT PUBLIC DWORD USE16 'CODE' + _TEXT ENDS + _DATA SEGMENT PUBLIC DWORD USE16 'CODE' + _DATA ENDS + D_SEG EQU <_TEXT SEGMENT> + D_END EQU <_TEXT ENDS> + ASSUME CS:_TEXT,DS:_TEXT +else + .286 + NUM_RX_BUF = 10 + _TEXT SEGMENT PUBLIC DWORD 'CODE' + _TEXT ENDS + _DATA SEGMENT PUBLIC DWORD 'DATA' + _DATA ENDS + D_SEG EQU <_DATA SEGMENT> + D_END EQU <_DATA ENDS> + ASSUME CS:_TEXT,DS:_DATA +endif + +;------------------------------------------- + +D_SEG + +RX_ELEMENT STRUC + firstCount dw 0 ; # of bytes on 1st call + secondCount dw 0 ; # of bytes on 2nd call + handle dw 0 ; handle for upcall + destinAdr db 6 dup (0) ; packet destination address + sourceAdr db 6 dup (0) ; packet source address + protocol dw 0 ; packet protocol number + rxBuffer db RX_BUF_SIZE dup (0) ; RX buffer +ENDS + align 4 +_rxOutOfs dw offset _pktRxBuf ; ring buffer offsets +_rxInOfs dw offset _pktRxBuf ; into _pktRxBuf +_pktDrop dw 0,0 ; packet drop counter +_pktTemp db 20 dup (0) ; temp work area +_pktTxBuf db (TX_BUF_SIZE+14) dup (0) ; TX buffer +_pktRxBuf RX_ELEMENT NUM_RX_BUF dup (<>) ; RX structures + LAST_OFS = offset $ + + screenSeg dw 0B800h + newInOffset dw 0 + + fanChars db '-\|/' + fanIndex dw 0 + +D_END + +_TEXT SEGMENT + + +SHOW_RX MACRO + push es + push bx + mov bx, screenSeg + mov es, bx ;; r-mode segment of colour screen + mov di, 158 ;; upper right corner - 1 + mov bx, fanIndex + mov al, fanChars[bx] ;; get write char + mov ah, 15 ;; and white colour + stosw ;; write to screen at ES:EDI + inc fanIndex ;; update next index + and fanIndex, 3 + pop bx + pop es +ENDM + +;------------------------------------------------------------------------ +; +; This macro return ES:DI to tail of Rx queue + +ENQUEUE MACRO + LOCAL @noWrap + mov ax, _rxInOfs ;; DI = current in-offset + add ax, SIZE RX_ELEMENT ;; point to next _pktRxBuf buffer + cmp ax, LAST_OFS ;; pointing past last ? + jb @noWrap ;; no - jump + lea ax, _pktRxBuf ;; yes, point to 1st buffer + align 4 +@noWrap: cmp ax, _rxOutOfs ;; in-ofs = out-ofs ? + je @dump ;; yes, queue is full + mov di, _rxInOfs ;; ES:DI -> buffer at queue input + mov newInOffset, ax ;; remember new input offset + + ;; NOTE. rxInOfs is updated after the packet has been copied + ;; to ES:DI (= DS:SI on 2nd call) by the packet driver + +ENDM + +;------------------------------------------------------------------------ +; +; This routine gets called by the packet driver twice: +; 1st time (AX=0) it requests an address where to put the packet +; +; 2nd time (AX=1) the packet has been copied to this location (DS:SI) +; BX has client handle (stored in RX_ELEMENT.handle). +; CX has # of bytes in packet on both call. They should be equal. +; +; A test for equality is done by putting CX in _pktRxBuf [n].firstCount +; and _pktRxBuf[n].secondCount, and CL on first call in +; _pktRxBuf[n].rxBuffer[CX]. These values are checked in "PktReceive" +; (PKTDRVR.C) +; +;--------------------------------------------------------------------- + +_PktReceiver: + pushf + cli ; no distraction wanted ! + push ds + push bx +ifdef DOSX + mov bx, cs +else + mov bx, SEG _DATA +endif + mov ds, bx + mov es, bx ; ES = DS = CS or seg _DATA + pop bx ; restore handle + + cmp ax, 0 ; first call? (AX=0) + jne @post ; AX=1: second call, do post process + +ifdef DEBUG + SHOW_RX ; show that a packet is received +endif + cmp cx, RX_BUF_SIZE+14 ; size OK ? + ja @skip ; no, packet to large for us + + ENQUEUE ; ES:DI -> _pktRxBuf[n] + + mov [di].firstCount, cx ; remember the first count. + mov [di].handle, bx ; remember the handle. + add di, 6 ; ES:DI -> _pktRxBuf[n].destinAdr + pop ds + popf + retf ; far return to driver with ES:DI + + align 4 +@dump: inc _pktDrop[0] ; discard the packet on 1st call + adc _pktDrop[2], 0 ; increment packets lost + +@skip: xor di, di ; return ES:DI = NIL pointer + xor ax, ax + mov es, ax + pop ds + popf + retf + + align 4 +@post: or si, si ; DS:SI->_pktRxBuf[n][n].destinAdr + jz @discard ; make sure we don't use NULL-pointer + + sub si, 6 ; DS:SI -> _pktRxBuf[n].destinAdr + ; + ; push si + ; push [si].firstCount + ; call bpf_filter_match ; run the filter here some day? + ; add sp, 4 + ; cmp ax, 0 + ; je @discard + + mov [si].secondCount, cx + mov ax, newInOffset + mov _rxInOfs, ax ; update _pktRxBuf input offset + + align 4 +@discard:pop ds + popf + retf + +_pktRxEnd db 0 ; marker for end of r-mode code/data + +_TEXT ENDS + +END diff --git a/msdos/pkt_rx1.s b/msdos/pkt_rx1.s new file mode 100644 index 0000000..b294a36 --- /dev/null +++ b/msdos/pkt_rx1.s @@ -0,0 +1,155 @@ +; +; This file requires NASM 0.97+ to assemble +; +; Currently used only for djgpp + DOS4GW targets +; +; these sizes MUST be equal to the sizes in PKTDRVR.H +; +%define ETH_MTU 1500 ; max data size on Ethernet +%define ETH_MIN 60 ; min/max total frame size +%define ETH_MAX (ETH_MTU+2*6+2) +%define NUM_RX_BUF 32 ; # of RX element buffers +%define RX_SIZE (ETH_MAX+6) ; sizeof(RX_ELEMENT) = 1514+6 +%idefine offset + +struc RX_ELEMENT + .firstCount resw 1 ; # of bytes on 1st call + .secondCount resw 1 ; # of bytes on 2nd call + .handle resw 1 ; handle for upcall + ; .timeStamp resw 4 ; 64-bit RDTSC value + .destinAdr resb 6 ; packet destination address + .sourceAdr resb 6 ; packet source address + .protocol resw 1 ; packet protocol number + .rxBuffer resb ETH_MTU ; RX buffer +endstruc + +;------------------------------------------- + +[org 0] ; assemble to .bin file + +_rxOutOfs dw offset _pktRxBuf ; ring buffer offsets +_rxInOfs dw offset _pktRxBuf ; into _pktRxBuf +_pktDrop dw 0,0 ; packet drop counter +_pktTemp resb 20 ; temp work area +_pktTxBuf resb (ETH_MAX) ; TX buffer +_pktRxBuf resb (RX_SIZE*NUM_RX_BUF) ; RX structures + LAST_OFS equ $ + +screenSeg dw 0B800h +newInOffset dw 0 + +fanChars db '-\|/' +fanIndex dw 0 + +%macro SHOW_RX 0 + push es + push bx + mov bx, [screenSeg] + mov es, bx ;; r-mode segment of colour screen + mov di, 158 ;; upper right corner - 1 + mov bx, [fanIndex] + mov al, [fanChars+bx] ;; get write char + mov ah, 15 ;; and white colour + cld ;; Needed? + stosw ;; write to screen at ES:EDI + inc word [fanIndex] ;; update next index + and word [fanIndex], 3 + pop bx + pop es +%endmacro + +;PutTimeStamp +; rdtsc +; mov [si].timeStamp, eax +; mov [si+4].timeStamp, edx +; ret + + +;------------------------------------------------------------------------ +; +; This routine gets called by the packet driver twice: +; 1st time (AX=0) it requests an address where to put the packet +; +; 2nd time (AX=1) the packet has been copied to this location (DS:SI) +; BX has client handle (stored in RX_ELEMENT.handle). +; CX has # of bytes in packet on both call. They should be equal. +; A test for equality is done by putting CX in _pktRxBuf [n].firstCount +; and _pktRxBuf[n].secondCount, and CL on first call in +; _pktRxBuf[n].rxBuffer[CX]. These values are checked in "PktReceive" +; (PKTDRVR.C) +; +;--------------------------------------------------------------------- + +_PktReceiver: + pushf + cli ; no distraction wanted ! + push ds + push bx + mov bx, cs + mov ds, bx + mov es, bx ; ES = DS = CS or seg _DATA + pop bx ; restore handle + + cmp ax, 0 ; first call? (AX=0) + jne @post ; AX=1: second call, do post process + +%ifdef DEBUG + SHOW_RX ; show that a packet is received +%endif + + cmp cx, ETH_MAX ; size OK ? + ja @skip ; no, too big + + mov ax, [_rxInOfs] + add ax, RX_SIZE + cmp ax, LAST_OFS + jb @noWrap + mov ax, offset _pktRxBuf +@noWrap: + cmp ax, [_rxOutOfs] + je @dump + mov di, [_rxInOfs] ; ES:DI -> _pktRxBuf[n] + mov [newInOffset], ax + + mov [di], cx ; remember firstCount. + mov [di+4], bx ; remember handle. + add di, 6 ; ES:DI -> _pktRxBuf[n].destinAdr + pop ds + popf + retf ; far return to driver with ES:DI + +@dump: add word [_pktDrop+0], 1 ; discard the packet on 1st call + adc word [_pktDrop+2], 0 ; increment packets lost + +@skip: xor di, di ; return ES:DI = NIL pointer + xor ax, ax + mov es, ax + pop ds + popf + retf + +@post: or si, si ; DS:SI->_pktRxBuf[n][n].destinAdr + jz @discard ; make sure we don't use NULL-pointer + + ; + ; push si + ; call bpf_filter_match ; run the filter here some day + ; pop si + ; cmp ax, 0 + ; je @discard + + mov [si-6+2], cx ; store _pktRxBuf[n].secondCount + mov ax, [newInOffset] + mov [_rxInOfs], ax ; update _pktRxBuf input offset + + ; call PutTimeStamp + +@discard: + pop ds + popf + retf + +_pktRxEnd db 0 ; marker for end of r-mode code/data + +END + diff --git a/msdos/pktdrvr.c b/msdos/pktdrvr.c new file mode 100644 index 0000000..cd22ee6 --- /dev/null +++ b/msdos/pktdrvr.c @@ -0,0 +1,1436 @@ +/* + * File.........: pktdrvr.c + * + * Responsible..: Gisle Vanem, giva@bgnett.no + * + * Created......: 26.Sept 1995 + * + * Description..: Packet-driver interface for 16/32-bit C : + * Borland C/C++ 3.0+ small/large model + * Watcom C/C++ 11+, DOS4GW flat model + * Metaware HighC 3.1+ and PharLap 386|DosX + * GNU C/C++ 2.7+ and djgpp 2.x extender + * + * References...: PC/TCP Packet driver Specification. rev 1.09 + * FTP Software Inc. + * + */ + +#include +#include +#include +#include + +#include "pcap-dos.h" +#include "pcap-int.h" +#include "msdos/pktdrvr.h" + +#if (DOSX) +#define NUM_RX_BUF 32 /* # of buffers in Rx FIFO queue */ +#else +#define NUM_RX_BUF 10 +#endif + +#define DIM(x) (sizeof((x)) / sizeof(x[0])) +#define PUTS(s) do { \ + if (!pktInfo.quiet) \ + pktInfo.error ? \ + printf ("%s: %s\n", s, pktInfo.error) : \ + printf ("%s\n", pktInfo.error = s); \ + } while (0) + +#if defined(__HIGHC__) + extern UINT _mwenv; + +#elif defined(__DJGPP__) + #include + #include + #include + #include + #include + +#elif defined(__WATCOMC__) + #include + #include + extern char _Extender; + +#else + extern void far PktReceiver (void); +#endif + + +#if (DOSX & (DJGPP|DOS4GW)) + #include + + struct DPMI_regs { + DWORD r_di; + DWORD r_si; + DWORD r_bp; + DWORD reserved; + DWORD r_bx; + DWORD r_dx; + DWORD r_cx; + DWORD r_ax; + WORD r_flags; + WORD r_es, r_ds, r_fs, r_gs; + WORD r_ip, r_cs, r_sp, r_ss; + }; + + /* Data located in a real-mode segment. This becomes far at runtime + */ + typedef struct { /* must match data/code in pkt_rx1.s */ + WORD _rxOutOfs; + WORD _rxInOfs; + DWORD _pktDrop; + BYTE _pktTemp [20]; + TX_ELEMENT _pktTxBuf[1]; + RX_ELEMENT _pktRxBuf[NUM_RX_BUF]; + WORD _dummy[2]; /* screenSeg,newInOffset */ + BYTE _fanChars[4]; + WORD _fanIndex; + BYTE _PktReceiver[15]; /* starts on a paragraph (16byte) */ + } PktRealStub; + #include + + static BYTE real_stub_array [] = { + #include "pkt_stub.inc" /* generated opcode array */ + }; + + #define rxOutOfs offsetof (PktRealStub,_rxOutOfs) + #define rxInOfs offsetof (PktRealStub,_rxInOfs) + #define PktReceiver offsetof (PktRealStub,_PktReceiver [para_skip]) + #define pktDrop offsetof (PktRealStub,_pktDrop) + #define pktTemp offsetof (PktRealStub,_pktTemp) + #define pktTxBuf offsetof (PktRealStub,_pktTxBuf) + #define FIRST_RX_BUF offsetof (PktRealStub,_pktRxBuf [0]) + #define LAST_RX_BUF offsetof (PktRealStub,_pktRxBuf [NUM_RX_BUF-1]) + +#else + extern WORD rxOutOfs; /* offsets into pktRxBuf FIFO queue */ + extern WORD rxInOfs; + extern DWORD pktDrop; /* # packets dropped in PktReceiver() */ + extern BYTE pktRxEnd; /* marks the end of r-mode code/data */ + + extern RX_ELEMENT pktRxBuf [NUM_RX_BUF]; /* PktDrvr Rx buffers */ + extern TX_ELEMENT pktTxBuf; /* PktDrvr Tx buffer */ + extern char pktTemp[20]; /* PktDrvr temp area */ + + #define FIRST_RX_BUF (WORD) &pktRxBuf [0] + #define LAST_RX_BUF (WORD) &pktRxBuf [NUM_RX_BUF-1] +#endif + + +#ifdef __BORLANDC__ /* Use Borland's inline functions */ + #define memcpy __memcpy__ + #define memcmp __memcmp__ + #define memset __memset__ +#endif + + +#if (DOSX & PHARLAP) + extern void PktReceiver (void); /* in pkt_rx0.asm */ + static int RealCopy (ULONG, ULONG, REALPTR*, FARPTR*, USHORT*); + + #undef FP_SEG + #undef FP_OFF + #define FP_OFF(x) ((WORD)(x)) + #define FP_SEG(x) ((WORD)(realBase >> 16)) + #define DOS_ADDR(s,o) (((DWORD)(s) << 16) + (WORD)(o)) + #define r_ax eax + #define r_bx ebx + #define r_dx edx + #define r_cx ecx + #define r_si esi + #define r_di edi + #define r_ds ds + #define r_es es + LOCAL FARPTR protBase; + LOCAL REALPTR realBase; + LOCAL WORD realSeg; /* DOS para-address of allocated area */ + LOCAL SWI_REGS reg; + + static WORD _far *rxOutOfsFp, *rxInOfsFp; + +#elif (DOSX & DJGPP) + static _go32_dpmi_seginfo rm_mem; + static __dpmi_regs reg; + static DWORD realBase; + static int para_skip = 0; + + #define DOS_ADDR(s,o) (((WORD)(s) << 4) + (o)) + #define r_ax x.ax + #define r_bx x.bx + #define r_dx x.dx + #define r_cx x.cx + #define r_si x.si + #define r_di x.di + #define r_ds x.ds + #define r_es x.es + +#elif (DOSX & DOS4GW) + LOCAL struct DPMI_regs reg; + LOCAL WORD rm_base_seg, rm_base_sel; + LOCAL DWORD realBase; + LOCAL int para_skip = 0; + + LOCAL DWORD dpmi_get_real_vector (int intr); + LOCAL WORD dpmi_real_malloc (int size, WORD *selector); + LOCAL void dpmi_real_free (WORD selector); + #define DOS_ADDR(s,o) (((DWORD)(s) << 4) + (WORD)(o)) + +#else /* real-mode Borland etc. */ + static struct { + WORD r_ax, r_bx, r_cx, r_dx, r_bp; + WORD r_si, r_di, r_ds, r_es, r_flags; + } reg; +#endif + +#ifdef __HIGHC__ + #pragma Alias (pktDrop, "_pktDrop") + #pragma Alias (pktRxBuf, "_pktRxBuf") + #pragma Alias (pktTxBuf, "_pktTxBuf") + #pragma Alias (pktTemp, "_pktTemp") + #pragma Alias (rxOutOfs, "_rxOutOfs") + #pragma Alias (rxInOfs, "_rxInOfs") + #pragma Alias (pktRxEnd, "_pktRxEnd") + #pragma Alias (PktReceiver,"_PktReceiver") +#endif + + +PUBLIC PKT_STAT pktStat; /* statistics for packets */ +PUBLIC PKT_INFO pktInfo; /* packet-driver information */ + +PUBLIC PKT_RX_MODE receiveMode = PDRX_DIRECT; +PUBLIC ETHER myAddress = { 0, 0, 0, 0, 0, 0 }; +PUBLIC ETHER ethBroadcast = { 255,255,255,255,255,255 }; + +LOCAL struct { /* internal statistics */ + DWORD tooSmall; /* size < ETH_MIN */ + DWORD tooLarge; /* size > ETH_MAX */ + DWORD badSync; /* count_1 != count_2 */ + DWORD wrongHandle; /* upcall to wrong handle */ + } intStat; + +/***************************************************************************/ + +PUBLIC const char *PktGetErrorStr (int errNum) +{ + static const char *errStr[] = { + "", + "Invalid handle number", + "No interfaces of specified class found", + "No interfaces of specified type found", + "No interfaces of specified number found", + "Bad packet type specified", + "Interface does not support multicast", + "Packet driver cannot terminate", + "Invalid receiver mode specified", + "Insufficient memory space", + "Type previously accessed, and not released", + "Command out of range, or not implemented", + "Cannot send packet (usually hardware error)", + "Cannot change hardware address ( > 1 handle open)", + "Hardware address has bad length or format", + "Cannot reset interface (more than 1 handle open)", + "Bad Check-sum", + "Bad size", + "Bad sync" , + "Source hit" + }; + + if (errNum < 0 || errNum >= DIM(errStr)) + return ("Unknown driver error."); + return (errStr [errNum]); +} + +/**************************************************************************/ + +PUBLIC const char *PktGetClassName (WORD class) +{ + switch (class) + { + case PD_ETHER: + return ("DIX-Ether"); + case PD_PRONET10: + return ("ProNET-10"); + case PD_IEEE8025: + return ("IEEE 802.5"); + case PD_OMNINET: + return ("OmniNet"); + case PD_APPLETALK: + return ("AppleTalk"); + case PD_SLIP: + return ("SLIP"); + case PD_STARTLAN: + return ("StartLAN"); + case PD_ARCNET: + return ("ArcNet"); + case PD_AX25: + return ("AX.25"); + case PD_KISS: + return ("KISS"); + case PD_IEEE8023_2: + return ("IEEE 802.3 w/802.2 hdr"); + case PD_FDDI8022: + return ("FDDI w/802.2 hdr"); + case PD_X25: + return ("X.25"); + case PD_LANstar: + return ("LANstar"); + case PD_PPP: + return ("PPP"); + default: + return ("unknown"); + } +} + +/**************************************************************************/ + +PUBLIC char const *PktRXmodeStr (PKT_RX_MODE mode) +{ + static const char *modeStr [] = { + "Receiver turned off", + "Receive only directly addressed packets", + "Receive direct & broadcast packets", + "Receive direct,broadcast and limited multicast packets", + "Receive direct,broadcast and all multicast packets", + "Receive all packets (promiscuouos mode)" + }; + + if (mode > DIM(modeStr)) + return ("??"); + return (modeStr [mode-1]); +} + +/**************************************************************************/ + +LOCAL __inline BOOL PktInterrupt (void) +{ + BOOL okay; + +#if (DOSX & PHARLAP) + _dx_real_int ((UINT)pktInfo.intr, ®); + okay = ((reg.flags & 1) == 0); /* OK if carry clear */ + +#elif (DOSX & DJGPP) + __dpmi_int ((int)pktInfo.intr, ®); + okay = ((reg.x.flags & 1) == 0); + +#elif (DOSX & DOS4GW) + union REGS r; + struct SREGS s; + + memset (&r, 0, sizeof(r)); + segread (&s); + r.w.ax = 0x300; + r.x.ebx = pktInfo.intr; + r.w.cx = 0; + s.es = FP_SEG (®); + r.x.edi = FP_OFF (®); + reg.r_flags = 0; + reg.r_ss = reg.r_sp = 0; /* DPMI host provides stack */ + + int386x (0x31, &r, &r, &s); + okay = (!r.w.cflag); + +#else + reg.r_flags = 0; + intr (pktInfo.intr, (struct REGPACK*)®); + okay = ((reg.r_flags & 1) == 0); +#endif + + if (okay) + pktInfo.error = NULL; + else pktInfo.error = PktGetErrorStr (reg.r_dx >> 8); + return (okay); +} + +/**************************************************************************/ + +/* + * Search for packet driver at interrupt 60h through 80h. If ASCIIZ + * string "PKT DRVR" found at offset 3 in the interrupt handler, return + * interrupt number, else return zero in pktInfo.intr + */ +PUBLIC BOOL PktSearchDriver (void) +{ + BYTE intr = 0x20; + BOOL found = FALSE; + + while (!found && intr < 0xFF) + { + static char str[12]; /* 3 + strlen("PKT DRVR") */ + static char pktStr[9] = "PKT DRVR"; /* ASCIIZ string at ofs 3 */ + DWORD rp; /* in interrupt routine */ + +#if (DOSX & PHARLAP) + _dx_rmiv_get (intr, &rp); + ReadRealMem (&str, (REALPTR)rp, sizeof(str)); + +#elif (DOSX & DJGPP) + __dpmi_raddr realAdr; + __dpmi_get_real_mode_interrupt_vector (intr, &realAdr); + rp = (realAdr.segment << 4) + realAdr.offset16; + dosmemget (rp, sizeof(str), &str); + +#elif (DOSX & DOS4GW) + rp = dpmi_get_real_vector (intr); + memcpy (&str, (void*)rp, sizeof(str)); + +#else + _fmemcpy (&str, getvect(intr), sizeof(str)); +#endif + + found = memcmp (&str[3],&pktStr,sizeof(pktStr)) == 0; + intr++; + } + pktInfo.intr = (found ? intr-1 : 0); + return (found); +} + + +/**************************************************************************/ + +static BOOL PktSetAccess (void) +{ + reg.r_ax = 0x0200 + pktInfo.class; + reg.r_bx = 0xFFFF; + reg.r_dx = 0; + reg.r_cx = 0; + +#if (DOSX & PHARLAP) + reg.ds = 0; + reg.esi = 0; + reg.es = RP_SEG (realBase); + reg.edi = (WORD) &PktReceiver; + +#elif (DOSX & DJGPP) + reg.x.ds = 0; + reg.x.si = 0; + reg.x.es = rm_mem.rm_segment; + reg.x.di = PktReceiver; + +#elif (DOSX & DOS4GW) + reg.r_ds = 0; + reg.r_si = 0; + reg.r_es = rm_base_seg; + reg.r_di = PktReceiver; + +#else + reg.r_ds = 0; + reg.r_si = 0; + reg.r_es = FP_SEG (&PktReceiver); + reg.r_di = FP_OFF (&PktReceiver); +#endif + + if (!PktInterrupt()) + return (FALSE); + + pktInfo.handle = reg.r_ax; + return (TRUE); +} + +/**************************************************************************/ + +PUBLIC BOOL PktReleaseHandle (WORD handle) +{ + reg.r_ax = 0x0300; + reg.r_bx = handle; + return PktInterrupt(); +} + +/**************************************************************************/ + +PUBLIC BOOL PktTransmit (const void *eth, int len) +{ + if (len > ETH_MTU) + return (FALSE); + + reg.r_ax = 0x0400; /* Function 4, send pkt */ + reg.r_cx = len; /* total size of frame */ + +#if (DOSX & DJGPP) + dosmemput (eth, len, realBase+pktTxBuf); + reg.x.ds = rm_mem.rm_segment; /* DOS data segment and */ + reg.x.si = pktTxBuf; /* DOS offset to buffer */ + +#elif (DOSX & DOS4GW) + memcpy ((void*)(realBase+pktTxBuf), eth, len); + reg.r_ds = rm_base_seg; + reg.r_si = pktTxBuf; + +#elif (DOSX & PHARLAP) + memcpy (&pktTxBuf, eth, len); + reg.r_ds = FP_SEG (&pktTxBuf); + reg.r_si = FP_OFF (&pktTxBuf); + +#else + reg.r_ds = FP_SEG (eth); + reg.r_si = FP_OFF (eth); +#endif + + return PktInterrupt(); +} + +/**************************************************************************/ + +#if (DOSX & (DJGPP|DOS4GW)) +LOCAL __inline BOOL CheckElement (RX_ELEMENT *rx) +#else +LOCAL __inline BOOL CheckElement (RX_ELEMENT _far *rx) +#endif +{ + WORD count_1, count_2; + + /* + * We got an upcall to the same RMCB with wrong handle. + * This can happen if we failed to release handle at program exit + */ + if (rx->handle != pktInfo.handle) + { + pktInfo.error = "Wrong handle"; + intStat.wrongHandle++; + PktReleaseHandle (rx->handle); + return (FALSE); + } + count_1 = rx->firstCount; + count_2 = rx->secondCount; + + if (count_1 != count_2) + { + pktInfo.error = "Bad sync"; + intStat.badSync++; + return (FALSE); + } + if (count_1 > ETH_MAX) + { + pktInfo.error = "Large esize"; + intStat.tooLarge++; + return (FALSE); + } +#if 0 + if (count_1 < ETH_MIN) + { + pktInfo.error = "Small esize"; + intStat.tooSmall++; + return (FALSE); + } +#endif + return (TRUE); +} + +/**************************************************************************/ + +PUBLIC BOOL PktTerminHandle (WORD handle) +{ + reg.r_ax = 0x0500; + reg.r_bx = handle; + return PktInterrupt(); +} + +/**************************************************************************/ + +PUBLIC BOOL PktResetInterface (WORD handle) +{ + reg.r_ax = 0x0700; + reg.r_bx = handle; + return PktInterrupt(); +} + +/**************************************************************************/ + +PUBLIC BOOL PktSetReceiverMode (PKT_RX_MODE mode) +{ + if (pktInfo.class == PD_SLIP || pktInfo.class == PD_PPP) + return (TRUE); + + reg.r_ax = 0x1400; + reg.r_bx = pktInfo.handle; + reg.r_cx = (WORD)mode; + + if (!PktInterrupt()) + return (FALSE); + + receiveMode = mode; + return (TRUE); +} + +/**************************************************************************/ + +PUBLIC BOOL PktGetReceiverMode (PKT_RX_MODE *mode) +{ + reg.r_ax = 0x1500; + reg.r_bx = pktInfo.handle; + + if (!PktInterrupt()) + return (FALSE); + + *mode = reg.r_ax; + return (TRUE); +} + +/**************************************************************************/ + +static PKT_STAT initialStat; /* statistics at startup */ +static BOOL resetStat = FALSE; /* statistics reset ? */ + +PUBLIC BOOL PktGetStatistics (WORD handle) +{ + reg.r_ax = 0x1800; + reg.r_bx = handle; + + if (!PktInterrupt()) + return (FALSE); + +#if (DOSX & PHARLAP) + ReadRealMem (&pktStat, DOS_ADDR(reg.ds,reg.esi), sizeof(pktStat)); + +#elif (DOSX & DJGPP) + dosmemget (DOS_ADDR(reg.x.ds,reg.x.si), sizeof(pktStat), &pktStat); + +#elif (DOSX & DOS4GW) + memcpy (&pktStat, (void*)DOS_ADDR(reg.r_ds,reg.r_si), sizeof(pktStat)); + +#else + _fmemcpy (&pktStat, MK_FP(reg.r_ds,reg.r_si), sizeof(pktStat)); +#endif + + return (TRUE); +} + +/**************************************************************************/ + +PUBLIC BOOL PktSessStatistics (WORD handle) +{ + if (!PktGetStatistics(pktInfo.handle)) + return (FALSE); + + if (resetStat) + { + pktStat.inPackets -= initialStat.inPackets; + pktStat.outPackets -= initialStat.outPackets; + pktStat.inBytes -= initialStat.inBytes; + pktStat.outBytes -= initialStat.outBytes; + pktStat.inErrors -= initialStat.inErrors; + pktStat.outErrors -= initialStat.outErrors; + pktStat.outErrors -= initialStat.outErrors; + pktStat.lost -= initialStat.lost; + } + return (TRUE); +} + +/**************************************************************************/ + +PUBLIC BOOL PktResetStatistics (WORD handle) +{ + if (!PktGetStatistics(pktInfo.handle)) + return (FALSE); + + memcpy (&initialStat, &pktStat, sizeof(initialStat)); + resetStat = TRUE; + return (TRUE); +} + +/**************************************************************************/ + +PUBLIC BOOL PktGetAddress (ETHER *addr) +{ + reg.r_ax = 0x0600; + reg.r_bx = pktInfo.handle; + reg.r_cx = sizeof (*addr); + +#if (DOSX & DJGPP) + reg.x.es = rm_mem.rm_segment; + reg.x.di = pktTemp; +#elif (DOSX & DOS4GW) + reg.r_es = rm_base_seg; + reg.r_di = pktTemp; +#else + reg.r_es = FP_SEG (&pktTemp); + reg.r_di = FP_OFF (&pktTemp); /* ES:DI = address for result */ +#endif + + if (!PktInterrupt()) + return (FALSE); + +#if (DOSX & PHARLAP) + ReadRealMem (addr, realBase + (WORD)&pktTemp, sizeof(*addr)); + +#elif (DOSX & DJGPP) + dosmemget (realBase+pktTemp, sizeof(*addr), addr); + +#elif (DOSX & DOS4GW) + memcpy (addr, (void*)(realBase+pktTemp), sizeof(*addr)); + +#else + memcpy ((void*)addr, &pktTemp, sizeof(*addr)); +#endif + + return (TRUE); +} + +/**************************************************************************/ + +PUBLIC BOOL PktSetAddress (const ETHER *addr) +{ + /* copy addr to real-mode scrath area */ + +#if (DOSX & PHARLAP) + WriteRealMem (realBase + (WORD)&pktTemp, (void*)addr, sizeof(*addr)); + +#elif (DOSX & DJGPP) + dosmemput (addr, sizeof(*addr), realBase+pktTemp); + +#elif (DOSX & DOS4GW) + memcpy ((void*)(realBase+pktTemp), addr, sizeof(*addr)); + +#else + memcpy (&pktTemp, (void*)addr, sizeof(*addr)); +#endif + + reg.r_ax = 0x1900; + reg.r_cx = sizeof (*addr); /* address length */ + +#if (DOSX & DJGPP) + reg.x.es = rm_mem.rm_segment; /* DOS offset to param */ + reg.x.di = pktTemp; /* DOS segment to param */ +#elif (DOSX & DOS4GW) + reg.r_es = rm_base_seg; + reg.r_di = pktTemp; +#else + reg.r_es = FP_SEG (&pktTemp); + reg.r_di = FP_OFF (&pktTemp); +#endif + + return PktInterrupt(); +} + +/**************************************************************************/ + +PUBLIC BOOL PktGetDriverInfo (void) +{ + pktInfo.majVer = 0; + pktInfo.minVer = 0; + memset (&pktInfo.name, 0, sizeof(pktInfo.name)); + reg.r_ax = 0x01FF; + reg.r_bx = 0; + + if (!PktInterrupt()) + return (FALSE); + + pktInfo.number = reg.r_cx & 0xFF; + pktInfo.class = reg.r_cx >> 8; +#if 0 + pktInfo.minVer = reg.r_bx % 10; + pktInfo.majVer = reg.r_bx / 10; +#else + pktInfo.majVer = reg.r_bx; // !! +#endif + pktInfo.funcs = reg.r_ax & 0xFF; + pktInfo.type = reg.r_dx & 0xFF; + +#if (DOSX & PHARLAP) + ReadRealMem (&pktInfo.name, DOS_ADDR(reg.ds,reg.esi), sizeof(pktInfo.name)); + +#elif (DOSX & DJGPP) + dosmemget (DOS_ADDR(reg.x.ds,reg.x.si), sizeof(pktInfo.name), &pktInfo.name); + +#elif (DOSX & DOS4GW) + memcpy (&pktInfo.name, (void*)DOS_ADDR(reg.r_ds,reg.r_si), sizeof(pktInfo.name)); + +#else + _fmemcpy (&pktInfo.name, MK_FP(reg.r_ds,reg.r_si), sizeof(pktInfo.name)); +#endif + return (TRUE); +} + +/**************************************************************************/ + +PUBLIC BOOL PktGetDriverParam (void) +{ + reg.r_ax = 0x0A00; + + if (!PktInterrupt()) + return (FALSE); + +#if (DOSX & PHARLAP) + ReadRealMem (&pktInfo.majVer, DOS_ADDR(reg.es,reg.edi), PKT_PARAM_SIZE); + +#elif (DOSX & DJGPP) + dosmemget (DOS_ADDR(reg.x.es,reg.x.di), PKT_PARAM_SIZE, &pktInfo.majVer); + +#elif (DOSX & DOS4GW) + memcpy (&pktInfo.majVer, (void*)DOS_ADDR(reg.r_es,reg.r_di), PKT_PARAM_SIZE); + +#else + _fmemcpy (&pktInfo.majVer, MK_FP(reg.r_es,reg.r_di), PKT_PARAM_SIZE); +#endif + return (TRUE); +} + +/**************************************************************************/ + +#if (DOSX & PHARLAP) + PUBLIC int PktReceive (BYTE *buf, int max) + { + WORD inOfs = *rxInOfsFp; + WORD outOfs = *rxOutOfsFp; + + if (outOfs != inOfs) + { + RX_ELEMENT _far *head = (RX_ELEMENT _far*)(protBase+outOfs); + int size, len = max; + + if (CheckElement(head)) + { + size = min (head->firstCount, sizeof(RX_ELEMENT)); + len = min (size, max); + _fmemcpy (buf, &head->destin, len); + } + else + size = -1; + + outOfs += sizeof (RX_ELEMENT); + if (outOfs > LAST_RX_BUF) + outOfs = FIRST_RX_BUF; + *rxOutOfsFp = outOfs; + return (size); + } + return (0); + } + + PUBLIC void PktQueueBusy (BOOL busy) + { + *rxOutOfsFp = busy ? (*rxInOfsFp + sizeof(RX_ELEMENT)) : *rxInOfsFp; + if (*rxOutOfsFp > LAST_RX_BUF) + *rxOutOfsFp = FIRST_RX_BUF; + *(DWORD _far*)(protBase + (WORD)&pktDrop) = 0; + } + + PUBLIC WORD PktBuffersUsed (void) + { + WORD inOfs = *rxInOfsFp; + WORD outOfs = *rxOutOfsFp; + + if (inOfs >= outOfs) + return (inOfs - outOfs) / sizeof(RX_ELEMENT); + return (NUM_RX_BUF - (outOfs - inOfs) / sizeof(RX_ELEMENT)); + } + + PUBLIC DWORD PktRxDropped (void) + { + return (*(DWORD _far*)(protBase + (WORD)&pktDrop)); + } + +#elif (DOSX & DJGPP) + PUBLIC int PktReceive (BYTE *buf, int max) + { + WORD ofs = _farpeekw (_dos_ds, realBase+rxOutOfs); + + if (ofs != _farpeekw (_dos_ds, realBase+rxInOfs)) + { + RX_ELEMENT head; + int size, len = max; + + head.firstCount = _farpeekw (_dos_ds, realBase+ofs); + head.secondCount = _farpeekw (_dos_ds, realBase+ofs+2); + head.handle = _farpeekw (_dos_ds, realBase+ofs+4); + + if (CheckElement(&head)) + { + size = min (head.firstCount, sizeof(RX_ELEMENT)); + len = min (size, max); + dosmemget (realBase+ofs+6, len, buf); + } + else + size = -1; + + ofs += sizeof (RX_ELEMENT); + if (ofs > LAST_RX_BUF) + _farpokew (_dos_ds, realBase+rxOutOfs, FIRST_RX_BUF); + else _farpokew (_dos_ds, realBase+rxOutOfs, ofs); + return (size); + } + return (0); + } + + PUBLIC void PktQueueBusy (BOOL busy) + { + WORD ofs; + + disable(); + ofs = _farpeekw (_dos_ds, realBase+rxInOfs); + if (busy) + ofs += sizeof (RX_ELEMENT); + + if (ofs > LAST_RX_BUF) + _farpokew (_dos_ds, realBase+rxOutOfs, FIRST_RX_BUF); + else _farpokew (_dos_ds, realBase+rxOutOfs, ofs); + _farpokel (_dos_ds, realBase+pktDrop, 0UL); + enable(); + } + + PUBLIC WORD PktBuffersUsed (void) + { + WORD inOfs, outOfs; + + disable(); + inOfs = _farpeekw (_dos_ds, realBase+rxInOfs); + outOfs = _farpeekw (_dos_ds, realBase+rxOutOfs); + enable(); + if (inOfs >= outOfs) + return (inOfs - outOfs) / sizeof(RX_ELEMENT); + return (NUM_RX_BUF - (outOfs - inOfs) / sizeof(RX_ELEMENT)); + } + + PUBLIC DWORD PktRxDropped (void) + { + return _farpeekl (_dos_ds, realBase+pktDrop); + } + +#elif (DOSX & DOS4GW) + PUBLIC int PktReceive (BYTE *buf, int max) + { + WORD ofs = *(WORD*) (realBase+rxOutOfs); + + if (ofs != *(WORD*) (realBase+rxInOfs)) + { + RX_ELEMENT head; + int size, len = max; + + head.firstCount = *(WORD*) (realBase+ofs); + head.secondCount = *(WORD*) (realBase+ofs+2); + head.handle = *(WORD*) (realBase+ofs+4); + + if (CheckElement(&head)) + { + size = min (head.firstCount, sizeof(RX_ELEMENT)); + len = min (size, max); + memcpy (buf, (const void*)(realBase+ofs+6), len); + } + else + size = -1; + + ofs += sizeof (RX_ELEMENT); + if (ofs > LAST_RX_BUF) + *(WORD*) (realBase+rxOutOfs) = FIRST_RX_BUF; + else *(WORD*) (realBase+rxOutOfs) = ofs; + return (size); + } + return (0); + } + + PUBLIC void PktQueueBusy (BOOL busy) + { + WORD ofs; + + _disable(); + ofs = *(WORD*) (realBase+rxInOfs); + if (busy) + ofs += sizeof (RX_ELEMENT); + + if (ofs > LAST_RX_BUF) + *(WORD*) (realBase+rxOutOfs) = FIRST_RX_BUF; + else *(WORD*) (realBase+rxOutOfs) = ofs; + *(DWORD*) (realBase+pktDrop) = 0UL; + _enable(); + } + + PUBLIC WORD PktBuffersUsed (void) + { + WORD inOfs, outOfs; + + _disable(); + inOfs = *(WORD*) (realBase+rxInOfs); + outOfs = *(WORD*) (realBase+rxOutOfs); + _enable(); + if (inOfs >= outOfs) + return (inOfs - outOfs) / sizeof(RX_ELEMENT); + return (NUM_RX_BUF - (outOfs - inOfs) / sizeof(RX_ELEMENT)); + } + + PUBLIC DWORD PktRxDropped (void) + { + return *(DWORD*) (realBase+pktDrop); + } + +#else /* real-mode small/large model */ + + PUBLIC int PktReceive (BYTE *buf, int max) + { + if (rxOutOfs != rxInOfs) + { + RX_ELEMENT far *head = (RX_ELEMENT far*) MK_FP (_DS,rxOutOfs); + int size, len = max; + + if (CheckElement(head)) + { + size = min (head->firstCount, sizeof(RX_ELEMENT)); + len = min (size, max); + _fmemcpy (buf, &head->destin, len); + } + else + size = -1; + + rxOutOfs += sizeof (RX_ELEMENT); + if (rxOutOfs > LAST_RX_BUF) + rxOutOfs = FIRST_RX_BUF; + return (size); + } + return (0); + } + + PUBLIC void PktQueueBusy (BOOL busy) + { + rxOutOfs = busy ? (rxInOfs + sizeof(RX_ELEMENT)) : rxInOfs; + if (rxOutOfs > LAST_RX_BUF) + rxOutOfs = FIRST_RX_BUF; + pktDrop = 0L; + } + + PUBLIC WORD PktBuffersUsed (void) + { + WORD inOfs = rxInOfs; + WORD outOfs = rxOutOfs; + + if (inOfs >= outOfs) + return ((inOfs - outOfs) / sizeof(RX_ELEMENT)); + return (NUM_RX_BUF - (outOfs - inOfs) / sizeof(RX_ELEMENT)); + } + + PUBLIC DWORD PktRxDropped (void) + { + return (pktDrop); + } +#endif + +/**************************************************************************/ + +LOCAL __inline void PktFreeMem (void) +{ +#if (DOSX & PHARLAP) + if (realSeg) + { + _dx_real_free (realSeg); + realSeg = 0; + } +#elif (DOSX & DJGPP) + if (rm_mem.rm_segment) + { + unsigned ofs; /* clear the DOS-mem to prevent further upcalls */ + + for (ofs = 0; ofs < 16 * rm_mem.size / 4; ofs += 4) + _farpokel (_dos_ds, realBase + ofs, 0); + _go32_dpmi_free_dos_memory (&rm_mem); + rm_mem.rm_segment = 0; + } +#elif (DOSX & DOS4GW) + if (rm_base_sel) + { + dpmi_real_free (rm_base_sel); + rm_base_sel = 0; + } +#endif +} + +/**************************************************************************/ + +PUBLIC BOOL PktExitDriver (void) +{ + if (pktInfo.handle) + { + if (!PktSetReceiverMode(PDRX_BROADCAST)) + PUTS ("Error restoring receiver mode."); + + if (!PktReleaseHandle(pktInfo.handle)) + PUTS ("Error releasing PKT-DRVR handle."); + + PktFreeMem(); + pktInfo.handle = 0; + } + + if (pcap_pkt_debug >= 1) + printf ("Internal stats: too-small %lu, too-large %lu, bad-sync %lu, " + "wrong-handle %lu\n", + intStat.tooSmall, intStat.tooLarge, + intStat.badSync, intStat.wrongHandle); + return (TRUE); +} + +#if (DOSX & (DJGPP|DOS4GW)) +static void dump_pkt_stub (void) +{ + int i; + + fprintf (stderr, "PktReceiver %lu, pkt_stub[PktReceiver] =\n", + PktReceiver); + for (i = 0; i < 15; i++) + fprintf (stderr, "%02X, ", real_stub_array[i+PktReceiver]); + fputs ("\n", stderr); +} +#endif + +/* + * Front end initialization routine + */ +PUBLIC BOOL PktInitDriver (PKT_RX_MODE mode) +{ + PKT_RX_MODE rxMode; + BOOL writeInfo = (pcap_pkt_debug >= 3); + + pktInfo.quiet = (pcap_pkt_debug < 3); + +#if (DOSX & PHARLAP) && defined(__HIGHC__) + if (_mwenv != 2) + { + fprintf (stderr, "Only Pharlap DOS extender supported.\n"); + return (FALSE); + } +#endif + +#if (DOSX & PHARLAP) && defined(__WATCOMC__) + if (_Extender != 1) + { + fprintf (stderr, "Only DOS4GW style extenders supported.\n"); + return (FALSE); + } +#endif + + if (!PktSearchDriver()) + { + PUTS ("Packet driver not found."); + PktFreeMem(); + return (FALSE); + } + + if (!PktGetDriverInfo()) + { + PUTS ("Error getting pkt-drvr information."); + PktFreeMem(); + return (FALSE); + } + +#if (DOSX & PHARLAP) + if (RealCopy((ULONG)&rxOutOfs, (ULONG)&pktRxEnd, + &realBase, &protBase, (USHORT*)&realSeg)) + { + rxOutOfsFp = (WORD _far *) (protBase + (WORD) &rxOutOfs); + rxInOfsFp = (WORD _far *) (protBase + (WORD) &rxInOfs); + *rxOutOfsFp = FIRST_RX_BUF; + *rxInOfsFp = FIRST_RX_BUF; + } + else + { + PUTS ("Cannot allocate real-mode stub."); + return (FALSE); + } + +#elif (DOSX & (DJGPP|DOS4GW)) + if (sizeof(real_stub_array) > 0xFFFF) + { + fprintf (stderr, "`real_stub_array[]' too big.\n"); + return (FALSE); + } +#if (DOSX & DJGPP) + rm_mem.size = (sizeof(real_stub_array) + 15) / 16; + + if (_go32_dpmi_allocate_dos_memory(&rm_mem) || rm_mem.rm_offset != 0) + { + PUTS ("real-mode init failed."); + return (FALSE); + } + realBase = (rm_mem.rm_segment << 4); + dosmemput (&real_stub_array, sizeof(real_stub_array), realBase); + _farpokel (_dos_ds, realBase+rxOutOfs, FIRST_RX_BUF); + _farpokel (_dos_ds, realBase+rxInOfs, FIRST_RX_BUF); + +#elif (DOSX & DOS4GW) + rm_base_seg = dpmi_real_malloc (sizeof(real_stub_array), &rm_base_sel); + if (!rm_base_seg) + { + PUTS ("real-mode init failed."); + return (FALSE); + } + realBase = (rm_base_seg << 4); + memcpy ((void*)realBase, &real_stub_array, sizeof(real_stub_array)); + *(WORD*) (realBase+rxOutOfs) = FIRST_RX_BUF; + *(WORD*) (realBase+rxInOfs) = FIRST_RX_BUF; + +#endif + { + int pushf = PktReceiver; + + while (real_stub_array[pushf++] != 0x9C && /* pushf */ + real_stub_array[pushf] != 0xFA) /* cli */ + { + if (++para_skip > 16) + { + fprintf (stderr, "Something wrong with `pkt_stub.inc'.\n"); + para_skip = 0; + dump_pkt_stub(); + return (FALSE); + } + } + if (*(WORD*)(real_stub_array + offsetof(PktRealStub,_dummy)) != 0xB800) + { + fprintf (stderr, "`real_stub_array[]' is misaligned.\n"); + return (FALSE); + } + } + + if (pcap_pkt_debug > 2) + dump_pkt_stub(); + +#else + rxOutOfs = FIRST_RX_BUF; + rxInOfs = FIRST_RX_BUF; +#endif + + if (!PktSetAccess()) + { + PUTS ("Error setting pkt-drvr access."); + PktFreeMem(); + return (FALSE); + } + + if (!PktGetAddress(&myAddress)) + { + PUTS ("Error fetching adapter address."); + PktFreeMem(); + return (FALSE); + } + + if (!PktSetReceiverMode(mode)) + { + PUTS ("Error setting receiver mode."); + PktFreeMem(); + return (FALSE); + } + + if (!PktGetReceiverMode(&rxMode)) + { + PUTS ("Error getting receiver mode."); + PktFreeMem(); + return (FALSE); + } + + if (writeInfo) + printf ("Pkt-driver information:\n" + " Version : %d.%d\n" + " Name : %.15s\n" + " Class : %u (%s)\n" + " Type : %u\n" + " Number : %u\n" + " Funcs : %u\n" + " Intr : %Xh\n" + " Handle : %u\n" + " Extended : %s\n" + " Hi-perf : %s\n" + " RX mode : %s\n" + " Eth-addr : %02X:%02X:%02X:%02X:%02X:%02X\n", + + pktInfo.majVer, pktInfo.minVer, pktInfo.name, + pktInfo.class, PktGetClassName(pktInfo.class), + pktInfo.type, pktInfo.number, + pktInfo.funcs, pktInfo.intr, pktInfo.handle, + pktInfo.funcs == 2 || pktInfo.funcs == 6 ? "Yes" : "No", + pktInfo.funcs == 5 || pktInfo.funcs == 6 ? "Yes" : "No", + PktRXmodeStr(rxMode), + myAddress[0], myAddress[1], myAddress[2], + myAddress[3], myAddress[4], myAddress[5]); + +#if defined(DEBUG) && (DOSX & PHARLAP) + if (writeInfo) + { + DWORD rAdr = realBase + (WORD)&PktReceiver; + unsigned sel, ofs; + + printf ("\nReceiver at %04X:%04X\n", RP_SEG(rAdr), RP_OFF(rAdr)); + printf ("Realbase = %04X:%04X\n", RP_SEG(realBase),RP_OFF(realBase)); + + sel = _FP_SEG (protBase); + ofs = _FP_OFF (protBase); + printf ("Protbase = %04X:%08X\n", sel,ofs); + printf ("RealSeg = %04X\n", realSeg); + + sel = _FP_SEG (rxOutOfsFp); + ofs = _FP_OFF (rxOutOfsFp); + printf ("rxOutOfsFp = %04X:%08X\n", sel,ofs); + + sel = _FP_SEG (rxInOfsFp); + ofs = _FP_OFF (rxInOfsFp); + printf ("rxInOfsFp = %04X:%08X\n", sel,ofs); + + printf ("Ready: *rxOutOfsFp = %04X *rxInOfsFp = %04X\n", + *rxOutOfsFp, *rxInOfsFp); + + PktQueueBusy (TRUE); + printf ("Busy: *rxOutOfsFp = %04X *rxInOfsFp = %04X\n", + *rxOutOfsFp, *rxInOfsFp); + } +#endif + + memset (&pktStat, 0, sizeof(pktStat)); /* clear statistics */ + PktQueueBusy (TRUE); + return (TRUE); +} + + +/* + * DPMI functions only for Watcom + DOS4GW extenders + */ +#if (DOSX & DOS4GW) +LOCAL DWORD dpmi_get_real_vector (int intr) +{ + union REGS r; + + r.x.eax = 0x200; + r.x.ebx = (DWORD) intr; + int386 (0x31, &r, &r); + return ((r.w.cx << 4) + r.w.dx); +} + +LOCAL WORD dpmi_real_malloc (int size, WORD *selector) +{ + union REGS r; + + r.x.eax = 0x0100; /* DPMI allocate DOS memory */ + r.x.ebx = (size + 15) / 16; /* Number of paragraphs requested */ + int386 (0x31, &r, &r); + if (r.w.cflag & 1) + return (0); + + *selector = r.w.dx; + return (r.w.ax); /* Return segment address */ +} + +LOCAL void dpmi_real_free (WORD selector) +{ + union REGS r; + + r.x.eax = 0x101; /* DPMI free DOS memory */ + r.x.ebx = selector; /* Selector to free */ + int386 (0x31, &r, &r); +} +#endif + + +#if defined(DOSX) && (DOSX & PHARLAP) +/* + * Description: + * This routine allocates conventional memory for the specified block + * of code (which must be within the first 64K of the protected mode + * program segment) and copies the code to it. + * + * The caller should free up the conventional memory block when it + * is done with the conventional memory. + * + * NOTE THIS ROUTINE REQUIRES 386|DOS-EXTENDER 3.0 OR LATER. + * + * Calling arguments: + * start_offs start of real mode code in program segment + * end_offs 1 byte past end of real mode code in program segment + * real_basep returned; real mode ptr to use as a base for the + * real mode code (eg, to get the real mode FAR + * addr of a function foo(), take + * real_basep + (ULONG) foo). + * This pointer is constructed such that + * offsets within the real mode segment are + * the same as the link-time offsets in the + * protected mode program segment + * prot_basep returned; prot mode ptr to use as a base for getting + * to the conventional memory, also constructed + * so that adding the prot mode offset of a + * function or variable to the base gets you a + * ptr to the function or variable in the + * conventional memory block. + * rmem_adrp returned; real mode para addr of allocated + * conventional memory block, to be used to free + * up the conventional memory when done. DO NOT + * USE THIS TO CONSTRUCT A REAL MODE PTR, USE + * REAL_BASEP INSTEAD SO THAT OFFSETS WORK OUT + * CORRECTLY. + * + * Returned values: + * 0 if error + * 1 if success + */ +int RealCopy (ULONG start_offs, + ULONG end_offs, + REALPTR *real_basep, + FARPTR *prot_basep, + USHORT *rmem_adrp) +{ + ULONG rm_base; /* base real mode para addr for accessing */ + /* allocated conventional memory */ + UCHAR *source; /* source pointer for copy */ + FARPTR destin; /* destination pointer for copy */ + ULONG len; /* number of bytes to copy */ + ULONG temp; + USHORT stemp; + + /* First check for valid inputs + */ + if (start_offs >= end_offs || end_offs > 0x10000) + return (FALSE); + + /* Round start_offs down to a paragraph (16-byte) boundary so we can set up + * the real mode pointer easily. Round up end_offs to make sure we allocate + * enough paragraphs + */ + start_offs &= ~15; + end_offs = (15 + (end_offs << 4)) >> 4; + + /* Allocate the conventional memory for our real mode code. Remember to + * round byte count UP to 16-byte paragraph size. We alloc it + * above the DOS data buffer so both the DOS data buffer and the appl + * conventional mem block can still be resized. + * + * First just try to alloc it; if we can't get it, shrink the appl mem + * block down to the minimum, try to alloc the memory again, then grow the + * appl mem block back to the maximum. (Don't try to shrink the DOS data + * buffer to free conventional memory; it wouldn't be good for this routine + * to have the possible side effect of making file I/O run slower.) + */ + len = ((end_offs - start_offs) + 15) >> 4; + if (_dx_real_above(len, rmem_adrp, &stemp) != _DOSE_NONE) + { + if (_dx_cmem_usage(0, 0, &temp, &temp) != _DOSE_NONE) + return (FALSE); + + if (_dx_real_above(len, rmem_adrp, &stemp) != _DOSE_NONE) + *rmem_adrp = 0; + + if (_dx_cmem_usage(0, 1, &temp, &temp) != _DOSE_NONE) + { + if (*rmem_adrp != 0) + _dx_real_free (*rmem_adrp); + return (FALSE); + } + + if (*rmem_adrp == 0) + return (FALSE); + } + + /* Construct real mode & protected mode pointers to access the allocated + * memory. Note we know start_offs is aligned on a paragraph (16-byte) + * boundary, because we rounded it down. + * + * We make the offsets come out rights by backing off the real mode selector + * by start_offs. + */ + rm_base = ((ULONG) *rmem_adrp) - (start_offs >> 4); + RP_SET (*real_basep, 0, rm_base); + FP_SET (*prot_basep, rm_base << 4, SS_DOSMEM); + + /* Copy the real mode code/data to the allocated memory + */ + source = (UCHAR *) start_offs; + destin = *prot_basep; + FP_SET (destin, FP_OFF(*prot_basep) + start_offs, FP_SEL(*prot_basep)); + len = end_offs - start_offs; + WriteFarMem (destin, source, len); + + return (TRUE); +} +#endif /* DOSX && (DOSX & PHARLAP) */ diff --git a/msdos/pktdrvr.h b/msdos/pktdrvr.h new file mode 100644 index 0000000..08898ae --- /dev/null +++ b/msdos/pktdrvr.h @@ -0,0 +1,153 @@ +#ifndef __PKTDRVR_H +#define __PKTDRVR_H + +#define PUBLIC +#define LOCAL static + +#define RX_BUF_SIZE ETH_MTU /* buffer size variables. NB !! */ +#define TX_BUF_SIZE ETH_MTU /* must be same as in pkt_rx*.* */ + +#ifdef __HIGHC__ +#pragma Off(Align_members) +#else +#pragma pack(1) +#endif + +typedef enum { /* Packet-driver classes */ + PD_ETHER = 1, + PD_PRONET10 = 2, + PD_IEEE8025 = 3, + PD_OMNINET = 4, + PD_APPLETALK = 5, + PD_SLIP = 6, + PD_STARTLAN = 7, + PD_ARCNET = 8, + PD_AX25 = 9, + PD_KISS = 10, + PD_IEEE8023_2 = 11, + PD_FDDI8022 = 12, + PD_X25 = 13, + PD_LANstar = 14, + PD_PPP = 18 + } PKT_CLASS; + +typedef enum { /* Packet-driver receive modes */ + PDRX_OFF = 1, /* turn off receiver */ + PDRX_DIRECT, /* receive only to this interface */ + PDRX_BROADCAST, /* DIRECT + broadcast packets */ + PDRX_MULTICAST1, /* BROADCAST + limited multicast */ + PDRX_MULTICAST2, /* BROADCAST + all multicast */ + PDRX_ALL_PACKETS, /* receive all packets on network */ + } PKT_RX_MODE; + +typedef struct { + char type[8]; + char len; + } PKT_FRAME; + + +typedef struct { + BYTE class; /* = 1 for DEC/Interl/Xerox Ethernet */ + BYTE number; /* = 0 for single LAN adapter */ + WORD type; /* = 13 for 3C523 */ + BYTE funcs; /* Basic/Extended/HiPerf functions */ + WORD intr; /* user interrupt vector number */ + WORD handle; /* Handle associated with session */ + BYTE name [15]; /* Name of adapter interface,ie.3C523*/ + BOOL quiet; /* (don't) print errors to stdout */ + const char *error; /* address of error string */ + BYTE majVer; /* Major driver implementation ver. */ + BYTE minVer; /* Minor driver implementation ver. */ + BYTE dummyLen; /* length of following data */ + WORD MAClength; /* HiPerformance data, N/A */ + WORD MTU; /* HiPerformance data, N/A */ + WORD multicast; /* HiPerformance data, N/A */ + WORD rcvrBuffers; /* valid for */ + WORD UMTbufs; /* High Performance drivers only */ + WORD postEOIintr; /* Usage ?? */ + } PKT_INFO; + +#define PKT_PARAM_SIZE 14 /* members majVer - postEOIintr */ + + +typedef struct { + DWORD inPackets; /* # of packets received */ + DWORD outPackets; /* # of packets transmitted */ + DWORD inBytes; /* # of bytes received */ + DWORD outBytes; /* # of bytes transmitted */ + DWORD inErrors; /* # of reception errors */ + DWORD outErrors; /* # of transmission errors */ + DWORD lost; /* # of packets lost (RX) */ + } PKT_STAT; + + +typedef struct { + ETHER destin; + ETHER source; + WORD proto; + BYTE data [TX_BUF_SIZE]; + } TX_ELEMENT; + +typedef struct { + WORD firstCount; /* # of bytes on 1st */ + WORD secondCount; /* and 2nd upcall */ + WORD handle; /* instance that upcalled */ + ETHER destin; /* E-net destination address */ + ETHER source; /* E-net source address */ + WORD proto; /* protocol number */ + BYTE data [RX_BUF_SIZE]; + } RX_ELEMENT; + + +#ifdef __HIGHC__ +#pragma pop(Align_members) +#else +#pragma pack() +#endif + + +/* + * Prototypes for publics + */ + +#ifdef __cplusplus +extern "C" { +#endif + +extern PKT_STAT pktStat; /* statistics for packets */ +extern PKT_INFO pktInfo; /* packet-driver information */ + +extern PKT_RX_MODE receiveMode; +extern ETHER myAddress, ethBroadcast; + +extern BOOL PktInitDriver (PKT_RX_MODE mode); +extern BOOL PktExitDriver (void); + +extern const char *PktGetErrorStr (int errNum); +extern const char *PktGetClassName (WORD class); +extern const char *PktRXmodeStr (PKT_RX_MODE mode); +extern BOOL PktSearchDriver (void); +extern int PktReceive (BYTE *buf, int max); +extern BOOL PktTransmit (const void *eth, int len); +extern DWORD PktRxDropped (void); +extern BOOL PktReleaseHandle (WORD handle); +extern BOOL PktTerminHandle (WORD handle); +extern BOOL PktResetInterface (WORD handle); +extern BOOL PktSetReceiverMode(PKT_RX_MODE mode); +extern BOOL PktGetReceiverMode(PKT_RX_MODE *mode); +extern BOOL PktGetStatistics (WORD handle); +extern BOOL PktSessStatistics (WORD handle); +extern BOOL PktResetStatistics(WORD handle); +extern BOOL PktGetAddress (ETHER *addr); +extern BOOL PktSetAddress (const ETHER *addr); +extern BOOL PktGetDriverInfo (void); +extern BOOL PktGetDriverParam (void); +extern void PktQueueBusy (BOOL busy); +extern WORD PktBuffersUsed (void); + +#ifdef __cplusplus +} +#endif + +#endif /* __PKTDRVR_H */ + diff --git a/msdos/readme.dos b/msdos/readme.dos new file mode 100644 index 0000000..02ef1f7 --- /dev/null +++ b/msdos/readme.dos @@ -0,0 +1,162 @@ +@(#) $Header: /tcpdump/master/libpcap/msdos/readme.dos,v 1.3 2004-12-19 19:47:01 guy Exp $ (LBL) + +libpcap for DOS +--------------- + +This file contains some notes on building and using libpcap for MS-DOS. +Look in `README' and `pcap.man' for usage and details. These targets are +supported: + + - Borland C 4.0+ small or large model. + - Metaware HighC 3.1+ with PharLap DOS-extender + - GNU C 2.7+ with djgpp 2.01+ DOS extender + - Watcom C 11.x with DOS4GW extender + +Note: the files in the libpcap.zip contains short trucated filenames. + So for djgpp to work with these, disable the use of long file names by + setting "LFN=n" in the environment. + +Files specific to DOS are pcap-dos.[ch] and the assembly and C files in +the MSDOS sub-directory. Remember to built lipcap libraries from the top +install directory. And not from the MSDOS sub-directory. + +Note for djgpp users: + If you got the libpcap from the official site www.tcpdump, then that + distribution does NOT contain any sources for building 32-bit drivers. + Instead get the full version at + http://www.bgnett.no/~giva/pcap/libpcap.zip + + and set "USE_32BIT_DRIVERS = 1" in msdos\common.dj. + + + +Requirements +------------ + +DOS-libpcap currently only works reliably with a real-mode Ethernet packet- +driver. This driver must be installed prior to using any program (e.g. +tcpdump) compiled with libpcap. Work is underway to implement protected- +mode drivers for 32-bit targets (djgpp only). The 3Com 3c509 driver is +working almost perfectly. Due to lack of LAN-cards, I've not had the +opportunity to test other drivers. These 32-bit drivers are modified +Linux drivers. + + +Required packages +----------------- + +The following packages and tools must be present for all targets. + +1. Watt-32 tcp/ip library. This library is *not* used to send or + receive network data. It's mostly used to access the 'hosts' + file and other features. Get 'watt32s*.zip' at: + + http://www.bgnett.no/~giva/ + +2. Exception handler and disassember library (libexc.a) is needed if + "USE_EXCEPT = 1" in common.dj. Available at: + + http://www.bgnett.no/~giva/misc/exc_dx07.zip + +3. Flex & Bison is used to generate parser for the filter handler + pcap_compile: + + ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/flx254b.zip + ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/bsn128b.zip + +4. NASM assembler v 0.98 or later is required when building djgpp and + Watcom targets: + + ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2tk/nasm098p.zip + +5. sed (Stream Editor) is required for doing `make depend'. + It's available at + ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/sed*.zip + + A touch tool to update the time-stamp of a file. E.g. + ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/grep*.zip + +6. For djgpp rm.exe and cp.exe are required. These should already be + part of your djgpp installation. Also required (experimental at the + time) for djgpp is DLX 2.91 or later. This tool is for the generation + of dynamically loadable modules. + + +Compiling libpcap +----------------- + +Follow these steps in building libpcap: + +1. Make sure you've installed Watt-32 properly (see it's `INSTALL' file). + During that installation a environment variable `WATT_ROOT' is set. + This variable is used for building libpcap also (`WATT_INC' is + deducted from `WATT_ROOT'). djgpp users should also define environment + variables `C_INCLUDE_PATH' and `LIBRARY_PATH' to point to the include + directory and library directory respectively. E.g. put this in your + AUTOEXEC.BAT: + set C_INCLUDE_PATH=c:/net/watt/inc + set LIBRARY_PATH=c:/net/watt/lib + +2. Revise the msdos/common.dj file for your djgpp/gcc installation; + - change the value of `GCCLIB' to match location of libgcc.a. + - set `USE_32BIT_DRIVERS = 1' to build 32-bit driver objects. + + +3. Build pcap by using appropriate makefile. For djgpp, use: + `make -f msdos/makefile.dj' (i.e. GNU `make') + + For a Watcom target say: + `wmake -f msdos\makefile.wc' + + For a Borland target say: + `maker -f msdos\Makefile pcap_bc.lib' (Borland's `maker.exe') + + And for a HighC/Pharlap target say: + `maker -f msdos\Makefile pcap_hc.lib' (Borland's `maker.exe') + + You might like to change some `CFLAGS' -- only `DEBUG' define currently + have any effect. It shows a rotating "fan" in upper right corner of + screen. Remove `DEBUG' if you don't like it. You could add + `-fomit-frame-pointer' to `CFLAGS' to speed up the generated code. + But note, this makes debugging and crash-traceback difficult. Only + add it if you're fully confident your application is 100% stable. + + Note: Code in `USE_NDIS2' does not work at the moment. + +4. The resulting libraries are put in current directory. There's no + test-program for `libpcap'. Linking the library with `tcpdump' is + the ultimate test anyway. + + + +Extensions to libpcap +--------------------- + +I've included some extra functions to DOS-libpcap: + + `pcap_config_hook (const char *name, const char *value)' + + Allows an application to set values of internal libpcap variables. + `name' is typically a left-side keyword with an associated `value' + that is called from application's configure process (see tcpdump's + config.c file). libpcap keeps a set of tables that are searched for + a name/value match. Currently only used to set debug-levels and + parameters for the 32-bit network drivers. + + `pcap_set_wait (pcap_t *, void (*)(void), int)' : + + Only effective when reading offline traffic from dump-files. + Function `pcap_offline_read()' will wait (and optionally yield) + before printing next packet. This will simulate the pace the packets + where actually recorded. + + + +Happy sniffing ! + + +Gisle Vanem + + +October 1999, 2004 + diff --git a/nametoaddr.c b/nametoaddr.c new file mode 100644 index 0000000..5835e4d --- /dev/null +++ b/nametoaddr.c @@ -0,0 +1,511 @@ +/* + * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * Name to id translation routines used by the scanner. + * These functions are not time critical. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/nametoaddr.c,v 1.83 2008-02-06 10:21:30 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef DECNETLIB +#include +#include +#endif + +#ifdef WIN32 +#include + +#else /* WIN32 */ + +#include +#include /* concession to AIX */ +#include +#include + +#include +#endif /* WIN32 */ + +#ifndef WIN32 +#ifdef HAVE_ETHER_HOSTTON +/* + * XXX - do we need any of this if doesn't declare + * ether_hostton()? + */ +#ifdef HAVE_NETINET_IF_ETHER_H +struct mbuf; /* Squelch compiler warnings on some platforms for */ +struct rtentry; /* declarations in */ +#include /* for "struct ifnet" in "struct arpcom" on Solaris */ +#include +#endif /* HAVE_NETINET_IF_ETHER_H */ +#ifdef NETINET_ETHER_H_DECLARES_ETHER_HOSTTON +#include +#endif /* NETINET_ETHER_H_DECLARES_ETHER_HOSTTON */ +#endif /* HAVE_ETHER_HOSTTON */ +#include +#include +#endif /* WIN32 */ + +#include +#include +#include +#include +#include + +#include "pcap-int.h" + +#include "gencode.h" +#include + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +#ifndef NTOHL +#define NTOHL(x) (x) = ntohl(x) +#define NTOHS(x) (x) = ntohs(x) +#endif + +static inline int xdtoi(int); + +/* + * Convert host name to internet address. + * Return 0 upon failure. + */ +bpf_u_int32 ** +pcap_nametoaddr(const char *name) +{ +#ifndef h_addr + static bpf_u_int32 *hlist[2]; +#endif + bpf_u_int32 **p; + struct hostent *hp; + + if ((hp = gethostbyname(name)) != NULL) { +#ifndef h_addr + hlist[0] = (bpf_u_int32 *)hp->h_addr; + NTOHL(hp->h_addr); + return hlist; +#else + for (p = (bpf_u_int32 **)hp->h_addr_list; *p; ++p) + NTOHL(**p); + return (bpf_u_int32 **)hp->h_addr_list; +#endif + } + else + return 0; +} + +#ifdef INET6 +struct addrinfo * +pcap_nametoaddrinfo(const char *name) +{ + struct addrinfo hints, *res; + int error; + + memset(&hints, 0, sizeof(hints)); + hints.ai_family = PF_UNSPEC; + hints.ai_socktype = SOCK_STREAM; /*not really*/ + hints.ai_protocol = IPPROTO_TCP; /*not really*/ + error = getaddrinfo(name, NULL, &hints, &res); + if (error) + return NULL; + else + return res; +} +#endif /*INET6*/ + +/* + * Convert net name to internet address. + * Return 0 upon failure. + */ +bpf_u_int32 +pcap_nametonetaddr(const char *name) +{ +#ifndef WIN32 + struct netent *np; + + if ((np = getnetbyname(name)) != NULL) + return np->n_net; + else + return 0; +#else + /* + * There's no "getnetbyname()" on Windows. + */ + return 0; +#endif +} + +/* + * Convert a port name to its port and protocol numbers. + * We assume only TCP or UDP. + * Return 0 upon failure. + */ +int +pcap_nametoport(const char *name, int *port, int *proto) +{ + struct servent *sp; + int tcp_port = -1; + int udp_port = -1; + + /* + * We need to check /etc/services for ambiguous entries. + * If we find the ambiguous entry, and it has the + * same port number, change the proto to PROTO_UNDEF + * so both TCP and UDP will be checked. + */ + sp = getservbyname(name, "tcp"); + if (sp != NULL) tcp_port = ntohs(sp->s_port); + sp = getservbyname(name, "udp"); + if (sp != NULL) udp_port = ntohs(sp->s_port); + if (tcp_port >= 0) { + *port = tcp_port; + *proto = IPPROTO_TCP; + if (udp_port >= 0) { + if (udp_port == tcp_port) + *proto = PROTO_UNDEF; +#ifdef notdef + else + /* Can't handle ambiguous names that refer + to different port numbers. */ + warning("ambiguous port %s in /etc/services", + name); +#endif + } + return 1; + } + if (udp_port >= 0) { + *port = udp_port; + *proto = IPPROTO_UDP; + return 1; + } +#if defined(ultrix) || defined(__osf__) + /* Special hack in case NFS isn't in /etc/services */ + if (strcmp(name, "nfs") == 0) { + *port = 2049; + *proto = PROTO_UNDEF; + return 1; + } +#endif + return 0; +} + +/* + * Convert a string in the form PPP-PPP, where correspond to ports, to + * a starting and ending port in a port range. + * Return 0 on failure. + */ +int +pcap_nametoportrange(const char *name, int *port1, int *port2, int *proto) +{ + u_int p1, p2; + char *off, *cpy; + int save_proto; + + if (sscanf(name, "%d-%d", &p1, &p2) != 2) { + if ((cpy = strdup(name)) == NULL) + return 0; + + if ((off = strchr(cpy, '-')) == NULL) { + free(cpy); + return 0; + } + + *off = '\0'; + + if (pcap_nametoport(cpy, port1, proto) == 0) { + free(cpy); + return 0; + } + save_proto = *proto; + + if (pcap_nametoport(off + 1, port2, proto) == 0) { + free(cpy); + return 0; + } + + if (*proto != save_proto) + *proto = PROTO_UNDEF; + } else { + *port1 = p1; + *port2 = p2; + *proto = PROTO_UNDEF; + } + + return 1; +} + +int +pcap_nametoproto(const char *str) +{ + struct protoent *p; + + p = getprotobyname(str); + if (p != 0) + return p->p_proto; + else + return PROTO_UNDEF; +} + +#include "ethertype.h" + +struct eproto { + const char *s; + u_short p; +}; + +/* Static data base of ether protocol types. */ +struct eproto eproto_db[] = { + { "pup", ETHERTYPE_PUP }, + { "xns", ETHERTYPE_NS }, + { "ip", ETHERTYPE_IP }, +#ifdef INET6 + { "ip6", ETHERTYPE_IPV6 }, +#endif + { "arp", ETHERTYPE_ARP }, + { "rarp", ETHERTYPE_REVARP }, + { "sprite", ETHERTYPE_SPRITE }, + { "mopdl", ETHERTYPE_MOPDL }, + { "moprc", ETHERTYPE_MOPRC }, + { "decnet", ETHERTYPE_DN }, + { "lat", ETHERTYPE_LAT }, + { "sca", ETHERTYPE_SCA }, + { "lanbridge", ETHERTYPE_LANBRIDGE }, + { "vexp", ETHERTYPE_VEXP }, + { "vprod", ETHERTYPE_VPROD }, + { "atalk", ETHERTYPE_ATALK }, + { "atalkarp", ETHERTYPE_AARP }, + { "loopback", ETHERTYPE_LOOPBACK }, + { "decdts", ETHERTYPE_DECDTS }, + { "decdns", ETHERTYPE_DECDNS }, + { (char *)0, 0 } +}; + +int +pcap_nametoeproto(const char *s) +{ + struct eproto *p = eproto_db; + + while (p->s != 0) { + if (strcmp(p->s, s) == 0) + return p->p; + p += 1; + } + return PROTO_UNDEF; +} + +#include "llc.h" + +/* Static data base of LLC values. */ +static struct eproto llc_db[] = { + { "iso", LLCSAP_ISONS }, + { "stp", LLCSAP_8021D }, + { "ipx", LLCSAP_IPX }, + { "netbeui", LLCSAP_NETBEUI }, + { (char *)0, 0 } +}; + +int +pcap_nametollc(const char *s) +{ + struct eproto *p = llc_db; + + while (p->s != 0) { + if (strcmp(p->s, s) == 0) + return p->p; + p += 1; + } + return PROTO_UNDEF; +} + +/* Hex digit to integer. */ +static inline int +xdtoi(c) + register int c; +{ + if (isdigit(c)) + return c - '0'; + else if (islower(c)) + return c - 'a' + 10; + else + return c - 'A' + 10; +} + +int +__pcap_atoin(const char *s, bpf_u_int32 *addr) +{ + u_int n; + int len; + + *addr = 0; + len = 0; + while (1) { + n = 0; + while (*s && *s != '.') + n = n * 10 + *s++ - '0'; + *addr <<= 8; + *addr |= n & 0xff; + len += 8; + if (*s == '\0') + return len; + ++s; + } + /* NOTREACHED */ +} + +int +__pcap_atodn(const char *s, bpf_u_int32 *addr) +{ +#define AREASHIFT 10 +#define AREAMASK 0176000 +#define NODEMASK 01777 + + u_int node, area; + + if (sscanf(s, "%d.%d", &area, &node) != 2) + bpf_error("malformed decnet address '%s'", s); + + *addr = (area << AREASHIFT) & AREAMASK; + *addr |= (node & NODEMASK); + + return(32); +} + +/* + * Convert 's', which can have the one of the forms: + * + * "xx:xx:xx:xx:xx:xx" + * "xx.xx.xx.xx.xx.xx" + * "xx-xx-xx-xx-xx-xx" + * "xxxx.xxxx.xxxx" + * "xxxxxxxxxxxx" + * + * (or various mixes of ':', '.', and '-') into a new + * ethernet address. Assumes 's' is well formed. + */ +u_char * +pcap_ether_aton(const char *s) +{ + register u_char *ep, *e; + register u_int d; + + e = ep = (u_char *)malloc(6); + + while (*s) { + if (*s == ':' || *s == '.' || *s == '-') + s += 1; + d = xdtoi(*s++); + if (isxdigit((unsigned char)*s)) { + d <<= 4; + d |= xdtoi(*s++); + } + *ep++ = d; + } + + return (e); +} + +#ifndef HAVE_ETHER_HOSTTON +/* Roll our own */ +u_char * +pcap_ether_hostton(const char *name) +{ + register struct pcap_etherent *ep; + register u_char *ap; + static FILE *fp = NULL; + static int init = 0; + + if (!init) { + fp = fopen(PCAP_ETHERS_FILE, "r"); + ++init; + if (fp == NULL) + return (NULL); + } else if (fp == NULL) + return (NULL); + else + rewind(fp); + + while ((ep = pcap_next_etherent(fp)) != NULL) { + if (strcmp(ep->name, name) == 0) { + ap = (u_char *)malloc(6); + if (ap != NULL) { + memcpy(ap, ep->addr, 6); + return (ap); + } + break; + } + } + return (NULL); +} +#else + +#if !defined(HAVE_DECL_ETHER_HOSTTON) || !HAVE_DECL_ETHER_HOSTTON +#ifndef HAVE_STRUCT_ETHER_ADDR +struct ether_addr { + unsigned char ether_addr_octet[6]; +}; +#endif +extern int ether_hostton(const char *, struct ether_addr *); +#endif + +/* Use the os supplied routines */ +u_char * +pcap_ether_hostton(const char *name) +{ + register u_char *ap; + u_char a[6]; + + ap = NULL; + if (ether_hostton(name, (struct ether_addr *)a) == 0) { + ap = (u_char *)malloc(6); + if (ap != NULL) + memcpy((char *)ap, (char *)a, 6); + } + return (ap); +} +#endif + +u_short +__pcap_nametodnaddr(const char *name) +{ +#ifdef DECNETLIB + struct nodeent *getnodebyname(); + struct nodeent *nep; + unsigned short res; + + nep = getnodebyname(name); + if (nep == ((struct nodeent *)0)) + bpf_error("unknown decnet host name '%s'\n", name); + + memcpy((char *)&res, (char *)nep->n_addr, sizeof(unsigned short)); + return(res); +#else + bpf_error("decnet name support not included, '%s' cannot be translated\n", + name); + return(0); +#endif +} diff --git a/nlpid.h b/nlpid.h new file mode 100644 index 0000000..5327a36 --- /dev/null +++ b/nlpid.h @@ -0,0 +1,58 @@ +/* + * Copyright (c) 1996 + * Juniper Networks, Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution. The name of Juniper Networks may not + * be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * @(#) $Header: /tcpdump/master/libpcap/nlpid.h,v 1.2 2002-12-06 00:01:34 hannes Exp $ (Juniper) + */ + +/* Types missing from some systems */ + +/* + * Network layer prototocol identifiers + */ +#ifndef ISO8473_CLNP +#define ISO8473_CLNP 0x81 +#endif +#ifndef ISO9542_ESIS +#define ISO9542_ESIS 0x82 +#endif +#ifndef ISO9542X25_ESIS +#define ISO9542X25_ESIS 0x8a +#endif +#ifndef ISO10589_ISIS +#define ISO10589_ISIS 0x83 +#endif +/* + * this does not really belong in the nlpid.h file + * however we need it for generating nice + * IS-IS related BPF filters + */ +#define ISIS_L1_LAN_IIH 15 +#define ISIS_L2_LAN_IIH 16 +#define ISIS_PTP_IIH 17 +#define ISIS_L1_LSP 18 +#define ISIS_L2_LSP 20 +#define ISIS_L1_CSNP 24 +#define ISIS_L2_CSNP 25 +#define ISIS_L1_PSNP 26 +#define ISIS_L2_PSNP 27 + +#ifndef ISO8878A_CONS +#define ISO8878A_CONS 0x84 +#endif +#ifndef ISO10747_IDRP +#define ISO10747_IDRP 0x85 +#endif diff --git a/optimize.c b/optimize.c new file mode 100644 index 0000000..6bbda95 --- /dev/null +++ b/optimize.c @@ -0,0 +1,2347 @@ +/* + * Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994, 1995, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * Optimization module for tcpdump intermediate representation. + */ +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/optimize.c,v 1.91 2008-01-02 04:16:46 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef WIN32 +#include +#else /* WIN32 */ +#if HAVE_INTTYPES_H +#include +#elif HAVE_STDINT_H +#include +#endif +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +#include +#endif /* WIN32 */ + +#include +#include +#include +#include + +#include + +#include "pcap-int.h" + +#include "gencode.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +#ifdef BDEBUG +extern int dflag; +#endif + +#if defined(MSDOS) && !defined(__DJGPP__) +extern int _w32_ffs (int mask); +#define ffs _w32_ffs +#endif + +#if defined(WIN32) && defined (_MSC_VER) +int ffs(int mask); +#endif + +/* + * Represents a deleted instruction. + */ +#define NOP -1 + +/* + * Register numbers for use-def values. + * 0 through BPF_MEMWORDS-1 represent the corresponding scratch memory + * location. A_ATOM is the accumulator and X_ATOM is the index + * register. + */ +#define A_ATOM BPF_MEMWORDS +#define X_ATOM (BPF_MEMWORDS+1) + +/* + * This define is used to represent *both* the accumulator and + * x register in use-def computations. + * Currently, the use-def code assumes only one definition per instruction. + */ +#define AX_ATOM N_ATOMS + +/* + * A flag to indicate that further optimization is needed. + * Iterative passes are continued until a given pass yields no + * branch movement. + */ +static int done; + +/* + * A block is marked if only if its mark equals the current mark. + * Rather than traverse the code array, marking each item, 'cur_mark' is + * incremented. This automatically makes each element unmarked. + */ +static int cur_mark; +#define isMarked(p) ((p)->mark == cur_mark) +#define unMarkAll() cur_mark += 1 +#define Mark(p) ((p)->mark = cur_mark) + +static void opt_init(struct block *); +static void opt_cleanup(void); + +static void make_marks(struct block *); +static void mark_code(struct block *); + +static void intern_blocks(struct block *); + +static int eq_slist(struct slist *, struct slist *); + +static void find_levels_r(struct block *); + +static void find_levels(struct block *); +static void find_dom(struct block *); +static void propedom(struct edge *); +static void find_edom(struct block *); +static void find_closure(struct block *); +static int atomuse(struct stmt *); +static int atomdef(struct stmt *); +static void compute_local_ud(struct block *); +static void find_ud(struct block *); +static void init_val(void); +static int F(int, int, int); +static inline void vstore(struct stmt *, int *, int, int); +static void opt_blk(struct block *, int); +static int use_conflict(struct block *, struct block *); +static void opt_j(struct edge *); +static void or_pullup(struct block *); +static void and_pullup(struct block *); +static void opt_blks(struct block *, int); +static inline void link_inedge(struct edge *, struct block *); +static void find_inedges(struct block *); +static void opt_root(struct block **); +static void opt_loop(struct block *, int); +static void fold_op(struct stmt *, int, int); +static inline struct slist *this_op(struct slist *); +static void opt_not(struct block *); +static void opt_peep(struct block *); +static void opt_stmt(struct stmt *, int[], int); +static void deadstmt(struct stmt *, struct stmt *[]); +static void opt_deadstores(struct block *); +static struct block *fold_edge(struct block *, struct edge *); +static inline int eq_blk(struct block *, struct block *); +static u_int slength(struct slist *); +static int count_blocks(struct block *); +static void number_blks_r(struct block *); +static u_int count_stmts(struct block *); +static int convert_code_r(struct block *); +#ifdef BDEBUG +static void opt_dump(struct block *); +#endif + +static int n_blocks; +struct block **blocks; +static int n_edges; +struct edge **edges; + +/* + * A bit vector set representation of the dominators. + * We round up the set size to the next power of two. + */ +static int nodewords; +static int edgewords; +struct block **levels; +bpf_u_int32 *space; +#define BITS_PER_WORD (8*sizeof(bpf_u_int32)) +/* + * True if a is in uset {p} + */ +#define SET_MEMBER(p, a) \ +((p)[(unsigned)(a) / BITS_PER_WORD] & (1 << ((unsigned)(a) % BITS_PER_WORD))) + +/* + * Add 'a' to uset p. + */ +#define SET_INSERT(p, a) \ +(p)[(unsigned)(a) / BITS_PER_WORD] |= (1 << ((unsigned)(a) % BITS_PER_WORD)) + +/* + * Delete 'a' from uset p. + */ +#define SET_DELETE(p, a) \ +(p)[(unsigned)(a) / BITS_PER_WORD] &= ~(1 << ((unsigned)(a) % BITS_PER_WORD)) + +/* + * a := a intersect b + */ +#define SET_INTERSECT(a, b, n)\ +{\ + register bpf_u_int32 *_x = a, *_y = b;\ + register int _n = n;\ + while (--_n >= 0) *_x++ &= *_y++;\ +} + +/* + * a := a - b + */ +#define SET_SUBTRACT(a, b, n)\ +{\ + register bpf_u_int32 *_x = a, *_y = b;\ + register int _n = n;\ + while (--_n >= 0) *_x++ &=~ *_y++;\ +} + +/* + * a := a union b + */ +#define SET_UNION(a, b, n)\ +{\ + register bpf_u_int32 *_x = a, *_y = b;\ + register int _n = n;\ + while (--_n >= 0) *_x++ |= *_y++;\ +} + +static uset all_dom_sets; +static uset all_closure_sets; +static uset all_edge_sets; + +#ifndef MAX +#define MAX(a,b) ((a)>(b)?(a):(b)) +#endif + +static void +find_levels_r(b) + struct block *b; +{ + int level; + + if (isMarked(b)) + return; + + Mark(b); + b->link = 0; + + if (JT(b)) { + find_levels_r(JT(b)); + find_levels_r(JF(b)); + level = MAX(JT(b)->level, JF(b)->level) + 1; + } else + level = 0; + b->level = level; + b->link = levels[level]; + levels[level] = b; +} + +/* + * Level graph. The levels go from 0 at the leaves to + * N_LEVELS at the root. The levels[] array points to the + * first node of the level list, whose elements are linked + * with the 'link' field of the struct block. + */ +static void +find_levels(root) + struct block *root; +{ + memset((char *)levels, 0, n_blocks * sizeof(*levels)); + unMarkAll(); + find_levels_r(root); +} + +/* + * Find dominator relationships. + * Assumes graph has been leveled. + */ +static void +find_dom(root) + struct block *root; +{ + int i; + struct block *b; + bpf_u_int32 *x; + + /* + * Initialize sets to contain all nodes. + */ + x = all_dom_sets; + i = n_blocks * nodewords; + while (--i >= 0) + *x++ = ~0; + /* Root starts off empty. */ + for (i = nodewords; --i >= 0;) + root->dom[i] = 0; + + /* root->level is the highest level no found. */ + for (i = root->level; i >= 0; --i) { + for (b = levels[i]; b; b = b->link) { + SET_INSERT(b->dom, b->id); + if (JT(b) == 0) + continue; + SET_INTERSECT(JT(b)->dom, b->dom, nodewords); + SET_INTERSECT(JF(b)->dom, b->dom, nodewords); + } + } +} + +static void +propedom(ep) + struct edge *ep; +{ + SET_INSERT(ep->edom, ep->id); + if (ep->succ) { + SET_INTERSECT(ep->succ->et.edom, ep->edom, edgewords); + SET_INTERSECT(ep->succ->ef.edom, ep->edom, edgewords); + } +} + +/* + * Compute edge dominators. + * Assumes graph has been leveled and predecessors established. + */ +static void +find_edom(root) + struct block *root; +{ + int i; + uset x; + struct block *b; + + x = all_edge_sets; + for (i = n_edges * edgewords; --i >= 0; ) + x[i] = ~0; + + /* root->level is the highest level no found. */ + memset(root->et.edom, 0, edgewords * sizeof(*(uset)0)); + memset(root->ef.edom, 0, edgewords * sizeof(*(uset)0)); + for (i = root->level; i >= 0; --i) { + for (b = levels[i]; b != 0; b = b->link) { + propedom(&b->et); + propedom(&b->ef); + } + } +} + +/* + * Find the backwards transitive closure of the flow graph. These sets + * are backwards in the sense that we find the set of nodes that reach + * a given node, not the set of nodes that can be reached by a node. + * + * Assumes graph has been leveled. + */ +static void +find_closure(root) + struct block *root; +{ + int i; + struct block *b; + + /* + * Initialize sets to contain no nodes. + */ + memset((char *)all_closure_sets, 0, + n_blocks * nodewords * sizeof(*all_closure_sets)); + + /* root->level is the highest level no found. */ + for (i = root->level; i >= 0; --i) { + for (b = levels[i]; b; b = b->link) { + SET_INSERT(b->closure, b->id); + if (JT(b) == 0) + continue; + SET_UNION(JT(b)->closure, b->closure, nodewords); + SET_UNION(JF(b)->closure, b->closure, nodewords); + } + } +} + +/* + * Return the register number that is used by s. If A and X are both + * used, return AX_ATOM. If no register is used, return -1. + * + * The implementation should probably change to an array access. + */ +static int +atomuse(s) + struct stmt *s; +{ + register int c = s->code; + + if (c == NOP) + return -1; + + switch (BPF_CLASS(c)) { + + case BPF_RET: + return (BPF_RVAL(c) == BPF_A) ? A_ATOM : + (BPF_RVAL(c) == BPF_X) ? X_ATOM : -1; + + case BPF_LD: + case BPF_LDX: + return (BPF_MODE(c) == BPF_IND) ? X_ATOM : + (BPF_MODE(c) == BPF_MEM) ? s->k : -1; + + case BPF_ST: + return A_ATOM; + + case BPF_STX: + return X_ATOM; + + case BPF_JMP: + case BPF_ALU: + if (BPF_SRC(c) == BPF_X) + return AX_ATOM; + return A_ATOM; + + case BPF_MISC: + return BPF_MISCOP(c) == BPF_TXA ? X_ATOM : A_ATOM; + } + abort(); + /* NOTREACHED */ +} + +/* + * Return the register number that is defined by 's'. We assume that + * a single stmt cannot define more than one register. If no register + * is defined, return -1. + * + * The implementation should probably change to an array access. + */ +static int +atomdef(s) + struct stmt *s; +{ + if (s->code == NOP) + return -1; + + switch (BPF_CLASS(s->code)) { + + case BPF_LD: + case BPF_ALU: + return A_ATOM; + + case BPF_LDX: + return X_ATOM; + + case BPF_ST: + case BPF_STX: + return s->k; + + case BPF_MISC: + return BPF_MISCOP(s->code) == BPF_TAX ? X_ATOM : A_ATOM; + } + return -1; +} + +/* + * Compute the sets of registers used, defined, and killed by 'b'. + * + * "Used" means that a statement in 'b' uses the register before any + * statement in 'b' defines it, i.e. it uses the value left in + * that register by a predecessor block of this block. + * "Defined" means that a statement in 'b' defines it. + * "Killed" means that a statement in 'b' defines it before any + * statement in 'b' uses it, i.e. it kills the value left in that + * register by a predecessor block of this block. + */ +static void +compute_local_ud(b) + struct block *b; +{ + struct slist *s; + atomset def = 0, use = 0, kill = 0; + int atom; + + for (s = b->stmts; s; s = s->next) { + if (s->s.code == NOP) + continue; + atom = atomuse(&s->s); + if (atom >= 0) { + if (atom == AX_ATOM) { + if (!ATOMELEM(def, X_ATOM)) + use |= ATOMMASK(X_ATOM); + if (!ATOMELEM(def, A_ATOM)) + use |= ATOMMASK(A_ATOM); + } + else if (atom < N_ATOMS) { + if (!ATOMELEM(def, atom)) + use |= ATOMMASK(atom); + } + else + abort(); + } + atom = atomdef(&s->s); + if (atom >= 0) { + if (!ATOMELEM(use, atom)) + kill |= ATOMMASK(atom); + def |= ATOMMASK(atom); + } + } + if (BPF_CLASS(b->s.code) == BPF_JMP) { + /* + * XXX - what about RET? + */ + atom = atomuse(&b->s); + if (atom >= 0) { + if (atom == AX_ATOM) { + if (!ATOMELEM(def, X_ATOM)) + use |= ATOMMASK(X_ATOM); + if (!ATOMELEM(def, A_ATOM)) + use |= ATOMMASK(A_ATOM); + } + else if (atom < N_ATOMS) { + if (!ATOMELEM(def, atom)) + use |= ATOMMASK(atom); + } + else + abort(); + } + } + + b->def = def; + b->kill = kill; + b->in_use = use; +} + +/* + * Assume graph is already leveled. + */ +static void +find_ud(root) + struct block *root; +{ + int i, maxlevel; + struct block *p; + + /* + * root->level is the highest level no found; + * count down from there. + */ + maxlevel = root->level; + for (i = maxlevel; i >= 0; --i) + for (p = levels[i]; p; p = p->link) { + compute_local_ud(p); + p->out_use = 0; + } + + for (i = 1; i <= maxlevel; ++i) { + for (p = levels[i]; p; p = p->link) { + p->out_use |= JT(p)->in_use | JF(p)->in_use; + p->in_use |= p->out_use &~ p->kill; + } + } +} + +/* + * These data structures are used in a Cocke and Shwarz style + * value numbering scheme. Since the flowgraph is acyclic, + * exit values can be propagated from a node's predecessors + * provided it is uniquely defined. + */ +struct valnode { + int code; + int v0, v1; + int val; + struct valnode *next; +}; + +#define MODULUS 213 +static struct valnode *hashtbl[MODULUS]; +static int curval; +static int maxval; + +/* Integer constants mapped with the load immediate opcode. */ +#define K(i) F(BPF_LD|BPF_IMM|BPF_W, i, 0L) + +struct vmapinfo { + int is_const; + bpf_int32 const_val; +}; + +struct vmapinfo *vmap; +struct valnode *vnode_base; +struct valnode *next_vnode; + +static void +init_val() +{ + curval = 0; + next_vnode = vnode_base; + memset((char *)vmap, 0, maxval * sizeof(*vmap)); + memset((char *)hashtbl, 0, sizeof hashtbl); +} + +/* Because we really don't have an IR, this stuff is a little messy. */ +static int +F(code, v0, v1) + int code; + int v0, v1; +{ + u_int hash; + int val; + struct valnode *p; + + hash = (u_int)code ^ (v0 << 4) ^ (v1 << 8); + hash %= MODULUS; + + for (p = hashtbl[hash]; p; p = p->next) + if (p->code == code && p->v0 == v0 && p->v1 == v1) + return p->val; + + val = ++curval; + if (BPF_MODE(code) == BPF_IMM && + (BPF_CLASS(code) == BPF_LD || BPF_CLASS(code) == BPF_LDX)) { + vmap[val].const_val = v0; + vmap[val].is_const = 1; + } + p = next_vnode++; + p->val = val; + p->code = code; + p->v0 = v0; + p->v1 = v1; + p->next = hashtbl[hash]; + hashtbl[hash] = p; + + return val; +} + +static inline void +vstore(s, valp, newval, alter) + struct stmt *s; + int *valp; + int newval; + int alter; +{ + if (alter && *valp == newval) + s->code = NOP; + else + *valp = newval; +} + +static void +fold_op(s, v0, v1) + struct stmt *s; + int v0, v1; +{ + bpf_u_int32 a, b; + + a = vmap[v0].const_val; + b = vmap[v1].const_val; + + switch (BPF_OP(s->code)) { + case BPF_ADD: + a += b; + break; + + case BPF_SUB: + a -= b; + break; + + case BPF_MUL: + a *= b; + break; + + case BPF_DIV: + if (b == 0) + bpf_error("division by zero"); + a /= b; + break; + + case BPF_AND: + a &= b; + break; + + case BPF_OR: + a |= b; + break; + + case BPF_LSH: + a <<= b; + break; + + case BPF_RSH: + a >>= b; + break; + + case BPF_NEG: + a = -a; + break; + + default: + abort(); + } + s->k = a; + s->code = BPF_LD|BPF_IMM; + done = 0; +} + +static inline struct slist * +this_op(s) + struct slist *s; +{ + while (s != 0 && s->s.code == NOP) + s = s->next; + return s; +} + +static void +opt_not(b) + struct block *b; +{ + struct block *tmp = JT(b); + + JT(b) = JF(b); + JF(b) = tmp; +} + +static void +opt_peep(b) + struct block *b; +{ + struct slist *s; + struct slist *next, *last; + int val; + + s = b->stmts; + if (s == 0) + return; + + last = s; + for (/*empty*/; /*empty*/; s = next) { + /* + * Skip over nops. + */ + s = this_op(s); + if (s == 0) + break; /* nothing left in the block */ + + /* + * Find the next real instruction after that one + * (skipping nops). + */ + next = this_op(s->next); + if (next == 0) + break; /* no next instruction */ + last = next; + + /* + * st M[k] --> st M[k] + * ldx M[k] tax + */ + if (s->s.code == BPF_ST && + next->s.code == (BPF_LDX|BPF_MEM) && + s->s.k == next->s.k) { + done = 0; + next->s.code = BPF_MISC|BPF_TAX; + } + /* + * ld #k --> ldx #k + * tax txa + */ + if (s->s.code == (BPF_LD|BPF_IMM) && + next->s.code == (BPF_MISC|BPF_TAX)) { + s->s.code = BPF_LDX|BPF_IMM; + next->s.code = BPF_MISC|BPF_TXA; + done = 0; + } + /* + * This is an ugly special case, but it happens + * when you say tcp[k] or udp[k] where k is a constant. + */ + if (s->s.code == (BPF_LD|BPF_IMM)) { + struct slist *add, *tax, *ild; + + /* + * Check that X isn't used on exit from this + * block (which the optimizer might cause). + * We know the code generator won't generate + * any local dependencies. + */ + if (ATOMELEM(b->out_use, X_ATOM)) + continue; + + /* + * Check that the instruction following the ldi + * is an addx, or it's an ldxms with an addx + * following it (with 0 or more nops between the + * ldxms and addx). + */ + if (next->s.code != (BPF_LDX|BPF_MSH|BPF_B)) + add = next; + else + add = this_op(next->next); + if (add == 0 || add->s.code != (BPF_ALU|BPF_ADD|BPF_X)) + continue; + + /* + * Check that a tax follows that (with 0 or more + * nops between them). + */ + tax = this_op(add->next); + if (tax == 0 || tax->s.code != (BPF_MISC|BPF_TAX)) + continue; + + /* + * Check that an ild follows that (with 0 or more + * nops between them). + */ + ild = this_op(tax->next); + if (ild == 0 || BPF_CLASS(ild->s.code) != BPF_LD || + BPF_MODE(ild->s.code) != BPF_IND) + continue; + /* + * We want to turn this sequence: + * + * (004) ldi #0x2 {s} + * (005) ldxms [14] {next} -- optional + * (006) addx {add} + * (007) tax {tax} + * (008) ild [x+0] {ild} + * + * into this sequence: + * + * (004) nop + * (005) ldxms [14] + * (006) nop + * (007) nop + * (008) ild [x+2] + * + * XXX We need to check that X is not + * subsequently used, because we want to change + * what'll be in it after this sequence. + * + * We know we can eliminate the accumulator + * modifications earlier in the sequence since + * it is defined by the last stmt of this sequence + * (i.e., the last statement of the sequence loads + * a value into the accumulator, so we can eliminate + * earlier operations on the accumulator). + */ + ild->s.k += s->s.k; + s->s.code = NOP; + add->s.code = NOP; + tax->s.code = NOP; + done = 0; + } + } + /* + * If the comparison at the end of a block is an equality + * comparison against a constant, and nobody uses the value + * we leave in the A register at the end of a block, and + * the operation preceding the comparison is an arithmetic + * operation, we can sometime optimize it away. + */ + if (b->s.code == (BPF_JMP|BPF_JEQ|BPF_K) && + !ATOMELEM(b->out_use, A_ATOM)) { + /* + * We can optimize away certain subtractions of the + * X register. + */ + if (last->s.code == (BPF_ALU|BPF_SUB|BPF_X)) { + val = b->val[X_ATOM]; + if (vmap[val].is_const) { + /* + * If we have a subtract to do a comparison, + * and the X register is a known constant, + * we can merge this value into the + * comparison: + * + * sub x -> nop + * jeq #y jeq #(x+y) + */ + b->s.k += vmap[val].const_val; + last->s.code = NOP; + done = 0; + } else if (b->s.k == 0) { + /* + * If the X register isn't a constant, + * and the comparison in the test is + * against 0, we can compare with the + * X register, instead: + * + * sub x -> nop + * jeq #0 jeq x + */ + last->s.code = NOP; + b->s.code = BPF_JMP|BPF_JEQ|BPF_X; + done = 0; + } + } + /* + * Likewise, a constant subtract can be simplified: + * + * sub #x -> nop + * jeq #y -> jeq #(x+y) + */ + else if (last->s.code == (BPF_ALU|BPF_SUB|BPF_K)) { + last->s.code = NOP; + b->s.k += last->s.k; + done = 0; + } + /* + * And, similarly, a constant AND can be simplified + * if we're testing against 0, i.e.: + * + * and #k nop + * jeq #0 -> jset #k + */ + else if (last->s.code == (BPF_ALU|BPF_AND|BPF_K) && + b->s.k == 0) { + b->s.k = last->s.k; + b->s.code = BPF_JMP|BPF_K|BPF_JSET; + last->s.code = NOP; + done = 0; + opt_not(b); + } + } + /* + * jset #0 -> never + * jset #ffffffff -> always + */ + if (b->s.code == (BPF_JMP|BPF_K|BPF_JSET)) { + if (b->s.k == 0) + JT(b) = JF(b); + if (b->s.k == 0xffffffff) + JF(b) = JT(b); + } + /* + * If we're comparing against the index register, and the index + * register is a known constant, we can just compare against that + * constant. + */ + val = b->val[X_ATOM]; + if (vmap[val].is_const && BPF_SRC(b->s.code) == BPF_X) { + bpf_int32 v = vmap[val].const_val; + b->s.code &= ~BPF_X; + b->s.k = v; + } + /* + * If the accumulator is a known constant, we can compute the + * comparison result. + */ + val = b->val[A_ATOM]; + if (vmap[val].is_const && BPF_SRC(b->s.code) == BPF_K) { + bpf_int32 v = vmap[val].const_val; + switch (BPF_OP(b->s.code)) { + + case BPF_JEQ: + v = v == b->s.k; + break; + + case BPF_JGT: + v = (unsigned)v > b->s.k; + break; + + case BPF_JGE: + v = (unsigned)v >= b->s.k; + break; + + case BPF_JSET: + v &= b->s.k; + break; + + default: + abort(); + } + if (JF(b) != JT(b)) + done = 0; + if (v) + JF(b) = JT(b); + else + JT(b) = JF(b); + } +} + +/* + * Compute the symbolic value of expression of 's', and update + * anything it defines in the value table 'val'. If 'alter' is true, + * do various optimizations. This code would be cleaner if symbolic + * evaluation and code transformations weren't folded together. + */ +static void +opt_stmt(s, val, alter) + struct stmt *s; + int val[]; + int alter; +{ + int op; + int v; + + switch (s->code) { + + case BPF_LD|BPF_ABS|BPF_W: + case BPF_LD|BPF_ABS|BPF_H: + case BPF_LD|BPF_ABS|BPF_B: + v = F(s->code, s->k, 0L); + vstore(s, &val[A_ATOM], v, alter); + break; + + case BPF_LD|BPF_IND|BPF_W: + case BPF_LD|BPF_IND|BPF_H: + case BPF_LD|BPF_IND|BPF_B: + v = val[X_ATOM]; + if (alter && vmap[v].is_const) { + s->code = BPF_LD|BPF_ABS|BPF_SIZE(s->code); + s->k += vmap[v].const_val; + v = F(s->code, s->k, 0L); + done = 0; + } + else + v = F(s->code, s->k, v); + vstore(s, &val[A_ATOM], v, alter); + break; + + case BPF_LD|BPF_LEN: + v = F(s->code, 0L, 0L); + vstore(s, &val[A_ATOM], v, alter); + break; + + case BPF_LD|BPF_IMM: + v = K(s->k); + vstore(s, &val[A_ATOM], v, alter); + break; + + case BPF_LDX|BPF_IMM: + v = K(s->k); + vstore(s, &val[X_ATOM], v, alter); + break; + + case BPF_LDX|BPF_MSH|BPF_B: + v = F(s->code, s->k, 0L); + vstore(s, &val[X_ATOM], v, alter); + break; + + case BPF_ALU|BPF_NEG: + if (alter && vmap[val[A_ATOM]].is_const) { + s->code = BPF_LD|BPF_IMM; + s->k = -vmap[val[A_ATOM]].const_val; + val[A_ATOM] = K(s->k); + } + else + val[A_ATOM] = F(s->code, val[A_ATOM], 0L); + break; + + case BPF_ALU|BPF_ADD|BPF_K: + case BPF_ALU|BPF_SUB|BPF_K: + case BPF_ALU|BPF_MUL|BPF_K: + case BPF_ALU|BPF_DIV|BPF_K: + case BPF_ALU|BPF_AND|BPF_K: + case BPF_ALU|BPF_OR|BPF_K: + case BPF_ALU|BPF_LSH|BPF_K: + case BPF_ALU|BPF_RSH|BPF_K: + op = BPF_OP(s->code); + if (alter) { + if (s->k == 0) { + /* don't optimize away "sub #0" + * as it may be needed later to + * fixup the generated math code */ + if (op == BPF_ADD || + op == BPF_LSH || op == BPF_RSH || + op == BPF_OR) { + s->code = NOP; + break; + } + if (op == BPF_MUL || op == BPF_AND) { + s->code = BPF_LD|BPF_IMM; + val[A_ATOM] = K(s->k); + break; + } + } + if (vmap[val[A_ATOM]].is_const) { + fold_op(s, val[A_ATOM], K(s->k)); + val[A_ATOM] = K(s->k); + break; + } + } + val[A_ATOM] = F(s->code, val[A_ATOM], K(s->k)); + break; + + case BPF_ALU|BPF_ADD|BPF_X: + case BPF_ALU|BPF_SUB|BPF_X: + case BPF_ALU|BPF_MUL|BPF_X: + case BPF_ALU|BPF_DIV|BPF_X: + case BPF_ALU|BPF_AND|BPF_X: + case BPF_ALU|BPF_OR|BPF_X: + case BPF_ALU|BPF_LSH|BPF_X: + case BPF_ALU|BPF_RSH|BPF_X: + op = BPF_OP(s->code); + if (alter && vmap[val[X_ATOM]].is_const) { + if (vmap[val[A_ATOM]].is_const) { + fold_op(s, val[A_ATOM], val[X_ATOM]); + val[A_ATOM] = K(s->k); + } + else { + s->code = BPF_ALU|BPF_K|op; + s->k = vmap[val[X_ATOM]].const_val; + done = 0; + val[A_ATOM] = + F(s->code, val[A_ATOM], K(s->k)); + } + break; + } + /* + * Check if we're doing something to an accumulator + * that is 0, and simplify. This may not seem like + * much of a simplification but it could open up further + * optimizations. + * XXX We could also check for mul by 1, etc. + */ + if (alter && vmap[val[A_ATOM]].is_const + && vmap[val[A_ATOM]].const_val == 0) { + if (op == BPF_ADD || op == BPF_OR) { + s->code = BPF_MISC|BPF_TXA; + vstore(s, &val[A_ATOM], val[X_ATOM], alter); + break; + } + else if (op == BPF_MUL || op == BPF_DIV || + op == BPF_AND || op == BPF_LSH || op == BPF_RSH) { + s->code = BPF_LD|BPF_IMM; + s->k = 0; + vstore(s, &val[A_ATOM], K(s->k), alter); + break; + } + else if (op == BPF_NEG) { + s->code = NOP; + break; + } + } + val[A_ATOM] = F(s->code, val[A_ATOM], val[X_ATOM]); + break; + + case BPF_MISC|BPF_TXA: + vstore(s, &val[A_ATOM], val[X_ATOM], alter); + break; + + case BPF_LD|BPF_MEM: + v = val[s->k]; + if (alter && vmap[v].is_const) { + s->code = BPF_LD|BPF_IMM; + s->k = vmap[v].const_val; + done = 0; + } + vstore(s, &val[A_ATOM], v, alter); + break; + + case BPF_MISC|BPF_TAX: + vstore(s, &val[X_ATOM], val[A_ATOM], alter); + break; + + case BPF_LDX|BPF_MEM: + v = val[s->k]; + if (alter && vmap[v].is_const) { + s->code = BPF_LDX|BPF_IMM; + s->k = vmap[v].const_val; + done = 0; + } + vstore(s, &val[X_ATOM], v, alter); + break; + + case BPF_ST: + vstore(s, &val[s->k], val[A_ATOM], alter); + break; + + case BPF_STX: + vstore(s, &val[s->k], val[X_ATOM], alter); + break; + } +} + +static void +deadstmt(s, last) + register struct stmt *s; + register struct stmt *last[]; +{ + register int atom; + + atom = atomuse(s); + if (atom >= 0) { + if (atom == AX_ATOM) { + last[X_ATOM] = 0; + last[A_ATOM] = 0; + } + else + last[atom] = 0; + } + atom = atomdef(s); + if (atom >= 0) { + if (last[atom]) { + done = 0; + last[atom]->code = NOP; + } + last[atom] = s; + } +} + +static void +opt_deadstores(b) + register struct block *b; +{ + register struct slist *s; + register int atom; + struct stmt *last[N_ATOMS]; + + memset((char *)last, 0, sizeof last); + + for (s = b->stmts; s != 0; s = s->next) + deadstmt(&s->s, last); + deadstmt(&b->s, last); + + for (atom = 0; atom < N_ATOMS; ++atom) + if (last[atom] && !ATOMELEM(b->out_use, atom)) { + last[atom]->code = NOP; + done = 0; + } +} + +static void +opt_blk(b, do_stmts) + struct block *b; + int do_stmts; +{ + struct slist *s; + struct edge *p; + int i; + bpf_int32 aval, xval; + +#if 0 + for (s = b->stmts; s && s->next; s = s->next) + if (BPF_CLASS(s->s.code) == BPF_JMP) { + do_stmts = 0; + break; + } +#endif + + /* + * Initialize the atom values. + */ + p = b->in_edges; + if (p == 0) { + /* + * We have no predecessors, so everything is undefined + * upon entry to this block. + */ + memset((char *)b->val, 0, sizeof(b->val)); + } else { + /* + * Inherit values from our predecessors. + * + * First, get the values from the predecessor along the + * first edge leading to this node. + */ + memcpy((char *)b->val, (char *)p->pred->val, sizeof(b->val)); + /* + * Now look at all the other nodes leading to this node. + * If, for the predecessor along that edge, a register + * has a different value from the one we have (i.e., + * control paths are merging, and the merging paths + * assign different values to that register), give the + * register the undefined value of 0. + */ + while ((p = p->next) != NULL) { + for (i = 0; i < N_ATOMS; ++i) + if (b->val[i] != p->pred->val[i]) + b->val[i] = 0; + } + } + aval = b->val[A_ATOM]; + xval = b->val[X_ATOM]; + for (s = b->stmts; s; s = s->next) + opt_stmt(&s->s, b->val, do_stmts); + + /* + * This is a special case: if we don't use anything from this + * block, and we load the accumulator or index register with a + * value that is already there, or if this block is a return, + * eliminate all the statements. + * + * XXX - what if it does a store? + * + * XXX - why does it matter whether we use anything from this + * block? If the accumulator or index register doesn't change + * its value, isn't that OK even if we use that value? + * + * XXX - if we load the accumulator with a different value, + * and the block ends with a conditional branch, we obviously + * can't eliminate it, as the branch depends on that value. + * For the index register, the conditional branch only depends + * on the index register value if the test is against the index + * register value rather than a constant; if nothing uses the + * value we put into the index register, and we're not testing + * against the index register's value, and there aren't any + * other problems that would keep us from eliminating this + * block, can we eliminate it? + */ + if (do_stmts && + ((b->out_use == 0 && aval != 0 && b->val[A_ATOM] == aval && + xval != 0 && b->val[X_ATOM] == xval) || + BPF_CLASS(b->s.code) == BPF_RET)) { + if (b->stmts != 0) { + b->stmts = 0; + done = 0; + } + } else { + opt_peep(b); + opt_deadstores(b); + } + /* + * Set up values for branch optimizer. + */ + if (BPF_SRC(b->s.code) == BPF_K) + b->oval = K(b->s.k); + else + b->oval = b->val[X_ATOM]; + b->et.code = b->s.code; + b->ef.code = -b->s.code; +} + +/* + * Return true if any register that is used on exit from 'succ', has + * an exit value that is different from the corresponding exit value + * from 'b'. + */ +static int +use_conflict(b, succ) + struct block *b, *succ; +{ + int atom; + atomset use = succ->out_use; + + if (use == 0) + return 0; + + for (atom = 0; atom < N_ATOMS; ++atom) + if (ATOMELEM(use, atom)) + if (b->val[atom] != succ->val[atom]) + return 1; + return 0; +} + +static struct block * +fold_edge(child, ep) + struct block *child; + struct edge *ep; +{ + int sense; + int aval0, aval1, oval0, oval1; + int code = ep->code; + + if (code < 0) { + code = -code; + sense = 0; + } else + sense = 1; + + if (child->s.code != code) + return 0; + + aval0 = child->val[A_ATOM]; + oval0 = child->oval; + aval1 = ep->pred->val[A_ATOM]; + oval1 = ep->pred->oval; + + if (aval0 != aval1) + return 0; + + if (oval0 == oval1) + /* + * The operands of the branch instructions are + * identical, so the result is true if a true + * branch was taken to get here, otherwise false. + */ + return sense ? JT(child) : JF(child); + + if (sense && code == (BPF_JMP|BPF_JEQ|BPF_K)) + /* + * At this point, we only know the comparison if we + * came down the true branch, and it was an equality + * comparison with a constant. + * + * I.e., if we came down the true branch, and the branch + * was an equality comparison with a constant, we know the + * accumulator contains that constant. If we came down + * the false branch, or the comparison wasn't with a + * constant, we don't know what was in the accumulator. + * + * We rely on the fact that distinct constants have distinct + * value numbers. + */ + return JF(child); + + return 0; +} + +static void +opt_j(ep) + struct edge *ep; +{ + register int i, k; + register struct block *target; + + if (JT(ep->succ) == 0) + return; + + if (JT(ep->succ) == JF(ep->succ)) { + /* + * Common branch targets can be eliminated, provided + * there is no data dependency. + */ + if (!use_conflict(ep->pred, ep->succ->et.succ)) { + done = 0; + ep->succ = JT(ep->succ); + } + } + /* + * For each edge dominator that matches the successor of this + * edge, promote the edge successor to the its grandchild. + * + * XXX We violate the set abstraction here in favor a reasonably + * efficient loop. + */ + top: + for (i = 0; i < edgewords; ++i) { + register bpf_u_int32 x = ep->edom[i]; + + while (x != 0) { + k = ffs(x) - 1; + x &=~ (1 << k); + k += i * BITS_PER_WORD; + + target = fold_edge(ep->succ, edges[k]); + /* + * Check that there is no data dependency between + * nodes that will be violated if we move the edge. + */ + if (target != 0 && !use_conflict(ep->pred, target)) { + done = 0; + ep->succ = target; + if (JT(target) != 0) + /* + * Start over unless we hit a leaf. + */ + goto top; + return; + } + } + } +} + + +static void +or_pullup(b) + struct block *b; +{ + int val, at_top; + struct block *pull; + struct block **diffp, **samep; + struct edge *ep; + + ep = b->in_edges; + if (ep == 0) + return; + + /* + * Make sure each predecessor loads the same value. + * XXX why? + */ + val = ep->pred->val[A_ATOM]; + for (ep = ep->next; ep != 0; ep = ep->next) + if (val != ep->pred->val[A_ATOM]) + return; + + if (JT(b->in_edges->pred) == b) + diffp = &JT(b->in_edges->pred); + else + diffp = &JF(b->in_edges->pred); + + at_top = 1; + while (1) { + if (*diffp == 0) + return; + + if (JT(*diffp) != JT(b)) + return; + + if (!SET_MEMBER((*diffp)->dom, b->id)) + return; + + if ((*diffp)->val[A_ATOM] != val) + break; + + diffp = &JF(*diffp); + at_top = 0; + } + samep = &JF(*diffp); + while (1) { + if (*samep == 0) + return; + + if (JT(*samep) != JT(b)) + return; + + if (!SET_MEMBER((*samep)->dom, b->id)) + return; + + if ((*samep)->val[A_ATOM] == val) + break; + + /* XXX Need to check that there are no data dependencies + between dp0 and dp1. Currently, the code generator + will not produce such dependencies. */ + samep = &JF(*samep); + } +#ifdef notdef + /* XXX This doesn't cover everything. */ + for (i = 0; i < N_ATOMS; ++i) + if ((*samep)->val[i] != pred->val[i]) + return; +#endif + /* Pull up the node. */ + pull = *samep; + *samep = JF(pull); + JF(pull) = *diffp; + + /* + * At the top of the chain, each predecessor needs to point at the + * pulled up node. Inside the chain, there is only one predecessor + * to worry about. + */ + if (at_top) { + for (ep = b->in_edges; ep != 0; ep = ep->next) { + if (JT(ep->pred) == b) + JT(ep->pred) = pull; + else + JF(ep->pred) = pull; + } + } + else + *diffp = pull; + + done = 0; +} + +static void +and_pullup(b) + struct block *b; +{ + int val, at_top; + struct block *pull; + struct block **diffp, **samep; + struct edge *ep; + + ep = b->in_edges; + if (ep == 0) + return; + + /* + * Make sure each predecessor loads the same value. + */ + val = ep->pred->val[A_ATOM]; + for (ep = ep->next; ep != 0; ep = ep->next) + if (val != ep->pred->val[A_ATOM]) + return; + + if (JT(b->in_edges->pred) == b) + diffp = &JT(b->in_edges->pred); + else + diffp = &JF(b->in_edges->pred); + + at_top = 1; + while (1) { + if (*diffp == 0) + return; + + if (JF(*diffp) != JF(b)) + return; + + if (!SET_MEMBER((*diffp)->dom, b->id)) + return; + + if ((*diffp)->val[A_ATOM] != val) + break; + + diffp = &JT(*diffp); + at_top = 0; + } + samep = &JT(*diffp); + while (1) { + if (*samep == 0) + return; + + if (JF(*samep) != JF(b)) + return; + + if (!SET_MEMBER((*samep)->dom, b->id)) + return; + + if ((*samep)->val[A_ATOM] == val) + break; + + /* XXX Need to check that there are no data dependencies + between diffp and samep. Currently, the code generator + will not produce such dependencies. */ + samep = &JT(*samep); + } +#ifdef notdef + /* XXX This doesn't cover everything. */ + for (i = 0; i < N_ATOMS; ++i) + if ((*samep)->val[i] != pred->val[i]) + return; +#endif + /* Pull up the node. */ + pull = *samep; + *samep = JT(pull); + JT(pull) = *diffp; + + /* + * At the top of the chain, each predecessor needs to point at the + * pulled up node. Inside the chain, there is only one predecessor + * to worry about. + */ + if (at_top) { + for (ep = b->in_edges; ep != 0; ep = ep->next) { + if (JT(ep->pred) == b) + JT(ep->pred) = pull; + else + JF(ep->pred) = pull; + } + } + else + *diffp = pull; + + done = 0; +} + +static void +opt_blks(root, do_stmts) + struct block *root; + int do_stmts; +{ + int i, maxlevel; + struct block *p; + + init_val(); + maxlevel = root->level; + + find_inedges(root); + for (i = maxlevel; i >= 0; --i) + for (p = levels[i]; p; p = p->link) + opt_blk(p, do_stmts); + + if (do_stmts) + /* + * No point trying to move branches; it can't possibly + * make a difference at this point. + */ + return; + + for (i = 1; i <= maxlevel; ++i) { + for (p = levels[i]; p; p = p->link) { + opt_j(&p->et); + opt_j(&p->ef); + } + } + + find_inedges(root); + for (i = 1; i <= maxlevel; ++i) { + for (p = levels[i]; p; p = p->link) { + or_pullup(p); + and_pullup(p); + } + } +} + +static inline void +link_inedge(parent, child) + struct edge *parent; + struct block *child; +{ + parent->next = child->in_edges; + child->in_edges = parent; +} + +static void +find_inedges(root) + struct block *root; +{ + int i; + struct block *b; + + for (i = 0; i < n_blocks; ++i) + blocks[i]->in_edges = 0; + + /* + * Traverse the graph, adding each edge to the predecessor + * list of its successors. Skip the leaves (i.e. level 0). + */ + for (i = root->level; i > 0; --i) { + for (b = levels[i]; b != 0; b = b->link) { + link_inedge(&b->et, JT(b)); + link_inedge(&b->ef, JF(b)); + } + } +} + +static void +opt_root(b) + struct block **b; +{ + struct slist *tmp, *s; + + s = (*b)->stmts; + (*b)->stmts = 0; + while (BPF_CLASS((*b)->s.code) == BPF_JMP && JT(*b) == JF(*b)) + *b = JT(*b); + + tmp = (*b)->stmts; + if (tmp != 0) + sappend(s, tmp); + (*b)->stmts = s; + + /* + * If the root node is a return, then there is no + * point executing any statements (since the bpf machine + * has no side effects). + */ + if (BPF_CLASS((*b)->s.code) == BPF_RET) + (*b)->stmts = 0; +} + +static void +opt_loop(root, do_stmts) + struct block *root; + int do_stmts; +{ + +#ifdef BDEBUG + if (dflag > 1) { + printf("opt_loop(root, %d) begin\n", do_stmts); + opt_dump(root); + } +#endif + do { + done = 1; + find_levels(root); + find_dom(root); + find_closure(root); + find_ud(root); + find_edom(root); + opt_blks(root, do_stmts); +#ifdef BDEBUG + if (dflag > 1) { + printf("opt_loop(root, %d) bottom, done=%d\n", do_stmts, done); + opt_dump(root); + } +#endif + } while (!done); +} + +/* + * Optimize the filter code in its dag representation. + */ +void +bpf_optimize(rootp) + struct block **rootp; +{ + struct block *root; + + root = *rootp; + + opt_init(root); + opt_loop(root, 0); + opt_loop(root, 1); + intern_blocks(root); +#ifdef BDEBUG + if (dflag > 1) { + printf("after intern_blocks()\n"); + opt_dump(root); + } +#endif + opt_root(rootp); +#ifdef BDEBUG + if (dflag > 1) { + printf("after opt_root()\n"); + opt_dump(root); + } +#endif + opt_cleanup(); +} + +static void +make_marks(p) + struct block *p; +{ + if (!isMarked(p)) { + Mark(p); + if (BPF_CLASS(p->s.code) != BPF_RET) { + make_marks(JT(p)); + make_marks(JF(p)); + } + } +} + +/* + * Mark code array such that isMarked(i) is true + * only for nodes that are alive. + */ +static void +mark_code(p) + struct block *p; +{ + cur_mark += 1; + make_marks(p); +} + +/* + * True iff the two stmt lists load the same value from the packet into + * the accumulator. + */ +static int +eq_slist(x, y) + struct slist *x, *y; +{ + while (1) { + while (x && x->s.code == NOP) + x = x->next; + while (y && y->s.code == NOP) + y = y->next; + if (x == 0) + return y == 0; + if (y == 0) + return x == 0; + if (x->s.code != y->s.code || x->s.k != y->s.k) + return 0; + x = x->next; + y = y->next; + } +} + +static inline int +eq_blk(b0, b1) + struct block *b0, *b1; +{ + if (b0->s.code == b1->s.code && + b0->s.k == b1->s.k && + b0->et.succ == b1->et.succ && + b0->ef.succ == b1->ef.succ) + return eq_slist(b0->stmts, b1->stmts); + return 0; +} + +static void +intern_blocks(root) + struct block *root; +{ + struct block *p; + int i, j; + int done1; /* don't shadow global */ + top: + done1 = 1; + for (i = 0; i < n_blocks; ++i) + blocks[i]->link = 0; + + mark_code(root); + + for (i = n_blocks - 1; --i >= 0; ) { + if (!isMarked(blocks[i])) + continue; + for (j = i + 1; j < n_blocks; ++j) { + if (!isMarked(blocks[j])) + continue; + if (eq_blk(blocks[i], blocks[j])) { + blocks[i]->link = blocks[j]->link ? + blocks[j]->link : blocks[j]; + break; + } + } + } + for (i = 0; i < n_blocks; ++i) { + p = blocks[i]; + if (JT(p) == 0) + continue; + if (JT(p)->link) { + done1 = 0; + JT(p) = JT(p)->link; + } + if (JF(p)->link) { + done1 = 0; + JF(p) = JF(p)->link; + } + } + if (!done1) + goto top; +} + +static void +opt_cleanup() +{ + free((void *)vnode_base); + free((void *)vmap); + free((void *)edges); + free((void *)space); + free((void *)levels); + free((void *)blocks); +} + +/* + * Return the number of stmts in 's'. + */ +static u_int +slength(s) + struct slist *s; +{ + u_int n = 0; + + for (; s; s = s->next) + if (s->s.code != NOP) + ++n; + return n; +} + +/* + * Return the number of nodes reachable by 'p'. + * All nodes should be initially unmarked. + */ +static int +count_blocks(p) + struct block *p; +{ + if (p == 0 || isMarked(p)) + return 0; + Mark(p); + return count_blocks(JT(p)) + count_blocks(JF(p)) + 1; +} + +/* + * Do a depth first search on the flow graph, numbering the + * the basic blocks, and entering them into the 'blocks' array.` + */ +static void +number_blks_r(p) + struct block *p; +{ + int n; + + if (p == 0 || isMarked(p)) + return; + + Mark(p); + n = n_blocks++; + p->id = n; + blocks[n] = p; + + number_blks_r(JT(p)); + number_blks_r(JF(p)); +} + +/* + * Return the number of stmts in the flowgraph reachable by 'p'. + * The nodes should be unmarked before calling. + * + * Note that "stmts" means "instructions", and that this includes + * + * side-effect statements in 'p' (slength(p->stmts)); + * + * statements in the true branch from 'p' (count_stmts(JT(p))); + * + * statements in the false branch from 'p' (count_stmts(JF(p))); + * + * the conditional jump itself (1); + * + * an extra long jump if the true branch requires it (p->longjt); + * + * an extra long jump if the false branch requires it (p->longjf). + */ +static u_int +count_stmts(p) + struct block *p; +{ + u_int n; + + if (p == 0 || isMarked(p)) + return 0; + Mark(p); + n = count_stmts(JT(p)) + count_stmts(JF(p)); + return slength(p->stmts) + n + 1 + p->longjt + p->longjf; +} + +/* + * Allocate memory. All allocation is done before optimization + * is begun. A linear bound on the size of all data structures is computed + * from the total number of blocks and/or statements. + */ +static void +opt_init(root) + struct block *root; +{ + bpf_u_int32 *p; + int i, n, max_stmts; + + /* + * First, count the blocks, so we can malloc an array to map + * block number to block. Then, put the blocks into the array. + */ + unMarkAll(); + n = count_blocks(root); + blocks = (struct block **)calloc(n, sizeof(*blocks)); + if (blocks == NULL) + bpf_error("malloc"); + unMarkAll(); + n_blocks = 0; + number_blks_r(root); + + n_edges = 2 * n_blocks; + edges = (struct edge **)calloc(n_edges, sizeof(*edges)); + if (edges == NULL) + bpf_error("malloc"); + + /* + * The number of levels is bounded by the number of nodes. + */ + levels = (struct block **)calloc(n_blocks, sizeof(*levels)); + if (levels == NULL) + bpf_error("malloc"); + + edgewords = n_edges / (8 * sizeof(bpf_u_int32)) + 1; + nodewords = n_blocks / (8 * sizeof(bpf_u_int32)) + 1; + + /* XXX */ + space = (bpf_u_int32 *)malloc(2 * n_blocks * nodewords * sizeof(*space) + + n_edges * edgewords * sizeof(*space)); + if (space == NULL) + bpf_error("malloc"); + p = space; + all_dom_sets = p; + for (i = 0; i < n; ++i) { + blocks[i]->dom = p; + p += nodewords; + } + all_closure_sets = p; + for (i = 0; i < n; ++i) { + blocks[i]->closure = p; + p += nodewords; + } + all_edge_sets = p; + for (i = 0; i < n; ++i) { + register struct block *b = blocks[i]; + + b->et.edom = p; + p += edgewords; + b->ef.edom = p; + p += edgewords; + b->et.id = i; + edges[i] = &b->et; + b->ef.id = n_blocks + i; + edges[n_blocks + i] = &b->ef; + b->et.pred = b; + b->ef.pred = b; + } + max_stmts = 0; + for (i = 0; i < n; ++i) + max_stmts += slength(blocks[i]->stmts) + 1; + /* + * We allocate at most 3 value numbers per statement, + * so this is an upper bound on the number of valnodes + * we'll need. + */ + maxval = 3 * max_stmts; + vmap = (struct vmapinfo *)calloc(maxval, sizeof(*vmap)); + vnode_base = (struct valnode *)calloc(maxval, sizeof(*vnode_base)); + if (vmap == NULL || vnode_base == NULL) + bpf_error("malloc"); +} + +/* + * Some pointers used to convert the basic block form of the code, + * into the array form that BPF requires. 'fstart' will point to + * the malloc'd array while 'ftail' is used during the recursive traversal. + */ +static struct bpf_insn *fstart; +static struct bpf_insn *ftail; + +#ifdef BDEBUG +int bids[1000]; +#endif + +/* + * Returns true if successful. Returns false if a branch has + * an offset that is too large. If so, we have marked that + * branch so that on a subsequent iteration, it will be treated + * properly. + */ +static int +convert_code_r(p) + struct block *p; +{ + struct bpf_insn *dst; + struct slist *src; + int slen; + u_int off; + int extrajmps; /* number of extra jumps inserted */ + struct slist **offset = NULL; + + if (p == 0 || isMarked(p)) + return (1); + Mark(p); + + if (convert_code_r(JF(p)) == 0) + return (0); + if (convert_code_r(JT(p)) == 0) + return (0); + + slen = slength(p->stmts); + dst = ftail -= (slen + 1 + p->longjt + p->longjf); + /* inflate length by any extra jumps */ + + p->offset = dst - fstart; + + /* generate offset[] for convenience */ + if (slen) { + offset = (struct slist **)calloc(slen, sizeof(struct slist *)); + if (!offset) { + bpf_error("not enough core"); + /*NOTREACHED*/ + } + } + src = p->stmts; + for (off = 0; off < slen && src; off++) { +#if 0 + printf("off=%d src=%x\n", off, src); +#endif + offset[off] = src; + src = src->next; + } + + off = 0; + for (src = p->stmts; src; src = src->next) { + if (src->s.code == NOP) + continue; + dst->code = (u_short)src->s.code; + dst->k = src->s.k; + + /* fill block-local relative jump */ + if (BPF_CLASS(src->s.code) != BPF_JMP || src->s.code == (BPF_JMP|BPF_JA)) { +#if 0 + if (src->s.jt || src->s.jf) { + bpf_error("illegal jmp destination"); + /*NOTREACHED*/ + } +#endif + goto filled; + } + if (off == slen - 2) /*???*/ + goto filled; + + { + int i; + int jt, jf; + const char *ljerr = "%s for block-local relative jump: off=%d"; + +#if 0 + printf("code=%x off=%d %x %x\n", src->s.code, + off, src->s.jt, src->s.jf); +#endif + + if (!src->s.jt || !src->s.jf) { + bpf_error(ljerr, "no jmp destination", off); + /*NOTREACHED*/ + } + + jt = jf = 0; + for (i = 0; i < slen; i++) { + if (offset[i] == src->s.jt) { + if (jt) { + bpf_error(ljerr, "multiple matches", off); + /*NOTREACHED*/ + } + + dst->jt = i - off - 1; + jt++; + } + if (offset[i] == src->s.jf) { + if (jf) { + bpf_error(ljerr, "multiple matches", off); + /*NOTREACHED*/ + } + dst->jf = i - off - 1; + jf++; + } + } + if (!jt || !jf) { + bpf_error(ljerr, "no destination found", off); + /*NOTREACHED*/ + } + } +filled: + ++dst; + ++off; + } + if (offset) + free(offset); + +#ifdef BDEBUG + bids[dst - fstart] = p->id + 1; +#endif + dst->code = (u_short)p->s.code; + dst->k = p->s.k; + if (JT(p)) { + extrajmps = 0; + off = JT(p)->offset - (p->offset + slen) - 1; + if (off >= 256) { + /* offset too large for branch, must add a jump */ + if (p->longjt == 0) { + /* mark this instruction and retry */ + p->longjt++; + return(0); + } + /* branch if T to following jump */ + dst->jt = extrajmps; + extrajmps++; + dst[extrajmps].code = BPF_JMP|BPF_JA; + dst[extrajmps].k = off - extrajmps; + } + else + dst->jt = off; + off = JF(p)->offset - (p->offset + slen) - 1; + if (off >= 256) { + /* offset too large for branch, must add a jump */ + if (p->longjf == 0) { + /* mark this instruction and retry */ + p->longjf++; + return(0); + } + /* branch if F to following jump */ + /* if two jumps are inserted, F goes to second one */ + dst->jf = extrajmps; + extrajmps++; + dst[extrajmps].code = BPF_JMP|BPF_JA; + dst[extrajmps].k = off - extrajmps; + } + else + dst->jf = off; + } + return (1); +} + + +/* + * Convert flowgraph intermediate representation to the + * BPF array representation. Set *lenp to the number of instructions. + * + * This routine does *NOT* leak the memory pointed to by fp. It *must + * not* do free(fp) before returning fp; doing so would make no sense, + * as the BPF array pointed to by the return value of icode_to_fcode() + * must be valid - it's being returned for use in a bpf_program structure. + * + * If it appears that icode_to_fcode() is leaking, the problem is that + * the program using pcap_compile() is failing to free the memory in + * the BPF program when it's done - the leak is in the program, not in + * the routine that happens to be allocating the memory. (By analogy, if + * a program calls fopen() without ever calling fclose() on the FILE *, + * it will leak the FILE structure; the leak is not in fopen(), it's in + * the program.) Change the program to use pcap_freecode() when it's + * done with the filter program. See the pcap man page. + */ +struct bpf_insn * +icode_to_fcode(root, lenp) + struct block *root; + u_int *lenp; +{ + u_int n; + struct bpf_insn *fp; + + /* + * Loop doing convert_code_r() until no branches remain + * with too-large offsets. + */ + while (1) { + unMarkAll(); + n = *lenp = count_stmts(root); + + fp = (struct bpf_insn *)malloc(sizeof(*fp) * n); + if (fp == NULL) + bpf_error("malloc"); + memset((char *)fp, 0, sizeof(*fp) * n); + fstart = fp; + ftail = fp + n; + + unMarkAll(); + if (convert_code_r(root)) + break; + free(fp); + } + + return fp; +} + +/* + * Make a copy of a BPF program and put it in the "fcode" member of + * a "pcap_t". + * + * If we fail to allocate memory for the copy, fill in the "errbuf" + * member of the "pcap_t" with an error message, and return -1; + * otherwise, return 0. + */ +int +install_bpf_program(pcap_t *p, struct bpf_program *fp) +{ + size_t prog_size; + + /* + * Validate the program. + */ + if (!bpf_validate(fp->bf_insns, fp->bf_len)) { + snprintf(p->errbuf, sizeof(p->errbuf), + "BPF program is not valid"); + return (-1); + } + + /* + * Free up any already installed program. + */ + pcap_freecode(&p->fcode); + + prog_size = sizeof(*fp->bf_insns) * fp->bf_len; + p->fcode.bf_len = fp->bf_len; + p->fcode.bf_insns = (struct bpf_insn *)malloc(prog_size); + if (p->fcode.bf_insns == NULL) { + snprintf(p->errbuf, sizeof(p->errbuf), + "malloc: %s", pcap_strerror(errno)); + return (-1); + } + memcpy(p->fcode.bf_insns, fp->bf_insns, prog_size); + return (0); +} + +#ifdef BDEBUG +static void +opt_dump(root) + struct block *root; +{ + struct bpf_program f; + + memset(bids, 0, sizeof bids); + f.bf_insns = icode_to_fcode(root, &f.bf_len); + bpf_dump(&f, 1); + putchar('\n'); + free((char *)f.bf_insns); +} +#endif diff --git a/org.tcpdump.chmod_bpf.plist b/org.tcpdump.chmod_bpf.plist new file mode 100644 index 0000000..8ad6852 --- /dev/null +++ b/org.tcpdump.chmod_bpf.plist @@ -0,0 +1,16 @@ + + + + + Label + org.tcpdump.chmod_bpf + RunAtLoad + + Program + /usr/local/bin/chmod_bpf + ProgramArguments + + /usr/local/bin/chmod_bpf + + + diff --git a/packaging/pcap.spec.in b/packaging/pcap.spec.in new file mode 100644 index 0000000..ff7b996 --- /dev/null +++ b/packaging/pcap.spec.in @@ -0,0 +1,77 @@ +%define prefix /usr +%define version @VERSION@ + +Summary: A system-independent interface for user-level packet capture +Name: libpcap +Version: %version +Release: 1 +Group: Development/Libraries +License: BSD with advertising +Source: @NAME@.tar.gz +BuildRoot: /tmp/%{name}-buildroot +URL: http://www.tcpdump.org + +Source: http://www.tcpdump.org/release/%{name}-%{version}.tar.gz + +%description +Libpcap provides a portable framework for low-level network +monitoring. Libpcap can provide network statistics collection, +security monitoring and network debugging. Since almost every system +vendor provides a different interface for packet capture, the libpcap +authors created this system-independent API to ease in porting and to +alleviate the need for several system-dependent packet capture modules +in each application. + +Install libpcap if you need to do low-level network traffic monitoring +on your network. + +%package devel +Summary: Libraries and header files for the libpcap library +Group: Development/Libraries + +%description devel +Libpcap provides a portable framework for low-level network +monitoring. Libpcap can provide network statistics collection, +security monitoring and network debugging. Since almost every system +vendor provides a different interface for packet capture, the libpcap +authors created this system-independent API to ease in porting and to +alleviate the need for several system-dependent packet capture modules +in each application. + +This package provides the libraries, include files, and other +resources needed for developing libpcap applications. + +%prep +%setup -q + +%build +export CFLAGS="$RPM_OPT_FLAGS -fno-strict-aliasing" +%configure +make %{?_smp_mflags} + +%install +rm -rf $RPM_BUILD_ROOT + +make DESTDIR=$RPM_BUILD_ROOT install + +%clean +rm -rf $RPM_BUILD_ROOT + +%files +%defattr(-,root,root) +%doc LICENSE README CHANGES INSTALL.txt README.linux TODO VERSION CREDITS packaging/pcap.spec +%{_libdir}/libpcap.so.* +%{_mandir}/man7/pcap*.7* + +%files devel +%defattr(-,root,root) +%{_bindir}/pcap-config +%{_includedir}/pcap/*.h +%{_includedir}/pcap.h +%{_includedir}/pcap-bpf.h +%{_includedir}/pcap-namedb.h +%{_libdir}/libpcap.so +%{_libdir}/libpcap.a +%{_mandir}/man1/pcap-config.1* +%{_mandir}/man3/pcap*.3* +%{_mandir}/man5/pcap*.5* diff --git a/pcap-bpf.c b/pcap-bpf.c new file mode 100644 index 0000000..944445f --- /dev/null +++ b/pcap-bpf.c @@ -0,0 +1,2732 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1998 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-bpf.c,v 1.116 2008-09-16 18:42:29 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include /* optionally get BSD define */ +#ifdef HAVE_ZEROCOPY_BPF +#include +#endif +#include +#include +/* + * defines ioctls, but doesn't include . + * + * We include as it might be necessary to declare ioctl(); + * at least on *BSD and Mac OS X, it also defines various SIOC ioctls - + * we could include , but if we're already including + * , which includes on those platforms, + * there's not much point in doing so. + * + * If we have , we include it as well, to handle systems + * such as Solaris which don't arrange to include if you + * include + */ +#include +#ifdef HAVE_SYS_IOCCOM_H +#include +#endif +#include + +#ifdef HAVE_ZEROCOPY_BPF +#include +#endif + +#include + +#ifdef _AIX + +/* + * Make "pcap.h" not include "pcap/bpf.h"; we are going to include the + * native OS version, as we need "struct bpf_config" from it. + */ +#define PCAP_DONT_INCLUDE_PCAP_BPF_H + +#include + +/* + * Prevent bpf.h from redefining the DLT_ values to their + * IFT_ values, as we're going to return the standard libpcap + * values, not IBM's non-standard IFT_ values. + */ +#undef _AIX +#include +#define _AIX + +#include /* for IFT_ values */ +#include +#include +#include +#include + +#ifdef __64BIT__ +#define domakedev makedev64 +#define getmajor major64 +#define bpf_hdr bpf_hdr32 +#else /* __64BIT__ */ +#define domakedev makedev +#define getmajor major +#endif /* __64BIT__ */ + +#define BPF_NAME "bpf" +#define BPF_MINORS 4 +#define DRIVER_PATH "/usr/lib/drivers" +#define BPF_NODE "/dev/bpf" +static int bpfloadedflag = 0; +static int odmlockid = 0; + +static int bpf_load(char *errbuf); + +#else /* _AIX */ + +#include + +#endif /* _AIX */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef HAVE_NET_IF_MEDIA_H +# include +#endif + +#include "pcap-int.h" + +#ifdef HAVE_DAG_API +#include "pcap-dag.h" +#endif /* HAVE_DAG_API */ + +#ifdef HAVE_SNF_API +#include "pcap-snf.h" +#endif /* HAVE_SNF_API */ + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +#ifdef BIOCGDLTLIST +# if (defined(HAVE_NET_IF_MEDIA_H) && defined(IFM_IEEE80211)) && !defined(__APPLE__) +#define HAVE_BSD_IEEE80211 +# endif + +# if defined(__APPLE__) || defined(HAVE_BSD_IEEE80211) +static int find_802_11(struct bpf_dltlist *); + +# ifdef HAVE_BSD_IEEE80211 +static int monitor_mode(pcap_t *, int); +# endif + +# if defined(__APPLE__) +static void remove_en(pcap_t *); +static void remove_802_11(pcap_t *); +# endif + +# endif /* defined(__APPLE__) || defined(HAVE_BSD_IEEE80211) */ + +#endif /* BIOCGDLTLIST */ + +#if defined(sun) && defined(LIFNAMSIZ) && defined(lifr_zoneid) +#include +#endif + +/* + * We include the OS's , not our "pcap/bpf.h", so we probably + * don't get DLT_DOCSIS defined. + */ +#ifndef DLT_DOCSIS +#define DLT_DOCSIS 143 +#endif + +/* + * On OS X, we don't even get any of the 802.11-plus-radio-header DLT_'s + * defined, even though some of them are used by various Airport drivers. + */ +#ifndef DLT_PRISM_HEADER +#define DLT_PRISM_HEADER 119 +#endif +#ifndef DLT_AIRONET_HEADER +#define DLT_AIRONET_HEADER 120 +#endif +#ifndef DLT_IEEE802_11_RADIO +#define DLT_IEEE802_11_RADIO 127 +#endif +#ifndef DLT_IEEE802_11_RADIO_AVS +#define DLT_IEEE802_11_RADIO_AVS 163 +#endif + +static int pcap_can_set_rfmon_bpf(pcap_t *p); +static int pcap_activate_bpf(pcap_t *p); +static int pcap_setfilter_bpf(pcap_t *p, struct bpf_program *fp); +static int pcap_setdirection_bpf(pcap_t *, pcap_direction_t); +static int pcap_set_datalink_bpf(pcap_t *p, int dlt); + +/* + * For zerocopy bpf, the setnonblock/getnonblock routines need to modify + * p->md.timeout so we don't call select(2) if the pcap handle is in non- + * blocking mode. We preserve the timeout supplied by pcap_open functions + * to make sure it does not get clobbered if the pcap handle moves between + * blocking and non-blocking mode. + */ +static int +pcap_getnonblock_bpf(pcap_t *p, char *errbuf) +{ +#ifdef HAVE_ZEROCOPY_BPF + if (p->md.zerocopy) { + /* + * Use a negative value for the timeout to represent that the + * pcap handle is in non-blocking mode. + */ + return (p->md.timeout < 0); + } +#endif + return (pcap_getnonblock_fd(p, errbuf)); +} + +static int +pcap_setnonblock_bpf(pcap_t *p, int nonblock, char *errbuf) +{ +#ifdef HAVE_ZEROCOPY_BPF + if (p->md.zerocopy) { + /* + * Map each value to the corresponding 2's complement, to + * preserve the timeout value provided with pcap_set_timeout. + * (from pcap-linux.c). + */ + if (nonblock) { + if (p->md.timeout >= 0) { + /* + * Timeout is non-negative, so we're not + * currently in non-blocking mode; set it + * to the 2's complement, to make it + * negative, as an indication that we're + * in non-blocking mode. + */ + p->md.timeout = p->md.timeout * -1 - 1; + } + } else { + if (p->md.timeout < 0) { + /* + * Timeout is negative, so we're currently + * in blocking mode; reverse the previous + * operation, to make the timeout non-negative + * again. + */ + p->md.timeout = (p->md.timeout + 1) * -1; + } + } + return (0); + } +#endif + return (pcap_setnonblock_fd(p, nonblock, errbuf)); +} + +#ifdef HAVE_ZEROCOPY_BPF +/* + * Zero-copy BPF buffer routines to check for and acknowledge BPF data in + * shared memory buffers. + * + * pcap_next_zbuf_shm(): Check for a newly available shared memory buffer, + * and set up p->buffer and cc to reflect one if available. Notice that if + * there was no prior buffer, we select zbuf1 as this will be the first + * buffer filled for a fresh BPF session. + */ +static int +pcap_next_zbuf_shm(pcap_t *p, int *cc) +{ + struct bpf_zbuf_header *bzh; + + if (p->md.zbuffer == p->md.zbuf2 || p->md.zbuffer == NULL) { + bzh = (struct bpf_zbuf_header *)p->md.zbuf1; + if (bzh->bzh_user_gen != + atomic_load_acq_int(&bzh->bzh_kernel_gen)) { + p->md.bzh = bzh; + p->md.zbuffer = (u_char *)p->md.zbuf1; + p->buffer = p->md.zbuffer + sizeof(*bzh); + *cc = bzh->bzh_kernel_len; + return (1); + } + } else if (p->md.zbuffer == p->md.zbuf1) { + bzh = (struct bpf_zbuf_header *)p->md.zbuf2; + if (bzh->bzh_user_gen != + atomic_load_acq_int(&bzh->bzh_kernel_gen)) { + p->md.bzh = bzh; + p->md.zbuffer = (u_char *)p->md.zbuf2; + p->buffer = p->md.zbuffer + sizeof(*bzh); + *cc = bzh->bzh_kernel_len; + return (1); + } + } + *cc = 0; + return (0); +} + +/* + * pcap_next_zbuf() -- Similar to pcap_next_zbuf_shm(), except wait using + * select() for data or a timeout, and possibly force rotation of the buffer + * in the event we time out or are in immediate mode. Invoke the shared + * memory check before doing system calls in order to avoid doing avoidable + * work. + */ +static int +pcap_next_zbuf(pcap_t *p, int *cc) +{ + struct bpf_zbuf bz; + struct timeval tv; + struct timespec cur; + fd_set r_set; + int data, r; + int expire, tmout; + +#define TSTOMILLI(ts) (((ts)->tv_sec * 1000) + ((ts)->tv_nsec / 1000000)) + /* + * Start out by seeing whether anything is waiting by checking the + * next shared memory buffer for data. + */ + data = pcap_next_zbuf_shm(p, cc); + if (data) + return (data); + /* + * If a previous sleep was interrupted due to signal delivery, make + * sure that the timeout gets adjusted accordingly. This requires + * that we analyze when the timeout should be been expired, and + * subtract the current time from that. If after this operation, + * our timeout is less then or equal to zero, handle it like a + * regular timeout. + */ + tmout = p->md.timeout; + if (tmout) + (void) clock_gettime(CLOCK_MONOTONIC, &cur); + if (p->md.interrupted && p->md.timeout) { + expire = TSTOMILLI(&p->md.firstsel) + p->md.timeout; + tmout = expire - TSTOMILLI(&cur); +#undef TSTOMILLI + if (tmout <= 0) { + p->md.interrupted = 0; + data = pcap_next_zbuf_shm(p, cc); + if (data) + return (data); + if (ioctl(p->fd, BIOCROTZBUF, &bz) < 0) { + (void) snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "BIOCROTZBUF: %s", strerror(errno)); + return (PCAP_ERROR); + } + return (pcap_next_zbuf_shm(p, cc)); + } + } + /* + * No data in the buffer, so must use select() to wait for data or + * the next timeout. Note that we only call select if the handle + * is in blocking mode. + */ + if (p->md.timeout >= 0) { + FD_ZERO(&r_set); + FD_SET(p->fd, &r_set); + if (tmout != 0) { + tv.tv_sec = tmout / 1000; + tv.tv_usec = (tmout * 1000) % 1000000; + } + r = select(p->fd + 1, &r_set, NULL, NULL, + p->md.timeout != 0 ? &tv : NULL); + if (r < 0 && errno == EINTR) { + if (!p->md.interrupted && p->md.timeout) { + p->md.interrupted = 1; + p->md.firstsel = cur; + } + return (0); + } else if (r < 0) { + (void) snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "select: %s", strerror(errno)); + return (PCAP_ERROR); + } + } + p->md.interrupted = 0; + /* + * Check again for data, which may exist now that we've either been + * woken up as a result of data or timed out. Try the "there's data" + * case first since it doesn't require a system call. + */ + data = pcap_next_zbuf_shm(p, cc); + if (data) + return (data); + /* + * Try forcing a buffer rotation to dislodge timed out or immediate + * data. + */ + if (ioctl(p->fd, BIOCROTZBUF, &bz) < 0) { + (void) snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "BIOCROTZBUF: %s", strerror(errno)); + return (PCAP_ERROR); + } + return (pcap_next_zbuf_shm(p, cc)); +} + +/* + * Notify kernel that we are done with the buffer. We don't reset zbuffer so + * that we know which buffer to use next time around. + */ +static int +pcap_ack_zbuf(pcap_t *p) +{ + + atomic_store_rel_int(&p->md.bzh->bzh_user_gen, + p->md.bzh->bzh_kernel_gen); + p->md.bzh = NULL; + p->buffer = NULL; + return (0); +} +#endif /* HAVE_ZEROCOPY_BPF */ + +pcap_t * +pcap_create(const char *device, char *ebuf) +{ + pcap_t *p; + +#ifdef HAVE_DAG_API + if (strstr(device, "dag")) + return (dag_create(device, ebuf)); +#endif /* HAVE_DAG_API */ +#ifdef HAVE_SNF_API + if (strstr(device, "snf")) + return (snf_create(device, ebuf)); +#endif /* HAVE_SNF_API */ + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return (NULL); + + p->activate_op = pcap_activate_bpf; + p->can_set_rfmon_op = pcap_can_set_rfmon_bpf; + return (p); +} + +/* + * On success, returns a file descriptor for a BPF device. + * On failure, returns a PCAP_ERROR_ value, and sets p->errbuf. + */ +static int +bpf_open(pcap_t *p) +{ + int fd; +#ifdef HAVE_CLONING_BPF + static const char device[] = "/dev/bpf"; +#else + int n = 0; + char device[sizeof "/dev/bpf0000000000"]; +#endif + +#ifdef _AIX + /* + * Load the bpf driver, if it isn't already loaded, + * and create the BPF device entries, if they don't + * already exist. + */ + if (bpf_load(p->errbuf) == PCAP_ERROR) + return (PCAP_ERROR); +#endif + +#ifdef HAVE_CLONING_BPF + if ((fd = open(device, O_RDWR)) == -1 && + (errno != EACCES || (fd = open(device, O_RDONLY)) == -1)) { + if (errno == EACCES) + fd = PCAP_ERROR_PERM_DENIED; + else + fd = PCAP_ERROR; + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "(cannot open device) %s: %s", device, pcap_strerror(errno)); + } +#else + /* + * Go through all the minors and find one that isn't in use. + */ + do { + (void)snprintf(device, sizeof(device), "/dev/bpf%d", n++); + /* + * Initially try a read/write open (to allow the inject + * method to work). If that fails due to permission + * issues, fall back to read-only. This allows a + * non-root user to be granted specific access to pcap + * capabilities via file permissions. + * + * XXX - we should have an API that has a flag that + * controls whether to open read-only or read-write, + * so that denial of permission to send (or inability + * to send, if sending packets isn't supported on + * the device in question) can be indicated at open + * time. + */ + fd = open(device, O_RDWR); + if (fd == -1 && errno == EACCES) + fd = open(device, O_RDONLY); + } while (fd < 0 && errno == EBUSY); + + /* + * XXX better message for all minors used + */ + if (fd < 0) { + switch (errno) { + + case ENOENT: + fd = PCAP_ERROR; + if (n == 1) { + /* + * /dev/bpf0 doesn't exist, which + * means we probably have no BPF + * devices. + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "(there are no BPF devices)"); + } else { + /* + * We got EBUSY on at least one + * BPF device, so we have BPF + * devices, but all the ones + * that exist are busy. + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "(all BPF devices are busy)"); + } + break; + + case EACCES: + /* + * Got EACCES on the last device we tried, + * and EBUSY on all devices before that, + * if any. + */ + fd = PCAP_ERROR_PERM_DENIED; + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "(cannot open BPF device) %s: %s", device, + pcap_strerror(errno)); + break; + + default: + /* + * Some other problem. + */ + fd = PCAP_ERROR; + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "(cannot open BPF device) %s: %s", device, + pcap_strerror(errno)); + break; + } + } +#endif + + return (fd); +} + +#ifdef BIOCGDLTLIST +static int +get_dlt_list(int fd, int v, struct bpf_dltlist *bdlp, char *ebuf) +{ + memset(bdlp, 0, sizeof(*bdlp)); + if (ioctl(fd, BIOCGDLTLIST, (caddr_t)bdlp) == 0) { + u_int i; + int is_ethernet; + + bdlp->bfl_list = (u_int *) malloc(sizeof(u_int) * (bdlp->bfl_len + 1)); + if (bdlp->bfl_list == NULL) { + (void)snprintf(ebuf, PCAP_ERRBUF_SIZE, "malloc: %s", + pcap_strerror(errno)); + return (PCAP_ERROR); + } + + if (ioctl(fd, BIOCGDLTLIST, (caddr_t)bdlp) < 0) { + (void)snprintf(ebuf, PCAP_ERRBUF_SIZE, + "BIOCGDLTLIST: %s", pcap_strerror(errno)); + free(bdlp->bfl_list); + return (PCAP_ERROR); + } + + /* + * OK, for real Ethernet devices, add DLT_DOCSIS to the + * list, so that an application can let you choose it, + * in case you're capturing DOCSIS traffic that a Cisco + * Cable Modem Termination System is putting out onto + * an Ethernet (it doesn't put an Ethernet header onto + * the wire, it puts raw DOCSIS frames out on the wire + * inside the low-level Ethernet framing). + * + * A "real Ethernet device" is defined here as a device + * that has a link-layer type of DLT_EN10MB and that has + * no alternate link-layer types; that's done to exclude + * 802.11 interfaces (which might or might not be the + * right thing to do, but I suspect it is - Ethernet <-> + * 802.11 bridges would probably badly mishandle frames + * that don't have Ethernet headers). + * + * On Solaris with BPF, Ethernet devices also offer + * DLT_IPNET, so we, if DLT_IPNET is defined, we don't + * treat it as an indication that the device isn't an + * Ethernet. + */ + if (v == DLT_EN10MB) { + is_ethernet = 1; + for (i = 0; i < bdlp->bfl_len; i++) { + if (bdlp->bfl_list[i] != DLT_EN10MB +#ifdef DLT_IPNET + && bdlp->bfl_list[i] != DLT_IPNET +#endif + ) { + is_ethernet = 0; + break; + } + } + if (is_ethernet) { + /* + * We reserved one more slot at the end of + * the list. + */ + bdlp->bfl_list[bdlp->bfl_len] = DLT_DOCSIS; + bdlp->bfl_len++; + } + } + } else { + /* + * EINVAL just means "we don't support this ioctl on + * this device"; don't treat it as an error. + */ + if (errno != EINVAL) { + (void)snprintf(ebuf, PCAP_ERRBUF_SIZE, + "BIOCGDLTLIST: %s", pcap_strerror(errno)); + return (PCAP_ERROR); + } + } + return (0); +} +#endif + +static int +pcap_can_set_rfmon_bpf(pcap_t *p) +{ +#if defined(__APPLE__) + struct utsname osinfo; + struct ifreq ifr; + int fd; +#ifdef BIOCGDLTLIST + struct bpf_dltlist bdl; +#endif + + /* + * The joys of monitor mode on OS X. + * + * Prior to 10.4, it's not supported at all. + * + * In 10.4, if adapter enN supports monitor mode, there's a + * wltN adapter corresponding to it; you open it, instead of + * enN, to get monitor mode. You get whatever link-layer + * headers it supplies. + * + * In 10.5, and, we assume, later releases, if adapter enN + * supports monitor mode, it offers, among its selectable + * DLT_ values, values that let you get the 802.11 header; + * selecting one of those values puts the adapter into monitor + * mode (i.e., you can't get 802.11 headers except in monitor + * mode, and you can't get Ethernet headers in monitor mode). + */ + if (uname(&osinfo) == -1) { + /* + * Can't get the OS version; just say "no". + */ + return (0); + } + /* + * We assume osinfo.sysname is "Darwin", because + * __APPLE__ is defined. We just check the version. + */ + if (osinfo.release[0] < '8' && osinfo.release[1] == '.') { + /* + * 10.3 (Darwin 7.x) or earlier. + * Monitor mode not supported. + */ + return (0); + } + if (osinfo.release[0] == '8' && osinfo.release[1] == '.') { + /* + * 10.4 (Darwin 8.x). s/en/wlt/, and check + * whether the device exists. + */ + if (strncmp(p->opt.source, "en", 2) != 0) { + /* + * Not an enN device; no monitor mode. + */ + return (0); + } + fd = socket(AF_INET, SOCK_DGRAM, 0); + if (fd == -1) { + (void)snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "socket: %s", pcap_strerror(errno)); + return (PCAP_ERROR); + } + strlcpy(ifr.ifr_name, "wlt", sizeof(ifr.ifr_name)); + strlcat(ifr.ifr_name, p->opt.source + 2, sizeof(ifr.ifr_name)); + if (ioctl(fd, SIOCGIFFLAGS, (char *)&ifr) < 0) { + /* + * No such device? + */ + close(fd); + return (0); + } + close(fd); + return (1); + } + +#ifdef BIOCGDLTLIST + /* + * Everything else is 10.5 or later; for those, + * we just open the enN device, and check whether + * we have any 802.11 devices. + * + * First, open a BPF device. + */ + fd = bpf_open(p); + if (fd < 0) + return (fd); /* fd is the appropriate error code */ + + /* + * Now bind to the device. + */ + (void)strncpy(ifr.ifr_name, p->opt.source, sizeof(ifr.ifr_name)); + if (ioctl(fd, BIOCSETIF, (caddr_t)&ifr) < 0) { + switch (errno) { + + case ENXIO: + /* + * There's no such device. + */ + close(fd); + return (PCAP_ERROR_NO_SUCH_DEVICE); + + case ENETDOWN: + /* + * Return a "network down" indication, so that + * the application can report that rather than + * saying we had a mysterious failure and + * suggest that they report a problem to the + * libpcap developers. + */ + close(fd); + return (PCAP_ERROR_IFACE_NOT_UP); + + default: + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "BIOCSETIF: %s: %s", + p->opt.source, pcap_strerror(errno)); + close(fd); + return (PCAP_ERROR); + } + } + + /* + * We know the default link type -- now determine all the DLTs + * this interface supports. If this fails with EINVAL, it's + * not fatal; we just don't get to use the feature later. + * (We don't care about DLT_DOCSIS, so we pass DLT_NULL + * as the default DLT for this adapter.) + */ + if (get_dlt_list(fd, DLT_NULL, &bdl, p->errbuf) == PCAP_ERROR) { + close(fd); + return (PCAP_ERROR); + } + if (find_802_11(&bdl) != -1) { + /* + * We have an 802.11 DLT, so we can set monitor mode. + */ + free(bdl.bfl_list); + close(fd); + return (1); + } + free(bdl.bfl_list); +#endif /* BIOCGDLTLIST */ + return (0); +#elif defined(HAVE_BSD_IEEE80211) + int ret; + + ret = monitor_mode(p, 0); + if (ret == PCAP_ERROR_RFMON_NOTSUP) + return (0); /* not an error, just a "can't do" */ + if (ret == 0) + return (1); /* success */ + return (ret); +#else + return (0); +#endif +} + +static int +pcap_stats_bpf(pcap_t *p, struct pcap_stat *ps) +{ + struct bpf_stat s; + + /* + * "ps_recv" counts packets handed to the filter, not packets + * that passed the filter. This includes packets later dropped + * because we ran out of buffer space. + * + * "ps_drop" counts packets dropped inside the BPF device + * because we ran out of buffer space. It doesn't count + * packets dropped by the interface driver. It counts + * only packets that passed the filter. + * + * Both statistics include packets not yet read from the kernel + * by libpcap, and thus not yet seen by the application. + */ + if (ioctl(p->fd, BIOCGSTATS, (caddr_t)&s) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCGSTATS: %s", + pcap_strerror(errno)); + return (PCAP_ERROR); + } + + ps->ps_recv = s.bs_recv; + ps->ps_drop = s.bs_drop; + ps->ps_ifdrop = 0; + return (0); +} + +static int +pcap_read_bpf(pcap_t *p, int cnt, pcap_handler callback, u_char *user) +{ + int cc; + int n = 0; + register u_char *bp, *ep; + u_char *datap; +#ifdef PCAP_FDDIPAD + register int pad; +#endif +#ifdef HAVE_ZEROCOPY_BPF + int i; +#endif + + again: + /* + * Has "pcap_breakloop()" been called? + */ + if (p->break_loop) { + /* + * Yes - clear the flag that indicates that it + * has, and return PCAP_ERROR_BREAK to indicate + * that we were told to break out of the loop. + */ + p->break_loop = 0; + return (PCAP_ERROR_BREAK); + } + cc = p->cc; + if (p->cc == 0) { + /* + * When reading without zero-copy from a file descriptor, we + * use a single buffer and return a length of data in the + * buffer. With zero-copy, we update the p->buffer pointer + * to point at whatever underlying buffer contains the next + * data and update cc to reflect the data found in the + * buffer. + */ +#ifdef HAVE_ZEROCOPY_BPF + if (p->md.zerocopy) { + if (p->buffer != NULL) + pcap_ack_zbuf(p); + i = pcap_next_zbuf(p, &cc); + if (i == 0) + goto again; + if (i < 0) + return (PCAP_ERROR); + } else +#endif + { + cc = read(p->fd, (char *)p->buffer, p->bufsize); + } + if (cc < 0) { + /* Don't choke when we get ptraced */ + switch (errno) { + + case EINTR: + goto again; + +#ifdef _AIX + case EFAULT: + /* + * Sigh. More AIX wonderfulness. + * + * For some unknown reason the uiomove() + * operation in the bpf kernel extension + * used to copy the buffer into user + * space sometimes returns EFAULT. I have + * no idea why this is the case given that + * a kernel debugger shows the user buffer + * is correct. This problem appears to + * be mostly mitigated by the memset of + * the buffer before it is first used. + * Very strange.... Shaun Clowes + * + * In any case this means that we shouldn't + * treat EFAULT as a fatal error; as we + * don't have an API for returning + * a "some packets were dropped since + * the last packet you saw" indication, + * we just ignore EFAULT and keep reading. + */ + goto again; +#endif + + case EWOULDBLOCK: + return (0); + + case ENXIO: + /* + * The device on which we're capturing + * went away. + * + * XXX - we should really return + * PCAP_ERROR_IFACE_NOT_UP, but + * pcap_dispatch() etc. aren't + * defined to retur that. + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "The interface went down"); + return (PCAP_ERROR); + +#if defined(sun) && !defined(BSD) && !defined(__svr4__) && !defined(__SVR4) + /* + * Due to a SunOS bug, after 2^31 bytes, the kernel + * file offset overflows and read fails with EINVAL. + * The lseek() to 0 will fix things. + */ + case EINVAL: + if (lseek(p->fd, 0L, SEEK_CUR) + + p->bufsize < 0) { + (void)lseek(p->fd, 0L, SEEK_SET); + goto again; + } + /* fall through */ +#endif + } + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "read: %s", + pcap_strerror(errno)); + return (PCAP_ERROR); + } + bp = p->buffer; + } else + bp = p->bp; + + /* + * Loop through each packet. + */ +#define bhp ((struct bpf_hdr *)bp) + ep = bp + cc; +#ifdef PCAP_FDDIPAD + pad = p->fddipad; +#endif + while (bp < ep) { + register int caplen, hdrlen; + + /* + * Has "pcap_breakloop()" been called? + * If so, return immediately - if we haven't read any + * packets, clear the flag and return PCAP_ERROR_BREAK + * to indicate that we were told to break out of the loop, + * otherwise leave the flag set, so that the *next* call + * will break out of the loop without having read any + * packets, and return the number of packets we've + * processed so far. + */ + if (p->break_loop) { + p->bp = bp; + p->cc = ep - bp; + /* + * ep is set based on the return value of read(), + * but read() from a BPF device doesn't necessarily + * return a value that's a multiple of the alignment + * value for BPF_WORDALIGN(). However, whenever we + * increment bp, we round up the increment value by + * a value rounded up by BPF_WORDALIGN(), so we + * could increment bp past ep after processing the + * last packet in the buffer. + * + * We treat ep < bp as an indication that this + * happened, and just set p->cc to 0. + */ + if (p->cc < 0) + p->cc = 0; + if (n == 0) { + p->break_loop = 0; + return (PCAP_ERROR_BREAK); + } else + return (n); + } + + caplen = bhp->bh_caplen; + hdrlen = bhp->bh_hdrlen; + datap = bp + hdrlen; + /* + * Short-circuit evaluation: if using BPF filter + * in kernel, no need to do it now - we already know + * the packet passed the filter. + * +#ifdef PCAP_FDDIPAD + * Note: the filter code was generated assuming + * that p->fddipad was the amount of padding + * before the header, as that's what's required + * in the kernel, so we run the filter before + * skipping that padding. +#endif + */ + if (p->md.use_bpf || + bpf_filter(p->fcode.bf_insns, datap, bhp->bh_datalen, caplen)) { + struct pcap_pkthdr pkthdr; + + pkthdr.ts.tv_sec = bhp->bh_tstamp.tv_sec; +#ifdef _AIX + /* + * AIX's BPF returns seconds/nanoseconds time + * stamps, not seconds/microseconds time stamps. + */ + pkthdr.ts.tv_usec = bhp->bh_tstamp.tv_usec/1000; +#else + pkthdr.ts.tv_usec = bhp->bh_tstamp.tv_usec; +#endif +#ifdef PCAP_FDDIPAD + if (caplen > pad) + pkthdr.caplen = caplen - pad; + else + pkthdr.caplen = 0; + if (bhp->bh_datalen > pad) + pkthdr.len = bhp->bh_datalen - pad; + else + pkthdr.len = 0; + datap += pad; +#else + pkthdr.caplen = caplen; + pkthdr.len = bhp->bh_datalen; +#endif + (*callback)(user, &pkthdr, datap); + bp += BPF_WORDALIGN(caplen + hdrlen); + if (++n >= cnt && cnt > 0) { + p->bp = bp; + p->cc = ep - bp; + /* + * See comment above about p->cc < 0. + */ + if (p->cc < 0) + p->cc = 0; + return (n); + } + } else { + /* + * Skip this packet. + */ + bp += BPF_WORDALIGN(caplen + hdrlen); + } + } +#undef bhp + p->cc = 0; + return (n); +} + +static int +pcap_inject_bpf(pcap_t *p, const void *buf, size_t size) +{ + int ret; + + ret = write(p->fd, buf, size); +#ifdef __APPLE__ + if (ret == -1 && errno == EAFNOSUPPORT) { + /* + * In Mac OS X, there's a bug wherein setting the + * BIOCSHDRCMPLT flag causes writes to fail; see, + * for example: + * + * http://cerberus.sourcefire.com/~jeff/archives/patches/macosx/BIOCSHDRCMPLT-10.3.3.patch + * + * So, if, on OS X, we get EAFNOSUPPORT from the write, we + * assume it's due to that bug, and turn off that flag + * and try again. If we succeed, it either means that + * somebody applied the fix from that URL, or other patches + * for that bug from + * + * http://cerberus.sourcefire.com/~jeff/archives/patches/macosx/ + * + * and are running a Darwin kernel with those fixes, or + * that Apple fixed the problem in some OS X release. + */ + u_int spoof_eth_src = 0; + + if (ioctl(p->fd, BIOCSHDRCMPLT, &spoof_eth_src) == -1) { + (void)snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "send: can't turn off BIOCSHDRCMPLT: %s", + pcap_strerror(errno)); + return (PCAP_ERROR); + } + + /* + * Now try the write again. + */ + ret = write(p->fd, buf, size); + } +#endif /* __APPLE__ */ + if (ret == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send: %s", + pcap_strerror(errno)); + return (PCAP_ERROR); + } + return (ret); +} + +#ifdef _AIX +static int +bpf_odminit(char *errbuf) +{ + char *errstr; + + if (odm_initialize() == -1) { + if (odm_err_msg(odmerrno, &errstr) == -1) + errstr = "Unknown error"; + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "bpf_load: odm_initialize failed: %s", + errstr); + return (PCAP_ERROR); + } + + if ((odmlockid = odm_lock("/etc/objrepos/config_lock", ODM_WAIT)) == -1) { + if (odm_err_msg(odmerrno, &errstr) == -1) + errstr = "Unknown error"; + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "bpf_load: odm_lock of /etc/objrepos/config_lock failed: %s", + errstr); + (void)odm_terminate(); + return (PCAP_ERROR); + } + + return (0); +} + +static int +bpf_odmcleanup(char *errbuf) +{ + char *errstr; + + if (odm_unlock(odmlockid) == -1) { + if (errbuf != NULL) { + if (odm_err_msg(odmerrno, &errstr) == -1) + errstr = "Unknown error"; + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "bpf_load: odm_unlock failed: %s", + errstr); + } + return (PCAP_ERROR); + } + + if (odm_terminate() == -1) { + if (errbuf != NULL) { + if (odm_err_msg(odmerrno, &errstr) == -1) + errstr = "Unknown error"; + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "bpf_load: odm_terminate failed: %s", + errstr); + } + return (PCAP_ERROR); + } + + return (0); +} + +static int +bpf_load(char *errbuf) +{ + long major; + int *minors; + int numminors, i, rc; + char buf[1024]; + struct stat sbuf; + struct bpf_config cfg_bpf; + struct cfg_load cfg_ld; + struct cfg_kmod cfg_km; + + /* + * This is very very close to what happens in the real implementation + * but I've fixed some (unlikely) bug situations. + */ + if (bpfloadedflag) + return (0); + + if (bpf_odminit(errbuf) == PCAP_ERROR) + return (PCAP_ERROR); + + major = genmajor(BPF_NAME); + if (major == -1) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "bpf_load: genmajor failed: %s", pcap_strerror(errno)); + (void)bpf_odmcleanup(NULL); + return (PCAP_ERROR); + } + + minors = getminor(major, &numminors, BPF_NAME); + if (!minors) { + minors = genminor("bpf", major, 0, BPF_MINORS, 1, 1); + if (!minors) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "bpf_load: genminor failed: %s", + pcap_strerror(errno)); + (void)bpf_odmcleanup(NULL); + return (PCAP_ERROR); + } + } + + if (bpf_odmcleanup(errbuf) == PCAP_ERROR) + return (PCAP_ERROR); + + rc = stat(BPF_NODE "0", &sbuf); + if (rc == -1 && errno != ENOENT) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "bpf_load: can't stat %s: %s", + BPF_NODE "0", pcap_strerror(errno)); + return (PCAP_ERROR); + } + + if (rc == -1 || getmajor(sbuf.st_rdev) != major) { + for (i = 0; i < BPF_MINORS; i++) { + sprintf(buf, "%s%d", BPF_NODE, i); + unlink(buf); + if (mknod(buf, S_IRUSR | S_IFCHR, domakedev(major, i)) == -1) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "bpf_load: can't mknod %s: %s", + buf, pcap_strerror(errno)); + return (PCAP_ERROR); + } + } + } + + /* Check if the driver is loaded */ + memset(&cfg_ld, 0x0, sizeof(cfg_ld)); + cfg_ld.path = buf; + sprintf(cfg_ld.path, "%s/%s", DRIVER_PATH, BPF_NAME); + if ((sysconfig(SYS_QUERYLOAD, (void *)&cfg_ld, sizeof(cfg_ld)) == -1) || + (cfg_ld.kmid == 0)) { + /* Driver isn't loaded, load it now */ + if (sysconfig(SYS_SINGLELOAD, (void *)&cfg_ld, sizeof(cfg_ld)) == -1) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "bpf_load: could not load driver: %s", + strerror(errno)); + return (PCAP_ERROR); + } + } + + /* Configure the driver */ + cfg_km.cmd = CFG_INIT; + cfg_km.kmid = cfg_ld.kmid; + cfg_km.mdilen = sizeof(cfg_bpf); + cfg_km.mdiptr = (void *)&cfg_bpf; + for (i = 0; i < BPF_MINORS; i++) { + cfg_bpf.devno = domakedev(major, i); + if (sysconfig(SYS_CFGKMOD, (void *)&cfg_km, sizeof(cfg_km)) == -1) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "bpf_load: could not configure driver: %s", + strerror(errno)); + return (PCAP_ERROR); + } + } + + bpfloadedflag = 1; + + return (0); +} +#endif + +/* + * Turn off rfmon mode if necessary. + */ +static void +pcap_cleanup_bpf(pcap_t *p) +{ +#ifdef HAVE_BSD_IEEE80211 + int sock; + struct ifmediareq req; + struct ifreq ifr; +#endif + + if (p->md.must_do_on_close != 0) { + /* + * There's something we have to do when closing this + * pcap_t. + */ +#ifdef HAVE_BSD_IEEE80211 + if (p->md.must_do_on_close & MUST_CLEAR_RFMON) { + /* + * We put the interface into rfmon mode; + * take it out of rfmon mode. + * + * XXX - if somebody else wants it in rfmon + * mode, this code cannot know that, so it'll take + * it out of rfmon mode. + */ + sock = socket(AF_INET, SOCK_DGRAM, 0); + if (sock == -1) { + fprintf(stderr, + "Can't restore interface flags (socket() failed: %s).\n" + "Please adjust manually.\n", + strerror(errno)); + } else { + memset(&req, 0, sizeof(req)); + strncpy(req.ifm_name, p->md.device, + sizeof(req.ifm_name)); + if (ioctl(sock, SIOCGIFMEDIA, &req) < 0) { + fprintf(stderr, + "Can't restore interface flags (SIOCGIFMEDIA failed: %s).\n" + "Please adjust manually.\n", + strerror(errno)); + } else { + if (req.ifm_current & IFM_IEEE80211_MONITOR) { + /* + * Rfmon mode is currently on; + * turn it off. + */ + memset(&ifr, 0, sizeof(ifr)); + (void)strncpy(ifr.ifr_name, + p->md.device, + sizeof(ifr.ifr_name)); + ifr.ifr_media = + req.ifm_current & ~IFM_IEEE80211_MONITOR; + if (ioctl(sock, SIOCSIFMEDIA, + &ifr) == -1) { + fprintf(stderr, + "Can't restore interface flags (SIOCSIFMEDIA failed: %s).\n" + "Please adjust manually.\n", + strerror(errno)); + } + } + } + close(sock); + } + } +#endif /* HAVE_BSD_IEEE80211 */ + + /* + * Take this pcap out of the list of pcaps for which we + * have to take the interface out of some mode. + */ + pcap_remove_from_pcaps_to_close(p); + p->md.must_do_on_close = 0; + } + +#ifdef HAVE_ZEROCOPY_BPF + if (p->md.zerocopy) { + /* + * Delete the mappings. Note that p->buffer gets + * initialized to one of the mmapped regions in + * this case, so do not try and free it directly; + * null it out so that pcap_cleanup_live_common() + * doesn't try to free it. + */ + if (p->md.zbuf1 != MAP_FAILED && p->md.zbuf1 != NULL) + (void) munmap(p->md.zbuf1, p->md.zbufsize); + if (p->md.zbuf2 != MAP_FAILED && p->md.zbuf2 != NULL) + (void) munmap(p->md.zbuf2, p->md.zbufsize); + p->buffer = NULL; + } +#endif + if (p->md.device != NULL) { + free(p->md.device); + p->md.device = NULL; + } + pcap_cleanup_live_common(p); +} + +static int +check_setif_failure(pcap_t *p, int error) +{ +#ifdef __APPLE__ + int fd; + struct ifreq ifr; + int err; +#endif + + if (error == ENXIO) { + /* + * No such device exists. + */ +#ifdef __APPLE__ + if (p->opt.rfmon && strncmp(p->opt.source, "wlt", 3) == 0) { + /* + * Monitor mode was requested, and we're trying + * to open a "wltN" device. Assume that this + * is 10.4 and that we were asked to open an + * "enN" device; if that device exists, return + * "monitor mode not supported on the device". + */ + fd = socket(AF_INET, SOCK_DGRAM, 0); + if (fd != -1) { + strlcpy(ifr.ifr_name, "en", + sizeof(ifr.ifr_name)); + strlcat(ifr.ifr_name, p->opt.source + 3, + sizeof(ifr.ifr_name)); + if (ioctl(fd, SIOCGIFFLAGS, (char *)&ifr) < 0) { + /* + * We assume this failed because + * the underlying device doesn't + * exist. + */ + err = PCAP_ERROR_NO_SUCH_DEVICE; + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "SIOCGIFFLAGS on %s failed: %s", + ifr.ifr_name, pcap_strerror(errno)); + } else { + /* + * The underlying "enN" device + * exists, but there's no + * corresponding "wltN" device; + * that means that the "enN" + * device doesn't support + * monitor mode, probably because + * it's an Ethernet device rather + * than a wireless device. + */ + err = PCAP_ERROR_RFMON_NOTSUP; + } + close(fd); + } else { + /* + * We can't find out whether there's + * an underlying "enN" device, so + * just report "no such device". + */ + err = PCAP_ERROR_NO_SUCH_DEVICE; + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "socket() failed: %s", + pcap_strerror(errno)); + } + return (err); + } +#endif + /* + * No such device. + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCSETIF failed: %s", + pcap_strerror(errno)); + return (PCAP_ERROR_NO_SUCH_DEVICE); + } else if (errno == ENETDOWN) { + /* + * Return a "network down" indication, so that + * the application can report that rather than + * saying we had a mysterious failure and + * suggest that they report a problem to the + * libpcap developers. + */ + return (PCAP_ERROR_IFACE_NOT_UP); + } else { + /* + * Some other error; fill in the error string, and + * return PCAP_ERROR. + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCSETIF: %s: %s", + p->opt.source, pcap_strerror(errno)); + return (PCAP_ERROR); + } +} + +/* + * Default capture buffer size. + * 32K isn't very much for modern machines with fast networks; we + * pick .5M, as that's the maximum on at least some systems with BPF. + * + * However, on AIX 3.5, the larger buffer sized caused unrecoverable + * read failures under stress, so we leave it as 32K; yet another + * place where AIX's BPF is broken. + */ +#ifdef _AIX +#define DEFAULT_BUFSIZE 32768 +#else +#define DEFAULT_BUFSIZE 524288 +#endif + +static int +pcap_activate_bpf(pcap_t *p) +{ + int status = 0; + int fd; +#ifdef LIFNAMSIZ + char *zonesep; + struct lifreq ifr; + char *ifrname = ifr.lifr_name; + const size_t ifnamsiz = sizeof(ifr.lifr_name); +#else + struct ifreq ifr; + char *ifrname = ifr.ifr_name; + const size_t ifnamsiz = sizeof(ifr.ifr_name); +#endif + struct bpf_version bv; +#ifdef __APPLE__ + int sockfd; + char *wltdev = NULL; +#endif +#ifdef BIOCGDLTLIST + struct bpf_dltlist bdl; +#if defined(__APPLE__) || defined(HAVE_BSD_IEEE80211) + int new_dlt; +#endif +#endif /* BIOCGDLTLIST */ +#if defined(BIOCGHDRCMPLT) && defined(BIOCSHDRCMPLT) + u_int spoof_eth_src = 1; +#endif + u_int v; + struct bpf_insn total_insn; + struct bpf_program total_prog; + struct utsname osinfo; + int have_osinfo = 0; +#ifdef HAVE_ZEROCOPY_BPF + struct bpf_zbuf bz; + u_int bufmode, zbufmax; +#endif + + fd = bpf_open(p); + if (fd < 0) { + status = fd; + goto bad; + } + + p->fd = fd; + + if (ioctl(fd, BIOCVERSION, (caddr_t)&bv) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCVERSION: %s", + pcap_strerror(errno)); + status = PCAP_ERROR; + goto bad; + } + if (bv.bv_major != BPF_MAJOR_VERSION || + bv.bv_minor < BPF_MINOR_VERSION) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "kernel bpf filter out of date"); + status = PCAP_ERROR; + goto bad; + } + +#if defined(LIFNAMSIZ) && defined(ZONENAME_MAX) && defined(lifr_zoneid) + /* + * Check if the given source network device has a '/' separated + * zonename prefix string. The zonename prefixed source device + * can be used by libpcap consumers to capture network traffic + * in non-global zones from the global zone on Solaris 11 and + * above. If the zonename prefix is present then we strip the + * prefix and pass the zone ID as part of lifr_zoneid. + */ + if ((zonesep = strchr(p->opt.source, '/')) != NULL) { + char zonename[ZONENAME_MAX]; + int znamelen; + char *lnamep; + + znamelen = zonesep - p->opt.source; + (void) strlcpy(zonename, p->opt.source, znamelen + 1); + lnamep = strdup(zonesep + 1); + ifr.lifr_zoneid = getzoneidbyname(zonename); + free(p->opt.source); + p->opt.source = lnamep; + } +#endif + + p->md.device = strdup(p->opt.source); + if (p->md.device == NULL) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "strdup: %s", + pcap_strerror(errno)); + status = PCAP_ERROR; + goto bad; + } + + /* + * Attempt to find out the version of the OS on which we're running. + */ + if (uname(&osinfo) == 0) + have_osinfo = 1; + +#ifdef __APPLE__ + /* + * See comment in pcap_can_set_rfmon_bpf() for an explanation + * of why we check the version number. + */ + if (p->opt.rfmon) { + if (have_osinfo) { + /* + * We assume osinfo.sysname is "Darwin", because + * __APPLE__ is defined. We just check the version. + */ + if (osinfo.release[0] < '8' && + osinfo.release[1] == '.') { + /* + * 10.3 (Darwin 7.x) or earlier. + */ + status = PCAP_ERROR_RFMON_NOTSUP; + goto bad; + } + if (osinfo.release[0] == '8' && + osinfo.release[1] == '.') { + /* + * 10.4 (Darwin 8.x). s/en/wlt/ + */ + if (strncmp(p->opt.source, "en", 2) != 0) { + /* + * Not an enN device; check + * whether the device even exists. + */ + sockfd = socket(AF_INET, SOCK_DGRAM, 0); + if (sockfd != -1) { + strlcpy(ifrname, + p->opt.source, ifnamsiz); + if (ioctl(sockfd, SIOCGIFFLAGS, + (char *)&ifr) < 0) { + /* + * We assume this + * failed because + * the underlying + * device doesn't + * exist. + */ + status = PCAP_ERROR_NO_SUCH_DEVICE; + snprintf(p->errbuf, + PCAP_ERRBUF_SIZE, + "SIOCGIFFLAGS failed: %s", + pcap_strerror(errno)); + } else + status = PCAP_ERROR_RFMON_NOTSUP; + close(sockfd); + } else { + /* + * We can't find out whether + * the device exists, so just + * report "no such device". + */ + status = PCAP_ERROR_NO_SUCH_DEVICE; + snprintf(p->errbuf, + PCAP_ERRBUF_SIZE, + "socket() failed: %s", + pcap_strerror(errno)); + } + goto bad; + } + wltdev = malloc(strlen(p->opt.source) + 2); + if (wltdev == NULL) { + (void)snprintf(p->errbuf, + PCAP_ERRBUF_SIZE, "malloc: %s", + pcap_strerror(errno)); + status = PCAP_ERROR; + goto bad; + } + strcpy(wltdev, "wlt"); + strcat(wltdev, p->opt.source + 2); + free(p->opt.source); + p->opt.source = wltdev; + } + /* + * Everything else is 10.5 or later; for those, + * we just open the enN device, and set the DLT. + */ + } + } +#endif /* __APPLE__ */ +#ifdef HAVE_ZEROCOPY_BPF + /* + * If the BPF extension to set buffer mode is present, try setting + * the mode to zero-copy. If that fails, use regular buffering. If + * it succeeds but other setup fails, return an error to the user. + */ + bufmode = BPF_BUFMODE_ZBUF; + if (ioctl(fd, BIOCSETBUFMODE, (caddr_t)&bufmode) == 0) { + /* + * We have zerocopy BPF; use it. + */ + p->md.zerocopy = 1; + + /* + * How to pick a buffer size: first, query the maximum buffer + * size supported by zero-copy. This also lets us quickly + * determine whether the kernel generally supports zero-copy. + * Then, if a buffer size was specified, use that, otherwise + * query the default buffer size, which reflects kernel + * policy for a desired default. Round to the nearest page + * size. + */ + if (ioctl(fd, BIOCGETZMAX, (caddr_t)&zbufmax) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCGETZMAX: %s", + pcap_strerror(errno)); + goto bad; + } + + if (p->opt.buffer_size != 0) { + /* + * A buffer size was explicitly specified; use it. + */ + v = p->opt.buffer_size; + } else { + if ((ioctl(fd, BIOCGBLEN, (caddr_t)&v) < 0) || + v < DEFAULT_BUFSIZE) + v = DEFAULT_BUFSIZE; + } +#ifndef roundup +#define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) /* to any y */ +#endif + p->md.zbufsize = roundup(v, getpagesize()); + if (p->md.zbufsize > zbufmax) + p->md.zbufsize = zbufmax; + p->md.zbuf1 = mmap(NULL, p->md.zbufsize, PROT_READ | PROT_WRITE, + MAP_ANON, -1, 0); + p->md.zbuf2 = mmap(NULL, p->md.zbufsize, PROT_READ | PROT_WRITE, + MAP_ANON, -1, 0); + if (p->md.zbuf1 == MAP_FAILED || p->md.zbuf2 == MAP_FAILED) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "mmap: %s", + pcap_strerror(errno)); + goto bad; + } + bzero(&bz, sizeof(bz)); + bz.bz_bufa = p->md.zbuf1; + bz.bz_bufb = p->md.zbuf2; + bz.bz_buflen = p->md.zbufsize; + if (ioctl(fd, BIOCSETZBUF, (caddr_t)&bz) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCSETZBUF: %s", + pcap_strerror(errno)); + goto bad; + } + (void)strncpy(ifrname, p->opt.source, ifnamsiz); + if (ioctl(fd, BIOCSETIF, (caddr_t)&ifr) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCSETIF: %s: %s", + p->opt.source, pcap_strerror(errno)); + goto bad; + } + v = p->md.zbufsize - sizeof(struct bpf_zbuf_header); + } else +#endif + { + /* + * We don't have zerocopy BPF. + * Set the buffer size. + */ + if (p->opt.buffer_size != 0) { + /* + * A buffer size was explicitly specified; use it. + */ + if (ioctl(fd, BIOCSBLEN, + (caddr_t)&p->opt.buffer_size) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "BIOCSBLEN: %s: %s", p->opt.source, + pcap_strerror(errno)); + status = PCAP_ERROR; + goto bad; + } + + /* + * Now bind to the device. + */ + (void)strncpy(ifrname, p->opt.source, ifnamsiz); +#ifdef BIOCSETLIF + if (ioctl(fd, BIOCSETLIF, (caddr_t)&ifr) < 0) +#else + if (ioctl(fd, BIOCSETIF, (caddr_t)&ifr) < 0) +#endif + { + status = check_setif_failure(p, errno); + goto bad; + } + } else { + /* + * No buffer size was explicitly specified. + * + * Try finding a good size for the buffer; + * DEFAULT_BUFSIZE may be too big, so keep + * cutting it in half until we find a size + * that works, or run out of sizes to try. + * If the default is larger, don't make it smaller. + */ + if ((ioctl(fd, BIOCGBLEN, (caddr_t)&v) < 0) || + v < DEFAULT_BUFSIZE) + v = DEFAULT_BUFSIZE; + for ( ; v != 0; v >>= 1) { + /* + * Ignore the return value - this is because the + * call fails on BPF systems that don't have + * kernel malloc. And if the call fails, it's + * no big deal, we just continue to use the + * standard buffer size. + */ + (void) ioctl(fd, BIOCSBLEN, (caddr_t)&v); + + (void)strncpy(ifrname, p->opt.source, ifnamsiz); +#ifdef BIOCSETLIF + if (ioctl(fd, BIOCSETLIF, (caddr_t)&ifr) >= 0) +#else + if (ioctl(fd, BIOCSETIF, (caddr_t)&ifr) >= 0) +#endif + break; /* that size worked; we're done */ + + if (errno != ENOBUFS) { + status = check_setif_failure(p, errno); + goto bad; + } + } + + if (v == 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "BIOCSBLEN: %s: No buffer size worked", + p->opt.source); + status = PCAP_ERROR; + goto bad; + } + } + } + + /* Get the data link layer type. */ + if (ioctl(fd, BIOCGDLT, (caddr_t)&v) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCGDLT: %s", + pcap_strerror(errno)); + status = PCAP_ERROR; + goto bad; + } + +#ifdef _AIX + /* + * AIX's BPF returns IFF_ types, not DLT_ types, in BIOCGDLT. + */ + switch (v) { + + case IFT_ETHER: + case IFT_ISO88023: + v = DLT_EN10MB; + break; + + case IFT_FDDI: + v = DLT_FDDI; + break; + + case IFT_ISO88025: + v = DLT_IEEE802; + break; + + case IFT_LOOP: + v = DLT_NULL; + break; + + default: + /* + * We don't know what to map this to yet. + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "unknown interface type %u", + v); + status = PCAP_ERROR; + goto bad; + } +#endif +#if _BSDI_VERSION - 0 >= 199510 + /* The SLIP and PPP link layer header changed in BSD/OS 2.1 */ + switch (v) { + + case DLT_SLIP: + v = DLT_SLIP_BSDOS; + break; + + case DLT_PPP: + v = DLT_PPP_BSDOS; + break; + + case 11: /*DLT_FR*/ + v = DLT_FRELAY; + break; + + case 12: /*DLT_C_HDLC*/ + v = DLT_CHDLC; + break; + } +#endif + +#ifdef BIOCGDLTLIST + /* + * We know the default link type -- now determine all the DLTs + * this interface supports. If this fails with EINVAL, it's + * not fatal; we just don't get to use the feature later. + */ + if (get_dlt_list(fd, v, &bdl, p->errbuf) == -1) { + status = PCAP_ERROR; + goto bad; + } + p->dlt_count = bdl.bfl_len; + p->dlt_list = bdl.bfl_list; + +#ifdef __APPLE__ + /* + * Monitor mode fun, continued. + * + * For 10.5 and, we're assuming, later releases, as noted above, + * 802.1 adapters that support monitor mode offer both DLT_EN10MB, + * DLT_IEEE802_11, and possibly some 802.11-plus-radio-information + * DLT_ value. Choosing one of the 802.11 DLT_ values will turn + * monitor mode on. + * + * Therefore, if the user asked for monitor mode, we filter out + * the DLT_EN10MB value, as you can't get that in monitor mode, + * and, if the user didn't ask for monitor mode, we filter out + * the 802.11 DLT_ values, because selecting those will turn + * monitor mode on. Then, for monitor mode, if an 802.11-plus- + * radio DLT_ value is offered, we try to select that, otherwise + * we try to select DLT_IEEE802_11. + */ + if (have_osinfo) { + if (isdigit((unsigned)osinfo.release[0]) && + (osinfo.release[0] == '9' || + isdigit((unsigned)osinfo.release[1]))) { + /* + * 10.5 (Darwin 9.x), or later. + */ + new_dlt = find_802_11(&bdl); + if (new_dlt != -1) { + /* + * We have at least one 802.11 DLT_ value, + * so this is an 802.11 interface. + * new_dlt is the best of the 802.11 + * DLT_ values in the list. + */ + if (p->opt.rfmon) { + /* + * Our caller wants monitor mode. + * Purge DLT_EN10MB from the list + * of link-layer types, as selecting + * it will keep monitor mode off. + */ + remove_en(p); + + /* + * If the new mode we want isn't + * the default mode, attempt to + * select the new mode. + */ + if (new_dlt != v) { + if (ioctl(p->fd, BIOCSDLT, + &new_dlt) != -1) { + /* + * We succeeded; + * make this the + * new DLT_ value. + */ + v = new_dlt; + } + } + } else { + /* + * Our caller doesn't want + * monitor mode. Unless this + * is being done by pcap_open_live(), + * purge the 802.11 link-layer types + * from the list, as selecting + * one of them will turn monitor + * mode on. + */ + if (!p->oldstyle) + remove_802_11(p); + } + } else { + if (p->opt.rfmon) { + /* + * The caller requested monitor + * mode, but we have no 802.11 + * link-layer types, so they + * can't have it. + */ + status = PCAP_ERROR_RFMON_NOTSUP; + goto bad; + } + } + } + } +#elif defined(HAVE_BSD_IEEE80211) + /* + * *BSD with the new 802.11 ioctls. + * Do we want monitor mode? + */ + if (p->opt.rfmon) { + /* + * Try to put the interface into monitor mode. + */ + status = monitor_mode(p, 1); + if (status != 0) { + /* + * We failed. + */ + goto bad; + } + + /* + * We're in monitor mode. + * Try to find the best 802.11 DLT_ value and, if we + * succeed, try to switch to that mode if we're not + * already in that mode. + */ + new_dlt = find_802_11(&bdl); + if (new_dlt != -1) { + /* + * We have at least one 802.11 DLT_ value. + * new_dlt is the best of the 802.11 + * DLT_ values in the list. + * + * If the new mode we want isn't the default mode, + * attempt to select the new mode. + */ + if (new_dlt != v) { + if (ioctl(p->fd, BIOCSDLT, &new_dlt) != -1) { + /* + * We succeeded; make this the + * new DLT_ value. + */ + v = new_dlt; + } + } + } + } +#endif /* various platforms */ +#endif /* BIOCGDLTLIST */ + + /* + * If this is an Ethernet device, and we don't have a DLT_ list, + * give it a list with DLT_EN10MB and DLT_DOCSIS. (That'd give + * 802.11 interfaces DLT_DOCSIS, which isn't the right thing to + * do, but there's not much we can do about that without finding + * some other way of determining whether it's an Ethernet or 802.11 + * device.) + */ + if (v == DLT_EN10MB && p->dlt_count == 0) { + p->dlt_list = (u_int *) malloc(sizeof(u_int) * 2); + /* + * If that fails, just leave the list empty. + */ + if (p->dlt_list != NULL) { + p->dlt_list[0] = DLT_EN10MB; + p->dlt_list[1] = DLT_DOCSIS; + p->dlt_count = 2; + } + } +#ifdef PCAP_FDDIPAD + if (v == DLT_FDDI) + p->fddipad = PCAP_FDDIPAD; + else + p->fddipad = 0; +#endif + p->linktype = v; + +#if defined(BIOCGHDRCMPLT) && defined(BIOCSHDRCMPLT) + /* + * Do a BIOCSHDRCMPLT, if defined, to turn that flag on, so + * the link-layer source address isn't forcibly overwritten. + * (Should we ignore errors? Should we do this only if + * we're open for writing?) + * + * XXX - I seem to remember some packet-sending bug in some + * BSDs - check CVS log for "bpf.c"? + */ + if (ioctl(fd, BIOCSHDRCMPLT, &spoof_eth_src) == -1) { + (void)snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "BIOCSHDRCMPLT: %s", pcap_strerror(errno)); + status = PCAP_ERROR; + goto bad; + } +#endif + /* set timeout */ +#ifdef HAVE_ZEROCOPY_BPF + if (p->md.timeout != 0 && !p->md.zerocopy) { +#else + if (p->md.timeout) { +#endif + /* + * XXX - is this seconds/nanoseconds in AIX? + * (Treating it as such doesn't fix the timeout + * problem described below.) + * + * XXX - Mac OS X 10.6 mishandles BIOCSRTIMEOUT in + * 64-bit userland - it takes, as an argument, a + * "struct BPF_TIMEVAL", which has 32-bit tv_sec + * and tv_usec, rather than a "struct timeval". + * + * If this platform defines "struct BPF_TIMEVAL", + * we check whether the structure size in BIOCSRTIMEOUT + * is that of a "struct timeval" and, if not, we use + * a "struct BPF_TIMEVAL" rather than a "struct timeval". + * (That way, if the bug is fixed in a future release, + * we will still do the right thing.) + */ + struct timeval to; +#ifdef HAVE_STRUCT_BPF_TIMEVAL + struct BPF_TIMEVAL bpf_to; + + if (IOCPARM_LEN(BIOCSRTIMEOUT) != sizeof(struct timeval)) { + bpf_to.tv_sec = p->md.timeout / 1000; + bpf_to.tv_usec = (p->md.timeout * 1000) % 1000000; + if (ioctl(p->fd, BIOCSRTIMEOUT, (caddr_t)&bpf_to) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "BIOCSRTIMEOUT: %s", pcap_strerror(errno)); + status = PCAP_ERROR; + goto bad; + } + } else { +#endif + to.tv_sec = p->md.timeout / 1000; + to.tv_usec = (p->md.timeout * 1000) % 1000000; + if (ioctl(p->fd, BIOCSRTIMEOUT, (caddr_t)&to) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "BIOCSRTIMEOUT: %s", pcap_strerror(errno)); + status = PCAP_ERROR; + goto bad; + } +#ifdef HAVE_STRUCT_BPF_TIMEVAL + } +#endif + } + +#ifdef _AIX +#ifdef BIOCIMMEDIATE + /* + * Darren Reed notes that + * + * On AIX (4.2 at least), if BIOCIMMEDIATE is not set, the + * timeout appears to be ignored and it waits until the buffer + * is filled before returning. The result of not having it + * set is almost worse than useless if your BPF filter + * is reducing things to only a few packets (i.e. one every + * second or so). + * + * so we turn BIOCIMMEDIATE mode on if this is AIX. + * + * We don't turn it on for other platforms, as that means we + * get woken up for every packet, which may not be what we want; + * in the Winter 1993 USENIX paper on BPF, they say: + * + * Since a process might want to look at every packet on a + * network and the time between packets can be only a few + * microseconds, it is not possible to do a read system call + * per packet and BPF must collect the data from several + * packets and return it as a unit when the monitoring + * application does a read. + * + * which I infer is the reason for the timeout - it means we + * wait that amount of time, in the hopes that more packets + * will arrive and we'll get them all with one read. + * + * Setting BIOCIMMEDIATE mode on FreeBSD (and probably other + * BSDs) causes the timeout to be ignored. + * + * On the other hand, some platforms (e.g., Linux) don't support + * timeouts, they just hand stuff to you as soon as it arrives; + * if that doesn't cause a problem on those platforms, it may + * be OK to have BIOCIMMEDIATE mode on BSD as well. + * + * (Note, though, that applications may depend on the read + * completing, even if no packets have arrived, when the timeout + * expires, e.g. GUI applications that have to check for input + * while waiting for packets to arrive; a non-zero timeout + * prevents "select()" from working right on FreeBSD and + * possibly other BSDs, as the timer doesn't start until a + * "read()" is done, so the timer isn't in effect if the + * application is blocked on a "select()", and the "select()" + * doesn't get woken up for a BPF device until the buffer + * fills up.) + */ + v = 1; + if (ioctl(p->fd, BIOCIMMEDIATE, &v) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCIMMEDIATE: %s", + pcap_strerror(errno)); + status = PCAP_ERROR; + goto bad; + } +#endif /* BIOCIMMEDIATE */ +#endif /* _AIX */ + + if (p->opt.promisc) { + /* set promiscuous mode, just warn if it fails */ + if (ioctl(p->fd, BIOCPROMISC, NULL) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCPROMISC: %s", + pcap_strerror(errno)); + status = PCAP_WARNING_PROMISC_NOTSUP; + } + } + + if (ioctl(fd, BIOCGBLEN, (caddr_t)&v) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCGBLEN: %s", + pcap_strerror(errno)); + status = PCAP_ERROR; + goto bad; + } + p->bufsize = v; +#ifdef HAVE_ZEROCOPY_BPF + if (!p->md.zerocopy) { +#endif + p->buffer = (u_char *)malloc(p->bufsize); + if (p->buffer == NULL) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", + pcap_strerror(errno)); + status = PCAP_ERROR; + goto bad; + } +#ifdef _AIX + /* For some strange reason this seems to prevent the EFAULT + * problems we have experienced from AIX BPF. */ + memset(p->buffer, 0x0, p->bufsize); +#endif +#ifdef HAVE_ZEROCOPY_BPF + } +#endif + + /* + * If there's no filter program installed, there's + * no indication to the kernel of what the snapshot + * length should be, so no snapshotting is done. + * + * Therefore, when we open the device, we install + * an "accept everything" filter with the specified + * snapshot length. + */ + total_insn.code = (u_short)(BPF_RET | BPF_K); + total_insn.jt = 0; + total_insn.jf = 0; + total_insn.k = p->snapshot; + + total_prog.bf_len = 1; + total_prog.bf_insns = &total_insn; + if (ioctl(p->fd, BIOCSETF, (caddr_t)&total_prog) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCSETF: %s", + pcap_strerror(errno)); + status = PCAP_ERROR; + goto bad; + } + + /* + * On most BPF platforms, either you can do a "select()" or + * "poll()" on a BPF file descriptor and it works correctly, + * or you can do it and it will return "readable" if the + * hold buffer is full but not if the timeout expires *and* + * a non-blocking read will, if the hold buffer is empty + * but the store buffer isn't empty, rotate the buffers + * and return what packets are available. + * + * In the latter case, the fact that a non-blocking read + * will give you the available packets means you can work + * around the failure of "select()" and "poll()" to wake up + * and return "readable" when the timeout expires by using + * the timeout as the "select()" or "poll()" timeout, putting + * the BPF descriptor into non-blocking mode, and read from + * it regardless of whether "select()" reports it as readable + * or not. + * + * However, in FreeBSD 4.3 and 4.4, "select()" and "poll()" + * won't wake up and return "readable" if the timer expires + * and non-blocking reads return EWOULDBLOCK if the hold + * buffer is empty, even if the store buffer is non-empty. + * + * This means the workaround in question won't work. + * + * Therefore, on FreeBSD 4.3 and 4.4, we set "p->selectable_fd" + * to -1, which means "sorry, you can't use 'select()' or 'poll()' + * here". On all other BPF platforms, we set it to the FD for + * the BPF device; in NetBSD, OpenBSD, and Darwin, a non-blocking + * read will, if the hold buffer is empty and the store buffer + * isn't empty, rotate the buffers and return what packets are + * there (and in sufficiently recent versions of OpenBSD + * "select()" and "poll()" should work correctly). + * + * XXX - what about AIX? + */ + p->selectable_fd = p->fd; /* assume select() works until we know otherwise */ + if (have_osinfo) { + /* + * We can check what OS this is. + */ + if (strcmp(osinfo.sysname, "FreeBSD") == 0) { + if (strncmp(osinfo.release, "4.3-", 4) == 0 || + strncmp(osinfo.release, "4.4-", 4) == 0) + p->selectable_fd = -1; + } + } + + p->read_op = pcap_read_bpf; + p->inject_op = pcap_inject_bpf; + p->setfilter_op = pcap_setfilter_bpf; + p->setdirection_op = pcap_setdirection_bpf; + p->set_datalink_op = pcap_set_datalink_bpf; + p->getnonblock_op = pcap_getnonblock_bpf; + p->setnonblock_op = pcap_setnonblock_bpf; + p->stats_op = pcap_stats_bpf; + p->cleanup_op = pcap_cleanup_bpf; + + return (status); + bad: + pcap_cleanup_bpf(p); + return (status); +} + +int +pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf) +{ +#ifdef HAVE_DAG_API + if (dag_platform_finddevs(alldevsp, errbuf) < 0) + return (-1); +#endif /* HAVE_DAG_API */ +#ifdef HAVE_SNF_API + if (snf_platform_finddevs(alldevsp, errbuf) < 0) + return (-1); +#endif /* HAVE_SNF_API */ + + return (0); +} + +#ifdef HAVE_BSD_IEEE80211 +static int +monitor_mode(pcap_t *p, int set) +{ + int sock; + struct ifmediareq req; + int *media_list; + int i; + int can_do; + struct ifreq ifr; + + sock = socket(AF_INET, SOCK_DGRAM, 0); + if (sock == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "can't open socket: %s", + pcap_strerror(errno)); + return (PCAP_ERROR); + } + + memset(&req, 0, sizeof req); + strncpy(req.ifm_name, p->opt.source, sizeof req.ifm_name); + + /* + * Find out how many media types we have. + */ + if (ioctl(sock, SIOCGIFMEDIA, &req) < 0) { + /* + * Can't get the media types. + */ + switch (errno) { + + case ENXIO: + /* + * There's no such device. + */ + close(sock); + return (PCAP_ERROR_NO_SUCH_DEVICE); + + case EINVAL: + /* + * Interface doesn't support SIOC{G,S}IFMEDIA. + */ + close(sock); + return (PCAP_ERROR_RFMON_NOTSUP); + + default: + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "SIOCGIFMEDIA 1: %s", pcap_strerror(errno)); + close(sock); + return (PCAP_ERROR); + } + } + if (req.ifm_count == 0) { + /* + * No media types. + */ + close(sock); + return (PCAP_ERROR_RFMON_NOTSUP); + } + + /* + * Allocate a buffer to hold all the media types, and + * get the media types. + */ + media_list = malloc(req.ifm_count * sizeof(int)); + if (media_list == NULL) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", + pcap_strerror(errno)); + close(sock); + return (PCAP_ERROR); + } + req.ifm_ulist = media_list; + if (ioctl(sock, SIOCGIFMEDIA, &req) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "SIOCGIFMEDIA: %s", + pcap_strerror(errno)); + free(media_list); + close(sock); + return (PCAP_ERROR); + } + + /* + * Look for an 802.11 "automatic" media type. + * We assume that all 802.11 adapters have that media type, + * and that it will carry the monitor mode supported flag. + */ + can_do = 0; + for (i = 0; i < req.ifm_count; i++) { + if (IFM_TYPE(media_list[i]) == IFM_IEEE80211 + && IFM_SUBTYPE(media_list[i]) == IFM_AUTO) { + /* OK, does it do monitor mode? */ + if (media_list[i] & IFM_IEEE80211_MONITOR) { + can_do = 1; + break; + } + } + } + free(media_list); + if (!can_do) { + /* + * This adapter doesn't support monitor mode. + */ + close(sock); + return (PCAP_ERROR_RFMON_NOTSUP); + } + + if (set) { + /* + * Don't just check whether we can enable monitor mode, + * do so, if it's not already enabled. + */ + if ((req.ifm_current & IFM_IEEE80211_MONITOR) == 0) { + /* + * Monitor mode isn't currently on, so turn it on, + * and remember that we should turn it off when the + * pcap_t is closed. + */ + + /* + * If we haven't already done so, arrange to have + * "pcap_close_all()" called when we exit. + */ + if (!pcap_do_addexit(p)) { + /* + * "atexit()" failed; don't put the interface + * in monitor mode, just give up. + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "atexit failed"); + close(sock); + return (PCAP_ERROR); + } + memset(&ifr, 0, sizeof(ifr)); + (void)strncpy(ifr.ifr_name, p->opt.source, + sizeof(ifr.ifr_name)); + ifr.ifr_media = req.ifm_current | IFM_IEEE80211_MONITOR; + if (ioctl(sock, SIOCSIFMEDIA, &ifr) == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "SIOCSIFMEDIA: %s", pcap_strerror(errno)); + close(sock); + return (PCAP_ERROR); + } + + p->md.must_do_on_close |= MUST_CLEAR_RFMON; + + /* + * Add this to the list of pcaps to close when we exit. + */ + pcap_add_to_pcaps_to_close(p); + } + } + return (0); +} +#endif /* HAVE_BSD_IEEE80211 */ + +#if defined(BIOCGDLTLIST) && (defined(__APPLE__) || defined(HAVE_BSD_IEEE80211)) +/* + * Check whether we have any 802.11 link-layer types; return the best + * of the 802.11 link-layer types if we find one, and return -1 + * otherwise. + * + * DLT_IEEE802_11_RADIO, with the radiotap header, is considered the + * best 802.11 link-layer type; any of the other 802.11-plus-radio + * headers are second-best; 802.11 with no radio information is + * the least good. + */ +static int +find_802_11(struct bpf_dltlist *bdlp) +{ + int new_dlt; + int i; + + /* + * Scan the list of DLT_ values, looking for 802.11 values, + * and, if we find any, choose the best of them. + */ + new_dlt = -1; + for (i = 0; i < bdlp->bfl_len; i++) { + switch (bdlp->bfl_list[i]) { + + case DLT_IEEE802_11: + /* + * 802.11, but no radio. + * + * Offer this, and select it as the new mode + * unless we've already found an 802.11 + * header with radio information. + */ + if (new_dlt == -1) + new_dlt = bdlp->bfl_list[i]; + break; + + case DLT_PRISM_HEADER: + case DLT_AIRONET_HEADER: + case DLT_IEEE802_11_RADIO_AVS: + /* + * 802.11 with radio, but not radiotap. + * + * Offer this, and select it as the new mode + * unless we've already found the radiotap DLT_. + */ + if (new_dlt != DLT_IEEE802_11_RADIO) + new_dlt = bdlp->bfl_list[i]; + break; + + case DLT_IEEE802_11_RADIO: + /* + * 802.11 with radiotap. + * + * Offer this, and select it as the new mode. + */ + new_dlt = bdlp->bfl_list[i]; + break; + + default: + /* + * Not 802.11. + */ + break; + } + } + + return (new_dlt); +} +#endif /* defined(BIOCGDLTLIST) && (defined(__APPLE__) || defined(HAVE_BSD_IEEE80211)) */ + +#if defined(__APPLE__) && defined(BIOCGDLTLIST) +/* + * Remove DLT_EN10MB from the list of DLT_ values, as we're in monitor mode, + * and DLT_EN10MB isn't supported in monitor mode. + */ +static void +remove_en(pcap_t *p) +{ + int i, j; + + /* + * Scan the list of DLT_ values and discard DLT_EN10MB. + */ + j = 0; + for (i = 0; i < p->dlt_count; i++) { + switch (p->dlt_list[i]) { + + case DLT_EN10MB: + /* + * Don't offer this one. + */ + continue; + + default: + /* + * Just copy this mode over. + */ + break; + } + + /* + * Copy this DLT_ value to its new position. + */ + p->dlt_list[j] = p->dlt_list[i]; + j++; + } + + /* + * Set the DLT_ count to the number of entries we copied. + */ + p->dlt_count = j; +} + +/* + * Remove 802.11 link-layer types from the list of DLT_ values, as + * we're not in monitor mode, and those DLT_ values will switch us + * to monitor mode. + */ +static void +remove_802_11(pcap_t *p) +{ + int i, j; + + /* + * Scan the list of DLT_ values and discard 802.11 values. + */ + j = 0; + for (i = 0; i < p->dlt_count; i++) { + switch (p->dlt_list[i]) { + + case DLT_IEEE802_11: + case DLT_PRISM_HEADER: + case DLT_AIRONET_HEADER: + case DLT_IEEE802_11_RADIO: + case DLT_IEEE802_11_RADIO_AVS: + /* + * 802.11. Don't offer this one. + */ + continue; + + default: + /* + * Just copy this mode over. + */ + break; + } + + /* + * Copy this DLT_ value to its new position. + */ + p->dlt_list[j] = p->dlt_list[i]; + j++; + } + + /* + * Set the DLT_ count to the number of entries we copied. + */ + p->dlt_count = j; +} +#endif /* defined(__APPLE__) && defined(BIOCGDLTLIST) */ + +static int +pcap_setfilter_bpf(pcap_t *p, struct bpf_program *fp) +{ + /* + * Free any user-mode filter we might happen to have installed. + */ + pcap_freecode(&p->fcode); + + /* + * Try to install the kernel filter. + */ + if (ioctl(p->fd, BIOCSETF, (caddr_t)fp) == 0) { + /* + * It worked. + */ + p->md.use_bpf = 1; /* filtering in the kernel */ + + /* + * Discard any previously-received packets, as they might + * have passed whatever filter was formerly in effect, but + * might not pass this filter (BIOCSETF discards packets + * buffered in the kernel, so you can lose packets in any + * case). + */ + p->cc = 0; + return (0); + } + + /* + * We failed. + * + * If it failed with EINVAL, that's probably because the program + * is invalid or too big. Validate it ourselves; if we like it + * (we currently allow backward branches, to support protochain), + * run it in userland. (There's no notion of "too big" for + * userland.) + * + * Otherwise, just give up. + * XXX - if the copy of the program into the kernel failed, + * we will get EINVAL rather than, say, EFAULT on at least + * some kernels. + */ + if (errno != EINVAL) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCSETF: %s", + pcap_strerror(errno)); + return (-1); + } + + /* + * install_bpf_program() validates the program. + * + * XXX - what if we already have a filter in the kernel? + */ + if (install_bpf_program(p, fp) < 0) + return (-1); + p->md.use_bpf = 0; /* filtering in userland */ + return (0); +} + +/* + * Set direction flag: Which packets do we accept on a forwarding + * single device? IN, OUT or both? + */ +static int +pcap_setdirection_bpf(pcap_t *p, pcap_direction_t d) +{ +#if defined(BIOCSDIRECTION) + u_int direction; + + direction = (d == PCAP_D_IN) ? BPF_D_IN : + ((d == PCAP_D_OUT) ? BPF_D_OUT : BPF_D_INOUT); + if (ioctl(p->fd, BIOCSDIRECTION, &direction) == -1) { + (void) snprintf(p->errbuf, sizeof(p->errbuf), + "Cannot set direction to %s: %s", + (d == PCAP_D_IN) ? "PCAP_D_IN" : + ((d == PCAP_D_OUT) ? "PCAP_D_OUT" : "PCAP_D_INOUT"), + strerror(errno)); + return (-1); + } + return (0); +#elif defined(BIOCSSEESENT) + u_int seesent; + + /* + * We don't support PCAP_D_OUT. + */ + if (d == PCAP_D_OUT) { + snprintf(p->errbuf, sizeof(p->errbuf), + "Setting direction to PCAP_D_OUT is not supported on BPF"); + return -1; + } + + seesent = (d == PCAP_D_INOUT); + if (ioctl(p->fd, BIOCSSEESENT, &seesent) == -1) { + (void) snprintf(p->errbuf, sizeof(p->errbuf), + "Cannot set direction to %s: %s", + (d == PCAP_D_INOUT) ? "PCAP_D_INOUT" : "PCAP_D_IN", + strerror(errno)); + return (-1); + } + return (0); +#else + (void) snprintf(p->errbuf, sizeof(p->errbuf), + "This system doesn't support BIOCSSEESENT, so the direction can't be set"); + return (-1); +#endif +} + +static int +pcap_set_datalink_bpf(pcap_t *p, int dlt) +{ +#ifdef BIOCSDLT + if (ioctl(p->fd, BIOCSDLT, &dlt) == -1) { + (void) snprintf(p->errbuf, sizeof(p->errbuf), + "Cannot set DLT %d: %s", dlt, strerror(errno)); + return (-1); + } +#endif + return (0); +} diff --git a/pcap-bpf.h b/pcap-bpf.h new file mode 100644 index 0000000..7b7e90a --- /dev/null +++ b/pcap-bpf.h @@ -0,0 +1,47 @@ +/*- + * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from the Stanford/CMU enet packet filter, + * (net/enet.c) distributed as part of 4.3BSD, and code contributed + * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence + * Berkeley Laboratory. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#) $Header: /tcpdump/master/libpcap/pcap-bpf.h,v 1.50 2007-04-01 21:43:55 guy Exp $ (LBL) + */ + +/* + * For backwards compatibility. + * + * Note to OS vendors: do NOT get rid of this file! Some applications + * might expect to be able to include . + */ +#include diff --git a/pcap-bt-linux.c b/pcap-bt-linux.c new file mode 100644 index 0000000..0c6c08d --- /dev/null +++ b/pcap-bt-linux.c @@ -0,0 +1,374 @@ +/* + * Copyright (c) 2006 Paolo Abeni (Italy) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Bluetooth sniffing API implementation for Linux platform + * By Paolo Abeni + * + */ +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-bt-linux.c,v 1.15 2008-07-01 07:05:54 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "pcap-int.h" +#include "pcap-bt-linux.h" +#include "pcap/bluetooth.h" + +#ifdef NEED_STRERROR_H +#include "strerror.h" +#endif + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#define BT_IFACE "bluetooth" +#define BT_CTRL_SIZE 128 + +/* forward declaration */ +static int bt_activate(pcap_t *); +static int bt_read_linux(pcap_t *, int , pcap_handler , u_char *); +static int bt_inject_linux(pcap_t *, const void *, size_t); +static int bt_setdirection_linux(pcap_t *, pcap_direction_t); +static int bt_stats_linux(pcap_t *, struct pcap_stat *); + +int +bt_platform_finddevs(pcap_if_t **alldevsp, char *err_str) +{ + pcap_if_t *found_dev = *alldevsp; + struct hci_dev_list_req *dev_list; + struct hci_dev_req *dev_req; + int i, sock; + int ret = 0; + + sock = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI); + if (sock < 0) + { + /* if bluetooth is not supported this this is not fatal*/ + if (errno == EAFNOSUPPORT) + return 0; + snprintf(err_str, PCAP_ERRBUF_SIZE, + "Can't open raw Bluetooth socket: %s", strerror(errno)); + return -1; + } + + dev_list = malloc(HCI_MAX_DEV * sizeof(*dev_req) + sizeof(*dev_list)); + if (!dev_list) + { + snprintf(err_str, PCAP_ERRBUF_SIZE, "Can't allocate %zu bytes for Bluetooth device list", + HCI_MAX_DEV * sizeof(*dev_req) + sizeof(*dev_list)); + ret = -1; + goto done; + } + + dev_list->dev_num = HCI_MAX_DEV; + + if (ioctl(sock, HCIGETDEVLIST, (void *) dev_list) < 0) + { + snprintf(err_str, PCAP_ERRBUF_SIZE, + "Can't get Bluetooth device list via ioctl: %s", + strerror(errno)); + ret = -1; + goto free; + } + + dev_req = dev_list->dev_req; + for (i = 0; i < dev_list->dev_num; i++, dev_req++) { + char dev_name[20], dev_descr[30]; + + snprintf(dev_name, 20, BT_IFACE"%d", dev_req->dev_id); + snprintf(dev_descr, 30, "Bluetooth adapter number %d", i); + + if (pcap_add_if(&found_dev, dev_name, 0, + dev_descr, err_str) < 0) + { + ret = -1; + break; + } + + } + +free: + free(dev_list); + +done: + close(sock); + return ret; +} + +pcap_t * +bt_create(const char *device, char *ebuf) +{ + pcap_t *p; + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return (NULL); + + p->activate_op = bt_activate; + return (p); +} + +static int +bt_activate(pcap_t* handle) +{ + struct sockaddr_hci addr; + int opt; + int dev_id; + struct hci_filter flt; + int err = PCAP_ERROR; + + /* get bt interface id */ + if (sscanf(handle->opt.source, BT_IFACE"%d", &dev_id) != 1) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't get Bluetooth device index from %s", + handle->opt.source); + return PCAP_ERROR; + } + + /* Initialize some components of the pcap structure. */ + handle->bufsize = handle->snapshot+BT_CTRL_SIZE+sizeof(pcap_bluetooth_h4_header); + handle->offset = BT_CTRL_SIZE; + handle->linktype = DLT_BLUETOOTH_HCI_H4_WITH_PHDR; + + handle->read_op = bt_read_linux; + handle->inject_op = bt_inject_linux; + handle->setfilter_op = install_bpf_program; /* no kernel filtering */ + handle->setdirection_op = bt_setdirection_linux; + handle->set_datalink_op = NULL; /* can't change data link type */ + handle->getnonblock_op = pcap_getnonblock_fd; + handle->setnonblock_op = pcap_setnonblock_fd; + handle->stats_op = bt_stats_linux; + handle->md.ifindex = dev_id; + + /* Create HCI socket */ + handle->fd = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI); + if (handle->fd < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't create raw socket: %s", strerror(errno)); + return PCAP_ERROR; + } + + handle->buffer = malloc(handle->bufsize); + if (!handle->buffer) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't allocate dump buffer: %s", + pcap_strerror(errno)); + goto close_fail; + } + + opt = 1; + if (setsockopt(handle->fd, SOL_HCI, HCI_DATA_DIR, &opt, sizeof(opt)) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't enable data direction info: %s", strerror(errno)); + goto close_fail; + } + + opt = 1; + if (setsockopt(handle->fd, SOL_HCI, HCI_TIME_STAMP, &opt, sizeof(opt)) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't enable time stamp: %s", strerror(errno)); + goto close_fail; + } + + /* Setup filter, do not call hci function to avoid dependence on + * external libs */ + memset(&flt, 0, sizeof(flt)); + memset((void *) &flt.type_mask, 0xff, sizeof(flt.type_mask)); + memset((void *) &flt.event_mask, 0xff, sizeof(flt.event_mask)); + if (setsockopt(handle->fd, SOL_HCI, HCI_FILTER, &flt, sizeof(flt)) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't set filter: %s", strerror(errno)); + goto close_fail; + } + + + /* Bind socket to the HCI device */ + addr.hci_family = AF_BLUETOOTH; + addr.hci_dev = handle->md.ifindex; + if (bind(handle->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't attach to device %d: %s", handle->md.ifindex, + strerror(errno)); + goto close_fail; + } + + if (handle->opt.rfmon) { + /* + * Monitor mode doesn't apply to Bluetooth devices. + */ + err = PCAP_ERROR_RFMON_NOTSUP; + goto close_fail; + } + + if (handle->opt.buffer_size != 0) { + /* + * Set the socket buffer size to the specified value. + */ + if (setsockopt(handle->fd, SOL_SOCKET, SO_RCVBUF, + &handle->opt.buffer_size, + sizeof(handle->opt.buffer_size)) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "SO_RCVBUF: %s", pcap_strerror(errno)); + goto close_fail; + } + } + + handle->selectable_fd = handle->fd; + return 0; + +close_fail: + pcap_cleanup_live_common(handle); + return err; +} + +static int +bt_read_linux(pcap_t *handle, int max_packets, pcap_handler callback, u_char *user) +{ + struct cmsghdr *cmsg; + struct msghdr msg; + struct iovec iv; + ssize_t ret; + struct pcap_pkthdr pkth; + pcap_bluetooth_h4_header* bthdr; + + bthdr = (pcap_bluetooth_h4_header*) &handle->buffer[handle->offset]; + iv.iov_base = &handle->buffer[handle->offset+sizeof(pcap_bluetooth_h4_header)]; + iv.iov_len = handle->snapshot; + + memset(&msg, 0, sizeof(msg)); + msg.msg_iov = &iv; + msg.msg_iovlen = 1; + msg.msg_control = handle->buffer; + msg.msg_controllen = handle->offset; + + /* ignore interrupt system call error */ + do { + ret = recvmsg(handle->fd, &msg, 0); + if (handle->break_loop) + { + handle->break_loop = 0; + return -2; + } + } while ((ret == -1) && (errno == EINTR)); + + if (ret < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't receive packet: %s", strerror(errno)); + return -1; + } + + pkth.caplen = ret; + + /* get direction and timestamp*/ + cmsg = CMSG_FIRSTHDR(&msg); + int in=0; + while (cmsg) { + switch (cmsg->cmsg_type) { + case HCI_CMSG_DIR: + memcpy(&in, CMSG_DATA(cmsg), sizeof in); + break; + case HCI_CMSG_TSTAMP: + memcpy(&pkth.ts, CMSG_DATA(cmsg), + sizeof pkth.ts); + break; + } + cmsg = CMSG_NXTHDR(&msg, cmsg); + } + if ((in && (handle->direction == PCAP_D_OUT)) || + ((!in) && (handle->direction == PCAP_D_IN))) + return 0; + + bthdr->direction = htonl(in != 0); + pkth.caplen+=sizeof(pcap_bluetooth_h4_header); + pkth.len = pkth.caplen; + if (handle->fcode.bf_insns == NULL || + bpf_filter(handle->fcode.bf_insns, &handle->buffer[handle->offset], + pkth.len, pkth.caplen)) { + callback(user, &pkth, &handle->buffer[handle->offset]); + return 1; + } + return 0; /* didn't pass filter */ +} + +static int +bt_inject_linux(pcap_t *handle, const void *buf, size_t size) +{ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "inject not supported on " + "bluetooth devices"); + return (-1); +} + + +static int +bt_stats_linux(pcap_t *handle, struct pcap_stat *stats) +{ + int ret; + struct hci_dev_info dev_info; + struct hci_dev_stats * s = &dev_info.stat; + dev_info.dev_id = handle->md.ifindex; + + /* ignore eintr */ + do { + ret = ioctl(handle->fd, HCIGETDEVINFO, (void *)&dev_info); + } while ((ret == -1) && (errno == EINTR)); + + if (ret < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't get stats via ioctl: %s", strerror(errno)); + return (-1); + + } + + /* we receive both rx and tx frames, so comulate all stats */ + stats->ps_recv = s->evt_rx + s->acl_rx + s->sco_rx + s->cmd_tx + + s->acl_tx +s->sco_tx; + stats->ps_drop = s->err_rx + s->err_tx; + stats->ps_ifdrop = 0; + return 0; +} + +static int +bt_setdirection_linux(pcap_t *p, pcap_direction_t d) +{ + p->direction = d; + return 0; +} diff --git a/pcap-bt-linux.h b/pcap-bt-linux.h new file mode 100644 index 0000000..ed01190 --- /dev/null +++ b/pcap-bt-linux.h @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2006 Paolo Abeni (Italy) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Bluetooth sniffing API implementation for Linux platform + * By Paolo Abeni + * + * @(#) $Header: /tcpdump/master/libpcap/pcap-bt-linux.h,v 1.5 2008-04-04 19:37:45 guy Exp $ (LBL) + */ + +/* + * Prototypes for Bluetooth-related functions + */ +int bt_platform_finddevs(pcap_if_t **alldevsp, char *err_str); +pcap_t *bt_create(const char *device, char *ebuf); diff --git a/pcap-can-linux.c b/pcap-can-linux.c new file mode 100644 index 0000000..fb8e232 --- /dev/null +++ b/pcap-can-linux.c @@ -0,0 +1,264 @@ +/* + * Copyright (c) 2009 Felix Obenhuber + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * SocketCan sniffing API implementation for Linux platform + * By Felix Obenhuber + * + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "pcap-int.h" +#include "pcap-can-linux.h" + +#ifdef NEED_STRERROR_H +#include "strerror.h" +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +/* not yet defined anywhere */ +#ifndef PF_CAN +#define PF_CAN 29 +#endif +#ifndef AF_CAN +#define AF_CAN PF_CAN +#endif + +/* forward declaration */ +static int can_activate(pcap_t *); +static int can_read_linux(pcap_t *, int , pcap_handler , u_char *); +static int can_inject_linux(pcap_t *, const void *, size_t); +static int can_setfilter_linux(pcap_t *, struct bpf_program *); +static int can_setdirection_linux(pcap_t *, pcap_direction_t); +static int can_stats_linux(pcap_t *, struct pcap_stat *); + +pcap_t * +can_create(const char *device, char *ebuf) +{ + pcap_t* p; + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return (NULL); + + p->activate_op = can_activate; + return (p); +} + + +static int +can_activate(pcap_t* handle) +{ + struct sockaddr_can addr; + struct ifreq ifr; + + /* Initialize some components of the pcap structure. */ + handle->bufsize = 24; + handle->offset = 8; + handle->linktype = DLT_CAN_SOCKETCAN; + handle->read_op = can_read_linux; + handle->inject_op = can_inject_linux; + handle->setfilter_op = can_setfilter_linux; + handle->setdirection_op = can_setdirection_linux; + handle->set_datalink_op = NULL; + handle->getnonblock_op = pcap_getnonblock_fd; + handle->setnonblock_op = pcap_setnonblock_fd; + handle->stats_op = can_stats_linux; + + /* Create socket */ + handle->fd = socket(PF_CAN, SOCK_RAW, CAN_RAW); + if (handle->fd < 0) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't create raw socket %d:%s", + errno, strerror(errno)); + return PCAP_ERROR; + } + + /* get interface index */ + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, handle->opt.source, sizeof(ifr.ifr_name)); + if (ioctl(handle->fd, SIOCGIFINDEX, &ifr) < 0) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Unable to get interface index: %s", + pcap_strerror(errno)); + pcap_cleanup_live_common(handle); + return PCAP_ERROR; + } + handle->md.ifindex = ifr.ifr_ifindex; + + /* allocate butter */ + handle->buffer = malloc(handle->bufsize); + if (!handle->buffer) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't allocate dump buffer: %s", + pcap_strerror(errno)); + pcap_cleanup_live_common(handle); + return PCAP_ERROR; + } + + /* Bind to the socket */ + addr.can_family = AF_CAN; + addr.can_ifindex = handle->md.ifindex; + if( bind( handle->fd, (struct sockaddr*)&addr, sizeof(addr) ) < 0 ) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't attach to device %d %d:%s", + handle->md.ifindex, errno, strerror(errno)); + pcap_cleanup_live_common(handle); + return PCAP_ERROR; + } + + if (handle->opt.rfmon) + { + /* Monitor mode doesn't apply to CAN devices. */ + pcap_cleanup_live_common(handle); + return PCAP_ERROR; + } + + handle->selectable_fd = handle->fd; + return 0; + +} + + +static int +can_read_linux(pcap_t *handle, int max_packets, pcap_handler callback, u_char *user) +{ + struct msghdr msg; + struct pcap_pkthdr pkth; + struct iovec iv; + struct can_frame* cf; + + iv.iov_base = &handle->buffer[handle->offset]; + iv.iov_len = handle->snapshot; + + memset(&msg, 0, sizeof(msg)); + msg.msg_iov = &iv; + msg.msg_iovlen = 1; + msg.msg_control = handle->buffer; + msg.msg_controllen = handle->offset; + + do + { + pkth.caplen = recvmsg(handle->fd, &msg, 0); + if (handle->break_loop) + { + handle->break_loop = 0; + return -2; + } + } while ((pkth.caplen == -1) && (errno == EINTR)); + + if (pkth.caplen < 0) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't receive packet %d:%s", + errno, strerror(errno)); + return -1; + } + + /* adjust capture len according to frame len */ + cf = (struct can_frame*)&handle->buffer[8]; + pkth.caplen -= 8 - cf->can_dlc; + pkth.len = pkth.caplen; + + cf->can_id = htonl( cf->can_id ); + + if( -1 == gettimeofday(&pkth.ts, NULL) ) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't get time of day %d:%s", + errno, strerror(errno)); + return -1; + } + + callback(user, &pkth, &handle->buffer[8]); + + return 1; +} + + +static int +can_inject_linux(pcap_t *handle, const void *buf, size_t size) +{ + /* not yet implemented */ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "inject not supported on " + "can devices"); + return (-1); +} + + +static int +can_stats_linux(pcap_t *handle, struct pcap_stat *stats) +{ + /* not yet implemented */ + stats->ps_recv = 0; /* number of packets received */ + stats->ps_drop = 0; /* number of packets dropped */ + stats->ps_ifdrop = 0; /* drops by interface -- only supported on some platforms */ + return 0; +} + + +static int +can_setfilter_linux(pcap_t *p, struct bpf_program *fp) +{ + /* not yet implemented */ + return 0; +} + + +static int +can_setdirection_linux(pcap_t *p, pcap_direction_t d) +{ + /* no support for PCAP_D_OUT */ + if (d == PCAP_D_OUT) + { + snprintf(p->errbuf, sizeof(p->errbuf), + "Setting direction to PCAP_D_OUT is not supported on can"); + return -1; + } + + p->direction = d; + + return 0; +} + + +/* eof */ diff --git a/pcap-can-linux.h b/pcap-can-linux.h new file mode 100644 index 0000000..0c8f3b5 --- /dev/null +++ b/pcap-can-linux.h @@ -0,0 +1,35 @@ +/* + * Copyright (c) 2009 Felix Obenhuber + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* + * Prototypes for SocketCAN related functions + */ +pcap_t* can_create(const char *device, char *ebuf); diff --git a/pcap-canusb-linux.c b/pcap-canusb-linux.c new file mode 100644 index 0000000..5abfe18 --- /dev/null +++ b/pcap-canusb-linux.c @@ -0,0 +1,428 @@ +/* + * Copyright (c) 2009 Felix Obenhuber + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Sockettrace sniffing API implementation for Linux platform + * By Felix Obenhuber + * + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include + +#include "pcap-int.h" +#include +#include +#include +#include + + +#define CANUSB_IFACE "canusb" + +#define CANUSB_VID 0x0403 +#define CANUSB_PID 0x8990 + +#define USE_THREAD 1 + +#if USE_THREAD == 0 +#include +#endif + + +/* forward declaration */ +static int canusb_activate(pcap_t *); +static int canusb_read_linux(pcap_t *, int , pcap_handler , u_char *); +static int canusb_inject_linux(pcap_t *, const void *, size_t); +static int canusb_setfilter_linux(pcap_t *, struct bpf_program *); +static int canusb_setdirection_linux(pcap_t *, pcap_direction_t); +static int canusb_stats_linux(pcap_t *, struct pcap_stat *); + +struct CAN_Msg +{ + uint32_t timestamp; + uint32_t id; + uint32_t length; + uint8_t data[8]; +}; + +struct canusb_t +{ + libusb_context *ctx; + libusb_device_handle *dev; + char* src; + pthread_t worker; + int rdpipe, wrpipe; + volatile int* loop; +}; + +static struct canusb_t canusb; +static volatile int loop; + + + +int canusb_platform_finddevs(pcap_if_t **alldevsp, char *err_str) +{ + libusb_context *fdctx; + libusb_device** devs; + unsigned char sernum[65]; + unsigned char buf[96]; + int cnt, i; + + libusb_init(&fdctx); + + cnt = libusb_get_device_list(fdctx,&devs); + + for(i=0;iactivate_op = canusb_activate; + + canusb.src = strdup(p->opt.source); + return (p); +} + + +static void* canusb_capture_thread(struct canusb_t *canusb) +{ + struct libusb_context *ctx; + libusb_device_handle *dev; + + int i, n; + struct + { + uint8_t rxsz, txsz; + } status; + + libusb_init(&ctx); + + char *serial = canusb->src + strlen(CANUSB_IFACE); + dev = canusb_opendevice(ctx, serial); + + fcntl(canusb->wrpipe, F_SETFL, O_NONBLOCK); + + while(*canusb->loop) + { + int sz, ret; + struct CAN_Msg msg; + + libusb_interrupt_transfer(dev, 0x81, (unsigned char*)&status, sizeof(status), &sz, 100); + //HACK!!!!! -> drop buffered data, read new one by reading twice. + ret = libusb_interrupt_transfer(dev, 0x81, (unsigned char*)&status, sizeof(status), &sz, 100); + + for(i = 0; iwrpipe, &msg, sizeof(msg)); + } + + } + + libusb_close(dev); + libusb_exit(ctx); + + return NULL; +} + +static int canusb_startcapture(struct canusb_t* this) +{ + int pipefd[2]; + + if (pipe(pipefd) == -1) return -1; + + canusb.rdpipe = pipefd[0]; + canusb.wrpipe = pipefd[1]; + canusb.loop = &loop; + + loop = 1; + pthread_create(&this->worker, NULL, canusb_capture_thread, &canusb); + + return canusb.rdpipe; +} + +static void canusb_clearbufs(struct canusb_t* this) +{ + unsigned char cmd[16]; + int al; + + cmd[0] = 1; //Empty incoming buffer + cmd[1] = 1; //Empty outgoing buffer + cmd[3] = 0; //Not a write to serial number + memset(&cmd[4],0,16-4); + + libusb_interrupt_transfer(this->dev, 0x1,cmd,16,&al,100); +} + + +static void canusb_close(pcap_t* handle) +{ + loop = 0; + pthread_join(canusb.worker, NULL); + + if (canusb.dev) + { + libusb_close(canusb.dev); + canusb.dev = NULL; + } +} + + + +static int canusb_activate(pcap_t* handle) +{ + handle->read_op = canusb_read_linux; + + handle->inject_op = canusb_inject_linux; + handle->setfilter_op = canusb_setfilter_linux; + handle->setdirection_op = canusb_setdirection_linux; + handle->getnonblock_op = pcap_getnonblock_fd; + handle->setnonblock_op = pcap_setnonblock_fd; + handle->stats_op = canusb_stats_linux; + handle->cleanup_op = canusb_close; + + /* Initialize some components of the pcap structure. */ + handle->bufsize = 32; + handle->offset = 8; + handle->linktype = DLT_CAN_SOCKETCAN; + handle->set_datalink_op = NULL; + + char* serial = handle->opt.source + strlen("canusb"); + + canusb.dev = canusb_opendevice(canusb.ctx,serial); + if (!canusb.dev) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't open USB Device:"); + return PCAP_ERROR; + } + + canusb_clearbufs(&canusb); + + handle->fd = canusb_startcapture(&canusb); + handle->selectable_fd = handle->fd; + + return 0; +} + + + + +static int +canusb_read_linux(pcap_t *handle, int max_packets, pcap_handler callback, u_char *user) +{ + static struct timeval firstpacket = { -1, -1}; + + int msgsent = 0; + int i = 0; + struct CAN_Msg msg; + struct pcap_pkthdr pkth; + + while(i < max_packets) + { + usleep(10 * 1000); + int n = read(handle->fd, &msg, sizeof(msg)); + if (n <= 0) break; + pkth.caplen = pkth.len = n; + pkth.caplen -= 4; + pkth.caplen -= 8 - msg.length; + + if ((firstpacket.tv_sec == -1) && (firstpacket.tv_usec == -1)) + gettimeofday(&firstpacket, NULL); + + pkth.ts.tv_usec = firstpacket.tv_usec + (msg.timestamp % 100) * 10000; + pkth.ts.tv_sec = firstpacket.tv_usec + (msg.timestamp / 100); + if (pkth.ts.tv_usec > 1000000) + { + pkth.ts.tv_usec -= 1000000; + pkth.ts.tv_sec++; + } + + callback(user, &pkth, (void*)&msg.id); + i++; + } + + return i; +} + + +static int +canusb_inject_linux(pcap_t *handle, const void *buf, size_t size) +{ + /* not yet implemented */ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "inject not supported on canusb devices"); + return (-1); +} + + +static int +canusb_stats_linux(pcap_t *handle, struct pcap_stat *stats) +{ + /* not yet implemented */ + stats->ps_recv = 0; /* number of packets received */ + stats->ps_drop = 0; /* number of packets dropped */ + stats->ps_ifdrop = 0; /* drops by interface -- only supported on some platforms */ + return 0; +} + + +static int +canusb_setfilter_linux(pcap_t *p, struct bpf_program *fp) +{ + /* not yet implemented */ + return 0; +} + + +static int +canusb_setdirection_linux(pcap_t *p, pcap_direction_t d) +{ + /* no support for PCAP_D_OUT */ + if (d == PCAP_D_OUT) + { + snprintf(p->errbuf, sizeof(p->errbuf), + "Setting direction to PCAP_D_OUT is not supported on this interface"); + return -1; + } + + p->direction = d; + + return 0; +} + + +/* eof */ diff --git a/pcap-canusb-linux.h b/pcap-canusb-linux.h new file mode 100644 index 0000000..f03053a --- /dev/null +++ b/pcap-canusb-linux.h @@ -0,0 +1,37 @@ +/* + * Copyright (c) 2009 Felix Obenhuber + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* + * Prototypes for SocketCAN related functions + */ +pcap_t* canusb_create(const char *device, char *ebuf); +int canusb_listdevices(pcap_if_t **pdevlist, char* errbuf); + diff --git a/pcap-common.c b/pcap-common.c new file mode 100644 index 0000000..31cf84d --- /dev/null +++ b/pcap-common.c @@ -0,0 +1,1158 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * pcap-common.c - common code for pcap and pcap-ng files + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef WIN32 +#include +#else /* WIN32 */ +#if HAVE_INTTYPES_H +#include +#elif HAVE_STDINT_H +#include +#endif +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +#include +#endif /* WIN32 */ + +#include "pcap-int.h" +#include "pcap/usb.h" + +#include "pcap-common.h" + +/* + * We don't write DLT_* values to capture files, because they're not the + * same on all platforms. + * + * Unfortunately, the various flavors of BSD have not always used the same + * numerical values for the same data types, and various patches to + * libpcap for non-BSD OSes have added their own DLT_* codes for link + * layer encapsulation types seen on those OSes, and those codes have had, + * in some cases, values that were also used, on other platforms, for other + * link layer encapsulation types. + * + * This means that capture files of a type whose numerical DLT_* code + * means different things on different BSDs, or with different versions + * of libpcap, can't always be read on systems other than those like + * the one running on the machine on which the capture was made. + * + * Instead, we define here a set of LINKTYPE_* codes, and map DLT_* codes + * to LINKTYPE_* codes when writing a savefile header, and map LINKTYPE_* + * codes to DLT_* codes when reading a savefile header. + * + * For those DLT_* codes that have, as far as we know, the same values on + * all platforms (DLT_NULL through DLT_FDDI), we define LINKTYPE_xxx as + * DLT_xxx; that way, captures of those types can still be read by + * versions of libpcap that map LINKTYPE_* values to DLT_* values, and + * captures of those types written by versions of libpcap that map DLT_ + * values to LINKTYPE_ values can still be read by older versions + * of libpcap. + * + * The other LINKTYPE_* codes are given values starting at 100, in the + * hopes that no DLT_* code will be given one of those values. + * + * In order to ensure that a given LINKTYPE_* code's value will refer to + * the same encapsulation type on all platforms, you should not allocate + * a new LINKTYPE_* value without consulting + * "tcpdump-workers@lists.tcpdump.org". The tcpdump developers will + * allocate a value for you, and will not subsequently allocate it to + * anybody else; that value will be added to the "pcap.h" in the + * tcpdump.org Git repository, so that a future libpcap release will + * include it. + * + * You should, if possible, also contribute patches to libpcap and tcpdump + * to handle the new encapsulation type, so that they can also be checked + * into the tcpdump.org Git repository and so that they will appear in + * future libpcap and tcpdump releases. + * + * Do *NOT* assume that any values after the largest value in this file + * are available; you might not have the most up-to-date version of this + * file, and new values after that one might have been assigned. Also, + * do *NOT* use any values below 100 - those might already have been + * taken by one (or more!) organizations. + * + * Any platform that defines additional DLT_* codes should: + * + * request a LINKTYPE_* code and value from tcpdump.org, + * as per the above; + * + * add, in their version of libpcap, an entry to map + * those DLT_* codes to the corresponding LINKTYPE_* + * code; + * + * redefine, in their "net/bpf.h", any DLT_* values + * that collide with the values used by their additional + * DLT_* codes, to remove those collisions (but without + * making them collide with any of the LINKTYPE_* + * values equal to 50 or above; they should also avoid + * defining DLT_* values that collide with those + * LINKTYPE_* values, either). + */ +#define LINKTYPE_NULL DLT_NULL +#define LINKTYPE_ETHERNET DLT_EN10MB /* also for 100Mb and up */ +#define LINKTYPE_EXP_ETHERNET DLT_EN3MB /* 3Mb experimental Ethernet */ +#define LINKTYPE_AX25 DLT_AX25 +#define LINKTYPE_PRONET DLT_PRONET +#define LINKTYPE_CHAOS DLT_CHAOS +#define LINKTYPE_IEEE802_5 DLT_IEEE802 /* DLT_IEEE802 is used for 802.5 Token Ring */ +#define LINKTYPE_ARCNET_BSD DLT_ARCNET /* BSD-style headers */ +#define LINKTYPE_SLIP DLT_SLIP +#define LINKTYPE_PPP DLT_PPP +#define LINKTYPE_FDDI DLT_FDDI + +/* + * LINKTYPE_PPP is for use when there might, or might not, be an RFC 1662 + * PPP in HDLC-like framing header (with 0xff 0x03 before the PPP protocol + * field) at the beginning of the packet. + * + * This is for use when there is always such a header; the address field + * might be 0xff, for regular PPP, or it might be an address field for Cisco + * point-to-point with HDLC framing as per section 4.3.1 of RFC 1547 ("Cisco + * HDLC"). This is, for example, what you get with NetBSD's DLT_PPP_SERIAL. + * + * We give it the same value as NetBSD's DLT_PPP_SERIAL, in the hopes that + * nobody else will choose a DLT_ value of 50, and so that DLT_PPP_SERIAL + * captures will be written out with a link type that NetBSD's tcpdump + * can read. + */ +#define LINKTYPE_PPP_HDLC 50 /* PPP in HDLC-like framing */ + +#define LINKTYPE_PPP_ETHER 51 /* NetBSD PPP-over-Ethernet */ + +#define LINKTYPE_SYMANTEC_FIREWALL 99 /* Symantec Enterprise Firewall */ + +/* + * These correspond to DLT_s that have different values on different + * platforms; we map between these values in capture files and + * the DLT_ values as returned by pcap_datalink() and passed to + * pcap_open_dead(). + */ +#define LINKTYPE_ATM_RFC1483 100 /* LLC/SNAP-encapsulated ATM */ +#define LINKTYPE_RAW 101 /* raw IP */ +#define LINKTYPE_SLIP_BSDOS 102 /* BSD/OS SLIP BPF header */ +#define LINKTYPE_PPP_BSDOS 103 /* BSD/OS PPP BPF header */ + +/* + * Values starting with 104 are used for newly-assigned link-layer + * header type values; for those link-layer header types, the DLT_ + * value returned by pcap_datalink() and passed to pcap_open_dead(), + * and the LINKTYPE_ value that appears in capture files, are the + * same. + * + * LINKTYPE_MATCHING_MIN is the lowest such value; LINKTYPE_MATCHING_MAX + * is the highest such value. + */ +#define LINKTYPE_MATCHING_MIN 104 /* lowest value in the "matching" range */ + +#define LINKTYPE_C_HDLC 104 /* Cisco HDLC */ +#define LINKTYPE_IEEE802_11 105 /* IEEE 802.11 (wireless) */ +#define LINKTYPE_ATM_CLIP 106 /* Linux Classical IP over ATM */ +#define LINKTYPE_FRELAY 107 /* Frame Relay */ +#define LINKTYPE_LOOP 108 /* OpenBSD loopback */ +#define LINKTYPE_ENC 109 /* OpenBSD IPSEC enc */ + +/* + * These three types are reserved for future use. + */ +#define LINKTYPE_LANE8023 110 /* ATM LANE + 802.3 */ +#define LINKTYPE_HIPPI 111 /* NetBSD HIPPI */ +#define LINKTYPE_HDLC 112 /* NetBSD HDLC framing */ + +#define LINKTYPE_LINUX_SLL 113 /* Linux cooked socket capture */ +#define LINKTYPE_LTALK 114 /* Apple LocalTalk hardware */ +#define LINKTYPE_ECONET 115 /* Acorn Econet */ + +/* + * Reserved for use with OpenBSD ipfilter. + */ +#define LINKTYPE_IPFILTER 116 + +#define LINKTYPE_PFLOG 117 /* OpenBSD DLT_PFLOG */ +#define LINKTYPE_CISCO_IOS 118 /* For Cisco-internal use */ +#define LINKTYPE_IEEE802_11_PRISM 119 /* 802.11 plus Prism II monitor mode radio metadata header */ +#define LINKTYPE_IEEE802_11_AIRONET 120 /* 802.11 plus FreeBSD Aironet driver radio metadata header */ + +/* + * Reserved for Siemens HiPath HDLC. + */ +#define LINKTYPE_HHDLC 121 + +#define LINKTYPE_IP_OVER_FC 122 /* RFC 2625 IP-over-Fibre Channel */ +#define LINKTYPE_SUNATM 123 /* Solaris+SunATM */ + +/* + * Reserved as per request from Kent Dahlgren + * for private use. + */ +#define LINKTYPE_RIO 124 /* RapidIO */ +#define LINKTYPE_PCI_EXP 125 /* PCI Express */ +#define LINKTYPE_AURORA 126 /* Xilinx Aurora link layer */ + +#define LINKTYPE_IEEE802_11_RADIOTAP 127 /* 802.11 plus radiotap radio metadata header */ + +/* + * Reserved for the TZSP encapsulation, as per request from + * Chris Waters + * TZSP is a generic encapsulation for any other link type, + * which includes a means to include meta-information + * with the packet, e.g. signal strength and channel + * for 802.11 packets. + */ +#define LINKTYPE_TZSP 128 /* Tazmen Sniffer Protocol */ + +#define LINKTYPE_ARCNET_LINUX 129 /* Linux-style headers */ + +/* + * Juniper-private data link types, as per request from + * Hannes Gredler . The corresponding + * DLT_s are used for passing on chassis-internal + * metainformation such as QOS profiles, etc.. + */ +#define LINKTYPE_JUNIPER_MLPPP 130 +#define LINKTYPE_JUNIPER_MLFR 131 +#define LINKTYPE_JUNIPER_ES 132 +#define LINKTYPE_JUNIPER_GGSN 133 +#define LINKTYPE_JUNIPER_MFR 134 +#define LINKTYPE_JUNIPER_ATM2 135 +#define LINKTYPE_JUNIPER_SERVICES 136 +#define LINKTYPE_JUNIPER_ATM1 137 + +#define LINKTYPE_APPLE_IP_OVER_IEEE1394 138 /* Apple IP-over-IEEE 1394 cooked header */ + +#define LINKTYPE_MTP2_WITH_PHDR 139 +#define LINKTYPE_MTP2 140 +#define LINKTYPE_MTP3 141 +#define LINKTYPE_SCCP 142 + +#define LINKTYPE_DOCSIS 143 /* DOCSIS MAC frames */ + +#define LINKTYPE_LINUX_IRDA 144 /* Linux-IrDA */ + +/* + * Reserved for IBM SP switch and IBM Next Federation switch. + */ +#define LINKTYPE_IBM_SP 145 +#define LINKTYPE_IBM_SN 146 + +/* + * Reserved for private use. If you have some link-layer header type + * that you want to use within your organization, with the capture files + * using that link-layer header type not ever be sent outside your + * organization, you can use these values. + * + * No libpcap release will use these for any purpose, nor will any + * tcpdump release use them, either. + * + * Do *NOT* use these in capture files that you expect anybody not using + * your private versions of capture-file-reading tools to read; in + * particular, do *NOT* use them in products, otherwise you may find that + * people won't be able to use tcpdump, or snort, or Ethereal, or... to + * read capture files from your firewall/intrusion detection/traffic + * monitoring/etc. appliance, or whatever product uses that LINKTYPE_ value, + * and you may also find that the developers of those applications will + * not accept patches to let them read those files. + * + * Also, do not use them if somebody might send you a capture using them + * for *their* private type and tools using them for *your* private type + * would have to read them. + * + * Instead, in those cases, ask "tcpdump-workers@lists.tcpdump.org" for a + * new DLT_ and LINKTYPE_ value, as per the comment in pcap/bpf.h, and use + * the type you're given. + */ +#define LINKTYPE_USER0 147 +#define LINKTYPE_USER1 148 +#define LINKTYPE_USER2 149 +#define LINKTYPE_USER3 150 +#define LINKTYPE_USER4 151 +#define LINKTYPE_USER5 152 +#define LINKTYPE_USER6 153 +#define LINKTYPE_USER7 154 +#define LINKTYPE_USER8 155 +#define LINKTYPE_USER9 156 +#define LINKTYPE_USER10 157 +#define LINKTYPE_USER11 158 +#define LINKTYPE_USER12 159 +#define LINKTYPE_USER13 160 +#define LINKTYPE_USER14 161 +#define LINKTYPE_USER15 162 + +/* + * For future use with 802.11 captures - defined by AbsoluteValue + * Systems to store a number of bits of link-layer information + * including radio information: + * + * http://www.shaftnet.org/~pizza/software/capturefrm.txt + */ +#define LINKTYPE_IEEE802_11_AVS 163 /* 802.11 plus AVS radio metadata header */ + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . The corresponding + * DLT_s are used for passing on chassis-internal + * metainformation such as QOS profiles, etc.. + */ +#define LINKTYPE_JUNIPER_MONITOR 164 + +/* + * BACnet MS/TP frames. + */ +#define LINKTYPE_BACNET_MS_TP 165 + +/* + * Another PPP variant as per request from Karsten Keil . + * + * This is used in some OSes to allow a kernel socket filter to distinguish + * between incoming and outgoing packets, on a socket intended to + * supply pppd with outgoing packets so it can do dial-on-demand and + * hangup-on-lack-of-demand; incoming packets are filtered out so they + * don't cause pppd to hold the connection up (you don't want random + * input packets such as port scans, packets from old lost connections, + * etc. to force the connection to stay up). + * + * The first byte of the PPP header (0xff03) is modified to accomodate + * the direction - 0x00 = IN, 0x01 = OUT. + */ +#define LINKTYPE_PPP_PPPD 166 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . The DLT_s are used + * for passing on chassis-internal metainformation such as + * QOS profiles, cookies, etc.. + */ +#define LINKTYPE_JUNIPER_PPPOE 167 +#define LINKTYPE_JUNIPER_PPPOE_ATM 168 + +#define LINKTYPE_GPRS_LLC 169 /* GPRS LLC */ +#define LINKTYPE_GPF_T 170 /* GPF-T (ITU-T G.7041/Y.1303) */ +#define LINKTYPE_GPF_F 171 /* GPF-T (ITU-T G.7041/Y.1303) */ + +/* + * Requested by Oolan Zimmer for use in Gcom's T1/E1 line + * monitoring equipment. + */ +#define LINKTYPE_GCOM_T1E1 172 +#define LINKTYPE_GCOM_SERIAL 173 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . The DLT_ is used + * for internal communication to Physical Interface Cards (PIC) + */ +#define LINKTYPE_JUNIPER_PIC_PEER 174 + +/* + * Link types requested by Gregor Maier of Endace + * Measurement Systems. They add an ERF header (see + * http://www.endace.com/support/EndaceRecordFormat.pdf) in front of + * the link-layer header. + */ +#define LINKTYPE_ERF_ETH 175 /* Ethernet */ +#define LINKTYPE_ERF_POS 176 /* Packet-over-SONET */ + +/* + * Requested by Daniele Orlandi for raw LAPD + * for vISDN (http://www.orlandi.com/visdn/). Its link-layer header + * includes additional information before the LAPD header, so it's + * not necessarily a generic LAPD header. + */ +#define LINKTYPE_LINUX_LAPD 177 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . + * The Link Types are used for prepending meta-information + * like interface index, interface name + * before standard Ethernet, PPP, Frelay & C-HDLC Frames + */ +#define LINKTYPE_JUNIPER_ETHER 178 +#define LINKTYPE_JUNIPER_PPP 179 +#define LINKTYPE_JUNIPER_FRELAY 180 +#define LINKTYPE_JUNIPER_CHDLC 181 + +/* + * Multi Link Frame Relay (FRF.16) + */ +#define LINKTYPE_MFR 182 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . + * The DLT_ is used for internal communication with a + * voice Adapter Card (PIC) + */ +#define LINKTYPE_JUNIPER_VP 183 + +/* + * Arinc 429 frames. + * DLT_ requested by Gianluca Varenni . + * Every frame contains a 32bit A429 label. + * More documentation on Arinc 429 can be found at + * http://www.condoreng.com/support/downloads/tutorials/ARINCTutorial.pdf + */ +#define LINKTYPE_A429 184 + +/* + * Arinc 653 Interpartition Communication messages. + * DLT_ requested by Gianluca Varenni . + * Please refer to the A653-1 standard for more information. + */ +#define LINKTYPE_A653_ICM 185 + +/* + * USB packets, beginning with a USB setup header; requested by + * Paolo Abeni . + */ +#define LINKTYPE_USB 186 + +/* + * Bluetooth HCI UART transport layer (part H:4); requested by + * Paolo Abeni. + */ +#define LINKTYPE_BLUETOOTH_HCI_H4 187 + +/* + * IEEE 802.16 MAC Common Part Sublayer; requested by Maria Cruz + * . + */ +#define LINKTYPE_IEEE802_16_MAC_CPS 188 + +/* + * USB packets, beginning with a Linux USB header; requested by + * Paolo Abeni . + */ +#define LINKTYPE_USB_LINUX 189 + +/* + * Controller Area Network (CAN) v. 2.0B packets. + * DLT_ requested by Gianluca Varenni . + * Used to dump CAN packets coming from a CAN Vector board. + * More documentation on the CAN v2.0B frames can be found at + * http://www.can-cia.org/downloads/?269 + */ +#define LINKTYPE_CAN20B 190 + +/* + * IEEE 802.15.4, with address fields padded, as is done by Linux + * drivers; requested by Juergen Schimmer. + */ +#define LINKTYPE_IEEE802_15_4_LINUX 191 + +/* + * Per Packet Information encapsulated packets. + * LINKTYPE_ requested by Gianluca Varenni . + */ +#define LINKTYPE_PPI 192 + +/* + * Header for 802.16 MAC Common Part Sublayer plus a radiotap radio header; + * requested by Charles Clancy. + */ +#define LINKTYPE_IEEE802_16_MAC_CPS_RADIO 193 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . + * The DLT_ is used for internal communication with a + * integrated service module (ISM). + */ +#define LINKTYPE_JUNIPER_ISM 194 + +/* + * IEEE 802.15.4, exactly as it appears in the spec (no padding, no + * nothing); requested by Mikko Saarnivala . + */ +#define LINKTYPE_IEEE802_15_4 195 + +/* + * Various link-layer types, with a pseudo-header, for SITA + * (http://www.sita.aero/); requested by Fulko Hew (fulko.hew@gmail.com). + */ +#define LINKTYPE_SITA 196 + +/* + * Various link-layer types, with a pseudo-header, for Endace DAG cards; + * encapsulates Endace ERF records. Requested by Stephen Donnelly + * . + */ +#define LINKTYPE_ERF 197 + +/* + * Special header prepended to Ethernet packets when capturing from a + * u10 Networks board. Requested by Phil Mulholland + * . + */ +#define LINKTYPE_RAIF1 198 + +/* + * IPMB packet for IPMI, beginning with the I2C slave address, followed + * by the netFn and LUN, etc.. Requested by Chanthy Toeung + * . + */ +#define LINKTYPE_IPMB 199 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . + * The DLT_ is used for capturing data on a secure tunnel interface. + */ +#define LINKTYPE_JUNIPER_ST 200 + +/* + * Bluetooth HCI UART transport layer (part H:4), with pseudo-header + * that includes direction information; requested by Paolo Abeni. + */ +#define LINKTYPE_BLUETOOTH_HCI_H4_WITH_PHDR 201 + +/* + * AX.25 packet with a 1-byte KISS header; see + * + * http://www.ax25.net/kiss.htm + * + * as per Richard Stearn . + */ +#define LINKTYPE_AX25_KISS 202 + +/* + * LAPD packets from an ISDN channel, starting with the address field, + * with no pseudo-header. + * Requested by Varuna De Silva . + */ +#define LINKTYPE_LAPD 203 + +/* + * Variants of various link-layer headers, with a one-byte direction + * pseudo-header prepended - zero means "received by this host", + * non-zero (any non-zero value) means "sent by this host" - as per + * Will Barker . + */ +#define LINKTYPE_PPP_WITH_DIR 204 /* PPP */ +#define LINKTYPE_C_HDLC_WITH_DIR 205 /* Cisco HDLC */ +#define LINKTYPE_FRELAY_WITH_DIR 206 /* Frame Relay */ +#define LINKTYPE_LAPB_WITH_DIR 207 /* LAPB */ + +/* + * 208 is reserved for an as-yet-unspecified proprietary link-layer + * type, as requested by Will Barker. + */ + +/* + * IPMB with a Linux-specific pseudo-header; as requested by Alexey Neyman + * . + */ +#define LINKTYPE_IPMB_LINUX 209 + +/* + * FlexRay automotive bus - http://www.flexray.com/ - as requested + * by Hannes Kaelber . + */ +#define LINKTYPE_FLEXRAY 210 + +/* + * Media Oriented Systems Transport (MOST) bus for multimedia + * transport - http://www.mostcooperation.com/ - as requested + * by Hannes Kaelber . + */ +#define LINKTYPE_MOST 211 + +/* + * Local Interconnect Network (LIN) bus for vehicle networks - + * http://www.lin-subbus.org/ - as requested by Hannes Kaelber + * . + */ +#define LINKTYPE_LIN 212 + +/* + * X2E-private data link type used for serial line capture, + * as requested by Hannes Kaelber . + */ +#define LINKTYPE_X2E_SERIAL 213 + +/* + * X2E-private data link type used for the Xoraya data logger + * family, as requested by Hannes Kaelber . + */ +#define LINKTYPE_X2E_XORAYA 214 + +/* + * IEEE 802.15.4, exactly as it appears in the spec (no padding, no + * nothing), but with the PHY-level data for non-ASK PHYs (4 octets + * of 0 as preamble, one octet of SFD, one octet of frame length+ + * reserved bit, and then the MAC-layer data, starting with the + * frame control field). + * + * Requested by Max Filippov . + */ +#define LINKTYPE_IEEE802_15_4_NONASK_PHY 215 + +/* + * David Gibson requested this for + * captures from the Linux kernel /dev/input/eventN devices. This + * is used to communicate keystrokes and mouse movements from the + * Linux kernel to display systems, such as Xorg. + */ +#define LINKTYPE_LINUX_EVDEV 216 + +/* + * GSM Um and Abis interfaces, preceded by a "gsmtap" header. + * + * Requested by Harald Welte . + */ +#define LINKTYPE_GSMTAP_UM 217 +#define LINKTYPE_GSMTAP_ABIS 218 + +/* + * MPLS, with an MPLS label as the link-layer header. + * Requested by Michele Marchetto on behalf + * of OpenBSD. + */ +#define LINKTYPE_MPLS 219 + +/* + * USB packets, beginning with a Linux USB header, with the USB header + * padded to 64 bytes; required for memory-mapped access. + */ +#define LINKTYPE_USB_LINUX_MMAPPED 220 + +/* + * DECT packets, with a pseudo-header; requested by + * Matthias Wenzel . + */ +#define LINKTYPE_DECT 221 + +/* + * From: "Lidwa, Eric (GSFC-582.0)[SGT INC]" + * Date: Mon, 11 May 2009 11:18:30 -0500 + * + * DLT_AOS. We need it for AOS Space Data Link Protocol. + * I have already written dissectors for but need an OK from + * legal before I can submit a patch. + * + */ +#define LINKTYPE_AOS 222 + +/* + * Wireless HART (Highway Addressable Remote Transducer) + * From the HART Communication Foundation + * IES/PAS 62591 + * + * Requested by Sam Roberts . + */ +#define LINKTYPE_WIHART 223 + +/* + * Fibre Channel FC-2 frames, beginning with a Frame_Header. + * Requested by Kahou Lei . + */ +#define LINKTYPE_FC_2 224 + +/* + * Fibre Channel FC-2 frames, beginning with an encoding of the + * SOF, and ending with an encoding of the EOF. + * + * The encodings represent the frame delimiters as 4-byte sequences + * representing the corresponding ordered sets, with K28.5 + * represented as 0xBC, and the D symbols as the corresponding + * byte values; for example, SOFi2, which is K28.5 - D21.5 - D1.2 - D21.2, + * is represented as 0xBC 0xB5 0x55 0x55. + * + * Requested by Kahou Lei . + */ +#define LINKTYPE_FC_2_WITH_FRAME_DELIMS 225 + +/* + * Solaris ipnet pseudo-header; requested by Darren Reed . + * + * The pseudo-header starts with a one-byte version number; for version 2, + * the pseudo-header is: + * + * struct dl_ipnetinfo { + * u_int8_t dli_version; + * u_int8_t dli_family; + * u_int16_t dli_htype; + * u_int32_t dli_pktlen; + * u_int32_t dli_ifindex; + * u_int32_t dli_grifindex; + * u_int32_t dli_zsrc; + * u_int32_t dli_zdst; + * }; + * + * dli_version is 2 for the current version of the pseudo-header. + * + * dli_family is a Solaris address family value, so it's 2 for IPv4 + * and 26 for IPv6. + * + * dli_htype is a "hook type" - 0 for incoming packets, 1 for outgoing + * packets, and 2 for packets arriving from another zone on the same + * machine. + * + * dli_pktlen is the length of the packet data following the pseudo-header + * (so the captured length minus dli_pktlen is the length of the + * pseudo-header, assuming the entire pseudo-header was captured). + * + * dli_ifindex is the interface index of the interface on which the + * packet arrived. + * + * dli_grifindex is the group interface index number (for IPMP interfaces). + * + * dli_zsrc is the zone identifier for the source of the packet. + * + * dli_zdst is the zone identifier for the destination of the packet. + * + * A zone number of 0 is the global zone; a zone number of 0xffffffff + * means that the packet arrived from another host on the network, not + * from another zone on the same machine. + * + * An IPv4 or IPv6 datagram follows the pseudo-header; dli_family indicates + * which of those it is. + */ +#define LINKTYPE_IPNET 226 + +/* + * CAN (Controller Area Network) frames, with a pseudo-header as supplied + * by Linux SocketCAN. See Documentation/networking/can.txt in the Linux + * source. + * + * Requested by Felix Obenhuber . + */ +#define LINKTYPE_CAN_SOCKETCAN 227 + +/* + * Raw IPv4/IPv6; different from DLT_RAW in that the DLT_ value specifies + * whether it's v4 or v6. Requested by Darren Reed . + */ +#define LINKTYPE_IPV4 228 +#define LINKTYPE_IPV6 229 + +/* + * IEEE 802.15.4, exactly as it appears in the spec (no padding, no + * nothing), and with no FCS at the end of the frame; requested by + * Jon Smirl . + */ +#define LINKTYPE_IEEE802_15_4_NOFCS 230 + +/* + * Raw D-Bus: + * + * http://www.freedesktop.org/wiki/Software/dbus + * + * messages: + * + * http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-messages + * + * starting with the endianness flag, followed by the message type, etc., + * but without the authentication handshake before the message sequence: + * + * http://dbus.freedesktop.org/doc/dbus-specification.html#auth-protocol + * + * Requested by Martin Vidner . + */ +#define LINKTYPE_DBUS 231 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . + */ +#define LINKTYPE_JUNIPER_VS 232 +#define LINKTYPE_JUNIPER_SRX_E2E 233 +#define LINKTYPE_JUNIPER_FIBRECHANNEL 234 + +/* + * DVB-CI (DVB Common Interface for communication between a PC Card + * module and a DVB receiver). See + * + * http://www.kaiser.cx/pcap-dvbci.html + * + * for the specification. + * + * Requested by Martin Kaiser . + */ +#define LINKTYPE_DVB_CI 235 + +/* + * Variant of 3GPP TS 27.010 multiplexing protocol. Requested + * by Hans-Christoph Schemmel . + */ +#define LINKTYPE_MUX27010 236 + +/* + * STANAG 5066 D_PDUs. Requested by M. Baris Demiray + * . + */ +#define LINKTYPE_STANAG_5066_D_PDU 237 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . + */ +#define LINKTYPE_JUNIPER_ATM_CEMIC 238 + +/* + * NetFilter LOG messages + * (payload of netlink NFNL_SUBSYS_ULOG/NFULNL_MSG_PACKET packets) + * + * Requested by Jakub Zawadzki + */ +#define LINKTYPE_NFLOG 239 + +/* + * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type + * for Ethernet packets with a 4-byte pseudo-header and always + * with the payload including the FCS, as supplied by their + * netANALYZER hardware and software. + * + * Requested by Holger P. Frommer + */ +#define LINKTYPE_NETANALYZER 240 + +/* + * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type + * for Ethernet packets with a 4-byte pseudo-header and FCS and + * 1 byte of SFD, as supplied by their netANALYZER hardware and + * software. + * + * Requested by Holger P. Frommer + */ +#define LINKTYPE_NETANALYZER_TRANSPARENT 241 + +/* + * IP-over-Infiniband, as specified by RFC 4391. + * + * Requested by Petr Sumbera . + */ +#define LINKTYPE_IPOIB 242 + +/* + * MPEG-2 transport stream (ISO 13818-1/ITU-T H.222.0). + * + * Requested by Guy Martin . + */ +#define LINKTYPE_MPEG_2_TS 243 + +/* + * ng4T GmbH's UMTS Iub/Iur-over-ATM and Iub/Iur-over-IP format as + * used by their ng40 protocol tester. + * + * Requested by Jens Grimmer . + */ +#define LINKTYPE_NG40 244 + +/* + * Pseudo-header giving adapter number and flags, followed by an NFC + * (Near-Field Communications) Logical Link Control Protocol (LLCP) PDU, + * as specified by NFC Forum Logical Link Control Protocol Technical + * Specification LLCP 1.1. + * + * Requested by Mike Wakerly . + */ +#define LINKTYPE_NFC_LLCP 245 + +/* + * pfsync output; DLT_PFSYNC is 18, which collides with DLT_CIP in + * SuSE 6.3, on OpenBSD, NetBSD, DragonFly BSD, and Mac OS X, and + * is 121, which collides with DLT_HHDLC, in FreeBSD. We pick a + * shiny new link-layer header type value that doesn't collide with + * anything, in the hopes that future pfsync savefiles, if any, + * won't require special hacks to distinguish from other savefiles. + * + */ +#define LINKTYPE_PFSYNC 246 + +#define LINKTYPE_MATCHING_MAX 246 /* highest value in the "matching" range */ + +static struct linktype_map { + int dlt; + int linktype; +} map[] = { + /* + * These DLT_* codes have LINKTYPE_* codes with values identical + * to the values of the corresponding DLT_* code. + */ + { DLT_NULL, LINKTYPE_NULL }, + { DLT_EN10MB, LINKTYPE_ETHERNET }, + { DLT_EN3MB, LINKTYPE_EXP_ETHERNET }, + { DLT_AX25, LINKTYPE_AX25 }, + { DLT_PRONET, LINKTYPE_PRONET }, + { DLT_CHAOS, LINKTYPE_CHAOS }, + { DLT_IEEE802, LINKTYPE_IEEE802_5 }, + { DLT_ARCNET, LINKTYPE_ARCNET_BSD }, + { DLT_SLIP, LINKTYPE_SLIP }, + { DLT_PPP, LINKTYPE_PPP }, + { DLT_FDDI, LINKTYPE_FDDI }, + { DLT_SYMANTEC_FIREWALL, LINKTYPE_SYMANTEC_FIREWALL }, + + /* + * These DLT_* codes have different values on different + * platforms; we map them to LINKTYPE_* codes that + * have values that should never be equal to any DLT_* + * code. + */ +#ifdef DLT_FR + /* BSD/OS Frame Relay */ + { DLT_FR, LINKTYPE_FRELAY }, +#endif + + { DLT_ATM_RFC1483, LINKTYPE_ATM_RFC1483 }, + { DLT_RAW, LINKTYPE_RAW }, + { DLT_SLIP_BSDOS, LINKTYPE_SLIP_BSDOS }, + { DLT_PPP_BSDOS, LINKTYPE_PPP_BSDOS }, + + /* BSD/OS Cisco HDLC */ + { DLT_C_HDLC, LINKTYPE_C_HDLC }, + + /* + * These DLT_* codes are not on all platforms, but, so far, + * there don't appear to be any platforms that define + * other codes with those values; we map them to + * different LINKTYPE_* values anyway, just in case. + */ + + /* Linux ATM Classical IP */ + { DLT_ATM_CLIP, LINKTYPE_ATM_CLIP }, + + /* NetBSD sync/async serial PPP (or Cisco HDLC) */ + { DLT_PPP_SERIAL, LINKTYPE_PPP_HDLC }, + + /* NetBSD PPP over Ethernet */ + { DLT_PPP_ETHER, LINKTYPE_PPP_ETHER }, + + /* + * All LINKTYPE_ values between LINKTYPE_MATCHING_MIN + * and LINKTYPE_MATCHING_MAX are mapped to identical + * DLT_ values. + */ + + { -1, -1 } +}; + +int +dlt_to_linktype(int dlt) +{ + int i; + + /* + * Map DLT_PFSYNC, whatever it might be, to LINKTYPE_PFSYNC. + */ + if (dlt == DLT_PFSYNC) + return (LINKTYPE_PFSYNC); + + /* + * Map the values in the matching range. + */ + if (dlt >= DLT_MATCHING_MIN && dlt <= DLT_MATCHING_MAX) + return (dlt); + + /* + * Map the values outside that range. + */ + for (i = 0; map[i].dlt != -1; i++) { + if (map[i].dlt == dlt) + return (map[i].linktype); + } + + /* + * If we don't have a mapping for this DLT_ code, return an + * error; that means that this is a value with no corresponding + * LINKTYPE_ code, and we need to assign one. + */ + return (-1); +} + +int +linktype_to_dlt(int linktype) +{ + int i; + + /* + * Map LINKTYPE_PFSYNC to DLT_PFSYNC, whatever it might be. + * LINKTYPE_PFSYNC is in the matching range, to make sure + * it's as safe from reuse as we can arrange, so we do + * this test first. + */ + if (linktype == LINKTYPE_PFSYNC) + return (DLT_PFSYNC); + + /* + * Map the values in the matching range. + */ + if (linktype >= LINKTYPE_MATCHING_MIN && + linktype <= LINKTYPE_MATCHING_MAX) + return (linktype); + + /* + * Map the values outside that range. + */ + for (i = 0; map[i].linktype != -1; i++) { + if (map[i].linktype == linktype) + return (map[i].dlt); + } + + /* + * If we don't have an entry for this link type, return + * the link type value; it may be a DLT_ value from an + * older version of libpcap. + */ + return linktype; +} + +/* + * The DLT_USB_LINUX and DLT_USB_LINUX_MMAPPED headers are in host + * byte order when capturing (it's supplied directly from a + * memory-mapped buffer shared by the kernel). + * + * When reading a DLT_USB_LINUX or DLT_USB_LINUX_MMAPPED capture file, + * we need to convert it from the capturing host's byte order to + * the reading host's byte order. + */ +void +swap_linux_usb_header(const struct pcap_pkthdr *hdr, u_char *buf, + int header_len_64_bytes) +{ + pcap_usb_header_mmapped *uhdr = (pcap_usb_header_mmapped *)buf; + bpf_u_int32 offset = 0; + usb_isodesc *pisodesc; + int32_t numdesc, i; + + /* + * "offset" is the offset *past* the field we're swapping; + * we skip the field *before* checking to make sure + * the captured data length includes the entire field. + */ + + /* + * The URB id is a totally opaque value; do we really need to + * convert it to the reading host's byte order??? + */ + offset += 8; /* skip past id */ + if (hdr->caplen < offset) + return; + uhdr->id = SWAPLL(uhdr->id); + + offset += 4; /* skip past various 1-byte fields */ + + offset += 2; /* skip past bus_id */ + if (hdr->caplen < offset) + return; + uhdr->bus_id = SWAPSHORT(uhdr->bus_id); + + offset += 2; /* skip past various 1-byte fields */ + + offset += 8; /* skip past ts_sec */ + if (hdr->caplen < offset) + return; + uhdr->ts_sec = SWAPLL(uhdr->ts_sec); + + offset += 4; /* skip past ts_usec */ + if (hdr->caplen < offset) + return; + uhdr->ts_usec = SWAPLONG(uhdr->ts_usec); + + offset += 4; /* skip past status */ + if (hdr->caplen < offset) + return; + uhdr->status = SWAPLONG(uhdr->status); + + offset += 4; /* skip past urb_len */ + if (hdr->caplen < offset) + return; + uhdr->urb_len = SWAPLONG(uhdr->urb_len); + + offset += 4; /* skip past data_len */ + if (hdr->caplen < offset) + return; + uhdr->data_len = SWAPLONG(uhdr->data_len); + + if (uhdr->transfer_type == URB_ISOCHRONOUS) { + offset += 4; /* skip past s.iso.error_count */ + if (hdr->caplen < offset) + return; + uhdr->s.iso.error_count = SWAPLONG(uhdr->s.iso.error_count); + + offset += 4; /* skip past s.iso.numdesc */ + if (hdr->caplen < offset) + return; + uhdr->s.iso.numdesc = SWAPLONG(uhdr->s.iso.numdesc); + } else + offset += 8; /* skip USB setup header */ + + if (header_len_64_bytes) { + /* + * This is either the "version 1" header, with + * 16 bytes of additional fields at the end, or + * a "version 0" header from a memory-mapped + * capture, with 16 bytes of zeroed-out padding + * at the end. Byte swap them as if this were + * a "version 1" header. + */ + offset += 4; /* skip past interval */ + if (hdr->caplen < offset) + return; + uhdr->interval = SWAPLONG(uhdr->interval); + + offset += 4; /* skip past start_frame */ + if (hdr->caplen < offset) + return; + uhdr->start_frame = SWAPLONG(uhdr->start_frame); + + offset += 4; /* skip past xfer_flags */ + if (hdr->caplen < offset) + return; + uhdr->xfer_flags = SWAPLONG(uhdr->xfer_flags); + + offset += 4; /* skip past ndesc */ + if (hdr->caplen < offset) + return; + uhdr->ndesc = SWAPLONG(uhdr->ndesc); + } + + if (uhdr->transfer_type == URB_ISOCHRONOUS) { + /* swap the values in struct linux_usb_isodesc */ + pisodesc = (usb_isodesc *)(void *)(buf+offset); + numdesc = uhdr->s.iso.numdesc; + for (i = 0; i < numdesc; i++) { + offset += 4; /* skip past status */ + if (hdr->caplen < offset) + return; + pisodesc->status = SWAPLONG(pisodesc->status); + + offset += 4; /* skip past offset */ + if (hdr->caplen < offset) + return; + pisodesc->offset = SWAPLONG(pisodesc->offset); + + offset += 4; /* skip past len */ + if (hdr->caplen < offset) + return; + pisodesc->len = SWAPLONG(pisodesc->len); + + offset += 4; /* skip past padding */ + + pisodesc++; + } + } +} diff --git a/pcap-common.h b/pcap-common.h new file mode 100644 index 0000000..0c80ba3 --- /dev/null +++ b/pcap-common.h @@ -0,0 +1,25 @@ + +/* + * We use the "receiver-makes-right" approach to byte order, + * because time is at a premium when we are writing the file. + * In other words, the pcap_file_header and pcap_pkthdr, + * records are written in host byte order. + * Note that the bytes of packet data are written out in the order in + * which they were received, so multi-byte fields in packets are not + * written in host byte order, they're written in whatever order the + * sending machine put them in. + * + * ntoh[ls] aren't sufficient because we might need to swap on a big-endian + * machine (if the file was written in little-end order). + */ +#define SWAPLONG(y) \ +((((y)&0xff)<<24) | (((y)&0xff00)<<8) | (((y)&0xff0000)>>8) | (((y)>>24)&0xff)) +#define SWAPSHORT(y) \ + ( (((y)&0xff)<<8) | ((u_short)((y)&0xff00)>>8) ) + +extern int dlt_to_linktype(int dlt); + +extern int linktype_to_dlt(int linktype); + +extern void swap_linux_usb_header(const struct pcap_pkthdr *hdr, u_char *buf, + int header_len_64_bytes); diff --git a/pcap-config.1 b/pcap-config.1 new file mode 100644 index 0000000..021f450 --- /dev/null +++ b/pcap-config.1 @@ -0,0 +1,74 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap-config.1,v 1.1 2008-09-23 18:04:01 guy Exp $ (LBL) +.\" +.\" Copyright (c) 1987, 1988, 1989, 1990, 1991, 1992, 1994, 1995, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP-CONFIG 1 "26 March 2009" +.SH NAME +pcap-config \- write libpcap compiler and linker flags to standard output +.SH SYNOPSIS +.na +.B pcap-config +[ +.B \-\-static +] +[ +.B \-\-cflags | \-\-libs | \-\-additional-libs +] +.ad +.SH DESCRIPTION +.LP +When run with the +.B \-\-cflags +option, +.I pcap-config +writes to the standard output the +.B \-I +compiler flags required to include libpcap's header files. +When run with the +.B \-\-libs +option, +.I pcap-config +writes to the standard output the +.B \-L +and +.B \-l +linker flags required to link with libpcap, including +.B \-l +flags for libraries required by libpcap. +When run with the +.B \-\-additional-libs +option, +.I pcap-config +writes to the standard output the +.B \-L +and +.B \-l +flags for libraries required by libpcap, but not the +.B \-lpcap +flag to link with libpcap itself. +.LP +By default, it writes flags appropriate for compiling with a +dynamically-linked version of libpcap; the +.B \-\-static +flag causes it to write flags appropriate for compiling with a +statically-linked version of libpcap. +.SH "SEE ALSO" +pcap(3PCAP) diff --git a/pcap-config.in b/pcap-config.in new file mode 100644 index 0000000..206be3b --- /dev/null +++ b/pcap-config.in @@ -0,0 +1,89 @@ +#! /bin/sh + +# +# Script to give the appropriate compiler flags and linker flags +# to use when building code that uses libpcap. +# +prefix="@prefix@" +exec_prefix="@exec_prefix@" +includedir="@includedir@" +libdir="@libdir@" +V_RPATH_OPT="@V_RPATH_OPT@" +LIBS="@LIBS@" + +static=0 +show_cflags=0 +show_libs=0 +while [ "$#" != 0 ] +do + case "$1" in + + --static) + static=1 + ;; + + --cflags) + show_cflags=1 + ;; + + --libs) + show_libs=1 + ;; + + --additional-libs) + show_additional_libs=1 + ;; + esac + shift +done +if [ "$V_RPATH_OPT" != "" ] +then + # + # If libdir isn't /usr/lib, add it to the run-time linker path. + # + if [ "$libdir" != "/usr/lib" ] + then + RPATH=$V_RPATH_OPT$libdir + fi +fi +if [ "$static" = 1 ] +then + # + # Include LIBS so that the flags include libraries containing + # routines that libpcap uses. + # + if [ "$show_cflags" = 1 -a "$show_libs" = 1 ] + then + echo "-I$includedir -L$libdir -lpcap $LIBS" + elif [ "$show_cflags" = 1 -a "$show_additional_libs" = 1 ] + then + echo "-I$includedir -L$libdir $LIBS" + elif [ "$show_cflags" = 1 ] + then + echo "-I$includedir" + elif [ "$show_libs" = 1 ] + then + echo "-L$libdir -lpcap $LIBS" + elif [ "$show_additional_libs" = 1 ] + then + echo "$LIBS" + fi +else + # + # Omit LIBS - libpcap is assumed to be linked with those + # libraries, so there's no need to do so explicitly. + # + if [ "$show_cflags" = 1 -a "$show_libs" = 1 ] + then + echo "-I$includedir -L$libdir $RPATH -lpcap" + elif [ "$show_cflags" = 1 -a "$show_additional_libs" = 1 ] + then + echo "-I$includedir" + elif [ "$show_cflags" = 1 ] + then + echo "-I$includedir" + elif [ "$show_libs" = 1 ] + then + echo "-L$libdir $RPATH -lpcap" + fi +fi diff --git a/pcap-dag.c b/pcap-dag.c new file mode 100644 index 0000000..b5de069 --- /dev/null +++ b/pcap-dag.c @@ -0,0 +1,1141 @@ +/* + * pcap-dag.c: Packet capture interface for Endace DAG card. + * + * The functionality of this code attempts to mimic that of pcap-linux as much + * as possible. This code is compiled in several different ways depending on + * whether DAG_ONLY and HAVE_DAG_API are defined. If HAVE_DAG_API is not + * defined it should not get compiled in, otherwise if DAG_ONLY is defined then + * the 'dag_' function calls are renamed to 'pcap_' equivalents. If DAG_ONLY + * is not defined then nothing is altered - the dag_ functions will be + * called as required from their pcap-linux/bpf equivalents. + * + * Authors: Richard Littin, Sean Irvine ({richard,sean}@reeltwo.com) + * Modifications: Jesper Peterson + * Koryn Grant + * Stephen Donnelly + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-dag.c,v 1.39 2008-04-14 20:40:58 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include /* optionally get BSD define */ + +#include +#include +#include + +#include "pcap-int.h" + +#include +#include +#include +#include +#include +#include + +struct mbuf; /* Squelch compiler warnings on some platforms for */ +struct rtentry; /* declarations in */ +#include + +#include "dagnew.h" +#include "dagapi.h" + +#include "pcap-dag.h" + +#define ATM_CELL_SIZE 52 +#define ATM_HDR_SIZE 4 + +/* + * A header containing additional MTP information. + */ +#define MTP2_SENT_OFFSET 0 /* 1 byte */ +#define MTP2_ANNEX_A_USED_OFFSET 1 /* 1 byte */ +#define MTP2_LINK_NUMBER_OFFSET 2 /* 2 bytes */ +#define MTP2_HDR_LEN 4 /* length of the header */ + +#define MTP2_ANNEX_A_NOT_USED 0 +#define MTP2_ANNEX_A_USED 1 +#define MTP2_ANNEX_A_USED_UNKNOWN 2 + +/* SunATM pseudo header */ +struct sunatm_hdr { + unsigned char flags; /* destination and traffic type */ + unsigned char vpi; /* VPI */ + unsigned short vci; /* VCI */ +}; + +typedef struct pcap_dag_node { + struct pcap_dag_node *next; + pcap_t *p; + pid_t pid; +} pcap_dag_node_t; + +static pcap_dag_node_t *pcap_dags = NULL; +static int atexit_handler_installed = 0; +static const unsigned short endian_test_word = 0x0100; + +#define IS_BIGENDIAN() (*((unsigned char *)&endian_test_word)) + + +#ifdef DAG_ONLY +/* This code is required when compiling for a DAG device only. */ + +/* Replace dag function names with pcap equivalent. */ +#define dag_create pcap_create +#define dag_platform_finddevs pcap_platform_finddevs +#endif /* DAG_ONLY */ + +#define MAX_DAG_PACKET 65536 + +static unsigned char TempPkt[MAX_DAG_PACKET]; + +static int dag_setfilter(pcap_t *p, struct bpf_program *fp); +static int dag_stats(pcap_t *p, struct pcap_stat *ps); +static int dag_set_datalink(pcap_t *p, int dlt); +static int dag_get_datalink(pcap_t *p); +static int dag_setnonblock(pcap_t *p, int nonblock, char *errbuf); + +static void +delete_pcap_dag(pcap_t *p) +{ + pcap_dag_node_t *curr = NULL, *prev = NULL; + + for (prev = NULL, curr = pcap_dags; curr != NULL && curr->p != p; prev = curr, curr = curr->next) { + /* empty */ + } + + if (curr != NULL && curr->p == p) { + if (prev != NULL) { + prev->next = curr->next; + } else { + pcap_dags = curr->next; + } + } +} + +/* + * Performs a graceful shutdown of the DAG card, frees dynamic memory held + * in the pcap_t structure, and closes the file descriptor for the DAG card. + */ + +static void +dag_platform_cleanup(pcap_t *p) +{ + + if (p != NULL) { +#ifdef HAVE_DAG_STREAMS_API + if(dag_stop_stream(p->fd, p->md.dag_stream) < 0) + fprintf(stderr,"dag_stop_stream: %s\n", strerror(errno)); + + if(dag_detach_stream(p->fd, p->md.dag_stream) < 0) + fprintf(stderr,"dag_detach_stream: %s\n", strerror(errno)); +#else + if(dag_stop(p->fd) < 0) + fprintf(stderr,"dag_stop: %s\n", strerror(errno)); +#endif /* HAVE_DAG_STREAMS_API */ + if(p->fd != -1) { + if(dag_close(p->fd) < 0) + fprintf(stderr,"dag_close: %s\n", strerror(errno)); + p->fd = -1; + } + delete_pcap_dag(p); + pcap_cleanup_live_common(p); + } + /* Note: don't need to call close(p->fd) here as dag_close(p->fd) does this. */ +} + +static void +atexit_handler(void) +{ + while (pcap_dags != NULL) { + if (pcap_dags->pid == getpid()) { + dag_platform_cleanup(pcap_dags->p); + } else { + delete_pcap_dag(pcap_dags->p); + } + } +} + +static int +new_pcap_dag(pcap_t *p) +{ + pcap_dag_node_t *node = NULL; + + if ((node = malloc(sizeof(pcap_dag_node_t))) == NULL) { + return -1; + } + + if (!atexit_handler_installed) { + atexit(atexit_handler); + atexit_handler_installed = 1; + } + + node->next = pcap_dags; + node->p = p; + node->pid = getpid(); + + pcap_dags = node; + + return 0; +} + +static unsigned int +dag_erf_ext_header_count(uint8_t * erf, size_t len) +{ + uint32_t hdr_num = 0; + uint8_t hdr_type; + + /* basic sanity checks */ + if ( erf == NULL ) + return 0; + if ( len < 16 ) + return 0; + + /* check if we have any extension headers */ + if ( (erf[8] & 0x80) == 0x00 ) + return 0; + + /* loop over the extension headers */ + do { + + /* sanity check we have enough bytes */ + if ( len <= (24 + (hdr_num * 8)) ) + return hdr_num; + + /* get the header type */ + hdr_type = erf[(16 + (hdr_num * 8))]; + hdr_num++; + + } while ( hdr_type & 0x80 ); + + return hdr_num; +} + +/* + * Read at most max_packets from the capture stream and call the callback + * for each of them. Returns the number of packets handled, -1 if an + * error occured, or -2 if we were told to break out of the loop. + */ +static int +dag_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user) +{ + unsigned int processed = 0; + int flags = p->md.dag_offset_flags; + unsigned int nonblocking = flags & DAGF_NONBLOCK; + unsigned int num_ext_hdr = 0; + + /* Get the next bufferful of packets (if necessary). */ + while (p->md.dag_mem_top - p->md.dag_mem_bottom < dag_record_size) { + + /* + * Has "pcap_breakloop()" been called? + */ + if (p->break_loop) { + /* + * Yes - clear the flag that indicates that + * it has, and return -2 to indicate that + * we were told to break out of the loop. + */ + p->break_loop = 0; + return -2; + } + +#ifdef HAVE_DAG_STREAMS_API + /* dag_advance_stream() will block (unless nonblock is called) + * until 64kB of data has accumulated. + * If to_ms is set, it will timeout before 64kB has accumulated. + * We wait for 64kB because processing a few packets at a time + * can cause problems at high packet rates (>200kpps) due + * to inefficiencies. + * This does mean if to_ms is not specified the capture may 'hang' + * for long periods if the data rate is extremely slow (<64kB/sec) + * If non-block is specified it will return immediately. The user + * is then responsible for efficiency. + */ + if ( NULL == (p->md.dag_mem_top = dag_advance_stream(p->fd, p->md.dag_stream, &(p->md.dag_mem_bottom))) ) { + return -1; + } +#else + /* dag_offset does not support timeouts */ + p->md.dag_mem_top = dag_offset(p->fd, &(p->md.dag_mem_bottom), flags); +#endif /* HAVE_DAG_STREAMS_API */ + + if (nonblocking && (p->md.dag_mem_top - p->md.dag_mem_bottom < dag_record_size)) + { + /* Pcap is configured to process only available packets, and there aren't any, return immediately. */ + return 0; + } + + if(!nonblocking && + p->md.dag_timeout && + (p->md.dag_mem_top - p->md.dag_mem_bottom < dag_record_size)) + { + /* Blocking mode, but timeout set and no data has arrived, return anyway.*/ + return 0; + } + + } + + /* Process the packets. */ + while (p->md.dag_mem_top - p->md.dag_mem_bottom >= dag_record_size) { + + unsigned short packet_len = 0; + int caplen = 0; + struct pcap_pkthdr pcap_header; + +#ifdef HAVE_DAG_STREAMS_API + dag_record_t *header = (dag_record_t *)(p->md.dag_mem_bottom); +#else + dag_record_t *header = (dag_record_t *)(p->md.dag_mem_base + p->md.dag_mem_bottom); +#endif /* HAVE_DAG_STREAMS_API */ + + u_char *dp = ((u_char *)header); /* + dag_record_size; */ + unsigned short rlen; + + /* + * Has "pcap_breakloop()" been called? + */ + if (p->break_loop) { + /* + * Yes - clear the flag that indicates that + * it has, and return -2 to indicate that + * we were told to break out of the loop. + */ + p->break_loop = 0; + return -2; + } + + rlen = ntohs(header->rlen); + if (rlen < dag_record_size) + { + strncpy(p->errbuf, "dag_read: record too small", PCAP_ERRBUF_SIZE); + return -1; + } + p->md.dag_mem_bottom += rlen; + + /* Count lost packets. */ + switch((header->type & 0x7f)) { + /* in these types the color value overwrites the lctr */ + case TYPE_COLOR_HDLC_POS: + case TYPE_COLOR_ETH: + case TYPE_DSM_COLOR_HDLC_POS: + case TYPE_DSM_COLOR_ETH: + case TYPE_COLOR_MC_HDLC_POS: + case TYPE_COLOR_HASH_ETH: + case TYPE_COLOR_HASH_POS: + break; + + default: + if (header->lctr) { + if (p->md.stat.ps_drop > (UINT_MAX - ntohs(header->lctr))) { + p->md.stat.ps_drop = UINT_MAX; + } else { + p->md.stat.ps_drop += ntohs(header->lctr); + } + } + } + + if ((header->type & 0x7f) == TYPE_PAD) { + continue; + } + + num_ext_hdr = dag_erf_ext_header_count(dp, rlen); + + /* ERF encapsulation */ + /* The Extensible Record Format is not dropped for this kind of encapsulation, + * and will be handled as a pseudo header by the decoding application. + * The information carried in the ERF header and in the optional subheader (if present) + * could be merged with the libpcap information, to offer a better decoding. + * The packet length is + * o the length of the packet on the link (header->wlen), + * o plus the length of the ERF header (dag_record_size), as the length of the + * pseudo header will be adjusted during the decoding, + * o plus the length of the optional subheader (if present). + * + * The capture length is header.rlen and the byte stuffing for alignment will be dropped + * if the capture length is greater than the packet length. + */ + if (p->linktype == DLT_ERF) { + packet_len = ntohs(header->wlen) + dag_record_size; + caplen = rlen; + switch ((header->type & 0x7f)) { + case TYPE_MC_AAL5: + case TYPE_MC_ATM: + case TYPE_MC_HDLC: + case TYPE_MC_RAW_CHANNEL: + case TYPE_MC_RAW: + case TYPE_MC_AAL2: + case TYPE_COLOR_MC_HDLC_POS: + packet_len += 4; /* MC header */ + break; + + case TYPE_COLOR_HASH_ETH: + case TYPE_DSM_COLOR_ETH: + case TYPE_COLOR_ETH: + case TYPE_ETH: + packet_len += 2; /* ETH header */ + break; + } /* switch type */ + + /* Include ERF extension headers */ + packet_len += (8 * num_ext_hdr); + + if (caplen > packet_len) { + caplen = packet_len; + } + } else { + /* Other kind of encapsulation according to the header Type */ + + /* Skip over generic ERF header */ + dp += dag_record_size; + /* Skip over extension headers */ + dp += 8 * num_ext_hdr; + + switch((header->type & 0x7f)) { + case TYPE_ATM: + case TYPE_AAL5: + if (header->type == TYPE_AAL5) { + packet_len = ntohs(header->wlen); + caplen = rlen - dag_record_size; + } + case TYPE_MC_ATM: + if (header->type == TYPE_MC_ATM) { + caplen = packet_len = ATM_CELL_SIZE; + dp+=4; + } + case TYPE_MC_AAL5: + if (header->type == TYPE_MC_AAL5) { + packet_len = ntohs(header->wlen); + caplen = rlen - dag_record_size - 4; + dp+=4; + } + if (header->type == TYPE_ATM) { + caplen = packet_len = ATM_CELL_SIZE; + } + if (p->linktype == DLT_SUNATM) { + struct sunatm_hdr *sunatm = (struct sunatm_hdr *)dp; + unsigned long rawatm; + + rawatm = ntohl(*((unsigned long *)dp)); + sunatm->vci = htons((rawatm >> 4) & 0xffff); + sunatm->vpi = (rawatm >> 20) & 0x00ff; + sunatm->flags = ((header->flags.iface & 1) ? 0x80 : 0x00) | + ((sunatm->vpi == 0 && sunatm->vci == htons(5)) ? 6 : + ((sunatm->vpi == 0 && sunatm->vci == htons(16)) ? 5 : + ((dp[ATM_HDR_SIZE] == 0xaa && + dp[ATM_HDR_SIZE+1] == 0xaa && + dp[ATM_HDR_SIZE+2] == 0x03) ? 2 : 1))); + + } else { + packet_len -= ATM_HDR_SIZE; + caplen -= ATM_HDR_SIZE; + dp += ATM_HDR_SIZE; + } + break; + + case TYPE_COLOR_HASH_ETH: + case TYPE_DSM_COLOR_ETH: + case TYPE_COLOR_ETH: + case TYPE_ETH: + packet_len = ntohs(header->wlen); + packet_len -= (p->md.dag_fcs_bits >> 3); + caplen = rlen - dag_record_size - 2; + if (caplen > packet_len) { + caplen = packet_len; + } + dp += 2; + break; + + case TYPE_COLOR_HASH_POS: + case TYPE_DSM_COLOR_HDLC_POS: + case TYPE_COLOR_HDLC_POS: + case TYPE_HDLC_POS: + packet_len = ntohs(header->wlen); + packet_len -= (p->md.dag_fcs_bits >> 3); + caplen = rlen - dag_record_size; + if (caplen > packet_len) { + caplen = packet_len; + } + break; + + case TYPE_COLOR_MC_HDLC_POS: + case TYPE_MC_HDLC: + packet_len = ntohs(header->wlen); + packet_len -= (p->md.dag_fcs_bits >> 3); + caplen = rlen - dag_record_size - 4; + if (caplen > packet_len) { + caplen = packet_len; + } + /* jump the MC_HDLC_HEADER */ + dp += 4; +#ifdef DLT_MTP2_WITH_PHDR + if (p->linktype == DLT_MTP2_WITH_PHDR) { + /* Add the MTP2 Pseudo Header */ + caplen += MTP2_HDR_LEN; + packet_len += MTP2_HDR_LEN; + + TempPkt[MTP2_SENT_OFFSET] = 0; + TempPkt[MTP2_ANNEX_A_USED_OFFSET] = MTP2_ANNEX_A_USED_UNKNOWN; + *(TempPkt+MTP2_LINK_NUMBER_OFFSET) = ((header->rec.mc_hdlc.mc_header>>16)&0x01); + *(TempPkt+MTP2_LINK_NUMBER_OFFSET+1) = ((header->rec.mc_hdlc.mc_header>>24)&0xff); + memcpy(TempPkt+MTP2_HDR_LEN, dp, caplen); + dp = TempPkt; + } +#endif + break; + + case TYPE_IPV4: + case TYPE_IPV6: + packet_len = ntohs(header->wlen); + caplen = rlen - dag_record_size; + if (caplen > packet_len) { + caplen = packet_len; + } + break; + + /* These types have no matching 'native' DLT, but can be used with DLT_ERF above */ + case TYPE_MC_RAW: + case TYPE_MC_RAW_CHANNEL: + case TYPE_IP_COUNTER: + case TYPE_TCP_FLOW_COUNTER: + case TYPE_INFINIBAND: + case TYPE_RAW_LINK: + case TYPE_INFINIBAND_LINK: + default: + /* Unhandled ERF type. + * Ignore rather than generating error + */ + continue; + } /* switch type */ + + /* Skip over extension headers */ + caplen -= (8 * num_ext_hdr); + + } /* ERF encapsulation */ + + if (caplen > p->snapshot) + caplen = p->snapshot; + + /* Run the packet filter if there is one. */ + if ((p->fcode.bf_insns == NULL) || bpf_filter(p->fcode.bf_insns, dp, packet_len, caplen)) { + + /* convert between timestamp formats */ + register unsigned long long ts; + + if (IS_BIGENDIAN()) { + ts = SWAPLL(header->ts); + } else { + ts = header->ts; + } + + pcap_header.ts.tv_sec = ts >> 32; + ts = (ts & 0xffffffffULL) * 1000000; + ts += 0x80000000; /* rounding */ + pcap_header.ts.tv_usec = ts >> 32; + if (pcap_header.ts.tv_usec >= 1000000) { + pcap_header.ts.tv_usec -= 1000000; + pcap_header.ts.tv_sec++; + } + + /* Fill in our own header data */ + pcap_header.caplen = caplen; + pcap_header.len = packet_len; + + /* Count the packet. */ + p->md.stat.ps_recv++; + + /* Call the user supplied callback function */ + callback(user, &pcap_header, dp); + + /* Only count packets that pass the filter, for consistency with standard Linux behaviour. */ + processed++; + if (processed == cnt && cnt > 0) + { + /* Reached the user-specified limit. */ + return cnt; + } + } + } + + return processed; +} + +static int +dag_inject(pcap_t *p, const void *buf _U_, size_t size _U_) +{ + strlcpy(p->errbuf, "Sending packets isn't supported on DAG cards", + PCAP_ERRBUF_SIZE); + return (-1); +} + +/* + * Get a handle for a live capture from the given DAG device. Passing a NULL + * device will result in a failure. The promisc flag is ignored because DAG + * cards are always promiscuous. The to_ms parameter is used in setting the + * API polling parameters. + * + * snaplen is now also ignored, until we get per-stream slen support. Set + * slen with approprite DAG tool BEFORE pcap_activate(). + * + * See also pcap(3). + */ +static int dag_activate(pcap_t* handle) +{ +#if 0 + char conf[30]; /* dag configure string */ +#endif + char *s; + int n; + daginf_t* daginf; + char * newDev = NULL; + char * device = handle->opt.source; +#ifdef HAVE_DAG_STREAMS_API + uint32_t mindata; + struct timeval maxwait; + struct timeval poll; +#endif + + if (device == NULL) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "device is NULL: %s", pcap_strerror(errno)); + return -1; + } + + /* Initialize some components of the pcap structure. */ + +#ifdef HAVE_DAG_STREAMS_API + newDev = (char *)malloc(strlen(device) + 16); + if (newDev == NULL) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't allocate string for device name: %s\n", pcap_strerror(errno)); + goto fail; + } + + /* Parse input name to get dag device and stream number if provided */ + if (dag_parse_name(device, newDev, strlen(device) + 16, &handle->md.dag_stream) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_parse_name: %s\n", pcap_strerror(errno)); + goto fail; + } + device = newDev; + + if (handle->md.dag_stream%2) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_parse_name: tx (even numbered) streams not supported for capture\n"); + goto fail; + } +#else + if (strncmp(device, "/dev/", 5) != 0) { + newDev = (char *)malloc(strlen(device) + 5); + if (newDev == NULL) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't allocate string for device name: %s\n", pcap_strerror(errno)); + goto fail; + } + strcpy(newDev, "/dev/"); + strcat(newDev, device); + device = newDev; + } +#endif /* HAVE_DAG_STREAMS_API */ + + /* setup device parameters */ + if((handle->fd = dag_open((char *)device)) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_open %s: %s", device, pcap_strerror(errno)); + goto fail; + } + +#ifdef HAVE_DAG_STREAMS_API + /* Open requested stream. Can fail if already locked or on error */ + if (dag_attach_stream(handle->fd, handle->md.dag_stream, 0, 0) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_attach_stream: %s\n", pcap_strerror(errno)); + goto failclose; + } + + /* Set up default poll parameters for stream + * Can be overridden by pcap_set_nonblock() + */ + if (dag_get_stream_poll(handle->fd, handle->md.dag_stream, + &mindata, &maxwait, &poll) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_get_stream_poll: %s\n", pcap_strerror(errno)); + goto faildetach; + } + + /* Amount of data to collect in Bytes before calling callbacks. + * Important for efficiency, but can introduce latency + * at low packet rates if to_ms not set! + */ + mindata = 65536; + + /* Obey md.timeout (was to_ms) if supplied. This is a good idea! + * Recommend 10-100ms. Calls will time out even if no data arrived. + */ + maxwait.tv_sec = handle->md.timeout/1000; + maxwait.tv_usec = (handle->md.timeout%1000) * 1000; + + if (dag_set_stream_poll(handle->fd, handle->md.dag_stream, + mindata, &maxwait, &poll) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_set_stream_poll: %s\n", pcap_strerror(errno)); + goto faildetach; + } + +#else + if((handle->md.dag_mem_base = dag_mmap(handle->fd)) == MAP_FAILED) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,"dag_mmap %s: %s\n", device, pcap_strerror(errno)); + goto failclose; + } + +#endif /* HAVE_DAG_STREAMS_API */ + + /* XXX Not calling dag_configure() to set slen; this is unsafe in + * multi-stream environments as the gpp config is global. + * Once the firmware provides 'per-stream slen' this can be supported + * again via the Config API without side-effects */ +#if 0 + /* set the card snap length to the specified snaplen parameter */ + /* This is a really bad idea, as different cards have different + * valid slen ranges. Should fix in Config API. */ + if (handle->snapshot == 0 || handle->snapshot > MAX_DAG_SNAPLEN) { + handle->snapshot = MAX_DAG_SNAPLEN; + } else if (snaplen < MIN_DAG_SNAPLEN) { + handle->snapshot = MIN_DAG_SNAPLEN; + } + /* snap len has to be a multiple of 4 */ + snprintf(conf, 30, "varlen slen=%d", (snaplen + 3) & ~3); + + if(dag_configure(handle->fd, conf) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,"dag_configure %s: %s\n", device, pcap_strerror(errno)); + goto faildetach; + } +#endif + +#ifdef HAVE_DAG_STREAMS_API + if(dag_start_stream(handle->fd, handle->md.dag_stream) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_start_stream %s: %s\n", device, pcap_strerror(errno)); + goto faildetach; + } +#else + if(dag_start(handle->fd) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_start %s: %s\n", device, pcap_strerror(errno)); + goto failclose; + } +#endif /* HAVE_DAG_STREAMS_API */ + + /* + * Important! You have to ensure bottom is properly + * initialized to zero on startup, it won't give you + * a compiler warning if you make this mistake! + */ + handle->md.dag_mem_bottom = 0; + handle->md.dag_mem_top = 0; + + /* + * Find out how many FCS bits we should strip. + * First, query the card to see if it strips the FCS. + */ + daginf = dag_info(handle->fd); + if ((0x4200 == daginf->device_code) || (0x4230 == daginf->device_code)) { + /* DAG 4.2S and 4.23S already strip the FCS. Stripping the final word again truncates the packet. */ + handle->md.dag_fcs_bits = 0; + + /* Note that no FCS will be supplied. */ + handle->linktype_ext = LT_FCS_DATALINK_EXT(0); + } else { + /* + * Start out assuming it's 32 bits. + */ + handle->md.dag_fcs_bits = 32; + + /* Allow an environment variable to override. */ + if ((s = getenv("ERF_FCS_BITS")) != NULL) { + if ((n = atoi(s)) == 0 || n == 16 || n == 32) { + handle->md.dag_fcs_bits = n; + } else { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "pcap_activate %s: bad ERF_FCS_BITS value (%d) in environment\n", device, n); + goto failstop; + } + } + + /* + * Did the user request that they not be stripped? + */ + if ((s = getenv("ERF_DONT_STRIP_FCS")) != NULL) { + /* Yes. Note the number of bytes that will be + supplied. */ + handle->linktype_ext = LT_FCS_DATALINK_EXT(handle->md.dag_fcs_bits/16); + + /* And don't strip them. */ + handle->md.dag_fcs_bits = 0; + } + } + + handle->md.dag_timeout = handle->md.timeout; + + handle->linktype = -1; + if (dag_get_datalink(handle) < 0) + goto failstop; + + handle->bufsize = 0; + + if (new_pcap_dag(handle) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "new_pcap_dag %s: %s\n", device, pcap_strerror(errno)); + goto failstop; + } + + /* + * "select()" and "poll()" don't work on DAG device descriptors. + */ + handle->selectable_fd = -1; + + if (newDev != NULL) { + free((char *)newDev); + } + + handle->read_op = dag_read; + handle->inject_op = dag_inject; + handle->setfilter_op = dag_setfilter; + handle->setdirection_op = NULL; /* Not implemented.*/ + handle->set_datalink_op = dag_set_datalink; + handle->getnonblock_op = pcap_getnonblock_fd; + handle->setnonblock_op = dag_setnonblock; + handle->stats_op = dag_stats; + handle->cleanup_op = dag_platform_cleanup; + handle->md.stat.ps_drop = 0; + handle->md.stat.ps_recv = 0; + handle->md.stat.ps_ifdrop = 0; + return 0; + +#ifdef HAVE_DAG_STREAMS_API +failstop: + if (dag_stop_stream(handle->fd, handle->md.dag_stream) < 0) { + fprintf(stderr,"dag_stop_stream: %s\n", strerror(errno)); + } + +faildetach: + if (dag_detach_stream(handle->fd, handle->md.dag_stream) < 0) + fprintf(stderr,"dag_detach_stream: %s\n", strerror(errno)); +#else +failstop: + if (dag_stop(handle->fd) < 0) + fprintf(stderr,"dag_stop: %s\n", strerror(errno)); +#endif /* HAVE_DAG_STREAMS_API */ + +failclose: + if (dag_close(handle->fd) < 0) + fprintf(stderr,"dag_close: %s\n", strerror(errno)); + delete_pcap_dag(handle); + +fail: + pcap_cleanup_live_common(handle); + if (newDev != NULL) { + free((char *)newDev); + } + + return PCAP_ERROR; +} + +pcap_t *dag_create(const char *device, char *ebuf) +{ + pcap_t *p; + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return NULL; + + p->activate_op = dag_activate; + return p; +} + +static int +dag_stats(pcap_t *p, struct pcap_stat *ps) { + /* This needs to be filled out correctly. Hopefully a dagapi call will + provide all necessary information. + */ + /*p->md.stat.ps_recv = 0;*/ + /*p->md.stat.ps_drop = 0;*/ + + *ps = p->md.stat; + + return 0; +} + +/* + * Previously we just generated a list of all possible names and let + * pcap_add_if() attempt to open each one, but with streams this adds up + * to 81 possibilities which is inefficient. + * + * Since we know more about the devices we can prune the tree here. + * pcap_add_if() will still retest each device but the total number of + * open attempts will still be much less than the naive approach. + */ +int +dag_platform_finddevs(pcap_if_t **devlistp, char *errbuf) +{ + char name[12]; /* XXX - pick a size */ + int ret = 0; + int c; + char dagname[DAGNAME_BUFSIZE]; + int dagstream; + int dagfd; + + /* Try all the DAGs 0-31 */ + for (c = 0; c < 32; c++) { + snprintf(name, 12, "dag%d", c); + if (-1 == dag_parse_name(name, dagname, DAGNAME_BUFSIZE, &dagstream)) + { + return -1; + } + if ( (dagfd = dag_open(dagname)) >= 0 ) { + if (pcap_add_if(devlistp, name, 0, NULL, errbuf) == -1) { + /* + * Failure. + */ + ret = -1; + } +#ifdef HAVE_DAG_STREAMS_API + { + int stream, rxstreams; + rxstreams = dag_rx_get_stream_count(dagfd); + for(stream=0;streamerrbuf, "setfilter: No filter specified", + sizeof(p->errbuf)); + return -1; + } + + /* Make our private copy of the filter */ + + if (install_bpf_program(p, fp) < 0) + return -1; + + p->md.use_bpf = 0; + + return (0); +} + +static int +dag_set_datalink(pcap_t *p, int dlt) +{ + p->linktype = dlt; + + return (0); +} + +static int +dag_setnonblock(pcap_t *p, int nonblock, char *errbuf) +{ + /* + * Set non-blocking mode on the FD. + * XXX - is that necessary? If not, don't bother calling it, + * and have a "dag_getnonblock()" function that looks at + * "p->md.dag_offset_flags". + */ + if (pcap_setnonblock_fd(p, nonblock, errbuf) < 0) + return (-1); +#ifdef HAVE_DAG_STREAMS_API + { + uint32_t mindata; + struct timeval maxwait; + struct timeval poll; + + if (dag_get_stream_poll(p->fd, p->md.dag_stream, + &mindata, &maxwait, &poll) < 0) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, "dag_get_stream_poll: %s\n", pcap_strerror(errno)); + return -1; + } + + /* Amount of data to collect in Bytes before calling callbacks. + * Important for efficiency, but can introduce latency + * at low packet rates if to_ms not set! + */ + if(nonblock) + mindata = 0; + else + mindata = 65536; + + if (dag_set_stream_poll(p->fd, p->md.dag_stream, + mindata, &maxwait, &poll) < 0) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, "dag_set_stream_poll: %s\n", pcap_strerror(errno)); + return -1; + } + } +#endif /* HAVE_DAG_STREAMS_API */ + if (nonblock) { + p->md.dag_offset_flags |= DAGF_NONBLOCK; + } else { + p->md.dag_offset_flags &= ~DAGF_NONBLOCK; + } + return (0); +} + +static int +dag_get_datalink(pcap_t *p) +{ + int index=0, dlt_index=0; + uint8_t types[255]; + + memset(types, 0, 255); + + if (p->dlt_list == NULL && (p->dlt_list = malloc(255*sizeof(*(p->dlt_list)))) == NULL) { + (void)snprintf(p->errbuf, sizeof(p->errbuf), "malloc: %s", pcap_strerror(errno)); + return (-1); + } + + p->linktype = 0; + +#ifdef HAVE_DAG_GET_STREAM_ERF_TYPES + /* Get list of possible ERF types for this card */ + if (dag_get_stream_erf_types(p->fd, p->md.dag_stream, types, 255) < 0) { + snprintf(p->errbuf, sizeof(p->errbuf), "dag_get_stream_erf_types: %s", pcap_strerror(errno)); + return (-1); + } + + while (types[index]) { + +#elif defined HAVE_DAG_GET_ERF_TYPES + /* Get list of possible ERF types for this card */ + if (dag_get_erf_types(p->fd, types, 255) < 0) { + snprintf(p->errbuf, sizeof(p->errbuf), "dag_get_erf_types: %s", pcap_strerror(errno)); + return (-1); + } + + while (types[index]) { +#else + /* Check the type through a dagapi call. */ + types[index] = dag_linktype(p->fd); + + { +#endif + switch((types[index] & 0x7f)) { + + case TYPE_HDLC_POS: + case TYPE_COLOR_HDLC_POS: + case TYPE_DSM_COLOR_HDLC_POS: + case TYPE_COLOR_HASH_POS: + + if (p->dlt_list != NULL) { + p->dlt_list[dlt_index++] = DLT_CHDLC; + p->dlt_list[dlt_index++] = DLT_PPP_SERIAL; + p->dlt_list[dlt_index++] = DLT_FRELAY; + } + if(!p->linktype) + p->linktype = DLT_CHDLC; + break; + + case TYPE_ETH: + case TYPE_COLOR_ETH: + case TYPE_DSM_COLOR_ETH: + case TYPE_COLOR_HASH_ETH: + /* + * This is (presumably) a real Ethernet capture; give it a + * link-layer-type list with DLT_EN10MB and DLT_DOCSIS, so + * that an application can let you choose it, in case you're + * capturing DOCSIS traffic that a Cisco Cable Modem + * Termination System is putting out onto an Ethernet (it + * doesn't put an Ethernet header onto the wire, it puts raw + * DOCSIS frames out on the wire inside the low-level + * Ethernet framing). + */ + if (p->dlt_list != NULL) { + p->dlt_list[dlt_index++] = DLT_EN10MB; + p->dlt_list[dlt_index++] = DLT_DOCSIS; + } + if(!p->linktype) + p->linktype = DLT_EN10MB; + break; + + case TYPE_ATM: + case TYPE_AAL5: + case TYPE_MC_ATM: + case TYPE_MC_AAL5: + if (p->dlt_list != NULL) { + p->dlt_list[dlt_index++] = DLT_ATM_RFC1483; + p->dlt_list[dlt_index++] = DLT_SUNATM; + } + if(!p->linktype) + p->linktype = DLT_ATM_RFC1483; + break; + + case TYPE_COLOR_MC_HDLC_POS: + case TYPE_MC_HDLC: + if (p->dlt_list != NULL) { + p->dlt_list[dlt_index++] = DLT_CHDLC; + p->dlt_list[dlt_index++] = DLT_PPP_SERIAL; + p->dlt_list[dlt_index++] = DLT_FRELAY; + p->dlt_list[dlt_index++] = DLT_MTP2; + p->dlt_list[dlt_index++] = DLT_MTP2_WITH_PHDR; + p->dlt_list[dlt_index++] = DLT_LAPD; + } + if(!p->linktype) + p->linktype = DLT_CHDLC; + break; + + case TYPE_IPV4: + case TYPE_IPV6: + if(!p->linktype) + p->linktype = DLT_RAW; + break; + + case TYPE_LEGACY: + case TYPE_MC_RAW: + case TYPE_MC_RAW_CHANNEL: + case TYPE_IP_COUNTER: + case TYPE_TCP_FLOW_COUNTER: + case TYPE_INFINIBAND: + case TYPE_RAW_LINK: + case TYPE_INFINIBAND_LINK: + default: + /* Libpcap cannot deal with these types yet */ + /* Add no 'native' DLTs, but still covered by DLT_ERF */ + break; + + } /* switch */ + index++; + } + + p->dlt_list[dlt_index++] = DLT_ERF; + + p->dlt_count = dlt_index; + + if(!p->linktype) + p->linktype = DLT_ERF; + + return p->linktype; +} diff --git a/pcap-dag.h b/pcap-dag.h new file mode 100644 index 0000000..fcdef7b --- /dev/null +++ b/pcap-dag.h @@ -0,0 +1,108 @@ +/* + * pcap-dag.c: Packet capture interface for Endace DAG card. + * + * The functionality of this code attempts to mimic that of pcap-linux as much + * as possible. This code is only needed when compiling in the DAG card code + * at the same time as another type of device. + * + * Author: Richard Littin, Sean Irvine ({richard,sean}@reeltwo.com) + * + * @(#) $Header: /tcpdump/master/libpcap/pcap-dag.h,v 1.7 2008-04-04 19:37:45 guy Exp $ (LBL) + */ + +pcap_t *dag_create(const char *, char *); +int dag_platform_finddevs(pcap_if_t **devlistp, char *errbuf); + +#ifndef TYPE_AAL5 +#define TYPE_AAL5 4 +#endif + +#ifndef TYPE_MC_HDLC +#define TYPE_MC_HDLC 5 +#endif + +#ifndef TYPE_MC_RAW +#define TYPE_MC_RAW 6 +#endif + +#ifndef TYPE_MC_ATM +#define TYPE_MC_ATM 7 +#endif + +#ifndef TYPE_MC_RAW_CHANNEL +#define TYPE_MC_RAW_CHANNEL 8 +#endif + +#ifndef TYPE_MC_AAL5 +#define TYPE_MC_AAL5 9 +#endif + +#ifndef TYPE_COLOR_HDLC_POS +#define TYPE_COLOR_HDLC_POS 10 +#endif + +#ifndef TYPE_COLOR_ETH +#define TYPE_COLOR_ETH 11 +#endif + +#ifndef TYPE_MC_AAL2 +#define TYPE_MC_AAL2 12 +#endif + +#ifndef TYPE_IP_COUNTER +#define TYPE_IP_COUNTER 13 +#endif + +#ifndef TYPE_TCP_FLOW_COUNTER +#define TYPE_TCP_FLOW_COUNTER 14 +#endif + +#ifndef TYPE_DSM_COLOR_HDLC_POS +#define TYPE_DSM_COLOR_HDLC_POS 15 +#endif + +#ifndef TYPE_DSM_COLOR_ETH +#define TYPE_DSM_COLOR_ETH 16 +#endif + +#ifndef TYPE_COLOR_MC_HDLC_POS +#define TYPE_COLOR_MC_HDLC_POS 17 +#endif + +#ifndef TYPE_AAL2 +#define TYPE_AAL2 18 +#endif + +#ifndef TYPE_COLOR_HASH_POS +#define TYPE_COLOR_HASH_POS 19 +#endif + +#ifndef TYPE_COLOR_HASH_ETH +#define TYPE_COLOR_HASH_ETH 20 +#endif + +#ifndef TYPE_INFINIBAND +#define TYPE_INFINIBAND 21 +#endif + +#ifndef TYPE_IPV4 +#define TYPE_IPV4 22 +#endif + +#ifndef TYPE_IPV6 +#define TYPE_IPV6 23 +#endif + +#ifndef TYPE_RAW_LINK +#define TYPE_RAW_LINK 24 +#endif + +#ifndef TYPE_INFINIBAND_LINK +#define TYPE_INFINIBAND_LINK 25 +#endif + + + +#ifndef TYPE_PAD +#define TYPE_PAD 48 +#endif diff --git a/pcap-dlpi.c b/pcap-dlpi.c new file mode 100644 index 0000000..78bb451 --- /dev/null +++ b/pcap-dlpi.c @@ -0,0 +1,1708 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * This code contributed by Atanu Ghosh (atanu@cs.ucl.ac.uk), + * University College London, and subsequently modified by + * Guy Harris (guy@alum.mit.edu), Mark Pizzolato + * , + * Mark C. Brown (mbrown@hp.com), and Sagun Shakya . + */ + +/* + * Packet capture routine for DLPI under SunOS 5, HP-UX 9/10/11, and AIX. + * + * Notes: + * + * - The DLIOCRAW ioctl() is specific to SunOS. + * + * - There is a bug in bufmod(7) such that setting the snapshot + * length results in data being left of the front of the packet. + * + * - It might be desirable to use pfmod(7) to filter packets in the + * kernel when possible. + * + * - An older version of the HP-UX DLPI Programmer's Guide, which + * I think was advertised as the 10.20 version, used to be available + * at + * + * http://docs.hp.com/hpux/onlinedocs/B2355-90093/B2355-90093.html + * + * but is no longer available; it can still be found at + * + * http://h21007.www2.hp.com/dspp/files/unprotected/Drivers/Docs/Refs/B2355-90093.pdf + * + * in PDF form. + * + * - The HP-UX 10.x, 11.0, and 11i v1.6 version of the HP-UX DLPI + * Programmer's Guide, which I think was once advertised as the + * 11.00 version is available at + * + * http://docs.hp.com/en/B2355-90139/index.html + * + * - The HP-UX 11i v2 version of the HP-UX DLPI Programmer's Guide + * is available at + * + * http://docs.hp.com/en/B2355-90871/index.html + * + * - All of the HP documents describe raw-mode services, which are + * what we use if DL_HP_RAWDLS is defined. XXX - we use __hpux + * in some places to test for HP-UX, but use DL_HP_RAWDLS in + * other places; do we support any versions of HP-UX without + * DL_HP_RAWDLS? + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-dlpi.c,v 1.128 2008-12-02 16:20:23 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#ifdef HAVE_SYS_BUFMOD_H +#include +#endif +#include +#ifdef HAVE_SYS_DLPI_EXT_H +#include +#endif +#ifdef HAVE_HPUX9 +#include +#endif +#ifdef DL_HP_PPA_REQ +#include +#endif +#include +#if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H) +#include +#endif + +#ifdef HAVE_HPUX9 +#include +#endif + +#include +#ifdef HAVE_HPUX9 +#include +#endif +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef HAVE_LIMITS_H +#include +#else +#define INT_MAX 2147483647 +#endif + +#include "pcap-int.h" +#include "dlpisubs.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +#ifndef PCAP_DEV_PREFIX +#ifdef _AIX +#define PCAP_DEV_PREFIX "/dev/dlpi" +#else +#define PCAP_DEV_PREFIX "/dev" +#endif +#endif + +#define MAXDLBUF 8192 + +/* Forwards */ +static char *split_dname(char *, int *, char *); +static int dl_doattach(int, int, char *); +#ifdef DL_HP_RAWDLS +static int dl_dohpuxbind(int, char *); +#endif +static int dlpromiscon(pcap_t *, bpf_u_int32); +static int dlbindreq(int, bpf_u_int32, char *); +static int dlbindack(int, char *, char *, int *); +static int dlokack(int, const char *, char *, char *); +static int dlinforeq(int, char *); +static int dlinfoack(int, char *, char *); + +#ifdef HAVE_DLPI_PASSIVE +static void dlpassive(int, char *); +#endif + +#ifdef DL_HP_RAWDLS +static int dlrawdatareq(int, const u_char *, int); +#endif +static int recv_ack(int, int, const char *, char *, char *, int *); +static char *dlstrerror(bpf_u_int32); +static char *dlprim(bpf_u_int32); +#if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H) +static char *get_release(bpf_u_int32 *, bpf_u_int32 *, bpf_u_int32 *); +#endif +static int send_request(int, char *, int, char *, char *); +#ifdef HAVE_HPUX9 +static int dlpi_kread(int, off_t, void *, u_int, char *); +#endif +#ifdef HAVE_DEV_DLPI +static int get_dlpi_ppa(int, const char *, int, char *); +#endif + +/* XXX Needed by HP-UX (at least) */ +static bpf_u_int32 ctlbuf[MAXDLBUF]; +static struct strbuf ctl = { + MAXDLBUF, + 0, + (char *)ctlbuf +}; + +/* + * Cast a buffer to "union DL_primitives" without provoking warnings + * from the compiler. + */ +#define MAKE_DL_PRIMITIVES(ptr) ((union DL_primitives *)(void *)(ptr)) + +static int +pcap_read_dlpi(pcap_t *p, int cnt, pcap_handler callback, u_char *user) +{ + int cc; + u_char *bp; + int flags; + struct strbuf data; + + flags = 0; + cc = p->cc; + if (cc == 0) { + data.buf = (char *)p->buffer + p->offset; + data.maxlen = p->bufsize; + data.len = 0; + do { + /* + * Has "pcap_breakloop()" been called? + */ + if (p->break_loop) { + /* + * Yes - clear the flag that indicates + * that it has, and return -2 to + * indicate that we were told to + * break out of the loop. + */ + p->break_loop = 0; + return (-2); + } + /* + * XXX - check for the DLPI primitive, which + * would be DL_HP_RAWDATA_IND on HP-UX + * if we're in raw mode? + */ + if (getmsg(p->fd, &ctl, &data, &flags) < 0) { + /* Don't choke when we get ptraced */ + switch (errno) { + + case EINTR: + cc = 0; + continue; + + case EAGAIN: + return (0); + } + strlcpy(p->errbuf, pcap_strerror(errno), + sizeof(p->errbuf)); + return (-1); + } + cc = data.len; + } while (cc == 0); + bp = p->buffer + p->offset; + } else + bp = p->bp; + + return (pcap_process_pkts(p, callback, user, cnt, bp, cc)); +} + +static int +pcap_inject_dlpi(pcap_t *p, const void *buf, size_t size) +{ + int ret; + +#if defined(DLIOCRAW) + ret = write(p->fd, buf, size); + if (ret == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send: %s", + pcap_strerror(errno)); + return (-1); + } +#elif defined(DL_HP_RAWDLS) + if (p->send_fd < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "send: Output FD couldn't be opened"); + return (-1); + } + ret = dlrawdatareq(p->send_fd, buf, size); + if (ret == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send: %s", + pcap_strerror(errno)); + return (-1); + } + /* + * putmsg() returns either 0 or -1; it doesn't indicate how + * many bytes were written (presumably they were all written + * or none of them were written). OpenBSD's pcap_inject() + * returns the number of bytes written, so, for API compatibility, + * we return the number of bytes we were told to write. + */ + ret = size; +#else /* no raw mode */ + /* + * XXX - this is a pain, because you might have to extract + * the address from the packet and use it in a DL_UNITDATA_REQ + * request. That would be dependent on the link-layer type. + * + * I also don't know what SAP you'd have to bind the descriptor + * to, or whether you'd need separate "receive" and "send" FDs, + * nor do I know whether you'd need different bindings for + * D/I/X Ethernet and 802.3, or for {FDDI,Token Ring} plus + * 802.2 and {FDDI,Token Ring} plus 802.2 plus SNAP. + * + * So, for now, we just return a "you can't send" indication, + * and leave it up to somebody with a DLPI-based system lacking + * both DLIOCRAW and DL_HP_RAWDLS to supply code to implement + * packet transmission on that system. If they do, they should + * send it to us - but should not send us code that assumes + * Ethernet; if the code doesn't work on non-Ethernet interfaces, + * it should check "p->linktype" and reject the send request if + * it's anything other than DLT_EN10MB. + */ + strlcpy(p->errbuf, "send: Not supported on this version of this OS", + PCAP_ERRBUF_SIZE); + ret = -1; +#endif /* raw mode */ + return (ret); +} + +#ifndef DL_IPATM +#define DL_IPATM 0x12 /* ATM Classical IP interface */ +#endif + +#ifdef HAVE_SOLARIS +/* + * For SunATM. + */ +#ifndef A_GET_UNITS +#define A_GET_UNITS (('A'<<8)|118) +#endif /* A_GET_UNITS */ +#ifndef A_PROMISCON_REQ +#define A_PROMISCON_REQ (('A'<<8)|121) +#endif /* A_PROMISCON_REQ */ +#endif /* HAVE_SOLARIS */ + +static void +pcap_cleanup_dlpi(pcap_t *p) +{ + if (p->send_fd >= 0) { + close(p->send_fd); + p->send_fd = -1; + } + pcap_cleanup_live_common(p); +} + +static int +pcap_activate_dlpi(pcap_t *p) +{ + register char *cp; + int ppa; +#ifdef HAVE_SOLARIS + int isatm = 0; +#endif + register dl_info_ack_t *infop; +#ifdef HAVE_SYS_BUFMOD_H + bpf_u_int32 ss; +#ifdef HAVE_SOLARIS + register char *release; + bpf_u_int32 osmajor, osminor, osmicro; +#endif +#endif + bpf_u_int32 buf[MAXDLBUF]; + char dname[100]; +#ifndef HAVE_DEV_DLPI + char dname2[100]; +#endif + int status = PCAP_ERROR; + +#ifdef HAVE_DEV_DLPI + /* + ** Remove any "/dev/" on the front of the device. + */ + cp = strrchr(p->opt.source, '/'); + if (cp == NULL) + strlcpy(dname, p->opt.source, sizeof(dname)); + else + strlcpy(dname, cp + 1, sizeof(dname)); + + /* + * Split the device name into a device type name and a unit number; + * chop off the unit number, so "dname" is just a device type name. + */ + cp = split_dname(dname, &ppa, p->errbuf); + if (cp == NULL) { + status = PCAP_ERROR_NO_SUCH_DEVICE; + goto bad; + } + *cp = '\0'; + + /* + * Use "/dev/dlpi" as the device. + * + * XXX - HP's DLPI Programmer's Guide for HP-UX 11.00 says that + * the "dl_mjr_num" field is for the "major number of interface + * driver"; that's the major of "/dev/dlpi" on the system on + * which I tried this, but there may be DLPI devices that + * use a different driver, in which case we may need to + * search "/dev" for the appropriate device with that major + * device number, rather than hardwiring "/dev/dlpi". + */ + cp = "/dev/dlpi"; + if ((p->fd = open(cp, O_RDWR)) < 0) { + if (errno == EPERM || errno == EACCES) + status = PCAP_ERROR_PERM_DENIED; + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "%s: %s", cp, pcap_strerror(errno)); + goto bad; + } + +#ifdef DL_HP_RAWDLS + /* + * XXX - HP-UX 10.20 and 11.xx don't appear to support sending and + * receiving packets on the same descriptor - you need separate + * descriptors for sending and receiving, bound to different SAPs. + * + * If the open fails, we just leave -1 in "p->send_fd" and reject + * attempts to send packets, just as if, in pcap-bpf.c, we fail + * to open the BPF device for reading and writing, we just try + * to open it for reading only and, if that succeeds, just let + * the send attempts fail. + */ + p->send_fd = open(cp, O_RDWR); +#endif + + /* + * Get a table of all PPAs for that device, and search that + * table for the specified device type name and unit number. + */ + ppa = get_dlpi_ppa(p->fd, dname, ppa, p->errbuf); + if (ppa < 0) { + status = ppa; + goto bad; + } +#else + /* + * If the device name begins with "/", assume it begins with + * the pathname of the directory containing the device to open; + * otherwise, concatenate the device directory name and the + * device name. + */ + if (*p->opt.source == '/') + strlcpy(dname, p->opt.source, sizeof(dname)); + else + snprintf(dname, sizeof(dname), "%s/%s", PCAP_DEV_PREFIX, + p->opt.source); + + /* + * Get the unit number, and a pointer to the end of the device + * type name. + */ + cp = split_dname(dname, &ppa, p->errbuf); + if (cp == NULL) { + status = PCAP_ERROR_NO_SUCH_DEVICE; + goto bad; + } + + /* + * Make a copy of the device pathname, and then remove the unit + * number from the device pathname. + */ + strlcpy(dname2, dname, sizeof(dname)); + *cp = '\0'; + + /* Try device without unit number */ + if ((p->fd = open(dname, O_RDWR)) < 0) { + if (errno != ENOENT) { + if (errno == EPERM || errno == EACCES) + status = PCAP_ERROR_PERM_DENIED; + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "%s: %s", dname, + pcap_strerror(errno)); + goto bad; + } + + /* Try again with unit number */ + if ((p->fd = open(dname2, O_RDWR)) < 0) { + if (errno == ENOENT) { + status = PCAP_ERROR_NO_SUCH_DEVICE; + + /* + * We provide an error message even + * for this error, for diagnostic + * purposes (so that, for example, + * the app can show the message if the + * user requests it). + * + * In it, we just report "No DLPI device + * found" with the device name, so people + * don't get confused and think, for example, + * that if they can't capture on "lo0" + * on Solaris the fix is to change libpcap + * (or the application that uses it) to + * look for something other than "/dev/lo0", + * as the fix is to look for an operating + * system other than Solaris - you just + * *can't* capture on a loopback interface + * on Solaris, the lack of a DLPI device + * for the loopback interface is just a + * symptom of that inability. + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "%s: No DLPI device found", p->opt.source); + } else { + if (errno == EPERM || errno == EACCES) + status = PCAP_ERROR_PERM_DENIED; + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "%s: %s", + dname2, pcap_strerror(errno)); + } + goto bad; + } + /* XXX Assume unit zero */ + ppa = 0; + } +#endif + + /* + ** Attach if "style 2" provider + */ + if (dlinforeq(p->fd, p->errbuf) < 0 || + dlinfoack(p->fd, (char *)buf, p->errbuf) < 0) + goto bad; + infop = &(MAKE_DL_PRIMITIVES(buf))->info_ack; +#ifdef HAVE_SOLARIS + if (infop->dl_mac_type == DL_IPATM) + isatm = 1; +#endif + if (infop->dl_provider_style == DL_STYLE2) { + status = dl_doattach(p->fd, ppa, p->errbuf); + if (status < 0) + goto bad; +#ifdef DL_HP_RAWDLS + if (p->send_fd >= 0) { + if (dl_doattach(p->send_fd, ppa, p->errbuf) < 0) + goto bad; + } +#endif + } + + if (p->opt.rfmon) { + /* + * This device exists, but we don't support monitor mode + * any platforms that support DLPI. + */ + status = PCAP_ERROR_RFMON_NOTSUP; + goto bad; + } + +#ifdef HAVE_DLPI_PASSIVE + /* + * Enable Passive mode to be able to capture on aggregated link. + * Not supported in all Solaris versions. + */ + dlpassive(p->fd, p->errbuf); +#endif + /* + ** Bind (defer if using HP-UX 9 or HP-UX 10.20 or later, totally + ** skip if using SINIX) + */ +#if !defined(HAVE_HPUX9) && !defined(HAVE_HPUX10_20_OR_LATER) && !defined(sinix) +#ifdef _AIX + /* + ** AIX. + ** According to IBM's AIX Support Line, the dl_sap value + ** should not be less than 0x600 (1536) for standard Ethernet. + ** However, we seem to get DL_BADADDR - "DLSAP addr in improper + ** format or invalid" - errors if we use 1537 on the "tr0" + ** device, which, given that its name starts with "tr" and that + ** it's IBM, probably means a Token Ring device. (Perhaps we + ** need to use 1537 on "/dev/dlpi/en" because that device is for + ** D/I/X Ethernet, the "SAP" is actually an Ethernet type, and + ** it rejects invalid Ethernet types.) + ** + ** So if 1537 fails, we try 2, as Hyung Sik Yoon of IBM Korea + ** says that works on Token Ring (he says that 0 does *not* + ** work; perhaps that's considered an invalid LLC SAP value - I + ** assume the SAP value in a DLPI bind is an LLC SAP for network + ** types that use 802.2 LLC). + */ + if ((dlbindreq(p->fd, 1537, p->errbuf) < 0 && + dlbindreq(p->fd, 2, p->errbuf) < 0) || + dlbindack(p->fd, (char *)buf, p->errbuf, NULL) < 0) + goto bad; +#elif defined(DL_HP_RAWDLS) + /* + ** HP-UX 10.0x and 10.1x. + */ + if (dl_dohpuxbind(p->fd, p->errbuf) < 0) + goto bad; + if (p->send_fd >= 0) { + /* + ** XXX - if this fails, just close send_fd and + ** set it to -1, so that you can't send but can + ** still receive? + */ + if (dl_dohpuxbind(p->send_fd, p->errbuf) < 0) + goto bad; + } +#else /* neither AIX nor HP-UX */ + /* + ** Not Sinix, and neither AIX nor HP-UX - Solaris, and any other + ** OS using DLPI. + **/ + if (dlbindreq(p->fd, 0, p->errbuf) < 0 || + dlbindack(p->fd, (char *)buf, p->errbuf, NULL) < 0) + goto bad; +#endif /* AIX vs. HP-UX vs. other */ +#endif /* !HP-UX 9 and !HP-UX 10.20 or later and !SINIX */ + +#ifdef HAVE_SOLARIS + if (isatm) { + /* + ** Have to turn on some special ATM promiscuous mode + ** for SunATM. + ** Do *NOT* turn regular promiscuous mode on; it doesn't + ** help, and may break things. + */ + if (strioctl(p->fd, A_PROMISCON_REQ, 0, NULL) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "A_PROMISCON_REQ: %s", pcap_strerror(errno)); + goto bad; + } + } else +#endif + if (p->opt.promisc) { + /* + ** Enable promiscuous (not necessary on send FD) + */ + status = dlpromiscon(p, DL_PROMISC_PHYS); + if (status < 0) { + if (status == PCAP_ERROR_PERM_DENIED) + status = PCAP_ERROR_PROMISC_PERM_DENIED; + goto bad; + } + + /* + ** Try to enable multicast (you would have thought + ** promiscuous would be sufficient). (Skip if using + ** HP-UX or SINIX) (Not necessary on send FD) + */ +#if !defined(__hpux) && !defined(sinix) + status = dlpromiscon(p, DL_PROMISC_MULTI); + if (status < 0) + status = PCAP_WARNING; +#endif + } + /* + ** Try to enable SAP promiscuity (when not in promiscuous mode + ** when using HP-UX, when not doing SunATM on Solaris, and never + ** under SINIX) (Not necessary on send FD) + */ +#ifndef sinix +#if defined(__hpux) + /* HP-UX - only do this when not in promiscuous mode */ + if (!p->opt.promisc) { +#elif defined(HAVE_SOLARIS) + /* Solaris - don't do this on SunATM devices */ + if (!isatm) { +#else + /* Everything else (except for SINIX) - always do this */ + { +#endif + status = dlpromiscon(p, DL_PROMISC_SAP); + if (status < 0) { + /* + * Not fatal, since the DL_PROMISC_PHYS mode worked. + * Report it as a warning, however. + */ + if (p->opt.promisc) + status = PCAP_WARNING; + else + goto bad; + } + } +#endif /* sinix */ + + /* + ** HP-UX 9, and HP-UX 10.20 or later, must bind after setting + ** promiscuous options. + */ +#if defined(HAVE_HPUX9) || defined(HAVE_HPUX10_20_OR_LATER) + if (dl_dohpuxbind(p->fd, p->errbuf) < 0) + goto bad; + /* + ** We don't set promiscuous mode on the send FD, but we'll defer + ** binding it anyway, just to keep the HP-UX 9/10.20 or later + ** code together. + */ + if (p->send_fd >= 0) { + /* + ** XXX - if this fails, just close send_fd and + ** set it to -1, so that you can't send but can + ** still receive? + */ + if (dl_dohpuxbind(p->send_fd, p->errbuf) < 0) + goto bad; + } +#endif + + /* + ** Determine link type + ** XXX - get SAP length and address length as well, for use + ** when sending packets. + */ + if (dlinforeq(p->fd, p->errbuf) < 0 || + dlinfoack(p->fd, (char *)buf, p->errbuf) < 0) + goto bad; + + infop = &(MAKE_DL_PRIMITIVES(buf))->info_ack; + if (pcap_process_mactype(p, infop->dl_mac_type) != 0) + goto bad; + +#ifdef DLIOCRAW + /* + ** This is a non standard SunOS hack to get the full raw link-layer + ** header. + */ + if (strioctl(p->fd, DLIOCRAW, 0, NULL) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "DLIOCRAW: %s", + pcap_strerror(errno)); + goto bad; + } +#endif + +#ifdef HAVE_SYS_BUFMOD_H + ss = p->snapshot; + + /* + ** There is a bug in bufmod(7). When dealing with messages of + ** less than snaplen size it strips data from the beginning not + ** the end. + ** + ** This bug is fixed in 5.3.2. Also, there is a patch available. + ** Ask for bugid 1149065. + */ +#ifdef HAVE_SOLARIS + release = get_release(&osmajor, &osminor, &osmicro); + if (osmajor == 5 && (osminor <= 2 || (osminor == 3 && osmicro < 2)) && + getenv("BUFMOD_FIXED") == NULL) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "WARNING: bufmod is broken in SunOS %s; ignoring snaplen.", + release); + ss = 0; + status = PCAP_WARNING; + } +#endif + + /* Push and configure bufmod. */ + if (pcap_conf_bufmod(p, ss, p->md.timeout) != 0) + goto bad; +#endif + + /* + ** As the last operation flush the read side. + */ + if (ioctl(p->fd, I_FLUSH, FLUSHR) != 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "FLUSHR: %s", + pcap_strerror(errno)); + goto bad; + } + + /* Allocate data buffer. */ + if (pcap_alloc_databuf(p) != 0) + goto bad; + + /* Success - but perhaps with a warning */ + if (status < 0) + status = 0; + + /* + * "p->fd" is an FD for a STREAMS device, so "select()" and + * "poll()" should work on it. + */ + p->selectable_fd = p->fd; + + p->read_op = pcap_read_dlpi; + p->inject_op = pcap_inject_dlpi; + p->setfilter_op = install_bpf_program; /* no kernel filtering */ + p->setdirection_op = NULL; /* Not implemented.*/ + p->set_datalink_op = NULL; /* can't change data link type */ + p->getnonblock_op = pcap_getnonblock_fd; + p->setnonblock_op = pcap_setnonblock_fd; + p->stats_op = pcap_stats_dlpi; + p->cleanup_op = pcap_cleanup_dlpi; + + return (status); +bad: + pcap_cleanup_dlpi(p); + return (status); +} + +/* + * Split a device name into a device type name and a unit number; + * return the a pointer to the beginning of the unit number, which + * is the end of the device type name, and set "*unitp" to the unit + * number. + * + * Returns NULL on error, and fills "ebuf" with an error message. + */ +static char * +split_dname(char *device, int *unitp, char *ebuf) +{ + char *cp; + char *eos; + long unit; + + /* + * Look for a number at the end of the device name string. + */ + cp = device + strlen(device) - 1; + if (*cp < '0' || *cp > '9') { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s missing unit number", + device); + return (NULL); + } + + /* Digits at end of string are unit number */ + while (cp-1 >= device && *(cp-1) >= '0' && *(cp-1) <= '9') + cp--; + + errno = 0; + unit = strtol(cp, &eos, 10); + if (*eos != '\0') { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s bad unit number", device); + return (NULL); + } + if (errno == ERANGE || unit > INT_MAX) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s unit number too large", + device); + return (NULL); + } + if (unit < 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s unit number is negative", + device); + return (NULL); + } + *unitp = (int)unit; + return (cp); +} + +static int +dl_doattach(int fd, int ppa, char *ebuf) +{ + dl_attach_req_t req; + bpf_u_int32 buf[MAXDLBUF]; + int err; + + req.dl_primitive = DL_ATTACH_REQ; + req.dl_ppa = ppa; + if (send_request(fd, (char *)&req, sizeof(req), "attach", ebuf) < 0) + return (PCAP_ERROR); + + err = dlokack(fd, "attach", (char *)buf, ebuf); + if (err < 0) + return (err); + return (0); +} + +#ifdef DL_HP_RAWDLS +static int +dl_dohpuxbind(int fd, char *ebuf) +{ + int hpsap; + int uerror; + bpf_u_int32 buf[MAXDLBUF]; + + /* + * XXX - we start at 22 because we used to use only 22, but + * that was just because that was the value used in some + * sample code from HP. With what value *should* we start? + * Does it matter, given that we're enabling SAP promiscuity + * on the input FD? + */ + hpsap = 22; + for (;;) { + if (dlbindreq(fd, hpsap, ebuf) < 0) + return (-1); + if (dlbindack(fd, (char *)buf, ebuf, &uerror) >= 0) + break; + /* + * For any error other than a UNIX EBUSY, give up. + */ + if (uerror != EBUSY) { + /* + * dlbindack() has already filled in ebuf for + * this error. + */ + return (-1); + } + + /* + * For EBUSY, try the next SAP value; that means that + * somebody else is using that SAP. Clear ebuf so + * that application doesn't report the "Device busy" + * error as a warning. + */ + *ebuf = '\0'; + hpsap++; + if (hpsap > 100) { + strlcpy(ebuf, + "All SAPs from 22 through 100 are in use", + PCAP_ERRBUF_SIZE); + return (-1); + } + } + return (0); +} +#endif + +#define STRINGIFY(n) #n + +static int +dlpromiscon(pcap_t *p, bpf_u_int32 level) +{ + dl_promiscon_req_t req; + bpf_u_int32 buf[MAXDLBUF]; + int err; + + req.dl_primitive = DL_PROMISCON_REQ; + req.dl_level = level; + if (send_request(p->fd, (char *)&req, sizeof(req), "promiscon", + p->errbuf) < 0) + return (PCAP_ERROR); + err = dlokack(p->fd, "promiscon" STRINGIFY(level), (char *)buf, + p->errbuf); + if (err < 0) + return (err); + return (0); +} + +int +pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf) +{ +#ifdef HAVE_SOLARIS + int fd; + union { + u_int nunits; + char pad[516]; /* XXX - must be at least 513; is 516 + in "atmgetunits" */ + } buf; + char baname[2+1+1]; + u_int i; + + /* + * We may have to do special magic to get ATM devices. + */ + if ((fd = open("/dev/ba", O_RDWR)) < 0) { + /* + * We couldn't open the "ba" device. + * For now, just give up; perhaps we should + * return an error if the problem is neither + * a "that device doesn't exist" error (ENOENT, + * ENXIO, etc.) or a "you're not allowed to do + * that" error (EPERM, EACCES). + */ + return (0); + } + + if (strioctl(fd, A_GET_UNITS, sizeof(buf), (char *)&buf) < 0) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, "A_GET_UNITS: %s", + pcap_strerror(errno)); + return (-1); + } + for (i = 0; i < buf.nunits; i++) { + snprintf(baname, sizeof baname, "ba%u", i); + if (pcap_add_if(alldevsp, baname, 0, NULL, errbuf) < 0) + return (-1); + } +#endif + + return (0); +} + +static int +send_request(int fd, char *ptr, int len, char *what, char *ebuf) +{ + struct strbuf ctl; + int flags; + + ctl.maxlen = 0; + ctl.len = len; + ctl.buf = ptr; + + flags = 0; + if (putmsg(fd, &ctl, (struct strbuf *) NULL, flags) < 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "send_request: putmsg \"%s\": %s", + what, pcap_strerror(errno)); + return (-1); + } + return (0); +} + +static int +recv_ack(int fd, int size, const char *what, char *bufp, char *ebuf, int *uerror) +{ + union DL_primitives *dlp; + struct strbuf ctl; + int flags; + + /* + * Clear out "*uerror", so it's only set for DL_ERROR_ACK/DL_SYSERR, + * making that the only place where EBUSY is treated specially. + */ + if (uerror != NULL) + *uerror = 0; + + ctl.maxlen = MAXDLBUF; + ctl.len = 0; + ctl.buf = bufp; + + flags = 0; + if (getmsg(fd, &ctl, (struct strbuf*)NULL, &flags) < 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "recv_ack: %s getmsg: %s", + what, pcap_strerror(errno)); + return (PCAP_ERROR); + } + + dlp = MAKE_DL_PRIMITIVES(ctl.buf); + switch (dlp->dl_primitive) { + + case DL_INFO_ACK: + case DL_BIND_ACK: + case DL_OK_ACK: +#ifdef DL_HP_PPA_ACK + case DL_HP_PPA_ACK: +#endif + /* These are OK */ + break; + + case DL_ERROR_ACK: + switch (dlp->error_ack.dl_errno) { + + case DL_SYSERR: + if (uerror != NULL) + *uerror = dlp->error_ack.dl_unix_errno; + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "recv_ack: %s: UNIX error - %s", + what, pcap_strerror(dlp->error_ack.dl_unix_errno)); + if (dlp->error_ack.dl_unix_errno == EPERM || + dlp->error_ack.dl_unix_errno == EACCES) + return (PCAP_ERROR_PERM_DENIED); + break; + + default: + snprintf(ebuf, PCAP_ERRBUF_SIZE, "recv_ack: %s: %s", + what, dlstrerror(dlp->error_ack.dl_errno)); + if (dlp->error_ack.dl_errno == DL_BADPPA) + return (PCAP_ERROR_NO_SUCH_DEVICE); + else if (dlp->error_ack.dl_errno == DL_ACCESS) + return (PCAP_ERROR_PERM_DENIED); + break; + } + return (PCAP_ERROR); + + default: + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "recv_ack: %s: Unexpected primitive ack %s", + what, dlprim(dlp->dl_primitive)); + return (PCAP_ERROR); + } + + if (ctl.len < size) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "recv_ack: %s: Ack too small (%d < %d)", + what, ctl.len, size); + return (PCAP_ERROR); + } + return (ctl.len); +} + +static char * +dlstrerror(bpf_u_int32 dl_errno) +{ + static char errstring[6+2+8+1]; + + switch (dl_errno) { + + case DL_ACCESS: + return ("Improper permissions for request"); + + case DL_BADADDR: + return ("DLSAP addr in improper format or invalid"); + + case DL_BADCORR: + return ("Seq number not from outstand DL_CONN_IND"); + + case DL_BADDATA: + return ("User data exceeded provider limit"); + + case DL_BADPPA: +#ifdef HAVE_DEV_DLPI + /* + * With a single "/dev/dlpi" device used for all + * DLPI providers, PPAs have nothing to do with + * unit numbers. + */ + return ("Specified PPA was invalid"); +#else + /* + * We have separate devices for separate devices; + * the PPA is just the unit number. + */ + return ("Specified PPA (device unit) was invalid"); +#endif + + case DL_BADPRIM: + return ("Primitive received not known by provider"); + + case DL_BADQOSPARAM: + return ("QOS parameters contained invalid values"); + + case DL_BADQOSTYPE: + return ("QOS structure type is unknown/unsupported"); + + case DL_BADSAP: + return ("Bad LSAP selector"); + + case DL_BADTOKEN: + return ("Token used not an active stream"); + + case DL_BOUND: + return ("Attempted second bind with dl_max_conind"); + + case DL_INITFAILED: + return ("Physical link initialization failed"); + + case DL_NOADDR: + return ("Provider couldn't allocate alternate address"); + + case DL_NOTINIT: + return ("Physical link not initialized"); + + case DL_OUTSTATE: + return ("Primitive issued in improper state"); + + case DL_SYSERR: + return ("UNIX system error occurred"); + + case DL_UNSUPPORTED: + return ("Requested service not supplied by provider"); + + case DL_UNDELIVERABLE: + return ("Previous data unit could not be delivered"); + + case DL_NOTSUPPORTED: + return ("Primitive is known but not supported"); + + case DL_TOOMANY: + return ("Limit exceeded"); + + case DL_NOTENAB: + return ("Promiscuous mode not enabled"); + + case DL_BUSY: + return ("Other streams for PPA in post-attached"); + + case DL_NOAUTO: + return ("Automatic handling XID&TEST not supported"); + + case DL_NOXIDAUTO: + return ("Automatic handling of XID not supported"); + + case DL_NOTESTAUTO: + return ("Automatic handling of TEST not supported"); + + case DL_XIDAUTO: + return ("Automatic handling of XID response"); + + case DL_TESTAUTO: + return ("Automatic handling of TEST response"); + + case DL_PENDING: + return ("Pending outstanding connect indications"); + + default: + sprintf(errstring, "Error %02x", dl_errno); + return (errstring); + } +} + +static char * +dlprim(bpf_u_int32 prim) +{ + static char primbuf[80]; + + switch (prim) { + + case DL_INFO_REQ: + return ("DL_INFO_REQ"); + + case DL_INFO_ACK: + return ("DL_INFO_ACK"); + + case DL_ATTACH_REQ: + return ("DL_ATTACH_REQ"); + + case DL_DETACH_REQ: + return ("DL_DETACH_REQ"); + + case DL_BIND_REQ: + return ("DL_BIND_REQ"); + + case DL_BIND_ACK: + return ("DL_BIND_ACK"); + + case DL_UNBIND_REQ: + return ("DL_UNBIND_REQ"); + + case DL_OK_ACK: + return ("DL_OK_ACK"); + + case DL_ERROR_ACK: + return ("DL_ERROR_ACK"); + + case DL_SUBS_BIND_REQ: + return ("DL_SUBS_BIND_REQ"); + + case DL_SUBS_BIND_ACK: + return ("DL_SUBS_BIND_ACK"); + + case DL_UNITDATA_REQ: + return ("DL_UNITDATA_REQ"); + + case DL_UNITDATA_IND: + return ("DL_UNITDATA_IND"); + + case DL_UDERROR_IND: + return ("DL_UDERROR_IND"); + + case DL_UDQOS_REQ: + return ("DL_UDQOS_REQ"); + + case DL_CONNECT_REQ: + return ("DL_CONNECT_REQ"); + + case DL_CONNECT_IND: + return ("DL_CONNECT_IND"); + + case DL_CONNECT_RES: + return ("DL_CONNECT_RES"); + + case DL_CONNECT_CON: + return ("DL_CONNECT_CON"); + + case DL_TOKEN_REQ: + return ("DL_TOKEN_REQ"); + + case DL_TOKEN_ACK: + return ("DL_TOKEN_ACK"); + + case DL_DISCONNECT_REQ: + return ("DL_DISCONNECT_REQ"); + + case DL_DISCONNECT_IND: + return ("DL_DISCONNECT_IND"); + + case DL_RESET_REQ: + return ("DL_RESET_REQ"); + + case DL_RESET_IND: + return ("DL_RESET_IND"); + + case DL_RESET_RES: + return ("DL_RESET_RES"); + + case DL_RESET_CON: + return ("DL_RESET_CON"); + + default: + (void) sprintf(primbuf, "unknown primitive 0x%x", prim); + return (primbuf); + } +} + +static int +dlbindreq(int fd, bpf_u_int32 sap, char *ebuf) +{ + + dl_bind_req_t req; + + memset((char *)&req, 0, sizeof(req)); + req.dl_primitive = DL_BIND_REQ; + /* XXX - what if neither of these are defined? */ +#if defined(DL_HP_RAWDLS) + req.dl_max_conind = 1; /* XXX magic number */ + req.dl_service_mode = DL_HP_RAWDLS; +#elif defined(DL_CLDLS) + req.dl_service_mode = DL_CLDLS; +#endif + req.dl_sap = sap; + + return (send_request(fd, (char *)&req, sizeof(req), "bind", ebuf)); +} + +static int +dlbindack(int fd, char *bufp, char *ebuf, int *uerror) +{ + + return (recv_ack(fd, DL_BIND_ACK_SIZE, "bind", bufp, ebuf, uerror)); +} + +static int +dlokack(int fd, const char *what, char *bufp, char *ebuf) +{ + + return (recv_ack(fd, DL_OK_ACK_SIZE, what, bufp, ebuf, NULL)); +} + + +static int +dlinforeq(int fd, char *ebuf) +{ + dl_info_req_t req; + + req.dl_primitive = DL_INFO_REQ; + + return (send_request(fd, (char *)&req, sizeof(req), "info", ebuf)); +} + +static int +dlinfoack(int fd, char *bufp, char *ebuf) +{ + + return (recv_ack(fd, DL_INFO_ACK_SIZE, "info", bufp, ebuf, NULL)); +} + +#ifdef HAVE_DLPI_PASSIVE +/* + * Enable DLPI passive mode. We do not care if this request fails, as this + * indicates the underlying DLPI device does not support link aggregation. + */ +static void +dlpassive(int fd, char *ebuf) +{ + dl_passive_req_t req; + bpf_u_int32 buf[MAXDLBUF]; + + req.dl_primitive = DL_PASSIVE_REQ; + + if (send_request(fd, (char *)&req, sizeof(req), "dlpassive", ebuf) == 0) + (void) dlokack(fd, "dlpassive", (char *)buf, ebuf); +} +#endif + +#ifdef DL_HP_RAWDLS +/* + * There's an ack *if* there's an error. + */ +static int +dlrawdatareq(int fd, const u_char *datap, int datalen) +{ + struct strbuf ctl, data; + long buf[MAXDLBUF]; /* XXX - char? */ + union DL_primitives *dlp; + int dlen; + + dlp = MAKE_DL_PRIMITIVES(buf); + + dlp->dl_primitive = DL_HP_RAWDATA_REQ; + dlen = DL_HP_RAWDATA_REQ_SIZE; + + /* + * HP's documentation doesn't appear to show us supplying any + * address pointed to by the control part of the message. + * I think that's what raw mode means - you just send the raw + * packet, you don't specify where to send it to, as that's + * implied by the destination address. + */ + ctl.maxlen = 0; + ctl.len = dlen; + ctl.buf = (void *)buf; + + data.maxlen = 0; + data.len = datalen; + data.buf = (void *)datap; + + return (putmsg(fd, &ctl, &data, 0)); +} +#endif /* DL_HP_RAWDLS */ + +#if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H) +static char * +get_release(bpf_u_int32 *majorp, bpf_u_int32 *minorp, bpf_u_int32 *microp) +{ + char *cp; + static char buf[32]; + + *majorp = 0; + *minorp = 0; + *microp = 0; + if (sysinfo(SI_RELEASE, buf, sizeof(buf)) < 0) + return ("?"); + cp = buf; + if (!isdigit((unsigned char)*cp)) + return (buf); + *majorp = strtol(cp, &cp, 10); + if (*cp++ != '.') + return (buf); + *minorp = strtol(cp, &cp, 10); + if (*cp++ != '.') + return (buf); + *microp = strtol(cp, &cp, 10); + return (buf); +} +#endif + +#ifdef DL_HP_PPA_REQ +/* + * Under HP-UX 10 and HP-UX 11, we can ask for the ppa + */ + + +/* + * Determine ppa number that specifies ifname. + * + * If the "dl_hp_ppa_info_t" doesn't have a "dl_module_id_1" member, + * the code that's used here is the old code for HP-UX 10.x. + * + * However, HP-UX 10.20, at least, appears to have such a member + * in its "dl_hp_ppa_info_t" structure, so the new code is used. + * The new code didn't work on an old 10.20 system on which Rick + * Jones of HP tried it, but with later patches installed, it + * worked - it appears that the older system had those members but + * didn't put anything in them, so, if the search by name fails, we + * do the old search. + * + * Rick suggests that making sure your system is "up on the latest + * lancommon/DLPI/driver patches" is probably a good idea; it'd fix + * that problem, as well as allowing libpcap to see packets sent + * from the system on which the libpcap application is being run. + * (On 10.20, in addition to getting the latest patches, you need + * to turn the kernel "lanc_outbound_promisc_flag" flag on with ADB; + * a posting to "comp.sys.hp.hpux" at + * + * http://www.deja.com/[ST_rn=ps]/getdoc.xp?AN=558092266 + * + * says that, to see the machine's outgoing traffic, you'd need to + * apply the right patches to your system, and also set that variable + * with: + +echo 'lanc_outbound_promisc_flag/W1' | /usr/bin/adb -w /stand/vmunix /dev/kmem + + * which could be put in, for example, "/sbin/init.d/lan". + * + * Setting the variable is not necessary on HP-UX 11.x. + */ +static int +get_dlpi_ppa(register int fd, register const char *device, register int unit, + register char *ebuf) +{ + register dl_hp_ppa_ack_t *ap; + register dl_hp_ppa_info_t *ipstart, *ip; + register int i; + char dname[100]; + register u_long majdev; + struct stat statbuf; + dl_hp_ppa_req_t req; + char buf[MAXDLBUF]; + char *ppa_data_buf; + dl_hp_ppa_ack_t *dlp; + struct strbuf ctl; + int flags; + int ppa; + + memset((char *)&req, 0, sizeof(req)); + req.dl_primitive = DL_HP_PPA_REQ; + + memset((char *)buf, 0, sizeof(buf)); + if (send_request(fd, (char *)&req, sizeof(req), "hpppa", ebuf) < 0) + return (PCAP_ERROR); + + ctl.maxlen = DL_HP_PPA_ACK_SIZE; + ctl.len = 0; + ctl.buf = (char *)buf; + + flags = 0; + /* + * DLPI may return a big chunk of data for a DL_HP_PPA_REQ. The normal + * recv_ack will fail because it set the maxlen to MAXDLBUF (8192) + * which is NOT big enough for a DL_HP_PPA_REQ. + * + * This causes libpcap applications to fail on a system with HP-APA + * installed. + * + * To figure out how big the returned data is, we first call getmsg + * to get the small head and peek at the head to get the actual data + * length, and then issue another getmsg to get the actual PPA data. + */ + /* get the head first */ + if (getmsg(fd, &ctl, (struct strbuf *)NULL, &flags) < 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "get_dlpi_ppa: hpppa getmsg: %s", pcap_strerror(errno)); + return (PCAP_ERROR); + } + + dlp = (dl_hp_ppa_ack_t *)ctl.buf; + if (dlp->dl_primitive != DL_HP_PPA_ACK) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "get_dlpi_ppa: hpppa unexpected primitive ack 0x%x", + (bpf_u_int32)dlp->dl_primitive); + return (PCAP_ERROR); + } + + if (ctl.len < DL_HP_PPA_ACK_SIZE) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "get_dlpi_ppa: hpppa ack too small (%d < %lu)", + ctl.len, (unsigned long)DL_HP_PPA_ACK_SIZE); + return (PCAP_ERROR); + } + + /* allocate buffer */ + if ((ppa_data_buf = (char *)malloc(dlp->dl_length)) == NULL) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "get_dlpi_ppa: hpppa malloc: %s", pcap_strerror(errno)); + return (PCAP_ERROR); + } + ctl.maxlen = dlp->dl_length; + ctl.len = 0; + ctl.buf = (char *)ppa_data_buf; + /* get the data */ + if (getmsg(fd, &ctl, (struct strbuf *)NULL, &flags) < 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "get_dlpi_ppa: hpppa getmsg: %s", pcap_strerror(errno)); + free(ppa_data_buf); + return (PCAP_ERROR); + } + if (ctl.len < dlp->dl_length) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "get_dlpi_ppa: hpppa ack too small (%d < %lu)", + ctl.len, (unsigned long)dlp->dl_length); + free(ppa_data_buf); + return (PCAP_ERROR); + } + + ap = (dl_hp_ppa_ack_t *)buf; + ipstart = (dl_hp_ppa_info_t *)ppa_data_buf; + ip = ipstart; + +#ifdef HAVE_HP_PPA_INFO_T_DL_MODULE_ID_1 + /* + * The "dl_hp_ppa_info_t" structure has a "dl_module_id_1" + * member that should, in theory, contain the part of the + * name for the device that comes before the unit number, + * and should also have a "dl_module_id_2" member that may + * contain an alternate name (e.g., I think Ethernet devices + * have both "lan", for "lanN", and "snap", for "snapN", with + * the former being for Ethernet packets and the latter being + * for 802.3/802.2 packets). + * + * Search for the device that has the specified name and + * instance number. + */ + for (i = 0; i < ap->dl_count; i++) { + if ((strcmp((const char *)ip->dl_module_id_1, device) == 0 || + strcmp((const char *)ip->dl_module_id_2, device) == 0) && + ip->dl_instance_num == unit) + break; + + ip = (dl_hp_ppa_info_t *)((u_char *)ipstart + ip->dl_next_offset); + } +#else + /* + * We don't have that member, so the search is impossible; make it + * look as if the search failed. + */ + i = ap->dl_count; +#endif + + if (i == ap->dl_count) { + /* + * Well, we didn't, or can't, find the device by name. + * + * HP-UX 10.20, whilst it has "dl_module_id_1" and + * "dl_module_id_2" fields in the "dl_hp_ppa_info_t", + * doesn't seem to fill them in unless the system is + * at a reasonably up-to-date patch level. + * + * Older HP-UX 10.x systems might not have those fields + * at all. + * + * Therefore, we'll search for the entry with the major + * device number of a device with the name "/dev/", + * if such a device exists, as the old code did. + */ + snprintf(dname, sizeof(dname), "/dev/%s%d", device, unit); + if (stat(dname, &statbuf) < 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "stat: %s: %s", + dname, pcap_strerror(errno)); + return (PCAP_ERROR); + } + majdev = major(statbuf.st_rdev); + + ip = ipstart; + + for (i = 0; i < ap->dl_count; i++) { + if (ip->dl_mjr_num == majdev && + ip->dl_instance_num == unit) + break; + + ip = (dl_hp_ppa_info_t *)((u_char *)ipstart + ip->dl_next_offset); + } + } + if (i == ap->dl_count) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "can't find /dev/dlpi PPA for %s%d", device, unit); + return (PCAP_ERROR_NO_SUCH_DEVICE); + } + if (ip->dl_hdw_state == HDW_DEAD) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "%s%d: hardware state: DOWN\n", device, unit); + free(ppa_data_buf); + return (PCAP_ERROR); + } + ppa = ip->dl_ppa; + free(ppa_data_buf); + return (ppa); +} +#endif + +#ifdef HAVE_HPUX9 +/* + * Under HP-UX 9, there is no good way to determine the ppa. + * So punt and read it from /dev/kmem. + */ +static struct nlist nl[] = { +#define NL_IFNET 0 + { "ifnet" }, + { "" } +}; + +static char path_vmunix[] = "/hp-ux"; + +/* Determine ppa number that specifies ifname */ +static int +get_dlpi_ppa(register int fd, register const char *ifname, register int unit, + register char *ebuf) +{ + register const char *cp; + register int kd; + void *addr; + struct ifnet ifnet; + char if_name[sizeof(ifnet.if_name) + 1]; + + cp = strrchr(ifname, '/'); + if (cp != NULL) + ifname = cp + 1; + if (nlist(path_vmunix, &nl) < 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "nlist %s failed", + path_vmunix); + return (-1); + } + if (nl[NL_IFNET].n_value == 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "could't find %s kernel symbol", + nl[NL_IFNET].n_name); + return (-1); + } + kd = open("/dev/kmem", O_RDONLY); + if (kd < 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "kmem open: %s", + pcap_strerror(errno)); + return (-1); + } + if (dlpi_kread(kd, nl[NL_IFNET].n_value, + &addr, sizeof(addr), ebuf) < 0) { + close(kd); + return (-1); + } + for (; addr != NULL; addr = ifnet.if_next) { + if (dlpi_kread(kd, (off_t)addr, + &ifnet, sizeof(ifnet), ebuf) < 0 || + dlpi_kread(kd, (off_t)ifnet.if_name, + if_name, sizeof(ifnet.if_name), ebuf) < 0) { + (void)close(kd); + return (-1); + } + if_name[sizeof(ifnet.if_name)] = '\0'; + if (strcmp(if_name, ifname) == 0 && ifnet.if_unit == unit) + return (ifnet.if_index); + } + + snprintf(ebuf, PCAP_ERRBUF_SIZE, "Can't find %s", ifname); + return (-1); +} + +static int +dlpi_kread(register int fd, register off_t addr, + register void *buf, register u_int len, register char *ebuf) +{ + register int cc; + + if (lseek(fd, addr, SEEK_SET) < 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "lseek: %s", + pcap_strerror(errno)); + return (-1); + } + cc = read(fd, buf, len); + if (cc < 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "read: %s", + pcap_strerror(errno)); + return (-1); + } else if (cc != len) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "short read (%d != %d)", cc, + len); + return (-1); + } + return (cc); +} +#endif + +pcap_t * +pcap_create(const char *device, char *ebuf) +{ + pcap_t *p; + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return (NULL); + + p->send_fd = -1; /* it hasn't been opened yet */ + + p->activate_op = pcap_activate_dlpi; + return (p); +} diff --git a/pcap-dos.c b/pcap-dos.c new file mode 100644 index 0000000..bcd277f --- /dev/null +++ b/pcap-dos.c @@ -0,0 +1,1479 @@ +/* + * This file is part of DOS-libpcap + * Ported to DOS/DOSX by G. Vanem + * + * pcap-dos.c: Interface to PKTDRVR, NDIS2 and 32-bit pmode + * network drivers. + * + * @(#) $Header: /tcpdump/master/libpcap/pcap-dos.c,v 1.7 2008-04-22 17:16:30 guy Exp $ (LBL) + */ + +#include +#include +#include +#include +#include +#include +#include + +#if defined(USE_32BIT_DRIVERS) + #include "msdos/pm_drvr/pmdrvr.h" + #include "msdos/pm_drvr/pci.h" + #include "msdos/pm_drvr/bios32.h" + #include "msdos/pm_drvr/module.h" + #include "msdos/pm_drvr/3c501.h" + #include "msdos/pm_drvr/3c503.h" + #include "msdos/pm_drvr/3c509.h" + #include "msdos/pm_drvr/3c59x.h" + #include "msdos/pm_drvr/3c515.h" + #include "msdos/pm_drvr/3c90x.h" + #include "msdos/pm_drvr/3c575_cb.h" + #include "msdos/pm_drvr/ne.h" + #include "msdos/pm_drvr/wd.h" + #include "msdos/pm_drvr/accton.h" + #include "msdos/pm_drvr/cs89x0.h" + #include "msdos/pm_drvr/rtl8139.h" + #include "msdos/pm_drvr/ne2k-pci.h" +#endif + +#include "pcap.h" +#include "pcap-dos.h" +#include "pcap-int.h" +#include "msdos/pktdrvr.h" + +#ifdef USE_NDIS2 +#include "msdos/ndis2.h" +#endif + +#include +#include +#include +#include +#include +#include + +#if defined(USE_32BIT_DRIVERS) + #define FLUSHK() do { _printk_safe = 1; _printk_flush(); } while (0) + #define NDIS_NEXT_DEV &rtl8139_dev + + static char *rx_pool = NULL; + static void init_32bit (void); + + static int pktq_init (struct rx_ringbuf *q, int size, int num, char *pool); + static int pktq_check (struct rx_ringbuf *q); + static int pktq_inc_out (struct rx_ringbuf *q); + static int pktq_in_index (struct rx_ringbuf *q) LOCKED_FUNC; + static void pktq_clear (struct rx_ringbuf *q) LOCKED_FUNC; + + static struct rx_elem *pktq_in_elem (struct rx_ringbuf *q) LOCKED_FUNC; + static struct rx_elem *pktq_out_elem (struct rx_ringbuf *q); + +#else + #define FLUSHK() ((void)0) + #define NDIS_NEXT_DEV NULL +#endif + +/* + * Internal variables/functions in Watt-32 + */ +extern WORD _pktdevclass; +extern BOOL _eth_is_init; +extern int _w32_dynamic_host; +extern int _watt_do_exit; +extern int _watt_is_init; +extern int _w32__bootp_on, _w32__dhcp_on, _w32__rarp_on, _w32__do_mask_req; +extern void (*_w32_usr_post_init) (void); +extern void (*_w32_print_hook)(); + +extern void dbug_write (const char *); /* Watt-32 lib, pcdbug.c */ +extern int pkt_get_mtu (void); + +static int ref_count = 0; + +static u_long mac_count = 0; +static u_long filter_count = 0; + +static volatile BOOL exc_occured = 0; + +static struct device *handle_to_device [20]; + +static int pcap_activate_dos (pcap_t *p); +static int pcap_read_dos (pcap_t *p, int cnt, pcap_handler callback, + u_char *data); +static void pcap_cleanup_dos (pcap_t *p); +static int pcap_stats_dos (pcap_t *p, struct pcap_stat *ps); +static int pcap_sendpacket_dos (pcap_t *p, const void *buf, size_t len); +static int pcap_setfilter_dos (pcap_t *p, struct bpf_program *fp); + +static int ndis_probe (struct device *dev); +static int pkt_probe (struct device *dev); + +static void close_driver (void); +static int init_watt32 (struct pcap *pcap, const char *dev_name, char *err_buf); +static int first_init (const char *name, char *ebuf, int promisc); + +static void watt32_recv_hook (u_char *dummy, const struct pcap_pkthdr *pcap, + const u_char *buf); + +/* + * These are the device we always support + */ +static struct device ndis_dev = { + "ndis", + "NDIS2 LanManager", + 0, + 0,0,0,0,0,0, + NDIS_NEXT_DEV, /* NULL or a 32-bit device */ + ndis_probe + }; + +static struct device pkt_dev = { + "pkt", + "Packet-Driver", + 0, + 0,0,0,0,0,0, + &ndis_dev, + pkt_probe + }; + +static struct device *get_device (int fd) +{ + if (fd <= 0 || fd >= sizeof(handle_to_device)/sizeof(handle_to_device[0])) + return (NULL); + return handle_to_device [fd-1]; +} + +pcap_t *pcap_create (const char *device, char *ebuf) +{ + pcap_t *p; + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return (NULL); + + p->activate_op = pcap_activate_dos; + return (p); +} + +/* + * Open MAC-driver with name 'device_name' for live capture of + * network packets. + */ +static int pcap_activate_dos (pcap_t *pcap) +{ + if (pcap->opt.rfmon) { + /* + * No monitor mode on DOS. + */ + return (PCAP_ERROR_RFMON_NOTSUP); + } + + if (pcap->snapshot < ETH_MIN+8) + pcap->snapshot = ETH_MIN+8; + + if (pcap->snapshot > ETH_MAX) /* silently accept and truncate large MTUs */ + pcap->snapshot = ETH_MAX; + + pcap->linktype = DLT_EN10MB; /* !! */ + pcap->cleanup_op = pcap_cleanup_dos; + pcap->read_op = pcap_read_dos; + pcap->stats_op = pcap_stats_dos; + pcap->inject_op = pcap_sendpacket_dos; + pcap->setfilter_op = pcap_setfilter_dos; + pcap->setdirection_op = NULL; /* Not implemented.*/ + pcap->fd = ++ref_count; + + if (pcap->fd == 1) /* first time we're called */ + { + if (!init_watt32(pcap, pcap->opt.source, pcap->errbuf) || + !first_init(pcap->opt.source, pcap->errbuf, pcap->opt.promisc)) + { + return (PCAP_ERROR); + } + atexit (close_driver); + } + else if (stricmp(active_dev->name,pcap->opt.source)) + { + snprintf (pcap->errbuf, PCAP_ERRBUF_SIZE, + "Cannot use different devices simultaneously " + "(`%s' vs. `%s')", active_dev->name, pcap->opt.source); + return (PCAP_ERROR); + } + handle_to_device [pcap->fd-1] = active_dev; + return (0); +} + +/* + * Poll the receiver queue and call the pcap callback-handler + * with the packet. + */ +static int +pcap_read_one (pcap_t *p, pcap_handler callback, u_char *data) +{ + struct pcap_pkthdr pcap; + struct timeval now, expiry; + BYTE *rx_buf; + int rx_len = 0; + + if (p->md.timeout > 0) + { + gettimeofday2 (&now, NULL); + expiry.tv_usec = now.tv_usec + 1000UL * p->md.timeout; + expiry.tv_sec = now.tv_sec; + while (expiry.tv_usec >= 1000000L) + { + expiry.tv_usec -= 1000000L; + expiry.tv_sec++; + } + } + + while (!exc_occured) + { + volatile struct device *dev; /* might be reset by sig_handler */ + + dev = get_device (p->fd); + if (!dev) + break; + + PCAP_ASSERT (dev->copy_rx_buf || dev->peek_rx_buf); + FLUSHK(); + + /* If driver has a zero-copy receive facility, peek at the queue, + * filter it, do the callback and release the buffer. + */ + if (dev->peek_rx_buf) + { + PCAP_ASSERT (dev->release_rx_buf); + rx_len = (*dev->peek_rx_buf) (&rx_buf); + } + else + { + BYTE buf [ETH_MAX+100]; /* add some margin */ + rx_len = (*dev->copy_rx_buf) (buf, p->snapshot); + rx_buf = buf; + } + + if (rx_len > 0) /* got a packet */ + { + mac_count++; + + FLUSHK(); + + pcap.caplen = min (rx_len, p->snapshot); + pcap.len = rx_len; + + if (callback && + (!p->fcode.bf_insns || bpf_filter(p->fcode.bf_insns, rx_buf, pcap.len, pcap.caplen))) + { + filter_count++; + + /* Fix-me!! Should be time of arrival. Not time of + * capture. + */ + gettimeofday2 (&pcap.ts, NULL); + (*callback) (data, &pcap, rx_buf); + } + + if (dev->release_rx_buf) + (*dev->release_rx_buf) (rx_buf); + + if (pcap_pkt_debug > 0) + { + if (callback == watt32_recv_hook) + dbug_write ("pcap_recv_hook\n"); + else dbug_write ("pcap_read_op\n"); + } + FLUSHK(); + return (1); + } + + /* If not to wait for a packet or pcap_close() called from + * e.g. SIGINT handler, exit loop now. + */ + if (p->md.timeout <= 0 || (volatile int)p->fd <= 0) + break; + + gettimeofday2 (&now, NULL); + + if (timercmp(&now, &expiry, >)) + break; + +#ifndef DJGPP + kbhit(); /* a real CPU hog */ +#endif + + if (p->wait_proc) + (*p->wait_proc)(); /* call yield func */ + } + + if (rx_len < 0) /* receive error */ + { + p->md.stat.ps_drop++; +#ifdef USE_32BIT_DRIVERS + if (pcap_pkt_debug > 1) + printk ("pkt-err %s\n", pktInfo.error); +#endif + return (-1); + } + return (0); +} + +static int +pcap_read_dos (pcap_t *p, int cnt, pcap_handler callback, u_char *data) +{ + int rc, num = 0; + + while (num <= cnt || (cnt < 0)) + { + if (p->fd <= 0) + return (-1); + rc = pcap_read_one (p, callback, data); + if (rc > 0) + num++; + if (rc < 0) + break; + _w32_os_yield(); /* allow SIGINT generation, yield to Win95/NT */ + } + return (num); +} + +/* + * Return network statistics + */ +static int pcap_stats_dos (pcap_t *p, struct pcap_stat *ps) +{ + struct net_device_stats *stats; + struct device *dev = p ? get_device(p->fd) : NULL; + + if (!dev) + { + strcpy (p->errbuf, "illegal pcap handle"); + return (-1); + } + + if (!dev->get_stats || (stats = (*dev->get_stats)(dev)) == NULL) + { + strcpy (p->errbuf, "device statistics not available"); + return (-1); + } + + FLUSHK(); + + p->md.stat.ps_recv = stats->rx_packets; + p->md.stat.ps_drop += stats->rx_missed_errors; + p->md.stat.ps_ifdrop = stats->rx_dropped + /* queue full */ + stats->rx_errors; /* HW errors */ + if (ps) + *ps = p->md.stat; + + return (0); +} + +/* + * Return detailed network/device statistics. + * May be called after 'dev->close' is called. + */ +int pcap_stats_ex (pcap_t *p, struct pcap_stat_ex *se) +{ + struct device *dev = p ? get_device (p->fd) : NULL; + + if (!dev || !dev->get_stats) + { + strlcpy (p->errbuf, "detailed device statistics not available", + PCAP_ERRBUF_SIZE); + return (-1); + } + + if (!strnicmp(dev->name,"pkt",3)) + { + strlcpy (p->errbuf, "pktdrvr doesn't have detailed statistics", + PCAP_ERRBUF_SIZE); + return (-1); + } + memcpy (se, (*dev->get_stats)(dev), sizeof(*se)); + return (0); +} + +/* + * Simply store the filter-code for the pcap_read_dos() callback + * Some day the filter-code could be handed down to the active + * device (pkt_rx1.s or 32-bit device interrupt handler). + */ +static int pcap_setfilter_dos (pcap_t *p, struct bpf_program *fp) +{ + if (!p) + return (-1); + p->fcode = *fp; + return (0); +} + +/* + * Return # of packets received in pcap_read_dos() + */ +u_long pcap_mac_packets (void) +{ + return (mac_count); +} + +/* + * Return # of packets passed through filter in pcap_read_dos() + */ +u_long pcap_filter_packets (void) +{ + return (filter_count); +} + +/* + * Close pcap device. Not called for offline captures. + */ +static void pcap_cleanup_dos (pcap_t *p) +{ + if (p && !exc_occured) + { + if (pcap_stats(p,NULL) < 0) + p->md.stat.ps_drop = 0; + if (!get_device(p->fd)) + return; + + handle_to_device [p->fd-1] = NULL; + p->fd = 0; + if (ref_count > 0) + ref_count--; + if (ref_count > 0) + return; + } + close_driver(); +} + +/* + * Return the name of the 1st network interface, + * or NULL if none can be found. + */ +char *pcap_lookupdev (char *ebuf) +{ + struct device *dev; + +#ifdef USE_32BIT_DRIVERS + init_32bit(); +#endif + + for (dev = (struct device*)dev_base; dev; dev = dev->next) + { + PCAP_ASSERT (dev->probe); + + if ((*dev->probe)(dev)) + { + FLUSHK(); + probed_dev = (struct device*) dev; /* remember last probed device */ + return (char*) dev->name; + } + } + + if (ebuf) + strcpy (ebuf, "No driver found"); + return (NULL); +} + +/* + * Gets localnet & netmask from Watt-32. + */ +int pcap_lookupnet (const char *device, bpf_u_int32 *localnet, + bpf_u_int32 *netmask, char *errbuf) +{ + if (!_watt_is_init) + { + strcpy (errbuf, "pcap_open_offline() or pcap_activate() must be " + "called first"); + return (-1); + } + + *netmask = _w32_sin_mask; + *localnet = my_ip_addr & *netmask; + if (*localnet == 0) + { + if (IN_CLASSA(*netmask)) + *localnet = IN_CLASSA_NET; + else if (IN_CLASSB(*netmask)) + *localnet = IN_CLASSB_NET; + else if (IN_CLASSC(*netmask)) + *localnet = IN_CLASSC_NET; + else + { + sprintf (errbuf, "inet class for 0x%lx unknown", *netmask); + return (-1); + } + } + ARGSUSED (device); + return (0); +} + +/* + * Get a list of all interfaces that are present and that we probe okay. + * Returns -1 on error, 0 otherwise. + * The list, as returned through "alldevsp", may be null if no interfaces + * were up and could be opened. + */ +int pcap_findalldevs (pcap_if_t **alldevsp, char *errbuf) +{ + struct device *dev; + struct sockaddr_ll sa_ll_1, sa_ll_2; + struct sockaddr *addr, *netmask, *broadaddr, *dstaddr; + pcap_if_t *devlist = NULL; + int ret = 0; + size_t addr_size = sizeof(struct sockaddr_ll); + + for (dev = (struct device*)dev_base; dev; dev = dev->next) + { + PCAP_ASSERT (dev->probe); + + if (!(*dev->probe)(dev)) + continue; + + PCAP_ASSERT (dev->close); /* set by probe routine */ + FLUSHK(); + (*dev->close) (dev); + + memset (&sa_ll_1, 0, sizeof(sa_ll_1)); + memset (&sa_ll_2, 0, sizeof(sa_ll_2)); + sa_ll_1.sll_family = AF_PACKET; + sa_ll_2.sll_family = AF_PACKET; + + addr = (struct sockaddr*) &sa_ll_1; + netmask = (struct sockaddr*) &sa_ll_1; + dstaddr = (struct sockaddr*) &sa_ll_1; + broadaddr = (struct sockaddr*) &sa_ll_2; + memset (&sa_ll_2.sll_addr, 0xFF, sizeof(sa_ll_2.sll_addr)); + + if (pcap_add_if(&devlist, dev->name, dev->flags, + dev->long_name, errbuf) < 0) + { + ret = -1; + break; + } + if (add_addr_to_iflist(&devlist,dev->name, dev->flags, addr, addr_size, + netmask, addr_size, broadaddr, addr_size, + dstaddr, addr_size, errbuf) < 0) + { + ret = -1; + break; + } + } + + if (devlist && ret < 0) + { + pcap_freealldevs (devlist); + devlist = NULL; + } + else + if (!devlist) + strcpy (errbuf, "No drivers found"); + + *alldevsp = devlist; + return (ret); +} + +/* + * pcap_assert() is mainly used for debugging + */ +void pcap_assert (const char *what, const char *file, unsigned line) +{ + FLUSHK(); + fprintf (stderr, "%s (%u): Assertion \"%s\" failed\n", + file, line, what); + close_driver(); + _exit (-1); +} + +/* + * For pcap_offline_read(): wait and yield between printing packets + * to simulate the pace packets where actually recorded. + */ +void pcap_set_wait (pcap_t *p, void (*yield)(void), int wait) +{ + if (p) + { + p->wait_proc = yield; + p->md.timeout = wait; + } +} + +/* + * Initialise a named network device. + */ +static struct device * +open_driver (const char *dev_name, char *ebuf, int promisc) +{ + struct device *dev; + + for (dev = (struct device*)dev_base; dev; dev = dev->next) + { + PCAP_ASSERT (dev->name); + + if (strcmp (dev_name,dev->name)) + continue; + + if (!probed_dev) /* user didn't call pcap_lookupdev() first */ + { + PCAP_ASSERT (dev->probe); + + if (!(*dev->probe)(dev)) /* call the xx_probe() function */ + { + sprintf (ebuf, "failed to detect device `%s'", dev_name); + return (NULL); + } + probed_dev = dev; /* device is probed okay and may be used */ + } + else if (dev != probed_dev) + { + goto not_probed; + } + + FLUSHK(); + + /* Select what traffic to receive + */ + if (promisc) + dev->flags |= (IFF_ALLMULTI | IFF_PROMISC); + else dev->flags &= ~(IFF_ALLMULTI | IFF_PROMISC); + + PCAP_ASSERT (dev->open); + + if (!(*dev->open)(dev)) + { + sprintf (ebuf, "failed to activate device `%s'", dev_name); + if (pktInfo.error && !strncmp(dev->name,"pkt",3)) + { + strcat (ebuf, ": "); + strcat (ebuf, pktInfo.error); + } + return (NULL); + } + + /* Some devices need this to operate in promiscous mode + */ + if (promisc && dev->set_multicast_list) + (*dev->set_multicast_list) (dev); + + active_dev = dev; /* remember our active device */ + break; + } + + /* 'dev_name' not matched in 'dev_base' list. + */ + if (!dev) + { + sprintf (ebuf, "device `%s' not supported", dev_name); + return (NULL); + } + +not_probed: + if (!probed_dev) + { + sprintf (ebuf, "device `%s' not probed", dev_name); + return (NULL); + } + return (dev); +} + +/* + * Deinitialise MAC driver. + * Set receive mode back to default mode. + */ +static void close_driver (void) +{ + /* !!todo: loop over all 'handle_to_device[]' ? */ + struct device *dev = active_dev; + + if (dev && dev->close) + { + (*dev->close) (dev); + FLUSHK(); + } + + active_dev = NULL; + +#ifdef USE_32BIT_DRIVERS + if (rx_pool) + { + k_free (rx_pool); + rx_pool = NULL; + } + if (dev) + pcibios_exit(); +#endif +} + + +#ifdef __DJGPP__ +static void setup_signals (void (*handler)(int)) +{ + signal (SIGSEGV,handler); + signal (SIGILL, handler); + signal (SIGFPE, handler); +} + +static void exc_handler (int sig) +{ +#ifdef USE_32BIT_DRIVERS + if (active_dev->irq > 0) /* excludes IRQ 0 */ + { + disable_irq (active_dev->irq); + irq_eoi_cmd (active_dev->irq); + _printk_safe = 1; + } +#endif + + switch (sig) + { + case SIGSEGV: + fputs ("Catching SIGSEGV.\n", stderr); + break; + case SIGILL: + fputs ("Catching SIGILL.\n", stderr); + break; + case SIGFPE: + _fpreset(); + fputs ("Catching SIGFPE.\n", stderr); + break; + default: + fprintf (stderr, "Catching signal %d.\n", sig); + } + exc_occured = 1; + pcap_cleanup_dos (NULL); +} +#endif /* __DJGPP__ */ + + +/* + * Open the pcap device for the first client calling pcap_activate() + */ +static int first_init (const char *name, char *ebuf, int promisc) +{ + struct device *dev; + +#ifdef USE_32BIT_DRIVERS + rx_pool = k_calloc (RECEIVE_BUF_SIZE, RECEIVE_QUEUE_SIZE); + if (!rx_pool) + { + strcpy (ebuf, "Not enough memory (Rx pool)"); + return (0); + } +#endif + +#ifdef __DJGPP__ + setup_signals (exc_handler); +#endif + +#ifdef USE_32BIT_DRIVERS + init_32bit(); +#endif + + dev = open_driver (name, ebuf, promisc); + if (!dev) + { +#ifdef USE_32BIT_DRIVERS + k_free (rx_pool); + rx_pool = NULL; +#endif + +#ifdef __DJGPP__ + setup_signals (SIG_DFL); +#endif + return (0); + } + +#ifdef USE_32BIT_DRIVERS + /* + * If driver is NOT a 16-bit "pkt/ndis" driver (having a 'copy_rx_buf' + * set in it's probe handler), initialise near-memory ring-buffer for + * the 32-bit device. + */ + if (dev->copy_rx_buf == NULL) + { + dev->get_rx_buf = get_rxbuf; + dev->peek_rx_buf = peek_rxbuf; + dev->release_rx_buf = release_rxbuf; + pktq_init (&dev->queue, RECEIVE_BUF_SIZE, RECEIVE_QUEUE_SIZE, rx_pool); + } +#endif + return (1); +} + +#ifdef USE_32BIT_DRIVERS +static void init_32bit (void) +{ + static int init_pci = 0; + + if (!_printk_file) + _printk_init (64*1024, NULL); /* calls atexit(printk_exit) */ + + if (!init_pci) + (void)pci_init(); /* init BIOS32+PCI interface */ + init_pci = 1; +} +#endif + + +/* + * Hook functions for using Watt-32 together with pcap + */ +static char rxbuf [ETH_MAX+100]; /* rx-buffer with some margin */ +static WORD etype; +static pcap_t pcap_save; + +static void watt32_recv_hook (u_char *dummy, const struct pcap_pkthdr *pcap, + const u_char *buf) +{ + /* Fix me: assumes Ethernet II only */ + struct ether_header *ep = (struct ether_header*) buf; + + memcpy (rxbuf, buf, pcap->caplen); + etype = ep->ether_type; + ARGSUSED (dummy); +} + +#if (WATTCP_VER >= 0x0224) +/* + * This function is used by Watt-32 to poll for a packet. + * i.e. it's set to bypass _eth_arrived() + */ +static void *pcap_recv_hook (WORD *type) +{ + int len = pcap_read_dos (&pcap_save, 1, watt32_recv_hook, NULL); + + if (len < 0) + return (NULL); + + *type = etype; + return (void*) &rxbuf; +} + +/* + * This function is called by Watt-32 (via _eth_xmit_hook). + * If dbug_init() was called, we should trace packets sent. + */ +static int pcap_xmit_hook (const void *buf, unsigned len) +{ + int rc = 0; + + if (pcap_pkt_debug > 0) + dbug_write ("pcap_xmit_hook: "); + + if (active_dev && active_dev->xmit) + if ((*active_dev->xmit) (active_dev, buf, len) > 0) + rc = len; + + if (pcap_pkt_debug > 0) + dbug_write (rc ? "ok\n" : "fail\n"); + return (rc); +} +#endif + +static int pcap_sendpacket_dos (pcap_t *p, const void *buf, size_t len) +{ + struct device *dev = p ? get_device(p->fd) : NULL; + + if (!dev || !dev->xmit) + return (-1); + return (*dev->xmit) (dev, buf, len); +} + +/* + * This function is called by Watt-32 in tcp_post_init(). + * We should prevent Watt-32 from using BOOTP/DHCP/RARP etc. + */ +static void (*prev_post_hook) (void); + +static void pcap_init_hook (void) +{ + _w32__bootp_on = _w32__dhcp_on = _w32__rarp_on = 0; + _w32__do_mask_req = 0; + _w32_dynamic_host = 0; + if (prev_post_hook) + (*prev_post_hook)(); +} + +/* + * Supress PRINT message from Watt-32's sock_init() + */ +static void null_print (void) {} + +/* + * To use features of Watt-32 (netdb functions and socket etc.) + * we must call sock_init(). But we set various hooks to prevent + * using normal PKTDRVR functions in pcpkt.c. This should hopefully + * make Watt-32 and pcap co-operate. + */ +static int init_watt32 (struct pcap *pcap, const char *dev_name, char *err_buf) +{ + char *env; + int rc, MTU, has_ip_addr; + int using_pktdrv = 1; + + /* If user called sock_init() first, we need to reinit in + * order to open debug/trace-file properly + */ + if (_watt_is_init) + sock_exit(); + + env = getenv ("PCAP_DEBUG"); + if (env && atoi(env) > 0 && + pcap_pkt_debug < 0) /* if not already set */ + { + dbug_init(); + pcap_pkt_debug = atoi (env); + } + + _watt_do_exit = 0; /* prevent sock_init() calling exit() */ + prev_post_hook = _w32_usr_post_init; + _w32_usr_post_init = pcap_init_hook; + _w32_print_hook = null_print; + + if (dev_name && strncmp(dev_name,"pkt",3)) + using_pktdrv = FALSE; + + rc = sock_init(); + has_ip_addr = (rc != 8); /* IP-address assignment failed */ + + /* if pcap is using a 32-bit driver w/o a pktdrvr loaded, we + * just pretend Watt-32 is initialised okay. + * + * !! fix-me: The Watt-32 config isn't done if no pktdrvr + * was found. In that case my_ip_addr + sin_mask + * have default values. Should be taken from another + * ini-file/environment in any case (ref. tcpdump.ini) + */ + _watt_is_init = 1; + + if (!using_pktdrv || !has_ip_addr) /* for now .... */ + { + static const char myip[] = "192.168.0.1"; + static const char mask[] = "255.255.255.0"; + + printf ("Just guessing, using IP %s and netmask %s\n", myip, mask); + my_ip_addr = aton (myip); + _w32_sin_mask = aton (mask); + } + else if (rc && using_pktdrv) + { + sprintf (err_buf, "sock_init() failed, code %d", rc); + return (0); + } + + /* Set recv-hook for peeking in _eth_arrived(). + */ +#if (WATTCP_VER >= 0x0224) + _eth_recv_hook = pcap_recv_hook; + _eth_xmit_hook = pcap_xmit_hook; +#endif + + /* Free the pkt-drvr handle allocated in pkt_init(). + * The above hooks should thus use the handle reopened in open_driver() + */ + if (using_pktdrv) + { + _eth_release(); +/* _eth_is_init = 1; */ /* hack to get Rx/Tx-hooks in Watt-32 working */ + } + + memcpy (&pcap_save, pcap, sizeof(pcap_save)); + MTU = pkt_get_mtu(); + pcap_save.fcode.bf_insns = NULL; + pcap_save.linktype = _eth_get_hwtype (NULL, NULL); + pcap_save.snapshot = MTU > 0 ? MTU : ETH_MAX; /* assume 1514 */ + +#if 1 + /* prevent use of resolve() and resolve_ip() + */ + last_nameserver = 0; +#endif + return (1); +} + +int EISA_bus = 0; /* Where is natural place for this? */ + +/* + * Application config hooks to set various driver parameters. + */ + +static const struct config_table debug_tab[] = { + { "PKT.DEBUG", ARG_ATOI, &pcap_pkt_debug }, + { "PKT.VECTOR", ARG_ATOX_W, NULL }, + { "NDIS.DEBUG", ARG_ATOI, NULL }, +#ifdef USE_32BIT_DRIVERS + { "3C503.DEBUG", ARG_ATOI, &ei_debug }, + { "3C503.IO_BASE", ARG_ATOX_W, &el2_dev.base_addr }, + { "3C503.MEMORY", ARG_ATOX_W, &el2_dev.mem_start }, + { "3C503.IRQ", ARG_ATOI, &el2_dev.irq }, + { "3C505.DEBUG", ARG_ATOI, NULL }, + { "3C505.BASE", ARG_ATOX_W, NULL }, + { "3C507.DEBUG", ARG_ATOI, NULL }, + { "3C509.DEBUG", ARG_ATOI, &el3_debug }, + { "3C509.ILOOP", ARG_ATOI, &el3_max_loop }, + { "3C529.DEBUG", ARG_ATOI, NULL }, + { "3C575.DEBUG", ARG_ATOI, &debug_3c575 }, + { "3C59X.DEBUG", ARG_ATOI, &vortex_debug }, + { "3C59X.IFACE0", ARG_ATOI, &vortex_options[0] }, + { "3C59X.IFACE1", ARG_ATOI, &vortex_options[1] }, + { "3C59X.IFACE2", ARG_ATOI, &vortex_options[2] }, + { "3C59X.IFACE3", ARG_ATOI, &vortex_options[3] }, + { "3C90X.DEBUG", ARG_ATOX_W, &tc90xbc_debug }, + { "ACCT.DEBUG", ARG_ATOI, ðpk_debug }, + { "CS89.DEBUG", ARG_ATOI, &cs89_debug }, + { "RTL8139.DEBUG", ARG_ATOI, &rtl8139_debug }, + /* { "RTL8139.FDUPLEX", ARG_ATOI, &rtl8139_options }, */ + { "SMC.DEBUG", ARG_ATOI, &ei_debug }, + /* { "E100.DEBUG", ARG_ATOI, &e100_debug }, */ + { "PCI.DEBUG", ARG_ATOI, &pci_debug }, + { "BIOS32.DEBUG", ARG_ATOI, &bios32_debug }, + { "IRQ.DEBUG", ARG_ATOI, &irq_debug }, + { "TIMER.IRQ", ARG_ATOI, &timer_irq }, +#endif + { NULL } + }; + +/* + * pcap_config_hook() is an extension to application's config + * handling. Uses Watt-32's config-table function. + */ +int pcap_config_hook (const char *name, const char *value) +{ + return parse_config_table (debug_tab, NULL, name, value); +} + +/* + * Linked list of supported devices + */ +struct device *active_dev = NULL; /* the device we have opened */ +struct device *probed_dev = NULL; /* the device we have probed */ +const struct device *dev_base = &pkt_dev; /* list of network devices */ + +/* + * PKTDRVR device functions + */ +int pcap_pkt_debug = -1; + +static void pkt_close (struct device *dev) +{ + BOOL okay = PktExitDriver(); + + if (pcap_pkt_debug > 1) + fprintf (stderr, "pkt_close(): %d\n", okay); + + if (dev->priv) + free (dev->priv); + dev->priv = NULL; +} + +static int pkt_open (struct device *dev) +{ + PKT_RX_MODE mode; + + if (dev->flags & IFF_PROMISC) + mode = PDRX_ALL_PACKETS; + else mode = PDRX_BROADCAST; + + if (!PktInitDriver(mode)) + return (0); + + PktResetStatistics (pktInfo.handle); + PktQueueBusy (FALSE); + return (1); +} + +static int pkt_xmit (struct device *dev, const void *buf, int len) +{ + struct net_device_stats *stats = (struct net_device_stats*) dev->priv; + + if (pcap_pkt_debug > 0) + dbug_write ("pcap_xmit\n"); + + if (!PktTransmit(buf,len)) + { + stats->tx_errors++; + return (0); + } + return (len); +} + +static void *pkt_stats (struct device *dev) +{ + struct net_device_stats *stats = (struct net_device_stats*) dev->priv; + + if (!stats || !PktSessStatistics(pktInfo.handle)) + return (NULL); + + stats->rx_packets = pktStat.inPackets; + stats->rx_errors = pktStat.lost; + stats->rx_missed_errors = PktRxDropped(); + return (stats); +} + +static int pkt_probe (struct device *dev) +{ + if (!PktSearchDriver()) + return (0); + + dev->open = pkt_open; + dev->xmit = pkt_xmit; + dev->close = pkt_close; + dev->get_stats = pkt_stats; + dev->copy_rx_buf = PktReceive; /* farmem peek and copy routine */ + dev->get_rx_buf = NULL; + dev->peek_rx_buf = NULL; + dev->release_rx_buf = NULL; + dev->priv = calloc (sizeof(struct net_device_stats), 1); + if (!dev->priv) + return (0); + return (1); +} + +/* + * NDIS device functions + */ +static void ndis_close (struct device *dev) +{ +#ifdef USE_NDIS2 + NdisShutdown(); +#endif + ARGSUSED (dev); +} + +static int ndis_open (struct device *dev) +{ + int promis = (dev->flags & IFF_PROMISC); + +#ifdef USE_NDIS2 + if (!NdisInit(promis)) + return (0); + return (1); +#else + ARGSUSED (promis); + return (0); +#endif +} + +static void *ndis_stats (struct device *dev) +{ + static struct net_device_stats stats; + + /* to-do */ + ARGSUSED (dev); + return (&stats); +} + +static int ndis_probe (struct device *dev) +{ +#ifdef USE_NDIS2 + if (!NdisOpen()) + return (0); +#endif + + dev->open = ndis_open; + dev->xmit = NULL; + dev->close = ndis_close; + dev->get_stats = ndis_stats; + dev->copy_rx_buf = NULL; /* to-do */ + dev->get_rx_buf = NULL; /* upcall is from rmode driver */ + dev->peek_rx_buf = NULL; + dev->release_rx_buf = NULL; + return (0); +} + +/* + * Search & probe for supported 32-bit (pmode) pcap devices + */ +#if defined(USE_32BIT_DRIVERS) + +struct device el2_dev LOCKED_VAR = { + "3c503", + "EtherLink II", + 0, + 0,0,0,0,0,0, + NULL, + el2_probe + }; + +struct device el3_dev LOCKED_VAR = { + "3c509", + "EtherLink III", + 0, + 0,0,0,0,0,0, + &el2_dev, + el3_probe + }; + +struct device tc515_dev LOCKED_VAR = { + "3c515", + "EtherLink PCI", + 0, + 0,0,0,0,0,0, + &el3_dev, + tc515_probe + }; + +struct device tc59_dev LOCKED_VAR = { + "3c59x", + "EtherLink PCI", + 0, + 0,0,0,0,0,0, + &tc515_dev, + tc59x_probe + }; + +struct device tc90xbc_dev LOCKED_VAR = { + "3c90x", + "EtherLink 90X", + 0, + 0,0,0,0,0,0, + &tc59_dev, + tc90xbc_probe + }; + +struct device wd_dev LOCKED_VAR = { + "wd", + "Westen Digital", + 0, + 0,0,0,0,0,0, + &tc90xbc_dev, + wd_probe + }; + +struct device ne_dev LOCKED_VAR = { + "ne", + "NEx000", + 0, + 0,0,0,0,0,0, + &wd_dev, + ne_probe + }; + +struct device acct_dev LOCKED_VAR = { + "acct", + "Accton EtherPocket", + 0, + 0,0,0,0,0,0, + &ne_dev, + ethpk_probe + }; + +struct device cs89_dev LOCKED_VAR = { + "cs89", + "Crystal Semiconductor", + 0, + 0,0,0,0,0,0, + &acct_dev, + cs89x0_probe + }; + +struct device rtl8139_dev LOCKED_VAR = { + "rtl8139", + "RealTek PCI", + 0, + 0,0,0,0,0,0, + &cs89_dev, + rtl8139_probe /* dev->probe routine */ + }; + +/* + * Dequeue routine is called by polling. + * NOTE: the queue-element is not copied, only a pointer is + * returned at '*buf' + */ +int peek_rxbuf (BYTE **buf) +{ + struct rx_elem *tail, *head; + + PCAP_ASSERT (pktq_check (&active_dev->queue)); + + DISABLE(); + tail = pktq_out_elem (&active_dev->queue); + head = pktq_in_elem (&active_dev->queue); + ENABLE(); + + if (head != tail) + { + PCAP_ASSERT (tail->size < active_dev->queue.elem_size-4-2); + + *buf = &tail->data[0]; + return (tail->size); + } + *buf = NULL; + return (0); +} + +/* + * Release buffer we peeked at above. + */ +int release_rxbuf (BYTE *buf) +{ +#ifndef NDEBUG + struct rx_elem *tail = pktq_out_elem (&active_dev->queue); + + PCAP_ASSERT (&tail->data[0] == buf); +#else + ARGSUSED (buf); +#endif + pktq_inc_out (&active_dev->queue); + return (1); +} + +/* + * get_rxbuf() routine (in locked code) is called from IRQ handler + * to request a buffer. Interrupts are disabled and we have a 32kB stack. + */ +BYTE *get_rxbuf (int len) +{ + int idx; + + if (len < ETH_MIN || len > ETH_MAX) + return (NULL); + + idx = pktq_in_index (&active_dev->queue); + +#ifdef DEBUG + { + static int fan_idx LOCKED_VAR = 0; + writew ("-\\|/"[fan_idx++] | (15 << 8), /* white on black colour */ + 0xB8000 + 2*79); /* upper-right corner, 80-col colour screen */ + fan_idx &= 3; + } +/* writew (idx + '0' + 0x0F00, 0xB8000 + 2*78); */ +#endif + + if (idx != active_dev->queue.out_index) + { + struct rx_elem *head = pktq_in_elem (&active_dev->queue); + + head->size = len; + active_dev->queue.in_index = idx; + return (&head->data[0]); + } + + /* !!to-do: drop 25% of the oldest element + */ + pktq_clear (&active_dev->queue); + return (NULL); +} + +/* + * Simple ring-buffer queue handler for reception of packets + * from network driver. + */ +#define PKTQ_MARKER 0xDEADBEEF + +static int pktq_check (struct rx_ringbuf *q) +{ +#ifndef NDEBUG + int i; + char *buf; +#endif + + if (!q || !q->num_elem || !q->buf_start) + return (0); + +#ifndef NDEBUG + buf = q->buf_start; + + for (i = 0; i < q->num_elem; i++) + { + buf += q->elem_size; + if (*(DWORD*)(buf - sizeof(DWORD)) != PKTQ_MARKER) + return (0); + } +#endif + return (1); +} + +static int pktq_init (struct rx_ringbuf *q, int size, int num, char *pool) +{ + int i; + + q->elem_size = size; + q->num_elem = num; + q->buf_start = pool; + q->in_index = 0; + q->out_index = 0; + + PCAP_ASSERT (size >= sizeof(struct rx_elem) + sizeof(DWORD)); + PCAP_ASSERT (num); + PCAP_ASSERT (pool); + + for (i = 0; i < num; i++) + { +#if 0 + struct rx_elem *elem = (struct rx_elem*) pool; + + /* assert dword aligned elements + */ + PCAP_ASSERT (((unsigned)(&elem->data[0]) & 3) == 0); +#endif + pool += size; + *(DWORD*) (pool - sizeof(DWORD)) = PKTQ_MARKER; + } + return (1); +} + +/* + * Increment the queue 'out_index' (tail). + * Check for wraps. + */ +static int pktq_inc_out (struct rx_ringbuf *q) +{ + q->out_index++; + if (q->out_index >= q->num_elem) + q->out_index = 0; + return (q->out_index); +} + +/* + * Return the queue's next 'in_index' (head). + * Check for wraps. + */ +static int pktq_in_index (struct rx_ringbuf *q) +{ + volatile int index = q->in_index + 1; + + if (index >= q->num_elem) + index = 0; + return (index); +} + +/* + * Return the queue's head-buffer. + */ +static struct rx_elem *pktq_in_elem (struct rx_ringbuf *q) +{ + return (struct rx_elem*) (q->buf_start + (q->elem_size * q->in_index)); +} + +/* + * Return the queue's tail-buffer. + */ +static struct rx_elem *pktq_out_elem (struct rx_ringbuf *q) +{ + return (struct rx_elem*) (q->buf_start + (q->elem_size * q->out_index)); +} + +/* + * Clear the queue ring-buffer by setting head=tail. + */ +static void pktq_clear (struct rx_ringbuf *q) +{ + q->in_index = q->out_index; +} + +/* + * Symbols that must be linkable for "gcc -O0" + */ +#undef __IOPORT_H +#undef __DMA_H + +#define extern +#define __inline__ + +#include "msdos/pm_drvr/ioport.h" +#include "msdos/pm_drvr/dma.h" + +#endif /* USE_32BIT_DRIVERS */ + diff --git a/pcap-dos.h b/pcap-dos.h new file mode 100644 index 0000000..f474437 --- /dev/null +++ b/pcap-dos.h @@ -0,0 +1,227 @@ +/* + * Internal details for libpcap on DOS. + * 32-bit targets: djgpp, Pharlap or DOS4GW. + * + * @(#) $Header: /tcpdump/master/libpcap/pcap-dos.h,v 1.1 2004-12-18 08:52:10 guy Exp $ (LBL) + */ + +#ifndef __PCAP_DOS_H +#define __PCAP_DOS_H + +#ifdef __DJGPP__ +#include /* simple non-conio kbhit */ +#else +#include +#endif + +typedef int BOOL; +typedef unsigned char BYTE; +typedef unsigned short WORD; +typedef unsigned long DWORD; +typedef BYTE ETHER[6]; + +#define ETH_ALEN sizeof(ETHER) /* Ether address length */ +#define ETH_HLEN (2*ETH_ALEN+2) /* Ether header length */ +#define ETH_MTU 1500 +#define ETH_MIN 60 +#define ETH_MAX (ETH_MTU+ETH_HLEN) + +#ifndef TRUE + #define TRUE 1 + #define FALSE 0 +#endif + +#define PHARLAP 1 +#define DJGPP 2 +#define DOS4GW 4 + +#ifdef __DJGPP__ + #undef DOSX + #define DOSX DJGPP +#endif + +#ifdef __WATCOMC__ + #undef DOSX + #define DOSX DOS4GW +#endif + +#ifdef __HIGHC__ + #include + #undef DOSX + #define DOSX PHARLAP + #define inline +#else + typedef unsigned int UINT; +#endif + + +#if defined(__GNUC__) || defined(__HIGHC__) + typedef unsigned long long uint64; + typedef unsigned long long QWORD; +#endif + +#if defined(__WATCOMC__) + typedef unsigned __int64 uint64; + typedef unsigned __int64 QWORD; +#endif + +#define ARGSUSED(x) (void) x + +#if defined (__SMALL__) || defined(__LARGE__) + #define DOSX 0 + +#elif !defined(DOSX) + #error DOSX not defined; 1 = PharLap, 2 = djgpp, 4 = DOS4GW +#endif + +#ifdef __HIGHC__ +#define min(a,b) _min(a,b) +#define max(a,b) _max(a,b) +#endif + +#ifndef min +#define min(a,b) ((a) < (b) ? (a) : (b)) +#endif + +#ifndef max +#define max(a,b) ((a) < (b) ? (b) : (a)) +#endif + +#if !defined(_U_) && defined(__GNUC__) +#define _U_ __attribute__((unused)) +#endif + +#ifndef _U_ +#define _U_ +#endif + +#if defined(USE_32BIT_DRIVERS) + #include "msdos/pm_drvr/lock.h" + + #ifndef RECEIVE_QUEUE_SIZE + #define RECEIVE_QUEUE_SIZE 60 + #endif + + #ifndef RECEIVE_BUF_SIZE + #define RECEIVE_BUF_SIZE (ETH_MAX+20) + #endif + + extern struct device el2_dev LOCKED_VAR; /* 3Com EtherLink II */ + extern struct device el3_dev LOCKED_VAR; /* EtherLink III */ + extern struct device tc59_dev LOCKED_VAR; /* 3Com Vortex Card (?) */ + extern struct device tc515_dev LOCKED_VAR; + extern struct device tc90x_dev LOCKED_VAR; + extern struct device tc90bcx_dev LOCKED_VAR; + extern struct device wd_dev LOCKED_VAR; + extern struct device ne_dev LOCKED_VAR; + extern struct device acct_dev LOCKED_VAR; + extern struct device cs89_dev LOCKED_VAR; + extern struct device rtl8139_dev LOCKED_VAR; + + struct rx_ringbuf { + volatile int in_index; /* queue index head */ + int out_index; /* queue index tail */ + int elem_size; /* size of each element */ + int num_elem; /* number of elements */ + char *buf_start; /* start of buffer pool */ + }; + + struct rx_elem { + DWORD size; /* size copied to this element */ + BYTE data[ETH_MAX+10]; /* add some margin. data[0] should be */ + }; /* dword aligned */ + + extern BYTE *get_rxbuf (int len) LOCKED_FUNC; + extern int peek_rxbuf (BYTE **buf); + extern int release_rxbuf (BYTE *buf); + +#else + #define LOCKED_VAR + #define LOCKED_FUNC + + struct device { + const char *name; + const char *long_name; + DWORD base_addr; /* device I/O address */ + int irq; /* device IRQ number */ + int dma; /* DMA channel */ + DWORD mem_start; /* shared mem start */ + DWORD mem_end; /* shared mem end */ + DWORD rmem_start; /* shmem "recv" start */ + DWORD rmem_end; /* shared "recv" end */ + + struct device *next; /* next device in list */ + + /* interface service routines */ + int (*probe)(struct device *dev); + int (*open) (struct device *dev); + void (*close)(struct device *dev); + int (*xmit) (struct device *dev, const void *buf, int len); + void *(*get_stats)(struct device *dev); + void (*set_multicast_list)(struct device *dev); + + /* driver-to-pcap receive buffer routines */ + int (*copy_rx_buf) (BYTE *buf, int max); /* rx-copy (pktdrvr only) */ + BYTE *(*get_rx_buf) (int len); /* rx-buf fetch/enqueue */ + int (*peek_rx_buf) (BYTE **buf); /* rx-non-copy at queue */ + int (*release_rx_buf) (BYTE *buf); /* release after peek */ + + WORD flags; /* Low-level status flags. */ + void *priv; /* private data */ + }; + + /* + * Network device statistics + */ + typedef struct net_device_stats { + DWORD rx_packets; /* total packets received */ + DWORD tx_packets; /* total packets transmitted */ + DWORD rx_bytes; /* total bytes received */ + DWORD tx_bytes; /* total bytes transmitted */ + DWORD rx_errors; /* bad packets received */ + DWORD tx_errors; /* packet transmit problems */ + DWORD rx_dropped; /* no space in Rx buffers */ + DWORD tx_dropped; /* no space available for Tx */ + DWORD multicast; /* multicast packets received */ + + /* detailed rx_errors: */ + DWORD rx_length_errors; + DWORD rx_over_errors; /* recv'r overrun error */ + DWORD rx_osize_errors; /* recv'r over-size error */ + DWORD rx_crc_errors; /* recv'd pkt with crc error */ + DWORD rx_frame_errors; /* recv'd frame alignment error */ + DWORD rx_fifo_errors; /* recv'r fifo overrun */ + DWORD rx_missed_errors; /* recv'r missed packet */ + + /* detailed tx_errors */ + DWORD tx_aborted_errors; + DWORD tx_carrier_errors; + DWORD tx_fifo_errors; + DWORD tx_heartbeat_errors; + DWORD tx_window_errors; + DWORD tx_collisions; + DWORD tx_jabbers; + } NET_STATS; +#endif + +extern struct device *active_dev LOCKED_VAR; +extern const struct device *dev_base LOCKED_VAR; +extern struct device *probed_dev; + +extern int pcap_pkt_debug; + +extern void _w32_os_yield (void); /* Watt-32's misc.c */ + +#ifdef NDEBUG + #define PCAP_ASSERT(x) ((void)0) + +#else + void pcap_assert (const char *what, const char *file, unsigned line); + + #define PCAP_ASSERT(x) do { \ + if (!(x)) \ + pcap_assert (#x, __FILE__, __LINE__); \ + } while (0) +#endif + +#endif /* __PCAP_DOS_H */ diff --git a/pcap-enet.c b/pcap-enet.c new file mode 100644 index 0000000..5ad921c --- /dev/null +++ b/pcap-enet.c @@ -0,0 +1,235 @@ +/* + * Stanford Enetfilter subroutines for tcpdump + * + * Based on the MERIT NNstat etherifrt.c and the Ultrix pcap-pf.c + * subroutines. + * + * Rayan Zachariassen, CA*Net + */ +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-enet.c,v 1.9 2006-10-04 18:09:22 guy Exp $"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +#include +#include + +#include "interface.h" + +struct packet_header { +#ifdef IBMRTPC + struct LengthWords length; + struct tap_header tap; +#endif /* IBMRTPC */ + u_char packet[8] +}; + +extern int errno; + +#define BUFSPACE (4*1024) + +/* Forwards */ +static void efReadError(int, char *); + +void +readloop(int cnt, int if_fd, struct bpf_program *fp, printfunc printit) +{ +#ifdef IBMRTPC + register struct packet_header *ph; + register u_char *bp; + register int inc; +#else /* !IBMRTPC */ + static struct timeval tv = { 0 }; +#endif /* IBMRTPC */ + register int cc, caplen; + register struct bpf_insn *fcode = fp->bf_insns; + union { + struct packet_header hdr; + u_char p[BUFSPACE]; + u_short s; + } buf; + + while (1) { + if ((cc = read(if_fd, (char *)buf.p, sizeof(buf))) < 0) + efReadError(if_fd, "reader"); + +#ifdef IBMRTPC + /* + * Loop through each packet. + */ + bp = buf.p; + while (cc > 0) { + ph = (struct packet_header *)bp; + caplen = ph->tap.th_wirelen > snaplen ? snaplen : ph->tap +.th_wirelen ; + if (bpf_filter(fcode, (char *)ph->packet, + ph->tap.th_wirelen, caplen)) { + if (cnt >= 0 && --cnt < 0) + goto out; + (*printit)((char *)ph->packet, + (struct timeval *)ph->tap.th_timestamp, + ph->tap.th_wirelen, caplen); + } + inc = ph->length.PacketOffset; + cc -= inc; + bp += inc; + } +#else /* !IBMRTPC */ + caplen = cc > snaplen ? snaplen : cc ; + if (bpf_filter(fcode, buf.hdr.packet, cc, caplen)) { + if (cnt >= 0 && --cnt < 0) + goto out; + (*printit)(buf.hdr.packet, &tv, cc, caplen); + } +#endif /* IBMRTPC */ + } + out: + wrapup(if_fd); +} + +/* Call ONLY if read() has returned an error on packet filter */ +static void +efReadError(int fid, char *msg) +{ + if (errno == EINVAL) { /* read MAXINT bytes already! */ + if (lseek(fid, 0, 0) < 0) { + perror("tcpdump: efReadError/lseek"); + exit(-1); + } + else + return; + } + else { + (void) fprintf(stderr, "tcpdump: "); + perror(msg); + exit(-1); + } +} + +void +wrapup(int fd) +{ +#ifdef IBMRTPC + struct enstats es; + + if (ioctl(fd, EIOSTATS, &es) == -1) { + perror("tcpdump: enet ioctl EIOSTATS error"); + exit(-1); + } + + fprintf(stderr, "%d packets queued", es.enStat_Rcnt); + if (es.enStat_Rdrops > 0) + fprintf(stderr, ", %d dropped", es.enStat_Rdrops); + if (es.enStat_Reads > 0) + fprintf(stderr, ", %d tcpdump %s", es.enStat_Reads, + es.enStat_Reads > 1 ? "reads" : "read"); + if (es.enStat_MaxRead > 1) + fprintf(stderr, ", %d packets in largest read", + es.enStat_MaxRead); + putc('\n', stderr); +#endif /* IBMRTPC */ + close(fd); +} + +int +initdevice(char *device, int pflag, int *linktype) +{ + struct eniocb ctl; + struct enfilter filter; + u_int maxwaiting; + int if_fd; + +#ifdef IBMRTPC + GETENETDEVICE(0, O_RDONLY, &if_fd); +#else /* !IBMRTPC */ + if_fd = open("/dev/enet", O_RDONLY, 0); +#endif /* IBMRTPC */ + + if (if_fd == -1) { + perror("tcpdump: enet open error"); + error( +"your system may not be properly configured; see \"man enet(4)\""); + exit(-1); + } + + /* Get operating parameters. */ + + if (ioctl(if_fd, EIOCGETP, (char *)&ctl) == -1) { + perror("tcpdump: enet ioctl EIOCGETP error"); + exit(-1); + } + + /* Set operating parameters. */ + +#ifdef IBMRTPC + ctl.en_rtout = 1 * ctl.en_hz; + ctl.en_tr_etherhead = 1; + ctl.en_tap_network = 1; + ctl.en_multi_packet = 1; + ctl.en_maxlen = BUFSPACE; +#else /* !IBMRTPC */ + ctl.en_rtout = 64; /* randomly picked value for HZ */ +#endif /* IBMRTPC */ + if (ioctl(if_fd, EIOCSETP, &ctl) == -1) { + perror("tcpdump: enet ioctl EIOCSETP error"); + exit(-1); + } + + /* Flush the receive queue, since we've changed + the operating parameters and we otherwise might + receive data without headers. */ + + if (ioctl(if_fd, EIOCFLUSH) == -1) { + perror("tcpdump: enet ioctl EIOCFLUSH error"); + exit(-1); + } + + /* Set the receive queue depth to its maximum. */ + + maxwaiting = ctl.en_maxwaiting; + if (ioctl(if_fd, EIOCSETW, &maxwaiting) == -1) { + perror("tcpdump: enet ioctl EIOCSETW error"); + exit(-1); + } + +#ifdef IBMRTPC + /* Clear statistics. */ + + if (ioctl(if_fd, EIOCLRSTAT, 0) == -1) { + perror("tcpdump: enet ioctl EIOCLRSTAT error"); + exit(-1); + } +#endif /* IBMRTPC */ + + /* Set the filter (accept all packets). */ + + filter.enf_Priority = 3; + filter.enf_FilterLen = 0; + if (ioctl(if_fd, EIOCSETF, &filter) == -1) { + perror("tcpdump: enet ioctl EIOCSETF error"); + exit(-1); + } + /* + * "enetfilter" supports only ethernets. + */ + *linktype = DLT_EN10MB; + + return(if_fd); +} diff --git a/pcap-filter.manmisc.in b/pcap-filter.manmisc.in new file mode 100644 index 0000000..d7b4b0a --- /dev/null +++ b/pcap-filter.manmisc.in @@ -0,0 +1,962 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap-filter.manmisc.in,v 1.1 2008-10-21 07:33:01 guy Exp $ (LBL) +.\" +.\" Copyright (c) 1987, 1988, 1989, 1990, 1991, 1992, 1994, 1995, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP-FILTER @MAN_MISC_INFO@ "6 January 2008" +.SH NAME +pcap-filter \- packet filter syntax +.br +.ad +.SH DESCRIPTION +.LP +.B pcap_compile() +is used to compile a string into a filter program. +The resulting filter program can then be applied to +some stream of packets to determine which packets will be supplied to +.BR pcap_loop() , +.BR pcap_dispatch() , +.BR pcap_next() , +or +.BR pcap_next_ex() . +.LP +The \fIfilter expression\fP consists of one or more +.IR primitives . +Primitives usually consist of an +.I id +(name or number) preceded by one or more qualifiers. +There are three +different kinds of qualifier: +.IP \fItype\fP +qualifiers say what kind of thing the id name or number refers to. +Possible types are +.BR host , +.B net , +.B port +and +.BR portrange . +E.g., `host foo', `net 128.3', `port 20', `portrange 6000-6008'. +If there is no type +qualifier, +.B host +is assumed. +.IP \fIdir\fP +qualifiers specify a particular transfer direction to and/or from +.IR id . +Possible directions are +.BR src , +.BR dst , +.BR "src or dst" , +.BR "src and dst" , +.BR ra , +.BR ta , +.BR addr1 , +.BR addr2 , +.BR addr3 , +and +.BR addr4 . +E.g., `src foo', `dst net 128.3', `src or dst port ftp-data'. +If +there is no dir qualifier, +.B "src or dst" +is assumed. +The +.BR ra , +.BR ta , +.BR addr1 , +.BR addr2 , +.BR addr3 , +and +.B addr4 +qualifiers are only valid for IEEE 802.11 Wireless LAN link layers. +For some link layers, such as SLIP and the ``cooked'' Linux capture mode +used for the ``any'' device and for some other device types, the +.B inbound +and +.B outbound +qualifiers can be used to specify a desired direction. +.IP \fIproto\fP +qualifiers restrict the match to a particular protocol. +Possible +protos are: +.BR ether , +.BR fddi , +.BR tr , +.BR wlan , +.BR ip , +.BR ip6 , +.BR arp , +.BR rarp , +.BR decnet , +.B tcp +and +.BR udp . +E.g., `ether src foo', `arp net 128.3', `tcp port 21', `udp portrange +7000-7009', `wlan addr2 0:2:3:4:5:6'. +If there is +no proto qualifier, all protocols consistent with the type are +assumed. +E.g., `src foo' means `(ip or arp or rarp) src foo' +(except the latter is not legal syntax), `net bar' means `(ip or +arp or rarp) net bar' and `port 53' means `(tcp or udp) port 53'. +.LP +[`fddi' is actually an alias for `ether'; the parser treats them +identically as meaning ``the data link level used on the specified +network interface.'' FDDI headers contain Ethernet-like source +and destination addresses, and often contain Ethernet-like packet +types, so you can filter on these FDDI fields just as with the +analogous Ethernet fields. +FDDI headers also contain other fields, +but you cannot name them explicitly in a filter expression. +.LP +Similarly, `tr' and `wlan' are aliases for `ether'; the previous +paragraph's statements about FDDI headers also apply to Token Ring +and 802.11 wireless LAN headers. For 802.11 headers, the destination +address is the DA field and the source address is the SA field; the +BSSID, RA, and TA fields aren't tested.] +.LP +In addition to the above, there are some special `primitive' keywords +that don't follow the pattern: +.BR gateway , +.BR broadcast , +.BR less , +.B greater +and arithmetic expressions. +All of these are described below. +.LP +More complex filter expressions are built up by using the words +.BR and , +.B or +and +.B not +to combine primitives. +E.g., `host foo and not port ftp and not port ftp-data'. +To save typing, identical qualifier lists can be omitted. +E.g., +`tcp dst port ftp or ftp-data or domain' is exactly the same as +`tcp dst port ftp or tcp dst port ftp-data or tcp dst port domain'. +.LP +Allowable primitives are: +.IP "\fBdst host \fIhost\fR" +True if the IPv4/v6 destination field of the packet is \fIhost\fP, +which may be either an address or a name. +.IP "\fBsrc host \fIhost\fR" +True if the IPv4/v6 source field of the packet is \fIhost\fP. +.IP "\fBhost \fIhost\fP +True if either the IPv4/v6 source or destination of the packet is \fIhost\fP. +.IP +Any of the above host expressions can be prepended with the keywords, +\fBip\fP, \fBarp\fP, \fBrarp\fP, or \fBip6\fP as in: +.in +.5i +.nf +\fBip host \fIhost\fR +.fi +.in -.5i +which is equivalent to: +.in +.5i +.nf +\fBether proto \fI\\ip\fB and host \fIhost\fR +.fi +.in -.5i +If \fIhost\fR is a name with multiple IP addresses, each address will +be checked for a match. +.IP "\fBether dst \fIehost\fP +True if the Ethernet destination address is \fIehost\fP. +\fIEhost\fP +may be either a name from /etc/ethers or a number (see +.IR ethers (3N) +for numeric format). +.IP "\fBether src \fIehost\fP +True if the Ethernet source address is \fIehost\fP. +.IP "\fBether host \fIehost\fP +True if either the Ethernet source or destination address is \fIehost\fP. +.IP "\fBgateway\fP \fIhost\fP +True if the packet used \fIhost\fP as a gateway. +I.e., the Ethernet +source or destination address was \fIhost\fP but neither the IP source +nor the IP destination was \fIhost\fP. +\fIHost\fP must be a name and +must be found both by the machine's host-name-to-IP-address resolution +mechanisms (host name file, DNS, NIS, etc.) and by the machine's +host-name-to-Ethernet-address resolution mechanism (/etc/ethers, etc.). +(An equivalent expression is +.in +.5i +.nf +\fBether host \fIehost \fBand not host \fIhost\fR +.fi +.in -.5i +which can be used with either names or numbers for \fIhost / ehost\fP.) +This syntax does not work in IPv6-enabled configuration at this moment. +.IP "\fBdst net \fInet\fR" +True if the IPv4/v6 destination address of the packet has a network +number of \fInet\fP. +\fINet\fP may be either a name from the networks database +(/etc/networks, etc.) or a network number. +An IPv4 network number can be written as a dotted quad (e.g., 192.168.1.0), +dotted triple (e.g., 192.168.1), dotted pair (e.g, 172.16), or single +number (e.g., 10); the netmask is 255.255.255.255 for a dotted quad +(which means that it's really a host match), 255.255.255.0 for a dotted +triple, 255.255.0.0 for a dotted pair, or 255.0.0.0 for a single number. +An IPv6 network number must be written out fully; the netmask is +ff:ff:ff:ff:ff:ff:ff:ff, so IPv6 "network" matches are really always +host matches, and a network match requires a netmask length. +.IP "\fBsrc net \fInet\fR" +True if the IPv4/v6 source address of the packet has a network +number of \fInet\fP. +.IP "\fBnet \fInet\fR" +True if either the IPv4/v6 source or destination address of the packet has a network +number of \fInet\fP. +.IP "\fBnet \fInet\fR \fBmask \fInetmask\fR" +True if the IPv4 address matches \fInet\fR with the specific \fInetmask\fR. +May be qualified with \fBsrc\fR or \fBdst\fR. +Note that this syntax is not valid for IPv6 \fInet\fR. +.IP "\fBnet \fInet\fR/\fIlen\fR" +True if the IPv4/v6 address matches \fInet\fR with a netmask \fIlen\fR +bits wide. +May be qualified with \fBsrc\fR or \fBdst\fR. +.IP "\fBdst port \fIport\fR" +True if the packet is ip/tcp, ip/udp, ip6/tcp or ip6/udp and has a +destination port value of \fIport\fP. +The \fIport\fP can be a number or a name used in /etc/services (see +.IR tcp (4P) +and +.IR udp (4P)). +If a name is used, both the port +number and protocol are checked. +If a number or ambiguous name is used, +only the port number is checked (e.g., \fBdst port 513\fR will print both +tcp/login traffic and udp/who traffic, and \fBport domain\fR will print +both tcp/domain and udp/domain traffic). +.IP "\fBsrc port \fIport\fR" +True if the packet has a source port value of \fIport\fP. +.IP "\fBport \fIport\fR" +True if either the source or destination port of the packet is \fIport\fP. +.IP "\fBdst portrange \fIport1\fB-\fIport2\fR" +True if the packet is ip/tcp, ip/udp, ip6/tcp or ip6/udp and has a +destination port value between \fIport1\fP and \fIport2\fP. +.I port1 +and +.I port2 +are interpreted in the same fashion as the +.I port +parameter for +.BR port . +.IP "\fBsrc portrange \fIport1\fB-\fIport2\fR" +True if the packet has a source port value between \fIport1\fP and +\fIport2\fP. +.IP "\fBportrange \fIport1\fB-\fIport2\fR" +True if either the source or destination port of the packet is between +\fIport1\fP and \fIport2\fP. +.IP +Any of the above port or port range expressions can be prepended with +the keywords, \fBtcp\fP or \fBudp\fP, as in: +.in +.5i +.nf +\fBtcp src port \fIport\fR +.fi +.in -.5i +which matches only tcp packets whose source port is \fIport\fP. +.IP "\fBless \fIlength\fR" +True if the packet has a length less than or equal to \fIlength\fP. +This is equivalent to: +.in +.5i +.nf +\fBlen <= \fIlength\fP. +.fi +.in -.5i +.IP "\fBgreater \fIlength\fR" +True if the packet has a length greater than or equal to \fIlength\fP. +This is equivalent to: +.in +.5i +.nf +\fBlen >= \fIlength\fP. +.fi +.in -.5i +.IP "\fBip proto \fIprotocol\fR" +True if the packet is an IPv4 packet (see +.IR ip (4P)) +of protocol type \fIprotocol\fP. +\fIProtocol\fP can be a number or one of the names +\fBicmp\fP, \fBicmp6\fP, \fBigmp\fP, \fBigrp\fP, \fBpim\fP, \fBah\fP, +\fBesp\fP, \fBvrrp\fP, \fBudp\fP, or \fBtcp\fP. +Note that the identifiers \fBtcp\fP, \fBudp\fP, and \fBicmp\fP are also +keywords and must be escaped via backslash (\\), which is \\\\ in the C-shell. +Note that this primitive does not chase the protocol header chain. +.IP "\fBip6 proto \fIprotocol\fR" +True if the packet is an IPv6 packet of protocol type \fIprotocol\fP. +Note that this primitive does not chase the protocol header chain. +.IP "\fBip6 protochain \fIprotocol\fR" +True if the packet is IPv6 packet, +and contains protocol header with type \fIprotocol\fR +in its protocol header chain. +For example, +.in +.5i +.nf +\fBip6 protochain 6\fR +.fi +.in -.5i +matches any IPv6 packet with TCP protocol header in the protocol header chain. +The packet may contain, for example, +authentication header, routing header, or hop-by-hop option header, +between IPv6 header and TCP header. +The BPF code emitted by this primitive is complex and +cannot be optimized by the BPF optimizer code, so this can be somewhat +slow. +.IP "\fBip protochain \fIprotocol\fR" +Equivalent to \fBip6 protochain \fIprotocol\fR, but this is for IPv4. +.IP "\fBether broadcast\fR" +True if the packet is an Ethernet broadcast packet. +The \fIether\fP +keyword is optional. +.IP "\fBip broadcast\fR" +True if the packet is an IPv4 broadcast packet. +It checks for both the all-zeroes and all-ones broadcast conventions, +and looks up the subnet mask on the interface on which the capture is +being done. +.IP +If the subnet mask of the interface on which the capture is being done +is not available, either because the interface on which capture is being +done has no netmask or because the capture is being done on the Linux +"any" interface, which can capture on more than one interface, this +check will not work correctly. +.IP "\fBether multicast\fR" +True if the packet is an Ethernet multicast packet. +The \fBether\fP +keyword is optional. +This is shorthand for `\fBether[0] & 1 != 0\fP'. +.IP "\fBip multicast\fR" +True if the packet is an IPv4 multicast packet. +.IP "\fBip6 multicast\fR" +True if the packet is an IPv6 multicast packet. +.IP "\fBether proto \fIprotocol\fR" +True if the packet is of ether type \fIprotocol\fR. +\fIProtocol\fP can be a number or one of the names +\fBip\fP, \fBip6\fP, \fBarp\fP, \fBrarp\fP, \fBatalk\fP, \fBaarp\fP, +\fBdecnet\fP, \fBsca\fP, \fBlat\fP, \fBmopdl\fP, \fBmoprc\fP, +\fBiso\fP, \fBstp\fP, \fBipx\fP, or \fBnetbeui\fP. +Note these identifiers are also keywords +and must be escaped via backslash (\\). +.IP +[In the case of FDDI (e.g., `\fBfddi protocol arp\fR'), Token Ring +(e.g., `\fBtr protocol arp\fR'), and IEEE 802.11 wireless LANS (e.g., +`\fBwlan protocol arp\fR'), for most of those protocols, the +protocol identification comes from the 802.2 Logical Link Control (LLC) +header, which is usually layered on top of the FDDI, Token Ring, or +802.11 header. +.IP +When filtering for most protocol identifiers on FDDI, Token Ring, or +802.11, the filter checks only the protocol ID field of an LLC header +in so-called SNAP format with an Organizational Unit Identifier (OUI) of +0x000000, for encapsulated Ethernet; it doesn't check whether the packet +is in SNAP format with an OUI of 0x000000. +The exceptions are: +.RS +.TP +\fBiso\fP +the filter checks the DSAP (Destination Service Access Point) and +SSAP (Source Service Access Point) fields of the LLC header; +.TP +\fBstp\fP and \fBnetbeui\fP +the filter checks the DSAP of the LLC header; +.TP +\fBatalk\fP +the filter checks for a SNAP-format packet with an OUI of 0x080007 +and the AppleTalk etype. +.RE +.IP +In the case of Ethernet, the filter checks the Ethernet type field +for most of those protocols. The exceptions are: +.RS +.TP +\fBiso\fP, \fBstp\fP, and \fBnetbeui\fP +the filter checks for an 802.3 frame and then checks the LLC header as +it does for FDDI, Token Ring, and 802.11; +.TP +\fBatalk\fP +the filter checks both for the AppleTalk etype in an Ethernet frame and +for a SNAP-format packet as it does for FDDI, Token Ring, and 802.11; +.TP +\fBaarp\fP +the filter checks for the AppleTalk ARP etype in either an Ethernet +frame or an 802.2 SNAP frame with an OUI of 0x000000; +.TP +\fBipx\fP +the filter checks for the IPX etype in an Ethernet frame, the IPX +DSAP in the LLC header, the 802.3-with-no-LLC-header encapsulation of +IPX, and the IPX etype in a SNAP frame. +.RE +.IP "\fBdecnet src \fIhost\fR" +True if the DECNET source address is +.IR host , +which may be an address of the form ``10.123'', or a DECNET host +name. +[DECNET host name support is only available on ULTRIX systems +that are configured to run DECNET.] +.IP "\fBdecnet dst \fIhost\fR" +True if the DECNET destination address is +.IR host . +.IP "\fBdecnet host \fIhost\fR" +True if either the DECNET source or destination address is +.IR host . +.IP "\fBifname \fIinterface\fR" +True if the packet was logged as coming from the specified interface (applies +only to packets logged by OpenBSD's or FreeBSD's +.BR pf (4)). +.IP "\fBon \fIinterface\fR" +Synonymous with the +.B ifname +modifier. +.IP "\fBrnr \fInum\fR" +True if the packet was logged as matching the specified PF rule number +(applies only to packets logged by OpenBSD's or FreeBSD's +.BR pf (4)). +.IP "\fBrulenum \fInum\fR" +Synonymous with the +.B rnr +modifier. +.IP "\fBreason \fIcode\fR" +True if the packet was logged with the specified PF reason code. The known +codes are: +.BR match , +.BR bad-offset , +.BR fragment , +.BR short , +.BR normalize , +and +.B memory +(applies only to packets logged by OpenBSD's or FreeBSD's +.BR pf (4)). +.IP "\fBrset \fIname\fR" +True if the packet was logged as matching the specified PF ruleset +name of an anchored ruleset (applies only to packets logged by OpenBSD's +or FreeBSD's +.BR pf (4)). +.IP "\fBruleset \fIname\fR" +Synonomous with the +.B rset +modifier. +.IP "\fBsrnr \fInum\fR" +True if the packet was logged as matching the specified PF rule number +of an anchored ruleset (applies only to packets logged by OpenBSD's or +FreeBSD's +.BR pf (4)). +.IP "\fBsubrulenum \fInum\fR" +Synonomous with the +.B srnr +modifier. +.IP "\fBaction \fIact\fR" +True if PF took the specified action when the packet was logged. Known actions +are: +.B pass +and +.B block +and, with later versions of +.BR pf (4)), +.BR nat , +.BR rdr , +.B binat +and +.B scrub +(applies only to packets logged by OpenBSD's or FreeBSD's +.BR pf (4)). +.IP "\fBwlan ra \fIehost\fR" +True if the IEEE 802.11 RA is +.IR ehost . +The RA field is used in all frames except for management frames. +.IP "\fBwlan ta \fIehost\fR" +True if the IEEE 802.11 TA is +.IR ehost . +The TA field is used in all frames except for management frames and +CTS (Clear To Send) and ACK (Acknowledgment) control frames. +.IP "\fBwlan addr1 \fIehost\fR" +True if the first IEEE 802.11 address is +.IR ehost . +.IP "\fBwlan addr2 \fIehost\fR" +True if the second IEEE 802.11 address, if present, is +.IR ehost . +The second address field is used in all frames except for CTS (Clear To +Send) and ACK (Acknowledgment) control frames. +.IP "\fBwlan addr3 \fIehost\fR" +True if the third IEEE 802.11 address, if present, is +.IR ehost . +The third address field is used in management and data frames, but not +in control frames. +.IP "\fBwlan addr4 \fIehost\fR" +True if the fourth IEEE 802.11 address, if present, is +.IR ehost . +The fourth address field is only used for +WDS (Wireless Distribution System) frames. +.IP "\fBip\fR, \fBip6\fR, \fBarp\fR, \fBrarp\fR, \fBatalk\fR, \fBaarp\fR, \fBdecnet\fR, \fBiso\fR, \fBstp\fR, \fBipx\fR, \fBnetbeui\fP" +Abbreviations for: +.in +.5i +.nf +\fBether proto \fIp\fR +.fi +.in -.5i +where \fIp\fR is one of the above protocols. +.IP "\fBlat\fR, \fBmoprc\fR, \fBmopdl\fR" +Abbreviations for: +.in +.5i +.nf +\fBether proto \fIp\fR +.fi +.in -.5i +where \fIp\fR is one of the above protocols. +Note that not all applications using +.BR pcap (3) +currently know how to parse these protocols. +.IP "\fBtype \fIwlan_type\fR" +True if the IEEE 802.11 frame type matches the specified \fIwlan_type\fR. +Valid \fIwlan_type\fRs are: +\fBmgt\fP, +\fBctl\fP +and \fBdata\fP. +.IP "\fBtype \fIwlan_type \fBsubtype \fIwlan_subtype\fR" +True if the IEEE 802.11 frame type matches the specified \fIwlan_type\fR +and frame subtype matches the specified \fIwlan_subtype\fR. +.IP +If the specified \fIwlan_type\fR is \fBmgt\fP, +then valid \fIwlan_subtype\fRs are: +\fBassoc-req\fP, +\fBassoc-resp\fP, +\fBreassoc-req\fP, +\fBreassoc-resp\fP, +\fBprobe-req\fP, +\fBprobe-resp\fP, +\fBbeacon\fP, +\fBatim\fP, +\fBdisassoc\fP, +\fBauth\fP and +\fBdeauth\fP. +.IP +If the specified \fIwlan_type\fR is \fBctl\fP, +then valid \fIwlan_subtype\fRs are: +\fBps-poll\fP, +\fBrts\fP, +\fBcts\fP, +\fBack\fP, +\fBcf-end\fP and +\fBcf-end-ack\fP. +.IP +If the specified \fIwlan_type\fR is \fBdata\fP, +then valid \fIwlan_subtype\fRs are: +\fBdata\fP, +\fBdata-cf-ack\fP, +\fBdata-cf-poll\fP, +\fBdata-cf-ack-poll\fP, +\fBnull\fP, +\fBcf-ack\fP, +\fBcf-poll\fP, +\fBcf-ack-poll\fP, +\fBqos-data\fP, +\fBqos-data-cf-ack\fP, +\fBqos-data-cf-poll\fP, +\fBqos-data-cf-ack-poll\fP, +\fBqos\fP, +\fBqos-cf-poll\fP and +\fBqos-cf-ack-poll\fP. +.IP "\fBsubtype \fIwlan_subtype\fR" +True if the IEEE 802.11 frame subtype matches the specified \fIwlan_subtype\fR +and frame has the type to which the specified \fIwlan_subtype\fR belongs. +.IP "\fBdir \fIdir\fR" +True if the IEEE 802.11 frame direction matches the specified +.IR dir . +Valid directions are: +.BR nods , +.BR tods , +.BR fromds , +.BR dstods , +or a numeric value. +.IP "\fBvlan \fI[vlan_id]\fR" +True if the packet is an IEEE 802.1Q VLAN packet. +If \fI[vlan_id]\fR is specified, only true if the packet has the specified +\fIvlan_id\fR. +Note that the first \fBvlan\fR keyword encountered in \fIexpression\fR +changes the decoding offsets for the remainder of \fIexpression\fR on +the assumption that the packet is a VLAN packet. The \fBvlan +\fI[vlan_id]\fR expression may be used more than once, to filter on VLAN +hierarchies. Each use of that expression increments the filter offsets +by 4. +.IP +For example: +.in +.5i +.nf +\fBvlan 100 && vlan 200\fR +.fi +.in -.5i +filters on VLAN 200 encapsulated within VLAN 100, and +.in +.5i +.nf +\fBvlan && vlan 300 && ip\fR +.fi +.in -.5i +filters IPv4 protocols encapsulated in VLAN 300 encapsulated within any +higher order VLAN. +.IP "\fBmpls \fI[label_num]\fR" +True if the packet is an MPLS packet. +If \fI[label_num]\fR is specified, only true is the packet has the specified +\fIlabel_num\fR. +Note that the first \fBmpls\fR keyword encountered in \fIexpression\fR +changes the decoding offsets for the remainder of \fIexpression\fR on +the assumption that the packet is a MPLS-encapsulated IP packet. The +\fBmpls \fI[label_num]\fR expression may be used more than once, to +filter on MPLS hierarchies. Each use of that expression increments the +filter offsets by 4. +.IP +For example: +.in +.5i +.nf +\fBmpls 100000 && mpls 1024\fR +.fi +.in -.5i +filters packets with an outer label of 100000 and an inner label of +1024, and +.in +.5i +.nf +\fBmpls && mpls 1024 && host 192.9.200.1\fR +.fi +.in -.5i +filters packets to or from 192.9.200.1 with an inner label of 1024 and +any outer label. +.IP \fBpppoed\fP +True if the packet is a PPP-over-Ethernet Discovery packet (Ethernet +type 0x8863). +.IP \fBpppoes\fP +True if the packet is a PPP-over-Ethernet Session packet (Ethernet +type 0x8864). +Note that the first \fBpppoes\fR keyword encountered in \fIexpression\fR +changes the decoding offsets for the remainder of \fIexpression\fR on +the assumption that the packet is a PPPoE session packet. +.IP +For example: +.in +.5i +.nf +\fBpppoes && ip\fR +.fi +.in -.5i +filters IPv4 protocols encapsulated in PPPoE. +.IP "\fBtcp\fR, \fBudp\fR, \fBicmp\fR" +Abbreviations for: +.in +.5i +.nf +\fBip proto \fIp\fR\fB or ip6 proto \fIp\fR +.fi +.in -.5i +where \fIp\fR is one of the above protocols. +.IP "\fBiso proto \fIprotocol\fR" +True if the packet is an OSI packet of protocol type \fIprotocol\fP. +\fIProtocol\fP can be a number or one of the names +\fBclnp\fP, \fBesis\fP, or \fBisis\fP. +.IP "\fBclnp\fR, \fBesis\fR, \fBisis\fR" +Abbreviations for: +.in +.5i +.nf +\fBiso proto \fIp\fR +.fi +.in -.5i +where \fIp\fR is one of the above protocols. +.IP "\fBl1\fR, \fBl2\fR, \fBiih\fR, \fBlsp\fR, \fBsnp\fR, \fBcsnp\fR, \fBpsnp\fR" +Abbreviations for IS-IS PDU types. +.IP "\fBvpi\fP \fIn\fR +True if the packet is an ATM packet, for SunATM on Solaris, with a +virtual path identifier of +.IR n . +.IP "\fBvci\fP \fIn\fR +True if the packet is an ATM packet, for SunATM on Solaris, with a +virtual channel identifier of +.IR n . +.IP \fBlane\fP +True if the packet is an ATM packet, for SunATM on Solaris, and is +an ATM LANE packet. +Note that the first \fBlane\fR keyword encountered in \fIexpression\fR +changes the tests done in the remainder of \fIexpression\fR +on the assumption that the packet is either a LANE emulated Ethernet +packet or a LANE LE Control packet. If \fBlane\fR isn't specified, the +tests are done under the assumption that the packet is an +LLC-encapsulated packet. +.IP \fBllc\fP +True if the packet is an ATM packet, for SunATM on Solaris, and is +an LLC-encapsulated packet. +.IP \fBoamf4s\fP +True if the packet is an ATM packet, for SunATM on Solaris, and is +a segment OAM F4 flow cell (VPI=0 & VCI=3). +.IP \fBoamf4e\fP +True if the packet is an ATM packet, for SunATM on Solaris, and is +an end-to-end OAM F4 flow cell (VPI=0 & VCI=4). +.IP \fBoamf4\fP +True if the packet is an ATM packet, for SunATM on Solaris, and is +a segment or end-to-end OAM F4 flow cell (VPI=0 & (VCI=3 | VCI=4)). +.IP \fBoam\fP +True if the packet is an ATM packet, for SunATM on Solaris, and is +a segment or end-to-end OAM F4 flow cell (VPI=0 & (VCI=3 | VCI=4)). +.IP \fBmetac\fP +True if the packet is an ATM packet, for SunATM on Solaris, and is +on a meta signaling circuit (VPI=0 & VCI=1). +.IP \fBbcc\fP +True if the packet is an ATM packet, for SunATM on Solaris, and is +on a broadcast signaling circuit (VPI=0 & VCI=2). +.IP \fBsc\fP +True if the packet is an ATM packet, for SunATM on Solaris, and is +on a signaling circuit (VPI=0 & VCI=5). +.IP \fBilmic\fP +True if the packet is an ATM packet, for SunATM on Solaris, and is +on an ILMI circuit (VPI=0 & VCI=16). +.IP \fBconnectmsg\fP +True if the packet is an ATM packet, for SunATM on Solaris, and is +on a signaling circuit and is a Q.2931 Setup, Call Proceeding, Connect, +Connect Ack, Release, or Release Done message. +.IP \fBmetaconnect\fP +True if the packet is an ATM packet, for SunATM on Solaris, and is +on a meta signaling circuit and is a Q.2931 Setup, Call Proceeding, Connect, +Release, or Release Done message. +.IP "\fIexpr relop expr\fR" +True if the relation holds, where \fIrelop\fR is one of >, <, >=, <=, =, +!=, and \fIexpr\fR is an arithmetic expression composed of integer +constants (expressed in standard C syntax), the normal binary operators +[+, -, *, /, &, |, <<, >>], a length operator, and special packet data +accessors. Note that all comparisons are unsigned, so that, for example, +0x80000000 and 0xffffffff are > 0. +To access +data inside the packet, use the following syntax: +.in +.5i +.nf +\fIproto\fB [ \fIexpr\fB : \fIsize\fB ]\fR +.fi +.in -.5i +\fIProto\fR is one of \fBether, fddi, tr, wlan, ppp, slip, link, +ip, arp, rarp, tcp, udp, icmp, ip6\fR or \fBradio\fR, and +indicates the protocol layer for the index operation. +(\fBether, fddi, wlan, tr, ppp, slip\fR and \fBlink\fR all refer to the +link layer. \fBradio\fR refers to the "radio header" added to some +802.11 captures.) +Note that \fItcp, udp\fR and other upper-layer protocol types only +apply to IPv4, not IPv6 (this will be fixed in the future). +The byte offset, relative to the indicated protocol layer, is +given by \fIexpr\fR. +\fISize\fR is optional and indicates the number of bytes in the +field of interest; it can be either one, two, or four, and defaults to one. +The length operator, indicated by the keyword \fBlen\fP, gives the +length of the packet. + +For example, `\fBether[0] & 1 != 0\fP' catches all multicast traffic. +The expression `\fBip[0] & 0xf != 5\fP' +catches all IPv4 packets with options. +The expression +`\fBip[6:2] & 0x1fff = 0\fP' +catches only unfragmented IPv4 datagrams and frag zero of fragmented +IPv4 datagrams. +This check is implicitly applied to the \fBtcp\fP and \fBudp\fP +index operations. +For instance, \fBtcp[0]\fP always means the first +byte of the TCP \fIheader\fP, and never means the first byte of an +intervening fragment. + +Some offsets and field values may be expressed as names rather than +as numeric values. +The following protocol header field offsets are +available: \fBicmptype\fP (ICMP type field), \fBicmpcode\fP (ICMP +code field), and \fBtcpflags\fP (TCP flags field). + +The following ICMP type field values are available: \fBicmp-echoreply\fP, +\fBicmp-unreach\fP, \fBicmp-sourcequench\fP, \fBicmp-redirect\fP, +\fBicmp-echo\fP, \fBicmp-routeradvert\fP, \fBicmp-routersolicit\fP, +\fBicmp-timxceed\fP, \fBicmp-paramprob\fP, \fBicmp-tstamp\fP, +\fBicmp-tstampreply\fP, \fBicmp-ireq\fP, \fBicmp-ireqreply\fP, +\fBicmp-maskreq\fP, \fBicmp-maskreply\fP. + +The following TCP flags field values are available: \fBtcp-fin\fP, +\fBtcp-syn\fP, \fBtcp-rst\fP, \fBtcp-push\fP, +\fBtcp-ack\fP, \fBtcp-urg\fP. +.LP +Primitives may be combined using: +.IP +A parenthesized group of primitives and operators +(parentheses are special to the Shell and must be escaped). +.IP +Negation (`\fB!\fP' or `\fBnot\fP'). +.IP +Concatenation (`\fB&&\fP' or `\fBand\fP'). +.IP +Alternation (`\fB||\fP' or `\fBor\fP'). +.LP +Negation has highest precedence. +Alternation and concatenation have equal precedence and associate +left to right. +Note that explicit \fBand\fR tokens, not juxtaposition, +are now required for concatenation. +.LP +If an identifier is given without a keyword, the most recent keyword +is assumed. +For example, +.in +.5i +.nf +\fBnot host vs and ace\fR +.fi +.in -.5i +is short for +.in +.5i +.nf +\fBnot host vs and host ace\fR +.fi +.in -.5i +which should not be confused with +.in +.5i +.nf +\fBnot ( host vs or ace )\fR +.fi +.in -.5i +.SH EXAMPLES +.LP +To select all packets arriving at or departing from \fIsundown\fP: +.RS +.nf +\fBhost sundown\fP +.fi +.RE +.LP +To select traffic between \fIhelios\fR and either \fIhot\fR or \fIace\fR: +.RS +.nf +\fBhost helios and \\( hot or ace \\)\fP +.fi +.RE +.LP +To select all IP packets between \fIace\fR and any host except \fIhelios\fR: +.RS +.nf +\fBip host ace and not helios\fP +.fi +.RE +.LP +To select all traffic between local hosts and hosts at Berkeley: +.RS +.nf +.B +net ucb-ether +.fi +.RE +.LP +To select all ftp traffic through internet gateway \fIsnup\fP: +.RS +.nf +.B +gateway snup and (port ftp or ftp-data) +.fi +.RE +.LP +To select traffic neither sourced from nor destined for local hosts +(if you gateway to one other net, this stuff should never make it +onto your local net). +.RS +.nf +.B +ip and not net \fIlocalnet\fP +.fi +.RE +.LP +To select the start and end packets (the SYN and FIN packets) of each +TCP conversation that involves a non-local host. +.RS +.nf +.B +tcp[tcpflags] & (tcp-syn|tcp-fin) != 0 and not src and dst net \fIlocalnet\fP +.fi +.RE +.LP +To select all IPv4 HTTP packets to and from port 80, i.e. print only +packets that contain data, not, for example, SYN and FIN packets and +ACK-only packets. (IPv6 is left as an exercise for the reader.) +.RS +.nf +.B +tcp port 80 and (((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0) +.fi +.RE +.LP +To select IP packets longer than 576 bytes sent through gateway \fIsnup\fP: +.RS +.nf +.B +gateway snup and ip[2:2] > 576 +.fi +.RE +.LP +To select IP broadcast or multicast packets that were +.I not +sent via Ethernet broadcast or multicast: +.RS +.nf +.B +ether[0] & 1 = 0 and ip[16] >= 224 +.fi +.RE +.LP +To select all ICMP packets that are not echo requests/replies (i.e., not +ping packets): +.RS +.nf +.B +icmp[icmptype] != icmp-echo and icmp[icmptype] != icmp-echoreply +.fi +.RE +.SH "SEE ALSO" +pcap(3PCAP) +.SH AUTHORS +The original authors are: +.LP +Van Jacobson, +Craig Leres and +Steven McCanne, all of the +Lawrence Berkeley National Laboratory, University of California, Berkeley, CA. +.LP +It is currently being maintained by tcpdump.org. +.LP +The current version of libpcap is available via http: +.LP +.RS +.I http://www.tcpdump.org/ +.RE +.LP +The original distribution is available via anonymous ftp: +.LP +.RS +.I ftp://ftp.ee.lbl.gov/tcpdump.tar.Z +.RE +.SH BUGS +Please send problems, bugs, questions, desirable enhancements, etc. to: +.LP +.RS +tcpdump-workers@lists.tcpdump.org +.RE +.LP +Filter expressions on fields other than those in Token Ring headers will +not correctly handle source-routed Token Ring packets. +.LP +Filter expressions on fields other than those in 802.11 headers will not +correctly handle 802.11 data packets with both To DS and From DS set. +.LP +.BR "ip6 proto" +should chase header chain, but at this moment it does not. +.BR "ip6 protochain" +is supplied for this behavior. +.LP +Arithmetic expression against transport layer headers, like \fBtcp[0]\fP, +does not work against IPv6 packets. +It only looks at IPv4 packets. diff --git a/pcap-int.h b/pcap-int.h new file mode 100644 index 0000000..8444e62 --- /dev/null +++ b/pcap-int.h @@ -0,0 +1,495 @@ +/* + * Copyright (c) 1994, 1995, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#) $Header: /tcpdump/master/libpcap/pcap-int.h,v 1.94 2008-09-16 00:20:23 guy Exp $ (LBL) + */ + +#ifndef pcap_int_h +#define pcap_int_h + +#include + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef HAVE_LIBDLPI +#include +#endif + +#ifdef WIN32 +#include +extern CRITICAL_SECTION g_PcapCompileCriticalSection; +#endif /* WIN32 */ + +#ifdef MSDOS +#include +#include +#endif + +#ifdef HAVE_SNF_API +#include +#endif + +#if (defined(_MSC_VER) && (_MSC_VER <= 1200)) /* we are compiling with Visual Studio 6, that doesn't support the LL suffix*/ + +/* + * Swap byte ordering of unsigned long long timestamp on a big endian + * machine. + */ +#define SWAPLL(ull) ((ull & 0xff00000000000000) >> 56) | \ + ((ull & 0x00ff000000000000) >> 40) | \ + ((ull & 0x0000ff0000000000) >> 24) | \ + ((ull & 0x000000ff00000000) >> 8) | \ + ((ull & 0x00000000ff000000) << 8) | \ + ((ull & 0x0000000000ff0000) << 24) | \ + ((ull & 0x000000000000ff00) << 40) | \ + ((ull & 0x00000000000000ff) << 56) + +#else /* A recent Visual studio compiler or not VC */ + +/* + * Swap byte ordering of unsigned long long timestamp on a big endian + * machine. + */ +#define SWAPLL(ull) ((ull & 0xff00000000000000LL) >> 56) | \ + ((ull & 0x00ff000000000000LL) >> 40) | \ + ((ull & 0x0000ff0000000000LL) >> 24) | \ + ((ull & 0x000000ff00000000LL) >> 8) | \ + ((ull & 0x00000000ff000000LL) << 8) | \ + ((ull & 0x0000000000ff0000LL) << 24) | \ + ((ull & 0x000000000000ff00LL) << 40) | \ + ((ull & 0x00000000000000ffLL) << 56) + +#endif /* _MSC_VER */ + +/* + * Savefile + */ +typedef enum { + NOT_SWAPPED, + SWAPPED, + MAYBE_SWAPPED +} swapped_type_t; + +/* + * Used when reading a savefile. + */ +struct pcap_sf { + FILE *rfile; + int (*next_packet_op)(pcap_t *, struct pcap_pkthdr *, u_char **); + int swapped; + size_t hdrsize; + swapped_type_t lengths_swapped; + int version_major; + int version_minor; + bpf_u_int32 ifcount; /* number of interfaces seen in this capture */ + u_int tsresol; /* time stamp resolution */ + u_int tsscale; /* scaling factor for resolution -> microseconds */ + u_int64_t tsoffset; /* time stamp offset */ +}; + +/* + * Used when doing a live capture. + */ +struct pcap_md { + struct pcap_stat stat; + /*XXX*/ + int use_bpf; /* using kernel filter */ + u_long TotPkts; /* can't oflow for 79 hrs on ether */ + u_long TotAccepted; /* count accepted by filter */ + u_long TotDrops; /* count of dropped packets */ + long TotMissed; /* missed by i/f during this run */ + long OrigMissed; /* missed by i/f before this run */ + char *device; /* device name */ + int timeout; /* timeout for buffering */ + int must_do_on_close; /* stuff we must do when we close */ + struct pcap *next; /* list of open pcaps that need stuff cleared on close */ +#ifdef linux + int sock_packet; /* using Linux 2.0 compatible interface */ + int cooked; /* using SOCK_DGRAM rather than SOCK_RAW */ + int ifindex; /* interface index of device we're bound to */ + int lo_ifindex; /* interface index of the loopback device */ + u_int packets_read; /* count of packets read with recvfrom() */ + bpf_u_int32 oldmode; /* mode to restore when turning monitor mode off */ + char *mondevice; /* mac80211 monitor device we created */ + u_char *mmapbuf; /* memory-mapped region pointer */ + size_t mmapbuflen; /* size of region */ + u_int tp_version; /* version of tpacket_hdr for mmaped ring */ + u_int tp_hdrlen; /* hdrlen of tpacket_hdr for mmaped ring */ + u_char *oneshot_buffer; /* buffer for copy of packet */ + long proc_dropped; /* packets reported dropped by /proc/net/dev */ +#endif /* linux */ + +#ifdef HAVE_DAG_API +#ifdef HAVE_DAG_STREAMS_API + u_char *dag_mem_bottom; /* DAG card current memory bottom pointer */ + u_char *dag_mem_top; /* DAG card current memory top pointer */ +#else /* HAVE_DAG_STREAMS_API */ + void *dag_mem_base; /* DAG card memory base address */ + u_int dag_mem_bottom; /* DAG card current memory bottom offset */ + u_int dag_mem_top; /* DAG card current memory top offset */ +#endif /* HAVE_DAG_STREAMS_API */ + int dag_fcs_bits; /* Number of checksum bits from link layer */ + int dag_offset_flags; /* Flags to pass to dag_offset(). */ + int dag_stream; /* DAG stream number */ + int dag_timeout; /* timeout specified to pcap_open_live. + * Same as in linux above, introduce + * generally? */ +#endif /* HAVE_DAG_API */ +#ifdef HAVE_SNF_API + snf_handle_t snf_handle; /* opaque device handle */ + snf_ring_t snf_ring; /* opaque device ring handle */ + int snf_timeout; + int snf_boardnum; +#endif /*HAVE_SNF_API*/ + +#ifdef HAVE_ZEROCOPY_BPF + /* + * Zero-copy read buffer -- for zero-copy BPF. 'buffer' above will + * alternative between these two actual mmap'd buffers as required. + * As there is a header on the front size of the mmap'd buffer, only + * some of the buffer is exposed to libpcap as a whole via bufsize; + * zbufsize is the true size. zbuffer tracks the current zbuf + * assocated with buffer so that it can be used to decide which the + * next buffer to read will be. + */ + u_char *zbuf1, *zbuf2, *zbuffer; + u_int zbufsize; + u_int zerocopy; + u_int interrupted; + struct timespec firstsel; + /* + * If there's currently a buffer being actively processed, then it is + * referenced here; 'buffer' is also pointed at it, but offset by the + * size of the header. + */ + struct bpf_zbuf_header *bzh; +#endif /* HAVE_ZEROCOPY_BPF */ +}; + +/* + * Stuff to do when we close. + */ +#define MUST_CLEAR_PROMISC 0x00000001 /* clear promiscuous mode */ +#define MUST_CLEAR_RFMON 0x00000002 /* clear rfmon (monitor) mode */ +#define MUST_DELETE_MONIF 0x00000004 /* delete monitor-mode interface */ + +struct pcap_opt { + int buffer_size; + char *source; + int promisc; + int rfmon; + int tstamp_type; +}; + +/* + * Ultrix, DEC OSF/1^H^H^H^H^H^H^H^H^HDigital UNIX^H^H^H^H^H^H^H^H^H^H^H^H + * Tru64 UNIX, and some versions of NetBSD pad FDDI packets to make everything + * line up on a nice boundary. + */ +#ifdef __NetBSD__ +#include /* needed to declare __NetBSD_Version__ */ +#endif + +#if defined(ultrix) || defined(__osf__) || (defined(__NetBSD__) && __NetBSD_Version__ > 106000000) +#define PCAP_FDDIPAD 3 +#endif + +typedef int (*activate_op_t)(pcap_t *); +typedef int (*can_set_rfmon_op_t)(pcap_t *); +typedef int (*read_op_t)(pcap_t *, int cnt, pcap_handler, u_char *); +typedef int (*inject_op_t)(pcap_t *, const void *, size_t); +typedef int (*setfilter_op_t)(pcap_t *, struct bpf_program *); +typedef int (*setdirection_op_t)(pcap_t *, pcap_direction_t); +typedef int (*set_datalink_op_t)(pcap_t *, int); +typedef int (*getnonblock_op_t)(pcap_t *, char *); +typedef int (*setnonblock_op_t)(pcap_t *, int, char *); +typedef int (*stats_op_t)(pcap_t *, struct pcap_stat *); +#ifdef WIN32 +typedef int (*setbuff_op_t)(pcap_t *, int); +typedef int (*setmode_op_t)(pcap_t *, int); +typedef int (*setmintocopy_op_t)(pcap_t *, int); +#endif +typedef void (*cleanup_op_t)(pcap_t *); + +struct pcap { +#ifdef WIN32 + ADAPTER *adapter; + LPPACKET Packet; + int nonblock; +#else + int fd; + int selectable_fd; + int send_fd; +#endif /* WIN32 */ + +#ifdef HAVE_LIBDLPI + dlpi_handle_t dlpi_hd; +#endif + int snapshot; + int linktype; /* Network linktype */ + int linktype_ext; /* Extended information stored in the linktype field of a file */ + int tzoff; /* timezone offset */ + int offset; /* offset for proper alignment */ + int activated; /* true if the capture is really started */ + int oldstyle; /* if we're opening with pcap_open_live() */ + + int break_loop; /* flag set to force break from packet-reading loop */ + +#ifdef PCAP_FDDIPAD + int fddipad; +#endif + +#ifdef MSDOS + void (*wait_proc)(void); /* call proc while waiting */ +#endif + + struct pcap_sf sf; + struct pcap_md md; + struct pcap_opt opt; + + /* + * Read buffer. + */ + int bufsize; + u_char *buffer; + u_char *bp; + int cc; + + /* + * Place holder for pcap_next(). + */ + u_char *pkt; + + /* We're accepting only packets in this direction/these directions. */ + pcap_direction_t direction; + + /* + * Methods. + */ + activate_op_t activate_op; + can_set_rfmon_op_t can_set_rfmon_op; + read_op_t read_op; + inject_op_t inject_op; + setfilter_op_t setfilter_op; + setdirection_op_t setdirection_op; + set_datalink_op_t set_datalink_op; + getnonblock_op_t getnonblock_op; + setnonblock_op_t setnonblock_op; + stats_op_t stats_op; + + /* + * Routine to use as callback for pcap_next()/pcap_next_ex(). + */ + pcap_handler oneshot_callback; + +#ifdef WIN32 + /* + * These are, at least currently, specific to the Win32 NPF + * driver. + */ + setbuff_op_t setbuff_op; + setmode_op_t setmode_op; + setmintocopy_op_t setmintocopy_op; +#endif + cleanup_op_t cleanup_op; + + /* + * Placeholder for filter code if bpf not in kernel. + */ + struct bpf_program fcode; + + char errbuf[PCAP_ERRBUF_SIZE + 1]; + int dlt_count; + u_int *dlt_list; + int tstamp_type_count; + u_int *tstamp_type_list; + + struct pcap_pkthdr pcap_header; /* This is needed for the pcap_next_ex() to work */ +}; + +/* + * This is a timeval as stored in a savefile. + * It has to use the same types everywhere, independent of the actual + * `struct timeval'; `struct timeval' has 32-bit tv_sec values on some + * platforms and 64-bit tv_sec values on other platforms, and writing + * out native `struct timeval' values would mean files could only be + * read on systems with the same tv_sec size as the system on which + * the file was written. + */ + +struct pcap_timeval { + bpf_int32 tv_sec; /* seconds */ + bpf_int32 tv_usec; /* microseconds */ +}; + +/* + * This is a `pcap_pkthdr' as actually stored in a savefile. + * + * Do not change the format of this structure, in any way (this includes + * changes that only affect the length of fields in this structure), + * and do not make the time stamp anything other than seconds and + * microseconds (e.g., seconds and nanoseconds). Instead: + * + * introduce a new structure for the new format; + * + * send mail to "tcpdump-workers@lists.tcpdump.org", requesting + * a new magic number for your new capture file format, and, when + * you get the new magic number, put it in "savefile.c"; + * + * use that magic number for save files with the changed record + * header; + * + * make the code in "savefile.c" capable of reading files with + * the old record header as well as files with the new record header + * (using the magic number to determine the header format). + * + * Then supply the changes as a patch at + * + * http://sourceforge.net/projects/libpcap/ + * + * so that future versions of libpcap and programs that use it (such as + * tcpdump) will be able to read your new capture file format. + */ + +struct pcap_sf_pkthdr { + struct pcap_timeval ts; /* time stamp */ + bpf_u_int32 caplen; /* length of portion present */ + bpf_u_int32 len; /* length this packet (off wire) */ +}; + +/* + * How a `pcap_pkthdr' is actually stored in savefiles written + * by some patched versions of libpcap (e.g. the ones in Red + * Hat Linux 6.1 and 6.2). + * + * Do not change the format of this structure, in any way (this includes + * changes that only affect the length of fields in this structure). + * Instead, introduce a new structure, as per the above. + */ + +struct pcap_sf_patched_pkthdr { + struct pcap_timeval ts; /* time stamp */ + bpf_u_int32 caplen; /* length of portion present */ + bpf_u_int32 len; /* length this packet (off wire) */ + int index; + unsigned short protocol; + unsigned char pkt_type; +}; + +/* + * User data structure for the one-shot callback used for pcap_next() + * and pcap_next_ex(). + */ +struct oneshot_userdata { + struct pcap_pkthdr *hdr; + const u_char **pkt; + pcap_t *pd; +}; + +int yylex(void); + +#ifndef min +#define min(a, b) ((a) > (b) ? (b) : (a)) +#endif + +/* XXX should these be in pcap.h? */ +int pcap_offline_read(pcap_t *, int, pcap_handler, u_char *); +int pcap_read(pcap_t *, int cnt, pcap_handler, u_char *); + +#ifndef HAVE_STRLCPY +#define strlcpy(x, y, z) \ + (strncpy((x), (y), (z)), \ + ((z) <= 0 ? 0 : ((x)[(z) - 1] = '\0')), \ + strlen((y))) +#endif + +#include + +#if !defined(HAVE_SNPRINTF) +#define snprintf pcap_snprintf +extern int snprintf (char *, size_t, const char *, ...); +#endif + +#if !defined(HAVE_VSNPRINTF) +#define vsnprintf pcap_vsnprintf +extern int vsnprintf (char *, size_t, const char *, va_list ap); +#endif + +/* + * Routines that most pcap implementations can use for non-blocking mode. + */ +#if !defined(WIN32) && !defined(MSDOS) +int pcap_getnonblock_fd(pcap_t *, char *); +int pcap_setnonblock_fd(pcap_t *p, int, char *); +#endif + +pcap_t *pcap_create_common(const char *, char *); +int pcap_do_addexit(pcap_t *); +void pcap_add_to_pcaps_to_close(pcap_t *); +void pcap_remove_from_pcaps_to_close(pcap_t *); +void pcap_cleanup_live_common(pcap_t *); +int pcap_not_initialized(pcap_t *); +int pcap_check_activated(pcap_t *); + +/* + * Internal interfaces for "pcap_findalldevs()". + * + * "pcap_platform_finddevs()" is a platform-dependent routine to + * add devices not found by the "standard" mechanisms (SIOCGIFCONF, + * "getifaddrs()", etc.. + * + * "pcap_add_if()" adds an interface to the list of interfaces. + */ +int pcap_platform_finddevs(pcap_if_t **, char *); +int add_addr_to_iflist(pcap_if_t **, const char *, u_int, struct sockaddr *, + size_t, struct sockaddr *, size_t, struct sockaddr *, size_t, + struct sockaddr *, size_t, char *); +int pcap_add_if(pcap_if_t **, const char *, u_int, const char *, char *); +struct sockaddr *dup_sockaddr(struct sockaddr *, size_t); +int add_or_find_if(pcap_if_t **, pcap_if_t **, const char *, u_int, + const char *, char *); + +#ifdef WIN32 +char *pcap_win32strerror(void); +#endif + +int install_bpf_program(pcap_t *, struct bpf_program *); + +int pcap_strcasecmp(const char *, const char *); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/pcap-libdlpi.c b/pcap-libdlpi.c new file mode 100644 index 0000000..8d6a038 --- /dev/null +++ b/pcap-libdlpi.c @@ -0,0 +1,404 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * This code contributed by Sagun Shakya (sagun.shakya@sun.com) + */ +/* + * Packet capture routines for DLPI using libdlpi under SunOS 5.11. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-libdlpi.c,v 1.6 2008-04-14 20:40:58 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "pcap-int.h" +#include "dlpisubs.h" + +/* Forwards. */ +static int dlpromiscon(pcap_t *, bpf_u_int32); +static int pcap_read_libdlpi(pcap_t *, int, pcap_handler, u_char *); +static int pcap_inject_libdlpi(pcap_t *, const void *, size_t); +static void pcap_close_libdlpi(pcap_t *); +static void pcap_libdlpi_err(const char *, const char *, int, char *); +static void pcap_cleanup_libdlpi(pcap_t *); + +/* + * list_interfaces() will list all the network links that are + * available on a system. + */ +static boolean_t list_interfaces(const char *, void *); + +typedef struct linknamelist { + char linkname[DLPI_LINKNAME_MAX]; + struct linknamelist *lnl_next; +} linknamelist_t; + +typedef struct linkwalk { + linknamelist_t *lw_list; + int lw_err; +} linkwalk_t; + +/* + * The caller of this function should free the memory allocated + * for each linknamelist_t "entry" allocated. + */ +static boolean_t +list_interfaces(const char *linkname, void *arg) +{ + linkwalk_t *lwp = arg; + linknamelist_t *entry; + + if ((entry = calloc(1, sizeof(linknamelist_t))) == NULL) { + lwp->lw_err = ENOMEM; + return (B_TRUE); + } + (void) strlcpy(entry->linkname, linkname, DLPI_LINKNAME_MAX); + + if (lwp->lw_list == NULL) { + lwp->lw_list = entry; + } else { + entry->lnl_next = lwp->lw_list; + lwp->lw_list = entry; + } + + return (B_FALSE); +} + +static int +pcap_activate_libdlpi(pcap_t *p) +{ + int retv; + dlpi_handle_t dh; + dlpi_info_t dlinfo; + int err = PCAP_ERROR; + + /* + * Enable Solaris raw and passive DLPI extensions; + * dlpi_open() will not fail if the underlying link does not support + * passive mode. See dlpi(7P) for details. + */ + retv = dlpi_open(p->opt.source, &dh, DLPI_RAW|DLPI_PASSIVE); + if (retv != DLPI_SUCCESS) { + if (retv == DLPI_ELINKNAMEINVAL || retv == DLPI_ENOLINK) + err = PCAP_ERROR_NO_SUCH_DEVICE; + else if (retv == DL_SYSERR && + (errno == EPERM || errno == EACCES)) + err = PCAP_ERROR_PERM_DENIED; + pcap_libdlpi_err(p->opt.source, "dlpi_open", retv, + p->errbuf); + return (err); + } + p->dlpi_hd = dh; + + if (p->opt.rfmon) { + /* + * This device exists, but we don't support monitor mode + * any platforms that support DLPI. + */ + err = PCAP_ERROR_RFMON_NOTSUP; + goto bad; + } + + /* Bind with DLPI_ANY_SAP. */ + if ((retv = dlpi_bind(p->dlpi_hd, DLPI_ANY_SAP, 0)) != DLPI_SUCCESS) { + pcap_libdlpi_err(p->opt.source, "dlpi_bind", retv, p->errbuf); + goto bad; + } + + /* Enable promiscuous mode. */ + if (p->opt.promisc) { + err = dlpromiscon(p, DL_PROMISC_PHYS); + if (err < 0) { + /* + * "You don't have permission to capture on + * this device" and "you don't have permission + * to capture in promiscuous mode on this + * device" are different; let the user know, + * so if they can't get permission to + * capture in promiscuous mode, they can at + * least try to capture in non-promiscuous + * mode. + * + * XXX - you might have to capture in + * promiscuous mode to see outgoing packets. + */ + if (err == PCAP_ERROR_PERM_DENIED) + err = PCAP_ERROR_PROMISC_PERM_DENIED; + goto bad; + } + } else { + /* Try to enable multicast. */ + err = dlpromiscon(p, DL_PROMISC_MULTI); + if (err < 0) + goto bad; + } + + /* Try to enable SAP promiscuity. */ + err = dlpromiscon(p, DL_PROMISC_SAP); + if (err < 0) { + /* + * Not fatal, since the DL_PROMISC_PHYS mode worked. + * Report it as a warning, however. + */ + if (p->opt.promisc) + err = PCAP_WARNING; + else + goto bad; + } + + /* Determine link type. */ + if ((retv = dlpi_info(p->dlpi_hd, &dlinfo, 0)) != DLPI_SUCCESS) { + pcap_libdlpi_err(p->opt.source, "dlpi_info", retv, p->errbuf); + goto bad; + } + + if (pcap_process_mactype(p, dlinfo.di_mactype) != 0) + goto bad; + + p->fd = dlpi_fd(p->dlpi_hd); + + /* Push and configure bufmod. */ + if (pcap_conf_bufmod(p, p->snapshot, p->md.timeout) != 0) + goto bad; + + /* + * Flush the read side. + */ + if (ioctl(p->fd, I_FLUSH, FLUSHR) != 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "FLUSHR: %s", + pcap_strerror(errno)); + goto bad; + } + + /* Allocate data buffer. */ + if (pcap_alloc_databuf(p) != 0) + goto bad; + + /* + * "p->fd" is a FD for a STREAMS device, so "select()" and + * "poll()" should work on it. + */ + p->selectable_fd = p->fd; + + p->read_op = pcap_read_libdlpi; + p->inject_op = pcap_inject_libdlpi; + p->setfilter_op = install_bpf_program; /* No kernel filtering */ + p->setdirection_op = NULL; /* Not implemented */ + p->set_datalink_op = NULL; /* Can't change data link type */ + p->getnonblock_op = pcap_getnonblock_fd; + p->setnonblock_op = pcap_setnonblock_fd; + p->stats_op = pcap_stats_dlpi; + p->cleanup_op = pcap_cleanup_libdlpi; + + return (0); +bad: + pcap_cleanup_libdlpi(p); + return (err); +} + +#define STRINGIFY(n) #n + +static int +dlpromiscon(pcap_t *p, bpf_u_int32 level) +{ + int err; + + retv = dlpi_promiscon(p->hd, level); + if (retv != DLPI_SUCCESS) { + if (retv == DL_SYSERR && + (errno == EPERM || errno == EACCES)) + err = PCAP_ERROR_PERM_DENIED; + else + err = PCAP_ERROR; + pcap_libdlpi_err(p->opt.source, "dlpi_promiscon" STRINGIFY(level), + retv, p->errbuf); + return (err); + } + return (0); +} + +/* + * In Solaris, the "standard" mechanism" i.e SIOCGLIFCONF will only find + * network links that are plumbed and are up. dlpi_walk(3DLPI) will find + * additional network links present in the system. + */ +int +pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf) +{ + int retv = 0; + + linknamelist_t *entry, *next; + linkwalk_t lw = {NULL, 0}; + int save_errno; + + /* dlpi_walk() for loopback will be added here. */ + + dlpi_walk(list_interfaces, &lw, 0); + + if (lw.lw_err != 0) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "dlpi_walk: %s", pcap_strerror(lw.lw_err)); + retv = -1; + goto done; + } + + /* Add linkname if it does not exist on the list. */ + for (entry = lw.lw_list; entry != NULL; entry = entry->lnl_next) { + if (pcap_add_if(alldevsp, entry->linkname, 0, NULL, errbuf) < 0) + retv = -1; + } +done: + save_errno = errno; + for (entry = lw.lw_list; entry != NULL; entry = next) { + next = entry->lnl_next; + free(entry); + } + errno = save_errno; + + return (retv); +} + +/* + * Read data received on DLPI handle. Returns -2 if told to terminate, else + * returns the number of packets read. + */ +static int +pcap_read_libdlpi(pcap_t *p, int count, pcap_handler callback, u_char *user) +{ + int len; + u_char *bufp; + size_t msglen; + int retv; + + len = p->cc; + if (len != 0) { + bufp = p->bp; + goto process_pkts; + } + do { + /* Has "pcap_breakloop()" been called? */ + if (p->break_loop) { + /* + * Yes - clear the flag that indicates that it has, + * and return -2 to indicate that we were told to + * break out of the loop. + */ + p->break_loop = 0; + return (-2); + } + + msglen = p->bufsize; + bufp = p->buffer + p->offset; + + retv = dlpi_recv(p->dlpi_hd, NULL, NULL, bufp, + &msglen, -1, NULL); + if (retv != DLPI_SUCCESS) { + /* + * This is most likely a call to terminate out of the + * loop. So, do not return an error message, instead + * check if "pcap_breakloop()" has been called above. + */ + if (retv == DL_SYSERR && errno == EINTR) { + len = 0; + continue; + } + pcap_libdlpi_err(dlpi_linkname(p->dlpi_hd), + "dlpi_recv", retv, p->errbuf); + return (-1); + } + len = msglen; + } while (len == 0); + +process_pkts: + return (pcap_process_pkts(p, callback, user, count, bufp, len)); +} + +static int +pcap_inject_libdlpi(pcap_t *p, const void *buf, size_t size) +{ + int retv; + + retv = dlpi_send(p->dlpi_hd, NULL, 0, buf, size, NULL); + if (retv != DLPI_SUCCESS) { + pcap_libdlpi_err(dlpi_linkname(p->dlpi_hd), "dlpi_send", retv, + p->errbuf); + return (-1); + } + /* + * dlpi_send(3DLPI) does not provide a way to return the number of + * bytes sent on the wire. Based on the fact that DLPI_SUCCESS was + * returned we are assuming 'size' bytes were sent. + */ + return (size); +} + +/* + * Close dlpi handle. + */ +static void +pcap_cleanup_libdlpi(pcap_t *p) +{ + if (p->dlpi_hd != NULL) { + dlpi_close(p->dlpi_hd); + p->dlpi_hd = NULL; + p->fd = -1; + } + pcap_cleanup_live_common(p); +} + +/* + * Write error message to buffer. + */ +static void +pcap_libdlpi_err(const char *linkname, const char *func, int err, char *errbuf) +{ + snprintf(errbuf, PCAP_ERRBUF_SIZE, "libpcap: %s failed on %s: %s", + func, linkname, dlpi_strerror(err)); +} + +pcap_t * +pcap_create(const char *device, char *ebuf) +{ + pcap_t *p; + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return (NULL); + + p->activate_op = pcap_activate_libdlpi; + return (p); +} diff --git a/pcap-linktype.manmisc.in b/pcap-linktype.manmisc.in new file mode 100644 index 0000000..8904387 --- /dev/null +++ b/pcap-linktype.manmisc.in @@ -0,0 +1,50 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap-linktype.manmisc.in,v 1.3 2008-10-27 22:52:30 guy Exp $ +.\" +.\" Copyright (c) 1987, 1988, 1989, 1990, 1991, 1992, 1994, 1995, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP-LINKTYPE @MAN_MISC_INFO@ "23 October 2008" +.SH NAME +pcap-linktype \- link-layer header types supported by libpcap +.SH DESCRIPTION +For a live capture or ``savefile'', libpcap supplies, as the return +value of the +.BR pcap_datalink (3PCAP) +routine, a value that indicates the type of link-layer header at the +beginning of the packets it provides. This is not necessarily the type +of link-layer header that the packets being captured have on the network +from which they're being captured; for example, packets from an IEEE +802.11 network might be provided by libpcap with Ethernet headers that +the network adapter or the network adapter driver generates from the +802.11 headers. The names for those values begin with +.BR DLT_ , +so they are sometimes called "DLT_ values". +.PP +The values stored in the link-layer header type field in the savefile +header are, in most but not all cases, the same as the values returned +by +.BR pcap_datalink() . +The names for those values begin with +.BR LINKTYPE_ . +.PP +The link-layer header types supported by libpcap are described at +http://www.tcpdump.org/linktypes.html. +.SH SEE ALSO +pcap_datalink(3PCAP) diff --git a/pcap-linux.c b/pcap-linux.c new file mode 100644 index 0000000..8168e47 --- /dev/null +++ b/pcap-linux.c @@ -0,0 +1,5561 @@ +/* + * pcap-linux.c: Packet capture interface to the Linux kernel + * + * Copyright (c) 2000 Torsten Landschoff + * Sebastian Krahmer + * + * License: BSD + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. The names of the authors may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * Modifications: Added PACKET_MMAP support + * Paolo Abeni + * + * based on previous works of: + * Simon Patarin + * Phil Wood + * + * Monitor-mode support for mac80211 includes code taken from the iw + * command; the copyright notice for that code is + * + * Copyright (c) 2007, 2008 Johannes Berg + * Copyright (c) 2007 Andy Lutomirski + * Copyright (c) 2007 Mike Kershaw + * Copyright (c) 2008 Gábor Stefanik + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-linux.c,v 1.164 2008-12-14 22:00:57 guy Exp $ (LBL)"; +#endif + +/* + * Known problems with 2.0[.x] kernels: + * + * - The loopback device gives every packet twice; on 2.2[.x] kernels, + * if we use PF_PACKET, we can filter out the transmitted version + * of the packet by using data in the "sockaddr_ll" returned by + * "recvfrom()", but, on 2.0[.x] kernels, we have to use + * PF_INET/SOCK_PACKET, which means "recvfrom()" supplies a + * "sockaddr_pkt" which doesn't give us enough information to let + * us do that. + * + * - We have to set the interface's IFF_PROMISC flag ourselves, if + * we're to run in promiscuous mode, which means we have to turn + * it off ourselves when we're done; the kernel doesn't keep track + * of how many sockets are listening promiscuously, which means + * it won't get turned off automatically when no sockets are + * listening promiscuously. We catch "pcap_close()" and, for + * interfaces we put into promiscuous mode, take them out of + * promiscuous mode - which isn't necessarily the right thing to + * do, if another socket also requested promiscuous mode between + * the time when we opened the socket and the time when we close + * the socket. + * + * - MSG_TRUNC isn't supported, so you can't specify that "recvfrom()" + * return the amount of data that you could have read, rather than + * the amount that was returned, so we can't just allocate a buffer + * whose size is the snapshot length and pass the snapshot length + * as the byte count, and also pass MSG_TRUNC, so that the return + * value tells us how long the packet was on the wire. + * + * This means that, if we want to get the actual size of the packet, + * so we can return it in the "len" field of the packet header, + * we have to read the entire packet, not just the part that fits + * within the snapshot length, and thus waste CPU time copying data + * from the kernel that our caller won't see. + * + * We have to get the actual size, and supply it in "len", because + * otherwise, the IP dissector in tcpdump, for example, will complain + * about "truncated-ip", as the packet will appear to have been + * shorter, on the wire, than the IP header said it should have been. + */ + + +#define _GNU_SOURCE + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "pcap-int.h" +#include "pcap/sll.h" +#include "pcap/vlan.h" + +#ifdef HAVE_DAG_API +#include "pcap-dag.h" +#endif /* HAVE_DAG_API */ + +#ifdef HAVE_SEPTEL_API +#include "pcap-septel.h" +#endif /* HAVE_SEPTEL_API */ + +#ifdef HAVE_SNF_API +#include "pcap-snf.h" +#endif /* HAVE_SNF_API */ + +#ifdef PCAP_SUPPORT_USB +#include "pcap-usb-linux.h" +#endif + +#ifdef PCAP_SUPPORT_BT +#include "pcap-bt-linux.h" +#endif + +#ifdef PCAP_SUPPORT_CAN +#include "pcap-can-linux.h" +#endif + +#if PCAP_SUPPORT_CANUSB +#include "pcap-canusb-linux.h" +#endif + +#ifdef PCAP_SUPPORT_NETFILTER +#include "pcap-netfilter-linux.h" +#endif + +/* + * If PF_PACKET is defined, we can use {SOCK_RAW,SOCK_DGRAM}/PF_PACKET + * sockets rather than SOCK_PACKET sockets. + * + * To use them, we include rather than + * ; we do so because + * + * some Linux distributions (e.g., Slackware 4.0) have 2.2 or + * later kernels and libc5, and don't provide a + * file; + * + * not all versions of glibc2 have a file + * that defines stuff needed for some of the 2.4-or-later-kernel + * features, so if the system has a 2.4 or later kernel, we + * still can't use those features. + * + * We're already including a number of other headers, and + * this code is Linux-specific (no other OS has PF_PACKET sockets as + * a raw packet capture mechanism), so it's not as if you gain any + * useful portability by using + * + * XXX - should we just include even if PF_PACKET + * isn't defined? It only defines one data structure in 2.0.x, so + * it shouldn't cause any problems. + */ +#ifdef PF_PACKET +# include + + /* + * On at least some Linux distributions (for example, Red Hat 5.2), + * there's no file, but PF_PACKET is defined if + * you include , but doesn't define + * any of the PF_PACKET stuff such as "struct sockaddr_ll" or any of + * the PACKET_xxx stuff. + * + * So we check whether PACKET_HOST is defined, and assume that we have + * PF_PACKET sockets only if it is defined. + */ +# ifdef PACKET_HOST +# define HAVE_PF_PACKET_SOCKETS +# ifdef PACKET_AUXDATA +# define HAVE_PACKET_AUXDATA +# endif /* PACKET_AUXDATA */ +# endif /* PACKET_HOST */ + + + /* check for memory mapped access avaibility. We assume every needed + * struct is defined if the macro TPACKET_HDRLEN is defined, because it + * uses many ring related structs and macros */ +# ifdef TPACKET_HDRLEN +# define HAVE_PACKET_RING +# ifdef TPACKET2_HDRLEN +# define HAVE_TPACKET2 +# else +# define TPACKET_V1 0 +# endif /* TPACKET2_HDRLEN */ +# endif /* TPACKET_HDRLEN */ +#endif /* PF_PACKET */ + +#ifdef SO_ATTACH_FILTER +#include +#include +#endif + +/* + * We need linux/sockios.h if we have linux/net_tstamp.h (for time stamp + * specification) or linux/ethtool.h (for ethtool ioctls to get offloading + * information). + */ +#if defined(HAVE_LINUX_NET_TSTAMP_H) || defined(HAVE_LINUX_ETHTOOL_H) +#include +#endif + +#ifdef HAVE_LINUX_NET_TSTAMP_H +#include +#endif + +/* + * Got Wireless Extensions? + */ +#ifdef HAVE_LINUX_WIRELESS_H +#include +#endif /* HAVE_LINUX_WIRELESS_H */ + +/* + * Got libnl? + */ +#ifdef HAVE_LIBNL +#include + +#include +#include +#include +#include +#include +#endif /* HAVE_LIBNL */ + +/* + * Got ethtool support? + */ +#ifdef HAVE_LINUX_ETHTOOL_H +#include +#endif + +#ifndef HAVE_SOCKLEN_T +typedef int socklen_t; +#endif + +#ifndef MSG_TRUNC +/* + * This is being compiled on a system that lacks MSG_TRUNC; define it + * with the value it has in the 2.2 and later kernels, so that, on + * those kernels, when we pass it in the flags argument to "recvfrom()" + * we're passing the right value and thus get the MSG_TRUNC behavior + * we want. (We don't get that behavior on 2.0[.x] kernels, because + * they didn't support MSG_TRUNC.) + */ +#define MSG_TRUNC 0x20 +#endif + +#ifndef SOL_PACKET +/* + * This is being compiled on a system that lacks SOL_PACKET; define it + * with the value it has in the 2.2 and later kernels, so that we can + * set promiscuous mode in the good modern way rather than the old + * 2.0-kernel crappy way. + */ +#define SOL_PACKET 263 +#endif + +#define MAX_LINKHEADER_SIZE 256 + +/* + * When capturing on all interfaces we use this as the buffer size. + * Should be bigger then all MTUs that occur in real life. + * 64kB should be enough for now. + */ +#define BIGGER_THAN_ALL_MTUS (64*1024) + +/* + * Prototypes for internal functions and methods. + */ +static void map_arphrd_to_dlt(pcap_t *, int, int); +#ifdef HAVE_PF_PACKET_SOCKETS +static short int map_packet_type_to_sll_type(short int); +#endif +static int pcap_activate_linux(pcap_t *); +static int activate_old(pcap_t *); +static int activate_new(pcap_t *); +static int activate_mmap(pcap_t *, int *); +static int pcap_can_set_rfmon_linux(pcap_t *); +static int pcap_read_linux(pcap_t *, int, pcap_handler, u_char *); +static int pcap_read_packet(pcap_t *, pcap_handler, u_char *); +static int pcap_inject_linux(pcap_t *, const void *, size_t); +static int pcap_stats_linux(pcap_t *, struct pcap_stat *); +static int pcap_setfilter_linux(pcap_t *, struct bpf_program *); +static int pcap_setdirection_linux(pcap_t *, pcap_direction_t); +static void pcap_cleanup_linux(pcap_t *); + +union thdr { + struct tpacket_hdr *h1; + struct tpacket2_hdr *h2; + void *raw; +}; + +#ifdef HAVE_PACKET_RING +#define RING_GET_FRAME(h) (((union thdr **)h->buffer)[h->offset]) + +static void destroy_ring(pcap_t *handle); +static int create_ring(pcap_t *handle, int *status); +static int prepare_tpacket_socket(pcap_t *handle); +static void pcap_cleanup_linux_mmap(pcap_t *); +static int pcap_read_linux_mmap(pcap_t *, int, pcap_handler , u_char *); +static int pcap_setfilter_linux_mmap(pcap_t *, struct bpf_program *); +static int pcap_setnonblock_mmap(pcap_t *p, int nonblock, char *errbuf); +static int pcap_getnonblock_mmap(pcap_t *p, char *errbuf); +static void pcap_oneshot_mmap(u_char *user, const struct pcap_pkthdr *h, + const u_char *bytes); +#endif + +/* + * Wrap some ioctl calls + */ +#ifdef HAVE_PF_PACKET_SOCKETS +static int iface_get_id(int fd, const char *device, char *ebuf); +#endif /* HAVE_PF_PACKET_SOCKETS */ +static int iface_get_mtu(int fd, const char *device, char *ebuf); +static int iface_get_arptype(int fd, const char *device, char *ebuf); +#ifdef HAVE_PF_PACKET_SOCKETS +static int iface_bind(int fd, int ifindex, char *ebuf); +#ifdef IW_MODE_MONITOR +static int has_wext(int sock_fd, const char *device, char *ebuf); +#endif /* IW_MODE_MONITOR */ +static int enter_rfmon_mode(pcap_t *handle, int sock_fd, + const char *device); +#endif /* HAVE_PF_PACKET_SOCKETS */ +static int iface_get_offload(pcap_t *handle); +static int iface_bind_old(int fd, const char *device, char *ebuf); + +#ifdef SO_ATTACH_FILTER +static int fix_program(pcap_t *handle, struct sock_fprog *fcode, + int is_mapped); +static int fix_offset(struct bpf_insn *p); +static int set_kernel_filter(pcap_t *handle, struct sock_fprog *fcode); +static int reset_kernel_filter(pcap_t *handle); + +static struct sock_filter total_insn + = BPF_STMT(BPF_RET | BPF_K, 0); +static struct sock_fprog total_fcode + = { 1, &total_insn }; +#endif /* SO_ATTACH_FILTER */ + +pcap_t * +pcap_create(const char *device, char *ebuf) +{ + pcap_t *handle; + + /* + * A null device name is equivalent to the "any" device. + */ + if (device == NULL) + device = "any"; + +#ifdef HAVE_DAG_API + if (strstr(device, "dag")) { + return dag_create(device, ebuf); + } +#endif /* HAVE_DAG_API */ + +#ifdef HAVE_SEPTEL_API + if (strstr(device, "septel")) { + return septel_create(device, ebuf); + } +#endif /* HAVE_SEPTEL_API */ + +#ifdef HAVE_SNF_API + handle = snf_create(device, ebuf); + if (strstr(device, "snf") || handle != NULL) + return handle; + +#endif /* HAVE_SNF_API */ + +#ifdef PCAP_SUPPORT_BT + if (strstr(device, "bluetooth")) { + return bt_create(device, ebuf); + } +#endif + +#if PCAP_SUPPORT_CANUSB + if (strstr(device, "canusb")) { + return canusb_create(device, ebuf); + } +#endif + +#ifdef PCAP_SUPPORT_CAN + if ((strncmp(device, "can", 3) == 0 && isdigit(device[3])) || + (strncmp(device, "vcan", 4) == 0 && isdigit(device[4]))) { + return can_create(device, ebuf); + } +#endif + +#ifdef PCAP_SUPPORT_USB + if (strstr(device, "usbmon")) { + return usb_create(device, ebuf); + } +#endif + +#ifdef PCAP_SUPPORT_NETFILTER + if (strncmp(device, "nflog", strlen("nflog")) == 0) { + return nflog_create(device, ebuf); + } +#endif + + handle = pcap_create_common(device, ebuf); + if (handle == NULL) + return NULL; + + handle->activate_op = pcap_activate_linux; + handle->can_set_rfmon_op = pcap_can_set_rfmon_linux; +#if defined(HAVE_LINUX_NET_TSTAMP_H) && defined(PACKET_TIMESTAMP) + /* + * We claim that we support: + * + * software time stamps, with no details about their precision; + * hardware time stamps, synced to the host time; + * hardware time stamps, not synced to the host time. + * + * XXX - we can't ask a device whether it supports + * hardware time stamps, so we just claim all devices do. + */ + handle->tstamp_type_count = 3; + handle->tstamp_type_list = malloc(3 * sizeof(u_int)); + if (handle->tstamp_type_list == NULL) { + free(handle); + return NULL; + } + handle->tstamp_type_list[0] = PCAP_TSTAMP_HOST; + handle->tstamp_type_list[1] = PCAP_TSTAMP_ADAPTER; + handle->tstamp_type_list[2] = PCAP_TSTAMP_ADAPTER_UNSYNCED; +#endif + + return handle; +} + +#ifdef HAVE_LIBNL +/* + * If interface {if} is a mac80211 driver, the file + * /sys/class/net/{if}/phy80211 is a symlink to + * /sys/class/ieee80211/{phydev}, for some {phydev}. + * + * On Fedora 9, with a 2.6.26.3-29 kernel, my Zydas stick, at + * least, has a "wmaster0" device and a "wlan0" device; the + * latter is the one with the IP address. Both show up in + * "tcpdump -D" output. Capturing on the wmaster0 device + * captures with 802.11 headers. + * + * airmon-ng searches through /sys/class/net for devices named + * monN, starting with mon0; as soon as one *doesn't* exist, + * it chooses that as the monitor device name. If the "iw" + * command exists, it does "iw dev {if} interface add {monif} + * type monitor", where {monif} is the monitor device. It + * then (sigh) sleeps .1 second, and then configures the + * device up. Otherwise, if /sys/class/ieee80211/{phydev}/add_iface + * is a file, it writes {mondev}, without a newline, to that file, + * and again (sigh) sleeps .1 second, and then iwconfig's that + * device into monitor mode and configures it up. Otherwise, + * you can't do monitor mode. + * + * All these devices are "glued" together by having the + * /sys/class/net/{device}/phy80211 links pointing to the same + * place, so, given a wmaster, wlan, or mon device, you can + * find the other devices by looking for devices with + * the same phy80211 link. + * + * To turn monitor mode off, delete the monitor interface, + * either with "iw dev {monif} interface del" or by sending + * {monif}, with no NL, down /sys/class/ieee80211/{phydev}/remove_iface + * + * Note: if you try to create a monitor device named "monN", and + * there's already a "monN" device, it fails, as least with + * the netlink interface (which is what iw uses), with a return + * value of -ENFILE. (Return values are negative errnos.) We + * could probably use that to find an unused device. + * + * Yes, you can have multiple monitor devices for a given + * physical device. +*/ + +/* + * Is this a mac80211 device? If so, fill in the physical device path and + * return 1; if not, return 0. On an error, fill in handle->errbuf and + * return PCAP_ERROR. + */ +static int +get_mac80211_phydev(pcap_t *handle, const char *device, char *phydev_path, + size_t phydev_max_pathlen) +{ + char *pathstr; + ssize_t bytes_read; + + /* + * Generate the path string for the symlink to the physical device. + */ + if (asprintf(&pathstr, "/sys/class/net/%s/phy80211", device) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: Can't generate path name string for /sys/class/net device", + device); + return PCAP_ERROR; + } + bytes_read = readlink(pathstr, phydev_path, phydev_max_pathlen); + if (bytes_read == -1) { + if (errno == ENOENT || errno == EINVAL) { + /* + * Doesn't exist, or not a symlink; assume that + * means it's not a mac80211 device. + */ + free(pathstr); + return 0; + } + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: Can't readlink %s: %s", device, pathstr, + strerror(errno)); + free(pathstr); + return PCAP_ERROR; + } + free(pathstr); + phydev_path[bytes_read] = '\0'; + return 1; +} + +#ifdef HAVE_LIBNL_2_x +#define get_nl_errmsg nl_geterror +#else +/* libnl 2.x compatibility code */ + +#define nl_sock nl_handle + +static inline struct nl_handle * +nl_socket_alloc(void) +{ + return nl_handle_alloc(); +} + +static inline void +nl_socket_free(struct nl_handle *h) +{ + nl_handle_destroy(h); +} + +#define get_nl_errmsg strerror + +static inline int +__genl_ctrl_alloc_cache(struct nl_handle *h, struct nl_cache **cache) +{ + struct nl_cache *tmp = genl_ctrl_alloc_cache(h); + if (!tmp) + return -ENOMEM; + *cache = tmp; + return 0; +} +#define genl_ctrl_alloc_cache __genl_ctrl_alloc_cache +#endif /* !HAVE_LIBNL_2_x */ + +struct nl80211_state { + struct nl_sock *nl_sock; + struct nl_cache *nl_cache; + struct genl_family *nl80211; +}; + +static int +nl80211_init(pcap_t *handle, struct nl80211_state *state, const char *device) +{ + int err; + + state->nl_sock = nl_socket_alloc(); + if (!state->nl_sock) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: failed to allocate netlink handle", device); + return PCAP_ERROR; + } + + if (genl_connect(state->nl_sock)) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: failed to connect to generic netlink", device); + goto out_handle_destroy; + } + + err = genl_ctrl_alloc_cache(state->nl_sock, &state->nl_cache); + if (err < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: failed to allocate generic netlink cache: %s", + device, get_nl_errmsg(-err)); + goto out_handle_destroy; + } + + state->nl80211 = genl_ctrl_search_by_name(state->nl_cache, "nl80211"); + if (!state->nl80211) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: nl80211 not found", device); + goto out_cache_free; + } + + return 0; + +out_cache_free: + nl_cache_free(state->nl_cache); +out_handle_destroy: + nl_socket_free(state->nl_sock); + return PCAP_ERROR; +} + +static void +nl80211_cleanup(struct nl80211_state *state) +{ + genl_family_put(state->nl80211); + nl_cache_free(state->nl_cache); + nl_socket_free(state->nl_sock); +} + +static int +add_mon_if(pcap_t *handle, int sock_fd, struct nl80211_state *state, + const char *device, const char *mondevice) +{ + int ifindex; + struct nl_msg *msg; + int err; + + ifindex = iface_get_id(sock_fd, device, handle->errbuf); + if (ifindex == -1) + return PCAP_ERROR; + + msg = nlmsg_alloc(); + if (!msg) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: failed to allocate netlink msg", device); + return PCAP_ERROR; + } + + genlmsg_put(msg, 0, 0, genl_family_get_id(state->nl80211), 0, + 0, NL80211_CMD_NEW_INTERFACE, 0); + NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); + NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, mondevice); + NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_MONITOR); + + err = nl_send_auto_complete(state->nl_sock, msg); + if (err < 0) { +#ifdef HAVE_LIBNL_2_x + if (err == -NLE_FAILURE) { +#else + if (err == -ENFILE) { +#endif + /* + * Device not available; our caller should just + * keep trying. (libnl 2.x maps ENFILE to + * NLE_FAILURE; it can also map other errors + * to that, but there's not much we can do + * about that.) + */ + nlmsg_free(msg); + return 0; + } else { + /* + * Real failure, not just "that device is not + * available. + */ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: nl_send_auto_complete failed adding %s interface: %s", + device, mondevice, get_nl_errmsg(-err)); + nlmsg_free(msg); + return PCAP_ERROR; + } + } + err = nl_wait_for_ack(state->nl_sock); + if (err < 0) { +#ifdef HAVE_LIBNL_2_x + if (err == -NLE_FAILURE) { +#else + if (err == -ENFILE) { +#endif + /* + * Device not available; our caller should just + * keep trying. (libnl 2.x maps ENFILE to + * NLE_FAILURE; it can also map other errors + * to that, but there's not much we can do + * about that.) + */ + nlmsg_free(msg); + return 0; + } else { + /* + * Real failure, not just "that device is not + * available. + */ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: nl_wait_for_ack failed adding %s interface: %s", + device, mondevice, get_nl_errmsg(-err)); + nlmsg_free(msg); + return PCAP_ERROR; + } + } + + /* + * Success. + */ + nlmsg_free(msg); + return 1; + +nla_put_failure: + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: nl_put failed adding %s interface", + device, mondevice); + nlmsg_free(msg); + return PCAP_ERROR; +} + +static int +del_mon_if(pcap_t *handle, int sock_fd, struct nl80211_state *state, + const char *device, const char *mondevice) +{ + int ifindex; + struct nl_msg *msg; + int err; + + ifindex = iface_get_id(sock_fd, mondevice, handle->errbuf); + if (ifindex == -1) + return PCAP_ERROR; + + msg = nlmsg_alloc(); + if (!msg) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: failed to allocate netlink msg", device); + return PCAP_ERROR; + } + + genlmsg_put(msg, 0, 0, genl_family_get_id(state->nl80211), 0, + 0, NL80211_CMD_DEL_INTERFACE, 0); + NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); + + err = nl_send_auto_complete(state->nl_sock, msg); + if (err < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: nl_send_auto_complete failed deleting %s interface: %s", + device, mondevice, get_nl_errmsg(-err)); + nlmsg_free(msg); + return PCAP_ERROR; + } + err = nl_wait_for_ack(state->nl_sock); + if (err < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: nl_wait_for_ack failed adding %s interface: %s", + device, mondevice, get_nl_errmsg(-err)); + nlmsg_free(msg); + return PCAP_ERROR; + } + + /* + * Success. + */ + nlmsg_free(msg); + return 1; + +nla_put_failure: + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: nl_put failed deleting %s interface", + device, mondevice); + nlmsg_free(msg); + return PCAP_ERROR; +} + +static int +enter_rfmon_mode_mac80211(pcap_t *handle, int sock_fd, const char *device) +{ + int ret; + char phydev_path[PATH_MAX+1]; + struct nl80211_state nlstate; + struct ifreq ifr; + u_int n; + + /* + * Is this a mac80211 device? + */ + ret = get_mac80211_phydev(handle, device, phydev_path, PATH_MAX); + if (ret < 0) + return ret; /* error */ + if (ret == 0) + return 0; /* no error, but not mac80211 device */ + + /* + * XXX - is this already a monN device? + * If so, we're done. + * Is that determined by old Wireless Extensions ioctls? + */ + + /* + * OK, it's apparently a mac80211 device. + * Try to find an unused monN device for it. + */ + ret = nl80211_init(handle, &nlstate, device); + if (ret != 0) + return ret; + for (n = 0; n < UINT_MAX; n++) { + /* + * Try mon{n}. + */ + char mondevice[3+10+1]; /* mon{UINT_MAX}\0 */ + + snprintf(mondevice, sizeof mondevice, "mon%u", n); + ret = add_mon_if(handle, sock_fd, &nlstate, device, mondevice); + if (ret == 1) { + handle->md.mondevice = strdup(mondevice); + goto added; + } + if (ret < 0) { + /* + * Hard failure. Just return ret; handle->errbuf + * has already been set. + */ + nl80211_cleanup(&nlstate); + return ret; + } + } + + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: No free monN interfaces", device); + nl80211_cleanup(&nlstate); + return PCAP_ERROR; + +added: + +#if 0 + /* + * Sleep for .1 seconds. + */ + delay.tv_sec = 0; + delay.tv_nsec = 500000000; + nanosleep(&delay, NULL); +#endif + + /* + * If we haven't already done so, arrange to have + * "pcap_close_all()" called when we exit. + */ + if (!pcap_do_addexit(handle)) { + /* + * "atexit()" failed; don't put the interface + * in rfmon mode, just give up. + */ + return PCAP_ERROR_RFMON_NOTSUP; + } + + /* + * Now configure the monitor interface up. + */ + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, handle->md.mondevice, sizeof(ifr.ifr_name)); + if (ioctl(sock_fd, SIOCGIFFLAGS, &ifr) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: Can't get flags for %s: %s", device, + handle->md.mondevice, strerror(errno)); + del_mon_if(handle, sock_fd, &nlstate, device, + handle->md.mondevice); + nl80211_cleanup(&nlstate); + return PCAP_ERROR; + } + ifr.ifr_flags |= IFF_UP|IFF_RUNNING; + if (ioctl(sock_fd, SIOCSIFFLAGS, &ifr) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: Can't set flags for %s: %s", device, + handle->md.mondevice, strerror(errno)); + del_mon_if(handle, sock_fd, &nlstate, device, + handle->md.mondevice); + nl80211_cleanup(&nlstate); + return PCAP_ERROR; + } + + /* + * Success. Clean up the libnl state. + */ + nl80211_cleanup(&nlstate); + + /* + * Note that we have to delete the monitor device when we close + * the handle. + */ + handle->md.must_do_on_close |= MUST_DELETE_MONIF; + + /* + * Add this to the list of pcaps to close when we exit. + */ + pcap_add_to_pcaps_to_close(handle); + + return 1; +} +#endif /* HAVE_LIBNL */ + +static int +pcap_can_set_rfmon_linux(pcap_t *handle) +{ +#ifdef HAVE_LIBNL + char phydev_path[PATH_MAX+1]; + int ret; +#endif +#ifdef IW_MODE_MONITOR + int sock_fd; + struct iwreq ireq; +#endif + + if (strcmp(handle->opt.source, "any") == 0) { + /* + * Monitor mode makes no sense on the "any" device. + */ + return 0; + } + +#ifdef HAVE_LIBNL + /* + * Bleah. There doesn't seem to be a way to ask a mac80211 + * device, through libnl, whether it supports monitor mode; + * we'll just check whether the device appears to be a + * mac80211 device and, if so, assume the device supports + * monitor mode. + * + * wmaster devices don't appear to support the Wireless + * Extensions, but we can create a mon device for a + * wmaster device, so we don't bother checking whether + * a mac80211 device supports the Wireless Extensions. + */ + ret = get_mac80211_phydev(handle, handle->opt.source, phydev_path, + PATH_MAX); + if (ret < 0) + return ret; /* error */ + if (ret == 1) + return 1; /* mac80211 device */ +#endif + +#ifdef IW_MODE_MONITOR + /* + * Bleah. There doesn't appear to be an ioctl to use to ask + * whether a device supports monitor mode; we'll just do + * SIOCGIWMODE and, if it succeeds, assume the device supports + * monitor mode. + * + * Open a socket on which to attempt to get the mode. + * (We assume that if we have Wireless Extensions support + * we also have PF_PACKET support.) + */ + sock_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); + if (sock_fd == -1) { + (void)snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "socket: %s", pcap_strerror(errno)); + return PCAP_ERROR; + } + + /* + * Attempt to get the current mode. + */ + strncpy(ireq.ifr_ifrn.ifrn_name, handle->opt.source, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + if (ioctl(sock_fd, SIOCGIWMODE, &ireq) != -1) { + /* + * Well, we got the mode; assume we can set it. + */ + close(sock_fd); + return 1; + } + if (errno == ENODEV) { + /* The device doesn't even exist. */ + (void)snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "SIOCGIWMODE failed: %s", pcap_strerror(errno)); + close(sock_fd); + return PCAP_ERROR_NO_SUCH_DEVICE; + } + close(sock_fd); +#endif + return 0; +} + +/* + * Grabs the number of dropped packets by the interface from /proc/net/dev. + * + * XXX - what about /sys/class/net/{interface name}/rx_*? There are + * individual devices giving, in ASCII, various rx_ and tx_ statistics. + * + * Or can we get them in binary form from netlink? + */ +static long int +linux_if_drops(const char * if_name) +{ + char buffer[512]; + char * bufptr; + FILE * file; + int field_to_convert = 3, if_name_sz = strlen(if_name); + long int dropped_pkts = 0; + + file = fopen("/proc/net/dev", "r"); + if (!file) + return 0; + + while (!dropped_pkts && fgets( buffer, sizeof(buffer), file )) + { + /* search for 'bytes' -- if its in there, then + that means we need to grab the fourth field. otherwise + grab the third field. */ + if (field_to_convert != 4 && strstr(buffer, "bytes")) + { + field_to_convert = 4; + continue; + } + + /* find iface and make sure it actually matches -- space before the name and : after it */ + if ((bufptr = strstr(buffer, if_name)) && + (bufptr == buffer || *(bufptr-1) == ' ') && + *(bufptr + if_name_sz) == ':') + { + bufptr = bufptr + if_name_sz + 1; + + /* grab the nth field from it */ + while( --field_to_convert && *bufptr != '\0') + { + while (*bufptr != '\0' && *(bufptr++) == ' '); + while (*bufptr != '\0' && *(bufptr++) != ' '); + } + + /* get rid of any final spaces */ + while (*bufptr != '\0' && *bufptr == ' ') bufptr++; + + if (*bufptr != '\0') + dropped_pkts = strtol(bufptr, NULL, 10); + + break; + } + } + + fclose(file); + return dropped_pkts; +} + + +/* + * With older kernels promiscuous mode is kind of interesting because we + * have to reset the interface before exiting. The problem can't really + * be solved without some daemon taking care of managing usage counts. + * If we put the interface into promiscuous mode, we set a flag indicating + * that we must take it out of that mode when the interface is closed, + * and, when closing the interface, if that flag is set we take it out + * of promiscuous mode. + * + * Even with newer kernels, we have the same issue with rfmon mode. + */ + +static void pcap_cleanup_linux( pcap_t *handle ) +{ + struct ifreq ifr; +#ifdef HAVE_LIBNL + struct nl80211_state nlstate; + int ret; +#endif /* HAVE_LIBNL */ +#ifdef IW_MODE_MONITOR + int oldflags; + struct iwreq ireq; +#endif /* IW_MODE_MONITOR */ + + if (handle->md.must_do_on_close != 0) { + /* + * There's something we have to do when closing this + * pcap_t. + */ + if (handle->md.must_do_on_close & MUST_CLEAR_PROMISC) { + /* + * We put the interface into promiscuous mode; + * take it out of promiscuous mode. + * + * XXX - if somebody else wants it in promiscuous + * mode, this code cannot know that, so it'll take + * it out of promiscuous mode. That's not fixable + * in 2.0[.x] kernels. + */ + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, handle->md.device, + sizeof(ifr.ifr_name)); + if (ioctl(handle->fd, SIOCGIFFLAGS, &ifr) == -1) { + fprintf(stderr, + "Can't restore interface %s flags (SIOCGIFFLAGS failed: %s).\n" + "Please adjust manually.\n" + "Hint: This can't happen with Linux >= 2.2.0.\n", + handle->md.device, strerror(errno)); + } else { + if (ifr.ifr_flags & IFF_PROMISC) { + /* + * Promiscuous mode is currently on; + * turn it off. + */ + ifr.ifr_flags &= ~IFF_PROMISC; + if (ioctl(handle->fd, SIOCSIFFLAGS, + &ifr) == -1) { + fprintf(stderr, + "Can't restore interface %s flags (SIOCSIFFLAGS failed: %s).\n" + "Please adjust manually.\n" + "Hint: This can't happen with Linux >= 2.2.0.\n", + handle->md.device, + strerror(errno)); + } + } + } + } + +#ifdef HAVE_LIBNL + if (handle->md.must_do_on_close & MUST_DELETE_MONIF) { + ret = nl80211_init(handle, &nlstate, handle->md.device); + if (ret >= 0) { + ret = del_mon_if(handle, handle->fd, &nlstate, + handle->md.device, handle->md.mondevice); + nl80211_cleanup(&nlstate); + } + if (ret < 0) { + fprintf(stderr, + "Can't delete monitor interface %s (%s).\n" + "Please delete manually.\n", + handle->md.mondevice, handle->errbuf); + } + } +#endif /* HAVE_LIBNL */ + +#ifdef IW_MODE_MONITOR + if (handle->md.must_do_on_close & MUST_CLEAR_RFMON) { + /* + * We put the interface into rfmon mode; + * take it out of rfmon mode. + * + * XXX - if somebody else wants it in rfmon + * mode, this code cannot know that, so it'll take + * it out of rfmon mode. + */ + + /* + * First, take the interface down if it's up; + * otherwise, we might get EBUSY. + * If we get errors, just drive on and print + * a warning if we can't restore the mode. + */ + oldflags = 0; + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, handle->md.device, + sizeof(ifr.ifr_name)); + if (ioctl(handle->fd, SIOCGIFFLAGS, &ifr) != -1) { + if (ifr.ifr_flags & IFF_UP) { + oldflags = ifr.ifr_flags; + ifr.ifr_flags &= ~IFF_UP; + if (ioctl(handle->fd, SIOCSIFFLAGS, &ifr) == -1) + oldflags = 0; /* didn't set, don't restore */ + } + } + + /* + * Now restore the mode. + */ + strncpy(ireq.ifr_ifrn.ifrn_name, handle->md.device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] + = 0; + ireq.u.mode = handle->md.oldmode; + if (ioctl(handle->fd, SIOCSIWMODE, &ireq) == -1) { + /* + * Scientist, you've failed. + */ + fprintf(stderr, + "Can't restore interface %s wireless mode (SIOCSIWMODE failed: %s).\n" + "Please adjust manually.\n", + handle->md.device, strerror(errno)); + } + + /* + * Now bring the interface back up if we brought + * it down. + */ + if (oldflags != 0) { + ifr.ifr_flags = oldflags; + if (ioctl(handle->fd, SIOCSIFFLAGS, &ifr) == -1) { + fprintf(stderr, + "Can't bring interface %s back up (SIOCSIFFLAGS failed: %s).\n" + "Please adjust manually.\n", + handle->md.device, strerror(errno)); + } + } + } +#endif /* IW_MODE_MONITOR */ + + /* + * Take this pcap out of the list of pcaps for which we + * have to take the interface out of some mode. + */ + pcap_remove_from_pcaps_to_close(handle); + } + + if (handle->md.mondevice != NULL) { + free(handle->md.mondevice); + handle->md.mondevice = NULL; + } + if (handle->md.device != NULL) { + free(handle->md.device); + handle->md.device = NULL; + } + pcap_cleanup_live_common(handle); +} + +/* + * Get a handle for a live capture from the given device. You can + * pass NULL as device to get all packages (without link level + * information of course). If you pass 1 as promisc the interface + * will be set to promiscous mode (XXX: I think this usage should + * be deprecated and functions be added to select that later allow + * modification of that values -- Torsten). + */ +static int +pcap_activate_linux(pcap_t *handle) +{ + const char *device; + int status = 0; + + device = handle->opt.source; + + handle->inject_op = pcap_inject_linux; + handle->setfilter_op = pcap_setfilter_linux; + handle->setdirection_op = pcap_setdirection_linux; + handle->set_datalink_op = NULL; /* can't change data link type */ + handle->getnonblock_op = pcap_getnonblock_fd; + handle->setnonblock_op = pcap_setnonblock_fd; + handle->cleanup_op = pcap_cleanup_linux; + handle->read_op = pcap_read_linux; + handle->stats_op = pcap_stats_linux; + + /* + * The "any" device is a special device which causes us not + * to bind to a particular device and thus to look at all + * devices. + */ + if (strcmp(device, "any") == 0) { + if (handle->opt.promisc) { + handle->opt.promisc = 0; + /* Just a warning. */ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Promiscuous mode not supported on the \"any\" device"); + status = PCAP_WARNING_PROMISC_NOTSUP; + } + } + + handle->md.device = strdup(device); + if (handle->md.device == NULL) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "strdup: %s", + pcap_strerror(errno) ); + return PCAP_ERROR; + } + + /* + * If we're in promiscuous mode, then we probably want + * to see when the interface drops packets too, so get an + * initial count from /proc/net/dev + */ + if (handle->opt.promisc) + handle->md.proc_dropped = linux_if_drops(handle->md.device); + + /* + * Current Linux kernels use the protocol family PF_PACKET to + * allow direct access to all packets on the network while + * older kernels had a special socket type SOCK_PACKET to + * implement this feature. + * While this old implementation is kind of obsolete we need + * to be compatible with older kernels for a while so we are + * trying both methods with the newer method preferred. + */ + status = activate_new(handle); + if (status < 0) { + /* + * Fatal error with the new way; just fail. + * status has the error return; if it's PCAP_ERROR, + * handle->errbuf has been set appropriately. + */ + goto fail; + } + if (status == 1) { + /* + * Success. + * Try to use memory-mapped access. + */ + switch (activate_mmap(handle, &status)) { + + case 1: + /* + * We succeeded. status has been + * set to the status to return, + * which might be 0, or might be + * a PCAP_WARNING_ value. + */ + return status; + + case 0: + /* + * Kernel doesn't support it - just continue + * with non-memory-mapped access. + */ + break; + + case -1: + /* + * We failed to set up to use it, or the kernel + * supports it, but we failed to enable it. + * status has been set to the error status to + * return and, if it's PCAP_ERROR, handle->errbuf + * contains the error message. + */ + goto fail; + } + } + else if (status == 0) { + /* Non-fatal error; try old way */ + if ((status = activate_old(handle)) != 1) { + /* + * Both methods to open the packet socket failed. + * Tidy up and report our failure (handle->errbuf + * is expected to be set by the functions above). + */ + goto fail; + } + } + + /* + * We set up the socket, but not with memory-mapped access. + */ + status = 0; + if (handle->opt.buffer_size != 0) { + /* + * Set the socket buffer size to the specified value. + */ + if (setsockopt(handle->fd, SOL_SOCKET, SO_RCVBUF, + &handle->opt.buffer_size, + sizeof(handle->opt.buffer_size)) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "SO_RCVBUF: %s", pcap_strerror(errno)); + status = PCAP_ERROR; + goto fail; + } + } + + /* Allocate the buffer */ + + handle->buffer = malloc(handle->bufsize + handle->offset); + if (!handle->buffer) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + status = PCAP_ERROR; + goto fail; + } + + /* + * "handle->fd" is a socket, so "select()" and "poll()" + * should work on it. + */ + handle->selectable_fd = handle->fd; + + return status; + +fail: + pcap_cleanup_linux(handle); + return status; +} + +/* + * Read at most max_packets from the capture stream and call the callback + * for each of them. Returns the number of packets handled or -1 if an + * error occured. + */ +static int +pcap_read_linux(pcap_t *handle, int max_packets, pcap_handler callback, u_char *user) +{ + /* + * Currently, on Linux only one packet is delivered per read, + * so we don't loop. + */ + return pcap_read_packet(handle, callback, user); +} + +/* + * Read a packet from the socket calling the handler provided by + * the user. Returns the number of packets received or -1 if an + * error occured. + */ +static int +pcap_read_packet(pcap_t *handle, pcap_handler callback, u_char *userdata) +{ + u_char *bp; + int offset; +#ifdef HAVE_PF_PACKET_SOCKETS + struct sockaddr_ll from; + struct sll_header *hdrp; +#else + struct sockaddr from; +#endif +#if defined(HAVE_PACKET_AUXDATA) && defined(HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI) + struct iovec iov; + struct msghdr msg; + struct cmsghdr *cmsg; + union { + struct cmsghdr cmsg; + char buf[CMSG_SPACE(sizeof(struct tpacket_auxdata))]; + } cmsg_buf; +#else /* defined(HAVE_PACKET_AUXDATA) && defined(HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI) */ + socklen_t fromlen; +#endif /* defined(HAVE_PACKET_AUXDATA) && defined(HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI) */ + int packet_len, caplen; + struct pcap_pkthdr pcap_header; + +#ifdef HAVE_PF_PACKET_SOCKETS + /* + * If this is a cooked device, leave extra room for a + * fake packet header. + */ + if (handle->md.cooked) + offset = SLL_HDR_LEN; + else + offset = 0; +#else + /* + * This system doesn't have PF_PACKET sockets, so it doesn't + * support cooked devices. + */ + offset = 0; +#endif + + /* + * Receive a single packet from the kernel. + * We ignore EINTR, as that might just be due to a signal + * being delivered - if the signal should interrupt the + * loop, the signal handler should call pcap_breakloop() + * to set handle->break_loop (we ignore it on other + * platforms as well). + * We also ignore ENETDOWN, so that we can continue to + * capture traffic if the interface goes down and comes + * back up again; comments in the kernel indicate that + * we'll just block waiting for packets if we try to + * receive from a socket that delivered ENETDOWN, and, + * if we're using a memory-mapped buffer, we won't even + * get notified of "network down" events. + */ + bp = handle->buffer + handle->offset; + +#if defined(HAVE_PACKET_AUXDATA) && defined(HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI) + msg.msg_name = &from; + msg.msg_namelen = sizeof(from); + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_control = &cmsg_buf; + msg.msg_controllen = sizeof(cmsg_buf); + msg.msg_flags = 0; + + iov.iov_len = handle->bufsize - offset; + iov.iov_base = bp + offset; +#endif /* defined(HAVE_PACKET_AUXDATA) && defined(HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI) */ + + do { + /* + * Has "pcap_breakloop()" been called? + */ + if (handle->break_loop) { + /* + * Yes - clear the flag that indicates that it has, + * and return PCAP_ERROR_BREAK as an indication that + * we were told to break out of the loop. + */ + handle->break_loop = 0; + return PCAP_ERROR_BREAK; + } + +#if defined(HAVE_PACKET_AUXDATA) && defined(HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI) + packet_len = recvmsg(handle->fd, &msg, MSG_TRUNC); +#else /* defined(HAVE_PACKET_AUXDATA) && defined(HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI) */ + fromlen = sizeof(from); + packet_len = recvfrom( + handle->fd, bp + offset, + handle->bufsize - offset, MSG_TRUNC, + (struct sockaddr *) &from, &fromlen); +#endif /* defined(HAVE_PACKET_AUXDATA) && defined(HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI) */ + } while (packet_len == -1 && errno == EINTR); + + /* Check if an error occured */ + + if (packet_len == -1) { + switch (errno) { + + case EAGAIN: + return 0; /* no packet there */ + + case ENETDOWN: + /* + * The device on which we're capturing went away. + * + * XXX - we should really return + * PCAP_ERROR_IFACE_NOT_UP, but pcap_dispatch() + * etc. aren't defined to return that. + */ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "The interface went down"); + return PCAP_ERROR; + + default: + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "recvfrom: %s", pcap_strerror(errno)); + return PCAP_ERROR; + } + } + +#ifdef HAVE_PF_PACKET_SOCKETS + if (!handle->md.sock_packet) { + /* + * Unfortunately, there is a window between socket() and + * bind() where the kernel may queue packets from any + * interface. If we're bound to a particular interface, + * discard packets not from that interface. + * + * (If socket filters are supported, we could do the + * same thing we do when changing the filter; however, + * that won't handle packet sockets without socket + * filter support, and it's a bit more complicated. + * It would save some instructions per packet, however.) + */ + if (handle->md.ifindex != -1 && + from.sll_ifindex != handle->md.ifindex) + return 0; + + /* + * Do checks based on packet direction. + * We can only do this if we're using PF_PACKET; the + * address returned for SOCK_PACKET is a "sockaddr_pkt" + * which lacks the relevant packet type information. + */ + if (from.sll_pkttype == PACKET_OUTGOING) { + /* + * Outgoing packet. + * If this is from the loopback device, reject it; + * we'll see the packet as an incoming packet as well, + * and we don't want to see it twice. + */ + if (from.sll_ifindex == handle->md.lo_ifindex) + return 0; + + /* + * If the user only wants incoming packets, reject it. + */ + if (handle->direction == PCAP_D_IN) + return 0; + } else { + /* + * Incoming packet. + * If the user only wants outgoing packets, reject it. + */ + if (handle->direction == PCAP_D_OUT) + return 0; + } + } +#endif + +#ifdef HAVE_PF_PACKET_SOCKETS + /* + * If this is a cooked device, fill in the fake packet header. + */ + if (handle->md.cooked) { + /* + * Add the length of the fake header to the length + * of packet data we read. + */ + packet_len += SLL_HDR_LEN; + + hdrp = (struct sll_header *)bp; + hdrp->sll_pkttype = map_packet_type_to_sll_type(from.sll_pkttype); + hdrp->sll_hatype = htons(from.sll_hatype); + hdrp->sll_halen = htons(from.sll_halen); + memcpy(hdrp->sll_addr, from.sll_addr, + (from.sll_halen > SLL_ADDRLEN) ? + SLL_ADDRLEN : + from.sll_halen); + hdrp->sll_protocol = from.sll_protocol; + } + +#if defined(HAVE_PACKET_AUXDATA) && defined(HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI) + for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) { + struct tpacket_auxdata *aux; + unsigned int len; + struct vlan_tag *tag; + + if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct tpacket_auxdata)) || + cmsg->cmsg_level != SOL_PACKET || + cmsg->cmsg_type != PACKET_AUXDATA) + continue; + + aux = (struct tpacket_auxdata *)CMSG_DATA(cmsg); + if (aux->tp_vlan_tci == 0) + continue; + + len = packet_len > iov.iov_len ? iov.iov_len : packet_len; + if (len < 2 * ETH_ALEN) + break; + + bp -= VLAN_TAG_LEN; + memmove(bp, bp + VLAN_TAG_LEN, 2 * ETH_ALEN); + + tag = (struct vlan_tag *)(bp + 2 * ETH_ALEN); + tag->vlan_tpid = htons(ETH_P_8021Q); + tag->vlan_tci = htons(aux->tp_vlan_tci); + + packet_len += VLAN_TAG_LEN; + } +#endif /* defined(HAVE_PACKET_AUXDATA) && defined(HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI) */ +#endif /* HAVE_PF_PACKET_SOCKETS */ + + /* + * XXX: According to the kernel source we should get the real + * packet len if calling recvfrom with MSG_TRUNC set. It does + * not seem to work here :(, but it is supported by this code + * anyway. + * To be honest the code RELIES on that feature so this is really + * broken with 2.2.x kernels. + * I spend a day to figure out what's going on and I found out + * that the following is happening: + * + * The packet comes from a random interface and the packet_rcv + * hook is called with a clone of the packet. That code inserts + * the packet into the receive queue of the packet socket. + * If a filter is attached to that socket that filter is run + * first - and there lies the problem. The default filter always + * cuts the packet at the snaplen: + * + * # tcpdump -d + * (000) ret #68 + * + * So the packet filter cuts down the packet. The recvfrom call + * says "hey, it's only 68 bytes, it fits into the buffer" with + * the result that we don't get the real packet length. This + * is valid at least until kernel 2.2.17pre6. + * + * We currently handle this by making a copy of the filter + * program, fixing all "ret" instructions with non-zero + * operands to have an operand of 65535 so that the filter + * doesn't truncate the packet, and supplying that modified + * filter to the kernel. + */ + + caplen = packet_len; + if (caplen > handle->snapshot) + caplen = handle->snapshot; + + /* Run the packet filter if not using kernel filter */ + if (!handle->md.use_bpf && handle->fcode.bf_insns) { + if (bpf_filter(handle->fcode.bf_insns, bp, + packet_len, caplen) == 0) + { + /* rejected by filter */ + return 0; + } + } + + /* Fill in our own header data */ + + if (ioctl(handle->fd, SIOCGSTAMP, &pcap_header.ts) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "SIOCGSTAMP: %s", pcap_strerror(errno)); + return PCAP_ERROR; + } + pcap_header.caplen = caplen; + pcap_header.len = packet_len; + + /* + * Count the packet. + * + * Arguably, we should count them before we check the filter, + * as on many other platforms "ps_recv" counts packets + * handed to the filter rather than packets that passed + * the filter, but if filtering is done in the kernel, we + * can't get a count of packets that passed the filter, + * and that would mean the meaning of "ps_recv" wouldn't + * be the same on all Linux systems. + * + * XXX - it's not the same on all systems in any case; + * ideally, we should have a "get the statistics" call + * that supplies more counts and indicates which of them + * it supplies, so that we supply a count of packets + * handed to the filter only on platforms where that + * information is available. + * + * We count them here even if we can get the packet count + * from the kernel, as we can only determine at run time + * whether we'll be able to get it from the kernel (if + * HAVE_TPACKET_STATS isn't defined, we can't get it from + * the kernel, but if it is defined, the library might + * have been built with a 2.4 or later kernel, but we + * might be running on a 2.2[.x] kernel without Alexey + * Kuznetzov's turbopacket patches, and thus the kernel + * might not be able to supply those statistics). We + * could, I guess, try, when opening the socket, to get + * the statistics, and if we can not increment the count + * here, but it's not clear that always incrementing + * the count is more expensive than always testing a flag + * in memory. + * + * We keep the count in "md.packets_read", and use that for + * "ps_recv" if we can't get the statistics from the kernel. + * We do that because, if we *can* get the statistics from + * the kernel, we use "md.stat.ps_recv" and "md.stat.ps_drop" + * as running counts, as reading the statistics from the + * kernel resets the kernel statistics, and if we directly + * increment "md.stat.ps_recv" here, that means it will + * count packets *twice* on systems where we can get kernel + * statistics - once here, and once in pcap_stats_linux(). + */ + handle->md.packets_read++; + + /* Call the user supplied callback function */ + callback(userdata, &pcap_header, bp); + + return 1; +} + +static int +pcap_inject_linux(pcap_t *handle, const void *buf, size_t size) +{ + int ret; + +#ifdef HAVE_PF_PACKET_SOCKETS + if (!handle->md.sock_packet) { + /* PF_PACKET socket */ + if (handle->md.ifindex == -1) { + /* + * We don't support sending on the "any" device. + */ + strlcpy(handle->errbuf, + "Sending packets isn't supported on the \"any\" device", + PCAP_ERRBUF_SIZE); + return (-1); + } + + if (handle->md.cooked) { + /* + * We don't support sending on the "any" device. + * + * XXX - how do you send on a bound cooked-mode + * socket? + * Is a "sendto()" required there? + */ + strlcpy(handle->errbuf, + "Sending packets isn't supported in cooked mode", + PCAP_ERRBUF_SIZE); + return (-1); + } + } +#endif + + ret = send(handle->fd, buf, size, 0); + if (ret == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "send: %s", + pcap_strerror(errno)); + return (-1); + } + return (ret); +} + +/* + * Get the statistics for the given packet capture handle. + * Reports the number of dropped packets iff the kernel supports + * the PACKET_STATISTICS "getsockopt()" argument (2.4 and later + * kernels, and 2.2[.x] kernels with Alexey Kuznetzov's turbopacket + * patches); otherwise, that information isn't available, and we lie + * and report 0 as the count of dropped packets. + */ +static int +pcap_stats_linux(pcap_t *handle, struct pcap_stat *stats) +{ +#ifdef HAVE_TPACKET_STATS + struct tpacket_stats kstats; + socklen_t len = sizeof (struct tpacket_stats); +#endif + + long if_dropped = 0; + + /* + * To fill in ps_ifdrop, we parse /proc/net/dev for the number + */ + if (handle->opt.promisc) + { + if_dropped = handle->md.proc_dropped; + handle->md.proc_dropped = linux_if_drops(handle->md.device); + handle->md.stat.ps_ifdrop += (handle->md.proc_dropped - if_dropped); + } + +#ifdef HAVE_TPACKET_STATS + /* + * Try to get the packet counts from the kernel. + */ + if (getsockopt(handle->fd, SOL_PACKET, PACKET_STATISTICS, + &kstats, &len) > -1) { + /* + * On systems where the PACKET_STATISTICS "getsockopt()" + * argument is supported on PF_PACKET sockets: + * + * "ps_recv" counts only packets that *passed* the + * filter, not packets that didn't pass the filter. + * This includes packets later dropped because we + * ran out of buffer space. + * + * "ps_drop" counts packets dropped because we ran + * out of buffer space. It doesn't count packets + * dropped by the interface driver. It counts only + * packets that passed the filter. + * + * See above for ps_ifdrop. + * + * Both statistics include packets not yet read from + * the kernel by libpcap, and thus not yet seen by + * the application. + * + * In "linux/net/packet/af_packet.c", at least in the + * 2.4.9 kernel, "tp_packets" is incremented for every + * packet that passes the packet filter *and* is + * successfully queued on the socket; "tp_drops" is + * incremented for every packet dropped because there's + * not enough free space in the socket buffer. + * + * When the statistics are returned for a PACKET_STATISTICS + * "getsockopt()" call, "tp_drops" is added to "tp_packets", + * so that "tp_packets" counts all packets handed to + * the PF_PACKET socket, including packets dropped because + * there wasn't room on the socket buffer - but not + * including packets that didn't pass the filter. + * + * In the BSD BPF, the count of received packets is + * incremented for every packet handed to BPF, regardless + * of whether it passed the filter. + * + * We can't make "pcap_stats()" work the same on both + * platforms, but the best approximation is to return + * "tp_packets" as the count of packets and "tp_drops" + * as the count of drops. + * + * Keep a running total because each call to + * getsockopt(handle->fd, SOL_PACKET, PACKET_STATISTICS, .... + * resets the counters to zero. + */ + handle->md.stat.ps_recv += kstats.tp_packets; + handle->md.stat.ps_drop += kstats.tp_drops; + *stats = handle->md.stat; + return 0; + } + else + { + /* + * If the error was EOPNOTSUPP, fall through, so that + * if you build the library on a system with + * "struct tpacket_stats" and run it on a system + * that doesn't, it works as it does if the library + * is built on a system without "struct tpacket_stats". + */ + if (errno != EOPNOTSUPP) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "pcap_stats: %s", pcap_strerror(errno)); + return -1; + } + } +#endif + /* + * On systems where the PACKET_STATISTICS "getsockopt()" argument + * is not supported on PF_PACKET sockets: + * + * "ps_recv" counts only packets that *passed* the filter, + * not packets that didn't pass the filter. It does not + * count packets dropped because we ran out of buffer + * space. + * + * "ps_drop" is not supported. + * + * "ps_ifdrop" is supported. It will return the number + * of drops the interface reports in /proc/net/dev, + * if that is available. + * + * "ps_recv" doesn't include packets not yet read from + * the kernel by libpcap. + * + * We maintain the count of packets processed by libpcap in + * "md.packets_read", for reasons described in the comment + * at the end of pcap_read_packet(). We have no idea how many + * packets were dropped by the kernel buffers -- but we know + * how many the interface dropped, so we can return that. + */ + + stats->ps_recv = handle->md.packets_read; + stats->ps_drop = 0; + stats->ps_ifdrop = handle->md.stat.ps_ifdrop; + return 0; +} + +/* + * Get from "/sys/class/net" all interfaces listed there; if they're + * already in the list of interfaces we have, that won't add another + * instance, but if they're not, that'll add them. + * + * We don't bother getting any addresses for them; it appears you can't + * use SIOCGIFADDR on Linux to get IPv6 addresses for interfaces, and, + * although some other types of addresses can be fetched with SIOCGIFADDR, + * we don't bother with them for now. + * + * We also don't fail if we couldn't open "/sys/class/net"; we just leave + * the list of interfaces as is, and return 0, so that we can try + * scanning /proc/net/dev. + */ +static int +scan_sys_class_net(pcap_if_t **devlistp, char *errbuf) +{ + DIR *sys_class_net_d; + int fd; + struct dirent *ent; + char *p; + char name[512]; /* XXX - pick a size */ + char *q, *saveq; + struct ifreq ifrflags; + int ret = 1; + + sys_class_net_d = opendir("/sys/class/net"); + if (sys_class_net_d == NULL) { + /* + * Don't fail if it doesn't exist at all. + */ + if (errno == ENOENT) + return (0); + + /* + * Fail if we got some other error. + */ + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "Can't open /sys/class/net: %s", pcap_strerror(errno)); + return (-1); + } + + /* + * Create a socket from which to fetch interface information. + */ + fd = socket(AF_INET, SOCK_DGRAM, 0); + if (fd < 0) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "socket: %s", pcap_strerror(errno)); + (void)closedir(sys_class_net_d); + return (-1); + } + + for (;;) { + errno = 0; + ent = readdir(sys_class_net_d); + if (ent == NULL) { + /* + * Error or EOF; if errno != 0, it's an error. + */ + break; + } + + /* + * Ignore directories (".", "..", and any subdirectories). + */ + if (ent->d_type == DT_DIR) + continue; + + /* + * Get the interface name. + */ + p = &ent->d_name[0]; + q = &name[0]; + while (*p != '\0' && isascii(*p) && !isspace(*p)) { + if (*p == ':') { + /* + * This could be the separator between a + * name and an alias number, or it could be + * the separator between a name with no + * alias number and the next field. + * + * If there's a colon after digits, it + * separates the name and the alias number, + * otherwise it separates the name and the + * next field. + */ + saveq = q; + while (isascii(*p) && isdigit(*p)) + *q++ = *p++; + if (*p != ':') { + /* + * That was the next field, + * not the alias number. + */ + q = saveq; + } + break; + } else + *q++ = *p++; + } + *q = '\0'; + + /* + * Get the flags for this interface, and skip it if + * it's not up. + */ + strncpy(ifrflags.ifr_name, name, sizeof(ifrflags.ifr_name)); + if (ioctl(fd, SIOCGIFFLAGS, (char *)&ifrflags) < 0) { + if (errno == ENXIO || errno == ENODEV) + continue; + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGIFFLAGS: %.*s: %s", + (int)sizeof(ifrflags.ifr_name), + ifrflags.ifr_name, + pcap_strerror(errno)); + ret = -1; + break; + } + if (!(ifrflags.ifr_flags & IFF_UP)) + continue; + + /* + * Add an entry for this interface, with no addresses. + */ + if (pcap_add_if(devlistp, name, ifrflags.ifr_flags, NULL, + errbuf) == -1) { + /* + * Failure. + */ + ret = -1; + break; + } + } + if (ret != -1) { + /* + * Well, we didn't fail for any other reason; did we + * fail due to an error reading the directory? + */ + if (errno != 0) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "Error reading /sys/class/net: %s", + pcap_strerror(errno)); + ret = -1; + } + } + + (void)close(fd); + (void)closedir(sys_class_net_d); + return (ret); +} + +/* + * Get from "/proc/net/dev" all interfaces listed there; if they're + * already in the list of interfaces we have, that won't add another + * instance, but if they're not, that'll add them. + * + * See comments from scan_sys_class_net(). + */ +static int +scan_proc_net_dev(pcap_if_t **devlistp, char *errbuf) +{ + FILE *proc_net_f; + int fd; + char linebuf[512]; + int linenum; + char *p; + char name[512]; /* XXX - pick a size */ + char *q, *saveq; + struct ifreq ifrflags; + int ret = 0; + + proc_net_f = fopen("/proc/net/dev", "r"); + if (proc_net_f == NULL) { + /* + * Don't fail if it doesn't exist at all. + */ + if (errno == ENOENT) + return (0); + + /* + * Fail if we got some other error. + */ + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "Can't open /proc/net/dev: %s", pcap_strerror(errno)); + return (-1); + } + + /* + * Create a socket from which to fetch interface information. + */ + fd = socket(AF_INET, SOCK_DGRAM, 0); + if (fd < 0) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "socket: %s", pcap_strerror(errno)); + (void)fclose(proc_net_f); + return (-1); + } + + for (linenum = 1; + fgets(linebuf, sizeof linebuf, proc_net_f) != NULL; linenum++) { + /* + * Skip the first two lines - they're headers. + */ + if (linenum <= 2) + continue; + + p = &linebuf[0]; + + /* + * Skip leading white space. + */ + while (*p != '\0' && isascii(*p) && isspace(*p)) + p++; + if (*p == '\0' || *p == '\n') + continue; /* blank line */ + + /* + * Get the interface name. + */ + q = &name[0]; + while (*p != '\0' && isascii(*p) && !isspace(*p)) { + if (*p == ':') { + /* + * This could be the separator between a + * name and an alias number, or it could be + * the separator between a name with no + * alias number and the next field. + * + * If there's a colon after digits, it + * separates the name and the alias number, + * otherwise it separates the name and the + * next field. + */ + saveq = q; + while (isascii(*p) && isdigit(*p)) + *q++ = *p++; + if (*p != ':') { + /* + * That was the next field, + * not the alias number. + */ + q = saveq; + } + break; + } else + *q++ = *p++; + } + *q = '\0'; + + /* + * Get the flags for this interface, and skip it if + * it's not up. + */ + strncpy(ifrflags.ifr_name, name, sizeof(ifrflags.ifr_name)); + if (ioctl(fd, SIOCGIFFLAGS, (char *)&ifrflags) < 0) { + if (errno == ENXIO) + continue; + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "SIOCGIFFLAGS: %.*s: %s", + (int)sizeof(ifrflags.ifr_name), + ifrflags.ifr_name, + pcap_strerror(errno)); + ret = -1; + break; + } + if (!(ifrflags.ifr_flags & IFF_UP)) + continue; + + /* + * Add an entry for this interface, with no addresses. + */ + if (pcap_add_if(devlistp, name, ifrflags.ifr_flags, NULL, + errbuf) == -1) { + /* + * Failure. + */ + ret = -1; + break; + } + } + if (ret != -1) { + /* + * Well, we didn't fail for any other reason; did we + * fail due to an error reading the file? + */ + if (ferror(proc_net_f)) { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "Error reading /proc/net/dev: %s", + pcap_strerror(errno)); + ret = -1; + } + } + + (void)close(fd); + (void)fclose(proc_net_f); + return (ret); +} + +/* + * Description string for the "any" device. + */ +static const char any_descr[] = "Pseudo-device that captures on all interfaces"; + +int +pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf) +{ + int ret; + + /* + * Read "/sys/class/net", and add to the list of interfaces all + * interfaces listed there that we don't already have, because, + * on Linux, SIOCGIFCONF reports only interfaces with IPv4 addresses, + * and even getifaddrs() won't return information about + * interfaces with no addresses, so you need to read "/sys/class/net" + * to get the names of the rest of the interfaces. + */ + ret = scan_sys_class_net(alldevsp, errbuf); + if (ret == -1) + return (-1); /* failed */ + if (ret == 0) { + /* + * No /sys/class/net; try reading /proc/net/dev instead. + */ + if (scan_proc_net_dev(alldevsp, errbuf) == -1) + return (-1); + } + + /* + * Add the "any" device. + */ + if (pcap_add_if(alldevsp, "any", 0, any_descr, errbuf) < 0) + return (-1); + +#ifdef HAVE_DAG_API + /* + * Add DAG devices. + */ + if (dag_platform_finddevs(alldevsp, errbuf) < 0) + return (-1); +#endif /* HAVE_DAG_API */ + +#ifdef HAVE_SEPTEL_API + /* + * Add Septel devices. + */ + if (septel_platform_finddevs(alldevsp, errbuf) < 0) + return (-1); +#endif /* HAVE_SEPTEL_API */ + +#ifdef HAVE_SNF_API + if (snf_platform_finddevs(alldevsp, errbuf) < 0) + return (-1); +#endif /* HAVE_SNF_API */ + +#ifdef PCAP_SUPPORT_BT + /* + * Add Bluetooth devices. + */ + if (bt_platform_finddevs(alldevsp, errbuf) < 0) + return (-1); +#endif + +#ifdef PCAP_SUPPORT_USB + /* + * Add USB devices. + */ + if (usb_platform_finddevs(alldevsp, errbuf) < 0) + return (-1); +#endif + +#ifdef PCAP_SUPPORT_NETFILTER + /* + * Add netfilter devices. + */ + if (netfilter_platform_finddevs(alldevsp, errbuf) < 0) + return (-1); +#endif + +#if PCAP_SUPPORT_CANUSB + if (canusb_platform_finddevs(alldevsp, errbuf) < 0) + return (-1); +#endif + + return (0); +} + +/* + * Attach the given BPF code to the packet capture device. + */ +static int +pcap_setfilter_linux_common(pcap_t *handle, struct bpf_program *filter, + int is_mmapped) +{ +#ifdef SO_ATTACH_FILTER + struct sock_fprog fcode; + int can_filter_in_kernel; + int err = 0; +#endif + + if (!handle) + return -1; + if (!filter) { + strncpy(handle->errbuf, "setfilter: No filter specified", + PCAP_ERRBUF_SIZE); + return -1; + } + + /* Make our private copy of the filter */ + + if (install_bpf_program(handle, filter) < 0) + /* install_bpf_program() filled in errbuf */ + return -1; + + /* + * Run user level packet filter by default. Will be overriden if + * installing a kernel filter succeeds. + */ + handle->md.use_bpf = 0; + + /* Install kernel level filter if possible */ + +#ifdef SO_ATTACH_FILTER +#ifdef USHRT_MAX + if (handle->fcode.bf_len > USHRT_MAX) { + /* + * fcode.len is an unsigned short for current kernel. + * I have yet to see BPF-Code with that much + * instructions but still it is possible. So for the + * sake of correctness I added this check. + */ + fprintf(stderr, "Warning: Filter too complex for kernel\n"); + fcode.len = 0; + fcode.filter = NULL; + can_filter_in_kernel = 0; + } else +#endif /* USHRT_MAX */ + { + /* + * Oh joy, the Linux kernel uses struct sock_fprog instead + * of struct bpf_program and of course the length field is + * of different size. Pointed out by Sebastian + * + * Oh, and we also need to fix it up so that all "ret" + * instructions with non-zero operands have 65535 as the + * operand if we're not capturing in memory-mapped modee, + * and so that, if we're in cooked mode, all memory-reference + * instructions use special magic offsets in references to + * the link-layer header and assume that the link-layer + * payload begins at 0; "fix_program()" will do that. + */ + switch (fix_program(handle, &fcode, is_mmapped)) { + + case -1: + default: + /* + * Fatal error; just quit. + * (The "default" case shouldn't happen; we + * return -1 for that reason.) + */ + return -1; + + case 0: + /* + * The program performed checks that we can't make + * work in the kernel. + */ + can_filter_in_kernel = 0; + break; + + case 1: + /* + * We have a filter that'll work in the kernel. + */ + can_filter_in_kernel = 1; + break; + } + } + + /* + * NOTE: at this point, we've set both the "len" and "filter" + * fields of "fcode". As of the 2.6.32.4 kernel, at least, + * those are the only members of the "sock_fprog" structure, + * so we initialize every member of that structure. + * + * If there is anything in "fcode" that is not initialized, + * it is either a field added in a later kernel, or it's + * padding. + * + * If a new field is added, this code needs to be updated + * to set it correctly. + * + * If there are no other fields, then: + * + * if the Linux kernel looks at the padding, it's + * buggy; + * + * if the Linux kernel doesn't look at the padding, + * then if some tool complains that we're passing + * uninitialized data to the kernel, then the tool + * is buggy and needs to understand that it's just + * padding. + */ + if (can_filter_in_kernel) { + if ((err = set_kernel_filter(handle, &fcode)) == 0) + { + /* Installation succeded - using kernel filter. */ + handle->md.use_bpf = 1; + } + else if (err == -1) /* Non-fatal error */ + { + /* + * Print a warning if we weren't able to install + * the filter for a reason other than "this kernel + * isn't configured to support socket filters. + */ + if (errno != ENOPROTOOPT && errno != EOPNOTSUPP) { + fprintf(stderr, + "Warning: Kernel filter failed: %s\n", + pcap_strerror(errno)); + } + } + } + + /* + * If we're not using the kernel filter, get rid of any kernel + * filter that might've been there before, e.g. because the + * previous filter could work in the kernel, or because some other + * code attached a filter to the socket by some means other than + * calling "pcap_setfilter()". Otherwise, the kernel filter may + * filter out packets that would pass the new userland filter. + */ + if (!handle->md.use_bpf) + reset_kernel_filter(handle); + + /* + * Free up the copy of the filter that was made by "fix_program()". + */ + if (fcode.filter != NULL) + free(fcode.filter); + + if (err == -2) + /* Fatal error */ + return -1; +#endif /* SO_ATTACH_FILTER */ + + return 0; +} + +static int +pcap_setfilter_linux(pcap_t *handle, struct bpf_program *filter) +{ + return pcap_setfilter_linux_common(handle, filter, 0); +} + + +/* + * Set direction flag: Which packets do we accept on a forwarding + * single device? IN, OUT or both? + */ +static int +pcap_setdirection_linux(pcap_t *handle, pcap_direction_t d) +{ +#ifdef HAVE_PF_PACKET_SOCKETS + if (!handle->md.sock_packet) { + handle->direction = d; + return 0; + } +#endif + /* + * We're not using PF_PACKET sockets, so we can't determine + * the direction of the packet. + */ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Setting direction is not supported on SOCK_PACKET sockets"); + return -1; +} + +#ifdef HAVE_PF_PACKET_SOCKETS +/* + * Map the PACKET_ value to a LINUX_SLL_ value; we + * want the same numerical value to be used in + * the link-layer header even if the numerical values + * for the PACKET_ #defines change, so that programs + * that look at the packet type field will always be + * able to handle DLT_LINUX_SLL captures. + */ +static short int +map_packet_type_to_sll_type(short int sll_pkttype) +{ + switch (sll_pkttype) { + + case PACKET_HOST: + return htons(LINUX_SLL_HOST); + + case PACKET_BROADCAST: + return htons(LINUX_SLL_BROADCAST); + + case PACKET_MULTICAST: + return htons(LINUX_SLL_MULTICAST); + + case PACKET_OTHERHOST: + return htons(LINUX_SLL_OTHERHOST); + + case PACKET_OUTGOING: + return htons(LINUX_SLL_OUTGOING); + + default: + return -1; + } +} +#endif + +/* + * Linux uses the ARP hardware type to identify the type of an + * interface. pcap uses the DLT_xxx constants for this. This + * function takes a pointer to a "pcap_t", and an ARPHRD_xxx + * constant, as arguments, and sets "handle->linktype" to the + * appropriate DLT_XXX constant and sets "handle->offset" to + * the appropriate value (to make "handle->offset" plus link-layer + * header length be a multiple of 4, so that the link-layer payload + * will be aligned on a 4-byte boundary when capturing packets). + * (If the offset isn't set here, it'll be 0; add code as appropriate + * for cases where it shouldn't be 0.) + * + * If "cooked_ok" is non-zero, we can use DLT_LINUX_SLL and capture + * in cooked mode; otherwise, we can't use cooked mode, so we have + * to pick some type that works in raw mode, or fail. + * + * Sets the link type to -1 if unable to map the type. + */ +static void map_arphrd_to_dlt(pcap_t *handle, int arptype, int cooked_ok) +{ + switch (arptype) { + + case ARPHRD_ETHER: + /* + * This is (presumably) a real Ethernet capture; give it a + * link-layer-type list with DLT_EN10MB and DLT_DOCSIS, so + * that an application can let you choose it, in case you're + * capturing DOCSIS traffic that a Cisco Cable Modem + * Termination System is putting out onto an Ethernet (it + * doesn't put an Ethernet header onto the wire, it puts raw + * DOCSIS frames out on the wire inside the low-level + * Ethernet framing). + * + * XXX - are there any sorts of "fake Ethernet" that have + * ARPHRD_ETHER but that *shouldn't offer DLT_DOCSIS as + * a Cisco CMTS won't put traffic onto it or get traffic + * bridged onto it? ISDN is handled in "activate_new()", + * as we fall back on cooked mode there; are there any + * others? + */ + handle->dlt_list = (u_int *) malloc(sizeof(u_int) * 2); + /* + * If that fails, just leave the list empty. + */ + if (handle->dlt_list != NULL) { + handle->dlt_list[0] = DLT_EN10MB; + handle->dlt_list[1] = DLT_DOCSIS; + handle->dlt_count = 2; + } + /* FALLTHROUGH */ + + case ARPHRD_METRICOM: + case ARPHRD_LOOPBACK: + handle->linktype = DLT_EN10MB; + handle->offset = 2; + break; + + case ARPHRD_EETHER: + handle->linktype = DLT_EN3MB; + break; + + case ARPHRD_AX25: + handle->linktype = DLT_AX25_KISS; + break; + + case ARPHRD_PRONET: + handle->linktype = DLT_PRONET; + break; + + case ARPHRD_CHAOS: + handle->linktype = DLT_CHAOS; + break; +#ifndef ARPHRD_CAN +#define ARPHRD_CAN 280 +#endif + case ARPHRD_CAN: + handle->linktype = DLT_CAN_SOCKETCAN; + break; + +#ifndef ARPHRD_IEEE802_TR +#define ARPHRD_IEEE802_TR 800 /* From Linux 2.4 */ +#endif + case ARPHRD_IEEE802_TR: + case ARPHRD_IEEE802: + handle->linktype = DLT_IEEE802; + handle->offset = 2; + break; + + case ARPHRD_ARCNET: + handle->linktype = DLT_ARCNET_LINUX; + break; + +#ifndef ARPHRD_FDDI /* From Linux 2.2.13 */ +#define ARPHRD_FDDI 774 +#endif + case ARPHRD_FDDI: + handle->linktype = DLT_FDDI; + handle->offset = 3; + break; + +#ifndef ARPHRD_ATM /* FIXME: How to #include this? */ +#define ARPHRD_ATM 19 +#endif + case ARPHRD_ATM: + /* + * The Classical IP implementation in ATM for Linux + * supports both what RFC 1483 calls "LLC Encapsulation", + * in which each packet has an LLC header, possibly + * with a SNAP header as well, prepended to it, and + * what RFC 1483 calls "VC Based Multiplexing", in which + * different virtual circuits carry different network + * layer protocols, and no header is prepended to packets. + * + * They both have an ARPHRD_ type of ARPHRD_ATM, so + * you can't use the ARPHRD_ type to find out whether + * captured packets will have an LLC header, and, + * while there's a socket ioctl to *set* the encapsulation + * type, there's no ioctl to *get* the encapsulation type. + * + * This means that + * + * programs that dissect Linux Classical IP frames + * would have to check for an LLC header and, + * depending on whether they see one or not, dissect + * the frame as LLC-encapsulated or as raw IP (I + * don't know whether there's any traffic other than + * IP that would show up on the socket, or whether + * there's any support for IPv6 in the Linux + * Classical IP code); + * + * filter expressions would have to compile into + * code that checks for an LLC header and does + * the right thing. + * + * Both of those are a nuisance - and, at least on systems + * that support PF_PACKET sockets, we don't have to put + * up with those nuisances; instead, we can just capture + * in cooked mode. That's what we'll do, if we can. + * Otherwise, we'll just fail. + */ + if (cooked_ok) + handle->linktype = DLT_LINUX_SLL; + else + handle->linktype = -1; + break; + +#ifndef ARPHRD_IEEE80211 /* From Linux 2.4.6 */ +#define ARPHRD_IEEE80211 801 +#endif + case ARPHRD_IEEE80211: + handle->linktype = DLT_IEEE802_11; + break; + +#ifndef ARPHRD_IEEE80211_PRISM /* From Linux 2.4.18 */ +#define ARPHRD_IEEE80211_PRISM 802 +#endif + case ARPHRD_IEEE80211_PRISM: + handle->linktype = DLT_PRISM_HEADER; + break; + +#ifndef ARPHRD_IEEE80211_RADIOTAP /* new */ +#define ARPHRD_IEEE80211_RADIOTAP 803 +#endif + case ARPHRD_IEEE80211_RADIOTAP: + handle->linktype = DLT_IEEE802_11_RADIO; + break; + + case ARPHRD_PPP: + /* + * Some PPP code in the kernel supplies no link-layer + * header whatsoever to PF_PACKET sockets; other PPP + * code supplies PPP link-layer headers ("syncppp.c"); + * some PPP code might supply random link-layer + * headers (PPP over ISDN - there's code in Ethereal, + * for example, to cope with PPP-over-ISDN captures + * with which the Ethereal developers have had to cope, + * heuristically trying to determine which of the + * oddball link-layer headers particular packets have). + * + * As such, we just punt, and run all PPP interfaces + * in cooked mode, if we can; otherwise, we just treat + * it as DLT_RAW, for now - if somebody needs to capture, + * on a 2.0[.x] kernel, on PPP devices that supply a + * link-layer header, they'll have to add code here to + * map to the appropriate DLT_ type (possibly adding a + * new DLT_ type, if necessary). + */ + if (cooked_ok) + handle->linktype = DLT_LINUX_SLL; + else { + /* + * XXX - handle ISDN types here? We can't fall + * back on cooked sockets, so we'd have to + * figure out from the device name what type of + * link-layer encapsulation it's using, and map + * that to an appropriate DLT_ value, meaning + * we'd map "isdnN" devices to DLT_RAW (they + * supply raw IP packets with no link-layer + * header) and "isdY" devices to a new DLT_I4L_IP + * type that has only an Ethernet packet type as + * a link-layer header. + * + * But sometimes we seem to get random crap + * in the link-layer header when capturing on + * ISDN devices.... + */ + handle->linktype = DLT_RAW; + } + break; + +#ifndef ARPHRD_CISCO +#define ARPHRD_CISCO 513 /* previously ARPHRD_HDLC */ +#endif + case ARPHRD_CISCO: + handle->linktype = DLT_C_HDLC; + break; + + /* Not sure if this is correct for all tunnels, but it + * works for CIPE */ + case ARPHRD_TUNNEL: +#ifndef ARPHRD_SIT +#define ARPHRD_SIT 776 /* From Linux 2.2.13 */ +#endif + case ARPHRD_SIT: + case ARPHRD_CSLIP: + case ARPHRD_SLIP6: + case ARPHRD_CSLIP6: + case ARPHRD_ADAPT: + case ARPHRD_SLIP: +#ifndef ARPHRD_RAWHDLC +#define ARPHRD_RAWHDLC 518 +#endif + case ARPHRD_RAWHDLC: +#ifndef ARPHRD_DLCI +#define ARPHRD_DLCI 15 +#endif + case ARPHRD_DLCI: + /* + * XXX - should some of those be mapped to DLT_LINUX_SLL + * instead? Should we just map all of them to DLT_LINUX_SLL? + */ + handle->linktype = DLT_RAW; + break; + +#ifndef ARPHRD_FRAD +#define ARPHRD_FRAD 770 +#endif + case ARPHRD_FRAD: + handle->linktype = DLT_FRELAY; + break; + + case ARPHRD_LOCALTLK: + handle->linktype = DLT_LTALK; + break; + +#ifndef ARPHRD_FCPP +#define ARPHRD_FCPP 784 +#endif + case ARPHRD_FCPP: +#ifndef ARPHRD_FCAL +#define ARPHRD_FCAL 785 +#endif + case ARPHRD_FCAL: +#ifndef ARPHRD_FCPL +#define ARPHRD_FCPL 786 +#endif + case ARPHRD_FCPL: +#ifndef ARPHRD_FCFABRIC +#define ARPHRD_FCFABRIC 787 +#endif + case ARPHRD_FCFABRIC: + /* + * We assume that those all mean RFC 2625 IP-over- + * Fibre Channel, with the RFC 2625 header at + * the beginning of the packet. + */ + handle->linktype = DLT_IP_OVER_FC; + break; + +#ifndef ARPHRD_IRDA +#define ARPHRD_IRDA 783 +#endif + case ARPHRD_IRDA: + /* Don't expect IP packet out of this interfaces... */ + handle->linktype = DLT_LINUX_IRDA; + /* We need to save packet direction for IrDA decoding, + * so let's use "Linux-cooked" mode. Jean II */ + //handle->md.cooked = 1; + break; + + /* ARPHRD_LAPD is unofficial and randomly allocated, if reallocation + * is needed, please report it to */ +#ifndef ARPHRD_LAPD +#define ARPHRD_LAPD 8445 +#endif + case ARPHRD_LAPD: + /* Don't expect IP packet out of this interfaces... */ + handle->linktype = DLT_LINUX_LAPD; + break; + +#ifndef ARPHRD_NONE +#define ARPHRD_NONE 0xFFFE +#endif + case ARPHRD_NONE: + /* + * No link-layer header; packets are just IP + * packets, so use DLT_RAW. + */ + handle->linktype = DLT_RAW; + break; + +#ifndef ARPHRD_IEEE802154 +#define ARPHRD_IEEE802154 804 +#endif + case ARPHRD_IEEE802154: + handle->linktype = DLT_IEEE802_15_4_NOFCS; + break; + + default: + handle->linktype = -1; + break; + } +} + +/* ===== Functions to interface to the newer kernels ================== */ + +/* + * Try to open a packet socket using the new kernel PF_PACKET interface. + * Returns 1 on success, 0 on an error that means the new interface isn't + * present (so the old SOCK_PACKET interface should be tried), and a + * PCAP_ERROR_ value on an error that means that the old mechanism won't + * work either (so it shouldn't be tried). + */ +static int +activate_new(pcap_t *handle) +{ +#ifdef HAVE_PF_PACKET_SOCKETS + const char *device = handle->opt.source; + int is_any_device = (strcmp(device, "any") == 0); + int sock_fd = -1, arptype; +#ifdef HAVE_PACKET_AUXDATA + int val; +#endif + int err = 0; + struct packet_mreq mr; + + /* + * Open a socket with protocol family packet. If the + * "any" device was specified, we open a SOCK_DGRAM + * socket for the cooked interface, otherwise we first + * try a SOCK_RAW socket for the raw interface. + */ + sock_fd = is_any_device ? + socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_ALL)) : + socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); + + if (sock_fd == -1) { + if (errno == EINVAL || errno == EAFNOSUPPORT) { + /* + * We don't support PF_PACKET/SOCK_whatever + * sockets; try the old mechanism. + */ + return 0; + } + + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "socket: %s", + pcap_strerror(errno) ); + if (errno == EPERM || errno == EACCES) { + /* + * You don't have permission to open the + * socket. + */ + return PCAP_ERROR_PERM_DENIED; + } else { + /* + * Other error. + */ + return PCAP_ERROR; + } + } + + /* It seems the kernel supports the new interface. */ + handle->md.sock_packet = 0; + + /* + * Get the interface index of the loopback device. + * If the attempt fails, don't fail, just set the + * "md.lo_ifindex" to -1. + * + * XXX - can there be more than one device that loops + * packets back, i.e. devices other than "lo"? If so, + * we'd need to find them all, and have an array of + * indices for them, and check all of them in + * "pcap_read_packet()". + */ + handle->md.lo_ifindex = iface_get_id(sock_fd, "lo", handle->errbuf); + + /* + * Default value for offset to align link-layer payload + * on a 4-byte boundary. + */ + handle->offset = 0; + + /* + * What kind of frames do we have to deal with? Fall back + * to cooked mode if we have an unknown interface type + * or a type we know doesn't work well in raw mode. + */ + if (!is_any_device) { + /* Assume for now we don't need cooked mode. */ + handle->md.cooked = 0; + + if (handle->opt.rfmon) { + /* + * We were asked to turn on monitor mode. + * Do so before we get the link-layer type, + * because entering monitor mode could change + * the link-layer type. + */ + err = enter_rfmon_mode(handle, sock_fd, device); + if (err < 0) { + /* Hard failure */ + close(sock_fd); + return err; + } + if (err == 0) { + /* + * Nothing worked for turning monitor mode + * on. + */ + close(sock_fd); + return PCAP_ERROR_RFMON_NOTSUP; + } + + /* + * Either monitor mode has been turned on for + * the device, or we've been given a different + * device to open for monitor mode. If we've + * been given a different device, use it. + */ + if (handle->md.mondevice != NULL) + device = handle->md.mondevice; + } + arptype = iface_get_arptype(sock_fd, device, handle->errbuf); + if (arptype < 0) { + close(sock_fd); + return arptype; + } + map_arphrd_to_dlt(handle, arptype, 1); + if (handle->linktype == -1 || + handle->linktype == DLT_LINUX_SLL || + handle->linktype == DLT_LINUX_IRDA || + handle->linktype == DLT_LINUX_LAPD || + (handle->linktype == DLT_EN10MB && + (strncmp("isdn", device, 4) == 0 || + strncmp("isdY", device, 4) == 0))) { + /* + * Unknown interface type (-1), or a + * device we explicitly chose to run + * in cooked mode (e.g., PPP devices), + * or an ISDN device (whose link-layer + * type we can only determine by using + * APIs that may be different on different + * kernels) - reopen in cooked mode. + */ + if (close(sock_fd) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "close: %s", pcap_strerror(errno)); + return PCAP_ERROR; + } + sock_fd = socket(PF_PACKET, SOCK_DGRAM, + htons(ETH_P_ALL)); + if (sock_fd == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "socket: %s", pcap_strerror(errno)); + if (errno == EPERM || errno == EACCES) { + /* + * You don't have permission to + * open the socket. + */ + return PCAP_ERROR_PERM_DENIED; + } else { + /* + * Other error. + */ + return PCAP_ERROR; + } + } + handle->md.cooked = 1; + + /* + * Get rid of any link-layer type list + * we allocated - this only supports cooked + * capture. + */ + if (handle->dlt_list != NULL) { + free(handle->dlt_list); + handle->dlt_list = NULL; + handle->dlt_count = 0; + } + + if (handle->linktype == -1) { + /* + * Warn that we're falling back on + * cooked mode; we may want to + * update "map_arphrd_to_dlt()" + * to handle the new type. + */ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "arptype %d not " + "supported by libpcap - " + "falling back to cooked " + "socket", + arptype); + } + + /* + * IrDA capture is not a real "cooked" capture, + * it's IrLAP frames, not IP packets. The + * same applies to LAPD capture. + */ + if (handle->linktype != DLT_LINUX_IRDA && + handle->linktype != DLT_LINUX_LAPD) + handle->linktype = DLT_LINUX_SLL; + } + + handle->md.ifindex = iface_get_id(sock_fd, device, + handle->errbuf); + if (handle->md.ifindex == -1) { + close(sock_fd); + return PCAP_ERROR; + } + + if ((err = iface_bind(sock_fd, handle->md.ifindex, + handle->errbuf)) != 1) { + close(sock_fd); + if (err < 0) + return err; + else + return 0; /* try old mechanism */ + } + } else { + /* + * The "any" device. + */ + if (handle->opt.rfmon) { + /* + * It doesn't support monitor mode. + */ + return PCAP_ERROR_RFMON_NOTSUP; + } + + /* + * It uses cooked mode. + */ + handle->md.cooked = 1; + handle->linktype = DLT_LINUX_SLL; + + /* + * We're not bound to a device. + * For now, we're using this as an indication + * that we can't transmit; stop doing that only + * if we figure out how to transmit in cooked + * mode. + */ + handle->md.ifindex = -1; + } + + /* + * Select promiscuous mode on if "promisc" is set. + * + * Do not turn allmulti mode on if we don't select + * promiscuous mode - on some devices (e.g., Orinoco + * wireless interfaces), allmulti mode isn't supported + * and the driver implements it by turning promiscuous + * mode on, and that screws up the operation of the + * card as a normal networking interface, and on no + * other platform I know of does starting a non- + * promiscuous capture affect which multicast packets + * are received by the interface. + */ + + /* + * Hmm, how can we set promiscuous mode on all interfaces? + * I am not sure if that is possible at all. For now, we + * silently ignore attempts to turn promiscuous mode on + * for the "any" device (so you don't have to explicitly + * disable it in programs such as tcpdump). + */ + + if (!is_any_device && handle->opt.promisc) { + memset(&mr, 0, sizeof(mr)); + mr.mr_ifindex = handle->md.ifindex; + mr.mr_type = PACKET_MR_PROMISC; + if (setsockopt(sock_fd, SOL_PACKET, PACKET_ADD_MEMBERSHIP, + &mr, sizeof(mr)) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "setsockopt: %s", pcap_strerror(errno)); + close(sock_fd); + return PCAP_ERROR; + } + } + + /* Enable auxillary data if supported and reserve room for + * reconstructing VLAN headers. */ +#ifdef HAVE_PACKET_AUXDATA + val = 1; + if (setsockopt(sock_fd, SOL_PACKET, PACKET_AUXDATA, &val, + sizeof(val)) == -1 && errno != ENOPROTOOPT) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "setsockopt: %s", pcap_strerror(errno)); + close(sock_fd); + return PCAP_ERROR; + } + handle->offset += VLAN_TAG_LEN; +#endif /* HAVE_PACKET_AUXDATA */ + + /* + * This is a 2.2[.x] or later kernel (we know that + * because we're not using a SOCK_PACKET socket - + * PF_PACKET is supported only in 2.2 and later + * kernels). + * + * We can safely pass "recvfrom()" a byte count + * based on the snapshot length. + * + * If we're in cooked mode, make the snapshot length + * large enough to hold a "cooked mode" header plus + * 1 byte of packet data (so we don't pass a byte + * count of 0 to "recvfrom()"). + */ + if (handle->md.cooked) { + if (handle->snapshot < SLL_HDR_LEN + 1) + handle->snapshot = SLL_HDR_LEN + 1; + } + handle->bufsize = handle->snapshot; + + /* Save the socket FD in the pcap structure */ + handle->fd = sock_fd; + + return 1; +#else + strncpy(ebuf, + "New packet capturing interface not supported by build " + "environment", PCAP_ERRBUF_SIZE); + return 0; +#endif +} + +#ifdef HAVE_PACKET_RING +/* + * Attempt to activate with memory-mapped access. + * + * On success, returns 1, and sets *status to 0 if there are no warnings + * or to a PCAP_WARNING_ code if there is a warning. + * + * On failure due to lack of support for memory-mapped capture, returns + * 0. + * + * On error, returns -1, and sets *status to the appropriate error code; + * if that is PCAP_ERROR, sets handle->errbuf to the appropriate message. + */ +static int +activate_mmap(pcap_t *handle, int *status) +{ + int ret; + + /* + * Attempt to allocate a buffer to hold the contents of one + * packet, for use by the oneshot callback. + */ + handle->md.oneshot_buffer = malloc(handle->snapshot); + if (handle->md.oneshot_buffer == NULL) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "can't allocate oneshot buffer: %s", + pcap_strerror(errno)); + *status = PCAP_ERROR; + return -1; + } + + if (handle->opt.buffer_size == 0) { + /* by default request 2M for the ring buffer */ + handle->opt.buffer_size = 2*1024*1024; + } + ret = prepare_tpacket_socket(handle); + if (ret == -1) { + free(handle->md.oneshot_buffer); + *status = PCAP_ERROR; + return ret; + } + ret = create_ring(handle, status); + if (ret == 0) { + /* + * We don't support memory-mapped capture; our caller + * will fall back on reading from the socket. + */ + free(handle->md.oneshot_buffer); + return 0; + } + if (ret == -1) { + /* + * Error attempting to enable memory-mapped capture; + * fail. create_ring() has set *status. + */ + free(handle->md.oneshot_buffer); + return -1; + } + + /* + * Success. *status has been set either to 0 if there are no + * warnings or to a PCAP_WARNING_ value if there is a warning. + * + * Override some defaults and inherit the other fields from + * activate_new. + * handle->offset is used to get the current position into the rx ring. + * handle->cc is used to store the ring size. + */ + handle->read_op = pcap_read_linux_mmap; + handle->cleanup_op = pcap_cleanup_linux_mmap; + handle->setfilter_op = pcap_setfilter_linux_mmap; + handle->setnonblock_op = pcap_setnonblock_mmap; + handle->getnonblock_op = pcap_getnonblock_mmap; + handle->oneshot_callback = pcap_oneshot_mmap; + handle->selectable_fd = handle->fd; + return 1; +} +#else /* HAVE_PACKET_RING */ +static int +activate_mmap(pcap_t *handle _U_, int *status _U_) +{ + return 0; +} +#endif /* HAVE_PACKET_RING */ + +#ifdef HAVE_PACKET_RING +/* + * Attempt to set the socket to version 2 of the memory-mapped header. + * Return 1 if we succeed or if we fail because version 2 isn't + * supported; return -1 on any other error, and set handle->errbuf. + */ +static int +prepare_tpacket_socket(pcap_t *handle) +{ +#ifdef HAVE_TPACKET2 + socklen_t len; + int val; +#endif + + handle->md.tp_version = TPACKET_V1; + handle->md.tp_hdrlen = sizeof(struct tpacket_hdr); + +#ifdef HAVE_TPACKET2 + /* Probe whether kernel supports TPACKET_V2 */ + val = TPACKET_V2; + len = sizeof(val); + if (getsockopt(handle->fd, SOL_PACKET, PACKET_HDRLEN, &val, &len) < 0) { + if (errno == ENOPROTOOPT) + return 1; /* no - just drive on */ + + /* Yes - treat as a failure. */ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "can't get TPACKET_V2 header len on packet socket: %s", + pcap_strerror(errno)); + return -1; + } + handle->md.tp_hdrlen = val; + + val = TPACKET_V2; + if (setsockopt(handle->fd, SOL_PACKET, PACKET_VERSION, &val, + sizeof(val)) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "can't activate TPACKET_V2 on packet socket: %s", + pcap_strerror(errno)); + return -1; + } + handle->md.tp_version = TPACKET_V2; + + /* Reserve space for VLAN tag reconstruction */ + val = VLAN_TAG_LEN; + if (setsockopt(handle->fd, SOL_PACKET, PACKET_RESERVE, &val, + sizeof(val)) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "can't set up reserve on packet socket: %s", + pcap_strerror(errno)); + return -1; + } + +#endif /* HAVE_TPACKET2 */ + return 1; +} + +/* + * Attempt to set up memory-mapped access. + * + * On success, returns 1, and sets *status to 0 if there are no warnings + * or to a PCAP_WARNING_ code if there is a warning. + * + * On failure due to lack of support for memory-mapped capture, returns + * 0. + * + * On error, returns -1, and sets *status to the appropriate error code; + * if that is PCAP_ERROR, sets handle->errbuf to the appropriate message. + */ +static int +create_ring(pcap_t *handle, int *status) +{ + unsigned i, j, frames_per_block; + struct tpacket_req req; + socklen_t len; + unsigned int sk_type, tp_reserve, maclen, tp_hdrlen, netoff, macoff; + unsigned int frame_size; + + /* + * Start out assuming no warnings or errors. + */ + *status = 0; + + /* Note that with large snapshot length (say 64K, which is the default + * for recent versions of tcpdump, the value that "-s 0" has given + * for a long time with tcpdump, and the default in Wireshark/TShark), + * if we use the snapshot length to calculate the frame length, + * only a few frames will be available in the ring even with pretty + * large ring size (and a lot of memory will be unused). + * + * Ideally, we should choose a frame length based on the + * minimum of the specified snapshot length and the maximum + * packet size. That's not as easy as it sounds; consider, for + * example, an 802.11 interface in monitor mode, where the + * frame would include a radiotap header, where the maximum + * radiotap header length is device-dependent. + * + * So, for now, we just do this for Ethernet devices, where + * there's no metadata header, and the link-layer header is + * fixed length. We can get the maximum packet size by + * adding 18, the Ethernet header length plus the CRC length + * (just in case we happen to get the CRC in the packet), to + * the MTU of the interface; we fetch the MTU in the hopes + * that it reflects support for jumbo frames. (Even if the + * interface is just being used for passive snooping, the driver + * might set the size of buffers in the receive ring based on + * the MTU, so that the MTU limits the maximum size of packets + * that we can receive.) + * + * We don't do that if segmentation/fragmentation or receive + * offload are enabled, so we don't get rudely surprised by + * "packets" bigger than the MTU. */ + frame_size = handle->snapshot; + if (handle->linktype == DLT_EN10MB) { + int mtu; + int offload; + + offload = iface_get_offload(handle); + if (offload == -1) { + *status = PCAP_ERROR; + return -1; + } + if (!offload) { + mtu = iface_get_mtu(handle->fd, handle->opt.source, + handle->errbuf); + if (mtu == -1) { + *status = PCAP_ERROR; + return -1; + } + if (frame_size > mtu + 18) + frame_size = mtu + 18; + } + } + + /* NOTE: calculus matching those in tpacket_rcv() + * in linux-2.6/net/packet/af_packet.c + */ + len = sizeof(sk_type); + if (getsockopt(handle->fd, SOL_SOCKET, SO_TYPE, &sk_type, &len) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "getsockopt: %s", pcap_strerror(errno)); + *status = PCAP_ERROR; + return -1; + } +#ifdef PACKET_RESERVE + len = sizeof(tp_reserve); + if (getsockopt(handle->fd, SOL_PACKET, PACKET_RESERVE, &tp_reserve, &len) < 0) { + if (errno != ENOPROTOOPT) { + /* + * ENOPROTOOPT means "kernel doesn't support + * PACKET_RESERVE", in which case we fall back + * as best we can. + */ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "getsockopt: %s", pcap_strerror(errno)); + *status = PCAP_ERROR; + return -1; + } + tp_reserve = 0; /* older kernel, reserve not supported */ + } +#else + tp_reserve = 0; /* older kernel, reserve not supported */ +#endif + maclen = (sk_type == SOCK_DGRAM) ? 0 : MAX_LINKHEADER_SIZE; + /* XXX: in the kernel maclen is calculated from + * LL_ALLOCATED_SPACE(dev) and vnet_hdr.hdr_len + * in: packet_snd() in linux-2.6/net/packet/af_packet.c + * then packet_alloc_skb() in linux-2.6/net/packet/af_packet.c + * then sock_alloc_send_pskb() in linux-2.6/net/core/sock.c + * but I see no way to get those sizes in userspace, + * like for instance with an ifreq ioctl(); + * the best thing I've found so far is MAX_HEADER in the kernel + * part of linux-2.6/include/linux/netdevice.h + * which goes up to 128+48=176; since pcap-linux.c defines + * a MAX_LINKHEADER_SIZE of 256 which is greater than that, + * let's use it.. maybe is it even large enough to directly + * replace macoff.. + */ + tp_hdrlen = TPACKET_ALIGN(handle->md.tp_hdrlen) + sizeof(struct sockaddr_ll) ; + netoff = TPACKET_ALIGN(tp_hdrlen + (maclen < 16 ? 16 : maclen)) + tp_reserve; + /* NOTE: AFAICS tp_reserve may break the TPACKET_ALIGN of + * netoff, which contradicts + * linux-2.6/Documentation/networking/packet_mmap.txt + * documenting that: + * "- Gap, chosen so that packet data (Start+tp_net) + * aligns to TPACKET_ALIGNMENT=16" + */ + /* NOTE: in linux-2.6/include/linux/skbuff.h: + * "CPUs often take a performance hit + * when accessing unaligned memory locations" + */ + macoff = netoff - maclen; + req.tp_frame_size = TPACKET_ALIGN(macoff + frame_size); + req.tp_frame_nr = handle->opt.buffer_size/req.tp_frame_size; + + /* compute the minumum block size that will handle this frame. + * The block has to be page size aligned. + * The max block size allowed by the kernel is arch-dependent and + * it's not explicitly checked here. */ + req.tp_block_size = getpagesize(); + while (req.tp_block_size < req.tp_frame_size) + req.tp_block_size <<= 1; + + frames_per_block = req.tp_block_size/req.tp_frame_size; + + /* + * PACKET_TIMESTAMP was added after linux/net_tstamp.h was, + * so we check for PACKET_TIMESTAMP. We check for + * linux/net_tstamp.h just in case a system somehow has + * PACKET_TIMESTAMP but not linux/net_tstamp.h; that might + * be unnecessary. + * + * SIOCSHWTSTAMP was introduced in the patch that introduced + * linux/net_tstamp.h, so we don't bother checking whether + * SIOCSHWTSTAMP is defined (if your Linux system has + * linux/net_tstamp.h but doesn't define SIOCSHWTSTAMP, your + * Linux system is badly broken). + */ +#if defined(HAVE_LINUX_NET_TSTAMP_H) && defined(PACKET_TIMESTAMP) + /* + * If we were told to do so, ask the kernel and the driver + * to use hardware timestamps. + * + * Hardware timestamps are only supported with mmapped + * captures. + */ + if (handle->opt.tstamp_type == PCAP_TSTAMP_ADAPTER || + handle->opt.tstamp_type == PCAP_TSTAMP_ADAPTER_UNSYNCED) { + struct hwtstamp_config hwconfig; + struct ifreq ifr; + int timesource; + + /* + * Ask for hardware time stamps on all packets, + * including transmitted packets. + */ + memset(&hwconfig, 0, sizeof(hwconfig)); + hwconfig.tx_type = HWTSTAMP_TX_ON; + hwconfig.rx_filter = HWTSTAMP_FILTER_ALL; + + memset(&ifr, 0, sizeof(ifr)); + strcpy(ifr.ifr_name, handle->opt.source); + ifr.ifr_data = (void *)&hwconfig; + + if (ioctl(handle->fd, SIOCSHWTSTAMP, &ifr) < 0) { + switch (errno) { + + case EPERM: + /* + * Treat this as an error, as the + * user should try to run this + * with the appropriate privileges - + * and, if they can't, shouldn't + * try requesting hardware time stamps. + */ + *status = PCAP_ERROR_PERM_DENIED; + return -1; + + case EOPNOTSUPP: + /* + * Treat this as a warning, as the + * only way to fix the warning is to + * get an adapter that supports hardware + * time stamps. We'll just fall back + * on the standard host time stamps. + */ + *status = PCAP_WARNING_TSTAMP_TYPE_NOTSUP; + break; + + default: + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "SIOCSHWTSTAMP failed: %s", + pcap_strerror(errno)); + *status = PCAP_ERROR; + return -1; + } + } else { + /* + * Well, that worked. Now specify the type of + * hardware time stamp we want for this + * socket. + */ + if (handle->opt.tstamp_type == PCAP_TSTAMP_ADAPTER) { + /* + * Hardware timestamp, synchronized + * with the system clock. + */ + timesource = SOF_TIMESTAMPING_SYS_HARDWARE; + } else { + /* + * PCAP_TSTAMP_ADAPTER_UNSYNCED - hardware + * timestamp, not synchronized with the + * system clock. + */ + timesource = SOF_TIMESTAMPING_RAW_HARDWARE; + } + if (setsockopt(handle->fd, SOL_PACKET, PACKET_TIMESTAMP, + (void *)×ource, sizeof(timesource))) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "can't set PACKET_TIMESTAMP: %s", + pcap_strerror(errno)); + *status = PCAP_ERROR; + return -1; + } + } + } +#endif /* HAVE_LINUX_NET_TSTAMP_H && PACKET_TIMESTAMP */ + + /* ask the kernel to create the ring */ +retry: + req.tp_block_nr = req.tp_frame_nr / frames_per_block; + + /* req.tp_frame_nr is requested to match frames_per_block*req.tp_block_nr */ + req.tp_frame_nr = req.tp_block_nr * frames_per_block; + + if (setsockopt(handle->fd, SOL_PACKET, PACKET_RX_RING, + (void *) &req, sizeof(req))) { + if ((errno == ENOMEM) && (req.tp_block_nr > 1)) { + /* + * Memory failure; try to reduce the requested ring + * size. + * + * We used to reduce this by half -- do 5% instead. + * That may result in more iterations and a longer + * startup, but the user will be much happier with + * the resulting buffer size. + */ + if (req.tp_frame_nr < 20) + req.tp_frame_nr -= 1; + else + req.tp_frame_nr -= req.tp_frame_nr/20; + goto retry; + } + if (errno == ENOPROTOOPT) { + /* + * We don't have ring buffer support in this kernel. + */ + return 0; + } + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "can't create rx ring on packet socket: %s", + pcap_strerror(errno)); + *status = PCAP_ERROR; + return -1; + } + + /* memory map the rx ring */ + handle->md.mmapbuflen = req.tp_block_nr * req.tp_block_size; + handle->md.mmapbuf = mmap(0, handle->md.mmapbuflen, + PROT_READ|PROT_WRITE, MAP_SHARED, handle->fd, 0); + if (handle->md.mmapbuf == MAP_FAILED) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "can't mmap rx ring: %s", pcap_strerror(errno)); + + /* clear the allocated ring on error*/ + destroy_ring(handle); + *status = PCAP_ERROR; + return -1; + } + + /* allocate a ring for each frame header pointer*/ + handle->cc = req.tp_frame_nr; + handle->buffer = malloc(handle->cc * sizeof(union thdr *)); + if (!handle->buffer) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "can't allocate ring of frame headers: %s", + pcap_strerror(errno)); + + destroy_ring(handle); + *status = PCAP_ERROR; + return -1; + } + + /* fill the header ring with proper frame ptr*/ + handle->offset = 0; + for (i=0; imd.mmapbuf[i*req.tp_block_size]; + for (j=0; joffset) { + RING_GET_FRAME(handle) = base; + base += req.tp_frame_size; + } + } + + handle->bufsize = req.tp_frame_size; + handle->offset = 0; + return 1; +} + +/* free all ring related resources*/ +static void +destroy_ring(pcap_t *handle) +{ + /* tell the kernel to destroy the ring*/ + struct tpacket_req req; + memset(&req, 0, sizeof(req)); + setsockopt(handle->fd, SOL_PACKET, PACKET_RX_RING, + (void *) &req, sizeof(req)); + + /* if ring is mapped, unmap it*/ + if (handle->md.mmapbuf) { + /* do not test for mmap failure, as we can't recover from any error */ + munmap(handle->md.mmapbuf, handle->md.mmapbuflen); + handle->md.mmapbuf = NULL; + } +} + +/* + * Special one-shot callback, used for pcap_next() and pcap_next_ex(), + * for Linux mmapped capture. + * + * The problem is that pcap_next() and pcap_next_ex() expect the packet + * data handed to the callback to be valid after the callback returns, + * but pcap_read_linux_mmap() has to release that packet as soon as + * the callback returns (otherwise, the kernel thinks there's still + * at least one unprocessed packet available in the ring, so a select() + * will immediately return indicating that there's data to process), so, + * in the callback, we have to make a copy of the packet. + * + * Yes, this means that, if the capture is using the ring buffer, using + * pcap_next() or pcap_next_ex() requires more copies than using + * pcap_loop() or pcap_dispatch(). If that bothers you, don't use + * pcap_next() or pcap_next_ex(). + */ +static void +pcap_oneshot_mmap(u_char *user, const struct pcap_pkthdr *h, + const u_char *bytes) +{ + struct oneshot_userdata *sp = (struct oneshot_userdata *)user; + + *sp->hdr = *h; + memcpy(sp->pd->md.oneshot_buffer, bytes, h->caplen); + *sp->pkt = sp->pd->md.oneshot_buffer; +} + +static void +pcap_cleanup_linux_mmap( pcap_t *handle ) +{ + destroy_ring(handle); + if (handle->md.oneshot_buffer != NULL) { + free(handle->md.oneshot_buffer); + handle->md.oneshot_buffer = NULL; + } + pcap_cleanup_linux(handle); +} + + +static int +pcap_getnonblock_mmap(pcap_t *p, char *errbuf) +{ + /* use negative value of timeout to indicate non blocking ops */ + return (p->md.timeout<0); +} + +static int +pcap_setnonblock_mmap(pcap_t *p, int nonblock, char *errbuf) +{ + /* map each value to the corresponding 2's complement, to + * preserve the timeout value provided with pcap_set_timeout */ + if (nonblock) { + if (p->md.timeout >= 0) { + /* + * Timeout is non-negative, so we're not already + * in non-blocking mode; set it to the 2's + * complement, to make it negative, as an + * indication that we're in non-blocking mode. + */ + p->md.timeout = p->md.timeout*-1 - 1; + } + } else { + if (p->md.timeout < 0) { + /* + * Timeout is negative, so we're not already + * in blocking mode; reverse the previous + * operation, to make the timeout non-negative + * again. + */ + p->md.timeout = (p->md.timeout+1)*-1; + } + } + return 0; +} + +static inline union thdr * +pcap_get_ring_frame(pcap_t *handle, int status) +{ + union thdr h; + + h.raw = RING_GET_FRAME(handle); + switch (handle->md.tp_version) { + case TPACKET_V1: + if (status != (h.h1->tp_status ? TP_STATUS_USER : + TP_STATUS_KERNEL)) + return NULL; + break; +#ifdef HAVE_TPACKET2 + case TPACKET_V2: + if (status != (h.h2->tp_status ? TP_STATUS_USER : + TP_STATUS_KERNEL)) + return NULL; + break; +#endif + } + return h.raw; +} + +#ifndef POLLRDHUP +#define POLLRDHUP 0 +#endif + +static int +pcap_read_linux_mmap(pcap_t *handle, int max_packets, pcap_handler callback, + u_char *user) +{ + int timeout; + int pkts = 0; + char c; + + /* wait for frames availability.*/ + if (!pcap_get_ring_frame(handle, TP_STATUS_USER)) { + struct pollfd pollinfo; + int ret; + + pollinfo.fd = handle->fd; + pollinfo.events = POLLIN; + + if (handle->md.timeout == 0) + timeout = -1; /* block forever */ + else if (handle->md.timeout > 0) + timeout = handle->md.timeout; /* block for that amount of time */ + else + timeout = 0; /* non-blocking mode - poll to pick up errors */ + do { + ret = poll(&pollinfo, 1, timeout); + if (ret < 0 && errno != EINTR) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "can't poll on packet socket: %s", + pcap_strerror(errno)); + return PCAP_ERROR; + } else if (ret > 0 && + (pollinfo.revents & (POLLHUP|POLLRDHUP|POLLERR|POLLNVAL))) { + /* + * There's some indication other than + * "you can read on this descriptor" on + * the descriptor. + */ + if (pollinfo.revents & (POLLHUP | POLLRDHUP)) { + snprintf(handle->errbuf, + PCAP_ERRBUF_SIZE, + "Hangup on packet socket"); + return PCAP_ERROR; + } + if (pollinfo.revents & POLLERR) { + /* + * A recv() will give us the + * actual error code. + * + * XXX - make the socket non-blocking? + */ + if (recv(handle->fd, &c, sizeof c, + MSG_PEEK) != -1) + continue; /* what, no error? */ + if (errno == ENETDOWN) { + /* + * The device on which we're + * capturing went away. + * + * XXX - we should really return + * PCAP_ERROR_IFACE_NOT_UP, + * but pcap_dispatch() etc. + * aren't defined to return + * that. + */ + snprintf(handle->errbuf, + PCAP_ERRBUF_SIZE, + "The interface went down"); + } else { + snprintf(handle->errbuf, + PCAP_ERRBUF_SIZE, + "Error condition on packet socket: %s", + strerror(errno)); + } + return PCAP_ERROR; + } + if (pollinfo.revents & POLLNVAL) { + snprintf(handle->errbuf, + PCAP_ERRBUF_SIZE, + "Invalid polling request on packet socket"); + return PCAP_ERROR; + } + } + /* check for break loop condition on interrupted syscall*/ + if (handle->break_loop) { + handle->break_loop = 0; + return PCAP_ERROR_BREAK; + } + } while (ret < 0); + } + + /* non-positive values of max_packets are used to require all + * packets currently available in the ring */ + while ((pkts < max_packets) || (max_packets <= 0)) { + int run_bpf; + struct sockaddr_ll *sll; + struct pcap_pkthdr pcaphdr; + unsigned char *bp; + union thdr h; + unsigned int tp_len; + unsigned int tp_mac; + unsigned int tp_snaplen; + unsigned int tp_sec; + unsigned int tp_usec; + + h.raw = pcap_get_ring_frame(handle, TP_STATUS_USER); + if (!h.raw) + break; + + switch (handle->md.tp_version) { + case TPACKET_V1: + tp_len = h.h1->tp_len; + tp_mac = h.h1->tp_mac; + tp_snaplen = h.h1->tp_snaplen; + tp_sec = h.h1->tp_sec; + tp_usec = h.h1->tp_usec; + break; +#ifdef HAVE_TPACKET2 + case TPACKET_V2: + tp_len = h.h2->tp_len; + tp_mac = h.h2->tp_mac; + tp_snaplen = h.h2->tp_snaplen; + tp_sec = h.h2->tp_sec; + tp_usec = h.h2->tp_nsec / 1000; + break; +#endif + default: + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "unsupported tpacket version %d", + handle->md.tp_version); + return -1; + } + /* perform sanity check on internal offset. */ + if (tp_mac + tp_snaplen > handle->bufsize) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "corrupted frame on kernel ring mac " + "offset %d + caplen %d > frame len %d", + tp_mac, tp_snaplen, handle->bufsize); + return -1; + } + + /* run filter on received packet + * If the kernel filtering is enabled we need to run the + * filter until all the frames present into the ring + * at filter creation time are processed. + * In such case md.use_bpf is used as a counter for the + * packet we need to filter. + * Note: alternatively it could be possible to stop applying + * the filter when the ring became empty, but it can possibly + * happen a lot later... */ + bp = (unsigned char*)h.raw + tp_mac; + run_bpf = (!handle->md.use_bpf) || + ((handle->md.use_bpf>1) && handle->md.use_bpf--); + if (run_bpf && handle->fcode.bf_insns && + (bpf_filter(handle->fcode.bf_insns, bp, + tp_len, tp_snaplen) == 0)) + goto skip; + + /* + * Do checks based on packet direction. + */ + sll = (void *)h.raw + TPACKET_ALIGN(handle->md.tp_hdrlen); + if (sll->sll_pkttype == PACKET_OUTGOING) { + /* + * Outgoing packet. + * If this is from the loopback device, reject it; + * we'll see the packet as an incoming packet as well, + * and we don't want to see it twice. + */ + if (sll->sll_ifindex == handle->md.lo_ifindex) + goto skip; + + /* + * If the user only wants incoming packets, reject it. + */ + if (handle->direction == PCAP_D_IN) + goto skip; + } else { + /* + * Incoming packet. + * If the user only wants outgoing packets, reject it. + */ + if (handle->direction == PCAP_D_OUT) + goto skip; + } + + /* get required packet info from ring header */ + pcaphdr.ts.tv_sec = tp_sec; + pcaphdr.ts.tv_usec = tp_usec; + pcaphdr.caplen = tp_snaplen; + pcaphdr.len = tp_len; + + /* if required build in place the sll header*/ + if (handle->md.cooked) { + struct sll_header *hdrp; + + /* + * The kernel should have left us with enough + * space for an sll header; back up the packet + * data pointer into that space, as that'll be + * the beginning of the packet we pass to the + * callback. + */ + bp -= SLL_HDR_LEN; + + /* + * Let's make sure that's past the end of + * the tpacket header, i.e. >= + * ((u_char *)thdr + TPACKET_HDRLEN), so we + * don't step on the header when we construct + * the sll header. + */ + if (bp < (u_char *)h.raw + + TPACKET_ALIGN(handle->md.tp_hdrlen) + + sizeof(struct sockaddr_ll)) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "cooked-mode frame doesn't have room for sll header"); + return -1; + } + + /* + * OK, that worked; construct the sll header. + */ + hdrp = (struct sll_header *)bp; + hdrp->sll_pkttype = map_packet_type_to_sll_type( + sll->sll_pkttype); + hdrp->sll_hatype = htons(sll->sll_hatype); + hdrp->sll_halen = htons(sll->sll_halen); + memcpy(hdrp->sll_addr, sll->sll_addr, SLL_ADDRLEN); + hdrp->sll_protocol = sll->sll_protocol; + + /* update packet len */ + pcaphdr.caplen += SLL_HDR_LEN; + pcaphdr.len += SLL_HDR_LEN; + } + +#ifdef HAVE_TPACKET2 + if (handle->md.tp_version == TPACKET_V2 && h.h2->tp_vlan_tci && + tp_snaplen >= 2 * ETH_ALEN) { + struct vlan_tag *tag; + + bp -= VLAN_TAG_LEN; + memmove(bp, bp + VLAN_TAG_LEN, 2 * ETH_ALEN); + + tag = (struct vlan_tag *)(bp + 2 * ETH_ALEN); + tag->vlan_tpid = htons(ETH_P_8021Q); + tag->vlan_tci = htons(h.h2->tp_vlan_tci); + + pcaphdr.caplen += VLAN_TAG_LEN; + pcaphdr.len += VLAN_TAG_LEN; + } +#endif + + /* + * The only way to tell the kernel to cut off the + * packet at a snapshot length is with a filter program; + * if there's no filter program, the kernel won't cut + * the packet off. + * + * Trim the snapshot length to be no longer than the + * specified snapshot length. + */ + if (pcaphdr.caplen > handle->snapshot) + pcaphdr.caplen = handle->snapshot; + + /* pass the packet to the user */ + pkts++; + callback(user, &pcaphdr, bp); + handle->md.packets_read++; + +skip: + /* next packet */ + switch (handle->md.tp_version) { + case TPACKET_V1: + h.h1->tp_status = TP_STATUS_KERNEL; + break; +#ifdef HAVE_TPACKET2 + case TPACKET_V2: + h.h2->tp_status = TP_STATUS_KERNEL; + break; +#endif + } + if (++handle->offset >= handle->cc) + handle->offset = 0; + + /* check for break loop condition*/ + if (handle->break_loop) { + handle->break_loop = 0; + return PCAP_ERROR_BREAK; + } + } + return pkts; +} + +static int +pcap_setfilter_linux_mmap(pcap_t *handle, struct bpf_program *filter) +{ + int n, offset; + int ret; + + /* + * Don't rewrite "ret" instructions; we don't need to, as + * we're not reading packets with recvmsg(), and we don't + * want to, as, by not rewriting them, the kernel can avoid + * copying extra data. + */ + ret = pcap_setfilter_linux_common(handle, filter, 1); + if (ret < 0) + return ret; + + /* if the kernel filter is enabled, we need to apply the filter on + * all packets present into the ring. Get an upper bound of their number + */ + if (!handle->md.use_bpf) + return ret; + + /* walk the ring backward and count the free slot */ + offset = handle->offset; + if (--handle->offset < 0) + handle->offset = handle->cc - 1; + for (n=0; n < handle->cc; ++n) { + if (--handle->offset < 0) + handle->offset = handle->cc - 1; + if (!pcap_get_ring_frame(handle, TP_STATUS_KERNEL)) + break; + } + + /* be careful to not change current ring position */ + handle->offset = offset; + + /* store the number of packets currently present in the ring */ + handle->md.use_bpf = 1 + (handle->cc - n); + return ret; +} + +#endif /* HAVE_PACKET_RING */ + + +#ifdef HAVE_PF_PACKET_SOCKETS +/* + * Return the index of the given device name. Fill ebuf and return + * -1 on failure. + */ +static int +iface_get_id(int fd, const char *device, char *ebuf) +{ + struct ifreq ifr; + + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name)); + + if (ioctl(fd, SIOCGIFINDEX, &ifr) == -1) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "SIOCGIFINDEX: %s", pcap_strerror(errno)); + return -1; + } + + return ifr.ifr_ifindex; +} + +/* + * Bind the socket associated with FD to the given device. + * Return 1 on success, 0 if we should try a SOCK_PACKET socket, + * or a PCAP_ERROR_ value on a hard error. + */ +static int +iface_bind(int fd, int ifindex, char *ebuf) +{ + struct sockaddr_ll sll; + int err; + socklen_t errlen = sizeof(err); + + memset(&sll, 0, sizeof(sll)); + sll.sll_family = AF_PACKET; + sll.sll_ifindex = ifindex; + sll.sll_protocol = htons(ETH_P_ALL); + + if (bind(fd, (struct sockaddr *) &sll, sizeof(sll)) == -1) { + if (errno == ENETDOWN) { + /* + * Return a "network down" indication, so that + * the application can report that rather than + * saying we had a mysterious failure and + * suggest that they report a problem to the + * libpcap developers. + */ + return PCAP_ERROR_IFACE_NOT_UP; + } else { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "bind: %s", pcap_strerror(errno)); + return PCAP_ERROR; + } + } + + /* Any pending errors, e.g., network is down? */ + + if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &err, &errlen) == -1) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "getsockopt: %s", pcap_strerror(errno)); + return 0; + } + + if (err == ENETDOWN) { + /* + * Return a "network down" indication, so that + * the application can report that rather than + * saying we had a mysterious failure and + * suggest that they report a problem to the + * libpcap developers. + */ + return PCAP_ERROR_IFACE_NOT_UP; + } else if (err > 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "bind: %s", pcap_strerror(err)); + return 0; + } + + return 1; +} + +#ifdef IW_MODE_MONITOR +/* + * Check whether the device supports the Wireless Extensions. + * Returns 1 if it does, 0 if it doesn't, PCAP_ERROR_NO_SUCH_DEVICE + * if the device doesn't even exist. + */ +static int +has_wext(int sock_fd, const char *device, char *ebuf) +{ + struct iwreq ireq; + + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + if (ioctl(sock_fd, SIOCGIWNAME, &ireq) >= 0) + return 1; /* yes */ + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "%s: SIOCGIWPRIV: %s", device, pcap_strerror(errno)); + if (errno == ENODEV) + return PCAP_ERROR_NO_SUCH_DEVICE; + return 0; +} + +/* + * Per me si va ne la citta dolente, + * Per me si va ne l'etterno dolore, + * ... + * Lasciate ogne speranza, voi ch'intrate. + * + * XXX - airmon-ng does special stuff with the Orinoco driver and the + * wlan-ng driver. + */ +typedef enum { + MONITOR_WEXT, + MONITOR_HOSTAP, + MONITOR_PRISM, + MONITOR_PRISM54, + MONITOR_ACX100, + MONITOR_RT2500, + MONITOR_RT2570, + MONITOR_RT73, + MONITOR_RTL8XXX +} monitor_type; + +/* + * Use the Wireless Extensions, if we have them, to try to turn monitor mode + * on if it's not already on. + * + * Returns 1 on success, 0 if we don't support the Wireless Extensions + * on this device, or a PCAP_ERROR_ value if we do support them but + * we weren't able to turn monitor mode on. + */ +static int +enter_rfmon_mode_wext(pcap_t *handle, int sock_fd, const char *device) +{ + /* + * XXX - at least some adapters require non-Wireless Extensions + * mechanisms to turn monitor mode on. + * + * Atheros cards might require that a separate "monitor virtual access + * point" be created, with later versions of the madwifi driver. + * airmon-ng does "wlanconfig ath create wlandev {if} wlanmode + * monitor -bssid", which apparently spits out a line "athN" + * where "athN" is the monitor mode device. To leave monitor + * mode, it destroys the monitor mode device. + * + * Some Intel Centrino adapters might require private ioctls to get + * radio headers; the ipw2200 and ipw3945 drivers allow you to + * configure a separate "rtapN" interface to capture in monitor + * mode without preventing the adapter from operating normally. + * (airmon-ng doesn't appear to use that, though.) + * + * It would be Truly Wonderful if mac80211 and nl80211 cleaned this + * up, and if all drivers were converted to mac80211 drivers. + * + * If interface {if} is a mac80211 driver, the file + * /sys/class/net/{if}/phy80211 is a symlink to + * /sys/class/ieee80211/{phydev}, for some {phydev}. + * + * On Fedora 9, with a 2.6.26.3-29 kernel, my Zydas stick, at + * least, has a "wmaster0" device and a "wlan0" device; the + * latter is the one with the IP address. Both show up in + * "tcpdump -D" output. Capturing on the wmaster0 device + * captures with 802.11 headers. + * + * airmon-ng searches through /sys/class/net for devices named + * monN, starting with mon0; as soon as one *doesn't* exist, + * it chooses that as the monitor device name. If the "iw" + * command exists, it does "iw dev {if} interface add {monif} + * type monitor", where {monif} is the monitor device. It + * then (sigh) sleeps .1 second, and then configures the + * device up. Otherwise, if /sys/class/ieee80211/{phydev}/add_iface + * is a file, it writes {mondev}, without a newline, to that file, + * and again (sigh) sleeps .1 second, and then iwconfig's that + * device into monitor mode and configures it up. Otherwise, + * you can't do monitor mode. + * + * All these devices are "glued" together by having the + * /sys/class/net/{device}/phy80211 links pointing to the same + * place, so, given a wmaster, wlan, or mon device, you can + * find the other devices by looking for devices with + * the same phy80211 link. + * + * To turn monitor mode off, delete the monitor interface, + * either with "iw dev {monif} interface del" or by sending + * {monif}, with no NL, down /sys/class/ieee80211/{phydev}/remove_iface + * + * Note: if you try to create a monitor device named "monN", and + * there's already a "monN" device, it fails, as least with + * the netlink interface (which is what iw uses), with a return + * value of -ENFILE. (Return values are negative errnos.) We + * could probably use that to find an unused device. + */ + int err; + struct iwreq ireq; + struct iw_priv_args *priv; + monitor_type montype; + int i; + __u32 cmd; + struct ifreq ifr; + int oldflags; + int args[2]; + int channel; + + /* + * Does this device *support* the Wireless Extensions? + */ + err = has_wext(sock_fd, device, handle->errbuf); + if (err <= 0) + return err; /* either it doesn't or the device doesn't even exist */ + /* + * Start out assuming we have no private extensions to control + * radio metadata. + */ + montype = MONITOR_WEXT; + cmd = 0; + + /* + * Try to get all the Wireless Extensions private ioctls + * supported by this device. + * + * First, get the size of the buffer we need, by supplying no + * buffer and a length of 0. If the device supports private + * ioctls, it should return E2BIG, with ireq.u.data.length set + * to the length we need. If it doesn't support them, it should + * return EOPNOTSUPP. + */ + memset(&ireq, 0, sizeof ireq); + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + ireq.u.data.pointer = (void *)args; + ireq.u.data.length = 0; + ireq.u.data.flags = 0; + if (ioctl(sock_fd, SIOCGIWPRIV, &ireq) != -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: SIOCGIWPRIV with a zero-length buffer didn't fail!", + device); + return PCAP_ERROR; + } + if (errno != EOPNOTSUPP) { + /* + * OK, it's not as if there are no private ioctls. + */ + if (errno != E2BIG) { + /* + * Failed. + */ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: SIOCGIWPRIV: %s", device, + pcap_strerror(errno)); + return PCAP_ERROR; + } + + /* + * OK, try to get the list of private ioctls. + */ + priv = malloc(ireq.u.data.length * sizeof (struct iw_priv_args)); + if (priv == NULL) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + return PCAP_ERROR; + } + ireq.u.data.pointer = (void *)priv; + if (ioctl(sock_fd, SIOCGIWPRIV, &ireq) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: SIOCGIWPRIV: %s", device, + pcap_strerror(errno)); + free(priv); + return PCAP_ERROR; + } + + /* + * Look for private ioctls to turn monitor mode on or, if + * monitor mode is on, to set the header type. + */ + for (i = 0; i < ireq.u.data.length; i++) { + if (strcmp(priv[i].name, "monitor_type") == 0) { + /* + * Hostap driver, use this one. + * Set monitor mode first. + * You can set it to 0 to get DLT_IEEE80211, + * 1 to get DLT_PRISM, 2 to get + * DLT_IEEE80211_RADIO_AVS, and, with more + * recent versions of the driver, 3 to get + * DLT_IEEE80211_RADIO. + */ + if ((priv[i].set_args & IW_PRIV_TYPE_MASK) != IW_PRIV_TYPE_INT) + break; + if (!(priv[i].set_args & IW_PRIV_SIZE_FIXED)) + break; + if ((priv[i].set_args & IW_PRIV_SIZE_MASK) != 1) + break; + montype = MONITOR_HOSTAP; + cmd = priv[i].cmd; + break; + } + if (strcmp(priv[i].name, "set_prismhdr") == 0) { + /* + * Prism54 driver, use this one. + * Set monitor mode first. + * You can set it to 2 to get DLT_IEEE80211 + * or 3 or get DLT_PRISM. + */ + if ((priv[i].set_args & IW_PRIV_TYPE_MASK) != IW_PRIV_TYPE_INT) + break; + if (!(priv[i].set_args & IW_PRIV_SIZE_FIXED)) + break; + if ((priv[i].set_args & IW_PRIV_SIZE_MASK) != 1) + break; + montype = MONITOR_PRISM54; + cmd = priv[i].cmd; + break; + } + if (strcmp(priv[i].name, "forceprismheader") == 0) { + /* + * RT2570 driver, use this one. + * Do this after turning monitor mode on. + * You can set it to 1 to get DLT_PRISM or 2 + * to get DLT_IEEE80211. + */ + if ((priv[i].set_args & IW_PRIV_TYPE_MASK) != IW_PRIV_TYPE_INT) + break; + if (!(priv[i].set_args & IW_PRIV_SIZE_FIXED)) + break; + if ((priv[i].set_args & IW_PRIV_SIZE_MASK) != 1) + break; + montype = MONITOR_RT2570; + cmd = priv[i].cmd; + break; + } + if (strcmp(priv[i].name, "forceprism") == 0) { + /* + * RT73 driver, use this one. + * Do this after turning monitor mode on. + * Its argument is a *string*; you can + * set it to "1" to get DLT_PRISM or "2" + * to get DLT_IEEE80211. + */ + if ((priv[i].set_args & IW_PRIV_TYPE_MASK) != IW_PRIV_TYPE_CHAR) + break; + if (priv[i].set_args & IW_PRIV_SIZE_FIXED) + break; + montype = MONITOR_RT73; + cmd = priv[i].cmd; + break; + } + if (strcmp(priv[i].name, "prismhdr") == 0) { + /* + * One of the RTL8xxx drivers, use this one. + * It can only be done after monitor mode + * has been turned on. You can set it to 1 + * to get DLT_PRISM or 0 to get DLT_IEEE80211. + */ + if ((priv[i].set_args & IW_PRIV_TYPE_MASK) != IW_PRIV_TYPE_INT) + break; + if (!(priv[i].set_args & IW_PRIV_SIZE_FIXED)) + break; + if ((priv[i].set_args & IW_PRIV_SIZE_MASK) != 1) + break; + montype = MONITOR_RTL8XXX; + cmd = priv[i].cmd; + break; + } + if (strcmp(priv[i].name, "rfmontx") == 0) { + /* + * RT2500 or RT61 driver, use this one. + * It has one one-byte parameter; set + * u.data.length to 1 and u.data.pointer to + * point to the parameter. + * It doesn't itself turn monitor mode on. + * You can set it to 1 to allow transmitting + * in monitor mode(?) and get DLT_IEEE80211, + * or set it to 0 to disallow transmitting in + * monitor mode(?) and get DLT_PRISM. + */ + if ((priv[i].set_args & IW_PRIV_TYPE_MASK) != IW_PRIV_TYPE_INT) + break; + if ((priv[i].set_args & IW_PRIV_SIZE_MASK) != 2) + break; + montype = MONITOR_RT2500; + cmd = priv[i].cmd; + break; + } + if (strcmp(priv[i].name, "monitor") == 0) { + /* + * Either ACX100 or hostap, use this one. + * It turns monitor mode on. + * If it takes two arguments, it's ACX100; + * the first argument is 1 for DLT_PRISM + * or 2 for DLT_IEEE80211, and the second + * argument is the channel on which to + * run. If it takes one argument, it's + * HostAP, and the argument is 2 for + * DLT_IEEE80211 and 3 for DLT_PRISM. + * + * If we see this, we don't quit, as this + * might be a version of the hostap driver + * that also supports "monitor_type". + */ + if ((priv[i].set_args & IW_PRIV_TYPE_MASK) != IW_PRIV_TYPE_INT) + break; + if (!(priv[i].set_args & IW_PRIV_SIZE_FIXED)) + break; + switch (priv[i].set_args & IW_PRIV_SIZE_MASK) { + + case 1: + montype = MONITOR_PRISM; + cmd = priv[i].cmd; + break; + + case 2: + montype = MONITOR_ACX100; + cmd = priv[i].cmd; + break; + + default: + break; + } + } + } + free(priv); + } + + /* + * XXX - ipw3945? islism? + */ + + /* + * Get the old mode. + */ + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + if (ioctl(sock_fd, SIOCGIWMODE, &ireq) == -1) { + /* + * We probably won't be able to set the mode, either. + */ + return PCAP_ERROR_RFMON_NOTSUP; + } + + /* + * Is it currently in monitor mode? + */ + if (ireq.u.mode == IW_MODE_MONITOR) { + /* + * Yes. Just leave things as they are. + * We don't offer multiple link-layer types, as + * changing the link-layer type out from under + * somebody else capturing in monitor mode would + * be considered rude. + */ + return 1; + } + /* + * No. We have to put the adapter into rfmon mode. + */ + + /* + * If we haven't already done so, arrange to have + * "pcap_close_all()" called when we exit. + */ + if (!pcap_do_addexit(handle)) { + /* + * "atexit()" failed; don't put the interface + * in rfmon mode, just give up. + */ + return PCAP_ERROR_RFMON_NOTSUP; + } + + /* + * Save the old mode. + */ + handle->md.oldmode = ireq.u.mode; + + /* + * Put the adapter in rfmon mode. How we do this depends + * on whether we have a special private ioctl or not. + */ + if (montype == MONITOR_PRISM) { + /* + * We have the "monitor" private ioctl, but none of + * the other private ioctls. Use this, and select + * the Prism header. + * + * If it fails, just fall back on SIOCSIWMODE. + */ + memset(&ireq, 0, sizeof ireq); + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + ireq.u.data.length = 1; /* 1 argument */ + args[0] = 3; /* request Prism header */ + memcpy(ireq.u.name, args, IFNAMSIZ); + if (ioctl(sock_fd, cmd, &ireq) != -1) { + /* + * Success. + * Note that we have to put the old mode back + * when we close the device. + */ + handle->md.must_do_on_close |= MUST_CLEAR_RFMON; + + /* + * Add this to the list of pcaps to close + * when we exit. + */ + pcap_add_to_pcaps_to_close(handle); + + return 1; + } + + /* + * Failure. Fall back on SIOCSIWMODE. + */ + } + + /* + * First, take the interface down if it's up; otherwise, we + * might get EBUSY. + */ + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name)); + if (ioctl(sock_fd, SIOCGIFFLAGS, &ifr) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: Can't get flags: %s", device, strerror(errno)); + return PCAP_ERROR; + } + oldflags = 0; + if (ifr.ifr_flags & IFF_UP) { + oldflags = ifr.ifr_flags; + ifr.ifr_flags &= ~IFF_UP; + if (ioctl(sock_fd, SIOCSIFFLAGS, &ifr) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: Can't set flags: %s", device, strerror(errno)); + return PCAP_ERROR; + } + } + + /* + * Then turn monitor mode on. + */ + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + ireq.u.mode = IW_MODE_MONITOR; + if (ioctl(sock_fd, SIOCSIWMODE, &ireq) == -1) { + /* + * Scientist, you've failed. + * Bring the interface back up if we shut it down. + */ + ifr.ifr_flags = oldflags; + if (ioctl(sock_fd, SIOCSIFFLAGS, &ifr) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: Can't set flags: %s", device, strerror(errno)); + return PCAP_ERROR; + } + return PCAP_ERROR_RFMON_NOTSUP; + } + + /* + * XXX - airmon-ng does "iwconfig {if} key off" after setting + * monitor mode and setting the channel, and then does + * "iwconfig up". + */ + + /* + * Now select the appropriate radio header. + */ + switch (montype) { + + case MONITOR_WEXT: + /* + * We don't have any private ioctl to set the header. + */ + break; + + case MONITOR_HOSTAP: + /* + * Try to select the radiotap header. + */ + memset(&ireq, 0, sizeof ireq); + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + args[0] = 3; /* request radiotap header */ + memcpy(ireq.u.name, args, sizeof (int)); + if (ioctl(sock_fd, cmd, &ireq) != -1) + break; /* success */ + + /* + * That failed. Try to select the AVS header. + */ + memset(&ireq, 0, sizeof ireq); + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + args[0] = 2; /* request AVS header */ + memcpy(ireq.u.name, args, sizeof (int)); + if (ioctl(sock_fd, cmd, &ireq) != -1) + break; /* success */ + + /* + * That failed. Try to select the Prism header. + */ + memset(&ireq, 0, sizeof ireq); + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + args[0] = 1; /* request Prism header */ + memcpy(ireq.u.name, args, sizeof (int)); + ioctl(sock_fd, cmd, &ireq); + break; + + case MONITOR_PRISM: + /* + * The private ioctl failed. + */ + break; + + case MONITOR_PRISM54: + /* + * Select the Prism header. + */ + memset(&ireq, 0, sizeof ireq); + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + args[0] = 3; /* request Prism header */ + memcpy(ireq.u.name, args, sizeof (int)); + ioctl(sock_fd, cmd, &ireq); + break; + + case MONITOR_ACX100: + /* + * Get the current channel. + */ + memset(&ireq, 0, sizeof ireq); + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + if (ioctl(sock_fd, SIOCGIWFREQ, &ireq) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: SIOCGIWFREQ: %s", device, + pcap_strerror(errno)); + return PCAP_ERROR; + } + channel = ireq.u.freq.m; + + /* + * Select the Prism header, and set the channel to the + * current value. + */ + memset(&ireq, 0, sizeof ireq); + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + args[0] = 1; /* request Prism header */ + args[1] = channel; /* set channel */ + memcpy(ireq.u.name, args, 2*sizeof (int)); + ioctl(sock_fd, cmd, &ireq); + break; + + case MONITOR_RT2500: + /* + * Disallow transmission - that turns on the + * Prism header. + */ + memset(&ireq, 0, sizeof ireq); + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + args[0] = 0; /* disallow transmitting */ + memcpy(ireq.u.name, args, sizeof (int)); + ioctl(sock_fd, cmd, &ireq); + break; + + case MONITOR_RT2570: + /* + * Force the Prism header. + */ + memset(&ireq, 0, sizeof ireq); + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + args[0] = 1; /* request Prism header */ + memcpy(ireq.u.name, args, sizeof (int)); + ioctl(sock_fd, cmd, &ireq); + break; + + case MONITOR_RT73: + /* + * Force the Prism header. + */ + memset(&ireq, 0, sizeof ireq); + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + ireq.u.data.length = 1; /* 1 argument */ + ireq.u.data.pointer = "1"; + ireq.u.data.flags = 0; + ioctl(sock_fd, cmd, &ireq); + break; + + case MONITOR_RTL8XXX: + /* + * Force the Prism header. + */ + memset(&ireq, 0, sizeof ireq); + strncpy(ireq.ifr_ifrn.ifrn_name, device, + sizeof ireq.ifr_ifrn.ifrn_name); + ireq.ifr_ifrn.ifrn_name[sizeof ireq.ifr_ifrn.ifrn_name - 1] = 0; + args[0] = 1; /* request Prism header */ + memcpy(ireq.u.name, args, sizeof (int)); + ioctl(sock_fd, cmd, &ireq); + break; + } + + /* + * Now bring the interface back up if we brought it down. + */ + if (oldflags != 0) { + ifr.ifr_flags = oldflags; + if (ioctl(sock_fd, SIOCSIFFLAGS, &ifr) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: Can't set flags: %s", device, strerror(errno)); + + /* + * At least try to restore the old mode on the + * interface. + */ + if (ioctl(handle->fd, SIOCSIWMODE, &ireq) == -1) { + /* + * Scientist, you've failed. + */ + fprintf(stderr, + "Can't restore interface wireless mode (SIOCSIWMODE failed: %s).\n" + "Please adjust manually.\n", + strerror(errno)); + } + return PCAP_ERROR; + } + } + + /* + * Note that we have to put the old mode back when we + * close the device. + */ + handle->md.must_do_on_close |= MUST_CLEAR_RFMON; + + /* + * Add this to the list of pcaps to close when we exit. + */ + pcap_add_to_pcaps_to_close(handle); + + return 1; +} +#endif /* IW_MODE_MONITOR */ + +/* + * Try various mechanisms to enter monitor mode. + */ +static int +enter_rfmon_mode(pcap_t *handle, int sock_fd, const char *device) +{ +#if defined(HAVE_LIBNL) || defined(IW_MODE_MONITOR) + int ret; +#endif + +#ifdef HAVE_LIBNL + ret = enter_rfmon_mode_mac80211(handle, sock_fd, device); + if (ret < 0) + return ret; /* error attempting to do so */ + if (ret == 1) + return 1; /* success */ +#endif /* HAVE_LIBNL */ + +#ifdef IW_MODE_MONITOR + ret = enter_rfmon_mode_wext(handle, sock_fd, device); + if (ret < 0) + return ret; /* error attempting to do so */ + if (ret == 1) + return 1; /* success */ +#endif /* IW_MODE_MONITOR */ + + /* + * Either none of the mechanisms we know about work or none + * of those mechanisms are available, so we can't do monitor + * mode. + */ + return 0; +} + +/* + * Find out if we have any form of fragmentation/reassembly offloading. + * + * We do so using SIOCETHTOOL checking for various types of offloading; + * if SIOCETHTOOL isn't defined, or we don't have any #defines for any + * of the types of offloading, there's nothing we can do to check, so + * we just say "no, we don't". + */ +#if defined(SIOCETHTOOL) && (defined(ETHTOOL_GTSO) || defined(ETHTOOL_GUFO) || defined(ETHTOOL_GGSO) || defined(ETHTOOL_GFLAGS) || defined(ETHTOOL_GGRO)) +static int +iface_ethtool_ioctl(pcap_t *handle, int cmd, const char *cmdname) +{ + struct ifreq ifr; + struct ethtool_value eval; + + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, handle->opt.source, sizeof(ifr.ifr_name)); + eval.cmd = cmd; + ifr.ifr_data = (caddr_t)&eval; + if (ioctl(handle->fd, SIOCETHTOOL, &ifr) == -1) { + if (errno == EOPNOTSUPP) { + /* + * OK, let's just return 0, which, in our + * case, either means "no, what we're asking + * about is not enabled" or "all the flags + * are clear (i.e., nothing is enabled)". + */ + return 0; + } + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "%s: SIOETHTOOL(%s) ioctl failed: %s", handle->opt.source, + cmdname, strerror(errno)); + return -1; + } + return eval.data; +} + +static int +iface_get_offload(pcap_t *handle) +{ + int ret; + +#ifdef ETHTOOL_GTSO + ret = iface_ethtool_ioctl(handle, ETHTOOL_GTSO, "ETHTOOL_GTSO"); + if (ret == -1) + return -1; + if (ret) + return 1; /* TCP segmentation offloading on */ +#endif + +#ifdef ETHTOOL_GUFO + ret = iface_ethtool_ioctl(handle, ETHTOOL_GUFO, "ETHTOOL_GUFO"); + if (ret == -1) + return -1; + if (ret) + return 1; /* UDP fragmentation offloading on */ +#endif + +#ifdef ETHTOOL_GGSO + /* + * XXX - will this cause large unsegmented packets to be + * handed to PF_PACKET sockets on transmission? If not, + * this need not be checked. + */ + ret = iface_ethtool_ioctl(handle, ETHTOOL_GGSO, "ETHTOOL_GGSO"); + if (ret == -1) + return -1; + if (ret) + return 1; /* generic segmentation offloading on */ +#endif + +#ifdef ETHTOOL_GFLAGS + ret = iface_ethtool_ioctl(handle, ETHTOOL_GFLAGS, "ETHTOOL_GFLAGS"); + if (ret == -1) + return -1; + if (ret & ETH_FLAG_LRO) + return 1; /* large receive offloading on */ +#endif + +#ifdef ETHTOOL_GGRO + /* + * XXX - will this cause large reassembled packets to be + * handed to PF_PACKET sockets on receipt? If not, + * this need not be checked. + */ + ret = iface_ethtool_ioctl(handle, ETHTOOL_GGRO, "ETHTOOL_GGRO"); + if (ret == -1) + return -1; + if (ret) + return 1; /* generic (large) receive offloading on */ +#endif + + return 0; +} +#else /* SIOCETHTOOL */ +static int +iface_get_offload(pcap_t *handle _U_) +{ + /* + * XXX - do we need to get this information if we don't + * have the ethtool ioctls? If so, how do we do that? + */ + return 0; +} +#endif /* SIOCETHTOOL */ + +#endif /* HAVE_PF_PACKET_SOCKETS */ + +/* ===== Functions to interface to the older kernels ================== */ + +/* + * Try to open a packet socket using the old kernel interface. + * Returns 1 on success and a PCAP_ERROR_ value on an error. + */ +static int +activate_old(pcap_t *handle) +{ + int arptype; + struct ifreq ifr; + const char *device = handle->opt.source; + struct utsname utsname; + int mtu; + + /* Open the socket */ + + handle->fd = socket(PF_INET, SOCK_PACKET, htons(ETH_P_ALL)); + if (handle->fd == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "socket: %s", pcap_strerror(errno)); + if (errno == EPERM || errno == EACCES) { + /* + * You don't have permission to open the + * socket. + */ + return PCAP_ERROR_PERM_DENIED; + } else { + /* + * Other error. + */ + return PCAP_ERROR; + } + } + + /* It worked - we are using the old interface */ + handle->md.sock_packet = 1; + + /* ...which means we get the link-layer header. */ + handle->md.cooked = 0; + + /* Bind to the given device */ + + if (strcmp(device, "any") == 0) { + strncpy(handle->errbuf, "pcap_activate: The \"any\" device isn't supported on 2.0[.x]-kernel systems", + PCAP_ERRBUF_SIZE); + return PCAP_ERROR; + } + if (iface_bind_old(handle->fd, device, handle->errbuf) == -1) + return PCAP_ERROR; + + /* + * Try to get the link-layer type. + */ + arptype = iface_get_arptype(handle->fd, device, handle->errbuf); + if (arptype < 0) + return PCAP_ERROR; + + /* + * Try to find the DLT_ type corresponding to that + * link-layer type. + */ + map_arphrd_to_dlt(handle, arptype, 0); + if (handle->linktype == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "unknown arptype %d", arptype); + return PCAP_ERROR; + } + + /* Go to promisc mode if requested */ + + if (handle->opt.promisc) { + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name)); + if (ioctl(handle->fd, SIOCGIFFLAGS, &ifr) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "SIOCGIFFLAGS: %s", pcap_strerror(errno)); + return PCAP_ERROR; + } + if ((ifr.ifr_flags & IFF_PROMISC) == 0) { + /* + * Promiscuous mode isn't currently on, + * so turn it on, and remember that + * we should turn it off when the + * pcap_t is closed. + */ + + /* + * If we haven't already done so, arrange + * to have "pcap_close_all()" called when + * we exit. + */ + if (!pcap_do_addexit(handle)) { + /* + * "atexit()" failed; don't put + * the interface in promiscuous + * mode, just give up. + */ + return PCAP_ERROR; + } + + ifr.ifr_flags |= IFF_PROMISC; + if (ioctl(handle->fd, SIOCSIFFLAGS, &ifr) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "SIOCSIFFLAGS: %s", + pcap_strerror(errno)); + return PCAP_ERROR; + } + handle->md.must_do_on_close |= MUST_CLEAR_PROMISC; + + /* + * Add this to the list of pcaps + * to close when we exit. + */ + pcap_add_to_pcaps_to_close(handle); + } + } + + /* + * Compute the buffer size. + * + * We're using SOCK_PACKET, so this might be a 2.0[.x] + * kernel, and might require special handling - check. + */ + if (uname(&utsname) < 0 || + strncmp(utsname.release, "2.0", 3) == 0) { + /* + * Either we couldn't find out what kernel release + * this is, or it's a 2.0[.x] kernel. + * + * In the 2.0[.x] kernel, a "recvfrom()" on + * a SOCK_PACKET socket, with MSG_TRUNC set, will + * return the number of bytes read, so if we pass + * a length based on the snapshot length, it'll + * return the number of bytes from the packet + * copied to userland, not the actual length + * of the packet. + * + * This means that, for example, the IP dissector + * in tcpdump will get handed a packet length less + * than the length in the IP header, and will + * complain about "truncated-ip". + * + * So we don't bother trying to copy from the + * kernel only the bytes in which we're interested, + * but instead copy them all, just as the older + * versions of libpcap for Linux did. + * + * The buffer therefore needs to be big enough to + * hold the largest packet we can get from this + * device. Unfortunately, we can't get the MRU + * of the network; we can only get the MTU. The + * MTU may be too small, in which case a packet larger + * than the buffer size will be truncated *and* we + * won't get the actual packet size. + * + * However, if the snapshot length is larger than + * the buffer size based on the MTU, we use the + * snapshot length as the buffer size, instead; + * this means that with a sufficiently large snapshot + * length we won't artificially truncate packets + * to the MTU-based size. + * + * This mess just one of many problems with packet + * capture on 2.0[.x] kernels; you really want a + * 2.2[.x] or later kernel if you want packet capture + * to work well. + */ + mtu = iface_get_mtu(handle->fd, device, handle->errbuf); + if (mtu == -1) + return PCAP_ERROR; + handle->bufsize = MAX_LINKHEADER_SIZE + mtu; + if (handle->bufsize < handle->snapshot) + handle->bufsize = handle->snapshot; + } else { + /* + * This is a 2.2[.x] or later kernel. + * + * We can safely pass "recvfrom()" a byte count + * based on the snapshot length. + */ + handle->bufsize = handle->snapshot; + } + + /* + * Default value for offset to align link-layer payload + * on a 4-byte boundary. + */ + handle->offset = 0; + + return 1; +} + +/* + * Bind the socket associated with FD to the given device using the + * interface of the old kernels. + */ +static int +iface_bind_old(int fd, const char *device, char *ebuf) +{ + struct sockaddr saddr; + int err; + socklen_t errlen = sizeof(err); + + memset(&saddr, 0, sizeof(saddr)); + strncpy(saddr.sa_data, device, sizeof(saddr.sa_data)); + if (bind(fd, &saddr, sizeof(saddr)) == -1) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "bind: %s", pcap_strerror(errno)); + return -1; + } + + /* Any pending errors, e.g., network is down? */ + + if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &err, &errlen) == -1) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "getsockopt: %s", pcap_strerror(errno)); + return -1; + } + + if (err > 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "bind: %s", pcap_strerror(err)); + return -1; + } + + return 0; +} + + +/* ===== System calls available on all supported kernels ============== */ + +/* + * Query the kernel for the MTU of the given interface. + */ +static int +iface_get_mtu(int fd, const char *device, char *ebuf) +{ + struct ifreq ifr; + + if (!device) + return BIGGER_THAN_ALL_MTUS; + + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name)); + + if (ioctl(fd, SIOCGIFMTU, &ifr) == -1) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "SIOCGIFMTU: %s", pcap_strerror(errno)); + return -1; + } + + return ifr.ifr_mtu; +} + +/* + * Get the hardware type of the given interface as ARPHRD_xxx constant. + */ +static int +iface_get_arptype(int fd, const char *device, char *ebuf) +{ + struct ifreq ifr; + + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name)); + + if (ioctl(fd, SIOCGIFHWADDR, &ifr) == -1) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, + "SIOCGIFHWADDR: %s", pcap_strerror(errno)); + if (errno == ENODEV) { + /* + * No such device. + */ + return PCAP_ERROR_NO_SUCH_DEVICE; + } + return PCAP_ERROR; + } + + return ifr.ifr_hwaddr.sa_family; +} + +#ifdef SO_ATTACH_FILTER +static int +fix_program(pcap_t *handle, struct sock_fprog *fcode, int is_mmapped) +{ + size_t prog_size; + register int i; + register struct bpf_insn *p; + struct bpf_insn *f; + int len; + + /* + * Make a copy of the filter, and modify that copy if + * necessary. + */ + prog_size = sizeof(*handle->fcode.bf_insns) * handle->fcode.bf_len; + len = handle->fcode.bf_len; + f = (struct bpf_insn *)malloc(prog_size); + if (f == NULL) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + return -1; + } + memcpy(f, handle->fcode.bf_insns, prog_size); + fcode->len = len; + fcode->filter = (struct sock_filter *) f; + + for (i = 0; i < len; ++i) { + p = &f[i]; + /* + * What type of instruction is this? + */ + switch (BPF_CLASS(p->code)) { + + case BPF_RET: + /* + * It's a return instruction; are we capturing + * in memory-mapped mode? + */ + if (!is_mmapped) { + /* + * No; is the snapshot length a constant, + * rather than the contents of the + * accumulator? + */ + if (BPF_MODE(p->code) == BPF_K) { + /* + * Yes - if the value to be returned, + * i.e. the snapshot length, is + * anything other than 0, make it + * 65535, so that the packet is + * truncated by "recvfrom()", + * not by the filter. + * + * XXX - there's nothing we can + * easily do if it's getting the + * value from the accumulator; we'd + * have to insert code to force + * non-zero values to be 65535. + */ + if (p->k != 0) + p->k = 65535; + } + } + break; + + case BPF_LD: + case BPF_LDX: + /* + * It's a load instruction; is it loading + * from the packet? + */ + switch (BPF_MODE(p->code)) { + + case BPF_ABS: + case BPF_IND: + case BPF_MSH: + /* + * Yes; are we in cooked mode? + */ + if (handle->md.cooked) { + /* + * Yes, so we need to fix this + * instruction. + */ + if (fix_offset(p) < 0) { + /* + * We failed to do so. + * Return 0, so our caller + * knows to punt to userland. + */ + return 0; + } + } + break; + } + break; + } + } + return 1; /* we succeeded */ +} + +static int +fix_offset(struct bpf_insn *p) +{ + /* + * What's the offset? + */ + if (p->k >= SLL_HDR_LEN) { + /* + * It's within the link-layer payload; that starts at an + * offset of 0, as far as the kernel packet filter is + * concerned, so subtract the length of the link-layer + * header. + */ + p->k -= SLL_HDR_LEN; + } else if (p->k == 0) { + /* + * It's the packet type field; map it to the special magic + * kernel offset for that field. + */ + p->k = SKF_AD_OFF + SKF_AD_PKTTYPE; + } else if (p->k == 14) { + /* + * It's the protocol field; map it to the special magic + * kernel offset for that field. + */ + p->k = SKF_AD_OFF + SKF_AD_PROTOCOL; + } else if ((bpf_int32)(p->k) > 0) { + /* + * It's within the header, but it's not one of those + * fields; we can't do that in the kernel, so punt + * to userland. + */ + return -1; + } + return 0; +} + +static int +set_kernel_filter(pcap_t *handle, struct sock_fprog *fcode) +{ + int total_filter_on = 0; + int save_mode; + int ret; + int save_errno; + + /* + * The socket filter code doesn't discard all packets queued + * up on the socket when the filter is changed; this means + * that packets that don't match the new filter may show up + * after the new filter is put onto the socket, if those + * packets haven't yet been read. + * + * This means, for example, that if you do a tcpdump capture + * with a filter, the first few packets in the capture might + * be packets that wouldn't have passed the filter. + * + * We therefore discard all packets queued up on the socket + * when setting a kernel filter. (This isn't an issue for + * userland filters, as the userland filtering is done after + * packets are queued up.) + * + * To flush those packets, we put the socket in read-only mode, + * and read packets from the socket until there are no more to + * read. + * + * In order to keep that from being an infinite loop - i.e., + * to keep more packets from arriving while we're draining + * the queue - we put the "total filter", which is a filter + * that rejects all packets, onto the socket before draining + * the queue. + * + * This code deliberately ignores any errors, so that you may + * get bogus packets if an error occurs, rather than having + * the filtering done in userland even if it could have been + * done in the kernel. + */ + if (setsockopt(handle->fd, SOL_SOCKET, SO_ATTACH_FILTER, + &total_fcode, sizeof(total_fcode)) == 0) { + char drain[1]; + + /* + * Note that we've put the total filter onto the socket. + */ + total_filter_on = 1; + + /* + * Save the socket's current mode, and put it in + * non-blocking mode; we drain it by reading packets + * until we get an error (which is normally a + * "nothing more to be read" error). + */ + save_mode = fcntl(handle->fd, F_GETFL, 0); + if (save_mode != -1 && + fcntl(handle->fd, F_SETFL, save_mode | O_NONBLOCK) >= 0) { + while (recv(handle->fd, &drain, sizeof drain, + MSG_TRUNC) >= 0) + ; + save_errno = errno; + fcntl(handle->fd, F_SETFL, save_mode); + if (save_errno != EAGAIN) { + /* Fatal error */ + reset_kernel_filter(handle); + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "recv: %s", pcap_strerror(save_errno)); + return -2; + } + } + } + + /* + * Now attach the new filter. + */ + ret = setsockopt(handle->fd, SOL_SOCKET, SO_ATTACH_FILTER, + fcode, sizeof(*fcode)); + if (ret == -1 && total_filter_on) { + /* + * Well, we couldn't set that filter on the socket, + * but we could set the total filter on the socket. + * + * This could, for example, mean that the filter was + * too big to put into the kernel, so we'll have to + * filter in userland; in any case, we'll be doing + * filtering in userland, so we need to remove the + * total filter so we see packets. + */ + save_errno = errno; + + /* + * XXX - if this fails, we're really screwed; + * we have the total filter on the socket, + * and it won't come off. What do we do then? + */ + reset_kernel_filter(handle); + + errno = save_errno; + } + return ret; +} + +static int +reset_kernel_filter(pcap_t *handle) +{ + /* + * setsockopt() barfs unless it get a dummy parameter. + * valgrind whines unless the value is initialized, + * as it has no idea that setsockopt() ignores its + * parameter. + */ + int dummy = 0; + + return setsockopt(handle->fd, SOL_SOCKET, SO_DETACH_FILTER, + &dummy, sizeof(dummy)); +} +#endif diff --git a/pcap-namedb.h b/pcap-namedb.h new file mode 100644 index 0000000..d0b2231 --- /dev/null +++ b/pcap-namedb.h @@ -0,0 +1,42 @@ +/* + * Copyright (c) 1994, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#) $Header: /tcpdump/master/libpcap/pcap-namedb.h,v 1.13 2006-10-04 18:13:32 guy Exp $ (LBL) + */ + +/* + * For backwards compatibility. + * + * Note to OS vendors: do NOT get rid of this file! Some applications + * might expect to be able to include . + */ +#include diff --git a/pcap-netfilter-linux.c b/pcap-netfilter-linux.c new file mode 100644 index 0000000..f9c6bef --- /dev/null +++ b/pcap-netfilter-linux.c @@ -0,0 +1,468 @@ +/* + * Copyright (c) 2011 Jakub Zawadzki + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "pcap-int.h" + +#ifdef NEED_STRERROR_H +#include "strerror.h" +#endif + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include +#include +#include + +#include "pcap-netfilter-linux.h" + +#define HDR_LENGTH (NLMSG_LENGTH(NLMSG_ALIGN(sizeof(struct nfgenmsg)))) + +#define NFLOG_IFACE "nflog" + +static int +nflog_read_linux(pcap_t *handle, int max_packets, pcap_handler callback, u_char *user) +{ + const unsigned char *buf; + int count = 0; + int len; + + /* ignore interrupt system call error */ + do { + len = recv(handle->fd, handle->buffer, handle->bufsize, 0); + if (handle->break_loop) { + handle->break_loop = 0; + return -2; + } + } while ((len == -1) && (errno == EINTR)); + + if (len < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't receive packet %d:%s", errno, pcap_strerror(errno)); + return -1; + } + + buf = handle->buffer; + while (len >= NLMSG_SPACE(0)) { + const struct nlmsghdr *nlh = (const struct nlmsghdr *) buf; + u_int32_t msg_len; + + if (nlh->nlmsg_len < sizeof(struct nlmsghdr) || len < nlh->nlmsg_len) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Message truncated: (got: %d) (nlmsg_len: %u)", len, nlh->nlmsg_len); + return -1; + } + + if (NFNL_SUBSYS_ID(nlh->nlmsg_type) == NFNL_SUBSYS_ULOG && + NFNL_MSG_TYPE(nlh->nlmsg_type) == NFULNL_MSG_PACKET) + { + const unsigned char *payload = NULL; + struct pcap_pkthdr pkth; + + if (handle->linktype != DLT_NFLOG) { + const struct nfattr *payload_attr = NULL; + + if (nlh->nlmsg_len < HDR_LENGTH) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Malformed message: (nlmsg_len: %u)", nlh->nlmsg_len); + return -1; + } + + if (nlh->nlmsg_len > HDR_LENGTH) { + struct nfattr *attr = NFM_NFA(NLMSG_DATA(nlh)); + int attr_len = nlh->nlmsg_len - NLMSG_ALIGN(HDR_LENGTH); + + while (NFA_OK(attr, attr_len)) { + switch (NFA_TYPE(attr)) { + case NFULA_PAYLOAD: + payload_attr = attr; + break; + } + attr = NFA_NEXT(attr, attr_len); + } + } + + if (payload_attr) { + payload = NFA_DATA(payload_attr); + pkth.len = pkth.caplen = NFA_PAYLOAD(payload_attr); + } + + } else { + payload = NLMSG_DATA(nlh); + pkth.caplen = pkth.len = nlh->nlmsg_len-NLMSG_ALIGN(sizeof(struct nlmsghdr)); + } + + if (payload) { + /* pkth.caplen = min (payload_len, handle->snapshot); */ + + gettimeofday(&pkth.ts, NULL); + if (handle->fcode.bf_insns == NULL || + bpf_filter(handle->fcode.bf_insns, payload, pkth.len, pkth.caplen)) + { + handle->md.packets_read++; + callback(user, &pkth, payload); + count++; + } + } + } + + msg_len = NLMSG_ALIGN(nlh->nlmsg_len); + if (msg_len > len) + msg_len = len; + + len -= msg_len; + buf += msg_len; + } + return count; +} + +static int +netfilter_set_datalink(pcap_t *handle, int dlt) +{ + handle->linktype = dlt; + return 0; +} + +static int +netfilter_stats_linux(pcap_t *handle, struct pcap_stat *stats) +{ + stats->ps_recv = handle->md.packets_read; + stats->ps_drop = 0; + stats->ps_ifdrop = 0; + return 0; +} + +static int +netfilter_inject_linux(pcap_t *handle, const void *buf, size_t size) +{ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "inject not supported on netfilter devices"); + return (-1); +} + +struct my_nfattr { + u_int16_t nfa_len; + u_int16_t nfa_type; + void *data; +}; + +static int +nflog_send_config_msg(const pcap_t *handle, u_int8_t family, u_int16_t res_id, const struct my_nfattr *mynfa) +{ + char buf[1024] __attribute__ ((aligned)); + + struct nlmsghdr *nlh = (struct nlmsghdr *) buf; + struct nfgenmsg *nfg = (struct nfgenmsg *) (buf + sizeof(struct nlmsghdr)); + + struct sockaddr_nl snl; + static unsigned int seq_id; + + if (!seq_id) + seq_id = time(NULL); + ++seq_id; + + nlh->nlmsg_len = NLMSG_LENGTH(sizeof(struct nfgenmsg)); + nlh->nlmsg_type = (NFNL_SUBSYS_ULOG << 8) | NFULNL_MSG_CONFIG; + nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; + nlh->nlmsg_pid = 0; /* to kernel */ + nlh->nlmsg_seq = seq_id; + + nfg->nfgen_family = family; + nfg->version = NFNETLINK_V0; + nfg->res_id = htons(res_id); + + if (mynfa) { + struct nfattr *nfa = (struct nfattr *) (buf + NLMSG_ALIGN(nlh->nlmsg_len)); + + nfa->nfa_type = mynfa->nfa_type; + nfa->nfa_len = NFA_LENGTH(mynfa->nfa_len); + memcpy(NFA_DATA(nfa), mynfa->data, mynfa->nfa_len); + nlh->nlmsg_len = NLMSG_ALIGN(nlh->nlmsg_len) + NFA_ALIGN(nfa->nfa_len); + } + + memset(&snl, 0, sizeof(snl)); + snl.nl_family = AF_NETLINK; + + if (sendto(handle->fd, nlh, nlh->nlmsg_len, 0, (struct sockaddr *) &snl, sizeof(snl)) == -1) + return -1; + + /* waiting for reply loop */ + do { + socklen_t addrlen = sizeof(snl); + int len; + + /* ignore interrupt system call error */ + do { + len = recvfrom(handle->fd, buf, sizeof(buf), 0, (struct sockaddr *) &snl, &addrlen); + } while ((len == -1) && (errno == EINTR)); + + if (len <= 0) + return len; + + if (addrlen != sizeof(snl) || snl.nl_family != AF_NETLINK) { + errno = EINVAL; + return -1; + } + + nlh = (struct nlmsghdr *) buf; + if (snl.nl_pid != 0 || seq_id != nlh->nlmsg_seq) /* if not from kernel or wrong sequence skip */ + continue; + + while (len >= NLMSG_SPACE(0) && NLMSG_OK(nlh, len)) { + if (nlh->nlmsg_type == NLMSG_ERROR || (nlh->nlmsg_type == NLMSG_DONE && nlh->nlmsg_flags & NLM_F_MULTI)) { + if (nlh->nlmsg_len < NLMSG_ALIGN(sizeof(struct nlmsgerr))) { + errno = EBADMSG; + return -1; + } + errno = -(*((int *)NLMSG_DATA(nlh))); + return (errno == 0) ? 0 : -1; + } + nlh = NLMSG_NEXT(nlh, len); + } + } while (1); + + return -1; /* never here */ +} + +static int +nflog_send_config_cmd(const pcap_t *handle, u_int16_t group_id, u_int8_t cmd, u_int8_t family) +{ + struct nfulnl_msg_config_cmd msg; + struct my_nfattr nfa; + + msg.command = cmd; + + nfa.data = &msg; + nfa.nfa_type = NFULA_CFG_CMD; + nfa.nfa_len = sizeof(msg); + + return nflog_send_config_msg(handle, family, group_id, &nfa); +} + +static int +nflog_send_config_mode(const pcap_t *handle, u_int16_t group_id, u_int8_t copy_mode, u_int32_t copy_range) +{ + struct nfulnl_msg_config_mode msg; + struct my_nfattr nfa; + + msg.copy_range = htonl(copy_range); + msg.copy_mode = copy_mode; + + nfa.data = &msg; + nfa.nfa_type = NFULA_CFG_MODE; + nfa.nfa_len = sizeof(msg); + + return nflog_send_config_msg(handle, AF_UNSPEC, group_id, &nfa); +} + +static int +nflog_activate(pcap_t* handle) +{ + const char *dev = handle->opt.source; + unsigned short groups[32]; + int group_count = 0; + int i; + + if (strncmp(dev, NFLOG_IFACE, strlen(NFLOG_IFACE)) == 0) { + dev += strlen(NFLOG_IFACE); + + /* nflog:30,33,42 looks nice, allow it */ + if (*dev == ':') + dev++; + + while (*dev) { + long int group_id; + char *end_dev; + + if (group_count == 32) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Maximum 32 netfilter groups! dev: %s", + handle->opt.source); + return PCAP_ERROR; + } + + group_id = strtol(dev, &end_dev, 0); + if (end_dev != dev) { + if (group_id < 0 || group_id > 65535) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Netfilter group range from 0 to 65535 (got %ld)", + group_id); + return PCAP_ERROR; + } + + groups[group_count++] = (unsigned short) group_id; + dev = end_dev; + } + if (*dev != ',') + break; + dev++; + } + } + + if (*dev) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't get netfilter group(s) index from %s", + handle->opt.source); + return PCAP_ERROR; + } + + /* if no groups, add default: 0 */ + if (!group_count) { + groups[0] = 0; + group_count = 1; + } + + /* Initialize some components of the pcap structure. */ + handle->bufsize = 128 + handle->snapshot; + handle->offset = 0; + handle->linktype = DLT_NFLOG; + handle->read_op = nflog_read_linux; + handle->inject_op = netfilter_inject_linux; + handle->setfilter_op = install_bpf_program; /* no kernel filtering */ + handle->setdirection_op = NULL; + handle->set_datalink_op = NULL; + handle->set_datalink_op = netfilter_set_datalink; + handle->getnonblock_op = pcap_getnonblock_fd; + handle->setnonblock_op = pcap_setnonblock_fd; + handle->stats_op = netfilter_stats_linux; + + /* Create netlink socket */ + handle->fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER); + if (handle->fd < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't create raw socket %d:%s", errno, pcap_strerror(errno)); + return PCAP_ERROR; + } + + handle->dlt_list = (u_int *) malloc(sizeof(u_int) * 2); + if (handle->dlt_list != NULL) { + handle->dlt_list[0] = DLT_NFLOG; + handle->dlt_list[1] = DLT_IPV4; + handle->dlt_count = 2; + } + + handle->buffer = malloc(handle->bufsize); + if (!handle->buffer) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't allocate dump buffer: %s", pcap_strerror(errno)); + goto close_fail; + } + + if (nflog_send_config_cmd(handle, 0, NFULNL_CFG_CMD_PF_UNBIND, AF_INET) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "NFULNL_CFG_CMD_PF_UNBIND: %s", pcap_strerror(errno)); + goto close_fail; + } + + if (nflog_send_config_cmd(handle, 0, NFULNL_CFG_CMD_PF_BIND, AF_INET) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "NFULNL_CFG_CMD_PF_BIND: %s", pcap_strerror(errno)); + goto close_fail; + } + + /* Bind socket to the nflog groups */ + for (i = 0; i < group_count; i++) { + if (nflog_send_config_cmd(handle, groups[i], NFULNL_CFG_CMD_BIND, AF_UNSPEC) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't listen on group group index: %s", pcap_strerror(errno)); + goto close_fail; + } + + if (nflog_send_config_mode(handle, groups[i], NFULNL_COPY_PACKET, handle->snapshot) < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "NFULNL_COPY_PACKET: %s", pcap_strerror(errno)); + goto close_fail; + } + } + + if (handle->opt.rfmon) { + /* + * Monitor mode doesn't apply to netfilter devices. + */ + pcap_cleanup_live_common(handle); + return PCAP_ERROR_RFMON_NOTSUP; + } + + if (handle->opt.buffer_size != 0) { + /* + * Set the socket buffer size to the specified value. + */ + if (setsockopt(handle->fd, SOL_SOCKET, SO_RCVBUF, &handle->opt.buffer_size, sizeof(handle->opt.buffer_size)) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "SO_RCVBUF: %s", pcap_strerror(errno)); + goto close_fail; + } + } + + handle->selectable_fd = handle->fd; + return 0; + +close_fail: + pcap_cleanup_live_common(handle); + return PCAP_ERROR; +} + +pcap_t * +nflog_create(const char *device, char *ebuf) +{ + pcap_t *p; + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return (NULL); + + p->activate_op = nflog_activate; + return (p); +} + +int +netfilter_platform_finddevs(pcap_if_t **alldevsp, char *err_str) +{ + pcap_if_t *found_dev = *alldevsp; + int sock; + + sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER); + if (sock < 0) { + /* if netlink is not supported this is not fatal */ + if (errno == EAFNOSUPPORT || errno == EPROTONOSUPPORT) + return 0; + snprintf(err_str, PCAP_ERRBUF_SIZE, "Can't open netlink socket %d:%s", + errno, pcap_strerror(errno)); + return -1; + } + close(sock); + + if (pcap_add_if(&found_dev, NFLOG_IFACE, 0, "Linux netfilter log (NFLOG) interface", err_str) < 0) + return -1; + return 0; +} + diff --git a/pcap-netfilter-linux.h b/pcap-netfilter-linux.h new file mode 100644 index 0000000..dd76b8a --- /dev/null +++ b/pcap-netfilter-linux.h @@ -0,0 +1,35 @@ +/* + * Copyright (c) 2011 Jakub Zawadzki + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * Prototypes for netlink-related functions + */ +int netfilter_platform_finddevs(pcap_if_t **alldevsp, char *err_str); +pcap_t *nflog_create(const char *device, char *ebuf); diff --git a/pcap-nit.c b/pcap-nit.c new file mode 100644 index 0000000..b799549 --- /dev/null +++ b/pcap-nit.c @@ -0,0 +1,347 @@ +/* + * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-nit.c,v 1.62 2008-04-14 20:40:58 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "pcap-int.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +/* + * The chunk size for NIT. This is the amount of buffering + * done for read calls. + */ +#define CHUNKSIZE (2*1024) + +/* + * The total buffer space used by NIT. + */ +#define BUFSPACE (4*CHUNKSIZE) + +/* Forwards */ +static int nit_setflags(int, int, int, char *); + +static int +pcap_stats_nit(pcap_t *p, struct pcap_stat *ps) +{ + + /* + * "ps_recv" counts packets handed to the filter, not packets + * that passed the filter. As filtering is done in userland, + * this does not include packets dropped because we ran out + * of buffer space. + * + * "ps_drop" presumably counts packets dropped by the socket + * because of flow control requirements or resource exhaustion; + * it doesn't count packets dropped by the interface driver. + * As filtering is done in userland, it counts packets regardless + * of whether they would've passed the filter. + * + * These statistics don't include packets not yet read from the + * kernel by libpcap or packets not yet read from libpcap by the + * application. + */ + *ps = p->md.stat; + return (0); +} + +static int +pcap_read_nit(pcap_t *p, int cnt, pcap_handler callback, u_char *user) +{ + register int cc, n; + register u_char *bp, *cp, *ep; + register struct nit_hdr *nh; + register int caplen; + + cc = p->cc; + if (cc == 0) { + cc = read(p->fd, (char *)p->buffer, p->bufsize); + if (cc < 0) { + if (errno == EWOULDBLOCK) + return (0); + snprintf(p->errbuf, sizeof(p->errbuf), "pcap_read: %s", + pcap_strerror(errno)); + return (-1); + } + bp = p->buffer; + } else + bp = p->bp; + + /* + * Loop through each packet. The increment expression + * rounds up to the next int boundary past the end of + * the previous packet. + */ + n = 0; + ep = bp + cc; + while (bp < ep) { + /* + * Has "pcap_breakloop()" been called? + * If so, return immediately - if we haven't read any + * packets, clear the flag and return -2 to indicate + * that we were told to break out of the loop, otherwise + * leave the flag set, so that the *next* call will break + * out of the loop without having read any packets, and + * return the number of packets we've processed so far. + */ + if (p->break_loop) { + if (n == 0) { + p->break_loop = 0; + return (-2); + } else { + p->cc = ep - bp; + p->bp = bp; + return (n); + } + } + + nh = (struct nit_hdr *)bp; + cp = bp + sizeof(*nh); + + switch (nh->nh_state) { + + case NIT_CATCH: + break; + + case NIT_NOMBUF: + case NIT_NOCLUSTER: + case NIT_NOSPACE: + p->md.stat.ps_drop = nh->nh_dropped; + continue; + + case NIT_SEQNO: + continue; + + default: + snprintf(p->errbuf, sizeof(p->errbuf), + "bad nit state %d", nh->nh_state); + return (-1); + } + ++p->md.stat.ps_recv; + bp += ((sizeof(struct nit_hdr) + nh->nh_datalen + + sizeof(int) - 1) & ~(sizeof(int) - 1)); + + caplen = nh->nh_wirelen; + if (caplen > p->snapshot) + caplen = p->snapshot; + if (bpf_filter(p->fcode.bf_insns, cp, nh->nh_wirelen, caplen)) { + struct pcap_pkthdr h; + h.ts = nh->nh_timestamp; + h.len = nh->nh_wirelen; + h.caplen = caplen; + (*callback)(user, &h, cp); + if (++n >= cnt && cnt > 0) { + p->cc = ep - bp; + p->bp = bp; + return (n); + } + } + } + p->cc = 0; + return (n); +} + +static int +pcap_inject_nit(pcap_t *p, const void *buf, size_t size) +{ + struct sockaddr sa; + int ret; + + memset(&sa, 0, sizeof(sa)); + strncpy(sa.sa_data, device, sizeof(sa.sa_data)); + ret = sendto(p->fd, buf, size, 0, &sa, sizeof(sa)); + if (ret == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send: %s", + pcap_strerror(errno)); + return (-1); + } + return (ret); +} + +static int +nit_setflags(int fd, int promisc, int to_ms, char *ebuf) +{ + struct nit_ioc nioc; + + memset(&nioc, 0, sizeof(nioc)); + nioc.nioc_bufspace = BUFSPACE; + nioc.nioc_chunksize = CHUNKSIZE; + nioc.nioc_typetomatch = NT_ALLTYPES; + nioc.nioc_snaplen = p->snapshot; + nioc.nioc_bufalign = sizeof(int); + nioc.nioc_bufoffset = 0; + + if (to_ms != 0) { + nioc.nioc_flags |= NF_TIMEOUT; + nioc.nioc_timeout.tv_sec = to_ms / 1000; + nioc.nioc_timeout.tv_usec = (to_ms * 1000) % 1000000; + } + if (promisc) + nioc.nioc_flags |= NF_PROMISC; + + if (ioctl(fd, SIOCSNIT, &nioc) < 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "SIOCSNIT: %s", + pcap_strerror(errno)); + return (-1); + } + return (0); +} + +static int +pcap_activate_nit(pcap_t *p) +{ + int fd; + struct sockaddr_nit snit; + + if (p->opt.rfmon) { + /* + * No monitor mode on SunOS 3.x or earlier (no + * Wi-Fi *devices* for the hardware that supported + * them!). + */ + return (PCAP_ERROR_RFMON_NOTSUP); + } + + if (p->snapshot < 96) + /* + * NIT requires a snapshot length of at least 96. + */ + p->snapshot = 96; + + memset(p, 0, sizeof(*p)); + p->fd = fd = socket(AF_NIT, SOCK_RAW, NITPROTO_RAW); + if (fd < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "socket: %s", pcap_strerror(errno)); + goto bad; + } + snit.snit_family = AF_NIT; + (void)strncpy(snit.snit_ifname, p->opt.source, NITIFSIZ); + + if (bind(fd, (struct sockaddr *)&snit, sizeof(snit))) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "bind: %s: %s", snit.snit_ifname, pcap_strerror(errno)); + goto bad; + } + nit_setflags(p->fd, p->opt.promisc, p->md.timeout, p->errbuf); + + /* + * NIT supports only ethernets. + */ + p->linktype = DLT_EN10MB; + + p->bufsize = BUFSPACE; + p->buffer = (u_char *)malloc(p->bufsize); + if (p->buffer == NULL) { + strlcpy(p->errbuf, pcap_strerror(errno), PCAP_ERRBUF_SIZE); + goto bad; + } + + /* + * "p->fd" is a socket, so "select()" should work on it. + */ + p->selectable_fd = p->fd; + + /* + * This is (presumably) a real Ethernet capture; give it a + * link-layer-type list with DLT_EN10MB and DLT_DOCSIS, so + * that an application can let you choose it, in case you're + * capturing DOCSIS traffic that a Cisco Cable Modem + * Termination System is putting out onto an Ethernet (it + * doesn't put an Ethernet header onto the wire, it puts raw + * DOCSIS frames out on the wire inside the low-level + * Ethernet framing). + */ + p->dlt_list = (u_int *) malloc(sizeof(u_int) * 2); + /* + * If that fails, just leave the list empty. + */ + if (p->dlt_list != NULL) { + p->dlt_list[0] = DLT_EN10MB; + p->dlt_list[1] = DLT_DOCSIS; + p->dlt_count = 2; + } + + p->read_op = pcap_read_nit; + p->inject_op = pcap_inject_nit; + p->setfilter_op = install_bpf_program; /* no kernel filtering */ + p->setdirection_op = NULL; /* Not implemented. */ + p->set_datalink_op = NULL; /* can't change data link type */ + p->getnonblock_op = pcap_getnonblock_fd; + p->setnonblock_op = pcap_setnonblock_fd; + p->stats_op = pcap_stats_nit; + + return (0); + bad: + pcap_cleanup_live_common(p); + return (PCAP_ERROR); +} + +pcap_t * +pcap_create(const char *device, char *ebuf) +{ + pcap_t *p; + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return (NULL); + + p->activate_op = pcap_activate_nit; + return (p); +} + +int +pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf) +{ + return (0); +} diff --git a/pcap-null.c b/pcap-null.c new file mode 100644 index 0000000..2d271eb --- /dev/null +++ b/pcap-null.c @@ -0,0 +1,53 @@ +/* + * Copyright (c) 1994, 1995, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-null.c,v 1.22 2008-04-04 19:37:45 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include /* optionally get BSD define */ + +#include + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +#include "pcap-int.h" + +static char nosup[] = "live packet capture not supported on this system"; + +pcap_t * +pcap_create(const char *device, char *ebuf) +{ + (void)strlcpy(ebuf, nosup, PCAP_ERRBUF_SIZE); + return (NULL); +} + +int +pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf) +{ + return (0); +} diff --git a/pcap-pf.c b/pcap-pf.c new file mode 100644 index 0000000..d8326df --- /dev/null +++ b/pcap-pf.c @@ -0,0 +1,604 @@ +/* + * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * packet filter subroutines for tcpdump + * Extraction/creation by Jeffrey Mogul, DECWRL + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-pf.c,v 1.97 2008-04-14 20:40:58 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include +#include +#include +#include +#include + +struct mbuf; +struct rtentry; +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +/* + * Make "pcap.h" not include "pcap/bpf.h"; we are going to include the + * native OS version, as we need various BPF ioctls from it. + */ +#define PCAP_DONT_INCLUDE_PCAP_BPF_H +#include + +#include "pcap-int.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +static int pcap_setfilter_pf(pcap_t *, struct bpf_program *); + +/* + * BUFSPACE is the size in bytes of the packet read buffer. Most tcpdump + * applications aren't going to need more than 200 bytes of packet header + * and the read shouldn't return more packets than packetfilter's internal + * queue limit (bounded at 256). + */ +#define BUFSPACE (200 * 256) + +static int +pcap_read_pf(pcap_t *pc, int cnt, pcap_handler callback, u_char *user) +{ + register u_char *p, *bp; + register int cc, n, buflen, inc; + register struct enstamp *sp; +#ifdef LBL_ALIGN + struct enstamp stamp; +#endif +#ifdef PCAP_FDDIPAD + register int pad; +#endif + + again: + cc = pc->cc; + if (cc == 0) { + cc = read(pc->fd, (char *)pc->buffer + pc->offset, pc->bufsize); + if (cc < 0) { + if (errno == EWOULDBLOCK) + return (0); + if (errno == EINVAL && + lseek(pc->fd, 0L, SEEK_CUR) + pc->bufsize < 0) { + /* + * Due to a kernel bug, after 2^31 bytes, + * the kernel file offset overflows and + * read fails with EINVAL. The lseek() + * to 0 will fix things. + */ + (void)lseek(pc->fd, 0L, SEEK_SET); + goto again; + } + snprintf(pc->errbuf, sizeof(pc->errbuf), "pf read: %s", + pcap_strerror(errno)); + return (-1); + } + bp = pc->buffer + pc->offset; + } else + bp = pc->bp; + /* + * Loop through each packet. + */ + n = 0; +#ifdef PCAP_FDDIPAD + pad = pc->fddipad; +#endif + while (cc > 0) { + /* + * Has "pcap_breakloop()" been called? + * If so, return immediately - if we haven't read any + * packets, clear the flag and return -2 to indicate + * that we were told to break out of the loop, otherwise + * leave the flag set, so that the *next* call will break + * out of the loop without having read any packets, and + * return the number of packets we've processed so far. + */ + if (pc->break_loop) { + if (n == 0) { + pc->break_loop = 0; + return (-2); + } else { + pc->cc = cc; + pc->bp = bp; + return (n); + } + } + if (cc < sizeof(*sp)) { + snprintf(pc->errbuf, sizeof(pc->errbuf), + "pf short read (%d)", cc); + return (-1); + } +#ifdef LBL_ALIGN + if ((long)bp & 3) { + sp = &stamp; + memcpy((char *)sp, (char *)bp, sizeof(*sp)); + } else +#endif + sp = (struct enstamp *)bp; + if (sp->ens_stamplen != sizeof(*sp)) { + snprintf(pc->errbuf, sizeof(pc->errbuf), + "pf short stamplen (%d)", + sp->ens_stamplen); + return (-1); + } + + p = bp + sp->ens_stamplen; + buflen = sp->ens_count; + if (buflen > pc->snapshot) + buflen = pc->snapshot; + + /* Calculate inc before possible pad update */ + inc = ENALIGN(buflen + sp->ens_stamplen); + cc -= inc; + bp += inc; + pc->md.TotPkts++; + pc->md.TotDrops += sp->ens_dropped; + pc->md.TotMissed = sp->ens_ifoverflows; + if (pc->md.OrigMissed < 0) + pc->md.OrigMissed = pc->md.TotMissed; + + /* + * Short-circuit evaluation: if using BPF filter + * in kernel, no need to do it now - we already know + * the packet passed the filter. + * +#ifdef PCAP_FDDIPAD + * Note: the filter code was generated assuming + * that pc->fddipad was the amount of padding + * before the header, as that's what's required + * in the kernel, so we run the filter before + * skipping that padding. +#endif + */ + if (pc->md.use_bpf || + bpf_filter(pc->fcode.bf_insns, p, sp->ens_count, buflen)) { + struct pcap_pkthdr h; + pc->md.TotAccepted++; + h.ts = sp->ens_tstamp; +#ifdef PCAP_FDDIPAD + h.len = sp->ens_count - pad; +#else + h.len = sp->ens_count; +#endif +#ifdef PCAP_FDDIPAD + p += pad; + buflen -= pad; +#endif + h.caplen = buflen; + (*callback)(user, &h, p); + if (++n >= cnt && cnt > 0) { + pc->cc = cc; + pc->bp = bp; + return (n); + } + } + } + pc->cc = 0; + return (n); +} + +static int +pcap_inject_pf(pcap_t *p, const void *buf, size_t size) +{ + int ret; + + ret = write(p->fd, buf, size); + if (ret == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send: %s", + pcap_strerror(errno)); + return (-1); + } + return (ret); +} + +static int +pcap_stats_pf(pcap_t *p, struct pcap_stat *ps) +{ + + /* + * If packet filtering is being done in the kernel: + * + * "ps_recv" counts only packets that passed the filter. + * This does not include packets dropped because we + * ran out of buffer space. (XXX - perhaps it should, + * by adding "ps_drop" to "ps_recv", for compatibility + * with some other platforms. On the other hand, on + * some platforms "ps_recv" counts only packets that + * passed the filter, and on others it counts packets + * that didn't pass the filter....) + * + * "ps_drop" counts packets that passed the kernel filter + * (if any) but were dropped because the input queue was + * full. + * + * "ps_ifdrop" counts packets dropped by the network + * inteface (regardless of whether they would have passed + * the input filter, of course). + * + * If packet filtering is not being done in the kernel: + * + * "ps_recv" counts only packets that passed the filter. + * + * "ps_drop" counts packets that were dropped because the + * input queue was full, regardless of whether they passed + * the userland filter. + * + * "ps_ifdrop" counts packets dropped by the network + * inteface (regardless of whether they would have passed + * the input filter, of course). + * + * These statistics don't include packets not yet read from + * the kernel by libpcap, but they may include packets not + * yet read from libpcap by the application. + */ + ps->ps_recv = p->md.TotAccepted; + ps->ps_drop = p->md.TotDrops; + ps->ps_ifdrop = p->md.TotMissed - p->md.OrigMissed; + return (0); +} + +/* + * We include the OS's , not our "pcap/bpf.h", so we probably + * don't get DLT_DOCSIS defined. + */ +#ifndef DLT_DOCSIS +#define DLT_DOCSIS 143 +#endif + +static int +pcap_activate_pf(pcap_t *p) +{ + short enmode; + int backlog = -1; /* request the most */ + struct enfilter Filter; + struct endevp devparams; + + /* + * Initially try a read/write open (to allow the inject + * method to work). If that fails due to permission + * issues, fall back to read-only. This allows a + * non-root user to be granted specific access to pcap + * capabilities via file permissions. + * + * XXX - we should have an API that has a flag that + * controls whether to open read-only or read-write, + * so that denial of permission to send (or inability + * to send, if sending packets isn't supported on + * the device in question) can be indicated at open + * time. + * + * XXX - we assume here that "pfopen()" does not, in fact, modify + * its argument, even though it takes a "char *" rather than a + * "const char *" as its first argument. That appears to be + * the case, at least on Digital UNIX 4.0. + */ + p->fd = pfopen(p->opt.source, O_RDWR); + if (p->fd == -1 && errno == EACCES) + p->fd = pfopen(p->opt.source, O_RDONLY); + if (p->fd < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "pf open: %s: %s\n\ +your system may not be properly configured; see the packetfilter(4) man page\n", + p->opt.source, pcap_strerror(errno)); + goto bad; + } + p->md.OrigMissed = -1; + enmode = ENTSTAMP|ENBATCH|ENNONEXCL; + if (p->opt.promisc) + enmode |= ENPROMISC; + if (ioctl(p->fd, EIOCMBIS, (caddr_t)&enmode) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "EIOCMBIS: %s", + pcap_strerror(errno)); + goto bad; + } +#ifdef ENCOPYALL + /* Try to set COPYALL mode so that we see packets to ourself */ + enmode = ENCOPYALL; + (void)ioctl(p->fd, EIOCMBIS, (caddr_t)&enmode);/* OK if this fails */ +#endif + /* set the backlog */ + if (ioctl(p->fd, EIOCSETW, (caddr_t)&backlog) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "EIOCSETW: %s", + pcap_strerror(errno)); + goto bad; + } + /* discover interface type */ + if (ioctl(p->fd, EIOCDEVP, (caddr_t)&devparams) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "EIOCDEVP: %s", + pcap_strerror(errno)); + goto bad; + } + /* HACK: to compile prior to Ultrix 4.2 */ +#ifndef ENDT_FDDI +#define ENDT_FDDI 4 +#endif + switch (devparams.end_dev_type) { + + case ENDT_10MB: + p->linktype = DLT_EN10MB; + p->offset = 2; + /* + * This is (presumably) a real Ethernet capture; give it a + * link-layer-type list with DLT_EN10MB and DLT_DOCSIS, so + * that an application can let you choose it, in case you're + * capturing DOCSIS traffic that a Cisco Cable Modem + * Termination System is putting out onto an Ethernet (it + * doesn't put an Ethernet header onto the wire, it puts raw + * DOCSIS frames out on the wire inside the low-level + * Ethernet framing). + */ + p->dlt_list = (u_int *) malloc(sizeof(u_int) * 2); + /* + * If that fails, just leave the list empty. + */ + if (p->dlt_list != NULL) { + p->dlt_list[0] = DLT_EN10MB; + p->dlt_list[1] = DLT_DOCSIS; + p->dlt_count = 2; + } + break; + + case ENDT_FDDI: + p->linktype = DLT_FDDI; + break; + +#ifdef ENDT_SLIP + case ENDT_SLIP: + p->linktype = DLT_SLIP; + break; +#endif + +#ifdef ENDT_PPP + case ENDT_PPP: + p->linktype = DLT_PPP; + break; +#endif + +#ifdef ENDT_LOOPBACK + case ENDT_LOOPBACK: + /* + * It appears to use Ethernet framing, at least on + * Digital UNIX 4.0. + */ + p->linktype = DLT_EN10MB; + p->offset = 2; + break; +#endif + +#ifdef ENDT_TRN + case ENDT_TRN: + p->linktype = DLT_IEEE802; + break; +#endif + + default: + /* + * XXX - what about ENDT_IEEE802? The pfilt.h header + * file calls this "IEEE 802 networks (non-Ethernet)", + * but that doesn't specify a specific link layer type; + * it could be 802.4, or 802.5 (except that 802.5 is + * ENDT_TRN), or 802.6, or 802.11, or.... That's why + * DLT_IEEE802 was hijacked to mean Token Ring in various + * BSDs, and why we went along with that hijacking. + * + * XXX - what about ENDT_HDLC and ENDT_NULL? + * Presumably, as ENDT_OTHER is just "Miscellaneous + * framing", there's not much we can do, as that + * doesn't specify a particular type of header. + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "unknown data-link type %u", devparams.end_dev_type); + goto bad; + } + /* set truncation */ +#ifdef PCAP_FDDIPAD + if (p->linktype == DLT_FDDI) { + p->fddipad = PCAP_FDDIPAD; + + /* packetfilter includes the padding in the snapshot */ + p->snapshot += PCAP_FDDIPAD; + } else + p->fddipad = 0; +#endif + if (ioctl(p->fd, EIOCTRUNCATE, (caddr_t)&p->snapshot) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "EIOCTRUNCATE: %s", + pcap_strerror(errno)); + goto bad; + } + /* accept all packets */ + memset(&Filter, 0, sizeof(Filter)); + Filter.enf_Priority = 37; /* anything > 2 */ + Filter.enf_FilterLen = 0; /* means "always true" */ + if (ioctl(p->fd, EIOCSETF, (caddr_t)&Filter) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "EIOCSETF: %s", + pcap_strerror(errno)); + goto bad; + } + + if (p->md.timeout != 0) { + struct timeval timeout; + timeout.tv_sec = p->md.timeout / 1000; + timeout.tv_usec = (p->md.timeout * 1000) % 1000000; + if (ioctl(p->fd, EIOCSRTIMEOUT, (caddr_t)&timeout) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "EIOCSRTIMEOUT: %s", + pcap_strerror(errno)); + goto bad; + } + } + + p->bufsize = BUFSPACE; + p->buffer = (u_char*)malloc(p->bufsize + p->offset); + if (p->buffer == NULL) { + strlcpy(p->errbuf, pcap_strerror(errno), PCAP_ERRBUF_SIZE); + goto bad; + } + + /* + * "select()" and "poll()" work on packetfilter devices. + */ + p->selectable_fd = p->fd; + + p->read_op = pcap_read_pf; + p->inject_op = pcap_inject_pf; + p->setfilter_op = pcap_setfilter_pf; + p->setdirection_op = NULL; /* Not implemented. */ + p->set_datalink_op = NULL; /* can't change data link type */ + p->getnonblock_op = pcap_getnonblock_fd; + p->setnonblock_op = pcap_setnonblock_fd; + p->stats_op = pcap_stats_pf; + + return (0); + bad: + pcap_cleanup_live_common(p); + return (PCAP_ERROR); +} + +pcap_t * +pcap_create(const char *device, char *ebuf) +{ + pcap_t *p; + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return (NULL); + + p->activate_op = pcap_activate_pf; + return (p); +} + +int +pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf) +{ + return (0); +} + +static int +pcap_setfilter_pf(pcap_t *p, struct bpf_program *fp) +{ + struct bpf_version bv; + + /* + * See if BIOCVERSION works. If not, we assume the kernel doesn't + * support BPF-style filters (it's not documented in the bpf(7) + * or packetfiler(7) man pages, but the code used to fail if + * BIOCSETF worked but BIOCVERSION didn't, and I've seen it do + * kernel filtering in DU 4.0, so presumably BIOCVERSION works + * there, at least). + */ + if (ioctl(p->fd, BIOCVERSION, (caddr_t)&bv) >= 0) { + /* + * OK, we have the version of the BPF interpreter; + * is it the same major version as us, and the same + * or better minor version? + */ + if (bv.bv_major == BPF_MAJOR_VERSION && + bv.bv_minor >= BPF_MINOR_VERSION) { + /* + * Yes. Try to install the filter. + */ + if (ioctl(p->fd, BIOCSETF, (caddr_t)fp) < 0) { + snprintf(p->errbuf, sizeof(p->errbuf), + "BIOCSETF: %s", pcap_strerror(errno)); + return (-1); + } + + /* + * OK, that succeeded. We're doing filtering in + * the kernel. (We assume we don't have a + * userland filter installed - that'd require + * a previous version check to have failed but + * this one to succeed.) + * + * XXX - this message should be supplied to the + * application as a warning of some sort, + * except that if it's a GUI application, it's + * not clear that it should be displayed in + * a window to annoy the user. + */ + fprintf(stderr, "tcpdump: Using kernel BPF filter\n"); + p->md.use_bpf = 1; + + /* + * Discard any previously-received packets, + * as they might have passed whatever filter + * was formerly in effect, but might not pass + * this filter (BIOCSETF discards packets buffered + * in the kernel, so you can lose packets in any + * case). + */ + p->cc = 0; + return (0); + } + + /* + * We can't use the kernel's BPF interpreter; don't give + * up, just log a message and be inefficient. + * + * XXX - this should really be supplied to the application + * as a warning of some sort. + */ + fprintf(stderr, + "tcpdump: Requires BPF language %d.%d or higher; kernel is %d.%d\n", + BPF_MAJOR_VERSION, BPF_MINOR_VERSION, + bv.bv_major, bv.bv_minor); + } + + /* + * We couldn't do filtering in the kernel; do it in userland. + */ + if (install_bpf_program(p, fp) < 0) + return (-1); + + /* + * XXX - this message should be supplied by the application as + * a warning of some sort. + */ + fprintf(stderr, "tcpdump: Filtering in user process\n"); + p->md.use_bpf = 0; + return (0); +} diff --git a/pcap-savefile.manfile.in b/pcap-savefile.manfile.in new file mode 100644 index 0000000..907559c --- /dev/null +++ b/pcap-savefile.manfile.in @@ -0,0 +1,127 @@ +'\" t +.\" @(#) $Header: /tcpdump/master/libpcap/pcap-savefile.manfile.in,v 1.2 2008-10-24 07:33:50 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP-SAVEFILE @MAN_FILE_FORMATS@ "21 October 2008" +.SH NAME +pcap-savefile \- libpcap savefile format +.SH DESCRIPTION +NOTE: applications and libraries should, if possible, use libpcap to +read savefiles, rather than having their own code to read savefiles. +If, in the future, a new file format is supported by libpcap, +applications and libraries using libpcap to read savefiles will be able +to read the new format of savefiles, but applications and libraries +using their own code to read savefiles will have to be changed to +support the new file format. +.PP +``Savefiles'' read and written by libpcap and applications using libpcap +start with a per-file header. The format of the per-file header is: +.RS +.TS +box; +c s +c | c +c s. +Magic number +_ +Major version Minor version +_ +Time zone offset +_ +Time stamp accuracy +_ +Snapshot length +_ +Link-layer header type +.TE +.RE +.PP +All fields in the per-file header are in the byte order of the host +writing the file. The first field in the per-file header is a 4-byte +magic number, with the value 0xa1b2c3d4. The magic number, when read by +a host with the same byte order as the host that wrote the file, will +have the value 0xa1b2c3d4, and, when read by a host with the opposite +byte order as the host that wrote the file, will have the value +0xd4c3b2a1. That allows software reading the file to determine whether +the byte order of the host that wrote the file is the same as the byte +order of the host on which the file is being read, and thus whether the +values in the per-file and per-packet headers need to be byte-swapped. +.PP +Following this are: +.IP +A 2-byte file format major version number; the current version number is +2. +.IP +A 2-byte file format minor version number; the current version number is +4. +.IP +A 4-byte time zone offset; this is always 0. +.IP +A 4-byte number giving the accuracy of time stamps in the file; this is +always 0. +.IP +A 4-byte number giving the "snapshot length" of the capture; packets +longer than the snapshot length are truncated to the snapshot length, so +that, if the snapshot length is +.IR N , +only the first +.I N +bytes of a packet longer than +.I N +bytes will be saved in the capture. +.IP +a 4-byte number giving the link-layer header type for packets in the +capture; see +.BR pcap-linktype (@MAN_MISC_INFO@) +for the +.B LINKTYPE_ +values that can appear in this field. +.PP +Following the per-file header are zero or more packets; each packet +begins with a per-packet header, which is immediately followed by the +raw packet data. The format of the per-packet header is: +.RS +.TS +box; +c. +Time stamp, seconds value +_ +Time stamp, microseconds value +_ +Length of captured packet data +_ +Un-truncated length of the packet data +.TE +.RE +.PP +All fields in the per-packet header are in the byte order of the host +writing the file. The per-packet header begins with a time stamp giving +the approximate time the packet was captured; the time stamp consists of +a 4-byte value, giving the time in seconds since January 1, 1970, +00:00:00 UTC, followed by a 4-byte value, giving the time in +microseconds since that second. Following that are a 4-byte value +giving the number of bytes of captured data that follow the per-packet +header and a 4-byte value giving the number of bytes that would have +been present had the packet not been truncated by the snapshot length. +The two lengths will be equal if the number of bytes of packet data are +less than or equal to the snapshot length. +.SH SEE ALSO +pcap(3PCAP), pcap-linktype(@MAN_MISC_INFO@) diff --git a/pcap-septel.c b/pcap-septel.c new file mode 100644 index 0000000..8cc2403 --- /dev/null +++ b/pcap-septel.c @@ -0,0 +1,290 @@ +/* + * pcap-septel.c: Packet capture interface for Intel/Septel card. + * + * The functionality of this code attempts to mimic that of pcap-linux as much + * as possible. This code is compiled in several different ways depending on + * whether SEPTEL_ONLY and HAVE_SEPTEL_API are defined. If HAVE_SEPTEL_API is + * not defined it should not get compiled in, otherwise if SEPTEL_ONLY is + * defined then the 'septel_' function calls are renamed to 'pcap_' + * equivalents. If SEPTEL_ONLY is not defined then nothing is altered - the + * septel_ functions will be called as required from their + * pcap-linux/equivalents. + * + * Authors: Gilbert HOYEK (gil_hoyek@hotmail.com), Elias M. KHOURY + * (+961 3 485243) + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-septel.c,v 1.4 2008-04-14 20:40:58 guy Exp $"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include + +#include +#include +#include + +#include "pcap-int.h" + +#include +#include +#include +#include +#include +#include + +#ifdef HAVE_SEPTEL_API +#include +#include +#include +#include +#include +#endif /* HAVE_SEPTEL_API */ + +#ifdef SEPTEL_ONLY +/* This code is required when compiling for a Septel device only. */ +#include "pcap-septel.h" + +/* Replace septel function names with pcap equivalent. */ +#define septel_create pcap_create +#define septel_platform_finddevs pcap_platform_finddevs +#endif /* SEPTEL_ONLY */ + +static int septel_setfilter(pcap_t *p, struct bpf_program *fp); +static int septel_stats(pcap_t *p, struct pcap_stat *ps); +static int septel_setnonblock(pcap_t *p, int nonblock, char *errbuf); + +/* + * Read at most max_packets from the capture queue and call the callback + * for each of them. Returns the number of packets handled, -1 if an + * error occured, or -2 if we were told to break out of the loop. + */ +static int septel_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user) { + + HDR *h; + MSG *m; + int processed = 0 ; + int t = 0 ; + + /* identifier for the message queue of the module(upe) from which we are capturing + * packets.These IDs are defined in system.txt . By default it is set to 0x2d + * so change it to 0xdd for technical reason and therefore the module id for upe becomes: + * LOCAL 0xdd * upe - Example user part task */ + unsigned int id = 0xdd; + + /* process the packets */ + do { + + unsigned short packet_len = 0; + int caplen = 0; + int counter = 0; + struct pcap_pkthdr pcap_header; + u_char *dp ; + + /* + * Has "pcap_breakloop()" been called? + */ +loop: + if (p->break_loop) { + /* + * Yes - clear the flag that indicates that + * it has, and return -2 to indicate that + * we were told to break out of the loop. + */ + p->break_loop = 0; + return -2; + } + + /*repeat until a packet is read + *a NULL message means : + * when no packet is in queue or all packets in queue already read */ + do { + /* receive packet in non-blocking mode + * GCT_grab is defined in the septel library software */ + h = GCT_grab(id); + + m = (MSG*)h; + /* a couter is added here to avoid an infinite loop + * that will cause our capture program GUI to freeze while waiting + * for a packet*/ + counter++ ; + + } + while ((m == NULL)&& (counter< 100)) ; + + if (m != NULL) { + + t = h->type ; + + /* catch only messages with type = 0xcf00 or 0x8f01 corrsponding to ss7 messages*/ + /* XXX = why not use API_MSG_TX_REQ for 0xcf00 and API_MSG_RX_IND + * for 0x8f01? */ + if ((t != 0xcf00) && (t != 0x8f01)) { + relm(h); + goto loop ; + } + + /* XXX - is API_MSG_RX_IND for an MTP2 or MTP3 message? */ + dp = get_param(m);/* get pointer to MSG parameter area (m->param) */ + packet_len = m->len; + caplen = p->snapshot ; + + + if (caplen > packet_len) { + + caplen = packet_len; + } + /* Run the packet filter if there is one. */ + if ((p->fcode.bf_insns == NULL) || bpf_filter(p->fcode.bf_insns, dp, packet_len, caplen)) { + + + /* get a time stamp , consisting of : + * + * pcap_header.ts.tv_sec: + * ---------------------- + * a UNIX format time-in-seconds when he packet was captured, + * i.e. the number of seconds since Epoch time (January 1,1970, 00:00:00 GMT) + * + * pcap_header.ts.tv_usec : + * ------------------------ + * the number of microseconds since that second + * when the packet was captured + */ + + (void)gettimeofday(&pcap_header.ts, NULL); + + /* Fill in our own header data */ + pcap_header.caplen = caplen; + pcap_header.len = packet_len; + + /* Count the packet. */ + p->md.stat.ps_recv++; + + /* Call the user supplied callback function */ + callback(user, &pcap_header, dp); + + processed++ ; + + } + /* after being processed the packet must be + *released in order to receive another one */ + relm(h); + }else + processed++; + + } + while (processed < cnt) ; + + return processed ; +} + + +static int +septel_inject(pcap_t *handle, const void *buf _U_, size_t size _U_) +{ + strlcpy(handle->errbuf, "Sending packets isn't supported on Septel cards", + PCAP_ERRBUF_SIZE); + return (-1); +} + +/* + * Activate a handle for a live capture from the given Septel device. Always pass a NULL device + * The promisc flag is ignored because Septel cards have built-in tracing. + * The timeout is also ignored as it is not supported in hardware. + * + * See also pcap(3). + */ +static pcap_t *septel_activate(pcap_t* handle) { + /* Initialize some components of the pcap structure. */ + handle->linktype = DLT_MTP2; + + handle->bufsize = 0; + + /* + * "select()" and "poll()" don't work on Septel queues + */ + handle->selectable_fd = -1; + + handle->read_op = septel_read; + handle->inject_op = septel_inject; + handle->setfilter_op = septel_setfilter; + handle->set_datalink_op = NULL; /* can't change data link type */ + handle->getnonblock_op = pcap_getnonblock_fd; + handle->setnonblock_op = septel_setnonblock; + handle->stats_op = septel_stats; + + return 0; +} + +pcap_t *septel_create(const char *device, char *ebuf) { + pcap_t *p; + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return NULL; + + p->activate_op = septel_activate; + return p; +} + +static int septel_stats(pcap_t *p, struct pcap_stat *ps) { + /*p->md.stat.ps_recv = 0;*/ + /*p->md.stat.ps_drop = 0;*/ + + *ps = p->md.stat; + + return 0; +} + + +int +septel_platform_finddevs(pcap_if_t **devlistp, char *errbuf) +{ +unsigned char *p; + const char description[512]= "Intel/Septel device"; + char name[512]="septel" ; + int ret = 0; + pcap_add_if(devlistp,name,0,description,errbuf); + + return (ret); +} + + +/* + * Installs the given bpf filter program in the given pcap structure. There is + * no attempt to store the filter in kernel memory as that is not supported + * with Septel cards. + */ +static int septel_setfilter(pcap_t *p, struct bpf_program *fp) { + if (!p) + return -1; + if (!fp) { + strncpy(p->errbuf, "setfilter: No filter specified", + sizeof(p->errbuf)); + return -1; + } + + /* Make our private copy of the filter */ + + if (install_bpf_program(p, fp) < 0) { + snprintf(p->errbuf, sizeof(p->errbuf), + "malloc: %s", pcap_strerror(errno)); + return -1; + } + + p->md.use_bpf = 0; + + return (0); +} + + +static int +septel_setnonblock(pcap_t *p, int nonblock, char *errbuf) +{ + return (0); +} diff --git a/pcap-septel.h b/pcap-septel.h new file mode 100644 index 0000000..227d056 --- /dev/null +++ b/pcap-septel.h @@ -0,0 +1,15 @@ +/* + * pcap-septel.c: Packet capture interface for Intel Septel card + * + * The functionality of this code attempts to mimic that of pcap-linux as much + * as possible. This code is only needed when compiling in the Intel/Septel + * card code at the same time as another type of device. + * + * Authors: Gilbert HOYEK (gil_hoyek@hotmail.com), Elias M. KHOURY + * (+961 3 485343); + * + * @(#) $Header: /tcpdump/master/libpcap/pcap-septel.h,v 1.2 2008-04-04 19:37:45 guy Exp $ + */ + +pcap_t *septel_create(const char *device, char *ebuf); + diff --git a/pcap-sita.c b/pcap-sita.c new file mode 100644 index 0000000..971f8b0 --- /dev/null +++ b/pcap-sita.c @@ -0,0 +1,980 @@ +/* + * pcap-sita.c: Packet capture interface additions for SITA ACN devices + * + * Copyright (c) 2007 Fulko Hew, SITA INC Canada, Inc + * + * License: BSD + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. The names of the authors may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + + /* $Id: pcap-sita.c */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "pcap-int.h" + +#include "pcap-sita.h" + + /* non-configureable manifests follow */ + +#define IOP_SNIFFER_PORT 49152 /* TCP port on the IOP used for 'distributed pcap' usage */ +#define MAX_LINE_SIZE 255 /* max size of a buffer/line in /etc/hosts we allow */ +#define MAX_CHASSIS 8 /* number of chassis in an ACN site */ +#define MAX_GEOSLOT 8 /* max number of access units in an ACN site */ + +#define FIND 0 +#define LIVE 1 + +typedef struct iface { + struct iface *next; /* a pointer to the next interface */ + char *name; /* this interface's name on Wireshark */ + char *IOPname; /* this interface's name on an IOP */ + uint32_t iftype; /* the type of interface (DLT values) */ +} iface_t; + +typedef struct unit { + char *ip; /* this unit's IP address (as extracted from /etc/hosts) */ + int fd; /* the connection to this unit (if it exists) */ + int find_fd; /* a big kludge to avoid my programming limitations since I could have this unit open for findalldevs purposes */ + int first_time; /* 0 = just opened via acn_open_live(), ie. the first time, NZ = nth time */ + struct sockaddr_in *serv_addr; /* the address control block for comms to this unit */ + int chassis; + int geoslot; + iface_t *iface; /* a pointer to a linked list of interface structures */ + char *imsg; /* a pointer to an inbound message */ + int len; /* the current size of the inbound message */ +} unit_t; + +static char *errorString; +static unit_t units[MAX_CHASSIS+1][MAX_GEOSLOT+1]; /* we use indexes of 1 through 8, but we reserve/waste index 0 */ +static fd_set readfds; /* a place to store the file descriptors for the connections to the IOPs */ +static fd_set working_set; +static int max_fs; +static char static_buf[32]; + +pcap_if_t *acn_if_list; /* pcap's list of available interfaces */ + +static void dump_interface_list(void) { + pcap_if_t *iff; + pcap_addr_t *addr; + int longest_name_len = 0; + char *n, *d, *f; + int if_number = 0; + + iff = acn_if_list; + while (iff) { + if (iff->name && (strlen(iff->name) > longest_name_len)) longest_name_len = strlen(iff->name); + iff = iff->next; + } + iff = acn_if_list; + printf("Interface List:\n"); + while (iff) { + n = (iff->name) ? iff->name : ""; + d = (iff->description) ? iff->description : ""; + f = (iff->flags == PCAP_IF_LOOPBACK) ? "L" : ""; + printf("%3d: %*s %s '%s'\n", if_number++, longest_name_len, n, f, d); + addr = iff->addresses; + while (addr) { + printf("%*s ", (5 + longest_name_len), ""); /* add some indentation */ + printf("%15s ", (addr->addr) ? inet_ntoa(((struct sockaddr_in *)addr->addr)->sin_addr) : ""); + printf("%15s ", (addr->netmask) ? inet_ntoa(((struct sockaddr_in *)addr->netmask)->sin_addr) : ""); + printf("%15s ", (addr->broadaddr) ? inet_ntoa(((struct sockaddr_in *)addr->broadaddr)->sin_addr) : ""); + printf("%15s ", (addr->dstaddr) ? inet_ntoa(((struct sockaddr_in *)addr->dstaddr)->sin_addr) : ""); + printf("\n"); + addr = addr->next; + } + iff = iff->next; + } +} + +static void dump(unsigned char *ptr, int i, int indent) { + fprintf(stderr, "%*s", indent, " "); + for (; i > 0; i--) { + fprintf(stderr, "%2.2x ", *ptr++); + } + fprintf(stderr, "\n"); +} + +static void dump_interface_list_p(void) { + pcap_if_t *iff; + pcap_addr_t *addr; + int if_number = 0; + + iff = acn_if_list; + printf("Interface Pointer @ %p is %p:\n", &acn_if_list, iff); + while (iff) { + printf("%3d: %p %p next: %p\n", if_number++, iff->name, iff->description, iff->next); + dump((unsigned char *)iff, sizeof(pcap_if_t), 5); + addr = iff->addresses; + while (addr) { + printf(" %p %p %p %p, next: %p\n", addr->addr, addr->netmask, addr->broadaddr, addr->dstaddr, addr->next); + dump((unsigned char *)addr, sizeof(pcap_addr_t), 10); + addr = addr->next; + } + iff = iff->next; + } +} + +static void dump_unit_table(void) { + int chassis, geoslot; + iface_t *p; + + printf("%c:%c %s %s\n", 'C', 'S', "fd", "IP Address"); + for (chassis = 0; chassis <= MAX_CHASSIS; chassis++) { + for (geoslot = 0; geoslot <= MAX_GEOSLOT; geoslot++) { + if (units[chassis][geoslot].ip != NULL) + printf("%d:%d %2d %s\n", chassis, geoslot, units[chassis][geoslot].fd, units[chassis][geoslot].ip); + p = units[chassis][geoslot].iface; + while (p) { + char *n = (p->name) ? p->name : ""; + char *i = (p->IOPname) ? p->IOPname : ""; + p = p->next; + printf(" %12s -> %12s\n", i, n); + } + } + } +} + +static int find_unit_by_fd(int fd, int *chassis, int *geoslot, unit_t **unit_ptr) { + int c, s; + + for (c = 0; c <= MAX_CHASSIS; c++) { + for (s = 0; s <= MAX_GEOSLOT; s++) { + if (units[c][s].fd == fd || units[c][s].find_fd == fd) { + if (chassis) *chassis = c; + if (geoslot) *geoslot = s; + if (unit_ptr) *unit_ptr = &units[c][s]; + return 1; + } + } + } + return 0; +} + +static int read_client_nbytes(int fd, int count, unsigned char *buf) { + unit_t *u; + int chassis, geoslot; + int len; + + find_unit_by_fd(fd, &chassis, &geoslot, &u); + while (count) { + if ((len = recv(fd, buf, count, 0)) <= 0) return -1; /* read in whatever data was sent to us */ + count -= len; + buf += len; + } /* till we have everything we are looking for */ + return 0; +} + +static void empty_unit_iface(unit_t *u) { + iface_t *p, *cur; + + cur = u->iface; + while (cur) { /* loop over all the interface entries */ + if (cur->name) free(cur->name); /* throwing away the contents if they exist */ + if (cur->IOPname) free(cur->IOPname); + p = cur->next; + free(cur); /* then throw away the structure itself */ + cur = p; + } + u->iface = 0; /* and finally remember that there are no remaining structure */ +} + +static void empty_unit(int chassis, int geoslot) { + unit_t *u = &units[chassis][geoslot]; + + empty_unit_iface(u); + if (u->imsg) { /* then if an inbound message buffer exists */ + u->imsg = (char *)realloc(u->imsg, 1); /* and re-allocate the old large buffer into a new small one */ + } +} + +static void empty_unit_table(void) { + int chassis, geoslot; + + for (chassis = 0; chassis <= MAX_CHASSIS; chassis++) { + for (geoslot = 0; geoslot <= MAX_GEOSLOT; geoslot++) { + if (units[chassis][geoslot].ip != NULL) { + free(units[chassis][geoslot].ip); /* get rid of the malloc'ed space that holds the IP address */ + units[chassis][geoslot].ip = 0; /* then set the pointer to NULL */ + } + empty_unit(chassis, geoslot); + } + } +} + +static char *find_nth_interface_name(int n) { + int chassis, geoslot; + iface_t *p; + char *last_name = 0; + + if (n < 0) n = 0; /* ensure we are working with a valid number */ + for (chassis = 0; chassis <= MAX_CHASSIS; chassis++) { /* scan the table... */ + for (geoslot = 0; geoslot <= MAX_GEOSLOT; geoslot++) { + if (units[chassis][geoslot].ip != NULL) { + p = units[chassis][geoslot].iface; + while (p) { /* and all interfaces... */ + if (p->IOPname) last_name = p->name; /* remembering the last name found */ + if (n-- == 0) return last_name; /* and if we hit the instance requested */ + p = p->next; + } + } + } + } + /* if we couldn't fine the selected entry */ + if (last_name) return last_name; /* ... but we did have at least one entry... return the last entry found */ + return ""; /* ... but if there wasn't any entry... return an empty string instead */ +} + +int acn_parse_hosts_file(char *errbuf) { /* returns: -1 = error, 0 = OK */ + FILE *fp; + char buf[MAX_LINE_SIZE]; + char *ptr, *ptr2; + int pos; + int chassis, geoslot; + unit_t *u; + + empty_unit_table(); + if ((fp = fopen("/etc/hosts", "r")) == NULL) { /* try to open the hosts file and if it fails */ + snprintf(errbuf, PCAP_ERRBUF_SIZE, "Cannot open '/etc/hosts' for reading."); /* return the nohostsfile error response */ + return -1; + } + while (fgets(buf, MAX_LINE_SIZE-1, fp)) { /* while looping over the file */ + + pos = strcspn(buf, "#\n\r"); /* find the first comment character or EOL */ + *(buf + pos) = '\0'; /* and clobber it and anything that follows it */ + + pos = strspn(buf, " \t"); /* then find the first non-white space */ + if (pos == strlen(buf)) /* if there is nothing but white space on the line */ + continue; /* ignore that empty line */ + ptr = buf + pos; /* and skip over any of that leading whitespace */ + + if ((ptr2 = strstr(ptr, "_I_")) == NULL) /* skip any lines that don't have names that look like they belong to IOPs */ + continue; + if (*(ptr2 + 4) != '_') /* and skip other lines that have names that don't look like ACN components */ + continue; + *(ptr + strcspn(ptr, " \t")) = '\0'; /* null terminate the IP address so its a standalone string */ + + chassis = *(ptr2 + 3) - '0'; /* extract the chassis number */ + geoslot = *(ptr2 + 5) - '0'; /* and geo-slot number */ + if (chassis < 1 || chassis > MAX_CHASSIS || + geoslot < 1 || geoslot > MAX_GEOSLOT) { /* if the chassis and/or slot numbers appear to be bad... */ + snprintf(errbuf, PCAP_ERRBUF_SIZE, "Invalid ACN name in '/etc/hosts'."); /* warn the user */ + continue; /* and ignore the entry */ + } + if ((ptr2 = (char *)malloc(strlen(ptr) + 1)) == NULL) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); + continue; + } + strcpy(ptr2, ptr); /* copy the IP address into our malloc'ed memory */ + u = &units[chassis][geoslot]; + u->ip = ptr2; /* and remember the whole shebang */ + u->chassis = chassis; + u->geoslot = geoslot; + } + fclose(fp); + if (*errbuf) return -1; + else return 0; +} + +static int open_with_IOP(unit_t *u, int flag) { + int sockfd; + char *ip; + + if (u->serv_addr == NULL) { + u->serv_addr = malloc(sizeof(struct sockaddr_in)); + } + ip = u->ip; + bzero((char *)u->serv_addr, sizeof(struct sockaddr_in)); + u->serv_addr->sin_family = AF_INET; + u->serv_addr->sin_addr.s_addr = inet_addr(ip); + u->serv_addr->sin_port = htons(IOP_SNIFFER_PORT); + + if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) { + fprintf(stderr, "pcap can't open a socket for connecting to IOP at %s\n", ip); + return 0; + } + if (connect(sockfd, (struct sockaddr *)u->serv_addr, sizeof(struct sockaddr_in)) < 0) { + fprintf(stderr, "pcap can't connect to IOP at %s\n", ip); + return 0; + } + if (flag == LIVE) u->fd = sockfd; + else u->find_fd = sockfd; + u->first_time = 0; + return sockfd; /* return the non-zero file descriptor as a 'success' indicator */ +} + +static void close_with_IOP(int chassis, int geoslot, int flag) { + int *id; + + if (flag == LIVE) id = &units[chassis][geoslot].fd; + else id = &units[chassis][geoslot].find_fd; + + if (*id) { /* this was the last time, so... if we are connected... */ + close(*id); /* disconnect us */ + *id = 0; /* and forget that the descriptor exists because we are not open */ + } +} + +static void pcap_cleanup_acn(pcap_t *handle) { + int chassis, geoslot; + unit_t *u; + + if (find_unit_by_fd(handle->fd, &chassis, &geoslot, &u) == 0) + return; + close_with_IOP(chassis, geoslot, LIVE); + if (u) + u->first_time = 0; + pcap_cleanup_live_common(handle); +} + +static void send_to_fd(int fd, int len, unsigned char *str) { + int nwritten; + int chassis, geoslot; + + while (len > 0) { + if ((nwritten = write(fd, str, len)) <= 0) { + find_unit_by_fd(fd, &chassis, &geoslot, NULL); + if (units[chassis][geoslot].fd == fd) close_with_IOP(chassis, geoslot, LIVE); + else if (units[chassis][geoslot].find_fd == fd) close_with_IOP(chassis, geoslot, FIND); + empty_unit(chassis, geoslot); + return; + } + len -= nwritten; + str += nwritten; + } +} + +static void acn_freealldevs(void) { + + pcap_if_t *iff, *next_iff; + pcap_addr_t *addr, *next_addr; + + for (iff = acn_if_list; iff != NULL; iff = next_iff) { + next_iff = iff->next; + for (addr = iff->addresses; addr != NULL; addr = next_addr) { + next_addr = addr->next; + if (addr->addr) free(addr->addr); + if (addr->netmask) free(addr->netmask); + if (addr->broadaddr) free(addr->broadaddr); + if (addr->dstaddr) free(addr->dstaddr); + free(addr); + } + if (iff->name) free(iff->name); + if (iff->description) free(iff->description); + free(iff); + } +} + +static char *nonUnified_port_num(unit_t *u, int IOPportnum) { + + sprintf(static_buf, "%d_%d", u->chassis, u->geoslot); + return static_buf; +} + +static char *unified_port_num(unit_t *u, int IOPportnum) { + int portnum; + + portnum = ((u->chassis - 1) * 64) + ((u->geoslot - 1) * 8) + IOPportnum + 1; + sprintf(static_buf, "%d", portnum); + return static_buf; +} + +static char *translate_IOP_to_pcap_name(unit_t *u, char *IOPname, bpf_u_int32 iftype) { + iface_t *iface_ptr, *iface; + char *name; + char buf[32]; + char *proto; + char *port; + int IOPportnum = 0; + + iface = malloc(sizeof(iface_t)); /* get memory for a structure */ + bzero((char *)iface, sizeof(iface_t)); + + iface->iftype = iftype; /* remember the interface type of this interface */ + + name = malloc(strlen(IOPname) + 1); /* get memory for the IOP's name */ + strcpy(name, IOPname); /* and copy it in */ + iface->IOPname = name; /* and stick it into the structure */ + + if (strncmp(IOPname, "lo", 2) == 0) { + IOPportnum = atoi(&IOPname[2]); + switch (iftype) { + case DLT_EN10MB: proto = "lo"; port = nonUnified_port_num(u, IOPportnum); break; + default: proto = "???"; port = unified_port_num(u, IOPportnum); break; + } + } else if (strncmp(IOPname, "eth", 3) == 0) { + IOPportnum = atoi(&IOPname[3]); + switch (iftype) { + case DLT_EN10MB: proto = "eth"; port = nonUnified_port_num(u, IOPportnum); break; + default: proto = "???"; port = unified_port_num(u, IOPportnum); break; + } + } else if (strncmp(IOPname, "wan", 3) == 0) { + IOPportnum = atoi(&IOPname[3]); + switch (iftype) { + case DLT_SITA: proto = "wan"; port = unified_port_num(u, IOPportnum); break; + default: proto = "???"; port = unified_port_num(u, IOPportnum); break; + } + } + + sprintf(buf, "%s_%s", proto, port); /* compose the user's name for that IOP port name */ + name = malloc(strlen(buf) + 1); /* get memory for that name */ + strcpy(name, buf); /* and copy it in */ + iface->name = name; /* and stick it into the structure */ + + if (u->iface == 0) { /* if this is the first name */ + u->iface = iface; /* stick this entry at the head of the list */ + } else { + iface_ptr = u->iface; + while (iface_ptr->next) { /* othewise scan the list */ + iface_ptr = iface_ptr->next; /* till we're at the last entry */ + } + iface_ptr->next = iface; /* then tack this entry on the end of the list */ + } + return iface->name; +} + +static int if_sort(char *s1, char *s2) { + char *s1_p2, *s2_p2; + char str1[MAX_LINE_SIZE], str2[MAX_LINE_SIZE]; + int s1_p1_len, s2_p1_len; + int retval; + + if ((s1_p2 = strchr(s1, '_'))) { /* if an underscore is found... */ + s1_p1_len = s1_p2 - s1; /* the prefix length is the difference in pointers */ + s1_p2++; /* the suffix actually starts _after_ the underscore */ + } else { /* otherwise... */ + s1_p1_len = strlen(s1); /* the prefix length is the length of the string itself */ + s1_p2 = 0; /* and there is no suffix */ + } + if ((s2_p2 = strchr(s2, '_'))) { /* now do the same for the second string */ + s2_p1_len = s2_p2 - s2; + s2_p2++; + } else { + s2_p1_len = strlen(s2); + s2_p2 = 0; + } + strncpy(str1, s1, (s1_p1_len > sizeof(str1)) ? s1_p1_len : sizeof(str1)); *(str1 + s1_p1_len) = 0; + strncpy(str2, s2, (s2_p1_len > sizeof(str2)) ? s2_p1_len : sizeof(str2)); *(str2 + s2_p1_len) = 0; + retval = strcmp(str1, str2); + if (retval != 0) return retval; /* if they are not identical, then we can quit now and return the indication */ + return strcmp(s1_p2, s2_p2); /* otherwise we return the result of comparing the 2nd half of the string */ +} + +static void sort_if_table(void) { + pcap_if_t *p1, *p2, *prev, *temp; + int has_swapped; + + if (!acn_if_list) return; /* nothing to do if the list is empty */ + + while (1) { + p1 = acn_if_list; /* start at the head of the list */ + prev = 0; + has_swapped = 0; + while ((p2 = p1->next)) { + if (if_sort(p1->name, p2->name) > 0) { + if (prev) { /* we are swapping things that are _not_ at the head of the list */ + temp = p2->next; + prev->next = p2; + p2->next = p1; + p1->next = temp; + } else { /* special treatment if we are swapping with the head of the list */ + temp = p2->next; + acn_if_list= p2; + p2->next = p1; + p1->next = temp; + } + p1 = p2; + prev = p1; + has_swapped = 1; + } + prev = p1; + p1 = p1->next; + } + if (has_swapped == 0) + return; + } + return; +} + +static int process_client_data (char *errbuf) { /* returns: -1 = error, 0 = OK */ + int chassis, geoslot; + unit_t *u; + pcap_if_t *iff, *prev_iff; + pcap_addr_t *addr, *prev_addr; + char *ptr; + int address_count; + struct sockaddr_in *s; + char *newname; + bpf_u_int32 interfaceType; + unsigned char flags; + + prev_iff = 0; + for (chassis = 0; chassis <= MAX_CHASSIS; chassis++) { + for (geoslot = 0; geoslot <= MAX_GEOSLOT; geoslot++) { /* now loop over all the devices */ + u = &units[chassis][geoslot]; + empty_unit_iface(u); + ptr = u->imsg; /* point to the start of the msg for this IOP */ + while (ptr < (u->imsg + u->len)) { + if ((iff = malloc(sizeof(pcap_if_t))) == NULL) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); + return -1; + } + bzero((char *)iff, sizeof(pcap_if_t)); + if (acn_if_list == 0) acn_if_list = iff; /* remember the head of the list */ + if (prev_iff) prev_iff->next = iff; /* insert a forward link */ + + if (*ptr) { /* if there is a count for the name */ + if ((iff->name = malloc(*ptr + 1)) == NULL) { /* get that amount of space */ + snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); + return -1; + } + memcpy(iff->name, (ptr + 1), *ptr); /* copy the name into the malloc'ed space */ + *(iff->name + *ptr) = 0; /* and null terminate the string */ + ptr += *ptr; /* now move the pointer forwards by the length of the count plus the length of the string */ + } + ptr++; + + if (*ptr) { /* if there is a count for the description */ + if ((iff->description = malloc(*ptr + 1)) == NULL) { /* get that amount of space */ + snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); + return -1; + } + memcpy(iff->description, (ptr + 1), *ptr); /* copy the name into the malloc'ed space */ + *(iff->description + *ptr) = 0; /* and null terminate the string */ + ptr += *ptr; /* now move the pointer forwards by the length of the count plus the length of the string */ + } + ptr++; + + interfaceType = ntohl(*(bpf_u_int32 *)ptr); + ptr += 4; /* skip over the interface type */ + + flags = *ptr++; + if (flags) iff->flags = PCAP_IF_LOOPBACK; /* if this is a loopback style interface, lets mark it as such */ + + address_count = *ptr++; + + prev_addr = 0; + while (address_count--) { + if ((addr = malloc(sizeof(pcap_addr_t))) == NULL) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); + return -1; + } + bzero((char *)addr, sizeof(pcap_addr_t)); + if (iff->addresses == 0) iff->addresses = addr; + if (prev_addr) prev_addr->next = addr; /* insert a forward link */ + if (*ptr) { /* if there is a count for the address */ + if ((s = malloc(sizeof(struct sockaddr_in))) == NULL) { /* get that amount of space */ + snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); + return -1; + } + bzero((char *)s, sizeof(struct sockaddr_in)); + addr->addr = (struct sockaddr *)s; + s->sin_family = AF_INET; + s->sin_addr.s_addr = *(bpf_u_int32 *)(ptr + 1); /* copy the address in */ + ptr += *ptr; /* now move the pointer forwards according to the specified length of the address */ + } + ptr++; /* then forwards one more for the 'length of the address' field */ + if (*ptr) { /* process any netmask */ + if ((s = malloc(sizeof(struct sockaddr_in))) == NULL) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); + return -1; + } + bzero((char *)s, sizeof(struct sockaddr_in)); + addr->netmask = (struct sockaddr *)s; + s->sin_family = AF_INET; + s->sin_addr.s_addr = *(bpf_u_int32*)(ptr + 1); + ptr += *ptr; + } + ptr++; + if (*ptr) { /* process any broadcast address */ + if ((s = malloc(sizeof(struct sockaddr_in))) == NULL) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); + return -1; + } + bzero((char *)s, sizeof(struct sockaddr_in)); + addr->broadaddr = (struct sockaddr *)s; + s->sin_family = AF_INET; + s->sin_addr.s_addr = *(bpf_u_int32*)(ptr + 1); + ptr += *ptr; + } + ptr++; + if (*ptr) { /* process any destination address */ + if ((s = malloc(sizeof(struct sockaddr_in))) == NULL) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); + return -1; + } + bzero((char *)s, sizeof(struct sockaddr_in)); + addr->dstaddr = (struct sockaddr *)s; + s->sin_family = AF_INET; + s->sin_addr.s_addr = *(bpf_u_int32*)(ptr + 1); + ptr += *ptr; + } + ptr++; + prev_addr = addr; + } + prev_iff = iff; + + newname = translate_IOP_to_pcap_name(u, iff->name, interfaceType); /* add a translation entry and get a point to the mangled name */ + if ((iff->name = realloc(iff->name, strlen(newname) + 1)) == NULL) { /* we now re-write the name stored in the interface list */ + snprintf(errbuf, PCAP_ERRBUF_SIZE, "realloc: %s", pcap_strerror(errno)); + return -1; + } + strcpy(iff->name, newname); /* to this new name */ + } + } + } + return 0; +} + +static int read_client_data (int fd) { + unsigned char buf[256]; + int chassis, geoslot; + unit_t *u; + int len; + + find_unit_by_fd(fd, &chassis, &geoslot, &u); + + if ((len = recv(fd, buf, sizeof(buf), 0)) <= 0) return 0; /* read in whatever data was sent to us */ + + if ((u->imsg = realloc(u->imsg, (u->len + len))) == NULL) /* extend the buffer for the new data */ + return 0; + memcpy((u->imsg + u->len), buf, len); /* append the new data */ + u->len += len; + return 1; +} + +static void wait_for_all_answers(void) { + int retval; + struct timeval tv; + int fd; + int chassis, geoslot; + + tv.tv_sec = 2; + tv.tv_usec = 0; + + while (1) { + int flag = 0; + for (fd = 0; fd <= max_fs; fd++) { /* scan the list of descriptors we may be listening to */ + if (FD_ISSET(fd, &readfds)) flag = 1; /* and see if there are any still set */ + } + if (flag == 0) return; /* we are done, when they are all gone */ + + memcpy(&working_set, &readfds, sizeof(readfds)); /* otherwise, we still have to listen for more stuff, till we timeout */ + retval = select(max_fs + 1, &working_set, NULL, NULL, &tv); + if (retval == -1) { /* an error occured !!!!! */ + return; + } else if (retval == 0) { /* timeout occured, so process what we've got sofar and return */ + printf("timeout\n"); + return; + } else { + for (fd = 0; fd <= max_fs; fd++) { /* scan the list of things to do, and do them */ + if (FD_ISSET(fd, &working_set)) { + if (read_client_data(fd) == 0) { /* if the socket has closed */ + FD_CLR(fd, &readfds); /* and descriptors we listen to for errors */ + find_unit_by_fd(fd, &chassis, &geoslot, NULL); + close_with_IOP(chassis, geoslot, FIND); /* and close out connection to him */ + } + } + } + } + } +} + +static char *get_error_response(int fd, char *errbuf) { /* return a pointer on error, NULL on no error */ + char byte; + int len = 0; + + while (1) { + recv(fd, &byte, 1, 0); /* read another byte in */ + if (errbuf && (len++ < PCAP_ERRBUF_SIZE)) { /* and if there is still room in the buffer */ + *errbuf++ = byte; /* stick it in */ + *errbuf = '\0'; /* ensure the string is null terminated just in case we might exceed the buffer's size */ + } + if (byte == '\0') { + if (len > 1) { return errbuf; } + else { return NULL; } + } + } +} + +int acn_findalldevs(char *errbuf) { /* returns: -1 = error, 0 = OK */ + int chassis, geoslot; + unit_t *u; + + FD_ZERO(&readfds); + max_fs = 0; + for (chassis = 0; chassis <= MAX_CHASSIS; chassis++) { + for (geoslot = 0; geoslot <= MAX_GEOSLOT; geoslot++) { + u = &units[chassis][geoslot]; + if (u->ip && (open_with_IOP(u, FIND))) { /* connect to the remote IOP */ + send_to_fd(u->find_fd, 1, (unsigned char *)"\0"); + if (get_error_response(u->find_fd, errbuf)) + close_with_IOP(chassis, geoslot, FIND); + else { + if (u->find_fd > max_fs) + max_fs = u->find_fd; /* remember the highest number currently in use */ + FD_SET(u->find_fd, &readfds); /* we are going to want to read this guy's response to */ + u->len = 0; + send_to_fd(u->find_fd, 1, (unsigned char *)"Q"); /* this interface query request */ + } + } + } + } + wait_for_all_answers(); + if (process_client_data(errbuf)) + return -1; + sort_if_table(); + return 0; +} + +static int pcap_stats_acn(pcap_t *handle, struct pcap_stat *ps) { + unsigned char buf[12]; + + send_to_fd(handle->fd, 1, (unsigned char *)"S"); /* send the get_stats command to the IOP */ + + if (read_client_nbytes(handle->fd, sizeof(buf), buf) == -1) return -1; /* try reading the required bytes */ + + ps->ps_recv = ntohl(*(uint32_t *)&buf[0]); /* break the buffer into its three 32 bit components */ + ps->ps_drop = ntohl(*(uint32_t *)&buf[4]); + ps->ps_ifdrop = ntohl(*(uint32_t *)&buf[8]); + + return 0; +} + +static int acn_open_live(const char *name, char *errbuf, int *linktype) { /* returns 0 on error, else returns the file descriptor */ + int chassis, geoslot; + unit_t *u; + iface_t *p; + pcap_if_t *alldevsp; + + pcap_findalldevs(&alldevsp, errbuf); + for (chassis = 0; chassis <= MAX_CHASSIS; chassis++) { /* scan the table... */ + for (geoslot = 0; geoslot <= MAX_GEOSLOT; geoslot++) { + u = &units[chassis][geoslot]; + if (u->ip != NULL) { + p = u->iface; + while (p) { /* and all interfaces... */ + if (p->IOPname && p->name && (strcmp(p->name, name) == 0)) { /* and if we found the interface we want... */ + *linktype = p->iftype; + open_with_IOP(u, LIVE); /* start a connection with that IOP */ + send_to_fd(u->fd, strlen(p->IOPname)+1, (unsigned char *)p->IOPname); /* send the IOP's interface name, and a terminating null */ + if (get_error_response(u->fd, errbuf)) { + return -1; + } + return u->fd; /* and return that open descriptor */ + } + p = p->next; + } + } + } + } + return -1; /* if the interface wasn't found, return an error */ +} + +static void acn_start_monitor(int fd, int snaplen, int timeout, int promiscuous, int direction) { + unsigned char buf[8]; + unit_t *u; + + //printf("acn_start_monitor()\n"); // fulko + find_unit_by_fd(fd, NULL, NULL, &u); + if (u->first_time == 0) { + buf[0] = 'M'; + *(uint32_t *)&buf[1] = htonl(snaplen); + buf[5] = timeout; + buf[6] = promiscuous; + buf[7] = direction; + //printf("acn_start_monitor() first time\n"); // fulko + send_to_fd(fd, 8, buf); /* send the start monitor command with its parameters to the IOP */ + u->first_time = 1; + } + //printf("acn_start_monitor() complete\n"); // fulko +} + +static int pcap_inject_acn(pcap_t *p, const void *buf _U_, size_t size _U_) { + strlcpy(p->errbuf, "Sending packets isn't supported on ACN adapters", + PCAP_ERRBUF_SIZE); + return (-1); +} + +static int pcap_setfilter_acn(pcap_t *handle, struct bpf_program *bpf) { + int fd = handle->fd; + int count; + struct bpf_insn *p; + uint16_t shortInt; + uint32_t longInt; + + send_to_fd(fd, 1, (unsigned char *)"F"); /* BPF filter follows command */ + count = bpf->bf_len; + longInt = htonl(count); + send_to_fd(fd, 4, (unsigned char *)&longInt); /* send the instruction sequence count */ + p = bpf->bf_insns; + while (count--) { /* followed by the list of instructions */ + shortInt = htons(p->code); + longInt = htonl(p->k); + send_to_fd(fd, 2, (unsigned char *)&shortInt); + send_to_fd(fd, 1, (unsigned char *)&p->jt); + send_to_fd(fd, 1, (unsigned char *)&p->jf); + send_to_fd(fd, 4, (unsigned char *)&longInt); + p++; + } + if (get_error_response(fd, NULL)) + return -1; + return 0; +} + +static int pcap_setdirection_acn(pcap_t *handle, pcap_direction_t d) { + snprintf(handle->errbuf, sizeof(handle->errbuf), + "Setting direction is not supported on ACN adapters"); + return -1; +} + +static int acn_read_n_bytes_with_timeout(pcap_t *handle, int count) { + struct timeval tv; + int retval, fd; + fd_set r_fds; + fd_set w_fds; + u_char *bp; + int len = 0; + int offset = 0; + + tv.tv_sec = 5; + tv.tv_usec = 0; + + fd = handle->fd; + FD_ZERO(&r_fds); + FD_SET(fd, &r_fds); + memcpy(&w_fds, &r_fds, sizeof(r_fds)); + bp = handle->bp; + while (count) { + retval = select(fd + 1, &w_fds, NULL, NULL, &tv); + if (retval == -1) { /* an error occured !!!!! */ +// fprintf(stderr, "error during packet data read\n"); + return -1; /* but we need to return a good indication to prevent unneccessary popups */ + } else if (retval == 0) { /* timeout occured, so process what we've got sofar and return */ +// fprintf(stderr, "timeout during packet data read\n"); + return -1; + } else { + if ((len = recv(fd, (bp + offset), count, 0)) <= 0) { +// fprintf(stderr, "premature exit during packet data rx\n"); + return -1; + } + count -= len; + offset += len; + } + } + return 0; +} + +static int pcap_read_acn(pcap_t *handle, int max_packets, pcap_handler callback, u_char *user) { + #define HEADER_SIZE (4 * 4) + unsigned char packet_header[HEADER_SIZE]; + struct pcap_pkthdr pcap_header; + + //printf("pcap_read_acn()\n"); // fulko + acn_start_monitor(handle->fd, handle->snapshot, handle->md.timeout, handle->md.clear_promisc, handle->direction); /* maybe tell him to start monitoring */ + //printf("pcap_read_acn() after start monitor\n"); // fulko + + handle->bp = packet_header; + if (acn_read_n_bytes_with_timeout(handle, HEADER_SIZE) == -1) return 0; /* try to read a packet header in so we can get the sizeof the packet data */ + + pcap_header.ts.tv_sec = ntohl(*(uint32_t *)&packet_header[0]); /* tv_sec */ + pcap_header.ts.tv_usec = ntohl(*(uint32_t *)&packet_header[4]); /* tv_usec */ + pcap_header.caplen = ntohl(*(uint32_t *)&packet_header[8]); /* caplen */ + pcap_header.len = ntohl(*(uint32_t *)&packet_header[12]); /* len */ + + handle->bp = handle->buffer + handle->offset; /* start off the receive pointer at the right spot */ + if (acn_read_n_bytes_with_timeout(handle, pcap_header.caplen) == -1) return 0; /* then try to read in the rest of the data */ + + callback(user, &pcap_header, handle->bp); /* call the user supplied callback function */ + return 1; +} + +static int pcap_activate_sita(pcap_t *handle) { + int fd; + + if (handle->opt.rfmon) { + /* + * No monitor mode on SITA devices (they're not Wi-Fi + * devices). + */ + return PCAP_ERROR_RFMON_NOTSUP; + } + + /* Initialize some components of the pcap structure. */ + + handle->inject_op = pcap_inject_acn; + handle->setfilter_op = pcap_setfilter_acn; + handle->setdirection_op = pcap_setdirection_acn; + handle->set_datalink_op = NULL; /* can't change data link type */ + handle->getnonblock_op = pcap_getnonblock_fd; + handle->setnonblock_op = pcap_setnonblock_fd; + handle->cleanup_op = pcap_cleanup_acn; + handle->read_op = pcap_read_acn; + handle->stats_op = pcap_stats_acn; + + fd = acn_open_live(handle->opt.source, handle->errbuf, + &handle->linktype); + if (fd == -1) + return PCAP_ERROR; + handle->md.clear_promisc = handle->md.promisc; + handle->fd = fd; + handle->bufsize = handle->snapshot; + + /* Allocate the buffer */ + + handle->buffer = malloc(handle->bufsize + handle->offset); + if (!handle->buffer) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + pcap_cleanup_acn(handle); + return PCAP_ERROR; + } + + /* + * "handle->fd" is a socket, so "select()" and "poll()" + * should work on it. + */ + handle->selectable_fd = handle->fd; + + return 0; +} + +pcap_t *pcap_create(const char *device, char *ebuf) { + pcap_t *p; + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return (NULL); + + p->activate_op = pcap_activate_sita; + return (p); +} diff --git a/pcap-sita.h b/pcap-sita.h new file mode 100644 index 0000000..b232ee2 --- /dev/null +++ b/pcap-sita.h @@ -0,0 +1,10 @@ +/* + * pcap-sita.h: Packet capture interface for SITA WAN devices + * + * Authors: Fulko Hew (fulko.hew@sita.aero) (+1 905 6815570); + * + * @(#) $Header: /tcpdump/master/libpcap/pcap-sita.h + */ + +extern int acn_parse_hosts_file(char *errbuf); +extern int acn_findalldevs(char *errbuf); diff --git a/pcap-sita.html b/pcap-sita.html new file mode 100644 index 0000000..97408d8 --- /dev/null +++ b/pcap-sita.html @@ -0,0 +1,943 @@ + + + + + + + + +
+ A "Distributed Pcap" for
Remote Monitoring LANs & WANs
+ (Design Notes for the SITA ACN device) + 		+ Fulko Hew
SITA INC Canada, Inc.
Revised: October 2, 2007 +
+ + +

SUMMARY

+
    + Note: This document is part of the libpcap Git and was derived from 'pcap.3' (circa Aug/07). +

    + The ACN provides a customized/distributed version of this library that alows SMPs to + interact with the various IOPs within the site providing a standard mechanism + to capture LAN and WAN message traffic. +

    +

    + + + + + + + + + +
    SMPThe Supervisory Management Processor where Wireshark (or equivalent) + runs in conjuction with a libpcap front-end.
    IOPI/O Processors where the monitored ports exist in conjunction + with a custom device driver/libpcap back-end.
    +
    +

    + Each IOP will be capable of supporting multiple connections from an SMP + enabling monitoring of more than one interface at a time, each through + its own seperate connection. The IOP is responsible to ensure and report + an error if any attempt is made to monitor the same interface more than once. +

    + There are three applications that will be supported by the ACN version of libpcap. + They each use a slightly different mode for looping/capturing and termination + as summarized in the following table: +

    +

    + + + + + + + + + + + + + + +
    Application Capture Termination
    wiresharkpcap_dispatch(all packets in one buffer of capture only)pcap_breakloop()
    tsharkpcap_dispatch(one buffer of capture only)Since a CTRL-C was used to terminate the application, pcap_breakloop() is never called.
    tcpdumppcap_loop(all packets in the next buffer, and loop forever)pcap_breakloop()
    +
    +

    + Note: In all cases, the termination of capturing is always (apparently) followed by + pcap_close(). Pcap_breakloop() is only used to stop/suspend looping/processing, + and upon close interpretation of the function definitions, it is possible to resume + capturing following a pcap_breakloop() without any re-initialization. +

    +

    ACN Limitations

    +
      +
    1. Monitoring of backup IOPs is not currently supported. +
    2. Ethernet interfaces cannot be monitored in promiscuous mode. +
    + +
+ +

ROUTINES

+
    + The following list of functions is the sub-set of Pcap functions that have been + altered/enhanced to support the ACN remote monitoring facility. The remainder of the Pcap + functions continue to perform their duties un-altered. Libpcap only supports this + mode of operation if it has been configured/compiled for SITA/ACN support. +

    +

      + pcap_findalldevs
      + pcap_freealldevs
      + pcap_open_live
      + pcap_close
      + pcap_setfilter
      + pcap_dispatch
      + pcap_loop
      + pcap_next
      + pcap_next_ex
      + pcap_stats
      +
    + + These subroutines have been modified for the ACN specific distributed and remote monitoring + ability perform the following basic functions. More detail is provided in the + "SMP/IOP Inter-Process Communication Protocol" section. +

    + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    pcap_open_live()Used to obtain a packet capture descriptor to look at packets on the network.
    + + + + + + +
    SMP -> IOP + The SMP will open a connection to the selected IOP on its 'sniffer' port + to ensure it is available. It sends a null terminated string identifying + the interface to be monitored. +
    IOP -> SMP + After any required processing is complete, the IOP will return a + null terminated string containing an error message if one occured. + If no error occured, a empty string is still returned. + Errors are: +
      +
    • "Interface (xxx) does not exist." +
    • "Interface (xxx) not configured." +
    • "Interface (xxx) already being monitored." +
    +
    pcap_findalldevs()It constructs a list of network devices that can be opened with pcap_open_live().
    + + + + + + + + + + + + + + + +
    SMP + It obtains a list of IOPs currently available (via /etc/hosts). +
    SMP -> IOP + The SMP will sequentially open a connection to each IOP on its 'sniffer' port to ensure + the IOP is available. + It sends a null terminated empty interface ID followed by the query request command. +
    IOP -> SMPThe IOP returns an error response and its list of devices. +
    SMP -> IOP + The SMP closes the TCP connection with each IOP. +
    SMP + The SMP adds the received information to its internal structure. +
    pcap_freealldevs()Used to free a list allocated by pcap_findalldevs().
    + + + +
    SMP + The SMP frees the structure it built as a result of the previous + invocation of pcap_findalldevs(). +
    pcap_dispatch()Used to collect and process packets.
    + + + + + + + + + + + + +
    SMP -> IOP + On the first invocation of pcap_dispatch(), pcap_loop(), or pcap_next(), or pcap_next_ex() following a pcap_open_live(), + the SMP will pass down the monitor start command and various parameters the IOP should use. +
    IOP -> SMP + The IOP now sends a stream of captured data. +
    SMP + The SMP will read the reverse channel of the connection between the SMP and the + IOP that provides the captured data (via 'p->read_op' which is 'pcap_read_linux()' + until the select() call returns a 'no more data' indication. + It will the process (at most) the next 'cnt' packets and invoke the specified + callback function for each packet processed. +
    IOP + The IOP continues to listen for additional commands as well as capturing and forwarding data to the SMP. +
    pcap_loop() + Is similar to pcap_dispatch() except it keeps reading packets until + the requested number of packets are processed or an error occurs. +
    + + + + + + + + + + + + +
    SMP -> IOP + On the first invocation of pcap_dispatch(), pcap_loop(), or pcap_next(), or pcap_next_ex() following a pcap_open_live(), + the SMP will pass down the monitor start command and various parameters the IOP should use. +
    IOP -> SMP + The IOP now sends a stream of captured data. +
    SMP + The SMP continuously reads the next packet from the reverse channel of the connection + between the SMP and the IOP that provides the captured data (via 'p->read_op' + which is 'pcap_read_linux()' until 'cnt' packets have been received. + The specified callback function will be invoked for each packet received. +
    IOP + The IOP continues to listen for additional commands as well as capturing and forwarding data to the SMP. +
    pcap_next() + It reads the next packet (by calling pcap_dispatch() with a count of 1) + and returns a pointer to the data in that packet. +
    + + + + + + + + + + + + +
    SMP -> IOP + On the first invocation of pcap_dispatch(), pcap_loop(), or pcap_next(), or pcap_next_ex() following a pcap_open_live(), + the SMP will pass down the monitor start command and various parameters the IOP should use. +
    IOP -> SMP + The IOP now sends a stream of captured data. +
    SMP + The SMP reads only the next packet from the reverse channel of the connection + between the SMP and the IOP that provides the captured data (via calling pcap_dispatch() + with a count of 1) and returns a pointer to that data by invoking an internal callback. +
    IOP + The IOP continues to listen for additional commands as well as capturing and forwarding data to the SMP. +
    pcap_next_ex()Reads the next packet and returns a success/failure indication.
    + + + + + + + + + + + + +
    SMP -> IOP + On the first invocation of pcap_dispatch(), pcap_loop(), or pcap_next(), or pcap_next_ex() following a pcap_open_live(), + the SMP will pass down the monitor start command and various parameters the IOP should use. +
    IOP -> SMP + The IOP now sends a stream of captured data. +
    SMP + The SMP reads only the next packet from the reverse channel of the connection + between the SMP and the IOP that provides the captured data (via calling pcap_dispatch() + with a count of 1) and returns seperate pointers to both the + packet header and packet data by invoking an internal callback. +
    IOP + The IOP continues to listen for additional commands as well as capturing and forwarding data to the SMP. +
    pcap_setfilter()Used to specify a filter program.
    + + + + + + +
    SMP -> IOP + The SMP sends a 'set filter' command followed by the BPF commands. +
    IOP -> SMP + The IOP returns a null terminated error string if it failed to accept the filter. + If no error occured, then a NULL terminated empty string is returned instead. + Errors are: +
      +
    • "Invalid BPF." +
    • "Insufficient resources for BPF." +
    +
    pcap_stats()Fills in a pcap_stat struct with packet statistics.
    + + + + + + + + + +
    SMP -> IOP + The SMP sends a message to the IOP requesting its statistics. +
    IOP -> SMP + The IOP returns the statistics. +
    SMP + The SMP fills in the structure provided with the information retrieved from the IOP. +
    pcap_close()Closes the file and deallocates resources.
    + + + + + + +
    SMP -> IOP + The SMP closes the file descriptor, and if the descriptor is that of + the comminucation session with an IOP, it too is terminated. +
    IOP + If the IOP detects that its communication session with an SMP + has closed, it will terminate any monitoring in progress, + release any resources and close its end of the session. + It will not maintain persistance of any information or prior mode of operation. +
    +

+ +

+

SMP/IOP Inter-Process Communication Protocol

+ +
    +

  • Communications between an SMP and an IOP consists of a TCP session + between an ephemeral port on the SMP and the well known port of 49152 + (which is the first available port in the 'dynamic and/or private port' + range) on an IOP. +

  • Following a TCP open operation the IOP receives a null terminated + 'interface ID' string to determine the type of operation that follows: +

  • Every command received by an IOP implies a 'stop trace/stop forwarding' operation must + occur before executing the received command. +

  • A session is closed when the SMP closes the TCP session with the IOP. + Obviously monitoring and forwarding is also stopped at that time. + + Note: All multi-octet entities are sent in network neutral order. +

    + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    pcap_findalldevs()SMP -> IOPOpen socket (to each IOP), and sends: +

    + + + + + + + + + + + +
    Name/
    Purpose    		Size
    (in bytes)    		Description
    Interface ID1A NULL to indicate an an empty 'interface ID'.
    +

    IOP -> SMPSend its (possibly empty) NULL terminated error response string.
    SMP -> IOPSends the 'interface query request': +

    + + + + + + + + + + + +
    Name/
    Purpose    		Size
    (in bytes)    		Description
    Interface ID1A 'Q' (indicating 'interface query request').
    +

    IOP -> SMPThe IOP returns a list of sequences of information as + defined by the return parameter of this function call (as shown in the following table). + Elements are specified by providing an unsigned byte preceeding the actual data that contains length information. +

    + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    Notes:Name/
    Purpose    		Size
    (in bytes)    		Description
     length1The number of octets in the name field that follows.
    Name1-255The name of the interface. The format of the name is an alphabetic string (indicating + the type of interface) followed by an optional numeric string (indicating the interface's + sequence number). + Sequence numbers (if needed) will begin at zero and progress monotonically upwards. + (i.e. 'eth0', 'lo', 'wan0', etc.) +

    + For an IOP, the alphabetic string will be one of: 'eth', 'wan', and 'lo' + for Ethernet, WAN ports and the IP loopback device respectively. + An IOP currently supports: 'eth0', 'eth1', 'lo', 'wan0' ... 'wan7'. +

    + Note: IOPs and ACNs will not currently support the concept of 'any' interface.

    length1The number of octets in the interface description field that follows.
    Interface Description0-255A description of the interface or it may be an empty string. (i.e. 'ALC')
    Interface Type4The type of interface as defined in the description for pcap_datalink() (in network neutral order).
    Loopback Flag11 = if the interface is a loopback interface, zero = otherwise.
    count1# of address entries that follow. + Each entry is a series of bytes in network neutral order. + See the parameter definition above for more details.
    Repeated 'count' number of times.length1The number of octets in the address field that follows.
    Address1-255The address of this interface (in network neutral order).
    length1The number of octets in the netmask field that follows.
    Network Mask0-255The network mask used on this interface (if applicable) (in network neutral order).
    length1The number of octets in the broadcast address field that follows.
    Broadcast Address0-255The broadcast address of this interface (if applicable) (in network neutral order).
    length1The number of octets in the destination address field that follows.
    Destination Address0-255The destination address of this interface (if applicable) (in network neutral order).
    +

    SMP -> IOPClose the socket.
    IOP -> SMPClose the socket.
    pcap_open_live()SMP -> IOPOpen socket, and sends: +

    + + + + + + + + + + + +
    Name/
    Purpose    		Size
    (in bytes)    		Description
    Interface ID'n''n' octets containing a NULL terminated interface name string.
    +

    IOP -> SMPSend its NULL terminated error response string.
    pcap_dispatch()
    pcap_loop()
    pcap_next()
    pcap_next_ex()    		SMP -> IOPOn the first invocation following a pcap_open_live() or pcap_breakloop() additional information is sent: +

    + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    Name/
    Purpose    		Size
    (in bytes)    		Description
    command1'M' (indicating 'monitor start')
    snaplen4snaplen
    timeout1timeout value (in milliseconds)
    promiscuous1A flag indicating that the interface being monitored show operate + in promiscuous mode. [off(0) / on(NZ)]
    direction1A flag indicating the direction of traffic that should be captuted [both(0) / in(1) / out(2)]
    +

    IOP -> SMPSends captured packets.
    pcap_setfilter()SMP -> IOPAt any time, the SMP can issue a set filter command which contains + an indicator, a count of the number of statements in the filter, + followed by the sequence of filter commands represented as a sequence + of C-style structures. +

    + + + + + + + + + + + + + + + + + + + + + +
    Name/
    Purpose    		Size
    (in bytes)    		Description
    command1'F' (indicating 'filter')
    count4The number of command in the Berkeley Packet Filter that follow.
    BPF program'n'8 bytes of each command (repeated 'n' times).
    + Each command consists of that C-style structure which contains: +

    + + + + + + + + + + + + + + + + + + + + + + + + + + +
    Name/
    Purpose    		Size
    (in bytes)    		Description
    opcode2The command's opcode.
    'jt'1The 'jump if true' program counter offset.
    'jf'1The 'jump if false' program counter offset.
    'k'4The 'other' data field.
    +

    + Refer to the bpf(4) man page for more details. +

    +

    IOP -> SMPIn return the IOP will send its (possibly empty) NULL terminated error response string.
    pcap_stats()SMP -> IOPAt any time, the SMP can issue a 'retrieve statistics' command which contains:
    +

    + + + + + + + + + + + +
    Name/
    Purpose    		Size
    (in bytes)    		Description
    command1'S' (indicating 'request statistics')
    +

    IOP -> SMPIn return the IOP will send: +

    + + + + + + + + + + + + + + + + + + + + + +
    Name/
    Purpose    		Size
    (in bytes)    		Description
    ps_recv4The number of packets that passed the filter.
    ps_drop4The number of packets that were dropped because the input queue was full, + regardless of whether they passed the filter.
    ps_ifdrop4The number of packets dropped by the network inteface + (regardless of whether they would have passed the input filter).
    +

    pcap_close()SMP -> IOPAt any time, the SMP can close the TCP session with the IOP.
    +

+ +

Interface ID Naming Convention

+
    + Each interface within an IOP will be referred to uniquely. Since an currently contains + 8 monitorable WAN ports and a monitorable Ethernet port, the naming convention is: +

    +

    + + + + + + + + + + + + +
    Interface # Type Name
    1 WAN wan0
    2 WAN wan1
    3 WAN wan2
    4 WAN wan3
    5 WAN wan4
    6 WAN wan5
    7 WAN wan6
    8 WAN wan7
    9 Ethernet eth0
    10 Ethernet eth1
    +
    +
+ +

Packet Trace Data Format

+
    + The format of the trace data that is sent to the SMP follows a portion of the libpcap file format + and is summarized here. This format specifies the generic requirements needed to + be able to decode packets, but does not cover ACN specifics such as custom MAC addressing + and WAN protocol support. +

    + + Although a libpcap file begins with a global header followed by zero or + more records for each captured packet, trace data sent to the SMP does NOT begin with a global header. + A trace sequence looks like this: +

    + + + + + + + + + + +
     [Packet Header]  [Packet Data]  [Packet Header]  [Packet Data]  [Packet Header]  [Packet Data] ...
    + +

    Packet Header

    +
      + Each captured packet starts with a header that contains the following values + (in network neutral order): + + + 
      + uint32 tv_sec;  /* timestamp seconds */
+ uint32 tv_usec; /* timestamp microseconds */
+ uint32 caplen;  /* number of octets in the following packet */
+ uint32 len;     /* original length of packet on the wire */
+
      +       + + + + + + + + + + + + + + + + + + +
      tv_secThe date and time when this packet was captured. + This value is in seconds since January 1, 1970 00:00:00 GMT; + this is also known as a UN*X time_t. You can use the ANSI C + time() function from time.h to get this value, + but you might use a more optimized way to get this timestamp value. + If this timestamp isn't based on GMT (UTC), use thiszone + from the global header for adjustments.
      tv_usecThe microseconds when this packet was captured, as an offset to ts_sec. + Beware: this value must never reach 1 second (1,000,000), + in this case ts_sec must be increased instead!
      caplenThe number of bytes actually provided in the capture record. + This value should never become larger than len or the + snaplen value specified during the capture.
      lenThe length of the packet "on the wire" when it was captured. + If caplen and len differ, the actually + saved packet size was limited by the value of snaplen specified + during one of the capture directives such as pcap_dispatch().
      +
    + +

    Packet Data

    +
      + The actual packet data will immediately follow the packet header as a sequence of caplen octets. + Depending on the DLT encoding number assigned to the interface, the packet data will contain an additional + custom header used to convey WAN port related information. +
    + +

    ACN Custom Packet Header

    +
      + PCAP, Wireshark and Tcpdump enhancements have been added to the ACN to support + monitoring of its ports, however each of these facilities were focused on capturing + and displaying traffic from LAN interfaces. The SITA extentions to these facilities + are used to also provide the ability to capture, filter, and display information from + an ACN's WAN ports. +

      + Although each packet follows the standard libpcap format, since there are + two types of interfaces that can be monitored, the format of the data + packet varies slightly. +

      +

        +
      • For Ethernet (like) devices, the packet format is unchanged from the standard Pcap format. +
      • For WAN devices, the packet contains a 5 byte header that preceeds the actual captured data + described by the following table: +
      +

      +

      + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
      OctetNameMask/ValueDefinition
      0Control / Statusxxxxxxx0Transmitted by capture device(see 'Errors' octets)
      xxxxxxx1Received by capture device
      1xxxxxxxNo buffer was available during capture of previous packet.
      1Signalsxxxxxxx1 DSR asserted
      xxxxxx1x DTR asserted
      xxxxx1xx CTS asserted
      xxxx1xxx RTS asserted
      xxx1xxxx DCD asserted
      xx1xxxxx Undefined
      x1xxxxxx Undefined
      1xxxxxxx Undefined
      2Errors
      (octet 1)      		  Tx Rx
      xxxxxxx1 Underrun Framing
      xxxxxx1x CTS Lost Parity
      xxxxx1xx UART Error Collision
      xxxx1xxx Re-Tx Limit Reached Long Frame
      xxx1xxxx Undefined Short Frame
      xx1xxxxx Undefined Undefined
      x1xxxxxx Undefined Undefined
      1xxxxxxx Undefined Undefined
      3Errors
      (octet 2)      		  Tx Rx
      xxxxxxx1 Undefined Non-Octet Aligned
      xxxxxx1x Undefined Abort Received
      xxxxx1xx Undefined CD Lost
      xxxx1xxx Undefined Digital PLL Error
      xxx1xxxx Undefined Overrun
      xx1xxxxx Undefined Frame Length Violation
      x1xxxxxx Undefined CRC Error
      1xxxxxxx Undefined Break Received
      4Protocol +
      + + + + + + + + + + + + + +
      0x01 - LAPB (BOP)  
      0x02 - Ethernet 1
      0x03 - Async (Interrupt IO)  
      0x04 - Async (Block IO)  
      0x05 - IPARS  
      0x06 - UTS  
      0x07 - PPP (HDLC)  
      0x08 - SDLC  
      0x09 - Token Ring 1
      0x10 - I2C  
      0x11 - DPM Link  
      0x12 - Frame Relay (BOP)  
      +
      +

      + Note 1: + Ethernet and Token Ring frames will never be sent as DLT_SITA (with the 5 octet header), + but will be sent as their corresponding DLT types instead. +

      +
      +
    +

    +

+ diff --git a/pcap-snf.c b/pcap-snf.c new file mode 100644 index 0000000..96781bd --- /dev/null +++ b/pcap-snf.c @@ -0,0 +1,306 @@ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include + +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#include "snf.h" +#include "pcap-int.h" + +#ifdef SNF_ONLY +#define snf_create pcap_create +#define snf_platform_finddevs pcap_platform_finddevs +#endif + +static int +snf_set_datalink(pcap_t *p, int dlt) +{ + p->linktype = dlt; + return (0); +} + +static int +snf_pcap_stats(pcap_t *p, struct pcap_stat *ps) +{ + struct snf_ring_stats stats; + int rc; + + if ((rc = snf_ring_getstats(p->md.snf_ring, &stats))) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "snf_get_stats: %s", + pcap_strerror(rc)); + return -1; + } + ps->ps_recv = stats.ring_pkt_recv + stats.ring_pkt_overflow; + ps->ps_drop = stats.ring_pkt_overflow; + ps->ps_ifdrop = stats.nic_pkt_overflow + stats.nic_pkt_bad; + return 0; +} + +static void +snf_platform_cleanup(pcap_t *p) +{ + if (p == NULL) + return; + + snf_ring_close(p->md.snf_ring); + snf_close(p->md.snf_handle); + pcap_cleanup_live_common(p); +} + +static int +snf_getnonblock(pcap_t *p, char *errbuf) +{ + return (p->md.snf_timeout == 0); +} + +static int +snf_setnonblock(pcap_t *p, int nonblock, char *errbuf) +{ + if (nonblock) + p->md.snf_timeout = 0; + else { + if (p->md.timeout <= 0) + p->md.snf_timeout = -1; /* forever */ + else + p->md.snf_timeout = p->md.timeout; + } + return (0); +} + +#define _NSEC_PER_SEC 1000000000 + +static inline +struct timeval +snf_timestamp_to_timeval(const int64_t ts_nanosec) +{ + struct timeval tv; + int32_t rem; + if (ts_nanosec == 0) + return (struct timeval) { 0, 0 }; + tv.tv_sec = ts_nanosec / _NSEC_PER_SEC; + tv.tv_usec = (ts_nanosec % _NSEC_PER_SEC) / 1000; + return tv; +} + +static int +snf_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user) +{ + struct pcap_pkthdr hdr; + int i, flags, err, caplen, n; + struct snf_recv_req req; + + if (!p || cnt == 0) + return -1; + + n = 0; + while (n < cnt || cnt < 0) { + /* + * Has "pcap_breakloop()" been called? + */ + if (p->break_loop) { + if (n == 0) { + p->break_loop = 0; + return (-2); + } else { + return (n); + } + } + + err = snf_ring_recv(p->md.snf_ring, p->md.snf_timeout, &req); + + if (err) { + if (err == EBUSY || err == EAGAIN) + return (0); + if (err == EINTR) + continue; + if (err != 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "snf_read: %s", + pcap_strerror(err)); + return -1; + } + } + + caplen = req.length; + if (caplen > p->snapshot) + caplen = p->snapshot; + + if ((p->fcode.bf_insns == NULL) || + bpf_filter(p->fcode.bf_insns, req.pkt_addr, req.length, caplen)) { + hdr.ts = snf_timestamp_to_timeval(req.timestamp); + hdr.caplen = caplen; + hdr.len = req.length; + callback(user, &hdr, req.pkt_addr); + } + n++; + } + return (n); +} + +static int +snf_setfilter(pcap_t *p, struct bpf_program *fp) +{ + if (!p) + return -1; + if (!fp) { + strncpy(p->errbuf, "setfilter: No filter specified", + sizeof(p->errbuf)); + return -1; + } + + /* Make our private copy of the filter */ + + if (install_bpf_program(p, fp) < 0) + return -1; + + p->md.use_bpf = 0; + + return (0); +} + +static int +snf_inject(pcap_t *p, const void *buf _U_, size_t size _U_) +{ + strlcpy(p->errbuf, "Sending packets isn't supported with snf", + PCAP_ERRBUF_SIZE); + return (-1); +} + +static int +snf_activate(pcap_t* p) +{ + char *device = p->opt.source; + const char *nr = NULL; + int err; + int flags = 0; + + if (device == NULL) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "device is NULL: %s", pcap_strerror(errno)); + return -1; + } + + /* In Libpcap, we set pshared by default if NUM_RINGS is set to > 1. + * Since libpcap isn't thread-safe */ + if ((nr = getenv("SNF_NUM_RINGS")) && *nr && atoi(nr) > 1) + flags |= SNF_F_PSHARED; + else + nr = NULL; + + err = snf_open(p->md.snf_boardnum, + 0, /* let SNF API parse SNF_NUM_RINGS, if set */ + NULL, /* default RSS, or use SNF_RSS_FLAGS env */ + 0, /* default to SNF_DATARING_SIZE from env */ + flags, /* may want pshared */ + &p->md.snf_handle); + if (err != 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "snf_open failed: %s", pcap_strerror(err)); + return -1; + } + + err = snf_ring_open(p->md.snf_handle, &p->md.snf_ring); + if (err != 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "snf_ring_open failed: %s", pcap_strerror(err)); + return -1; + } + + if (p->md.timeout <= 0) + p->md.snf_timeout = -1; + else + p->md.snf_timeout = p->md.timeout; + + err = snf_start(p->md.snf_handle); + if (err != 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "snf_start failed: %s", pcap_strerror(err)); + return -1; + } + + /* + * "select()" and "poll()" don't work on snf descriptors. + */ + p->selectable_fd = -1; + p->linktype = DLT_EN10MB; + p->read_op = snf_read; + p->inject_op = snf_inject; + p->setfilter_op = snf_setfilter; + p->setdirection_op = NULL; /* Not implemented.*/ + p->set_datalink_op = snf_set_datalink; + p->getnonblock_op = snf_getnonblock; + p->setnonblock_op = snf_setnonblock; + p->stats_op = snf_pcap_stats; + p->cleanup_op = snf_platform_cleanup; + p->md.stat.ps_recv = 0; + p->md.stat.ps_drop = 0; + p->md.stat.ps_ifdrop = 0; + return 0; +} + +int +snf_platform_finddevs(pcap_if_t **devlistp, char *errbuf) +{ + /* + * There are no platform-specific devices since each device + * exists as a regular Ethernet device. + */ + return 0; +} + +pcap_t * +snf_create(const char *device, char *ebuf) +{ + pcap_t *p; + int boardnum = -1; + struct snf_ifaddrs *ifaddrs, *ifa; + size_t devlen; + + if (snf_init(SNF_VERSION_API)) + return NULL; + + /* + * Match a given interface name to our list of interface names, from + * which we can obtain the intended board number + */ + if (snf_getifaddrs(&ifaddrs) || ifaddrs == NULL) + return NULL; + devlen = strlen(device) + 1; + ifa = ifaddrs; + while (ifa) { + if (!strncmp(device, ifa->snf_ifa_name, devlen)) { + boardnum = ifa->snf_ifa_boardnum; + break; + } + ifa = ifa->snf_ifa_next; + } + snf_freeifaddrs(ifaddrs); + + if (ifa == NULL) { + /* + * If we can't find the device by name, support the name "snfX" + * and "snf10gX" where X is the board number. + */ + if (sscanf(device, "snf10g%d", &boardnum) != 1 && + sscanf(device, "snf%d", &boardnum) != 1) + return NULL; + } + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return NULL; + + p->activate_op = snf_activate; + p->md.snf_boardnum = boardnum; + return p; +} diff --git a/pcap-snf.h b/pcap-snf.h new file mode 100644 index 0000000..8c19755 --- /dev/null +++ b/pcap-snf.h @@ -0,0 +1,2 @@ +pcap_t *snf_create(const char *, char *); +int snf_platform_finddevs(pcap_if_t **devlistp, char *errbuf); diff --git a/pcap-snit.c b/pcap-snit.c new file mode 100644 index 0000000..fa0c4ef --- /dev/null +++ b/pcap-snit.c @@ -0,0 +1,426 @@ +/* + * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * Modifications made to accommodate the new SunOS4.0 NIT facility by + * Micky Liu, micky@cunixc.cc.columbia.edu, Columbia University in May, 1989. + * This module now handles the STREAMS based NIT. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-snit.c,v 1.77 2008-04-14 20:40:58 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include "pcap-int.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +/* + * The chunk size for NIT. This is the amount of buffering + * done for read calls. + */ +#define CHUNKSIZE (2*1024) + +/* + * The total buffer space used by NIT. + */ +#define BUFSPACE (4*CHUNKSIZE) + +/* Forwards */ +static int nit_setflags(int, int, int, char *); + +static int +pcap_stats_snit(pcap_t *p, struct pcap_stat *ps) +{ + + /* + * "ps_recv" counts packets handed to the filter, not packets + * that passed the filter. As filtering is done in userland, + * this does not include packets dropped because we ran out + * of buffer space. + * + * "ps_drop" counts packets dropped inside the "/dev/nit" + * device because of flow control requirements or resource + * exhaustion; it doesn't count packets dropped by the + * interface driver, or packets dropped upstream. As filtering + * is done in userland, it counts packets regardless of whether + * they would've passed the filter. + * + * These statistics don't include packets not yet read from the + * kernel by libpcap or packets not yet read from libpcap by the + * application. + */ + *ps = p->md.stat; + return (0); +} + +static int +pcap_read_snit(pcap_t *p, int cnt, pcap_handler callback, u_char *user) +{ + register int cc, n; + register u_char *bp, *cp, *ep; + register struct nit_bufhdr *hdrp; + register struct nit_iftime *ntp; + register struct nit_iflen *nlp; + register struct nit_ifdrops *ndp; + register int caplen; + + cc = p->cc; + if (cc == 0) { + cc = read(p->fd, (char *)p->buffer, p->bufsize); + if (cc < 0) { + if (errno == EWOULDBLOCK) + return (0); + snprintf(p->errbuf, sizeof(p->errbuf), "pcap_read: %s", + pcap_strerror(errno)); + return (-1); + } + bp = p->buffer; + } else + bp = p->bp; + + /* + * loop through each snapshot in the chunk + */ + n = 0; + ep = bp + cc; + while (bp < ep) { + /* + * Has "pcap_breakloop()" been called? + * If so, return immediately - if we haven't read any + * packets, clear the flag and return -2 to indicate + * that we were told to break out of the loop, otherwise + * leave the flag set, so that the *next* call will break + * out of the loop without having read any packets, and + * return the number of packets we've processed so far. + */ + if (p->break_loop) { + if (n == 0) { + p->break_loop = 0; + return (-2); + } else { + p->bp = bp; + p->cc = ep - bp; + return (n); + } + } + + ++p->md.stat.ps_recv; + cp = bp; + + /* get past NIT buffer */ + hdrp = (struct nit_bufhdr *)cp; + cp += sizeof(*hdrp); + + /* get past NIT timer */ + ntp = (struct nit_iftime *)cp; + cp += sizeof(*ntp); + + ndp = (struct nit_ifdrops *)cp; + p->md.stat.ps_drop = ndp->nh_drops; + cp += sizeof *ndp; + + /* get past packet len */ + nlp = (struct nit_iflen *)cp; + cp += sizeof(*nlp); + + /* next snapshot */ + bp += hdrp->nhb_totlen; + + caplen = nlp->nh_pktlen; + if (caplen > p->snapshot) + caplen = p->snapshot; + + if (bpf_filter(p->fcode.bf_insns, cp, nlp->nh_pktlen, caplen)) { + struct pcap_pkthdr h; + h.ts = ntp->nh_timestamp; + h.len = nlp->nh_pktlen; + h.caplen = caplen; + (*callback)(user, &h, cp); + if (++n >= cnt && cnt > 0) { + p->cc = ep - bp; + p->bp = bp; + return (n); + } + } + } + p->cc = 0; + return (n); +} + +static int +pcap_inject_snit(pcap_t *p, const void *buf, size_t size) +{ + struct strbuf ctl, data; + + /* + * XXX - can we just do + * + ret = write(pd->f, buf, size); + */ + ctl.len = sizeof(*sa); /* XXX - what was this? */ + ctl.buf = (char *)sa; + data.buf = buf; + data.len = size; + ret = putmsg(p->fd, &ctl, &data); + if (ret == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send: %s", + pcap_strerror(errno)); + return (-1); + } + return (ret); +} + +static int +nit_setflags(int fd, int promisc, int to_ms, char *ebuf) +{ + bpf_u_int32 flags; + struct strioctl si; + struct timeval timeout; + + si.ic_timout = INFTIM; + if (to_ms != 0) { + timeout.tv_sec = to_ms / 1000; + timeout.tv_usec = (to_ms * 1000) % 1000000; + si.ic_cmd = NIOCSTIME; + si.ic_len = sizeof(timeout); + si.ic_dp = (char *)&timeout; + if (ioctl(fd, I_STR, (char *)&si) < 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "NIOCSTIME: %s", + pcap_strerror(errno)); + return (-1); + } + } + flags = NI_TIMESTAMP | NI_LEN | NI_DROPS; + if (promisc) + flags |= NI_PROMISC; + si.ic_cmd = NIOCSFLAGS; + si.ic_len = sizeof(flags); + si.ic_dp = (char *)&flags; + if (ioctl(fd, I_STR, (char *)&si) < 0) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "NIOCSFLAGS: %s", + pcap_strerror(errno)); + return (-1); + } + return (0); +} + +static int +pcap_activate_snit(pcap_t *p) +{ + struct strioctl si; /* struct for ioctl() */ + struct ifreq ifr; /* interface request struct */ + int chunksize = CHUNKSIZE; + int fd; + static char dev[] = "/dev/nit"; + + if (p->opt.rfmon) { + /* + * No monitor mode on SunOS 4.x (no Wi-Fi devices on + * hardware supported by SunOS 4.x). + */ + return (PCAP_ERROR_RFMON_NOTSUP); + } + + if (p->snapshot < 96) + /* + * NIT requires a snapshot length of at least 96. + */ + p->snapshot = 96; + + /* + * Initially try a read/write open (to allow the inject + * method to work). If that fails due to permission + * issues, fall back to read-only. This allows a + * non-root user to be granted specific access to pcap + * capabilities via file permissions. + * + * XXX - we should have an API that has a flag that + * controls whether to open read-only or read-write, + * so that denial of permission to send (or inability + * to send, if sending packets isn't supported on + * the device in question) can be indicated at open + * time. + */ + p->fd = fd = open(dev, O_RDWR); + if (fd < 0 && errno == EACCES) + p->fd = fd = open(dev, O_RDONLY); + if (fd < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "%s: %s", dev, + pcap_strerror(errno)); + goto bad; + } + + /* arrange to get discrete messages from the STREAM and use NIT_BUF */ + if (ioctl(fd, I_SRDOPT, (char *)RMSGD) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "I_SRDOPT: %s", + pcap_strerror(errno)); + goto bad; + } + if (ioctl(fd, I_PUSH, "nbuf") < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "push nbuf: %s", + pcap_strerror(errno)); + goto bad; + } + /* set the chunksize */ + si.ic_cmd = NIOCSCHUNK; + si.ic_timout = INFTIM; + si.ic_len = sizeof(chunksize); + si.ic_dp = (char *)&chunksize; + if (ioctl(fd, I_STR, (char *)&si) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "NIOCSCHUNK: %s", + pcap_strerror(errno)); + goto bad; + } + + /* request the interface */ + strncpy(ifr.ifr_name, p->opt.source, sizeof(ifr.ifr_name)); + ifr.ifr_name[sizeof(ifr.ifr_name) - 1] = '\0'; + si.ic_cmd = NIOCBIND; + si.ic_len = sizeof(ifr); + si.ic_dp = (char *)𝔦 + if (ioctl(fd, I_STR, (char *)&si) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "NIOCBIND: %s: %s", + ifr.ifr_name, pcap_strerror(errno)); + goto bad; + } + + /* set the snapshot length */ + si.ic_cmd = NIOCSSNAP; + si.ic_len = sizeof(p->snapshot); + si.ic_dp = (char *)&p->snapshot; + if (ioctl(fd, I_STR, (char *)&si) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "NIOCSSNAP: %s", + pcap_strerror(errno)); + goto bad; + } + if (nit_setflags(p->fd, p->opt.promisc, p->md.timeout, p->errbuf) < 0) + goto bad; + + (void)ioctl(fd, I_FLUSH, (char *)FLUSHR); + /* + * NIT supports only ethernets. + */ + p->linktype = DLT_EN10MB; + + p->bufsize = BUFSPACE; + p->buffer = (u_char *)malloc(p->bufsize); + if (p->buffer == NULL) { + strlcpy(p->errbuf, pcap_strerror(errno), PCAP_ERRBUF_SIZE); + goto bad; + } + + /* + * "p->fd" is an FD for a STREAMS device, so "select()" and + * "poll()" should work on it. + */ + p->selectable_fd = p->fd; + + /* + * This is (presumably) a real Ethernet capture; give it a + * link-layer-type list with DLT_EN10MB and DLT_DOCSIS, so + * that an application can let you choose it, in case you're + * capturing DOCSIS traffic that a Cisco Cable Modem + * Termination System is putting out onto an Ethernet (it + * doesn't put an Ethernet header onto the wire, it puts raw + * DOCSIS frames out on the wire inside the low-level + * Ethernet framing). + */ + p->dlt_list = (u_int *) malloc(sizeof(u_int) * 2); + /* + * If that fails, just leave the list empty. + */ + if (p->dlt_list != NULL) { + p->dlt_list[0] = DLT_EN10MB; + p->dlt_list[1] = DLT_DOCSIS; + p->dlt_count = 2; + } + + p->read_op = pcap_read_snit; + p->inject_op = pcap_inject_snit; + p->setfilter_op = install_bpf_program; /* no kernel filtering */ + p->setdirection_op = NULL; /* Not implemented. */ + p->set_datalink_op = NULL; /* can't change data link type */ + p->getnonblock_op = pcap_getnonblock_fd; + p->setnonblock_op = pcap_setnonblock_fd; + p->stats_op = pcap_stats_snit; + + return (0); + bad: + pcap_cleanup_live_common(p); + return (PCAP_ERROR); +} + +pcap_t * +pcap_create(const char *device, char *ebuf) +{ + pcap_t *p; + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return (NULL); + + p->activate_op = pcap_activate_snit; + return (p); +} + +int +pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf) +{ + return (0); +} diff --git a/pcap-snoop.c b/pcap-snoop.c new file mode 100644 index 0000000..330e01d --- /dev/null +++ b/pcap-snoop.c @@ -0,0 +1,413 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-snoop.c,v 1.59 2008-12-02 16:25:14 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include +#include +#include + +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include "pcap-int.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +static int +pcap_read_snoop(pcap_t *p, int cnt, pcap_handler callback, u_char *user) +{ + int cc; + register struct snoopheader *sh; + register u_int datalen; + register u_int caplen; + register u_char *cp; + +again: + /* + * Has "pcap_breakloop()" been called? + */ + if (p->break_loop) { + /* + * Yes - clear the flag that indicates that it + * has, and return -2 to indicate that we were + * told to break out of the loop. + */ + p->break_loop = 0; + return (-2); + } + cc = read(p->fd, (char *)p->buffer, p->bufsize); + if (cc < 0) { + /* Don't choke when we get ptraced */ + switch (errno) { + + case EINTR: + goto again; + + case EWOULDBLOCK: + return (0); /* XXX */ + } + snprintf(p->errbuf, sizeof(p->errbuf), + "read: %s", pcap_strerror(errno)); + return (-1); + } + sh = (struct snoopheader *)p->buffer; + datalen = sh->snoop_packetlen; + + /* + * XXX - Sigh, snoop_packetlen is a 16 bit quantity. If we + * got a short length, but read a full sized snoop pakcet, + * assume we overflowed and add back the 64K... + */ + if (cc == (p->snapshot + sizeof(struct snoopheader)) && + (datalen < p->snapshot)) + datalen += (64 * 1024); + + caplen = (datalen < p->snapshot) ? datalen : p->snapshot; + cp = (u_char *)(sh + 1) + p->offset; /* XXX */ + + /* + * XXX unfortunately snoop loopback isn't exactly like + * BSD's. The address family is encoded in the first 2 + * bytes rather than the first 4 bytes! Luckily the last + * two snoop loopback bytes are zeroed. + */ + if (p->linktype == DLT_NULL && *((short *)(cp + 2)) == 0) { + u_int *uip = (u_int *)cp; + *uip >>= 16; + } + + if (p->fcode.bf_insns == NULL || + bpf_filter(p->fcode.bf_insns, cp, datalen, caplen)) { + struct pcap_pkthdr h; + ++p->md.stat.ps_recv; + h.ts.tv_sec = sh->snoop_timestamp.tv_sec; + h.ts.tv_usec = sh->snoop_timestamp.tv_usec; + h.len = datalen; + h.caplen = caplen; + (*callback)(user, &h, cp); + return (1); + } + return (0); +} + +static int +pcap_inject_snoop(pcap_t *p, const void *buf, size_t size) +{ + int ret; + + /* + * XXX - libnet overwrites the source address with what I + * presume is the interface's address; is that required? + */ + ret = write(p->fd, buf, size); + if (ret == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send: %s", + pcap_strerror(errno)); + return (-1); + } + return (ret); +} + +static int +pcap_stats_snoop(pcap_t *p, struct pcap_stat *ps) +{ + register struct rawstats *rs; + struct rawstats rawstats; + + rs = &rawstats; + memset(rs, 0, sizeof(*rs)); + if (ioctl(p->fd, SIOCRAWSTATS, (char *)rs) < 0) { + snprintf(p->errbuf, sizeof(p->errbuf), + "SIOCRAWSTATS: %s", pcap_strerror(errno)); + return (-1); + } + + /* + * "ifdrops" are those dropped by the network interface + * due to resource shortages or hardware errors. + * + * "sbdrops" are those dropped due to socket buffer limits. + * + * As filter is done in userland, "sbdrops" counts packets + * regardless of whether they would've passed the filter. + * + * XXX - does this count *all* Snoop or Drain sockets, + * rather than just this socket? If not, why does it have + * both Snoop and Drain statistics? + */ + p->md.stat.ps_drop = + rs->rs_snoop.ss_ifdrops + rs->rs_snoop.ss_sbdrops + + rs->rs_drain.ds_ifdrops + rs->rs_drain.ds_sbdrops; + + /* + * "ps_recv" counts only packets that passed the filter. + * As filtering is done in userland, this does not include + * packets dropped because we ran out of buffer space. + */ + *ps = p->md.stat; + return (0); +} + +/* XXX can't disable promiscuous */ +static int +pcap_activate_snoop(pcap_t *p) +{ + int fd; + struct sockaddr_raw sr; + struct snoopfilter sf; + u_int v; + int ll_hdrlen; + int snooplen; + struct ifreq ifr; + + fd = socket(PF_RAW, SOCK_RAW, RAWPROTO_SNOOP); + if (fd < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "snoop socket: %s", + pcap_strerror(errno)); + goto bad; + } + p->fd = fd; + memset(&sr, 0, sizeof(sr)); + sr.sr_family = AF_RAW; + (void)strncpy(sr.sr_ifname, p->opt.source, sizeof(sr.sr_ifname)); + if (bind(fd, (struct sockaddr *)&sr, sizeof(sr))) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "snoop bind: %s", + pcap_strerror(errno)); + goto bad; + } + memset(&sf, 0, sizeof(sf)); + if (ioctl(fd, SIOCADDSNOOP, &sf) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "SIOCADDSNOOP: %s", + pcap_strerror(errno)); + goto bad; + } + if (p->opt.buffer_size != 0) + v = p->opt.buffer_size; + else + v = 64 * 1024; /* default to 64K buffer size */ + (void)setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char *)&v, sizeof(v)); + /* + * XXX hack - map device name to link layer type + */ + if (strncmp("et", p->opt.source, 2) == 0 || /* Challenge 10 Mbit */ + strncmp("ec", p->opt.source, 2) == 0 || /* Indigo/Indy 10 Mbit, + O2 10/100 */ + strncmp("ef", p->opt.source, 2) == 0 || /* O200/2000 10/100 Mbit */ + strncmp("eg", p->opt.source, 2) == 0 || /* Octane/O2xxx/O3xxx Gigabit */ + strncmp("gfe", p->opt.source, 3) == 0 || /* GIO 100 Mbit */ + strncmp("fxp", p->opt.source, 3) == 0 || /* Challenge VME Enet */ + strncmp("ep", p->opt.source, 2) == 0 || /* Challenge 8x10 Mbit EPLEX */ + strncmp("vfe", p->opt.source, 3) == 0 || /* Challenge VME 100Mbit */ + strncmp("fa", p->opt.source, 2) == 0 || + strncmp("qaa", p->opt.source, 3) == 0 || + strncmp("cip", p->opt.source, 3) == 0 || + strncmp("el", p->opt.source, 2) == 0) { + p->linktype = DLT_EN10MB; + p->offset = RAW_HDRPAD(sizeof(struct ether_header)); + ll_hdrlen = sizeof(struct ether_header); + /* + * This is (presumably) a real Ethernet capture; give it a + * link-layer-type list with DLT_EN10MB and DLT_DOCSIS, so + * that an application can let you choose it, in case you're + * capturing DOCSIS traffic that a Cisco Cable Modem + * Termination System is putting out onto an Ethernet (it + * doesn't put an Ethernet header onto the wire, it puts raw + * DOCSIS frames out on the wire inside the low-level + * Ethernet framing). + * + * XXX - are there any sorts of "fake Ethernet" that have + * Ethernet link-layer headers but that *shouldn't offer + * DLT_DOCSIS as a Cisco CMTS won't put traffic onto it + * or get traffic bridged onto it? "el" is for ATM LANE + * Ethernet devices, so that might be the case for them; + * the same applies for "qaa" classical IP devices. If + * "fa" devices are for FORE SPANS, that'd apply to them + * as well; what are "cip" devices - some other ATM + * Classical IP devices? + */ + p->dlt_list = (u_int *) malloc(sizeof(u_int) * 2); + /* + * If that fails, just leave the list empty. + */ + if (p->dlt_list != NULL) { + p->dlt_list[0] = DLT_EN10MB; + p->dlt_list[1] = DLT_DOCSIS; + p->dlt_count = 2; + } + } else if (strncmp("ipg", p->opt.source, 3) == 0 || + strncmp("rns", p->opt.source, 3) == 0 || /* O2/200/2000 FDDI */ + strncmp("xpi", p->opt.source, 3) == 0) { + p->linktype = DLT_FDDI; + p->offset = 3; /* XXX yeah? */ + ll_hdrlen = 13; + } else if (strncmp("ppp", p->opt.source, 3) == 0) { + p->linktype = DLT_RAW; + ll_hdrlen = 0; /* DLT_RAW meaning "no PPP header, just the IP packet"? */ + } else if (strncmp("qfa", p->opt.source, 3) == 0) { + p->linktype = DLT_IP_OVER_FC; + ll_hdrlen = 24; + } else if (strncmp("pl", p->opt.source, 2) == 0) { + p->linktype = DLT_RAW; + ll_hdrlen = 0; /* Cray UNICOS/mp pseudo link */ + } else if (strncmp("lo", p->opt.source, 2) == 0) { + p->linktype = DLT_NULL; + ll_hdrlen = 4; + } else { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "snoop: unknown physical layer type"); + goto bad; + } + + if (p->opt.rfmon) { + /* + * No monitor mode on Irix (no Wi-Fi devices on + * hardware supported by Irix). + */ + return (PCAP_ERROR_RFMON_NOTSUP); + } + +#ifdef SIOCGIFMTU + /* + * XXX - IRIX appears to give you an error if you try to set the + * capture length to be greater than the MTU, so let's try to get + * the MTU first and, if that succeeds, trim the snap length + * to be no greater than the MTU. + */ + (void)strncpy(ifr.ifr_name, p->opt.source, sizeof(ifr.ifr_name)); + if (ioctl(fd, SIOCGIFMTU, (char *)&ifr) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "SIOCGIFMTU: %s", + pcap_strerror(errno)); + goto bad; + } + /* + * OK, we got it. + * + * XXX - some versions of IRIX 6.5 define "ifr_mtu" and have an + * "ifru_metric" member of the "ifr_ifru" union in an "ifreq" + * structure, others don't. + * + * I've no idea what's going on, so, if "ifr_mtu" isn't defined, + * we define it as "ifr_metric", as using that field appears to + * work on the versions that lack "ifr_mtu" (and, on those that + * don't lack it, "ifru_metric" and "ifru_mtu" are both "int" + * members of the "ifr_ifru" union, which suggests that they + * may be interchangeable in this case). + */ +#ifndef ifr_mtu +#define ifr_mtu ifr_metric +#endif + if (p->snapshot > ifr.ifr_mtu + ll_hdrlen) + p->snapshot = ifr.ifr_mtu + ll_hdrlen; +#endif + + /* + * The argument to SIOCSNOOPLEN is the number of link-layer + * payload bytes to capture - it doesn't count link-layer + * header bytes. + */ + snooplen = p->snapshot - ll_hdrlen; + if (snooplen < 0) + snooplen = 0; + if (ioctl(fd, SIOCSNOOPLEN, &snooplen) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "SIOCSNOOPLEN: %s", + pcap_strerror(errno)); + goto bad; + } + v = 1; + if (ioctl(fd, SIOCSNOOPING, &v) < 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "SIOCSNOOPING: %s", + pcap_strerror(errno)); + goto bad; + } + + p->bufsize = 4096; /* XXX */ + p->buffer = (u_char *)malloc(p->bufsize); + if (p->buffer == NULL) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", + pcap_strerror(errno)); + goto bad; + } + + /* + * "p->fd" is a socket, so "select()" should work on it. + */ + p->selectable_fd = p->fd; + + p->read_op = pcap_read_snoop; + p->inject_op = pcap_inject_snoop; + p->setfilter_op = install_bpf_program; /* no kernel filtering */ + p->setdirection_op = NULL; /* Not implemented. */ + p->set_datalink_op = NULL; /* can't change data link type */ + p->getnonblock_op = pcap_getnonblock_fd; + p->setnonblock_op = pcap_setnonblock_fd; + p->stats_op = pcap_stats_snoop; + + return (0); + bad: + pcap_cleanup_live_common(p); + return (PCAP_ERROR); +} + +pcap_t * +pcap_create(const char *device, char *ebuf) +{ + pcap_t *p; + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return (NULL); + + p->activate_op = pcap_activate_snoop; + return (p); +} + +int +pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf) +{ + return (0); +} diff --git a/pcap-stdinc.h b/pcap-stdinc.h new file mode 100644 index 0000000..f1c736e --- /dev/null +++ b/pcap-stdinc.h @@ -0,0 +1,89 @@ +/* + * Copyright (c) 2002 - 2005 NetGroup, Politecnico di Torino (Italy) + * Copyright (c) 2005 - 2009 CACE Technologies, Inc. Davis (California) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Politecnico di Torino nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * @(#) $Header: /tcpdump/master/libpcap/pcap-stdinc.h,v 1.10.2.1 2008-10-06 15:38:39 gianluca Exp $ (LBL) + */ +#ifndef pcap_stdinc_h +#define pcap_stdinc_h + +/* + * Avoids a compiler warning in case this was already defined + * (someone defined _WINSOCKAPI_ when including 'windows.h', in order + * to prevent it from including 'winsock.h') + */ +#ifdef _WINSOCKAPI_ +#undef _WINSOCKAPI_ +#endif +#include + +#include + +#include "bittypes.h" +#include +#include + +#ifndef __MINGW32__ +#include "IP6_misc.h" +#endif + +#define caddr_t char* + +#if _MSC_VER < 1500 +#define snprintf _snprintf +#define vsnprintf _vsnprintf +#define strdup _strdup +#endif + +#define inline __inline + +#ifdef __MINGW32__ +#include +#else /*__MINGW32__*/ +/* MSVC compiler */ +#ifndef _UINTPTR_T_DEFINED +#ifdef _WIN64 +typedef unsigned __int64 uintptr_t; +#else +typedef _W64 unsigned int uintptr_t; +#endif +#define _UINTPTR_T_DEFINED +#endif + +#ifndef _INTPTR_T_DEFINED +#ifdef _WIN64 +typedef __int64 intptr_t; +#else +typedef _W64 int intptr_t; +#endif +#define _INTPTR_T_DEFINED +#endif + +#endif /*__MINGW32__*/ +#endif /* pcap_stdinc_h */ diff --git a/pcap-tstamp.manmisc.in b/pcap-tstamp.manmisc.in new file mode 100644 index 0000000..2cd32c6 --- /dev/null +++ b/pcap-tstamp.manmisc.in @@ -0,0 +1,132 @@ +.\" +.\" Copyright (c) 1987, 1988, 1989, 1990, 1991, 1992, 1994, 1995, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP-TSTAMP @MAN_MISC_INFO@ "22 August 2010" +.SH NAME +pcap-tstamp \- packet time stamps in libpcap +.SH DESCRIPTION +When capturing traffic, each packet is given a time stamp representing, +for incoming packets, the arrival time of the packet and, for outgoing +packets, the transmission time of the packet. This time is an +approximation of the arrival or transmission time. If it is supplied by +the operating system running on the host on which the capture is being +done, there are several reasons why it might not precisely represent the +arrival or transmission time: +.IP +if the time stamp is applied to the packet when the networking stack +receives the packet, the networking stack might not see the packet until +an interrupt is delivered for the packet or a timer event causes the +networking device driver to poll for packets, and the time stamp might +not be applied until the packet has had some processing done by other +code in the networking stack, so there might be a significant delay +between the time when the last bit of the packet is received by the +capture device and when the networking stack time-stamps the packet; +.IP +the timer used to generate the time stamps might have low resolution, +for example, it might be a timer updated once per host operating system +timer tick, with the host operating system timer ticking once every few +milliseconds; +.IP +a high-resolution timer might use a counter that runs at a rate +dependent on the processor clock speed, and that clock speed might be +adjusted upwards or downwards over time and the timer might not be able +to compensate for all those adjustments; +.IP +the host operating system's clock might be adjusted over time to match a +time standard to which the host is being synchronized, which might be +done by temporarily slowing down or speeding up the clock or by making a +single adjustment; +.IP +different CPU cores on a multi-core or multi-processor system might be +running at different speeds, or might not have time counters all +synchronized, so packets time-stamped by different cores might not have +consistent time stamps. +.LP +In addition, packets time-stamped by different cores might be +time-stamped in one order and added to the queue of packets for libpcap +to read in another order, so time stamps might not be monotonically +increasing. +.LP +Some capture devices on some platforms can provide time stamps for +packets; those time stamps are usually high-resolution time stamps, and +are usually applied to the packet when the first or last bit of the +packet arrives, and are thus more accurate than time stamps provided by +the host operating system. Those time stamps might not, however, be +synchronized with the host operating system's clock, so that, for +example, the time stamp of a packet might not correspond to the time +stamp of an event on the host triggered by the arrival of that packet. +.LP +Depending on the capture device and the software on the host, libpcap +might allow different types of time stamp to be used. The +.BR pcap_list_tstamp_types (3PCAP) +routine provides, for a packet capture handle created by +.BR pcap_create (3PCAP) +but not yet activated by +.BR pcap_activate (3PCAP), +a list of time stamp types supported by the capture device for that +handle. +The list might be empty, in which case no choice of time stamp type is +offered for that capture device. If the list is not empty, the +.BR pcap_set_tstamp_type (3PCAP) +routine can be used after a +.B pcap_create() +call and before a +.B pcap_activate() +call to specify the type of time stamp to be used on the device. +The time stamp types are listed here; the first value is the #define to +use in code, the second value is the value returned by +.B pcap_tstamp_type_val_to_name() +and accepted by +.BR pcap_tstamp_name_to_val() . +.RS 5 +.TP 5 +.BR PCAP_TSTAMP_HOST " - " host +Time stamp provided by the host on which the capture is being done. The +precision of this time stamp is unspecified; it might or might not be +synchronized with the host operating system's clock. +.TP 5 +.BR PCAP_TSTAMP_HOST_LOWPREC " - " host_lowprec +Time stamp provided by the host on which the capture is being done. +This is a low-precision time stamp, synchronized with the host operating +system's clock. +.TP 5 +.BR PCAP_TSTAMP_HOST_HIPREC " - " host_hiprec +Time stamp provided by the host on which the capture is being done. +This is a high-precision time stamp; it might or might not be +synchronized with the host operating system's clock. It might be more +expensive to fetch than +.BR PCAP_TSTAMP_HOST_LOWPREC . +.TP 5 +.BR PCAP_TSTAMP_ADAPTER " - " adapter +Time stamp provided by the network adapter on which the capture is being +done. This is a high-precision time stamp, synchronized with the host +operating system's clock. +.TP 5 +.BR PCAP_TSTAMP_ADAPTER_UNSYNCED " - " adapter_unsynced +Time stamp provided by the network adapter on which the capture is being +done. This is a high-precision time stamp; it is not synchronized with +the host operating system's clock. +.RE +.SH SEE ALSO +pcap_set_tstamp_type(3PCAP), +pcap_list_tstamp_types(3PCAP), +pcap_tstamp_type_val_to_name(3PCAP), +pcap_tstamp_name_to_val(3PCAP) diff --git a/pcap-usb-linux.c b/pcap-usb-linux.c new file mode 100644 index 0000000..f1b430c --- /dev/null +++ b/pcap-usb-linux.c @@ -0,0 +1,883 @@ +/* + * Copyright (c) 2006 Paolo Abeni (Italy) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * USB sniffing API implementation for Linux platform + * By Paolo Abeni + * Modifications: Kris Katterjohn + * + */ +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-usb-linux.c,v 1.33 2008-12-23 21:38:50 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "pcap-int.h" +#include "pcap-usb-linux.h" +#include "pcap/usb.h" + +#ifdef NEED_STRERROR_H +#include "strerror.h" +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#ifdef HAVE_LINUX_USBDEVICE_FS_H +/* + * We might need to define __user for + * . + */ +#ifdef HAVE_LINUX_COMPILER_H +#include +#endif /* HAVE_LINUX_COMPILER_H */ +#include +#endif /* HAVE_LINUX_USBDEVICE_FS_H */ + +#define USB_IFACE "usbmon" +#define USB_TEXT_DIR_OLD "/sys/kernel/debug/usbmon" +#define USB_TEXT_DIR "/sys/kernel/debug/usb/usbmon" +#define SYS_USB_BUS_DIR "/sys/bus/usb/devices" +#define PROC_USB_BUS_DIR "/proc/bus/usb" +#define USB_LINE_LEN 4096 + +#if __BYTE_ORDER == __LITTLE_ENDIAN +#define htols(s) s +#define htoll(l) l +#define htol64(ll) ll +#else +#define htols(s) bswap_16(s) +#define htoll(l) bswap_32(l) +#define htol64(ll) bswap_64(ll) +#endif + +struct mon_bin_stats { + u_int32_t queued; + u_int32_t dropped; +}; + +struct mon_bin_get { + pcap_usb_header *hdr; + void *data; + size_t data_len; /* Length of data (can be zero) */ +}; + +struct mon_bin_mfetch { + int32_t *offvec; /* Vector of events fetched */ + int32_t nfetch; /* Number of events to fetch (out: fetched) */ + int32_t nflush; /* Number of events to flush */ +}; + +#define MON_IOC_MAGIC 0x92 + +#define MON_IOCQ_URB_LEN _IO(MON_IOC_MAGIC, 1) +#define MON_IOCX_URB _IOWR(MON_IOC_MAGIC, 2, struct mon_bin_hdr) +#define MON_IOCG_STATS _IOR(MON_IOC_MAGIC, 3, struct mon_bin_stats) +#define MON_IOCT_RING_SIZE _IO(MON_IOC_MAGIC, 4) +#define MON_IOCQ_RING_SIZE _IO(MON_IOC_MAGIC, 5) +#define MON_IOCX_GET _IOW(MON_IOC_MAGIC, 6, struct mon_bin_get) +#define MON_IOCX_MFETCH _IOWR(MON_IOC_MAGIC, 7, struct mon_bin_mfetch) +#define MON_IOCH_MFLUSH _IO(MON_IOC_MAGIC, 8) + +#define MON_BIN_SETUP 0x1 /* setup hdr is present*/ +#define MON_BIN_SETUP_ZERO 0x2 /* setup buffer is not available */ +#define MON_BIN_DATA_ZERO 0x4 /* data buffer is not available */ +#define MON_BIN_ERROR 0x8 + +/* forward declaration */ +static int usb_activate(pcap_t *); +static int usb_stats_linux(pcap_t *, struct pcap_stat *); +static int usb_stats_linux_bin(pcap_t *, struct pcap_stat *); +static int usb_read_linux(pcap_t *, int , pcap_handler , u_char *); +static int usb_read_linux_bin(pcap_t *, int , pcap_handler , u_char *); +static int usb_read_linux_mmap(pcap_t *, int , pcap_handler , u_char *); +static int usb_inject_linux(pcap_t *, const void *, size_t); +static int usb_setdirection_linux(pcap_t *, pcap_direction_t); +static void usb_cleanup_linux_mmap(pcap_t *); + +/* facility to add an USB device to the device list*/ +static int +usb_dev_add(pcap_if_t** alldevsp, int n, char *err_str) +{ + char dev_name[10]; + char dev_descr[30]; + snprintf(dev_name, 10, USB_IFACE"%d", n); + snprintf(dev_descr, 30, "USB bus number %d", n); + + if (pcap_add_if(alldevsp, dev_name, 0, + dev_descr, err_str) < 0) + return -1; + return 0; +} + +int +usb_platform_finddevs(pcap_if_t **alldevsp, char *err_str) +{ + struct dirent* data; + int ret = 0; + DIR* dir; + int n; + char* name; + size_t len; + + /* try scanning sysfs usb bus directory */ + dir = opendir(SYS_USB_BUS_DIR); + if (dir != NULL) { + while ((ret == 0) && ((data = readdir(dir)) != 0)) { + name = data->d_name; + + if (strncmp(name, "usb", 3) != 0) + continue; + + if (sscanf(&name[3], "%d", &n) == 0) + continue; + + ret = usb_dev_add(alldevsp, n, err_str); + } + + closedir(dir); + return ret; + } + + /* that didn't work; try scanning procfs usb bus directory */ + dir = opendir(PROC_USB_BUS_DIR); + if (dir != NULL) { + while ((ret == 0) && ((data = readdir(dir)) != 0)) { + name = data->d_name; + len = strlen(name); + + /* if this file name does not end with a number it's not of our interest */ + if ((len < 1) || !isdigit(name[--len])) + continue; + while (isdigit(name[--len])); + if (sscanf(&name[len+1], "%d", &n) != 1) + continue; + + ret = usb_dev_add(alldevsp, n, err_str); + } + + closedir(dir); + return ret; + } + + /* neither of them worked */ + return 0; +} + +static +int usb_mmap(pcap_t* handle) +{ + int len = ioctl(handle->fd, MON_IOCQ_RING_SIZE); + if (len < 0) + return 0; + + handle->md.mmapbuflen = len; + handle->md.mmapbuf = mmap(0, handle->md.mmapbuflen, PROT_READ, + MAP_SHARED, handle->fd, 0); + return handle->md.mmapbuf != MAP_FAILED; +} + +#define CTRL_TIMEOUT (5*1000) /* milliseconds */ + +#define USB_DIR_IN 0x80 +#define USB_TYPE_STANDARD 0x00 +#define USB_RECIP_DEVICE 0x00 + +#define USB_REQ_GET_DESCRIPTOR 6 + +#define USB_DT_DEVICE 1 + +/* probe the descriptors of the devices attached to the bus */ +/* the descriptors will end up in the captured packet stream */ +/* and be decoded by external apps like wireshark */ +/* without these identifying probes packet data can't be fully decoded */ +static void +probe_devices(int bus) +{ + struct usbdevfs_ctrltransfer ctrl; + struct dirent* data; + int ret = 0; + char buf[40]; + DIR* dir; + + /* scan usb bus directories for device nodes */ + snprintf(buf, sizeof(buf), "/dev/bus/usb/%03d", bus); + dir = opendir(buf); + if (!dir) + return; + + while ((ret >= 0) && ((data = readdir(dir)) != 0)) { + int fd; + char* name = data->d_name; + + if (name[0] == '.') + continue; + + snprintf(buf, sizeof(buf), "/dev/bus/usb/%03d/%s", bus, data->d_name); + + fd = open(buf, O_RDWR); + if (fd == -1) + continue; + + /* + * Sigh. Different kernels have different member names + * for this structure. + */ +#ifdef HAVE_USBDEVFS_CTRLTRANSFER_BREQUESTTYPE + ctrl.bRequestType = USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE; + ctrl.bRequest = USB_REQ_GET_DESCRIPTOR; + ctrl.wValue = USB_DT_DEVICE << 8; + ctrl.wIndex = 0; + ctrl.wLength = sizeof(buf); +#else + ctrl.requesttype = USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE; + ctrl.request = USB_REQ_GET_DESCRIPTOR; + ctrl.value = USB_DT_DEVICE << 8; + ctrl.index = 0; + ctrl.length = sizeof(buf); +#endif + ctrl.data = buf; + ctrl.timeout = CTRL_TIMEOUT; + + ret = ioctl(fd, USBDEVFS_CONTROL, &ctrl); + + close(fd); + } + closedir(dir); +} + +pcap_t * +usb_create(const char *device, char *ebuf) +{ + pcap_t *p; + + p = pcap_create_common(device, ebuf); + if (p == NULL) + return (NULL); + + p->activate_op = usb_activate; + return (p); +} + +static int +usb_activate(pcap_t* handle) +{ + char full_path[USB_LINE_LEN]; + + /* Initialize some components of the pcap structure. */ + handle->bufsize = handle->snapshot; + handle->offset = 0; + handle->linktype = DLT_USB_LINUX; + + handle->inject_op = usb_inject_linux; + handle->setfilter_op = install_bpf_program; /* no kernel filtering */ + handle->setdirection_op = usb_setdirection_linux; + handle->set_datalink_op = NULL; /* can't change data link type */ + handle->getnonblock_op = pcap_getnonblock_fd; + handle->setnonblock_op = pcap_setnonblock_fd; + + /*get usb bus index from device name */ + if (sscanf(handle->opt.source, USB_IFACE"%d", &handle->md.ifindex) != 1) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't get USB bus index from %s", handle->opt.source); + return PCAP_ERROR; + } + + /*now select the read method: try to open binary interface */ + snprintf(full_path, USB_LINE_LEN, LINUX_USB_MON_DEV"%d", handle->md.ifindex); + handle->fd = open(full_path, O_RDONLY, 0); + if (handle->fd >= 0) + { + if (handle->opt.rfmon) { + /* + * Monitor mode doesn't apply to USB devices. + */ + close(handle->fd); + return PCAP_ERROR_RFMON_NOTSUP; + } + + /* binary api is available, try to use fast mmap access */ + if (usb_mmap(handle)) { + handle->linktype = DLT_USB_LINUX_MMAPPED; + handle->stats_op = usb_stats_linux_bin; + handle->read_op = usb_read_linux_mmap; + handle->cleanup_op = usb_cleanup_linux_mmap; + probe_devices(handle->md.ifindex); + + /* + * "handle->fd" is a real file, so "select()" and + * "poll()" work on it. + */ + handle->selectable_fd = handle->fd; + return 0; + } + + /* can't mmap, use plain binary interface access */ + handle->stats_op = usb_stats_linux_bin; + handle->read_op = usb_read_linux_bin; + probe_devices(handle->md.ifindex); + } + else { + /*Binary interface not available, try open text interface */ + snprintf(full_path, USB_LINE_LEN, USB_TEXT_DIR"/%dt", handle->md.ifindex); + handle->fd = open(full_path, O_RDONLY, 0); + if (handle->fd < 0) + { + if (errno == ENOENT) + { + /* + * Not found at the new location; try + * the old location. + */ + snprintf(full_path, USB_LINE_LEN, USB_TEXT_DIR_OLD"/%dt", handle->md.ifindex); + handle->fd = open(full_path, O_RDONLY, 0); + } + if (handle->fd < 0) { + /* no more fallback, give it up*/ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't open USB bus file %s: %s", full_path, strerror(errno)); + return PCAP_ERROR; + } + } + + if (handle->opt.rfmon) { + /* + * Monitor mode doesn't apply to USB devices. + */ + close(handle->fd); + return PCAP_ERROR_RFMON_NOTSUP; + } + + handle->stats_op = usb_stats_linux; + handle->read_op = usb_read_linux; + } + + /* + * "handle->fd" is a real file, so "select()" and "poll()" + * work on it. + */ + handle->selectable_fd = handle->fd; + + /* for plain binary access and text access we need to allocate the read + * buffer */ + handle->buffer = malloc(handle->bufsize); + if (!handle->buffer) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "malloc: %s", pcap_strerror(errno)); + close(handle->fd); + return PCAP_ERROR; + } + return 0; +} + +static inline int +ascii_to_int(char c) +{ + return c < 'A' ? c- '0': ((c<'a') ? c - 'A' + 10: c-'a'+10); +} + +/* + * see /Documentation/usb/usbmon.txt and + * /drivers/usb/mon/mon_text.c for urb string + * format description + */ +static int +usb_read_linux(pcap_t *handle, int max_packets, pcap_handler callback, u_char *user) +{ + /* see: + * /usr/src/linux/Documentation/usb/usbmon.txt + * for message format + */ + unsigned timestamp; + int tag, cnt, ep_num, dev_addr, dummy, ret, urb_len, data_len; + char etype, pipeid1, pipeid2, status[16], urb_tag, line[USB_LINE_LEN]; + char *string = line; + u_char * rawdata = handle->buffer; + struct pcap_pkthdr pkth; + pcap_usb_header* uhdr = (pcap_usb_header*)handle->buffer; + u_char urb_transfer=0; + int incoming=0; + + /* ignore interrupt system call errors */ + do { + ret = read(handle->fd, line, USB_LINE_LEN - 1); + if (handle->break_loop) + { + handle->break_loop = 0; + return -2; + } + } while ((ret == -1) && (errno == EINTR)); + if (ret < 0) + { + if (errno == EAGAIN) + return 0; /* no data there */ + + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't read from fd %d: %s", handle->fd, strerror(errno)); + return -1; + } + + /* read urb header; %n argument may increment return value, but it's + * not mandatory, so does not count on it*/ + string[ret] = 0; + ret = sscanf(string, "%x %d %c %c%c:%d:%d %s%n", &tag, ×tamp, &etype, + &pipeid1, &pipeid2, &dev_addr, &ep_num, status, + &cnt); + if (ret < 8) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't parse USB bus message '%s', too few tokens (expected 8 got %d)", + string, ret); + return -1; + } + uhdr->id = tag; + uhdr->device_address = dev_addr; + uhdr->bus_id = handle->md.ifindex; + uhdr->status = 0; + string += cnt; + + /* don't use usbmon provided timestamp, since it have low precision*/ + if (gettimeofday(&pkth.ts, NULL) < 0) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't get timestamp for message '%s' %d:%s", + string, errno, strerror(errno)); + return -1; + } + uhdr->ts_sec = pkth.ts.tv_sec; + uhdr->ts_usec = pkth.ts.tv_usec; + + /* parse endpoint information */ + if (pipeid1 == 'C') + urb_transfer = URB_CONTROL; + else if (pipeid1 == 'Z') + urb_transfer = URB_ISOCHRONOUS; + else if (pipeid1 == 'I') + urb_transfer = URB_INTERRUPT; + else if (pipeid1 == 'B') + urb_transfer = URB_BULK; + if (pipeid2 == 'i') { + ep_num |= URB_TRANSFER_IN; + incoming = 1; + } + if (etype == 'C') + incoming = !incoming; + + /* direction check*/ + if (incoming) + { + if (handle->direction == PCAP_D_OUT) + return 0; + } + else + if (handle->direction == PCAP_D_IN) + return 0; + uhdr->event_type = etype; + uhdr->transfer_type = urb_transfer; + uhdr->endpoint_number = ep_num; + pkth.caplen = sizeof(pcap_usb_header); + rawdata += sizeof(pcap_usb_header); + + /* check if this is a setup packet */ + ret = sscanf(status, "%d", &dummy); + if (ret != 1) + { + /* this a setup packet, setup data can be filled with underscore if + * usbmon has not been able to read them, so we must parse this fields as + * strings */ + pcap_usb_setup* shdr; + char str1[3], str2[3], str3[5], str4[5], str5[5]; + ret = sscanf(string, "%s %s %s %s %s%n", str1, str2, str3, str4, + str5, &cnt); + if (ret < 5) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't parse USB bus message '%s', too few tokens (expected 5 got %d)", + string, ret); + return -1; + } + string += cnt; + + /* try to convert to corresponding integer */ + shdr = &uhdr->setup; + shdr->bmRequestType = strtoul(str1, 0, 16); + shdr->bRequest = strtoul(str2, 0, 16); + shdr->wValue = htols(strtoul(str3, 0, 16)); + shdr->wIndex = htols(strtoul(str4, 0, 16)); + shdr->wLength = htols(strtoul(str5, 0, 16)); + + uhdr->setup_flag = 0; + } + else + uhdr->setup_flag = 1; + + /* read urb data */ + ret = sscanf(string, " %d%n", &urb_len, &cnt); + if (ret < 1) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't parse urb length from '%s'", string); + return -1; + } + string += cnt; + + /* urb tag is not present if urb length is 0, so we can stop here + * text parsing */ + pkth.len = urb_len+pkth.caplen; + uhdr->urb_len = urb_len; + uhdr->data_flag = 1; + data_len = 0; + if (uhdr->urb_len == 0) + goto got; + + /* check for data presence; data is present if and only if urb tag is '=' */ + if (sscanf(string, " %c", &urb_tag) != 1) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't parse urb tag from '%s'", string); + return -1; + } + + if (urb_tag != '=') + goto got; + + /* skip urb tag and following space */ + string += 3; + + /* if we reach this point we got some urb data*/ + uhdr->data_flag = 0; + + /* read all urb data; if urb length is greater then the usbmon internal + * buffer length used by the kernel to spool the URB, we get only + * a partial information. + * At least until linux 2.6.17 there is no way to set usbmon intenal buffer + * length and default value is 130. */ + while ((string[0] != 0) && (string[1] != 0) && (pkth.caplen < handle->snapshot)) + { + rawdata[0] = ascii_to_int(string[0]) * 16 + ascii_to_int(string[1]); + rawdata++; + string+=2; + if (string[0] == ' ') + string++; + pkth.caplen++; + data_len++; + } + +got: + uhdr->data_len = data_len; + if (pkth.caplen > handle->snapshot) + pkth.caplen = handle->snapshot; + + if (handle->fcode.bf_insns == NULL || + bpf_filter(handle->fcode.bf_insns, handle->buffer, + pkth.len, pkth.caplen)) { + handle->md.packets_read++; + callback(user, &pkth, handle->buffer); + return 1; + } + return 0; /* didn't pass filter */ +} + +static int +usb_inject_linux(pcap_t *handle, const void *buf, size_t size) +{ + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "inject not supported on " + "USB devices"); + return (-1); +} + +static int +usb_stats_linux(pcap_t *handle, struct pcap_stat *stats) +{ + int dummy, ret, consumed, cnt; + char string[USB_LINE_LEN]; + char token[USB_LINE_LEN]; + char * ptr = string; + int fd; + + snprintf(string, USB_LINE_LEN, USB_TEXT_DIR"/%ds", handle->md.ifindex); + fd = open(string, O_RDONLY, 0); + if (fd < 0) + { + if (errno == ENOENT) + { + /* + * Not found at the new location; try the old + * location. + */ + snprintf(string, USB_LINE_LEN, USB_TEXT_DIR_OLD"/%ds", handle->md.ifindex); + fd = open(string, O_RDONLY, 0); + } + if (fd < 0) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't open USB stats file %s: %s", + string, strerror(errno)); + return -1; + } + } + + /* read stats line */ + do { + ret = read(fd, string, USB_LINE_LEN-1); + } while ((ret == -1) && (errno == EINTR)); + close(fd); + + if (ret < 0) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't read stats from fd %d ", fd); + return -1; + } + string[ret] = 0; + + /* extract info on dropped urbs */ + for (consumed=0; consumed < ret; ) { + /* from the sscanf man page: + * The C standard says: "Execution of a %n directive does + * not increment the assignment count returned at the completion + * of execution" but the Corrigendum seems to contradict this. + * Do not make any assumptions on the effect of %n conversions + * on the return value and explicitly check for cnt assignmet*/ + int ntok; + + cnt = -1; + ntok = sscanf(ptr, "%s%n", token, &cnt); + if ((ntok < 1) || (cnt < 0)) + break; + consumed += cnt; + ptr += cnt; + if (strcmp(token, "nreaders") == 0) + ret = sscanf(ptr, "%d", &stats->ps_drop); + else + ret = sscanf(ptr, "%d", &dummy); + if (ntok != 1) + break; + consumed += cnt; + ptr += cnt; + } + + stats->ps_recv = handle->md.packets_read; + stats->ps_ifdrop = 0; + return 0; +} + +static int +usb_setdirection_linux(pcap_t *p, pcap_direction_t d) +{ + p->direction = d; + return 0; +} + + +static int +usb_stats_linux_bin(pcap_t *handle, struct pcap_stat *stats) +{ + int ret; + struct mon_bin_stats st; + ret = ioctl(handle->fd, MON_IOCG_STATS, &st); + if (ret < 0) + { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't read stats from fd %d:%s ", handle->fd, strerror(errno)); + return -1; + } + + stats->ps_recv = handle->md.packets_read + st.queued; + stats->ps_drop = st.dropped; + stats->ps_ifdrop = 0; + return 0; +} + +/* + * see /Documentation/usb/usbmon.txt and + * /drivers/usb/mon/mon_bin.c binary ABI + */ +static int +usb_read_linux_bin(pcap_t *handle, int max_packets, pcap_handler callback, u_char *user) +{ + struct mon_bin_get info; + int ret; + struct pcap_pkthdr pkth; + int clen = handle->snapshot - sizeof(pcap_usb_header); + + /* the usb header is going to be part of 'packet' data*/ + info.hdr = (pcap_usb_header*) handle->buffer; + info.data = handle->buffer + sizeof(pcap_usb_header); + info.data_len = clen; + + /* ignore interrupt system call errors */ + do { + ret = ioctl(handle->fd, MON_IOCX_GET, &info); + if (handle->break_loop) + { + handle->break_loop = 0; + return -2; + } + } while ((ret == -1) && (errno == EINTR)); + if (ret < 0) + { + if (errno == EAGAIN) + return 0; /* no data there */ + + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't read from fd %d: %s", handle->fd, strerror(errno)); + return -1; + } + + /* we can get less that than really captured from kernel, depending on + * snaplen, so adjust header accordingly */ + if (info.hdr->data_len < clen) + clen = info.hdr->data_len; + info.hdr->data_len = clen; + pkth.caplen = clen + sizeof(pcap_usb_header); + pkth.len = info.hdr->data_len + sizeof(pcap_usb_header); + pkth.ts.tv_sec = info.hdr->ts_sec; + pkth.ts.tv_usec = info.hdr->ts_usec; + + if (handle->fcode.bf_insns == NULL || + bpf_filter(handle->fcode.bf_insns, handle->buffer, + pkth.len, pkth.caplen)) { + handle->md.packets_read++; + callback(user, &pkth, handle->buffer); + return 1; + } + + return 0; /* didn't pass filter */ +} + +/* + * see /Documentation/usb/usbmon.txt and + * /drivers/usb/mon/mon_bin.c binary ABI + */ +#define VEC_SIZE 32 +static int +usb_read_linux_mmap(pcap_t *handle, int max_packets, pcap_handler callback, u_char *user) +{ + struct mon_bin_mfetch fetch; + int32_t vec[VEC_SIZE]; + struct pcap_pkthdr pkth; + pcap_usb_header* hdr; + int nflush = 0; + int packets = 0; + int clen, max_clen; + + max_clen = handle->snapshot - sizeof(pcap_usb_header); + + for (;;) { + int i, ret; + int limit = max_packets - packets; + if (limit <= 0) + limit = VEC_SIZE; + if (limit > VEC_SIZE) + limit = VEC_SIZE; + + /* try to fetch as many events as possible*/ + fetch.offvec = vec; + fetch.nfetch = limit; + fetch.nflush = nflush; + /* ignore interrupt system call errors */ + do { + ret = ioctl(handle->fd, MON_IOCX_MFETCH, &fetch); + if (handle->break_loop) + { + handle->break_loop = 0; + return -2; + } + } while ((ret == -1) && (errno == EINTR)); + if (ret < 0) + { + if (errno == EAGAIN) + return 0; /* no data there */ + + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't mfetch fd %d: %s", handle->fd, strerror(errno)); + return -1; + } + + /* keep track of processed events, we will flush them later */ + nflush = fetch.nfetch; + for (i=0; imd.mmapbuf[vec[i]]; + if (hdr->event_type == '@') + continue; + + /* we can get less that than really captured from kernel, depending on + * snaplen, so adjust header accordingly */ + clen = max_clen; + if (hdr->data_len < clen) + clen = hdr->data_len; + + /* get packet info from header*/ + pkth.caplen = clen + sizeof(pcap_usb_header_mmapped); + pkth.len = hdr->data_len + sizeof(pcap_usb_header_mmapped); + pkth.ts.tv_sec = hdr->ts_sec; + pkth.ts.tv_usec = hdr->ts_usec; + + if (handle->fcode.bf_insns == NULL || + bpf_filter(handle->fcode.bf_insns, (u_char*) hdr, + pkth.len, pkth.caplen)) { + handle->md.packets_read++; + callback(user, &pkth, (u_char*) hdr); + packets++; + } + } + + /* with max_packets <= 0 we stop afer the first chunk*/ + if ((max_packets <= 0) || (packets == max_packets)) + break; + } + + /* flush pending events*/ + ioctl(handle->fd, MON_IOCH_MFLUSH, nflush); + return packets; +} + +static void +usb_cleanup_linux_mmap(pcap_t* handle) +{ + /* if we have a memory-mapped buffer, unmap it */ + if (handle->md.mmapbuf != NULL) { + munmap(handle->md.mmapbuf, handle->md.mmapbuflen); + handle->md.mmapbuf = NULL; + } + pcap_cleanup_live_common(handle); +} diff --git a/pcap-usb-linux.h b/pcap-usb-linux.h new file mode 100644 index 0000000..2d9638c --- /dev/null +++ b/pcap-usb-linux.h @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2006 Paolo Abeni (Italy) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * USB sniffing API implementation for Linux platform + * By Paolo Abeni + * + * @(#) $Header: /tcpdump/master/libpcap/pcap-usb-linux.h,v 1.5 2008-04-04 19:37:45 guy Exp $ (LBL) + */ + +/* + * Prototypes for USB-related functions + */ +int usb_platform_finddevs(pcap_if_t **alldevsp, char *err_str); +pcap_t *usb_create(const char *device, char *ebuf); diff --git a/pcap-win32.c b/pcap-win32.c new file mode 100644 index 0000000..d8ed453 --- /dev/null +++ b/pcap-win32.c @@ -0,0 +1,852 @@ +/* + * Copyright (c) 1999 - 2005 NetGroup, Politecnico di Torino (Italy) + * Copyright (c) 2005 - 2008 CACE Technologies, Davis (California) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Politecnico di Torino, CACE Technologies + * nor the names of its contributors may be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-win32.c,v 1.42 2008-05-21 22:15:25 gianluca Exp $ (LBL)"; +#endif + +#include +#include +#ifdef __MINGW32__ +#ifdef __MINGW64__ +#include +#else /*__MINGW64__*/ +#include +#include +#endif /*__MINGW64__*/ +#else /*__MINGW32__*/ +#include +#endif /*__MINGW32__*/ +#ifdef HAVE_DAG_API +#include +#include +#endif /* HAVE_DAG_API */ +#ifdef __MINGW32__ +int* _errno(); +#define errno (*_errno()) +#endif /* __MINGW32__ */ + +static int pcap_setfilter_win32_npf(pcap_t *, struct bpf_program *); +static int pcap_setfilter_win32_dag(pcap_t *, struct bpf_program *); +static int pcap_getnonblock_win32(pcap_t *, char *); +static int pcap_setnonblock_win32(pcap_t *, int, char *); + +/*dimension of the buffer in the pcap_t structure*/ +#define WIN32_DEFAULT_USER_BUFFER_SIZE 256000 + +/*dimension of the buffer in the kernel driver NPF */ +#define WIN32_DEFAULT_KERNEL_BUFFER_SIZE 1000000 + +/* Equivalent to ntohs(), but a lot faster under Windows */ +#define SWAPS(_X) ((_X & 0xff) << 8) | (_X >> 8) + +/* + * Header that the WinPcap driver associates to the packets. + * Once was in bpf.h + */ +struct bpf_hdr { + struct timeval bh_tstamp; /* time stamp */ + bpf_u_int32 bh_caplen; /* length of captured portion */ + bpf_u_int32 bh_datalen; /* original length of packet */ + u_short bh_hdrlen; /* length of bpf header (this struct + plus alignment padding) */ +}; + +CRITICAL_SECTION g_PcapCompileCriticalSection; + +BOOL WINAPI DllMain( + HANDLE hinstDLL, + DWORD dwReason, + LPVOID lpvReserved +) +{ + if (dwReason == DLL_PROCESS_ATTACH) + { + InitializeCriticalSection(&g_PcapCompileCriticalSection); + } + + return TRUE; +} + +/* Start winsock */ +int +wsockinit() +{ + WORD wVersionRequested; + WSADATA wsaData; + int err; + wVersionRequested = MAKEWORD( 1, 1); + err = WSAStartup( wVersionRequested, &wsaData ); + if ( err != 0 ) + { + return -1; + } + return 0; +} + + +static int +pcap_stats_win32(pcap_t *p, struct pcap_stat *ps) +{ + + if(PacketGetStats(p->adapter, (struct bpf_stat*)ps) != TRUE){ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "PacketGetStats error: %s", pcap_win32strerror()); + return -1; + } + + return 0; +} + +/* Set the dimension of the kernel-level capture buffer */ +static int +pcap_setbuff_win32(pcap_t *p, int dim) +{ + if(PacketSetBuff(p->adapter,dim)==FALSE) + { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "driver error: not enough memory to allocate the kernel buffer"); + return -1; + } + return 0; +} + +/* Set the driver working mode */ +static int +pcap_setmode_win32(pcap_t *p, int mode) +{ + if(PacketSetMode(p->adapter,mode)==FALSE) + { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "driver error: working mode not recognized"); + return -1; + } + + return 0; +} + +/*set the minimum amount of data that will release a read call*/ +static int +pcap_setmintocopy_win32(pcap_t *p, int size) +{ + if(PacketSetMinToCopy(p->adapter, size)==FALSE) + { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "driver error: unable to set the requested mintocopy size"); + return -1; + } + return 0; +} + +static int +pcap_read_win32_npf(pcap_t *p, int cnt, pcap_handler callback, u_char *user) +{ + int cc; + int n = 0; + register u_char *bp, *ep; + + cc = p->cc; + if (p->cc == 0) { + /* + * Has "pcap_breakloop()" been called? + */ + if (p->break_loop) { + /* + * Yes - clear the flag that indicates that it + * has, and return -2 to indicate that we were + * told to break out of the loop. + */ + p->break_loop = 0; + return (-2); + } + + /* capture the packets */ + if(PacketReceivePacket(p->adapter,p->Packet,TRUE)==FALSE){ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "read error: PacketReceivePacket failed"); + return (-1); + } + + cc = p->Packet->ulBytesReceived; + + bp = p->Packet->Buffer; + } + else + bp = p->bp; + + /* + * Loop through each packet. + */ +#define bhp ((struct bpf_hdr *)bp) + ep = bp + cc; + while (1) { + register int caplen, hdrlen; + + /* + * Has "pcap_breakloop()" been called? + * If so, return immediately - if we haven't read any + * packets, clear the flag and return -2 to indicate + * that we were told to break out of the loop, otherwise + * leave the flag set, so that the *next* call will break + * out of the loop without having read any packets, and + * return the number of packets we've processed so far. + */ + if (p->break_loop) { + if (n == 0) { + p->break_loop = 0; + return (-2); + } else { + p->bp = bp; + p->cc = ep - bp; + return (n); + } + } + if (bp >= ep) + break; + + caplen = bhp->bh_caplen; + hdrlen = bhp->bh_hdrlen; + + /* + * XXX A bpf_hdr matches a pcap_pkthdr. + */ + (*callback)(user, (struct pcap_pkthdr*)bp, bp + hdrlen); + bp += Packet_WORDALIGN(caplen + hdrlen); + if (++n >= cnt && cnt > 0) { + p->bp = bp; + p->cc = ep - bp; + return (n); + } + } +#undef bhp + p->cc = 0; + return (n); +} + +#ifdef HAVE_DAG_API +static int +pcap_read_win32_dag(pcap_t *p, int cnt, pcap_handler callback, u_char *user) +{ + u_char *dp = NULL; + int packet_len = 0, caplen = 0; + struct pcap_pkthdr pcap_header; + u_char *endofbuf; + int n = 0; + dag_record_t *header; + unsigned erf_record_len; + ULONGLONG ts; + int cc; + unsigned swt; + unsigned dfp = p->adapter->DagFastProcess; + + cc = p->cc; + if (cc == 0) /* Get new packets only if we have processed all the ones of the previous read */ + { + /* Get new packets from the network */ + if(PacketReceivePacket(p->adapter, p->Packet, TRUE)==FALSE){ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "read error: PacketReceivePacket failed"); + return (-1); + } + + cc = p->Packet->ulBytesReceived; + if(cc == 0) + /* The timeout has expired but we no packets arrived */ + return 0; + header = (dag_record_t*)p->adapter->DagBuffer; + } + else + header = (dag_record_t*)p->bp; + + endofbuf = (char*)header + cc; + + /* + * Cycle through the packets + */ + do + { + erf_record_len = SWAPS(header->rlen); + if((char*)header + erf_record_len > endofbuf) + break; + + /* Increase the number of captured packets */ + p->md.stat.ps_recv++; + + /* Find the beginning of the packet */ + dp = ((u_char *)header) + dag_record_size; + + /* Determine actual packet len */ + switch(header->type) + { + case TYPE_ATM: + packet_len = ATM_SNAPLEN; + caplen = ATM_SNAPLEN; + dp += 4; + + break; + + case TYPE_ETH: + swt = SWAPS(header->wlen); + packet_len = swt - (p->md.dag_fcs_bits); + caplen = erf_record_len - dag_record_size - 2; + if (caplen > packet_len) + { + caplen = packet_len; + } + dp += 2; + + break; + + case TYPE_HDLC_POS: + swt = SWAPS(header->wlen); + packet_len = swt - (p->md.dag_fcs_bits); + caplen = erf_record_len - dag_record_size; + if (caplen > packet_len) + { + caplen = packet_len; + } + + break; + } + + if(caplen > p->snapshot) + caplen = p->snapshot; + + /* + * Has "pcap_breakloop()" been called? + * If so, return immediately - if we haven't read any + * packets, clear the flag and return -2 to indicate + * that we were told to break out of the loop, otherwise + * leave the flag set, so that the *next* call will break + * out of the loop without having read any packets, and + * return the number of packets we've processed so far. + */ + if (p->break_loop) + { + if (n == 0) + { + p->break_loop = 0; + return (-2); + } + else + { + p->bp = (char*)header; + p->cc = endofbuf - (char*)header; + return (n); + } + } + + if(!dfp) + { + /* convert between timestamp formats */ + ts = header->ts; + pcap_header.ts.tv_sec = (int)(ts >> 32); + ts = (ts & 0xffffffffi64) * 1000000; + ts += 0x80000000; /* rounding */ + pcap_header.ts.tv_usec = (int)(ts >> 32); + if (pcap_header.ts.tv_usec >= 1000000) { + pcap_header.ts.tv_usec -= 1000000; + pcap_header.ts.tv_sec++; + } + } + + /* No underlaying filtering system. We need to filter on our own */ + if (p->fcode.bf_insns) + { + if (bpf_filter(p->fcode.bf_insns, dp, packet_len, caplen) == 0) + { + /* Move to next packet */ + header = (dag_record_t*)((char*)header + erf_record_len); + continue; + } + } + + /* Fill the header for the user suppplied callback function */ + pcap_header.caplen = caplen; + pcap_header.len = packet_len; + + /* Call the callback function */ + (*callback)(user, &pcap_header, dp); + + /* Move to next packet */ + header = (dag_record_t*)((char*)header + erf_record_len); + + /* Stop if the number of packets requested by user has been reached*/ + if (++n >= cnt && cnt > 0) + { + p->bp = (char*)header; + p->cc = endofbuf - (char*)header; + return (n); + } + } + while((u_char*)header < endofbuf); + + return 1; +} +#endif /* HAVE_DAG_API */ + +/* Send a packet to the network */ +static int +pcap_inject_win32(pcap_t *p, const void *buf, size_t size){ + LPPACKET PacketToSend; + + PacketToSend=PacketAllocatePacket(); + + if (PacketToSend == NULL) + { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send error: PacketAllocatePacket failed"); + return -1; + } + + PacketInitPacket(PacketToSend,(PVOID)buf,size); + if(PacketSendPacket(p->adapter,PacketToSend,TRUE) == FALSE){ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send error: PacketSendPacket failed"); + PacketFreePacket(PacketToSend); + return -1; + } + + PacketFreePacket(PacketToSend); + + /* + * We assume it all got sent if "PacketSendPacket()" succeeded. + * "pcap_inject()" is expected to return the number of bytes + * sent. + */ + return size; +} + +static void +pcap_cleanup_win32(pcap_t *p) +{ + if (p->adapter != NULL) { + PacketCloseAdapter(p->adapter); + p->adapter = NULL; + } + if (p->Packet) { + PacketFreePacket(p->Packet); + p->Packet = NULL; + } + pcap_cleanup_live_common(p); +} + +static int +pcap_activate_win32(pcap_t *p) +{ + NetType type; + + if (p->opt.rfmon) { + /* + * No monitor mode on Windows. It could be done on + * Vista with drivers that support the native 802.11 + * mechanism and monitor mode. + */ + return (PCAP_ERROR_RFMON_NOTSUP); + } + + /* Init WinSock */ + wsockinit(); + + p->adapter = PacketOpenAdapter(p->opt.source); + + if (p->adapter == NULL) + { + /* Adapter detected but we are not able to open it. Return failure. */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "Error opening adapter: %s", pcap_win32strerror()); + return PCAP_ERROR; + } + + /*get network type*/ + if(PacketGetNetType (p->adapter,&type) == FALSE) + { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "Cannot determine the network type: %s", pcap_win32strerror()); + goto bad; + } + + /*Set the linktype*/ + switch (type.LinkType) + { + case NdisMediumWan: + p->linktype = DLT_EN10MB; + break; + + case NdisMedium802_3: + p->linktype = DLT_EN10MB; + /* + * This is (presumably) a real Ethernet capture; give it a + * link-layer-type list with DLT_EN10MB and DLT_DOCSIS, so + * that an application can let you choose it, in case you're + * capturing DOCSIS traffic that a Cisco Cable Modem + * Termination System is putting out onto an Ethernet (it + * doesn't put an Ethernet header onto the wire, it puts raw + * DOCSIS frames out on the wire inside the low-level + * Ethernet framing). + */ + p->dlt_list = (u_int *) malloc(sizeof(u_int) * 2); + /* + * If that fails, just leave the list empty. + */ + if (p->dlt_list != NULL) { + p->dlt_list[0] = DLT_EN10MB; + p->dlt_list[1] = DLT_DOCSIS; + p->dlt_count = 2; + } + break; + + case NdisMediumFddi: + p->linktype = DLT_FDDI; + break; + + case NdisMedium802_5: + p->linktype = DLT_IEEE802; + break; + + case NdisMediumArcnetRaw: + p->linktype = DLT_ARCNET; + break; + + case NdisMediumArcnet878_2: + p->linktype = DLT_ARCNET; + break; + + case NdisMediumAtm: + p->linktype = DLT_ATM_RFC1483; + break; + + case NdisMediumCHDLC: + p->linktype = DLT_CHDLC; + break; + + case NdisMediumPPPSerial: + p->linktype = DLT_PPP_SERIAL; + break; + + case NdisMediumNull: + p->linktype = DLT_NULL; + break; + + case NdisMediumBare80211: + p->linktype = DLT_IEEE802_11; + break; + + case NdisMediumRadio80211: + p->linktype = DLT_IEEE802_11_RADIO; + break; + + case NdisMediumPpi: + p->linktype = DLT_PPI; + break; + + default: + p->linktype = DLT_EN10MB; /*an unknown adapter is assumed to be ethernet*/ + break; + } + + /* Set promiscuous mode */ + if (p->opt.promisc) + { + + if (PacketSetHwFilter(p->adapter,NDIS_PACKET_TYPE_PROMISCUOUS) == FALSE) + { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "failed to set hardware filter to promiscuous mode"); + goto bad; + } + } + else + { + if (PacketSetHwFilter(p->adapter,NDIS_PACKET_TYPE_ALL_LOCAL) == FALSE) + { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "failed to set hardware filter to non-promiscuous mode"); + goto bad; + } + } + + /* Set the buffer size */ + p->bufsize = WIN32_DEFAULT_USER_BUFFER_SIZE; + + /* allocate Packet structure used during the capture */ + if((p->Packet = PacketAllocatePacket())==NULL) + { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "failed to allocate the PACKET structure"); + goto bad; + } + + if(!(p->adapter->Flags & INFO_FLAG_DAG_CARD)) + { + /* + * Traditional Adapter + */ + /* + * If the buffer size wasn't explicitly set, default to + * WIN32_DEFAULT_USER_BUFFER_SIZE. + */ + if (p->opt.buffer_size == 0) + p->opt.buffer_size = WIN32_DEFAULT_KERNEL_BUFFER_SIZE; + + if(PacketSetBuff(p->adapter,p->opt.buffer_size)==FALSE) + { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "driver error: not enough memory to allocate the kernel buffer"); + goto bad; + } + + p->buffer = (u_char *)malloc(p->bufsize); + if (p->buffer == NULL) + { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); + goto bad; + } + + PacketInitPacket(p->Packet,(BYTE*)p->buffer,p->bufsize); + + /* tell the driver to copy the buffer only if it contains at least 16K */ + if(PacketSetMinToCopy(p->adapter,16000)==FALSE) + { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE,"Error calling PacketSetMinToCopy: %s", pcap_win32strerror()); + goto bad; + } + } + else +#ifdef HAVE_DAG_API + { + /* + * Dag Card + */ + LONG status; + HKEY dagkey; + DWORD lptype; + DWORD lpcbdata; + int postype = 0; + char keyname[512]; + + snprintf(keyname, sizeof(keyname), "%s\\CardParams\\%s", + "SYSTEM\\CurrentControlSet\\Services\\DAG", + strstr(_strlwr(p->opt.source), "dag")); + do + { + status = RegOpenKeyEx(HKEY_LOCAL_MACHINE, keyname, 0, KEY_READ, &dagkey); + if(status != ERROR_SUCCESS) + break; + + status = RegQueryValueEx(dagkey, + "PosType", + NULL, + &lptype, + (char*)&postype, + &lpcbdata); + + if(status != ERROR_SUCCESS) + { + postype = 0; + } + + RegCloseKey(dagkey); + } + while(FALSE); + + + p->snapshot = PacketSetSnapLen(p->adapter, snaplen); + + /* Set the length of the FCS associated to any packet. This value + * will be subtracted to the packet length */ + p->md.dag_fcs_bits = p->adapter->DagFcsLen; + } +#else + goto bad; +#endif /* HAVE_DAG_API */ + + PacketSetReadTimeout(p->adapter, p->md.timeout); + +#ifdef HAVE_DAG_API + if(p->adapter->Flags & INFO_FLAG_DAG_CARD) + { + /* install dag specific handlers for read and setfilter */ + p->read_op = pcap_read_win32_dag; + p->setfilter_op = pcap_setfilter_win32_dag; + } + else + { +#endif /* HAVE_DAG_API */ + /* install traditional npf handlers for read and setfilter */ + p->read_op = pcap_read_win32_npf; + p->setfilter_op = pcap_setfilter_win32_npf; +#ifdef HAVE_DAG_API + } +#endif /* HAVE_DAG_API */ + p->setdirection_op = NULL; /* Not implemented. */ + /* XXX - can this be implemented on some versions of Windows? */ + p->inject_op = pcap_inject_win32; + p->set_datalink_op = NULL; /* can't change data link type */ + p->getnonblock_op = pcap_getnonblock_win32; + p->setnonblock_op = pcap_setnonblock_win32; + p->stats_op = pcap_stats_win32; + p->setbuff_op = pcap_setbuff_win32; + p->setmode_op = pcap_setmode_win32; + p->setmintocopy_op = pcap_setmintocopy_win32; + p->cleanup_op = pcap_cleanup_win32; + + return (0); +bad: + pcap_cleanup_win32(p); + return (PCAP_ERROR); +} + +pcap_t * +pcap_create(const char *device, char *ebuf) +{ + pcap_t *p; + + if (strlen(device) == 1) + { + /* + * It's probably a unicode string + * Convert to ascii and pass it to pcap_create_common + * + * This wonderful hack is needed because pcap_lookupdev still returns + * unicode strings, and it's used by windump when no device is specified + * in the command line + */ + size_t length; + char* deviceAscii; + + length = wcslen((wchar_t*)device); + + deviceAscii = (char*)malloc(length + 1); + + if (deviceAscii == NULL) + { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "Malloc failed"); + return NULL; + } + + snprintf(deviceAscii, length + 1, "%ws", (wchar_t*)device); + p = pcap_create_common(deviceAscii, ebuf); + free(deviceAscii); + } + else + { + p = pcap_create_common(device, ebuf); + } + + if (p == NULL) + return (NULL); + + p->activate_op = pcap_activate_win32; + return (p); +} + +static int +pcap_setfilter_win32_npf(pcap_t *p, struct bpf_program *fp) +{ + if(PacketSetBpf(p->adapter,fp)==FALSE){ + /* + * Kernel filter not installed. + * XXX - fall back on userland filtering, as is done + * on other platforms? + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "Driver error: cannot set bpf filter: %s", pcap_win32strerror()); + return (-1); + } + + /* + * Discard any previously-received packets, as they might have + * passed whatever filter was formerly in effect, but might + * not pass this filter (BIOCSETF discards packets buffered + * in the kernel, so you can lose packets in any case). + */ + p->cc = 0; + return (0); +} + +/* + * We filter at user level, since the kernel driver does't process the packets + */ +static int +pcap_setfilter_win32_dag(pcap_t *p, struct bpf_program *fp) { + + if(!fp) + { + strncpy(p->errbuf, "setfilter: No filter specified", sizeof(p->errbuf)); + return -1; + } + + /* Install a user level filter */ + if (install_bpf_program(p, fp) < 0) + { + snprintf(p->errbuf, sizeof(p->errbuf), + "setfilter, unable to install the filter: %s", pcap_strerror(errno)); + return -1; + } + + p->md.use_bpf = 0; + + return (0); +} + +static int +pcap_getnonblock_win32(pcap_t *p, char *errbuf) +{ + /* + * XXX - if there were a PacketGetReadTimeout() call, we + * would use it, and return 1 if the timeout is -1 + * and 0 otherwise. + */ + return (p->nonblock); +} + +static int +pcap_setnonblock_win32(pcap_t *p, int nonblock, char *errbuf) +{ + int newtimeout; + + if (nonblock) { + /* + * Set the read timeout to -1 for non-blocking mode. + */ + newtimeout = -1; + } else { + /* + * Restore the timeout set when the device was opened. + * (Note that this may be -1, in which case we're not + * really leaving non-blocking mode.) + */ + newtimeout = p->md.timeout; + } + if (!PacketSetReadTimeout(p->adapter, newtimeout)) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "PacketSetReadTimeout: %s", pcap_win32strerror()); + return (-1); + } + p->nonblock = (newtimeout == -1); + return (0); +} + +/*platform-dependent routine to add devices other than NDIS interfaces*/ +int +pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf) +{ + return (0); +} diff --git a/pcap.3pcap.in b/pcap.3pcap.in new file mode 100644 index 0000000..6f99cc5 --- /dev/null +++ b/pcap.3pcap.in @@ -0,0 +1,883 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap.3pcap.in,v 1.1 2008-10-21 07:33:01 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP 3PCAP "4 April 2008" +.SH NAME +pcap \- Packet Capture library +.SH SYNOPSIS +.nf +.ft B +#include +.LP +.ft B +.ft +.fi +.SH DESCRIPTION +The Packet Capture library +provides a high level interface to packet capture systems. All packets +on the network, even those destined for other hosts, are accessible +through this mechanism. +It also supports saving captured packets to a ``savefile'', and reading +packets from a ``savefile''. +.SS Opening a capture handle for reading +To open a handle for a live capture, given the name of the network or +other interface on which the capture should be done, call +.BR pcap_create (), +set the appropriate options on the handle, and then activate it with +.BR pcap_activate (). +.PP +To obtain a list of devices that can be opened for a live capture, call +.BR pcap_findalldevs (); +to free the list returned by +.BR pcap_findalldevs (), +call +.BR pcap_freealldevs (). +.BR pcap_lookupdev () +will return the first device on that list that is not a ``loopback`` +network interface. +.PP +To open a handle for a ``savefile'' from which to read packets, given the +pathname of the ``savefile'', call +.BR pcap_open_offline (); +to set up a handle for a ``savefile'', given a +.B "FILE\ *" +referring to a file already opened for reading, call +.BR pcap_fopen_offline (). +.PP +In order to get a ``fake'' +.B pcap_t +for use in routines that require a +.B pcap_t +as an argument, such as routines to open a ``savefile'' for writing and +to compile a filter expression, call +.BR pcap_open_dead (). +.PP +.BR pcap_create (), +.BR pcap_open_offline (), +.BR pcap_fopen_offline (), +and +.BR pcap_open_dead () +return a pointer to a +.BR pcap_t , +which is the handle used for reading packets from the capture stream or +the ``savefile'', and for finding out information about the capture +stream or ``savefile''. +To close a handle, use +.BR pcap_close (). +.PP +The options that can be set on a capture handle include +.IP "snapshot length" +If, when capturing, you capture the entire contents of the packet, that +requires more CPU time to copy the packet to your application, more disk +and possibly network bandwidth to write the packet data to a file, and +more disk space to save the packet. If you don't need the entire +contents of the packet - for example, if you are only interested in the +TCP headers of packets - you can set the "snapshot length" for the +capture to an appropriate value. If the snapshot length is set to +.IR snaplen , +and +.I snaplen +is less +than the size of a packet that is captured, only the first +.I snaplen +bytes of that packet will be captured and provided as packet data. +.IP +A snapshot length of 65535 should be sufficient, on most if not all +networks, to capture all the data available from the packet. +.IP +The snapshot length is set with +.BR pcap_set_snaplen (). +.IP "promiscuous mode" +On broadcast LANs such as Ethernet, if the network isn't switched, or if +the adapter is connected to a "mirror port" on a switch to which all +packets passing through the switch are sent, a network adapter receives +all packets on the LAN, including unicast or multicast packets not sent +to a network address that the network adapter isn't configured to +recognize. +.IP +Normally, the adapter will discard those packets; however, many network +adapters support "promiscuous mode", which is a mode in which all +packets, even if they are not sent to an address that the adapter +recognizes, are provided to the host. This is useful for passively +capturing traffic between two or more other hosts for analysis. +.IP +Note that even if an application does not set promiscuous mode, the +adapter could well be in promiscuous mode for some other reason. +.IP +For now, this doesn't work on the "any" device; if an argument of "any" +or NULL is supplied, the setting of promiscuous mode is ignored. +.IP +Promiscuous mode is set with +.BR pcap_set_promisc (). +.IP "monitor mode" +On IEEE 802.11 wireless LANs, even if an adapter is in promiscuous mode, +it will supply to the host only frames for the network with which it's +associated. It might also supply only data frames, not management or +control frames, and might not provide the 802.11 header or radio +information pseudo-header for those frames. +.IP +In "monitor mode", sometimes also called "rfmon mode" (for "Radio +Frequency MONitor"), the adapter will supply all frames that it +receives, with 802.11 headers, and might supply a pseudo-header with +radio information about the frame as well. +.IP +Note that in monitor mode the adapter might disassociate from the +network with which it's associated, so that you will not be able to use +any wireless networks with that adapter. This could prevent accessing +files on a network server, or resolving host names or network addresses, +if you are capturing in monitor mode and are not connected to another +network with another adapter. +.IP +Monitor mode is set with +.BR pcap_set_rfmon (), +and +.BR pcap_can_set_rfmon () +can be used to determine whether an adapter can be put into monitor +mode. +.IP "read timeout" +If, when capturing, packets are delivered as soon as they arrive, the +application capturing the packets will be woken up for each packet as it +arrives, and might have to make one or more calls to the operating +system to fetch each packet. +.IP +If, instead, packets are not delivered as soon as they arrive, but are +delivered after a short delay (called a "read timeout"), more than one +packet can be accumulated before the packets are delivered, so that a +single wakeup would be done for multiple packets, and each set of calls +made to the operating system would supply multiple packets, rather than +a single packet. This reduces the per-packet CPU overhead if packets +are arriving at a high rate, increasing the number of packets per second +that can be captured. +.IP +The read timeout is required so that an application won't wait for the +operating system's capture buffer to fill up before packets are +delivered; if packets are arriving slowly, that wait could take an +arbitrarily long period of time. +.IP +Not all platforms support a read timeout; on platforms that +don't, the read timeout is ignored. A zero value for the timeout, +on platforms that support a read timeout, +will cause a read to wait forever to allow enough packets to +arrive, with no timeout. +.IP +.BR NOTE : +the read timeout cannot be used to cause calls that read +packets to return within a limited period of time, because, on some +platforms, the read timeout isn't supported, and, on other platforms, +the timer doesn't start until at least one packet arrives. This means +that the read timeout should +.B NOT +be used, for example, in an interactive application to allow the packet +capture loop to ``poll'' for user input periodically, as there's no +guarantee that a call reading packets will return after the timeout +expires even if no packets have arrived. +.IP +The read timeout is set with +.BR pcap_set_timeout (). +.IP "buffer size" +Packets that arrive for a capture are stored in a buffer, so that they +do not have to be read by the application as soon as they arrive. On +some platforms, the buffer's size can be set; a size that's too small +could mean that, if too many packets are being captured and the snapshot +length doesn't limit the amount of data that's buffered, packets could +be dropped if the buffer fills up before the application can read +packets from it, while a size that's too large could use more +non-pageable operating system memory than is necessary to prevent +packets from being dropped. +.IP +The buffer size is set with +.BR pcap_set_buffer_size (). +.IP "timestamp type" +On some platforms, the time stamp given to packets on live captures can +come from different sources that can have different resolutions or that +can have different relationships to the time values for the current time +supplied by routines on the native operating system. See +.BR pcap-tstamp (@MAN_MISC_INFO@) +for a list of time stamp types. +.IP +The time stamp type is set with +.BR pcap_set_tstamp_type (). +.PP +Reading packets from a network interface may require that you have +special privileges: +.TP +.B Under SunOS 3.x or 4.x with NIT or BPF: +You must have read access to +.I /dev/nit +or +.IR /dev/bpf* . +.TP +.B Under Solaris with DLPI: +You must have read/write access to the network pseudo device, e.g. +.IR /dev/le . +On at least some versions of Solaris, however, this is not sufficient to +allow +.I tcpdump +to capture in promiscuous mode; on those versions of Solaris, you must +be root, or the application capturing packets +must be installed setuid to root, in order to capture in promiscuous +mode. Note that, on many (perhaps all) interfaces, if you don't capture +in promiscuous mode, you will not see any outgoing packets, so a capture +not done in promiscuous mode may not be very useful. +.IP +In newer versions of Solaris, you must have been given the +.B net_rawaccess +privilege; this is both necessary and sufficient to give you access to the +network pseudo-device - there is no need to change the privileges on +that device. A user can be given that privilege by, for example, adding +that privilege to the user's +.B defaultpriv +key with the +.B usermod (1M) +command. +.TP +.B Under HP-UX with DLPI: +You must be root or the application capturing packets must be installed +setuid to root. +.TP +.B Under IRIX with snoop: +You must be root or the application capturing packets must be installed +setuid to root. +.TP +.B Under Linux: +You must be root or the application capturing packets must be installed +setuid to root (unless your distribution has a kernel +that supports capability bits such as CAP_NET_RAW and code to allow +those capability bits to be given to particular accounts and to cause +those bits to be set on a user's initial processes when they log in, in +which case you must have CAP_NET_RAW in order to capture and +CAP_NET_ADMIN to enumerate network devices with, for example, the +.B \-D +flag). +.TP +.B Under ULTRIX and Digital UNIX/Tru64 UNIX: +Any user may capture network traffic. +However, no user (not even the super-user) can capture in promiscuous +mode on an interface unless the super-user has enabled promiscuous-mode +operation on that interface using +.IR pfconfig (8), +and no user (not even the super-user) can capture unicast traffic +received by or sent by the machine on an interface unless the super-user +has enabled copy-all-mode operation on that interface using +.IR pfconfig , +so +.I useful +packet capture on an interface probably requires that either +promiscuous-mode or copy-all-mode operation, or both modes of +operation, be enabled on that interface. +.TP +.B Under BSD (this includes Mac OS X): +You must have read access to +.I /dev/bpf* +on systems that don't have a cloning BPF device, or to +.I /dev/bpf +on systems that do. +On BSDs with a devfs (this includes Mac OS X), this might involve more +than just having somebody with super-user access setting the ownership +or permissions on the BPF devices - it might involve configuring devfs +to set the ownership or permissions every time the system is booted, +if the system even supports that; if it doesn't support that, you might +have to find some other way to make that happen at boot time. +.PP +Reading a saved packet file doesn't require special privileges. +.PP +The packets read from the handle may include a ``pseudo-header'' +containing various forms of packet meta-data, and probably includes a +link-layer header whose contents can differ for different network +interfaces. To determine the format of the packets supplied by the +handle, call +.BR pcap_datalink (); +.I http://www.tcpdump.org/linktypes.html +lists the values it returns and describes the packet formats that +correspond to those values. +.PP +To obtain the +.B "FILE\ *" +corresponding to a +.B pcap_t +opened for a ``savefile'', call +.BR pcap_file (). +.TP +.B Routines +.RS +.TP +.BR pcap_create (3PCAP) +get a +.B pcap_t +for live capture +.TP +.BR pcap_activate (3PCAP) +activate a +.B pcap_t +for live capture +.TP +.BR pcap_findalldevs (3PCAP) +get a list of devices that can be opened for a live capture +.TP +.BR pcap_freealldevs (3PCAP) +free list of devices +.TP +.BR pcap_lookupdev (3PCAP) +get first non-loopback device on that list +.TP +.BR pcap_open_offline (3PCAP) +open a +.B pcap_t +for a ``savefile'', given a pathname +.TP +.BR pcap_fopen_offline (3PCAP) +open a +.B pcap_t +for a ``savefile'', given a +.B "FILE\ *" +.TP +.BR pcap_open_dead (3PCAP) +create a ``fake'' +.B pcap_t +.TP +.BR pcap_close (3PCAP) +close a +.B pcap_t +.TP +.BR pcap_set_snaplen (3PCAP) +set the snapshot length for a not-yet-activated +.B pcap_t +for live capture +.TP +.BR pcap_snapshot (3PCAP) +get the snapshot length for a +.B pcap_t +.TP +.BR pcap_set_promisc (3PCAP) +set promiscuous mode for a not-yet-activated +.B pcap_t +for live capture +.TP +.BR pcap_set_rfmon (3PCAP) +set monitor mode for a not-yet-activated +.B pcap_t +for live capture +.TP +.BR pcap_can_set_rfmon (3PCAP) +determine whether monitor mode can be set for a +.B pcap_t +for live capture +.TP +.BR pcap_set_timeout (3PCAP) +set read timeout for a not-yet-activated +.B pcap_t +for live capture +.TP +.BR pcap_set_buffer_size (3PCAP) +set buffer size for a not-yet-activated +.B pcap_t +for live capture +.TP +.BR pcap_set_tstamp_type (3PCAP) +set time stamp type for a not-yet-activated +.B pcap_t +for live capture +.TP +.BR pcap_list_tstamp_types (3PCAP) +get list of available time stamp types for a not-yet-activated +.B pcap_t +for live capture +.TP +.BR pcap_free_tstamp_types (3PCAP) +free list of available time stamp types +.TP +.BR pcap_tstamp_type_val_to_name (3PCAP) +get name for a time stamp type +.TP +.BR pcap_tstamp_type_val_to_description (3PCAP) +get description for a time stamp type +.TP +.BR pcap_tstamp_name_to_val (3PCAP) +get time stamp type corresponding to a name +.TP +.BR pcap_datalink (3PCAP) +get link-layer header type for a +.B pcap_t +.TP +.BR pcap_file (3PCAP) +get the +.B "FILE\ *" +for a +.B pcap_t +opened for a ``savefile'' +.TP +.BR pcap_is_swapped (3PCAP) +determine whether a ``savefile'' being read came from a machine with the +opposite byte order +.TP +.BR pcap_major_version (3PCAP) +.PD 0 +.TP +.BR pcap_minor_version (3PCAP) +get the major and minor version of the file format version for a +``savefile'' +.PD +.RE +.SS Selecting a link-layer header type for a live capture +Some devices may provide more than one link-layer header type. To +obtain a list of all link-layer header types provided by a device, call +.BR pcap_list_datalinks () +on an activated +.B pcap_t +for the device. +To free a list of link-layer header types, call +.BR pcap_free_datalinks (). +To set the link-layer header type for a device, call +.BR pcap_set_datalink (). +This should be done after the device has been activated but before any +packets are read and before any filters are compiled or installed. +.TP +.B Routines +.RS +.TP +.BR pcap_list_datalinks (3PCAP) +get a list of link-layer header types for a device +.TP +.BR pcap_free_datalinks (3PCAP) +free list of link-layer header types +.TP +.BR pcap_set_datalink (3PCAP) +set link-layer header type for a device +.TP +.BR pcap_datalink_val_to_name (3PCAP) +get name for a link-layer header type +.TP +.BR pcap_datalink_val_to_description (3PCAP) +get description for a link-layer header type +.TP +.BR pcap_datalink_name_to_val (3PCAP) +get link-layer header type corresponding to a name +.RE +.SS Reading packets +Packets are read with +.BR pcap_dispatch () +or +.BR pcap_loop (), +which process one or more packets, calling a callback routine for each +packet, or with +.BR pcap_next () +or +.BR pcap_next_ex (), +which return the next packet. +The callback for +.BR pcap_dispatch () +and +.BR pcap_loop () +is supplied a pointer to a +.IR "struct pcap_pkthdr" , +which includes the following members: +.RS +.TP +.B ts +a +.I struct timeval +containing the time when the packet was captured +.TP +.B caplen +a +.I bpf_u_int32 +giving the number of bytes of the packet that are available from the +capture +.TP +.B len +a +.I bpf_u_int32 +giving the length of the packet, in bytes (which might be more than the +number of bytes available from the capture, if the length of the packet +is larger than the maximum number of bytes to capture). +.RE +.PP +.BR pcap_next_ex () +supplies that pointer through a pointer argument. +.BR pcap_next () +is passed an argument that points to a +.I struct pcap_pkthdr +structure, and fills it in. +.PP +The callback is also supplied a +.I const u_char +pointer to the first +.B caplen +(as given in the +.I struct pcap_pkthdr +a pointer to which is passed to the callback routine) +bytes of data from the packet. This won't necessarily be the entire +packet; to capture the entire packet, you will have to provide a value +for +.I snaplen +in your call to +.BR pcap_set_snaplen () +that is sufficiently large to get all of the packet's data - a value of +65535 should be sufficient on most if not all networks). When reading +from a ``savefile'', the snapshot length specified when the capture was +performed will limit the amount of packet data available. +.BR pcap_next () +returns that pointer; +.BR pcap_next_ex () +supplies that pointer through a pointer argument. +.PP +To force the loop in +.BR pcap_dispatch () +or +.BR pcap_loop () +to terminate, call +.BR pcap_breakloop (). +.PP +By default, when reading packets from an interface opened for a live +capture, +.BR pcap_dispatch (), +.BR pcap_next (), +and +.BR pcap_next_ex () +will, if no packets are currently available to be read, block waiting +for packets to become available. On some, but +.I not +all, platforms, if a read timeout was specified, the wait will terminate +after the read timeout expires; applications should be prepared for +this, as it happens on some platforms, but should not rely on it, as it +does not happen on other platforms. +.PP +A handle can be put into ``non-blocking mode'', so that those routines +will, rather than blocking, return an indication that no packets are +available to read. Call +.BR pcap_setnonblock () +to put a handle into non-blocking mode or to take it out of non-blocking +mode; call +.BR pcap_getnonblock () +to determine whether a handle is in non-blocking mode. Note that +non-blocking mode does not work correctly in Mac OS X 10.6. +.PP +Non-blocking mode is often combined with routines such as +.BR select (2) +or +.BR poll (2) +or other routines a platform offers to wait for the availability of data +on any of a set of descriptors. To obtain, for a handle, a descriptor +that can be used in those routines, call +.BR pcap_get_selectable_fd (). +Not all handles have such a descriptor available; +.BR pcap_get_selectable_fd () +will return \-1 if no such descriptor exists. In addition, for various +reasons, one or more of those routines will not work properly with the +descriptor; the documentation for +.BR pcap_get_selectable_fd () +gives details. +.TP +.B Routines +.RS +.TP +.BR pcap_dispatch (3PCAP) +read a bufferful of packets from a +.B pcap_t +open for a live capture or the full set of packets from a +.B pcap_t +open for a ``savefile'' +.TP +.BR pcap_loop (3PCAP) +read packets from a +.B pcap_t +until an interrupt or error occurs +.TP +.BR pcap_next (3PCAP) +read the next packet from a +.B pcap_t +without an indication whether an error occurred +.TP +.BR pcap_next_ex (3PCAP) +read the next packet from a +.B pcap_t +with an error indication on an error +.TP +.BR pcap_breakloop (3PCAP) +prematurely terminate the loop in +.BR pcap_dispatch () +or +.BR pcap_loop () +.TP +.BR pcap_setnonblock (3PCAP) +set or clear non-blocking mode on a +.B pcap_t +.TP +.BR pcap_getnonblock (3PCAP) +get the state of non-blocking mode for a +.B pcap_t +.TP +.BR pcap_get_selectable_fd (3PCAP) +attempt to get a descriptor for a +.B pcap_t +that can be used in calls such as +.BR select (2) +and +.BR poll (2) +.RE +.SS Filters +In order to cause only certain packets to be returned when reading +packets, a filter can be set on a handle. For a live capture, the +filtering will be performed in kernel mode, if possible, to avoid +copying ``uninteresting'' packets from the kernel to user mode. +.PP +A filter can be specified as a text string; the syntax and semantics of +the string are as described by +.BR pcap-filter (@MAN_MISC_INFO@). +A filter string is compiled into a program in a pseudo-machine-language +by +.BR pcap_compile () +and the resulting program can be made a filter for a handle with +.BR pcap_setfilter (). +The result of +.BR pcap_compile () +can be freed with a call to +.BR pcap_freecode (). +.BR pcap_compile () +may require a network mask for certain expressions in the filter string; +.BR pcap_lookupnet () +can be used to find the network address and network mask for a given +capture device. +.PP +A compiled filter can also be applied directly to a packet that has been +read using +.BR pcap_offline_filter (). +.TP +.B Routines +.RS +.TP +.BR pcap_compile (3PCAP) +compile filter expression to a pseudo-machine-language code program +.TP +.BR pcap_freecode (3PCAP) +free a filter program +.TP +.BR pcap_setfilter (3PCAP) +set filter for a +.B pcap_t +.TP +.BR pcap_lookupnet (3PCAP) +get network address and network mask for a capture device +.TP +.BR pcap_offline_filter (3PCAP) +apply a filter program to a packet +.RE +.SS Incoming and outgoing packets +By default, libpcap will attempt to capture both packets sent by the +machine and packets received by the machine. To limit it to capturing +only packets received by the machine or, if possible, only packets sent +by the machine, call +.BR pcap_setdirection (). +.TP +.BR Routines +.RS +.TP +.BR pcap_setdirection (3PCAP) +specify whether to capture incoming packets, outgoing packets, or both +.RE +.SS Capture statistics +To get statistics about packets received and dropped in a live capture, +call +.BR pcap_stats (). +.TP +.B Routines +.RS +.TP +.BR pcap_stats (3PCAP) +get capture statistics +.RE +.SS Opening a handle for writing captured packets +To open a ``savefile`` to which to write packets, given the pathname the +``savefile'' should have, call +.BR pcap_dump_open (). +To open a ``savefile`` to which to write packets, given the pathname the +``savefile'' should have, call +.BR pcap_dump_open (); +to set up a handle for a ``savefile'', given a +.B "FILE\ *" +referring to a file already opened for writing, call +.BR pcap_dump_fopen (). +They each return pointers to a +.BR pcap_dumper_t , +which is the handle used for writing packets to the ``savefile''. If it +succeeds, it will have created the file if it doesn't exist and +truncated the file if it does exist. +To close a +.BR pcap_dumper_t , +call +.BR pcap_dump_close (). +.TP +.B Routines +.RS +.TP +.BR pcap_dump_open (3PCAP) +open a +.B pcap_dumper_t +for a ``savefile``, given a pathname +.TP +.BR pcap_dump_fopen (3PCAP) +open a +.B pcap_dumper_t +for a ``savefile``, given a +.B "FILE\ *" +.TP +.BR pcap_dump_close (3PCAP) +close a +.B pcap_dumper_t +.TP +.BR pcap_dump_file (3PCAP) +get the +.B "FILE\ *" +for a +.B pcap_dumper_t +opened for a ``savefile'' +.RE +.SS Writing packets +To write a packet to a +.BR pcap_dumper_t , +call +.BR pcap_dump (). +Packets written with +.BR pcap_dump () +may be buffered, rather than being immediately written to the +``savefile''. Closing the +.B pcap_dumper_t +will cause all buffered-but-not-yet-written packets to be written to the +``savefile''. +To force all packets written to the +.BR pcap_dumper_t , +and not yet written to the ``savefile'' because they're buffered by the +.BR pcap_dumper_t , +to be written to the ``savefile'', without closing the +.BR pcap_dumper_t , +call +.BR pcap_dump_flush (). +.TP +.B Routines +.RS +.TP +.BR pcap_dump (3PCAP) +write packet to a +.B pcap_dumper_t +.TP +.BR pcap_dump_flush (3PCAP) +flush buffered packets written to a +.B pcap_dumper_t +to the ``savefile'' +.TP +.BR pcap_dump_ftell (3PCAP) +get current file position for a +.B pcap_dumper_t +.RE +.SS Injecting packets +If you have the required privileges, you can inject packets onto a +network with a +.B pcap_t +for a live capture, using +.BR pcap_inject () +or +.BR pcap_sendpacket (). +(The two routines exist for compatibility with both OpenBSD and WinPcap; +they perform the same function, but have different return values.) +.TP +.B Routines +.RS +.TP +.BR pcap_inject (3PCAP) +.PD 0 +.TP +.BR pcap_sendpacket (3PCAP) +transmit a packet +.PD +.RE +.SS Reporting errors +Some routines return error or warning status codes; to convert them to a +string, use +.BR pcap_statustostr (). +.TP +.B Routines +.RS +.TP +.BR pcap_statustostr (3PCAP) +get a string for an error or warning status code +.RE +.SS Getting library version information +To get a string giving version information about libpcap, call +.BR pcap_library_version (). +.TP +.B Routines +.RS +.TP +.BR pcap_library_version (3PCAP) +get library version string +.RE +.SH BACKWARDS COMPATIBILITY +.PP +In versions of libpcap prior to 1.0, the +.B pcap.h +header file was not in a +.B pcap +directory on most platforms; if you are writing an application that must +work on versions of libpcap prior to 1.0, include +.BR , +which will include +.B +for you, rather than including +.BR . +.PP +.BR pcap_create () +and +.BR pcap_activate () +were not available in versions of libpcap prior to 1.0; if you are +writing an application that must work on versions of libpcap prior to +1.0, either use +.BR pcap_open_live () +to get a handle for a live capture or, if you want to be able to use the +additional capabilities offered by using +.BR pcap_create () +and +.BR pcap_activate (), +use an +.BR autoconf (1) +script or some other configuration script to check whether the libpcap +1.0 APIs are available and use them only if they are. +.SH SEE ALSO +autoconf(1), tcpdump(1), tcpslice(1), pcap-filter(@MAN_MISC_INFO@), pfconfig(8), +usermod(1M) +.SH AUTHORS +The original authors of libpcap are: +.LP +Van Jacobson, +Craig Leres and +Steven McCanne, all of the +Lawrence Berkeley National Laboratory, University of California, Berkeley, CA. +.LP +The current version is available from "The Tcpdump Group"'s Web site at +.LP +.RS +.I http://www.tcpdump.org/ +.RE +.SH BUGS +Please send problems, bugs, questions, desirable enhancements, etc. to: +.LP +.RS +tcpdump-workers@lists.tcpdump.org +.RE diff --git a/pcap.c b/pcap.c new file mode 100644 index 0000000..cfdd83f --- /dev/null +++ b/pcap.c @@ -0,0 +1,1591 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997, 1998 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap.c,v 1.128 2008-12-23 20:13:29 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef WIN32 +#include +#else /* WIN32 */ +#if HAVE_INTTYPES_H +#include +#elif HAVE_STDINT_H +#include +#endif +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +#include +#endif /* WIN32 */ + +#include +#include +#include +#if !defined(_MSC_VER) && !defined(__BORLANDC__) && !defined(__MINGW32__) +#include +#endif +#include +#include + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +#ifdef MSDOS +#include "pcap-dos.h" +#endif + +#include "pcap-int.h" + +#ifdef HAVE_DAG_API +#include +#include +#endif + +int +pcap_not_initialized(pcap_t *pcap) +{ + /* this means 'not initialized' */ + return (PCAP_ERROR_NOT_ACTIVATED); +} + +/* + * Returns 1 if rfmon mode can be set on the pcap_t, 0 if it can't, + * a PCAP_ERROR value on an error. + */ +int +pcap_can_set_rfmon(pcap_t *p) +{ + return (p->can_set_rfmon_op(p)); +} + +/* + * For systems where rfmon mode is never supported. + */ +static int +pcap_cant_set_rfmon(pcap_t *p _U_) +{ + return (0); +} + +/* + * Sets *tstamp_typesp to point to an array 1 or more supported time stamp + * types; the return value is the number of supported time stamp types. + * The list should be freed by a call to pcap_free_tstamp_types() when + * you're done with it. + * + * A return value of 0 means "you don't get a choice of time stamp type", + * in which case *tstamp_typesp is set to null. + * + * PCAP_ERROR is returned on error. + */ +int +pcap_list_tstamp_types(pcap_t *p, int **tstamp_typesp) +{ + if (p->tstamp_type_count == 0) { + /* + * We don't support multiple time stamp types. + */ + *tstamp_typesp = NULL; + } else { + *tstamp_typesp = (int*)calloc(sizeof(**tstamp_typesp), + p->tstamp_type_count); + if (*tstamp_typesp == NULL) { + (void)snprintf(p->errbuf, sizeof(p->errbuf), + "malloc: %s", pcap_strerror(errno)); + return (PCAP_ERROR); + } + (void)memcpy(*tstamp_typesp, p->tstamp_type_list, + sizeof(**tstamp_typesp) * p->tstamp_type_count); + } + return (p->tstamp_type_count); +} + +/* + * In Windows, you might have a library built with one version of the + * C runtime library and an application built with another version of + * the C runtime library, which means that the library might use one + * version of malloc() and free() and the application might use another + * version of malloc() and free(). If so, that means something + * allocated by the library cannot be freed by the application, so we + * need to have a pcap_free_tstamp_types() routine to free up the list + * allocated by pcap_list_tstamp_types(), even though it's just a wrapper + * around free(). + */ +void +pcap_free_tstamp_types(int *tstamp_type_list) +{ + free(tstamp_type_list); +} + +/* + * Default one-shot callback; overridden for capture types where the + * packet data cannot be guaranteed to be available after the callback + * returns, so that a copy must be made. + */ +static void +pcap_oneshot(u_char *user, const struct pcap_pkthdr *h, const u_char *pkt) +{ + struct oneshot_userdata *sp = (struct oneshot_userdata *)user; + + *sp->hdr = *h; + *sp->pkt = pkt; +} + +const u_char * +pcap_next(pcap_t *p, struct pcap_pkthdr *h) +{ + struct oneshot_userdata s; + const u_char *pkt; + + s.hdr = h; + s.pkt = &pkt; + s.pd = p; + if (pcap_dispatch(p, 1, p->oneshot_callback, (u_char *)&s) <= 0) + return (0); + return (pkt); +} + +int +pcap_next_ex(pcap_t *p, struct pcap_pkthdr **pkt_header, + const u_char **pkt_data) +{ + struct oneshot_userdata s; + + s.hdr = &p->pcap_header; + s.pkt = pkt_data; + s.pd = p; + + /* Saves a pointer to the packet headers */ + *pkt_header= &p->pcap_header; + + if (p->sf.rfile != NULL) { + int status; + + /* We are on an offline capture */ + status = pcap_offline_read(p, 1, p->oneshot_callback, + (u_char *)&s); + + /* + * Return codes for pcap_offline_read() are: + * - 0: EOF + * - -1: error + * - >1: OK + * The first one ('0') conflicts with the return code of + * 0 from pcap_read() meaning "no packets arrived before + * the timeout expired", so we map it to -2 so you can + * distinguish between an EOF from a savefile and a + * "no packets arrived before the timeout expired, try + * again" from a live capture. + */ + if (status == 0) + return (-2); + else + return (status); + } + + /* + * Return codes for pcap_read() are: + * - 0: timeout + * - -1: error + * - -2: loop was broken out of with pcap_breakloop() + * - >1: OK + * The first one ('0') conflicts with the return code of 0 from + * pcap_offline_read() meaning "end of file". + */ + return (p->read_op(p, 1, p->oneshot_callback, (u_char *)&s)); +} + +static void +initialize_ops(pcap_t *p) +{ + /* + * Set operation pointers for operations that only work on + * an activated pcap_t to point to a routine that returns + * a "this isn't activated" error. + */ + p->read_op = (read_op_t)pcap_not_initialized; + p->inject_op = (inject_op_t)pcap_not_initialized; + p->setfilter_op = (setfilter_op_t)pcap_not_initialized; + p->setdirection_op = (setdirection_op_t)pcap_not_initialized; + p->set_datalink_op = (set_datalink_op_t)pcap_not_initialized; + p->getnonblock_op = (getnonblock_op_t)pcap_not_initialized; + p->setnonblock_op = (setnonblock_op_t)pcap_not_initialized; + p->stats_op = (stats_op_t)pcap_not_initialized; +#ifdef WIN32 + p->setbuff_op = (setbuff_op_t)pcap_not_initialized; + p->setmode_op = (setmode_op_t)pcap_not_initialized; + p->setmintocopy_op = (setmintocopy_op_t)pcap_not_initialized; +#endif + + /* + * Default cleanup operation - implementations can override + * this, but should call pcap_cleanup_live_common() after + * doing their own additional cleanup. + */ + p->cleanup_op = pcap_cleanup_live_common; + + /* + * In most cases, the standard one-short callback can + * be used for pcap_next()/pcap_next_ex(). + */ + p->oneshot_callback = pcap_oneshot; +} + +pcap_t * +pcap_create_common(const char *source, char *ebuf) +{ + pcap_t *p; + + p = malloc(sizeof(*p)); + if (p == NULL) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "malloc: %s", + pcap_strerror(errno)); + return (NULL); + } + memset(p, 0, sizeof(*p)); +#ifndef WIN32 + p->fd = -1; /* not opened yet */ + p->selectable_fd = -1; + p->send_fd = -1; +#endif + + p->opt.source = strdup(source); + if (p->opt.source == NULL) { + snprintf(ebuf, PCAP_ERRBUF_SIZE, "malloc: %s", + pcap_strerror(errno)); + free(p); + return (NULL); + } + + /* + * Default to "can't set rfmon mode"; if it's supported by + * a platform, the create routine that called us can set + * the op to its routine to check whether a particular + * device supports it. + */ + p->can_set_rfmon_op = pcap_cant_set_rfmon; + + initialize_ops(p); + + /* put in some defaults*/ + pcap_set_timeout(p, 0); + pcap_set_snaplen(p, 65535); /* max packet size */ + p->opt.promisc = 0; + p->opt.buffer_size = 0; + p->opt.tstamp_type = -1; /* default to not setting time stamp type */ + return (p); +} + +int +pcap_check_activated(pcap_t *p) +{ + if (p->activated) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "can't perform " + " operation on activated capture"); + return (-1); + } + return (0); +} + +int +pcap_set_snaplen(pcap_t *p, int snaplen) +{ + if (pcap_check_activated(p)) + return (PCAP_ERROR_ACTIVATED); + p->snapshot = snaplen; + return (0); +} + +int +pcap_set_promisc(pcap_t *p, int promisc) +{ + if (pcap_check_activated(p)) + return (PCAP_ERROR_ACTIVATED); + p->opt.promisc = promisc; + return (0); +} + +int +pcap_set_rfmon(pcap_t *p, int rfmon) +{ + if (pcap_check_activated(p)) + return (PCAP_ERROR_ACTIVATED); + p->opt.rfmon = rfmon; + return (0); +} + +int +pcap_set_timeout(pcap_t *p, int timeout_ms) +{ + if (pcap_check_activated(p)) + return (PCAP_ERROR_ACTIVATED); + p->md.timeout = timeout_ms; + return (0); +} + +int +pcap_set_tstamp_type(pcap_t *p, int tstamp_type) +{ + int i; + + if (pcap_check_activated(p)) + return (PCAP_ERROR_ACTIVATED); + + /* + * If p->tstamp_type_count is 0, we don't support setting + * the time stamp type at all. + */ + if (p->tstamp_type_count == 0) + return (PCAP_ERROR_CANTSET_TSTAMP_TYPE); + + /* + * Check whether we claim to support this type of time stamp. + */ + for (i = 0; i < p->tstamp_type_count; i++) { + if (p->tstamp_type_list[i] == tstamp_type) { + /* + * Yes. + */ + p->opt.tstamp_type = tstamp_type; + return (0); + } + } + + /* + * No. We support setting the time stamp type, but not to this + * particular value. + */ + return (PCAP_WARNING_TSTAMP_TYPE_NOTSUP); +} + +int +pcap_set_buffer_size(pcap_t *p, int buffer_size) +{ + if (pcap_check_activated(p)) + return (PCAP_ERROR_ACTIVATED); + p->opt.buffer_size = buffer_size; + return (0); +} + +int +pcap_activate(pcap_t *p) +{ + int status; + + /* + * Catch attempts to re-activate an already-activated + * pcap_t; this should, for example, catch code that + * calls pcap_open_live() followed by pcap_activate(), + * as some code that showed up in a Stack Exchange + * question did. + */ + if (pcap_check_activated(p)) + return (PCAP_ERROR_ACTIVATED); + status = p->activate_op(p); + if (status >= 0) + p->activated = 1; + else { + if (p->errbuf[0] == '\0') { + /* + * No error message supplied by the activate routine; + * for the benefit of programs that don't specially + * handle errors other than PCAP_ERROR, return the + * error message corresponding to the status. + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "%s", + pcap_statustostr(status)); + } + + /* + * Undo any operation pointer setting, etc. done by + * the activate operation. + */ + initialize_ops(p); + } + return (status); +} + +pcap_t * +pcap_open_live(const char *source, int snaplen, int promisc, int to_ms, char *errbuf) +{ + pcap_t *p; + int status; + + p = pcap_create(source, errbuf); + if (p == NULL) + return (NULL); + status = pcap_set_snaplen(p, snaplen); + if (status < 0) + goto fail; + status = pcap_set_promisc(p, promisc); + if (status < 0) + goto fail; + status = pcap_set_timeout(p, to_ms); + if (status < 0) + goto fail; + /* + * Mark this as opened with pcap_open_live(), so that, for + * example, we show the full list of DLT_ values, rather + * than just the ones that are compatible with capturing + * when not in monitor mode. That allows existing applications + * to work the way they used to work, but allows new applications + * that know about the new open API to, for example, find out the + * DLT_ values that they can select without changing whether + * the adapter is in monitor mode or not. + */ + p->oldstyle = 1; + status = pcap_activate(p); + if (status < 0) + goto fail; + return (p); +fail: + if (status == PCAP_ERROR) + snprintf(errbuf, PCAP_ERRBUF_SIZE, "%s: %s", source, + p->errbuf); + else if (status == PCAP_ERROR_NO_SUCH_DEVICE || + status == PCAP_ERROR_PERM_DENIED || + status == PCAP_ERROR_PROMISC_PERM_DENIED) + snprintf(errbuf, PCAP_ERRBUF_SIZE, "%s: %s (%s)", source, + pcap_statustostr(status), p->errbuf); + else + snprintf(errbuf, PCAP_ERRBUF_SIZE, "%s: %s", source, + pcap_statustostr(status)); + pcap_close(p); + return (NULL); +} + +int +pcap_dispatch(pcap_t *p, int cnt, pcap_handler callback, u_char *user) +{ + return (p->read_op(p, cnt, callback, user)); +} + +/* + * XXX - is this necessary? + */ +int +pcap_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user) +{ + + return (p->read_op(p, cnt, callback, user)); +} + +int +pcap_loop(pcap_t *p, int cnt, pcap_handler callback, u_char *user) +{ + register int n; + + for (;;) { + if (p->sf.rfile != NULL) { + /* + * 0 means EOF, so don't loop if we get 0. + */ + n = pcap_offline_read(p, cnt, callback, user); + } else { + /* + * XXX keep reading until we get something + * (or an error occurs) + */ + do { + n = p->read_op(p, cnt, callback, user); + } while (n == 0); + } + if (n <= 0) + return (n); + if (cnt > 0) { + cnt -= n; + if (cnt <= 0) + return (0); + } + } +} + +/* + * Force the loop in "pcap_read()" or "pcap_read_offline()" to terminate. + */ +void +pcap_breakloop(pcap_t *p) +{ + p->break_loop = 1; +} + +int +pcap_datalink(pcap_t *p) +{ + return (p->linktype); +} + +int +pcap_datalink_ext(pcap_t *p) +{ + return (p->linktype_ext); +} + +int +pcap_list_datalinks(pcap_t *p, int **dlt_buffer) +{ + if (p->dlt_count == 0) { + /* + * We couldn't fetch the list of DLTs, which means + * this platform doesn't support changing the + * DLT for an interface. Return a list of DLTs + * containing only the DLT this device supports. + */ + *dlt_buffer = (int*)malloc(sizeof(**dlt_buffer)); + if (*dlt_buffer == NULL) { + (void)snprintf(p->errbuf, sizeof(p->errbuf), + "malloc: %s", pcap_strerror(errno)); + return (-1); + } + **dlt_buffer = p->linktype; + return (1); + } else { + *dlt_buffer = (int*)calloc(sizeof(**dlt_buffer), p->dlt_count); + if (*dlt_buffer == NULL) { + (void)snprintf(p->errbuf, sizeof(p->errbuf), + "malloc: %s", pcap_strerror(errno)); + return (-1); + } + (void)memcpy(*dlt_buffer, p->dlt_list, + sizeof(**dlt_buffer) * p->dlt_count); + return (p->dlt_count); + } +} + +/* + * In Windows, you might have a library built with one version of the + * C runtime library and an application built with another version of + * the C runtime library, which means that the library might use one + * version of malloc() and free() and the application might use another + * version of malloc() and free(). If so, that means something + * allocated by the library cannot be freed by the application, so we + * need to have a pcap_free_datalinks() routine to free up the list + * allocated by pcap_list_datalinks(), even though it's just a wrapper + * around free(). + */ +void +pcap_free_datalinks(int *dlt_list) +{ + free(dlt_list); +} + +int +pcap_set_datalink(pcap_t *p, int dlt) +{ + int i; + const char *dlt_name; + + if (p->dlt_count == 0 || p->set_datalink_op == NULL) { + /* + * We couldn't fetch the list of DLTs, or we don't + * have a "set datalink" operation, which means + * this platform doesn't support changing the + * DLT for an interface. Check whether the new + * DLT is the one this interface supports. + */ + if (p->linktype != dlt) + goto unsupported; + + /* + * It is, so there's nothing we need to do here. + */ + return (0); + } + for (i = 0; i < p->dlt_count; i++) + if (p->dlt_list[i] == dlt) + break; + if (i >= p->dlt_count) + goto unsupported; + if (p->dlt_count == 2 && p->dlt_list[0] == DLT_EN10MB && + dlt == DLT_DOCSIS) { + /* + * This is presumably an Ethernet device, as the first + * link-layer type it offers is DLT_EN10MB, and the only + * other type it offers is DLT_DOCSIS. That means that + * we can't tell the driver to supply DOCSIS link-layer + * headers - we're just pretending that's what we're + * getting, as, presumably, we're capturing on a dedicated + * link to a Cisco Cable Modem Termination System, and + * it's putting raw DOCSIS frames on the wire inside low-level + * Ethernet framing. + */ + p->linktype = dlt; + return (0); + } + if (p->set_datalink_op(p, dlt) == -1) + return (-1); + p->linktype = dlt; + return (0); + +unsupported: + dlt_name = pcap_datalink_val_to_name(dlt); + if (dlt_name != NULL) { + (void) snprintf(p->errbuf, sizeof(p->errbuf), + "%s is not one of the DLTs supported by this device", + dlt_name); + } else { + (void) snprintf(p->errbuf, sizeof(p->errbuf), + "DLT %d is not one of the DLTs supported by this device", + dlt); + } + return (-1); +} + +/* + * This array is designed for mapping upper and lower case letter + * together for a case independent comparison. The mappings are + * based upon ascii character sequences. + */ +static const u_char charmap[] = { + (u_char)'\000', (u_char)'\001', (u_char)'\002', (u_char)'\003', + (u_char)'\004', (u_char)'\005', (u_char)'\006', (u_char)'\007', + (u_char)'\010', (u_char)'\011', (u_char)'\012', (u_char)'\013', + (u_char)'\014', (u_char)'\015', (u_char)'\016', (u_char)'\017', + (u_char)'\020', (u_char)'\021', (u_char)'\022', (u_char)'\023', + (u_char)'\024', (u_char)'\025', (u_char)'\026', (u_char)'\027', + (u_char)'\030', (u_char)'\031', (u_char)'\032', (u_char)'\033', + (u_char)'\034', (u_char)'\035', (u_char)'\036', (u_char)'\037', + (u_char)'\040', (u_char)'\041', (u_char)'\042', (u_char)'\043', + (u_char)'\044', (u_char)'\045', (u_char)'\046', (u_char)'\047', + (u_char)'\050', (u_char)'\051', (u_char)'\052', (u_char)'\053', + (u_char)'\054', (u_char)'\055', (u_char)'\056', (u_char)'\057', + (u_char)'\060', (u_char)'\061', (u_char)'\062', (u_char)'\063', + (u_char)'\064', (u_char)'\065', (u_char)'\066', (u_char)'\067', + (u_char)'\070', (u_char)'\071', (u_char)'\072', (u_char)'\073', + (u_char)'\074', (u_char)'\075', (u_char)'\076', (u_char)'\077', + (u_char)'\100', (u_char)'\141', (u_char)'\142', (u_char)'\143', + (u_char)'\144', (u_char)'\145', (u_char)'\146', (u_char)'\147', + (u_char)'\150', (u_char)'\151', (u_char)'\152', (u_char)'\153', + (u_char)'\154', (u_char)'\155', (u_char)'\156', (u_char)'\157', + (u_char)'\160', (u_char)'\161', (u_char)'\162', (u_char)'\163', + (u_char)'\164', (u_char)'\165', (u_char)'\166', (u_char)'\167', + (u_char)'\170', (u_char)'\171', (u_char)'\172', (u_char)'\133', + (u_char)'\134', (u_char)'\135', (u_char)'\136', (u_char)'\137', + (u_char)'\140', (u_char)'\141', (u_char)'\142', (u_char)'\143', + (u_char)'\144', (u_char)'\145', (u_char)'\146', (u_char)'\147', + (u_char)'\150', (u_char)'\151', (u_char)'\152', (u_char)'\153', + (u_char)'\154', (u_char)'\155', (u_char)'\156', (u_char)'\157', + (u_char)'\160', (u_char)'\161', (u_char)'\162', (u_char)'\163', + (u_char)'\164', (u_char)'\165', (u_char)'\166', (u_char)'\167', + (u_char)'\170', (u_char)'\171', (u_char)'\172', (u_char)'\173', + (u_char)'\174', (u_char)'\175', (u_char)'\176', (u_char)'\177', + (u_char)'\200', (u_char)'\201', (u_char)'\202', (u_char)'\203', + (u_char)'\204', (u_char)'\205', (u_char)'\206', (u_char)'\207', + (u_char)'\210', (u_char)'\211', (u_char)'\212', (u_char)'\213', + (u_char)'\214', (u_char)'\215', (u_char)'\216', (u_char)'\217', + (u_char)'\220', (u_char)'\221', (u_char)'\222', (u_char)'\223', + (u_char)'\224', (u_char)'\225', (u_char)'\226', (u_char)'\227', + (u_char)'\230', (u_char)'\231', (u_char)'\232', (u_char)'\233', + (u_char)'\234', (u_char)'\235', (u_char)'\236', (u_char)'\237', + (u_char)'\240', (u_char)'\241', (u_char)'\242', (u_char)'\243', + (u_char)'\244', (u_char)'\245', (u_char)'\246', (u_char)'\247', + (u_char)'\250', (u_char)'\251', (u_char)'\252', (u_char)'\253', + (u_char)'\254', (u_char)'\255', (u_char)'\256', (u_char)'\257', + (u_char)'\260', (u_char)'\261', (u_char)'\262', (u_char)'\263', + (u_char)'\264', (u_char)'\265', (u_char)'\266', (u_char)'\267', + (u_char)'\270', (u_char)'\271', (u_char)'\272', (u_char)'\273', + (u_char)'\274', (u_char)'\275', (u_char)'\276', (u_char)'\277', + (u_char)'\300', (u_char)'\341', (u_char)'\342', (u_char)'\343', + (u_char)'\344', (u_char)'\345', (u_char)'\346', (u_char)'\347', + (u_char)'\350', (u_char)'\351', (u_char)'\352', (u_char)'\353', + (u_char)'\354', (u_char)'\355', (u_char)'\356', (u_char)'\357', + (u_char)'\360', (u_char)'\361', (u_char)'\362', (u_char)'\363', + (u_char)'\364', (u_char)'\365', (u_char)'\366', (u_char)'\367', + (u_char)'\370', (u_char)'\371', (u_char)'\372', (u_char)'\333', + (u_char)'\334', (u_char)'\335', (u_char)'\336', (u_char)'\337', + (u_char)'\340', (u_char)'\341', (u_char)'\342', (u_char)'\343', + (u_char)'\344', (u_char)'\345', (u_char)'\346', (u_char)'\347', + (u_char)'\350', (u_char)'\351', (u_char)'\352', (u_char)'\353', + (u_char)'\354', (u_char)'\355', (u_char)'\356', (u_char)'\357', + (u_char)'\360', (u_char)'\361', (u_char)'\362', (u_char)'\363', + (u_char)'\364', (u_char)'\365', (u_char)'\366', (u_char)'\367', + (u_char)'\370', (u_char)'\371', (u_char)'\372', (u_char)'\373', + (u_char)'\374', (u_char)'\375', (u_char)'\376', (u_char)'\377', +}; + +int +pcap_strcasecmp(const char *s1, const char *s2) +{ + register const u_char *cm = charmap, + *us1 = (const u_char *)s1, + *us2 = (const u_char *)s2; + + while (cm[*us1] == cm[*us2++]) + if (*us1++ == '\0') + return(0); + return (cm[*us1] - cm[*--us2]); +} + +struct dlt_choice { + const char *name; + const char *description; + int dlt; +}; + +#define DLT_CHOICE(code, description) { #code, description, code } +#define DLT_CHOICE_SENTINEL { NULL, NULL, 0 } + +static struct dlt_choice dlt_choices[] = { + DLT_CHOICE(DLT_NULL, "BSD loopback"), + DLT_CHOICE(DLT_EN10MB, "Ethernet"), + DLT_CHOICE(DLT_IEEE802, "Token ring"), + DLT_CHOICE(DLT_ARCNET, "BSD ARCNET"), + DLT_CHOICE(DLT_SLIP, "SLIP"), + DLT_CHOICE(DLT_PPP, "PPP"), + DLT_CHOICE(DLT_FDDI, "FDDI"), + DLT_CHOICE(DLT_ATM_RFC1483, "RFC 1483 LLC-encapsulated ATM"), + DLT_CHOICE(DLT_RAW, "Raw IP"), + DLT_CHOICE(DLT_SLIP_BSDOS, "BSD/OS SLIP"), + DLT_CHOICE(DLT_PPP_BSDOS, "BSD/OS PPP"), + DLT_CHOICE(DLT_ATM_CLIP, "Linux Classical IP-over-ATM"), + DLT_CHOICE(DLT_PPP_SERIAL, "PPP over serial"), + DLT_CHOICE(DLT_PPP_ETHER, "PPPoE"), + DLT_CHOICE(DLT_SYMANTEC_FIREWALL, "Symantec Firewall"), + DLT_CHOICE(DLT_C_HDLC, "Cisco HDLC"), + DLT_CHOICE(DLT_IEEE802_11, "802.11"), + DLT_CHOICE(DLT_FRELAY, "Frame Relay"), + DLT_CHOICE(DLT_LOOP, "OpenBSD loopback"), + DLT_CHOICE(DLT_ENC, "OpenBSD encapsulated IP"), + DLT_CHOICE(DLT_LINUX_SLL, "Linux cooked"), + DLT_CHOICE(DLT_LTALK, "Localtalk"), + DLT_CHOICE(DLT_PFLOG, "OpenBSD pflog file"), + DLT_CHOICE(DLT_PFSYNC, "Packet filter state syncing"), + DLT_CHOICE(DLT_PRISM_HEADER, "802.11 plus Prism header"), + DLT_CHOICE(DLT_IP_OVER_FC, "RFC 2625 IP-over-Fibre Channel"), + DLT_CHOICE(DLT_SUNATM, "Sun raw ATM"), + DLT_CHOICE(DLT_IEEE802_11_RADIO, "802.11 plus radiotap header"), + DLT_CHOICE(DLT_ARCNET_LINUX, "Linux ARCNET"), + DLT_CHOICE(DLT_JUNIPER_MLPPP, "Juniper Multi-Link PPP"), + DLT_CHOICE(DLT_JUNIPER_MLFR, "Juniper Multi-Link Frame Relay"), + DLT_CHOICE(DLT_JUNIPER_ES, "Juniper Encryption Services PIC"), + DLT_CHOICE(DLT_JUNIPER_GGSN, "Juniper GGSN PIC"), + DLT_CHOICE(DLT_JUNIPER_MFR, "Juniper FRF.16 Frame Relay"), + DLT_CHOICE(DLT_JUNIPER_ATM2, "Juniper ATM2 PIC"), + DLT_CHOICE(DLT_JUNIPER_SERVICES, "Juniper Advanced Services PIC"), + DLT_CHOICE(DLT_JUNIPER_ATM1, "Juniper ATM1 PIC"), + DLT_CHOICE(DLT_APPLE_IP_OVER_IEEE1394, "Apple IP-over-IEEE 1394"), + DLT_CHOICE(DLT_MTP2_WITH_PHDR, "SS7 MTP2 with Pseudo-header"), + DLT_CHOICE(DLT_MTP2, "SS7 MTP2"), + DLT_CHOICE(DLT_MTP3, "SS7 MTP3"), + DLT_CHOICE(DLT_SCCP, "SS7 SCCP"), + DLT_CHOICE(DLT_DOCSIS, "DOCSIS"), + DLT_CHOICE(DLT_LINUX_IRDA, "Linux IrDA"), + DLT_CHOICE(DLT_IEEE802_11_RADIO_AVS, "802.11 plus AVS radio information header"), + DLT_CHOICE(DLT_JUNIPER_MONITOR, "Juniper Passive Monitor PIC"), + DLT_CHOICE(DLT_PPP_PPPD, "PPP for pppd, with direction flag"), + DLT_CHOICE(DLT_JUNIPER_PPPOE, "Juniper PPPoE"), + DLT_CHOICE(DLT_JUNIPER_PPPOE_ATM, "Juniper PPPoE/ATM"), + DLT_CHOICE(DLT_GPRS_LLC, "GPRS LLC"), + DLT_CHOICE(DLT_GPF_T, "GPF-T"), + DLT_CHOICE(DLT_GPF_F, "GPF-F"), + DLT_CHOICE(DLT_JUNIPER_PIC_PEER, "Juniper PIC Peer"), + DLT_CHOICE(DLT_ERF_ETH, "Ethernet with Endace ERF header"), + DLT_CHOICE(DLT_ERF_POS, "Packet-over-SONET with Endace ERF header"), + DLT_CHOICE(DLT_LINUX_LAPD, "Linux vISDN LAPD"), + DLT_CHOICE(DLT_JUNIPER_ETHER, "Juniper Ethernet"), + DLT_CHOICE(DLT_JUNIPER_PPP, "Juniper PPP"), + DLT_CHOICE(DLT_JUNIPER_FRELAY, "Juniper Frame Relay"), + DLT_CHOICE(DLT_JUNIPER_CHDLC, "Juniper C-HDLC"), + DLT_CHOICE(DLT_MFR, "FRF.16 Frame Relay"), + DLT_CHOICE(DLT_JUNIPER_VP, "Juniper Voice PIC"), + DLT_CHOICE(DLT_A429, "Arinc 429"), + DLT_CHOICE(DLT_A653_ICM, "Arinc 653 Interpartition Communication"), + DLT_CHOICE(DLT_USB, "USB"), + DLT_CHOICE(DLT_BLUETOOTH_HCI_H4, "Bluetooth HCI UART transport layer"), + DLT_CHOICE(DLT_IEEE802_16_MAC_CPS, "IEEE 802.16 MAC Common Part Sublayer"), + DLT_CHOICE(DLT_USB_LINUX, "USB with Linux header"), + DLT_CHOICE(DLT_CAN20B, "Controller Area Network (CAN) v. 2.0B"), + DLT_CHOICE(DLT_IEEE802_15_4_LINUX, "IEEE 802.15.4 with Linux padding"), + DLT_CHOICE(DLT_PPI, "Per-Packet Information"), + DLT_CHOICE(DLT_IEEE802_16_MAC_CPS_RADIO, "IEEE 802.16 MAC Common Part Sublayer plus radiotap header"), + DLT_CHOICE(DLT_JUNIPER_ISM, "Juniper Integrated Service Module"), + DLT_CHOICE(DLT_IEEE802_15_4, "IEEE 802.15.4 with FCS"), + DLT_CHOICE(DLT_SITA, "SITA pseudo-header"), + DLT_CHOICE(DLT_ERF, "Endace ERF header"), + DLT_CHOICE(DLT_RAIF1, "Ethernet with u10 Networks pseudo-header"), + DLT_CHOICE(DLT_IPMB, "IPMB"), + DLT_CHOICE(DLT_JUNIPER_ST, "Juniper Secure Tunnel"), + DLT_CHOICE(DLT_BLUETOOTH_HCI_H4_WITH_PHDR, "Bluetooth HCI UART transport layer plus pseudo-header"), + DLT_CHOICE(DLT_AX25_KISS, "AX.25 with KISS header"), + DLT_CHOICE(DLT_IEEE802_15_4_NONASK_PHY, "IEEE 802.15.4 with non-ASK PHY data"), + DLT_CHOICE(DLT_MPLS, "MPLS with label as link-layer header"), + DLT_CHOICE(DLT_USB_LINUX_MMAPPED, "USB with padded Linux header"), + DLT_CHOICE(DLT_DECT, "DECT"), + DLT_CHOICE(DLT_AOS, "AOS Space Data Link protocol"), + DLT_CHOICE(DLT_WIHART, "Wireless HART"), + DLT_CHOICE(DLT_FC_2, "Fibre Channel FC-2"), + DLT_CHOICE(DLT_FC_2_WITH_FRAME_DELIMS, "Fibre Channel FC-2 with frame delimiters"), + DLT_CHOICE(DLT_IPNET, "Solaris ipnet"), + DLT_CHOICE(DLT_CAN_SOCKETCAN, "CAN-bus with SocketCAN headers"), + DLT_CHOICE(DLT_IPV4, "Raw IPv4"), + DLT_CHOICE(DLT_IPV6, "Raw IPv6"), + DLT_CHOICE(DLT_IEEE802_15_4_NOFCS, "IEEE 802.15.4 without FCS"), + DLT_CHOICE(DLT_JUNIPER_VS, "Juniper Virtual Server"), + DLT_CHOICE(DLT_JUNIPER_SRX_E2E, "Juniper SRX E2E"), + DLT_CHOICE(DLT_JUNIPER_FIBRECHANNEL, "Juniper Fibre Channel"), + DLT_CHOICE(DLT_DVB_CI, "DVB-CI"), + DLT_CHOICE(DLT_JUNIPER_ATM_CEMIC, "Juniper ATM CEMIC"), + DLT_CHOICE(DLT_NFLOG, "Linux netfilter log messages"), + DLT_CHOICE(DLT_NETANALYZER, "Ethernet with Hilscher netANALYZER pseudo-header"), + DLT_CHOICE(DLT_NETANALYZER_TRANSPARENT, "Ethernet with Hilscher netANALYZER pseudo-header and with preamble and SFD"), + DLT_CHOICE(DLT_IPOIB, "RFC 4391 IP-over-Infiniband"), + DLT_CHOICE_SENTINEL +}; + +int +pcap_datalink_name_to_val(const char *name) +{ + int i; + + for (i = 0; dlt_choices[i].name != NULL; i++) { + if (pcap_strcasecmp(dlt_choices[i].name + sizeof("DLT_") - 1, + name) == 0) + return (dlt_choices[i].dlt); + } + return (-1); +} + +const char * +pcap_datalink_val_to_name(int dlt) +{ + int i; + + for (i = 0; dlt_choices[i].name != NULL; i++) { + if (dlt_choices[i].dlt == dlt) + return (dlt_choices[i].name + sizeof("DLT_") - 1); + } + return (NULL); +} + +const char * +pcap_datalink_val_to_description(int dlt) +{ + int i; + + for (i = 0; dlt_choices[i].name != NULL; i++) { + if (dlt_choices[i].dlt == dlt) + return (dlt_choices[i].description); + } + return (NULL); +} + +struct tstamp_type_choice { + const char *name; + const char *description; + int type; +}; + +static struct tstamp_type_choice tstamp_type_choices[] = { + { "host", "Host", PCAP_TSTAMP_HOST }, + { "host_lowprec", "Host, low precision", PCAP_TSTAMP_HOST_LOWPREC }, + { "host_hiprec", "Host, high precision", PCAP_TSTAMP_HOST_HIPREC }, + { "adapter", "Adapter", PCAP_TSTAMP_ADAPTER }, + { "adapter_unsynced", "Adapter, not synced with system time", PCAP_TSTAMP_ADAPTER_UNSYNCED }, + { NULL, NULL, 0 } +}; + +int +pcap_tstamp_type_name_to_val(const char *name) +{ + int i; + + for (i = 0; tstamp_type_choices[i].name != NULL; i++) { + if (pcap_strcasecmp(tstamp_type_choices[i].name, name) == 0) + return (tstamp_type_choices[i].type); + } + return (PCAP_ERROR); +} + +const char * +pcap_tstamp_type_val_to_name(int tstamp_type) +{ + int i; + + for (i = 0; tstamp_type_choices[i].name != NULL; i++) { + if (tstamp_type_choices[i].type == tstamp_type) + return (tstamp_type_choices[i].name); + } + return (NULL); +} + +const char * +pcap_tstamp_type_val_to_description(int tstamp_type) +{ + int i; + + for (i = 0; tstamp_type_choices[i].name != NULL; i++) { + if (tstamp_type_choices[i].type == tstamp_type) + return (tstamp_type_choices[i].description); + } + return (NULL); +} + +int +pcap_snapshot(pcap_t *p) +{ + return (p->snapshot); +} + +int +pcap_is_swapped(pcap_t *p) +{ + return (p->sf.swapped); +} + +int +pcap_major_version(pcap_t *p) +{ + return (p->sf.version_major); +} + +int +pcap_minor_version(pcap_t *p) +{ + return (p->sf.version_minor); +} + +FILE * +pcap_file(pcap_t *p) +{ + return (p->sf.rfile); +} + +int +pcap_fileno(pcap_t *p) +{ +#ifndef WIN32 + return (p->fd); +#else + if (p->adapter != NULL) + return ((int)(DWORD)p->adapter->hFile); + else + return (-1); +#endif +} + +#if !defined(WIN32) && !defined(MSDOS) +int +pcap_get_selectable_fd(pcap_t *p) +{ + return (p->selectable_fd); +} +#endif + +void +pcap_perror(pcap_t *p, char *prefix) +{ + fprintf(stderr, "%s: %s\n", prefix, p->errbuf); +} + +char * +pcap_geterr(pcap_t *p) +{ + return (p->errbuf); +} + +int +pcap_getnonblock(pcap_t *p, char *errbuf) +{ + return (p->getnonblock_op(p, errbuf)); +} + +/* + * Get the current non-blocking mode setting, under the assumption that + * it's just the standard POSIX non-blocking flag. + * + * We don't look at "p->nonblock", in case somebody tweaked the FD + * directly. + */ +#if !defined(WIN32) && !defined(MSDOS) +int +pcap_getnonblock_fd(pcap_t *p, char *errbuf) +{ + int fdflags; + + fdflags = fcntl(p->fd, F_GETFL, 0); + if (fdflags == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "F_GETFL: %s", + pcap_strerror(errno)); + return (-1); + } + if (fdflags & O_NONBLOCK) + return (1); + else + return (0); +} +#endif + +int +pcap_setnonblock(pcap_t *p, int nonblock, char *errbuf) +{ + return (p->setnonblock_op(p, nonblock, errbuf)); +} + +#if !defined(WIN32) && !defined(MSDOS) +/* + * Set non-blocking mode, under the assumption that it's just the + * standard POSIX non-blocking flag. (This can be called by the + * per-platform non-blocking-mode routine if that routine also + * needs to do some additional work.) + */ +int +pcap_setnonblock_fd(pcap_t *p, int nonblock, char *errbuf) +{ + int fdflags; + + fdflags = fcntl(p->fd, F_GETFL, 0); + if (fdflags == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "F_GETFL: %s", + pcap_strerror(errno)); + return (-1); + } + if (nonblock) + fdflags |= O_NONBLOCK; + else + fdflags &= ~O_NONBLOCK; + if (fcntl(p->fd, F_SETFL, fdflags) == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "F_SETFL: %s", + pcap_strerror(errno)); + return (-1); + } + return (0); +} +#endif + +#ifdef WIN32 +/* + * Generate a string for the last Win32-specific error (i.e. an error generated when + * calling a Win32 API). + * For errors occurred during standard C calls, we still use pcap_strerror() + */ +char * +pcap_win32strerror(void) +{ + DWORD error; + static char errbuf[PCAP_ERRBUF_SIZE+1]; + int errlen; + char *p; + + error = GetLastError(); + FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, error, 0, errbuf, + PCAP_ERRBUF_SIZE, NULL); + + /* + * "FormatMessage()" "helpfully" sticks CR/LF at the end of the + * message. Get rid of it. + */ + errlen = strlen(errbuf); + if (errlen >= 2) { + errbuf[errlen - 1] = '\0'; + errbuf[errlen - 2] = '\0'; + } + p = strchr(errbuf, '\0'); + snprintf (p, sizeof(errbuf)-(p-errbuf), " (%lu)", error); + return (errbuf); +} +#endif + +/* + * Generate error strings for PCAP_ERROR_ and PCAP_WARNING_ values. + */ +const char * +pcap_statustostr(int errnum) +{ + static char ebuf[15+10+1]; + + switch (errnum) { + + case PCAP_WARNING: + return("Generic warning"); + + case PCAP_WARNING_TSTAMP_TYPE_NOTSUP: + return ("That type of time stamp is not supported by that device"); + + case PCAP_WARNING_PROMISC_NOTSUP: + return ("That device doesn't support promiscuous mode"); + + case PCAP_ERROR: + return("Generic error"); + + case PCAP_ERROR_BREAK: + return("Loop terminated by pcap_breakloop"); + + case PCAP_ERROR_NOT_ACTIVATED: + return("The pcap_t has not been activated"); + + case PCAP_ERROR_ACTIVATED: + return ("The setting can't be changed after the pcap_t is activated"); + + case PCAP_ERROR_NO_SUCH_DEVICE: + return ("No such device exists"); + + case PCAP_ERROR_RFMON_NOTSUP: + return ("That device doesn't support monitor mode"); + + case PCAP_ERROR_NOT_RFMON: + return ("That operation is supported only in monitor mode"); + + case PCAP_ERROR_PERM_DENIED: + return ("You don't have permission to capture on that device"); + + case PCAP_ERROR_IFACE_NOT_UP: + return ("That device is not up"); + + case PCAP_ERROR_CANTSET_TSTAMP_TYPE: + return ("That device doesn't support setting the time stamp type"); + + case PCAP_ERROR_PROMISC_PERM_DENIED: + return ("You don't have permission to capture in promiscuous mode on that device"); + } + (void)snprintf(ebuf, sizeof ebuf, "Unknown error: %d", errnum); + return(ebuf); +} + +/* + * Not all systems have strerror(). + */ +const char * +pcap_strerror(int errnum) +{ +#ifdef HAVE_STRERROR + return (strerror(errnum)); +#else + extern int sys_nerr; + extern const char *const sys_errlist[]; + static char ebuf[15+10+1]; + + if ((unsigned int)errnum < sys_nerr) + return ((char *)sys_errlist[errnum]); + (void)snprintf(ebuf, sizeof ebuf, "Unknown error: %d", errnum); + return(ebuf); +#endif +} + +int +pcap_setfilter(pcap_t *p, struct bpf_program *fp) +{ + return (p->setfilter_op(p, fp)); +} + +/* + * Set direction flag, which controls whether we accept only incoming + * packets, only outgoing packets, or both. + * Note that, depending on the platform, some or all direction arguments + * might not be supported. + */ +int +pcap_setdirection(pcap_t *p, pcap_direction_t d) +{ + if (p->setdirection_op == NULL) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "Setting direction is not implemented on this platform"); + return (-1); + } else + return (p->setdirection_op(p, d)); +} + +int +pcap_stats(pcap_t *p, struct pcap_stat *ps) +{ + return (p->stats_op(p, ps)); +} + +static int +pcap_stats_dead(pcap_t *p, struct pcap_stat *ps _U_) +{ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "Statistics aren't available from a pcap_open_dead pcap_t"); + return (-1); +} + +#ifdef WIN32 +int +pcap_setbuff(pcap_t *p, int dim) +{ + return (p->setbuff_op(p, dim)); +} + +static int +pcap_setbuff_dead(pcap_t *p, int dim) +{ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "The kernel buffer size cannot be set on a pcap_open_dead pcap_t"); + return (-1); +} + +int +pcap_setmode(pcap_t *p, int mode) +{ + return (p->setmode_op(p, mode)); +} + +static int +pcap_setmode_dead(pcap_t *p, int mode) +{ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "impossible to set mode on a pcap_open_dead pcap_t"); + return (-1); +} + +int +pcap_setmintocopy(pcap_t *p, int size) +{ + return (p->setmintocopy_op(p, size)); +} + +static int +pcap_setmintocopy_dead(pcap_t *p, int size) +{ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "The mintocopy parameter cannot be set on a pcap_open_dead pcap_t"); + return (-1); +} +#endif + +/* + * On some platforms, we need to clean up promiscuous or monitor mode + * when we close a device - and we want that to happen even if the + * application just exits without explicitl closing devices. + * On those platforms, we need to register a "close all the pcaps" + * routine to be called when we exit, and need to maintain a list of + * pcaps that need to be closed to clean up modes. + * + * XXX - not thread-safe. + */ + +/* + * List of pcaps on which we've done something that needs to be + * cleaned up. + * If there are any such pcaps, we arrange to call "pcap_close_all()" + * when we exit, and have it close all of them. + */ +static struct pcap *pcaps_to_close; + +/* + * TRUE if we've already called "atexit()" to cause "pcap_close_all()" to + * be called on exit. + */ +static int did_atexit; + +static void +pcap_close_all(void) +{ + struct pcap *handle; + + while ((handle = pcaps_to_close) != NULL) + pcap_close(handle); +} + +int +pcap_do_addexit(pcap_t *p) +{ + /* + * If we haven't already done so, arrange to have + * "pcap_close_all()" called when we exit. + */ + if (!did_atexit) { + if (atexit(pcap_close_all) == -1) { + /* + * "atexit()" failed; let our caller know. + */ + strncpy(p->errbuf, "atexit failed", + PCAP_ERRBUF_SIZE); + return (0); + } + did_atexit = 1; + } + return (1); +} + +void +pcap_add_to_pcaps_to_close(pcap_t *p) +{ + p->md.next = pcaps_to_close; + pcaps_to_close = p; +} + +void +pcap_remove_from_pcaps_to_close(pcap_t *p) +{ + pcap_t *pc, *prevpc; + + for (pc = pcaps_to_close, prevpc = NULL; pc != NULL; + prevpc = pc, pc = pc->md.next) { + if (pc == p) { + /* + * Found it. Remove it from the list. + */ + if (prevpc == NULL) { + /* + * It was at the head of the list. + */ + pcaps_to_close = pc->md.next; + } else { + /* + * It was in the middle of the list. + */ + prevpc->md.next = pc->md.next; + } + break; + } + } +} + +void +pcap_cleanup_live_common(pcap_t *p) +{ + if (p->buffer != NULL) { + free(p->buffer); + p->buffer = NULL; + } + if (p->dlt_list != NULL) { + free(p->dlt_list); + p->dlt_list = NULL; + p->dlt_count = 0; + } + if (p->tstamp_type_list != NULL) { + free(p->tstamp_type_list); + p->tstamp_type_list = NULL; + p->tstamp_type_count = 0; + } + pcap_freecode(&p->fcode); +#if !defined(WIN32) && !defined(MSDOS) + if (p->fd >= 0) { + close(p->fd); + p->fd = -1; + } + p->selectable_fd = -1; + p->send_fd = -1; +#endif +} + +static void +pcap_cleanup_dead(pcap_t *p _U_) +{ + /* Nothing to do. */ +} + +pcap_t * +pcap_open_dead(int linktype, int snaplen) +{ + pcap_t *p; + + p = malloc(sizeof(*p)); + if (p == NULL) + return NULL; + memset (p, 0, sizeof(*p)); + p->snapshot = snaplen; + p->linktype = linktype; + p->stats_op = pcap_stats_dead; +#ifdef WIN32 + p->setbuff_op = pcap_setbuff_dead; + p->setmode_op = pcap_setmode_dead; + p->setmintocopy_op = pcap_setmintocopy_dead; +#endif + p->cleanup_op = pcap_cleanup_dead; + p->activated = 1; + return (p); +} + +/* + * API compatible with WinPcap's "send a packet" routine - returns -1 + * on error, 0 otherwise. + * + * XXX - what if we get a short write? + */ +int +pcap_sendpacket(pcap_t *p, const u_char *buf, int size) +{ + if (p->inject_op(p, buf, size) == -1) + return (-1); + return (0); +} + +/* + * API compatible with OpenBSD's "send a packet" routine - returns -1 on + * error, number of bytes written otherwise. + */ +int +pcap_inject(pcap_t *p, const void *buf, size_t size) +{ + return (p->inject_op(p, buf, size)); +} + +void +pcap_close(pcap_t *p) +{ + if (p->opt.source != NULL) + free(p->opt.source); + p->cleanup_op(p); + free(p); +} + +/* + * Given a BPF program, a pcap_pkthdr structure for a packet, and the raw + * data for the packet, check whether the packet passes the filter. + * Returns the return value of the filter program, which will be zero if + * the packet doesn't pass and non-zero if the packet does pass. + */ +int +pcap_offline_filter(struct bpf_program *fp, const struct pcap_pkthdr *h, + const u_char *pkt) +{ + struct bpf_insn *fcode = fp->bf_insns; + + if (fcode != NULL) + return (bpf_filter(fcode, pkt, h->len, h->caplen)); + else + return (0); +} + +/* + * We make the version string static, and return a pointer to it, rather + * than exporting the version string directly. On at least some UNIXes, + * if you import data from a shared library into an program, the data is + * bound into the program binary, so if the string in the version of the + * library with which the program was linked isn't the same as the + * string in the version of the library with which the program is being + * run, various undesirable things may happen (warnings, the string + * being the one from the version of the library with which the program + * was linked, or even weirder things, such as the string being the one + * from the library but being truncated). + */ +#ifdef HAVE_VERSION_H +#include "version.h" +#else +static const char pcap_version_string[] = "libpcap version 1.x.y"; +#endif + +#ifdef WIN32 +/* + * XXX - it'd be nice if we could somehow generate the WinPcap and libpcap + * version numbers when building WinPcap. (It'd be nice to do so for + * the packet.dll version number as well.) + */ +static const char wpcap_version_string[] = "4.0"; +static const char pcap_version_string_fmt[] = + "WinPcap version %s, based on %s"; +static const char pcap_version_string_packet_dll_fmt[] = + "WinPcap version %s (packet.dll version %s), based on %s"; +static char *full_pcap_version_string; + +const char * +pcap_lib_version(void) +{ + char *packet_version_string; + size_t full_pcap_version_string_len; + + if (full_pcap_version_string == NULL) { + /* + * Generate the version string. + */ + packet_version_string = PacketGetVersion(); + if (strcmp(wpcap_version_string, packet_version_string) == 0) { + /* + * WinPcap version string and packet.dll version + * string are the same; just report the WinPcap + * version. + */ + full_pcap_version_string_len = + (sizeof pcap_version_string_fmt - 4) + + strlen(wpcap_version_string) + + strlen(pcap_version_string); + full_pcap_version_string = + malloc(full_pcap_version_string_len); + sprintf(full_pcap_version_string, + pcap_version_string_fmt, wpcap_version_string, + pcap_version_string); + } else { + /* + * WinPcap version string and packet.dll version + * string are different; that shouldn't be the + * case (the two libraries should come from the + * same version of WinPcap), so we report both + * versions. + */ + full_pcap_version_string_len = + (sizeof pcap_version_string_packet_dll_fmt - 6) + + strlen(wpcap_version_string) + + strlen(packet_version_string) + + strlen(pcap_version_string); + full_pcap_version_string = malloc(full_pcap_version_string_len); + + sprintf(full_pcap_version_string, + pcap_version_string_packet_dll_fmt, + wpcap_version_string, packet_version_string, + pcap_version_string); + } + } + return (full_pcap_version_string); +} + +#elif defined(MSDOS) + +static char *full_pcap_version_string; + +const char * +pcap_lib_version (void) +{ + char *packet_version_string; + size_t full_pcap_version_string_len; + static char dospfx[] = "DOS-"; + + if (full_pcap_version_string == NULL) { + /* + * Generate the version string. + */ + full_pcap_version_string_len = + sizeof dospfx + strlen(pcap_version_string); + full_pcap_version_string = + malloc(full_pcap_version_string_len); + strcpy(full_pcap_version_string, dospfx); + strcat(full_pcap_version_string, pcap_version_string); + } + return (full_pcap_version_string); +} + +#else /* UN*X */ + +const char * +pcap_lib_version(void) +{ + return (pcap_version_string); +} +#endif diff --git a/pcap.h b/pcap.h new file mode 100644 index 0000000..490a4bf --- /dev/null +++ b/pcap.h @@ -0,0 +1,45 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#) $Header: /tcpdump/master/libpcap/pcap.h,v 1.59 2006-10-04 18:09:22 guy Exp $ (LBL) + */ + +/* + * For backwards compatibility. + * + * Note to OS vendors: do NOT get rid of this file! Many applications + * expect to be able to include , and at least some of them + * go through contortions in their configure scripts to try to detect + * OSes that have "helpfully" moved pcap.h to without + * leaving behind a file. + */ +#include diff --git a/pcap/bluetooth.h b/pcap/bluetooth.h new file mode 100644 index 0000000..813bea3 --- /dev/null +++ b/pcap/bluetooth.h @@ -0,0 +1,48 @@ +/* + * Copyright (c) 2006 Paolo Abeni (Italy) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * bluetooth data struct + * By Paolo Abeni + * + * @(#) $Header: /tcpdump/master/libpcap/pcap/bluetooth.h,v 1.1 2007-09-22 02:10:17 guy Exp $ + */ + +#ifndef _PCAP_BLUETOOTH_STRUCTS_H__ +#define _PCAP_BLUETOOTH_STRUCTS_H__ + +/* + * Header prepended libpcap to each bluetooth h:4 frame. + * fields are in network byte order + */ +typedef struct _pcap_bluetooth_h4_header { + u_int32_t direction; /* if first bit is set direction is incoming */ +} pcap_bluetooth_h4_header; + + +#endif diff --git a/pcap/bpf.h b/pcap/bpf.h new file mode 100644 index 0000000..8bcde7f --- /dev/null +++ b/pcap/bpf.h @@ -0,0 +1,1289 @@ +/*- + * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from the Stanford/CMU enet packet filter, + * (net/enet.c) distributed as part of 4.3BSD, and code contributed + * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence + * Berkeley Laboratory. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)bpf.h 7.1 (Berkeley) 5/7/91 + * + * @(#) $Header: /tcpdump/master/libpcap/pcap/bpf.h,v 1.32 2008-12-23 20:13:29 guy Exp $ (LBL) + */ + +/* + * This is libpcap's cut-down version of bpf.h; it includes only + * the stuff needed for the code generator and the userland BPF + * interpreter, and the libpcap APIs for setting filters, etc.. + * + * "pcap-bpf.c" will include the native OS version, as it deals with + * the OS's BPF implementation. + * + * At least two programs found by Google Code Search explicitly includes + * (even though / includes it for you), + * so moving that stuff to would break the build for some + * programs. + */ + +/* + * If we've already included , don't re-define this stuff. + * We assume BSD-style multiple-include protection in , + * which is true of all but the oldest versions of FreeBSD and NetBSD, + * or Tru64 UNIX-style multiple-include protection (or, at least, + * Tru64 UNIX 5.x-style; I don't have earlier versions available to check), + * or AIX-style multiple-include protection (or, at least, AIX 5.x-style; + * I don't have earlier versions available to check). + * + * We do not check for BPF_MAJOR_VERSION, as that's defined by + * , which is directly or indirectly included in some + * programs that also include pcap.h, and doesn't + * define stuff we need. + * + * This also provides our own multiple-include protection. + */ +#if !defined(_NET_BPF_H_) && !defined(_BPF_H_) && !defined(_H_BPF) && !defined(lib_pcap_bpf_h) +#define lib_pcap_bpf_h + +#ifdef __cplusplus +extern "C" { +#endif + +/* BSD style release date */ +#define BPF_RELEASE 199606 + +#ifdef MSDOS /* must be 32-bit */ +typedef long bpf_int32; +typedef unsigned long bpf_u_int32; +#else +typedef int bpf_int32; +typedef u_int bpf_u_int32; +#endif + +/* + * Alignment macros. BPF_WORDALIGN rounds up to the next + * even multiple of BPF_ALIGNMENT. + * + * Tcpdump's print-pflog.c uses this, so we define it here. + */ +#ifndef __NetBSD__ +#define BPF_ALIGNMENT sizeof(bpf_int32) +#else +#define BPF_ALIGNMENT sizeof(long) +#endif +#define BPF_WORDALIGN(x) (((x)+(BPF_ALIGNMENT-1))&~(BPF_ALIGNMENT-1)) + +/* + * Structure for "pcap_compile()", "pcap_setfilter()", etc.. + */ +struct bpf_program { + u_int bf_len; + struct bpf_insn *bf_insns; +}; + +/* + * Link-layer header type codes. + * + * Do *NOT* add new values to this list without asking + * "tcpdump-workers@lists.tcpdump.org" for a value. Otherwise, you run + * the risk of using a value that's already being used for some other + * purpose, and of having tools that read libpcap-format captures not + * being able to handle captures with your new DLT_ value, with no hope + * that they will ever be changed to do so (as that would destroy their + * ability to read captures using that value for that other purpose). + * + * See + * + * http://www.tcpdump.org/linktypes.html + * + * for detailed descriptions of some of these link-layer header types. + */ + +/* + * These are the types that are the same on all platforms, and that + * have been defined by for ages. + */ +#define DLT_NULL 0 /* BSD loopback encapsulation */ +#define DLT_EN10MB 1 /* Ethernet (10Mb) */ +#define DLT_EN3MB 2 /* Experimental Ethernet (3Mb) */ +#define DLT_AX25 3 /* Amateur Radio AX.25 */ +#define DLT_PRONET 4 /* Proteon ProNET Token Ring */ +#define DLT_CHAOS 5 /* Chaos */ +#define DLT_IEEE802 6 /* 802.5 Token Ring */ +#define DLT_ARCNET 7 /* ARCNET, with BSD-style header */ +#define DLT_SLIP 8 /* Serial Line IP */ +#define DLT_PPP 9 /* Point-to-point Protocol */ +#define DLT_FDDI 10 /* FDDI */ + +/* + * These are types that are different on some platforms, and that + * have been defined by for ages. We use #ifdefs to + * detect the BSDs that define them differently from the traditional + * libpcap + * + * XXX - DLT_ATM_RFC1483 is 13 in BSD/OS, and DLT_RAW is 14 in BSD/OS, + * but I don't know what the right #define is for BSD/OS. + */ +#define DLT_ATM_RFC1483 11 /* LLC-encapsulated ATM */ + +#ifdef __OpenBSD__ +#define DLT_RAW 14 /* raw IP */ +#else +#define DLT_RAW 12 /* raw IP */ +#endif + +/* + * Given that the only OS that currently generates BSD/OS SLIP or PPP + * is, well, BSD/OS, arguably everybody should have chosen its values + * for DLT_SLIP_BSDOS and DLT_PPP_BSDOS, which are 15 and 16, but they + * didn't. So it goes. + */ +#if defined(__NetBSD__) || defined(__FreeBSD__) +#ifndef DLT_SLIP_BSDOS +#define DLT_SLIP_BSDOS 13 /* BSD/OS Serial Line IP */ +#define DLT_PPP_BSDOS 14 /* BSD/OS Point-to-point Protocol */ +#endif +#else +#define DLT_SLIP_BSDOS 15 /* BSD/OS Serial Line IP */ +#define DLT_PPP_BSDOS 16 /* BSD/OS Point-to-point Protocol */ +#endif + +/* + * 17 was used for DLT_PFLOG in OpenBSD; it no longer is. + * + * It was DLT_LANE8023 in SuSE 6.3, so we defined LINKTYPE_PFLOG + * as 117 so that pflog captures would use a link-layer header type + * value that didn't collide with any other values. On all + * platforms other than OpenBSD, we defined DLT_PFLOG as 117, + * and we mapped between LINKTYPE_PFLOG and DLT_PFLOG. + * + * OpenBSD eventually switched to using 117 for DLT_PFLOG as well. + * + * Don't use 17 for anything else. + */ + +/* + * 18 is used for DLT_PFSYNC in OpenBSD, NetBSD, DragonFly BSD and + * Mac OS X; don't use it for anything else. (FreeBSD uses 121, + * which collides with DLT_HHDLC, even though it doesn't use 18 + * for anything and doesn't appear to have ever used it for anything.) + * + * We define it as 18 on those platforms; it is, unfortunately, used + * for DLT_CIP in Suse 6.3, so we don't define it as DLT_PFSYNC + * in general. As the packet format for it, like that for + * DLT_PFLOG, is not only OS-dependent but OS-version-dependent, + * we don't support printing it in tcpdump except on OSes that + * have the relevant header files, so it's not that useful on + * other platforms. + */ +#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__APPLE__) +#define DLT_PFSYNC 18 +#endif + +#define DLT_ATM_CLIP 19 /* Linux Classical-IP over ATM */ + +/* + * Apparently Redback uses this for its SmartEdge 400/800. I hope + * nobody else decided to use it, too. + */ +#define DLT_REDBACK_SMARTEDGE 32 + +/* + * These values are defined by NetBSD; other platforms should refrain from + * using them for other purposes, so that NetBSD savefiles with link + * types of 50 or 51 can be read as this type on all platforms. + */ +#define DLT_PPP_SERIAL 50 /* PPP over serial with HDLC encapsulation */ +#define DLT_PPP_ETHER 51 /* PPP over Ethernet */ + +/* + * The Axent Raptor firewall - now the Symantec Enterprise Firewall - uses + * a link-layer type of 99 for the tcpdump it supplies. The link-layer + * header has 6 bytes of unknown data, something that appears to be an + * Ethernet type, and 36 bytes that appear to be 0 in at least one capture + * I've seen. + */ +#define DLT_SYMANTEC_FIREWALL 99 + +/* + * Values between 100 and 103 are used in capture file headers as + * link-layer header type LINKTYPE_ values corresponding to DLT_ types + * that differ between platforms; don't use those values for new DLT_ + * new types. + */ + +/* + * Values starting with 104 are used for newly-assigned link-layer + * header type values; for those link-layer header types, the DLT_ + * value returned by pcap_datalink() and passed to pcap_open_dead(), + * and the LINKTYPE_ value that appears in capture files, are the + * same. + * + * DLT_MATCHING_MIN is the lowest such value; DLT_MATCHING_MAX is + * the highest such value. + */ +#define DLT_MATCHING_MIN 104 + +/* + * This value was defined by libpcap 0.5; platforms that have defined + * it with a different value should define it here with that value - + * a link type of 104 in a save file will be mapped to DLT_C_HDLC, + * whatever value that happens to be, so programs will correctly + * handle files with that link type regardless of the value of + * DLT_C_HDLC. + * + * The name DLT_C_HDLC was used by BSD/OS; we use that name for source + * compatibility with programs written for BSD/OS. + * + * libpcap 0.5 defined it as DLT_CHDLC; we define DLT_CHDLC as well, + * for source compatibility with programs written for libpcap 0.5. + */ +#define DLT_C_HDLC 104 /* Cisco HDLC */ +#define DLT_CHDLC DLT_C_HDLC + +#define DLT_IEEE802_11 105 /* IEEE 802.11 wireless */ + +/* + * 106 is reserved for Linux Classical IP over ATM; it's like DLT_RAW, + * except when it isn't. (I.e., sometimes it's just raw IP, and + * sometimes it isn't.) We currently handle it as DLT_LINUX_SLL, + * so that we don't have to worry about the link-layer header.) + */ + +/* + * Frame Relay; BSD/OS has a DLT_FR with a value of 11, but that collides + * with other values. + * DLT_FR and DLT_FRELAY packets start with the Q.922 Frame Relay header + * (DLCI, etc.). + */ +#define DLT_FRELAY 107 + +/* + * OpenBSD DLT_LOOP, for loopback devices; it's like DLT_NULL, except + * that the AF_ type in the link-layer header is in network byte order. + * + * DLT_LOOP is 12 in OpenBSD, but that's DLT_RAW in other OSes, so + * we don't use 12 for it in OSes other than OpenBSD. + */ +#ifdef __OpenBSD__ +#define DLT_LOOP 12 +#else +#define DLT_LOOP 108 +#endif + +/* + * Encapsulated packets for IPsec; DLT_ENC is 13 in OpenBSD, but that's + * DLT_SLIP_BSDOS in NetBSD, so we don't use 13 for it in OSes other + * than OpenBSD. + */ +#ifdef __OpenBSD__ +#define DLT_ENC 13 +#else +#define DLT_ENC 109 +#endif + +/* + * Values between 110 and 112 are reserved for use in capture file headers + * as link-layer types corresponding to DLT_ types that might differ + * between platforms; don't use those values for new DLT_ types + * other than the corresponding DLT_ types. + */ + +/* + * This is for Linux cooked sockets. + */ +#define DLT_LINUX_SLL 113 + +/* + * Apple LocalTalk hardware. + */ +#define DLT_LTALK 114 + +/* + * Acorn Econet. + */ +#define DLT_ECONET 115 + +/* + * Reserved for use with OpenBSD ipfilter. + */ +#define DLT_IPFILTER 116 + +/* + * OpenBSD DLT_PFLOG. + */ +#define DLT_PFLOG 117 + +/* + * Registered for Cisco-internal use. + */ +#define DLT_CISCO_IOS 118 + +/* + * For 802.11 cards using the Prism II chips, with a link-layer + * header including Prism monitor mode information plus an 802.11 + * header. + */ +#define DLT_PRISM_HEADER 119 + +/* + * Reserved for Aironet 802.11 cards, with an Aironet link-layer header + * (see Doug Ambrisko's FreeBSD patches). + */ +#define DLT_AIRONET_HEADER 120 + +/* + * Sigh. + * + * This was reserved for Siemens HiPath HDLC on 2002-01-25, as + * requested by Tomas Kukosa. + * + * On 2004-02-25, a FreeBSD checkin to sys/net/bpf.h was made that + * assigned 121 as DLT_PFSYNC. Its libpcap does DLT_ <-> LINKTYPE_ + * mapping, so it probably supports capturing on the pfsync device + * but not saving the captured data to a pcap file. + * + * OpenBSD, from which pf came, however, uses 18 for DLT_PFSYNC; + * their libpcap does no DLT_ <-> LINKTYPE_ mapping, so it would + * use 18 in pcap files as well. + * + * NetBSD and DragonFly BSD also use 18 for DLT_PFSYNC; their + * libpcaps do DLT_ <-> LINKTYPE_ mapping, and neither has an entry + * for DLT_PFSYNC, so it might not be able to write out dump files + * with 18 as the link-layer header type. (Earlier versions might + * not have done mapping, in which case they'd work the same way + * OpenBSD does.) + * + * Mac OS X defines it as 18, but doesn't appear to use it as of + * Mac OS X 10.7.3. Its libpcap does DLT_ <-> LINKTYPE_ mapping. + * + * We'll define DLT_PFSYNC as 121 on FreeBSD and define it as 18 on + * all other platforms. We'll define DLT_HHDLC as 121 on everything + * except for FreeBSD; anybody who wants to compile, on FreeBSD, code + * that uses DLT_HHDLC is out of luck. + * + * We'll define LINKTYPE_PFSYNC as 18, *even on FreeBSD*, and map + * it, so that savefiles won't use 121 for PFSYNC - they'll all + * use 18. Code that uses pcap_datalink() to determine the link-layer + * header type of a savefile won't, when built and run on FreeBSD, + * be able to distinguish between LINKTYPE_PFSYNC and LINKTYPE_HHDLC + * capture files; code that doesn't, such as the code in Wireshark, + * will be able to distinguish between them. + */ +#ifdef __FreeBSD__ +#define DLT_PFSYNC 121 +#else +#define DLT_HHDLC 121 +#endif + +/* + * This is for RFC 2625 IP-over-Fibre Channel. + * + * This is not for use with raw Fibre Channel, where the link-layer + * header starts with a Fibre Channel frame header; it's for IP-over-FC, + * where the link-layer header starts with an RFC 2625 Network_Header + * field. + */ +#define DLT_IP_OVER_FC 122 + +/* + * This is for Full Frontal ATM on Solaris with SunATM, with a + * pseudo-header followed by an AALn PDU. + * + * There may be other forms of Full Frontal ATM on other OSes, + * with different pseudo-headers. + * + * If ATM software returns a pseudo-header with VPI/VCI information + * (and, ideally, packet type information, e.g. signalling, ILMI, + * LANE, LLC-multiplexed traffic, etc.), it should not use + * DLT_ATM_RFC1483, but should get a new DLT_ value, so tcpdump + * and the like don't have to infer the presence or absence of a + * pseudo-header and the form of the pseudo-header. + */ +#define DLT_SUNATM 123 /* Solaris+SunATM */ + +/* + * Reserved as per request from Kent Dahlgren + * for private use. + */ +#define DLT_RIO 124 /* RapidIO */ +#define DLT_PCI_EXP 125 /* PCI Express */ +#define DLT_AURORA 126 /* Xilinx Aurora link layer */ + +/* + * Header for 802.11 plus a number of bits of link-layer information + * including radio information, used by some recent BSD drivers as + * well as the madwifi Atheros driver for Linux. + */ +#define DLT_IEEE802_11_RADIO 127 /* 802.11 plus radiotap radio header */ + +/* + * Reserved for the TZSP encapsulation, as per request from + * Chris Waters + * TZSP is a generic encapsulation for any other link type, + * which includes a means to include meta-information + * with the packet, e.g. signal strength and channel + * for 802.11 packets. + */ +#define DLT_TZSP 128 /* Tazmen Sniffer Protocol */ + +/* + * BSD's ARCNET headers have the source host, destination host, + * and type at the beginning of the packet; that's what's handed + * up to userland via BPF. + * + * Linux's ARCNET headers, however, have a 2-byte offset field + * between the host IDs and the type; that's what's handed up + * to userland via PF_PACKET sockets. + * + * We therefore have to have separate DLT_ values for them. + */ +#define DLT_ARCNET_LINUX 129 /* ARCNET */ + +/* + * Juniper-private data link types, as per request from + * Hannes Gredler . The DLT_s are used + * for passing on chassis-internal metainformation such as + * QOS profiles, etc.. + */ +#define DLT_JUNIPER_MLPPP 130 +#define DLT_JUNIPER_MLFR 131 +#define DLT_JUNIPER_ES 132 +#define DLT_JUNIPER_GGSN 133 +#define DLT_JUNIPER_MFR 134 +#define DLT_JUNIPER_ATM2 135 +#define DLT_JUNIPER_SERVICES 136 +#define DLT_JUNIPER_ATM1 137 + +/* + * Apple IP-over-IEEE 1394, as per a request from Dieter Siegmund + * . The header that's presented is an Ethernet-like + * header: + * + * #define FIREWIRE_EUI64_LEN 8 + * struct firewire_header { + * u_char firewire_dhost[FIREWIRE_EUI64_LEN]; + * u_char firewire_shost[FIREWIRE_EUI64_LEN]; + * u_short firewire_type; + * }; + * + * with "firewire_type" being an Ethernet type value, rather than, + * for example, raw GASP frames being handed up. + */ +#define DLT_APPLE_IP_OVER_IEEE1394 138 + +/* + * Various SS7 encapsulations, as per a request from Jeff Morriss + * and subsequent discussions. + */ +#define DLT_MTP2_WITH_PHDR 139 /* pseudo-header with various info, followed by MTP2 */ +#define DLT_MTP2 140 /* MTP2, without pseudo-header */ +#define DLT_MTP3 141 /* MTP3, without pseudo-header or MTP2 */ +#define DLT_SCCP 142 /* SCCP, without pseudo-header or MTP2 or MTP3 */ + +/* + * DOCSIS MAC frames. + */ +#define DLT_DOCSIS 143 + +/* + * Linux-IrDA packets. Protocol defined at http://www.irda.org. + * Those packets include IrLAP headers and above (IrLMP...), but + * don't include Phy framing (SOF/EOF/CRC & byte stuffing), because Phy + * framing can be handled by the hardware and depend on the bitrate. + * This is exactly the format you would get capturing on a Linux-IrDA + * interface (irdaX), but not on a raw serial port. + * Note the capture is done in "Linux-cooked" mode, so each packet include + * a fake packet header (struct sll_header). This is because IrDA packet + * decoding is dependant on the direction of the packet (incomming or + * outgoing). + * When/if other platform implement IrDA capture, we may revisit the + * issue and define a real DLT_IRDA... + * Jean II + */ +#define DLT_LINUX_IRDA 144 + +/* + * Reserved for IBM SP switch and IBM Next Federation switch. + */ +#define DLT_IBM_SP 145 +#define DLT_IBM_SN 146 + +/* + * Reserved for private use. If you have some link-layer header type + * that you want to use within your organization, with the capture files + * using that link-layer header type not ever be sent outside your + * organization, you can use these values. + * + * No libpcap release will use these for any purpose, nor will any + * tcpdump release use them, either. + * + * Do *NOT* use these in capture files that you expect anybody not using + * your private versions of capture-file-reading tools to read; in + * particular, do *NOT* use them in products, otherwise you may find that + * people won't be able to use tcpdump, or snort, or Ethereal, or... to + * read capture files from your firewall/intrusion detection/traffic + * monitoring/etc. appliance, or whatever product uses that DLT_ value, + * and you may also find that the developers of those applications will + * not accept patches to let them read those files. + * + * Also, do not use them if somebody might send you a capture using them + * for *their* private type and tools using them for *your* private type + * would have to read them. + * + * Instead, ask "tcpdump-workers@lists.tcpdump.org" for a new DLT_ value, + * as per the comment above, and use the type you're given. + */ +#define DLT_USER0 147 +#define DLT_USER1 148 +#define DLT_USER2 149 +#define DLT_USER3 150 +#define DLT_USER4 151 +#define DLT_USER5 152 +#define DLT_USER6 153 +#define DLT_USER7 154 +#define DLT_USER8 155 +#define DLT_USER9 156 +#define DLT_USER10 157 +#define DLT_USER11 158 +#define DLT_USER12 159 +#define DLT_USER13 160 +#define DLT_USER14 161 +#define DLT_USER15 162 + +/* + * For future use with 802.11 captures - defined by AbsoluteValue + * Systems to store a number of bits of link-layer information + * including radio information: + * + * http://www.shaftnet.org/~pizza/software/capturefrm.txt + * + * but it might be used by some non-AVS drivers now or in the + * future. + */ +#define DLT_IEEE802_11_RADIO_AVS 163 /* 802.11 plus AVS radio header */ + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . The DLT_s are used + * for passing on chassis-internal metainformation such as + * QOS profiles, etc.. + */ +#define DLT_JUNIPER_MONITOR 164 + +/* + * BACnet MS/TP frames. + */ +#define DLT_BACNET_MS_TP 165 + +/* + * Another PPP variant as per request from Karsten Keil . + * + * This is used in some OSes to allow a kernel socket filter to distinguish + * between incoming and outgoing packets, on a socket intended to + * supply pppd with outgoing packets so it can do dial-on-demand and + * hangup-on-lack-of-demand; incoming packets are filtered out so they + * don't cause pppd to hold the connection up (you don't want random + * input packets such as port scans, packets from old lost connections, + * etc. to force the connection to stay up). + * + * The first byte of the PPP header (0xff03) is modified to accomodate + * the direction - 0x00 = IN, 0x01 = OUT. + */ +#define DLT_PPP_PPPD 166 + +/* + * Names for backwards compatibility with older versions of some PPP + * software; new software should use DLT_PPP_PPPD. + */ +#define DLT_PPP_WITH_DIRECTION DLT_PPP_PPPD +#define DLT_LINUX_PPP_WITHDIRECTION DLT_PPP_PPPD + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . The DLT_s are used + * for passing on chassis-internal metainformation such as + * QOS profiles, cookies, etc.. + */ +#define DLT_JUNIPER_PPPOE 167 +#define DLT_JUNIPER_PPPOE_ATM 168 + +#define DLT_GPRS_LLC 169 /* GPRS LLC */ +#define DLT_GPF_T 170 /* GPF-T (ITU-T G.7041/Y.1303) */ +#define DLT_GPF_F 171 /* GPF-F (ITU-T G.7041/Y.1303) */ + +/* + * Requested by Oolan Zimmer for use in Gcom's T1/E1 line + * monitoring equipment. + */ +#define DLT_GCOM_T1E1 172 +#define DLT_GCOM_SERIAL 173 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . The DLT_ is used + * for internal communication to Physical Interface Cards (PIC) + */ +#define DLT_JUNIPER_PIC_PEER 174 + +/* + * Link types requested by Gregor Maier of Endace + * Measurement Systems. They add an ERF header (see + * http://www.endace.com/support/EndaceRecordFormat.pdf) in front of + * the link-layer header. + */ +#define DLT_ERF_ETH 175 /* Ethernet */ +#define DLT_ERF_POS 176 /* Packet-over-SONET */ + +/* + * Requested by Daniele Orlandi for raw LAPD + * for vISDN (http://www.orlandi.com/visdn/). Its link-layer header + * includes additional information before the LAPD header, so it's + * not necessarily a generic LAPD header. + */ +#define DLT_LINUX_LAPD 177 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . + * The DLT_ are used for prepending meta-information + * like interface index, interface name + * before standard Ethernet, PPP, Frelay & C-HDLC Frames + */ +#define DLT_JUNIPER_ETHER 178 +#define DLT_JUNIPER_PPP 179 +#define DLT_JUNIPER_FRELAY 180 +#define DLT_JUNIPER_CHDLC 181 + +/* + * Multi Link Frame Relay (FRF.16) + */ +#define DLT_MFR 182 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . + * The DLT_ is used for internal communication with a + * voice Adapter Card (PIC) + */ +#define DLT_JUNIPER_VP 183 + +/* + * Arinc 429 frames. + * DLT_ requested by Gianluca Varenni . + * Every frame contains a 32bit A429 label. + * More documentation on Arinc 429 can be found at + * http://www.condoreng.com/support/downloads/tutorials/ARINCTutorial.pdf + */ +#define DLT_A429 184 + +/* + * Arinc 653 Interpartition Communication messages. + * DLT_ requested by Gianluca Varenni . + * Please refer to the A653-1 standard for more information. + */ +#define DLT_A653_ICM 185 + +/* + * USB packets, beginning with a USB setup header; requested by + * Paolo Abeni . + */ +#define DLT_USB 186 + +/* + * Bluetooth HCI UART transport layer (part H:4); requested by + * Paolo Abeni. + */ +#define DLT_BLUETOOTH_HCI_H4 187 + +/* + * IEEE 802.16 MAC Common Part Sublayer; requested by Maria Cruz + * . + */ +#define DLT_IEEE802_16_MAC_CPS 188 + +/* + * USB packets, beginning with a Linux USB header; requested by + * Paolo Abeni . + */ +#define DLT_USB_LINUX 189 + +/* + * Controller Area Network (CAN) v. 2.0B packets. + * DLT_ requested by Gianluca Varenni . + * Used to dump CAN packets coming from a CAN Vector board. + * More documentation on the CAN v2.0B frames can be found at + * http://www.can-cia.org/downloads/?269 + */ +#define DLT_CAN20B 190 + +/* + * IEEE 802.15.4, with address fields padded, as is done by Linux + * drivers; requested by Juergen Schimmer. + */ +#define DLT_IEEE802_15_4_LINUX 191 + +/* + * Per Packet Information encapsulated packets. + * DLT_ requested by Gianluca Varenni . + */ +#define DLT_PPI 192 + +/* + * Header for 802.16 MAC Common Part Sublayer plus a radiotap radio header; + * requested by Charles Clancy. + */ +#define DLT_IEEE802_16_MAC_CPS_RADIO 193 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . + * The DLT_ is used for internal communication with a + * integrated service module (ISM). + */ +#define DLT_JUNIPER_ISM 194 + +/* + * IEEE 802.15.4, exactly as it appears in the spec (no padding, no + * nothing); requested by Mikko Saarnivala . + * For this one, we expect the FCS to be present at the end of the frame; + * if the frame has no FCS, DLT_IEEE802_15_4_NOFCS should be used. + */ +#define DLT_IEEE802_15_4 195 + +/* + * Various link-layer types, with a pseudo-header, for SITA + * (http://www.sita.aero/); requested by Fulko Hew (fulko.hew@gmail.com). + */ +#define DLT_SITA 196 + +/* + * Various link-layer types, with a pseudo-header, for Endace DAG cards; + * encapsulates Endace ERF records. Requested by Stephen Donnelly + * . + */ +#define DLT_ERF 197 + +/* + * Special header prepended to Ethernet packets when capturing from a + * u10 Networks board. Requested by Phil Mulholland + * . + */ +#define DLT_RAIF1 198 + +/* + * IPMB packet for IPMI, beginning with the I2C slave address, followed + * by the netFn and LUN, etc.. Requested by Chanthy Toeung + * . + */ +#define DLT_IPMB 199 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . + * The DLT_ is used for capturing data on a secure tunnel interface. + */ +#define DLT_JUNIPER_ST 200 + +/* + * Bluetooth HCI UART transport layer (part H:4), with pseudo-header + * that includes direction information; requested by Paolo Abeni. + */ +#define DLT_BLUETOOTH_HCI_H4_WITH_PHDR 201 + +/* + * AX.25 packet with a 1-byte KISS header; see + * + * http://www.ax25.net/kiss.htm + * + * as per Richard Stearn . + */ +#define DLT_AX25_KISS 202 + +/* + * LAPD packets from an ISDN channel, starting with the address field, + * with no pseudo-header. + * Requested by Varuna De Silva . + */ +#define DLT_LAPD 203 + +/* + * Variants of various link-layer headers, with a one-byte direction + * pseudo-header prepended - zero means "received by this host", + * non-zero (any non-zero value) means "sent by this host" - as per + * Will Barker . + */ +#define DLT_PPP_WITH_DIR 204 /* PPP - don't confuse with DLT_PPP_WITH_DIRECTION */ +#define DLT_C_HDLC_WITH_DIR 205 /* Cisco HDLC */ +#define DLT_FRELAY_WITH_DIR 206 /* Frame Relay */ +#define DLT_LAPB_WITH_DIR 207 /* LAPB */ + +/* + * 208 is reserved for an as-yet-unspecified proprietary link-layer + * type, as requested by Will Barker. + */ + +/* + * IPMB with a Linux-specific pseudo-header; as requested by Alexey Neyman + * . + */ +#define DLT_IPMB_LINUX 209 + +/* + * FlexRay automotive bus - http://www.flexray.com/ - as requested + * by Hannes Kaelber . + */ +#define DLT_FLEXRAY 210 + +/* + * Media Oriented Systems Transport (MOST) bus for multimedia + * transport - http://www.mostcooperation.com/ - as requested + * by Hannes Kaelber . + */ +#define DLT_MOST 211 + +/* + * Local Interconnect Network (LIN) bus for vehicle networks - + * http://www.lin-subbus.org/ - as requested by Hannes Kaelber + * . + */ +#define DLT_LIN 212 + +/* + * X2E-private data link type used for serial line capture, + * as requested by Hannes Kaelber . + */ +#define DLT_X2E_SERIAL 213 + +/* + * X2E-private data link type used for the Xoraya data logger + * family, as requested by Hannes Kaelber . + */ +#define DLT_X2E_XORAYA 214 + +/* + * IEEE 802.15.4, exactly as it appears in the spec (no padding, no + * nothing), but with the PHY-level data for non-ASK PHYs (4 octets + * of 0 as preamble, one octet of SFD, one octet of frame length+ + * reserved bit, and then the MAC-layer data, starting with the + * frame control field). + * + * Requested by Max Filippov . + */ +#define DLT_IEEE802_15_4_NONASK_PHY 215 + +/* + * David Gibson requested this for + * captures from the Linux kernel /dev/input/eventN devices. This + * is used to communicate keystrokes and mouse movements from the + * Linux kernel to display systems, such as Xorg. + */ +#define DLT_LINUX_EVDEV 216 + +/* + * GSM Um and Abis interfaces, preceded by a "gsmtap" header. + * + * Requested by Harald Welte . + */ +#define DLT_GSMTAP_UM 217 +#define DLT_GSMTAP_ABIS 218 + +/* + * MPLS, with an MPLS label as the link-layer header. + * Requested by Michele Marchetto on behalf + * of OpenBSD. + */ +#define DLT_MPLS 219 + +/* + * USB packets, beginning with a Linux USB header, with the USB header + * padded to 64 bytes; required for memory-mapped access. + */ +#define DLT_USB_LINUX_MMAPPED 220 + +/* + * DECT packets, with a pseudo-header; requested by + * Matthias Wenzel . + */ +#define DLT_DECT 221 + +/* + * From: "Lidwa, Eric (GSFC-582.0)[SGT INC]" + * Date: Mon, 11 May 2009 11:18:30 -0500 + * + * DLT_AOS. We need it for AOS Space Data Link Protocol. + * I have already written dissectors for but need an OK from + * legal before I can submit a patch. + * + */ +#define DLT_AOS 222 + +/* + * Wireless HART (Highway Addressable Remote Transducer) + * From the HART Communication Foundation + * IES/PAS 62591 + * + * Requested by Sam Roberts . + */ +#define DLT_WIHART 223 + +/* + * Fibre Channel FC-2 frames, beginning with a Frame_Header. + * Requested by Kahou Lei . + */ +#define DLT_FC_2 224 + +/* + * Fibre Channel FC-2 frames, beginning with an encoding of the + * SOF, and ending with an encoding of the EOF. + * + * The encodings represent the frame delimiters as 4-byte sequences + * representing the corresponding ordered sets, with K28.5 + * represented as 0xBC, and the D symbols as the corresponding + * byte values; for example, SOFi2, which is K28.5 - D21.5 - D1.2 - D21.2, + * is represented as 0xBC 0xB5 0x55 0x55. + * + * Requested by Kahou Lei . + */ +#define DLT_FC_2_WITH_FRAME_DELIMS 225 + +/* + * Solaris ipnet pseudo-header; requested by Darren Reed . + * + * The pseudo-header starts with a one-byte version number; for version 2, + * the pseudo-header is: + * + * struct dl_ipnetinfo { + * u_int8_t dli_version; + * u_int8_t dli_family; + * u_int16_t dli_htype; + * u_int32_t dli_pktlen; + * u_int32_t dli_ifindex; + * u_int32_t dli_grifindex; + * u_int32_t dli_zsrc; + * u_int32_t dli_zdst; + * }; + * + * dli_version is 2 for the current version of the pseudo-header. + * + * dli_family is a Solaris address family value, so it's 2 for IPv4 + * and 26 for IPv6. + * + * dli_htype is a "hook type" - 0 for incoming packets, 1 for outgoing + * packets, and 2 for packets arriving from another zone on the same + * machine. + * + * dli_pktlen is the length of the packet data following the pseudo-header + * (so the captured length minus dli_pktlen is the length of the + * pseudo-header, assuming the entire pseudo-header was captured). + * + * dli_ifindex is the interface index of the interface on which the + * packet arrived. + * + * dli_grifindex is the group interface index number (for IPMP interfaces). + * + * dli_zsrc is the zone identifier for the source of the packet. + * + * dli_zdst is the zone identifier for the destination of the packet. + * + * A zone number of 0 is the global zone; a zone number of 0xffffffff + * means that the packet arrived from another host on the network, not + * from another zone on the same machine. + * + * An IPv4 or IPv6 datagram follows the pseudo-header; dli_family indicates + * which of those it is. + */ +#define DLT_IPNET 226 + +/* + * CAN (Controller Area Network) frames, with a pseudo-header as supplied + * by Linux SocketCAN. See Documentation/networking/can.txt in the Linux + * source. + * + * Requested by Felix Obenhuber . + */ +#define DLT_CAN_SOCKETCAN 227 + +/* + * Raw IPv4/IPv6; different from DLT_RAW in that the DLT_ value specifies + * whether it's v4 or v6. Requested by Darren Reed . + */ +#define DLT_IPV4 228 +#define DLT_IPV6 229 + +/* + * IEEE 802.15.4, exactly as it appears in the spec (no padding, no + * nothing), and with no FCS at the end of the frame; requested by + * Jon Smirl . + */ +#define DLT_IEEE802_15_4_NOFCS 230 + +/* + * Raw D-Bus: + * + * http://www.freedesktop.org/wiki/Software/dbus + * + * messages: + * + * http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-messages + * + * starting with the endianness flag, followed by the message type, etc., + * but without the authentication handshake before the message sequence: + * + * http://dbus.freedesktop.org/doc/dbus-specification.html#auth-protocol + * + * Requested by Martin Vidner . + */ +#define DLT_DBUS 231 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . + */ +#define DLT_JUNIPER_VS 232 +#define DLT_JUNIPER_SRX_E2E 233 +#define DLT_JUNIPER_FIBRECHANNEL 234 + +/* + * DVB-CI (DVB Common Interface for communication between a PC Card + * module and a DVB receiver). See + * + * http://www.kaiser.cx/pcap-dvbci.html + * + * for the specification. + * + * Requested by Martin Kaiser . + */ +#define DLT_DVB_CI 235 + +/* + * Variant of 3GPP TS 27.010 multiplexing protocol (similar to, but + * *not* the same as, 27.010). Requested by Hans-Christoph Schemmel + * . + */ +#define DLT_MUX27010 236 + +/* + * STANAG 5066 D_PDUs. Requested by M. Baris Demiray + * . + */ +#define DLT_STANAG_5066_D_PDU 237 + +/* + * Juniper-private data link type, as per request from + * Hannes Gredler . + */ +#define DLT_JUNIPER_ATM_CEMIC 238 + +/* + * NetFilter LOG messages + * (payload of netlink NFNL_SUBSYS_ULOG/NFULNL_MSG_PACKET packets) + * + * Requested by Jakub Zawadzki + */ +#define DLT_NFLOG 239 + +/* + * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type + * for Ethernet packets with a 4-byte pseudo-header and always + * with the payload including the FCS, as supplied by their + * netANALYZER hardware and software. + * + * Requested by Holger P. Frommer + */ +#define DLT_NETANALYZER 240 + +/* + * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type + * for Ethernet packets with a 4-byte pseudo-header and FCS and + * with the Ethernet header preceded by 7 bytes of preamble and + * 1 byte of SFD, as supplied by their netANALYZER hardware and + * software. + * + * Requested by Holger P. Frommer + */ +#define DLT_NETANALYZER_TRANSPARENT 241 + +/* + * IP-over-Infiniband, as specified by RFC 4391. + * + * Requested by Petr Sumbera . + */ +#define DLT_IPOIB 242 + +/* + * MPEG-2 transport stream (ISO 13818-1/ITU-T H.222.0). + * + * Requested by Guy Martin . + */ +#define DLT_MPEG_2_TS 243 + +/* + * ng4T GmbH's UMTS Iub/Iur-over-ATM and Iub/Iur-over-IP format as + * used by their ng40 protocol tester. + * + * Requested by Jens Grimmer . + */ +#define DLT_NG40 244 + +/* + * Pseudo-header giving adapter number and flags, followed by an NFC + * (Near-Field Communications) Logical Link Control Protocol (LLCP) PDU, + * as specified by NFC Forum Logical Link Control Protocol Technical + * Specification LLCP 1.1. + * + * Requested by Mike Wakerly . + */ +#define DLT_NFC_LLCP 245 + +/* + * 245 is used as LINKTYPE_PFSYNC; do not use it for any other purpose. + * + * DLT_PFSYNC has different values on different platforms, and all of + * them collide with something used elsewhere. On platforms that + * don't already define it, define it as 245. + */ +#if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__DragonFly__) && !defined(__APPLE__) +#define DLT_PFSYNC 246 +#endif + +#define DLT_MATCHING_MAX 246 /* highest value in the "matching" range */ + +/* + * DLT and savefile link type values are split into a class and + * a member of that class. A class value of 0 indicates a regular + * DLT_/LINKTYPE_ value. + */ +#define DLT_CLASS(x) ((x) & 0x03ff0000) + +/* + * NetBSD-specific generic "raw" link type. The class value indicates + * that this is the generic raw type, and the lower 16 bits are the + * address family we're dealing with. Those values are NetBSD-specific; + * do not assume that they correspond to AF_ values for your operating + * system. + */ +#define DLT_CLASS_NETBSD_RAWAF 0x02240000 +#define DLT_NETBSD_RAWAF(af) (DLT_CLASS_NETBSD_RAWAF | (af)) +#define DLT_NETBSD_RAWAF_AF(x) ((x) & 0x0000ffff) +#define DLT_IS_NETBSD_RAWAF(x) (DLT_CLASS(x) == DLT_CLASS_NETBSD_RAWAF) + + +/* + * The instruction encodings. + */ +/* instruction classes */ +#define BPF_CLASS(code) ((code) & 0x07) +#define BPF_LD 0x00 +#define BPF_LDX 0x01 +#define BPF_ST 0x02 +#define BPF_STX 0x03 +#define BPF_ALU 0x04 +#define BPF_JMP 0x05 +#define BPF_RET 0x06 +#define BPF_MISC 0x07 + +/* ld/ldx fields */ +#define BPF_SIZE(code) ((code) & 0x18) +#define BPF_W 0x00 +#define BPF_H 0x08 +#define BPF_B 0x10 +#define BPF_MODE(code) ((code) & 0xe0) +#define BPF_IMM 0x00 +#define BPF_ABS 0x20 +#define BPF_IND 0x40 +#define BPF_MEM 0x60 +#define BPF_LEN 0x80 +#define BPF_MSH 0xa0 + +/* alu/jmp fields */ +#define BPF_OP(code) ((code) & 0xf0) +#define BPF_ADD 0x00 +#define BPF_SUB 0x10 +#define BPF_MUL 0x20 +#define BPF_DIV 0x30 +#define BPF_OR 0x40 +#define BPF_AND 0x50 +#define BPF_LSH 0x60 +#define BPF_RSH 0x70 +#define BPF_NEG 0x80 +#define BPF_JA 0x00 +#define BPF_JEQ 0x10 +#define BPF_JGT 0x20 +#define BPF_JGE 0x30 +#define BPF_JSET 0x40 +#define BPF_SRC(code) ((code) & 0x08) +#define BPF_K 0x00 +#define BPF_X 0x08 + +/* ret - BPF_K and BPF_X also apply */ +#define BPF_RVAL(code) ((code) & 0x18) +#define BPF_A 0x10 + +/* misc */ +#define BPF_MISCOP(code) ((code) & 0xf8) +#define BPF_TAX 0x00 +#define BPF_TXA 0x80 + +/* + * The instruction data structure. + */ +struct bpf_insn { + u_short code; + u_char jt; + u_char jf; + bpf_u_int32 k; +}; + +/* + * Macros for insn array initializers. + */ +#define BPF_STMT(code, k) { (u_short)(code), 0, 0, k } +#define BPF_JUMP(code, k, jt, jf) { (u_short)(code), jt, jf, k } + +#if __STDC__ || defined(__cplusplus) +extern int bpf_validate(const struct bpf_insn *, int); +extern u_int bpf_filter(const struct bpf_insn *, const u_char *, u_int, u_int); +#else +extern int bpf_validate(); +extern u_int bpf_filter(); +#endif + +/* + * Number of scratch memory words (for BPF_LD|BPF_MEM and BPF_ST). + */ +#define BPF_MEMWORDS 16 + +#ifdef __cplusplus +} +#endif + +#endif /* !defined(_NET_BPF_H_) && !defined(_BPF_H_) && !defined(_H_BPF) && !defined(lib_pcap_bpf_h) */ diff --git a/pcap/ipnet.h b/pcap/ipnet.h new file mode 100644 index 0000000..5330847 --- /dev/null +++ b/pcap/ipnet.h @@ -0,0 +1,43 @@ +/*- + * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from the Stanford/CMU enet packet filter, + * (net/enet.c) distributed as part of 4.3BSD, and code contributed + * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence + * Berkeley Laboratory. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#define IPH_AF_INET 2 /* Matches Solaris's AF_INET */ +#define IPH_AF_INET6 26 /* Matches Solaris's AF_INET6 */ + +#define IPNET_OUTBOUND 1 +#define IPNET_INBOUND 2 diff --git a/pcap/namedb.h b/pcap/namedb.h new file mode 100644 index 0000000..e314557 --- /dev/null +++ b/pcap/namedb.h @@ -0,0 +1,89 @@ +/* + * Copyright (c) 1994, 1996 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#) $Header: /tcpdump/master/libpcap/pcap/namedb.h,v 1.1 2006-10-04 18:09:22 guy Exp $ (LBL) + */ + +#ifndef lib_pcap_namedb_h +#define lib_pcap_namedb_h + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * As returned by the pcap_next_etherent() + * XXX this stuff doesn't belong in this interface, but this + * library already must do name to address translation, so + * on systems that don't have support for /etc/ethers, we + * export these hooks since they'll + */ +struct pcap_etherent { + u_char addr[6]; + char name[122]; +}; +#ifndef PCAP_ETHERS_FILE +#define PCAP_ETHERS_FILE "/etc/ethers" +#endif +struct pcap_etherent *pcap_next_etherent(FILE *); +u_char *pcap_ether_hostton(const char*); +u_char *pcap_ether_aton(const char *); + +bpf_u_int32 **pcap_nametoaddr(const char *); +#ifdef INET6 +struct addrinfo *pcap_nametoaddrinfo(const char *); +#endif +bpf_u_int32 pcap_nametonetaddr(const char *); + +int pcap_nametoport(const char *, int *, int *); +int pcap_nametoportrange(const char *, int *, int *, int *); +int pcap_nametoproto(const char *); +int pcap_nametoeproto(const char *); +int pcap_nametollc(const char *); +/* + * If a protocol is unknown, PROTO_UNDEF is returned. + * Also, pcap_nametoport() returns the protocol along with the port number. + * If there are ambiguous entried in /etc/services (i.e. domain + * can be either tcp or udp) PROTO_UNDEF is returned. + */ +#define PROTO_UNDEF -1 + +/* XXX move these to pcap-int.h? */ +int __pcap_atodn(const char *, bpf_u_int32 *); +int __pcap_atoin(const char *, bpf_u_int32 *); +u_short __pcap_nametodnaddr(const char *); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/pcap/pcap.h b/pcap/pcap.h new file mode 100644 index 0000000..a02b359 --- /dev/null +++ b/pcap/pcap.h @@ -0,0 +1,462 @@ +/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#) $Header: /tcpdump/master/libpcap/pcap/pcap.h,v 1.15 2008-10-06 15:27:32 gianluca Exp $ (LBL) + */ + +#ifndef lib_pcap_pcap_h +#define lib_pcap_pcap_h + +#if defined(WIN32) + #include +#elif defined(MSDOS) + #include + #include /* u_int, u_char etc. */ +#else /* UN*X */ + #include + #include +#endif /* WIN32/MSDOS/UN*X */ + +#ifndef PCAP_DONT_INCLUDE_PCAP_BPF_H +#include +#endif + +#include + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Version number of the current version of the pcap file format. + * + * NOTE: this is *NOT* the version number of the libpcap library. + * To fetch the version information for the version of libpcap + * you're using, use pcap_lib_version(). + */ +#define PCAP_VERSION_MAJOR 2 +#define PCAP_VERSION_MINOR 4 + +#define PCAP_ERRBUF_SIZE 256 + +/* + * Compatibility for systems that have a bpf.h that + * predates the bpf typedefs for 64-bit support. + */ +#if BPF_RELEASE - 0 < 199406 +typedef int bpf_int32; +typedef u_int bpf_u_int32; +#endif + +typedef struct pcap pcap_t; +typedef struct pcap_dumper pcap_dumper_t; +typedef struct pcap_if pcap_if_t; +typedef struct pcap_addr pcap_addr_t; + +/* + * The first record in the file contains saved values for some + * of the flags used in the printout phases of tcpdump. + * Many fields here are 32 bit ints so compilers won't insert unwanted + * padding; these files need to be interchangeable across architectures. + * + * Do not change the layout of this structure, in any way (this includes + * changes that only affect the length of fields in this structure). + * + * Also, do not change the interpretation of any of the members of this + * structure, in any way (this includes using values other than + * LINKTYPE_ values, as defined in "savefile.c", in the "linktype" + * field). + * + * Instead: + * + * introduce a new structure for the new format, if the layout + * of the structure changed; + * + * send mail to "tcpdump-workers@lists.tcpdump.org", requesting + * a new magic number for your new capture file format, and, when + * you get the new magic number, put it in "savefile.c"; + * + * use that magic number for save files with the changed file + * header; + * + * make the code in "savefile.c" capable of reading files with + * the old file header as well as files with the new file header + * (using the magic number to determine the header format). + * + * Then supply the changes as a patch at + * + * http://sourceforge.net/projects/libpcap/ + * + * so that future versions of libpcap and programs that use it (such as + * tcpdump) will be able to read your new capture file format. + */ +struct pcap_file_header { + bpf_u_int32 magic; + u_short version_major; + u_short version_minor; + bpf_int32 thiszone; /* gmt to local correction */ + bpf_u_int32 sigfigs; /* accuracy of timestamps */ + bpf_u_int32 snaplen; /* max length saved portion of each pkt */ + bpf_u_int32 linktype; /* data link type (LINKTYPE_*) */ +}; + +/* + * Macros for the value returned by pcap_datalink_ext(). + * + * If LT_FCS_LENGTH_PRESENT(x) is true, the LT_FCS_LENGTH(x) macro + * gives the FCS length of packets in the capture. + */ +#define LT_FCS_LENGTH_PRESENT(x) ((x) & 0x04000000) +#define LT_FCS_LENGTH(x) (((x) & 0xF0000000) >> 28) +#define LT_FCS_DATALINK_EXT(x) ((((x) & 0xF) << 28) | 0x04000000) + +typedef enum { + PCAP_D_INOUT = 0, + PCAP_D_IN, + PCAP_D_OUT +} pcap_direction_t; + +/* + * Generic per-packet information, as supplied by libpcap. + * + * The time stamp can and should be a "struct timeval", regardless of + * whether your system supports 32-bit tv_sec in "struct timeval", + * 64-bit tv_sec in "struct timeval", or both if it supports both 32-bit + * and 64-bit applications. The on-disk format of savefiles uses 32-bit + * tv_sec (and tv_usec); this structure is irrelevant to that. 32-bit + * and 64-bit versions of libpcap, even if they're on the same platform, + * should supply the appropriate version of "struct timeval", even if + * that's not what the underlying packet capture mechanism supplies. + */ +struct pcap_pkthdr { + struct timeval ts; /* time stamp */ + bpf_u_int32 caplen; /* length of portion present */ + bpf_u_int32 len; /* length this packet (off wire) */ +}; + +/* + * As returned by the pcap_stats() + */ +struct pcap_stat { + u_int ps_recv; /* number of packets received */ + u_int ps_drop; /* number of packets dropped */ + u_int ps_ifdrop; /* drops by interface -- only supported on some platforms */ +#ifdef WIN32 + u_int bs_capt; /* number of packets that reach the application */ +#endif /* WIN32 */ +}; + +#ifdef MSDOS +/* + * As returned by the pcap_stats_ex() + */ +struct pcap_stat_ex { + u_long rx_packets; /* total packets received */ + u_long tx_packets; /* total packets transmitted */ + u_long rx_bytes; /* total bytes received */ + u_long tx_bytes; /* total bytes transmitted */ + u_long rx_errors; /* bad packets received */ + u_long tx_errors; /* packet transmit problems */ + u_long rx_dropped; /* no space in Rx buffers */ + u_long tx_dropped; /* no space available for Tx */ + u_long multicast; /* multicast packets received */ + u_long collisions; + + /* detailed rx_errors: */ + u_long rx_length_errors; + u_long rx_over_errors; /* receiver ring buff overflow */ + u_long rx_crc_errors; /* recv'd pkt with crc error */ + u_long rx_frame_errors; /* recv'd frame alignment error */ + u_long rx_fifo_errors; /* recv'r fifo overrun */ + u_long rx_missed_errors; /* recv'r missed packet */ + + /* detailed tx_errors */ + u_long tx_aborted_errors; + u_long tx_carrier_errors; + u_long tx_fifo_errors; + u_long tx_heartbeat_errors; + u_long tx_window_errors; + }; +#endif + +/* + * Item in a list of interfaces. + */ +struct pcap_if { + struct pcap_if *next; + char *name; /* name to hand to "pcap_open_live()" */ + char *description; /* textual description of interface, or NULL */ + struct pcap_addr *addresses; + bpf_u_int32 flags; /* PCAP_IF_ interface flags */ +}; + +#define PCAP_IF_LOOPBACK 0x00000001 /* interface is loopback */ + +/* + * Representation of an interface address. + */ +struct pcap_addr { + struct pcap_addr *next; + struct sockaddr *addr; /* address */ + struct sockaddr *netmask; /* netmask for that address */ + struct sockaddr *broadaddr; /* broadcast address for that address */ + struct sockaddr *dstaddr; /* P2P destination address for that address */ +}; + +typedef void (*pcap_handler)(u_char *, const struct pcap_pkthdr *, + const u_char *); + +/* + * Error codes for the pcap API. + * These will all be negative, so you can check for the success or + * failure of a call that returns these codes by checking for a + * negative value. + */ +#define PCAP_ERROR -1 /* generic error code */ +#define PCAP_ERROR_BREAK -2 /* loop terminated by pcap_breakloop */ +#define PCAP_ERROR_NOT_ACTIVATED -3 /* the capture needs to be activated */ +#define PCAP_ERROR_ACTIVATED -4 /* the operation can't be performed on already activated captures */ +#define PCAP_ERROR_NO_SUCH_DEVICE -5 /* no such device exists */ +#define PCAP_ERROR_RFMON_NOTSUP -6 /* this device doesn't support rfmon (monitor) mode */ +#define PCAP_ERROR_NOT_RFMON -7 /* operation supported only in monitor mode */ +#define PCAP_ERROR_PERM_DENIED -8 /* no permission to open the device */ +#define PCAP_ERROR_IFACE_NOT_UP -9 /* interface isn't up */ +#define PCAP_ERROR_CANTSET_TSTAMP_TYPE -10 /* this device doesn't support setting the time stamp type */ +#define PCAP_ERROR_PROMISC_PERM_DENIED -11 /* you don't have permission to capture in promiscuous mode */ + +/* + * Warning codes for the pcap API. + * These will all be positive and non-zero, so they won't look like + * errors. + */ +#define PCAP_WARNING 1 /* generic warning code */ +#define PCAP_WARNING_PROMISC_NOTSUP 2 /* this device doesn't support promiscuous mode */ +#define PCAP_WARNING_TSTAMP_TYPE_NOTSUP 3 /* the requested time stamp type is not supported */ + +/* + * Value to pass to pcap_compile() as the netmask if you don't know what + * the netmask is. + */ +#define PCAP_NETMASK_UNKNOWN 0xffffffff + +char *pcap_lookupdev(char *); +int pcap_lookupnet(const char *, bpf_u_int32 *, bpf_u_int32 *, char *); + +pcap_t *pcap_create(const char *, char *); +int pcap_set_snaplen(pcap_t *, int); +int pcap_set_promisc(pcap_t *, int); +int pcap_can_set_rfmon(pcap_t *); +int pcap_set_rfmon(pcap_t *, int); +int pcap_set_timeout(pcap_t *, int); +int pcap_set_tstamp_type(pcap_t *, int); +int pcap_set_buffer_size(pcap_t *, int); +int pcap_activate(pcap_t *); + +int pcap_list_tstamp_types(pcap_t *, int **); +void pcap_free_tstamp_types(int *); +int pcap_tstamp_type_name_to_val(const char *); +const char *pcap_tstamp_type_val_to_name(int); +const char *pcap_tstamp_type_val_to_description(int); + +/* + * Time stamp types. + * Not all systems and interfaces will necessarily support all of these. + * + * A system that supports PCAP_TSTAMP_HOST is offering time stamps + * provided by the host machine, rather than by the capture device, + * but not committing to any characteristics of the time stamp; + * it will not offer any of the PCAP_TSTAMP_HOST_ subtypes. + * + * PCAP_TSTAMP_HOST_LOWPREC is a time stamp, provided by the host machine, + * that's low-precision but relatively cheap to fetch; it's normally done + * using the system clock, so it's normally synchronized with times you'd + * fetch from system calls. + * + * PCAP_TSTAMP_HOST_HIPREC is a time stamp, provided by the host machine, + * that's high-precision; it might be more expensive to fetch. It might + * or might not be synchronized with the system clock, and might have + * problems with time stamps for packets received on different CPUs, + * depending on the platform. + * + * PCAP_TSTAMP_ADAPTER is a high-precision time stamp supplied by the + * capture device; it's synchronized with the system clock. + * + * PCAP_TSTAMP_ADAPTER_UNSYNCED is a high-precision time stamp supplied by + * the capture device; it's not synchronized with the system clock. + * + * Note that time stamps synchronized with the system clock can go + * backwards, as the system clock can go backwards. If a clock is + * not in sync with the system clock, that could be because the + * system clock isn't keeping accurate time, because the other + * clock isn't keeping accurate time, or both. + * + * Note that host-provided time stamps generally correspond to the + * time when the time-stamping code sees the packet; this could + * be some unknown amount of time after the first or last bit of + * the packet is received by the network adapter, due to batching + * of interrupts for packet arrival, queueing delays, etc.. + */ +#define PCAP_TSTAMP_HOST 0 /* host-provided, unknown characteristics */ +#define PCAP_TSTAMP_HOST_LOWPREC 1 /* host-provided, low precision */ +#define PCAP_TSTAMP_HOST_HIPREC 2 /* host-provided, high precision */ +#define PCAP_TSTAMP_ADAPTER 3 /* device-provided, synced with the system clock */ +#define PCAP_TSTAMP_ADAPTER_UNSYNCED 4 /* device-provided, not synced with the system clock */ + +pcap_t *pcap_open_live(const char *, int, int, int, char *); +pcap_t *pcap_open_dead(int, int); +pcap_t *pcap_open_offline(const char *, char *); +#if defined(WIN32) +pcap_t *pcap_hopen_offline(intptr_t, char *); +#if !defined(LIBPCAP_EXPORTS) +#define pcap_fopen_offline(f,b) \ + pcap_hopen_offline(_get_osfhandle(_fileno(f)), b) +#else /*LIBPCAP_EXPORTS*/ +static pcap_t *pcap_fopen_offline(FILE *, char *); +#endif +#else /*WIN32*/ +pcap_t *pcap_fopen_offline(FILE *, char *); +#endif /*WIN32*/ + +void pcap_close(pcap_t *); +int pcap_loop(pcap_t *, int, pcap_handler, u_char *); +int pcap_dispatch(pcap_t *, int, pcap_handler, u_char *); +const u_char* + pcap_next(pcap_t *, struct pcap_pkthdr *); +int pcap_next_ex(pcap_t *, struct pcap_pkthdr **, const u_char **); +void pcap_breakloop(pcap_t *); +int pcap_stats(pcap_t *, struct pcap_stat *); +int pcap_setfilter(pcap_t *, struct bpf_program *); +int pcap_setdirection(pcap_t *, pcap_direction_t); +int pcap_getnonblock(pcap_t *, char *); +int pcap_setnonblock(pcap_t *, int, char *); +int pcap_inject(pcap_t *, const void *, size_t); +int pcap_sendpacket(pcap_t *, const u_char *, int); +const char *pcap_statustostr(int); +const char *pcap_strerror(int); +char *pcap_geterr(pcap_t *); +void pcap_perror(pcap_t *, char *); +int pcap_compile(pcap_t *, struct bpf_program *, const char *, int, + bpf_u_int32); +int pcap_compile_nopcap(int, int, struct bpf_program *, + const char *, int, bpf_u_int32); +void pcap_freecode(struct bpf_program *); +int pcap_offline_filter(struct bpf_program *, const struct pcap_pkthdr *, + const u_char *); +int pcap_datalink(pcap_t *); +int pcap_datalink_ext(pcap_t *); +int pcap_list_datalinks(pcap_t *, int **); +int pcap_set_datalink(pcap_t *, int); +void pcap_free_datalinks(int *); +int pcap_datalink_name_to_val(const char *); +const char *pcap_datalink_val_to_name(int); +const char *pcap_datalink_val_to_description(int); +int pcap_snapshot(pcap_t *); +int pcap_is_swapped(pcap_t *); +int pcap_major_version(pcap_t *); +int pcap_minor_version(pcap_t *); + +/* XXX */ +FILE *pcap_file(pcap_t *); +int pcap_fileno(pcap_t *); + +pcap_dumper_t *pcap_dump_open(pcap_t *, const char *); +pcap_dumper_t *pcap_dump_fopen(pcap_t *, FILE *fp); +FILE *pcap_dump_file(pcap_dumper_t *); +long pcap_dump_ftell(pcap_dumper_t *); +int pcap_dump_flush(pcap_dumper_t *); +void pcap_dump_close(pcap_dumper_t *); +void pcap_dump(u_char *, const struct pcap_pkthdr *, const u_char *); + +int pcap_findalldevs(pcap_if_t **, char *); +void pcap_freealldevs(pcap_if_t *); + +const char *pcap_lib_version(void); + +/* + * On at least some versions of NetBSD, we don't want to declare + * bpf_filter() here, as it's also be declared in , with a + * different signature, but, on other BSD-flavored UN*Xes, it's not + * declared in , so we *do* want to declare it here, so it's + * declared when we build pcap-bpf.c. + */ +#ifndef __NetBSD__ +u_int bpf_filter(const struct bpf_insn *, const u_char *, u_int, u_int); +#endif +int bpf_validate(const struct bpf_insn *f, int len); +char *bpf_image(const struct bpf_insn *, int); +void bpf_dump(const struct bpf_program *, int); + +#if defined(WIN32) + +/* + * Win32 definitions + */ + +int pcap_setbuff(pcap_t *p, int dim); +int pcap_setmode(pcap_t *p, int mode); +int pcap_setmintocopy(pcap_t *p, int size); + +#ifdef WPCAP +/* Include file with the wpcap-specific extensions */ +#include +#endif /* WPCAP */ + +#define MODE_CAPT 0 +#define MODE_STAT 1 +#define MODE_MON 2 + +#elif defined(MSDOS) + +/* + * MS-DOS definitions + */ + +int pcap_stats_ex (pcap_t *, struct pcap_stat_ex *); +void pcap_set_wait (pcap_t *p, void (*yield)(void), int wait); +u_long pcap_mac_packets (void); + +#else /* UN*X */ + +/* + * UN*X definitions + */ + +int pcap_get_selectable_fd(pcap_t *); + +#endif /* WIN32/MSDOS/UN*X */ + +#ifdef __cplusplus +} +#endif + +#endif /* lib_pcap_pcap_h */ diff --git a/pcap/sll.h b/pcap/sll.h new file mode 100644 index 0000000..7ad811d --- /dev/null +++ b/pcap/sll.h @@ -0,0 +1,129 @@ +/*- + * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from the Stanford/CMU enet packet filter, + * (net/enet.c) distributed as part of 4.3BSD, and code contributed + * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence + * Berkeley Laboratory. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#) $Header: /tcpdump/master/libpcap/pcap/sll.h,v 1.3 2008-05-30 01:35:33 guy Exp $ (LBL) + */ + +/* + * For captures on Linux cooked sockets, we construct a fake header + * that includes: + * + * a 2-byte "packet type" which is one of: + * + * LINUX_SLL_HOST packet was sent to us + * LINUX_SLL_BROADCAST packet was broadcast + * LINUX_SLL_MULTICAST packet was multicast + * LINUX_SLL_OTHERHOST packet was sent to somebody else + * LINUX_SLL_OUTGOING packet was sent *by* us; + * + * a 2-byte Ethernet protocol field; + * + * a 2-byte link-layer type; + * + * a 2-byte link-layer address length; + * + * an 8-byte source link-layer address, whose actual length is + * specified by the previous value. + * + * All fields except for the link-layer address are in network byte order. + * + * DO NOT change the layout of this structure, or change any of the + * LINUX_SLL_ values below. If you must change the link-layer header + * for a "cooked" Linux capture, introduce a new DLT_ type (ask + * "tcpdump-workers@lists.tcpdump.org" for one, so that you don't give it + * a value that collides with a value already being used), and use the + * new header in captures of that type, so that programs that can + * handle DLT_LINUX_SLL captures will continue to handle them correctly + * without any change, and so that capture files with different headers + * can be told apart and programs that read them can dissect the + * packets in them. + */ + +#ifndef lib_pcap_sll_h +#define lib_pcap_sll_h + +/* + * A DLT_LINUX_SLL fake link-layer header. + */ +#define SLL_HDR_LEN 16 /* total header length */ +#define SLL_ADDRLEN 8 /* length of address field */ + +struct sll_header { + u_int16_t sll_pkttype; /* packet type */ + u_int16_t sll_hatype; /* link-layer address type */ + u_int16_t sll_halen; /* link-layer address length */ + u_int8_t sll_addr[SLL_ADDRLEN]; /* link-layer address */ + u_int16_t sll_protocol; /* protocol */ +}; + +/* + * The LINUX_SLL_ values for "sll_pkttype"; these correspond to the + * PACKET_ values on Linux, but are defined here so that they're + * available even on systems other than Linux, and so that they + * don't change even if the PACKET_ values change. + */ +#define LINUX_SLL_HOST 0 +#define LINUX_SLL_BROADCAST 1 +#define LINUX_SLL_MULTICAST 2 +#define LINUX_SLL_OTHERHOST 3 +#define LINUX_SLL_OUTGOING 4 + +/* + * The LINUX_SLL_ values for "sll_protocol"; these correspond to the + * ETH_P_ values on Linux, but are defined here so that they're + * available even on systems other than Linux. We assume, for now, + * that the ETH_P_ values won't change in Linux; if they do, then: + * + * if we don't translate them in "pcap-linux.c", capture files + * won't necessarily be readable if captured on a system that + * defines ETH_P_ values that don't match these values; + * + * if we do translate them in "pcap-linux.c", that makes life + * unpleasant for the BPF code generator, as the values you test + * for in the kernel aren't the values that you test for when + * reading a capture file, so the fixup code run on BPF programs + * handed to the kernel ends up having to do more work. + * + * Add other values here as necessary, for handling packet types that + * might show up on non-Ethernet, non-802.x networks. (Not all the ones + * in the Linux "if_ether.h" will, I suspect, actually show up in + * captures.) + */ +#define LINUX_SLL_P_802_3 0x0001 /* Novell 802.3 frames without 802.2 LLC header */ +#define LINUX_SLL_P_802_2 0x0004 /* 802.2 frames (not D/I/X Ethernet) */ + +#endif diff --git a/pcap/usb.h b/pcap/usb.h new file mode 100644 index 0000000..aa35122 --- /dev/null +++ b/pcap/usb.h @@ -0,0 +1,143 @@ +/* + * Copyright (c) 2006 Paolo Abeni (Italy) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Basic USB data struct + * By Paolo Abeni + * + * @(#) $Header: /tcpdump/master/libpcap/pcap/usb.h,v 1.9 2008-12-23 20:13:29 guy Exp $ + */ + +#ifndef _PCAP_USB_STRUCTS_H__ +#define _PCAP_USB_STRUCTS_H__ + +/* + * possible transfer mode + */ +#define URB_TRANSFER_IN 0x80 +#define URB_ISOCHRONOUS 0x0 +#define URB_INTERRUPT 0x1 +#define URB_CONTROL 0x2 +#define URB_BULK 0x3 + +/* + * possible event type + */ +#define URB_SUBMIT 'S' +#define URB_COMPLETE 'C' +#define URB_ERROR 'E' + +/* + * USB setup header as defined in USB specification. + * Appears at the front of each Control S-type packet in DLT_USB captures. + */ +typedef struct _usb_setup { + u_int8_t bmRequestType; + u_int8_t bRequest; + u_int16_t wValue; + u_int16_t wIndex; + u_int16_t wLength; +} pcap_usb_setup; + +/* + * Information from the URB for Isochronous transfers. + */ +typedef struct _iso_rec { + int32_t error_count; + int32_t numdesc; +} iso_rec; + +/* + * Header prepended by linux kernel to each event. + * Appears at the front of each packet in DLT_USB_LINUX captures. + */ +typedef struct _usb_header { + u_int64_t id; + u_int8_t event_type; + u_int8_t transfer_type; + u_int8_t endpoint_number; + u_int8_t device_address; + u_int16_t bus_id; + char setup_flag;/*if !=0 the urb setup header is not present*/ + char data_flag; /*if !=0 no urb data is present*/ + int64_t ts_sec; + int32_t ts_usec; + int32_t status; + u_int32_t urb_len; + u_int32_t data_len; /* amount of urb data really present in this event*/ + pcap_usb_setup setup; +} pcap_usb_header; + +/* + * Header prepended by linux kernel to each event for the 2.6.31 + * and later kernels; for the 2.6.21 through 2.6.30 kernels, the + * "iso_rec" information, and the fields starting with "interval" + * are zeroed-out padding fields. + * + * Appears at the front of each packet in DLT_USB_LINUX_MMAPPED captures. + */ +typedef struct _usb_header_mmapped { + u_int64_t id; + u_int8_t event_type; + u_int8_t transfer_type; + u_int8_t endpoint_number; + u_int8_t device_address; + u_int16_t bus_id; + char setup_flag;/*if !=0 the urb setup header is not present*/ + char data_flag; /*if !=0 no urb data is present*/ + int64_t ts_sec; + int32_t ts_usec; + int32_t status; + u_int32_t urb_len; + u_int32_t data_len; /* amount of urb data really present in this event*/ + union { + pcap_usb_setup setup; + iso_rec iso; + } s; + int32_t interval; /* for Interrupt and Isochronous events */ + int32_t start_frame; /* for Isochronous events */ + u_int32_t xfer_flags; /* copy of URB's transfer flags */ + u_int32_t ndesc; /* number of isochronous descriptors */ +} pcap_usb_header_mmapped; + +/* + * Isochronous descriptors; for isochronous transfers there might be + * one or more of these at the beginning of the packet data. The + * number of descriptors is given by the "ndesc" field in the header; + * as indicated, in older kernels that don't put the descriptors at + * the beginning of the packet, that field is zeroed out, so that field + * can be trusted even in captures from older kernels. + */ +typedef struct _usb_isodesc { + int32_t status; + u_int32_t offset; + u_int32_t len; + u_int8_t pad[4]; +} usb_isodesc; + +#endif diff --git a/pcap/vlan.h b/pcap/vlan.h new file mode 100644 index 0000000..41aa8c7 --- /dev/null +++ b/pcap/vlan.h @@ -0,0 +1,46 @@ +/*- + * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#) $Header: /tcpdump/master/libpcap/pcap/vlan.h,v 1.1 2008-08-06 07:45:00 guy Exp $ + */ + +#ifndef lib_pcap_vlan_h +#define lib_pcap_vlan_h + +struct vlan_tag { + u_int16_t vlan_tpid; /* ETH_P_8021Q */ + u_int16_t vlan_tci; /* VLAN TCI */ +}; + +#define VLAN_TAG_LEN 4 + +#endif diff --git a/pcap_activate.3pcap b/pcap_activate.3pcap new file mode 100644 index 0000000..f963d35 --- /dev/null +++ b/pcap_activate.3pcap @@ -0,0 +1,97 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_activate.3pcap,v 1.5 2008-07-01 08:02:33 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_ACTIVATE 3PCAP "5 April 2008" +.SH NAME +pcap_activate \- activate a capture handle +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_activate(pcap_t *p); +.ft +.fi +.SH DESCRIPTION +.B pcap_activate() +is used to activate a packet capture handle to look +at packets on the network, with the options that were set on the handle +being in effect. +.SH RETURN VALUE +.B pcap_activate() +returns 0 on success without warnings, +.B PCAP_WARNING_PROMISC_NOTSUP +on success on a device that doesn't support promiscuous mode if +promiscuous mode was requested, +.B PCAP_WARNING_TSTAMP_TYPE_NOTSUP +on success if the time stamp type specified in a previous +.B pcap_set_tstamp_type() +call isn't supported by the capture source (the time stamp type is +left as the default), +.B PCAP_WARNING +on success with any other warning, +.B PCAP_ERROR_ACTIVATED +if the handle has already been activated, +.B PCAP_ERROR_NO_SUCH_DEVICE +if the capture source specified when the handle was created doesn't +exist, +.B PCAP_ERROR_PERM_DENIED +if the process doesn't have permission to open the capture source, +.B PCAP_ERROR_PROMISC_PERM_DENIED +if the process has permission to open the capture source but doesn't +have permission to put it into promiscuous mode, +.B PCAP_ERROR_RFMON_NOTSUP +if monitor mode was specified but the capture source doesn't support +monitor mode, +.B PCAP_ERROR_IFACE_NOT_UP +if the capture source is not up, and +.B PCAP_ERROR +if another error occurred. +If +.B PCAP_WARNING +or +.B PCAP_ERROR +is returned, +.B pcap_geterr() +or +.B pcap_perror() +may be called with +.I p +as an argument to fetch or display a message describing the warning or +error. +If +.BR PCAP_WARNING_PROMISC_NOTSUP , +.BR PCAP_ERROR_NO_SUCH_DEVICE , +or +.B PCAP_ERROR_PERM_DENIED +is returned, +.B pcap_geterr() +or +.B pcap_perror() +may be called with +.I p +as an argument to fetch or display an message giving additional details +about the problem that might be useful for debugging the problem if it's +unexpected. +.SH SEE ALSO +pcap(3PCAP) diff --git a/pcap_breakloop.3pcap b/pcap_breakloop.3pcap new file mode 100644 index 0000000..2372348 --- /dev/null +++ b/pcap_breakloop.3pcap @@ -0,0 +1,105 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_breakloop.3pcap,v 1.3 2008-04-06 02:53:21 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_BREAKLOOP 3PCAP "5 April 2008" +.SH NAME +pcap_breakloop \- force a pcap_dispatch() or pcap_loop() call to return +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +void pcap_breakloop(pcap_t *); +.ft +.fi +.SH DESCRIPTION +.B pcap_breakloop() +sets a flag that will force +.B pcap_dispatch() +or +.B pcap_loop() +to return rather than looping; they will return the number of packets +that have been processed so far, or \-2 if no packets have been +processed so far. +.PP +This routine is safe to use inside a signal handler on UNIX or a console +control handler on Windows, as it merely sets a flag that is checked +within the loop. +.PP +The flag is checked in loops reading packets from the OS - a signal by +itself will not necessarily terminate those loops - as well as in loops +processing a set of packets returned by the OS. +.ft B +Note that if you are catching signals on UNIX systems that support +restarting system calls after a signal, and calling pcap_breakloop() +in the signal handler, you must specify, when catching those signals, +that system calls should NOT be restarted by that signal. Otherwise, +if the signal interrupted a call reading packets in a live capture, +when your signal handler returns after calling pcap_breakloop(), the +call will be restarted, and the loop will not terminate until more +packets arrive and the call completes. +.PP +Note also that, in a multi-threaded application, if one thread is +blocked in +.BR pcap_dispatch() , +.BR pcap_loop() , +.BR pcap_next() , +or +.BR pcap_next_ex() , +a call to +.B pcap_breakloop() +in a different thread will not unblock that thread; you will need to use +whatever mechanism the OS provides for breaking a thread out of blocking +calls in order to unblock the thread, such as thread cancellation in +systems that support POSIX threads. +.ft R +.PP +Note that +.B pcap_next() +and +.B pcap_next_ex() +will, on some platforms, loop reading packets from the OS; that loop +will not necessarily be terminated by a signal, so +.B pcap_breakloop() +should be used to terminate packet processing even if +.B pcap_next() +or +.B pcap_next_ex() +is being used. +.PP +.B pcap_breakloop() +does not guarantee that no further packets will be processed by +.B pcap_dispatch() +or +.B pcap_loop() +after it is called; at most one more packet might be processed. +.PP +If \-2 is returned from +.B pcap_dispatch() +or +.BR pcap_loop() , +the flag is cleared, so a subsequent call will resume reading packets. +If a positive number is returned, the flag is not cleared, so a +subsequent call will return \-2 and clear the flag. +.SH SEE ALSO +pcap(3PCAP), pcap_loop(3PCAP), pcap_next_ex(3PCAP) diff --git a/pcap_can_set_rfmon.3pcap b/pcap_can_set_rfmon.3pcap new file mode 100644 index 0000000..00b92a4 --- /dev/null +++ b/pcap_can_set_rfmon.3pcap @@ -0,0 +1,64 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_can_set_rfmon.3pcap,v 1.1 2008-04-06 02:53:21 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_CAN_SET_RFMON 3PCAP "18 May 2010" +.SH NAME +pcap_can_set_rfmon \- check whether monitor mode can be set for a +not-yet-activated capture handle +.SH SYNOPSIS +.nf +.ft B +#include +.LP +.ft B +int pcap_can_set_rfmon(pcap_t *p); +.ft +.fi +.SH DESCRIPTION +.B pcap_can_set_rfmon() +checks whether monitor mode could be set on a capture handle when +the handle is activated. +.SH RETURN VALUE +.B pcap_can_set_rfmon() +returns 0 if monitor mode could not be set, +1 if monitor mode could be set, +.B PCAP_ERROR_NO_SUCH_DEVICE +if the capture source specified when the handle was created doesn't +exist, +.B PCAP_ERROR_PERM_DENIED +if the process doesn't have permission to check whether monitor mode +could be supported, +.B PCAP_ERROR_ACTIVATED +if called on a capture handle that has been activated, or +.B PCAP_ERROR +if an error occurred. +If +.B PCAP_ERROR +is returned, +.B pcap_geterr() +or +.B pcap_perror() +may be called with +.I p +as an argument to fetch or display the error text. +.SH SEE ALSO +pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP), +pcap_set_rfmon(3PCAP) diff --git a/pcap_close.3pcap b/pcap_close.3pcap new file mode 100644 index 0000000..810664d --- /dev/null +++ b/pcap_close.3pcap @@ -0,0 +1,41 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_close.3pcap,v 1.3 2008-04-06 02:53:21 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_CLOSE 3PCAP "5 April 2008" +.SH NAME +pcap_close \- close a capture device or savefile +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +void pcap_close(pcap_t *p); +.ft +.fi +.SH DESCRIPTION +.B pcap_close() +closes the files associated with +.I p +and deallocates resources. +.SH SEE ALSO +pcap(3PCAP) diff --git a/pcap_compile.3pcap.in b/pcap_compile.3pcap.in new file mode 100644 index 0000000..7dbdad5 --- /dev/null +++ b/pcap_compile.3pcap.in @@ -0,0 +1,72 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_compile.3pcap.in,v 1.1 2008-10-21 07:33:02 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_COMPILE 3PCAP "5 April 2008" +.SH NAME +pcap_compile \- compile a filter expression +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_compile(pcap_t *p, struct bpf_program *fp, +.ti +8 +const char *str, int optimize, bpf_u_int32 netmask); +.ft +.fi +.SH DESCRIPTION +.B pcap_compile() +is used to compile the string +.I str +into a filter program. See +.BR pcap-filter (@MAN_MISC_INFO@) +for the syntax of that string. +.I program +is a pointer to a +.I bpf_program +struct and is filled in by +.BR pcap_compile() . +.I optimize +controls whether optimization on the resulting code is performed. +.I netmask +specifies the IPv4 netmask of the network on which packets are being +captured; it is used only when checking for IPv4 broadcast addresses in +the filter program. If the netmask of the network on which packets are +being captured isn't known to the program, or if packets are being +captured on the Linux "any" pseudo-interface that can capture on more +than one network, a value of PCAP_NETMASK_UNKNOWN can be supplied; tests +for IPv4 broadcast addresses will fail to compile, but all other tests in +the filter program will be OK. +.SH RETURN VALUE +.B pcap_compile() +returns 0 on success and \-1 on failure. +If \-1 is returned, +.B pcap_geterr() +or +.B pcap_perror() +may be called with +.I p +as an argument to fetch or display the error text. +.SH SEE ALSO +pcap(3PCAP), pcap_setfilter(3PCAP), pcap_freecode(3PCAP), +pcap_geterr(3PCAP), pcap-filter(@MAN_MISC_INFO@) diff --git a/pcap_create.3pcap b/pcap_create.3pcap new file mode 100644 index 0000000..153f9fd --- /dev/null +++ b/pcap_create.3pcap @@ -0,0 +1,74 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_create.3pcap,v 1.1 2008-04-06 02:53:21 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_CREATE 3PCAP "5 April 2008" +.SH NAME +pcap_create \- create a live capture handle +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.nf +.ft B +char errbuf[PCAP_ERRBUF_SIZE]; +.ft +.LP +.ft B +pcap_t *pcap_create(const char *source, char *errbuf); +.ft +.fi +.SH DESCRIPTION +.B pcap_create() +is used to create a packet capture handle to look +at packets on the network. +.I source +is a string that specifies the network device to open; on Linux systems +with 2.2 or later kernels, a +.I source +argument of "any" or +.B NULL +can be used to capture packets from all interfaces. +.PP +The returned handle must be activated with +.B pcap_activate() +before packets can be captured +with it; options for the capture, such as promiscuous mode, can be set +on the handle before activating it. +.SH RETURN VALUE +.B pcap_create() +returns a +.I pcap_t * +on success and +.B NULL +on failure. +If +.B NULL +is returned, +.I errbuf +is filled in with an appropriate error message. +.I errbuf +is assumed to be able to hold at least +.B PCAP_ERRBUF_SIZE +chars. +.SH SEE ALSO +pcap(3PCAP), pcap_activate(3PCAP) diff --git a/pcap_datalink.3pcap.in b/pcap_datalink.3pcap.in new file mode 100644 index 0000000..3d4ace1 --- /dev/null +++ b/pcap_datalink.3pcap.in @@ -0,0 +1,41 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_datalink.3pcap.in,v 1.1 2008-10-21 07:33:02 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_DATALINK 3PCAP "22 August 2010" +.SH NAME +pcap_datalink \- get the link-layer header type +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_datalink(pcap_t *p); +.ft +.fi +.SH DESCRIPTION +.B pcap_datalink() +returns the link-layer header type for the live capture or ``savefile'' +specified by +.IR p . +.SH SEE ALSO +pcap(3PCAP), pcap-linktype(@MAN_MISC_INFO@) diff --git a/pcap_datalink_name_to_val.3pcap b/pcap_datalink_name_to_val.3pcap new file mode 100644 index 0000000..9c8e18a --- /dev/null +++ b/pcap_datalink_name_to_val.3pcap @@ -0,0 +1,48 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_datalink_name_to_val.3pcap,v 1.3 2008-04-06 02:53:21 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_DATALINK_NAME_TO_VAL 3PCAP "22 August 2010" +.SH NAME +pcap_datalink_name_to_val \- get the link-layer header type value +corresponding to a header type name +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_datalink_name_to_val(const char *name); +.ft +.fi +.SH DESCRIPTION +.B pcap_datalink_name_to_val() +translates a link-layer header type name, which is a +.B DLT_ +name with the +.B DLT_ +removed, to the corresponding link-layer header type value. The +translation is case-insensitive. +.SH RETURN VALUE +.B pcap_datalink_name_to_val() +returns 0 on success and \-1 on failure. +.SH SEE ALSO +pcap(3PCAP) diff --git a/pcap_datalink_val_to_name.3pcap b/pcap_datalink_val_to_name.3pcap new file mode 100644 index 0000000..26397fa --- /dev/null +++ b/pcap_datalink_val_to_name.3pcap @@ -0,0 +1,44 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_datalink_val_to_name.3pcap,v 1.3 2008-12-24 21:45:25 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_DATALINK_VAL_TO_NAME 3PCAP "22 August 2010" +.SH NAME +pcap_datalink_val_to_name, pcap_datalink_val_to_description \- get a +name or description for a link-layer header type value +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +const char *pcap_datalink_val_to_name(int dlt); +const char *pcap_datalink_val_to_description(int dlt); +.ft +.fi +.SH DESCRIPTION +.B pcap_datalink_val_to_name() +translates a link-layer header type value to the corresponding +link-layer header type name. NULL is returned on failure. +.PP +.B pcap_datalink_val_to_description() +translates a link-layer header type value to a short description of that +link-layer header type. NULL is returned on failure. diff --git a/pcap_dump.3pcap b/pcap_dump.3pcap new file mode 100644 index 0000000..1ccd82a --- /dev/null +++ b/pcap_dump.3pcap @@ -0,0 +1,53 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_dump.3pcap,v 1.3 2008-04-06 02:53:21 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_DUMP 3PCAP "5 April 2008" +.SH NAME +pcap_dump \- write a packet to a capture file +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +void pcap_dump(u_char *user, struct pcap_pkthdr *h, +.ti +8 +u_char *sp); +.ft +.fi +.SH DESCRIPTION +.B pcap_dump() +outputs a packet to the ``savefile'' opened with +.BR pcap_dump_open() . +Note that its calling arguments are suitable for use with +.B pcap_dispatch() +or +.BR pcap_loop() . +If called directly, the +.I user +parameter is of type +.B pcap_dumper_t +as returned by +.BR pcap_dump_open() . +.SH SEE ALSO +pcap(3PCAP), pcap_dump_open(3PCAP), pcap_dispatch(3PCAP), +pcap_loop(3PCAP) diff --git a/pcap_dump_close.3pcap b/pcap_dump_close.3pcap new file mode 100644 index 0000000..4ed820b --- /dev/null +++ b/pcap_dump_close.3pcap @@ -0,0 +1,39 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_dump_close.3pcap,v 1.3 2008-04-06 02:53:21 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_DUMP_CLOSE 3PCAP "5 April 2008" +.SH NAME +pcap_dump_close \- close a savefile being written to +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +void pcap_dump_close(pcap_dumper_t *p); +.ft +.fi +.SH DESCRIPTION +.B pcap_dump_close() +closes the ``savefile.'' +.SH SEE ALSO +pcap(3PCAP), pcap_dump_open(3PCAP), pcap_dump(3PCAP) diff --git a/pcap_dump_file.3pcap b/pcap_dump_file.3pcap new file mode 100644 index 0000000..9e51a2a --- /dev/null +++ b/pcap_dump_file.3pcap @@ -0,0 +1,40 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_dump_file.3pcap,v 1.3 2008-04-06 02:53:21 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_DUMP_FILE 3PCAP "5 April 2008" +.SH NAME +pcap_dump_file \- get the standard I/O stream for a savefile being written +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +FILE *pcap_dump_file(pcap_dumper_t *p); +.ft +.fi +.SH DESCRIPTION +.B pcap_dump_file() +returns the standard I/O stream of the ``savefile'' opened by +.BR pcap_dump_open() . +.SH SEE ALSO +pcap(3PCAP) diff --git a/pcap_dump_flush.3pcap b/pcap_dump_flush.3pcap new file mode 100644 index 0000000..b553883 --- /dev/null +++ b/pcap_dump_flush.3pcap @@ -0,0 +1,45 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_dump_flush.3pcap,v 1.3 2008-04-06 02:53:21 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_DUMP_FLUSH 3PCAP "5 April 2008" +.SH NAME +pcap_dump_flush \- flush to a savefile packets dumped +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_dump_flush(pcap_dumper_t *p); +.ft +.fi +.SH DESCRIPTION +.B pcap_dump_flush() +flushes the output buffer to the ``savefile,'' so that any packets +written with +.B pcap_dump() +but not yet written to the ``savefile'' will be written. +.SH RETURN VALUE +.B pcap_dump_flush() +returns 0 on success and \-1 on failure. +.SH SEE ALSO +pcap(3PCAP), pcap_dump_open(3PCAP), pcap_dump(3PCAP) diff --git a/pcap_dump_ftell.3pcap b/pcap_dump_ftell.3pcap new file mode 100644 index 0000000..1d0f96f --- /dev/null +++ b/pcap_dump_ftell.3pcap @@ -0,0 +1,44 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_dump_ftell.3pcap,v 1.3 2008-04-06 02:53:21 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_DUMP_FTELL 3PCAP "5 April 2008" +.SH NAME +pcap_dump_ftell \- get the current file offset for a savefile being written +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +long pcap_dump_ftell(pcap_dumper_t *p); +.ft +.fi +.SH DESCRIPTION +.B pcap_dump_ftell() +returns the current file position for the ``savefile'', representing the +number of bytes written by +.B pcap_dump_open() +and +.BR pcap_dump() . +\-1 is returned on error. +.SH SEE ALSO +pcap(3PCAP), pcap_dump_open(3PCAP), pcap_dump(3PCAP) diff --git a/pcap_dump_open.3pcap.in b/pcap_dump_open.3pcap.in new file mode 100644 index 0000000..2a5dc9d --- /dev/null +++ b/pcap_dump_open.3pcap.in @@ -0,0 +1,87 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_dump_open.3pcap.in,v 1.1 2008-10-23 05:56:59 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_DUMP_OPEN 3PCAP "5 April 2008" +.SH NAME +pcap_dump_open, pcap_dump_fopen \- open a file to which to write packets +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.nf +.LP +.ft B +pcap_dumper_t *pcap_dump_open(pcap_t *p, const char *fname); +pcap_dumper_t *pcap_dump_fopen(pcap_t *p, FILE *fp); +.ft +.fi +.SH DESCRIPTION +.B pcap_dump_open() +is called to open a ``savefile'' for writing. +.I fname +specifies the name of the file to open. The file will have +the same format as those used by +.BR tcpdump (1) +and +.BR tcpslice (1). +The name "-" in a synonym +for +.BR stdout . +.PP +.B pcap_dump_fopen() +is called to write data to an existing open stream +.IR fp . +Note that on Windows, that stream should be opened in binary mode. +.PP +.I p +is a capture or ``savefile'' handle returned by an earlier call to +.B pcap_create() +and activated by an earlier call to +.BR pcap_activate() , +or returned by an earlier call to +.BR pcap_open_offline() , +.BR pcap_open_live() , +or +.BR pcap_open_dead() . +The link-layer type and snapshot length from +.I p +are used as the link-layer type and snapshot length of the output file. +.SH RETURN VALUES +A pointer to a +.B pcap_dumper_t +structure to use in subsequent +.B pcap_dump() +and +.B pcap_dump_close() +calls is returned on success. +.B NULL +is returned on failure. +If +.B NULL +is returned, +.B pcap_geterr(\fIp\fB) +can be used to get the error text. +.SH SEE ALSO +pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP), +pcap_open_offline(3PCAP), pcap_open_live(3PCAP), pcap_open_dead(3PCAP), +pcap_dump(3PCAP), pcap_dump_close(3PCAP), pcap_geterr(3PCAP), +pcap-savefile(@MAN_FILE_FORMATS@) diff --git a/pcap_file.3pcap b/pcap_file.3pcap new file mode 100644 index 0000000..1471ab6 --- /dev/null +++ b/pcap_file.3pcap @@ -0,0 +1,59 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_file.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_FILE 3PCAP "5 April 2008" +.SH NAME +pcap_file \- get the standard I/O stream for a savefile being read +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +FILE *pcap_file(pcap_t *p); +.ft +.fi +.SH DESCRIPTION +.B pcap_file() +returns the standard I/O stream of the ``savefile,'' if a ``savefile'' +was opened with +.BR pcap_open_offline() , +or NULL, if a network device was opened with +.B pcap_create() +and +.BR pcap_activate() , +or with +.BR pcap_open_live() . +.PP +Note that the Packet Capture library is usually built with large file +support, so the standard I/O stream of the ``savefile'' might refer to +a file larger than 2 gigabytes; applications that use +.B pcap_file() +should, if possible, use calls that support large files on the return +value of +.B pcap_file() +or the value returned by +.B fileno() +when passed the return value of +.BR pcap_file() . +.SH SEE ALSO +pcap(3PCAP), pcap_open_offline(3PCAP) diff --git a/pcap_fileno.3pcap b/pcap_fileno.3pcap new file mode 100644 index 0000000..723733e --- /dev/null +++ b/pcap_fileno.3pcap @@ -0,0 +1,68 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_fileno.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_FILENO 3PCAP "5 April 2008" +.SH NAME +pcap_fileno \- get the file descriptor for a live capture +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_fileno(pcap_t *p); +.ft +.fi +.SH DESCRIPTION +If +.I p +refers to a network device that was opened for a live capture using +a combination of +.B pcap_create() +and +.BR pcap_activate() , +or using +.BR pcap_open_live() , +.B pcap_fileno() +returns the file descriptor from which captured packets are read. +.LP +If +.I p +refers to a ``savefile'' that was opened using functions such as +.BR pcap_open_offline() +or +.BR pcap_fopen_offline() , +a ``dead'' +.B pcap_t +opened using +.BR pcap_open_dead() , +or a +.B pcap_t +that was created with +.B pcap_create() +but that has not yet been activated with +.BR pcap_activate() , +it returns \-1. +.SH SEE ALSO +pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP), +pcap_open_live(3PCAP), pcap_open_offline(3PCAP), +pcap_fopen_offline(3PCAP), pcap_open_dead(3PCAP) diff --git a/pcap_findalldevs.3pcap b/pcap_findalldevs.3pcap new file mode 100644 index 0000000..2e56d09 --- /dev/null +++ b/pcap_findalldevs.3pcap @@ -0,0 +1,186 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_findalldevs.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_FINDALLDEVS 3PCAP "22 August 2010" +.SH NAME +pcap_findalldevs, pcap_freealldevs \- get a list of capture devices, and +free that list +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.nf +.ft B +char errbuf[PCAP_ERRBUF_SIZE]; +.ft +.LP +.ft B +int pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf); +void pcap_freealldevs(pcap_if_t *alldevs); +.ft +.fi +.SH DESCRIPTION +.B pcap_findalldevs() +constructs a list of network devices that can be opened with +.B pcap_create() +and +.B pcap_activate() +or with +.BR pcap_open_live() . +(Note that there may be network devices that cannot be opened by the +process calling +.BR pcap_findalldevs() , +because, for example, that process does not have sufficient privileges +to open them for capturing; if so, those devices will not appear on the +list.) +If +.B pcap_findalldevs() +succeeds, the pointer pointed to by +.I alldevsp +is set to point to the first element of the list, or to +.B NULL +if no devices were found (this is considered success). +Each element of the list is of type +.BR pcap_if_t , +and has the following members: +.RS +.TP +.B next +if not +.BR NULL , +a pointer to the next element in the list; +.B NULL +for the last element of the list +.TP +.B name +a pointer to a string giving a name for the device to pass to +.B pcap_open_live() +.TP +.B description +if not +.BR NULL , +a pointer to a string giving a human-readable description of the device +.TP +.B addresses +a pointer to the first element of a list of network addresses for the +device, +or +.B NULL +if the device has no addresses +.TP +.B flags +device flags: +.RS +.TP +.B PCAP_IF_LOOPBACK +set if the device is a loopback interface +.RE +.RE +.PP +Each element of the list of addresses is of type +.BR pcap_addr_t , +and has the following members: +.RS +.TP +.B next +if not +.BR NULL , +a pointer to the next element in the list; +.B NULL +for the last element of the list +.TP +.B addr +a pointer to a +.B "struct sockaddr" +containing an address +.TP +.B netmask +if not +.BR NULL , +a pointer to a +.B "struct sockaddr" +that contains the netmask corresponding to the address pointed to by +.B addr +.TP +.B broadaddr +if not +.BR NULL , +a pointer to a +.B "struct sockaddr" +that contains the broadcast address corresponding to the address pointed +to by +.BR addr ; +may be null if the device doesn't support broadcasts +.TP +.B dstaddr +if not +.BR NULL , +a pointer to a +.B "struct sockaddr" +that contains the destination address corresponding to the address pointed +to by +.BR addr ; +may be null if the device isn't a point-to-point interface +.RE +.PP +Note that the addresses in the list of addresses might be IPv4 +addresses, IPv6 addresses, or some other type of addresses, so you must +check the +.B sa_family +member of the +.B "struct sockaddr" +before interpreting the contents of the address; do not assume that the +addresses are all IPv4 addresses, or even all IPv4 or IPv6 addresses. +IPv4 addresses have the value +.BR AF_INET , +IPv6 addresses have the value +.B AF_INET6 +(which older operating systems that don't support IPv6 might not +define), and other addresses have other values. Whether other addresses +are returned, and what types they might have is platform-dependent. +For IPv4 addresses, the +.B "struct sockaddr" +pointer can be interpreted as if it pointed to a +.BR "struct sockaddr_in" ; +for IPv6 addresses, it can be interpreted as if it pointed to a +.BR "struct sockaddr_in6". +.PP +The list of devices must be freed with +.BR pcap_freealldevs() , +whch frees the list pointed to by +.IR alldevs . +.SH RETURN VALUE +.B pcap_findalldevs() +returns 0 on success and \-1 on failure; as indicated, finding no +devices is considered success, rather than failure, so 0 will be +returned in that case. +If \-1 is returned, +.I errbuf +is filled in with an appropriate error message. +.I errbuf +is assumed to be able to hold at least +.B PCAP_ERRBUF_SIZE +chars. +.SH SEE ALSO +pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP), +pcap_open_live(3PCAP) diff --git a/pcap_freecode.3pcap b/pcap_freecode.3pcap new file mode 100644 index 0000000..31b4f89 --- /dev/null +++ b/pcap_freecode.3pcap @@ -0,0 +1,45 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_freecode.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_FREECODE 3PCAP "5 April 2008" +.SH NAME +pcap_freecode \- free a BPF program +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +void pcap_freecode(struct bpf_program *); +.ft +.fi +.SH DESCRIPTION +.B pcap_freecode() +is used to free up allocated memory pointed to by a +.I bpf_program +struct generated by +.B pcap_compile() +when that BPF program is no longer needed, for example after it +has been made the filter program for a pcap structure by a call to +.BR pcap_setfilter() . +.SH SEE ALSO +pcap(3PCAP), pcap_compile(3PCAP), pcap_setfilter(3PCAP) diff --git a/pcap_get_selectable_fd.3pcap b/pcap_get_selectable_fd.3pcap new file mode 100644 index 0000000..ae33dbb --- /dev/null +++ b/pcap_get_selectable_fd.3pcap @@ -0,0 +1,129 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_get_selectable_fd.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_GET_SELECTABLE_FD 3PCAP "5 April 2008" +.SH NAME +pcap_get_selectable_fd \- get a file descriptor on which a select() can +be done for a live capture +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_get_selectable_fd(pcap_t *p); +.ft +.fi +.SH DESCRIPTION +.B pcap_get_selectable_fd() +returns, on UNIX, a file descriptor number for a file descriptor on +which one can +do a +.B select() +or +.B poll() +to wait for it to be possible to read packets without blocking, if such +a descriptor exists, or \-1, if no such descriptor exists. Some network +devices opened with +.B pcap_create() +and +.BR pcap_activate() , +or with +.BR pcap_open_live() , +do not support +.B select() +or +.B poll() +(for example, regular network devices on FreeBSD 4.3 and 4.4, and Endace +DAG devices), so \-1 is returned for those devices. +.PP +Note that in: +.IP +FreeBSD prior to FreeBSD 4.6; +.IP +NetBSD prior to NetBSD 3.0; +.IP +OpenBSD prior to OpenBSD 2.4; +.IP +Mac OS X prior to Mac OS X 10.7; +.PP +.B select() +and +.B poll() +do not work correctly on BPF devices; +.B pcap_get_selectable_fd() +will return a file descriptor on most of those versions (the exceptions +being FreeBSD 4.3 and 4.4), but a simple +.B select() +or +.B poll() +will not indicate that the descriptor is readable until a full buffer's +worth of packets is received, even if the read timeout expires before +then. To work around this, an application that uses +.B select() +or +.B poll() +to wait for packets to arrive must put the +.B pcap_t +in non-blocking mode, and must arrange that the +.B select() +or +.B poll() +have a timeout less than or equal to the read timeout, +and must try to read packets after that timeout expires, regardless of +whether +.B select() +or +.B poll() +indicated that the file descriptor for the +.B pcap_t +is ready to be read or not. (That workaround will not work in FreeBSD +4.3 and later; however, in FreeBSD 4.6 and later, +.B select() +and +.B poll() +work correctly on BPF devices, so the workaround isn't necessary, +although it does no harm.) +.PP +Note also that +.B poll() +doesn't work on character special files, including BPF devices, in Mac +OS X 10.4 and 10.5, so, while +.B select() +can be used on the descriptor returned by +.BR pcap_get_selectable_fd() , +.B poll() +cannot be used on it those versions of Mac OS X. Kqueues also don't +work on that descriptor. +.BR poll() , +but not kqueues, work on that descriptor in Mac OS X releases prior to +10.4; +.B poll() +and kqueues work on that descriptor in Mac OS X 10.6 and later. +.PP +.B pcap_get_selectable_fd() +is not available on Windows. +.SH RETURN VALUE +A selectable file descriptor is returned if one exists; otherwise, \-1 +is returned. +.SH SEE ALSO +pcap(3PCAP), select(2), poll(2) diff --git a/pcap_geterr.3pcap b/pcap_geterr.3pcap new file mode 100644 index 0000000..1a4ea34 --- /dev/null +++ b/pcap_geterr.3pcap @@ -0,0 +1,53 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_geterr.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_GETERR 3PCAP "5 April 2008" +.SH NAME +pcap_geterr, pcap_perror \- get or print libpcap error message text +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +char *pcap_geterr(pcap_t *p); +void pcap_perror(pcap_t *p, char *prefix); +.ft +.fi +.SH DESCRIPTION +.B pcap_geterr() +returns the error text pertaining to the last pcap library error. +.BR NOTE : +the pointer it returns will no longer point to a valid error message +string after the +.B pcap_t +passed to it is closed; you must use or copy the string before closing +the +.BR pcap_t . +.PP +.B pcap_perror() +prints the text of the last pcap library error on +.BR stderr , +prefixed by +.IR prefix . +.SH SEE ALSO +pcap(3PCAP) diff --git a/pcap_inject.3pcap b/pcap_inject.3pcap new file mode 100644 index 0000000..79a3eea --- /dev/null +++ b/pcap_inject.3pcap @@ -0,0 +1,90 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_inject.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_INJECT 3PCAP "5 April 2008" +.SH NAME +pcap_inject, pcap_sendpacket \- transmit a packet +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_inject(pcap_t *p, const void *buf, size_t size); +int pcap_sendpacket(pcap_t *p, const u_char *buf, int size); +.ft +.fi +.SH DESCRIPTION +.B pcap_inject() +sends a raw packet through the network interface; +.I buf +points to the data of the packet, including the link-layer header, and +.I size +is the number of bytes in the packet. +.PP +Note that, even if you successfully open the network interface, you +might not have permission to send packets on it, or it might not support +sending packets; as +.I pcap_open_live() +doesn't have a flag to indicate whether to open for capturing, sending, +or capturing and sending, you cannot request an open that supports +sending and be notified at open time whether sending will be possible. +Note also that some devices might not support sending packets. +.PP +Note that, on some platforms, the link-layer header of the packet that's +sent might not be the same as the link-layer header of the packet +supplied to +.BR pcap_inject() , +as the source link-layer address, if the header contains such an +address, might be changed to be the address assigned to the interface on +which the packet it sent, if the platform doesn't support sending +completely raw and unchanged packets. Even worse, some drivers on some +platforms might change the link-layer type field to whatever value +libpcap used when attaching to the device, even on platforms that +.I do +nominally support sending completely raw and unchanged packets. +.PP +.B pcap_sendpacket() +is like +.BR pcap_inject() , +but it returns 0 on success, rather than returning the number of bytes +written. +.RB ( pcap_inject() +comes from OpenBSD; +.B pcap_sendpacket() +comes from WinPcap. Both are provided for compatibility.) +.SH RETURN VALUE +.B pcap_inject() +returns the number of bytes written on success and \-1 on failure. +.PP +.B pcap_sendpacket() +returns 0 on success and \-1 on failure. +.PP +If \-1 is returned, +.B pcap_geterr() +or +.B pcap_perror() +may be called with +.I p +as an argument to fetch or display the error text. +.SH SEE ALSO +pcap(3PCAP), pcap_geterr(3PCAP) diff --git a/pcap_is_swapped.3pcap b/pcap_is_swapped.3pcap new file mode 100644 index 0000000..4d26b3b --- /dev/null +++ b/pcap_is_swapped.3pcap @@ -0,0 +1,42 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_is_swapped.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_IS_SWAPPED 3PCAP "5 April 2008" +.SH NAME +pcap_is_swapped \- find out whether a savefile has the native byte order +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_is_swapped(pcap_t *p); +.ft +.fi +.SH DESCRIPTION +.B pcap_is_swapped() +returns true if +.I p +refers to a ``savefile'' that uses a different byte order +than the current system. For a live capture, it always returns false. +.SH SEE ALSO +pcap(3PCAP) diff --git a/pcap_lib_version.3pcap b/pcap_lib_version.3pcap new file mode 100644 index 0000000..7b39be1 --- /dev/null +++ b/pcap_lib_version.3pcap @@ -0,0 +1,41 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_lib_version.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_LIB_VERSION 3PCAP "5 April 2008" +.SH NAME +pcap_lib_version \- get the version information for libpcap +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +const char *pcap_lib_version(void); +.ft +.fi +.SH DESCRIPTION +.B pcap_lib_version() +returns a pointer to a string giving information about the version of +the libpcap library being used; note that it contains more information +than just a version number. +.SH SEE ALSO +pcap(3PCAP) diff --git a/pcap_list_datalinks.3pcap.in b/pcap_list_datalinks.3pcap.in new file mode 100644 index 0000000..6327576 --- /dev/null +++ b/pcap_list_datalinks.3pcap.in @@ -0,0 +1,64 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_list_datalinks.3pcap.in,v 1.1 2008-10-21 07:33:02 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_LIST_DATALINKS 3PCAP "22 August 2010" +.SH NAME +pcap_list_datalinks, pcap_free_datalinks \- get a list of link-layer header +types supported by a capture device, and free that list +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_list_datalinks(pcap_t *p, int **dlt_buf); +void pcap_free_datalinks(int *dlt_list); +.ft +.fi +.SH DESCRIPTION +.B pcap_list_datalinks() +is used to get a list of the supported link-layer header types of the +interface associated with the pcap descriptor. +.B pcap_list_datalinks() +allocates an array to hold the list and sets +.IR *dlt_buf +to point to that array. +.LP +The caller is responsible for freeing the array with +.BR pcap_free_datalinks() , +which frees the list of link-layer header types pointed to by +.IR dlt_list . +.SH RETURN VALUE +.B pcap_list_datalinks() +returns the number of link-layer header types in the array on success +and \-1 on failure. +If \-1 is returned, +.B pcap_geterr() +or +.B pcap_perror() +may be called with +.I p +as an argument to fetch or display the error text. +.SH SEE ALSO +pcap(3PCAP), pcap_geterr(3PCAP), +pcap_datalink_val_to_name(3PCAP), +pcap-linktype(@MAN_MISC_INFO@) diff --git a/pcap_list_tstamp_types.3pcap.in b/pcap_list_tstamp_types.3pcap.in new file mode 100644 index 0000000..66d3d66 --- /dev/null +++ b/pcap_list_tstamp_types.3pcap.in @@ -0,0 +1,70 @@ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_LIST_TSTAMP_TYPES 3PCAP "21 August 2010" +.SH NAME +pcap_list_tstamp_types, pcap_free_tstamp_types \- get a list of time +stamp types supported by a capture device, and free that list +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_list_tstamp_types(pcap_t *p, int **tstamp_typesp); +void pcap_free_tstamp_types(int *tstamp_types); +.ft +.fi +.SH DESCRIPTION +.B pcap_list_tstamp_types() +is used to get a list of the supported time stamp types of the interface +associated with the pcap descriptor. +.B pcap_list_tstamp_types() +allocates an array to hold the list and sets +.I *tstamp_typesp +to point to the array. +See +.BR pcap-tstamp (@MAN_MISC_INFO@) +for a list of all the time stamp types. +.PP +The caller is responsible for freeing the array with +.BR pcap_free_tstamp_types() , +which frees the list pointed to by +.IR tstamp_types . +.SH RETURN VALUE +.B pcap_list_tstamp_types() +returns the number of time stamp types in the array on success and +.B PCAP_ERROR +on failure. +A return value of zero means that you cannot specify a time stamp type; +you are limited to the capture device's default time stamp type. +If +.B PCAP_ERROR +is returned, +.B pcap_geterr() +or +.B pcap_perror() +may be called with +.I p +as an argument to fetch or display the error text. +.SH SEE ALSO +pcap(3PCAP), pcap_geterr(3PCAP), pcap_tstamp_type_val_to_name(3PCAP), +pcap-tstamp(@MAN_MISC_INFO@) diff --git a/pcap_lookupdev.3pcap b/pcap_lookupdev.3pcap new file mode 100644 index 0000000..8b23cb8 --- /dev/null +++ b/pcap_lookupdev.3pcap @@ -0,0 +1,62 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_lookupdev.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_LOOKUPDEV 3PCAP "5 April 2008" +.SH NAME +pcap_lookupdev \- find the default device on which to capture +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.nf +.ft B +char errbuf[PCAP_ERRBUF_SIZE]; +.ft +.LP +.ft B +char *pcap_lookupdev(char *errbuf); +.ft +.fi +.SH DESCRIPTION +.B pcap_lookupdev() +returns a pointer to a string giving the name of a network device +suitable for use with +.B pcap_create() +and +.BR pcap_activate() , +or with +.BR pcap_open_live() , +and with +.BR pcap_lookupnet() . +If there is an error, +.B NULL +is returned and +.I errbuf +is filled in with an appropriate error message. +.I errbuf +is assumed to be able to hold at least +.B PCAP_ERRBUF_SIZE +chars. +.SH SEE ALSO +pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP), +pcap_open_live(3PCAP), pcap_lookupnet(3PCAP) diff --git a/pcap_lookupnet.3pcap b/pcap_lookupnet.3pcap new file mode 100644 index 0000000..75c82cf --- /dev/null +++ b/pcap_lookupnet.3pcap @@ -0,0 +1,65 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_lookupnet.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_LOOKUPNET 3PCAP "5 April 2008" +.SH NAME +pcap_lookupnet \- find the IPv4 network number and netmask for a device +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.nf +.ft B +char errbuf[PCAP_ERRBUF_SIZE]; +.ft +.LP +.ft B +int pcap_lookupnet(const char *device, bpf_u_int32 *netp, +.ti +8 +bpf_u_int32 *maskp, char *errbuf); +.ft +.fi +.SH DESCRIPTION +.B pcap_lookupnet() +is used to determine the IPv4 network number and mask +associated with the network device +.IR device . +Both +.I netp +and +.I maskp +are +.I bpf_u_int32 +pointers. +.SH RETURN VALUE +.B pcap_lookupnet() +returns 0 on success and \-1 on failure. +If \-1 is returned, +.I errbuf +is filled in with an appropriate error message. +.I errbuf +is assumed to be able to hold at least +.B PCAP_ERRBUF_SIZE +chars. +.SH SEE ALSO +pcap(3PCAP) diff --git a/pcap_loop.3pcap b/pcap_loop.3pcap new file mode 100644 index 0000000..da30693 --- /dev/null +++ b/pcap_loop.3pcap @@ -0,0 +1,157 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_loop.3pcap,v 1.4 2008-12-25 02:01:32 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_LOOP 3PCAP "24 December 2008" +.SH NAME +pcap_loop, pcap_dispatch \- process packets from a live capture or savefile +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +typedef void (*pcap_handler)(u_char *user, const struct pcap_pkthdr *h, +.ti +8 + const u_char *bytes); +.ft +.LP +.ft B +int pcap_loop(pcap_t *p, int cnt, +.ti +8 +pcap_handler callback, u_char *user); +int pcap_dispatch(pcap_t *p, int cnt, +.ti +8 +pcap_handler callback, u_char *user); +.ft +.fi +.SH DESCRIPTION +.B pcap_loop() +processes packets from a live capture or ``savefile'' until +.I cnt +packets are processed, the end of the ``savefile'' is +reached when reading from a ``savefile'', +.B pcap_breakloop() +is called, or an error occurs. +It does +.B not +return when live read timeouts occur. +A value of \-1 or 0 for +.I cnt +is equivalent to infinity, so that packets are processed until another +ending condition occurs. +.PP +.B pcap_dispatch() +processes packets from a live capture or ``savefile'' until +.I cnt +packets are processed, the end of the current bufferful of packets is +reached when doing a live capture, the end of the ``savefile'' is +reached when reading from a ``savefile'', +.B pcap_breakloop() +is called, or an error occurs. +Thus, when doing a live capture, +.I cnt +is the maximum number of packets to process before returning, but is not +a minimum number; when reading a live capture, only one +bufferful of packets is read at a time, so fewer than +.I cnt +packets may be processed. A value of \-1 or 0 for +.I cnt +causes all the packets received in one buffer to be processed when +reading a live capture, and causes all the packets in the file to be +processed when reading a ``savefile''. +.PP +.ft B +(In older versions of libpcap, the behavior when +\fIcnt\fP +was 0 was undefined; different platforms and devices behaved +differently, so code that must work with older versions of libpcap +should use \-1, nor 0, as the value of +\fIcnt\fP.) +.ft R +.PP +.I callback +specifies a +.I pcap_handler +routine to be called with three arguments: +a +.I u_char +pointer which is passed in the +.I user +argument to +.B pcap_loop() +or +.BR pcap_dispatch() , +a +.I const struct pcap_pkthdr +pointer pointing to the packet time stamp and lengths, and a +.I const u_char +pointer to the first +.B caplen +(as given in the +.I struct pcap_pkthdr +a pointer to which is passed to the callback routine) +bytes of data from the packet. The +.I struct pcap_pkthdr +and the packet data are not to be freed by the callback routine, and are +not guaranteed to be valid after the callback routine returns; if the +code needs them to be valid after the callback, it must make a copy of +them. +.SH RETURN VALUE +.B pcap_loop() +returns 0 if +.I cnt +is exhausted, \-1 if an error occurs, or \-2 if the loop terminated due +to a call to +.B pcap_breakloop() +before any packets were processed. +It does +.B not +return when live read timeouts occur; instead, it attempts to read more +packets. +.PP +.B pcap_dispatch() +returns the number of packets processed on success; this can be 0 if no +packets were read from a live capture (if, for example, they were +discarded because they didn't pass the packet filter, or if, on +platforms that support a read timeout that starts before any packets +arrive, the timeout expires before any packets arrive, or if the file +descriptor for the capture device is in non-blocking mode and no packets +were available to be read) or if no more packets are available in a +``savefile.'' It returns \-1 if an error occurs or \-2 if the loop +terminated due to a call to +.B pcap_breakloop() +before any packets were processed. +.ft B +If your application uses pcap_breakloop(), +make sure that you explicitly check for \-1 and \-2, rather than just +checking for a return value < 0. +.ft R +.PP +If \-1 is returned, +.B pcap_geterr() +or +.B pcap_perror() +may be called with +.I p +as an argument to fetch or display the error text. +.SH SEE ALSO +pcap(3PCAP), pcap_geterr(3PCAP), pcap_breakloop(3PCAP) diff --git a/pcap_major_version.3pcap b/pcap_major_version.3pcap new file mode 100644 index 0000000..31903dc --- /dev/null +++ b/pcap_major_version.3pcap @@ -0,0 +1,56 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_major_version.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_MAJOR_VERSION 3PCAP "5 April 2008" +.SH NAME +pcap_major_version, pcap_minor_version \- get the version number of a savefile +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_major_version(pcap_t *p); +int pcap_minor_version(pcap_t *p); +.ft +.fi +.SH DESCRIPTION +If +.I p +refers to a ``savefile'', +.B pcap_major_version() +returns the major number of the file format of the ``savefile'' and +.B pcap_minor_version() +returns the minor number of the file format of the ``savefile''. The +version number is stored in the ``savefile''; note that the meaning of +its values depends on the type of ``savefile'' (for example, pcap or +pcap-NG). +.PP +If +.I p +refers to a live capture, the values returned by +.B pcap_major_version() +and +.B pcap_minor_version() +are not meaningful. +.SH SEE ALSO +pcap(3PCAP) diff --git a/pcap_next_ex.3pcap b/pcap_next_ex.3pcap new file mode 100644 index 0000000..7373836 --- /dev/null +++ b/pcap_next_ex.3pcap @@ -0,0 +1,107 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_next_ex.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_NEXT_EX 3PCAP "5 April 2008" +.SH NAME +pcap_next_ex, pcap_next \- read the next packet from a pcap_t +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_next_ex(pcap_t *p, struct pcap_pkthdr **pkt_header, +.ti +8 +const u_char **pkt_data); +const u_char *pcap_next(pcap_t *p, struct pcap_pkthdr *h); +.ft +.fi +.SH DESCRIPTION +.B pcap_next_ex() +reads the next packet and returns a success/failure indication. +If the packet was read without problems, the pointer pointed to by the +.I pkt_header +argument is set to point to the +.I pcap_pkthdr +struct for the packet, and the +pointer pointed to by the +.I pkt_data +argument is set to point to the data in the packet. The +.I struct pcap_pkthdr +and the packet data are not to be freed by the caller, and are not +guaranteed to be valid after the next call to +.BR pcap_next_ex() , +.BR pcap_next() , +.BR pcap_loop() , +or +.BR pcap_dispatch() ; +if the code needs them to remain valid, it must make a copy of them. +.PP +.B pcap_next() +reads the next packet (by calling +.B pcap_dispatch() +with a +.I cnt +of 1) and returns a +.I u_char +pointer to the data in that packet. The +packet data is not to be freed by the caller, and is not +guaranteed to be valid after the next call to +.BR pcap_next_ex() , +.BR pcap_next() , +.BR pcap_loop() , +or +.BR pcap_dispatch() ; +if the code needs it to remain valid, it must make a copy of it. +The +.I pcap_pkthdr +structure pointed to by +.I h +is filled in with the appropriate values for the packet. +.SH RETURN VALUE +.B pcap_next_ex() +returns 1 if the packet was read without problems, 0 +if packets are being read from a live capture, and the timeout expired, +\-1 if an error occurred while reading the packet, and \-2 if +packets are being read from a ``savefile'', and there are no more +packets to read from the savefile. +If \-1 is returned, +.B pcap_geterr() +or +.B pcap_perror() +may be called with +.I p +as an argument to fetch or display the error text. +.PP +.B pcap_next() +returns a pointer to the packet data on success, and returns +.B NULL +if an error occurred, or if no packets were read from a live +capture (if, for example, they were discarded because they didn't pass +the packet filter, or if, on platforms that support a read timeout that +starts before any packets arrive, the timeout expires before any packets +arrive, or if the file descriptor for the capture device is in +non-blocking mode and no packets were available to be read), or if no +more packets are available in a ``savefile.'' Unfortunately, there is +no way to determine whether an error occurred or not. +.SH SEE ALSO +pcap(3PCAP), pcap_geterr(3PCAP), pcap_dispatch(3PCAP) diff --git a/pcap_offline_filter.3pcap b/pcap_offline_filter.3pcap new file mode 100644 index 0000000..596c5e4 --- /dev/null +++ b/pcap_offline_filter.3pcap @@ -0,0 +1,57 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_offline_filter.3pcap,v 1.1 2008-05-13 15:19:56 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_OFFLINE_FILTER 3PCAP "13 May 2008" +.SH NAME +pcap_offline_filter \- check whether a filter matches a packet +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_offline_filter(struct bpf_program *fp, +.ti +8 +const struct pcap_pkthdr *h, const u_char *pkt) +.ft +.fi +.SH DESCRIPTION +.B pcap_offline_filter() +checks whether a filter matches a packet. +.I fp +is a pointer to a +.I bpf_program +struct, usually the result of a call to +.BR pcap_compile() . +.I h +points to the +.I pcap_pkthdr +structure for the packet, and +.I pkt +points to the data in the packet. +.SH RETURN VALUE +.B pcap_offline_filter() +returns the return value of the filter program. This will be zero if +the packet doesn't match the filter and non-zero if the packet matches +the filter. +.SH SEE ALSO +pcap(3PCAP), pcap_compile(3PCAP) diff --git a/pcap_open_dead.3pcap.in b/pcap_open_dead.3pcap.in new file mode 100644 index 0000000..00df786 --- /dev/null +++ b/pcap_open_dead.3pcap.in @@ -0,0 +1,52 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_open_dead.3pcap.in,v 1.1 2008-10-21 07:33:02 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_OPEN_DEAD 3PCAP "5 April 2008" +.SH NAME +pcap_open_dead \- open a fake pcap_t for compiling filters or opening a +capture for output +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +pcap_t *pcap_open_dead(int linktype, int snaplen); +.ft +.fi +.SH DESCRIPTION +.PP +.B pcap_open_dead() +is used for creating a +.B pcap_t +structure to use when calling the other functions in libpcap. It is +typically used when just using libpcap for compiling BPF code. +.PP +.I linktype +specifies the link-layer type for the +.BR pcap_t . +.PP +.I snaplen +specifies the snapshot length for the +.BR pcap_t . +.SH SEE ALSO +pcap(3PCAP), pcap-linktype(@MAN_MISC_INFO@) diff --git a/pcap_open_live.3pcap b/pcap_open_live.3pcap new file mode 100644 index 0000000..0889a2a --- /dev/null +++ b/pcap_open_live.3pcap @@ -0,0 +1,89 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_open_live.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_OPEN_LIVE 3PCAP "5 April 2008" +.SH NAME +pcap_open_live \- open a device for capturing +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.nf +.ft B +char errbuf[PCAP_ERRBUF_SIZE]; +.ft +.LP +.ft B +pcap_t *pcap_open_live(const char *device, int snaplen, +.ti +8 +int promisc, int to_ms, char *errbuf); +.ft +.fi +.SH DESCRIPTION +.B pcap_open_live() +is used to obtain a packet capture handle to look +at packets on the network. +.I device +is a string that specifies the network device to open; on Linux systems +with 2.2 or later kernels, a +.I device +argument of "any" or +.B NULL +can be used to capture packets from all interfaces. +.PP +.I snaplen +specifies the snapshot length to be set on the handle. +.PP +.I promisc +specifies if the interface is to be put into promiscuous mode. +.PP +.I to_ms +specifies the read timeout in milliseconds. +.SH RETURN VALUE +.B pcap_open_live() +returns a +.I pcap_t * +on success and +.B NULL +on failure. +If +.B NULL +is returned, +.I errbuf +is filled in with an appropriate error message. +.I errbuf +may also be set to warning text when +.B pcap_open_live() +succeeds; to detect this case the caller should store a zero-length string in +.I errbuf +before calling +.B pcap_open_live() +and display the warning to the user if +.I errbuf +is no longer a zero-length string. +.I errbuf +is assumed to be able to hold at least +.B PCAP_ERRBUF_SIZE +chars. +.SH SEE ALSO +pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP) diff --git a/pcap_open_offline.3pcap.in b/pcap_open_offline.3pcap.in new file mode 100644 index 0000000..3f9f5a2 --- /dev/null +++ b/pcap_open_offline.3pcap.in @@ -0,0 +1,82 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_open_offline.3pcap.in,v 1.1 2008-10-23 05:56:59 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_OPEN_OFFLINE 3PCAP "5 April 2008" +.SH NAME +pcap_open_offline, pcap_fopen_offline \- open a saved capture file for reading +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.nf +.ft B +char errbuf[PCAP_ERRBUF_SIZE]; +.ft +.LP +.ft B +pcap_t *pcap_open_offline(const char *fname, char *errbuf); +pcap_t *pcap_fopen_offline(FILE *fp, char *errbuf); +.ft +.fi +.SH DESCRIPTION +.B pcap_open_offline() +is called to open a ``savefile'' for reading. +.PP +.I fname +specifies the name of the file to open. The file can have the pcap file +format as described in +.BR pcap-savefile (@MAN_FILE_FORMATS@), +which is the file format used by, among other programs, +.BR tcpdump (1) +and +.BR tcpslice (1), +or can have the pcap-ng file format, although not all pcap-ng files can +be read. +The name "-" in a synonym for +.BR stdin . +.PP +Alternatively, you may call +.B pcap_fopen_offline() +to read dumped data from an existing open stream +.IR fp . +Note that on Windows, that stream should be opened in binary mode. +.SH RETURN VALUE +.B pcap_open_offline() +and +.B pcap_fopen_offline() +return a +.I pcap_t * +on success and +.B NULL +on failure. +If +.B NULL +is returned, +.I errbuf +is filled in with an appropriate error message. +.I errbuf +is assumed to be able to hold at least +.B PCAP_ERRBUF_SIZE +chars. +.SH SEE ALSO +pcap(3PCAP), pcap-savefile(@MAN_FILE_FORMATS@) diff --git a/pcap_set_buffer_size.3pcap b/pcap_set_buffer_size.3pcap new file mode 100644 index 0000000..060e923 --- /dev/null +++ b/pcap_set_buffer_size.3pcap @@ -0,0 +1,47 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_set_buffer_size.3pcap,v 1.1 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_SET_BUFFER_SIZE 3PCAP "5 April 2008" +.SH NAME +pcap_set_buffer_size \- set the buffer size for a not-yet-activated +capture handle +.SH SYNOPSIS +.nf +.ft B +#include +.LP +.ft B +int pcap_set_buffer_size(pcap_t *p, int buffer_size); +.ft +.fi +.SH DESCRIPTION +.B pcap_set_buffer_size() +sets the buffer size that will be used on a capture handle when +the handle is activated to +.IR buffer_size , +which is in units of bytes. +.SH RETURN VALUE +.B pcap_set_buffer_size() +returns 0 on success or +.B PCAP_ERROR_ACTIVATED +if called on a capture handle that has been activated. +.SH SEE ALSO +pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP) diff --git a/pcap_set_datalink.3pcap b/pcap_set_datalink.3pcap new file mode 100644 index 0000000..9af32d0 --- /dev/null +++ b/pcap_set_datalink.3pcap @@ -0,0 +1,53 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_set_datalink.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_SET_DATALINK 3PCAP "22 August 2010" +.SH NAME +pcap_set_datalink \- set the link-layer header type to be used by a +capture device +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_set_datalink(pcap_t *p, int dlt); +.ft +.fi +.SH DESCRIPTION +.B pcap_set_datalink() +is used to set the current link-layer header type of the pcap descriptor +to the type specified by +.IR dlt . +.SH RETURN VALUE +.B pcap_set_datalink() +returns 0 on success and \-1 on failure. +If \-1 is returned, +.B pcap_geterr() +or +.B pcap_perror() +may be called with +.I p +as an argument to fetch or display the error text. +.SH SEE ALSO +pcap(3PCAP), pcap_geterr(3PCAP), +pcap_datalink_name_to_val(3PCAP) diff --git a/pcap_set_promisc.3pcap b/pcap_set_promisc.3pcap new file mode 100644 index 0000000..382260c --- /dev/null +++ b/pcap_set_promisc.3pcap @@ -0,0 +1,48 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_set_promisc.3pcap,v 1.1 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_SET_PROMISC 3PCAP "5 April 2008" +.SH NAME +pcap_set_promisc \- set promiscuous mode for a not-yet-activated +capture handle +.SH SYNOPSIS +.nf +.ft B +#include +.LP +.ft B +int pcap_set_promisc(pcap_t *p, int promisc); +.ft +.fi +.SH DESCRIPTION +.B pcap_set_promisc() +sets whether promiscuous mode should be set on a capture handle when +the handle is activated. +If +.I promisc +is non-zero, promiscuous mode will be set, otherwise it will not be set. +.SH RETURN VALUE +.B pcap_set_promisc() +returns 0 on success or +.B PCAP_ERROR_ACTIVATED +if called on a capture handle that has been activated. +.SH SEE ALSO +pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP) diff --git a/pcap_set_rfmon.3pcap b/pcap_set_rfmon.3pcap new file mode 100644 index 0000000..ee73556 --- /dev/null +++ b/pcap_set_rfmon.3pcap @@ -0,0 +1,49 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_set_rfmon.3pcap,v 1.1 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_SET_RFMON 3PCAP "5 April 2008" +.SH NAME +pcap_set_rfmon \- set monitor mode for a not-yet-activated capture +handle +.SH SYNOPSIS +.nf +.ft B +#include +.LP +.ft B +int pcap_set_rfmon(pcap_t *p, int rfmon); +.ft +.fi +.SH DESCRIPTION +.B pcap_set_rfmon() +sets whether monitor mode should be set on a capture handle when +the handle is activated. +If +.I rfmon +is non-zero, monitor mode will be set, otherwise it will not be set. +.SH RETURN VALUE +.B pcap_set_rfmon() +returns 0 on success or +.B PCAP_ERROR_ACTIVATED +if called on a capture handle that has been activated. +.SH SEE ALSO +pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP), +pcap_can_set_rfmon(3PCAP) diff --git a/pcap_set_snaplen.3pcap b/pcap_set_snaplen.3pcap new file mode 100644 index 0000000..74195d9 --- /dev/null +++ b/pcap_set_snaplen.3pcap @@ -0,0 +1,46 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_set_snaplen.3pcap,v 1.1 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_SET_SNAPLEN 3PCAP "5 April 2008" +.SH NAME +pcap_set_snaplen \- set the snapshot length for a not-yet-activated +capture handle +.SH SYNOPSIS +.nf +.ft B +#include +.LP +.ft B +int pcap_set_snaplen(pcap_t *p, int snaplen); +.ft +.fi +.SH DESCRIPTION +.B pcap_set_snaplen() +sets the snapshot length to be used on a capture handle when the handle +is activated to +.IR snaplen . +.SH RETURN VALUE +.B pcap_set_snaplen() +returns 0 on success or +.B PCAP_ERROR_ACTIVATED +if called on a capture handle that has been activated. +.SH SEE ALSO +pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP) diff --git a/pcap_set_timeout.3pcap b/pcap_set_timeout.3pcap new file mode 100644 index 0000000..c361b7d --- /dev/null +++ b/pcap_set_timeout.3pcap @@ -0,0 +1,47 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_set_timeout.3pcap,v 1.1 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_SET_TIMEOUT 3PCAP "5 April 2008" +.SH NAME +pcap_set_timeout \- set the read timeout for a not-yet-activated +capture handle +.SH SYNOPSIS +.nf +.ft B +#include +.LP +.ft B +int pcap_set_timeout(pcap_t *p, int to_ms); +.ft +.fi +.SH DESCRIPTION +.B pcap_set_timeout() +sets the read timeout that will be used on a capture handle when +the handle is activated to +.IR to_ms , +which is in units of milliseconds. +.SH RETURN VALUE +.B pcap_set_timeout() +returns 0 on success or +.B PCAP_ERROR_ACTIVATED +if called on a capture handle that has been activated. +.SH SEE ALSO +pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP) diff --git a/pcap_set_tstamp_type.3pcap.in b/pcap_set_tstamp_type.3pcap.in new file mode 100644 index 0000000..261c315 --- /dev/null +++ b/pcap_set_tstamp_type.3pcap.in @@ -0,0 +1,65 @@ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_SET_TSTAMP_TYPE 3PCAP "21 August 2010" +.SH NAME +pcap_set_tstamp_type \- set the time stamp type to be used by a +capture device +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_set_tstamp_type(pcap_t *p, int tstamp_type); +.ft +.fi +.SH DESCRIPTION +.B pcap_set_tstamp_type() +sets the the type of time stamp desired for packets captured on the pcap +descriptor to the type specified by +.IR tstamp_type . +It must be called on a pcap descriptor created by +.B pcap_create() +that has not yet been activated by +.BR pcap_activate() . +.B pcap_list_tstamp_types() +will give a list of the time stamp types supported by a given capture +device. +See +.BR pcap-tstamp (@MAN_MISC_INFO@) +for a list of all the time stamp types. +.SH RETURN VALUE +.B pcap_set_tstamp_type() +returns 0 on success if the specified time stamp type is expected to be +supported by the capture device, +.B PCAP_WARNING_TSTAMP_TYPE_NOTSUP +on success if the specified time stamp type is not supported by the +capture device, +.B PCAP_ERROR_ACTIVATED +if called on a capture handle that has been activated, and +.B PCAP_ERROR_CANTSET_TSTAMP_TYPE +if the capture device doesn't support setting the time stamp type. +.SH SEE ALSO +pcap(3PCAP), +pcap_list_tstamp_types(3PCAP), +pcap_tstamp_type_name_to_val(3PCAP), +pcap-tstamp(@MAN_MISC_INFO@) diff --git a/pcap_setdirection.3pcap b/pcap_setdirection.3pcap new file mode 100644 index 0000000..bd0fb25 --- /dev/null +++ b/pcap_setdirection.3pcap @@ -0,0 +1,71 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_setdirection.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_SETDIRECTION 3PCAP "5 April 2008" +.SH NAME +pcap_setdirection \- set the direction for which packets will be captured +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_setdirection(pcap_t *p, pcap_direction_t d); +.ft +.fi +.SH DESCRIPTION +.B pcap_setdirection() +is used to specify a direction that packets will be captured. +.I d +is one of the constants +.BR PCAP_D_IN , +.B PCAP_D_OUT +or +.BR PCAP_D_INOUT . +.B PCAP_D_IN +will only capture packets received by the device, +.B PCAP_D_OUT +will only capture packets sent by the device and +.B PCAP_D_INOUT +will capture packets received by or sent by the device. +.B PCAP_D_INOUT +is the default setting if this function is not called. +.PP +.B pcap_setdirection() +isn't necessarily fully supported on all platforms; some platforms might +return an error for all values, and some other platforms might not +support +.BR PCAP_D_OUT . +.PP +This operation is not supported if a ``savefile'' is being read. +.SH RETURN VALUE +.B pcap_setdirection() +returns 0 on success and \-1 on failure. +If \-1 is returned, +.B pcap_geterr() +or +.B pcap_perror() +may be called with +.I p +as an argument to fetch or display the error text. +.SH SEE ALSO +pcap(3PCAP), pcap_geterr(3PCAP) diff --git a/pcap_setfilter.3pcap b/pcap_setfilter.3pcap new file mode 100644 index 0000000..89d5da7 --- /dev/null +++ b/pcap_setfilter.3pcap @@ -0,0 +1,54 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_setfilter.3pcap,v 1.4 2008-05-13 15:19:56 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_SETFILTER 3PCAP "5 April 2008" +.SH NAME +pcap_setfilter \- set the filter +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_setfilter(pcap_t *p, struct bpf_program *fp); +.ft +.fi +.SH DESCRIPTION +.B pcap_setfilter() +is used to specify a filter program. +.I fp +is a pointer to a +.I bpf_program +struct, usually the result of a call to +.BR pcap_compile() . +.SH RETURN VALUE +.B pcap_setfilter() +returns 0 on success and \-1 on failure. +If \-1 is returned, +.B pcap_geterr() +or +.B pcap_perror() +may be called with +.I p +as an argument to fetch or display the error text. +.SH SEE ALSO +pcap(3PCAP), pcap_compile(3PCAP), pcap_geterr(3PCAP) diff --git a/pcap_setnonblock.3pcap b/pcap_setnonblock.3pcap new file mode 100644 index 0000000..b00fce1 --- /dev/null +++ b/pcap_setnonblock.3pcap @@ -0,0 +1,75 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_setnonblock.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_SETNONBLOCK 3PCAP "5 April 2008" +.SH NAME +pcap_setnonblock, pcap_getnonblock \- set or get the state of +non-blocking mode on a capture device +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.nf +.ft B +char errbuf[PCAP_ERRBUF_SIZE]; +.ft +.LP +.ft B +int pcap_setnonblock(pcap_t *p, int nonblock, char *errbuf); +int pcap_getnonblock(pcap_t *p, char *errbuf); +.ft +.fi +.SH DESCRIPTION +.B pcap_setnonblock() +puts a capture handle into ``non-blocking'' mode, or takes it out +of ``non-blocking'' mode, depending on whether the +.I nonblock +argument is non-zero or zero. It has no effect on ``savefiles''. +If there is an error, \-1 is returned and +.I errbuf +is filled in with an appropriate error message; otherwise, 0 is +returned. +In +``non-blocking'' mode, an attempt to read from the capture descriptor +with +.B pcap_dispatch() +will, if no packets are currently available to be read, return 0 +immediately rather than blocking waiting for packets to arrive. +.B pcap_loop() +and +.B pcap_next() +will not work in ``non-blocking'' mode. +.SH RETURN VALUE +.B pcap_getnonblock() +returns the current ``non-blocking'' state of the capture descriptor; it +always returns 0 on ``savefiles''. +If there is an error, \-1 is returned and +.I errbuf +is filled in with an appropriate error message. +.PP +.I errbuf +is assumed to be able to hold at least +.B PCAP_ERRBUF_SIZE +chars. +.SH SEE ALSO +pcap(3PCAP), pcap_loop(3PCAP), pcap_next_ex(3PCAP), pcap_geterr(3PCAP) diff --git a/pcap_snapshot.3pcap b/pcap_snapshot.3pcap new file mode 100644 index 0000000..3025312 --- /dev/null +++ b/pcap_snapshot.3pcap @@ -0,0 +1,44 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_snapshot.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_SNAPSHOT 3PCAP "5 April 2008" +.SH NAME +pcap_snapshot \- get the snapshot length +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_snapshot(pcap_t *p); +.ft +.fi +.SH DESCRIPTION +.B pcap_snapshot() +returns the snapshot length specified when +.B pcap_set_snapshot() +or +.B pcap_open_live() +was called, for a live capture, or the snapshot length from the capture +file, for a ``savefile''. +.SH SEE ALSO +pcap(3PCAP) diff --git a/pcap_stats.3pcap b/pcap_stats.3pcap new file mode 100644 index 0000000..a953e21 --- /dev/null +++ b/pcap_stats.3pcap @@ -0,0 +1,99 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_stats.3pcap,v 1.3 2008-04-06 02:53:22 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_STATS 3PCAP "7 September 2009" +.SH NAME +pcap_stats \- get capture statistics +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_stats(pcap_t *p, struct pcap_stat *ps); +.ft +.fi +.SH DESCRIPTION +.B pcap_stats() +fills in the +.B struct pcap_stat +pointed to by its second argument. The values represent +packet statistics from the start of the run to the time of the call. +.PP +.B pcap_stats() +is supported only on live captures, not on ``savefiles''; no statistics +are stored in ``savefiles'', so no statistics are available when reading +from a ``savefile''. +.PP +A +.B struct pcap_stat +has the following members: +.RS +.TP +.B ps_recv +number of packets received; +.TP +.B ps_drop +number of packets dropped because there was no room in the operating +system's buffer when they arrived, because packets weren't being read +fast enough; +.TP +.B ps_ifdrop +number of packets dropped by the network interface or its driver. +.RE +.PP +The statistics do not behave the same way on all platforms. +.B ps_recv +might count packets whether they passed any filter set with +.BR pcap_setfilter (3PCAP) +or not, or it might count only packets that pass the filter. +It also might, or might not, count packets dropped because there was no +room in the operating system's buffer when they arrived. +.B ps_drop +is not available on all platforms; it is zero on platforms where it's +not available. If packet filtering is done in libpcap, rather than in +the operating system, it would count packets that don't pass the filter. +Both +.B ps_recv +and +.B ps_drop +might, or might not, count packets not yet read from the operating +system and thus not yet seen by the application. +.B ps_ifdrop +might, or might not, be implemented; if it's zero, that might mean that +no packets were dropped by the interface, or it might mean that the +statistic is unavailable, so it should not be treated as an indication +that the interface did not drop any packets. +.SH RETURN VALUE +.B pcap_stats() +returns 0 on success and returns \-1 if there is an error or if +.I p +doesn't support packet statistics. +If \-1 is returned, +.B pcap_geterr() +or +.B pcap_perror() +may be called with +.I p +as an argument to fetch or display the error text. +.SH SEE ALSO +pcap(3PCAP), pcap_geterr(3PCAP) diff --git a/pcap_statustostr.3pcap b/pcap_statustostr.3pcap new file mode 100644 index 0000000..da18f69 --- /dev/null +++ b/pcap_statustostr.3pcap @@ -0,0 +1,43 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_statustostr.3pcap,v 1.1 2008-04-09 21:39:21 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_STATUSTOSTR 3PCAP "9 April 2008" +.SH NAME +pcap_statustostr \- convert a PCAP_ERROR_ or PCAP_WARNING_ value to a string +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +const char *pcap_statustostr(int error); +.ft +.fi +.SH DESCRIPTION +.B pcap_statustostr() +converts a +.B PCAP_ERROR_ +or +.B PCAP_WARNING_ +value returned by a libpcap routine to an error string. +.SH SEE ALSO +pcap(3PCAP) diff --git a/pcap_strerror.3pcap b/pcap_strerror.3pcap new file mode 100644 index 0000000..8e6319b --- /dev/null +++ b/pcap_strerror.3pcap @@ -0,0 +1,42 @@ +.\" @(#) $Header: /tcpdump/master/libpcap/pcap_strerror.3pcap,v 1.2 2008-04-05 20:26:56 guy Exp $ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_STRERROR 3PCAP "4 April 2008" +.SH NAME +pcap_strerror \- convert an errno value to a string +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +const char *pcap_strerror(int error); +.ft +.fi +.SH DESCRIPTION +.B pcap_strerror() +is provided in case +.BR strerror (3) +isn't available. It returns an error message string corresponding to +.IR error . +.SH SEE ALSO +strerror(3) diff --git a/pcap_tstamp_type_name_to_val.3pcap b/pcap_tstamp_type_name_to_val.3pcap new file mode 100644 index 0000000..8fcc4d7 --- /dev/null +++ b/pcap_tstamp_type_name_to_val.3pcap @@ -0,0 +1,45 @@ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_TSTAMP_TYPE_NAME_TO_VAL 3PCAP "21 August 2010" +.SH NAME +pcap_tstamp_type_name_to_val \- get the time stamp type value +corresponding to a time stamp type name +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +int pcap_tstamp_type_name_to_val(const char *name); +.ft +.fi +.SH DESCRIPTION +.B pcap_tstamp_type_name_to_val() +translates a time stamp type name to the corresponding time stamp type +value. The translation is case-insensitive. +.SH RETURN VALUE +.B pcap_tstamp_type_name_to_val() +returns 0 on success and +.B PCAP_ERROR +on failure. +.SH SEE ALSO +pcap(3PCAP), pcap_tstamp_type_val_to_name(3PCAP) diff --git a/pcap_tstamp_type_val_to_name.3pcap b/pcap_tstamp_type_val_to_name.3pcap new file mode 100644 index 0000000..5d8d754 --- /dev/null +++ b/pcap_tstamp_type_val_to_name.3pcap @@ -0,0 +1,45 @@ +.\" +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_TSTAMP_TYPE_VAL_TO_NAME 3PCAP "21 August 2010" +.SH NAME +pcap_tstamp_type_val_to_name, pcap_tstamp_type_val_to_description \- get +a name or description for a time stamp type value +.SH SYNOPSIS +.nf +.ft B +#include +.ft +.LP +.ft B +const char *pcap_tstamp_type_val_to_name(int tstamp_type); +const char *pcap_tstamp_type_val_to_description(int tstamp_type); +.ft +.fi +.SH DESCRIPTION +.B pcap_tstamp_type_val_to_name() +translates a time stamp type value to the corresponding time stamp type +name. NULL is returned on failure. +.PP +.B pcap_tstamp_type_val_to_description() +translates a time stamp type value to a short description of that time +stamp type. NULL is returned on failure. +.SH SEE ALSO +pcap(3PCAP), pcap_tstamp_type_name_to_val(3PCAP) diff --git a/ppp.h b/ppp.h new file mode 100644 index 0000000..4e1d08d --- /dev/null +++ b/ppp.h @@ -0,0 +1,58 @@ +/* @(#) $Header: /tcpdump/master/libpcap/ppp.h,v 1.12 2005-02-08 19:52:19 guy Exp $ (LBL) */ +/* + * Point to Point Protocol (PPP) RFC1331 + * + * Copyright 1989 by Carnegie Mellon. + * + * Permission to use, copy, modify, and distribute this program for any + * purpose and without fee is hereby granted, provided that this copyright + * and permission notice appear on all copies and supporting documentation, + * the name of Carnegie Mellon not be used in advertising or publicity + * pertaining to distribution of the program without specific prior + * permission, and notice be given in supporting documentation that copying + * and distribution is by permission of Carnegie Mellon and Stanford + * University. Carnegie Mellon makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ +#define PPP_ADDRESS 0xff /* The address byte value */ +#define PPP_CONTROL 0x03 /* The control byte value */ + +#define PPP_PPPD_IN 0x00 /* non-standard for DLT_PPP_PPPD */ +#define PPP_PPPD_OUT 0x01 /* non-standard for DLT_PPP_PPPD */ + +/* Protocol numbers */ +#define PPP_IP 0x0021 /* Raw IP */ +#define PPP_OSI 0x0023 /* OSI Network Layer */ +#define PPP_NS 0x0025 /* Xerox NS IDP */ +#define PPP_DECNET 0x0027 /* DECnet Phase IV */ +#define PPP_APPLE 0x0029 /* Appletalk */ +#define PPP_IPX 0x002b /* Novell IPX */ +#define PPP_VJC 0x002d /* Van Jacobson Compressed TCP/IP */ +#define PPP_VJNC 0x002f /* Van Jacobson Uncompressed TCP/IP */ +#define PPP_BRPDU 0x0031 /* Bridging PDU */ +#define PPP_STII 0x0033 /* Stream Protocol (ST-II) */ +#define PPP_VINES 0x0035 /* Banyan Vines */ +#define PPP_IPV6 0x0057 /* Internet Protocol version 6 */ + +#define PPP_HELLO 0x0201 /* 802.1d Hello Packets */ +#define PPP_LUXCOM 0x0231 /* Luxcom */ +#define PPP_SNS 0x0233 /* Sigma Network Systems */ +#define PPP_MPLS_UCAST 0x0281 /* rfc 3032 */ +#define PPP_MPLS_MCAST 0x0283 /* rfc 3022 */ + +#define PPP_IPCP 0x8021 /* IP Control Protocol */ +#define PPP_OSICP 0x8023 /* OSI Network Layer Control Protocol */ +#define PPP_NSCP 0x8025 /* Xerox NS IDP Control Protocol */ +#define PPP_DECNETCP 0x8027 /* DECnet Control Protocol */ +#define PPP_APPLECP 0x8029 /* Appletalk Control Protocol */ +#define PPP_IPXCP 0x802b /* Novell IPX Control Protocol */ +#define PPP_STIICP 0x8033 /* Strean Protocol Control Protocol */ +#define PPP_VINESCP 0x8035 /* Banyan Vines Control Protocol */ +#define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ +#define PPP_MPLSCP 0x8281 /* rfc 3022 */ + +#define PPP_LCP 0xc021 /* Link Control Protocol */ +#define PPP_PAP 0xc023 /* Password Authentication Protocol */ +#define PPP_LQM 0xc025 /* Link Quality Monitoring */ +#define PPP_CHAP 0xc223 /* Challenge Handshake Authentication Protocol */ diff --git a/runlex.sh b/runlex.sh new file mode 100755 index 0000000..74f2161 --- /dev/null +++ b/runlex.sh @@ -0,0 +1,235 @@ +#! /bin/sh + +# +# runlex.sh +# Script to run Lex/Flex. +# First argument is the (quoted) name of the command; if it's null, that +# means that neither Flex nor Lex was found, so we report an error and +# quit. +# +# @(#) $Header: /tcpdump/master/libpcap/runlex.sh,v 1.4 2007-12-31 03:38:39 guy Exp $ +# + +# +# Get the name of the command to run, and then shift to get the arguments. +# +if [ $# -eq 0 ] +then + echo "Usage: runlex [ arguments ]" 1>&2 + exit 1 +fi +LEX="$1" +shift + +# +# Check whether we have Lex or Flex. +# +if [ -z "${LEX}" ] +then + echo "Neither lex nor flex was found" 1>&2 + exit 1 +fi + +# +# Process the flags. We don't use getopt because we don't want to +# embed complete knowledge of what options are supported by Lex/Flex. +# +flags="" +outfile=lex.yy.c +while [ $# -ne 0 ] +do + case "$1" in + + -o*) + # + # Set the output file name. + # + outfile=`echo "$1" | sed 's/-o\(.*\)/\1/'` + ;; + + -*) + # + # Add this to the list of flags. + # + flags="$flags $1" + ;; + + --|*) + # + # End of flags. + # + break + ;; + esac + shift +done + +# +# Is it Lex, or is it Flex? +# +if [ "${LEX}" = flex ] +then + # + # It's Flex. + # + have_flex=yes + + # + # Does it support the --noFUNCTION options? If so, we pass + # --nounput, as at least some versions that support those + # options don't support disabling yyunput by defining + # YY_NO_UNPUT. + # + if flex --help | egrep noFUNCTION >/dev/null + then + flags="$flags --nounput" + + # + # Does it support -R, for generating reentrant scanners? + # If so, we're not currently using that feature, but + # it'll generate some unused functions anyway - and there + # won't be any header file declaring them, so there'll be + # defined-but-not-declared warnings. Therefore, we use + # --noFUNCTION options to suppress generating those + # functions. + # + if flex --help | egrep reentrant >/dev/null + then + flags="$flags --noyyget_lineno --noyyget_in --noyyget_out --noyyget_leng --noyyget_text --noyyset_lineno --noyyset_in --noyyset_out" + fi + fi +else + # + # It's Lex. + # + have_flex=no +fi + +# +# OK, run it. +# If it's lex, it doesn't support -o, so we just write to +# lex.yy.c and, if it succeeds, rename it to the right name, +# otherwise we remove lex.yy.c. +# If it's flex, it supports -o, so we use that - flex with -P doesn't +# write to lex.yy.c, it writes to a lex.{prefix from -P}.c. +# +if [ $have_flex = yes ] +then + ${LEX} $flags -o"$outfile" "$@" + + # + # Did it succeed? + # + status=$? + if [ $status -ne 0 ] + then + # + # No. Exit with the failing exit status. + # + exit $status + fi + + # + # Flex has the annoying habit of stripping all but the last + # component of the "-o" flag argument and using that as the + # place to put the output. This gets in the way of building + # in a directory different from the source directory. Try + # to work around this. + # + # Is the outfile where we think it is? + # + outfile_base=`basename "$outfile"` + if [ "$outfile_base" != "$outfile" -a \( ! -r "$outfile" \) -a -r "$outfile_base" ] + then + # + # No, it's not, but it is in the current directory. Put it + # where it's supposed to be. + # + mv "$outfile_base" "$outfile" + + # + # Did that succeed? + # + status=$? + if [ $status -ne 0 ] + then + # + # No. Exit with the failing exit status. + # + exit $status + fi + fi +else + ${LEX} $flags "$@" + + # + # Did it succeed? + # + status=$? + if [ $status -ne 0 ] + then + # + # No. Get rid of any lex.yy.c file we generated, and + # exit with the failing exit status. + # + rm -f lex.yy.c + exit $status + fi + + # + # OK, rename lex.yy.c to the right output file. + # + mv lex.yy.c "$outfile" + + # + # Did that succeed? + # + status=$? + if [ $status -ne 0 ] + then + # + # No. Get rid of any lex.yy.c file we generated, and + # exit with the failing exit status. + # + rm -f lex.yy.c + exit $status + fi +fi + +# +# OK, now let's generate a header file declaring the relevant functions +# defined by the .c file; if the .c file is .../foo.c, the header file +# will be .../foo.h. +# +# This works around some other Flex suckage, wherein it doesn't declare +# the lex routine before defining it, causing compiler warnings. +# XXX - newer versions of Flex support --header-file=, to generate the +# appropriate header file. With those versions, we should use that option. +# + +# +# Get the name of the prefix; scan the source files for a %option prefix +# line. We use the last one. +# +prefix=`sed -n 's/%option[ ][ ]*prefix="\(.*\)".*/\1/p' "$@" | tail -1` +if [ ! -z "$prefix" ] +then + prefixline="#define yylex ${prefix}lex" +fi + +# +# Construct the name of the header file. +# +header_file=`dirname "$outfile"`/`basename "$outfile" .c`.h + +# +# Spew out the declaration. +# +cat <$header_file +/* This is generated by runlex.sh. Do not edit it. */ +$prefixline +#ifndef YY_DECL +#define YY_DECL int yylex(void) +#endif +YY_DECL; +EOF diff --git a/savefile.c b/savefile.c new file mode 100644 index 0000000..8115749 --- /dev/null +++ b/savefile.c @@ -0,0 +1,394 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * savefile.c - supports offline use of tcpdump + * Extraction/creation by Jeffrey Mogul, DECWRL + * Modified by Steve McCanne, LBL. + * + * Used to save the received packet headers, after filtering, to + * a file, and then read them later. + * The first record in the file contains saved values for the machine + * dependent values so we can print the dump file on any architecture. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/savefile.c,v 1.183 2008-12-23 20:13:29 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef WIN32 +#include +#else /* WIN32 */ +#if HAVE_INTTYPES_H +#include +#elif HAVE_STDINT_H +#include +#endif +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +#include +#endif /* WIN32 */ + +#include +#include +#include +#include +#include + +#include "pcap-int.h" +#include "pcap/usb.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +#include "sf-pcap.h" +#include "sf-pcap-ng.h" + +/* + * Setting O_BINARY on DOS/Windows is a bit tricky + */ +#if defined(WIN32) + #define SET_BINMODE(f) _setmode(_fileno(f), _O_BINARY) +#elif defined(MSDOS) + #if defined(__HIGHC__) + #define SET_BINMODE(f) setmode(f, O_BINARY) + #else + #define SET_BINMODE(f) setmode(fileno(f), O_BINARY) + #endif +#endif + +static int +sf_getnonblock(pcap_t *p, char *errbuf) +{ + /* + * This is a savefile, not a live capture file, so never say + * it's in non-blocking mode. + */ + return (0); +} + +static int +sf_setnonblock(pcap_t *p, int nonblock, char *errbuf) +{ + /* + * This is a savefile, not a live capture file, so reject + * requests to put it in non-blocking mode. (If it's a + * pipe, it could be put in non-blocking mode, but that + * would significantly complicate the code to read packets, + * as it would have to handle reading partial packets and + * keeping the state of the read.) + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "Savefiles cannot be put into non-blocking mode"); + return (-1); +} + +static int +sf_stats(pcap_t *p, struct pcap_stat *ps) +{ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "Statistics aren't available from savefiles"); + return (-1); +} + +#ifdef WIN32 +static int +sf_setbuff(pcap_t *p, int dim) +{ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "The kernel buffer size cannot be set while reading from a file"); + return (-1); +} + +static int +sf_setmode(pcap_t *p, int mode) +{ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "impossible to set mode while reading from a file"); + return (-1); +} + +static int +sf_setmintocopy(pcap_t *p, int size) +{ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "The mintocopy parameter cannot be set while reading from a file"); + return (-1); +} +#endif + +static int +sf_inject(pcap_t *p, const void *buf _U_, size_t size _U_) +{ + strlcpy(p->errbuf, "Sending packets isn't supported on savefiles", + PCAP_ERRBUF_SIZE); + return (-1); +} + +/* + * Set direction flag: Which packets do we accept on a forwarding + * single device? IN, OUT or both? + */ +static int +sf_setdirection(pcap_t *p, pcap_direction_t d) +{ + snprintf(p->errbuf, sizeof(p->errbuf), + "Setting direction is not supported on savefiles"); + return (-1); +} + +static void +sf_cleanup(pcap_t *p) +{ + if (p->sf.rfile != stdin) + (void)fclose(p->sf.rfile); + if (p->buffer != NULL) + free(p->buffer); + pcap_freecode(&p->fcode); +} + +pcap_t * +pcap_open_offline(const char *fname, char *errbuf) +{ + FILE *fp; + pcap_t *p; + + if (fname[0] == '-' && fname[1] == '\0') + { + fp = stdin; +#if defined(WIN32) || defined(MSDOS) + /* + * We're reading from the standard input, so put it in binary + * mode, as savefiles are binary files. + */ + SET_BINMODE(fp); +#endif + } + else { +#if !defined(WIN32) && !defined(MSDOS) + fp = fopen(fname, "r"); +#else + fp = fopen(fname, "rb"); +#endif + if (fp == NULL) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, "%s: %s", fname, + pcap_strerror(errno)); + return (NULL); + } + } + p = pcap_fopen_offline(fp, errbuf); + if (p == NULL) { + if (fp != stdin) + fclose(fp); + } + return (p); +} + +#ifdef WIN32 +pcap_t* pcap_hopen_offline(intptr_t osfd, char *errbuf) +{ + int fd; + FILE *file; + + fd = _open_osfhandle(osfd, _O_RDONLY); + if ( fd < 0 ) + { + snprintf(errbuf, PCAP_ERRBUF_SIZE, pcap_strerror(errno)); + return NULL; + } + + file = _fdopen(fd, "rb"); + if ( file == NULL ) + { + snprintf(errbuf, PCAP_ERRBUF_SIZE, pcap_strerror(errno)); + return NULL; + } + + return pcap_fopen_offline(file, errbuf); +} +#endif + +static int (*check_headers[])(pcap_t *, bpf_u_int32, FILE *, char *) = { + pcap_check_header, + pcap_ng_check_header +}; + +#define N_FILE_TYPES (sizeof check_headers / sizeof check_headers[0]) + +#ifdef WIN32 +static +#endif +pcap_t * +pcap_fopen_offline(FILE *fp, char *errbuf) +{ + register pcap_t *p; + bpf_u_int32 magic; + size_t amt_read; + u_int i; + + p = pcap_create_common("(savefile)", errbuf); + if (p == NULL) + return (NULL); + + /* + * Read the first 4 bytes of the file; the network analyzer dump + * file formats we support (pcap and pcap-ng), and several other + * formats we might support in the future (such as snoop, DOS and + * Windows Sniffer, and Microsoft Network Monitor) all have magic + * numbers that are unique in their first 4 bytes. + */ + amt_read = fread((char *)&magic, 1, sizeof(magic), fp); + if (amt_read != sizeof(magic)) { + if (ferror(fp)) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "error reading dump file: %s", + pcap_strerror(errno)); + } else { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "truncated dump file; tried to read %lu file header bytes, only got %lu", + (unsigned long)sizeof(magic), + (unsigned long)amt_read); + } + goto bad; + } + + /* + * Try all file types. + */ + for (i = 0; i < N_FILE_TYPES; i++) { + switch ((*check_headers[i])(p, magic, fp, errbuf)) { + + case -1: + /* + * Error trying to read the header. + */ + goto bad; + + case 1: + /* + * Yup, that's it. + */ + goto found; + } + } + + /* + * Well, who knows what this mess is.... + */ + snprintf(errbuf, PCAP_ERRBUF_SIZE, "unknown file format"); + goto bad; + +found: + p->sf.rfile = fp; + +#ifdef PCAP_FDDIPAD + /* Padding only needed for live capture fcode */ + p->fddipad = 0; +#endif + +#if !defined(WIN32) && !defined(MSDOS) + /* + * You can do "select()" and "poll()" on plain files on most + * platforms, and should be able to do so on pipes. + * + * You can't do "select()" on anything other than sockets in + * Windows, so, on Win32 systems, we don't have "selectable_fd". + */ + p->selectable_fd = fileno(fp); +#endif + + p->read_op = pcap_offline_read; + p->inject_op = sf_inject; + p->setfilter_op = install_bpf_program; + p->setdirection_op = sf_setdirection; + p->set_datalink_op = NULL; /* we don't support munging link-layer headers */ + p->getnonblock_op = sf_getnonblock; + p->setnonblock_op = sf_setnonblock; + p->stats_op = sf_stats; +#ifdef WIN32 + p->setbuff_op = sf_setbuff; + p->setmode_op = sf_setmode; + p->setmintocopy_op = sf_setmintocopy; +#endif + p->cleanup_op = sf_cleanup; + p->activated = 1; + + return (p); + bad: + free(p); + return (NULL); +} + +/* + * Read packets from a capture file, and call the callback for each + * packet. + * If cnt > 0, return after 'cnt' packets, otherwise continue until eof. + */ +int +pcap_offline_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user) +{ + struct bpf_insn *fcode; + int status = 0; + int n = 0; + u_char *data; + + while (status == 0) { + struct pcap_pkthdr h; + + /* + * Has "pcap_breakloop()" been called? + * If so, return immediately - if we haven't read any + * packets, clear the flag and return -2 to indicate + * that we were told to break out of the loop, otherwise + * leave the flag set, so that the *next* call will break + * out of the loop without having read any packets, and + * return the number of packets we've processed so far. + */ + if (p->break_loop) { + if (n == 0) { + p->break_loop = 0; + return (-2); + } else + return (n); + } + + status = p->sf.next_packet_op(p, &h, &data); + if (status) { + if (status == 1) + return (0); + return (status); + } + + if ((fcode = p->fcode.bf_insns) == NULL || + bpf_filter(fcode, data, h.len, h.caplen)) { + (*callback)(user, &h, data); + if (++n >= cnt && cnt > 0) + break; + } + } + /*XXX this breaks semantics tcpslice expects */ + return (n); +} diff --git a/scanner.l b/scanner.l new file mode 100644 index 0000000..064e9c8 --- /dev/null +++ b/scanner.l @@ -0,0 +1,466 @@ +%{ +/* + * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/scanner.l,v 1.112 2008-02-06 10:21:30 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef WIN32 +#include +#else /* WIN32 */ +#if HAVE_INTTYPES_H +#include +#elif HAVE_STDINT_H +#include +#endif +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +#include +#endif /* WIN32 */ + +#include +#include + +#include "pcap-int.h" + +#include "gencode.h" +#ifdef INET6 +#ifdef WIN32 +#include + +#ifdef __MINGW32__ +#include "ip6_misc.h" +#endif +#else /* WIN32 */ +#include /* for "struct sockaddr" in "struct addrinfo" */ +#include /* for "struct addrinfo" */ +#endif /* WIN32 */ + +/* Workaround for AIX 4.3 */ +#if !defined(AI_NUMERICHOST) +#define AI_NUMERICHOST 0x04 +#endif +#endif /*INET6*/ +#include +#include "tokdefs.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +static int stoi(char *); +static inline int xdtoi(int); + +#ifdef FLEX_SCANNER +#define YY_NO_INPUT +#define YY_NO_UNPUT +static YY_BUFFER_STATE in_buffer; +#else +static const char *in_buffer; + +#undef getc +#define getc(fp) (*in_buffer == 0 ? EOF : *in_buffer++) +#endif + +#define yylval pcap_lval +extern YYSTYPE yylval; + +%} + +N ([0-9]+|(0X|0x)[0-9A-Fa-f]+) +B ([0-9A-Fa-f][0-9A-Fa-f]?) +B2 ([0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f]) +W ([0-9A-Fa-f][0-9A-Fa-f]?[0-9A-Fa-f]?[0-9A-Fa-f]?) + +%a 18400 +%o 21500 +%e 7600 +%k 4550 +%p 27600 +%n 2000 + +V680 {W}:{W}:{W}:{W}:{W}:{W}:{W}:{W} + +V670 ::{W}:{W}:{W}:{W}:{W}:{W}:{W} +V671 {W}::{W}:{W}:{W}:{W}:{W}:{W} +V672 {W}:{W}::{W}:{W}:{W}:{W}:{W} +V673 {W}:{W}:{W}::{W}:{W}:{W}:{W} +V674 {W}:{W}:{W}:{W}::{W}:{W}:{W} +V675 {W}:{W}:{W}:{W}:{W}::{W}:{W} +V676 {W}:{W}:{W}:{W}:{W}:{W}::{W} +V677 {W}:{W}:{W}:{W}:{W}:{W}:{W}:: + +V660 ::{W}:{W}:{W}:{W}:{W}:{W} +V661 {W}::{W}:{W}:{W}:{W}:{W} +V662 {W}:{W}::{W}:{W}:{W}:{W} +V663 {W}:{W}:{W}::{W}:{W}:{W} +V664 {W}:{W}:{W}:{W}::{W}:{W} +V665 {W}:{W}:{W}:{W}:{W}::{W} +V666 {W}:{W}:{W}:{W}:{W}:{W}:: + +V650 ::{W}:{W}:{W}:{W}:{W} +V651 {W}::{W}:{W}:{W}:{W} +V652 {W}:{W}::{W}:{W}:{W} +V653 {W}:{W}:{W}::{W}:{W} +V654 {W}:{W}:{W}:{W}::{W} +V655 {W}:{W}:{W}:{W}:{W}:: + +V640 ::{W}:{W}:{W}:{W} +V641 {W}::{W}:{W}:{W} +V642 {W}:{W}::{W}:{W} +V643 {W}:{W}:{W}::{W} +V644 {W}:{W}:{W}:{W}:: + +V630 ::{W}:{W}:{W} +V631 {W}::{W}:{W} +V632 {W}:{W}::{W} +V633 {W}:{W}:{W}:: + +V620 ::{W}:{W} +V621 {W}::{W} +V622 {W}:{W}:: + +V610 ::{W} +V611 {W}:: + +V600 :: + +V6604 {W}:{W}:{W}:{W}:{W}:{W}:{N}\.{N}\.{N}\.{N} + +V6504 ::{W}:{W}:{W}:{W}:{W}:{N}\.{N}\.{N}\.{N} +V6514 {W}::{W}:{W}:{W}:{W}:{N}\.{N}\.{N}\.{N} +V6524 {W}:{W}::{W}:{W}:{W}:{N}\.{N}\.{N}\.{N} +V6534 {W}:{W}:{W}::{W}:{W}:{N}\.{N}\.{N}\.{N} +V6544 {W}:{W}:{W}:{W}::{W}:{N}\.{N}\.{N}\.{N} +V6554 {W}:{W}:{W}:{W}:{W}::{N}\.{N}\.{N}\.{N} + +V6404 ::{W}:{W}:{W}:{W}:{N}\.{N}\.{N}\.{N} +V6414 {W}::{W}:{W}:{W}:{N}\.{N}\.{N}\.{N} +V6424 {W}:{W}::{W}:{W}:{N}\.{N}\.{N}\.{N} +V6434 {W}:{W}:{W}::{W}:{N}\.{N}\.{N}\.{N} +V6444 {W}:{W}:{W}:{W}::{N}\.{N}\.{N}\.{N} + +V6304 ::{W}:{W}:{W}:{N}\.{N}\.{N}\.{N} +V6314 {W}::{W}:{W}:{N}\.{N}\.{N}\.{N} +V6324 {W}:{W}::{W}:{N}\.{N}\.{N}\.{N} +V6334 {W}:{W}:{W}::{N}\.{N}\.{N}\.{N} + +V6204 ::{W}:{W}:{N}\.{N}\.{N}\.{N} +V6214 {W}::{W}:{N}\.{N}\.{N}\.{N} +V6224 {W}:{W}::{N}\.{N}\.{N}\.{N} + +V6104 ::{W}:{N}\.{N}\.{N}\.{N} +V6114 {W}::{N}\.{N}\.{N}\.{N} + +V6004 ::{N}\.{N}\.{N}\.{N} + + +V6 ({V680}|{V670}|{V671}|{V672}|{V673}|{V674}|{V675}|{V676}|{V677}|{V660}|{V661}|{V662}|{V663}|{V664}|{V665}|{V666}|{V650}|{V651}|{V652}|{V653}|{V654}|{V655}|{V640}|{V641}|{V642}|{V643}|{V644}|{V630}|{V631}|{V632}|{V633}|{V620}|{V621}|{V622}|{V610}|{V611}|{V600}|{V6604}|{V6504}|{V6514}|{V6524}|{V6534}|{V6544}|{V6554}|{V6404}|{V6414}|{V6424}|{V6434}|{V6444}|{V6304}|{V6314}|{V6324}|{V6334}|{V6204}|{V6214}|{V6224}|{V6104}|{V6114}|{V6004}) + +MAC ({B}:{B}:{B}:{B}:{B}:{B}|{B}\-{B}\-{B}\-{B}\-{B}\-{B}|{B}\.{B}\.{B}\.{B}\.{B}\.{B}|{B2}\.{B2}\.{B2}|{B2}{3}) + + + +%% +dst return DST; +src return SRC; + +link|ether|ppp|slip return LINK; +fddi|tr|wlan return LINK; +arp return ARP; +rarp return RARP; +ip return IP; +sctp return SCTP; +tcp return TCP; +udp return UDP; +icmp return ICMP; +igmp return IGMP; +igrp return IGRP; +pim return PIM; +vrrp return VRRP; +carp return CARP; +radio return RADIO; + +ip6 { +#ifdef INET6 + return IPV6; +#else + bpf_error("%s not supported", yytext); +#endif + } +icmp6 { +#ifdef INET6 + return ICMPV6; +#else + bpf_error("%s not supported", yytext); +#endif + } +ah return AH; +esp return ESP; + +atalk return ATALK; +aarp return AARP; +decnet return DECNET; +lat return LAT; +sca return SCA; +moprc return MOPRC; +mopdl return MOPDL; + +iso return ISO; +esis return ESIS; +es-is return ESIS; +isis return ISIS; +is-is return ISIS; +l1 return L1; +l2 return L2; +iih return IIH; +lsp return LSP; +snp return SNP; +csnp return CSNP; +psnp return PSNP; + +clnp return CLNP; + +stp return STP; + +ipx return IPX; + +netbeui return NETBEUI; + +host return HOST; +net return NET; +mask return NETMASK; +port return PORT; +portrange return PORTRANGE; +proto return PROTO; +protochain { +#ifdef NO_PROTOCHAIN + bpf_error("%s not supported", yytext); +#else + return PROTOCHAIN; +#endif + } + +gateway return GATEWAY; + +type return TYPE; +subtype return SUBTYPE; +direction|dir return DIR; +address1|addr1 return ADDR1; +address2|addr2 return ADDR2; +address3|addr3 return ADDR3; +address4|addr4 return ADDR4; +ra return RA; +ta return TA; + +less return LESS; +greater return GREATER; +byte return CBYTE; +broadcast return TK_BROADCAST; +multicast return TK_MULTICAST; + +and|"&&" return AND; +or|"||" return OR; +not return '!'; + +len|length return LEN; +inbound return INBOUND; +outbound return OUTBOUND; + +vlan return VLAN; +mpls return MPLS; +pppoed return PPPOED; +pppoes return PPPOES; + +lane return LANE; +llc return LLC; +metac return METAC; +bcc return BCC; +oam return OAM; +oamf4 return OAMF4; +oamf4ec return OAMF4EC; +oamf4sc return OAMF4SC; +sc return SC; +ilmic return ILMIC; +vpi return VPI; +vci return VCI; +connectmsg return CONNECTMSG; +metaconnect return METACONNECT; + +on|ifname return PF_IFNAME; +rset|ruleset return PF_RSET; +rnr|rulenum return PF_RNR; +srnr|subrulenum return PF_SRNR; +reason return PF_REASON; +action return PF_ACTION; + +fisu return FISU; +lssu return LSSU; +lsu return LSSU; +msu return MSU; +sio return SIO; +opc return OPC; +dpc return DPC; +sls return SLS; + +[ \r\n\t] ; +[+\-*/:\[\]!<>()&|=] return yytext[0]; +">=" return GEQ; +"<=" return LEQ; +"!=" return NEQ; +"==" return '='; +"<<" return LSH; +">>" return RSH; +${B} { yylval.e = pcap_ether_aton(((char *)yytext)+1); + return AID; } +{MAC} { yylval.e = pcap_ether_aton((char *)yytext); + return EID; } +{N} { yylval.i = stoi((char *)yytext); return NUM; } +({N}\.{N})|({N}\.{N}\.{N})|({N}\.{N}\.{N}\.{N}) { + yylval.s = sdup((char *)yytext); return HID; } +{V6} { +#ifdef INET6 + struct addrinfo hints, *res; + memset(&hints, 0, sizeof(hints)); + hints.ai_family = AF_INET6; + hints.ai_flags = AI_NUMERICHOST; + if (getaddrinfo(yytext, NULL, &hints, &res)) + bpf_error("bogus IPv6 address %s", yytext); + else { + freeaddrinfo(res); + yylval.s = sdup((char *)yytext); return HID6; + } +#else + bpf_error("IPv6 address %s not supported", yytext); +#endif /*INET6*/ + } +{B}:+({B}:+)+ { bpf_error("bogus ethernet address %s", yytext); } +icmptype { yylval.i = 0; return NUM; } +icmpcode { yylval.i = 1; return NUM; } +icmp-echoreply { yylval.i = 0; return NUM; } +icmp-unreach { yylval.i = 3; return NUM; } +icmp-sourcequench { yylval.i = 4; return NUM; } +icmp-redirect { yylval.i = 5; return NUM; } +icmp-echo { yylval.i = 8; return NUM; } +icmp-routeradvert { yylval.i = 9; return NUM; } +icmp-routersolicit { yylval.i = 10; return NUM; } +icmp-timxceed { yylval.i = 11; return NUM; } +icmp-paramprob { yylval.i = 12; return NUM; } +icmp-tstamp { yylval.i = 13; return NUM; } +icmp-tstampreply { yylval.i = 14; return NUM; } +icmp-ireq { yylval.i = 15; return NUM; } +icmp-ireqreply { yylval.i = 16; return NUM; } +icmp-maskreq { yylval.i = 17; return NUM; } +icmp-maskreply { yylval.i = 18; return NUM; } +tcpflags { yylval.i = 13; return NUM; } +tcp-fin { yylval.i = 0x01; return NUM; } +tcp-syn { yylval.i = 0x02; return NUM; } +tcp-rst { yylval.i = 0x04; return NUM; } +tcp-push { yylval.i = 0x08; return NUM; } +tcp-ack { yylval.i = 0x10; return NUM; } +tcp-urg { yylval.i = 0x20; return NUM; } +[A-Za-z0-9]([-_.A-Za-z0-9]*[.A-Za-z0-9])? { + yylval.s = sdup((char *)yytext); return ID; } +"\\"[^ !()\n\t]+ { yylval.s = sdup((char *)yytext + 1); return ID; } +[^ \[\]\t\n\-_.A-Za-z0-9!<>()&|=]+ { + bpf_error("illegal token: %s", yytext); } +. { bpf_error("illegal char '%c'", *yytext); } +%% +void +lex_init(buf) + const char *buf; +{ +#ifdef FLEX_SCANNER + in_buffer = yy_scan_string(buf); +#else + in_buffer = buf; +#endif +} + +/* + * Do any cleanup necessary after parsing. + */ +void +lex_cleanup() +{ +#ifdef FLEX_SCANNER + if (in_buffer != NULL) + yy_delete_buffer(in_buffer); + in_buffer = NULL; +#endif +} + +/* + * Also define a yywrap. Note that if we're using flex, it will + * define a macro to map this identifier to pcap_wrap. + */ +int +yywrap() +{ + return 1; +} + +/* Hex digit to integer. */ +static inline int +xdtoi(c) + register int c; +{ + if (isdigit(c)) + return c - '0'; + else if (islower(c)) + return c - 'a' + 10; + else + return c - 'A' + 10; +} + +/* + * Convert string to integer. Just like atoi(), but checks for + * preceding 0x or 0 and uses hex or octal instead of decimal. + */ +static int +stoi(s) + char *s; +{ + int base = 10; + int n = 0; + + if (*s == '0') { + if (s[1] == 'x' || s[1] == 'X') { + s += 2; + base = 16; + } + else { + base = 8; + s += 1; + } + } + while (*s) + n = n * base + xdtoi(*s++); + + return n; +} diff --git a/sf-pcap-ng.c b/sf-pcap-ng.c new file mode 100644 index 0000000..7eb6db7 --- /dev/null +++ b/sf-pcap-ng.c @@ -0,0 +1,1109 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * sf-pcap-ng.c - pcap-ng-file-format-specific code from savefile.c + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header$ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef WIN32 +#include +#else /* WIN32 */ +#if HAVE_INTTYPES_H +#include +#elif HAVE_STDINT_H +#include +#endif +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +#include +#endif /* WIN32 */ + +#include +#include +#include +#include +#include + +#include "pcap-int.h" + +#include "pcap-common.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +#include "sf-pcap-ng.h" + +/* + * Block types. + */ + +/* + * Common part at the beginning of all blocks. + */ +struct block_header { + bpf_u_int32 block_type; + bpf_u_int32 total_length; +}; + +/* + * Common trailer at the end of all blocks. + */ +struct block_trailer { + bpf_u_int32 total_length; +}; + +/* + * Common options. + */ +#define OPT_ENDOFOPT 0 /* end of options */ +#define OPT_COMMENT 1 /* comment string */ + +/* + * Option header. + */ +struct option_header { + u_short option_code; + u_short option_length; +}; + +/* + * Structures for the part of each block type following the common + * part. + */ + +/* + * Section Header Block. + */ +#define BT_SHB 0x0A0D0D0A + +struct section_header_block { + bpf_u_int32 byte_order_magic; + u_short major_version; + u_short minor_version; + u_int64_t section_length; + /* followed by options and trailer */ +}; + +/* + * Byte-order magic value. + */ +#define BYTE_ORDER_MAGIC 0x1A2B3C4D + +/* + * Current version number. If major_version isn't PCAP_NG_VERSION_MAJOR, + * that means that this code can't read the file. + */ +#define PCAP_NG_VERSION_MAJOR 1 + +/* + * Interface Description Block. + */ +#define BT_IDB 0x00000001 + +struct interface_description_block { + u_short linktype; + u_short reserved; + bpf_u_int32 snaplen; + /* followed by options and trailer */ +}; + +/* + * Options in the IDB. + */ +#define IF_NAME 2 /* interface name string */ +#define IF_DESCRIPTION 3 /* interface description string */ +#define IF_IPV4ADDR 4 /* interface's IPv4 address and netmask */ +#define IF_IPV6ADDR 5 /* interface's IPv6 address and prefix length */ +#define IF_MACADDR 6 /* interface's MAC address */ +#define IF_EUIADDR 7 /* interface's EUI address */ +#define IF_SPEED 8 /* interface's speed, in bits/s */ +#define IF_TSRESOL 9 /* interface's time stamp resolution */ +#define IF_TZONE 10 /* interface's time zone */ +#define IF_FILTER 11 /* filter used when capturing on interface */ +#define IF_OS 12 /* string OS on which capture on this interface was done */ +#define IF_FCSLEN 13 /* FCS length for this interface */ +#define IF_TSOFFSET 14 /* time stamp offset for this interface */ + +/* + * Enhanced Packet Block. + */ +#define BT_EPB 0x00000006 + +struct enhanced_packet_block { + bpf_u_int32 interface_id; + bpf_u_int32 timestamp_high; + bpf_u_int32 timestamp_low; + bpf_u_int32 caplen; + bpf_u_int32 len; + /* followed by packet data, options, and trailer */ +}; + +/* + * Simple Packet Block. + */ +#define BT_SPB 0x00000003 + +struct simple_packet_block { + bpf_u_int32 len; + /* followed by packet data and trailer */ +}; + +/* + * Packet Block. + */ +#define BT_PB 0x00000002 + +struct packet_block { + u_short interface_id; + u_short drops_count; + bpf_u_int32 timestamp_high; + bpf_u_int32 timestamp_low; + bpf_u_int32 caplen; + bpf_u_int32 len; + /* followed by packet data, options, and trailer */ +}; + +/* + * Block cursor - used when processing the contents of a block. + * Contains a pointer into the data being processed and a count + * of bytes remaining in the block. + */ +struct block_cursor { + u_char *data; + size_t data_remaining; + bpf_u_int32 block_type; +}; + +static int pcap_ng_next_packet(pcap_t *p, struct pcap_pkthdr *hdr, + u_char **data); + +static int +read_bytes(FILE *fp, void *buf, size_t bytes_to_read, int fail_on_eof, + char *errbuf) +{ + size_t amt_read; + + amt_read = fread(buf, 1, bytes_to_read, fp); + if (amt_read != bytes_to_read) { + if (ferror(fp)) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "error reading dump file: %s", + pcap_strerror(errno)); + } else { + if (amt_read == 0 && !fail_on_eof) + return (0); /* EOF */ + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "truncated dump file; tried to read %lu bytes, only got %lu", + (unsigned long)bytes_to_read, + (unsigned long)amt_read); + } + return (-1); + } + return (1); +} + +static int +read_block(FILE *fp, pcap_t *p, struct block_cursor *cursor, char *errbuf) +{ + int status; + struct block_header bhdr; + + status = read_bytes(fp, &bhdr, sizeof(bhdr), 0, errbuf); + if (status <= 0) + return (status); /* error or EOF */ + + if (p->sf.swapped) { + bhdr.block_type = SWAPLONG(bhdr.block_type); + bhdr.total_length = SWAPLONG(bhdr.total_length); + } + + /* + * Is this block "too big"? + * + * We choose 16MB as "too big", for now, so that we handle + * "reasonably" large buffers but don't chew up all the + * memory if we read a malformed file. + */ + if (bhdr.total_length > 16*1024*1024) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "pcap-ng block size %u > maximum %u", + bhdr.total_length, 16*1024*1024); + return (-1); + } + + /* + * Is this block "too small" - i.e., is it shorter than a block + * header plus a block trailer? + */ + if (bhdr.total_length < sizeof(struct block_header) + + sizeof(struct block_trailer)) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "block in pcap-ng dump file has a length of %u < %lu", + bhdr.total_length, + (unsigned long)(sizeof(struct block_header) + sizeof(struct block_trailer))); + return (-1); + } + + /* + * Is the buffer big enough? + */ + if (p->bufsize < bhdr.total_length) { + /* + * No - make it big enough. + */ + p->buffer = realloc(p->buffer, bhdr.total_length); + if (p->buffer == NULL) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, "out of memory"); + return (-1); + } + } + + /* + * Copy the stuff we've read to the buffer, and read the rest + * of the block. + */ + memcpy(p->buffer, &bhdr, sizeof(bhdr)); + if (read_bytes(fp, p->buffer + sizeof(bhdr), + bhdr.total_length - sizeof(bhdr), 1, errbuf) == -1) + return (-1); + + /* + * Initialize the cursor. + */ + cursor->data = p->buffer + sizeof(bhdr); + cursor->data_remaining = bhdr.total_length - sizeof(bhdr) - + sizeof(struct block_trailer); + cursor->block_type = bhdr.block_type; + return (1); +} + +static void * +get_from_block_data(struct block_cursor *cursor, size_t chunk_size, + char *errbuf) +{ + void *data; + + /* + * Make sure we have the specified amount of data remaining in + * the block data. + */ + if (cursor->data_remaining < chunk_size) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "block of type %u in pcap-ng dump file is too short", + cursor->block_type); + return (NULL); + } + + /* + * Return the current pointer, and skip past the chunk. + */ + data = cursor->data; + cursor->data += chunk_size; + cursor->data_remaining -= chunk_size; + return (data); +} + +static struct option_header * +get_opthdr_from_block_data(pcap_t *p, struct block_cursor *cursor, char *errbuf) +{ + struct option_header *opthdr; + + opthdr = get_from_block_data(cursor, sizeof(*opthdr), errbuf); + if (opthdr == NULL) { + /* + * Option header is cut short. + */ + return (NULL); + } + + /* + * Byte-swap it if necessary. + */ + if (p->sf.swapped) { + opthdr->option_code = SWAPSHORT(opthdr->option_code); + opthdr->option_length = SWAPSHORT(opthdr->option_length); + } + + return (opthdr); +} + +static void * +get_optvalue_from_block_data(struct block_cursor *cursor, + struct option_header *opthdr, char *errbuf) +{ + size_t padded_option_len; + void *optvalue; + + /* Pad option length to 4-byte boundary */ + padded_option_len = opthdr->option_length; + padded_option_len = ((padded_option_len + 3)/4)*4; + + optvalue = get_from_block_data(cursor, padded_option_len, errbuf); + if (optvalue == NULL) { + /* + * Option value is cut short. + */ + return (NULL); + } + + return (optvalue); +} + +static int +process_idb_options(pcap_t *p, struct block_cursor *cursor, u_int *tsresol, + u_int64_t *tsoffset, char *errbuf) +{ + struct option_header *opthdr; + void *optvalue; + int saw_tsresol, saw_tsoffset; + u_char tsresol_opt; + u_int i; + + saw_tsresol = 0; + saw_tsoffset = 0; + while (cursor->data_remaining != 0) { + /* + * Get the option header. + */ + opthdr = get_opthdr_from_block_data(p, cursor, errbuf); + if (opthdr == NULL) { + /* + * Option header is cut short. + */ + return (-1); + } + + /* + * Get option value. + */ + optvalue = get_optvalue_from_block_data(cursor, opthdr, + errbuf); + if (optvalue == NULL) { + /* + * Option value is cut short. + */ + return (-1); + } + + switch (opthdr->option_code) { + + case OPT_ENDOFOPT: + if (opthdr->option_length != 0) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "Interface Description Block has opt_endofopt option with length %u != 0", + opthdr->option_length); + return (-1); + } + goto done; + + case IF_TSRESOL: + if (opthdr->option_length != 1) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "Interface Description Block has if_tsresol option with length %u != 1", + opthdr->option_length); + return (-1); + } + if (saw_tsresol) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "Interface Description Block has more than one if_tsresol option"); + return (-1); + } + saw_tsresol = 1; + tsresol_opt = *(u_int *)optvalue; + if (tsresol_opt & 0x80) { + /* + * Resolution is negative power of 2. + */ + *tsresol = 1 << (tsresol_opt & 0x7F); + } else { + /* + * Resolution is negative power of 10. + */ + *tsresol = 1; + for (i = 0; i < tsresol_opt; i++) + *tsresol *= 10; + } + if (*tsresol == 0) { + /* + * Resolution is too high. + */ + if (tsresol_opt & 0x80) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "Interface Description Block if_tsresol option resolution 2^-%u is too high", + tsresol_opt & 0x7F); + } else { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "Interface Description Block if_tsresol option resolution 10^-%u is too high", + tsresol_opt); + } + return (-1); + } + break; + + case IF_TSOFFSET: + if (opthdr->option_length != 8) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "Interface Description Block has if_tsoffset option with length %u != 8", + opthdr->option_length); + return (-1); + } + if (saw_tsoffset) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "Interface Description Block has more than one if_tsoffset option"); + return (-1); + } + saw_tsoffset = 1; + memcpy(tsoffset, optvalue, sizeof(*tsoffset)); + if (p->sf.swapped) + *tsoffset = SWAPLL(*tsoffset); + break; + + default: + break; + } + } + +done: + return (0); +} + +/* + * Check whether this is a pcap-ng savefile and, if it is, extract the + * relevant information from the header. + */ +int +pcap_ng_check_header(pcap_t *p, bpf_u_int32 magic, FILE *fp, char *errbuf) +{ + size_t amt_read; + bpf_u_int32 total_length; + bpf_u_int32 byte_order_magic; + struct block_header *bhdrp; + struct section_header_block *shbp; + int status; + struct block_cursor cursor; + struct interface_description_block *idbp; + + /* + * Check whether the first 4 bytes of the file are the block + * type for a pcap-ng savefile. + */ + if (magic != BT_SHB) { + /* + * XXX - check whether this looks like what the block + * type would be after being munged by mapping between + * UN*X and DOS/Windows text file format and, if it + * does, look for the byte-order magic number in + * the appropriate place and, if we find it, report + * this as possibly being a pcap-ng file transferred + * between UN*X and Windows in text file format? + */ + return (0); /* nope */ + } + + /* + * OK, they are. However, that's just \n\r\r\n, so it could, + * conceivably, be an ordinary text file. + * + * It could not, however, conceivably be any other type of + * capture file, so we can read the rest of the putative + * Section Header Block; put the block type in the common + * header, read the rest of the common header and the + * fixed-length portion of the SHB, and look for the byte-order + * magic value. + */ + amt_read = fread(&total_length, 1, sizeof(total_length), fp); + if (amt_read < sizeof(total_length)) { + if (ferror(fp)) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "error reading dump file: %s", + pcap_strerror(errno)); + return (-1); /* fail */ + } + + /* + * Possibly a weird short text file, so just say + * "not pcap-ng". + */ + return (0); + } + amt_read = fread(&byte_order_magic, 1, sizeof(byte_order_magic), fp); + if (amt_read < sizeof(byte_order_magic)) { + if (ferror(fp)) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "error reading dump file: %s", + pcap_strerror(errno)); + return (-1); /* fail */ + } + + /* + * Possibly a weird short text file, so just say + * "not pcap-ng". + */ + return (0); + } + if (byte_order_magic != BYTE_ORDER_MAGIC) { + byte_order_magic = SWAPLONG(byte_order_magic); + if (byte_order_magic != BYTE_ORDER_MAGIC) { + /* + * Not a pcap-ng file. + */ + return (0); + } + p->sf.swapped = 1; + total_length = SWAPLONG(total_length); + } + + /* + * Check the sanity of the total length. + */ + if (total_length < sizeof(*bhdrp) + sizeof(*shbp) + sizeof(struct block_trailer)) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "Section Header Block in pcap-ng dump file has a length of %u < %lu", + total_length, + (unsigned long)(sizeof(*bhdrp) + sizeof(*shbp) + sizeof(struct block_trailer))); + return (-1); + } + + /* + * Allocate a buffer into which to read blocks. We default to + * the maximum of: + * + * the total length of the SHB for which we read the header; + * + * 2K, which should be more than large enough for an Enhanced + * Packet Block containing a full-size Ethernet frame, and + * leaving room for some options. + * + * If we find a bigger block, we reallocate the buffer. + */ + p->bufsize = 2048; + if (p->bufsize < total_length) + p->bufsize = total_length; + p->buffer = malloc(p->bufsize); + if (p->buffer == NULL) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, "out of memory"); + return (-1); + } + + /* + * Copy the stuff we've read to the buffer, and read the rest + * of the SHB. + */ + bhdrp = (struct block_header *)p->buffer; + shbp = (struct section_header_block *)(p->buffer + sizeof(struct block_header)); + bhdrp->block_type = magic; + bhdrp->total_length = total_length; + shbp->byte_order_magic = byte_order_magic; + if (read_bytes(fp, + p->buffer + (sizeof(magic) + sizeof(total_length) + sizeof(byte_order_magic)), + total_length - (sizeof(magic) + sizeof(total_length) + sizeof(byte_order_magic)), + 1, errbuf) == -1) + goto fail; + + if (p->sf.swapped) { + /* + * Byte-swap the fields we've read. + */ + shbp->major_version = SWAPSHORT(shbp->major_version); + shbp->minor_version = SWAPSHORT(shbp->minor_version); + + /* + * XXX - we don't care about the section length. + */ + } + if (shbp->major_version != PCAP_NG_VERSION_MAJOR) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "unknown pcap-ng savefile major version number %u", + shbp->major_version); + goto fail; + } + p->sf.version_major = shbp->major_version; + p->sf.version_minor = shbp->minor_version; + + /* + * Set the default time stamp resolution and offset. + */ + p->sf.tsresol = 1000000; /* microsecond resolution */ + p->sf.tsscale = 1; /* multiply by 1 to scale to microseconds */ + p->sf.tsoffset = 0; /* absolute timestamps */ + + /* + * Now start looking for an Interface Description Block. + */ + for (;;) { + /* + * Read the next block. + */ + status = read_block(fp, p, &cursor, errbuf); + if (status == 0) { + /* EOF - no IDB in this file */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "the capture file has no Interface Description Blocks"); + goto fail; + } + if (status == -1) + goto fail; /* error */ + switch (cursor.block_type) { + + case BT_IDB: + /* + * Get a pointer to the fixed-length portion of the + * IDB. + */ + idbp = get_from_block_data(&cursor, sizeof(*idbp), + errbuf); + if (idbp == NULL) + goto fail; /* error */ + + /* + * Byte-swap it if necessary. + */ + if (p->sf.swapped) { + idbp->linktype = SWAPSHORT(idbp->linktype); + idbp->snaplen = SWAPLONG(idbp->snaplen); + } + + /* + * Count this interface. + */ + p->sf.ifcount++; + + /* + * Now look for various time stamp options, so + * we know how to interpret the time stamps. + */ + if (process_idb_options(p, &cursor, &p->sf.tsresol, + &p->sf.tsoffset, errbuf) == -1) + goto fail; + + /* + * Compute the scaling factor to convert the + * sub-second part of the time stamp to + * microseconds. + */ + if (p->sf.tsresol > 1000000) { + /* + * Higher than microsecond resolution; + * scale down to microseconds. + */ + p->sf.tsscale = (p->sf.tsresol / 1000000); + } else { + /* + * Lower than microsecond resolution; + * scale up to microseconds. + */ + p->sf.tsscale = (1000000 / p->sf.tsresol); + } + goto done; + + case BT_EPB: + case BT_SPB: + case BT_PB: + /* + * Saw a packet before we saw any IDBs. That's + * not valid, as we don't know what link-layer + * encapsulation the packet has. + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "the capture file has a packet block before any Interface Description Blocks"); + goto fail; + + default: + /* + * Just ignore it. + */ + break; + } + } + +done: + p->tzoff = 0; /* XXX - not used in pcap */ + p->snapshot = idbp->snaplen; + p->linktype = linktype_to_dlt(idbp->linktype); + p->linktype_ext = 0; + + p->sf.next_packet_op = pcap_ng_next_packet; + + return (1); + +fail: + free(p->buffer); + return (-1); +} + +/* + * Read and return the next packet from the savefile. Return the header + * in hdr and a pointer to the contents in data. Return 0 on success, 1 + * if there were no more packets, and -1 on an error. + */ +static int +pcap_ng_next_packet(pcap_t *p, struct pcap_pkthdr *hdr, u_char **data) +{ + struct block_cursor cursor; + int status; + struct enhanced_packet_block *epbp; + struct simple_packet_block *spbp; + struct packet_block *pbp; + bpf_u_int32 interface_id = 0xFFFFFFFF; + struct interface_description_block *idbp; + struct section_header_block *shbp; + FILE *fp = p->sf.rfile; + u_int tsresol; + u_int64_t tsoffset; + u_int64_t t, sec, frac; + + /* + * Look for an Enhanced Packet Block, a Simple Packet Block, + * or a Packet Block. + */ + for (;;) { + /* + * Read the block type and length; those are common + * to all blocks. + */ + status = read_block(fp, p, &cursor, p->errbuf); + if (status == 0) + return (1); /* EOF */ + if (status == -1) + return (-1); /* error */ + switch (cursor.block_type) { + + case BT_EPB: + /* + * Get a pointer to the fixed-length portion of the + * EPB. + */ + epbp = get_from_block_data(&cursor, sizeof(*epbp), + p->errbuf); + if (epbp == NULL) + return (-1); /* error */ + + /* + * Byte-swap it if necessary. + */ + if (p->sf.swapped) { + /* these were written in opposite byte order */ + interface_id = SWAPLONG(epbp->interface_id); + hdr->caplen = SWAPLONG(epbp->caplen); + hdr->len = SWAPLONG(epbp->len); + t = ((u_int64_t)SWAPLONG(epbp->timestamp_high)) << 32 | + SWAPLONG(epbp->timestamp_low); + } else { + interface_id = epbp->interface_id; + hdr->caplen = epbp->caplen; + hdr->len = epbp->len; + t = ((u_int64_t)epbp->timestamp_high) << 32 | + epbp->timestamp_low; + } + goto found; + + case BT_SPB: + /* + * Get a pointer to the fixed-length portion of the + * SPB. + */ + spbp = get_from_block_data(&cursor, sizeof(*spbp), + p->errbuf); + if (spbp == NULL) + return (-1); /* error */ + + /* + * SPB packets are assumed to have arrived on + * the first interface. + */ + interface_id = 0; + + /* + * Byte-swap it if necessary. + */ + if (p->sf.swapped) { + /* these were written in opposite byte order */ + hdr->len = SWAPLONG(spbp->len); + } else + hdr->len = spbp->len; + + /* + * The SPB doesn't give the captured length; + * it's the minimum of the snapshot length + * and the packet length. + */ + hdr->caplen = hdr->len; + if (hdr->caplen > p->snapshot) + hdr->caplen = p->snapshot; + t = 0; /* no time stamps */ + goto found; + + case BT_PB: + /* + * Get a pointer to the fixed-length portion of the + * PB. + */ + pbp = get_from_block_data(&cursor, sizeof(*pbp), + p->errbuf); + if (pbp == NULL) + return (-1); /* error */ + + /* + * Byte-swap it if necessary. + */ + if (p->sf.swapped) { + /* these were written in opposite byte order */ + interface_id = SWAPSHORT(pbp->interface_id); + hdr->caplen = SWAPLONG(pbp->caplen); + hdr->len = SWAPLONG(pbp->len); + t = ((u_int64_t)SWAPLONG(pbp->timestamp_high)) << 32 | + SWAPLONG(pbp->timestamp_low); + } else { + interface_id = pbp->interface_id; + hdr->caplen = pbp->caplen; + hdr->len = pbp->len; + t = ((u_int64_t)pbp->timestamp_high) << 32 | + pbp->timestamp_low; + } + goto found; + + case BT_IDB: + /* + * Interface Description Block. Get a pointer + * to its fixed-length portion. + */ + idbp = get_from_block_data(&cursor, sizeof(*idbp), + p->errbuf); + if (idbp == NULL) + return (-1); /* error */ + + /* + * Byte-swap it if necessary. + */ + if (p->sf.swapped) { + idbp->linktype = SWAPSHORT(idbp->linktype); + idbp->snaplen = SWAPLONG(idbp->snaplen); + } + + /* + * If the link-layer type or snapshot length + * differ from the ones for the first IDB we + * saw, quit. + * + * XXX - just discard packets from those + * interfaces? + */ + if (p->linktype != idbp->linktype) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "an interface has a type %u different from the type of the first interface", + idbp->linktype); + return (-1); + } + if (p->snapshot != idbp->snaplen) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "an interface has a snapshot length %u different from the type of the first interface", + idbp->snaplen); + return (-1); + } + + /* + * Count this interface. + */ + p->sf.ifcount++; + + /* + * Set the default time stamp resolution and offset. + */ + tsresol = 1000000; /* microsecond resolution */ + tsoffset = 0; /* absolute timestamps */ + + /* + * Now look for various time stamp options, to + * make sure they're the same. + * + * XXX - we could, in theory, handle multiple + * different resolutions and offsets, but we + * don't do so for now. + */ + if (process_idb_options(p, &cursor, &tsresol, &tsoffset, + p->errbuf) == -1) + return (-1); + if (tsresol != p->sf.tsresol) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "an interface has a time stamp resolution different from the time stamp resolution of the first interface"); + return (-1); + } + if (tsoffset != p->sf.tsoffset) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "an interface has a time stamp offset different from the time stamp offset of the first interface"); + return (-1); + } + break; + + case BT_SHB: + /* + * Section Header Block. Get a pointer + * to its fixed-length portion. + */ + shbp = get_from_block_data(&cursor, sizeof(*shbp), + p->errbuf); + if (shbp == NULL) + return (-1); /* error */ + + /* + * Assume the byte order of this section is + * the same as that of the previous section. + * We'll check for that later. + */ + if (p->sf.swapped) { + shbp->byte_order_magic = + SWAPLONG(shbp->byte_order_magic); + shbp->major_version = + SWAPSHORT(shbp->major_version); + } + + /* + * Make sure the byte order doesn't change; + * pcap_is_swapped() shouldn't change its + * return value in the middle of reading a capture. + */ + switch (shbp->byte_order_magic) { + + case BYTE_ORDER_MAGIC: + /* + * OK. + */ + break; + + case SWAPLONG(BYTE_ORDER_MAGIC): + /* + * Byte order changes. + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "the file has sections with different byte orders"); + return (-1); + + default: + /* + * Not a valid SHB. + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "the file has a section with a bad byte order magic field"); + return (-1); + } + + /* + * Make sure the major version is the version + * we handle. + */ + if (shbp->major_version != PCAP_NG_VERSION_MAJOR) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "unknown pcap-ng savefile major version number %u", + shbp->major_version); + return (-1); + } + + /* + * Reset the interface count; this section should + * have its own set of IDBs. If any of them + * don't have the same interface type, snapshot + * length, or resolution as the first interface + * we saw, we'll fail. (And if we don't see + * any IDBs, we'll fail when we see a packet + * block.) + */ + p->sf.ifcount = 0; + break; + + default: + /* + * Not a packet block, IDB, or SHB; ignore it. + */ + break; + } + } + +found: + /* + * Is the interface ID an interface we know? + */ + if (interface_id >= p->sf.ifcount) { + /* + * Yes. Fail. + */ + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "a packet arrived on interface %u, but there's no Interface Description Block for that interface", + interface_id); + return (-1); + } + + /* + * Convert the time stamp to a struct timeval. + */ + sec = t / p->sf.tsresol + p->sf.tsoffset; + frac = t % p->sf.tsresol; + if (p->sf.tsresol > 1000000) { + /* + * Higher than microsecond resolution; scale down to + * microseconds. + */ + frac /= p->sf.tsscale; + } else { + /* + * Lower than microsecond resolution; scale up to + * microseconds. + */ + frac *= p->sf.tsscale; + } + hdr->ts.tv_sec = sec; + hdr->ts.tv_usec = frac; + + /* + * Get a pointer to the packet data. + */ + *data = get_from_block_data(&cursor, hdr->caplen, p->errbuf); + if (*data == NULL) + return (-1); + + if (p->sf.swapped) { + /* + * Convert pseudo-headers from the byte order of + * the host on which the file was saved to our + * byte order, as necessary. + */ + switch (p->linktype) { + + case DLT_USB_LINUX: + swap_linux_usb_header(hdr, *data, 0); + break; + + case DLT_USB_LINUX_MMAPPED: + swap_linux_usb_header(hdr, *data, 1); + break; + } + } + + return (0); +} diff --git a/sf-pcap-ng.h b/sf-pcap-ng.h new file mode 100644 index 0000000..cc55182 --- /dev/null +++ b/sf-pcap-ng.h @@ -0,0 +1,31 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * sf-pcap-ng.h - pcap-ng-file-format-specific routines + * + * Used to read pcap-ng savefiles. + */ + +#ifndef sf_pcap_ng_h +#define sf_pcap_ng_h + +extern int pcap_ng_check_header(pcap_t *, bpf_u_int32, FILE *, char *); + +#endif diff --git a/sf-pcap.c b/sf-pcap.c new file mode 100644 index 0000000..2b31a2b --- /dev/null +++ b/sf-pcap.c @@ -0,0 +1,618 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * sf-pcap.c - libpcap-file-format-specific code from savefile.c + * Extraction/creation by Jeffrey Mogul, DECWRL + * Modified by Steve McCanne, LBL. + * + * Used to save the received packet headers, after filtering, to + * a file, and then read them later. + * The first record in the file contains saved values for the machine + * dependent values so we can print the dump file on any architecture. + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header$ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef WIN32 +#include +#else /* WIN32 */ +#if HAVE_INTTYPES_H +#include +#elif HAVE_STDINT_H +#include +#endif +#ifdef HAVE_SYS_BITYPES_H +#include +#endif +#include +#endif /* WIN32 */ + +#include +#include +#include +#include +#include + +#include "pcap-int.h" + +#include "pcap-common.h" + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +#include "sf-pcap.h" + +/* + * Setting O_BINARY on DOS/Windows is a bit tricky + */ +#if defined(WIN32) + #define SET_BINMODE(f) _setmode(_fileno(f), _O_BINARY) +#elif defined(MSDOS) + #if defined(__HIGHC__) + #define SET_BINMODE(f) setmode(f, O_BINARY) + #else + #define SET_BINMODE(f) setmode(fileno(f), O_BINARY) + #endif +#endif + +/* + * Standard libpcap format. + */ +#define TCPDUMP_MAGIC 0xa1b2c3d4 + +/* + * Alexey Kuznetzov's modified libpcap format. + */ +#define KUZNETZOV_TCPDUMP_MAGIC 0xa1b2cd34 + +/* + * Reserved for Francisco Mesquita + * for another modified format. + */ +#define FMESQUITA_TCPDUMP_MAGIC 0xa1b234cd + +/* + * Navtel Communcations' format, with nanosecond timestamps, + * as per a request from Dumas Hwang . + */ +#define NAVTEL_TCPDUMP_MAGIC 0xa12b3c4d + +/* + * Normal libpcap format, except for seconds/nanoseconds timestamps, + * as per a request by Ulf Lamping + */ +#define NSEC_TCPDUMP_MAGIC 0xa1b23c4d + +/* + * Mechanism for storing information about a capture in the upper + * 6 bits of a linktype value in a capture file. + * + * LT_LINKTYPE_EXT(x) extracts the additional information. + * + * The rest of the bits are for a value describing the link-layer + * value. LT_LINKTYPE(x) extracts that value. + */ +#define LT_LINKTYPE(x) ((x) & 0x03FFFFFF) +#define LT_LINKTYPE_EXT(x) ((x) & 0xFC000000) + +static int pcap_next_packet(pcap_t *p, struct pcap_pkthdr *hdr, u_char **datap); + +/* + * Check whether this is a pcap savefile and, if it is, extract the + * relevant information from the header. + */ +int +pcap_check_header(pcap_t *p, bpf_u_int32 magic, FILE *fp, char *errbuf) +{ + struct pcap_file_header hdr; + size_t amt_read; + + /* + * Check whether the first 4 bytes of the file are the magic + * number for a pcap savefile, or for a byte-swapped pcap + * savefile. + */ + if (magic != TCPDUMP_MAGIC && magic != KUZNETZOV_TCPDUMP_MAGIC) { + magic = SWAPLONG(magic); + if (magic != TCPDUMP_MAGIC && magic != KUZNETZOV_TCPDUMP_MAGIC) + return (0); /* nope */ + p->sf.swapped = 1; + } + + /* + * They are. Put the magic number in the header, and read + * the rest of the header. + */ + hdr.magic = magic; + amt_read = fread(((char *)&hdr) + sizeof hdr.magic, 1, + sizeof(hdr) - sizeof(hdr.magic), fp); + if (amt_read != sizeof(hdr) - sizeof(hdr.magic)) { + if (ferror(fp)) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "error reading dump file: %s", + pcap_strerror(errno)); + } else { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "truncated dump file; tried to read %lu file header bytes, only got %lu", + (unsigned long)sizeof(hdr), + (unsigned long)amt_read); + } + return (-1); + } + + /* + * If it's a byte-swapped capture file, byte-swap the header. + */ + if (p->sf.swapped) { + hdr.version_major = SWAPSHORT(hdr.version_major); + hdr.version_minor = SWAPSHORT(hdr.version_minor); + hdr.thiszone = SWAPLONG(hdr.thiszone); + hdr.sigfigs = SWAPLONG(hdr.sigfigs); + hdr.snaplen = SWAPLONG(hdr.snaplen); + hdr.linktype = SWAPLONG(hdr.linktype); + } + + if (hdr.version_major < PCAP_VERSION_MAJOR) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, + "archaic pcap savefile format"); + return (-1); + } + p->sf.version_major = hdr.version_major; + p->sf.version_minor = hdr.version_minor; + p->tzoff = hdr.thiszone; + p->snapshot = hdr.snaplen; + p->linktype = linktype_to_dlt(LT_LINKTYPE(hdr.linktype)); + p->linktype_ext = LT_LINKTYPE_EXT(hdr.linktype); + + p->sf.next_packet_op = pcap_next_packet; + + /* + * We interchanged the caplen and len fields at version 2.3, + * in order to match the bpf header layout. But unfortunately + * some files were written with version 2.3 in their headers + * but without the interchanged fields. + * + * In addition, DG/UX tcpdump writes out files with a version + * number of 543.0, and with the caplen and len fields in the + * pre-2.3 order. + */ + switch (hdr.version_major) { + + case 2: + if (hdr.version_minor < 3) + p->sf.lengths_swapped = SWAPPED; + else if (hdr.version_minor == 3) + p->sf.lengths_swapped = MAYBE_SWAPPED; + else + p->sf.lengths_swapped = NOT_SWAPPED; + break; + + case 543: + p->sf.lengths_swapped = SWAPPED; + break; + + default: + p->sf.lengths_swapped = NOT_SWAPPED; + break; + } + + if (magic == KUZNETZOV_TCPDUMP_MAGIC) { + /* + * XXX - the patch that's in some versions of libpcap + * changes the packet header but not the magic number, + * and some other versions with this magic number have + * some extra debugging information in the packet header; + * we'd have to use some hacks^H^H^H^H^Hheuristics to + * detect those variants. + * + * Ethereal does that, but it does so by trying to read + * the first two packets of the file with each of the + * record header formats. That currently means it seeks + * backwards and retries the reads, which doesn't work + * on pipes. We want to be able to read from a pipe, so + * that strategy won't work; we'd have to buffer some + * data ourselves and read from that buffer in order to + * make that work. + */ + p->sf.hdrsize = sizeof(struct pcap_sf_patched_pkthdr); + + if (p->linktype == DLT_EN10MB) { + /* + * This capture might have been done in raw mode + * or cooked mode. + * + * If it was done in cooked mode, p->snapshot was + * passed to recvfrom() as the buffer size, meaning + * that the most packet data that would be copied + * would be p->snapshot. However, a faked Ethernet + * header would then have been added to it, so the + * most data that would be in a packet in the file + * would be p->snapshot + 14. + * + * We can't easily tell whether the capture was done + * in raw mode or cooked mode, so we'll assume it was + * cooked mode, and add 14 to the snapshot length. + * That means that, for a raw capture, the snapshot + * length will be misleading if you use it to figure + * out why a capture doesn't have all the packet data, + * but there's not much we can do to avoid that. + */ + p->snapshot += 14; + } + } else + p->sf.hdrsize = sizeof(struct pcap_sf_pkthdr); + + /* + * Allocate a buffer for the packet data. + */ + p->bufsize = p->snapshot; + if (p->bufsize <= 0) { + /* + * Bogus snapshot length; use 64KiB as a fallback. + */ + p->bufsize = 65536; + } + p->buffer = malloc(p->bufsize); + if (p->buffer == NULL) { + snprintf(errbuf, PCAP_ERRBUF_SIZE, "out of memory"); + return (-1); + } + + return (1); +} + +/* + * Read and return the next packet from the savefile. Return the header + * in hdr and a pointer to the contents in data. Return 0 on success, 1 + * if there were no more packets, and -1 on an error. + */ +static int +pcap_next_packet(pcap_t *p, struct pcap_pkthdr *hdr, u_char **data) +{ + struct pcap_sf_patched_pkthdr sf_hdr; + FILE *fp = p->sf.rfile; + size_t amt_read; + bpf_u_int32 t; + + /* + * Read the packet header; the structure we use as a buffer + * is the longer structure for files generated by the patched + * libpcap, but if the file has the magic number for an + * unpatched libpcap we only read as many bytes as the regular + * header has. + */ + amt_read = fread(&sf_hdr, 1, p->sf.hdrsize, fp); + if (amt_read != p->sf.hdrsize) { + if (ferror(fp)) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "error reading dump file: %s", + pcap_strerror(errno)); + return (-1); + } else { + if (amt_read != 0) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "truncated dump file; tried to read %lu header bytes, only got %lu", + (unsigned long)p->sf.hdrsize, + (unsigned long)amt_read); + return (-1); + } + /* EOF */ + return (1); + } + } + + if (p->sf.swapped) { + /* these were written in opposite byte order */ + hdr->caplen = SWAPLONG(sf_hdr.caplen); + hdr->len = SWAPLONG(sf_hdr.len); + hdr->ts.tv_sec = SWAPLONG(sf_hdr.ts.tv_sec); + hdr->ts.tv_usec = SWAPLONG(sf_hdr.ts.tv_usec); + } else { + hdr->caplen = sf_hdr.caplen; + hdr->len = sf_hdr.len; + hdr->ts.tv_sec = sf_hdr.ts.tv_sec; + hdr->ts.tv_usec = sf_hdr.ts.tv_usec; + } + /* Swap the caplen and len fields, if necessary. */ + switch (p->sf.lengths_swapped) { + + case NOT_SWAPPED: + break; + + case MAYBE_SWAPPED: + if (hdr->caplen <= hdr->len) { + /* + * The captured length is <= the actual length, + * so presumably they weren't swapped. + */ + break; + } + /* FALLTHROUGH */ + + case SWAPPED: + t = hdr->caplen; + hdr->caplen = hdr->len; + hdr->len = t; + break; + } + + if (hdr->caplen > p->bufsize) { + /* + * This can happen due to Solaris 2.3 systems tripping + * over the BUFMOD problem and not setting the snapshot + * correctly in the savefile header. If the caplen isn't + * grossly wrong, try to salvage. + */ + static u_char *tp = NULL; + static size_t tsize = 0; + + if (hdr->caplen > 65535) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "bogus savefile header"); + return (-1); + } + + if (tsize < hdr->caplen) { + tsize = ((hdr->caplen + 1023) / 1024) * 1024; + if (tp != NULL) + free((u_char *)tp); + tp = (u_char *)malloc(tsize); + if (tp == NULL) { + tsize = 0; + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "BUFMOD hack malloc"); + return (-1); + } + } + amt_read = fread((char *)tp, 1, hdr->caplen, fp); + if (amt_read != hdr->caplen) { + if (ferror(fp)) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "error reading dump file: %s", + pcap_strerror(errno)); + } else { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "truncated dump file; tried to read %u captured bytes, only got %lu", + hdr->caplen, (unsigned long)amt_read); + } + return (-1); + } + /* + * We can only keep up to p->bufsize bytes. Since + * caplen > p->bufsize is exactly how we got here, + * we know we can only keep the first p->bufsize bytes + * and must drop the remainder. Adjust caplen accordingly, + * so we don't get confused later as to how many bytes we + * have to play with. + */ + hdr->caplen = p->bufsize; + memcpy(p->buffer, (char *)tp, p->bufsize); + } else { + /* read the packet itself */ + amt_read = fread(p->buffer, 1, hdr->caplen, fp); + if (amt_read != hdr->caplen) { + if (ferror(fp)) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "error reading dump file: %s", + pcap_strerror(errno)); + } else { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "truncated dump file; tried to read %u captured bytes, only got %lu", + hdr->caplen, (unsigned long)amt_read); + } + return (-1); + } + } + *data = p->buffer; + + if (p->sf.swapped) { + /* + * Convert pseudo-headers from the byte order of + * the host on which the file was saved to our + * byte order, as necessary. + */ + switch (p->linktype) { + + case DLT_USB_LINUX: + swap_linux_usb_header(hdr, *data, 0); + break; + + case DLT_USB_LINUX_MMAPPED: + swap_linux_usb_header(hdr, *data, 1); + break; + } + } + + return (0); +} + +static int +sf_write_header(FILE *fp, int linktype, int thiszone, int snaplen) +{ + struct pcap_file_header hdr; + + hdr.magic = TCPDUMP_MAGIC; + hdr.version_major = PCAP_VERSION_MAJOR; + hdr.version_minor = PCAP_VERSION_MINOR; + + hdr.thiszone = thiszone; + hdr.snaplen = snaplen; + hdr.sigfigs = 0; + hdr.linktype = linktype; + + if (fwrite((char *)&hdr, sizeof(hdr), 1, fp) != 1) + return (-1); + + return (0); +} + +/* + * Output a packet to the initialized dump file. + */ +void +pcap_dump(u_char *user, const struct pcap_pkthdr *h, const u_char *sp) +{ + register FILE *f; + struct pcap_sf_pkthdr sf_hdr; + + f = (FILE *)user; + sf_hdr.ts.tv_sec = h->ts.tv_sec; + sf_hdr.ts.tv_usec = h->ts.tv_usec; + sf_hdr.caplen = h->caplen; + sf_hdr.len = h->len; + /* XXX we should check the return status */ + (void)fwrite(&sf_hdr, sizeof(sf_hdr), 1, f); + (void)fwrite(sp, h->caplen, 1, f); +} + +static pcap_dumper_t * +pcap_setup_dump(pcap_t *p, int linktype, FILE *f, const char *fname) +{ + +#if defined(WIN32) || defined(MSDOS) + /* + * If we're writing to the standard output, put it in binary + * mode, as savefiles are binary files. + * + * Otherwise, we turn off buffering. + * XXX - why? And why not on the standard output? + */ + if (f == stdout) + SET_BINMODE(f); + else + setbuf(f, NULL); +#endif + if (sf_write_header(f, linktype, p->tzoff, p->snapshot) == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "Can't write to %s: %s", + fname, pcap_strerror(errno)); + if (f != stdout) + (void)fclose(f); + return (NULL); + } + return ((pcap_dumper_t *)f); +} + +/* + * Initialize so that sf_write() will output to the file named 'fname'. + */ +pcap_dumper_t * +pcap_dump_open(pcap_t *p, const char *fname) +{ + FILE *f; + int linktype; + + /* + * If this pcap_t hasn't been activated, it doesn't have a + * link-layer type, so we can't use it. + */ + if (!p->activated) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "%s: not-yet-activated pcap_t passed to pcap_dump_open", + fname); + return (NULL); + } + linktype = dlt_to_linktype(p->linktype); + if (linktype == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "%s: link-layer type %d isn't supported in savefiles", + fname, p->linktype); + return (NULL); + } + linktype |= p->linktype_ext; + + if (fname[0] == '-' && fname[1] == '\0') { + f = stdout; + fname = "standard output"; + } else { +#if !defined(WIN32) && !defined(MSDOS) + f = fopen(fname, "w"); +#else + f = fopen(fname, "wb"); +#endif + if (f == NULL) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "%s: %s", + fname, pcap_strerror(errno)); + return (NULL); + } + } + return (pcap_setup_dump(p, linktype, f, fname)); +} + +/* + * Initialize so that sf_write() will output to the given stream. + */ +pcap_dumper_t * +pcap_dump_fopen(pcap_t *p, FILE *f) +{ + int linktype; + + linktype = dlt_to_linktype(p->linktype); + if (linktype == -1) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "stream: link-layer type %d isn't supported in savefiles", + p->linktype); + return (NULL); + } + linktype |= p->linktype_ext; + + return (pcap_setup_dump(p, linktype, f, "stream")); +} + +FILE * +pcap_dump_file(pcap_dumper_t *p) +{ + return ((FILE *)p); +} + +long +pcap_dump_ftell(pcap_dumper_t *p) +{ + return (ftell((FILE *)p)); +} + +int +pcap_dump_flush(pcap_dumper_t *p) +{ + + if (fflush((FILE *)p) == EOF) + return (-1); + else + return (0); +} + +void +pcap_dump_close(pcap_dumper_t *p) +{ + +#ifdef notyet + if (ferror((FILE *)p)) + return-an-error; + /* XXX should check return from fclose() too */ +#endif + (void)fclose((FILE *)p); +} diff --git a/sf-pcap.h b/sf-pcap.h new file mode 100644 index 0000000..3b3fbe8 --- /dev/null +++ b/sf-pcap.h @@ -0,0 +1,36 @@ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * sf-pcap.h - libpcap-file-format-specific routines + * Extraction/creation by Jeffrey Mogul, DECWRL + * Modified by Steve McCanne, LBL. + * + * Used to save the received packet headers, after filtering, to + * a file, and then read them later. + * The first record in the file contains saved values for the machine + * dependent values so we can print the dump file on any architecture. + */ + +#ifndef sf_pcap_h +#define sf_pcap_h + +extern int pcap_check_header(pcap_t *, bpf_u_int32, FILE *, char *); + +#endif diff --git a/sunatmpos.h b/sunatmpos.h new file mode 100644 index 0000000..916017f --- /dev/null +++ b/sunatmpos.h @@ -0,0 +1,45 @@ +/* + * Copyright (c) 1997 Yen Yen Lim and North Dakota State University + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Yen Yen Lim and + North Dakota State University + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * @(#) $Header: /tcpdump/master/libpcap/sunatmpos.h,v 1.1 2002-07-11 09:06:47 guy Exp $ (LBL) + */ + +/* SunATM header for ATM packet */ +#define SUNATM_DIR_POS 0 +#define SUNATM_VPI_POS 1 +#define SUNATM_VCI_POS 2 +#define SUNATM_PKT_BEGIN_POS 4 /* Start of ATM packet */ + +/* Protocol type values in the bottom for bits of the byte at SUNATM_DIR_POS. */ +#define PT_LANE 0x01 /* LANE */ +#define PT_LLC 0x02 /* LLC encapsulation */ +#define PT_ILMI 0x05 /* ILMI */ +#define PT_QSAAL 0x06 /* Q.SAAL */ diff --git a/tests/filtertest.c b/tests/filtertest.c new file mode 100644 index 0000000..a56d1e4 --- /dev/null +++ b/tests/filtertest.c @@ -0,0 +1,266 @@ +/* + * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef lint +static const char copyright[] _U_ = + "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\ +The Regents of the University of California. All rights reserved.\n"; +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/filtertest.c,v 1.2 2005-08-08 17:50:13 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifndef HAVE___ATTRIBUTE__ +#define __attribute__(x) +#endif + +static char *program_name; + +/* Forwards */ +static void usage(void) __attribute__((noreturn)); +static void error(const char *, ...) + __attribute__((noreturn, format (printf, 1, 2))); + +extern int optind; +extern int opterr; +extern char *optarg; + +/* + * On Windows, we need to open the file in binary mode, so that + * we get all the bytes specified by the size we get from "fstat()". + * On UNIX, that's not necessary. O_BINARY is defined on Windows; + * we define it as 0 if it's not defined, so it does nothing. + */ +#ifndef O_BINARY +#define O_BINARY 0 +#endif + +static char * +read_infile(char *fname) +{ + register int i, fd, cc; + register char *cp; + struct stat buf; + + fd = open(fname, O_RDONLY|O_BINARY); + if (fd < 0) + error("can't open %s: %s", fname, pcap_strerror(errno)); + + if (fstat(fd, &buf) < 0) + error("can't stat %s: %s", fname, pcap_strerror(errno)); + + cp = malloc((u_int)buf.st_size + 1); + if (cp == NULL) + error("malloc(%d) for %s: %s", (u_int)buf.st_size + 1, + fname, pcap_strerror(errno)); + cc = read(fd, cp, (u_int)buf.st_size); + if (cc < 0) + error("read %s: %s", fname, pcap_strerror(errno)); + if (cc != buf.st_size) + error("short read %s (%d != %d)", fname, cc, (int)buf.st_size); + + close(fd); + /* replace "# comment" with spaces */ + for (i = 0; i < cc; i++) { + if (cp[i] == '#') + while (i < cc && cp[i] != '\n') + cp[i++] = ' '; + } + cp[cc] = '\0'; + return (cp); +} + +/* VARARGS */ +static void +error(const char *fmt, ...) +{ + va_list ap; + + (void)fprintf(stderr, "%s: ", program_name); + va_start(ap, fmt); + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + if (*fmt) { + fmt += strlen(fmt); + if (fmt[-1] != '\n') + (void)fputc('\n', stderr); + } + exit(1); + /* NOTREACHED */ +} + +/* + * Copy arg vector into a new buffer, concatenating arguments with spaces. + */ +static char * +copy_argv(register char **argv) +{ + register char **p; + register u_int len = 0; + char *buf; + char *src, *dst; + + p = argv; + if (*p == 0) + return 0; + + while (*p) + len += strlen(*p++) + 1; + + buf = (char *)malloc(len); + if (buf == NULL) + error("copy_argv: malloc"); + + p = argv; + dst = buf; + while ((src = *p++) != NULL) { + while ((*dst++ = *src++) != '\0') + ; + dst[-1] = ' '; + } + dst[-1] = '\0'; + + return buf; +} + +int +main(int argc, char **argv) +{ + char *cp; + int op; + int dflag; + char *infile; + int Oflag; + long snaplen; + int dlt; + bpf_u_int32 netmask = PCAP_NETMASK_UNKNOWN; + char *cmdbuf; + pcap_t *pd; + struct bpf_program fcode; + +#ifdef WIN32 + if(wsockinit() != 0) return 1; +#endif /* WIN32 */ + + dflag = 1; + infile = NULL; + Oflag = 1; + snaplen = 68; + + if ((cp = strrchr(argv[0], '/')) != NULL) + program_name = cp + 1; + else + program_name = argv[0]; + + opterr = 0; + while ((op = getopt(argc, argv, "dF:m:Os:")) != -1) { + switch (op) { + + case 'd': + ++dflag; + break; + + case 'F': + infile = optarg; + break; + + case 'O': + Oflag = 0; + break; + + case 'm': { + in_addr_t addr; + + addr = inet_addr(optarg); + if (addr == INADDR_NONE) + error("invalid netmask %s", optarg); + netmask = addr; + break; + } + + case 's': { + char *end; + + snaplen = strtol(optarg, &end, 0); + if (optarg == end || *end != '\0' + || snaplen < 0 || snaplen > 65535) + error("invalid snaplen %s", optarg); + else if (snaplen == 0) + snaplen = 65535; + break; + } + + default: + usage(); + /* NOTREACHED */ + } + } + + if (optind >= argc) { + usage(); + /* NOTREACHED */ + } + + dlt = pcap_datalink_name_to_val(argv[optind]); + if (dlt < 0) + error("invalid data link type %s", argv[optind]); + + if (infile) + cmdbuf = read_infile(infile); + else + cmdbuf = copy_argv(&argv[optind+1]); + + pd = pcap_open_dead(dlt, snaplen); + if (pd == NULL) + error("Can't open fake pcap_t"); + + if (pcap_compile(pd, &fcode, cmdbuf, Oflag, netmask) < 0) + error("%s", pcap_geterr(pd)); + bpf_dump(&fcode, dflag); + pcap_close(pd); + exit(0); +} + +static void +usage(void) +{ + (void)fprintf(stderr, "%s, with %s\n", program_name, + pcap_lib_version()); + (void)fprintf(stderr, + "Usage: %s [-dO] [ -F file ] [ -m netmask] [ -s snaplen ] dlt [ expression ]\n", + program_name); + exit(1); +} diff --git a/tests/findalldevstest.c b/tests/findalldevstest.c new file mode 100644 index 0000000..ec7c950 --- /dev/null +++ b/tests/findalldevstest.c @@ -0,0 +1,131 @@ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include +#include +#include +#include + +#include + +static void ifprint(pcap_if_t *d); +static char *iptos(bpf_u_int32 in); + +int main(int argc, char **argv) +{ + pcap_if_t *alldevs; + pcap_if_t *d; + char *s; + bpf_u_int32 net, mask; + + char errbuf[PCAP_ERRBUF_SIZE+1]; + if (pcap_findalldevs(&alldevs, errbuf) == -1) + { + fprintf(stderr,"Error in pcap_findalldevs: %s\n",errbuf); + exit(1); + } + for(d=alldevs;d;d=d->next) + { + ifprint(d); + } + + if ( (s = pcap_lookupdev(errbuf)) == NULL) + { + fprintf(stderr,"Error in pcap_lookupdev: %s\n",errbuf); + } + else + { + printf("Preferred device name: %s\n",s); + } + + if (pcap_lookupnet(s, &net, &mask, errbuf) < 0) + { + fprintf(stderr,"Error in pcap_lookupnet: %s\n",errbuf); + } + else + { + printf("Preferred device is on network: %s/%s\n",iptos(net), iptos(mask)); + } + + exit(0); +} + +static void ifprint(pcap_if_t *d) +{ + pcap_addr_t *a; +#ifdef INET6 + char ntop_buf[INET6_ADDRSTRLEN]; +#endif + + printf("%s\n",d->name); + if (d->description) + printf("\tDescription: %s\n",d->description); + printf("\tLoopback: %s\n",(d->flags & PCAP_IF_LOOPBACK)?"yes":"no"); + + for(a=d->addresses;a;a=a->next) { + switch(a->addr->sa_family) + { + case AF_INET: + printf("\tAddress Family: AF_INET\n"); + if (a->addr) + printf("\t\tAddress: %s\n", + inet_ntoa(((struct sockaddr_in *)(a->addr))->sin_addr)); + if (a->netmask) + printf("\t\tNetmask: %s\n", + inet_ntoa(((struct sockaddr_in *)(a->netmask))->sin_addr)); + if (a->broadaddr) + printf("\t\tBroadcast Address: %s\n", + inet_ntoa(((struct sockaddr_in *)(a->broadaddr))->sin_addr)); + if (a->dstaddr) + printf("\t\tDestination Address: %s\n", + inet_ntoa(((struct sockaddr_in *)(a->dstaddr))->sin_addr)); + break; +#ifdef INET6 + case AF_INET6: + printf("\tAddress Family: AF_INET6\n"); + if (a->addr) + printf("\t\tAddress: %s\n", + inet_ntop(AF_INET6, + ((struct sockaddr_in6 *)(a->addr))->sin6_addr.s6_addr, + ntop_buf, sizeof ntop_buf)); + if (a->netmask) + printf("\t\tNetmask: %s\n", + inet_ntop(AF_INET6, + ((struct sockaddr_in6 *)(a->netmask))->sin6_addr.s6_addr, + ntop_buf, sizeof ntop_buf)); + if (a->broadaddr) + printf("\t\tBroadcast Address: %s\n", + inet_ntop(AF_INET6, + ((struct sockaddr_in6 *)(a->broadaddr))->sin6_addr.s6_addr, + ntop_buf, sizeof ntop_buf)); + if (a->dstaddr) + printf("\t\tDestination Address: %s\n", + inet_ntop(AF_INET6, + ((struct sockaddr_in6 *)(a->dstaddr))->sin6_addr.s6_addr, + ntop_buf, sizeof ntop_buf)); + break; +#endif + default: + printf("\tAddress Family: Unknown (%d)\n", a->addr->sa_family); + break; + } + } + printf("\n"); +} + +/* From tcptraceroute */ +#define IPTOSBUFFERS 12 +static char *iptos(bpf_u_int32 in) +{ + static char output[IPTOSBUFFERS][3*4+3+1]; + static short which; + u_char *p; + + p = (u_char *)∈ + which = (which + 1 == IPTOSBUFFERS ? 0 : which + 1); + sprintf(output[which], "%d.%d.%d.%d", p[0], p[1], p[2], p[3]); + return output[which]; +} diff --git a/tests/nonblocktest.c b/tests/nonblocktest.c new file mode 100644 index 0000000..70a6bfd --- /dev/null +++ b/tests/nonblocktest.c @@ -0,0 +1,226 @@ +/* + * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef lint +static const char copyright[] = + "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\ +The Regents of the University of California. All rights reserved.\n"; +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +char *program_name; + +/* Forwards */ +static void countme(u_char *, const struct pcap_pkthdr *, const u_char *); +static void usage(void) __attribute__((noreturn)); +static void error(const char *, ...); +static void warning(const char *, ...); +static char *copy_argv(char **); + +static pcap_t *pd; + +extern int optind; +extern int opterr; +extern char *optarg; + +int +main(int argc, char **argv) +{ + register int op; + bpf_u_int32 localnet, netmask; + register char *cp, *cmdbuf, *device; + struct bpf_program fcode; + char ebuf[PCAP_ERRBUF_SIZE]; + int status; + int packet_count; + + device = NULL; + if ((cp = strrchr(argv[0], '/')) != NULL) + program_name = cp + 1; + else + program_name = argv[0]; + + opterr = 0; + while ((op = getopt(argc, argv, "i:")) != -1) { + switch (op) { + + case 'i': + device = optarg; + break; + + default: + usage(); + /* NOTREACHED */ + } + } + + if (device == NULL) { + device = pcap_lookupdev(ebuf); + if (device == NULL) + error("%s", ebuf); + } + *ebuf = '\0'; + pd = pcap_open_live(device, 65535, 0, 1000, ebuf); + if (pd == NULL) + error("%s", ebuf); + else if (*ebuf) + warning("%s", ebuf); + if (pcap_lookupnet(device, &localnet, &netmask, ebuf) < 0) { + localnet = 0; + netmask = 0; + warning("%s", ebuf); + } + cmdbuf = copy_argv(&argv[optind]); + + if (pcap_compile(pd, &fcode, cmdbuf, 1, netmask) < 0) + error("%s", pcap_geterr(pd)); + + if (pcap_setfilter(pd, &fcode) < 0) + error("%s", pcap_geterr(pd)); + if (pcap_setnonblock(pd, 1, ebuf) == -1) + error("pcap_setnonblock failed: %s", ebuf); + printf("Listening on %s\n", device); + for (;;) { + packet_count = 0; + status = pcap_dispatch(pd, -1, countme, + (u_char *)&packet_count); + if (status < 0) + break; + if (status != 0) { + printf("%d packets seen, %d packets counted after pcap_dispatch returns\n", + status, packet_count); + } + } + if (status == -2) { + /* + * We got interrupted, so perhaps we didn't + * manage to finish a line we were printing. + * Print an extra newline, just in case. + */ + putchar('\n'); + } + (void)fflush(stdout); + if (status == -1) { + /* + * Error. Report it. + */ + (void)fprintf(stderr, "%s: pcap_loop: %s\n", + program_name, pcap_geterr(pd)); + } + pcap_close(pd); + exit(status == -1 ? 1 : 0); +} + +static void +countme(u_char *user, const struct pcap_pkthdr *h, const u_char *sp) +{ + int *counterp = (int *)user; + + (*counterp)++; +} + +static void +usage(void) +{ + (void)fprintf(stderr, "Usage: %s [ -sptn ] [ -i interface ] [expression]\n", + program_name); + exit(1); +} + +/* VARARGS */ +static void +error(const char *fmt, ...) +{ + va_list ap; + + (void)fprintf(stderr, "%s: ", program_name); + va_start(ap, fmt); + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + if (*fmt) { + fmt += strlen(fmt); + if (fmt[-1] != '\n') + (void)fputc('\n', stderr); + } + exit(1); + /* NOTREACHED */ +} + +/* VARARGS */ +static void +warning(const char *fmt, ...) +{ + va_list ap; + + (void)fprintf(stderr, "%s: WARNING: ", program_name); + va_start(ap, fmt); + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + if (*fmt) { + fmt += strlen(fmt); + if (fmt[-1] != '\n') + (void)fputc('\n', stderr); + } +} + +/* + * Copy arg vector into a new buffer, concatenating arguments with spaces. + */ +static char * +copy_argv(register char **argv) +{ + register char **p; + register u_int len = 0; + char *buf; + char *src, *dst; + + p = argv; + if (*p == 0) + return 0; + + while (*p) + len += strlen(*p++) + 1; + + buf = (char *)malloc(len); + if (buf == NULL) + error("copy_argv: malloc"); + + p = argv; + dst = buf; + while ((src = *p++) != NULL) { + while ((*dst++ = *src++) != '\0') + ; + dst[-1] = ' '; + } + dst[-1] = '\0'; + + return buf; +} diff --git a/tests/opentest.c b/tests/opentest.c new file mode 100644 index 0000000..0c91531 --- /dev/null +++ b/tests/opentest.c @@ -0,0 +1,216 @@ +/* + * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef lint +static const char copyright[] = + "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\ +The Regents of the University of California. All rights reserved.\n"; +#endif + +#include +#include +#include +#include +#include +#include +#include + +#define MAXIMUM_SNAPLEN 65535 + +static char *program_name; + +/* Forwards */ +static void usage(void) __attribute__((noreturn)); +static void error(const char *, ...); +static void warning(const char *, ...); + +extern int optind; +extern int opterr; +extern char *optarg; + +int +main(int argc, char **argv) +{ + register int op; + register char *cp, *device; + int dorfmon, dopromisc, snaplen, useactivate, bufsize; + char ebuf[PCAP_ERRBUF_SIZE]; + pcap_t *pd; + int status = 0; + + device = NULL; + dorfmon = 0; + dopromisc = 0; + snaplen = MAXIMUM_SNAPLEN; + bufsize = 0; + useactivate = 0; + if ((cp = strrchr(argv[0], '/')) != NULL) + program_name = cp + 1; + else + program_name = argv[0]; + + opterr = 0; + while ((op = getopt(argc, argv, "i:Ips:aB:")) != -1) { + switch (op) { + + case 'i': + device = optarg; + break; + + case 'I': + dorfmon = 1; + useactivate = 1; /* required for rfmon */ + break; + + case 'p': + dopromisc = 1; + break; + + case 's': { + char *end; + + snaplen = strtol(optarg, &end, 0); + if (optarg == end || *end != '\0' + || snaplen < 0 || snaplen > MAXIMUM_SNAPLEN) + error("invalid snaplen %s", optarg); + else if (snaplen == 0) + snaplen = MAXIMUM_SNAPLEN; + break; + } + + case 'B': + bufsize = atoi(optarg)*1024; + if (bufsize <= 0) + error("invalid packet buffer size %s", optarg); + useactivate = 1; /* required for bufsize */ + break; + + case 'a': + useactivate = 1; + break; + + default: + usage(); + /* NOTREACHED */ + } + } + + if (useactivate) { + pd = pcap_create(device, ebuf); + if (pd == NULL) + error("%s", ebuf); + status = pcap_set_snaplen(pd, snaplen); + if (status != 0) + error("%s: pcap_set_snaplen failed: %s", + device, pcap_statustostr(status)); + if (dopromisc) { + status = pcap_set_promisc(pd, 1); + if (status != 0) + error("%s: pcap_set_promisc failed: %s", + device, pcap_statustostr(status)); + } + if (dorfmon) { + status = pcap_set_rfmon(pd, 1); + if (status != 0) + error("%s: pcap_set_rfmon failed: %s", + device, pcap_statustostr(status)); + } + status = pcap_set_timeout(pd, 1000); + if (status != 0) + error("%s: pcap_set_timeout failed: %s", + device, pcap_statustostr(status)); + if (bufsize != 0) { + status = pcap_set_buffer_size(pd, bufsize); + if (status != 0) + error("%s: pcap_set_buffer_size failed: %s", + device, pcap_statustostr(status)); + } + status = pcap_activate(pd); + if (status < 0) { + /* + * pcap_activate() failed. + */ + error("%s: %s\n(%s)", device, + pcap_statustostr(status), pcap_geterr(pd)); + } else if (status > 0) { + /* + * pcap_activate() succeeded, but it's warning us + * of a problem it had. + */ + warning("%s: %s\n(%s)", device, + pcap_statustostr(status), pcap_geterr(pd)); + } + } else { + *ebuf = '\0'; + pd = pcap_open_live(device, 65535, 0, 1000, ebuf); + if (pd == NULL) + error("%s", ebuf); + else if (*ebuf) + warning("%s", ebuf); + } + pcap_close(pd); + exit(status < 0 ? 1 : 0); +} + +static void +usage(void) +{ + (void)fprintf(stderr, + "Usage: %s [ -Ipa ] [ -i interface ] [ -s snaplen ] [ -B bufsize ]\n", + program_name); + exit(1); +} + +/* VARARGS */ +static void +error(const char *fmt, ...) +{ + va_list ap; + + (void)fprintf(stderr, "%s: ", program_name); + va_start(ap, fmt); + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + if (*fmt) { + fmt += strlen(fmt); + if (fmt[-1] != '\n') + (void)fputc('\n', stderr); + } + exit(1); + /* NOTREACHED */ +} + +/* VARARGS */ +static void +warning(const char *fmt, ...) +{ + va_list ap; + + (void)fprintf(stderr, "%s: WARNING: ", program_name); + va_start(ap, fmt); + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + if (*fmt) { + fmt += strlen(fmt); + if (fmt[-1] != '\n') + (void)fputc('\n', stderr); + } +} diff --git a/tests/reactivatetest.c b/tests/reactivatetest.c new file mode 100644 index 0000000..9031a64 --- /dev/null +++ b/tests/reactivatetest.c @@ -0,0 +1,84 @@ +/* + * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef lint +static const char copyright[] = + "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\ +The Regents of the University of California. All rights reserved.\n"; +#endif + +#include +#include +#include +#include +#include + +/* Forwards */ +static void error(const char *, ...); + +int +main(void) +{ + char ebuf[PCAP_ERRBUF_SIZE]; + pcap_t *pd; + int status = 0; + + pd = pcap_open_live("lo0", 65535, 0, 1000, ebuf); + if (pd == NULL) { + pd = pcap_open_live("lo", 65535, 0, 1000, ebuf); + if (pd == NULL) { + error("Neither lo0 nor lo could be opened: %s", + ebuf); + return 2; + } + } + status = pcap_activate(pd); + if (status != PCAP_ERROR_ACTIVATED) { + if (status == 0) + error("pcap_activate() of opened pcap_t succeeded"); + else if (status == PCAP_ERROR) + error("pcap_activate() of opened pcap_t failed with %s, not PCAP_ERROR_ACTIVATED", + pcap_geterr(pd)); + else + error("pcap_activate() of opened pcap_t failed with %s, not PCAP_ERROR_ACTIVATED", + pcap_statustostr(status)); + } + return 0; +} + +/* VARARGS */ +static void +error(const char *fmt, ...) +{ + va_list ap; + + (void)fprintf(stderr, "reactivatetest: "); + va_start(ap, fmt); + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + if (*fmt) { + fmt += strlen(fmt); + if (fmt[-1] != '\n') + (void)fputc('\n', stderr); + } + exit(1); + /* NOTREACHED */ +} diff --git a/tests/selpolltest.c b/tests/selpolltest.c new file mode 100644 index 0000000..d94fb56 --- /dev/null +++ b/tests/selpolltest.c @@ -0,0 +1,350 @@ +/* + * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef lint +static const char copyright[] = + "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\ +The Regents of the University of California. All rights reserved.\n"; +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +char *program_name; + +/* Forwards */ +static void countme(u_char *, const struct pcap_pkthdr *, const u_char *); +static void usage(void) __attribute__((noreturn)); +static void error(const char *, ...); +static void warning(const char *, ...); +static char *copy_argv(char **); + +static pcap_t *pd; + +extern int optind; +extern int opterr; +extern char *optarg; + +int +main(int argc, char **argv) +{ + register int op; + bpf_u_int32 localnet, netmask; + register char *cp, *cmdbuf, *device; + int doselect, dopoll, dotimeout, dononblock; + struct bpf_program fcode; + char ebuf[PCAP_ERRBUF_SIZE]; + int selectable_fd; + int status; + int packet_count; + + device = NULL; + doselect = 0; + dopoll = 0; + dotimeout = 0; + dononblock = 0; + if ((cp = strrchr(argv[0], '/')) != NULL) + program_name = cp + 1; + else + program_name = argv[0]; + + opterr = 0; + while ((op = getopt(argc, argv, "i:sptn")) != -1) { + switch (op) { + + case 'i': + device = optarg; + break; + + case 's': + doselect = 1; + break; + + case 'p': + dopoll = 1; + break; + + case 't': + dotimeout = 1; + break; + + case 'n': + dononblock = 1; + break; + + default: + usage(); + /* NOTREACHED */ + } + } + + if (doselect && dopoll) { + fprintf(stderr, "selpolltest: choose select (-s) or poll (-p), but not both\n"); + return 1; + } + if (dotimeout && !doselect && !dopoll) { + fprintf(stderr, "selpolltest: timeout (-t) requires select (-s) or poll (-p)\n"); + return 1; + } + if (device == NULL) { + device = pcap_lookupdev(ebuf); + if (device == NULL) + error("%s", ebuf); + } + *ebuf = '\0'; + pd = pcap_open_live(device, 65535, 0, 1000, ebuf); + if (pd == NULL) + error("%s", ebuf); + else if (*ebuf) + warning("%s", ebuf); + if (pcap_lookupnet(device, &localnet, &netmask, ebuf) < 0) { + localnet = 0; + netmask = 0; + warning("%s", ebuf); + } + cmdbuf = copy_argv(&argv[optind]); + + if (pcap_compile(pd, &fcode, cmdbuf, 1, netmask) < 0) + error("%s", pcap_geterr(pd)); + + if (pcap_setfilter(pd, &fcode) < 0) + error("%s", pcap_geterr(pd)); + if (pcap_get_selectable_fd(pd) == -1) + error("pcap_get_selectable_fd() fails"); + if (dononblock) { + if (pcap_setnonblock(pd, 1, ebuf) == -1) + error("pcap_setnonblock failed: %s", ebuf); + } + selectable_fd = pcap_get_selectable_fd(pd); + printf("Listening on %s\n", device); + if (doselect) { + for (;;) { + fd_set setread, setexcept; + struct timeval seltimeout; + + FD_ZERO(&setread); + FD_SET(selectable_fd, &setread); + FD_ZERO(&setexcept); + FD_SET(selectable_fd, &setexcept); + if (dotimeout) { + seltimeout.tv_sec = 0; + seltimeout.tv_usec = 1000; + status = select(selectable_fd + 1, &setread, + NULL, &setexcept, &seltimeout); + } else { + status = select(selectable_fd + 1, &setread, + NULL, &setexcept, NULL); + } + if (status == -1) { + printf("Select returns error (%s)\n", + strerror(errno)); + } else { + if (status == 0) + printf("Select timed out: "); + else + printf("Select returned a descriptor: "); + if (FD_ISSET(selectable_fd, &setread)) + printf("readable, "); + else + printf("not readable, "); + if (FD_ISSET(selectable_fd, &setexcept)) + printf("exceptional condition\n"); + else + printf("no exceptional condition\n"); + packet_count = 0; + status = pcap_dispatch(pd, -1, countme, + (u_char *)&packet_count); + if (status < 0) + break; + printf("%d packets seen, %d packets counted after select returns\n", + status, packet_count); + } + } + } else if (dopoll) { + for (;;) { + struct pollfd fd; + int polltimeout; + + fd.fd = selectable_fd; + fd.events = POLLIN; + if (dotimeout) + polltimeout = 1; + else + polltimeout = -1; + status = poll(&fd, 1, polltimeout); + if (status == -1) { + printf("Poll returns error (%s)\n", + strerror(errno)); + } else { + if (status == 0) + printf("Poll timed out\n"); + else { + printf("Poll returned a descriptor: "); + if (fd.revents & POLLIN) + printf("readable, "); + else + printf("not readable, "); + if (fd.revents & POLLERR) + printf("exceptional condition, "); + else + printf("no exceptional condition, "); + if (fd.revents & POLLHUP) + printf("disconnect, "); + else + printf("no disconnect, "); + if (fd.revents & POLLNVAL) + printf("invalid\n"); + else + printf("not invalid\n"); + } + packet_count = 0; + status = pcap_dispatch(pd, -1, countme, + (u_char *)&packet_count); + if (status < 0) + break; + printf("%d packets seen, %d packets counted after poll returns\n", + status, packet_count); + } + } + } else { + for (;;) { + packet_count = 0; + status = pcap_dispatch(pd, -1, countme, + (u_char *)&packet_count); + if (status < 0) + break; + printf("%d packets seen, %d packets counted after pcap_dispatch returns\n", + status, packet_count); + } + } + if (status == -2) { + /* + * We got interrupted, so perhaps we didn't + * manage to finish a line we were printing. + * Print an extra newline, just in case. + */ + putchar('\n'); + } + (void)fflush(stdout); + if (status == -1) { + /* + * Error. Report it. + */ + (void)fprintf(stderr, "%s: pcap_loop: %s\n", + program_name, pcap_geterr(pd)); + } + pcap_close(pd); + exit(status == -1 ? 1 : 0); +} + +static void +countme(u_char *user, const struct pcap_pkthdr *h, const u_char *sp) +{ + int *counterp = (int *)user; + + (*counterp)++; +} + +static void +usage(void) +{ + (void)fprintf(stderr, "Usage: %s [ -sptn ] [ -i interface ] [expression]\n", + program_name); + exit(1); +} + +/* VARARGS */ +static void +error(const char *fmt, ...) +{ + va_list ap; + + (void)fprintf(stderr, "%s: ", program_name); + va_start(ap, fmt); + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + if (*fmt) { + fmt += strlen(fmt); + if (fmt[-1] != '\n') + (void)fputc('\n', stderr); + } + exit(1); + /* NOTREACHED */ +} + +/* VARARGS */ +static void +warning(const char *fmt, ...) +{ + va_list ap; + + (void)fprintf(stderr, "%s: WARNING: ", program_name); + va_start(ap, fmt); + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + if (*fmt) { + fmt += strlen(fmt); + if (fmt[-1] != '\n') + (void)fputc('\n', stderr); + } +} + +/* + * Copy arg vector into a new buffer, concatenating arguments with spaces. + */ +static char * +copy_argv(register char **argv) +{ + register char **p; + register u_int len = 0; + char *buf; + char *src, *dst; + + p = argv; + if (*p == 0) + return 0; + + while (*p) + len += strlen(*p++) + 1; + + buf = (char *)malloc(len); + if (buf == NULL) + error("copy_argv: malloc"); + + p = argv; + dst = buf; + while ((src = *p++) != NULL) { + while ((*dst++ = *src++) != '\0') + ; + dst[-1] = ' '; + } + dst[-1] = '\0'; + + return buf; +} -- cgit v1.2.3