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author | Anas Nashif <anas.nashif@intel.com> | 2012-10-30 20:54:38 (GMT) |
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committer | Anas Nashif <anas.nashif@intel.com> | 2012-10-30 20:54:38 (GMT) |
commit | b8e6c26b7b9608dffc84645f17fe4cf534af18dd (patch) | |
tree | 61d9fff2984aa043471a1c305cfc4c76d7a099fb | |
download | c-ares-b8e6c26b7b9608dffc84645f17fe4cf534af18dd.zip c-ares-b8e6c26b7b9608dffc84645f17fe4cf534af18dd.tar.gz c-ares-b8e6c26b7b9608dffc84645f17fe4cf534af18dd.tar.bz2 |
Imported Upstream version 1.7.5upstream/1.7.5
-rw-r--r-- | AUTHORS | 37 | ||||
-rw-r--r-- | CHANGES | 1218 | ||||
-rw-r--r-- | Makefile.Watcom | 164 | ||||
-rw-r--r-- | Makefile.am | 175 | ||||
-rw-r--r-- | Makefile.dj | 85 | ||||
-rw-r--r-- | Makefile.in | 1458 | ||||
-rw-r--r-- | Makefile.inc | 199 | ||||
-rw-r--r-- | Makefile.m32 | 68 | ||||
-rw-r--r-- | Makefile.msvc | 519 | ||||
-rw-r--r-- | Makefile.netware | 440 | ||||
-rw-r--r-- | NEWS | 21 | ||||
-rw-r--r-- | README | 60 | ||||
-rw-r--r-- | README.cares | 13 | ||||
-rw-r--r-- | README.msvc | 142 | ||||
-rw-r--r-- | RELEASE-NOTES | 26 | ||||
-rw-r--r-- | TODO | 23 | ||||
-rw-r--r-- | acinclude.m4 | 1938 | ||||
-rw-r--r-- | aclocal.m4 | 932 | ||||
-rw-r--r-- | acountry.1 | 53 | ||||
-rw-r--r-- | acountry.c | 628 | ||||
-rw-r--r-- | adig.1 | 71 | ||||
-rw-r--r-- | adig.c | 843 | ||||
-rw-r--r-- | ahost.1 | 48 | ||||
-rw-r--r-- | ahost.c | 202 | ||||
-rw-r--r-- | ares.h | 543 | ||||
-rw-r--r-- | ares__close_sockets.c | 66 | ||||
-rw-r--r-- | ares__get_hostent.c | 263 | ||||
-rw-r--r-- | ares__read_line.c | 71 | ||||
-rw-r--r-- | ares__timeval.c | 111 | ||||
-rw-r--r-- | ares_build.h | 252 | ||||
-rw-r--r-- | ares_build.h.in | 110 | ||||
-rw-r--r-- | ares_cancel.3 | 43 | ||||
-rw-r--r-- | ares_cancel.c | 63 | ||||
-rw-r--r-- | ares_cancel.pdf | bin | 0 -> 3782 bytes | |||
-rw-r--r-- | ares_config.h.in | 515 | ||||
-rw-r--r-- | ares_data.c | 190 | ||||
-rw-r--r-- | ares_data.h | 65 | ||||
-rw-r--r-- | ares_destroy.3 | 43 | ||||
-rw-r--r-- | ares_destroy.c | 105 | ||||
-rw-r--r-- | ares_destroy.pdf | bin | 0 -> 3909 bytes | |||
-rw-r--r-- | ares_destroy_options.3 | 38 | ||||
-rw-r--r-- | ares_destroy_options.pdf | bin | 0 -> 3582 bytes | |||
-rw-r--r-- | ares_dns.h | 90 | ||||
-rw-r--r-- | ares_dup.3 | 43 | ||||
-rw-r--r-- | ares_dup.pdf | bin | 0 -> 3868 bytes | |||
-rw-r--r-- | ares_expand_name.3 | 63 | ||||
-rw-r--r-- | ares_expand_name.c | 200 | ||||
-rw-r--r-- | ares_expand_name.pdf | bin | 0 -> 4337 bytes | |||
-rw-r--r-- | ares_expand_string.3 | 61 | ||||
-rw-r--r-- | ares_expand_string.c | 75 | ||||
-rw-r--r-- | ares_expand_string.pdf | bin | 0 -> 4263 bytes | |||
-rw-r--r-- | ares_fds.3 | 61 | ||||
-rw-r--r-- | ares_fds.c | 63 | ||||
-rw-r--r-- | ares_fds.pdf | bin | 0 -> 4132 bytes | |||
-rw-r--r-- | ares_free_data.3 | 72 | ||||
-rw-r--r-- | ares_free_data.pdf | bin | 0 -> 4317 bytes | |||
-rw-r--r-- | ares_free_hostent.3 | 45 | ||||
-rw-r--r-- | ares_free_hostent.c | 42 | ||||
-rw-r--r-- | ares_free_hostent.pdf | 111 | ||||
-rw-r--r-- | ares_free_string.3 | 35 | ||||
-rw-r--r-- | ares_free_string.c | 25 | ||||
-rw-r--r-- | ares_free_string.pdf | bin | 0 -> 3455 bytes | |||
-rw-r--r-- | ares_get_servers.3 | 78 | ||||
-rw-r--r-- | ares_get_servers.pdf | bin | 0 -> 5064 bytes | |||
-rw-r--r-- | ares_getenv.c | 30 | ||||
-rw-r--r-- | ares_getenv.h | 26 | ||||
-rw-r--r-- | ares_gethostbyaddr.3 | 101 | ||||
-rw-r--r-- | ares_gethostbyaddr.c | 301 | ||||
-rw-r--r-- | ares_gethostbyaddr.pdf | bin | 0 -> 5371 bytes | |||
-rw-r--r-- | ares_gethostbyname.3 | 105 | ||||
-rw-r--r-- | ares_gethostbyname.c | 523 | ||||
-rw-r--r-- | ares_gethostbyname.pdf | bin | 0 -> 5471 bytes | |||
-rw-r--r-- | ares_gethostbyname_file.3 | 83 | ||||
-rw-r--r-- | ares_gethostbyname_file.pdf | bin | 0 -> 5000 bytes | |||
-rw-r--r-- | ares_getnameinfo.3 | 149 | ||||
-rw-r--r-- | ares_getnameinfo.c | 427 | ||||
-rw-r--r-- | ares_getnameinfo.pdf | bin | 0 -> 7096 bytes | |||
-rw-r--r-- | ares_getopt.c | 122 | ||||
-rw-r--r-- | ares_getopt.h | 53 | ||||
-rw-r--r-- | ares_getsock.3 | 57 | ||||
-rw-r--r-- | ares_getsock.c | 72 | ||||
-rw-r--r-- | ares_getsock.pdf | bin | 0 -> 4291 bytes | |||
-rw-r--r-- | ares_init.3 | 223 | ||||
-rw-r--r-- | ares_init.c | 1806 | ||||
-rw-r--r-- | ares_init.pdf | bin | 0 -> 10526 bytes | |||
-rw-r--r-- | ares_init_options.3 | 1 | ||||
-rw-r--r-- | ares_init_options.pdf | bin | 0 -> 10526 bytes | |||
-rw-r--r-- | ares_iphlpapi.h | 221 | ||||
-rw-r--r-- | ares_ipv6.h | 78 | ||||
-rw-r--r-- | ares_library_cleanup.3 | 73 | ||||
-rw-r--r-- | ares_library_cleanup.pdf | bin | 0 -> 4927 bytes | |||
-rw-r--r-- | ares_library_init.3 | 96 | ||||
-rw-r--r-- | ares_library_init.c | 142 | ||||
-rw-r--r-- | ares_library_init.h | 42 | ||||
-rw-r--r-- | ares_library_init.pdf | bin | 0 -> 6451 bytes | |||
-rw-r--r-- | ares_llist.c | 86 | ||||
-rw-r--r-- | ares_llist.h | 42 | ||||
-rw-r--r-- | ares_mkquery.3 | 75 | ||||
-rw-r--r-- | ares_mkquery.c | 195 | ||||
-rw-r--r-- | ares_mkquery.pdf | bin | 0 -> 4897 bytes | |||
-rw-r--r-- | ares_nowarn.c | 181 | ||||
-rw-r--r-- | ares_nowarn.h | 55 | ||||
-rw-r--r-- | ares_options.c | 248 | ||||
-rw-r--r-- | ares_parse_a_reply.3 | 78 | ||||
-rw-r--r-- | ares_parse_a_reply.c | 263 | ||||
-rw-r--r-- | ares_parse_a_reply.pdf | bin | 0 -> 4509 bytes | |||
-rw-r--r-- | ares_parse_aaaa_reply.3 | 78 | ||||
-rw-r--r-- | ares_parse_aaaa_reply.c | 259 | ||||
-rw-r--r-- | ares_parse_aaaa_reply.pdf | bin | 0 -> 4457 bytes | |||
-rw-r--r-- | ares_parse_mx_reply.3 | 79 | ||||
-rw-r--r-- | ares_parse_mx_reply.c | 170 | ||||
-rw-r--r-- | ares_parse_mx_reply.pdf | bin | 0 -> 4357 bytes | |||
-rw-r--r-- | ares_parse_ns_reply.3 | 66 | ||||
-rw-r--r-- | ares_parse_ns_reply.c | 182 | ||||
-rw-r--r-- | ares_parse_ns_reply.pdf | bin | 0 -> 4269 bytes | |||
-rw-r--r-- | ares_parse_ptr_reply.3 | 74 | ||||
-rw-r--r-- | ares_parse_ptr_reply.c | 217 | ||||
-rw-r--r-- | ares_parse_ptr_reply.pdf | bin | 0 -> 4496 bytes | |||
-rw-r--r-- | ares_parse_srv_reply.3 | 81 | ||||
-rw-r--r-- | ares_parse_srv_reply.c | 179 | ||||
-rw-r--r-- | ares_parse_srv_reply.pdf | bin | 0 -> 4460 bytes | |||
-rw-r--r-- | ares_parse_txt_reply.3 | 80 | ||||
-rw-r--r-- | ares_parse_txt_reply.c | 201 | ||||
-rw-r--r-- | ares_parse_txt_reply.pdf | bin | 0 -> 4402 bytes | |||
-rw-r--r-- | ares_platform.c | 11035 | ||||
-rw-r--r-- | ares_platform.h | 43 | ||||
-rw-r--r-- | ares_private.h | 355 | ||||
-rw-r--r-- | ares_process.3 | 80 | ||||
-rw-r--r-- | ares_process.c | 1295 | ||||
-rw-r--r-- | ares_process.pdf | bin | 0 -> 4776 bytes | |||
-rw-r--r-- | ares_query.3 | 146 | ||||
-rw-r--r-- | ares_query.c | 183 | ||||
-rw-r--r-- | ares_query.pdf | bin | 0 -> 6935 bytes | |||
-rw-r--r-- | ares_rules.h | 144 | ||||
-rw-r--r-- | ares_save_options.3 | 74 | ||||
-rw-r--r-- | ares_save_options.pdf | bin | 0 -> 4908 bytes | |||
-rw-r--r-- | ares_search.3 | 148 | ||||
-rw-r--r-- | ares_search.c | 321 | ||||
-rw-r--r-- | ares_search.pdf | bin | 0 -> 7197 bytes | |||
-rw-r--r-- | ares_send.3 | 120 | ||||
-rw-r--r-- | ares_send.c | 134 | ||||
-rw-r--r-- | ares_send.pdf | bin | 0 -> 5711 bytes | |||
-rw-r--r-- | ares_set_servers.3 | 84 | ||||
-rw-r--r-- | ares_set_servers.pdf | bin | 0 -> 5153 bytes | |||
-rw-r--r-- | ares_set_socket_callback.3 | 28 | ||||
-rw-r--r-- | ares_set_socket_callback.pdf | bin | 0 -> 3940 bytes | |||
-rw-r--r-- | ares_setup.h | 197 | ||||
-rw-r--r-- | ares_strcasecmp.c | 66 | ||||
-rw-r--r-- | ares_strcasecmp.h | 30 | ||||
-rw-r--r-- | ares_strdup.c | 42 | ||||
-rw-r--r-- | ares_strdup.h | 26 | ||||
-rw-r--r-- | ares_strerror.3 | 37 | ||||
-rw-r--r-- | ares_strerror.c | 56 | ||||
-rw-r--r-- | ares_strerror.pdf | bin | 0 -> 3546 bytes | |||
-rw-r--r-- | ares_timeout.3 | 61 | ||||
-rw-r--r-- | ares_timeout.c | 80 | ||||
-rw-r--r-- | ares_timeout.pdf | bin | 0 -> 4257 bytes | |||
-rw-r--r-- | ares_version.3 | 40 | ||||
-rw-r--r-- | ares_version.c | 11 | ||||
-rw-r--r-- | ares_version.h | 24 | ||||
-rw-r--r-- | ares_version.pdf | bin | 0 -> 3715 bytes | |||
-rw-r--r-- | ares_writev.c | 79 | ||||
-rw-r--r-- | ares_writev.h | 36 | ||||
-rw-r--r-- | bitncmp.c | 59 | ||||
-rw-r--r-- | bitncmp.h | 26 | ||||
-rwxr-xr-x | buildconf | 117 | ||||
-rw-r--r-- | cares.rc | 65 | ||||
-rwxr-xr-x | compile | 142 | ||||
-rw-r--r-- | config-dos.h | 116 | ||||
-rw-r--r-- | config-win32.h | 369 | ||||
-rwxr-xr-x | config.guess | 1517 | ||||
-rwxr-xr-x | config.sub | 1760 | ||||
-rwxr-xr-x | configure | 28311 | ||||
-rw-r--r-- | configure.ac | 857 | ||||
-rwxr-xr-x | depcomp | 530 | ||||
-rw-r--r-- | get_ver.awk | 35 | ||||
-rw-r--r-- | inet_net_pton.c | 451 | ||||
-rw-r--r-- | inet_net_pton.h | 31 | ||||
-rw-r--r-- | inet_ntop.c | 208 | ||||
-rw-r--r-- | inet_ntop.h | 26 | ||||
-rwxr-xr-x | install-sh | 250 | ||||
-rw-r--r-- | libcares.pc.in | 20 | ||||
-rwxr-xr-x | ltmain.sh | 9642 | ||||
-rw-r--r-- | m4/cares-compilers.m4 | 1573 | ||||
-rw-r--r-- | m4/cares-confopts.m4 | 352 | ||||
-rw-r--r-- | m4/cares-functions.m4 | 3545 | ||||
-rw-r--r-- | m4/cares-override.m4 | 111 | ||||
-rw-r--r-- | m4/cares-reentrant.m4 | 611 | ||||
-rw-r--r-- | m4/cares-system.m4 | 83 | ||||
-rw-r--r-- | m4/libtool.m4 | 7851 | ||||
-rw-r--r-- | m4/ltoptions.m4 | 369 | ||||
-rw-r--r-- | m4/ltsugar.m4 | 123 | ||||
-rw-r--r-- | m4/ltversion.m4 | 23 | ||||
-rw-r--r-- | m4/lt~obsolete.m4 | 98 | ||||
-rw-r--r-- | m4/xc-translit.m4 | 164 | ||||
-rwxr-xr-x | maketgz | 74 | ||||
-rwxr-xr-x | missing | 360 | ||||
-rwxr-xr-x | mkinstalldirs | 39 | ||||
-rw-r--r-- | nameser.h | 203 | ||||
-rw-r--r-- | setup_once.h | 504 | ||||
-rw-r--r-- | vc/acountry/vc6acountry.dsp | 190 | ||||
-rw-r--r-- | vc/adig/vc6adig.dsp | 190 | ||||
-rw-r--r-- | vc/ahost/vc6ahost.dsp | 190 | ||||
-rw-r--r-- | vc/cares/vc6cares.dsp | 441 | ||||
-rw-r--r-- | vc/cares/vc6cares.dsw | 29 | ||||
-rw-r--r-- | vc/vc6aws.dsw | 74 | ||||
-rw-r--r-- | windows_port.c | 22 |
207 files changed, 97251 insertions, 0 deletions
@@ -0,0 +1,37 @@ +c-ares is based on ares, and these are the people that have worked on it since +the fork was made: + +Alexander Lazic +Alexey Simak +Andreas Rieke +Ashish Sharma +Brad House +Brad Spencer +Bram Matthys +Dan Fandrich +Daniel Stenberg +Dirk Manske +Dominick Meglio +Doug Goldstein +Duncan Wilcox +Eino Tuominen +Erik Kline +George Neill +Gisle Vanem +Guilherme Balena Versiani +Gunter Knauf +Henrik Stoerner +James Bursa +Michael Wallner +Nick Mathewson +Phil Blundell +Ravi Pratap +Robin Cornelius +Sebastian at basti79.de +Shmulik Regev +Steinar H. Gunderson +Tofu Linden +Vlad Dinulescu +William Ahern +Yang Tse +liren at vivisimo.com @@ -0,0 +1,1218 @@ + Changelog for the c-ares project + +Version 1.7.5 (August 16, 2011) + +Fixed: + + o detection of semicolon comments in resolv.conf + o avoid using system's inet_net_pton affected by the WLB-2008080064 advisory + o replacement ares_inet_net_pton affected by the WLB-2008080064 advisory + o replacement ares_inet_ntop affected by potential out of bounds write + o added install target to Makefile.msvc + o only fall back to AF_INET searches when looking for AF_UNSPEC addresses + o fixed ares_parse_*_reply memory leaks + o Use correct sizeof in ares_getnameinfo() + o IPv6-on-windows: find DNS servers correctly + o man pages: docs for the c-ares utility programs + o getservbyport replacement for Win CE + o config_sortlist: (win32) missing else + o advance_tcp_send_queue: avoid NULL ptr dereference + o configure: fix a bashism + o ares_expand_name: Fix encoded length for indirect root + +Version 1.7.4 (December 9, 2010) + +Changed: + + o local-bind: Support binding to local interface/IPs, see + ares_set_local_ip4, ares_set_local_ip6, ares_set_local_dev + +Fixed: + + o memory leak in ares_getnameinfo + o add missing break that caused get_ares_servers to fail + o ares_parse_a_reply: fix CNAME response parsing + o init_by_options: don't copy an empty sortlist + o Replaced uint32_t with unsigned int to fix broken builds + on a couple of platforms + o Fix lookup with HOSTALIASES set + o adig: fix NAPTR parsing + o compiler warning cleanups + +Version 1.7.3 (June 11, 2010) + +Fixed: + + o builds on Android + o now includes all files necessary to build it (1.7.2 lacked a file) + +Version 1.7.2 (June 10, 2010) + +Changed: + + o Added ares_parse_mx_reply() + +Fixed: + + o ares_init: Last, not first instance of domain or search should win + o improve alternative definition of bool + o fix VS2010 compiler warnings + + +Version 1.7.1 (Mar 23, 2010) + +* May 31, 2010 (Jakub Hrozek) +- Use the last instance of domain/search, not the first one + +* March 23, 2010 (Daniel Stenberg) +- We switched from CVS to git. See http://github.com/bagder/c-ares + +* March 5, 2010 (Daniel Stenberg) +- Daniel Johnson provided fixes for building with the clang compiler. + +* March 5, 2010 (Yang Tse) +- Added IPv6 name servers support. Implementation has been based on code, + comments and feedback provided November and December of 2008 by Daniel + Stenberg, Gregor Jasny, Phil Blundell and myself, December 2009 by Cedric + Bail, and February 2010 by Jakub Hrozek on the c-ares mailing list. On + March I reviewed all that, selected the best of each, and adjusted or + extended parts of it to make the best fit. + + The external and visible result of all this is that two new functions are + added to the external API, ares_get_servers() and ares_set_servers(), which + becomes now the preferred way of getting and setting name servers for any + ares channel as these support both IPv4 and IPv6 name servers. + + In order to not break ABI compatibility, ares_init_options() with option + mask ARES_OPT_SERVERS and ares_save_options() may still be used in code + which is intended to run on IPv4-only stacks. But remember that these + functions do not support IPv6 name servers. This implies that if the user + is capable of defining or providing an IPv6 name server, and the app is + using ares_init_options() or ares_save_options() at some point to handle + the name servers, the app will likely lose IPv6 name servers. + +* January 28, 2010 (Daniel Stenberg) +- Tommie Gannert pointed out a silly bug in ares_process_fd() since it didn't + check for broken connections like ares_process() did. Based on that, I + merged the two functions into a single generic one with two front-ends. + +* December 29, 2009 (Yang Tse) +- Laszlo Tamas Szabo adjusted Makefile.msvc compiler options so that where + run-time error checks enabling compiler option /GZ was used it is replaced + with equivalent /RTCsu for Visual Studio 2003 and newer versions. Option + /GX is replaced with equivalent /EHsc for all versions. Also fixed socket + data type for internal configure_socket function. + +* December 21, 2009 (Yang Tse) +- Ingmar Runge noticed that Windows config-win32.h configuration file + did not include a definition for HAVE_CLOSESOCKET which resulted in + function close() being inappropriately used to close sockets. + +Version 1.7.0 (Nov 30, 2009) + +* November 26, 2009 (Yang Tse) +- Larry Lansing fixed ares_parse_srv_reply to properly parse replies + which might contain non-SRV answers, skipping over potential non-SRV + ones such as CNAMEs. + +* November 23, 2009 (Yang Tse) +- Changed naming convention for c-ares libraries built with MSVC, details + and build instructions provided in README.msvc file. + +* November 22, 2009 (Yang Tse) +- Jakub Hrozek fixed more function prototypes in man pages to sync them + with the ones declared in ares.h + +- Jakub Hrozek renamed addrttl and addr6ttl structs to ares_addrttl and + ares_addr6ttl in order to prevent name space pollution, along with + necessary changes to code base and man pages.This change does not break + ABI, there is no need to recompile existing applications. But existing + applications using these structs with the old name will need source code + adjustments when recompiled using c-ares 1.7.0. + +* November 21, 2009 (Yang Tse) +- Added manifest stuff to Makefile.msvc. + +* November 20, 2009 (Yang Tse) +- Fixed several function prototypes in man pages that were out of sync + with the ones declared in ares.h. Added ares_free_data() along with + man page. Updated ares_parse_srv_reply() and ares_parse_txt_reply() + with changes from Jakub Hrozek making these now return linked lists + instead of arrays, and merging the ares_free_data() adjustments. + +* November 10, 2009 (Yang Tse) +- Updated MSVC 6.0 project files to match settings from Makefile.msvc. + +* November 9, 2009 (Yang Tse) +- Makefile.msvc is now the reference method to build c-ares and sample + programs with any MSVC compiler or MS Visual Studio version. If no + option or target are specified it builds dynamic and static c-ares + libraries in debug and release flavours and also builds all sample + programs using each of the different c-ares libraries. + +* November 2, 2009 (Yang Tse) +- Renamed c-ares setup.h to ares_setup.h + +* October 31, 2009 (Yang Tse) +- Symbol hiding configure options are named now --enable-symbol-hiding + and --disable-symbol-hiding in an attempt to make them less ambiguous. + +* October 30, 2009 (Yang Tse) +- Many fixes for ares_parse_txt_reply() + +* October 29, 2009 (Daniel Stenberg) +- Jakub Hrozek added ares_parse_txt_reply() for TXT parsing + +* October 29, 2009 (Yang Tse) +- Updated MSVC 6.0 workspace and project files that allows building + dynamic and static c-ares libraries in debug and release flavours. + Additionally each of the three sample programs is built against + each of the four possible c-ares libraries, generating all this + a total number of 12 executables and 4 libraries. + +* October 28, 2009 (Yang Tse) +- Initial step towards the ability to reduce c-ares exported symbols + when built as a shared library based on the 'visibility' attribute + for GNUC and Intel compilers and based on __global for Sun compilers, + taking also in account __declspec function decoration for Win32 and + Symbian DLL's. + +* October 27, 2009 (Yang Tse) +- Fixed Pelles C Win32 target compilation issues. + +* October 23, 2009 (Yang Tse) +- John Engelhart noticed an unreleased problem relative to a duplicate + ARES_ECANCELLED error code value and missing error code description. + +* October 7, 2009 (Yang Tse) +- Overhauled ares__get_hostent() Fixing out of bounds memory overwrite + triggered with malformed /etc/hosts file. Improving parsing of /etc/hosts + file. Validating requested address family. Ensuring that failures always + return a NULL pointer. Adjusting header inclusions. + +* October 6, 2009 (Yang Tse) +- Fix ssize_t redefinition errors on WIN64 reported by Alexey Simak. + +* September 29, 2009 (Yang Tse) +- Make configure script also check if _REENTRANT definition is required to + make errno available as a preprocessor macro. + +* September 7, 2009 (Yang Tse) +- Add T_SRV portability check to ares_parse_srv_reply.c + +* 4 Sep 2009 (Daniel Stenberg) +- Jakub Hrozek added ares_parse_srv_reply() for SRV parsing + +* 3 Aug 2009 (Daniel Stenberg) +- Joshua Kwan fixed the init routine to fill in the defaults for stuff that + fails to get inited by other means. This fixes a case of when the c-ares + init fails when internet access is fone. + +- Timo Teras changed the reason code used in the resolve callback done when + ares_cancel() is used, to be ARES_ECANCELLED instead of ARES_ETIMEOUT to + better allow the callback to know what's happening. + +* 14 Jul 2009 (Guenter Knauf) +- renamed generated config.h to ares_config.h to avoid any future clashes + with config.h from other projects. + +* June 20 2009 (Yang Tse) +- Refactor how libraries are checked for connect() function in configure + script and check for connect() as it is done for other functions. + +* June 19 2009 (Yang Tse) +- Make sclose() function-like macro definition used to close a socket, + now solely based on HAVE_CLOSESOCKET and HAVE_CLOSESOCKET_CAMEL + config file preprocessor definitions + +* June 18 2009 (Yang Tse) +- Add CloseSocket camel case function check for configure script. + +* June 17 2009 (Yang Tse) +- Check for socket() and closesocket() as it is done for other functions + in configure script. + +* June 11 2009 (Yang Tse) +- Modified buildconf so that when automake runs it copies missing files + instead of symlinking them. + +* June 8 2009 (Yang Tse) +- Removed buildconf.bat from release and daily snapshot archives. This + file is only for CVS tree checkout builds. + +* May 26 2009 (Yang Tse) +- Added --enable-curldebug configure option to enable and disable building + with the low-level curl debug memory tracking 'feature' to allow decoupled + setting from --enable-debug, allowing again to build c-ares independently + out of the CVS tree. + + For the c-ares library option --enable-debug enables debug build features + which are _not_ related with memory tracking. For the c-ares library when + --enable-debug is given it does not enable the memory tracking feature. If + you wish to enable the curl debug memory tracking you must use configure + option --enable-curldebug explicitily to do so. + + Internally, definition of preprocessor symbol DEBUGBUILD restricts code + which is only compiled for debug enabled builds. And symbol CURLDEBUG is + used to differentiate code which is _only_ used for memory tracking. + + Make ares_init(), ares_dup() and ares_init_options() fail returning + ARES_ENOTINITIALIZED if library initialization has not been performed + calling ares_library_init(). + +* May 20 2009 (Yang Tse) +- Added ares_library_init() and ares_library_cleanup() man pages. + +* May 19 2009 (Yang Tse) +- Introduced ares_library_init() and ares_library_cleanup() functions. + + This is an API and ABI break for Win32/64 systems. Non-Win32/64 build targets + using c-ares 1.7.0 can still survive without calling these functions. Read all + the details on ares_library_init(3) and ares_library_cleanup(3) man pages that + are included. + + curl/libcurl 7.19.5 is fully compatible with c-ares 1.7.0 on all systems. + + In order to use c-ares 1.7.0 with curl/libcurl on Win32/64 systems it is + required that curl/libcurl is 7.19.5 or newer. In other words, it is not + possible on Win32/64 to use c-ares 1.7.0 with a curl/libcurl version less + than 7.19.5 + +* May 11 2009 (Daniel Stenberg) +- Gregor Jasny made c-ares link with libtool 's -export-symbols-regex option to + only expose functions starting with ares_. + +* May 7 2009 (Yang Tse) +- Fix an m4 overquoting triggering a spurious 'AS_TR_CPP' symbol definition + attempt in generated config.h + +* May 2 2009 (Yang Tse) +- Use a build-time configured ares_socklen_t data type instead of socklen_t. + +* April 21 2009 (Yang Tse) +- Moved potential inclusion of system's malloc.h and memory.h header files to + setup_once.h. Inclusion of each header file is based on the definition of + NEED_MALLOC_H and NEED_MEMORY_H respectively. + +* March 11 2009 (Yang Tse) +- Japheth Cleaver fixed acountry.c replacing u_long with unsigned long. + +* February 20 2009 (Yang Tse) +- Do not halt compilation when using VS2008 to build a Windows 2000 target. + +* February 3 2009 (Phil Blundell) +- If the server returns garbage or nothing at all in response to an AAAA query, + go on and ask for A records anyway. + +* January 31 2009 (Daniel Stenberg) +- ares_gethostbyname() now accepts 'AF_UNSPEC' as a family for resolving + either AF_INET6 or AF_INET. It works by accepting any of the looksups in the + hosts file, and it resolves the AAAA field with a fallback to A. + +* January 14 2009 (Daniel Stenberg) +- ares.h no longer uses the HAVE_STRUCT_IN6_ADDR define check, but instead it + now declares the private struct ares_in6_addr for all systems instead of + relying on one possibly not present in the system. + +* January 13 2009 (Phil Blundell) +- ares__send_query() now varies the retry timeout pseudo-randomly to avoid + packet storms when several queries were started at the same time. + +* January 11 2009 (Daniel Stenberg) +- Phil Blundell added the internal function ares__expand_name_for_response() + that is now used by the ares_parse_*_reply() functions instead of the + ares_expand_name() simply to easier return ARES_EBADRESP for the cases where + the name expansion fails as in responses that really isn't expected. + +Version 1.6.0 (Dec 9, 2008) + +* December 9 2008 (Gisle Vanem) + + Fixes for Win32 targets using the Watt-32 tcp/ip stack. + +* Dec 4 2008 (Daniel Stenberg) + + Gregor Jasny provided the patch that introduces ares_set_socket_callback(), + and I edited it to also get duped by ares_dup(). + +* Dec 3 2008 (Daniel Stenberg) + + API changes: + + I made sure the public ares_config struct looks like before and yet it + supports the ROTATE option thanks to c-ares now storing the "optmask" + internally. Thus we should be ABI compatible with the past release(s) + now. My efforts mentioned below should not break backwards ABI compliance. + + Here's how I suggest we proceed with the API: + + ares_init() will be primary "channel creator" function. + + ares_init_options() will continue to work exactly like now and before. For + starters, it will be the (only) way to set the existing options. + + ares_save_options() will continue to work like today, but will ONLY save + options that you can set today (including ARES_OPT_ROTATE actually) but new + options that we add may not be saved with this. + + Instead we introduce: + + ares_dup() that instead can make a new channel and clone the config used + from an existing channel. It will then clone all config options, including + future new things we add. + + ares_set_*() style functions that set (new) config options. As a start we + simply add these for new functionality, but over time we can also introduce + them for existing "struct ares_options" so that we can eventually deprecate + the two ares_*_options() functions. + + ares_get_*() style functions for extracting info from a channel handle that + should be used instead of ares_save_options(). + +* Nov 26 2008 (Yang Tse) +- Brad Spencer provided changes to allow buildconf to work on OS X. + +- Gerald Combs fixed a bug in ares_parse_ptr_reply() which would cause a + buffer to shrink instead of expand if a reply contained 8 or more records. + +* Nov 25 2008 (Yang Tse) +- In preparation for the upcomming IPv6 nameservers patch, the internal + ares_addr union is now changed into an internal struct which also holds + the address family. + +* Nov 19 2008 (Daniel Stenberg) +- Brad Spencer brought the new function ares_gethostbyname_file() which simply + resolves a host name from the given file, using the regular hosts syntax. + +* Nov 1 2008 (Daniel Stenberg) +- Carlo Contavalli added support for the glibc "rotate" option, as documented + in man resolv.conf: + + causes round robin selection of nameservers from among those listed. This + has the effect of spreading the query load among all listed servers, rather + than having all clients try the first listed server first every time. + + You can enable it with ARES_OPT_ROTATE + +* Oct 21 2008 (Yang Tse) + Charles Hardin added handling of EINPROGRESS for UDP connects. + +* Oct 18 2008 (Daniel Stenberg) + Charles Hardin made adig support a regular numerical dotted IP address for the + -s option as well. + +* Oct 7 2008 (Yang Tse) +- Added --enable-optimize configure option to enable and disable compiler + optimizations to allow decoupled setting from --enable-debug. + +* Oct 2 2008 (Yang Tse) +- Added --enable-warnings configure option to enable and disable strict + compiler warnings to allow decoupled setting from --enable-debug. + +* Sep 17 2008 (Yang Tse) +- Code reorganization to allow internal/private use of "nameser.h" to any + system that lacks arpa/nameser.h or arpa/nameser_compat.h header files. + +* Sep 16 2008 (Yang Tse) +- Code reorganization to allow internal/private use of ares_writev to any + system that lacks the writev function. + +* Sep 15 2008 (Yang Tse) +- Code reorganization to allow internal/private use of ares_strcasecmp to any + system that lacks the strcasecmp function. + +- Improve configure detection of some string functions. + +* Sep 11 2008 (Yang Tse) +- Code reorganization to allow internal/private use of ares_strdup to any + system that lacks the strdup function. + +Version 1.5.3 (Aug 29, 2008) + +* Aug 25 2008 (Yang Tse) +- Improvement by Brad House: + + This patch addresses an issue in which a response could be sent back to the + source port of a client from a different address than the request was made to. + This is one form of a DNS cache poisoning attack. + + The patch simply uses recvfrom() rather than recv() and validates that the + address returned from recvfrom() matches the address of the server we have + connected to. Only necessary on UDP sockets as they are connection-less, TCP + is unaffected. + +- Fix by George Neill: + Fixed compilation of acountry sample application failure on some systems. + +* Aug 4 2008 (Daniel Stenberg) +- Fix by Tofu Linden: + + The symptom: + * Users (usually, but not always) on 2-Wire routers and the Comcast service + and a wired connection to their router would find that the second and + subsequent DNS lookups from fresh processes using c-ares to resolve the same + address would cause the process to never see a reply (it keeps polling for + around 1m15s before giving up). + + The repro: + * On such a machine (and yeah, it took us a lot of QA to find the systems + that reproduce such a specific problem!), do 'ahost www.secondlife.com', + then do it again. The first process's lookup will work, subsequent lookups + will time-out and fail. + + The cause: + * init_id_key() was calling randomize_key() *before* it initialized + key->state, meaning that the randomness generated by randomize_key() is + immediately overwritten with deterministic values. (/dev/urandom was also + being read incorrectly in the c-ares version we were using, but this was + fixed in a later version.) + * This makes the stream of generated query-IDs from any new c-ares process + be an identical and predictable sequence of IDs. + * This makes the 2-Wire's default built-in DNS server detect these queries + as probable-duplicates and (erroneously) not respond at all. + + +* Aug 4 2008 (Yang Tse) +- Autoconf 2.62 has changed the behaviour of the AC_AIX macro which we use. + Prior versions of autoconf defined _ALL_SOURCE if _AIX was defined. 2.62 + version of AC_AIX defines _ALL_SOURCE and other four preprocessor symbols + no matter if the system is AIX or not. To keep the traditional behaviour, + and an uniform one across autoconf versions AC_AIX is replaced with our + own internal macro CARES_CHECK_AIX_ALL_SOURCE. + +* Aug 1 2008 (Yang Tse) +- Configure process now checks if the preprocessor _REENTRANT symbol is already + defined. If it isn't currently defined a set of checks are performed to test + if its definition is required to make visible to the compiler a set of *_r + functions. Finally, if _REENTRANT is already defined or needed it takes care + of making adjustments necessary to ensure that it is defined equally for the + configure process tests and generated config file. + +* Jul 20 2008 (Yang Tse) +- When recvfrom prototype uses a void pointer for arguments 2, 5 or 6 this will + now cause the definition, as appropriate, of RECVFROM_TYPE_ARG2_IS_VOID, + RECVFROM_TYPE_ARG5_IS_VOID or RECVFROM_TYPE_ARG6_IS_VOID. + +* Jul 17 2008 (Yang Tse) +- RECVFROM_TYPE_ARG2, RECVFROM_TYPE_ARG5 and RECVFROM_TYPE_ARG6 are now defined + to the data type pointed by its respective argument and not the pointer type. + +* Jul 16 2008 (Yang Tse) +- Improved configure detection of number of arguments for getservbyport_r. + Detection is now based on compilation checks instead of linker ones. + +- Configure process now checks availability of recvfrom() socket function and + finds out its return type and the types of its arguments. Added definitions + for non-configure systems config files, and introduced macro sreadfrom which + will be used on udp sockets as a recvfrom() wrapper in the future. + +* Jul 15 2008 (Yang Tse) +- Introduce definition of _REENTRANT symbol in setup.h to improve library + usability. Previously the configure process only used the AC_SYS_LARGEFILE + macro for debug builds, now it is also used for non-debug ones enabling the + use of configure options --enable-largefile and --disable-largefile which + might be needed for library compatibility. Remove checking the size of + curl_off_t, it is no longer needed. + +* Jul 3 2008 (Daniel Stenberg) +- Phil Blundell: If you ask ares_gethostbyname() to do an AF_INET6 lookup and + the target host has only A records, it automatically falls back to an + AF_INET lookup and gives you the A results. However, if the target host has + a CNAME record, this behaviour is defeated since the original query does + return some data even though ares_parse_aaa_reply() doesn't consider it + relevant. Here's a small patch to make it behave the same with and without + the CNAME. + +* Jul 2 2008 (Yang Tse) +- Fallback to gettimeofday when monotonic clock is unavailable at run-time. + +* Jun 30 2008 (Daniel Stenberg) + +- As was pointed out to me by Andreas Schuldei, the MAXHOSTNAMELEN define is + not posix or anything and thus c-ares failed to build on hurd (and possibly + elsewhere). The define was also somewhat artificially used in the windows + port. Now, I instead rewrote the use of gethostbyname to enlarge the host + name buffer in case of need and totally avoid the use of the MAXHOSTNAMELEN + define. I thus also removed the defien from the namser.h file where it was + once added for the windows build. + + I also fixed init_by_defaults() function to not leak memory in case if + error. + +* Jun 9 2008 (Yang Tse) + +- Make libcares.pc generated file for pkg-config include information relative + to the libraries needed for the static linking of c-ares. + +* May 30 2008 (Yang Tse) + +- Brad House fixed a missing header file inclusion in adig sample program. + +Version 1.5.2 (May 29, 2008) + +* May 13 2008 (Daniel Stenberg) + +- Introducing millisecond resolution support for the timeout option. See + ares_init_options()'s ARES_OPT_TIMEOUTMS. + +* May 9 2008 (Yang Tse) + +- Use monotonic time source if available, for private function ares__tvnow() + +* May 7 2008 (Daniel Stenberg) + +- Sebastian made c-ares able to return all PTR-records when doing reverse + lookups. It is not common practice to have multiple PTR-Records for a single + IP, but its perfectly legal and some sites have those. + +- Doug Goldstein provided a configure patch: updates autoconf 2.13 usage to + autoconf 2.57 usage (which is the version you have specified as the minimum + version). It's a minor change but it does clean up some warnings with newer + autoconf (specifically 2.62). + +* May 5 2008 (Yang Tse) + +- Improved parsing of resolver configuration files. + +* April 4 2008 (Daniel Stenberg) + +- Eino Tuominen improved the code when a file is used to seed the randomizer. + +- Alexey Simak made adig support NAPTR records + +- Alexey Simak fixed the VC dsp file by adding the missing source file + ares_expand_string.c + +* December 11 2007 (Gisle Vanem) + +- Added another sample application; acountry.c which converts an + IPv4-address(es) and/or host-name(s) to country-name and country-code. + This uses the service of the DNSBL at countries.nerd.dk. + +* December 3 2007 (Daniel Stenberg) + +- Brad Spencer fixed the configure script to assume that there's no + /dev/urandom when built cross-compiled as then the script cannot check for + it. + +- Erik Kline cleaned up ares_gethostbyaddr.c:next_lookup() somewhat + +Version 1.5.1 (Nov 21, 2007) + +* November 21 2007 (Daniel Stenberg) + +- Robin Cornelius pointed out that ares_llist.h was missing in the release + archive for 1.5.0 + +Version 1.5.0 (Nov 21, 2007) + +* October 2 2007 (Daniel Stenberg) + +- ares_strerror() segfaulted if the input error number was out of the currently + supported range. + +- Yang Tse: Avoid a segfault when generating a DNS "Transaction ID" in + internal function init_id_key() under low memory conditions. + +* September 28 2007 (Daniel Stenberg) + +- Bumped version to 1.5.0 for next release and soname bumped to 2 due to ABI + and API changes in the progress callback (and possibly more coming up from + Steinar) + +* September 28 2007 (Steinar H. Gunderson) + +- Don't skip a server if it's the only one. (Bugfix from the Google tree.) + +- Made the query callbacks receive the number of timeouts that happened during + the execution of a query, and updated documentation accordingly. (Patch from + the Google tree.) + +- Support a few more socket options: ARES_OPT_SOCK_SNDBUF and + ARES_OPT_SOCK_RCVBUF + +- Always register for TCP events even if there are no outstanding queries, as + the other side could always close the connection, which is a valid event + which should be responded to. + +* September 22 2007 (Daniel Stenberg) + +- Steinar H. Gunderson fixed: Correctly clear sockets from the fd_set on in + several functions (write_tcp_data, read_tcp_data, read_udp_packets) so that + if it fails and the socket is closed the following code doesn't try to use + the file descriptor. + +- Steinar H. Gunderson modified c-ares to now also do to DNS retries even when + TCP is used since there are several edge cases where it still makes sense. + +- Brad House provided a fix for ares_save_options(): + + Apparently I overlooked something with the ares_save_options() where it + would try to do a malloc(0) when no options of that type needed to be saved. + On most platforms, this was fine because malloc(0) doesn't actually return + NULL, but on AIX it does, so ares_save_options would return ARES_ENOMEM. + +* July 14 2007 (Daniel Stenberg) + +- Vlad Dinulescu fixed two outstanding valgrind reports: + + 1. In ares_query.c , in find_query_by_id we compare q->qid (which is a short + int variable) with qid, which is declared as an int variable. Moreover, + DNS_HEADER_SET_QID is used to set the value of qid, but DNS_HEADER_SET_QID + sets only the first two bytes of qid. I think that qid should be declared as + "unsigned short" in this function. + + 2. The same problem occurs in ares_process.c, process_answer() . query->qid + (an unsigned short integer variable) is compared with id, which is an + integer variable. Moreover, id is initialized from DNS_HEADER_QID which sets + only the first two bytes of id. I think that the id variable should be + declared as "unsigned short" in this function. + + Even after declaring these variables as "unsigned short", the valgrind + errors are still there. Which brings us to the third problem. + + 3. The third problem is that Valgrind assumes that query->qid is not + initialised correctly. And it does that because query->qid is set from + DNS_HEADER_QID(qbuf); Valgrind says that qbuf has unitialised bytes. And + qbuf has uninitialised bytes because of channel->next_id . And next_id is + set by ares_init.c:ares__generate_new_id() . I found that putting short r=0 + in this function (instead of short r) makes all Valgrind warnings go away. + I have studied ares__rc4() too, and this is the offending line: + + buffer_ptr[counter] ^= state[xorIndex]; (ares_query.c:62) + + This is what triggers Valgrind.. buffer_ptr is unitialised in this function, + and by applying ^= on it, it remains unitialised. + +Version 1.4.0 (June 8, 2007) + +* June 4 2007 (Daniel Stenberg) + +- James Bursa reported a major memory problem when resolving multi-IP names + and I found and fixed the problem. It was added by Ashish Sharma's patch + two days ago. + + When I then tried to verify multiple entries in /etc/hosts after my fix, I + got another segfault and decided this code was not ripe for inclusion and I + reverted the patch. + +* June 2 2007 + +- Brad Spencer found and fixed three flaws in the code, found with the new + gcc 4.2.0 warning: -Waddress + +- Brad House fixed VS2005 compiler warnings due to time_t being 64bit. + He also made recent Microsoft compilers use _strdup() instead of strdup(). + +- Brad House's man pages for ares_save_options() and ares_destroy_options() + were added. + +- Ashish Sharma provided a patch for supporting multiple entries in the + /etc/hosts file. Patch edited for coding style and functionality by me + (Daniel). + +* May 30 2007 + +- Shmulik Regev brought cryptographically secure transaction IDs: + + The c-ares library implementation uses a DNS "Transaction ID" field that is + seeded with a pseudo random number (based on gettimeofday) which is + incremented (++) between consecutive calls and is therefore rather + predictable. In general, predictability of DNS Transaction ID is a well + known security problem (e.g. + http://bak.spc.org/dms/archive/dns_id_attack.txt) and makes a c-ares based + implementation vulnerable to DNS poisoning. Credit goes to Amit Klein + (Trusteer) for identifying this problem. + + The patch I wrote changes the implementation to use a more secure way of + generating unique IDs. It starts by obtaining a key with reasonable entropy + which is used with an RC4 stream to generate the cryptographically secure + transaction IDs. + + Note that the key generation code (in ares_init:randomize_key) has two + versions, the Windows specific one uses a cryptographically safe function + provided (but undocumented :) by the operating system (described at + http://blogs.msdn.com/michael_howard/archive/2005/01/14/353379.aspx). The + default implementation is a bit naive and uses the standard 'rand' + function. Surely a better way to generate random keys exists for other + platforms. + + The patch can be tested by using the adig utility and using the '-s' option. + +- Brad House added ares_save_options() and ares_destroy_options() that can be + used to keep options for later re-usal when ares_init_options() is used. + + Problem: Calling ares_init() for each lookup can be unnecessarily resource + intensive. On windows, it must LoadLibrary() or search the registry + on each call to ares_init(). On unix, it must read and parse + multiple files to obtain the necessary configuration information. In + a single-threaded environment, it would make sense to only + ares_init() once, but in a heavily multi-threaded environment, it is + undesirable to ares_init() and ares_destroy() for each thread created + and track that. + + Solution: Create ares_save_options() and ares_destroy_options() functions to + retrieve and free options obtained from an initialized channel. The + options populated can be used to pass back into ares_init_options(), + it should populate all needed fields and not retrieve any information + from the system. Probably wise to destroy the cache every minute or + so to prevent the data from becoming stale. + +- Daniel S added ares_process_fd() to allow applications to ask for processing + on specific sockets and thus avoiding select() and associated + functions/macros. This function will be used by upcoming libcurl releases + for this very reason. It also made me export the ares_socket_t type in the + public ares.h header file, since ares_process_fd() uses that type for two of + the arguments. + +* May 25 2007 + +- Ravi Pratap fixed a flaw in the init_by_resolv_conf() function for windows + that could cause it to return a bad return code. + +* April 16 2007 + +- Yang Tse: Provide ares_getopt() command-line parser function as a source + code helper function, not belonging to the actual c-ares library. + +* February 19 2007 + +- Vlad Dinulescu added ares_parse_ns_reply(). + +* February 13 2007 + +- Yang Tse: Fix failure to get the search sequence of /etc/hosts and + DNS from /etc/nsswitch.conf, /etc/host.conf or /etc/svc.conf when + /etc/resolv.conf did not exist or was unable to read it. + +* November 22 2006 + +- Install ares_dns.h too + +- Michael Wallner fixed this problem: When I set domains in the options + struct, and there are domain/search entries in /etc/resolv.conf, the domains + of the options struct will be overridden. + +* November 6 2006 + +- Yang Tse removed a couple of potential zero size memory allocations. + +- Andreas Rieke fixed the line endings in the areslib.dsp file that I (Daniel) + broke in the 1.3.2 release. We should switch to a system where that file is + auto-generated. We could rip some code for that from curl... + +Version 1.3.2 (November 3, 2006) + +* October 12 2006 + +- Prevent ares_getsock() to overflow if more than 16 sockets are used. + +* September 11 2006 + +- Guilherme Balena Versiani: I noted a strange BUG in Win32 port + (ares_init.c/get_iphlpapi_dns_info() function): when I disable the network + by hand or disconnect the network cable in Windows 2000 or Windows XP, my + application gets 127.0.0.1 as the only name server. The problem comes from + 'GetNetworkParams' function, that returns the empty string "" as the only + name server in that case. Moreover, the Windows implementation of + inet_addr() returns INADDR_LOOPBACK instead of INADDR_NONE. + +* August 29 2006 + +- Brad Spencer did + + o made ares_version.h use extern "C" for c++ compilers + o fixed compiler warnings in ares_getnameinfo.c + o fixed a buffer position init for TCP reads + +* August 3 2006 + +- Ravi Pratap fixed ares_getsock() to actually return the proper bitmap and + not always zero! + +Version 1.3.1 (June 24, 2006) + +* July 23, 2006 + +- Gisle Vanem added getopt() to the ahost program. Currently accepts + only [-t {a|aaaa}] to specify address family in ares_gethostbyname(). + +* June 19, 2006 + +- (wahern) Removed "big endian" DNS section and RR data integer parser + macros from ares_dns.h, which break c-ares on my Sparc64. Bit-wise + operations in C operate on logical values. And in any event the octets are + already in big-endian (aka network) byte order so they're being reversed + (thus the source of the breakage). + +* June 18, 2006 + +- William Ahern handles EAGAIN/EWOULDBLOCK errors in most of the I/O calls + from area_process.c. + + TODO: Handle one last EAGAIN for a UDP socket send(2) in + ares__send_query(). + +* May 10, 2006 + +- Bram Matthys brought my attention to a libtool peculiarity where detecting + things such as C++ compiler actually is a bad thing and since we don't need + that detection I added a work-around, much inspired by a previous patch by + Paolo Bonzini. This also shortens the configure script quite a lot. + +* May 3, 2006 + +- Nick Mathewson added the ARES_OPT_SOCK_STATE_CB option that when set makes + c-ares call a callback on socket state changes. A better way than the + ares_getsock() to get full control over the socket state. + +* January 9, 2006 + +- Alexander Lazic improved the getservbyport_r() configure check. + +* January 6, 2006 + +- Alexander Lazic pointed out that the buildconf should use the ACLOCAL_FLAGS + variable for easier controlling what it does and how it runs. + +* January 5, 2006 + +- James Bursa fixed c-ares to find the hosts file on RISC OS, and made it + build with newer gcc versions that no longer defines "riscos". + +* December 22 + +- Daniel Stenberg added ares_getsock() that extracts the set of sockets to + wait for action on. Similar to ares_fds() but not restricted to using + select() for the waiting. + +* November 25 + +- Yang Tse fixed some send() / recv() compiler warnings + +* September 18 + +- Added constants that will be used by ares_getaddrinfo + +- Made ares_getnameinfo use the reentrant getservbyport (getservbyport_r) if it + is available to ensure it works properly in a threaded environment. + +* September 10 + +- configure fix for detecting a member in the sockaddr_in6 struct which failed + on ipv6-enabled HP-UX 11.00 + +Version 1.3.0 (August 29, 2005) + +* August 21 + +- Alfredo Tupone provided a fix for the Windows code in get_iphlpapi_dns_info() + when getting the DNS server etc. + +* June 19 + +- Added some checks for the addrinfo structure. + +* June 2 + +- William Ahern: + + Make UDP sockets non-blocking. I've confirmed that at least on Linux 2.4 a + read event can come back from poll() on a valid SOCK_DGRAM socket but + recv(2) will still block. This patch doesn't ignore EAGAIN in + read_udp_packets(), though maybe it should. (This patch was edited by Daniel + Stenberg and a new configure test was added (imported from curl's configure) + to properly detect what non-blocking socket approach to use.) + + I'm not quite sure how this was happening, but I've been seeing PTR queries + which seem to return empty responses. At least, they were empty when calling + ares_expand_name() on the record. Here's a patch which guarantees to + NUL-terminate the expanded name. The old behavior failed to NUL-terminate if + len was 0, and this was causing strlen() to run past the end of the buffer + after calling ares_expand_name() and getting ARES_SUCCESS as the return + value. If q is not greater than *s then it's equal and *s is always + allocated with at least one byte. + +* May 16 + +- Added ares_getnameinfo which mimics the getnameinfo API (another feature + that could use testing). + +* May 14 + +- Added an inet_ntop function from BIND for systems that do not have it. + +* April 9 + +- Made sortlist support IPv6 (this can probably use some testing). + +- Made sortlist support CIDR matching for IPv4. + +* April 8 + +- Added preliminary IPv6 support to ares_gethostbyname. Currently, sortlist + does not work with IPv6. Also provided an implementation of bitncmp from + BIND for systems that do not supply this function. This will be used to add + IPv6 support to sortlist. + +- Made ares_gethostbyaddr support IPv6 by specifying AF_INET6 as the family. + The function can lookup IPv6 addresses both from files (/etc/hosts) and + DNS lookups. + +* April 7 + +- Tupone Alfredo fixed includes of arpa/nameser_compat.h to build fine on Mac + OS X. + +* April 5 + +- Dominick Meglio: Provided implementations of inet_net_pton and inet_pton + from BIND for systems that do not include these functions. + +* March 11, 2005 + +- Dominick Meglio added ares_parse_aaaa_reply.c and did various + adjustments. The first little steps towards IPv6 support! + +* November 7 + +- Fixed the VC project and makefile to use ares_cancel and ares_version + +* October 24 + +- The released ares_version.h from 1.2.1 says 1.2.0 due to a maketgz flaw. + This is now fixed. + +Version 1.2.1 (October 20, 2004) + +* September 29 + +- Henrik Stoerner fix: got a report that Tru64 Unix (the unix from Digital + when they made Alpha's) uses /etc/svc.conf for the purpose fixed below for + other OSes. He made c-ares check for and understand it if present. + +- Now c-ares will use local host name lookup _before_ DNS resolving by default + if nothing else is told. + +* September 26 + +- Henrik Stoerner: found out that c-ares does not look at the /etc/host.conf + file to determine the sequence in which to search /etc/hosts and DNS. So on + systems where this order is defined by /etc/host.conf instead of a "lookup" + entry in /etc/resolv.conf, c-ares will always default to looking in DNS + first, and /etc/hosts second. + + c-ares now looks at + + 1) resolv.conf (for the "lookup" line); + 2) nsswitch.fon (for the "hosts:" line); + 3) host.conf (for the "order" line). + + First match wins. + +- Dominick Meglio patched: C-ares on Windows assumed that the HOSTS file is + located in a static location. It assumed + C:\Windows\System32\Drivers\Etc. This is a poor assumption to make. In fact, + the location of the HOSTS file can be changed via a registry setting. + + There is a key called DatabasePath which specifies the path to the HOSTS + file: + http://www.microsoft.com/technet/itsolutions/network/deploy/depovg/tcpip2k.mspx + + The patch will make c-ares correctly consult the registry for the location + of this file. + +* August 29 + +- Gisle Vanem fixed the MSVC build files. + +* August 20 + +- Gisle Vanem made c-ares build and work with his Watt-32 TCP/IP stack. + +* August 13 + +- Harshal Pradhan made a minor syntax change in ares_init.c to make it build + fine with MSVC 7.1 + +* July 24 + +- Made the lib get built static only if --enable-debug is used. + +- Gisle Vanem fixed: + + Basically in loops like handle_errors(), 'query->next' was assigned a local + variable and then query was referenced after the memory was freed by + next_server(). I've changed that so next_server() and end_query() returns + the next query. So callers should use this ret-value. + + The next problem was that 'server->tcp_buffer_pos' had a random value at + entry to 1st recv() (luckily causing Winsock to return ENOBUFS). + + I've also added a ares_writev() for Windows to streamline the code a bit + more. + +* July 20 +- Fixed a few variable return types for some system calls. Made configure + check for ssize_t to make it possible to use that when receiving the send() + error code. This is necessary to prevent compiler warnings on some systems. + +- Made configure create config.h, and all source files now include setup.h that + might include the proper config.h (or a handicrafted alternative). + +- Switched to 'ares_socket_t' type for sockets in ares, since Windows don't + use 'int' for that. + +- automake-ified and libool-ified c-ares. Now it builds libcares as a shared + lib on most platforms if wanted. (This bloated the size of the release + archive with another 200K!) + +- Makefile.am now uses Makefile.inc for the c sources, h headers and man + pages, to make it easier for other makefiles to use the exact same set of + files. + +- Adjusted 'maketgz' to use the new automake magic when building distribution + archives. + +- Anyone desires HTML and/or PDF versions of the man pages in the release + archives? + +* July 3 +- Günter Knauf made c-ares build and run on Novell Netware. + +* July 1 +- Gisle Vanem provided Makefile.dj to build with djgpp, added a few more djgpp + fixes and made ares not use 'errno' to provide further info on Windows. + +* June 30 +- Gisle Vanem made it build with djgpp and run fine with the Watt-32 stack. + +* June 10 +- Gisle Vanem's init patch for Windows: + + The init_by_resolv_conf() function fetches the DNS-server(s) + from a series of registry branches. + + This can be wrong in the case where DHCP has assigned nameservers, but the + user has overridden these servers with other prefered settings. Then it's + wrong to use the DHCPNAMESERVER setting in registry. + + In the case of no global DHCP-assigned or fixed servers, but DNS server(s) + per adapter, one has to query the adapter branches. But how can c-ares know + which adapter is valid for use? AFAICS it can't. There could be one adapter + that is down (e.g. a VPN adapter). + + So it's better to leave this to the IP Helper API (iphlapi) available in + Win-98/2000 and later. My patch falls-back to the old way if not available. + +* June 8 +- James Bursa fixed an init issue for RISC OS. + +* May 11 +- Nico Stappenbelt reported that when processing domain and search lines in + the resolv.conf file, the first entry encountered is processed and used as + the search list. According to the manual pages for both Linux, Solaris and + Tru64, the last entry of either a domain or a search field is used. + + This is now adjusted in the code + +Version 1.2.0 (April 13, 2004) + +* April 2, 2004 +- Updated various man pages to look nicer when converted to HTML on the web + site. + +* April 1, 2004 +- Dirk Manske provided a new function that is now named ares_cancel(). It is + used to cancel/cleanup a resolve/request made using ares functions on the + given ares channel. It does not destroy/kill the ares channel itself. + +- Dominick Meglio cleaned up the formatting in several man pages. + +* March 30, 2004 +- Dominick Meglio's new ares_expand_string. A helper function when decoding + incoming DNS packages. + +- Daniel Stenberg modified the Makefile.in to use a for loop for the man page + installation to improve overview and make it easier to add man pages. + +Version 1.1.0 (March 11, 2004) + +* March 9, 2004 +- Gisle Vanem improved build on Windows. + +* February 25, 2004 +- Dan Fandrich found a flaw in the Feb 22 fix. + +- Added better configure --enable-debug logic (taken from the curl configure + script). Added acinclude.m4 to the tarball. + +* February 23, 2004 +- Removed ares_free_errmem(), the function, the file and the man page. It was + not used and it did nothing. + +- Fixed a lot of code that wasn't "64bit clean" and thus caused a lot of + compiler warnings on picky compilers. + +* February 22, 2004 +- Dominick Meglio made ares init support multiple name servers in the + NameServer key on Windows. + +* February 16, 2004 +- Modified ares_private.h to include libcurl's memory debug header if + CURLDEBUG is set. This makes all the ares-functions supervised properly by + the curl test suite. This also forced me to add inclusion of the + ares_private.h header in a few more files that are using some kind of + memory-related resources. + +- Made the makefile only build ahost and adig if 'make demos' is used. + +* February 10, 2004 +- Dirk Manske made ares_version.h installed with 'make install' + +* February 4, 2004 +- ares_free_errmem() is subject for removal, it is simply present for future + purposes, and since we removed the extra parameter in strerror() it won't + be used by c-ares! +- configure --enable-debug now enables picky compiler options if gcc is used +- fixed several compiler warnings --enable-debug showed and Joerg Mueller-Tolk + reported + +Version 1.0.0 (February 3, 2004) + +* February 3, 2004 +- now we produce the libcares.a library instead of the previous libares.a + since we are no longer compatible + +* February 2, 2004 + +- ares_strerror() has one argument less. This is the first official + modification of the existing provided ares API. + +* January 29, 2004 + +- Dirk Manske fixed how the socket is set non-blocking. + +* January 4, 2004 + +- Dominick Meglio made the private gettimeofday() become ares_gettimeofday() + instead in order to not pollute the name space and risk colliding with + other libraries' versions of this function. + +* October 24, 2003. Daniel Stenberg + + Added ares_version(). + +Version 1.0-pre1 (8 October 2003) + +- James Bursa made it run on RISC OS + +- Dominick Meglio made it run fine on NT4 + +- Duncan Wilcox made it work fine on Mac OS X + +- Daniel Stenberg adjusted the windows port + +- liren at vivisimo.com made the initial windows port + +* Imported the sources from ares 1.1.1 diff --git a/Makefile.Watcom b/Makefile.Watcom new file mode 100644 index 0000000..7a450a0 --- /dev/null +++ b/Makefile.Watcom @@ -0,0 +1,164 @@ +# +# Watcom / OpenWatcom / Win32 makefile for cares. +# Quick hack by Guenter; comments to: /dev/nul +# + +!ifndef %watcom +!error WATCOM environment variable not set! +!else +SYS_INCL = -I$(%watcom)\h\nt -I$(%watcom)\h +SYS_LIBS = $(%watcom)\lib386\nt;$(%watcom)\lib386 +!endif + +!ifdef %libname +LIBNAME = $(%libname) +!else +LIBNAME = cares +!endif +TARGETS = $(LIBNAME).dll $(LIBNAME)_imp.lib $(LIBNAME).lib +DEMOS = adig.exe ahost.exe acountry.exe + +CC = wcc386 +LD = wlink +AR = wlib +RC = wrc + +!ifdef __LOADDLL__ +! loaddll wcc386 wccd386 +! loaddll wpp386 wppd386 +! loaddll wlib wlibd +!endif + +!if $(__VERSION__) < 1250 +RM = del /q /f 2>NUL +!else +RM = rm -f +!endif +MD = mkdir +RD = rmdir /q /s 2>NUL +CP = copy + +CFLAGS = -3r -mf -hc -zff -zgf -zq -zm -zc -s -fr=con -w2 -fpi -oilrtfm & + -wcd=201 -bt=nt -d+ -dWIN32 -dCARES_BUILDING_LIBRARY & + -dNTDDI_VERSION=0x05010000 -I. $(SYS_INCL) + +LFLAGS = option quiet, map, caseexact, eliminate + +!ifdef %debug +DEBUG = -dDEBUG=1 -dDEBUGBUILD +CFLAGS += -d3 $(DEBUG) +LFLAGS += debug all +!else +CFLAGS += -d0 +!endif + +CFLAGS += -d_WIN32_WINNT=0x0501 + +# +# Change to suite. +# +!ifdef %use_watt32 +CFLAGS += -dWATT32 -I$(%watt_root)\inc +!endif + +OBJ_BASE = WC_Win32.obj +LINK_ARG = $(OBJ_BASE)\dyn\wlink.arg +LIB_ARG = $(OBJ_BASE)\stat\wlib.arg + +# In order to process Makefile.inc wmake must be called with -u switch! +!ifneq __MAKEOPTS__ -u +!error You MUST call wmake with the -u switch! +!else +!include Makefile.inc +!endif + +OBJS = $(CSOURCES:.c=.obj) +OBJS = $OBJ_DIR\$(OBJS: = $OBJ_DIR\) + +# +# Use $(OBJS) as a template to generate $(OBJS_STAT) and $(OBJS_DYN). +# +OBJ_DIR = $(OBJ_BASE)\stat +OBJS_STAT = $+ $(OBJS) $- + +OBJ_DIR = $(OBJ_BASE)\dyn +OBJS_DYN = $+ $(OBJS) $- + +ARESBUILDH = ares_build.h +RESOURCE = $(OBJ_BASE)\dyn\cares.res + +all: $(ARESBUILDH) $(OBJ_BASE) $(TARGETS) $(DEMOS) .SYMBOLIC + @echo Welcome to cares + +$(OBJ_BASE): + -$(MD) $^@ + -$(MD) $^@\stat + -$(MD) $^@\dyn + -$(MD) $^@\demos + +$(ARESBUILDH): .EXISTSONLY + $(CP) $^@.dist $^@ + +$(LIBNAME).dll: $(OBJS_DYN) $(RESOURCE) $(LINK_ARG) + $(LD) name $^@ @$]@ + +$(LIBNAME).lib: $(OBJS_STAT) $(LIB_ARG) + $(AR) -q -b -c $^@ @$]@ + +adig.exe: $(OBJ_BASE)\demos\adig.obj $(OBJ_BASE)\demos\ares_getopt.obj $(LIBNAME).lib + $(LD) name $^@ system nt $(LFLAGS) file { $(OBJ_BASE)\demos\ares_getopt.obj $[@ } library $]@, ws2_32.lib + +ahost.exe: $(OBJ_BASE)\demos\ahost.obj $(OBJ_BASE)\demos\ares_getopt.obj $(LIBNAME).lib + $(LD) name $^@ system nt $(LFLAGS) file { $(OBJ_BASE)\demos\ares_getopt.obj $[@ } library $]@, ws2_32.lib + +acountry.exe: $(OBJ_BASE)\demos\acountry.obj $(OBJ_BASE)\demos\ares_getopt.obj $(LIBNAME).lib + $(LD) name $^@ system nt $(LFLAGS) file { $(OBJ_BASE)\demos\ares_getopt.obj $[@ } library $]@, ws2_32.lib + +clean: .SYMBOLIC + -$(RM) $(OBJS_STAT) + -$(RM) $(OBJS_DYN) + -$(RM) $(RESOURCE) $(LINK_ARG) $(LIB_ARG) + +vclean realclean: clean .SYMBOLIC + -$(RM) $(TARGETS) $(LIBNAME).map + -$(RM) $(DEMOS) $(DEMOS:.exe=.map) + -$(RD) $(OBJ_BASE)\stat + -$(RD) $(OBJ_BASE)\dyn + -$(RD) $(OBJ_BASE)\demos + -$(RD) $(OBJ_BASE) + +.ERASE +$(RESOURCE): cares.rc .AUTODEPEND + $(RC) $(DEBUG) -q -r -zm -I..\include $(SYS_INCL) $[@ -fo=$^@ + +.ERASE +.c{$(OBJ_BASE)\dyn}.obj: + $(CC) $(CFLAGS) -bd $[@ -fo=$^@ + +.ERASE +.c{$(OBJ_BASE)\stat}.obj: + $(CC) $(CFLAGS) -DCARES_STATICLIB $[@ -fo=$^@ + +.ERASE +.c{$(OBJ_BASE)\demos}.obj: + $(CC) $(CFLAGS) -DCARES_STATICLIB $[@ -fo=$^@ + +$(LINK_ARG): $(__MAKEFILES__) + %create $^@ + @%append $^@ system nt dll + @%append $^@ file { $(OBJS_DYN) } + @%append $^@ option res=$(RESOURCE), implib=$(LIBNAME)_imp.lib + @%append $^@ $(LFLAGS) + @%append $^@ libpath $(SYS_LIBS) +# @%append $^@ library clib3r.lib +!ifdef %use_watt32 + @%append $^@ library $(%watt_root)\lib\wattcpw_imp.lib +!else + @%append $^@ library ws2_32.lib +!endif + +$(LIB_ARG): $(__MAKEFILES__) + %create $^@ + @for %f in ($(OBJS_STAT)) do @%append $^@ +- %f + + diff --git a/Makefile.am b/Makefile.am new file mode 100644 index 0000000..8969403 --- /dev/null +++ b/Makefile.am @@ -0,0 +1,175 @@ +AUTOMAKE_OPTIONS = foreign nostdinc + +ACLOCAL_AMFLAGS = -I m4 + +# Specify our include paths here, and do it relative to $(top_srcdir) and +# $(top_builddir), to ensure that these paths which belong to the library +# being currently built and tested are searched before the library which +# might possibly already be installed in the system. +# +# When using the low-level hard-hacking memory leak tracking code from +# libcurl the generated curl/curlbuild.h file must also be reachable. +# Using the libcurl lowlevel code from within c-ares library is ugly and +# only works when c-ares is built and linked with a similarly debug-build +# libcurl, but we do this anyway for convenience. +# +# $(top_builddir)/../include/curl for generated curlbuild.h included from curl.h +# $(top_builddir)/../include is for libcurl's generated curl/curlbuild.h file +# $(top_srcdir)/../include is for libcurl's external include files +# $(top_builddir)/../lib is for libcurl's generated lib/curl_config.h file +# $(top_srcdir)/../lib is for libcurl's lib/setup.h and other "private" files +# $(top_builddir) is for c-ares's generated ares_config.h file +# $(top_srcdir) is for c-ares's ares_setup.h and other "c-ares-private" files + +if CURLDEBUG +INCLUDES = -I$(top_builddir)/../include/curl \ + -I$(top_builddir)/../include \ + -I$(top_srcdir)/../include \ + -I$(top_builddir)/../lib \ + -I$(top_srcdir)/../lib \ + -I$(top_builddir) \ + -I$(top_srcdir) +else +INCLUDES = -I$(top_builddir) \ + -I$(top_srcdir) +endif + +lib_LTLIBRARIES = libcares.la + +man_MANS = $(MANPAGES) + +MSVCFILES = vc/vc6aws.dsw vc/acountry/vc6acountry.dsp vc/adig/vc6adig.dsp \ + vc/ahost/vc6ahost.dsp vc/cares/vc6cares.dsp vc/cares/vc6cares.dsw + +if CURLDEBUG +PROGS = +else +PROGS = ahost adig acountry +endif + +noinst_PROGRAMS =$(PROGS) + +# adig and ahost are just sample programs and thus not mentioned with the +# regular sources and headers +EXTRA_DIST = AUTHORS CHANGES README.cares Makefile.inc Makefile.dj \ + Makefile.m32 Makefile.netware Makefile.msvc Makefile.Watcom $(man_MANS) \ + config-win32.h RELEASE-NOTES libcares.pc.in buildconf get_ver.awk maketgz \ + TODO ares_build.h.in $(PDFPAGES) cares.rc README.msvc $(MSVCFILES) \ + $(CSOURCES) $(HHEADERS) config-dos.h acountry.1 adig.1 ahost.1 + +CLEANFILES = $(PDFPAGES) $(HTMLPAGES) + +DISTCLEANFILES = ares_build.h + +pkgconfigdir = $(libdir)/pkgconfig +pkgconfig_DATA = libcares.pc + +VER=-version-info 2:0:0 +# This flag accepts an argument of the form current[:revision[:age]]. So, +# passing -version-info 3:12:1 sets current to 3, revision to 12, and age to +# 1. +# +# If either revision or age are omitted, they default to 0. Also note that age +# must be less than or equal to the current interface number. +# +# Here are a set of rules to help you update your library version information: +# +# 1.Start with version information of 0:0:0 for each libtool library. +# +# 2.Update the version information only immediately before a public release of +# your software. More frequent updates are unnecessary, and only guarantee +# that the current interface number gets larger faster. +# +# 3.If the library source code has changed at all since the last update, then +# increment revision (c:r+1:a) +# +# 4.If any interfaces have been added, removed, or changed since the last +# update, increment current, and set revision to 0. (c+1:r=0:a) +# +# 5.If any interfaces have been added since the last public release, then +# increment age. (c:r:a+1) +# +# 6.If any interfaces have been removed since the last public release, then +# set age to 0. (c:r:a=0) +# + +if NO_UNDEFINED +# The -no-undefined flag is crucial for this to build fine on some platforms +UNDEF = -no-undefined +endif + +libcares_la_LDFLAGS = $(UNDEF) $(VER) + +# Add -Werror if defined +CFLAGS += @CARES_CFLAG_EXTRAS@ + +# Makefile.inc provides the CSOURCES and HHEADERS defines +include Makefile.inc + +libcares_la_SOURCES = $(CSOURCES) $(HHEADERS) + +# where to install the c-ares headers +libcares_ladir = $(includedir) +# what headers to install on 'make install': +libcares_la_HEADERS = ares.h ares_version.h ares_dns.h \ + ares_build.h ares_rules.h + +ahost_SOURCES = ahost.c $(SAMPLESOURCES) $(SAMPLEHEADERS) +ahost_LDADD = $(top_builddir)/libcares.la +ahost_CFLAGS = $(AM_CFLAGS) + +adig_SOURCES = adig.c $(SAMPLESOURCES) $(SAMPLEHEADERS) +adig_LDADD = $(top_builddir)/libcares.la +adig_CFLAGS = $(AM_CFLAGS) + +acountry_SOURCES = acountry.c $(SAMPLESOURCES) $(SAMPLEHEADERS) +acountry_LDADD = $(top_builddir)/libcares.la +acountry_CFLAGS = $(AM_CFLAGS) + +SOURCEDMANDIR = man3 +SOURCEDMANPAGES = ares_init.3 + +clean-local: clean-sourced-manpages + +clean-sourced-manpages: + @srcdmandir='$(SOURCEDMANDIR)'; \ + echo "rm -rf $(top_builddir)/$$srcdmandir"; \ + rm -rf $(top_builddir)/$$srcdmandir + +sourced-manpages: clean-sourced-manpages + @srcdmandir='$(SOURCEDMANDIR)'; \ + srcdmanfiles='$(SOURCEDMANPAGES)'; \ + mkdir $(top_builddir)/$$srcdmandir; \ + for file in $$srcdmanfiles; do \ + if test -f $(top_srcdir)/$$file; then \ + echo "cp $(top_srcdir)/$$file $(top_builddir)/$$srcdmandir/$$file"; \ + cp $(top_srcdir)/$$file $(top_builddir)/$$srcdmandir/$$file; \ + fi; \ + done + +MAN2HTML = roffit --mandir=. < $< >$@ + +SUFFIXES = .3 .html + +html: sourced-manpages $(HTMLPAGES) + +.3.html: + $(MAN2HTML) + +pdf: sourced-manpages $(PDFPAGES) + +.3.pdf: + @(foo=`echo $@ | sed -e 's/\.[0-9]$$//g'`; \ + groff -Tps -man $< >$$foo.ps; \ + ps2pdf $$foo.ps $@; \ + rm $$foo.ps; \ + echo "converted $< to $@") + +# Make files named *.dist replace the file without .dist extension +dist-hook: + find $(distdir) -name "*.dist" -exec rm {} \; + (distit=`find $(srcdir) -name "*.dist"`; \ + for file in $$distit; do \ + strip=`echo $$file | sed -e s/^$(srcdir)// -e s/\.dist//`; \ + cp $$file $(distdir)$$strip; \ + done) diff --git a/Makefile.dj b/Makefile.dj new file mode 100644 index 0000000..799611f --- /dev/null +++ b/Makefile.dj @@ -0,0 +1,85 @@ +# +# c-ares Makefile for djgpp/gcc/Watt-32. +# By Gisle Vanem <gvanem@broadpark.no> 2004. +# + + +TOPDIR = .. + +DEPEND_PREREQ = ares_config.h + +include ../packages/DOS/common.dj +include Makefile.inc + +CFLAGS += -DWATT32 -Dselect=select_s + +LDFLAGS = -s + +ifeq ($(USE_CURLDEBUG),1) + EX_LIBS = ../lib/libcurl.a + OBJ_HACK = $(OBJECTS) +else + OBJ_HACK = libcares.a +endif + +ifeq ($(USE_SSL),1) + EX_LIBS += $(OPENSSL_ROOT)/lib/libssl.a $(OPENSSL_ROOT)/lib/libcrypt.a +endif + +ifeq ($(USE_ZLIB),1) + EX_LIBS += $(ZLIB_ROOT)/libz.a +endif + +ifeq ($(USE_IDNA),1) + EX_LIBS += $(LIBIDN_ROOT)/lib/dj_obj/libidn.a -liconv +endif + +EX_LIBS += $(WATT32_ROOT)/lib/libwatt.a + +OBJECTS = $(addprefix $(OBJ_DIR)/, $(CSOURCES:.c=.o)) + +all: $(OBJ_DIR) ares_config.h libcares.a ahost.exe adig.exe acountry.exe + @echo Welcome to c-ares. + +libcares.a: $(OBJECTS) + ar rs $@ $? + +ares_config.h: config-dos.h + $(COPY) $^ $@ + +ahost.exe: ahost.c $(OBJ_DIR)/ares_getopt.o $(OBJ_HACK) + $(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^ $(EX_LIBS) + +adig.exe: adig.c $(OBJ_DIR)/ares_getopt.o $(OBJ_HACK) + $(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^ $(EX_LIBS) + +acountry.exe: acountry.c $(OBJ_DIR)/ares_getopt.o $(OBJ_HACK) + $(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^ $(EX_LIBS) + +# clean generated files +# +genclean: + - $(DELETE) ares_config.h + +# clean object files and subdir +# +objclean: genclean + - $(DELETE) $(OBJ_DIR)$(DS)*.o + - $(RMDIR) $(OBJ_DIR) + +# clean without removing built library and programs +# +clean: objclean + - $(DELETE) depend.dj + +# clean everything +# +realclean vclean: clean + - $(DELETE) libcares.a + - $(DELETE) acountry.exe + - $(DELETE) adig.exe + - $(DELETE) ahost.exe + - $(DELETE) libcares.a + +-include depend.dj + diff --git a/Makefile.in b/Makefile.in new file mode 100644 index 0000000..1b8b556 --- /dev/null +++ b/Makefile.in @@ -0,0 +1,1458 @@ +# Makefile.in generated by automake 1.9.6 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + + + + +srcdir = @srcdir@ +top_srcdir = @top_srcdir@ +VPATH = @srcdir@ 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Makefile.m32 Makefile.netware Makefile.msvc Makefile.Watcom $(man_MANS) \ + config-win32.h RELEASE-NOTES libcares.pc.in buildconf get_ver.awk maketgz \ + TODO ares_build.h.in $(PDFPAGES) cares.rc README.msvc $(MSVCFILES) \ + $(CSOURCES) $(HHEADERS) config-dos.h acountry.1 adig.1 ahost.1 + +CLEANFILES = $(PDFPAGES) $(HTMLPAGES) +DISTCLEANFILES = ares_build.h +pkgconfigdir = $(libdir)/pkgconfig +pkgconfig_DATA = libcares.pc +VER = -version-info 2:0:0 +# This flag accepts an argument of the form current[:revision[:age]]. So, +# passing -version-info 3:12:1 sets current to 3, revision to 12, and age to +# 1. +# +# If either revision or age are omitted, they default to 0. Also note that age +# must be less than or equal to the current interface number. +# +# Here are a set of rules to help you update your library version information: +# +# 1.Start with version information of 0:0:0 for each libtool library. +# +# 2.Update the version information only immediately before a public release of +# your software. More frequent updates are unnecessary, and only guarantee +# that the current interface number gets larger faster. +# +# 3.If the library source code has changed at all since the last update, then +# increment revision (c:r+1:a) +# +# 4.If any interfaces have been added, removed, or changed since the last +# update, increment current, and set revision to 0. (c+1:r=0:a) +# +# 5.If any interfaces have been added since the last public release, then +# increment age. (c:r:a+1) +# +# 6.If any interfaces have been removed since the last public release, then +# set age to 0. (c:r:a=0) +# + +# The -no-undefined flag is crucial for this to build fine on some platforms +@NO_UNDEFINED_TRUE@UNDEF = -no-undefined +libcares_la_LDFLAGS = $(UNDEF) $(VER) +CSOURCES = ares__close_sockets.c \ + ares__get_hostent.c \ + ares__read_line.c \ + ares__timeval.c \ + ares_cancel.c \ + ares_data.c \ + ares_destroy.c \ + ares_expand_name.c \ + ares_expand_string.c \ + ares_fds.c \ + ares_free_hostent.c \ + ares_free_string.c \ + ares_getenv.c \ + ares_gethostbyaddr.c \ + ares_gethostbyname.c \ + ares_getnameinfo.c \ + ares_getsock.c \ + ares_init.c \ + ares_library_init.c \ + ares_llist.c \ + ares_mkquery.c \ + ares_nowarn.c \ + ares_options.c \ + ares_parse_a_reply.c \ + ares_parse_aaaa_reply.c \ + ares_parse_mx_reply.c \ + ares_parse_ns_reply.c \ + ares_parse_ptr_reply.c \ + ares_parse_srv_reply.c \ + ares_parse_txt_reply.c \ + ares_platform.c \ + ares_process.c \ + ares_query.c \ + ares_search.c \ + ares_send.c \ + ares_strcasecmp.c \ + ares_strdup.c \ + ares_strerror.c \ + ares_timeout.c \ + ares_version.c \ + ares_writev.c \ + bitncmp.c \ + inet_net_pton.c \ + inet_ntop.c \ + windows_port.c + +HHEADERS = ares.h \ + ares_build.h \ + ares_data.h \ + ares_dns.h \ + ares_getenv.h \ + ares_iphlpapi.h \ + ares_ipv6.h \ + ares_library_init.h \ + ares_llist.h \ + ares_nowarn.h \ + ares_platform.h \ + ares_private.h \ + ares_rules.h \ + ares_strcasecmp.h \ + ares_strdup.h \ + ares_version.h \ + ares_writev.h \ + bitncmp.h \ + inet_net_pton.h \ + inet_ntop.h \ + nameser.h \ + ares_setup.h \ + setup_once.h + +MANPAGES = ares_cancel.3 \ + ares_destroy.3 \ + ares_destroy_options.3 \ + ares_dup.3 \ + ares_expand_name.3 \ + ares_expand_string.3 \ + ares_fds.3 \ + ares_free_data.3 \ + ares_free_hostent.3 \ + ares_free_string.3 \ + ares_get_servers.3 \ + ares_gethostbyaddr.3 \ + ares_gethostbyname.3 \ + ares_gethostbyname_file.3 \ + ares_getnameinfo.3 \ + ares_getsock.3 \ + ares_init.3 \ + ares_init_options.3 \ + ares_library_cleanup.3 \ + ares_library_init.3 \ + ares_mkquery.3 \ + ares_parse_a_reply.3 \ + ares_parse_aaaa_reply.3 \ + ares_parse_mx_reply.3 \ + ares_parse_ns_reply.3 \ + ares_parse_ptr_reply.3 \ + ares_parse_srv_reply.3 \ + ares_parse_txt_reply.3 \ + ares_process.3 \ + ares_query.3 \ + ares_save_options.3 \ + ares_search.3 \ + ares_send.3 \ + ares_set_servers.3 \ + ares_set_socket_callback.3 \ + ares_strerror.3 \ + ares_timeout.3 \ + ares_version.3 + +HTMLPAGES = ares_cancel.html \ + ares_destroy.html \ + ares_destroy_options.html \ + ares_dup.html \ + ares_expand_name.html \ + ares_expand_string.html \ + ares_fds.html \ + ares_free_data.html \ + ares_free_hostent.html \ + ares_free_string.html \ + ares_get_servers.html \ + ares_gethostbyaddr.html \ + ares_gethostbyname.html \ + ares_gethostbyname_file.html \ + ares_getnameinfo.html \ + ares_getsock.html \ + ares_init.html \ + ares_init_options.html \ + ares_library_cleanup.html \ + ares_library_init.html \ + ares_mkquery.html \ + ares_parse_a_reply.html \ + ares_parse_aaaa_reply.html \ + ares_parse_mx_reply.html \ + ares_parse_ns_reply.html \ + ares_parse_ptr_reply.html \ + ares_parse_srv_reply.html \ + ares_parse_txt_reply.html \ + ares_process.html \ + ares_query.html \ + ares_save_options.html \ + ares_search.html \ + ares_send.html \ + ares_set_servers.html \ + ares_set_socket_callback.html \ + ares_strerror.html \ + ares_timeout.html \ + ares_version.html + +PDFPAGES = ares_cancel.pdf \ + ares_destroy.pdf \ + ares_destroy_options.pdf \ + ares_dup.pdf \ + ares_expand_name.pdf \ + ares_expand_string.pdf \ + ares_fds.pdf \ + ares_free_data.pdf \ + ares_free_hostent.pdf \ + ares_free_string.pdf \ + ares_get_servers.pdf \ + ares_gethostbyaddr.pdf \ + ares_gethostbyname.pdf \ + ares_gethostbyname_file.pdf \ + ares_getnameinfo.pdf \ + ares_getsock.pdf \ + ares_init.pdf \ + ares_init_options.pdf \ + ares_library_cleanup.pdf \ + ares_library_init.pdf \ + ares_mkquery.pdf \ + ares_parse_a_reply.pdf \ + ares_parse_aaaa_reply.pdf \ + 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cp $$file $(distdir)$$strip; \ + done) +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/Makefile.inc b/Makefile.inc new file mode 100644 index 0000000..d6d4851 --- /dev/null +++ b/Makefile.inc @@ -0,0 +1,199 @@ + +CSOURCES = ares__close_sockets.c \ + ares__get_hostent.c \ + ares__read_line.c \ + ares__timeval.c \ + ares_cancel.c \ + ares_data.c \ + ares_destroy.c \ + ares_expand_name.c \ + ares_expand_string.c \ + ares_fds.c \ + ares_free_hostent.c \ + ares_free_string.c \ + ares_getenv.c \ + ares_gethostbyaddr.c \ + ares_gethostbyname.c \ + ares_getnameinfo.c \ + ares_getsock.c \ + ares_init.c \ + ares_library_init.c \ + ares_llist.c \ + ares_mkquery.c \ + ares_nowarn.c \ + ares_options.c \ + ares_parse_a_reply.c \ + ares_parse_aaaa_reply.c \ + ares_parse_mx_reply.c \ + ares_parse_ns_reply.c \ + ares_parse_ptr_reply.c \ + ares_parse_srv_reply.c \ + ares_parse_txt_reply.c \ + ares_platform.c \ + ares_process.c \ + ares_query.c \ + ares_search.c \ + ares_send.c \ + ares_strcasecmp.c \ + ares_strdup.c \ + ares_strerror.c \ + ares_timeout.c \ + ares_version.c \ + ares_writev.c \ + bitncmp.c \ + inet_net_pton.c \ + inet_ntop.c \ + windows_port.c + +HHEADERS = ares.h \ + ares_build.h \ + ares_data.h \ + ares_dns.h \ + ares_getenv.h \ + ares_iphlpapi.h \ + ares_ipv6.h \ + ares_library_init.h \ + ares_llist.h \ + ares_nowarn.h \ + ares_platform.h \ + ares_private.h \ + ares_rules.h \ + ares_strcasecmp.h \ + ares_strdup.h \ + ares_version.h \ + ares_writev.h \ + bitncmp.h \ + inet_net_pton.h \ + inet_ntop.h \ + nameser.h \ + ares_setup.h \ + setup_once.h + +MANPAGES = ares_cancel.3 \ + ares_destroy.3 \ + ares_destroy_options.3 \ + ares_dup.3 \ + ares_expand_name.3 \ + ares_expand_string.3 \ + ares_fds.3 \ + ares_free_data.3 \ + ares_free_hostent.3 \ + ares_free_string.3 \ + ares_get_servers.3 \ + ares_gethostbyaddr.3 \ + ares_gethostbyname.3 \ + ares_gethostbyname_file.3 \ + ares_getnameinfo.3 \ + ares_getsock.3 \ + ares_init.3 \ + ares_init_options.3 \ + ares_library_cleanup.3 \ + ares_library_init.3 \ + ares_mkquery.3 \ + ares_parse_a_reply.3 \ + ares_parse_aaaa_reply.3 \ + ares_parse_mx_reply.3 \ + ares_parse_ns_reply.3 \ + ares_parse_ptr_reply.3 \ + ares_parse_srv_reply.3 \ + ares_parse_txt_reply.3 \ + ares_process.3 \ + ares_query.3 \ + ares_save_options.3 \ + ares_search.3 \ + ares_send.3 \ + ares_set_servers.3 \ + ares_set_socket_callback.3 \ + ares_strerror.3 \ + ares_timeout.3 \ + ares_version.3 + +HTMLPAGES = ares_cancel.html \ + ares_destroy.html \ + ares_destroy_options.html \ + ares_dup.html \ + ares_expand_name.html \ + ares_expand_string.html \ + ares_fds.html \ + ares_free_data.html \ + ares_free_hostent.html \ + ares_free_string.html \ + ares_get_servers.html \ + ares_gethostbyaddr.html \ + ares_gethostbyname.html \ + ares_gethostbyname_file.html \ + ares_getnameinfo.html \ + ares_getsock.html \ + ares_init.html \ + ares_init_options.html \ + ares_library_cleanup.html \ + ares_library_init.html \ + ares_mkquery.html \ + ares_parse_a_reply.html \ + ares_parse_aaaa_reply.html \ + ares_parse_mx_reply.html \ + ares_parse_ns_reply.html \ + ares_parse_ptr_reply.html \ + ares_parse_srv_reply.html \ + ares_parse_txt_reply.html \ + ares_process.html \ + ares_query.html \ + ares_save_options.html \ + ares_search.html \ + ares_send.html \ + ares_set_servers.html \ + ares_set_socket_callback.html \ + ares_strerror.html \ + ares_timeout.html \ + ares_version.html + +PDFPAGES = ares_cancel.pdf \ + ares_destroy.pdf \ + ares_destroy_options.pdf \ + ares_dup.pdf \ + ares_expand_name.pdf \ + ares_expand_string.pdf \ + ares_fds.pdf \ + ares_free_data.pdf \ + ares_free_hostent.pdf \ + ares_free_string.pdf \ + ares_get_servers.pdf \ + ares_gethostbyaddr.pdf \ + ares_gethostbyname.pdf \ + ares_gethostbyname_file.pdf \ + ares_getnameinfo.pdf \ + ares_getsock.pdf \ + ares_init.pdf \ + ares_init_options.pdf \ + ares_library_cleanup.pdf \ + ares_library_init.pdf \ + ares_mkquery.pdf \ + ares_parse_a_reply.pdf \ + ares_parse_aaaa_reply.pdf \ + ares_parse_mx_reply.pdf \ + ares_parse_ns_reply.pdf \ + ares_parse_ptr_reply.pdf \ + ares_parse_srv_reply.pdf \ + ares_parse_txt_reply.pdf \ + ares_process.pdf \ + ares_query.pdf \ + ares_save_options.pdf \ + ares_search.pdf \ + ares_send.pdf \ + ares_set_servers.pdf \ + ares_set_socket_callback.pdf \ + ares_strerror.pdf \ + ares_timeout.pdf \ + ares_version.pdf + +SAMPLESOURCES = ares_getopt.c \ + ares_nowarn.c \ + ares_strcasecmp.c \ + inet_net_pton.c \ + inet_ntop.c + +SAMPLEHEADERS = ares_getopt.h \ + ares_nowarn.h \ + ares_strcasecmp.h \ + inet_net_pton.h \ + inet_ntop.h diff --git a/Makefile.m32 b/Makefile.m32 new file mode 100644 index 0000000..52d9310 --- /dev/null +++ b/Makefile.m32 @@ -0,0 +1,68 @@ +############################################################# +# +## Makefile for building libcares.a with MingW32 (GCC-3.2) +## Use: make -f Makefile.m32 [demos] +## +## Quick hack by Guenter; comments to: /dev/nul +# +######################################################## +## Nothing more to do below this line! + +LIB = libcares.a + +CC = gcc +LD = gcc +RANLIB = ranlib +#RM = rm -f + +CFLAGS = -O2 -Wall +LDFLAGS = -s +LIBS = -lwsock32 + +# Makefile.inc provides the CSOURCES and HHEADERS defines +include Makefile.inc + +OBJLIB := $(patsubst %.c,%.o,$(strip $(CSOURCES))) + + +$(LIB): $(OBJLIB) + ar cru $@ $^ + $(RANLIB) $@ + +all: $(LIB) demos + +demos: adig.exe ahost.exe acountry.exe + +tags: + etags *.[ch] + +%.exe: %.o ares_getopt.o $(LIB) + $(LD) $(LDFLAGS) -o $@ $^ $(LIBS) + +$(OBJLIB): ares.h ares_dns.h ares_private.h ares_build.h ares_rules.h + +.c.o: + $(CC) $(CFLAGS) -c $< + +check: + +install: + ${top_srcdir}/mkinstalldirs ${DESTDIR}${libdir} + ${top_srcdir}/mkinstalldirs ${DESTDIR}${includedir} + ${top_srcdir}/mkinstalldirs ${DESTDIR}${mandir}/man3 + ${INSTALL} -m 644 $(LIB) ${DESTDIR}${libdir} + ${RANLIB} ${DESTDIR}${libdir}/$(LIB) + chmod u-w ${DESTDIR}${libdir}/$(LIB) + ${INSTALL} -m 444 ${srcdir}/ares.h ${DESTDIR}${includedir} + ${INSTALL} -m 444 ${srcdir}/ares_build.h ${DESTDIR}${includedir} + ${INSTALL} -m 444 ${srcdir}/ares_rules.h ${DESTDIR}${includedir} + (for man in $(MANPAGES); do \ + ${INSTALL} -m 444 ${srcdir}/$${man} ${DESTDIR}${mandir}/man3; \ + done) + +clean: + $(RM) ares_getopt.o $(OBJLIB) $(LIB) adig.exe ahost.exe acountry.exe + +distclean: clean + $(RM) config.cache config.log config.status Makefile + diff --git a/Makefile.msvc b/Makefile.msvc new file mode 100644 index 0000000..64af1c1 --- /dev/null +++ b/Makefile.msvc @@ -0,0 +1,519 @@ + +# Copyright (C) 2009-2010 by Daniel Stenberg +# +# Permission to use, copy, modify, and distribute this +# software and its documentation for any purpose and without +# fee is hereby granted, provided that the above copyright +# notice appear in all copies and that both that copyright +# notice and this permission notice appear in supporting +# documentation, and that the name of M.I.T. not be used in +# advertising or publicity pertaining to distribution of the +# software without specific, written prior permission. +# M.I.T. makes no representations about the suitability of +# this software for any purpose. It is provided "as is" +# without express or implied warranty. + +# ------------------------------------------------------------------------------ +# +# Makefile for building c-ares libraries and sample programs with MSVC. +# +# Usage: nmake /f makefile.msvc CFG=<config> <target> +# +# <config> must be one of: [ lib-release | lib-debug | dll-release | dll-debug } +# <target> must be one of: [ ALL | c-ares | acountry | adig | ahost | clean } +# +# If a <target> other than ALL or clean is given, <config> becomes mandatory. +# +# If neither <config> nor <target> are specified this results in +# all targets being built for all <config> c-ares library types. +# +# This makefile must be processed from the subdir where it is located. +# +# All results are generated below a subdirectory named msvcXXX. +# +# ------------------------------------------------------------------------------ + +NAME = cares + +# ------------------------------------------------ +# c-ares static and dynamic libraries common base +# file names for release and debug configurations +# ------------------------------------------------ + +STA_LIB_REL = lib$(NAME) +DYN_LIB_REL = $(NAME) +STA_LIB_DBG = $(STA_LIB_REL)d +DYN_LIB_DBG = $(DYN_LIB_REL)d + +# ------------------------------------------- +# Base names for c-ares DLL import libraries +# ------------------------------------------- + +IMP_LIB_REL = $(DYN_LIB_REL) +IMP_LIB_DBG = $(DYN_LIB_DBG) + +# -------------------------- +# Runtime library selection +# -------------------------- + +RTLIB = /MD +RTLIBD = /MDd + +!IF "$(RTLIBCFG)" == "static" +RTLIB = /MT +RTLIBD = /MTd +!ENDIF + +# -------------------------------------------------------- +# Define USE_WATT32 to 1 to use the Watt-32 tcp/ip stack, +# otherwise Winsock tcp/ip stack will be used as default. +# -------------------------------------------------------- + +USE_WATT32 = 0 + +# ------------------------------------------- +# Detect NMAKE version deducing MSVC version +# ------------------------------------------- + +!IFNDEF _NMAKE_VER +! MESSAGE Macro _NMAKE_VER not defined. +! MESSAGE Use MSVC's NMAKE to process this makefile. +! ERROR See previous message. +!ENDIF + +!IF "$(_NMAKE_VER)" == "6.00.8168.0" +CC_VERS_NUM = 60 +!ELSEIF "$(_NMAKE_VER)" == "6.00.9782.0" +CC_VERS_NUM = 60 +!ELSEIF "$(_NMAKE_VER)" == "7.00.8882" +CC_VERS_NUM = 70 +!ELSEIF "$(_NMAKE_VER)" == "7.00.9466" +CC_VERS_NUM = 70 +!ELSEIF "$(_NMAKE_VER)" == "7.00.9955" +CC_VERS_NUM = 70 +!ELSEIF "$(_NMAKE_VER)" == "7.10.2240.8" +CC_VERS_NUM = 71 +!ELSEIF "$(_NMAKE_VER)" == "7.10.3077" +CC_VERS_NUM = 71 +!ELSEIF "$(_NMAKE_VER)" == "8.00.40607.16" +CC_VERS_NUM = 80 +!ELSEIF "$(_NMAKE_VER)" == "8.00.50727.42" +CC_VERS_NUM = 80 +!ELSEIF "$(_NMAKE_VER)" == "8.00.50727.762" +CC_VERS_NUM = 80 +!ELSEIF "$(_NMAKE_VER)" == "9.00.20706.01" +CC_VERS_NUM = 90 +!ELSEIF "$(_NMAKE_VER)" == "9.00.21022.08" +CC_VERS_NUM = 90 +!ELSEIF "$(_NMAKE_VER)" == "9.00.30729.01" +CC_VERS_NUM = 90 +!ELSEIF "$(_NMAKE_VER)" == "10.00.20506.01" +CC_VERS_NUM = 100 +!ELSEIF "$(_NMAKE_VER)" == "10.00.21003.01" +CC_VERS_NUM = 100 +!ELSEIF "$(_NMAKE_VER)" == "10.00.30128.01" +CC_VERS_NUM = 100 +!ELSEIF "$(_NMAKE_VER)" == "10.00.30319.01" +CC_VERS_NUM = 100 +!ELSE +! MESSAGE Unknown value for _NMAKE_VER macro: "$(_NMAKE_VER)" +! MESSAGE Please, report this condition on the c-ares development +! MESSAGE mailing list: http://cool.haxx.se/mailman/listinfo/c-ares/ +! ERROR See previous message. +!ENDIF + +CC_VERS_STR = msvc$(CC_VERS_NUM) + +# ---------------------------------------------------- +# Verify that current subdir is the c-ares source one +# ---------------------------------------------------- + +!IF ! EXIST(.\ares_init.c) +! MESSAGE Can not process Makefile.msvc from outside of c-ares source subdirectory. +! MESSAGE Change to the subdirectory where Makefile.msvc is found, and try again. +! ERROR See previous message. +!ENDIF + +# ------------------------------------------------------------------ +# Base subdir is the common root from which other subdirs will hang, +# the name depends on MSVC version being used when building c-ares. +# ------------------------------------------------------------------ + +BASE_DIR = .\$(CC_VERS_STR) + +# ---------------------------------------- +# Subdir holding sources for all projects +# ---------------------------------------- + +SRCDIR = . + +# ----------------------------- +# Default installation subdirs +# ----------------------------- + +!IFNDEF INSTALL_DIR +INSTALL_DIR = . +!ENDIF + +!IFNDEF INSTALL_DIR_LIB +INSTALL_DIR_LIB = $(INSTALL_DIR)\lib +!ENDIF + +!IFNDEF INSTALL_DIR_INC +INSTALL_DIR_INC = $(INSTALL_DIR)\include +!ENDIF + +# ------------------------- +# Configuration validation +# ------------------------- + +VALID_CFGSET = FALSE +!IF "$(CFG)" == "lib-release" || "$(CFG)" == "lib-debug" || \ + "$(CFG)" == "dll-release" || "$(CFG)" == "dll-debug" +VALID_CFGSET = TRUE +!ENDIF + +!IF "$(VALID_CFGSET)" == "FALSE" && "$(CFG)" != "" +! MESSAGE MSVC c-ares makefile +! MESSAGE +! MESSAGE Usage: nmake /f makefile.msvc CFG=<config> <target> +! MESSAGE +! MESSAGE <config> must be one of: [ lib-release | lib-debug | dll-release | dll-debug } +! MESSAGE <target> must be one of: [ ALL | c-ares | acountry | adig | ahost | clean } +! MESSAGE +! MESSAGE If a <target> other than ALL or clean is given, <config> becomes mandatory. +! MESSAGE +! MESSAGE If neither <config> nor <target> are specified this results in +! MESSAGE all targets being built for all <config> c-ares library types. +! MESSAGE +! ERROR Choose a valid configuration. +!ENDIF + +# -------------------------------------------------------- +# Project subdirs independent of configuration being used +# -------------------------------------------------------- + +CARES_DIR = $(BASE_DIR)\cares +PROG1_DIR = $(BASE_DIR)\acountry +PROG2_DIR = $(BASE_DIR)\adig +PROG3_DIR = $(BASE_DIR)\ahost + +# --------------------------------------------------- +# Subdirs which are configuration dependent are only +# defined when a valid configuration has been given. +# --------------------------------------------------- + +!IF "$(VALID_CFGSET)" == "TRUE" +CARES_OUTDIR = $(CARES_DIR)\$(CFG) +PROG1_OUTDIR = $(PROG1_DIR)\$(CFG) +PROG2_OUTDIR = $(PROG2_DIR)\$(CFG) +PROG3_OUTDIR = $(PROG3_DIR)\$(CFG) +CARES_OBJDIR = $(CARES_OUTDIR)\obj +PROG1_OBJDIR = $(PROG1_OUTDIR)\obj +PROG2_OBJDIR = $(PROG2_OUTDIR)\obj +PROG3_OBJDIR = $(PROG3_OUTDIR)\obj +!ELSE +!UNDEF CARES_OUTDIR +!UNDEF PROG1_OUTDIR +!UNDEF PROG2_OUTDIR +!UNDEF PROG3_OUTDIR +!UNDEF CARES_OBJDIR +!UNDEF PROG1_OBJDIR +!UNDEF PROG2_OBJDIR +!UNDEF PROG3_OBJDIR +!ENDIF + +# ------------------------------------- +# Settings that depend on tcp/ip stack +# ------------------------------------- + +!IF "$(USE_WATT32)" == "1" +CFLAGS = /UWIN32 /DWATT32 /I$(WATT_ROOT)\inc +EX_LIBS_REL = $(WATT_ROOT)\lib\wattcpvc_imp.lib +EX_LIBS_DBG = $(WATT_ROOT)\lib\wattcpvc_imp_d.lib +!ELSE +CFLAGS = /DWIN32 +EX_LIBS_REL = ws2_32.lib advapi32.lib kernel32.lib +EX_LIBS_DBG = ws2_32.lib advapi32.lib kernel32.lib +!ENDIF + +# ----------------------------------------- +# Switches that depend on compiler version +# ----------------------------------------- + +!IF $(CC_VERS_NUM) == 60 +PDB_NONE = /pdb:none +PDBTYPE_CONSOLIDATE = /pdbtype:consolidate +!ELSE +!UNDEF PDB_NONE +!UNDEF PDBTYPE_CONSOLIDATE +!ENDIF + +!IF $(CC_VERS_NUM) <= 70 +RT_ERROR_CHECKING = /GZ +!ELSE +RT_ERROR_CHECKING = /RTCsu +!ENDIF + +# ---------------------------- +# Assorted commands and flags +# ---------------------------- + +CC_CMD_REL = cl.exe /nologo $(RTLIB) /DNDEBUG /O2 +CC_CMD_DBG = cl.exe /nologo $(RTLIBD) /D_DEBUG /Od /Zi $(RT_ERROR_CHECKING) +CC_CFLAGS = $(CFLAGS) /I. /W3 /EHsc /FD + +RC_CMD_REL = rc.exe /l 0x409 /d "NDEBUG" +RC_CMD_DBG = rc.exe /l 0x409 /d "_DEBUG" + +LINK_CMD_LIB = link.exe /lib /nologo +LINK_CMD_DLL = link.exe /dll /nologo /incremental:no /fixed:no +LINK_CMD_EXE = link.exe /nologo /incremental:no /fixed:no /subsystem:console + +LINK_CMD_EXE_REL = $(LINK_CMD_EXE) /release $(PDB_NONE) +LINK_CMD_EXE_DBG = $(LINK_CMD_EXE) /debug $(PDBTYPE_CONSOLIDATE) + +# --------------------------------- +# Configuration dependent settings +# --------------------------------- + +!IF "$(CFG)" == "lib-release" +CARES_TARGET = $(STA_LIB_REL).lib +CARES_CFLAGS = /DCARES_BUILDING_LIBRARY /DCARES_STATICLIB +CARES_LFLAGS = +SPROG_CFLAGS = /DCARES_STATICLIB +SPROG_LFLAGS = /libpath:$(CARES_OUTDIR) $(EX_LIBS_REL) $(STA_LIB_REL).lib +CARES_LINK = $(LINK_CMD_LIB) +SPROG_LINK = $(LINK_CMD_EXE_REL) +CC_CMD = $(CC_CMD_REL) +!ENDIF + +!IF "$(CFG)" == "lib-debug" +CARES_TARGET = $(STA_LIB_DBG).lib +CARES_CFLAGS = /DCARES_BUILDING_LIBRARY /DCARES_STATICLIB /DDEBUGBUILD +CARES_LFLAGS = +SPROG_CFLAGS = /DCARES_STATICLIB +SPROG_LFLAGS = /libpath:$(CARES_OUTDIR) $(EX_LIBS_DBG) $(STA_LIB_DBG).lib +CARES_LINK = $(LINK_CMD_LIB) +SPROG_LINK = $(LINK_CMD_EXE_DBG) +CC_CMD = $(CC_CMD_DBG) +!ENDIF + +!IF "$(CFG)" == "dll-release" +CARES_TARGET = $(DYN_LIB_REL).dll +CARES_CFLAGS = /DCARES_BUILDING_LIBRARY +CARES_LFLAGS = /release $(EX_LIBS_REL) /implib:$(CARES_OUTDIR)\$(IMP_LIB_REL).lib $(PDB_NONE) +SPROG_CFLAGS = +SPROG_LFLAGS = /libpath:$(CARES_OUTDIR) $(EX_LIBS_REL) $(IMP_LIB_REL).lib +CARES_LINK = $(LINK_CMD_DLL) +SPROG_LINK = $(LINK_CMD_EXE_REL) +CC_CMD = $(CC_CMD_REL) +USE_RES_FILE = TRUE +RC_CMD = $(RC_CMD_REL) +!ENDIF + +!IF "$(CFG)" == "dll-debug" +CARES_TARGET = $(DYN_LIB_DBG).dll +CARES_CFLAGS = /DCARES_BUILDING_LIBRARY /DDEBUGBUILD +CARES_LFLAGS = /debug $(EX_LIBS_DBG) /implib:$(CARES_OUTDIR)\$(IMP_LIB_DBG).lib /pdb:$(CARES_OUTDIR)\$(DYN_LIB_DBG).pdb $(PDBTYPE_CONSOLIDATE) +SPROG_CFLAGS = +SPROG_LFLAGS = /libpath:$(CARES_OUTDIR) $(EX_LIBS_DBG) $(IMP_LIB_DBG).lib +CARES_LINK = $(LINK_CMD_DLL) +SPROG_LINK = $(LINK_CMD_EXE_DBG) +CC_CMD = $(CC_CMD_DBG) +USE_RES_FILE = TRUE +RC_CMD = $(RC_CMD_DBG) +!ENDIF + +# -------------------------------------------- +# Makefile.inc provides lists of source files +# -------------------------------------------- + +!INCLUDE .\Makefile.inc + +# ---------------------------- +# Build lists of object files +# ---------------------------- + +!IF "$(VALID_CFGSET)" == "TRUE" + +!IF [ECHO CARES_OBJS=^$(CARES_OBJDIR)\$(CSOURCES: = $(CARES_OBJDIR^)\) > .\cares_objs.inc] == 0 +!INCLUDE .\cares_objs.inc +!IF [DEL .\cares_objs.inc] +!ENDIF +!ELSE +!ERROR Problem generating CARES_OBJS list. +!ENDIF +CARES_OBJS = $(CARES_OBJS:.c=.obj) +!IF "$(USE_RES_FILE)" == "TRUE" +CARES_OBJS = $(CARES_OBJS) $(CARES_OBJDIR)\cares.res +!ENDIF + +!IF [ECHO PROG1_OBJS=^$(PROG1_OBJDIR)\$(SAMPLESOURCES: = $(PROG1_OBJDIR^)\) > .\prog1_objs.inc] == 0 +!INCLUDE .\prog1_objs.inc +!IF [DEL .\prog1_objs.inc] +!ENDIF +!ELSE +!ERROR Problem generating PROG1_OBJS list. +!ENDIF +PROG1_OBJS = $(PROG1_OBJS:.c=.obj) +PROG1_OBJS = $(PROG1_OBJS) $(PROG1_OBJDIR)\acountry.obj + +!IF [ECHO PROG2_OBJS=^$(PROG2_OBJDIR)\$(SAMPLESOURCES: = $(PROG2_OBJDIR^)\) > .\prog2_objs.inc] == 0 +!INCLUDE .\prog2_objs.inc +!IF [DEL .\prog2_objs.inc] +!ENDIF +!ELSE +!ERROR Problem generating PROG2_OBJS list. +!ENDIF +PROG2_OBJS = $(PROG2_OBJS:.c=.obj) +PROG2_OBJS = $(PROG2_OBJS) $(PROG2_OBJDIR)\adig.obj + +!IF [ECHO PROG3_OBJS=^$(PROG3_OBJDIR)\$(SAMPLESOURCES: = $(PROG3_OBJDIR^)\) > .\prog3_objs.inc] == 0 +!INCLUDE .\prog3_objs.inc +!IF [DEL .\prog3_objs.inc] +!ENDIF +!ELSE +!ERROR Problem generating PROG3_OBJS list. +!ENDIF +PROG3_OBJS = $(PROG3_OBJS:.c=.obj) +PROG3_OBJS = $(PROG3_OBJS) $(PROG3_OBJDIR)\ahost.obj + +!ENDIF + +# -------------------------------- +# Only our custom inference rules +# -------------------------------- + +.SUFFIXES: +.SUFFIXES: .c .rc + +{$(SRCDIR)}.rc{$(CARES_OBJDIR)}.res: + $(RC_CMD) /Fo $@ $< + +{$(SRCDIR)}.c{$(CARES_OBJDIR)}.obj: + $(CC_CMD) $(CC_CFLAGS) $(CARES_CFLAGS) /Fo$@ /Fd$(@D)\ /c $< + +{$(SRCDIR)}.c{$(PROG1_OBJDIR)}.obj: + $(CC_CMD) $(CC_CFLAGS) $(SPROG_CFLAGS) /Fo$@ /Fd$(@D)\ /c $< + +{$(SRCDIR)}.c{$(PROG2_OBJDIR)}.obj: + $(CC_CMD) $(CC_CFLAGS) $(SPROG_CFLAGS) /Fo$@ /Fd$(@D)\ /c $< + +{$(SRCDIR)}.c{$(PROG3_OBJDIR)}.obj: + $(CC_CMD) $(CC_CFLAGS) $(SPROG_CFLAGS) /Fo$@ /Fd$(@D)\ /c $< + +# ------------------------------------------------------------- # +# ------------------------------------------------------------- # +# Default target when no CFG library type has been specified, # +# results in building target ALL for all c-ares library types. # +# ------------------------------------------------------------- # +# ------------------------------------------------------------- # + +!IF "$(VALID_CFGSET)" == "FALSE" + +ALL: + $(MAKE) /f .\Makefile.msvc CFG=lib-release ALL + $(MAKE) /f .\Makefile.msvc CFG=lib-debug ALL + $(MAKE) /f .\Makefile.msvc CFG=dll-release ALL + $(MAKE) /f .\Makefile.msvc CFG=dll-debug ALL + +clean: + @-RMDIR /S /Q $(BASE_DIR) >NUL 2>&1 + +install: + @$(MAKE) /nologo /f .\Makefile.msvc CFG=lib-release install + @$(MAKE) /nologo /f .\Makefile.msvc CFG=lib-debug install + @$(MAKE) /nologo /f .\Makefile.msvc CFG=dll-release install + @$(MAKE) /nologo /f .\Makefile.msvc CFG=dll-debug install + +!ENDIF + +# --------------------------------------------------------------------- +# Targets only available when a proper CFG library type has been given +# --------------------------------------------------------------------- + +!IF "$(VALID_CFGSET)" == "TRUE" + +ALL: c-ares acountry adig ahost + @ + +c-ares: $(HHEADERS) $(CSOURCES) $(CARES_OBJDIR) $(CARES_OBJS) $(CARES_OUTDIR) + $(CARES_LINK) $(CARES_LFLAGS) /out:$(CARES_OUTDIR)\$(CARES_TARGET) $(CARES_OBJS) +! IF "$(USE_RES_FILE)" == "TRUE" + @if exist $(CARES_OUTDIR)\$(CARES_TARGET).manifest mt -nologo -manifest $(CARES_OUTDIR)\$(CARES_TARGET).manifest -outputresource:$(CARES_OUTDIR)\$(CARES_TARGET);2 +! ENDIF + +acountry: c-ares acountry.c $(SAMPLESOURCES) $(SAMPLEHEADERS) $(PROG1_OBJDIR) $(PROG1_OBJS) $(PROG1_OUTDIR) + $(SPROG_LINK) $(SPROG_LFLAGS) /out:$(PROG1_OUTDIR)\acountry.exe $(PROG1_OBJS) + @if exist $(PROG1_OUTDIR)\acountry.exe.manifest mt -nologo -manifest $(PROG1_OUTDIR)\acountry.exe.manifest -outputresource:$(PROG1_OUTDIR)\acountry.exe;1 + +adig: c-ares adig.c $(SAMPLESOURCES) $(SAMPLEHEADERS) $(PROG2_OBJDIR) $(PROG2_OBJS) $(PROG2_OUTDIR) + $(SPROG_LINK) $(SPROG_LFLAGS) /out:$(PROG2_OUTDIR)\adig.exe $(PROG2_OBJS) + @if exist $(PROG2_OUTDIR)\adig.exe.manifest mt -nologo -manifest $(PROG2_OUTDIR)\adig.exe.manifest -outputresource:$(PROG2_OUTDIR)\adig.exe;1 + +ahost: c-ares ahost.c $(SAMPLESOURCES) $(SAMPLEHEADERS) $(PROG3_OBJDIR) $(PROG3_OBJS) $(PROG3_OUTDIR) + $(SPROG_LINK) $(SPROG_LFLAGS) /out:$(PROG3_OUTDIR)\ahost.exe $(PROG3_OBJS) + @if exist $(PROG3_OUTDIR)\ahost.exe.manifest mt -nologo -manifest $(PROG3_OUTDIR)\ahost.exe.manifest -outputresource:$(PROG3_OUTDIR)\ahost.exe;1 + +$(CARES_OUTDIR): $(CARES_DIR) + @if not exist $(CARES_OUTDIR) mkdir $(CARES_OUTDIR) + +$(PROG1_OUTDIR): $(PROG1_DIR) + @if not exist $(PROG1_OUTDIR) mkdir $(PROG1_OUTDIR) + +$(PROG2_OUTDIR): $(PROG2_DIR) + @if not exist $(PROG2_OUTDIR) mkdir $(PROG2_OUTDIR) + +$(PROG3_OUTDIR): $(PROG3_DIR) + @if not exist $(PROG3_OUTDIR) mkdir $(PROG3_OUTDIR) + +$(CARES_OBJDIR): $(CARES_OUTDIR) + @if not exist $(CARES_OBJDIR) mkdir $(CARES_OBJDIR) + +$(PROG1_OBJDIR): $(PROG1_OUTDIR) + @if not exist $(PROG1_OBJDIR) mkdir $(PROG1_OBJDIR) + +$(PROG2_OBJDIR): $(PROG2_OUTDIR) + @if not exist $(PROG2_OBJDIR) mkdir $(PROG2_OBJDIR) + +$(PROG3_OBJDIR): $(PROG3_OUTDIR) + @if not exist $(PROG3_OBJDIR) mkdir $(PROG3_OBJDIR) + +clean: + @-RMDIR /S /Q $(CARES_OUTDIR) >NUL 2>&1 + @-RMDIR /S /Q $(PROG1_OUTDIR) >NUL 2>&1 + @-RMDIR /S /Q $(PROG2_OUTDIR) >NUL 2>&1 + @-RMDIR /S /Q $(PROG3_OUTDIR) >NUL 2>&1 + +install: + @if not exist $(CARES_OUTDIR)\$(CARES_TARGET) \ + $(MAKE) /f .\Makefile.msvc CFG=$(CFG) c-ares + @if not exist "$(INSTALL_DIR)" mkdir "$(INSTALL_DIR)" + @if not exist "$(INSTALL_DIR_LIB)" mkdir "$(INSTALL_DIR_LIB)" + @if not exist "$(INSTALL_DIR_INC)" mkdir "$(INSTALL_DIR_INC)" + @copy /y $(CARES_OUTDIR)\*.* "$(INSTALL_DIR_LIB)" >NUL + @copy /y $(SRCDIR)\ares.h "$(INSTALL_DIR_INC)" >NUL + @copy /y $(SRCDIR)\ares_build.h "$(INSTALL_DIR_INC)" >NUL + @copy /y $(SRCDIR)\ares_rules.h "$(INSTALL_DIR_INC)" >NUL + @copy /y $(SRCDIR)\ares_version.h "$(INSTALL_DIR_INC)" >NUL + @echo Installed c-ares $(CFG) + +!ENDIF + +$(BASE_DIR): + @if not exist $(BASE_DIR) mkdir $(BASE_DIR) + +$(CARES_DIR): $(BASE_DIR) + @if not exist $(CARES_DIR) mkdir $(CARES_DIR) + +$(PROG1_DIR): $(BASE_DIR) + @if not exist $(PROG1_DIR) mkdir $(PROG1_DIR) + +$(PROG2_DIR): $(BASE_DIR) + @if not exist $(PROG2_DIR) mkdir $(PROG2_DIR) + +$(PROG3_DIR): $(BASE_DIR) + @if not exist $(PROG3_DIR) mkdir $(PROG3_DIR) + +# End of Makefile.msvc diff --git a/Makefile.netware b/Makefile.netware new file mode 100644 index 0000000..0cb1530 --- /dev/null +++ b/Makefile.netware @@ -0,0 +1,440 @@ +################################################################# +# +## Makefile for building libcares (NetWare version - gnu make) +## Use: make -f Makefile.netware +## +## Comments to: Guenter Knauf http://www.gknw.de/phpbb +# +################################################################# + +# Edit the path below to point to the base of your Novell NDK. +ifndef NDKBASE +NDKBASE = c:/novell +endif + +ifndef INSTDIR +INSTDIR = ../ares-$(LIBCARES_VERSION_STR)-bin-nw +endif + +# Edit the vars below to change NLM target settings. +TARGETS = adig.nlm ahost.nlm acountry.nlm +LTARGET = libcares.$(LIBEXT) +VERSION = $(LIBCARES_VERSION) +COPYR = $(LIBCARES_COPYRIGHT_STR) +DESCR = cURL $(subst .def,,$(notdir $@)) $(LIBCARES_VERSION_STR) - http://curl.haxx.se +MTSAFE = YES +STACK = 64000 +SCREEN = none +#EXPORTS = +# Comment the line below if you dont want to load protected automatically. +#LDRING = 3 + +# Edit the var below to point to your lib architecture. +ifndef LIBARCH +LIBARCH = LIBC +endif + +# must be equal to NDEBUG or DEBUG, CURLDEBUG +ifndef DB +DB = NDEBUG +endif +# Optimization: -O<n> or debugging: -g +ifeq ($(DB),NDEBUG) + OPT = -O2 + OBJDIR = release +else + OPT = -g + OBJDIR = debug +endif + +# Include the version info retrieved from curlver.h +-include $(OBJDIR)/version.inc + +# The following lines defines your compiler. +ifdef CWFolder + METROWERKS = $(CWFolder) +endif +ifdef METROWERKS + # MWCW_PATH = $(subst \,/,$(METROWERKS))/Novell Support + MWCW_PATH = $(subst \,/,$(METROWERKS))/Novell Support/Metrowerks Support + CC = mwccnlm +else + CC = gcc +endif +# a native win32 awk can be downloaded from here: +# http://www.gknw.net/development/prgtools/awk-20070501.zip +AWK = awk +YACC = bison -y +CP = cp -afv +MKDIR = mkdir +# RM = rm -f +# if you want to mark the target as MTSAFE you will need a tool for +# generating the xdc data for the linker; here's a minimal tool: +# http://www.gknw.net/development/prgtools/mkxdc.zip +MPKXDC = mkxdc + +# Global flags for all compilers +CFLAGS += $(OPT) -D$(DB) -DNETWARE -DHAVE_CONFIG_H -nostdinc + +ifeq ($(CC),mwccnlm) +LD = mwldnlm +LDFLAGS = -nostdlib $(PRELUDE) $(OBJEXE) $(<:.def=.o) -o $@ -commandfile +AR = mwldnlm +ARFLAGS = -nostdlib -type library -o +LIBEXT = lib +#RANLIB = +CFLAGS += -msgstyle gcc -gccinc -inline off -opt nointrinsics -proc 586 +CFLAGS += -relax_pointers +#CFLAGS += -w on +ifeq ($(LIBARCH),LIBC) + PRELUDE = $(SDK_LIBC)/imports/libcpre.o + CFLAGS += -align 4 +else + # PRELUDE = $(SDK_CLIB)/imports/clibpre.o + # to avoid the __init_* / __deinit_* whoes dont use prelude from NDK + PRELUDE = "$(MWCW_PATH)/libraries/runtime/prelude.obj" + # CFLAGS += -include "$(MWCW_PATH)/headers/nlm_clib_prefix.h" + CFLAGS += -align 1 +endif +else +LD = nlmconv +LDFLAGS = -T +AR = ar +ARFLAGS = -cq +LIBEXT = a +RANLIB = ranlib +CFLAGS += -m32 +CFLAGS += -fno-builtin -fno-strict-aliasing +ifeq ($(findstring gcc,$(CC)),gcc) +CFLAGS += -fpcc-struct-return +endif +CFLAGS += -Wall # -pedantic +ifeq ($(LIBARCH),LIBC) + PRELUDE = $(SDK_LIBC)/imports/libcpre.gcc.o +else + # PRELUDE = $(SDK_CLIB)/imports/clibpre.gcc.o + # to avoid the __init_* / __deinit_* whoes dont use prelude from NDK + # http://www.gknw.net/development/mk_nlm/gcc_pre.zip + PRELUDE = $(NDK_ROOT)/pre/prelude.o + CFLAGS += -include $(NDKBASE)/nlmconv/genlm.h +endif +endif + +NDK_ROOT = $(NDKBASE)/ndk +SDK_CLIB = $(NDK_ROOT)/nwsdk +SDK_LIBC = $(NDK_ROOT)/libc + +ifeq ($(LIBARCH),LIBC) + INCLUDES += -I$(SDK_LIBC)/include + # INCLUDES += -I$(SDK_LIBC)/include/nks + # INCLUDES += -I$(SDK_LIBC)/include/winsock + CFLAGS += -D_POSIX_SOURCE +else + INCLUDES += -I$(SDK_CLIB)/include/nlm + # INCLUDES += -I$(SDK_CLIB)/include/nlm/obsolete + # INCLUDES += -I$(SDK_CLIB)/include +endif +ifeq ($(DB),CURLDEBUG) +INCLUDES += -I../include +endif +CFLAGS += -I. $(INCLUDES) + +ifeq ($(MTSAFE),YES) + XDCOPT = -n +endif +ifeq ($(MTSAFE),NO) + XDCOPT = -u +endif + +ifeq ($(findstring /sh,$(SHELL)),/sh) +DL = ' +#-include $(NDKBASE)/nlmconv/ncpfs.inc +endif + +# Makefile.inc provides the CSOURCES and HHEADERS defines +include Makefile.inc + +OBJLIB := $(patsubst %.c,$(OBJDIR)/%.o,$(strip $(CSOURCES))) +OBJEXE = $(OBJLIB) $(OBJDIR)/ares_getopt.o + +.PHONY: lib nlm prebuild dist install clean + +lib: prebuild $(LTARGET) + +nlm: prebuild $(TARGETS) + +prebuild: $(OBJDIR) ares_build.h $(OBJDIR)/version.inc ares_config.h + +install: $(INSTDIR) all + @$(CP) *.nlm $(INSTDIR) + @$(CP) ../CHANGES $(INSTDIR) + @$(CP) ../COPYING $(INSTDIR) + @$(CP) ../README $(INSTDIR) + @$(CP) ../RELEASE-NOTES $(INSTDIR) + +clean: + -$(RM) $(LTARGET) $(TARGETS) ares_config.h + -$(RM) -r $(OBJDIR) + -$(RM) -r arpa + +%.$(LIBEXT): $(OBJLIB) + @echo Creating $@ + @-$(RM) $@ + @$(AR) $(ARFLAGS) $@ $^ +ifdef RANLIB + @$(RANLIB) $@ +endif + +%.nlm: $(OBJDIR)/%.def $(OBJDIR)/%.o $(OBJDIR)/%.xdc $(OBJEXE) + @echo Linking $@ + @-$(RM) $@ + @$(LD) $(LDFLAGS) $< + +$(OBJDIR) $(INSTDIR): + @$(MKDIR) $@ + +$(OBJDIR)/%.o: %.c +# @echo Compiling $< + $(CC) $(CFLAGS) -c $< -o $@ + +$(OBJDIR)/version.inc: ares_version.h $(OBJDIR) + @echo Creating $@ + @$(AWK) -f get_ver.awk $< > $@ + +$(OBJDIR)/%.xdc: Makefile.netware + @echo Creating $@ + @$(MPKXDC) $(XDCOPT) $@ + +$(OBJDIR)/%.def: Makefile.netware + @echo Creating $@ + @echo $(DL)# DEF file for linking with $(LD)$(DL) > $@ + @echo $(DL)# Do not edit this file - it is created by make!$(DL) >> $@ + @echo $(DL)# All your changes will be lost!!$(DL) >> $@ + @echo $(DL)#$(DL) >> $@ + @echo $(DL)copyright "$(COPYR)"$(DL) >> $@ + @echo $(DL)description "$(DESCR)"$(DL) >> $@ + @echo $(DL)version $(VERSION)$(DL) >> $@ +ifdef NLMTYPE + @echo $(DL)type $(NLMTYPE)$(DL) >> $@ +endif +ifdef STACK + @echo $(DL)stack $(STACK)$(DL) >> $@ +endif +ifdef SCREEN + @echo $(DL)screenname "$(SCREEN)"$(DL) >> $@ +else + @echo $(DL)screenname "DEFAULT"$(DL) >> $@ +endif +ifeq ($(DB),DEBUG) + @echo $(DL)debug$(DL) >> $@ +endif + @echo $(DL)threadname "$^"$(DL) >> $@ +ifdef XDCOPT + @echo $(DL)xdcdata $(@:.def=.xdc)$(DL) >> $@ +endif +ifeq ($(LDRING),0) + @echo $(DL)flag_on 16$(DL) >> $@ +endif +ifeq ($(LDRING),3) + @echo $(DL)flag_on 512$(DL) >> $@ +endif +ifeq ($(LIBARCH),CLIB) + @echo $(DL)start _Prelude$(DL) >> $@ + @echo $(DL)exit _Stop$(DL) >> $@ + @echo $(DL)import @$(SDK_CLIB)/imports/clib.imp$(DL) >> $@ + @echo $(DL)import @$(SDK_CLIB)/imports/threads.imp$(DL) >> $@ + @echo $(DL)import @$(SDK_CLIB)/imports/nlmlib.imp$(DL) >> $@ + @echo $(DL)import @$(SDK_CLIB)/imports/socklib.imp$(DL) >> $@ + @echo $(DL)module clib$(DL) >> $@ +else + @echo $(DL)flag_on 64$(DL) >> $@ + @echo $(DL)pseudopreemption$(DL) >> $@ + @echo $(DL)start _LibCPrelude$(DL) >> $@ + @echo $(DL)exit _LibCPostlude$(DL) >> $@ + @echo $(DL)check _LibCCheckUnload$(DL) >> $@ + @echo $(DL)import @$(SDK_LIBC)/imports/libc.imp$(DL) >> $@ + @echo $(DL)import @$(SDK_LIBC)/imports/netware.imp$(DL) >> $@ + @echo $(DL)module libc$(DL) >> $@ +endif +ifdef MODULES + @echo $(DL)module $(MODULES)$(DL) >> $@ +endif +ifdef EXPORTS + @echo $(DL)export $(EXPORTS)$(DL) >> $@ +endif +ifdef IMPORTS + @echo $(DL)import $(IMPORTS)$(DL) >> $@ +endif +ifeq ($(LD),nlmconv) + @echo $(DL)input $(PRELUDE)$(DL) >> $@ + @echo $(DL)input $(OBJEXE)$(DL) >> $@ + @echo $(DL)input $(@:.def=.o)$(DL) >> $@ + @echo $(DL)output $(notdir $(@:.def=.nlm))$(DL) >> $@ +endif + +ares_config.h: Makefile.netware + @echo Creating $@ + @echo $(DL)/* $@ for NetWare target.$(DL) > $@ + @echo $(DL)** Do not edit this file - it is created by make!$(DL) >> $@ + @echo $(DL)** All your changes will be lost!!$(DL) >> $@ + @echo $(DL)*/$(DL) >> $@ + @echo $(DL)#ifndef NETWARE$(DL) >> $@ + @echo $(DL)#error This $(notdir $@) is created for NetWare platform!$(DL) >> $@ + @echo $(DL)#endif$(DL) >> $@ + @echo $(DL)#define VERSION "$(LIBCARES_VERSION_STR)"$(DL) >> $@ + @echo $(DL)#define PACKAGE_BUGREPORT "a suitable curl mailing list => http://curl.haxx.se/mail/"$(DL) >> $@ +ifeq ($(LIBARCH),CLIB) + @echo $(DL)#define OS "i586-pc-clib-NetWare"$(DL) >> $@ + @echo $(DL)#define HAVE_STRICMP 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRNICMP 1$(DL) >> $@ + @echo $(DL)#define NETDB_USE_INTERNET 1$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG1 int$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG2 char *$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG3 int$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG4 int$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_RETV int$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG1 int$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG2 char$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG3 int$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG4 int$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG5 struct sockaddr$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG6 int$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_RETV int$(DL) >> $@ + @echo $(DL)#define SEND_QUAL_ARG2$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG1 int$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG2 char *$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG3 int$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG4 int$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_RETV int$(DL) >> $@ + @echo $(DL)#define SIZEOF_SIZE_T 4$(DL) >> $@ +else + @echo $(DL)#define OS "i586-pc-libc-NetWare"$(DL) >> $@ + @echo $(DL)#define HAVE_DLFCN_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_DLOPEN 1$(DL) >> $@ + @echo $(DL)#define HAVE_FTRUNCATE 1$(DL) >> $@ + @echo $(DL)#define HAVE_GETTIMEOFDAY 1$(DL) >> $@ + @echo $(DL)#define HAVE_INTTYPES_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_LONGLONG 1$(DL) >> $@ + @echo $(DL)#define HAVE_STDINT_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRCASECMP 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRLCAT 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRLCPY 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRTOLL 1$(DL) >> $@ + @echo $(DL)#define HAVE_SYS_PARAM_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_SYS_SELECT_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_TERMIOS_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_AF_INET6 1$(DL) >> $@ + @echo $(DL)#define HAVE_PF_INET6 1$(DL) >> $@ + @echo $(DL)#define HAVE_FREEADDRINFO 1$(DL) >> $@ + @echo $(DL)#define HAVE_GETADDRINFO 1$(DL) >> $@ + @echo $(DL)#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRUCT_IN6_ADDR 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRUCT_SOCKADDR_IN6 1$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG1 int$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG2 void *$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG3 size_t$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG4 int$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_RETV ssize_t$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG1 int$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG2 void$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG3 size_t$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG4 int$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG5 struct sockaddr$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG6 size_t$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_RETV ssize_t$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG2_IS_VOID 1$(DL) >> $@ + @echo $(DL)#define SEND_QUAL_ARG2$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG1 int$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG2 void *$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG3 size_t$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG4 int$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_RETV ssize_t$(DL) >> $@ + @echo $(DL)#define SIZEOF_SIZE_T 8$(DL) >> $@ + @echo $(DL)#define SIZEOF_STRUCT_IN6_ADDR 16$(DL) >> $@ +endif + @echo $(DL)#define HAVE_ARPA_INET_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_ASSERT_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_ERRNO_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_ERR_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_FCNTL_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_GETENV 1$(DL) >> $@ + @echo $(DL)#define HAVE_GETHOSTBYADDR 1$(DL) >> $@ + @echo $(DL)#define HAVE_GETHOSTBYNAME 1$(DL) >> $@ + @echo $(DL)#define HAVE_GETHOSTNAME 1$(DL) >> $@ + @echo $(DL)#define HAVE_GETPROTOBYNAME 1$(DL) >> $@ + @echo $(DL)#define HAVE_GMTIME_R 1$(DL) >> $@ + @echo $(DL)#define HAVE_INET_ADDR 1$(DL) >> $@ + @echo $(DL)#define HAVE_IOCTL 1$(DL) >> $@ + @echo $(DL)#define HAVE_IOCTL_FIONBIO 1$(DL) >> $@ + @echo $(DL)#define HAVE_LIMITS_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_LL 1$(DL) >> $@ + @echo $(DL)#define HAVE_LOCALTIME_R 1$(DL) >> $@ + @echo $(DL)#define HAVE_MALLOC_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_NETINET_IN_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_RECV 1$(DL) >> $@ + @echo $(DL)#define HAVE_RECVFROM 1$(DL) >> $@ + @echo $(DL)#define HAVE_SELECT 1$(DL) >> $@ + @echo $(DL)#define HAVE_SEND 1$(DL) >> $@ + @echo $(DL)#define HAVE_SETJMP_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_SIGNAL 1$(DL) >> $@ + @echo $(DL)#define HAVE_SIGNAL_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_SIG_ATOMIC_T 1$(DL) >> $@ + @echo $(DL)#define HAVE_SOCKET 1$(DL) >> $@ + @echo $(DL)#define HAVE_STDLIB_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRDUP 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRFTIME 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRING_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRSTR 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRUCT_ADDRINFO 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRUCT_TIMEVAL 1$(DL) >> $@ + @echo $(DL)#define HAVE_SYS_IOCTL_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_SYS_STAT_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_SYS_TIME_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_TIME_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_UNAME 1$(DL) >> $@ + @echo $(DL)#define HAVE_UNISTD_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_UTIME 1$(DL) >> $@ + @echo $(DL)#define HAVE_UTIME_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_WRITEV 1$(DL) >> $@ + @echo $(DL)#define RETSIGTYPE void$(DL) >> $@ + @echo $(DL)#define SIZEOF_INT 4$(DL) >> $@ + @echo $(DL)#define SIZEOF_STRUCT_IN_ADDR 4$(DL) >> $@ + @echo $(DL)#define STDC_HEADERS 1$(DL) >> $@ + @echo $(DL)#define TIME_WITH_SYS_TIME 1$(DL) >> $@ +ifdef NW_WINSOCK + @echo $(DL)#define HAVE_CLOSESOCKET 1$(DL) >> $@ +else + @echo $(DL)#define HAVE_SYS_TYPES_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_SYS_SOCKET_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_SYS_SOCKIO_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_NETDB_H 1$(DL) >> $@ +endif + @echo $(DL)#ifdef __GNUC__$(DL) >> $@ + @echo $(DL)#define HAVE_VARIADIC_MACROS_GCC 1$(DL) >> $@ + @echo $(DL)#else$(DL) >> $@ + @echo $(DL)#define HAVE_VARIADIC_MACROS_C99 1$(DL) >> $@ + @echo $(DL)#endif$(DL) >> $@ + +FORCE: ; + +ares_build.h: Makefile.netware FORCE + @echo Creating $@ + @echo $(DL)/* $@ intended for NetWare target.$(DL) > $@ + @echo $(DL)** Do not edit this file - it is created by make!$(DL) >> $@ + @echo $(DL)** All your changes will be lost!!$(DL) >> $@ + @echo $(DL)*/$(DL) >> $@ + @echo $(DL)#ifndef NETWARE$(DL) >> $@ + @echo $(DL)#error This $(notdir $@) is created for NetWare platform!$(DL) >> $@ + @echo $(DL)#endif$(DL) >> $@ + @echo $(DL)#ifndef __CARES_BUILD_H$(DL) >> $@ + @echo $(DL)#define __CARES_BUILD_H$(DL) >> $@ +ifeq ($(LIBARCH),CLIB) + @echo $(DL)#define CARES_TYPEOF_ARES_SOCKLEN_T int$(DL) >> $@ + @echo $(DL)#define CARES_SIZEOF_ARES_SOCKLEN_T 4$(DL) >> $@ +else + @echo $(DL)#define CARES_TYPEOF_ARES_SOCKLEN_T unsigned int$(DL) >> $@ + @echo $(DL)#define CARES_SIZEOF_ARES_SOCKLEN_T 4$(DL) >> $@ +endif + @echo $(DL)#define CARES_SIZEOF_LONG 4$(DL) >> $@ + @echo $(DL)typedef CARES_TYPEOF_ARES_SOCKLEN_T ares_socklen_t;$(DL) >> $@ + @echo $(DL)#endif /* __CARES_BUILD_H */$(DL) >> $@ @@ -0,0 +1,21 @@ +Major changes since: +* see the CHANGES file + +Major changes in release 1.1.1: +* ares should now compile as C++ code (no longer uses reserved word + "class"). +* Added SRV support to adig test program. +* Fixed a few error handling bugs in query processing. + +Major changes in release 1.1.0: +* Added ares_free_string() function so that memory can be freed in the + same layer as it is allocated, a desirable feature in some + environments. +* A few of the ares_dns.h macros are fixed to use the proper bitwise + operator. +* Fixed a couple of fenceposts fixed in ares_expand_name()'s + bounds-checking. +* In process_timeouts(), extract query->next before calling + next_server() and possibly freeing the query structure. +* Casted arguments to ctype macros casted to unsigned char, since not + all char values are valid inputs to those macros according to ANSI. @@ -0,0 +1,60 @@ +c-ares +====== + +This is c-ares, an asynchronous resolver library. It is intended for +applications which need to perform DNS queries without blocking, or need to +perform multiple DNS queries in parallel. The primary examples of such +applications are servers which communicate with multiple clients and programs +with graphical user interfaces. + +The full source code is available in the 'c-ares' release archives, and in a +git repository: http://github.com/bagder/c-ares + +If you find bugs, correct flaws, have questions or have comments in general in +regard to c-ares (or by all means the original ares too), get in touch with us +on the c-ares mailing list: http://cool.haxx.se/mailman/listinfo/c-ares + +c-ares is of course distributed under the same MIT-style license as the +original ares. + +You'll find all c-ares details and news here: + + http://c-ares.haxx.se/ + + +NOTES FOR C-ARES HACKERS + +The following notes apply to c-ares version 1.7.0 and later. + +* The distributed ares_build.h file is only intended to be used on systems + which can not run the also distributed configure script. + +* The distributed ares_build.h file is generated as a copy of ares_build.h.dist + when the c-ares source code distribution archive file is originally created. + +* If you check out from git on a non-configure platform, you must run the + appropriate buildconf* script to set up ares_build.h and other local files + before being able of compiling the library. + +* On systems capable of running the configure script, the configure process + will overwrite the distributed ares_build.h file with one that is suitable + and specific to the library being configured and built, this new file is + generated from the ares_build.h.in template file. + +* If you intend to distribute an already compiled c-ares library you _MUST_ + also distribute along with it the generated ares_build.h which has been + used to compile it. Otherwise the library will be of no use for the users of + the library that you have built. It is _your_ responsibility to provide this + file. No one at the c-ares project can know how you have built the library. + +* File ares_build.h includes platform and configuration dependent info, + and must not be modified by anyone. Configure script generates it for you. + +* We cannot assume anything else but very basic compiler features being + present. While c-ares requires an ANSI C compiler to build, some of the + earlier ANSI compilers clearly can't deal with some preprocessor operators. + +* Newlines must remain unix-style for older compilers' sake. + +* Comments must be written in the old-style /* unnested C-fashion */ + diff --git a/README.cares b/README.cares new file mode 100644 index 0000000..aca54c8 --- /dev/null +++ b/README.cares @@ -0,0 +1,13 @@ +c-ares +====== + +This package is based on ares 1.1.1 (written by Greg Hudson). I decided to +fork and release a separate project since the ares author didn't want the +improvements that were vital for our use of it. + +This package is dubbed 'c-ares' since I (Daniel Stenberg) wanted this for use +within the curl project (hence the letter C) and it makes a nice pun. Also, +c-ares is not API compatible with ares: a new name makes that more obvious to +the public. + +The original libares was distributed at athena-dist.mit.edu:pub/ATHENA/ares. diff --git a/README.msvc b/README.msvc new file mode 100644 index 0000000..4ff8700 --- /dev/null +++ b/README.msvc @@ -0,0 +1,142 @@ + + + ___ __ _ _ __ ___ ___ + / __| ___ / _` | '__/ _ \/ __| + | (_ |___| (_| | | | __/\__ \ + \___| \__,_|_| \___||___/ + + + How to build c-ares using MSVC or Visual Studio + ================================================= + + + + How to build using MSVC from the command line + --------------------------------------------- + + Open a command prompt window and ensure that the environment is properly + set up in order to use MSVC or Visual Studio compiler tools. + + Change to c-ares source folder where Makefile.msvc file is located and run: + + > nmake -f Makefile.msvc + + This will build all c-ares libraries as well as three sample programs. + + Once the above command has finished a new folder named MSVCXX will exist + below the folder where makefile.msvc is found. The name of the folder + depends on the MSVC compiler version being used to build c-ares. + + Below the MSVCXX folder there will exist four folders named 'cares', + 'ahost', 'acountry', and 'adig'. The 'cares' folder is the one that + holds the c-ares libraries you have just generated, the other three + hold sample programs that use the libraries. + + The above command builds four versions of the c-ares library, dynamic + and static versions and each one in release and debug flavours. Each + of these is found in folders named dll-release, dll-debug, lib-release, + and lib-debug, which hang from the 'cares' folder mentioned above. Each + sample program also has folders with the same names to reflect which + library version it is using. + + + How to install using MSVC from the command line + ----------------------------------------------- + + In order to allow easy usage of c-ares libraries it may be convenient to + install c-ares libraries and header files to a common subdirectory tree. + + Once that c-ares libraries have been built using procedure described above, + use same command prompt window to define environment variable INSTALL_DIR + to designate the top subdirectory where installation of c-ares libraries and + header files will be done. + + > set INSTALL_DIR=c:\c-ares + + Afterwards, run following command to actually perform the installation: + + > nmake -f Makefile.msvc install + + Installation procedure will copy c-ares libraries to subdirectory 'lib' and + c-ares header files to subdirectory 'include' below the INSTALL_DIR subdir. + + When environment variable INSTALL_DIR is not defined, installation is done + to c-ares source folder where Makefile.msvc file is located. + + + How to build using Visual Studio 6 IDE + -------------------------------------- + + A VC++ 6.0 reference workspace (vc6aws.dsw) is available within the 'vc' + folder to allow proper building of the library and sample programs. + + 1) Open the vc6aws.dsw workspace with MSVC6's IDE. + 2) Select 'Build' from top menu. + 3) Select 'Batch Build' from dropdown menu. + 4) Make sure that the sixteen project configurations are 'checked'. + 5) Click on the 'Build' button. + 6) Once the sixteen project configurations are built you are done. + + Dynamic and static c-ares libraries are built in debug and release flavours, + and can be located each one in its own subdirectory, dll-debug, dll-release, + lib-debug and lib-release, all of them below the 'vc\cares' subdirectory. + + In the same way four executable versions of each sample program are built, + each using its respective library. The resulting sample executables are + located in its own subdirectory, dll-debug, dll-release, lib-debug and + lib-release, below the 'vc\acountry', 'vc\adig' and 'vc\ahost'folders. + + These reference VC++ 6.0 configurations are generated using the dynamic CRT. + + + How to build using Visual Studio 2003 or newer IDE + -------------------------------------------------- + + First you have to convert the VC++ 6.0 reference workspace and project files + to the Visual Studio IDE version you are using, following next steps: + + 1) Open vc\vc6aws.dsw with VS20XX. + 2) Allow VS20XX to update all projects and workspaces. + 3) Save ALL and close VS20XX. + 4) Open vc\vc6aws.sln with VS20XX. + 5) Select batch build, check 'all' projects and click 'build' button. + + Same comments relative to generated files and folders as done above for + Visual Studio 6 IDE apply here. + + + Relationship between c-ares library file names and versions + ----------------------------------------------------------- + + c-ares static release library version files: + + libcares.lib -> static release library + + c-ares static debug library version files: + + libcaresd.lib -> static debug library + + c-ares dynamic release library version files: + + cares.dll -> dynamic release library + cares.lib -> import library for the dynamic release library + cares.exp -> export file for the dynamic release library + + c-ares dynamic debug library version files: + + caresd.dll -> dynamic debug library + caresd.lib -> import library for the dynamic debug library + caresd.exp -> export file for the dynamic debug library + caresd.pdb -> debug symbol file for the dynamic debug library + + + How to use c-ares static libraries + ---------------------------------- + + When using the c-ares static library in your program, you will have to + define preprocessor symbol CARES_STATICLIB while building your program, + otherwise you will get errors at linkage stage. + + +Have Fun! + diff --git a/RELEASE-NOTES b/RELEASE-NOTES new file mode 100644 index 0000000..06d7856 --- /dev/null +++ b/RELEASE-NOTES @@ -0,0 +1,26 @@ +c-ares version 1.7.5 + +Fixed: + + o detection of semicolon comments in resolv.conf + o avoid using system's inet_net_pton affected by the WLB-2008080064 advisory + o replacement ares_inet_net_pton affected by the WLB-2008080064 advisory + o replacement ares_inet_ntop affected by potential out of bounds write + o added install target to Makefile.msvc + o only fall back to AF_INET searches when looking for AF_UNSPEC addresses + o fixed ares_parse_*_reply memory leaks + o Use correct sizeof in ares_getnameinfo() + o IPv6-on-windows: find DNS servers correctly + o man pages: docs for the c-ares utility programs + o getservbyport replacement for Win CE + o config_sortlist: (win32) missing else + o advance_tcp_send_queue: avoid NULL ptr dereference + o configure: fix a bashism + o ares_expand_name: Fix encoded length for indirect root + +Thanks go to these friendly people for their efforts and contributions: + + Yang Tse, Jakub Hrozek, Gisle Vanem, Tom Hughes, David Stuart, Dima Tisnek, + Peter Pentchev, Stefan Buhler + +Have fun! @@ -0,0 +1,23 @@ +TODO +==== + +ares_reinit() + +- To allow an app to force a re-read of /etc/resolv.conf etc, pretty much + like the res_init() resolver function offers + +ares_gethostbyname + +- When built to support IPv6, it needs to also support PF_UNSPEC or similar, + so that an application can ask for any protocol and then c-ares would return + all known resolves and not just explicitly IPv4 _or_ IPv6 resolves. + +ares_process + +- Upon next ABI breakage ares_process() should be changed to return 'int' + and return ARES_ENOTINITIALIZED if ares_library_init() has not been called. + +ares_process_fd + +- Upon next ABI breakage ares_process_fd() should be changed to return + 'int' and return ARES_ENOTINITIALIZED if library has not been initialized. diff --git a/acinclude.m4 b/acinclude.m4 new file mode 100644 index 0000000..9606131 --- /dev/null +++ b/acinclude.m4 @@ -0,0 +1,1938 @@ + + +dnl CURL_CHECK_DEF (SYMBOL, [INCLUDES], [SILENT]) +dnl ------------------------------------------------- +dnl Use the C preprocessor to find out if the given object-style symbol +dnl is defined and get its expansion. This macro will not use default +dnl includes even if no INCLUDES argument is given. This macro will run +dnl silently when invoked with three arguments. If the expansion would +dnl result in a set of double-quoted strings the returned expansion will +dnl actually be a single double-quoted string concatenating all them. + +AC_DEFUN([CURL_CHECK_DEF], [ + AS_VAR_PUSHDEF([ac_HaveDef], [curl_cv_have_def_$1])dnl + AS_VAR_PUSHDEF([ac_Def], [curl_cv_def_$1])dnl + if test -z "$SED"; then + AC_MSG_ERROR([SED not set. Cannot continue without SED being set.]) + fi + if test -z "$GREP"; then + AC_MSG_ERROR([GREP not set. Cannot continue without GREP being set.]) + fi + ifelse($3,,[AC_MSG_CHECKING([for preprocessor definition of $1])]) + tmp_exp="" + AC_PREPROC_IFELSE([ + AC_LANG_SOURCE( +ifelse($2,,,[$2])[[ +#ifdef $1 +CURL_DEF_TOKEN $1 +#endif + ]]) + ],[ + tmp_exp=`eval "$ac_cpp conftest.$ac_ext" 2>/dev/null | \ + "$GREP" CURL_DEF_TOKEN 2>/dev/null | \ + "$SED" 's/.*CURL_DEF_TOKEN[[ ]]//' 2>/dev/null | \ + "$SED" 's/[["]][[ ]]*[["]]//g' 2>/dev/null` + if test -z "$tmp_exp" || test "$tmp_exp" = "$1"; then + tmp_exp="" + fi + ]) + if test -z "$tmp_exp"; then + AS_VAR_SET(ac_HaveDef, no) + ifelse($3,,[AC_MSG_RESULT([no])]) + else + AS_VAR_SET(ac_HaveDef, yes) + AS_VAR_SET(ac_Def, $tmp_exp) + ifelse($3,,[AC_MSG_RESULT([$tmp_exp])]) + fi + AS_VAR_POPDEF([ac_Def])dnl + AS_VAR_POPDEF([ac_HaveDef])dnl +]) + + +dnl CURL_CHECK_DEF_CC (SYMBOL, [INCLUDES], [SILENT]) +dnl ------------------------------------------------- +dnl Use the C compiler to find out only if the given symbol is defined +dnl or not, this can not find out its expansion. This macro will not use +dnl default includes even if no INCLUDES argument is given. This macro +dnl will run silently when invoked with three arguments. + +AC_DEFUN([CURL_CHECK_DEF_CC], [ + AS_VAR_PUSHDEF([ac_HaveDef], [curl_cv_have_def_$1])dnl + ifelse($3,,[AC_MSG_CHECKING([for compiler definition of $1])]) + AC_COMPILE_IFELSE([ + AC_LANG_SOURCE( +ifelse($2,,,[$2])[[ +int main (void) +{ +#ifdef $1 + return 0; +#else + force compilation error +#endif +} + ]]) + ],[ + tst_symbol_defined="yes" + ],[ + tst_symbol_defined="no" + ]) + if test "$tst_symbol_defined" = "yes"; then + AS_VAR_SET(ac_HaveDef, yes) + ifelse($3,,[AC_MSG_RESULT([yes])]) + else + AS_VAR_SET(ac_HaveDef, no) + ifelse($3,,[AC_MSG_RESULT([no])]) + fi + AS_VAR_POPDEF([ac_HaveDef])dnl +]) + + +dnl CARES_CHECK_LIB_XNET +dnl ------------------------------------------------- +dnl Verify if X/Open network library is required. + +AC_DEFUN([CARES_CHECK_LIB_XNET], [ + AC_MSG_CHECKING([if X/Open network library is required]) + tst_lib_xnet_required="no" + AC_COMPILE_IFELSE([ + AC_LANG_SOURCE([[ +int main (void) +{ +#if defined(__hpux) && defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE >= 600) + return 0; +#elif defined(__hpux) && defined(_XOPEN_SOURCE_EXTENDED) + return 0; +#else + force compilation error +#endif +} + ]]) + ],[ + tst_lib_xnet_required="yes" + LIBS="$LIBS -lxnet" + ]) + AC_MSG_RESULT([$tst_lib_xnet_required]) +]) + + +dnl CARES_CHECK_AIX_ALL_SOURCE +dnl ------------------------------------------------- +dnl Provides a replacement of traditional AC_AIX with +dnl an uniform behaviour across all autoconf versions, +dnl and with our own placement rules. + +AC_DEFUN([CARES_CHECK_AIX_ALL_SOURCE], [ + AH_VERBATIM([_ALL_SOURCE], + [/* Define to 1 if OS is AIX. */ +#ifndef _ALL_SOURCE +# undef _ALL_SOURCE +#endif]) + AC_BEFORE([$0], [AC_SYS_LARGEFILE])dnl + AC_BEFORE([$0], [CARES_CONFIGURE_REENTRANT])dnl + AC_MSG_CHECKING([if OS is AIX (to define _ALL_SOURCE)]) + AC_EGREP_CPP([yes_this_is_aix],[ +#ifdef _AIX + yes_this_is_aix +#endif + ],[ + AC_MSG_RESULT([yes]) + AC_DEFINE(_ALL_SOURCE) + ],[ + AC_MSG_RESULT([no]) + ]) +]) + + +dnl CURL_CHECK_HEADER_WINDOWS +dnl ------------------------------------------------- +dnl Check for compilable and valid windows.h header + +AC_DEFUN([CURL_CHECK_HEADER_WINDOWS], [ + AC_CACHE_CHECK([for windows.h], [ac_cv_header_windows_h], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> + ]],[[ +#if defined(__CYGWIN__) || defined(__CEGCC__) + HAVE_WINDOWS_H shall not be defined. +#else + int dummy=2*WINVER; +#endif + ]]) + ],[ + ac_cv_header_windows_h="yes" + ],[ + ac_cv_header_windows_h="no" + ]) + ]) + case "$ac_cv_header_windows_h" in + yes) + AC_DEFINE_UNQUOTED(HAVE_WINDOWS_H, 1, + [Define to 1 if you have the windows.h header file.]) + AC_DEFINE_UNQUOTED(WIN32_LEAN_AND_MEAN, 1, + [Define to avoid automatic inclusion of winsock.h]) + ;; + esac +]) + + +dnl CURL_CHECK_NATIVE_WINDOWS +dnl ------------------------------------------------- +dnl Check if building a native Windows target + +AC_DEFUN([CURL_CHECK_NATIVE_WINDOWS], [ + AC_REQUIRE([CURL_CHECK_HEADER_WINDOWS])dnl + AC_CACHE_CHECK([whether build target is a native Windows one], [ac_cv_native_windows], [ + if test "$ac_cv_header_windows_h" = "no"; then + ac_cv_native_windows="no" + else + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + ]],[[ +#if defined(__MINGW32__) || defined(__MINGW32CE__) || \ + (defined(_MSC_VER) && (defined(_WIN32) || defined(_WIN64))) + int dummy=1; +#else + Not a native Windows build target. +#endif + ]]) + ],[ + ac_cv_native_windows="yes" + ],[ + ac_cv_native_windows="no" + ]) + fi + ]) + case "$ac_cv_native_windows" in + yes) + AC_DEFINE_UNQUOTED(NATIVE_WINDOWS, 1, + [Define to 1 if you are building a native Windows target.]) + ;; + esac +]) + + +dnl CURL_CHECK_HEADER_WINSOCK +dnl ------------------------------------------------- +dnl Check for compilable and valid winsock.h header + +AC_DEFUN([CURL_CHECK_HEADER_WINSOCK], [ + AC_REQUIRE([CURL_CHECK_HEADER_WINDOWS])dnl + AC_CACHE_CHECK([for winsock.h], [ac_cv_header_winsock_h], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#include <winsock.h> + ]],[[ +#if defined(__CYGWIN__) || defined(__CEGCC__) + HAVE_WINSOCK_H shall not be defined. +#else + int dummy=WSACleanup(); +#endif + ]]) + ],[ + ac_cv_header_winsock_h="yes" + ],[ + ac_cv_header_winsock_h="no" + ]) + ]) + case "$ac_cv_header_winsock_h" in + yes) + AC_DEFINE_UNQUOTED(HAVE_WINSOCK_H, 1, + [Define to 1 if you have the winsock.h header file.]) + ;; + esac +]) + + +dnl CURL_CHECK_HEADER_WINSOCK2 +dnl ------------------------------------------------- +dnl Check for compilable and valid winsock2.h header + +AC_DEFUN([CURL_CHECK_HEADER_WINSOCK2], [ + AC_REQUIRE([CURL_CHECK_HEADER_WINDOWS])dnl + AC_CACHE_CHECK([for winsock2.h], [ac_cv_header_winsock2_h], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#include <winsock2.h> + ]],[[ +#if defined(__CYGWIN__) || defined(__CEGCC__) || defined(__MINGW32CE__) + HAVE_WINSOCK2_H shall not be defined. +#else + int dummy=2*IPPROTO_ESP; +#endif + ]]) + ],[ + ac_cv_header_winsock2_h="yes" + ],[ + ac_cv_header_winsock2_h="no" + ]) + ]) + case "$ac_cv_header_winsock2_h" in + yes) + AC_DEFINE_UNQUOTED(HAVE_WINSOCK2_H, 1, + [Define to 1 if you have the winsock2.h header file.]) + ;; + esac +]) + + +dnl CURL_CHECK_HEADER_WS2TCPIP +dnl ------------------------------------------------- +dnl Check for compilable and valid ws2tcpip.h header + +AC_DEFUN([CURL_CHECK_HEADER_WS2TCPIP], [ + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK2])dnl + AC_CACHE_CHECK([for ws2tcpip.h], [ac_cv_header_ws2tcpip_h], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#include <winsock2.h> +#include <ws2tcpip.h> + ]],[[ +#if defined(__CYGWIN__) || defined(__CEGCC__) || defined(__MINGW32CE__) + HAVE_WS2TCPIP_H shall not be defined. +#else + int dummy=2*IP_PKTINFO; +#endif + ]]) + ],[ + ac_cv_header_ws2tcpip_h="yes" + ],[ + ac_cv_header_ws2tcpip_h="no" + ]) + ]) + case "$ac_cv_header_ws2tcpip_h" in + yes) + AC_DEFINE_UNQUOTED(HAVE_WS2TCPIP_H, 1, + [Define to 1 if you have the ws2tcpip.h header file.]) + ;; + esac +]) + + +dnl CURL_CHECK_HEADER_MALLOC +dnl ------------------------------------------------- +dnl Check for compilable and valid malloc.h header, +dnl and check if it is needed even with stdlib.h + +AC_DEFUN([CURL_CHECK_HEADER_MALLOC], [ + AC_CACHE_CHECK([for malloc.h], [ac_cv_header_malloc_h], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#include <malloc.h> + ]],[[ + void *p = malloc(10); + void *q = calloc(10,10); + free(p); + free(q); + ]]) + ],[ + ac_cv_header_malloc_h="yes" + ],[ + ac_cv_header_malloc_h="no" + ]) + ]) + if test "$ac_cv_header_malloc_h" = "yes"; then + AC_DEFINE_UNQUOTED(HAVE_MALLOC_H, 1, + [Define to 1 if you have the malloc.h header file.]) + # + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#include <stdlib.h> + ]],[[ + void *p = malloc(10); + void *q = calloc(10,10); + free(p); + free(q); + ]]) + ],[ + curl_cv_need_header_malloc_h="no" + ],[ + curl_cv_need_header_malloc_h="yes" + ]) + # + case "$curl_cv_need_header_malloc_h" in + yes) + AC_DEFINE_UNQUOTED(NEED_MALLOC_H, 1, + [Define to 1 if you need the malloc.h header file even with stdlib.h]) + ;; + esac + fi +]) + + +dnl CURL_CHECK_HEADER_MEMORY +dnl ------------------------------------------------- +dnl Check for compilable and valid memory.h header, +dnl and check if it is needed even with stdlib.h for +dnl memory related functions. + +AC_DEFUN([CURL_CHECK_HEADER_MEMORY], [ + AC_CACHE_CHECK([for memory.h], [ac_cv_header_memory_h], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#include <memory.h> + ]],[[ + void *p = malloc(10); + void *q = calloc(10,10); + free(p); + free(q); + ]]) + ],[ + ac_cv_header_memory_h="yes" + ],[ + ac_cv_header_memory_h="no" + ]) + ]) + if test "$ac_cv_header_memory_h" = "yes"; then + AC_DEFINE_UNQUOTED(HAVE_MEMORY_H, 1, + [Define to 1 if you have the memory.h header file.]) + # + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#include <stdlib.h> + ]],[[ + void *p = malloc(10); + void *q = calloc(10,10); + free(p); + free(q); + ]]) + ],[ + curl_cv_need_header_memory_h="no" + ],[ + curl_cv_need_header_memory_h="yes" + ]) + # + case "$curl_cv_need_header_memory_h" in + yes) + AC_DEFINE_UNQUOTED(NEED_MEMORY_H, 1, + [Define to 1 if you need the memory.h header file even with stdlib.h]) + ;; + esac + fi +]) + + +dnl CURL_CHECK_FUNC_GETNAMEINFO +dnl ------------------------------------------------- +dnl Test if the getnameinfo function is available, +dnl and check the types of five of its arguments. +dnl If the function succeeds HAVE_GETNAMEINFO will be +dnl defined, defining the types of the arguments in +dnl GETNAMEINFO_TYPE_ARG1, GETNAMEINFO_TYPE_ARG2, +dnl GETNAMEINFO_TYPE_ARG46 and GETNAMEINFO_TYPE_ARG7, +dnl and also defining the type qualifier of first +dnl argument in GETNAMEINFO_QUAL_ARG1. + +AC_DEFUN([CURL_CHECK_FUNC_GETNAMEINFO], [ + AC_REQUIRE([CURL_CHECK_HEADER_WS2TCPIP])dnl + AC_CHECK_HEADERS(sys/types.h sys/socket.h netdb.h) + # + AC_MSG_CHECKING([for getnameinfo]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([getnameinfo]) + ],[ + AC_MSG_RESULT([yes]) + curl_cv_getnameinfo="yes" + ],[ + AC_MSG_RESULT([no]) + curl_cv_getnameinfo="no" + ]) + # + if test "$curl_cv_getnameinfo" != "yes"; then + AC_MSG_CHECKING([deeper for getnameinfo]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + ]],[[ + getnameinfo(); + ]]) + ],[ + AC_MSG_RESULT([yes]) + curl_cv_getnameinfo="yes" + ],[ + AC_MSG_RESULT([but still no]) + curl_cv_getnameinfo="no" + ]) + fi + # + if test "$curl_cv_getnameinfo" != "yes"; then + AC_MSG_CHECKING([deeper and deeper for getnameinfo]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#ifdef HAVE_WS2TCPIP_H +#include <ws2tcpip.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif +#endif + ]],[[ + getnameinfo(0, 0, 0, 0, 0, 0, 0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + curl_cv_getnameinfo="yes" + ],[ + AC_MSG_RESULT([but still no]) + curl_cv_getnameinfo="no" + ]) + fi + # + if test "$curl_cv_getnameinfo" = "yes"; then + AC_CACHE_CHECK([types of arguments for getnameinfo], + [curl_cv_func_getnameinfo_args], [ + curl_cv_func_getnameinfo_args="unknown" + for gni_arg1 in 'struct sockaddr *' 'const struct sockaddr *' 'void *'; do + for gni_arg2 in 'socklen_t' 'size_t' 'int'; do + for gni_arg46 in 'size_t' 'int' 'socklen_t' 'unsigned int' 'DWORD'; do + for gni_arg7 in 'int' 'unsigned int'; do + if test "$curl_cv_func_getnameinfo_args" = "unknown"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#if (!defined(_WIN32_WINNT)) || (_WIN32_WINNT < 0x0501) +#undef _WIN32_WINNT +#define _WIN32_WINNT 0x0501 +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#ifdef HAVE_WS2TCPIP_H +#include <ws2tcpip.h> +#endif +#endif +#define GNICALLCONV WSAAPI +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif +#define GNICALLCONV +#endif + extern int GNICALLCONV getnameinfo($gni_arg1, $gni_arg2, + char *, $gni_arg46, + char *, $gni_arg46, + $gni_arg7); + ]],[[ + $gni_arg2 salen=0; + $gni_arg46 hostlen=0; + $gni_arg46 servlen=0; + $gni_arg7 flags=0; + int res = getnameinfo(0, salen, 0, hostlen, 0, servlen, flags); + ]]) + ],[ + curl_cv_func_getnameinfo_args="$gni_arg1,$gni_arg2,$gni_arg46,$gni_arg7" + ]) + fi + done + done + done + done + ]) # AC-CACHE-CHECK + if test "$curl_cv_func_getnameinfo_args" = "unknown"; then + AC_MSG_WARN([Cannot find proper types to use for getnameinfo args]) + AC_MSG_WARN([HAVE_GETNAMEINFO will not be defined]) + else + gni_prev_IFS=$IFS; IFS=',' + set dummy `echo "$curl_cv_func_getnameinfo_args" | sed 's/\*/\*/g'` + IFS=$gni_prev_IFS + shift + # + gni_qual_type_arg1=$[1] + # + AC_DEFINE_UNQUOTED(GETNAMEINFO_TYPE_ARG2, $[2], + [Define to the type of arg 2 for getnameinfo.]) + AC_DEFINE_UNQUOTED(GETNAMEINFO_TYPE_ARG46, $[3], + [Define to the type of args 4 and 6 for getnameinfo.]) + AC_DEFINE_UNQUOTED(GETNAMEINFO_TYPE_ARG7, $[4], + [Define to the type of arg 7 for getnameinfo.]) + # + prev_sh_opts=$- + # + case $prev_sh_opts in + *f*) + ;; + *) + set -f + ;; + esac + # + case "$gni_qual_type_arg1" in + const*) + gni_qual_arg1=const + gni_type_arg1=`echo $gni_qual_type_arg1 | sed 's/^const //'` + ;; + *) + gni_qual_arg1= + gni_type_arg1=$gni_qual_type_arg1 + ;; + esac + # + AC_DEFINE_UNQUOTED(GETNAMEINFO_QUAL_ARG1, $gni_qual_arg1, + [Define to the type qualifier of arg 1 for getnameinfo.]) + AC_DEFINE_UNQUOTED(GETNAMEINFO_TYPE_ARG1, $gni_type_arg1, + [Define to the type of arg 1 for getnameinfo.]) + # + case $prev_sh_opts in + *f*) + ;; + *) + set +f + ;; + esac + # + AC_DEFINE_UNQUOTED(HAVE_GETNAMEINFO, 1, + [Define to 1 if you have the getnameinfo function.]) + ac_cv_func_getnameinfo="yes" + fi + fi +]) + + +dnl TYPE_SOCKADDR_STORAGE +dnl ------------------------------------------------- +dnl Check for struct sockaddr_storage. Most IPv6-enabled +dnl hosts have it, but AIX 4.3 is one known exception. + +AC_DEFUN([TYPE_SOCKADDR_STORAGE], +[ + AC_CHECK_TYPE([struct sockaddr_storage], + AC_DEFINE(HAVE_STRUCT_SOCKADDR_STORAGE, 1, + [if struct sockaddr_storage is defined]), , + [ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +#include <arpa/inet.h> +#endif +#endif + ]) +]) + + +dnl CURL_CHECK_NI_WITHSCOPEID +dnl ------------------------------------------------- +dnl Check for working NI_WITHSCOPEID in getnameinfo() + +AC_DEFUN([CURL_CHECK_NI_WITHSCOPEID], [ + AC_REQUIRE([CURL_CHECK_FUNC_GETNAMEINFO])dnl + AC_REQUIRE([TYPE_SOCKADDR_STORAGE])dnl + AC_CHECK_HEADERS(stdio.h sys/types.h sys/socket.h \ + netdb.h netinet/in.h arpa/inet.h) + # + AC_CACHE_CHECK([for working NI_WITHSCOPEID], + [ac_cv_working_ni_withscopeid], [ + AC_RUN_IFELSE([ + AC_LANG_PROGRAM([[ +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#ifdef HAVE_STDIO_H +#include <stdio.h> +#endif +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +#include <arpa/inet.h> +#endif + ]],[[ +#if defined(NI_WITHSCOPEID) && defined(HAVE_GETNAMEINFO) +#ifdef HAVE_STRUCT_SOCKADDR_STORAGE + struct sockaddr_storage sa; +#else + unsigned char sa[256]; +#endif + char hostbuf[NI_MAXHOST]; + int rc; + GETNAMEINFO_TYPE_ARG2 salen = (GETNAMEINFO_TYPE_ARG2)sizeof(sa); + GETNAMEINFO_TYPE_ARG46 hostlen = (GETNAMEINFO_TYPE_ARG46)sizeof(hostbuf); + GETNAMEINFO_TYPE_ARG7 flags = NI_NUMERICHOST | NI_NUMERICSERV | NI_WITHSCOPEID; + int fd = socket(AF_INET6, SOCK_STREAM, 0); + if(fd < 0) { + perror("socket()"); + return 1; /* Error creating socket */ + } + rc = getsockname(fd, (GETNAMEINFO_TYPE_ARG1)&sa, &salen); + if(rc) { + perror("getsockname()"); + return 2; /* Error retrieving socket name */ + } + rc = getnameinfo((GETNAMEINFO_TYPE_ARG1)&sa, salen, hostbuf, hostlen, NULL, 0, flags); + if(rc) { + printf("rc = %s\n", gai_strerror(rc)); + return 3; /* Error translating socket address */ + } + return 0; /* Ok, NI_WITHSCOPEID works */ +#else + return 4; /* Error, NI_WITHSCOPEID not defined or no getnameinfo() */ +#endif + ]]) # AC-LANG-PROGRAM + ],[ + # Exit code == 0. Program worked. + ac_cv_working_ni_withscopeid="yes" + ],[ + # Exit code != 0. Program failed. + ac_cv_working_ni_withscopeid="no" + ],[ + # Program is not run when cross-compiling. So we assume + # NI_WITHSCOPEID will work if we are able to compile it. + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/socket.h> +#include <netdb.h> + ]],[[ + unsigned int dummy= NI_NUMERICHOST | NI_NUMERICSERV | NI_WITHSCOPEID; + ]]) + ],[ + ac_cv_working_ni_withscopeid="yes" + ],[ + ac_cv_working_ni_withscopeid="no" + ]) # AC-COMPILE-IFELSE + ]) # AC-RUN-IFELSE + ]) # AC-CACHE-CHECK + case "$ac_cv_working_ni_withscopeid" in + yes) + AC_DEFINE(HAVE_NI_WITHSCOPEID, 1, + [Define to 1 if NI_WITHSCOPEID exists and works.]) + ;; + esac +]) + + +dnl CURL_CHECK_FUNC_RECV +dnl ------------------------------------------------- +dnl Test if the socket recv() function is available, +dnl and check its return type and the types of its +dnl arguments. If the function succeeds HAVE_RECV +dnl will be defined, defining the types of the arguments +dnl in RECV_TYPE_ARG1, RECV_TYPE_ARG2, RECV_TYPE_ARG3 +dnl and RECV_TYPE_ARG4, defining the type of the function +dnl return value in RECV_TYPE_RETV. + +AC_DEFUN([CURL_CHECK_FUNC_RECV], [ + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK])dnl + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK2])dnl + AC_CHECK_HEADERS(sys/types.h sys/socket.h) + # + AC_MSG_CHECKING([for recv]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#endif + ]],[[ + recv(0, 0, 0, 0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + curl_cv_recv="yes" + ],[ + AC_MSG_RESULT([no]) + curl_cv_recv="no" + ]) + # + if test "$curl_cv_recv" = "yes"; then + AC_CACHE_CHECK([types of args and return type for recv], + [curl_cv_func_recv_args], [ + curl_cv_func_recv_args="unknown" + for recv_retv in 'int' 'ssize_t'; do + for recv_arg1 in 'int' 'ssize_t' 'SOCKET'; do + for recv_arg2 in 'char *' 'void *'; do + for recv_arg3 in 'size_t' 'int' 'socklen_t' 'unsigned int'; do + for recv_arg4 in 'int' 'unsigned int'; do + if test "$curl_cv_func_recv_args" = "unknown"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#define RECVCALLCONV PASCAL +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#define RECVCALLCONV +#endif + extern $recv_retv RECVCALLCONV + recv($recv_arg1, $recv_arg2, $recv_arg3, $recv_arg4); + ]],[[ + $recv_arg1 s=0; + $recv_arg2 buf=0; + $recv_arg3 len=0; + $recv_arg4 flags=0; + $recv_retv res = recv(s, buf, len, flags); + ]]) + ],[ + curl_cv_func_recv_args="$recv_arg1,$recv_arg2,$recv_arg3,$recv_arg4,$recv_retv" + ]) + fi + done + done + done + done + done + ]) # AC-CACHE-CHECK + if test "$curl_cv_func_recv_args" = "unknown"; then + AC_MSG_ERROR([Cannot find proper types to use for recv args]) + else + recv_prev_IFS=$IFS; IFS=',' + set dummy `echo "$curl_cv_func_recv_args" | sed 's/\*/\*/g'` + IFS=$recv_prev_IFS + shift + # + AC_DEFINE_UNQUOTED(RECV_TYPE_ARG1, $[1], + [Define to the type of arg 1 for recv.]) + AC_DEFINE_UNQUOTED(RECV_TYPE_ARG2, $[2], + [Define to the type of arg 2 for recv.]) + AC_DEFINE_UNQUOTED(RECV_TYPE_ARG3, $[3], + [Define to the type of arg 3 for recv.]) + AC_DEFINE_UNQUOTED(RECV_TYPE_ARG4, $[4], + [Define to the type of arg 4 for recv.]) + AC_DEFINE_UNQUOTED(RECV_TYPE_RETV, $[5], + [Define to the function return type for recv.]) + # + AC_DEFINE_UNQUOTED(HAVE_RECV, 1, + [Define to 1 if you have the recv function.]) + ac_cv_func_recv="yes" + fi + else + AC_MSG_ERROR([Unable to link function recv]) + fi +]) + + +dnl CURL_CHECK_FUNC_SEND +dnl ------------------------------------------------- +dnl Test if the socket send() function is available, +dnl and check its return type and the types of its +dnl arguments. If the function succeeds HAVE_SEND +dnl will be defined, defining the types of the arguments +dnl in SEND_TYPE_ARG1, SEND_TYPE_ARG2, SEND_TYPE_ARG3 +dnl and SEND_TYPE_ARG4, defining the type of the function +dnl return value in SEND_TYPE_RETV, and also defining the +dnl type qualifier of second argument in SEND_QUAL_ARG2. + +AC_DEFUN([CURL_CHECK_FUNC_SEND], [ + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK])dnl + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK2])dnl + AC_CHECK_HEADERS(sys/types.h sys/socket.h) + # + AC_MSG_CHECKING([for send]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#endif + ]],[[ + send(0, 0, 0, 0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + curl_cv_send="yes" + ],[ + AC_MSG_RESULT([no]) + curl_cv_send="no" + ]) + # + if test "$curl_cv_send" = "yes"; then + AC_CACHE_CHECK([types of args and return type for send], + [curl_cv_func_send_args], [ + curl_cv_func_send_args="unknown" + for send_retv in 'int' 'ssize_t'; do + for send_arg1 in 'int' 'ssize_t' 'SOCKET'; do + for send_arg2 in 'char *' 'void *' 'const char *' 'const void *'; do + for send_arg3 in 'size_t' 'int' 'socklen_t' 'unsigned int'; do + for send_arg4 in 'int' 'unsigned int'; do + if test "$curl_cv_func_send_args" = "unknown"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#define SENDCALLCONV PASCAL +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#define SENDCALLCONV +#endif + extern $send_retv SENDCALLCONV + send($send_arg1, $send_arg2, $send_arg3, $send_arg4); + ]],[[ + $send_arg1 s=0; + $send_arg3 len=0; + $send_arg4 flags=0; + $send_retv res = send(s, 0, len, flags); + ]]) + ],[ + curl_cv_func_send_args="$send_arg1,$send_arg2,$send_arg3,$send_arg4,$send_retv" + ]) + fi + done + done + done + done + done + ]) # AC-CACHE-CHECK + if test "$curl_cv_func_send_args" = "unknown"; then + AC_MSG_ERROR([Cannot find proper types to use for send args]) + else + send_prev_IFS=$IFS; IFS=',' + set dummy `echo "$curl_cv_func_send_args" | sed 's/\*/\*/g'` + IFS=$send_prev_IFS + shift + # + send_qual_type_arg2=$[2] + # + AC_DEFINE_UNQUOTED(SEND_TYPE_ARG1, $[1], + [Define to the type of arg 1 for send.]) + AC_DEFINE_UNQUOTED(SEND_TYPE_ARG3, $[3], + [Define to the type of arg 3 for send.]) + AC_DEFINE_UNQUOTED(SEND_TYPE_ARG4, $[4], + [Define to the type of arg 4 for send.]) + AC_DEFINE_UNQUOTED(SEND_TYPE_RETV, $[5], + [Define to the function return type for send.]) + # + prev_sh_opts=$- + # + case $prev_sh_opts in + *f*) + ;; + *) + set -f + ;; + esac + # + case "$send_qual_type_arg2" in + const*) + send_qual_arg2=const + send_type_arg2=`echo $send_qual_type_arg2 | sed 's/^const //'` + ;; + *) + send_qual_arg2= + send_type_arg2=$send_qual_type_arg2 + ;; + esac + # + AC_DEFINE_UNQUOTED(SEND_QUAL_ARG2, $send_qual_arg2, + [Define to the type qualifier of arg 2 for send.]) + AC_DEFINE_UNQUOTED(SEND_TYPE_ARG2, $send_type_arg2, + [Define to the type of arg 2 for send.]) + # + case $prev_sh_opts in + *f*) + ;; + *) + set +f + ;; + esac + # + AC_DEFINE_UNQUOTED(HAVE_SEND, 1, + [Define to 1 if you have the send function.]) + ac_cv_func_send="yes" + fi + else + AC_MSG_ERROR([Unable to link function send]) + fi +]) + + +dnl CURL_CHECK_FUNC_RECVFROM +dnl ------------------------------------------------- +dnl Test if the socket recvfrom() function is available, +dnl and check its return type and the types of its +dnl arguments. If the function succeeds HAVE_RECVFROM +dnl will be defined, defining the types of the arguments +dnl in RECVFROM_TYPE_ARG1, RECVFROM_TYPE_ARG2, and so on +dnl to RECVFROM_TYPE_ARG6, defining also the type of the +dnl function return value in RECVFROM_TYPE_RETV. +dnl Notice that the types returned for pointer arguments +dnl will actually be the type pointed by the pointer. + +AC_DEFUN([CURL_CHECK_FUNC_RECVFROM], [ + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK])dnl + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK2])dnl + AC_CHECK_HEADERS(sys/types.h sys/socket.h) + # + AC_MSG_CHECKING([for recvfrom]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#endif + ]],[[ + recvfrom(0, 0, 0, 0, 0, 0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + curl_cv_recvfrom="yes" + ],[ + AC_MSG_RESULT([no]) + curl_cv_recvfrom="no" + ]) + # + if test "$curl_cv_recvfrom" = "yes"; then + AC_CACHE_CHECK([types of args and return type for recvfrom], + [curl_cv_func_recvfrom_args], [ + curl_cv_func_recvfrom_args="unknown" + for recvfrom_retv in 'int' 'ssize_t'; do + for recvfrom_arg1 in 'int' 'ssize_t' 'SOCKET'; do + for recvfrom_arg2 in 'char *' 'void *'; do + for recvfrom_arg3 in 'size_t' 'int' 'socklen_t' 'unsigned int'; do + for recvfrom_arg4 in 'int' 'unsigned int'; do + for recvfrom_arg5 in 'struct sockaddr *' 'void *' 'const struct sockaddr *'; do + for recvfrom_arg6 in 'socklen_t *' 'int *' 'unsigned int *' 'size_t *' 'void *'; do + if test "$curl_cv_func_recvfrom_args" = "unknown"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#define RECVFROMCALLCONV PASCAL +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#define RECVFROMCALLCONV +#endif + extern $recvfrom_retv RECVFROMCALLCONV + recvfrom($recvfrom_arg1, $recvfrom_arg2, + $recvfrom_arg3, $recvfrom_arg4, + $recvfrom_arg5, $recvfrom_arg6); + ]],[[ + $recvfrom_arg1 s=0; + $recvfrom_arg2 buf=0; + $recvfrom_arg3 len=0; + $recvfrom_arg4 flags=0; + $recvfrom_arg5 addr=0; + $recvfrom_arg6 addrlen=0; + $recvfrom_retv res=0; + res = recvfrom(s, buf, len, flags, addr, addrlen); + ]]) + ],[ + curl_cv_func_recvfrom_args="$recvfrom_arg1,$recvfrom_arg2,$recvfrom_arg3,$recvfrom_arg4,$recvfrom_arg5,$recvfrom_arg6,$recvfrom_retv" + ]) + fi + done + done + done + done + done + done + done + ]) # AC-CACHE-CHECK + # Nearly last minute change for this release starts here + AC_DEFINE_UNQUOTED(HAVE_RECVFROM, 1, + [Define to 1 if you have the recvfrom function.]) + ac_cv_func_recvfrom="yes" + # Nearly last minute change for this release ends here + if test "$curl_cv_func_recvfrom_args" = "unknown"; then + AC_MSG_WARN([Cannot find proper types to use for recvfrom args]) + else + recvfrom_prev_IFS=$IFS; IFS=',' + set dummy `echo "$curl_cv_func_recvfrom_args" | sed 's/\*/\*/g'` + IFS=$recvfrom_prev_IFS + shift + # + recvfrom_ptrt_arg2=$[2] + recvfrom_qual_ptrt_arg5=$[5] + recvfrom_ptrt_arg6=$[6] + # + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG1, $[1], + [Define to the type of arg 1 for recvfrom.]) + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG3, $[3], + [Define to the type of arg 3 for recvfrom.]) + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG4, $[4], + [Define to the type of arg 4 for recvfrom.]) + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_RETV, $[7], + [Define to the function return type for recvfrom.]) + # + prev_sh_opts=$- + # + case $prev_sh_opts in + *f*) + ;; + *) + set -f + ;; + esac + # + case "$recvfrom_qual_ptrt_arg5" in + const*) + recvfrom_qual_arg5=const + recvfrom_ptrt_arg5=`echo $recvfrom_qual_ptrt_arg5 | sed 's/^const //'` + ;; + *) + recvfrom_qual_arg5= + recvfrom_ptrt_arg5=$recvfrom_qual_ptrt_arg5 + ;; + esac + # + recvfrom_type_arg2=`echo $recvfrom_ptrt_arg2 | sed 's/ \*//'` + recvfrom_type_arg5=`echo $recvfrom_ptrt_arg5 | sed 's/ \*//'` + recvfrom_type_arg6=`echo $recvfrom_ptrt_arg6 | sed 's/ \*//'` + # + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG2, $recvfrom_type_arg2, + [Define to the type pointed by arg 2 for recvfrom.]) + AC_DEFINE_UNQUOTED(RECVFROM_QUAL_ARG5, $recvfrom_qual_arg5, + [Define to the type qualifier pointed by arg 5 for recvfrom.]) + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG5, $recvfrom_type_arg5, + [Define to the type pointed by arg 5 for recvfrom.]) + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG6, $recvfrom_type_arg6, + [Define to the type pointed by arg 6 for recvfrom.]) + # + if test "$recvfrom_type_arg2" = "void"; then + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG2_IS_VOID, 1, + [Define to 1 if the type pointed by arg 2 for recvfrom is void.]) + fi + if test "$recvfrom_type_arg5" = "void"; then + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG5_IS_VOID, 1, + [Define to 1 if the type pointed by arg 5 for recvfrom is void.]) + fi + if test "$recvfrom_type_arg6" = "void"; then + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG6_IS_VOID, 1, + [Define to 1 if the type pointed by arg 6 for recvfrom is void.]) + fi + # + case $prev_sh_opts in + *f*) + ;; + *) + set +f + ;; + esac + # + AC_DEFINE_UNQUOTED(HAVE_RECVFROM, 1, + [Define to 1 if you have the recvfrom function.]) + ac_cv_func_recvfrom="yes" + fi + else + AC_MSG_WARN([Unable to link function recvfrom]) + AC_MSG_WARN([Your system will be vulnerable to some forms of DNS cache poisoning]) + fi +]) + + +dnl CURL_CHECK_MSG_NOSIGNAL +dnl ------------------------------------------------- +dnl Check for MSG_NOSIGNAL + +AC_DEFUN([CURL_CHECK_MSG_NOSIGNAL], [ + AC_CHECK_HEADERS(sys/types.h sys/socket.h) + AC_CACHE_CHECK([for MSG_NOSIGNAL], [ac_cv_msg_nosignal], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#endif + ]],[[ + int flag=MSG_NOSIGNAL; + ]]) + ],[ + ac_cv_msg_nosignal="yes" + ],[ + ac_cv_msg_nosignal="no" + ]) + ]) + case "$ac_cv_msg_nosignal" in + yes) + AC_DEFINE_UNQUOTED(HAVE_MSG_NOSIGNAL, 1, + [Define to 1 if you have the MSG_NOSIGNAL flag.]) + ;; + esac +]) + + +dnl CURL_CHECK_STRUCT_TIMEVAL +dnl ------------------------------------------------- +dnl Check for timeval struct + +AC_DEFUN([CURL_CHECK_STRUCT_TIMEVAL], [ + AC_REQUIRE([AC_HEADER_TIME])dnl + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK])dnl + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK2])dnl + AC_CHECK_HEADERS(sys/types.h sys/time.h time.h sys/socket.h) + AC_CACHE_CHECK([for struct timeval], [ac_cv_struct_timeval], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#endif +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#ifdef TIME_WITH_SYS_TIME +#include <time.h> +#endif +#else +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif + ]],[[ + struct timeval ts; + ts.tv_sec = 0; + ts.tv_usec = 0; + ]]) + ],[ + ac_cv_struct_timeval="yes" + ],[ + ac_cv_struct_timeval="no" + ]) + ]) + case "$ac_cv_struct_timeval" in + yes) + AC_DEFINE_UNQUOTED(HAVE_STRUCT_TIMEVAL, 1, + [Define to 1 if you have the timeval struct.]) + ;; + esac +]) + + +dnl TYPE_SIG_ATOMIC_T +dnl ------------------------------------------------- +dnl Check if the sig_atomic_t type is available, and +dnl verify if it is already defined as volatile. + +AC_DEFUN([TYPE_SIG_ATOMIC_T], [ + AC_CHECK_HEADERS(signal.h) + AC_CHECK_TYPE([sig_atomic_t],[ + AC_DEFINE(HAVE_SIG_ATOMIC_T, 1, + [Define to 1 if sig_atomic_t is an available typedef.]) + ], ,[ +#ifdef HAVE_SIGNAL_H +#include <signal.h> +#endif + ]) + case "$ac_cv_type_sig_atomic_t" in + yes) + # + AC_MSG_CHECKING([if sig_atomic_t is already defined as volatile]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#ifdef HAVE_SIGNAL_H +#include <signal.h> +#endif + ]],[[ + static volatile sig_atomic_t dummy = 0; + ]]) + ],[ + AC_MSG_RESULT([no]) + ac_cv_sig_atomic_t_volatile="no" + ],[ + AC_MSG_RESULT([yes]) + ac_cv_sig_atomic_t_volatile="yes" + ]) + # + if test "$ac_cv_sig_atomic_t_volatile" = "yes"; then + AC_DEFINE(HAVE_SIG_ATOMIC_T_VOLATILE, 1, + [Define to 1 if sig_atomic_t is already defined as volatile.]) + fi + ;; + esac +]) + + +dnl TYPE_IN_ADDR_T +dnl ------------------------------------------------- +dnl Check for in_addr_t: it is used to receive the return code of inet_addr() +dnl and a few other things. + +AC_DEFUN([TYPE_IN_ADDR_T], [ + AC_CHECK_TYPE([in_addr_t], ,[ + dnl in_addr_t not available + AC_CACHE_CHECK([for in_addr_t equivalent], + [curl_cv_in_addr_t_equiv], [ + curl_cv_in_addr_t_equiv="unknown" + for t in "unsigned long" int size_t unsigned long; do + if test "$curl_cv_in_addr_t_equiv" = "unknown"; then + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +#include <arpa/inet.h> +#endif +#endif + ]],[[ + $t data = inet_addr ("1.2.3.4"); + ]]) + ],[ + curl_cv_in_addr_t_equiv="$t" + ]) + fi + done + ]) + case "$curl_cv_in_addr_t_equiv" in + unknown) + AC_MSG_ERROR([Cannot find a type to use in place of in_addr_t]) + ;; + *) + AC_DEFINE_UNQUOTED(in_addr_t, $curl_cv_in_addr_t_equiv, + [Type to use in place of in_addr_t when system does not provide it.]) + ;; + esac + ],[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +#include <arpa/inet.h> +#endif +#endif + ]) +]) + + +dnl CURL_CHECK_FUNC_CLOCK_GETTIME_MONOTONIC +dnl ------------------------------------------------- +dnl Check if monotonic clock_gettime is available. + +AC_DEFUN([CURL_CHECK_FUNC_CLOCK_GETTIME_MONOTONIC], [ + AC_REQUIRE([AC_HEADER_TIME])dnl + AC_CHECK_HEADERS(sys/types.h sys/time.h time.h) + AC_MSG_CHECKING([for monotonic clock_gettime]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#ifdef TIME_WITH_SYS_TIME +#include <time.h> +#endif +#else +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#endif + ]],[[ + struct timespec ts; + (void)clock_gettime(CLOCK_MONOTONIC, &ts); + ]]) + ],[ + AC_MSG_RESULT([yes]) + ac_cv_func_clock_gettime="yes" + ],[ + AC_MSG_RESULT([no]) + ac_cv_func_clock_gettime="no" + ]) + dnl Definition of HAVE_CLOCK_GETTIME_MONOTONIC is intentionally postponed + dnl until library linking and run-time checks for clock_gettime succeed. +]) + + +dnl CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC +dnl ------------------------------------------------- +dnl If monotonic clock_gettime is available then, +dnl check and prepended to LIBS any needed libraries. + +AC_DEFUN([CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC], [ + AC_REQUIRE([CURL_CHECK_FUNC_CLOCK_GETTIME_MONOTONIC])dnl + # + if test "$ac_cv_func_clock_gettime" = "yes"; then + # + AC_MSG_CHECKING([for clock_gettime in libraries]) + # + curl_cv_save_LIBS="$LIBS" + curl_cv_gclk_LIBS="unknown" + # + for x_xlibs in '' '-lrt' '-lposix4' ; do + if test "$curl_cv_gclk_LIBS" = "unknown"; then + if test -z "$x_xlibs"; then + LIBS="$curl_cv_save_LIBS" + else + LIBS="$x_xlibs $curl_cv_save_LIBS" + fi + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#ifdef TIME_WITH_SYS_TIME +#include <time.h> +#endif +#else +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#endif + ]],[[ + struct timespec ts; + (void)clock_gettime(CLOCK_MONOTONIC, &ts); + ]]) + ],[ + curl_cv_gclk_LIBS="$x_xlibs" + ]) + fi + done + # + LIBS="$curl_cv_save_LIBS" + # + case X-"$curl_cv_gclk_LIBS" in + X-unknown) + AC_MSG_RESULT([cannot find clock_gettime]) + AC_MSG_WARN([HAVE_CLOCK_GETTIME_MONOTONIC will not be defined]) + ac_cv_func_clock_gettime="no" + ;; + X-) + AC_MSG_RESULT([no additional lib required]) + ac_cv_func_clock_gettime="yes" + ;; + *) + if test -z "$curl_cv_save_LIBS"; then + LIBS="$curl_cv_gclk_LIBS" + else + LIBS="$curl_cv_gclk_LIBS $curl_cv_save_LIBS" + fi + AC_MSG_RESULT([$curl_cv_gclk_LIBS]) + ac_cv_func_clock_gettime="yes" + ;; + esac + # + dnl only do runtime verification when not cross-compiling + if test "x$cross_compiling" != "xyes" && + test "$ac_cv_func_clock_gettime" = "yes"; then + AC_MSG_CHECKING([if monotonic clock_gettime works]) + AC_RUN_IFELSE([ + AC_LANG_PROGRAM([[ +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#ifdef TIME_WITH_SYS_TIME +#include <time.h> +#endif +#else +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#endif + ]],[[ + struct timespec ts; + if (0 == clock_gettime(CLOCK_MONOTONIC, &ts)) + exit(0); + else + exit(1); + ]]) + ],[ + AC_MSG_RESULT([yes]) + ],[ + AC_MSG_RESULT([no]) + AC_MSG_WARN([HAVE_CLOCK_GETTIME_MONOTONIC will not be defined]) + ac_cv_func_clock_gettime="no" + LIBS="$curl_cv_save_LIBS" + ]) + fi + # + case "$ac_cv_func_clock_gettime" in + yes) + AC_DEFINE_UNQUOTED(HAVE_CLOCK_GETTIME_MONOTONIC, 1, + [Define to 1 if you have the clock_gettime function and monotonic timer.]) + ;; + esac + # + fi + # +]) + + +dnl CARES_CHECK_LIBS_CONNECT +dnl ------------------------------------------------- +dnl Verify if network connect function is already available +dnl using current libraries or if another one is required. + +AC_DEFUN([CARES_CHECK_LIBS_CONNECT], [ + AC_REQUIRE([CARES_INCLUDES_WINSOCK2])dnl + AC_MSG_CHECKING([for connect in libraries]) + tst_connect_save_LIBS="$LIBS" + tst_connect_need_LIBS="unknown" + for tst_lib in '' '-lsocket' ; do + if test "$tst_connect_need_LIBS" = "unknown"; then + LIBS="$tst_lib $tst_connect_save_LIBS" + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + #ifndef HAVE_WINDOWS_H + int connect(int, void*, int); + #endif + ]],[[ + if(0 != connect(0, 0, 0)) + return 1; + ]]) + ],[ + tst_connect_need_LIBS="$tst_lib" + ]) + fi + done + LIBS="$tst_connect_save_LIBS" + # + case X-"$tst_connect_need_LIBS" in + X-unknown) + AC_MSG_RESULT([cannot find connect]) + AC_MSG_ERROR([cannot find connect function in libraries.]) + ;; + X-) + AC_MSG_RESULT([yes]) + ;; + *) + AC_MSG_RESULT([$tst_connect_need_LIBS]) + LIBS="$tst_connect_need_LIBS $tst_connect_save_LIBS" + ;; + esac +]) + + +dnl CARES_DEFINE_UNQUOTED (VARIABLE, [VALUE]) +dnl ------------------------------------------------- +dnl Like AC_DEFINE_UNQUOTED this macro will define a C preprocessor +dnl symbol that can be further used in custom template configuration +dnl files. This macro, unlike AC_DEFINE_UNQUOTED, does not use a third +dnl argument for the description. Symbol definitions done with this +dnl macro are intended to be exclusively used in handcrafted *.h.in +dnl template files. Contrary to what AC_DEFINE_UNQUOTED does, this one +dnl prevents autoheader generation and insertion of symbol template +dnl stub and definition into the first configuration header file. Do +dnl not use this macro as a replacement for AC_DEFINE_UNQUOTED, each +dnl one serves different functional needs. + +AC_DEFUN([CARES_DEFINE_UNQUOTED], [ +cat >>confdefs.h <<_EOF +[@%:@define] $1 ifelse($#, 2, [$2], 1) +_EOF +]) + + +dnl CARES_CONFIGURE_LONG +dnl ------------------------------------------------- +dnl Find out the size of long as reported by sizeof() and define +dnl CARES_SIZEOF_LONG as appropriate to be used in template file +dnl ares_build.h.in to properly configure the library. +dnl The size of long is a build time characteristic and as such +dnl must be recorded in ares_build.h + +AC_DEFUN([CARES_CONFIGURE_LONG], [ + if test -z "$ac_cv_sizeof_long" || + test "$ac_cv_sizeof_long" -eq "0"; then + AC_MSG_ERROR([cannot find out size of long.]) + fi + CARES_DEFINE_UNQUOTED([CARES_SIZEOF_LONG], [$ac_cv_sizeof_long]) +]) + + +dnl CARES_CONFIGURE_ARES_SOCKLEN_T +dnl ------------------------------------------------- +dnl Find out suitable ares_socklen_t data type definition and size, making +dnl appropriate definitions for template file ares_build.h.in +dnl to properly configure and use the library. +dnl +dnl The need for the ares_socklen_t definition arises mainly to properly +dnl interface HP-UX systems which on one hand have a typedef'ed socklen_t +dnl data type which is 32 or 64-Bit wide depending on the data model being +dnl used, and that on the other hand is only actually used when interfacing +dnl the X/Open sockets provided in the xnet library. + +AC_DEFUN([CARES_CONFIGURE_ARES_SOCKLEN_T], [ + AC_REQUIRE([CARES_INCLUDES_WS2TCPIP])dnl + AC_REQUIRE([CARES_INCLUDES_SYS_SOCKET])dnl + AC_REQUIRE([CARES_PREPROCESS_CALLCONV])dnl + # + AC_MSG_CHECKING([for ares_socklen_t data type]) + cares_typeof_ares_socklen_t="unknown" + for arg1 in int SOCKET; do + for arg2 in 'struct sockaddr' void; do + for t in socklen_t int size_t 'unsigned int' long 'unsigned long' void; do + if test "$cares_typeof_ares_socklen_t" = "unknown"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_ws2tcpip + $cares_includes_sys_socket + $cares_preprocess_callconv + extern int FUNCALLCONV getpeername($arg1, $arg2 *, $t *); + ]],[[ + $t *lenptr = 0; + if(0 != getpeername(0, 0, lenptr)) + return 1; + ]]) + ],[ + cares_typeof_ares_socklen_t="$t" + ]) + fi + done + done + done + for t in socklen_t int; do + if test "$cares_typeof_ares_socklen_t" = "void"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_sys_socket + typedef $t ares_socklen_t; + ]],[[ + ares_socklen_t dummy; + ]]) + ],[ + cares_typeof_ares_socklen_t="$t" + ]) + fi + done + AC_MSG_RESULT([$cares_typeof_ares_socklen_t]) + if test "$cares_typeof_ares_socklen_t" = "void" || + test "$cares_typeof_ares_socklen_t" = "unknown"; then + AC_MSG_ERROR([cannot find data type for ares_socklen_t.]) + fi + # + AC_MSG_CHECKING([size of ares_socklen_t]) + cares_sizeof_ares_socklen_t="unknown" + cares_pull_headers_socklen_t="unknown" + if test "$ac_cv_header_ws2tcpip_h" = "yes"; then + tst_pull_header_checks='none ws2tcpip' + tst_size_checks='4' + else + tst_pull_header_checks='none systypes syssocket' + tst_size_checks='4 8 2' + fi + for tst_size in $tst_size_checks; do + for tst_pull_headers in $tst_pull_header_checks; do + if test "$cares_sizeof_ares_socklen_t" = "unknown"; then + case $tst_pull_headers in + ws2tcpip) + tmp_includes="$cares_includes_ws2tcpip" + ;; + systypes) + tmp_includes="$cares_includes_sys_types" + ;; + syssocket) + tmp_includes="$cares_includes_sys_socket" + ;; + *) + tmp_includes="" + ;; + esac + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $tmp_includes + typedef $cares_typeof_ares_socklen_t ares_socklen_t; + typedef char dummy_arr[sizeof(ares_socklen_t) == $tst_size ? 1 : -1]; + ]],[[ + ares_socklen_t dummy; + ]]) + ],[ + cares_sizeof_ares_socklen_t="$tst_size" + cares_pull_headers_socklen_t="$tst_pull_headers" + ]) + fi + done + done + AC_MSG_RESULT([$cares_sizeof_ares_socklen_t]) + if test "$cares_sizeof_ares_socklen_t" = "unknown"; then + AC_MSG_ERROR([cannot find out size of ares_socklen_t.]) + fi + # + case $cares_pull_headers_socklen_t in + ws2tcpip) + CARES_DEFINE_UNQUOTED([CARES_PULL_WS2TCPIP_H]) + ;; + systypes) + CARES_DEFINE_UNQUOTED([CARES_PULL_SYS_TYPES_H]) + ;; + syssocket) + CARES_DEFINE_UNQUOTED([CARES_PULL_SYS_TYPES_H]) + CARES_DEFINE_UNQUOTED([CARES_PULL_SYS_SOCKET_H]) + ;; + esac + CARES_DEFINE_UNQUOTED([CARES_TYPEOF_ARES_SOCKLEN_T], [$cares_typeof_ares_socklen_t]) + CARES_DEFINE_UNQUOTED([CARES_SIZEOF_ARES_SOCKLEN_T], [$cares_sizeof_ares_socklen_t]) +]) + + +dnl This macro determines if the specified struct exists in the specified file +dnl Syntax: +dnl CARES_CHECK_STRUCT(headers, struct name, if found, [if not found]) + +AC_DEFUN([CARES_CHECK_STRUCT], [ + AC_MSG_CHECKING([for struct $2]) + AC_TRY_COMPILE([$1], + [ + struct $2 struct_instance; + ], ac_struct="yes", ac_found="no") + if test "$ac_struct" = "yes" ; then + AC_MSG_RESULT(yes) + $3 + else + AC_MSG_RESULT(no) + $4 + fi +]) + +dnl This macro determines if the specified constant exists in the specified file +dnl Syntax: +dnl CARES_CHECK_CONSTANT(headers, constant name, if found, [if not found]) + +AC_DEFUN([CARES_CHECK_CONSTANT], [ + AC_MSG_CHECKING([for $2]) + AC_EGREP_CPP(VARIABLEWASDEFINED, + [ + $1 + + #ifdef $2 + VARIABLEWASDEFINED + #else + NJET + #endif + ], ac_constant="yes", ac_constant="no" + ) + if test "$ac_constant" = "yes" ; then + AC_MSG_RESULT(yes) + $3 + else + AC_MSG_RESULT(no) + $4 + fi +]) + diff --git a/aclocal.m4 b/aclocal.m4 new file mode 100644 index 0000000..8600666 --- /dev/null +++ b/aclocal.m4 @@ -0,0 +1,932 @@ +# generated automatically by aclocal 1.9.6 -*- Autoconf -*- + +# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, +# 2005 Free Software Foundation, Inc. +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +# Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc. +# +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# AM_AUTOMAKE_VERSION(VERSION) +# ---------------------------- +# Automake X.Y traces this macro to ensure aclocal.m4 has been +# generated from the m4 files accompanying Automake X.Y. +AC_DEFUN([AM_AUTOMAKE_VERSION], [am__api_version="1.9"]) + +# AM_SET_CURRENT_AUTOMAKE_VERSION +# ------------------------------- +# Call AM_AUTOMAKE_VERSION so it can be traced. +# This function is AC_REQUIREd by AC_INIT_AUTOMAKE. +AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION], + [AM_AUTOMAKE_VERSION([1.9.6])]) + +# AM_AUX_DIR_EXPAND -*- Autoconf -*- + +# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc. +# +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets +# $ac_aux_dir to `$srcdir/foo'. In other projects, it is set to +# `$srcdir', `$srcdir/..', or `$srcdir/../..'. +# +# Of course, Automake must honor this variable whenever it calls a +# tool from the auxiliary directory. The problem is that $srcdir (and +# therefore $ac_aux_dir as well) can be either absolute or relative, +# depending on how configure is run. This is pretty annoying, since +# it makes $ac_aux_dir quite unusable in subdirectories: in the top +# source directory, any form will work fine, but in subdirectories a +# relative path needs to be adjusted first. +# +# $ac_aux_dir/missing +# fails when called from a subdirectory if $ac_aux_dir is relative +# $top_srcdir/$ac_aux_dir/missing +# fails if $ac_aux_dir is absolute, +# fails when called from a subdirectory in a VPATH build with +# a relative $ac_aux_dir +# +# The reason of the latter failure is that $top_srcdir and $ac_aux_dir +# are both prefixed by $srcdir. 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Presently that only means defining a flag for this option. +AC_DEFUN([_AM_SET_OPTION], +[m4_define(_AM_MANGLE_OPTION([$1]), 1)]) + +# _AM_SET_OPTIONS(OPTIONS) +# ---------------------------------- +# OPTIONS is a space-separated list of Automake options. +AC_DEFUN([_AM_SET_OPTIONS], +[AC_FOREACH([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])]) + +# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET]) +# ------------------------------------------- +# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise. +AC_DEFUN([_AM_IF_OPTION], +[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])]) + +# Check to make sure that the build environment is sane. -*- Autoconf -*- + +# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005 +# Free Software Foundation, Inc. +# +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# serial 4 + +# AM_SANITY_CHECK +# --------------- +AC_DEFUN([AM_SANITY_CHECK], +[AC_MSG_CHECKING([whether build environment is sane]) +# Just in case +sleep 1 +echo timestamp > conftest.file +# Do `set' in a subshell so we don't clobber the current shell's +# arguments. Must try -L first in case configure is actually a +# symlink; some systems play weird games with the mod time of symlinks +# (eg FreeBSD returns the mod time of the symlink's containing +# directory). +if ( + set X `ls -Lt $srcdir/configure conftest.file 2> /dev/null` + if test "$[*]" = "X"; then + # -L didn't work. + set X `ls -t $srcdir/configure conftest.file` + fi + rm -f conftest.file + if test "$[*]" != "X $srcdir/configure conftest.file" \ + && test "$[*]" != "X conftest.file $srcdir/configure"; then + + # If neither matched, then we have a broken ls. This can happen + # if, for instance, CONFIG_SHELL is bash and it inherits a + # broken ls alias from the environment. This has actually + # happened. Such a system could not be considered "sane". + AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken +alias in your environment]) + fi + + test "$[2]" = conftest.file + ) +then + # Ok. + : +else + AC_MSG_ERROR([newly created file is older than distributed files! +Check your system clock]) +fi +AC_MSG_RESULT(yes)]) + +# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc. +# +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# AM_PROG_INSTALL_STRIP +# --------------------- +# One issue with vendor `install' (even GNU) is that you can't +# specify the program used to strip binaries. This is especially +# annoying in cross-compiling environments, where the build's strip +# is unlikely to handle the host's binaries. +# Fortunately install-sh will honor a STRIPPROG variable, so we +# always use install-sh in `make install-strip', and initialize +# STRIPPROG with the value of the STRIP variable (set by the user). +AC_DEFUN([AM_PROG_INSTALL_STRIP], +[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl +# Installed binaries are usually stripped using `strip' when the user +# run `make install-strip'. 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We just wanted to have am__tar + # and am__untar set. + test -n "${am_cv_prog_tar_$1}" && break + + # tar/untar a dummy directory, and stop if the command works + rm -rf conftest.dir + mkdir conftest.dir + echo GrepMe > conftest.dir/file + AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar]) + rm -rf conftest.dir + if test -s conftest.tar; then + AM_RUN_LOG([$am__untar <conftest.tar]) + grep GrepMe conftest.dir/file >/dev/null 2>&1 && break + fi +done +rm -rf conftest.dir + +AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool]) +AC_MSG_RESULT([$am_cv_prog_tar_$1])]) +AC_SUBST([am__tar]) +AC_SUBST([am__untar]) +]) # _AM_PROG_TAR + +m4_include([m4/cares-compilers.m4]) +m4_include([m4/cares-confopts.m4]) +m4_include([m4/cares-functions.m4]) +m4_include([m4/cares-override.m4]) +m4_include([m4/cares-reentrant.m4]) +m4_include([m4/cares-system.m4]) +m4_include([m4/libtool.m4]) +m4_include([m4/ltoptions.m4]) +m4_include([m4/ltsugar.m4]) +m4_include([m4/ltversion.m4]) +m4_include([m4/lt~obsolete.m4]) +m4_include([m4/xc-translit.m4]) +m4_include([acinclude.m4]) diff --git a/acountry.1 b/acountry.1 new file mode 100644 index 0000000..74c4e34 --- /dev/null +++ b/acountry.1 @@ -0,0 +1,53 @@ +.TH ACOUNTRY "1" "April 2011" "c-ares utilities" +.SH NAME +acountry \- print the country where an IPv4 address or host is located +.SH SYNOPSIS +.B acountry +[\fIOPTION\fR]... \fIHOST\fR... +.SH DESCRIPTION +.PP +.\" Add any additional description here +.PP +Print the country where HOST (an IPv4 address or hostname) is located, +using the countries.nerd.dk DNS domain to identify the country. +.PP +This utility comes with the \fBc\-ares\fR asynchronous resolver library. +.SH OPTIONS +.TP +\fB\-d\fR +Print some extra debugging output. +.TP +\fB\-h\fR, \fB\-\-help\fR +Display this help and exit. +.TP +\fB\-v\fR +Be more verbose. Print extra information. +.SH "REPORTING BUGS" +Report bugs to the c-ares mailing list: +\fBhttp://cool.haxx.se/mailman/listinfo/c-ares\fR +.SH "SEE ALSO" +.PP +adig(1), ahost(1). +.PP +The DNSBL countries.nerd.dk +.br +\fBhttp://countries.nerd.dk/\fR +.SH COPYRIGHT +This utility is based on code/ideas contained in sofware written by Greg Hudson (ares) +carrying the following notice: +.br +Copyright 1998 by the Massachusetts Institute of Technology. +.br +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +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. +.br +No further copyright claims are being made by the author(s) of this utility. +.SH AUTHOR +Gisle Vanem diff --git a/acountry.c b/acountry.c new file mode 100644 index 0000000..d989018 --- /dev/null +++ b/acountry.c @@ -0,0 +1,628 @@ +/* + * + * IP-address/hostname to country converter. + * + * Problem; you want to know where IP a.b.c.d is located. + * + * Use ares_gethostbyname ("d.c.b.a.zz.countries.nerd.dk") + * and get the CNAME (host->h_name). Result will be: + * CNAME = zz<CC>.countries.nerd.dk with address 127.0.x.y (ver 1) or + * CNAME = <a.b.c.d>.zz.countries.nerd.dk with address 127.0.x.y (ver 2) + * + * The 2 letter country code is in <CC> and the ISO-3166 country + * number is in x.y (number = x*256 + y). Version 2 of the protocol is missing + * the <CC> number. + * + * Ref: http://countries.nerd.dk/more.html + * + * Written by G. Vanem <gvanem@broadpark.no> 2006, 2007 + * + * NB! This program may not be big-endian aware. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" + +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +#include <string.h> +#include <ctype.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#ifdef HAVE_STRINGS_H +#include <strings.h> +#endif + +#if defined(WIN32) && !defined(WATT32) + #include <winsock.h> +#else + #include <sys/socket.h> + #include <arpa/inet.h> + #include <netinet/in.h> + #include <netdb.h> +#endif + +#include "ares.h" +#include "ares_getopt.h" +#include "inet_net_pton.h" +#include "inet_ntop.h" +#include "ares_nowarn.h" + +#ifndef HAVE_STRDUP +# include "ares_strdup.h" +# define strdup(ptr) ares_strdup(ptr) +#endif + +#ifndef HAVE_STRCASECMP +# include "ares_strcasecmp.h" +# define strcasecmp(p1,p2) ares_strcasecmp(p1,p2) +#endif + +#ifndef HAVE_STRNCASECMP +# include "ares_strcasecmp.h" +# define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n) +#endif + +#ifndef INADDR_NONE +#define INADDR_NONE 0xffffffff +#endif + +static const char *usage = "acountry [-vh?] {host|addr} ...\n"; +static const char nerd_fmt[] = "%u.%u.%u.%u.zz.countries.nerd.dk"; +static const char *nerd_ver1 = nerd_fmt + 14; +static const char *nerd_ver2 = nerd_fmt + 11; +static int verbose = 0; + +#define TRACE(fmt) do { \ + if (verbose > 0) \ + printf fmt ; \ + } while (0) + +static void wait_ares(ares_channel channel); +static void callback(void *arg, int status, int timeouts, struct hostent *host); +static void callback2(void *arg, int status, int timeouts, struct hostent *host); +static void find_country_from_cname(const char *cname, struct in_addr addr); + +static void Abort(const char *fmt, ...) +{ + va_list args; + va_start(args, fmt); + vfprintf(stderr, fmt, args); + va_end(args); + exit(1); +} + +int main(int argc, char **argv) +{ + ares_channel channel; + int ch, status; + +#if defined(WIN32) && !defined(WATT32) + WORD wVersionRequested = MAKEWORD(USE_WINSOCK,USE_WINSOCK); + WSADATA wsaData; + WSAStartup(wVersionRequested, &wsaData); +#endif + + status = ares_library_init(ARES_LIB_INIT_ALL); + if (status != ARES_SUCCESS) + { + fprintf(stderr, "ares_library_init: %s\n", ares_strerror(status)); + return 1; + } + + while ((ch = ares_getopt(argc, argv, "dvh?")) != -1) + switch (ch) + { + case 'd': +#ifdef WATT32 + dbug_init(); +#endif + break; + case 'v': + verbose++; + break; + case 'h': + case '?': + default: + Abort(usage); + } + + argc -= optind; + argv += optind; + if (argc < 1) + Abort(usage); + + status = ares_init(&channel); + if (status != ARES_SUCCESS) + { + fprintf(stderr, "ares_init: %s\n", ares_strerror(status)); + return 1; + } + + /* Initiate the queries, one per command-line argument. */ + for ( ; *argv; argv++) + { + struct in_addr addr; + char buf[100]; + + /* If this fails, assume '*argv' is a host-name that + * must be resolved first + */ + if (ares_inet_pton(AF_INET, *argv, &addr) != 1) + { + ares_gethostbyname(channel, *argv, AF_INET, callback2, &addr); + wait_ares(channel); + if (addr.s_addr == INADDR_NONE) + { + printf("Failed to lookup %s\n", *argv); + continue; + } + } + + sprintf(buf, nerd_fmt, + (unsigned int)(addr.s_addr >> 24), + (unsigned int)((addr.s_addr >> 16) & 255), + (unsigned int)((addr.s_addr >> 8) & 255), + (unsigned int)(addr.s_addr & 255)); + TRACE(("Looking up %s...", buf)); + fflush(stdout); + ares_gethostbyname(channel, buf, AF_INET, callback, buf); + } + + wait_ares(channel); + ares_destroy(channel); + + ares_library_cleanup(); + +#if defined(WIN32) && !defined(WATT32) + WSACleanup(); +#endif + + return 0; +} + +/* + * Wait for the queries to complete. + */ +static void wait_ares(ares_channel channel) +{ + for (;;) + { + struct timeval *tvp, tv; + fd_set read_fds, write_fds; + int nfds; + + FD_ZERO(&read_fds); + FD_ZERO(&write_fds); + nfds = ares_fds(channel, &read_fds, &write_fds); + if (nfds == 0) + break; + tvp = ares_timeout(channel, NULL, &tv); + select(nfds, &read_fds, &write_fds, NULL, tvp); + ares_process(channel, &read_fds, &write_fds); + } +} + +/* + * This is the callback used when we have the IP-address of interest. + * Extract the CNAME and figure out the country-code from it. + */ +static void callback(void *arg, int status, int timeouts, struct hostent *host) +{ + const char *name = (const char*)arg; + const char *cname; + char buf[20]; + + (void)timeouts; + + if (!host || status != ARES_SUCCESS) + { + printf("Failed to lookup %s: %s\n", name, ares_strerror(status)); + return; + } + + TRACE(("\nFound address %s, name %s\n", + ares_inet_ntop(AF_INET,(const char*)host->h_addr,buf,sizeof(buf)), + host->h_name)); + + cname = host->h_name; /* CNAME gets put here */ + if (!cname) + printf("Failed to get CNAME for %s\n", name); + else + find_country_from_cname(cname, *(struct in_addr*)host->h_addr); +} + +/* + * This is the callback used to obtain the IP-address of the host of interest. + */ +static void callback2(void *arg, int status, int timeouts, struct hostent *host) +{ + struct in_addr *addr = (struct in_addr*) arg; + + (void)timeouts; + if (!host || status != ARES_SUCCESS) + memset(addr, INADDR_NONE, sizeof(*addr)); + else + memcpy(addr, host->h_addr, sizeof(*addr)); +} + +struct search_list { + int country_number; /* ISO-3166 country number */ + char short_name[3]; /* A2 short country code */ + const char *long_name; /* normal country name */ + }; + +static const struct search_list *list_lookup(int number, const struct search_list *list, int num) +{ + while (num > 0 && list->long_name) + { + if (list->country_number == number) + return (list); + num--; + list++; + } + return (NULL); +} + +/* + * Ref: ftp://ftp.ripe.net/iso3166-countrycodes.txt + */ +static const struct search_list country_list[] = { + { 4, "af", "Afghanistan" }, + { 248, "ax", "Åland Island" }, + { 8, "al", "Albania" }, + { 12, "dz", "Algeria" }, + { 16, "as", "American Samoa" }, + { 20, "ad", "Andorra" }, + { 24, "ao", "Angola" }, + { 660, "ai", "Anguilla" }, + { 10, "aq", "Antarctica" }, + { 28, "ag", "Antigua & Barbuda" }, + { 32, "ar", "Argentina" }, + { 51, "am", "Armenia" }, + { 533, "aw", "Aruba" }, + { 36, "au", "Australia" }, + { 40, "at", "Austria" }, + { 31, "az", "Azerbaijan" }, + { 44, "bs", "Bahamas" }, + { 48, "bh", "Bahrain" }, + { 50, "bd", "Bangladesh" }, + { 52, "bb", "Barbados" }, + { 112, "by", "Belarus" }, + { 56, "be", "Belgium" }, + { 84, "bz", "Belize" }, + { 204, "bj", "Benin" }, + { 60, "bm", "Bermuda" }, + { 64, "bt", "Bhutan" }, + { 68, "bo", "Bolivia" }, + { 70, "ba", "Bosnia & Herzegowina" }, + { 72, "bw", "Botswana" }, + { 74, "bv", "Bouvet Island" }, + { 76, "br", "Brazil" }, + { 86, "io", "British Indian Ocean Territory" }, + { 96, "bn", "Brunei Darussalam" }, + { 100, "bg", "Bulgaria" }, + { 854, "bf", "Burkina Faso" }, + { 108, "bi", "Burundi" }, + { 116, "kh", "Cambodia" }, + { 120, "cm", "Cameroon" }, + { 124, "ca", "Canada" }, + { 132, "cv", "Cape Verde" }, + { 136, "ky", "Cayman Islands" }, + { 140, "cf", "Central African Republic" }, + { 148, "td", "Chad" }, + { 152, "cl", "Chile" }, + { 156, "cn", "China" }, + { 162, "cx", "Christmas Island" }, + { 166, "cc", "Cocos Islands" }, + { 170, "co", "Colombia" }, + { 174, "km", "Comoros" }, + { 178, "cg", "Congo" }, + { 180, "cd", "Congo" }, + { 184, "ck", "Cook Islands" }, + { 188, "cr", "Costa Rica" }, + { 384, "ci", "Cote d'Ivoire" }, + { 191, "hr", "Croatia" }, + { 192, "cu", "Cuba" }, + { 196, "cy", "Cyprus" }, + { 203, "cz", "Czech Republic" }, + { 208, "dk", "Denmark" }, + { 262, "dj", "Djibouti" }, + { 212, "dm", "Dominica" }, + { 214, "do", "Dominican Republic" }, + { 218, "ec", "Ecuador" }, + { 818, "eg", "Egypt" }, + { 222, "sv", "El Salvador" }, + { 226, "gq", "Equatorial Guinea" }, + { 232, "er", "Eritrea" }, + { 233, "ee", "Estonia" }, + { 231, "et", "Ethiopia" }, + { 238, "fk", "Falkland Islands" }, + { 234, "fo", "Faroe Islands" }, + { 242, "fj", "Fiji" }, + { 246, "fi", "Finland" }, + { 250, "fr", "France" }, + { 249, "fx", "France, Metropolitan" }, + { 254, "gf", "French Guiana" }, + { 258, "pf", "French Polynesia" }, + { 260, "tf", "French Southern Territories" }, + { 266, "ga", "Gabon" }, + { 270, "gm", "Gambia" }, + { 268, "ge", "Georgia" }, + { 276, "de", "Germany" }, + { 288, "gh", "Ghana" }, + { 292, "gi", "Gibraltar" }, + { 300, "gr", "Greece" }, + { 304, "gl", "Greenland" }, + { 308, "gd", "Grenada" }, + { 312, "gp", "Guadeloupe" }, + { 316, "gu", "Guam" }, + { 320, "gt", "Guatemala" }, + { 324, "gn", "Guinea" }, + { 624, "gw", "Guinea-Bissau" }, + { 328, "gy", "Guyana" }, + { 332, "ht", "Haiti" }, + { 334, "hm", "Heard & Mc Donald Islands" }, + { 336, "va", "Vatican City" }, + { 340, "hn", "Honduras" }, + { 344, "hk", "Hong kong" }, + { 348, "hu", "Hungary" }, + { 352, "is", "Iceland" }, + { 356, "in", "India" }, + { 360, "id", "Indonesia" }, + { 364, "ir", "Iran" }, + { 368, "iq", "Iraq" }, + { 372, "ie", "Ireland" }, + { 376, "il", "Israel" }, + { 380, "it", "Italy" }, + { 388, "jm", "Jamaica" }, + { 392, "jp", "Japan" }, + { 400, "jo", "Jordan" }, + { 398, "kz", "Kazakhstan" }, + { 404, "ke", "Kenya" }, + { 296, "ki", "Kiribati" }, + { 408, "kp", "Korea (north)" }, + { 410, "kr", "Korea (south)" }, + { 414, "kw", "Kuwait" }, + { 417, "kg", "Kyrgyzstan" }, + { 418, "la", "Laos" }, + { 428, "lv", "Latvia" }, + { 422, "lb", "Lebanon" }, + { 426, "ls", "Lesotho" }, + { 430, "lr", "Liberia" }, + { 434, "ly", "Libya" }, + { 438, "li", "Liechtenstein" }, + { 440, "lt", "Lithuania" }, + { 442, "lu", "Luxembourg" }, + { 446, "mo", "Macao" }, + { 807, "mk", "Macedonia" }, + { 450, "mg", "Madagascar" }, + { 454, "mw", "Malawi" }, + { 458, "my", "Malaysia" }, + { 462, "mv", "Maldives" }, + { 466, "ml", "Mali" }, + { 470, "mt", "Malta" }, + { 584, "mh", "Marshall Islands" }, + { 474, "mq", "Martinique" }, + { 478, "mr", "Mauritania" }, + { 480, "mu", "Mauritius" }, + { 175, "yt", "Mayotte" }, + { 484, "mx", "Mexico" }, + { 583, "fm", "Micronesia" }, + { 498, "md", "Moldova" }, + { 492, "mc", "Monaco" }, + { 496, "mn", "Mongolia" }, + { 500, "ms", "Montserrat" }, + { 504, "ma", "Morocco" }, + { 508, "mz", "Mozambique" }, + { 104, "mm", "Myanmar" }, + { 516, "na", "Namibia" }, + { 520, "nr", "Nauru" }, + { 524, "np", "Nepal" }, + { 528, "nl", "Netherlands" }, + { 530, "an", "Netherlands Antilles" }, + { 540, "nc", "New Caledonia" }, + { 554, "nz", "New Zealand" }, + { 558, "ni", "Nicaragua" }, + { 562, "ne", "Niger" }, + { 566, "ng", "Nigeria" }, + { 570, "nu", "Niue" }, + { 574, "nf", "Norfolk Island" }, + { 580, "mp", "Northern Mariana Islands" }, + { 578, "no", "Norway" }, + { 512, "om", "Oman" }, + { 586, "pk", "Pakistan" }, + { 585, "pw", "Palau" }, + { 275, "ps", "Palestinian Territory" }, + { 591, "pa", "Panama" }, + { 598, "pg", "Papua New Guinea" }, + { 600, "py", "Paraguay" }, + { 604, "pe", "Peru" }, + { 608, "ph", "Philippines" }, + { 612, "pn", "Pitcairn" }, + { 616, "pl", "Poland" }, + { 620, "pt", "Portugal" }, + { 630, "pr", "Puerto Rico" }, + { 634, "qa", "Qatar" }, + { 638, "re", "Reunion" }, + { 642, "ro", "Romania" }, + { 643, "ru", "Russia" }, + { 646, "rw", "Rwanda" }, + { 659, "kn", "Saint Kitts & Nevis" }, + { 662, "lc", "Saint Lucia" }, + { 670, "vc", "Saint Vincent" }, + { 882, "ws", "Samoa" }, + { 674, "sm", "San Marino" }, + { 678, "st", "Sao Tome & Principe" }, + { 682, "sa", "Saudi Arabia" }, + { 686, "sn", "Senegal" }, + { 891, "cs", "Serbia and Montenegro" }, + { 690, "sc", "Seychelles" }, + { 694, "sl", "Sierra Leone" }, + { 702, "sg", "Singapore" }, + { 703, "sk", "Slovakia" }, + { 705, "si", "Slovenia" }, + { 90, "sb", "Solomon Islands" }, + { 706, "so", "Somalia" }, + { 710, "za", "South Africa" }, + { 239, "gs", "South Georgia" }, + { 724, "es", "Spain" }, + { 144, "lk", "Sri Lanka" }, + { 654, "sh", "St. Helena" }, + { 666, "pm", "St. Pierre & Miquelon" }, + { 736, "sd", "Sudan" }, + { 740, "sr", "Suriname" }, + { 744, "sj", "Svalbard & Jan Mayen Islands" }, + { 748, "sz", "Swaziland" }, + { 752, "se", "Sweden" }, + { 756, "ch", "Switzerland" }, + { 760, "sy", "Syrian Arab Republic" }, + { 626, "tl", "Timor-Leste" }, + { 158, "tw", "Taiwan" }, + { 762, "tj", "Tajikistan" }, + { 834, "tz", "Tanzania" }, + { 764, "th", "Thailand" }, + { 768, "tg", "Togo" }, + { 772, "tk", "Tokelau" }, + { 776, "to", "Tonga" }, + { 780, "tt", "Trinidad & Tobago" }, + { 788, "tn", "Tunisia" }, + { 792, "tr", "Turkey" }, + { 795, "tm", "Turkmenistan" }, + { 796, "tc", "Turks & Caicos Islands" }, + { 798, "tv", "Tuvalu" }, + { 800, "ug", "Uganda" }, + { 804, "ua", "Ukraine" }, + { 784, "ae", "United Arab Emirates" }, + { 826, "gb", "United Kingdom" }, + { 840, "us", "United States" }, + { 581, "um", "United States Minor Outlying Islands" }, + { 858, "uy", "Uruguay" }, + { 860, "uz", "Uzbekistan" }, + { 548, "vu", "Vanuatu" }, + { 862, "ve", "Venezuela" }, + { 704, "vn", "Vietnam" }, + { 92, "vg", "Virgin Islands (British)" }, + { 850, "vi", "Virgin Islands (US)" }, + { 876, "wf", "Wallis & Futuna Islands" }, + { 732, "eh", "Western Sahara" }, + { 887, "ye", "Yemen" }, + { 894, "zm", "Zambia" }, + { 716, "zw", "Zimbabwe" } + }; + +/* + * Check if start of 'str' is simply an IPv4 address. + */ +#define BYTE_OK(x) ((x) >= 0 && (x) <= 255) + +static int is_addr(char *str, char **end) +{ + int a0, a1, a2, a3, num, rc = 0, length = 0; + + num = sscanf(str,"%3d.%3d.%3d.%3d%n",&a0,&a1,&a2,&a3,&length); + if( (num == 4) && + BYTE_OK(a0) && BYTE_OK(a1) && BYTE_OK(a2) && BYTE_OK(a3) && + length >= (3+4)) + { + rc = 1; + *end = str + length; + } + return rc; +} + +/* + * Find the country-code and name from the CNAME. E.g.: + * version 1: CNAME = zzno.countries.nerd.dk with address 127.0.2.66 + * yields ccode_A" = "no" and cnumber 578 (2.66). + * version 2: CNAME = <a.b.c.d>.zz.countries.nerd.dk with address 127.0.2.66 + * yields cnumber 578 (2.66). ccode_A is ""; + */ +static void find_country_from_cname(const char *cname, struct in_addr addr) +{ + const struct search_list *country; + char ccode_A2[3], *ccopy, *dot_4; + int cnumber, z0, z1, ver_1, ver_2; + unsigned long ip; + + ip = ntohl(addr.s_addr); + z0 = TOLOWER(cname[0]); + z1 = TOLOWER(cname[1]); + ccopy = strdup(cname); + dot_4 = NULL; + + ver_1 = (z0 == 'z' && z1 == 'z' && !strcasecmp(cname+4,nerd_ver1)); + ver_2 = (is_addr(ccopy,&dot_4) && !strcasecmp(dot_4,nerd_ver2)); + + if (ver_1) + { + const char *dot = strchr(cname, '.'); + if ((z0 != 'z' && z1 != 'z') || dot != cname+4) + { + printf("Unexpected CNAME %s (ver_1)\n", cname); + return; + } + } + else if (ver_2) + { + z0 = TOLOWER(dot_4[1]); + z1 = TOLOWER(dot_4[2]); + if (z0 != 'z' && z1 != 'z') + { + printf("Unexpected CNAME %s (ver_2)\n", cname); + return; + } + } + else + { + printf("Unexpected CNAME %s (ver?)\n", cname); + return; + } + + if (ver_1) + { + ccode_A2[0] = (char)TOLOWER(cname[2]); + ccode_A2[1] = (char)TOLOWER(cname[3]); + ccode_A2[2] = '\0'; + } + else + ccode_A2[0] = '\0'; + + cnumber = ip & 0xFFFF; + + TRACE(("Found country-code `%s', number %d\n", + ver_1 ? ccode_A2 : "<n/a>", cnumber)); + + country = list_lookup(cnumber, country_list, + sizeof(country_list) / sizeof(country_list[0])); + if (!country) + printf("Name for country-number %d not found.\n", cnumber); + else + { + if (ver_1) + { + if ((country->short_name[0] != ccode_A2[0]) || + (country->short_name[1] != ccode_A2[1]) || + (country->short_name[2] != ccode_A2[2])) + printf("short-name mismatch; %s vs %s\n", + country->short_name, ccode_A2); + } + printf("%s (%s), number %d.\n", + country->long_name, country->short_name, cnumber); + } + free(ccopy); +} + @@ -0,0 +1,71 @@ +.TH ADIG "1" "April 2011" "c-ares utilities" +.SH NAME +adig \- print information collected from Domain Name System (DNS) servers +.SH SYNOPSIS +.B adig +[\fIOPTION\fR]... \fINAME\fR... +.SH DESCRIPTION +.PP +.\" Add any additional description here +.PP +Send queries to DNS servers about \fINAME\fR and print received +information, where \fINAME\fR is a valid DNS name (e.g. www.example.com, +1.2.3.10.in-addr.arpa). +.PP +This utility comes with the \fBc\-ares\fR asynchronous resolver library. +.SH OPTIONS +.TP +\fB\-c\fR class +Set the query class. +Possible values for class are +NY, CHAOS, HS, IN (default). +.TP +\fB\-d\fR +Print some extra debugging output. +.TP +\fB\-f\fR flag +Add a flag. +Possible values for flag are +igntc, noaliases, norecurse, primary, stayopen, usevc. +.TP +\fB\-h\fR, \fB\-\-help\fR +Display this help and exit. +.TP +\fB\-T\fR port +Use specified TCP port to connect to DNS server. +.TP +\fB\-s\fR server +Connect to specified DNS server, instead of the system's default one(s). +.TP +\fB\-t\fR type +Query records of specified type. +Possible values for type are +A (default), AAAA, AFSDB, ANY, AXFR, CNAME, GPOS, HINFO, ISDN, KEY, LOC, MAILA, +MAILB, MB, MD, MF, MG, MINFO, MR, MX, NAPTR, NS, NSAP, NSAP_PTR, NULL, +PTR, PX, RP, RT, SIG, SOA, SRV, TXT, WKS, X25, +.TP +\fB\-U\fR port +Use specified UDP port to connect to DNS server. +.SH "REPORTING BUGS" +Report bugs to the c-ares mailing list: +\fBhttp://cool.haxx.se/mailman/listinfo/c-ares\fR +.SH "SEE ALSO" +.PP +acountry(1), ahost(1). +.SH COPYRIGHT +This utility is based on code/ideas contained in sofware written by Greg Hudson (ares) +carrying the following notice: +.br +Copyright 1998 by the Massachusetts Institute of Technology. +.br +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +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. +.br +No further copyright claims are being made by the author(s) of this utility. @@ -0,0 +1,843 @@ +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_SYS_TIME_H +# include <sys/time.h> +#endif +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> + +#include "ares.h" +#include "ares_dns.h" +#include "inet_ntop.h" +#include "inet_net_pton.h" +#include "ares_getopt.h" +#include "ares_nowarn.h" + +#ifndef HAVE_STRDUP +# include "ares_strdup.h" +# define strdup(ptr) ares_strdup(ptr) +#endif + +#ifndef HAVE_STRCASECMP +# include "ares_strcasecmp.h" +# define strcasecmp(p1,p2) ares_strcasecmp(p1,p2) +#endif + +#ifndef HAVE_STRNCASECMP +# include "ares_strcasecmp.h" +# define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n) +#endif + +#ifdef WATT32 +#undef WIN32 /* Redefined in MingW headers */ +#endif + +#ifndef T_SRV +# define T_SRV 33 /* Server selection */ +#endif +#ifndef T_NAPTR +# define T_NAPTR 35 /* Naming authority pointer */ +#endif +#ifndef T_DS +# define T_DS 43 /* Delegation Signer (RFC4034) */ +#endif +#ifndef T_SSHFP +# define T_SSHFP 44 /* SSH Key Fingerprint (RFC4255) */ +#endif +#ifndef T_RRSIG +# define T_RRSIG 46 /* Resource Record Signature (RFC4034) */ +#endif +#ifndef T_NSEC +# define T_NSEC 47 /* Next Secure (RFC4034) */ +#endif +#ifndef T_DNSKEY +# define T_DNSKEY 48 /* DNS Public Key (RFC4034) */ +#endif + +struct nv { + const char *name; + int value; +}; + +static const struct nv flags[] = { + { "usevc", ARES_FLAG_USEVC }, + { "primary", ARES_FLAG_PRIMARY }, + { "igntc", ARES_FLAG_IGNTC }, + { "norecurse", ARES_FLAG_NORECURSE }, + { "stayopen", ARES_FLAG_STAYOPEN }, + { "noaliases", ARES_FLAG_NOALIASES } +}; +static const int nflags = sizeof(flags) / sizeof(flags[0]); + +static const struct nv classes[] = { + { "IN", C_IN }, + { "CHAOS", C_CHAOS }, + { "HS", C_HS }, + { "ANY", C_ANY } +}; +static const int nclasses = sizeof(classes) / sizeof(classes[0]); + +static const struct nv types[] = { + { "A", T_A }, + { "NS", T_NS }, + { "MD", T_MD }, + { "MF", T_MF }, + { "CNAME", T_CNAME }, + { "SOA", T_SOA }, + { "MB", T_MB }, + { "MG", T_MG }, + { "MR", T_MR }, + { "NULL", T_NULL }, + { "WKS", T_WKS }, + { "PTR", T_PTR }, + { "HINFO", T_HINFO }, + { "MINFO", T_MINFO }, + { "MX", T_MX }, + { "TXT", T_TXT }, + { "RP", T_RP }, + { "AFSDB", T_AFSDB }, + { "X25", T_X25 }, + { "ISDN", T_ISDN }, + { "RT", T_RT }, + { "NSAP", T_NSAP }, + { "NSAP_PTR", T_NSAP_PTR }, + { "SIG", T_SIG }, + { "KEY", T_KEY }, + { "PX", T_PX }, + { "GPOS", T_GPOS }, + { "AAAA", T_AAAA }, + { "LOC", T_LOC }, + { "SRV", T_SRV }, + { "AXFR", T_AXFR }, + { "MAILB", T_MAILB }, + { "MAILA", T_MAILA }, + { "NAPTR", T_NAPTR }, + { "DS", T_DS }, + { "SSHFP", T_SSHFP }, + { "RRSIG", T_RRSIG }, + { "NSEC", T_NSEC }, + { "DNSKEY", T_DNSKEY }, + { "ANY", T_ANY } +}; +static const int ntypes = sizeof(types) / sizeof(types[0]); + +static const char *opcodes[] = { + "QUERY", "IQUERY", "STATUS", "(reserved)", "NOTIFY", + "(unknown)", "(unknown)", "(unknown)", "(unknown)", + "UPDATEA", "UPDATED", "UPDATEDA", "UPDATEM", "UPDATEMA", + "ZONEINIT", "ZONEREF" +}; + +static const char *rcodes[] = { + "NOERROR", "FORMERR", "SERVFAIL", "NXDOMAIN", "NOTIMP", "REFUSED", + "(unknown)", "(unknown)", "(unknown)", "(unknown)", "(unknown)", + "(unknown)", "(unknown)", "(unknown)", "(unknown)", "NOCHANGE" +}; + +static void callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen); +static const unsigned char *display_question(const unsigned char *aptr, + const unsigned char *abuf, + int alen); +static const unsigned char *display_rr(const unsigned char *aptr, + const unsigned char *abuf, int alen); +static const char *type_name(int type); +static const char *class_name(int dnsclass); +static void usage(void); +static void destroy_addr_list(struct ares_addr_node *head); +static void append_addr_list(struct ares_addr_node **head, + struct ares_addr_node *node); + +int main(int argc, char **argv) +{ + ares_channel channel; + int c, i, optmask = ARES_OPT_FLAGS, dnsclass = C_IN, type = T_A; + int status, nfds, count; + struct ares_options options; + struct hostent *hostent; + fd_set read_fds, write_fds; + struct timeval *tvp, tv; + struct ares_addr_node *srvr, *servers = NULL; + +#ifdef USE_WINSOCK + WORD wVersionRequested = MAKEWORD(USE_WINSOCK,USE_WINSOCK); + WSADATA wsaData; + WSAStartup(wVersionRequested, &wsaData); +#endif + + status = ares_library_init(ARES_LIB_INIT_ALL); + if (status != ARES_SUCCESS) + { + fprintf(stderr, "ares_library_init: %s\n", ares_strerror(status)); + return 1; + } + + options.flags = ARES_FLAG_NOCHECKRESP; + options.servers = NULL; + options.nservers = 0; + while ((c = ares_getopt(argc, argv, "df:s:c:t:T:U:")) != -1) + { + switch (c) + { + case 'd': +#ifdef WATT32 + dbug_init(); +#endif + break; + + case 'f': + /* Add a flag. */ + for (i = 0; i < nflags; i++) + { + if (strcmp(flags[i].name, optarg) == 0) + break; + } + if (i < nflags) + options.flags |= flags[i].value; + else + usage(); + break; + + case 's': + /* User-specified name servers override default ones. */ + srvr = malloc(sizeof(struct ares_addr_node)); + if (!srvr) + { + fprintf(stderr, "Out of memory!\n"); + destroy_addr_list(servers); + return 1; + } + append_addr_list(&servers, srvr); + if (ares_inet_pton(AF_INET, optarg, &srvr->addr.addr4) > 0) + srvr->family = AF_INET; + else if (ares_inet_pton(AF_INET6, optarg, &srvr->addr.addr6) > 0) + srvr->family = AF_INET6; + else + { + hostent = gethostbyname(optarg); + if (!hostent) + { + fprintf(stderr, "adig: server %s not found.\n", optarg); + destroy_addr_list(servers); + return 1; + } + switch (hostent->h_addrtype) + { + case AF_INET: + srvr->family = AF_INET; + memcpy(&srvr->addr.addr4, hostent->h_addr, + sizeof(srvr->addr.addr4)); + break; + case AF_INET6: + srvr->family = AF_INET6; + memcpy(&srvr->addr.addr6, hostent->h_addr, + sizeof(srvr->addr.addr6)); + break; + default: + fprintf(stderr, + "adig: server %s unsupported address family.\n", optarg); + destroy_addr_list(servers); + return 1; + } + } + /* Notice that calling ares_init_options() without servers in the + * options struct and with ARES_OPT_SERVERS set simultaneously in + * the options mask, results in an initialization with no servers. + * When alternative name servers have been specified these are set + * later calling ares_set_servers() overriding any existing server + * configuration. To prevent initial configuration with default + * servers that will be discarded later, ARES_OPT_SERVERS is set. + * If this flag is not set here the result shall be the same but + * ares_init_options() will do needless work. */ + optmask |= ARES_OPT_SERVERS; + break; + + case 'c': + /* Set the query class. */ + for (i = 0; i < nclasses; i++) + { + if (strcasecmp(classes[i].name, optarg) == 0) + break; + } + if (i < nclasses) + dnsclass = classes[i].value; + else + usage(); + break; + + case 't': + /* Set the query type. */ + for (i = 0; i < ntypes; i++) + { + if (strcasecmp(types[i].name, optarg) == 0) + break; + } + if (i < ntypes) + type = types[i].value; + else + usage(); + break; + + case 'T': + /* Set the TCP port number. */ + if (!ISDIGIT(*optarg)) + usage(); + options.tcp_port = (unsigned short)strtol(optarg, NULL, 0); + optmask |= ARES_OPT_TCP_PORT; + break; + + case 'U': + /* Set the UDP port number. */ + if (!ISDIGIT(*optarg)) + usage(); + options.udp_port = (unsigned short)strtol(optarg, NULL, 0); + optmask |= ARES_OPT_UDP_PORT; + break; + } + } + argc -= optind; + argv += optind; + if (argc == 0) + usage(); + + status = ares_init_options(&channel, &options, optmask); + + if (status != ARES_SUCCESS) + { + fprintf(stderr, "ares_init_options: %s\n", + ares_strerror(status)); + return 1; + } + + if(servers) + { + status = ares_set_servers(channel, servers); + destroy_addr_list(servers); + if (status != ARES_SUCCESS) + { + fprintf(stderr, "ares_init_options: %s\n", + ares_strerror(status)); + return 1; + } + } + + /* Initiate the queries, one per command-line argument. If there is + * only one query to do, supply NULL as the callback argument; + * otherwise, supply the query name as an argument so we can + * distinguish responses for the user when printing them out. + */ + if (argc == 1) + ares_query(channel, *argv, dnsclass, type, callback, (char *) NULL); + else + { + for (; *argv; argv++) + ares_query(channel, *argv, dnsclass, type, callback, *argv); + } + + /* Wait for all queries to complete. */ + for (;;) + { + FD_ZERO(&read_fds); + FD_ZERO(&write_fds); + nfds = ares_fds(channel, &read_fds, &write_fds); + if (nfds == 0) + break; + tvp = ares_timeout(channel, NULL, &tv); + count = select(nfds, &read_fds, &write_fds, NULL, tvp); + if (count < 0 && SOCKERRNO != EINVAL) + { + perror("select"); + return 1; + } + ares_process(channel, &read_fds, &write_fds); + } + + ares_destroy(channel); + + ares_library_cleanup(); + +#ifdef USE_WINSOCK + WSACleanup(); +#endif + + return 0; +} + +static void callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen) +{ + char *name = (char *) arg; + int id, qr, opcode, aa, tc, rd, ra, rcode; + unsigned int qdcount, ancount, nscount, arcount, i; + const unsigned char *aptr; + + (void) timeouts; + + /* Display the query name if given. */ + if (name) + printf("Answer for query %s:\n", name); + + /* Display an error message if there was an error, but only stop if + * we actually didn't get an answer buffer. + */ + if (status != ARES_SUCCESS) + { + printf("%s\n", ares_strerror(status)); + if (!abuf) + return; + } + + /* Won't happen, but check anyway, for safety. */ + if (alen < HFIXEDSZ) + return; + + /* Parse the answer header. */ + id = DNS_HEADER_QID(abuf); + qr = DNS_HEADER_QR(abuf); + opcode = DNS_HEADER_OPCODE(abuf); + aa = DNS_HEADER_AA(abuf); + tc = DNS_HEADER_TC(abuf); + rd = DNS_HEADER_RD(abuf); + ra = DNS_HEADER_RA(abuf); + rcode = DNS_HEADER_RCODE(abuf); + qdcount = DNS_HEADER_QDCOUNT(abuf); + ancount = DNS_HEADER_ANCOUNT(abuf); + nscount = DNS_HEADER_NSCOUNT(abuf); + arcount = DNS_HEADER_ARCOUNT(abuf); + + /* Display the answer header. */ + printf("id: %d\n", id); + printf("flags: %s%s%s%s%s\n", + qr ? "qr " : "", + aa ? "aa " : "", + tc ? "tc " : "", + rd ? "rd " : "", + ra ? "ra " : ""); + printf("opcode: %s\n", opcodes[opcode]); + printf("rcode: %s\n", rcodes[rcode]); + + /* Display the questions. */ + printf("Questions:\n"); + aptr = abuf + HFIXEDSZ; + for (i = 0; i < qdcount; i++) + { + aptr = display_question(aptr, abuf, alen); + if (aptr == NULL) + return; + } + + /* Display the answers. */ + printf("Answers:\n"); + for (i = 0; i < ancount; i++) + { + aptr = display_rr(aptr, abuf, alen); + if (aptr == NULL) + return; + } + + /* Display the NS records. */ + printf("NS records:\n"); + for (i = 0; i < nscount; i++) + { + aptr = display_rr(aptr, abuf, alen); + if (aptr == NULL) + return; + } + + /* Display the additional records. */ + printf("Additional records:\n"); + for (i = 0; i < arcount; i++) + { + aptr = display_rr(aptr, abuf, alen); + if (aptr == NULL) + return; + } +} + +static const unsigned char *display_question(const unsigned char *aptr, + const unsigned char *abuf, + int alen) +{ + char *name; + int type, dnsclass, status; + long len; + + /* Parse the question name. */ + status = ares_expand_name(aptr, abuf, alen, &name, &len); + if (status != ARES_SUCCESS) + return NULL; + aptr += len; + + /* Make sure there's enough data after the name for the fixed part + * of the question. + */ + if (aptr + QFIXEDSZ > abuf + alen) + { + ares_free_string(name); + return NULL; + } + + /* Parse the question type and class. */ + type = DNS_QUESTION_TYPE(aptr); + dnsclass = DNS_QUESTION_CLASS(aptr); + aptr += QFIXEDSZ; + + /* Display the question, in a format sort of similar to how we will + * display RRs. + */ + printf("\t%-15s.\t", name); + if (dnsclass != C_IN) + printf("\t%s", class_name(dnsclass)); + printf("\t%s\n", type_name(type)); + ares_free_string(name); + return aptr; +} + +static const unsigned char *display_rr(const unsigned char *aptr, + const unsigned char *abuf, int alen) +{ + const unsigned char *p; + int type, dnsclass, ttl, dlen, status; + long len; + char addr[46]; + union { + unsigned char * as_uchar; + char * as_char; + } name; + + /* Parse the RR name. */ + status = ares_expand_name(aptr, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + aptr += len; + + /* Make sure there is enough data after the RR name for the fixed + * part of the RR. + */ + if (aptr + RRFIXEDSZ > abuf + alen) + { + ares_free_string(name.as_char); + return NULL; + } + + /* Parse the fixed part of the RR, and advance to the RR data + * field. */ + type = DNS_RR_TYPE(aptr); + dnsclass = DNS_RR_CLASS(aptr); + ttl = DNS_RR_TTL(aptr); + dlen = DNS_RR_LEN(aptr); + aptr += RRFIXEDSZ; + if (aptr + dlen > abuf + alen) + { + ares_free_string(name.as_char); + return NULL; + } + + /* Display the RR name, class, and type. */ + printf("\t%-15s.\t%d", name.as_char, ttl); + if (dnsclass != C_IN) + printf("\t%s", class_name(dnsclass)); + printf("\t%s", type_name(type)); + ares_free_string(name.as_char); + + /* Display the RR data. Don't touch aptr. */ + switch (type) + { + case T_CNAME: + case T_MB: + case T_MD: + case T_MF: + case T_MG: + case T_MR: + case T_NS: + case T_PTR: + /* For these types, the RR data is just a domain name. */ + status = ares_expand_name(aptr, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s.", name.as_char); + ares_free_string(name.as_char); + break; + + case T_HINFO: + /* The RR data is two length-counted character strings. */ + p = aptr; + len = *p; + if (p + len + 1 > aptr + dlen) + return NULL; + status = ares_expand_string(p, abuf, alen, &name.as_uchar, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s", name.as_char); + ares_free_string(name.as_char); + p += len; + len = *p; + if (p + len + 1 > aptr + dlen) + return NULL; + status = ares_expand_string(p, abuf, alen, &name.as_uchar, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s", name.as_char); + ares_free_string(name.as_char); + break; + + case T_MINFO: + /* The RR data is two domain names. */ + p = aptr; + status = ares_expand_name(p, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s.", name.as_char); + ares_free_string(name.as_char); + p += len; + status = ares_expand_name(p, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s.", name.as_char); + ares_free_string(name.as_char); + break; + + case T_MX: + /* The RR data is two bytes giving a preference ordering, and + * then a domain name. + */ + if (dlen < 2) + return NULL; + printf("\t%d", DNS__16BIT(aptr)); + status = ares_expand_name(aptr + 2, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s.", name.as_char); + ares_free_string(name.as_char); + break; + + case T_SOA: + /* The RR data is two domain names and then five four-byte + * numbers giving the serial number and some timeouts. + */ + p = aptr; + status = ares_expand_name(p, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s.\n", name.as_char); + ares_free_string(name.as_char); + p += len; + status = ares_expand_name(p, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t\t\t\t\t\t%s.\n", name.as_char); + ares_free_string(name.as_char); + p += len; + if (p + 20 > aptr + dlen) + return NULL; + printf("\t\t\t\t\t\t( %lu %lu %lu %lu %lu )", + (unsigned long)DNS__32BIT(p), (unsigned long)DNS__32BIT(p+4), + (unsigned long)DNS__32BIT(p+8), (unsigned long)DNS__32BIT(p+12), + (unsigned long)DNS__32BIT(p+16)); + break; + + case T_TXT: + /* The RR data is one or more length-counted character + * strings. */ + p = aptr; + while (p < aptr + dlen) + { + len = *p; + if (p + len + 1 > aptr + dlen) + return NULL; + status = ares_expand_string(p, abuf, alen, &name.as_uchar, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s", name.as_char); + ares_free_string(name.as_char); + p += len; + } + break; + + case T_A: + /* The RR data is a four-byte Internet address. */ + if (dlen != 4) + return NULL; + printf("\t%s", ares_inet_ntop(AF_INET,aptr,addr,sizeof(addr))); + break; + + case T_AAAA: + /* The RR data is a 16-byte IPv6 address. */ + if (dlen != 16) + return NULL; + printf("\t%s", ares_inet_ntop(AF_INET6,aptr,addr,sizeof(addr))); + break; + + case T_WKS: + /* Not implemented yet */ + break; + + case T_SRV: + /* The RR data is three two-byte numbers representing the + * priority, weight, and port, followed by a domain name. + */ + + printf("\t%d", DNS__16BIT(aptr)); + printf(" %d", DNS__16BIT(aptr + 2)); + printf(" %d", DNS__16BIT(aptr + 4)); + + status = ares_expand_name(aptr + 6, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s.", name.as_char); + ares_free_string(name.as_char); + break; + + case T_NAPTR: + + printf("\t%d", DNS__16BIT(aptr)); /* order */ + printf(" %d\n", DNS__16BIT(aptr + 2)); /* preference */ + + p = aptr + 4; + status = ares_expand_string(p, abuf, alen, &name.as_uchar, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t\t\t\t\t\t%s\n", name.as_char); + ares_free_string(name.as_char); + p += len; + + status = ares_expand_string(p, abuf, alen, &name.as_uchar, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t\t\t\t\t\t%s\n", name.as_char); + ares_free_string(name.as_char); + p += len; + + status = ares_expand_string(p, abuf, alen, &name.as_uchar, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t\t\t\t\t\t%s\n", name.as_char); + ares_free_string(name.as_char); + p += len; + + status = ares_expand_name(p, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t\t\t\t\t\t%s", name.as_char); + ares_free_string(name.as_char); + break; + + case T_DS: + case T_SSHFP: + case T_RRSIG: + case T_NSEC: + case T_DNSKEY: + printf("\t[RR type parsing unavailable]"); + break; + + default: + printf("\t[Unknown RR; cannot parse]"); + break; + } + printf("\n"); + + return aptr + dlen; +} + +static const char *type_name(int type) +{ + int i; + + for (i = 0; i < ntypes; i++) + { + if (types[i].value == type) + return types[i].name; + } + return "(unknown)"; +} + +static const char *class_name(int dnsclass) +{ + int i; + + for (i = 0; i < nclasses; i++) + { + if (classes[i].value == dnsclass) + return classes[i].name; + } + return "(unknown)"; +} + +static void usage(void) +{ + fprintf(stderr, "usage: adig [-f flag] [-s server] [-c class] " + "[-t type] [-p port] name ...\n"); + exit(1); +} + +static void destroy_addr_list(struct ares_addr_node *head) +{ + while(head) + { + struct ares_addr_node *detached = head; + head = head->next; + free(detached); + } +} + +static void append_addr_list(struct ares_addr_node **head, + struct ares_addr_node *node) +{ + struct ares_addr_node *last; + node->next = NULL; + if(*head) + { + last = *head; + while(last->next) + last = last->next; + last->next = node; + } + else + *head = node; +} @@ -0,0 +1,48 @@ +.TH AHOST "1" "April 2011" "c-ares utilities" +.SH NAME +ahost \- print the A or AAAA record associated with a hostname or IP address +.SH SYNOPSIS +.B ahost +[\fIOPTION\fR]... \fIHOST\fR... +.SH DESCRIPTION +.PP +.\" Add any additional description here +.PP +Look up the DNS A or AAAA record associated with HOST (a hostname or an +IP address). +.PP +This utility comes with the \fBc\-ares\fR asynchronous resolver library. +.SH OPTIONS +.TP +\fB\-d\fR +Print some extra debugging output. +.TP +\fB\-h\fR, \fB\-\-help\fR +Display this help and exit. +.TP +\fB\-t\fR type +If type is "aa", print the A record (default). +If type is "aaaa", print the AAAA record. +.SH "REPORTING BUGS" +Report bugs to the c-ares mailing list: +\fBhttp://cool.haxx.se/mailman/listinfo/c-ares\fR +.SH "SEE ALSO" +.PP +acountry(1), adig(1). +.SH COPYRIGHT +This utility is based on code/ideas contained in sofware written by Greg Hudson (ares) +carrying the following notice: +.br +Copyright 1998 by the Massachusetts Institute of Technology. +.br +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +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. +.br +No further copyright claims are being made by the author(s) of this utility. @@ -0,0 +1,202 @@ +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" + +#if !defined(WIN32) || defined(WATT32) +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <netdb.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#endif +#ifdef HAVE_STRINGS_H +#include <strings.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "ares.h" +#include "ares_dns.h" +#include "inet_ntop.h" +#include "inet_net_pton.h" +#include "ares_getopt.h" +#include "ares_ipv6.h" +#include "ares_nowarn.h" + +#ifndef HAVE_STRDUP +# include "ares_strdup.h" +# define strdup(ptr) ares_strdup(ptr) +#endif + +#ifndef HAVE_STRCASECMP +# include "ares_strcasecmp.h" +# define strcasecmp(p1,p2) ares_strcasecmp(p1,p2) +#endif + +#ifndef HAVE_STRNCASECMP +# include "ares_strcasecmp.h" +# define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n) +#endif + +static void callback(void *arg, int status, int timeouts, struct hostent *host); +static void usage(void); + +int main(int argc, char **argv) +{ + ares_channel channel; + int status, nfds, c, addr_family = AF_INET; + fd_set read_fds, write_fds; + struct timeval *tvp, tv; + struct in_addr addr4; + struct ares_in6_addr addr6; + +#ifdef USE_WINSOCK + WORD wVersionRequested = MAKEWORD(USE_WINSOCK,USE_WINSOCK); + WSADATA wsaData; + WSAStartup(wVersionRequested, &wsaData); +#endif + + status = ares_library_init(ARES_LIB_INIT_ALL); + if (status != ARES_SUCCESS) + { + fprintf(stderr, "ares_library_init: %s\n", ares_strerror(status)); + return 1; + } + + while ((c = ares_getopt(argc,argv,"dt:h")) != -1) + { + switch (c) + { + case 'd': +#ifdef WATT32 + dbug_init(); +#endif + break; + case 't': + if (!strcasecmp(optarg,"a")) + addr_family = AF_INET; + else if (!strcasecmp(optarg,"aaaa")) + addr_family = AF_INET6; + else + usage(); + break; + case 'h': + default: + usage(); + break; + } + } + + argc -= optind; + argv += optind; + if (argc < 1) + usage(); + + status = ares_init(&channel); + if (status != ARES_SUCCESS) + { + fprintf(stderr, "ares_init: %s\n", ares_strerror(status)); + return 1; + } + + /* Initiate the queries, one per command-line argument. */ + for ( ; *argv; argv++) + { + if (ares_inet_pton(AF_INET, *argv, &addr4) == 1) + { + ares_gethostbyaddr(channel, &addr4, sizeof(addr4), AF_INET, callback, + *argv); + } + else if (ares_inet_pton(AF_INET6, *argv, &addr6) == 1) + { + ares_gethostbyaddr(channel, &addr6, sizeof(addr6), AF_INET6, callback, + *argv); + } + else + { + ares_gethostbyname(channel, *argv, addr_family, callback, *argv); + } + } + + /* Wait for all queries to complete. */ + for (;;) + { + FD_ZERO(&read_fds); + FD_ZERO(&write_fds); + nfds = ares_fds(channel, &read_fds, &write_fds); + if (nfds == 0) + break; + tvp = ares_timeout(channel, NULL, &tv); + select(nfds, &read_fds, &write_fds, NULL, tvp); + ares_process(channel, &read_fds, &write_fds); + } + + ares_destroy(channel); + + ares_library_cleanup(); + +#ifdef USE_WINSOCK + WSACleanup(); +#endif + + return 0; +} + +static void callback(void *arg, int status, int timeouts, struct hostent *host) +{ + char **p; + + (void)timeouts; + + if (status != ARES_SUCCESS) + { + fprintf(stderr, "%s: %s\n", (char *) arg, ares_strerror(status)); + return; + } + + for (p = host->h_addr_list; *p; p++) + { + char addr_buf[46] = "??"; + + ares_inet_ntop(host->h_addrtype, *p, addr_buf, sizeof(addr_buf)); + printf("%-32s\t%s", host->h_name, addr_buf); +#if 0 + if (host->h_aliases[0]) + { + int i; + + printf (", Aliases: "); + for (i = 0; host->h_aliases[i]; i++) + printf("%s ", host->h_aliases[i]); + } +#endif + puts(""); + } +} + +static void usage(void) +{ + fprintf(stderr, "usage: ahost [-t {a|aaaa}] {host|addr} ...\n"); + exit(1); +} @@ -0,0 +1,543 @@ + +/* Copyright 1998, 2009 by the Massachusetts Institute of Technology. + * Copyright (C) 2007-2011 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#ifndef ARES__H +#define ARES__H + +#include "ares_version.h" /* c-ares version defines */ +#include "ares_build.h" /* c-ares build definitions */ +#include "ares_rules.h" /* c-ares rules enforcement */ + +/* + * Define WIN32 when build target is Win32 API + */ + +#if (defined(_WIN32) || defined(__WIN32__)) && \ + !defined(WIN32) && !defined(__SYMBIAN32__) +# define WIN32 +#endif + +#include <sys/types.h> + +/* HP-UX systems version 9, 10 and 11 lack sys/select.h and so does oldish + libc5-based Linux systems. Only include it on system that are known to + require it! */ +#if defined(_AIX) || defined(__NOVELL_LIBC__) || defined(__NetBSD__) || \ + defined(__minix) || defined(__SYMBIAN32__) || defined(__INTEGRITY) +#include <sys/select.h> +#endif +#if (defined(NETWARE) && !defined(__NOVELL_LIBC__)) +#include <sys/bsdskt.h> +#endif + +#if defined(WATT32) +# include <netinet/in.h> +# include <sys/socket.h> +# include <tcp.h> +#elif defined(_WIN32_WCE) +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include <windows.h> +# include <winsock.h> +#elif defined(WIN32) +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include <windows.h> +# include <winsock2.h> +# include <ws2tcpip.h> +#else +# include <sys/socket.h> +# include <netinet/in.h> +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/* +** c-ares external API function linkage decorations. +*/ + +#if !defined(CARES_STATICLIB) && \ + (defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__)) + /* __declspec function decoration for Win32 and Symbian DLL's */ +# if defined(CARES_BUILDING_LIBRARY) +# define CARES_EXTERN __declspec(dllexport) +# else +# define CARES_EXTERN __declspec(dllimport) +# endif +#else + /* visibility function decoration for other cases */ +# if !defined(CARES_SYMBOL_HIDING) || \ + defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__) +# define CARES_EXTERN +# else +# define CARES_EXTERN CARES_SYMBOL_SCOPE_EXTERN +# endif +#endif + + +#define ARES_SUCCESS 0 + +/* Server error codes (ARES_ENODATA indicates no relevant answer) */ +#define ARES_ENODATA 1 +#define ARES_EFORMERR 2 +#define ARES_ESERVFAIL 3 +#define ARES_ENOTFOUND 4 +#define ARES_ENOTIMP 5 +#define ARES_EREFUSED 6 + +/* Locally generated error codes */ +#define ARES_EBADQUERY 7 +#define ARES_EBADNAME 8 +#define ARES_EBADFAMILY 9 +#define ARES_EBADRESP 10 +#define ARES_ECONNREFUSED 11 +#define ARES_ETIMEOUT 12 +#define ARES_EOF 13 +#define ARES_EFILE 14 +#define ARES_ENOMEM 15 +#define ARES_EDESTRUCTION 16 +#define ARES_EBADSTR 17 + +/* ares_getnameinfo error codes */ +#define ARES_EBADFLAGS 18 + +/* ares_getaddrinfo error codes */ +#define ARES_ENONAME 19 +#define ARES_EBADHINTS 20 + +/* Uninitialized library error code */ +#define ARES_ENOTINITIALIZED 21 /* introduced in 1.7.0 */ + +/* ares_library_init error codes */ +#define ARES_ELOADIPHLPAPI 22 /* introduced in 1.7.0 */ +#define ARES_EADDRGETNETWORKPARAMS 23 /* introduced in 1.7.0 */ + +/* More error codes */ +#define ARES_ECANCELLED 24 /* introduced in 1.7.0 */ + +/* Flag values */ +#define ARES_FLAG_USEVC (1 << 0) +#define ARES_FLAG_PRIMARY (1 << 1) +#define ARES_FLAG_IGNTC (1 << 2) +#define ARES_FLAG_NORECURSE (1 << 3) +#define ARES_FLAG_STAYOPEN (1 << 4) +#define ARES_FLAG_NOSEARCH (1 << 5) +#define ARES_FLAG_NOALIASES (1 << 6) +#define ARES_FLAG_NOCHECKRESP (1 << 7) + +/* Option mask values */ +#define ARES_OPT_FLAGS (1 << 0) +#define ARES_OPT_TIMEOUT (1 << 1) +#define ARES_OPT_TRIES (1 << 2) +#define ARES_OPT_NDOTS (1 << 3) +#define ARES_OPT_UDP_PORT (1 << 4) +#define ARES_OPT_TCP_PORT (1 << 5) +#define ARES_OPT_SERVERS (1 << 6) +#define ARES_OPT_DOMAINS (1 << 7) +#define ARES_OPT_LOOKUPS (1 << 8) +#define ARES_OPT_SOCK_STATE_CB (1 << 9) +#define ARES_OPT_SORTLIST (1 << 10) +#define ARES_OPT_SOCK_SNDBUF (1 << 11) +#define ARES_OPT_SOCK_RCVBUF (1 << 12) +#define ARES_OPT_TIMEOUTMS (1 << 13) +#define ARES_OPT_ROTATE (1 << 14) + +/* Nameinfo flag values */ +#define ARES_NI_NOFQDN (1 << 0) +#define ARES_NI_NUMERICHOST (1 << 1) +#define ARES_NI_NAMEREQD (1 << 2) +#define ARES_NI_NUMERICSERV (1 << 3) +#define ARES_NI_DGRAM (1 << 4) +#define ARES_NI_TCP 0 +#define ARES_NI_UDP ARES_NI_DGRAM +#define ARES_NI_SCTP (1 << 5) +#define ARES_NI_DCCP (1 << 6) +#define ARES_NI_NUMERICSCOPE (1 << 7) +#define ARES_NI_LOOKUPHOST (1 << 8) +#define ARES_NI_LOOKUPSERVICE (1 << 9) +/* Reserved for future use */ +#define ARES_NI_IDN (1 << 10) +#define ARES_NI_IDN_ALLOW_UNASSIGNED (1 << 11) +#define ARES_NI_IDN_USE_STD3_ASCII_RULES (1 << 12) + +/* Addrinfo flag values */ +#define ARES_AI_CANONNAME (1 << 0) +#define ARES_AI_NUMERICHOST (1 << 1) +#define ARES_AI_PASSIVE (1 << 2) +#define ARES_AI_NUMERICSERV (1 << 3) +#define ARES_AI_V4MAPPED (1 << 4) +#define ARES_AI_ALL (1 << 5) +#define ARES_AI_ADDRCONFIG (1 << 6) +/* Reserved for future use */ +#define ARES_AI_IDN (1 << 10) +#define ARES_AI_IDN_ALLOW_UNASSIGNED (1 << 11) +#define ARES_AI_IDN_USE_STD3_ASCII_RULES (1 << 12) +#define ARES_AI_CANONIDN (1 << 13) + +#define ARES_AI_MASK (ARES_AI_CANONNAME|ARES_AI_NUMERICHOST|ARES_AI_PASSIVE| \ + ARES_AI_NUMERICSERV|ARES_AI_V4MAPPED|ARES_AI_ALL| \ + ARES_AI_ADDRCONFIG) +#define ARES_GETSOCK_MAXNUM 16 /* ares_getsock() can return info about this + many sockets */ +#define ARES_GETSOCK_READABLE(bits,num) (bits & (1<< (num))) +#define ARES_GETSOCK_WRITABLE(bits,num) (bits & (1 << ((num) + \ + ARES_GETSOCK_MAXNUM))) + +/* c-ares library initialization flag values */ +#define ARES_LIB_INIT_NONE (0) +#define ARES_LIB_INIT_WIN32 (1 << 0) +#define ARES_LIB_INIT_ALL (ARES_LIB_INIT_WIN32) + + +/* + * Typedef our socket type + */ + +#ifndef ares_socket_typedef +#ifdef WIN32 +typedef SOCKET ares_socket_t; +#define ARES_SOCKET_BAD INVALID_SOCKET +#else +typedef int ares_socket_t; +#define ARES_SOCKET_BAD -1 +#endif +#define ares_socket_typedef +#endif /* ares_socket_typedef */ + +typedef void (*ares_sock_state_cb)(void *data, + ares_socket_t socket_fd, + int readable, + int writable); + +struct apattern; + +/* NOTE about the ares_options struct to users and developers. + + This struct will remain looking like this. It will not be extended nor + shrunk in future releases, but all new options will be set by ares_set_*() + options instead of with the ares_init_options() function. + + Eventually (in a galaxy far far away), all options will be settable by + ares_set_*() options and the ares_init_options() function will become + deprecated. + + When new options are added to c-ares, they are not added to this + struct. And they are not "saved" with the ares_save_options() function but + instead we encourage the use of the ares_dup() function. Needless to say, + if you add config options to c-ares you need to make sure ares_dup() + duplicates this new option. + + */ +struct ares_options { + int flags; + int timeout; /* in seconds or milliseconds, depending on options */ + int tries; + int ndots; + unsigned short udp_port; + unsigned short tcp_port; + int socket_send_buffer_size; + int socket_receive_buffer_size; + struct in_addr *servers; + int nservers; + char **domains; + int ndomains; + char *lookups; + ares_sock_state_cb sock_state_cb; + void *sock_state_cb_data; + struct apattern *sortlist; + int nsort; +}; + +struct hostent; +struct timeval; +struct sockaddr; +struct ares_channeldata; + +typedef struct ares_channeldata *ares_channel; + +typedef void (*ares_callback)(void *arg, + int status, + int timeouts, + unsigned char *abuf, + int alen); + +typedef void (*ares_host_callback)(void *arg, + int status, + int timeouts, + struct hostent *hostent); + +typedef void (*ares_nameinfo_callback)(void *arg, + int status, + int timeouts, + char *node, + char *service); + +typedef int (*ares_sock_create_callback)(ares_socket_t socket_fd, + int type, + void *data); + +CARES_EXTERN int ares_library_init(int flags); + +CARES_EXTERN void ares_library_cleanup(void); + +CARES_EXTERN const char *ares_version(int *version); + +CARES_EXTERN int ares_init(ares_channel *channelptr); + +CARES_EXTERN int ares_init_options(ares_channel *channelptr, + struct ares_options *options, + int optmask); + +CARES_EXTERN int ares_save_options(ares_channel channel, + struct ares_options *options, + int *optmask); + +CARES_EXTERN void ares_destroy_options(struct ares_options *options); + +CARES_EXTERN int ares_dup(ares_channel *dest, + ares_channel src); + +CARES_EXTERN void ares_destroy(ares_channel channel); + +CARES_EXTERN void ares_cancel(ares_channel channel); + +/* These next 3 configure local binding for the out-going socket + * connection. Use these to specify source IP and/or network device + * on multi-homed systems. + */ +CARES_EXTERN void ares_set_local_ip4(ares_channel channel, unsigned int local_ip); + +/* local_ip6 should be 16 bytes in length */ +CARES_EXTERN void ares_set_local_ip6(ares_channel channel, + const unsigned char* local_ip6); + +/* local_dev_name should be null terminated. */ +CARES_EXTERN void ares_set_local_dev(ares_channel channel, + const char* local_dev_name); + +CARES_EXTERN void ares_set_socket_callback(ares_channel channel, + ares_sock_create_callback callback, + void *user_data); + +CARES_EXTERN void ares_send(ares_channel channel, + const unsigned char *qbuf, + int qlen, + ares_callback callback, + void *arg); + +CARES_EXTERN void ares_query(ares_channel channel, + const char *name, + int dnsclass, + int type, + ares_callback callback, + void *arg); + +CARES_EXTERN void ares_search(ares_channel channel, + const char *name, + int dnsclass, + int type, + ares_callback callback, + void *arg); + +CARES_EXTERN void ares_gethostbyname(ares_channel channel, + const char *name, + int family, + ares_host_callback callback, + void *arg); + +CARES_EXTERN int ares_gethostbyname_file(ares_channel channel, + const char *name, + int family, + struct hostent **host); + +CARES_EXTERN void ares_gethostbyaddr(ares_channel channel, + const void *addr, + int addrlen, + int family, + ares_host_callback callback, + void *arg); + +CARES_EXTERN void ares_getnameinfo(ares_channel channel, + const struct sockaddr *sa, + ares_socklen_t salen, + int flags, + ares_nameinfo_callback callback, + void *arg); + +CARES_EXTERN int ares_fds(ares_channel channel, + fd_set *read_fds, + fd_set *write_fds); + +CARES_EXTERN int ares_getsock(ares_channel channel, + ares_socket_t *socks, + int numsocks); + +CARES_EXTERN struct timeval *ares_timeout(ares_channel channel, + struct timeval *maxtv, + struct timeval *tv); + +CARES_EXTERN void ares_process(ares_channel channel, + fd_set *read_fds, + fd_set *write_fds); + +CARES_EXTERN void ares_process_fd(ares_channel channel, + ares_socket_t read_fd, + ares_socket_t write_fd); + +CARES_EXTERN int ares_mkquery(const char *name, + int dnsclass, + int type, + unsigned short id, + int rd, + unsigned char **buf, + int *buflen); + +CARES_EXTERN int ares_expand_name(const unsigned char *encoded, + const unsigned char *abuf, + int alen, + char **s, + long *enclen); + +CARES_EXTERN int ares_expand_string(const unsigned char *encoded, + const unsigned char *abuf, + int alen, + unsigned char **s, + long *enclen); + +/* + * NOTE: before c-ares 1.7.0 we would most often use the system in6_addr + * struct below when ares itself was built, but many apps would use this + * private version since the header checked a HAVE_* define for it. Starting + * with 1.7.0 we always declare and use our own to stop relying on the + * system's one. + */ +struct ares_in6_addr { + union { + unsigned char _S6_u8[16]; + } _S6_un; +}; + +struct ares_addrttl { + struct in_addr ipaddr; + int ttl; +}; + +struct ares_addr6ttl { + struct ares_in6_addr ip6addr; + int ttl; +}; + +struct ares_srv_reply { + struct ares_srv_reply *next; + char *host; + unsigned short priority; + unsigned short weight; + unsigned short port; +}; + +struct ares_mx_reply { + struct ares_mx_reply *next; + char *host; + unsigned short priority; +}; + +struct ares_txt_reply { + struct ares_txt_reply *next; + unsigned char *txt; + size_t length; /* length excludes null termination */ +}; + +/* +** Parse the buffer, starting at *abuf and of length alen bytes, previously +** obtained from an ares_search call. Put the results in *host, if nonnull. +** Also, if addrttls is nonnull, put up to *naddrttls IPv4 addresses along with +** their TTLs in that array, and set *naddrttls to the number of addresses +** so written. +*/ + +CARES_EXTERN int ares_parse_a_reply(const unsigned char *abuf, + int alen, + struct hostent **host, + struct ares_addrttl *addrttls, + int *naddrttls); + +CARES_EXTERN int ares_parse_aaaa_reply(const unsigned char *abuf, + int alen, + struct hostent **host, + struct ares_addr6ttl *addrttls, + int *naddrttls); + +CARES_EXTERN int ares_parse_ptr_reply(const unsigned char *abuf, + int alen, + const void *addr, + int addrlen, + int family, + struct hostent **host); + +CARES_EXTERN int ares_parse_ns_reply(const unsigned char *abuf, + int alen, + struct hostent **host); + +CARES_EXTERN int ares_parse_srv_reply(const unsigned char* abuf, + int alen, + struct ares_srv_reply** srv_out); + +CARES_EXTERN int ares_parse_mx_reply(const unsigned char* abuf, + int alen, + struct ares_mx_reply** mx_out); + +CARES_EXTERN int ares_parse_txt_reply(const unsigned char* abuf, + int alen, + struct ares_txt_reply** txt_out); + +CARES_EXTERN void ares_free_string(void *str); + +CARES_EXTERN void ares_free_hostent(struct hostent *host); + +CARES_EXTERN void ares_free_data(void *dataptr); + +CARES_EXTERN const char *ares_strerror(int code); + +/* TODO: Hold port here as well. */ +struct ares_addr_node { + struct ares_addr_node *next; + int family; + union { + struct in_addr addr4; + struct ares_in6_addr addr6; + } addr; +}; + +CARES_EXTERN int ares_set_servers(ares_channel channel, + struct ares_addr_node *servers); + +/* Incomming string format: host[:port][,host[:port]]... */ +CARES_EXTERN int ares_set_servers_csv(ares_channel channel, + const char* servers); + +CARES_EXTERN int ares_get_servers(ares_channel channel, + struct ares_addr_node **servers); + +#ifdef __cplusplus +} +#endif + +#endif /* ARES__H */ diff --git a/ares__close_sockets.c b/ares__close_sockets.c new file mode 100644 index 0000000..5d391a9 --- /dev/null +++ b/ares__close_sockets.c @@ -0,0 +1,66 @@ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" + +#include <stdlib.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#include "ares.h" +#include "ares_private.h" + +void ares__close_sockets(ares_channel channel, struct server_state *server) +{ + struct send_request *sendreq; + + /* Free all pending output buffers. */ + while (server->qhead) + { + /* Advance server->qhead; pull out query as we go. */ + sendreq = server->qhead; + server->qhead = sendreq->next; + if (sendreq->data_storage != NULL) + free(sendreq->data_storage); + free(sendreq); + } + server->qtail = NULL; + + /* Reset any existing input buffer. */ + if (server->tcp_buffer) + free(server->tcp_buffer); + server->tcp_buffer = NULL; + server->tcp_lenbuf_pos = 0; + + /* Reset brokenness */ + server->is_broken = 0; + + /* Close the TCP and UDP sockets. */ + if (server->tcp_socket != ARES_SOCKET_BAD) + { + SOCK_STATE_CALLBACK(channel, server->tcp_socket, 0, 0); + sclose(server->tcp_socket); + server->tcp_socket = ARES_SOCKET_BAD; + server->tcp_connection_generation = ++channel->tcp_connection_generation; + } + if (server->udp_socket != ARES_SOCKET_BAD) + { + SOCK_STATE_CALLBACK(channel, server->udp_socket, 0, 0); + sclose(server->udp_socket); + server->udp_socket = ARES_SOCKET_BAD; + } +} diff --git a/ares__get_hostent.c b/ares__get_hostent.c new file mode 100644 index 0000000..298df09 --- /dev/null +++ b/ares__get_hostent.c @@ -0,0 +1,263 @@ + +/* Copyright 1998, 2010 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif + +#include "ares.h" +#include "inet_net_pton.h" +#include "ares_private.h" + +int ares__get_hostent(FILE *fp, int family, struct hostent **host) +{ + char *line = NULL, *p, *q, **alias; + char *txtaddr, *txthost, *txtalias; + int status; + size_t addrlen, linesize, naliases; + struct ares_addr addr; + struct hostent *hostent = NULL; + + *host = NULL; /* Assume failure */ + + /* Validate family */ + switch (family) { + case AF_INET: + case AF_INET6: + case AF_UNSPEC: + break; + default: + return ARES_EBADFAMILY; + } + + while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) + { + + /* Trim line comment. */ + p = line; + while (*p && (*p != '#')) + p++; + *p = '\0'; + + /* Trim trailing whitespace. */ + q = p - 1; + while ((q >= line) && ISSPACE(*q)) + q--; + *++q = '\0'; + + /* Skip leading whitespace. */ + p = line; + while (*p && ISSPACE(*p)) + p++; + if (!*p) + /* Ignore line if empty. */ + continue; + + /* Pointer to start of IPv4 or IPv6 address part. */ + txtaddr = p; + + /* Advance past address part. */ + while (*p && !ISSPACE(*p)) + p++; + if (!*p) + /* Ignore line if reached end of line. */ + continue; + + /* Null terminate address part. */ + *p = '\0'; + + /* Advance to host name */ + p++; + while (*p && ISSPACE(*p)) + p++; + if (!*p) + /* Ignore line if reached end of line. */ + continue; + + /* Pointer to start of host name. */ + txthost = p; + + /* Advance past host name. */ + while (*p && !ISSPACE(*p)) + p++; + + /* Pointer to start of first alias. */ + txtalias = NULL; + if (*p) + { + q = p + 1; + while (*q && ISSPACE(*q)) + q++; + if (*q) + txtalias = q; + } + + /* Null terminate host name. */ + *p = '\0'; + + /* find out number of aliases. */ + naliases = 0; + if (txtalias) + { + p = txtalias; + while (*p) + { + while (*p && !ISSPACE(*p)) + p++; + while (*p && ISSPACE(*p)) + p++; + naliases++; + } + } + + /* Convert address string to network address for the requested family. */ + addrlen = 0; + addr.family = AF_UNSPEC; + addr.addrV4.s_addr = INADDR_NONE; + if ((family == AF_INET) || (family == AF_UNSPEC)) + { + addr.addrV4.s_addr = inet_addr(txtaddr); + if (addr.addrV4.s_addr != INADDR_NONE) + { + /* Actual network address family and length. */ + addr.family = AF_INET; + addrlen = sizeof(addr.addrV4); + } + } + if ((family == AF_INET6) || ((family == AF_UNSPEC) && (!addrlen))) + { + if (ares_inet_pton(AF_INET6, txtaddr, &addr.addrV6) > 0) + { + /* Actual network address family and length. */ + addr.family = AF_INET6; + addrlen = sizeof(addr.addrV6); + } + } + if (!addrlen) + /* Ignore line if invalid address string for the requested family. */ + continue; + + /* + ** Actual address family possible values are AF_INET and AF_INET6 only. + */ + + /* Allocate memory for the hostent structure. */ + hostent = malloc(sizeof(struct hostent)); + if (!hostent) + break; + + /* Initialize fields for out of memory condition. */ + hostent->h_aliases = NULL; + hostent->h_addr_list = NULL; + + /* Copy official host name. */ + hostent->h_name = strdup(txthost); + if (!hostent->h_name) + break; + + /* Copy network address. */ + hostent->h_addr_list = malloc(2 * sizeof(char *)); + if (!hostent->h_addr_list) + break; + hostent->h_addr_list[1] = NULL; + hostent->h_addr_list[0] = malloc(addrlen); + if (!hostent->h_addr_list[0]) + break; + if (addr.family == AF_INET) + memcpy(hostent->h_addr_list[0], &addr.addrV4, sizeof(addr.addrV4)); + else + memcpy(hostent->h_addr_list[0], &addr.addrV6, sizeof(addr.addrV6)); + + /* Copy aliases. */ + hostent->h_aliases = malloc((naliases + 1) * sizeof(char *)); + if (!hostent->h_aliases) + break; + alias = hostent->h_aliases; + while (naliases) + *(alias + naliases--) = NULL; + *alias = NULL; + while (txtalias) + { + p = txtalias; + while (*p && !ISSPACE(*p)) + p++; + q = p; + while (*q && ISSPACE(*q)) + q++; + *p = '\0'; + if ((*alias = strdup(txtalias)) == NULL) + break; + alias++; + txtalias = *q ? q : NULL; + } + if (txtalias) + /* Alias memory allocation failure. */ + break; + + /* Copy actual network address family and length. */ + hostent->h_addrtype = addr.family; + hostent->h_length = (int)addrlen; + + /* Free line buffer. */ + free(line); + + /* Return hostent successfully */ + *host = hostent; + return ARES_SUCCESS; + + } + + /* If allocated, free line buffer. */ + if (line) + free(line); + + if (status == ARES_SUCCESS) + { + /* Memory allocation failure; clean up. */ + if (hostent) + { + if (hostent->h_name) + free((char *) hostent->h_name); + if (hostent->h_aliases) + { + for (alias = hostent->h_aliases; *alias; alias++) + free(*alias); + free(hostent->h_aliases); + } + if (hostent->h_addr_list) + { + if (hostent->h_addr_list[0]) + free(hostent->h_addr_list[0]); + free(hostent->h_addr_list); + } + free(hostent); + } + return ARES_ENOMEM; + } + + return status; +} diff --git a/ares__read_line.c b/ares__read_line.c new file mode 100644 index 0000000..ca01803 --- /dev/null +++ b/ares__read_line.c @@ -0,0 +1,71 @@ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "ares.h" +#include "ares_nowarn.h" +#include "ares_private.h" + +/* This is an internal function. Its contract is to read a line from + * a file into a dynamically allocated buffer, zeroing the trailing + * newline if there is one. The calling routine may call + * ares__read_line multiple times with the same buf and bufsize + * pointers; *buf will be reallocated and *bufsize adjusted as + * appropriate. The initial value of *buf should be NULL. After the + * calling routine is done reading lines, it should free *buf. + */ +int ares__read_line(FILE *fp, char **buf, size_t *bufsize) +{ + char *newbuf; + size_t offset = 0; + size_t len; + + if (*buf == NULL) + { + *buf = malloc(128); + if (!*buf) + return ARES_ENOMEM; + *bufsize = 128; + } + + for (;;) + { + int bytestoread = aresx_uztosi(*bufsize - offset); + + if (!fgets(*buf + offset, bytestoread, fp)) + return (offset != 0) ? 0 : (ferror(fp)) ? ARES_EFILE : ARES_EOF; + len = offset + strlen(*buf + offset); + if ((*buf)[len - 1] == '\n') + { + (*buf)[len - 1] = 0; + break; + } + offset = len; + if(len < *bufsize - 1) + continue; + + /* Allocate more space. */ + newbuf = realloc(*buf, *bufsize * 2); + if (!newbuf) + return ARES_ENOMEM; + *buf = newbuf; + *bufsize *= 2; + } + return ARES_SUCCESS; +} diff --git a/ares__timeval.c b/ares__timeval.c new file mode 100644 index 0000000..f7aa788 --- /dev/null +++ b/ares__timeval.c @@ -0,0 +1,111 @@ + +/* Copyright (C) 2008 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, 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. + */ + +#include "ares_setup.h" +#include "ares.h" +#include "ares_private.h" + +#if defined(WIN32) && !defined(MSDOS) + +struct timeval ares__tvnow(void) +{ + /* + ** GetTickCount() is available on _all_ Windows versions from W95 up + ** to nowadays. Returns milliseconds elapsed since last system boot, + ** increases monotonically and wraps once 49.7 days have elapsed. + */ + struct timeval now; + DWORD milliseconds = GetTickCount(); + now.tv_sec = milliseconds / 1000; + now.tv_usec = (milliseconds % 1000) * 1000; + return now; +} + +#elif defined(HAVE_CLOCK_GETTIME_MONOTONIC) + +struct timeval ares__tvnow(void) +{ + /* + ** clock_gettime() is granted to be increased monotonically when the + ** monotonic clock is queried. Time starting point is unspecified, it + ** could be the system start-up time, the Epoch, or something else, + ** in any case the time starting point does not change once that the + ** system has started up. + */ + struct timeval now; + struct timespec tsnow; + if(0 == clock_gettime(CLOCK_MONOTONIC, &tsnow)) { + now.tv_sec = tsnow.tv_sec; + now.tv_usec = tsnow.tv_nsec / 1000; + } + /* + ** Even when the configure process has truly detected monotonic clock + ** availability, it might happen that it is not actually available at + ** run-time. When this occurs simply fallback to other time source. + */ +#ifdef HAVE_GETTIMEOFDAY + else + (void)gettimeofday(&now, NULL); +#else + else { + now.tv_sec = (long)time(NULL); + now.tv_usec = 0; + } +#endif + return now; +} + +#elif defined(HAVE_GETTIMEOFDAY) + +struct timeval ares__tvnow(void) +{ + /* + ** gettimeofday() is not granted to be increased monotonically, due to + ** clock drifting and external source time synchronization it can jump + ** forward or backward in time. + */ + struct timeval now; + (void)gettimeofday(&now, NULL); + return now; +} + +#else + +struct timeval ares__tvnow(void) +{ + /* + ** time() returns the value of time in seconds since the Epoch. + */ + struct timeval now; + now.tv_sec = (long)time(NULL); + now.tv_usec = 0; + return now; +} + +#endif + +#if 0 /* Not used */ +/* + * Make sure that the first argument is the more recent time, as otherwise + * we'll get a weird negative time-diff back... + * + * Returns: the time difference in number of milliseconds. + */ +long ares__tvdiff(struct timeval newer, struct timeval older) +{ + return (newer.tv_sec-older.tv_sec)*1000+ + (newer.tv_usec-older.tv_usec)/1000; +} +#endif + diff --git a/ares_build.h b/ares_build.h new file mode 100644 index 0000000..2736cff --- /dev/null +++ b/ares_build.h @@ -0,0 +1,252 @@ +#ifndef __CARES_BUILD_H +#define __CARES_BUILD_H + + +/* Copyright (C) 2009 - 2010 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, 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. + */ + +/* ================================================================ */ +/* NOTES FOR CONFIGURE CAPABLE SYSTEMS */ +/* ================================================================ */ + +/* + * NOTE 1: + * ------- + * + * See file ares_build.h.in, run configure, and forget that this file + * exists it is only used for non-configure systems. + * But you can keep reading if you want ;-) + * + */ + +/* ================================================================ */ +/* NOTES FOR NON-CONFIGURE SYSTEMS */ +/* ================================================================ */ + +/* + * NOTE 1: + * ------- + * + * Nothing in this file is intended to be modified or adjusted by the + * c-ares library user nor by the c-ares library builder. + * + * If you think that something actually needs to be changed, adjusted + * or fixed in this file, then, report it on the c-ares development + * mailing list: http://cool.haxx.se/mailman/listinfo/c-ares/ + * + * Try to keep one section per platform, compiler and architecture, + * otherwise, if an existing section is reused for a different one and + * later on the original is adjusted, probably the piggybacking one can + * be adversely changed. + * + * In order to differentiate between platforms/compilers/architectures + * use only compiler built in predefined preprocessor symbols. + * + * This header file shall only export symbols which are 'cares' or 'CARES' + * prefixed, otherwise public name space would be polluted. + * + * NOTE 2: + * ------- + * + * Right now you might be staring at file ares_build.h.dist or ares_build.h, + * this is due to the following reason: file ares_build.h.dist is renamed + * to ares_build.h when the c-ares source code distribution archive file is + * created. + * + * File ares_build.h.dist is not included in the distribution archive. + * File ares_build.h is not present in the git tree. + * + * The distributed ares_build.h file is only intended to be used on systems + * which can not run the also distributed configure script. + * + * On systems capable of running the configure script, the configure process + * will overwrite the distributed ares_build.h file with one that is suitable + * and specific to the library being configured and built, which is generated + * from the ares_build.h.in template file. + * + * If you check out from git on a non-configure platform, you must run the + * appropriate buildconf* script to set up ares_build.h and other local files. + * + */ + +/* ================================================================ */ +/* DEFINITION OF THESE SYMBOLS SHALL NOT TAKE PLACE ANYWHERE ELSE */ +/* ================================================================ */ + +#ifdef CARES_SIZEOF_LONG +# error "CARES_SIZEOF_LONG shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_SIZEOF_LONG_already_defined +#endif + +#ifdef CARES_TYPEOF_ARES_SOCKLEN_T +# error "CARES_TYPEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_TYPEOF_ARES_SOCKLEN_T_already_defined +#endif + +#ifdef CARES_SIZEOF_ARES_SOCKLEN_T +# error "CARES_SIZEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_SIZEOF_ARES_SOCKLEN_T_already_defined +#endif + +/* ================================================================ */ +/* EXTERNAL INTERFACE SETTINGS FOR NON-CONFIGURE SYSTEMS ONLY */ +/* ================================================================ */ + +#if defined(__DJGPP__) || defined(__GO32__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__SALFORDC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__BORLANDC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__TURBOC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__WATCOMC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__POCC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__LCC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__SYMBIAN32__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T unsigned int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__MWERKS__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(_WIN32_WCE) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__MINGW32__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__VMS) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T unsigned int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__OS400__) +# if defined(__ILEC400__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 +# define CARES_PULL_SYS_TYPES_H 1 +# define CARES_PULL_SYS_SOCKET_H 1 +# endif + +#elif defined(__MVS__) +# if defined(__IBMC__) || defined(__IBMCPP__) +# if defined(_ILP32) +# define CARES_SIZEOF_LONG 4 +# elif defined(_LP64) +# define CARES_SIZEOF_LONG 8 +# endif +# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 +# define CARES_PULL_SYS_TYPES_H 1 +# define CARES_PULL_SYS_SOCKET_H 1 +# endif + +#elif defined(__370__) +# if defined(__IBMC__) || defined(__IBMCPP__) +# if defined(_ILP32) +# define CARES_SIZEOF_LONG 4 +# elif defined(_LP64) +# define CARES_SIZEOF_LONG 8 +# endif +# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 +# define CARES_PULL_SYS_TYPES_H 1 +# define CARES_PULL_SYS_SOCKET_H 1 +# endif + +#elif defined(TPF) +# define CARES_SIZEOF_LONG 8 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +/* ===================================== */ +/* KEEP MSVC THE PENULTIMATE ENTRY */ +/* ===================================== */ + +#elif defined(_MSC_VER) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +/* ===================================== */ +/* KEEP GENERIC GCC THE LAST ENTRY */ +/* ===================================== */ + +#elif defined(__GNUC__) +# if defined(__i386__) || defined(__ppc__) +# define CARES_SIZEOF_LONG 4 +# elif defined(__x86_64__) || defined(__ppc64__) +# define CARES_SIZEOF_LONG 8 +# endif +# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 +# define CARES_PULL_SYS_TYPES_H 1 +# define CARES_PULL_SYS_SOCKET_H 1 + +#else +# error "Unknown non-configure build target!" + Error Compilation_aborted_Unknown_non_configure_build_target +#endif + +/* CARES_PULL_SYS_TYPES_H is defined above when inclusion of header file */ +/* sys/types.h is required here to properly make type definitions below. */ +#ifdef CARES_PULL_SYS_TYPES_H +# include <sys/types.h> +#endif + +/* CARES_PULL_SYS_SOCKET_H is defined above when inclusion of header file */ +/* sys/socket.h is required here to properly make type definitions below. */ +#ifdef CARES_PULL_SYS_SOCKET_H +# include <sys/socket.h> +#endif + +/* Data type definition of ares_socklen_t. */ + +#ifdef CARES_TYPEOF_ARES_SOCKLEN_T + typedef CARES_TYPEOF_ARES_SOCKLEN_T ares_socklen_t; +#endif + +#endif /* __CARES_BUILD_H */ diff --git a/ares_build.h.in b/ares_build.h.in new file mode 100644 index 0000000..227782c --- /dev/null +++ b/ares_build.h.in @@ -0,0 +1,110 @@ +#ifndef __CARES_BUILD_H +#define __CARES_BUILD_H + + +/* Copyright (C) 2009 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, 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. + */ + +/* ================================================================ */ +/* NOTES FOR CONFIGURE CAPABLE SYSTEMS */ +/* ================================================================ */ + +/* + * NOTE 1: + * ------- + * + * Nothing in this file is intended to be modified or adjusted by the + * c-ares library user nor by the c-ares library builder. + * + * If you think that something actually needs to be changed, adjusted + * or fixed in this file, then, report it on the c-ares development + * mailing list: http://cool.haxx.se/mailman/listinfo/c-ares/ + * + * This header file shall only export symbols which are 'cares' or 'CARES' + * prefixed, otherwise public name space would be polluted. + * + * NOTE 2: + * ------- + * + * Right now you might be staring at file ares_build.h.in or ares_build.h, + * this is due to the following reason: + * + * On systems capable of running the configure script, the configure process + * will overwrite the distributed ares_build.h file with one that is suitable + * and specific to the library being configured and built, which is generated + * from the ares_build.h.in template file. + * + */ + +/* ================================================================ */ +/* DEFINITION OF THESE SYMBOLS SHALL NOT TAKE PLACE ANYWHERE ELSE */ +/* ================================================================ */ + +#ifdef CARES_SIZEOF_LONG +# error "CARES_SIZEOF_LONG shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_SIZEOF_LONG_already_defined +#endif + +#ifdef CARES_TYPEOF_ARES_SOCKLEN_T +# error "CARES_TYPEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_TYPEOF_ARES_SOCKLEN_T_already_defined +#endif + +#ifdef CARES_SIZEOF_ARES_SOCKLEN_T +# error "CARES_SIZEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_SIZEOF_ARES_SOCKLEN_T_already_defined +#endif + +/* ================================================================ */ +/* EXTERNAL INTERFACE SETTINGS FOR CONFIGURE CAPABLE SYSTEMS ONLY */ +/* ================================================================ */ + +/* Configure process defines this to 1 when it finds out that system */ +/* header file ws2tcpip.h must be included by the external interface. */ +#undef CARES_PULL_WS2TCPIP_H +#ifdef CARES_PULL_WS2TCPIP_H +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include <windows.h> +# include <winsock2.h> +# include <ws2tcpip.h> +#endif + +/* Configure process defines this to 1 when it finds out that system */ +/* header file sys/types.h must be included by the external interface. */ +#undef CARES_PULL_SYS_TYPES_H +#ifdef CARES_PULL_SYS_TYPES_H +# include <sys/types.h> +#endif + +/* Configure process defines this to 1 when it finds out that system */ +/* header file sys/socket.h must be included by the external interface. */ +#undef CARES_PULL_SYS_SOCKET_H +#ifdef CARES_PULL_SYS_SOCKET_H +# include <sys/socket.h> +#endif + +/* The size of `long', as computed by sizeof. */ +#undef CARES_SIZEOF_LONG + +/* Integral data type used for ares_socklen_t. */ +#undef CARES_TYPEOF_ARES_SOCKLEN_T + +/* The size of `ares_socklen_t', as computed by sizeof. */ +#undef CARES_SIZEOF_ARES_SOCKLEN_T + +/* Data type definition of ares_socklen_t. */ +typedef CARES_TYPEOF_ARES_SOCKLEN_T ares_socklen_t; + +#endif /* __CARES_BUILD_H */ diff --git a/ares_cancel.3 b/ares_cancel.3 new file mode 100644 index 0000000..ef10ec5 --- /dev/null +++ b/ares_cancel.3 @@ -0,0 +1,43 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_CANCEL 3 "31 March 2004" +.SH NAME +ares_cancel \- Cancel a resolve +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_cancel(ares_channel \fIchannel\fP) +.fi +.SH DESCRIPTION +The \fBares_cancel\fP function cancels all lookups/requests made on the the +name service channel identified by \fIchannel\fP. \fBares_cancel\fP invokes +the callbacks for each pending query on the channel, passing a status of +.BR ARES_ECANCELLED . +These calls give the callbacks a chance to clean up any state which +might have been stored in their arguments. +.SH SEE ALSO +.BR ares_init (3) +.BR ares_destroy (3) +.SH NOTES +This function was added in c-ares 1.2.0 + +c-ares 1.6.0 and earlier pass a status of +.BR ARES_ETIMEOUT +instead of +.BR ARES_ECANCELLED . +.SH AUTHOR +Dirk Manske diff --git a/ares_cancel.c b/ares_cancel.c new file mode 100644 index 0000000..eb790ae --- /dev/null +++ b/ares_cancel.c @@ -0,0 +1,63 @@ + +/* Copyright (C) 2004 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, 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. + */ + +#include "ares_setup.h" +#include <assert.h> +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" + +/* + * ares_cancel() cancels all ongoing requests/resolves that might be going on + * on the given channel. It does NOT kill the channel, use ares_destroy() for + * that. + */ +void ares_cancel(ares_channel channel) +{ + struct query *query; + struct list_node* list_head; + struct list_node* list_node; + int i; + + list_head = &(channel->all_queries); + for (list_node = list_head->next; list_node != list_head; ) + { + query = list_node->data; + list_node = list_node->next; /* since we're deleting the query */ + query->callback(query->arg, ARES_ECANCELLED, 0, NULL, 0); + ares__free_query(query); + } +#ifndef NDEBUG + /* Freeing the query should remove it from all the lists in which it sits, + * so all query lists should be empty now. + */ + assert(ares__is_list_empty(&(channel->all_queries))); + for (i = 0; i < ARES_QID_TABLE_SIZE; i++) + { + assert(ares__is_list_empty(&(channel->queries_by_qid[i]))); + } + for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++) + { + assert(ares__is_list_empty(&(channel->queries_by_timeout[i]))); + } +#endif + if (!(channel->flags & ARES_FLAG_STAYOPEN)) + { + if (channel->servers) + { + for (i = 0; i < channel->nservers; i++) + ares__close_sockets(channel, &channel->servers[i]); + } + } +} diff --git a/ares_cancel.pdf b/ares_cancel.pdf Binary files differnew file mode 100644 index 0000000..61ce6a3 --- /dev/null +++ b/ares_cancel.pdf diff --git a/ares_config.h.in b/ares_config.h.in new file mode 100644 index 0000000..c6c527f --- /dev/null +++ b/ares_config.h.in @@ -0,0 +1,515 @@ +/* ares_config.h.in. Generated from configure.ac by autoheader. */ + +/* Define if building universal (internal helper macro) */ +#undef AC_APPLE_UNIVERSAL_BUILD + +/* define this if ares is built for a big endian system */ +#undef ARES_BIG_ENDIAN + +/* when building as static part of libcurl */ +#undef BUILDING_LIBCURL + +/* when building c-ares library */ +#undef CARES_BUILDING_LIBRARY + +/* when not building a shared library */ +#undef CARES_STATICLIB + +/* Define to 1 to enable hiding of library internal symbols. */ +#undef CARES_SYMBOL_HIDING + +/* Definition to make a library symbol externally visible. */ +#undef CARES_SYMBOL_SCOPE_EXTERN + +/* if a /etc/inet dir is being used */ +#undef ETC_INET + +/* Define to the type qualifier of arg 1 for getnameinfo. */ +#undef GETNAMEINFO_QUAL_ARG1 + +/* Define to the type of arg 1 for getnameinfo. */ +#undef GETNAMEINFO_TYPE_ARG1 + +/* Define to the type of arg 2 for getnameinfo. */ +#undef GETNAMEINFO_TYPE_ARG2 + +/* Define to the type of args 4 and 6 for getnameinfo. */ +#undef GETNAMEINFO_TYPE_ARG46 + +/* Define to the type of arg 7 for getnameinfo. */ +#undef GETNAMEINFO_TYPE_ARG7 + +/* Specifies the number of arguments to getservbyport_r */ +#undef GETSERVBYPORT_R_ARGS + +/* Specifies the size of the buffer to pass to getservbyport_r */ +#undef GETSERVBYPORT_R_BUFSIZE + +/* Define to 1 if you have AF_INET6. */ +#undef HAVE_AF_INET6 + +/* Define to 1 if you have the <arpa/inet.h> header file. */ +#undef HAVE_ARPA_INET_H + +/* Define to 1 if you have the <arpa/nameser_compat.h> header file. */ +#undef HAVE_ARPA_NAMESER_COMPAT_H + +/* Define to 1 if you have the <arpa/nameser.h> header file. */ +#undef HAVE_ARPA_NAMESER_H + +/* Define to 1 if you have the <assert.h> header file. */ +#undef HAVE_ASSERT_H + +/* Define to 1 if you have the `bitncmp' function. */ +#undef HAVE_BITNCMP + +/* Define to 1 if bool is an available type. */ +#undef HAVE_BOOL_T + +/* Define to 1 if you have the clock_gettime function and monotonic timer. */ +#undef HAVE_CLOCK_GETTIME_MONOTONIC + +/* Define to 1 if you have the closesocket function. */ +#undef HAVE_CLOSESOCKET + +/* Define to 1 if you have the CloseSocket camel case function. */ +#undef HAVE_CLOSESOCKET_CAMEL + +/* Define to 1 if you have the connect function. */ +#undef HAVE_CONNECT + +/* Define to 1 if you have the <dlfcn.h> header file. */ +#undef HAVE_DLFCN_H + +/* Define to 1 if you have the <errno.h> header file. */ +#undef HAVE_ERRNO_H + +/* Define to 1 if you have the fcntl function. */ +#undef HAVE_FCNTL + +/* Define to 1 if you have the <fcntl.h> header file. */ +#undef HAVE_FCNTL_H + +/* Define to 1 if you have a working fcntl O_NONBLOCK function. */ +#undef HAVE_FCNTL_O_NONBLOCK + +/* Define to 1 if you have the freeaddrinfo function. */ +#undef HAVE_FREEADDRINFO + +/* Define to 1 if you have a working getaddrinfo function. */ +#undef HAVE_GETADDRINFO + +/* Define to 1 if the getaddrinfo function is threadsafe. */ +#undef HAVE_GETADDRINFO_THREADSAFE + +/* Define to 1 if you have the getenv function. */ +#undef HAVE_GETENV + +/* Define to 1 if you have the gethostbyaddr function. */ +#undef HAVE_GETHOSTBYADDR + +/* Define to 1 if you have the gethostbyname function. */ +#undef HAVE_GETHOSTBYNAME + +/* Define to 1 if you have the gethostname function. */ +#undef HAVE_GETHOSTNAME + +/* Define to 1 if you have the getnameinfo function. */ +#undef HAVE_GETNAMEINFO + +/* Define to 1 if you have the getservbyport_r function. */ +#undef HAVE_GETSERVBYPORT_R + +/* Define to 1 if you have the `gettimeofday' function. */ +#undef HAVE_GETTIMEOFDAY + +/* Define to 1 if you have the `if_indextoname' function. */ +#undef HAVE_IF_INDEXTONAME + +/* Define to 1 if you have a IPv6 capable working inet_net_pton function. */ +#undef HAVE_INET_NET_PTON + +/* Define to 1 if you have a IPv6 capable working inet_ntop function. */ +#undef HAVE_INET_NTOP + +/* Define to 1 if you have a IPv6 capable working inet_pton function. */ +#undef HAVE_INET_PTON + +/* Define to 1 if you have the <inttypes.h> header file. */ +#undef HAVE_INTTYPES_H + +/* Define to 1 if you have the ioctl function. */ +#undef HAVE_IOCTL + +/* Define to 1 if you have the ioctlsocket function. */ +#undef HAVE_IOCTLSOCKET + +/* Define to 1 if you have the IoctlSocket camel case function. */ +#undef HAVE_IOCTLSOCKET_CAMEL + +/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function. + */ +#undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO + +/* Define to 1 if you have a working ioctlsocket FIONBIO function. */ +#undef HAVE_IOCTLSOCKET_FIONBIO + +/* Define to 1 if you have a working ioctl FIONBIO function. */ +#undef HAVE_IOCTL_FIONBIO + +/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */ +#undef HAVE_IOCTL_SIOCGIFADDR + +/* Define to 1 if you have the `resolve' library (-lresolve). */ +#undef HAVE_LIBRESOLVE + +/* Define to 1 if you have the <limits.h> header file. */ +#undef HAVE_LIMITS_H + +/* if your compiler supports LL */ +#undef HAVE_LL + +/* Define to 1 if the compiler supports the 'long long' data type. */ +#undef HAVE_LONGLONG + +/* Define to 1 if you have the malloc.h header file. */ +#undef HAVE_MALLOC_H + +/* Define to 1 if you have the memory.h header file. */ +#undef HAVE_MEMORY_H + +/* Define to 1 if you have the MSG_NOSIGNAL flag. */ +#undef HAVE_MSG_NOSIGNAL + +/* Define to 1 if you have the <netdb.h> header file. */ +#undef HAVE_NETDB_H + +/* Define to 1 if you have the <netinet/in.h> header file. */ +#undef HAVE_NETINET_IN_H + +/* Define to 1 if you have the <netinet/tcp.h> header file. */ +#undef HAVE_NETINET_TCP_H + +/* Define to 1 if you have the <net/if.h> header file. */ +#undef HAVE_NET_IF_H + +/* Define to 1 if you have PF_INET6. */ +#undef HAVE_PF_INET6 + +/* Define to 1 if you have the recv function. */ +#undef HAVE_RECV + +/* Define to 1 if you have the recvfrom function. */ +#undef HAVE_RECVFROM + +/* Define to 1 if you have the send function. */ +#undef HAVE_SEND + +/* Define to 1 if you have the setsockopt function. */ +#undef HAVE_SETSOCKOPT + +/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */ +#undef HAVE_SETSOCKOPT_SO_NONBLOCK + +/* Define to 1 if you have the <signal.h> header file. */ +#undef HAVE_SIGNAL_H + +/* Define to 1 if sig_atomic_t is an available typedef. */ +#undef HAVE_SIG_ATOMIC_T + +/* Define to 1 if sig_atomic_t is already defined as volatile. */ +#undef HAVE_SIG_ATOMIC_T_VOLATILE + +/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */ +#undef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID + +/* Define to 1 if you have the socket function. */ +#undef HAVE_SOCKET + +/* Define to 1 if you have the <socket.h> header file. */ +#undef HAVE_SOCKET_H + +/* Define to 1 if you have the <stdbool.h> header file. */ +#undef HAVE_STDBOOL_H + +/* Define to 1 if you have the <stdint.h> header file. */ +#undef HAVE_STDINT_H + +/* Define to 1 if you have the <stdlib.h> header file. */ +#undef HAVE_STDLIB_H + +/* Define to 1 if you have the strcasecmp function. */ +#undef HAVE_STRCASECMP + +/* Define to 1 if you have the strcmpi function. */ +#undef HAVE_STRCMPI + +/* Define to 1 if you have the strdup function. */ +#undef HAVE_STRDUP + +/* Define to 1 if you have the stricmp function. */ +#undef HAVE_STRICMP + +/* Define to 1 if you have the <strings.h> header file. */ +#undef HAVE_STRINGS_H + +/* Define to 1 if you have the <string.h> header file. */ +#undef HAVE_STRING_H + +/* Define to 1 if you have the strncasecmp function. */ +#undef HAVE_STRNCASECMP + +/* Define to 1 if you have the strncmpi function. */ +#undef HAVE_STRNCMPI + +/* Define to 1 if you have the strnicmp function. */ +#undef HAVE_STRNICMP + +/* Define to 1 if you have the <stropts.h> header file. */ +#undef HAVE_STROPTS_H + +/* Define to 1 if you have struct addrinfo. */ +#undef HAVE_STRUCT_ADDRINFO + +/* Define to 1 if you have struct in6_addr. */ +#undef HAVE_STRUCT_IN6_ADDR + +/* Define to 1 if you have struct sockaddr_in6. */ +#undef HAVE_STRUCT_SOCKADDR_IN6 + +/* if struct sockaddr_storage is defined */ +#undef HAVE_STRUCT_SOCKADDR_STORAGE + +/* Define to 1 if you have the timeval struct. */ +#undef HAVE_STRUCT_TIMEVAL + +/* Define to 1 if you have the <sys/ioctl.h> header file. */ +#undef HAVE_SYS_IOCTL_H + +/* Define to 1 if you have the <sys/param.h> header file. */ +#undef HAVE_SYS_PARAM_H + +/* Define to 1 if you have the <sys/select.h> header file. */ +#undef HAVE_SYS_SELECT_H + +/* Define to 1 if you have the <sys/socket.h> header file. */ +#undef HAVE_SYS_SOCKET_H + +/* Define to 1 if you have the <sys/stat.h> header file. */ +#undef HAVE_SYS_STAT_H + +/* Define to 1 if you have the <sys/time.h> header file. */ +#undef HAVE_SYS_TIME_H + +/* Define to 1 if you have the <sys/types.h> header file. */ +#undef HAVE_SYS_TYPES_H + +/* Define to 1 if you have the <sys/uio.h> header file. */ +#undef HAVE_SYS_UIO_H + +/* Define to 1 if you have the <time.h> header file. */ +#undef HAVE_TIME_H + +/* Define to 1 if you have the <unistd.h> header file. */ +#undef HAVE_UNISTD_H + +/* Define to 1 if you have the windows.h header file. */ +#undef HAVE_WINDOWS_H + +/* Define to 1 if you have the winsock2.h header file. */ +#undef HAVE_WINSOCK2_H + +/* Define to 1 if you have the winsock.h header file. */ +#undef HAVE_WINSOCK_H + +/* Define to 1 if you have the writev function. */ +#undef HAVE_WRITEV + +/* Define to 1 if you have the ws2tcpip.h header file. */ +#undef HAVE_WS2TCPIP_H + +/* Define to the sub-directory in which libtool stores uninstalled libraries. + */ +#undef LT_OBJDIR + +/* Define to 1 if you are building a native Windows target. */ +#undef NATIVE_WINDOWS + +/* Define to 1 if you need the malloc.h header file even with stdlib.h */ +#undef NEED_MALLOC_H + +/* Define to 1 if you need the memory.h header file even with stdlib.h */ +#undef NEED_MEMORY_H + +/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */ +#undef NEED_REENTRANT + +/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */ +#undef NEED_THREAD_SAFE + +/* Define to 1 if your C compiler doesn't accept -c and -o together. */ +#undef NO_MINUS_C_MINUS_O + +/* cpu-machine-OS */ +#undef OS + +/* Name of package */ +#undef PACKAGE + +/* 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 + +/* a suitable file/device to read random data from */ +#undef RANDOM_FILE + +/* Define to the type qualifier pointed by arg 5 for recvfrom. */ +#undef RECVFROM_QUAL_ARG5 + +/* Define to the type of arg 1 for recvfrom. */ +#undef RECVFROM_TYPE_ARG1 + +/* Define to the type pointed by arg 2 for recvfrom. */ +#undef RECVFROM_TYPE_ARG2 + +/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */ +#undef RECVFROM_TYPE_ARG2_IS_VOID + +/* Define to the type of arg 3 for recvfrom. */ +#undef RECVFROM_TYPE_ARG3 + +/* Define to the type of arg 4 for recvfrom. */ +#undef RECVFROM_TYPE_ARG4 + +/* Define to the type pointed by arg 5 for recvfrom. */ +#undef RECVFROM_TYPE_ARG5 + +/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */ +#undef RECVFROM_TYPE_ARG5_IS_VOID + +/* Define to the type pointed by arg 6 for recvfrom. */ +#undef RECVFROM_TYPE_ARG6 + +/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */ +#undef RECVFROM_TYPE_ARG6_IS_VOID + +/* Define to the function return type for recvfrom. */ +#undef RECVFROM_TYPE_RETV + +/* Define to the type of arg 1 for recv. */ +#undef RECV_TYPE_ARG1 + +/* Define to the type of arg 2 for recv. */ +#undef RECV_TYPE_ARG2 + +/* Define to the type of arg 3 for recv. */ +#undef RECV_TYPE_ARG3 + +/* Define to the type of arg 4 for recv. */ +#undef RECV_TYPE_ARG4 + +/* Define to the function return type for recv. */ +#undef RECV_TYPE_RETV + +/* Define as the return type of signal handlers (`int' or `void'). */ +#undef RETSIGTYPE + +/* Define to the type qualifier of arg 2 for send. */ +#undef SEND_QUAL_ARG2 + +/* Define to the type of arg 1 for send. */ +#undef SEND_TYPE_ARG1 + +/* Define to the type of arg 2 for send. */ +#undef SEND_TYPE_ARG2 + +/* Define to the type of arg 3 for send. */ +#undef SEND_TYPE_ARG3 + +/* Define to the type of arg 4 for send. */ +#undef SEND_TYPE_ARG4 + +/* Define to the function return type for send. */ +#undef SEND_TYPE_RETV + +/* The size of `int', as computed by sizeof. */ +#undef SIZEOF_INT + +/* The size of `long', as computed by sizeof. */ +#undef SIZEOF_LONG + +/* The size of `size_t', as computed by sizeof. */ +#undef SIZEOF_SIZE_T + +/* The size of `struct in6_addr', as computed by sizeof. */ +#undef SIZEOF_STRUCT_IN6_ADDR + +/* The size of `struct in_addr', as computed by sizeof. */ +#undef SIZEOF_STRUCT_IN_ADDR + +/* The size of `time_t', as computed by sizeof. */ +#undef SIZEOF_TIME_T + +/* Define to 1 if you have the ANSI C header files. */ +#undef STDC_HEADERS + +/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */ +#undef TIME_WITH_SYS_TIME + +/* Define to disable non-blocking sockets. */ +#undef USE_BLOCKING_SOCKETS + +/* Version number of package */ +#undef VERSION + +/* Define to avoid automatic inclusion of winsock.h */ +#undef WIN32_LEAN_AND_MEAN + +/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most + significant byte first (like Motorola and SPARC, unlike Intel). */ +#if defined AC_APPLE_UNIVERSAL_BUILD +# if defined __BIG_ENDIAN__ +# define WORDS_BIGENDIAN 1 +# endif +#else +# ifndef WORDS_BIGENDIAN +# undef WORDS_BIGENDIAN +# endif +#endif + +/* Define to 1 if OS is AIX. */ +#ifndef _ALL_SOURCE +# undef _ALL_SOURCE +#endif + +/* Number of bits in a file offset, on hosts where this is settable. */ +#undef _FILE_OFFSET_BITS + +/* Define for large files, on AIX-style hosts. */ +#undef _LARGE_FILES + +/* Define to empty if `const' does not conform to ANSI C. */ +#undef const + +/* Type to use in place of in_addr_t when system does not provide it. */ +#undef in_addr_t + +/* Define to `unsigned int' if <sys/types.h> does not define. */ +#undef size_t + +/* the signed version of size_t */ +#undef ssize_t diff --git a/ares_data.c b/ares_data.c new file mode 100644 index 0000000..a2477be --- /dev/null +++ b/ares_data.c @@ -0,0 +1,190 @@ + +/* Copyright (C) 2009-2010 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + + +#include "ares_setup.h" + +#include <stddef.h> + +#include "ares.h" +#include "ares_data.h" +#include "ares_private.h" + + +/* +** ares_free_data() - c-ares external API function. +** +** This function must be used by the application to free data memory that +** has been internally allocated by some c-ares function and for which a +** pointer has already been returned to the calling application. The list +** of c-ares functions returning pointers that must be free'ed using this +** function is: +** +** ares_get_servers() +** ares_parse_srv_reply() +** ares_parse_txt_reply() +*/ + +void ares_free_data(void *dataptr) +{ + struct ares_data *ptr; + + if (!dataptr) + return; + +#ifdef __INTEL_COMPILER +# pragma warning(push) +# pragma warning(disable:1684) + /* 1684: conversion from pointer to same-sized integral type */ +#endif + + ptr = (void *)((char *)dataptr - offsetof(struct ares_data, data)); + +#ifdef __INTEL_COMPILER +# pragma warning(pop) +#endif + + if (ptr->mark != ARES_DATATYPE_MARK) + return; + + switch (ptr->type) + { + case ARES_DATATYPE_MX_REPLY: + + if (ptr->data.mx_reply.next) + ares_free_data(ptr->data.mx_reply.next); + if (ptr->data.mx_reply.host) + free(ptr->data.mx_reply.host); + break; + + case ARES_DATATYPE_SRV_REPLY: + + if (ptr->data.srv_reply.next) + ares_free_data(ptr->data.srv_reply.next); + if (ptr->data.srv_reply.host) + free(ptr->data.srv_reply.host); + break; + + case ARES_DATATYPE_TXT_REPLY: + + if (ptr->data.txt_reply.next) + ares_free_data(ptr->data.txt_reply.next); + if (ptr->data.txt_reply.txt) + free(ptr->data.txt_reply.txt); + break; + + case ARES_DATATYPE_ADDR_NODE: + + if (ptr->data.addr_node.next) + ares_free_data(ptr->data.addr_node.next); + break; + + default: + return; + } + + free(ptr); +} + + +/* +** ares_malloc_data() - c-ares internal helper function. +** +** This function allocates memory for a c-ares private ares_data struct +** for the specified ares_datatype, initializes c-ares private fields +** and zero initializes those which later might be used from the public +** API. It returns an interior pointer which can be passed by c-ares +** functions to the calling application, and that must be free'ed using +** c-ares external API function ares_free_data(). +*/ + +void *ares_malloc_data(ares_datatype type) +{ + struct ares_data *ptr; + + ptr = malloc(sizeof(struct ares_data)); + if (!ptr) + return NULL; + + switch (type) + { + case ARES_DATATYPE_MX_REPLY: + ptr->data.mx_reply.next = NULL; + ptr->data.mx_reply.host = NULL; + ptr->data.mx_reply.priority = 0; + break; + + case ARES_DATATYPE_SRV_REPLY: + ptr->data.srv_reply.next = NULL; + ptr->data.srv_reply.host = NULL; + ptr->data.srv_reply.priority = 0; + ptr->data.srv_reply.weight = 0; + ptr->data.srv_reply.port = 0; + break; + + case ARES_DATATYPE_TXT_REPLY: + ptr->data.txt_reply.next = NULL; + ptr->data.txt_reply.txt = NULL; + ptr->data.txt_reply.length = 0; + break; + + case ARES_DATATYPE_ADDR_NODE: + ptr->data.addr_node.next = NULL; + ptr->data.addr_node.family = 0; + memset(&ptr->data.addr_node.addrV6, 0, + sizeof(ptr->data.addr_node.addrV6)); + break; + + default: + free(ptr); + return NULL; + } + + ptr->mark = ARES_DATATYPE_MARK; + ptr->type = type; + + return &ptr->data; +} + + +/* +** ares_get_datatype() - c-ares internal helper function. +** +** This function returns the ares_datatype of the data stored in a +** private ares_data struct when given the public API pointer. +*/ + +ares_datatype ares_get_datatype(void * dataptr) +{ + struct ares_data *ptr; + +#ifdef __INTEL_COMPILER +# pragma warning(push) +# pragma warning(disable:1684) + /* 1684: conversion from pointer to same-sized integral type */ +#endif + + ptr = (void *)((char *)dataptr - offsetof(struct ares_data, data)); + +#ifdef __INTEL_COMPILER +# pragma warning(pop) +#endif + + if (ptr->mark == ARES_DATATYPE_MARK) + return ptr->type; + + return ARES_DATATYPE_UNKNOWN; +} diff --git a/ares_data.h b/ares_data.h new file mode 100644 index 0000000..de1608b --- /dev/null +++ b/ares_data.h @@ -0,0 +1,65 @@ + +/* Copyright (C) 2009-2010 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +typedef enum { + ARES_DATATYPE_UNKNOWN = 1, /* unknown data type - introduced in 1.7.0 */ + ARES_DATATYPE_SRV_REPLY, /* struct ares_srv_reply - introduced in 1.7.0 */ + ARES_DATATYPE_TXT_REPLY, /* struct ares_txt_reply - introduced in 1.7.0 */ + ARES_DATATYPE_ADDR_NODE, /* struct ares_addr_node - introduced in 1.7.1 */ + ARES_DATATYPE_MX_REPLY, /* struct ares_mx_reply - introduced in 1.7.2 */ +#if 0 + ARES_DATATYPE_ADDR6TTL, /* struct ares_addrttl */ + ARES_DATATYPE_ADDRTTL, /* struct ares_addr6ttl */ + ARES_DATATYPE_HOSTENT, /* struct hostent */ + ARES_DATATYPE_OPTIONS, /* struct ares_options */ +#endif + ARES_DATATYPE_LAST /* not used - introduced in 1.7.0 */ +} ares_datatype; + +#define ARES_DATATYPE_MARK 0xbead + +/* + * ares_data struct definition is internal to c-ares and shall not + * be exposed by the public API in order to allow future changes + * and extensions to it without breaking ABI. This will be used + * internally by c-ares as the container of multiple types of data + * dynamically allocated for which a reference will be returned + * to the calling application. + * + * c-ares API functions returning a pointer to c-ares internally + * allocated data will actually be returning an interior pointer + * into this ares_data struct. + * + * All this is 'invisible' to the calling application, the only + * requirement is that this kind of data must be free'ed by the + * calling application using ares_free_data() with the pointer + * it has received from a previous c-ares function call. + */ + +struct ares_data { + ares_datatype type; /* Actual data type identifier. */ + unsigned int mark; /* Private ares_data signature. */ + union { + struct ares_txt_reply txt_reply; + struct ares_srv_reply srv_reply; + struct ares_addr_node addr_node; + struct ares_mx_reply mx_reply; + } data; +}; + +void *ares_malloc_data(ares_datatype type); + +ares_datatype ares_get_datatype(void * dataptr); diff --git a/ares_destroy.3 b/ares_destroy.3 new file mode 100644 index 0000000..79171ec --- /dev/null +++ b/ares_destroy.3 @@ -0,0 +1,43 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_DESTROY 3 "7 December 2004" +.SH NAME +ares_destroy \- Destroy a resolver channel +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_destroy(ares_channel \fIchannel\fP) +.fi +.SH DESCRIPTION +The +.B ares_destroy +function destroys the name service channel identified by +.IR channel , +freeing all memory and closing all sockets used by the channel. +.B ares_destroy +invokes the callbacks for each pending query on the channel, passing a +status of +.BR ARES_EDESTRUCTION . +These calls give the callbacks a chance to clean up any state which +might have been stored in their arguments. +.SH SEE ALSO +.BR ares_init (3), +.BR ares_cancel (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_destroy.c b/ares_destroy.c new file mode 100644 index 0000000..5e274da --- /dev/null +++ b/ares_destroy.c @@ -0,0 +1,105 @@ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2004-2010 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" +#include <assert.h> +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" + +void ares_destroy_options(struct ares_options *options) +{ + int i; + + if(options->servers) + free(options->servers); + for (i = 0; i < options->ndomains; i++) + free(options->domains[i]); + free(options->domains); + if(options->sortlist) + free(options->sortlist); + free(options->lookups); +} + +void ares_destroy(ares_channel channel) +{ + int i; + struct query *query; + struct list_node* list_head; + struct list_node* list_node; + + if (!channel) + return; + + list_head = &(channel->all_queries); + for (list_node = list_head->next; list_node != list_head; ) + { + query = list_node->data; + list_node = list_node->next; /* since we're deleting the query */ + query->callback(query->arg, ARES_EDESTRUCTION, 0, NULL, 0); + ares__free_query(query); + } +#ifndef NDEBUG + /* Freeing the query should remove it from all the lists in which it sits, + * so all query lists should be empty now. + */ + assert(ares__is_list_empty(&(channel->all_queries))); + for (i = 0; i < ARES_QID_TABLE_SIZE; i++) + { + assert(ares__is_list_empty(&(channel->queries_by_qid[i]))); + } + for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++) + { + assert(ares__is_list_empty(&(channel->queries_by_timeout[i]))); + } +#endif + + ares__destroy_servers_state(channel); + + if (channel->domains) { + for (i = 0; i < channel->ndomains; i++) + free(channel->domains[i]); + free(channel->domains); + } + + if(channel->sortlist) + free(channel->sortlist); + + if (channel->lookups) + free(channel->lookups); + + free(channel); +} + +void ares__destroy_servers_state(ares_channel channel) +{ + struct server_state *server; + int i; + + if (channel->servers) + { + for (i = 0; i < channel->nservers; i++) + { + server = &channel->servers[i]; + ares__close_sockets(channel, server); + assert(ares__is_list_empty(&server->queries_to_server)); + } + free(channel->servers); + channel->servers = NULL; + } + channel->nservers = -1; +} diff --git a/ares_destroy.pdf b/ares_destroy.pdf Binary files differnew file mode 100644 index 0000000..f9092d5 --- /dev/null +++ b/ares_destroy.pdf diff --git a/ares_destroy_options.3 b/ares_destroy_options.3 new file mode 100644 index 0000000..3e564b2 --- /dev/null +++ b/ares_destroy_options.3 @@ -0,0 +1,38 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_DESTROY_OPTIONS 3 "1 June 2007" +.SH NAME +ares_destroy_options \- Destroy options initialized with ares_save_options +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_destroy_options(struct ares_options *\fIoptions\fP) +.fi +.SH DESCRIPTION +The +.B ares_destroy_options +function destroys the options struct identified by +.IR options , +freeing all memory allocated by ares_save_options. + +.SH SEE ALSO +.BR ares_save_options (3), +.BR ares_init_options (3) +.SH AUTHOR +Brad House +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_destroy_options.pdf b/ares_destroy_options.pdf Binary files differnew file mode 100644 index 0000000..b86f1cc --- /dev/null +++ b/ares_destroy_options.pdf diff --git a/ares_dns.h b/ares_dns.h new file mode 100644 index 0000000..6893c02 --- /dev/null +++ b/ares_dns.h @@ -0,0 +1,90 @@ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#ifndef ARES__DNS_H +#define ARES__DNS_H + +#define DNS__16BIT(p) (((p)[0] << 8) | (p)[1]) +#define DNS__32BIT(p) (((p)[0] << 24) | ((p)[1] << 16) | \ + ((p)[2] << 8) | (p)[3]) + +#define DNS__SET16BIT(p, v) (((p)[0] = (unsigned char)(((v) >> 8) & 0xff)), \ + ((p)[1] = (unsigned char)((v) & 0xff))) +#define DNS__SET32BIT(p, v) (((p)[0] = (unsigned char)(((v) >> 24) & 0xff)), \ + ((p)[1] = (unsigned char)(((v) >> 16) & 0xff)), \ + ((p)[2] = (unsigned char)(((v) >> 8) & 0xff)), \ + ((p)[3] = (unsigned char)((v) & 0xff))) + +#if 0 +/* we cannot use this approach on systems where we can't access 16/32 bit + data on un-aligned addresses */ +#define DNS__16BIT(p) ntohs(*(unsigned short*)(p)) +#define DNS__32BIT(p) ntohl(*(unsigned long*)(p)) +#define DNS__SET16BIT(p, v) *(unsigned short*)(p) = htons(v) +#define DNS__SET32BIT(p, v) *(unsigned long*)(p) = htonl(v) +#endif + +/* Macros for parsing a DNS header */ +#define DNS_HEADER_QID(h) DNS__16BIT(h) +#define DNS_HEADER_QR(h) (((h)[2] >> 7) & 0x1) +#define DNS_HEADER_OPCODE(h) (((h)[2] >> 3) & 0xf) +#define DNS_HEADER_AA(h) (((h)[2] >> 2) & 0x1) +#define DNS_HEADER_TC(h) (((h)[2] >> 1) & 0x1) +#define DNS_HEADER_RD(h) ((h)[2] & 0x1) +#define DNS_HEADER_RA(h) (((h)[3] >> 7) & 0x1) +#define DNS_HEADER_Z(h) (((h)[3] >> 4) & 0x7) +#define DNS_HEADER_RCODE(h) ((h)[3] & 0xf) +#define DNS_HEADER_QDCOUNT(h) DNS__16BIT((h) + 4) +#define DNS_HEADER_ANCOUNT(h) DNS__16BIT((h) + 6) +#define DNS_HEADER_NSCOUNT(h) DNS__16BIT((h) + 8) +#define DNS_HEADER_ARCOUNT(h) DNS__16BIT((h) + 10) + +/* Macros for constructing a DNS header */ +#define DNS_HEADER_SET_QID(h, v) DNS__SET16BIT(h, v) +#define DNS_HEADER_SET_QR(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 7)) +#define DNS_HEADER_SET_OPCODE(h, v) ((h)[2] |= (unsigned char)(((v) & 0xf) << 3)) +#define DNS_HEADER_SET_AA(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 2)) +#define DNS_HEADER_SET_TC(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 1)) +#define DNS_HEADER_SET_RD(h, v) ((h)[2] |= (unsigned char)((v) & 0x1)) +#define DNS_HEADER_SET_RA(h, v) ((h)[3] |= (unsigned char)(((v) & 0x1) << 7)) +#define DNS_HEADER_SET_Z(h, v) ((h)[3] |= (unsigned char)(((v) & 0x7) << 4)) +#define DNS_HEADER_SET_RCODE(h, v) ((h)[3] |= (unsigned char)((v) & 0xf)) +#define DNS_HEADER_SET_QDCOUNT(h, v) DNS__SET16BIT((h) + 4, v) +#define DNS_HEADER_SET_ANCOUNT(h, v) DNS__SET16BIT((h) + 6, v) +#define DNS_HEADER_SET_NSCOUNT(h, v) DNS__SET16BIT((h) + 8, v) +#define DNS_HEADER_SET_ARCOUNT(h, v) DNS__SET16BIT((h) + 10, v) + +/* Macros for parsing the fixed part of a DNS question */ +#define DNS_QUESTION_TYPE(q) DNS__16BIT(q) +#define DNS_QUESTION_CLASS(q) DNS__16BIT((q) + 2) + +/* Macros for constructing the fixed part of a DNS question */ +#define DNS_QUESTION_SET_TYPE(q, v) DNS__SET16BIT(q, v) +#define DNS_QUESTION_SET_CLASS(q, v) DNS__SET16BIT((q) + 2, v) + +/* Macros for parsing the fixed part of a DNS resource record */ +#define DNS_RR_TYPE(r) DNS__16BIT(r) +#define DNS_RR_CLASS(r) DNS__16BIT((r) + 2) +#define DNS_RR_TTL(r) DNS__32BIT((r) + 4) +#define DNS_RR_LEN(r) DNS__16BIT((r) + 8) + +/* Macros for constructing the fixed part of a DNS resource record */ +#define DNS_RR_SET_TYPE(r) DNS__SET16BIT(r, v) +#define DNS_RR_SET_CLASS(r) DNS__SET16BIT((r) + 2, v) +#define DNS_RR_SET_TTL(r) DNS__SET32BIT((r) + 4, v) +#define DNS_RR_SET_LEN(r) DNS__SET16BIT((r) + 8, v) + +#endif /* ARES__DNS_H */ diff --git a/ares_dup.3 b/ares_dup.3 new file mode 100644 index 0000000..935c5d9 --- /dev/null +++ b/ares_dup.3 @@ -0,0 +1,43 @@ +.\" +.\" Copyright (C) 2004-2009 by Daniel Stenberg +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_DUP 3 "26 May 2009" +.SH NAME +ares_dup \- Duplicate a resolver channel +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_dup(ares_channel *\fIdest\fP, ares_channel \fIsource\fP) +.fi +.SH DESCRIPTION +The \fBares_dup(3)\fP function duplicates an existing communications channel +for name service lookups. If it returns successfully, \fBares_dup(3)\fP will +set the variable pointed to by \fIdest\fP to a handle used to identify the +name service channel. The caller should invoke \fIares_destroy(3)\fP on the +handle when the channel is no longer needed. + +The \fBares_dup_options\fP function also initializes a name service channel, +with additional options set exactly as the \fIsource\fP channel has them +configured. +.SH SEE ALSO +.BR ares_destroy(3), +.BR ares_init(3), +.BR ares_library_init(3) +.SH AVAILABILITY +ares_dup(3) was added in c-ares 1.6.0 +.SH AUTHOR +Daniel Stenberg + diff --git a/ares_dup.pdf b/ares_dup.pdf Binary files differnew file mode 100644 index 0000000..f03eee3 --- /dev/null +++ b/ares_dup.pdf diff --git a/ares_expand_name.3 b/ares_expand_name.3 new file mode 100644 index 0000000..1761a9a --- /dev/null +++ b/ares_expand_name.3 @@ -0,0 +1,63 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_EXPAND_NAME 3 "20 Nov 2009" +.SH NAME +ares_expand_name \- Expand a DNS-encoded domain name +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_expand_name(const unsigned char *\fIencoded\fP, +.B const unsigned char *\fIabuf\fP, int \fIalen\fP, char **\fIs\fP, +.B long *\fIenclen\fP) +.fi +.SH DESCRIPTION +The +.B ares_expand_name +function converts a DNS-encoded domain name to a dot-separated C +string. The argument +.I encoded +gives the beginning of the encoded domain name, and the arguments +.I abuf +and +.I alen +give the containing message buffer (necessary for the processing of +indirection pointers within the encoded domain name). The result is +placed in a NUL-terminated allocated buffer, a pointer to which is +stored in the variable pointed to by +.IR s . +The length of the encoded name is stored in the variable pointed to by +.I enclen +so that the caller can advance past the encoded domain name to read +further data in the message. +.SH RETURN VALUES +.B ares_expand_name +can return any of the following values: +.TP 15 +.B ARES_SUCCESS +Expansion of the encoded name succeeded. +.TP 15 +.B ARES_EBADNAME +The encoded domain name was malformed and could not be expanded. +.TP 15 +.B ARES_ENOMEM +Memory was exhausted. +.SH SEE ALSO +.BR ares_mkquery (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_expand_name.c b/ares_expand_name.c new file mode 100644 index 0000000..e3eccd2 --- /dev/null +++ b/ares_expand_name.c @@ -0,0 +1,200 @@ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" /* for the memdebug */ + +static int name_length(const unsigned char *encoded, const unsigned char *abuf, + int alen); + +/* Expand an RFC1035-encoded domain name given by encoded. The + * containing message is given by abuf and alen. The result given by + * *s, which is set to a NUL-terminated allocated buffer. *enclen is + * set to the length of the encoded name (not the length of the + * expanded name; the goal is to tell the caller how many bytes to + * move forward to get past the encoded name). + * + * In the simple case, an encoded name is a series of labels, each + * composed of a one-byte length (limited to values between 0 and 63 + * inclusive) followed by the label contents. The name is terminated + * by a zero-length label. + * + * In the more complicated case, a label may be terminated by an + * indirection pointer, specified by two bytes with the high bits of + * the first byte (corresponding to INDIR_MASK) set to 11. With the + * two high bits of the first byte stripped off, the indirection + * pointer gives an offset from the beginning of the containing + * message with more labels to decode. Indirection can happen an + * arbitrary number of times, so we have to detect loops. + * + * Since the expanded name uses '.' as a label separator, we use + * backslashes to escape periods or backslashes in the expanded name. + */ + +int ares_expand_name(const unsigned char *encoded, const unsigned char *abuf, + int alen, char **s, long *enclen) +{ + int len, indir = 0; + char *q; + const unsigned char *p; + union { + ssize_t sig; + size_t uns; + } nlen; + + nlen.sig = name_length(encoded, abuf, alen); + if (nlen.sig < 0) + return ARES_EBADNAME; + + *s = malloc(nlen.uns + 1); + if (!*s) + return ARES_ENOMEM; + q = *s; + + if (nlen.uns == 0) { + /* RFC2181 says this should be ".": the root of the DNS tree. + * Since this function strips trailing dots though, it becomes "" + */ + q[0] = '\0'; + + /* indirect root label (like 0xc0 0x0c) is 2 bytes long (stupid, but + valid) */ + if ((*encoded & INDIR_MASK) == INDIR_MASK) + *enclen = 2; + else + *enclen = 1; /* the caller should move one byte to get past this */ + + return ARES_SUCCESS; + } + + /* No error-checking necessary; it was all done by name_length(). */ + p = encoded; + while (*p) + { + if ((*p & INDIR_MASK) == INDIR_MASK) + { + if (!indir) + { + *enclen = p + 2 - encoded; + indir = 1; + } + p = abuf + ((*p & ~INDIR_MASK) << 8 | *(p + 1)); + } + else + { + len = *p; + p++; + while (len--) + { + if (*p == '.' || *p == '\\') + *q++ = '\\'; + *q++ = *p; + p++; + } + *q++ = '.'; + } + } + if (!indir) + *enclen = p + 1 - encoded; + + /* Nuke the trailing period if we wrote one. */ + if (q > *s) + *(q - 1) = 0; + else + *q = 0; /* zero terminate */ + + return ARES_SUCCESS; +} + +/* Return the length of the expansion of an encoded domain name, or + * -1 if the encoding is invalid. + */ +static int name_length(const unsigned char *encoded, const unsigned char *abuf, + int alen) +{ + int n = 0, offset, indir = 0; + + /* Allow the caller to pass us abuf + alen and have us check for it. */ + if (encoded == abuf + alen) + return -1; + + while (*encoded) + { + if ((*encoded & INDIR_MASK) == INDIR_MASK) + { + /* Check the offset and go there. */ + if (encoded + 1 >= abuf + alen) + return -1; + offset = (*encoded & ~INDIR_MASK) << 8 | *(encoded + 1); + if (offset >= alen) + return -1; + encoded = abuf + offset; + + /* If we've seen more indirects than the message length, + * then there's a loop. + */ + if (++indir > alen) + return -1; + } + else + { + offset = *encoded; + if (encoded + offset + 1 >= abuf + alen) + return -1; + encoded++; + while (offset--) + { + n += (*encoded == '.' || *encoded == '\\') ? 2 : 1; + encoded++; + } + n++; + } + } + + /* If there were any labels at all, then the number of dots is one + * less than the number of labels, so subtract one. + */ + return (n) ? n - 1 : n; +} + +/* Like ares_expand_name but returns EBADRESP in case of invalid input. */ +int ares__expand_name_for_response(const unsigned char *encoded, + const unsigned char *abuf, int alen, + char **s, long *enclen) +{ + int status = ares_expand_name(encoded, abuf, alen, s, enclen); + if (status == ARES_EBADNAME) + status = ARES_EBADRESP; + return status; +} diff --git a/ares_expand_name.pdf b/ares_expand_name.pdf Binary files differnew file mode 100644 index 0000000..a32c101 --- /dev/null +++ b/ares_expand_name.pdf diff --git a/ares_expand_string.3 b/ares_expand_string.3 new file mode 100644 index 0000000..33dd7bd --- /dev/null +++ b/ares_expand_string.3 @@ -0,0 +1,61 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_EXPAND_NAME 3 "20 Nov 2009" +.SH NAME +ares_expand_string \- Expand a length encoded string +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_expand_string(const unsigned char *\fIencoded\fP, +.B const unsigned char *\fIabuf\fP, int \fIalen\fP, unsigned char **\fIs\fP, +.B long *\fIenclen\fP) +.fi +.SH DESCRIPTION +The +.B ares_expand_string +function converts a length encoded string to a NUL-terminated C +string. The argument +.I encoded +gives the beginning of the encoded string, and the arguments +.I abuf +and +.I alen +give the containing message buffer (necessary for the processing of +indirection pointers within the encoded domain name). The result is +placed in a NUL-terminated allocated buffer, a pointer to which is +stored in the variable pointed to by +.IR s . +The length of the encoded string is stored in the variable pointed to by +.I enclen +so that the caller can advance past the encoded string to read +further data in the message. +.SH RETURN VALUES +.B ares_expand_string +can return any of the following values: +.TP 15 +.B ARES_SUCCESS +Expansion of the encoded string succeeded. +.TP 15 +.B ARES_EBADSTR +The encoded string was malformed and could not be expanded. +.TP 15 +.B ARES_ENOMEM +Memory was exhausted. +.SH SEE ALSO +.BR ares_free_string (3) +.SH AUTHOR +Dominick Meglio diff --git a/ares_expand_string.c b/ares_expand_string.c new file mode 100644 index 0000000..f24cccf --- /dev/null +++ b/ares_expand_string.c @@ -0,0 +1,75 @@ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif + +#include <string.h> +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" /* for the memdebug */ + +/* Simply decodes a length-encoded character string. The first byte of the + * input is the length of the string to be returned and the bytes thereafter + * are the characters of the string. The returned result will be NULL + * terminated. + */ +int ares_expand_string(const unsigned char *encoded, + const unsigned char *abuf, + int alen, + unsigned char **s, + long *enclen) +{ + unsigned char *q; + union { + ssize_t sig; + size_t uns; + } elen; + + if (encoded == abuf+alen) + return ARES_EBADSTR; + + elen.uns = *encoded; + if (encoded+elen.sig+1 > abuf+alen) + return ARES_EBADSTR; + + encoded++; + + *s = malloc(elen.uns+1); + if (*s == NULL) + return ARES_ENOMEM; + q = *s; + strncpy((char *)q, (char *)encoded, elen.uns); + q[elen.uns] = '\0'; + + *s = q; + + *enclen = (long)(elen.sig+1); + + return ARES_SUCCESS; +} + diff --git a/ares_expand_string.pdf b/ares_expand_string.pdf Binary files differnew file mode 100644 index 0000000..37f5f20 --- /dev/null +++ b/ares_expand_string.pdf diff --git a/ares_fds.3 b/ares_fds.3 new file mode 100644 index 0000000..743e45e --- /dev/null +++ b/ares_fds.3 @@ -0,0 +1,61 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_FDS 3 "23 July 1998" +.SH NAME +ares_fds \- Get file descriptors to select on for name service +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_fds(ares_channel \fIchannel\fP, fd_set *\fIread_fds\fP, +.B fd_set *\fIwrite_fds\fP) +.fi +.SH DESCRIPTION +The +.B ares_fds +function retrieves the set of file descriptors which the calling +application should select on for reading and writing for the +processing of name service queries pending on the name service channel +identified by +.IR channel . +File descriptors will be set in the file descriptor sets pointed to by +.I read_fds +and +.I write_fds +as appropriate. File descriptors already set in +.I read_fds +and +.I write_fds +will remain set; initialization of the file descriptor sets +(using +.BR FD_ZERO ) +is the responsibility of the caller. +.SH RETURN VALUES +.B ares_fds +returns one greater than the number of the highest socket set in either +.I read_fds +or +.IR write_fds . +If no queries are active, +.B ares_fds +will return 0. +.SH SEE ALSO +.BR ares_timeout (3), +.BR ares_process (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_fds.c b/ares_fds.c new file mode 100644 index 0000000..ac5eedb --- /dev/null +++ b/ares_fds.c @@ -0,0 +1,63 @@ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif + +#include "ares.h" +#include "ares_nowarn.h" +#include "ares_private.h" + +int ares_fds(ares_channel channel, fd_set *read_fds, fd_set *write_fds) +{ + struct server_state *server; + ares_socket_t nfds; + int i; + + /* Are there any active queries? */ + int active_queries = !ares__is_list_empty(&(channel->all_queries)); + + nfds = 0; + for (i = 0; i < channel->nservers; i++) + { + server = &channel->servers[i]; + /* We only need to register interest in UDP sockets if we have + * outstanding queries. + */ + if (active_queries && server->udp_socket != ARES_SOCKET_BAD) + { + FD_SET(server->udp_socket, read_fds); + if (server->udp_socket >= nfds) + nfds = server->udp_socket + 1; + } + /* We always register for TCP events, because we want to know + * when the other side closes the connection, so we don't waste + * time trying to use a broken connection. + */ + if (server->tcp_socket != ARES_SOCKET_BAD) + { + FD_SET(server->tcp_socket, read_fds); + if (server->qhead) + FD_SET(server->tcp_socket, write_fds); + if (server->tcp_socket >= nfds) + nfds = server->tcp_socket + 1; + } + } + return (int)nfds; +} diff --git a/ares_fds.pdf b/ares_fds.pdf Binary files differnew file mode 100644 index 0000000..a3e6af0 --- /dev/null +++ b/ares_fds.pdf diff --git a/ares_free_data.3 b/ares_free_data.3 new file mode 100644 index 0000000..c6cadd5 --- /dev/null +++ b/ares_free_data.3 @@ -0,0 +1,72 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" Copyright (C) 2004-2010 by Daniel Stenberg +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_FREE_DATA 3 "5 March 2010" +.SH NAME +ares_free_data \- Free data allocated by several c-ares functions +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_free_data(void *\fIdataptr\fP) +.PP +.B cc file.c -lcares +.fi +.SH DESCRIPTION +.PP +The +.B ares_free_data(3) +function frees one or more data structures allocated and returned +by several c-ares functions. Specifically the data returned by the +following list of functions must be deallocated using this function. +.TP 5 +.B ares_get_servers(3) +When used to free the data returned by ares_get_servers(3) this +will free the whole linked list of ares_addr_node structures returned +by ares_get_servers(3). +.TP +.B ares_parse_srv_reply(3) +When used to free the data returned by ares_parse_srv_reply(3) this +will free the whole linked list of ares_srv_reply structures returned +by ares_parse_srv_reply(3), along with any additional storage +associated with those structures. +.TP +.B ares_parse_mx_reply(3) +When used to free the data returned by ares_parse_mx_reply(3) this +will free the whole linked list of ares_mx_reply structures returned +by ares_parse_mx_reply(3), along with any additional storage +associated with those structures. +.TP +.B ares_parse_txt_reply(3) +When used to free the data returned by ares_parse_txt_reply(3) this +will free the whole linked list of ares_txt_reply structures returned +by ares_parse_txt_reply(3), along with any additional storage +associated with those structures. +.SH RETURN VALUE +The ares_free_data() function does not return a value. +.SH AVAILABILITY +This function was first introduced in c-ares version 1.7.0. +.SH SEE ALSO +.BR ares_get_servers(3), +.BR ares_parse_srv_reply(3), +.BR ares_parse_mx_reply(3), +.BR ares_parse_txt_reply(3) +.SH AUTHOR +Yang Tse +.PP +Copyright 1998 by the Massachusetts Institute of Technology. +.br +Copyright (C) 2004-2010 by Daniel Stenberg. diff --git a/ares_free_data.pdf b/ares_free_data.pdf Binary files differnew file mode 100644 index 0000000..8a3f3d8 --- /dev/null +++ b/ares_free_data.pdf diff --git a/ares_free_hostent.3 b/ares_free_hostent.3 new file mode 100644 index 0000000..d692801 --- /dev/null +++ b/ares_free_hostent.3 @@ -0,0 +1,45 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_FREE_HOSTENT 3 "23 July 1998" +.SH NAME +ares_free_hostent \- Free host structure allocated by ares functions +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_free_hostent(struct hostent *\fIhost\fP) +.fi +.SH DESCRIPTION +The +.I ares_free_hostent +function frees a +.B struct hostent +allocated by one of the functions \fIares_parse_a_reply(3)\fP, +\fIares_parse_aaaa_reply(3)\fP, or \fIares_parse_ptr_reply(3)\fP. +.SH NOTES +It is not necessary (and is not correct) to free the host structure passed to +the callback functions for \fIares_gethostbyname(3)\fP or +\fIares_gethostbyaddr(3)\fP. c-ares will automatically free such host +structures when the callback returns. +.SH SEE ALSO +.BR ares_parse_a_reply (3), +.BR ares_parse_aaaa_reply (3), +.BR ares_parse_ptr_reply (3), +.BR ares_parse_ns_reply (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_free_hostent.c b/ares_free_hostent.c new file mode 100644 index 0000000..349d379 --- /dev/null +++ b/ares_free_hostent.c @@ -0,0 +1,42 @@ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" +#include <stdlib.h> + +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif + +#include "ares.h" +#include "ares_private.h" /* for memdebug */ + +void ares_free_hostent(struct hostent *host) +{ + char **p; + + if (!host) + return; + + free((char *)(host->h_name)); + for (p = host->h_aliases; *p; p++) + free(*p); + free(host->h_aliases); + free(host->h_addr_list[0]); /* no matter if there is one or many entries, + there is only one malloc for all of them */ + free(host->h_addr_list); + free(host); +} diff --git a/ares_free_hostent.pdf b/ares_free_hostent.pdf new file mode 100644 index 0000000..824c3ca --- /dev/null +++ b/ares_free_hostent.pdf @@ -0,0 +1,111 @@ +%PDF-1.4 +%Çì¢ +5 0 obj +<</Length 6 0 R/Filter /FlateDecode>> +stream +xœ¥UÛnÛF}çWЇ®k³»¼.PpS%V`K©Ä>v!ÐÔêÒJ¤Â]5ÐGõ;Ë‹(ÒrZ ‰ÜË™3sæÌ`”³Ÿú;Ý;og!¬µÃàþ¯//7@ý•îá—7EöE¼rªsB¡çA¼w„Ë) þêÛÙh¾x?wÓy<šÄOÄ}Àõ׃øOgȨàâ$"Pé[¯»wÈävð#…«Ü§¾t8^:äad¶! 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It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_FREE_STRING 3 "4 February 2004" +.SH NAME +ares_free_string \- Free strings allocated by ares functions +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_free_string(void *\fIstr\fP) +.fi +.SH DESCRIPTION +The +.I ares_free_string +function frees a string allocated by an ares function. +.SH SEE ALSO +.BR ares_mkquery (3) +.BR ares_expand_string (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 2000 by the Massachusetts Institute of Technology. diff --git a/ares_free_string.c b/ares_free_string.c new file mode 100644 index 0000000..e0545c1 --- /dev/null +++ b/ares_free_string.c @@ -0,0 +1,25 @@ + +/* Copyright 2000 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" + +void ares_free_string(void *str) +{ + free(str); +} diff --git a/ares_free_string.pdf b/ares_free_string.pdf Binary files differnew file mode 100644 index 0000000..807039b --- /dev/null +++ b/ares_free_string.pdf diff --git a/ares_get_servers.3 b/ares_get_servers.3 new file mode 100644 index 0000000..feea3a0 --- /dev/null +++ b/ares_get_servers.3 @@ -0,0 +1,78 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" Copyright (C) 2008-2010 by Daniel Stenberg +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_GET_SERVERS 3 "5 March 2010" +.SH NAME +ares_get_servers \- Retrieve name servers from an initialized ares_channel +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_get_servers(ares_channel \fIchannel\fP, struct ares_addr_node **\fIservers\fP) +.fi +.SH DESCRIPTION +The \fBares_get_servers(3)\fP function retrieves name servers configuration +from the +channel data identified by +.IR channel , +as a linked list of ares_addr_node structs storing a pointer to the first +node at the address specified by +.IR servers . + +Function caller may traverse the returned name server linked list, or may use +it directly as suitable input for the \fBares_set_servers(3)\fP function, but +shall not shrink or extend the list on its own. + +Each node of the name server linked list is stored in memory dynamically +allocated and managed by c-ares. It is the caller's responsibility to free +the resulting linked list, using \fBares_free_data(3)\fP , once the caller +does not need it any longer. + +This function is capable of handling IPv4 and IPv6 name server +addresses simultaneously, rendering \fBares_save_options(3)\fP with +optmask \fBARES_OPT_SERVERS\fP functionally obsolete except for +IPv4-only name server usage. + +.SH RETURN VALUES +.B ares_get_servers(3) +may return any of the following values: +.TP 15 +.B ARES_SUCCESS +The name servers configuration was successfuly retrieved +.TP 15 +.B ARES_ENOMEM +The memory was exhausted +.TP 15 +.B ARES_ENODATA +The channel data identified by +.IR channel +was invalid. +.SH SEE ALSO +.BR ares_set_servers (3), +.BR ares_init_options (3), +.BR ares_save_options(3) +.SH AVAILABILITY +ares_get_servers(3) was added in c-ares 1.7.1 +.SH AUTHOR +Implementation of this function and associated library internals are based +on code, comments and feedback provided in November and December of 2008 by +Daniel Stenberg, Gregor Jasny, Phil Blundell and Yang Tse, December 2009 +by Cedric Bail, February 2010 by Jakub Hrozek. On March 2010 Yang Tse +shuffled all the bits and this function popped out. +.br +Copyright 1998 by the Massachusetts Institute of Technology. +.br +Copyright (C) 2008-2010 by Daniel Stenberg diff --git a/ares_get_servers.pdf b/ares_get_servers.pdf Binary files differnew file mode 100644 index 0000000..20253f7 --- /dev/null +++ b/ares_get_servers.pdf diff --git a/ares_getenv.c b/ares_getenv.c new file mode 100644 index 0000000..1b2e85d --- /dev/null +++ b/ares_getenv.c @@ -0,0 +1,30 @@ + + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" +#include "ares_getenv.h" + +#ifndef HAVE_GETENV + +char *ares_getenv(const char *name) +{ +#ifdef _WIN32_WCE + return NULL; +#endif +} + +#endif diff --git a/ares_getenv.h b/ares_getenv.h new file mode 100644 index 0000000..6da6cc5 --- /dev/null +++ b/ares_getenv.h @@ -0,0 +1,26 @@ +#ifndef HEADER_CARES_GETENV_H +#define HEADER_CARES_GETENV_H + + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" + +#ifndef HAVE_GETENV +extern char *ares_getenv(const char *name); +#endif + +#endif /* HEADER_CARES_GETENV_H */ diff --git a/ares_gethostbyaddr.3 b/ares_gethostbyaddr.3 new file mode 100644 index 0000000..f589868 --- /dev/null +++ b/ares_gethostbyaddr.3 @@ -0,0 +1,101 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_GETHOSTBYADDR 3 "24 July 1998" +.SH NAME +ares_gethostbyaddr \- Initiate a host query by address +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B typedef void (*ares_host_callback)(void *\fIarg\fP, int \fIstatus\fP, +.B int \fItimeouts\fP, struct hostent *\fIhostent\fP) +.PP +.B void ares_gethostbyaddr(ares_channel \fIchannel\fP, const void *\fIaddr\fP, +.B int \fIaddrlen\fP, int \fIfamily\fP, ares_host_callback \fIcallback\fP, +.B void *\fIarg\fP) +.fi +.SH DESCRIPTION +The +.B ares_gethostbyaddr +function initiates a host query by address on the name service channel +identified by +.IR channel . +The parameters +.I addr +and +.I addrlen +give the address as a series of bytes, and +.I family +gives the type of address. When the query is complete or has failed, the ares +library will invoke \fIcallback\fP. Completion or failure of the query may +happen immediately, or may happen during a later call to +\fIares_process(3)\fP, \fIares_destroy(3)\fP or \fIares_cancel(3)\fP. +.PP +The callback argument +.I arg +is copied from the +.B ares_gethostbyaddr +argument +.IR arg . +The callback argument +.I status +indicates whether the query succeeded and, if not, how it failed. It +may have any of the following values: +.TP 19 +.B ARES_SUCCESS +The host lookup completed successfully. +.TP 19 +.B ARES_ENOTIMP +The ares library does not know how to look up addresses of type +.IR family . +.TP 19 +.B ARES_ENOTFOUND +The address +.I addr +was not found. +.TP 19 +.B ARES_ENOMEM +Memory was exhausted. +.TP 19 +.B ARES_EDESTRUCTION +The name service channel +.I channel +is being destroyed; the query will not be completed. +.PP +The callback argument +.I timeouts +reports how many times a query timed out during the execution of the +given request. +.PP +On successful completion of the query, the callback argument +.I hostent +points to a +.B struct hostent +containing the name of the host returned by the query. The callback +need not and should not attempt to free the memory pointed to by +.IR hostent ; +the ares library will free it when the callback returns. If the query +did not complete successfully, +.I hostent +will be +.BR NULL . +.SH SEE ALSO +.BR ares_process (3), +.BR ares_gethostbyname (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_gethostbyaddr.c b/ares_gethostbyaddr.c new file mode 100644 index 0000000..4b4c8a7 --- /dev/null +++ b/ares_gethostbyaddr.c @@ -0,0 +1,301 @@ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "ares.h" +#include "inet_net_pton.h" +#include "ares_platform.h" +#include "ares_private.h" + +#ifdef WATT32 +#undef WIN32 +#endif + +struct addr_query { + /* Arguments passed to ares_gethostbyaddr() */ + ares_channel channel; + struct ares_addr addr; + ares_host_callback callback; + void *arg; + + const char *remaining_lookups; + int timeouts; +}; + +static void next_lookup(struct addr_query *aquery); +static void addr_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen); +static void end_aquery(struct addr_query *aquery, int status, + struct hostent *host); +static int file_lookup(struct ares_addr *addr, struct hostent **host); +static void ptr_rr_name(char *name, const struct ares_addr *addr); + +void ares_gethostbyaddr(ares_channel channel, const void *addr, int addrlen, + int family, ares_host_callback callback, void *arg) +{ + struct addr_query *aquery; + + if (family != AF_INET && family != AF_INET6) + { + callback(arg, ARES_ENOTIMP, 0, NULL); + return; + } + + if ((family == AF_INET && addrlen != sizeof(aquery->addr.addrV4)) || + (family == AF_INET6 && addrlen != sizeof(aquery->addr.addrV6))) + { + callback(arg, ARES_ENOTIMP, 0, NULL); + return; + } + + aquery = malloc(sizeof(struct addr_query)); + if (!aquery) + { + callback(arg, ARES_ENOMEM, 0, NULL); + return; + } + aquery->channel = channel; + if (family == AF_INET) + memcpy(&aquery->addr.addrV4, addr, sizeof(aquery->addr.addrV4)); + else + memcpy(&aquery->addr.addrV6, addr, sizeof(aquery->addr.addrV6)); + aquery->addr.family = family; + aquery->callback = callback; + aquery->arg = arg; + aquery->remaining_lookups = channel->lookups; + aquery->timeouts = 0; + + next_lookup(aquery); +} + +static void next_lookup(struct addr_query *aquery) +{ + const char *p; + char name[128]; + int status; + struct hostent *host; + + for (p = aquery->remaining_lookups; *p; p++) + { + switch (*p) + { + case 'b': + ptr_rr_name(name, &aquery->addr); + aquery->remaining_lookups = p + 1; + ares_query(aquery->channel, name, C_IN, T_PTR, addr_callback, + aquery); + return; + case 'f': + status = file_lookup(&aquery->addr, &host); + + /* this status check below previously checked for !ARES_ENOTFOUND, + but we should not assume that this single error code is the one + that can occur, as that is in fact no longer the case */ + if (status == ARES_SUCCESS) + { + end_aquery(aquery, status, host); + return; + } + break; + } + } + end_aquery(aquery, ARES_ENOTFOUND, NULL); +} + +static void addr_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen) +{ + struct addr_query *aquery = (struct addr_query *) arg; + struct hostent *host; + size_t addrlen; + + aquery->timeouts += timeouts; + if (status == ARES_SUCCESS) + { + if (aquery->addr.family == AF_INET) + { + addrlen = sizeof(aquery->addr.addrV4); + status = ares_parse_ptr_reply(abuf, alen, &aquery->addr.addrV4, + (int)addrlen, AF_INET, &host); + } + else + { + addrlen = sizeof(aquery->addr.addrV6); + status = ares_parse_ptr_reply(abuf, alen, &aquery->addr.addrV6, + (int)addrlen, AF_INET6, &host); + } + end_aquery(aquery, status, host); + } + else if (status == ARES_EDESTRUCTION) + end_aquery(aquery, status, NULL); + else + next_lookup(aquery); +} + +static void end_aquery(struct addr_query *aquery, int status, + struct hostent *host) +{ + aquery->callback(aquery->arg, status, aquery->timeouts, host); + if (host) + ares_free_hostent(host); + free(aquery); +} + +static int file_lookup(struct ares_addr *addr, struct hostent **host) +{ + FILE *fp; + int status; + int error; + +#ifdef WIN32 + char PATH_HOSTS[MAX_PATH]; + win_platform platform; + + PATH_HOSTS[0] = '\0'; + + platform = ares__getplatform(); + + if (platform == WIN_NT) { + char tmp[MAX_PATH]; + HKEY hkeyHosts; + + if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, KEY_READ, + &hkeyHosts) == ERROR_SUCCESS) + { + DWORD dwLength = MAX_PATH; + RegQueryValueEx(hkeyHosts, DATABASEPATH, NULL, NULL, (LPBYTE)tmp, + &dwLength); + ExpandEnvironmentStrings(tmp, PATH_HOSTS, MAX_PATH); + RegCloseKey(hkeyHosts); + } + } + else if (platform == WIN_9X) + GetWindowsDirectory(PATH_HOSTS, MAX_PATH); + else + return ARES_ENOTFOUND; + + strcat(PATH_HOSTS, WIN_PATH_HOSTS); + +#elif defined(WATT32) + extern const char *_w32_GetHostsFile (void); + const char *PATH_HOSTS = _w32_GetHostsFile(); + + if (!PATH_HOSTS) + return ARES_ENOTFOUND; +#endif + + fp = fopen(PATH_HOSTS, "r"); + if (!fp) + { + error = ERRNO; + switch(error) + { + case ENOENT: + case ESRCH: + return ARES_ENOTFOUND; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", + PATH_HOSTS)); + *host = NULL; + return ARES_EFILE; + } + } + while ((status = ares__get_hostent(fp, addr->family, host)) == ARES_SUCCESS) + { + if (addr->family != (*host)->h_addrtype) + { + ares_free_hostent(*host); + continue; + } + if (addr->family == AF_INET) + { + if (memcmp((*host)->h_addr, &addr->addrV4, + sizeof(addr->addrV4)) == 0) + break; + } + else if (addr->family == AF_INET6) + { + if (memcmp((*host)->h_addr, &addr->addrV6, + sizeof(addr->addrV6)) == 0) + break; + } + ares_free_hostent(*host); + } + fclose(fp); + if (status == ARES_EOF) + status = ARES_ENOTFOUND; + if (status != ARES_SUCCESS) + *host = NULL; + return status; +} + +static void ptr_rr_name(char *name, const struct ares_addr *addr) +{ + if (addr->family == AF_INET) + { + unsigned long laddr = ntohl(addr->addrV4.s_addr); + unsigned long a1 = (laddr >> 24UL) & 0xFFUL; + unsigned long a2 = (laddr >> 16UL) & 0xFFUL; + unsigned long a3 = (laddr >> 8UL) & 0xFFUL; + unsigned long a4 = laddr & 0xFFUL; + sprintf(name, "%lu.%lu.%lu.%lu.in-addr.arpa", a4, a3, a2, a1); + } + else + { + unsigned char *bytes = (unsigned char *)&addr->addrV6; + /* There are too many arguments to do this in one line using + * minimally C89-compliant compilers */ + sprintf(name, + "%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.", + bytes[15]&0xf, bytes[15] >> 4, bytes[14]&0xf, bytes[14] >> 4, + bytes[13]&0xf, bytes[13] >> 4, bytes[12]&0xf, bytes[12] >> 4, + bytes[11]&0xf, bytes[11] >> 4, bytes[10]&0xf, bytes[10] >> 4, + bytes[9]&0xf, bytes[9] >> 4, bytes[8]&0xf, bytes[8] >> 4); + sprintf(name+strlen(name), + "%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.ip6.arpa", + bytes[7]&0xf, bytes[7] >> 4, bytes[6]&0xf, bytes[6] >> 4, + bytes[5]&0xf, bytes[5] >> 4, bytes[4]&0xf, bytes[4] >> 4, + bytes[3]&0xf, bytes[3] >> 4, bytes[2]&0xf, bytes[2] >> 4, + bytes[1]&0xf, bytes[1] >> 4, bytes[0]&0xf, bytes[0] >> 4); + } +} diff --git a/ares_gethostbyaddr.pdf b/ares_gethostbyaddr.pdf Binary files differnew file mode 100644 index 0000000..3c8e60b --- /dev/null +++ b/ares_gethostbyaddr.pdf diff --git a/ares_gethostbyname.3 b/ares_gethostbyname.3 new file mode 100644 index 0000000..a578a53 --- /dev/null +++ b/ares_gethostbyname.3 @@ -0,0 +1,105 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_GETHOSTBYNAME 3 "25 July 1998" +.SH NAME +ares_gethostbyname \- Initiate a host query by name +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B typedef void (*ares_host_callback)(void *\fIarg\fP, int \fIstatus\fP, +.B int \fItimeouts\fP, struct hostent *\fIhostent\fP) +.PP +.B void ares_gethostbyname(ares_channel \fIchannel\fP, const char *\fIname\fP, +.B int \fIfamily\fP, ares_host_callback \fIcallback\fP, void *\fIarg\fP) +.fi +.SH DESCRIPTION +The +.B ares_gethostbyname +function initiates a host query by name on the name service channel +identified by +.IR channel . +The parameter +.I name +gives the hostname as a NUL-terminated C string, and +.I family +gives the desired type of address for the resulting host entry. When the +query is complete or has failed, the ares library will invoke \fIcallback\fP. +Completion or failure of the query may happen immediately, or may happen +during a later call to \fIares_process(3)\fP, \fIares_destroy(3)\fP or +\fIares_cancel(3)\fP. +.PP +The callback argument +.I arg +is copied from the +.B ares_gethostbyname +argument +.IR arg . +The callback argument +.I status +indicates whether the query succeeded and, if not, how it failed. It +may have any of the following values: +.TP 19 +.B ARES_SUCCESS +The host lookup completed successfully. +.TP 19 +.B ARES_ENOTIMP +The ares library does not know how to find addresses of type +.IR family . +.TP 19 +.B ARES_EBADNAME +The hostname +.B name +is composed entirely of numbers and periods, but is not a valid +representation of an Internet address. +.TP 19 +.B ARES_ENOTFOUND +The address +.I addr +was not found. +.TP 19 +.B ARES_ENOMEM +Memory was exhausted. +.TP 19 +.B ARES_EDESTRUCTION +The name service channel +.I channel +is being destroyed; the query will not be completed. +.PP +The callback argument +.I timeouts +reports how many times a query timed out during the execution of the +given request. +.PP +On successful completion of the query, the callback argument +.I hostent +points to a +.B struct hostent +containing the name of the host returned by the query. The callback +need not and should not attempt to free the memory pointed to by +.IR hostent ; +the ares library will free it when the callback returns. If the query +did not complete successfully, +.I hostent +will be +.BR NULL . +.SH SEE ALSO +.BR ares_process (3), +.BR ares_gethostbyaddr (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_gethostbyname.c b/ares_gethostbyname.c new file mode 100644 index 0000000..ad89dc2 --- /dev/null +++ b/ares_gethostbyname.c @@ -0,0 +1,523 @@ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#ifdef HAVE_STRINGS_H +#include <strings.h> +#endif + +#include "ares.h" +#include "inet_net_pton.h" +#include "bitncmp.h" +#include "ares_platform.h" +#include "ares_private.h" + +#ifdef WATT32 +#undef WIN32 +#endif + +struct host_query { + /* Arguments passed to ares_gethostbyname() */ + ares_channel channel; + char *name; + ares_host_callback callback; + void *arg; + int sent_family; /* this family is what was is being used */ + int want_family; /* this family is what is asked for in the API */ + const char *remaining_lookups; + int timeouts; +}; + +static void next_lookup(struct host_query *hquery, int status_code); +static void host_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen); +static void end_hquery(struct host_query *hquery, int status, + struct hostent *host); +static int fake_hostent(const char *name, int family, + ares_host_callback callback, void *arg); +static int file_lookup(const char *name, int family, struct hostent **host); +static void sort_addresses(struct hostent *host, + const struct apattern *sortlist, int nsort); +static void sort6_addresses(struct hostent *host, + const struct apattern *sortlist, int nsort); +static int get_address_index(const struct in_addr *addr, + const struct apattern *sortlist, int nsort); +static int get6_address_index(const struct ares_in6_addr *addr, + const struct apattern *sortlist, int nsort); + +void ares_gethostbyname(ares_channel channel, const char *name, int family, + ares_host_callback callback, void *arg) +{ + struct host_query *hquery; + + /* Right now we only know how to look up Internet addresses - and unspec + means try both basically. */ + switch (family) { + case AF_INET: + case AF_INET6: + case AF_UNSPEC: + break; + default: + callback(arg, ARES_ENOTIMP, 0, NULL); + return; + } + + if (fake_hostent(name, family, callback, arg)) + return; + + /* Allocate and fill in the host query structure. */ + hquery = malloc(sizeof(struct host_query)); + if (!hquery) + { + callback(arg, ARES_ENOMEM, 0, NULL); + return; + } + hquery->channel = channel; + hquery->name = strdup(name); + hquery->want_family = family; + hquery->sent_family = -1; /* nothing is sent yet */ + if (!hquery->name) { + free(hquery); + callback(arg, ARES_ENOMEM, 0, NULL); + return; + } + hquery->callback = callback; + hquery->arg = arg; + hquery->remaining_lookups = channel->lookups; + hquery->timeouts = 0; + + /* Start performing lookups according to channel->lookups. */ + next_lookup(hquery, ARES_ECONNREFUSED /* initial error code */); +} + +static void next_lookup(struct host_query *hquery, int status_code) +{ + const char *p; + struct hostent *host; + int status = status_code; + + for (p = hquery->remaining_lookups; *p; p++) + { + switch (*p) + { + case 'b': + /* DNS lookup */ + hquery->remaining_lookups = p + 1; + if ((hquery->want_family == AF_INET6) || + (hquery->want_family == AF_UNSPEC)) { + /* if inet6 or unspec, start out with AAAA */ + hquery->sent_family = AF_INET6; + ares_search(hquery->channel, hquery->name, C_IN, T_AAAA, + host_callback, hquery); + } + else { + hquery->sent_family = AF_INET; + ares_search(hquery->channel, hquery->name, C_IN, T_A, + host_callback, hquery); + } + return; + + case 'f': + /* Host file lookup */ + status = file_lookup(hquery->name, hquery->want_family, &host); + + /* this status check below previously checked for !ARES_ENOTFOUND, + but we should not assume that this single error code is the one + that can occur, as that is in fact no longer the case */ + if (status == ARES_SUCCESS) + { + end_hquery(hquery, status, host); + return; + } + status = status_code; /* Use original status code */ + break; + } + } + end_hquery(hquery, status, NULL); +} + +static void host_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen) +{ + struct host_query *hquery = (struct host_query *) arg; + ares_channel channel = hquery->channel; + struct hostent *host = NULL; + + hquery->timeouts += timeouts; + if (status == ARES_SUCCESS) + { + if (hquery->sent_family == AF_INET) + { + status = ares_parse_a_reply(abuf, alen, &host, NULL, NULL); + if (host && channel->nsort) + sort_addresses(host, channel->sortlist, channel->nsort); + } + else if (hquery->sent_family == AF_INET6) + { + status = ares_parse_aaaa_reply(abuf, alen, &host, NULL, NULL); + if ((status == ARES_ENODATA || status == ARES_EBADRESP) && + hquery->want_family == AF_UNSPEC) { + /* The query returned something but either there were no AAAA + records (e.g. just CNAME) or the response was malformed. Try + looking up A instead. */ + hquery->sent_family = AF_INET; + ares_search(hquery->channel, hquery->name, C_IN, T_A, + host_callback, hquery); + return; + } + if (host && channel->nsort) + sort6_addresses(host, channel->sortlist, channel->nsort); + } + end_hquery(hquery, status, host); + } + else if ((status == ARES_ENODATA || status == ARES_EBADRESP || + status == ARES_ETIMEOUT) && (hquery->sent_family == AF_INET6 && + hquery->want_family == AF_UNSPEC)) + { + /* The AAAA query yielded no useful result. Now look up an A instead. */ + hquery->sent_family = AF_INET; + ares_search(hquery->channel, hquery->name, C_IN, T_A, host_callback, + hquery); + } + else if (status == ARES_EDESTRUCTION) + end_hquery(hquery, status, NULL); + else + next_lookup(hquery, status); +} + +static void end_hquery(struct host_query *hquery, int status, + struct hostent *host) +{ + hquery->callback(hquery->arg, status, hquery->timeouts, host); + if (host) + ares_free_hostent(host); + free(hquery->name); + free(hquery); +} + +/* If the name looks like an IP address, fake up a host entry, end the + * query immediately, and return true. Otherwise return false. + */ +static int fake_hostent(const char *name, int family, + ares_host_callback callback, void *arg) +{ + struct hostent hostent; + char *aliases[1] = { NULL }; + char *addrs[2]; + int result = 0; + struct in_addr in; + struct ares_in6_addr in6; + + if (family == AF_INET || family == AF_INET6) + { + /* It only looks like an IP address if it's all numbers and dots. */ + int numdots = 0, valid = 1; + const char *p; + for (p = name; *p; p++) + { + if (!ISDIGIT(*p) && *p != '.') { + valid = 0; + break; + } else if (*p == '.') { + numdots++; + } + } + + /* if we don't have 3 dots, it is illegal + * (although inet_addr doesn't think so). + */ + if (numdots != 3 || !valid) + result = 0; + else + result = ((in.s_addr = inet_addr(name)) == INADDR_NONE ? 0 : 1); + + if (result) + family = AF_INET; + } + if (family == AF_INET6) + result = (ares_inet_pton(AF_INET6, name, &in6) < 1 ? 0 : 1); + + if (!result) + return 0; + + if (family == AF_INET) + { + hostent.h_length = (int)sizeof(struct in_addr); + addrs[0] = (char *)∈ + } + else if (family == AF_INET6) + { + hostent.h_length = (int)sizeof(struct ares_in6_addr); + addrs[0] = (char *)&in6; + } + /* Duplicate the name, to avoid a constness violation. */ + hostent.h_name = strdup(name); + if (!hostent.h_name) + { + callback(arg, ARES_ENOMEM, 0, NULL); + return 1; + } + + /* Fill in the rest of the host structure and terminate the query. */ + addrs[1] = NULL; + hostent.h_aliases = aliases; + hostent.h_addrtype = family; + hostent.h_addr_list = addrs; + callback(arg, ARES_SUCCESS, 0, &hostent); + + free((char *)(hostent.h_name)); + return 1; +} + +/* This is an API method */ +int ares_gethostbyname_file(ares_channel channel, const char *name, + int family, struct hostent **host) +{ + int result; + + /* We only take the channel to ensure that ares_init() been called. */ + if(channel == NULL) + { + /* Anything will do, really. This seems fine, and is consistent with + other error cases. */ + *host = NULL; + return ARES_ENOTFOUND; + } + + /* Just chain to the internal implementation we use here; it's exactly + * what we want. + */ + result = file_lookup(name, family, host); + if(result != ARES_SUCCESS) + { + /* We guarantee a NULL hostent on failure. */ + *host = NULL; + } + return result; +} + +static int file_lookup(const char *name, int family, struct hostent **host) +{ + FILE *fp; + char **alias; + int status; + int error; + +#ifdef WIN32 + char PATH_HOSTS[MAX_PATH]; + win_platform platform; + + PATH_HOSTS[0] = '\0'; + + platform = ares__getplatform(); + + if (platform == WIN_NT) { + char tmp[MAX_PATH]; + HKEY hkeyHosts; + + if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, KEY_READ, + &hkeyHosts) == ERROR_SUCCESS) + { + DWORD dwLength = MAX_PATH; + RegQueryValueEx(hkeyHosts, DATABASEPATH, NULL, NULL, (LPBYTE)tmp, + &dwLength); + ExpandEnvironmentStrings(tmp, PATH_HOSTS, MAX_PATH); + RegCloseKey(hkeyHosts); + } + } + else if (platform == WIN_9X) + GetWindowsDirectory(PATH_HOSTS, MAX_PATH); + else + return ARES_ENOTFOUND; + + strcat(PATH_HOSTS, WIN_PATH_HOSTS); + +#elif defined(WATT32) + extern const char *_w32_GetHostsFile (void); + const char *PATH_HOSTS = _w32_GetHostsFile(); + + if (!PATH_HOSTS) + return ARES_ENOTFOUND; +#endif + + fp = fopen(PATH_HOSTS, "r"); + if (!fp) + { + error = ERRNO; + switch(error) + { + case ENOENT: + case ESRCH: + return ARES_ENOTFOUND; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", + PATH_HOSTS)); + *host = NULL; + return ARES_EFILE; + } + } + while ((status = ares__get_hostent(fp, family, host)) == ARES_SUCCESS) + { + if (strcasecmp((*host)->h_name, name) == 0) + break; + for (alias = (*host)->h_aliases; *alias; alias++) + { + if (strcasecmp(*alias, name) == 0) + break; + } + if (*alias) + break; + ares_free_hostent(*host); + } + fclose(fp); + if (status == ARES_EOF) + status = ARES_ENOTFOUND; + if (status != ARES_SUCCESS) + *host = NULL; + return status; +} + +static void sort_addresses(struct hostent *host, + const struct apattern *sortlist, int nsort) +{ + struct in_addr a1, a2; + int i1, i2, ind1, ind2; + + /* This is a simple insertion sort, not optimized at all. i1 walks + * through the address list, with the loop invariant that everything + * to the left of i1 is sorted. In the loop body, the value at i1 is moved + * back through the list (via i2) until it is in sorted order. + */ + for (i1 = 0; host->h_addr_list[i1]; i1++) + { + memcpy(&a1, host->h_addr_list[i1], sizeof(struct in_addr)); + ind1 = get_address_index(&a1, sortlist, nsort); + for (i2 = i1 - 1; i2 >= 0; i2--) + { + memcpy(&a2, host->h_addr_list[i2], sizeof(struct in_addr)); + ind2 = get_address_index(&a2, sortlist, nsort); + if (ind2 <= ind1) + break; + memcpy(host->h_addr_list[i2 + 1], &a2, sizeof(struct in_addr)); + } + memcpy(host->h_addr_list[i2 + 1], &a1, sizeof(struct in_addr)); + } +} + +/* Find the first entry in sortlist which matches addr. Return nsort + * if none of them match. + */ +static int get_address_index(const struct in_addr *addr, + const struct apattern *sortlist, + int nsort) +{ + int i; + + for (i = 0; i < nsort; i++) + { + if (sortlist[i].family != AF_INET) + continue; + if (sortlist[i].type == PATTERN_MASK) + { + if ((addr->s_addr & sortlist[i].mask.addr4.s_addr) + == sortlist[i].addrV4.s_addr) + break; + } + else + { + if (!ares_bitncmp(&addr->s_addr, &sortlist[i].addrV4.s_addr, + sortlist[i].mask.bits)) + break; + } + } + return i; +} + +static void sort6_addresses(struct hostent *host, + const struct apattern *sortlist, int nsort) +{ + struct ares_in6_addr a1, a2; + int i1, i2, ind1, ind2; + + /* This is a simple insertion sort, not optimized at all. i1 walks + * through the address list, with the loop invariant that everything + * to the left of i1 is sorted. In the loop body, the value at i1 is moved + * back through the list (via i2) until it is in sorted order. + */ + for (i1 = 0; host->h_addr_list[i1]; i1++) + { + memcpy(&a1, host->h_addr_list[i1], sizeof(struct ares_in6_addr)); + ind1 = get6_address_index(&a1, sortlist, nsort); + for (i2 = i1 - 1; i2 >= 0; i2--) + { + memcpy(&a2, host->h_addr_list[i2], sizeof(struct ares_in6_addr)); + ind2 = get6_address_index(&a2, sortlist, nsort); + if (ind2 <= ind1) + break; + memcpy(host->h_addr_list[i2 + 1], &a2, sizeof(struct ares_in6_addr)); + } + memcpy(host->h_addr_list[i2 + 1], &a1, sizeof(struct ares_in6_addr)); + } +} + +/* Find the first entry in sortlist which matches addr. Return nsort + * if none of them match. + */ +static int get6_address_index(const struct ares_in6_addr *addr, + const struct apattern *sortlist, + int nsort) +{ + int i; + + for (i = 0; i < nsort; i++) + { + if (sortlist[i].family != AF_INET6) + continue; + if (!ares_bitncmp(addr, + &sortlist[i].addrV6, + sortlist[i].mask.bits)) + break; + } + return i; +} diff --git a/ares_gethostbyname.pdf b/ares_gethostbyname.pdf Binary files differnew file mode 100644 index 0000000..1172e2f --- /dev/null +++ b/ares_gethostbyname.pdf diff --git a/ares_gethostbyname_file.3 b/ares_gethostbyname_file.3 new file mode 100644 index 0000000..8f59b41 --- /dev/null +++ b/ares_gethostbyname_file.3 @@ -0,0 +1,83 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_GETHOSTBYNAME 3 "25 July 1998" +.SH NAME +ares_gethostbyname_file \- Lookup a name in the system's hosts file +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_gethostbyname_file(ares_channel \fIchannel\fP, const char *\fIname\fP, +.B int \fIfamily\fP, struct hostent **host) +.fi +.SH DESCRIPTION +The +.B ares_gethostbyname_file +function performs a host lookup by name against the system's hosts file (or equivalent local hostname database). +The +.IR channel +parameter is required, but no asynchronous queries are performed. Instead, the +lookup is done via the same mechanism used to perform 'f' lookups +(see the +.I lookups +options field in \fIares_init_options(3)\fP). +The parameter +.I name +gives the hostname as a NUL-terminated C string, and +.I family +gives the desired type of address for the resulting host entry. +.PP +The return value indicates whether the query succeeded and, if not, how it +failed. It may have any of the following values: +.TP 19 +.B ARES_SUCCESS +The host lookup completed successfully and +.I host +now points to the result (and must be freed with \fIares_free_hostent(3)\fP). +.TP 19 +.B ARES_ENOTFOUND +The hostname +.I name +was not found. +.TP 19 +.B ARES_EFILE +There was a file I/O error while performing the lookup. +.TP 19 +.B ARES_ENOMEM +Memory was exhausted. +.PP +On successful completion of the query, the pointer pointed to by +.I host +points to a +.B struct hostent +containing the address of the host returned by the lookup. The user must +free the memory pointed to by +.IR host +when finished with it by calling \fIares_free_hostent(3)\fP. If the lookup did +not complete successfully, +.I host +will be +.BR NULL . +.SH AVAILABILITY +Added in c-ares 1.5.4 +.SH SEE ALSO +.BR ares_gethostbyname (3), +.BR ares_free_hostent (3), +.BR ares_init_options (3) +.SH AUTHOR +Brad Spencer +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_gethostbyname_file.pdf b/ares_gethostbyname_file.pdf Binary files differnew file mode 100644 index 0000000..b8f15aa --- /dev/null +++ b/ares_gethostbyname_file.pdf diff --git a/ares_getnameinfo.3 b/ares_getnameinfo.3 new file mode 100644 index 0000000..7e4990c --- /dev/null +++ b/ares_getnameinfo.3 @@ -0,0 +1,149 @@ +.\" +.\" Copyright 2005 by Dominick Meglio. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_GETNAMEINFO 3 "1 May 2009" +.SH NAME +ares_getnameinfo \- Address-to-nodename translation in protocol-independent manner +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B typedef void (*ares_nameinfo_callback)(void *\fIarg\fP, int \fIstatus\fP, +.B int \fItimeouts\fP, char *\fInode\fP, char *\fIservice\fP) +.PP +.B void ares_getnameinfo(ares_channel \fIchannel\fP, const struct sockaddr *\fIsa\fP, +.B ares_socklen_t \fIsalen\fP, int \fIflags\fP, ares_nameinfo_callback \fIcallback\fP, +.B void *\fIarg\fP) +.fi +.SH DESCRIPTION +The +.B ares_getnameinfo +function is defined for protocol-independent address translation. The function +is a combination of \fIares_gethostbyaddr(3)\fP and \fIgetservbyport(3)\fP. The function will +translate the address either by executing a host query on the name service channel +identified by +.IR channel +or it will attempt to resolve it locally if possible. +The parameters +.I sa +and +.I len +give the address as a sockaddr structure, and +.I flags +gives the options that the function will use. Valid flags are listed below: +.TP 19 +.B ARES_NI_NOFQDN +Only the nodename portion of the FQDN is returned for local hosts. +.TP 19 +.B ARES_NI_NUMERICHOST +The numeric form of the hostname is returned rather than the name. +.TP 19 +.B ARES_NI_NAMEREQD +An error is returned if the hostname cannot be found in the DNS. +.TP 19 +.B ARES_NI_NUMERICSERV +The numeric form of the service is returned rather than the name. +.TP 19 +.B ARES_NI_TCP +The service name is to be looked up for the TCP protocol. +.TP 19 +.B ARES_NI_UDP +The service name is to be looked up for the UDP protocol. +.TP 19 +.B ARES_NI_SCTP +The service name is to be looked up for the SCTP protocol. +.TP 19 +.B ARES_NI_DCCP +The service name is to be looked up for the DCCP protocol. +.TP 19 +.B ARES_NI_NUMERICSCOPE +The numeric form of the scope ID is returned rather than the name. +.TP 19 +.B ARES_NI_LOOKUPHOST +A hostname lookup is being requested. +.TP 19 +.B ARES_NI_LOOKUPSERVICE +A service name lookup is being requested. +.PP +When the query +is complete or has +failed, the ares library will invoke \fIcallback\fP. Completion or failure of +the query may happen immediately, or may happen during a later call to +\fIares_process(3)\fP, \fIares_destroy(3)\fP or \fIares_cancel(3)\fP. +.PP +The callback argument +.I arg +is copied from the +.B ares_getnameinfo +argument +.IR arg . +The callback argument +.I status +indicates whether the query succeeded and, if not, how it failed. It +may have any of the following values: +.TP 19 +.B ARES_SUCCESS +The host lookup completed successfully. +.TP 19 +.B ARES_ENOTIMP +The ares library does not know how to look up addresses of type +.IR family . +.TP 19 +.B ARES_ENOTFOUND +The address +.I addr +was not found. +.TP 19 +.B ARES_ENOMEM +Memory was exhausted. +.TP 19 +.B ARES_EDESTRUCTION +The name service channel +.I channel +is being destroyed; the query will not be completed. +.TP 19 +.B ARES_EBADFLAGS +The +.I flags +parameter contains an illegal value. +.PP +The callback argument +.I timeouts +reports how many times a query timed out during the execution of the +given request. +.PP +On successful completion of the query, the callback argument +.I node +contains a string representing the hostname (assuming +.B ARES_NI_LOOKUPHOST +was specified). Additionally, +.I service +contains a string representing the service name (assuming +.B ARES_NI_LOOKUPSERVICE +was specified). +If the query did not complete successfully, or one of the values +was not requested, +.I node +or +.I service +will be +.BR NULL . +.SH SEE ALSO +.BR ares_process (3), +.BR ares_getaddrinfo (3) +.SH AUTHOR +Dominick Meglio +.br +Copyright 2005 by Dominick Meglio. diff --git a/ares_getnameinfo.c b/ares_getnameinfo.c new file mode 100644 index 0000000..82e261d --- /dev/null +++ b/ares_getnameinfo.c @@ -0,0 +1,427 @@ + +/* Copyright 2005 by Dominick Meglio + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ +#include "ares_setup.h" + +#ifdef HAVE_GETSERVBYPORT_R +# if !defined(GETSERVBYPORT_R_ARGS) || \ + (GETSERVBYPORT_R_ARGS < 4) || (GETSERVBYPORT_R_ARGS > 6) +# error "you MUST specifiy a valid number of arguments for getservbyport_r" +# endif +#endif + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_NET_IF_H +#include <net/if.h> +#endif + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "ares.h" +#include "ares_ipv6.h" +#include "inet_ntop.h" +#include "ares_nowarn.h" +#include "ares_private.h" + +struct nameinfo_query { + ares_nameinfo_callback callback; + void *arg; + union { + struct sockaddr_in addr4; + struct sockaddr_in6 addr6; + } addr; + int family; + int flags; + int timeouts; +}; + +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID +#define IPBUFSIZ \ + (sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255") + IF_NAMESIZE) +#else +#define IPBUFSIZ \ + (sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")) +#endif + +static void nameinfo_callback(void *arg, int status, int timeouts, + struct hostent *host); +static char *lookup_service(unsigned short port, int flags, + char *buf, size_t buflen); +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID +static void append_scopeid(struct sockaddr_in6 *addr6, unsigned int scopeid, + char *buf, size_t buflen); +#endif +static char *ares_striendstr(const char *s1, const char *s2); + +void ares_getnameinfo(ares_channel channel, const struct sockaddr *sa, + ares_socklen_t salen, + int flags, ares_nameinfo_callback callback, void *arg) +{ + struct sockaddr_in *addr = NULL; + struct sockaddr_in6 *addr6 = NULL; + struct nameinfo_query *niquery; + unsigned int port = 0; + + /* Validate socket address family and length */ + if ((sa->sa_family == AF_INET) && + (salen == sizeof(struct sockaddr_in))) + { + addr = (struct sockaddr_in *)sa; + port = addr->sin_port; + } + else if ((sa->sa_family == AF_INET6) && + (salen == sizeof(struct sockaddr_in6))) + { + addr6 = (struct sockaddr_in6 *)sa; + port = addr6->sin6_port; + } + else + { + callback(arg, ARES_ENOTIMP, 0, NULL, NULL); + return; + } + + /* If neither, assume they want a host */ + if (!(flags & ARES_NI_LOOKUPSERVICE) && !(flags & ARES_NI_LOOKUPHOST)) + flags |= ARES_NI_LOOKUPHOST; + + /* All they want is a service, no need for DNS */ + if ((flags & ARES_NI_LOOKUPSERVICE) && !(flags & ARES_NI_LOOKUPHOST)) + { + char buf[33], *service; + + service = lookup_service((unsigned short)(port & 0xffff), + flags, buf, sizeof(buf)); + callback(arg, ARES_SUCCESS, 0, NULL, service); + return; + } + + /* They want a host lookup */ + if ((flags & ARES_NI_LOOKUPHOST)) + { + /* A numeric host can be handled without DNS */ + if ((flags & ARES_NI_NUMERICHOST)) + { + char ipbuf[IPBUFSIZ]; + char srvbuf[33]; + char *service = NULL; + ipbuf[0] = 0; + + /* Specifying not to lookup a host, but then saying a host + * is required has to be illegal. + */ + if (flags & ARES_NI_NAMEREQD) + { + callback(arg, ARES_EBADFLAGS, 0, NULL, NULL); + return; + } + if (salen == sizeof(struct sockaddr_in6)) + { + ares_inet_ntop(AF_INET6, &addr6->sin6_addr, ipbuf, IPBUFSIZ); + /* If the system supports scope IDs, use it */ +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID + append_scopeid(addr6, flags, ipbuf, sizeof(ipbuf)); +#endif + } + else + { + ares_inet_ntop(AF_INET, &addr->sin_addr, ipbuf, IPBUFSIZ); + } + /* They also want a service */ + if (flags & ARES_NI_LOOKUPSERVICE) + service = lookup_service((unsigned short)(port & 0xffff), + flags, srvbuf, sizeof(srvbuf)); + callback(arg, ARES_SUCCESS, 0, ipbuf, service); + return; + } + /* This is where a DNS lookup becomes necessary */ + else + { + niquery = malloc(sizeof(struct nameinfo_query)); + if (!niquery) + { + callback(arg, ARES_ENOMEM, 0, NULL, NULL); + return; + } + niquery->callback = callback; + niquery->arg = arg; + niquery->flags = flags; + niquery->timeouts = 0; + if (sa->sa_family == AF_INET) + { + niquery->family = AF_INET; + memcpy(&niquery->addr.addr4, addr, sizeof(struct in_addr)); + ares_gethostbyaddr(channel, &addr->sin_addr, + sizeof(struct in_addr), AF_INET, + nameinfo_callback, niquery); + } + else + { + niquery->family = AF_INET6; + memcpy(&niquery->addr.addr6, addr6, sizeof(struct ares_in6_addr)); + ares_gethostbyaddr(channel, &addr6->sin6_addr, + sizeof(struct ares_in6_addr), AF_INET6, + nameinfo_callback, niquery); + } + } + } +} + +static void nameinfo_callback(void *arg, int status, int timeouts, + struct hostent *host) +{ + struct nameinfo_query *niquery = (struct nameinfo_query *) arg; + char srvbuf[33]; + char *service = NULL; + + niquery->timeouts += timeouts; + if (status == ARES_SUCCESS) + { + /* They want a service too */ + if (niquery->flags & ARES_NI_LOOKUPSERVICE) + { + if (niquery->family == AF_INET) + service = lookup_service(niquery->addr.addr4.sin_port, + niquery->flags, srvbuf, sizeof(srvbuf)); + else + service = lookup_service(niquery->addr.addr6.sin6_port, + niquery->flags, srvbuf, sizeof(srvbuf)); + } + /* NOFQDN means we have to strip off the domain name portion. We do + this by determining our own domain name, then searching the string + for this domain name and removing it. + */ +#ifdef HAVE_GETHOSTNAME + if (niquery->flags & ARES_NI_NOFQDN) + { + char buf[255]; + char *domain; + gethostname(buf, 255); + if ((domain = strchr(buf, '.')) != NULL) + { + char *end = ares_striendstr(host->h_name, domain); + if (end) + *end = 0; + } + } +#endif + niquery->callback(niquery->arg, ARES_SUCCESS, niquery->timeouts, + (char *)(host->h_name), + service); + free(niquery); + return; + } + /* We couldn't find the host, but it's OK, we can use the IP */ + else if (status == ARES_ENOTFOUND && !(niquery->flags & ARES_NI_NAMEREQD)) + { + char ipbuf[IPBUFSIZ]; + if (niquery->family == AF_INET) + ares_inet_ntop(AF_INET, &niquery->addr.addr4.sin_addr, ipbuf, + IPBUFSIZ); + else + { + ares_inet_ntop(AF_INET6, &niquery->addr.addr6.sin6_addr, ipbuf, + IPBUFSIZ); +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID + append_scopeid(&niquery->addr.addr6, niquery->flags, ipbuf, + sizeof(ipbuf)); +#endif + } + /* They want a service too */ + if (niquery->flags & ARES_NI_LOOKUPSERVICE) + { + if (niquery->family == AF_INET) + service = lookup_service(niquery->addr.addr4.sin_port, + niquery->flags, srvbuf, sizeof(srvbuf)); + else + service = lookup_service(niquery->addr.addr6.sin6_port, + niquery->flags, srvbuf, sizeof(srvbuf)); + } + niquery->callback(niquery->arg, ARES_SUCCESS, niquery->timeouts, ipbuf, + service); + free(niquery); + return; + } + niquery->callback(niquery->arg, status, niquery->timeouts, NULL, NULL); + free(niquery); +} + +static char *lookup_service(unsigned short port, int flags, + char *buf, size_t buflen) +{ + const char *proto; + struct servent *sep; +#ifdef HAVE_GETSERVBYPORT_R + struct servent se; +#endif + char tmpbuf[4096]; + + if (port) + { + if (flags & ARES_NI_NUMERICSERV) + sep = NULL; + else + { + if (flags & ARES_NI_UDP) + proto = "udp"; + else if (flags & ARES_NI_SCTP) + proto = "sctp"; + else if (flags & ARES_NI_DCCP) + proto = "dccp"; + else + proto = "tcp"; +#ifdef HAVE_GETSERVBYPORT_R + sep = &se; + memset(tmpbuf, 0, sizeof(tmpbuf)); +#if GETSERVBYPORT_R_ARGS == 6 + if (getservbyport_r(port, proto, &se, (void *)tmpbuf, + sizeof(tmpbuf), &sep) != 0) + sep = NULL; +#elif GETSERVBYPORT_R_ARGS == 5 + sep = getservbyport_r(port, proto, &se, (void *)tmpbuf, + sizeof(tmpbuf)); +#elif GETSERVBYPORT_R_ARGS == 4 + if (getservbyport_r(port, proto, &se, (void *)tmpbuf) != 0) + sep = NULL; +#else + /* Lets just hope the OS uses TLS! */ + sep = getservbyport(port, proto); +#endif +#else + /* Lets just hope the OS uses TLS! */ +#if (defined(NETWARE) && !defined(__NOVELL_LIBC__)) + sep = getservbyport(port, (char*)proto); +#else + sep = getservbyport(port, proto); +#endif +#endif + } + if (sep && sep->s_name) + /* get service name */ + strcpy(tmpbuf, sep->s_name); + else + /* get port as a string */ + sprintf(tmpbuf, "%u", (unsigned int)ntohs(port)); + if (strlen(tmpbuf) < buflen) + /* return it if buffer big enough */ + strcpy(buf, tmpbuf); + else + /* avoid reusing previous one */ + buf[0] = '\0'; + return buf; + } + buf[0] = '\0'; + return NULL; +} + +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID +static void append_scopeid(struct sockaddr_in6 *addr6, unsigned int flags, + char *buf, size_t buflen) +{ +#ifdef HAVE_IF_INDEXTONAME + int is_ll, is_mcll; +#endif + static const char fmt_u[] = "%u"; + static const char fmt_lu[] = "%lu"; + char tmpbuf[IF_NAMESIZE + 2]; + size_t bufl; + const char *fmt = (sizeof(addr6->sin6_scope_id) > sizeof(unsigned int))? + fmt_lu:fmt_u; + + tmpbuf[0] = '%'; + +#ifdef HAVE_IF_INDEXTONAME + is_ll = IN6_IS_ADDR_LINKLOCAL(&addr6->sin6_addr); + is_mcll = IN6_IS_ADDR_MC_LINKLOCAL(&addr6->sin6_addr); + if ((flags & ARES_NI_NUMERICSCOPE) || + (!is_ll && !is_mcll)) + { + sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id); + } + else + { + if (if_indextoname(addr6->sin6_scope_id, &tmpbuf[1]) == NULL) + sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id); + } +#else + sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id); + (void) flags; +#endif + tmpbuf[IF_NAMESIZE + 1] = '\0'; + bufl = strlen(buf); + + if(bufl + strlen(tmpbuf) < buflen) + /* only append the scopeid string if it fits in the target buffer */ + strcpy(&buf[bufl], tmpbuf); +} +#endif + +/* Determines if s1 ends with the string in s2 (case-insensitive) */ +static char *ares_striendstr(const char *s1, const char *s2) +{ + const char *c1, *c2, *c1_begin; + int lo1, lo2; + size_t s1_len = strlen(s1), s2_len = strlen(s2); + + /* If the substr is longer than the full str, it can't match */ + if (s2_len > s1_len) + return NULL; + + /* Jump to the end of s1 minus the length of s2 */ + c1_begin = s1+s1_len-s2_len; + c1 = (const char *)c1_begin; + c2 = s2; + while (c2 < s2+s2_len) + { + lo1 = TOLOWER(*c1); + lo2 = TOLOWER(*c2); + if (lo1 != lo2) + return NULL; + else + { + c1++; + c2++; + } + } + if (c2 == c1 && c2 == NULL) + return (char *)c1_begin; + return NULL; +} diff --git a/ares_getnameinfo.pdf b/ares_getnameinfo.pdf Binary files differnew file mode 100644 index 0000000..1633a21 --- /dev/null +++ b/ares_getnameinfo.pdf diff --git a/ares_getopt.c b/ares_getopt.c new file mode 100644 index 0000000..1e02d08 --- /dev/null +++ b/ares_getopt.c @@ -0,0 +1,122 @@ +/* + * Original file name getopt.c Initial import into the c-ares source tree + * on 2007-04-11. Lifted from version 5.2 of the 'Open Mash' project with + * the modified BSD license, BSD license without the advertising clause. + * + */ + +/* + * getopt.c -- + * + * Standard UNIX getopt function. Code is from BSD. + * + * Copyright (c) 1987-2001 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: + * + * A. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * B. 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. + * C. Neither the names of the copyright holders 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 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(lint) + * static char sccsid[] = "@(#)getopt.c 8.2 (Berkeley) 4/2/94"; + * #endif + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "ares_getopt.h" + +int opterr = 1, /* if error message should be printed */ + optind = 1; /* index into parent argv vector */ +int optopt = 0; /* character checked for validity */ +static int optreset; /* reset getopt */ +char *optarg; /* argument associated with option */ + +#define BADCH (int)'?' +#define BADARG (int)':' +#define EMSG (char *)"" + +/* + * ares_getopt -- + * Parse argc/argv argument vector. + */ +int +ares_getopt(int nargc, char * const nargv[], const char *ostr) +{ + 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 (EOF); + } + if (place[1] && *++place == '-') { /* found "--" */ + ++optind; + place = EMSG; + return (EOF); + } + } /* option letter okay? */ + if ((optopt = (int)*place++) == (int)':' || + (oli = strchr(ostr, optopt)) == NULL) { + /* + * if the user didn't specify '-' as an option, + * assume it means EOF. + */ + if (optopt == (int)'-') + return (EOF); + if (!*place) + ++optind; + if (opterr && *ostr != ':') + (void)fprintf(stderr, + "%s: illegal option -- %c\n", __FILE__, 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", + __FILE__, optopt); + return (BADCH); + } + else /* white space */ + optarg = nargv[optind]; + place = EMSG; + ++optind; + } + return (optopt); /* dump back option letter */ +} diff --git a/ares_getopt.h b/ares_getopt.h new file mode 100644 index 0000000..63acb3b --- /dev/null +++ b/ares_getopt.h @@ -0,0 +1,53 @@ +#ifndef ARES_GETOPT_H +#define ARES_GETOPT_H + +/* + * Copyright (c) 1987-2001 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: + * + * A. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * B. 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. + * C. Neither the names of the copyright holders 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 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. + */ + + +int ares_getopt(int nargc, char * const nargv[], const char *ostr); + +#undef optarg +#undef optind +#undef opterr +#undef optopt +#undef optreset + +#define optarg ares_optarg +#define optind ares_optind +#define opterr ares_opterr +#define optopt ares_optopt +#define optreset ares_optreset + +extern char *optarg; +extern int optind; +extern int opterr; +extern int optopt; + +#endif /* ARES_GETOPT_H */ diff --git a/ares_getsock.3 b/ares_getsock.3 new file mode 100644 index 0000000..1373291 --- /dev/null +++ b/ares_getsock.3 @@ -0,0 +1,57 @@ +.\" +.\" Copyright 1998 by Daniel Stenberg +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_GETSOCK 3 "11 March 2010" +.SH NAME +ares_getsock \- get socket descriptors to wait on +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_getsock(ares_channel \fIchannel\fP, ares_socket_t *\fIsocks\fP, +.B int \fInumsocks\fP); +.fi +.SH DESCRIPTION +The +.B ares_getsock +function retrieves the set of socket descriptors which the calling +application should wait on for reading and/or writing for the +processing of name service queries pending on the name service channel +identified by +.IR channel . +Socket descriptors will be set in the socket descriptor array pointed to by +\fIsocks\fP. +\fInumsocks\fP is the size of the given array in number of ints. + +This function can only return information about up to 16 sockets. If more are +in use (however unlikely that is), they are simply not reported back. +.SH RETURN VALUES +\fBares_getsock\fP returns a bitmask for what actions to wait for on the +different sockets. The ares.h header file provides these convenience macros to +extract the information appropriately: + +.nf +#define ARES_GETSOCK_MAXNUM 16 /* ares_getsock() can return info about + this many sockets */ +#define ARES_GETSOCK_READABLE(bits,num) (bits & (1<< (num))) +#define ARES_GETSOCK_WRITABLE(bits,num) (bits & (1 << ((num) + \ + ARES_GETSOCK_MAXNUM))) +.fi +.SH NOTES +This function was added in c-ares 1.3.1 +.SH SEE ALSO +.BR ares_timeout (3), +.BR ares_fds (3), +.BR ares_process (3) diff --git a/ares_getsock.c b/ares_getsock.c new file mode 100644 index 0000000..72e467f --- /dev/null +++ b/ares_getsock.c @@ -0,0 +1,72 @@ + +/* Copyright (C) 2005 - 2010, Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, 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. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif + +#include "ares.h" +#include "ares_private.h" + +int ares_getsock(ares_channel channel, + ares_socket_t *socks, + int numsocks) /* size of the 'socks' array */ +{ + struct server_state *server; + int i; + int sockindex=0; + int bitmap = 0; + unsigned int setbits = 0xffffffff; + + /* Are there any active queries? */ + int active_queries = !ares__is_list_empty(&(channel->all_queries)); + + for (i = 0; + (i < channel->nservers) && (sockindex < ARES_GETSOCK_MAXNUM); + i++) + { + server = &channel->servers[i]; + /* We only need to register interest in UDP sockets if we have + * outstanding queries. + */ + if (active_queries && server->udp_socket != ARES_SOCKET_BAD) + { + if(sockindex >= numsocks) + break; + socks[sockindex] = server->udp_socket; + bitmap |= ARES_GETSOCK_READABLE(setbits, sockindex); + sockindex++; + } + /* We always register for TCP events, because we want to know + * when the other side closes the connection, so we don't waste + * time trying to use a broken connection. + */ + if (server->tcp_socket != ARES_SOCKET_BAD) + { + if(sockindex >= numsocks) + break; + socks[sockindex] = server->tcp_socket; + bitmap |= ARES_GETSOCK_READABLE(setbits, sockindex); + + if (server->qhead && active_queries) + /* then the tcp socket is also writable! */ + bitmap |= ARES_GETSOCK_WRITABLE(setbits, sockindex); + + sockindex++; + } + } + return bitmap; +} diff --git a/ares_getsock.pdf b/ares_getsock.pdf Binary files differnew file mode 100644 index 0000000..2154246 --- /dev/null +++ b/ares_getsock.pdf diff --git a/ares_init.3 b/ares_init.3 new file mode 100644 index 0000000..fb25306 --- /dev/null +++ b/ares_init.3 @@ -0,0 +1,223 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" Copyright (C) 2004-2010 by Daniel Stenberg +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, 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. +.\" +.TH ARES_INIT 3 "5 March 2010" +.SH NAME +ares_init, ares_init_options \- Initialize a resolver channel +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_init(ares_channel *\fIchannelptr\fP) +.B int ares_init_options(ares_channel *\fIchannelptr\fP, +.B struct ares_options *\fIoptions\fP, int \fIoptmask\fP) +.PP +.B cc file.c -lcares +.fi +.SH DESCRIPTION +The \fBares_init\fP function initializes a communications channel for name +service lookups. If it returns successfully, \fBares_init\fP will set the +variable pointed to by \fIchannelptr\fP to a handle used to identify the name +service channel. The caller should invoke +.BR ares_destroy (3) +on the handle when the channel is no longer needed. +.PP +The \fBares_init_options\fP function also initializes a name service channel, +with additional options useful for applications requiring more control over +name service configuration. The \fIoptmask\fP parameter specifies which fields +in the structure pointed to by \fIoptions\fP are set, as follows: +.TP 18 +.B ARES_OPT_FLAGS +.B int \fIflags\fP; +.br +Flags controlling the behavior of the resolver. See below for a +description of possible flag values. +.TP 18 +.B ARES_OPT_TIMEOUT +.B int \fItimeout\fP; +.br +The number of seconds each name server is given to respond to a query on the +first try. (After the first try, the timeout algorithm becomes more +complicated, but scales linearly with the value of \fItimeout\fP.) The +default is five seconds. This option is being deprecated by +\fIARES_OPT_TIMEOUTMS\fP starting in c-ares 1.5.2. +.TP 18 +.B ARES_OPT_TIMEOUTMS +.B int \fItimeout\fP; +.br +The number of milliseconds each name server is given to respond to a query on +the first try. (After the first try, the timeout algorithm becomes more +complicated, but scales linearly with the value of \fItimeout\fP.) The +default is five seconds. Note that this option is specified with the same +struct field as the former \fIARES_OPT_TIMEOUT\fP, it is but the option bits +that tell c-ares how to interpret the number. This option was added in c-ares +1.5.2. +.TP 18 +.B ARES_OPT_TRIES +.B int \fItries\fP; +.br +The number of tries the resolver will try contacting each name server +before giving up. The default is four tries. +.TP 18 +.B ARES_OPT_NDOTS +.B int \fIndots\fP; +.br +The number of dots which must be present in a domain name for it to be +queried for "as is" prior to querying for it with the default domain +extensions appended. The default value is 1 unless set otherwise by +resolv.conf or the RES_OPTIONS environment variable. +.TP 18 +.B ARES_OPT_PORT +.B unsigned short \fIport\fP; +.br +The port to use for queries (both TCP and UDP), in network byte order. +The default value is 53 (in network byte order), the standard name +service port. +.TP 18 +.B ARES_OPT_SERVERS +.B struct in_addr *\fIservers\fP; +.br +.B int \fInservers\fP; +.br +The list of IPv4 servers to contact, instead of the servers specified in +resolv.conf or the local named. In order to allow specification of either +IPv4 or IPv6 name servers, the +.BR ares_set_servers(3) +function must be used instead. +.TP 18 +.B ARES_OPT_DOMAINS +.B char **\fIdomains\fP; +.br +.B int \fIndomains\fP; +.br +The domains to search, instead of the domains specified in resolv.conf +or the domain derived from the kernel hostname variable. +.TP 18 +.B ARES_OPT_LOOKUPS +.B char *\fIlookups\fP; +.br +The lookups to perform for host queries. +.I lookups +should be set to a string of the characters "b" or "f", where "b" +indicates a DNS lookup and "f" indicates a lookup in the hosts file. +.TP 18 +.B ARES_OPT_SOCK_STATE_CB +.B void (*\fIsock_state_cb\fP)(void *data, int s, int read, int write); +.br +.B void *\fIsock_state_cb_data\fP; +.br +A callback function to be invoked when a socket changes state. +.I s +will be passed the socket whose state has changed; +.I read +will be set to true if the socket should listen for read events, and +.I write +will be set to true if the socket should listen for write events. +The value of +.I sock_state_cb_data +will be passed as the +.I data +argument. +.PP +The +.I flags +field should be the bitwise or of some subset of the following values: +.TP 23 +.B ARES_FLAG_USEVC +Always use TCP queries (the "virtual circuit") instead of UDP +queries. Normally, TCP is only used if a UDP query yields a truncated +result. +.TP 23 +.B ARES_FLAG_PRIMARY +Only query the first server in the list of servers to query. +.TP 23 +.B ARES_FLAG_IGNTC +If a truncated response to a UDP query is received, do not fall back +to TCP; simply continue on with the truncated response. +.TP 23 +.B ARES_FLAG_NORECURSE +Do not set the "recursion desired" bit on outgoing queries, so that the name +server being contacted will not try to fetch the answer from other servers if +it doesn't know the answer locally. Be aware that ares will not do the +recursion for you. Recursion must be handled by the application calling ares +if \fIARES_FLAG_NORECURSE\fP is set. +.TP 23 +.B ARES_FLAG_STAYOPEN +Do not close communications sockets when the number of active queries +drops to zero. +.TP 23 +.B ARES_FLAG_NOSEARCH +Do not use the default search domains; only query hostnames as-is or +as aliases. +.TP 23 +.B ARES_FLAG_NOALIASES +Do not honor the HOSTALIASES environment variable, which normally +specifies a file of hostname translations. +.TP 23 +.B ARES_FLAG_NOCHECKRESP +Do not discard responses with the SERVFAIL, NOTIMP, or REFUSED +response code or responses whose questions don't match the questions +in the request. Primarily useful for writing clients which might be +used to test or debug name servers. +.SH RETURN VALUES +.I ares_init +or +.I ares_init_options +can return any of the following values: +.TP 14 +.B ARES_SUCCESS +Initialization succeeded. +.TP 14 +.B ARES_EFILE +A configuration file could not be read. +.TP 14 +.B ARES_ENOMEM +The process's available memory was exhausted. +.TP 14 +.B ARES_ENOTINITIALIZED +c-ares library initialization not yet performed. +.SH NOTES +When initializing from +.B /etc/resolv.conf, +.BR ares_init (3) +reads the +.I domain +and +.I search +directives to allow lookups of short names relative to the domains +specified. The +.I domain +and +.I search +directives override one another. If more that one instance of either +.I domain +or +.I search +directives is specified, the last occurence wins. For more information, +please see the +.BR resolv.conf (5) +manual page. +.SH SEE ALSO +.BR ares_destroy(3), +.BR ares_dup(3), +.BR ares_library_init(3), +.BR ares_set_servers(3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. +.br +Copyright (C) 2004-2010 by Daniel Stenberg. diff --git a/ares_init.c b/ares_init.c new file mode 100644 index 0000000..44d4cf9 --- /dev/null +++ b/ares_init.c @@ -0,0 +1,1806 @@ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2007-2011 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, 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. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_PARAM_H +#include <sys/param.h> +#endif + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif + +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif + +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif + +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif + +#ifdef HAVE_ARPA_INET_H +#include <arpa/inet.h> +#endif + +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <time.h> + +#ifdef ANDROID +#include <sys/system_properties.h> +#endif + +#include "ares.h" +#include "inet_net_pton.h" +#include "ares_library_init.h" +#include "ares_nowarn.h" +#include "ares_platform.h" +#include "inet_ntop.h" +#include "ares_private.h" + +#ifdef WATT32 +#undef WIN32 /* Redefined in MingW/MSVC headers */ +#endif + +static int init_by_options(ares_channel channel, const struct ares_options *options, + int optmask); +static int init_by_environment(ares_channel channel); +static int init_by_resolv_conf(ares_channel channel); +static int init_by_defaults(ares_channel channel); + +#ifndef WATT32 +static int config_nameserver(struct server_state **servers, int *nservers, + char *str); +#endif +static int set_search(ares_channel channel, const char *str); +static int set_options(ares_channel channel, const char *str); +static const char *try_option(const char *p, const char *q, const char *opt); +static int init_id_key(rc4_key* key,int key_data_len); + +#if !defined(WIN32) && !defined(WATT32) +static int sortlist_alloc(struct apattern **sortlist, int *nsort, struct apattern *pat); +static int ip_addr(const char *s, ssize_t len, struct in_addr *addr); +static void natural_mask(struct apattern *pat); +static int config_domain(ares_channel channel, char *str); +static int config_lookup(ares_channel channel, const char *str, + const char *bindch, const char *filech); +static int config_sortlist(struct apattern **sortlist, int *nsort, + const char *str); +static char *try_config(char *s, const char *opt, char scc); +#endif + +#define ARES_CONFIG_CHECK(x) (x->lookups && x->nsort > -1 && \ + x->nservers > -1 && \ + x->ndomains > -1 && \ + x->ndots > -1 && x->timeout > -1 && \ + x->tries > -1) + +int ares_init(ares_channel *channelptr) +{ + return ares_init_options(channelptr, NULL, 0); +} + +int ares_init_options(ares_channel *channelptr, struct ares_options *options, + int optmask) +{ + ares_channel channel; + int i; + int status = ARES_SUCCESS; + struct timeval now; + +#ifdef CURLDEBUG + const char *env = getenv("CARES_MEMDEBUG"); + + if (env) + curl_memdebug(env); + env = getenv("CARES_MEMLIMIT"); + if (env) { + char *endptr; + long num = strtol(env, &endptr, 10); + if((endptr != env) && (endptr == env + strlen(env)) && (num > 0)) + curl_memlimit(num); + } +#endif + + if (ares_library_initialized() != ARES_SUCCESS) + return ARES_ENOTINITIALIZED; + + channel = malloc(sizeof(struct ares_channeldata)); + if (!channel) { + *channelptr = NULL; + return ARES_ENOMEM; + } + + now = ares__tvnow(); + + /* Set everything to distinguished values so we know they haven't + * been set yet. + */ + channel->flags = -1; + channel->timeout = -1; + channel->tries = -1; + channel->ndots = -1; + channel->rotate = -1; + channel->udp_port = -1; + channel->tcp_port = -1; + channel->socket_send_buffer_size = -1; + channel->socket_receive_buffer_size = -1; + channel->nservers = -1; + channel->ndomains = -1; + channel->nsort = -1; + channel->tcp_connection_generation = 0; + channel->lookups = NULL; + channel->domains = NULL; + channel->sortlist = NULL; + channel->servers = NULL; + channel->sock_state_cb = NULL; + channel->sock_state_cb_data = NULL; + channel->sock_create_cb = NULL; + channel->sock_create_cb_data = NULL; + + channel->last_server = 0; + channel->last_timeout_processed = (time_t)now.tv_sec; + + memset(&channel->local_dev_name, 0, sizeof(channel->local_dev_name)); + channel->local_ip4 = 0; + memset(&channel->local_ip6, 0, sizeof(channel->local_ip6)); + + /* Initialize our lists of queries */ + ares__init_list_head(&(channel->all_queries)); + for (i = 0; i < ARES_QID_TABLE_SIZE; i++) + { + ares__init_list_head(&(channel->queries_by_qid[i])); + } + for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++) + { + ares__init_list_head(&(channel->queries_by_timeout[i])); + } + + /* Initialize configuration by each of the four sources, from highest + * precedence to lowest. + */ + + if (status == ARES_SUCCESS) { + status = init_by_options(channel, options, optmask); + if (status != ARES_SUCCESS) + DEBUGF(fprintf(stderr, "Error: init_by_options failed: %s\n", + ares_strerror(status))); + } + if (status == ARES_SUCCESS) { + status = init_by_environment(channel); + if (status != ARES_SUCCESS) + DEBUGF(fprintf(stderr, "Error: init_by_environment failed: %s\n", + ares_strerror(status))); + } + if (status == ARES_SUCCESS) { + status = init_by_resolv_conf(channel); + if (status != ARES_SUCCESS) + DEBUGF(fprintf(stderr, "Error: init_by_resolv_conf failed: %s\n", + ares_strerror(status))); + } + + /* + * No matter what failed or succeeded, seed defaults to provide + * useful behavior for things that we missed. + */ + status = init_by_defaults(channel); + if (status != ARES_SUCCESS) + DEBUGF(fprintf(stderr, "Error: init_by_defaults failed: %s\n", + ares_strerror(status))); + + /* Generate random key */ + + if (status == ARES_SUCCESS) { + status = init_id_key(&channel->id_key, ARES_ID_KEY_LEN); + if (status == ARES_SUCCESS) + channel->next_id = ares__generate_new_id(&channel->id_key); + else + DEBUGF(fprintf(stderr, "Error: init_id_key failed: %s\n", + ares_strerror(status))); + } + + if (status != ARES_SUCCESS) + { + /* Something failed; clean up memory we may have allocated. */ + if (channel->servers) + free(channel->servers); + if (channel->domains) + { + for (i = 0; i < channel->ndomains; i++) + free(channel->domains[i]); + free(channel->domains); + } + if (channel->sortlist) + free(channel->sortlist); + if(channel->lookups) + free(channel->lookups); + free(channel); + return status; + } + + /* Trim to one server if ARES_FLAG_PRIMARY is set. */ + if ((channel->flags & ARES_FLAG_PRIMARY) && channel->nservers > 1) + channel->nservers = 1; + + ares__init_servers_state(channel); + + *channelptr = channel; + return ARES_SUCCESS; +} + +/* ares_dup() duplicates a channel handle with all its options and returns a + new channel handle */ +int ares_dup(ares_channel *dest, ares_channel src) +{ + struct ares_options opts; + struct ares_addr_node *servers; + int ipv6_nservers = 0; + int i, rc; + int optmask; + + *dest = NULL; /* in case of failure return NULL explicitly */ + + /* First get the options supported by the old ares_save_options() function, + which is most of them */ + rc = ares_save_options(src, &opts, &optmask); + if(rc) + return rc; + + /* Then create the new channel with those options */ + rc = ares_init_options(dest, &opts, optmask); + + /* destroy the options copy to not leak any memory */ + ares_destroy_options(&opts); + + if(rc) + return rc; + + /* Now clone the options that ares_save_options() doesn't support. */ + (*dest)->sock_create_cb = src->sock_create_cb; + (*dest)->sock_create_cb_data = src->sock_create_cb_data; + + strncpy((*dest)->local_dev_name, src->local_dev_name, sizeof(src->local_dev_name)); + (*dest)->local_ip4 = src->local_ip4; + memcpy((*dest)->local_ip6, src->local_ip6, sizeof(src->local_ip6)); + + /* Full name server cloning required when not all are IPv4 */ + for (i = 0; i < src->nservers; i++) + { + if (src->servers[i].addr.family != AF_INET) { + ipv6_nservers++; + break; + } + } + if (ipv6_nservers) { + rc = ares_get_servers(src, &servers); + if (rc != ARES_SUCCESS) + return rc; + rc = ares_set_servers(*dest, servers); + ares_free_data(servers); + if (rc != ARES_SUCCESS) + return rc; + } + + return ARES_SUCCESS; /* everything went fine */ +} + +/* Save options from initialized channel */ +int ares_save_options(ares_channel channel, struct ares_options *options, + int *optmask) +{ + int i, j; + int ipv4_nservers = 0; + + /* Zero everything out */ + memset(options, 0, sizeof(struct ares_options)); + + if (!ARES_CONFIG_CHECK(channel)) + return ARES_ENODATA; + + /* Traditionally the optmask wasn't saved in the channel struct so it was + recreated here. ROTATE is the first option that has no struct field of + its own in the public config struct */ + (*optmask) = (ARES_OPT_FLAGS|ARES_OPT_TRIES|ARES_OPT_NDOTS| + ARES_OPT_UDP_PORT|ARES_OPT_TCP_PORT|ARES_OPT_SOCK_STATE_CB| + ARES_OPT_SERVERS|ARES_OPT_DOMAINS|ARES_OPT_LOOKUPS| + ARES_OPT_SORTLIST|ARES_OPT_TIMEOUTMS) | + (channel->optmask & ARES_OPT_ROTATE); + + /* Copy easy stuff */ + options->flags = channel->flags; + + /* We return full millisecond resolution but that's only because we don't + set the ARES_OPT_TIMEOUT anymore, only the new ARES_OPT_TIMEOUTMS */ + options->timeout = channel->timeout; + options->tries = channel->tries; + options->ndots = channel->ndots; + options->udp_port = (unsigned short)channel->udp_port; + options->tcp_port = (unsigned short)channel->tcp_port; + options->sock_state_cb = channel->sock_state_cb; + options->sock_state_cb_data = channel->sock_state_cb_data; + + /* Copy IPv4 servers */ + if (channel->nservers) { + for (i = 0; i < channel->nservers; i++) + { + if (channel->servers[i].addr.family == AF_INET) + ipv4_nservers++; + } + if (ipv4_nservers) { + options->servers = malloc(ipv4_nservers * sizeof(struct in_addr)); + if (!options->servers) + return ARES_ENOMEM; + for (i = j = 0; i < channel->nservers; i++) + { + if (channel->servers[i].addr.family == AF_INET) + memcpy(&options->servers[j++], + &channel->servers[i].addr.addrV4, + sizeof(channel->servers[i].addr.addrV4)); + } + } + } + options->nservers = ipv4_nservers; + + /* copy domains */ + if (channel->ndomains) { + options->domains = malloc(channel->ndomains * sizeof(char *)); + if (!options->domains) + return ARES_ENOMEM; + + for (i = 0; i < channel->ndomains; i++) + { + options->ndomains = i; + options->domains[i] = strdup(channel->domains[i]); + if (!options->domains[i]) + return ARES_ENOMEM; + } + } + options->ndomains = channel->ndomains; + + /* copy lookups */ + if (channel->lookups) { + options->lookups = strdup(channel->lookups); + if (!options->lookups && channel->lookups) + return ARES_ENOMEM; + } + + /* copy sortlist */ + if (channel->nsort) { + options->sortlist = malloc(channel->nsort * sizeof(struct apattern)); + if (!options->sortlist) + return ARES_ENOMEM; + for (i = 0; i < channel->nsort; i++) + options->sortlist[i] = channel->sortlist[i]; + } + options->nsort = channel->nsort; + + return ARES_SUCCESS; +} + +static int init_by_options(ares_channel channel, + const struct ares_options *options, + int optmask) +{ + int i; + + /* Easy stuff. */ + if ((optmask & ARES_OPT_FLAGS) && channel->flags == -1) + channel->flags = options->flags; + if ((optmask & ARES_OPT_TIMEOUTMS) && channel->timeout == -1) + channel->timeout = options->timeout; + else if ((optmask & ARES_OPT_TIMEOUT) && channel->timeout == -1) + channel->timeout = options->timeout * 1000; + if ((optmask & ARES_OPT_TRIES) && channel->tries == -1) + channel->tries = options->tries; + if ((optmask & ARES_OPT_NDOTS) && channel->ndots == -1) + channel->ndots = options->ndots; + if ((optmask & ARES_OPT_ROTATE) && channel->rotate == -1) + channel->rotate = 1; + if ((optmask & ARES_OPT_UDP_PORT) && channel->udp_port == -1) + channel->udp_port = options->udp_port; + if ((optmask & ARES_OPT_TCP_PORT) && channel->tcp_port == -1) + channel->tcp_port = options->tcp_port; + if ((optmask & ARES_OPT_SOCK_STATE_CB) && channel->sock_state_cb == NULL) + { + channel->sock_state_cb = options->sock_state_cb; + channel->sock_state_cb_data = options->sock_state_cb_data; + } + if ((optmask & ARES_OPT_SOCK_SNDBUF) + && channel->socket_send_buffer_size == -1) + channel->socket_send_buffer_size = options->socket_send_buffer_size; + if ((optmask & ARES_OPT_SOCK_RCVBUF) + && channel->socket_receive_buffer_size == -1) + channel->socket_receive_buffer_size = options->socket_receive_buffer_size; + + /* Copy the IPv4 servers, if given. */ + if ((optmask & ARES_OPT_SERVERS) && channel->nservers == -1) + { + /* Avoid zero size allocations at any cost */ + if (options->nservers > 0) + { + channel->servers = + malloc(options->nservers * sizeof(struct server_state)); + if (!channel->servers) + return ARES_ENOMEM; + for (i = 0; i < options->nservers; i++) + { + channel->servers[i].addr.family = AF_INET; + memcpy(&channel->servers[i].addr.addrV4, + &options->servers[i], + sizeof(channel->servers[i].addr.addrV4)); + } + } + channel->nservers = options->nservers; + } + + /* Copy the domains, if given. Keep channel->ndomains consistent so + * we can clean up in case of error. + */ + if ((optmask & ARES_OPT_DOMAINS) && channel->ndomains == -1) + { + /* Avoid zero size allocations at any cost */ + if (options->ndomains > 0) + { + channel->domains = malloc(options->ndomains * sizeof(char *)); + if (!channel->domains) + return ARES_ENOMEM; + for (i = 0; i < options->ndomains; i++) + { + channel->ndomains = i; + channel->domains[i] = strdup(options->domains[i]); + if (!channel->domains[i]) + return ARES_ENOMEM; + } + } + channel->ndomains = options->ndomains; + } + + /* Set lookups, if given. */ + if ((optmask & ARES_OPT_LOOKUPS) && !channel->lookups) + { + channel->lookups = strdup(options->lookups); + if (!channel->lookups) + return ARES_ENOMEM; + } + + /* copy sortlist */ + if ((optmask & ARES_OPT_SORTLIST) && (channel->nsort == -1) && + (options->nsort>0)) { + channel->sortlist = malloc(options->nsort * sizeof(struct apattern)); + if (!channel->sortlist) + return ARES_ENOMEM; + for (i = 0; i < options->nsort; i++) + channel->sortlist[i] = options->sortlist[i]; + channel->nsort = options->nsort; + } + + channel->optmask = optmask; + + return ARES_SUCCESS; +} + +static int init_by_environment(ares_channel channel) +{ + const char *localdomain, *res_options; + int status; + + localdomain = getenv("LOCALDOMAIN"); + if (localdomain && channel->ndomains == -1) + { + status = set_search(channel, localdomain); + if (status != ARES_SUCCESS) + return status; + } + + res_options = getenv("RES_OPTIONS"); + if (res_options) + { + status = set_options(channel, res_options); + if (status != ARES_SUCCESS) + return status; + } + + return ARES_SUCCESS; +} + +#ifdef WIN32 +/* + * Warning: returns a dynamically allocated buffer, the user MUST + * use free() if the function returns 1 + */ +static int get_res_nt(HKEY hKey, const char *subkey, char **obuf) +{ + /* Test for the size we need */ + DWORD size = 0; + int result; + + result = RegQueryValueEx(hKey, subkey, 0, NULL, NULL, &size); + if ((result != ERROR_SUCCESS && result != ERROR_MORE_DATA) || !size) + return 0; + *obuf = malloc(size+1); + if (!*obuf) + return 0; + + if (RegQueryValueEx(hKey, subkey, 0, NULL, + (LPBYTE)*obuf, &size) != ERROR_SUCCESS) + { + free(*obuf); + return 0; + } + if (size == 1) + { + free(*obuf); + return 0; + } + return 1; +} + +static int get_res_interfaces_nt(HKEY hKey, const char *subkey, char **obuf) +{ + char enumbuf[39]; /* GUIDs are 38 chars + 1 for NULL */ + DWORD enum_size = 39; + int idx = 0; + HKEY hVal; + + while (RegEnumKeyEx(hKey, idx++, enumbuf, &enum_size, 0, + NULL, NULL, NULL) != ERROR_NO_MORE_ITEMS) + { + int rc; + + enum_size = 39; + if (RegOpenKeyEx(hKey, enumbuf, 0, KEY_QUERY_VALUE, &hVal) != + ERROR_SUCCESS) + continue; + rc = get_res_nt(hVal, subkey, obuf); + RegCloseKey(hVal); + if (rc) + return 1; + } + return 0; +} + +/** + * The desired output for this method is that we set "ret_buf" to + * something like: + * + * 192.168.0.1,dns01.my.domain,fe80::200:f8ff:fe21:67cf + * + * The only ordering requirement is that primary servers are listed + * before secondary. There is no requirement that IPv4 addresses should + * necessarily be before IPv6. + * + * Note that ret_size should ideally be big enough to hold around + * 2-3 IPv4 and 2-3 IPv6 addresses. + * + * Finally, we need to return the total number of DNS servers located. + */ +static int get_iphlpapi_dns_info (char *ret_buf, size_t ret_size) +{ + const size_t ipv4_size = INET_ADDRSTRLEN + 1; /* +1 for ',' at end */ + const size_t ipv6_size = INET6_ADDRSTRLEN + 12; /* +12 for "%0123456789," at end */ + size_t left = ret_size; + char *ret = ret_buf; + int count = 0; + + /* Use the GetAdaptersAddresses method if it's available, otherwise + fall back to GetNetworkParams. */ + if (ares_fpGetAdaptersAddresses != ZERO_NULL) + { + const ULONG working_buf_size = 15000; + IP_ADAPTER_ADDRESSES *pFirstEntry = NULL; + IP_ADAPTER_ADDRESSES *pEntry = NULL; + ULONG bufSize = 0; + ULONG result = 0; + + /* According to MSDN, the recommended way to do this is to use a temporary + buffer of 15K, to "dramatically reduce the chance that the GetAdaptersAddresses + method returns ERROR_BUFFER_OVERFLOW" */ + pFirstEntry = ( IP_ADAPTER_ADDRESSES * ) malloc( working_buf_size ); + bufSize = working_buf_size; + if( !pFirstEntry ) + return 0; + + /* Call the method one time */ + result = ( *ares_fpGetAdaptersAddresses )( AF_UNSPEC, 0, 0, pFirstEntry, &bufSize ); + if( result == ERROR_BUFFER_OVERFLOW ) + { + /* Reallocate, bufSize should now be set to the required size */ + pFirstEntry = ( IP_ADAPTER_ADDRESSES * ) realloc( pFirstEntry, bufSize ); + if( !pFirstEntry ) + return 0; + + /* Call the method a second time */ + result = ( *ares_fpGetAdaptersAddresses )( AF_UNSPEC, 0, 0, pFirstEntry, &bufSize ); + if( result == ERROR_BUFFER_OVERFLOW ) + { + /* Reallocate, bufSize should now be set to the required size */ + pFirstEntry = ( IP_ADAPTER_ADDRESSES * ) realloc( pFirstEntry, bufSize ); + if( !pFirstEntry ) + return 0; + + /* Call the method a third time. The maximum number of times we're going to do + this is 3. Three shall be the number thou shalt count, and the number of the + counting shall be three. Five is right out. */ + result = ( *ares_fpGetAdaptersAddresses )( AF_UNSPEC, 0, 0, pFirstEntry, &bufSize ); + } + } + + /* Check the current result for failure */ + if( result != ERROR_SUCCESS ) + { + free( pFirstEntry ); + return 0; + } + + /* process the results */ + for( pEntry = pFirstEntry ; pEntry != NULL ; pEntry = pEntry->Next ) + { + IP_ADAPTER_DNS_SERVER_ADDRESS* pDNSAddr = pEntry->FirstDnsServerAddress; + for( ; pDNSAddr != NULL ; pDNSAddr = pDNSAddr->Next ) + { + struct sockaddr *pGenericAddr = pDNSAddr->Address.lpSockaddr; + size_t stringlen = 0; + + if( pGenericAddr->sa_family == AF_INET && left > ipv4_size ) + { + /* Handle the v4 case */ + struct sockaddr_in *pIPv4Addr = ( struct sockaddr_in * ) pGenericAddr; + ares_inet_ntop( AF_INET, &pIPv4Addr->sin_addr, ret, ipv4_size - 1 ); /* -1 for comma */ + + /* Append a comma to the end, THEN NULL. Should be OK because we + already tested the size at the top of the if statement. */ + stringlen = strlen( ret ); + ret[ stringlen ] = ','; + ret[ stringlen + 1 ] = '\0'; + ret += stringlen + 1; + left -= ret - ret_buf; + ++count; + } + else if( pGenericAddr->sa_family == AF_INET6 && left > ipv6_size ) + { + /* Handle the v6 case */ + struct sockaddr_in6 *pIPv6Addr = ( struct sockaddr_in6 * ) pGenericAddr; + ares_inet_ntop( AF_INET6, &pIPv6Addr->sin6_addr, ret, ipv6_size - 1 ); /* -1 for comma */ + + /* Append a comma to the end, THEN NULL. Should be OK because we + already tested the size at the top of the if statement. */ + stringlen = strlen( ret ); + ret[ stringlen ] = ','; + ret[ stringlen + 1 ] = '\0'; + ret += stringlen + 1; + left -= ret - ret_buf; + ++count; + + /* NB on Windows this also returns stuff in the fec0::/10 range, + seems to be hard-coded somehow. Do we need to ignore them? */ + } + } + } + + if( pFirstEntry ) + free( pFirstEntry ); + if (ret > ret_buf) + ret[-1] = '\0'; + return count; + } + else + { + FIXED_INFO *fi, *newfi; + DWORD size = sizeof (*fi); + IP_ADDR_STRING *ipAddr; + int i; + int debug = 0; + HRESULT res; + + fi = malloc(size); + if (!fi) + return 0; + + res = (*ares_fpGetNetworkParams) (fi, &size); + if ((res != ERROR_BUFFER_OVERFLOW) && (res != ERROR_SUCCESS)) + goto quit; + + newfi = realloc(fi, size); + if (!newfi) + goto quit; + + fi = newfi; + res = (*ares_fpGetNetworkParams) (fi, &size); + if (res != ERROR_SUCCESS) + goto quit; + + if (debug) + { + printf ("Host Name: %s\n", fi->HostName); + printf ("Domain Name: %s\n", fi->DomainName); + printf ("DNS Servers:\n" + " %s (primary)\n", fi->DnsServerList.IpAddress.String); + } + if (strlen(fi->DnsServerList.IpAddress.String) > 0 && + inet_addr(fi->DnsServerList.IpAddress.String) != INADDR_NONE && + left > ipv4_size) + { + ret += sprintf (ret, "%s,", fi->DnsServerList.IpAddress.String); + left -= ret - ret_buf; + ++count; + } + + for (i = 0, ipAddr = fi->DnsServerList.Next; ipAddr && left > ipv4_size; + ipAddr = ipAddr->Next, i++) + { + if (inet_addr(ipAddr->IpAddress.String) != INADDR_NONE) + { + ret += sprintf (ret, "%s,", ipAddr->IpAddress.String); + left -= ret - ret_buf; + ++count; + } + if (debug) + printf (" %s (secondary %d)\n", ipAddr->IpAddress.String, i+1); + } + +quit: + if (fi) + free(fi); + + if (debug && left <= ipv4_size) + printf ("Too many nameservers. Truncating to %d addressess", count); + if (ret > ret_buf) + ret[-1] = '\0'; + return count; + } +} +#endif + +static int init_by_resolv_conf(ares_channel channel) +{ +#ifndef WATT32 + char *line = NULL; +#endif + int status = -1, nservers = 0, nsort = 0; + struct server_state *servers = NULL; + struct apattern *sortlist = NULL; + +#ifdef WIN32 + + /* + NameServer info via IPHLPAPI (IP helper API): + GetNetworkParams() should be the trusted source for this. + Available in Win-98/2000 and later. If that fail, fall-back to + registry information. + + NameServer Registry: + + On Windows 9X, the DNS server can be found in: +HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP\NameServer + + On Windows NT/2000/XP/2003: +HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\NameServer + or +HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DhcpNameServer + or +HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\{AdapterID}\ +NameServer + or +HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\{AdapterID}\ +DhcpNameServer + */ + + HKEY mykey; + HKEY subkey; + DWORD data_type; + DWORD bytes; + DWORD result; + char buf[512]; + win_platform platform; + + if (channel->nservers > -1) /* don't override ARES_OPT_SERVER */ + return ARES_SUCCESS; + + if (get_iphlpapi_dns_info(buf,sizeof(buf)) > 0) + { + status = config_nameserver(&servers, &nservers, buf); + if (status == ARES_SUCCESS) + goto okay; + } + + platform = ares__getplatform(); + + if (platform == WIN_NT) + { + if (RegOpenKeyEx( + HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, + KEY_READ, &mykey + ) == ERROR_SUCCESS) + { + RegOpenKeyEx(mykey, "Interfaces", 0, + KEY_QUERY_VALUE|KEY_ENUMERATE_SUB_KEYS, &subkey); + if (get_res_nt(mykey, NAMESERVER, &line)) + { + status = config_nameserver(&servers, &nservers, line); + free(line); + } + else if (get_res_nt(mykey, DHCPNAMESERVER, &line)) + { + status = config_nameserver(&servers, &nservers, line); + free(line); + } + /* Try the interfaces */ + else if (get_res_interfaces_nt(subkey, NAMESERVER, &line)) + { + status = config_nameserver(&servers, &nservers, line); + free(line); + } + else if (get_res_interfaces_nt(subkey, DHCPNAMESERVER, &line)) + { + status = config_nameserver(&servers, &nservers, line); + free(line); + } + RegCloseKey(subkey); + RegCloseKey(mykey); + } + } + else if (platform == WIN_9X) + { + if (RegOpenKeyEx( + HKEY_LOCAL_MACHINE, WIN_NS_9X, 0, + KEY_READ, &mykey + ) == ERROR_SUCCESS) + { + if ((result = RegQueryValueEx( + |