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+/* dnsmasq is Copyright (c) 2000-2011 Simon Kelley
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; version 2 dated June, 1991, or
+ (at your option) version 3 dated 29 June, 2007.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/* define this to get facilitynames */
+#define SYSLOG_NAMES
+#include "dnsmasq.h"
+#include <setjmp.h>
+
+static volatile int mem_recover = 0;
+static jmp_buf mem_jmp;
+static void one_file(char *file, int hard_opt);
+
+/* Solaris headers don't have facility names. */
+#ifdef HAVE_SOLARIS_NETWORK
+static const struct {
+ char *c_name;
+ unsigned int c_val;
+} facilitynames[] = {
+ { "kern", LOG_KERN },
+ { "user", LOG_USER },
+ { "mail", LOG_MAIL },
+ { "daemon", LOG_DAEMON },
+ { "auth", LOG_AUTH },
+ { "syslog", LOG_SYSLOG },
+ { "lpr", LOG_LPR },
+ { "news", LOG_NEWS },
+ { "uucp", LOG_UUCP },
+ { "audit", LOG_AUDIT },
+ { "cron", LOG_CRON },
+ { "local0", LOG_LOCAL0 },
+ { "local1", LOG_LOCAL1 },
+ { "local2", LOG_LOCAL2 },
+ { "local3", LOG_LOCAL3 },
+ { "local4", LOG_LOCAL4 },
+ { "local5", LOG_LOCAL5 },
+ { "local6", LOG_LOCAL6 },
+ { "local7", LOG_LOCAL7 },
+ { NULL, 0 }
+};
+#endif
+
+#ifndef HAVE_GETOPT_LONG
+struct myoption {
+ const char *name;
+ int has_arg;
+ int *flag;
+ int val;
+};
+#endif
+
+#define OPTSTRING "951yZDNLERKzowefnbvhdkqr:m:p:c:l:s:i:t:u:g:a:x:S:C:A:T:H:Q:I:B:F:G:O:M:X:V:U:j:P:J:W:Y:2:4:6:7:8:0:3:"
+
+/* options which don't have a one-char version */
+#define LOPT_RELOAD 256
+#define LOPT_NO_NAMES 257
+#define LOPT_TFTP 258
+#define LOPT_SECURE 259
+#define LOPT_PREFIX 260
+#define LOPT_PTR 261
+#define LOPT_BRIDGE 262
+#define LOPT_TFTP_MAX 263
+#define LOPT_FORCE 264
+#define LOPT_NOBLOCK 265
+#define LOPT_LOG_OPTS 266
+#define LOPT_MAX_LOGS 267
+#define LOPT_CIRCUIT 268
+#define LOPT_REMOTE 269
+#define LOPT_SUBSCR 270
+#define LOPT_INTNAME 271
+#define LOPT_BANK 272
+#define LOPT_DHCP_HOST 273
+#define LOPT_APREF 274
+#define LOPT_OVERRIDE 275
+#define LOPT_TFTPPORTS 276
+#define LOPT_REBIND 277
+#define LOPT_NOLAST 278
+#define LOPT_OPTS 279
+#define LOPT_DHCP_OPTS 280
+#define LOPT_MATCH 281
+#define LOPT_BROADCAST 282
+#define LOPT_NEGTTL 283
+#define LOPT_ALTPORT 284
+#define LOPT_SCRIPTUSR 285
+#define LOPT_LOCAL 286
+#define LOPT_NAPTR 287
+#define LOPT_MINPORT 288
+#define LOPT_DHCP_FQDN 289
+#define LOPT_CNAME 290
+#define LOPT_PXE_PROMT 291
+#define LOPT_PXE_SERV 292
+#define LOPT_TEST 293
+#define LOPT_TAG_IF 294
+#define LOPT_PROXY 295
+#define LOPT_GEN_NAMES 296
+#define LOPT_MAXTTL 297
+#define LOPT_NO_REBIND 298
+#define LOPT_LOC_REBND 299
+#define LOPT_ADD_MAC 300
+#define LOPT_DNSSEC 301
+
+#ifdef HAVE_GETOPT_LONG
+static const struct option opts[] =
+#else
+static const struct myoption opts[] =
+#endif
+ {
+ { "version", 0, 0, 'v' },
+ { "no-hosts", 0, 0, 'h' },
+ { "no-poll", 0, 0, 'n' },
+ { "help", 0, 0, 'w' },
+ { "no-daemon", 0, 0, 'd' },
+ { "log-queries", 0, 0, 'q' },
+ { "user", 2, 0, 'u' },
+ { "group", 2, 0, 'g' },
+ { "resolv-file", 2, 0, 'r' },
+ { "mx-host", 1, 0, 'm' },
+ { "mx-target", 1, 0, 't' },
+ { "cache-size", 2, 0, 'c' },
+ { "port", 1, 0, 'p' },
+ { "dhcp-leasefile", 2, 0, 'l' },
+ { "dhcp-lease", 1, 0, 'l' },
+ { "dhcp-host", 1, 0, 'G' },
+ { "dhcp-range", 1, 0, 'F' },
+ { "dhcp-option", 1, 0, 'O' },
+ { "dhcp-boot", 1, 0, 'M' },
+ { "domain", 1, 0, 's' },
+ { "domain-suffix", 1, 0, 's' },
+ { "interface", 1, 0, 'i' },
+ { "listen-address", 1, 0, 'a' },
+ { "bogus-priv", 0, 0, 'b' },
+ { "bogus-nxdomain", 1, 0, 'B' },
+ { "selfmx", 0, 0, 'e' },
+ { "filterwin2k", 0, 0, 'f' },
+ { "pid-file", 2, 0, 'x' },
+ { "strict-order", 0, 0, 'o' },
+ { "server", 1, 0, 'S' },
+ { "local", 1, 0, LOPT_LOCAL },
+ { "address", 1, 0, 'A' },
+ { "conf-file", 2, 0, 'C' },
+ { "no-resolv", 0, 0, 'R' },
+ { "expand-hosts", 0, 0, 'E' },
+ { "localmx", 0, 0, 'L' },
+ { "local-ttl", 1, 0, 'T' },
+ { "no-negcache", 0, 0, 'N' },
+ { "addn-hosts", 1, 0, 'H' },
+ { "query-port", 1, 0, 'Q' },
+ { "except-interface", 1, 0, 'I' },
+ { "no-dhcp-interface", 1, 0, '2' },
+ { "domain-needed", 0, 0, 'D' },
+ { "dhcp-lease-max", 1, 0, 'X' },
+ { "bind-interfaces", 0, 0, 'z' },
+ { "read-ethers", 0, 0, 'Z' },
+ { "alias", 1, 0, 'V' },
+ { "dhcp-vendorclass", 1, 0, 'U' },
+ { "dhcp-userclass", 1, 0, 'j' },
+ { "dhcp-ignore", 1, 0, 'J' },
+ { "edns-packet-max", 1, 0, 'P' },
+ { "keep-in-foreground", 0, 0, 'k' },
+ { "dhcp-authoritative", 0, 0, 'K' },
+ { "srv-host", 1, 0, 'W' },
+ { "localise-queries", 0, 0, 'y' },
+ { "txt-record", 1, 0, 'Y' },
+ { "enable-dbus", 0, 0, '1' },
+ { "bootp-dynamic", 2, 0, '3' },
+ { "dhcp-mac", 1, 0, '4' },
+ { "no-ping", 0, 0, '5' },
+ { "dhcp-script", 1, 0, '6' },
+ { "conf-dir", 1, 0, '7' },
+ { "log-facility", 1, 0 ,'8' },
+ { "leasefile-ro", 0, 0, '9' },
+ { "dns-forward-max", 1, 0, '0' },
+ { "clear-on-reload", 0, 0, LOPT_RELOAD },
+ { "dhcp-ignore-names", 2, 0, LOPT_NO_NAMES },
+ { "enable-tftp", 2, 0, LOPT_TFTP },
+ { "tftp-secure", 0, 0, LOPT_SECURE },
+ { "tftp-unique-root", 0, 0, LOPT_APREF },
+ { "tftp-root", 1, 0, LOPT_PREFIX },
+ { "tftp-max", 1, 0, LOPT_TFTP_MAX },
+ { "ptr-record", 1, 0, LOPT_PTR },
+ { "naptr-record", 1, 0, LOPT_NAPTR },
+ { "bridge-interface", 1, 0 , LOPT_BRIDGE },
+ { "dhcp-option-force", 1, 0, LOPT_FORCE },
+ { "tftp-no-blocksize", 0, 0, LOPT_NOBLOCK },
+ { "log-dhcp", 0, 0, LOPT_LOG_OPTS },
+ { "log-async", 2, 0, LOPT_MAX_LOGS },
+ { "dhcp-circuitid", 1, 0, LOPT_CIRCUIT },
+ { "dhcp-remoteid", 1, 0, LOPT_REMOTE },
+ { "dhcp-subscrid", 1, 0, LOPT_SUBSCR },
+ { "interface-name", 1, 0, LOPT_INTNAME },
+ { "dhcp-hostsfile", 1, 0, LOPT_DHCP_HOST },
+ { "dhcp-optsfile", 1, 0, LOPT_DHCP_OPTS },
+ { "dhcp-no-override", 0, 0, LOPT_OVERRIDE },
+ { "tftp-port-range", 1, 0, LOPT_TFTPPORTS },
+ { "stop-dns-rebind", 0, 0, LOPT_REBIND },
+ { "rebind-domain-ok", 1, 0, LOPT_NO_REBIND },
+ { "all-servers", 0, 0, LOPT_NOLAST },
+ { "dhcp-match", 1, 0, LOPT_MATCH },
+ { "dhcp-broadcast", 2, 0, LOPT_BROADCAST },
+ { "neg-ttl", 1, 0, LOPT_NEGTTL },
+ { "max-ttl", 1, 0, LOPT_MAXTTL },
+ { "dhcp-alternate-port", 2, 0, LOPT_ALTPORT },
+ { "dhcp-scriptuser", 1, 0, LOPT_SCRIPTUSR },
+ { "min-port", 1, 0, LOPT_MINPORT },
+ { "dhcp-fqdn", 0, 0, LOPT_DHCP_FQDN },
+ { "cname", 1, 0, LOPT_CNAME },
+ { "pxe-prompt", 1, 0, LOPT_PXE_PROMT },
+ { "pxe-service", 1, 0, LOPT_PXE_SERV },
+ { "test", 0, 0, LOPT_TEST },
+ { "tag-if", 1, 0, LOPT_TAG_IF },
+ { "dhcp-proxy", 2, 0, LOPT_PROXY },
+ { "dhcp-generate-names", 2, 0, LOPT_GEN_NAMES },
+ { "rebind-localhost-ok", 0, 0, LOPT_LOC_REBND },
+ { "add-mac", 0, 0, LOPT_ADD_MAC },
+ { "proxy-dnssec", 0, 0, LOPT_DNSSEC },
+ { NULL, 0, 0, 0 }
+ };
+
+
+#define ARG_DUP OPT_LAST
+#define ARG_ONE OPT_LAST + 1
+#define ARG_USED_CL OPT_LAST + 2
+#define ARG_USED_FILE OPT_LAST + 3
+
+static struct {
+ int opt;
+ unsigned int rept;
+ char * const flagdesc;
+ char * const desc;
+ char * const arg;
+} usage[] = {
+ { 'a', ARG_DUP, "ipaddr", gettext_noop("Specify local address(es) to listen on."), NULL },
+ { 'A', ARG_DUP, "/domain/ipaddr", gettext_noop("Return ipaddr for all hosts in specified domains."), NULL },
+ { 'b', OPT_BOGUSPRIV, NULL, gettext_noop("Fake reverse lookups for RFC1918 private address ranges."), NULL },
+ { 'B', ARG_DUP, "ipaddr", gettext_noop("Treat ipaddr as NXDOMAIN (defeats Verisign wildcard)."), NULL },
+ { 'c', ARG_ONE, "cachesize", gettext_noop("Specify the size of the cache in entries (defaults to %s)."), "$" },
+ { 'C', ARG_DUP, "path", gettext_noop("Specify configuration file (defaults to %s)."), CONFFILE },
+ { 'd', OPT_DEBUG, NULL, gettext_noop("Do NOT fork into the background: run in debug mode."), NULL },
+ { 'D', OPT_NODOTS_LOCAL, NULL, gettext_noop("Do NOT forward queries with no domain part."), NULL },
+ { 'e', OPT_SELFMX, NULL, gettext_noop("Return self-pointing MX records for local hosts."), NULL },
+ { 'E', OPT_EXPAND, NULL, gettext_noop("Expand simple names in /etc/hosts with domain-suffix."), NULL },
+ { 'f', OPT_FILTER, NULL, gettext_noop("Don't forward spurious DNS requests from Windows hosts."), NULL },
+ { 'F', ARG_DUP, "ipaddr,ipaddr,time", gettext_noop("Enable DHCP in the range given with lease duration."), NULL },
+ { 'g', ARG_ONE, "groupname", gettext_noop("Change to this group after startup (defaults to %s)."), CHGRP },
+ { 'G', ARG_DUP, "<hostspec>", gettext_noop("Set address or hostname for a specified machine."), NULL },
+ { LOPT_DHCP_HOST, ARG_DUP, "<filename>", gettext_noop("Read DHCP host specs from file."), NULL },
+ { LOPT_DHCP_OPTS, ARG_DUP, "<filename>", gettext_noop("Read DHCP option specs from file."), NULL },
+ { LOPT_TAG_IF, ARG_DUP, "tag-expression", gettext_noop("Evaluate conditional tag expression."), NULL },
+ { 'h', OPT_NO_HOSTS, NULL, gettext_noop("Do NOT load %s file."), HOSTSFILE },
+ { 'H', ARG_DUP, "path", gettext_noop("Specify a hosts file to be read in addition to %s."), HOSTSFILE },
+ { 'i', ARG_DUP, "interface", gettext_noop("Specify interface(s) to listen on."), NULL },
+ { 'I', ARG_DUP, "int", gettext_noop("Specify interface(s) NOT to listen on.") , NULL },
+ { 'j', ARG_DUP, "set:<tag>,<class>", gettext_noop("Map DHCP user class to tag."), NULL },
+ { LOPT_CIRCUIT, ARG_DUP, "set:<tag>,<circuit>", gettext_noop("Map RFC3046 circuit-id to tag."), NULL },
+ { LOPT_REMOTE, ARG_DUP, "set:<tag>,<remote>", gettext_noop("Map RFC3046 remote-id to tag."), NULL },
+ { LOPT_SUBSCR, ARG_DUP, "set:<tag>,<remote>", gettext_noop("Map RFC3993 subscriber-id to tag."), NULL },
+ { 'J', ARG_DUP, "tag:<tag>...", gettext_noop("Don't do DHCP for hosts with tag set."), NULL },
+ { LOPT_BROADCAST, ARG_DUP, "[=tag:<tag>...]", gettext_noop("Force broadcast replies for hosts with tag set."), NULL },
+ { 'k', OPT_NO_FORK, NULL, gettext_noop("Do NOT fork into the background, do NOT run in debug mode."), NULL },
+ { 'K', OPT_AUTHORITATIVE, NULL, gettext_noop("Assume we are the only DHCP server on the local network."), NULL },
+ { 'l', ARG_ONE, "path", gettext_noop("Specify where to store DHCP leases (defaults to %s)."), LEASEFILE },
+ { 'L', OPT_LOCALMX, NULL, gettext_noop("Return MX records for local hosts."), NULL },
+ { 'm', ARG_DUP, "host_name,target,pref", gettext_noop("Specify an MX record."), NULL },
+ { 'M', ARG_DUP, "<bootp opts>", gettext_noop("Specify BOOTP options to DHCP server."), NULL },
+ { 'n', OPT_NO_POLL, NULL, gettext_noop("Do NOT poll %s file, reload only on SIGHUP."), RESOLVFILE },
+ { 'N', OPT_NO_NEG, NULL, gettext_noop("Do NOT cache failed search results."), NULL },
+ { 'o', OPT_ORDER, NULL, gettext_noop("Use nameservers strictly in the order given in %s."), RESOLVFILE },
+ { 'O', ARG_DUP, "<optspec>", gettext_noop("Specify options to be sent to DHCP clients."), NULL },
+ { LOPT_FORCE, ARG_DUP, "<optspec>", gettext_noop("DHCP option sent even if the client does not request it."), NULL},
+ { 'p', ARG_ONE, "number", gettext_noop("Specify port to listen for DNS requests on (defaults to 53)."), NULL },
+ { 'P', ARG_ONE, "<size>", gettext_noop("Maximum supported UDP packet size for EDNS.0 (defaults to %s)."), "*" },
+ { 'q', OPT_LOG, NULL, gettext_noop("Log DNS queries."), NULL },
+ { 'Q', ARG_ONE, "number", gettext_noop("Force the originating port for upstream DNS queries."), NULL },
+ { 'R', OPT_NO_RESOLV, NULL, gettext_noop("Do NOT read resolv.conf."), NULL },
+ { 'r', ARG_DUP, "path", gettext_noop("Specify path to resolv.conf (defaults to %s)."), RESOLVFILE },
+ { 'S', ARG_DUP, "/domain/ipaddr", gettext_noop("Specify address(es) of upstream servers with optional domains."), NULL },
+ { LOPT_LOCAL, ARG_DUP, "/domain/", gettext_noop("Never forward queries to specified domains."), NULL },
+ { 's', ARG_DUP, "<domain>[,<range>]", gettext_noop("Specify the domain to be assigned in DHCP leases."), NULL },
+ { 't', ARG_ONE, "host_name", gettext_noop("Specify default target in an MX record."), NULL },
+ { 'T', ARG_ONE, "time", gettext_noop("Specify time-to-live in seconds for replies from /etc/hosts."), NULL },
+ { LOPT_NEGTTL, ARG_ONE, "time", gettext_noop("Specify time-to-live in seconds for negative caching."), NULL },
+ { LOPT_MAXTTL, ARG_ONE, "time", gettext_noop("Specify time-to-live in seconds for maximum TTL to send to clients."), NULL },
+ { 'u', ARG_ONE, "username", gettext_noop("Change to this user after startup. (defaults to %s)."), CHUSER },
+ { 'U', ARG_DUP, "set:<tag>,<class>", gettext_noop("Map DHCP vendor class to tag."), NULL },
+ { 'v', 0, NULL, gettext_noop("Display dnsmasq version and copyright information."), NULL },
+ { 'V', ARG_DUP, "addr,addr,mask", gettext_noop("Translate IPv4 addresses from upstream servers."), NULL },
+ { 'W', ARG_DUP, "name,target,...", gettext_noop("Specify a SRV record."), NULL },
+ { 'w', 0, NULL, gettext_noop("Display this message. Use --help dhcp for known DHCP options."), NULL },
+ { 'x', ARG_ONE, "path", gettext_noop("Specify path of PID file (defaults to %s)."), RUNFILE },
+ { 'X', ARG_ONE, "number", gettext_noop("Specify maximum number of DHCP leases (defaults to %s)."), "&" },
+ { 'y', OPT_LOCALISE, NULL, gettext_noop("Answer DNS queries based on the interface a query was sent to."), NULL },
+ { 'Y', ARG_DUP, "name,txt....", gettext_noop("Specify TXT DNS record."), NULL },
+ { LOPT_PTR, ARG_DUP, "name,target", gettext_noop("Specify PTR DNS record."), NULL },
+ { LOPT_INTNAME, ARG_DUP, "name,interface", gettext_noop("Give DNS name to IPv4 address of interface."), NULL },
+ { 'z', OPT_NOWILD, NULL, gettext_noop("Bind only to interfaces in use."), NULL },
+ { 'Z', OPT_ETHERS, NULL, gettext_noop("Read DHCP static host information from %s."), ETHERSFILE },
+ { '1', OPT_DBUS, NULL, gettext_noop("Enable the DBus interface for setting upstream servers, etc."), NULL },
+ { '2', ARG_DUP, "interface", gettext_noop("Do not provide DHCP on this interface, only provide DNS."), NULL },
+ { '3', ARG_DUP, "[=tag:<tag>]...", gettext_noop("Enable dynamic address allocation for bootp."), NULL },
+ { '4', ARG_DUP, "set:<tag>,<mac address>", gettext_noop("Map MAC address (with wildcards) to option set."), NULL },
+ { LOPT_BRIDGE, ARG_DUP, "iface,alias,..", gettext_noop("Treat DHCP requests on aliases as arriving from interface."), NULL },
+ { '5', OPT_NO_PING, NULL, gettext_noop("Disable ICMP echo address checking in the DHCP server."), NULL },
+ { '6', ARG_ONE, "path", gettext_noop("Script to run on DHCP lease creation and destruction."), NULL },
+ { '7', ARG_DUP, "path", gettext_noop("Read configuration from all the files in this directory."), NULL },
+ { '8', ARG_ONE, "<facilty>|<file>", gettext_noop("Log to this syslog facility or file. (defaults to DAEMON)"), NULL },
+ { '9', OPT_LEASE_RO, NULL, gettext_noop("Do not use leasefile."), NULL },
+ { '0', ARG_ONE, "<queries>", gettext_noop("Maximum number of concurrent DNS queries. (defaults to %s)"), "!" },
+ { LOPT_RELOAD, OPT_RELOAD, NULL, gettext_noop("Clear DNS cache when reloading %s."), RESOLVFILE },
+ { LOPT_NO_NAMES, ARG_DUP, "[=tag:<tag>]...", gettext_noop("Ignore hostnames provided by DHCP clients."), NULL },
+ { LOPT_OVERRIDE, OPT_NO_OVERRIDE, NULL, gettext_noop("Do NOT reuse filename and server fields for extra DHCP options."), NULL },
+ { LOPT_TFTP, ARG_DUP, "[=<interface>]", gettext_noop("Enable integrated read-only TFTP server."), NULL },
+ { LOPT_PREFIX, ARG_ONE, "<dir>[,<iface>]", gettext_noop("Export files by TFTP only from the specified subtree."), NULL },
+ { LOPT_APREF, OPT_TFTP_APREF, NULL, gettext_noop("Add client IP address to tftp-root."), NULL },
+ { LOPT_SECURE, OPT_TFTP_SECURE, NULL, gettext_noop("Allow access only to files owned by the user running dnsmasq."), NULL },
+ { LOPT_TFTP_MAX, ARG_ONE, "<connections>", gettext_noop("Maximum number of conncurrent TFTP transfers (defaults to %s)."), "#" },
+ { LOPT_NOBLOCK, OPT_TFTP_NOBLOCK, NULL, gettext_noop("Disable the TFTP blocksize extension."), NULL },
+ { LOPT_TFTPPORTS, ARG_ONE, "<start>,<end>", gettext_noop("Ephemeral port range for use by TFTP transfers."), NULL },
+ { LOPT_LOG_OPTS, OPT_LOG_OPTS, NULL, gettext_noop("Extra logging for DHCP."), NULL },
+ { LOPT_MAX_LOGS, ARG_ONE, "[=<log lines>]", gettext_noop("Enable async. logging; optionally set queue length."), NULL },
+ { LOPT_REBIND, OPT_NO_REBIND, NULL, gettext_noop("Stop DNS rebinding. Filter private IP ranges when resolving."), NULL },
+ { LOPT_LOC_REBND, OPT_LOCAL_REBIND, NULL, gettext_noop("Allow rebinding of 127.0.0.0/8, for RBL servers."), NULL },
+ { LOPT_NO_REBIND, ARG_DUP, "/domain/", gettext_noop("Inhibit DNS-rebind protection on this domain."), NULL },
+ { LOPT_NOLAST, OPT_ALL_SERVERS, NULL, gettext_noop("Always perform DNS queries to all servers."), NULL },
+ { LOPT_MATCH, ARG_DUP, "set:<tag>,<optspec>", gettext_noop("Set tag if client includes matching option in request."), NULL },
+ { LOPT_ALTPORT, ARG_ONE, "[=<ports>]", gettext_noop("Use alternative ports for DHCP."), NULL },
+ { LOPT_SCRIPTUSR, ARG_ONE, "<username>", gettext_noop("Run lease-change script as this user."), NULL },
+ { LOPT_NAPTR, ARG_DUP, "<name>,<naptr>", gettext_noop("Specify NAPTR DNS record."), NULL },
+ { LOPT_MINPORT, ARG_ONE, "<port>", gettext_noop("Specify lowest port available for DNS query transmission."), NULL },
+ { LOPT_DHCP_FQDN, OPT_DHCP_FQDN, NULL, gettext_noop("Use only fully qualified domain names for DHCP clients."), NULL },
+ { LOPT_GEN_NAMES, ARG_DUP, "[=tag:<tag>]...", gettext_noop("Generate hostnames based on MAC address for nameless clients."), NULL},
+ { LOPT_PROXY, ARG_DUP, "[=<ip_address>]...", gettext_noop("Use these DHCP relays as full proxies."), NULL },
+ { LOPT_CNAME, ARG_DUP, "<alias>,<target>", gettext_noop("Specify alias name for LOCAL DNS name."), NULL },
+ { LOPT_PXE_PROMT, ARG_DUP, "<prompt>,[<timeout>]", gettext_noop("Prompt to send to PXE clients."), NULL },
+ { LOPT_PXE_SERV, ARG_DUP, "<service>", gettext_noop("Boot service for PXE menu."), NULL },
+ { LOPT_TEST, 0, NULL, gettext_noop("Check configuration syntax."), NULL },
+ { LOPT_ADD_MAC, OPT_ADD_MAC, NULL, gettext_noop("Add requestor's MAC address to forwarded DNS queries"), NULL },
+ { LOPT_DNSSEC, OPT_DNSSEC, NULL, gettext_noop("Proxy DNSSEC validation results from upstream nameservers"), NULL },
+ { 0, 0, NULL, NULL, NULL }
+};
+
+#ifdef HAVE_DHCP
+#define OT_ADDR_LIST 0x80
+#define OT_RFC1035_NAME 0x40
+#define OT_INTERNAL 0x20
+#define OT_NAME 0x10
+
+
+static const struct {
+ char *name;
+ unsigned char val, size;
+} opttab[] = {
+ { "netmask", 1, OT_ADDR_LIST },
+ { "time-offset", 2, 4 },
+ { "router", 3, OT_ADDR_LIST },
+ { "dns-server", 6, OT_ADDR_LIST },
+ { "log-server", 7, OT_ADDR_LIST },
+ { "lpr-server", 9, OT_ADDR_LIST },
+ { "hostname", 12, OT_INTERNAL | OT_NAME },
+ { "boot-file-size", 13, 2 },
+ { "domain-name", 15, OT_NAME },
+ { "swap-server", 16, OT_ADDR_LIST },
+ { "root-path", 17, OT_NAME },
+ { "extension-path", 18, OT_NAME },
+ { "ip-forward-enable", 19, 1 },
+ { "non-local-source-routing", 20, 1 },
+ { "policy-filter", 21, OT_ADDR_LIST },
+ { "max-datagram-reassembly", 22, 2 },
+ { "default-ttl", 23, 1 },
+ { "mtu", 26, 2 },
+ { "all-subnets-local", 27, 1 },
+ { "broadcast", 28, OT_INTERNAL | OT_ADDR_LIST },
+ { "router-discovery", 31, 1 },
+ { "router-solicitation", 32, OT_ADDR_LIST },
+ { "static-route", 33, OT_ADDR_LIST },
+ { "trailer-encapsulation", 34, 1 },
+ { "arp-timeout", 35, 4 },
+ { "ethernet-encap", 36, 1 },
+ { "tcp-ttl", 37, 1 },
+ { "tcp-keepalive", 38, 4 },
+ { "nis-domain", 40, OT_NAME },
+ { "nis-server", 41, OT_ADDR_LIST },
+ { "ntp-server", 42, OT_ADDR_LIST },
+ { "vendor-encap", 43, OT_INTERNAL },
+ { "netbios-ns", 44, OT_ADDR_LIST },
+ { "netbios-dd", 45, OT_ADDR_LIST },
+ { "netbios-nodetype", 46, 1 },
+ { "netbios-scope", 47, 0 },
+ { "x-windows-fs", 48, OT_ADDR_LIST },
+ { "x-windows-dm", 49, OT_ADDR_LIST },
+ { "requested-address", 50, OT_INTERNAL | OT_ADDR_LIST },
+ { "lease-time", 51, OT_INTERNAL },
+ { "option-overload", 52, OT_INTERNAL },
+ { "message-type", 53, OT_INTERNAL, },
+ { "server-identifier", 54, OT_INTERNAL | OT_ADDR_LIST },
+ { "parameter-request", 55, OT_INTERNAL },
+ { "message", 56, OT_INTERNAL },
+ { "max-message-size", 57, OT_INTERNAL },
+ { "T1", 58, OT_INTERNAL },
+ { "T2", 59, OT_INTERNAL },
+ { "vendor-class", 60, 0 },
+ { "client-id", 61,OT_INTERNAL },
+ { "nis+-domain", 64, OT_NAME },
+ { "nis+-server", 65, OT_ADDR_LIST },
+ { "tftp-server", 66, OT_NAME },
+ { "bootfile-name", 67, OT_NAME },
+ { "mobile-ip-home", 68, OT_ADDR_LIST },
+ { "smtp-server", 69, OT_ADDR_LIST },
+ { "pop3-server", 70, OT_ADDR_LIST },
+ { "nntp-server", 71, OT_ADDR_LIST },
+ { "irc-server", 74, OT_ADDR_LIST },
+ { "user-class", 77, 0 },
+ { "FQDN", 81, OT_INTERNAL },
+ { "agent-id", 82, OT_INTERNAL },
+ { "client-arch", 93, 2 },
+ { "client-interface-id", 94, 0 },
+ { "client-machine-id", 97, 0 },
+ { "subnet-select", 118, OT_INTERNAL },
+ { "domain-search", 119, OT_RFC1035_NAME },
+ { "sip-server", 120, 0 },
+ { "classless-static-route", 121, 0 },
+ { "vendor-id-encap", 125, 0 },
+ { "server-ip-address", 255, OT_ADDR_LIST }, /* special, internal only, sets siaddr */
+ { NULL, 0, 0 }
+};
+
+char *option_string(unsigned char opt, int *is_ip, int *is_name)
+{
+ int i;
+
+ for (i = 0; opttab[i].name; i++)
+ if (opttab[i].val == opt)
+ {
+ if (is_ip)
+ *is_ip = !!(opttab[i].size & OT_ADDR_LIST);
+ if (is_name)
+ *is_name = !!(opttab[i].size & OT_NAME);
+ return opttab[i].name;
+ }
+
+ return NULL;
+}
+
+#endif
+
+/* We hide metacharaters in quoted strings by mapping them into the ASCII control
+ character space. Note that the \0, \t \b \r \033 and \n characters are carefully placed in the
+ following sequence so that they map to themselves: it is therefore possible to call
+ unhide_metas repeatedly on string without breaking things.
+ The transformation gets undone by opt_canonicalise, atoi_check and opt_string_alloc, and a
+ couple of other places.
+ Note that space is included here so that
+ --dhcp-option=3, string
+ has five characters, whilst
+ --dhcp-option=3," string"
+ has six.
+*/
+
+static const char meta[] = "\000123456 \b\t\n78\r90abcdefABCDE\033F:,.";
+
+static char hide_meta(char c)
+{
+ unsigned int i;
+
+ for (i = 0; i < (sizeof(meta) - 1); i++)
+ if (c == meta[i])
+ return (char)i;
+
+ return c;
+}
+
+static char unhide_meta(char cr)
+{
+ unsigned int c = cr;
+
+ if (c < (sizeof(meta) - 1))
+ cr = meta[c];
+
+ return cr;
+}
+
+static void unhide_metas(char *cp)
+{
+ if (cp)
+ for(; *cp; cp++)
+ *cp = unhide_meta(*cp);
+}
+
+static void *opt_malloc(size_t size)
+{
+ void *ret;
+
+ if (mem_recover)
+ {
+ ret = whine_malloc(size);
+ if (!ret)
+ longjmp(mem_jmp, 1);
+ }
+ else
+ ret = safe_malloc(size);
+
+ return ret;
+}
+
+static char *opt_string_alloc(char *cp)
+{
+ char *ret = NULL;
+
+ if (cp && strlen(cp) != 0)
+ {
+ ret = opt_malloc(strlen(cp)+1);
+ strcpy(ret, cp);
+
+ /* restore hidden metachars */
+ unhide_metas(ret);
+ }
+
+ return ret;
+}
+
+
+/* find next comma, split string with zero and eliminate spaces.
+ return start of string following comma */
+
+static char *split_chr(char *s, char c)
+{
+ char *comma, *p;
+
+ if (!s || !(comma = strchr(s, c)))
+ return NULL;
+
+ p = comma;
+ *comma = ' ';
+
+ for (; *comma == ' '; comma++);
+
+ for (; (p >= s) && *p == ' '; p--)
+ *p = 0;
+
+ return comma;
+}
+
+static char *split(char *s)
+{
+ return split_chr(s, ',');
+}
+
+static char *canonicalise_opt(char *s)
+{
+ char *ret;
+ int nomem;
+
+ if (!s)
+ return 0;
+
+ unhide_metas(s);
+ if (!(ret = canonicalise(s, &nomem)) && nomem)
+ {
+ if (mem_recover)
+ longjmp(mem_jmp, 1);
+ else
+ die(_("could not get memory"), NULL, EC_NOMEM);
+ }
+
+ return ret;
+}
+
+static int atoi_check(char *a, int *res)
+{
+ char *p;
+
+ if (!a)
+ return 0;
+
+ unhide_metas(a);
+
+ for (p = a; *p; p++)
+ if (*p < '0' || *p > '9')
+ return 0;
+
+ *res = atoi(a);
+ return 1;
+}
+
+static int atoi_check16(char *a, int *res)
+{
+ if (!(atoi_check(a, res)) ||
+ *res < 0 ||
+ *res > 0xffff)
+ return 0;
+
+ return 1;
+}
+
+static void add_txt(char *name, char *txt)
+{
+ size_t len = strlen(txt);
+ struct txt_record *r = opt_malloc(sizeof(struct txt_record));
+
+ r->name = opt_string_alloc(name);
+ r->next = daemon->txt;
+ daemon->txt = r;
+ r->class = C_CHAOS;
+ r->txt = opt_malloc(len+1);
+ r->len = len+1;
+ *(r->txt) = len;
+ memcpy((r->txt)+1, txt, len);
+}
+
+static void do_usage(void)
+{
+ char buff[100];
+ int i, j;
+
+ struct {
+ char handle;
+ int val;
+ } tab[] = {
+ { '$', CACHESIZ },
+ { '*', EDNS_PKTSZ },
+ { '&', MAXLEASES },
+ { '!', FTABSIZ },
+ { '#', TFTP_MAX_CONNECTIONS },
+ { '\0', 0 }
+ };
+
+ printf(_("Usage: dnsmasq [options]\n\n"));
+#ifndef HAVE_GETOPT_LONG
+ printf(_("Use short options only on the command line.\n"));
+#endif
+ printf(_("Valid options are:\n"));
+
+ for (i = 0; usage[i].opt != 0; i++)
+ {
+ char *desc = usage[i].flagdesc;
+ char *eq = "=";
+
+ if (!desc || *desc == '[')
+ eq = "";
+
+ if (!desc)
+ desc = "";
+
+ for ( j = 0; opts[j].name; j++)
+ if (opts[j].val == usage[i].opt)
+ break;
+ if (usage[i].opt < 256)
+ sprintf(buff, "-%c, ", usage[i].opt);
+ else
+ sprintf(buff, " ");
+
+ sprintf(buff+4, "--%s%s%s", opts[j].name, eq, desc);
+ printf("%-40.40s", buff);
+
+ if (usage[i].arg)
+ {
+ strcpy(buff, usage[i].arg);
+ for (j = 0; tab[j].handle; j++)
+ if (tab[j].handle == *(usage[i].arg))
+ sprintf(buff, "%d", tab[j].val);
+ }
+ printf(_(usage[i].desc), buff);
+ printf("\n");
+ }
+}
+
+#ifdef HAVE_DHCP
+static void display_opts(void)
+{
+ int i;
+
+ printf(_("Known DHCP options:\n"));
+
+ for (i = 0; opttab[i].name; i++)
+ if (!(opttab[i].size & OT_INTERNAL))
+ printf("%3d %s\n", opttab[i].val, opttab[i].name);
+}
+
+static int is_tag_prefix(char *arg)
+{
+ if (arg && (strstr(arg, "net:") == arg || strstr(arg, "tag:") == arg))
+ return 1;
+
+ return 0;
+}
+
+static char *set_prefix(char *arg)
+{
+ if (strstr(arg, "set:") == arg)
+ return arg+4;
+
+ return arg;
+}
+
+/* This is too insanely large to keep in-line in the switch */
+static char *parse_dhcp_opt(char *arg, int flags)
+{
+ struct dhcp_opt *new = opt_malloc(sizeof(struct dhcp_opt));
+ char lenchar = 0, *cp;
+ int i, addrs, digs, is_addr, is_hex, is_dec, is_string, dots;
+ char *comma = NULL, *problem = NULL;
+ struct dhcp_netid *np = NULL;
+ unsigned char opt_len = 0;
+
+ new->len = 0;
+ new->flags = flags;
+ new->netid = NULL;
+ new->val = NULL;
+ new->opt = 0;
+
+ while (arg)
+ {
+ comma = split(arg);
+
+ for (cp = arg; *cp; cp++)
+ if (*cp < '0' || *cp > '9')
+ break;
+
+ if (!*cp)
+ {
+ new->opt = atoi(arg);
+ opt_len = 0;
+ break;
+ }
+
+ if (strstr(arg, "option:") == arg)
+ {
+ for (i = 0; opttab[i].name; i++)
+ if (!(opttab[i].size & OT_INTERNAL) &&
+ strcasecmp(opttab[i].name, arg+7) == 0)
+ {
+ new->opt = opttab[i].val;
+ opt_len = opttab[i].size;
+ break;
+ }
+ /* option:<optname> must follow tag and vendor string. */
+ break;
+ }
+ else if (strstr(arg, "vendor:") == arg)
+ {
+ new->u.vendor_class = (unsigned char *)opt_string_alloc(arg+7);
+ new->flags |= DHOPT_VENDOR;
+ }
+ else if (strstr(arg, "encap:") == arg)
+ {
+ new->u.encap = atoi(arg+6);
+ new->flags |= DHOPT_ENCAPSULATE;
+ }
+ else if (strstr(arg, "vi-encap:") == arg)
+ {
+ new->u.encap = atoi(arg+9);
+ new->flags |= DHOPT_RFC3925;
+ if (flags == DHOPT_MATCH)
+ {
+ new->opt = 1; /* avoid error below */
+ break;
+ }
+ }
+ else
+ {
+ new->netid = opt_malloc(sizeof (struct dhcp_netid));
+ /* allow optional "net:" or "tag:" for consistency */
+ if (is_tag_prefix(arg))
+ new->netid->net = opt_string_alloc(arg+4);
+ else
+ new->netid->net = opt_string_alloc(set_prefix(arg));
+ new->netid->next = np;
+ np = new->netid;
+ }
+
+ arg = comma;
+ }
+
+ if (opt_len == 0 &&
+ !(new->flags & (DHOPT_VENDOR | DHOPT_ENCAPSULATE | DHOPT_RFC3925)))
+ for (i = 0; opttab[i].name; i++)
+ if (new->opt == opttab[i].val)
+ {
+ opt_len = opttab[i].size;
+ if (opt_len & OT_INTERNAL)
+ opt_len = 0;
+ break;
+ }
+
+ /* option may be missing with rfc3925 match */
+ if (new->opt == 0)
+ problem = _("bad dhcp-option");
+ else if (comma)
+ {
+ /* characterise the value */
+ char c;
+ int found_dig = 0;
+ is_addr = is_hex = is_dec = is_string = 1;
+ addrs = digs = 1;
+ dots = 0;
+ for (cp = comma; (c = *cp); cp++)
+ if (c == ',')
+ {
+ addrs++;
+ is_dec = is_hex = 0;
+ }
+ else if (c == ':')
+ {
+ digs++;
+ is_dec = is_addr = 0;
+ }
+ else if (c == '/')
+ {
+ is_dec = is_hex = 0;
+ if (cp == comma) /* leading / means a pathname */
+ is_addr = 0;
+ }
+ else if (c == '.')
+ {
+ is_dec = is_hex = 0;
+ dots++;
+ }
+ else if (c == '-')
+ is_hex = is_addr = 0;
+ else if (c == ' ')
+ is_dec = is_hex = 0;
+ else if (!(c >='0' && c <= '9'))
+ {
+ is_addr = 0;
+ if (cp[1] == 0 && is_dec &&
+ (c == 'b' || c == 's' || c == 'i'))
+ {
+ lenchar = c;
+ *cp = 0;
+ }
+ else
+ is_dec = 0;
+ if (!((c >='A' && c <= 'F') ||
+ (c >='a' && c <= 'f') ||
+ (c == '*' && (flags & DHOPT_MATCH))))
+ is_hex = 0;
+ }
+ else
+ found_dig = 1;
+
+ if (!found_dig)
+ is_dec = is_addr = 0;
+
+ /* We know that some options take addresses */
+ if (opt_len & OT_ADDR_LIST)
+ {
+ is_string = is_dec = is_hex = 0;
+ if (!is_addr || dots == 0)
+ problem = _("bad IP address");
+ }
+ /* or names */
+ else if (opt_len & (OT_NAME | OT_RFC1035_NAME))
+ is_addr = is_dec = is_hex = 0;
+
+ if (is_hex && digs > 1)
+ {
+ new->len = digs;
+ new->val = opt_malloc(new->len);
+ parse_hex(comma, new->val, digs, (flags & DHOPT_MATCH) ? &new->u.wildcard_mask : NULL, NULL);
+ new->flags |= DHOPT_HEX;
+ }
+ else if (is_dec)
+ {
+ int i, val = atoi(comma);
+ /* assume numeric arg is 1 byte except for
+ options where it is known otherwise.
+ For vendor class option, we have to hack. */
+ if (opt_len != 0)
+ new->len = opt_len;
+ else if (val & 0xffff0000)
+ new->len = 4;
+ else if (val & 0xff00)
+ new->len = 2;
+ else
+ new->len = 1;
+
+ if (lenchar == 'b')
+ new->len = 1;
+ else if (lenchar == 's')
+ new->len = 2;
+ else if (lenchar == 'i')
+ new->len = 4;
+
+ new->val = opt_malloc(new->len);
+ for (i=0; i<new->len; i++)
+ new->val[i] = val>>((new->len - i - 1)*8);
+ }
+ else if (is_addr)
+ {
+ struct in_addr in;
+ unsigned char *op;
+ char *slash;
+ /* max length of address/subnet descriptor is five bytes,
+ add one for the option 120 enc byte too */
+ new->val = op = opt_malloc((5 * addrs) + 1);
+ new->flags |= DHOPT_ADDR;
+
+ if (!(new->flags & (DHOPT_ENCAPSULATE | DHOPT_VENDOR | DHOPT_RFC3925)) &&
+ new->opt == OPTION_SIP_SERVER)
+ {
+ *(op++) = 1; /* RFC 3361 "enc byte" */
+ new->flags &= ~DHOPT_ADDR;
+ }
+ while (addrs--)
+ {
+ cp = comma;
+ comma = split(cp);
+ slash = split_chr(cp, '/');
+ in.s_addr = inet_addr(cp);
+ if (!slash)
+ {
+ memcpy(op, &in, INADDRSZ);
+ op += INADDRSZ;
+ }
+ else
+ {
+ unsigned char *p = (unsigned char *)&in;
+ int netsize = atoi(slash);
+ *op++ = netsize;
+ if (netsize > 0)
+ *op++ = *p++;
+ if (netsize > 8)
+ *op++ = *p++;
+ if (netsize > 16)
+ *op++ = *p++;
+ if (netsize > 24)
+ *op++ = *p++;
+ new->flags &= ~DHOPT_ADDR; /* cannot re-write descriptor format */
+ }
+ }
+ new->len = op - new->val;
+ }
+ else if (is_string)
+ {
+ /* text arg */
+ if ((new->opt == OPTION_DOMAIN_SEARCH || new->opt == OPTION_SIP_SERVER) &&
+ !(new->flags & (DHOPT_ENCAPSULATE | DHOPT_VENDOR | DHOPT_RFC3925)))
+ {
+ /* dns search, RFC 3397, or SIP, RFC 3361 */
+ unsigned char *q, *r, *tail;
+ unsigned char *p, *m = NULL, *newp;
+ size_t newlen, len = 0;
+ int header_size = (new->opt == OPTION_DOMAIN_SEARCH) ? 0 : 1;
+
+ arg = comma;
+ comma = split(arg);
+
+ while (arg && *arg)
+ {
+ char *in, *dom = NULL;
+ size_t domlen = 1;
+ /* Allow "." as an empty domain */
+ if (strcmp (arg, ".") != 0)
+ {
+ if (!(dom = canonicalise_opt(arg)))
+ {
+ problem = _("bad domain in dhcp-option");
+ break;
+ }
+ domlen = strlen(dom) + 2;
+ }
+
+ newp = opt_malloc(len + domlen + header_size);
+ if (m)
+ {
+ memcpy(newp, m, header_size + len);
+ free(m);
+ }
+ m = newp;
+ p = m + header_size;
+ q = p + len;
+
+ /* add string on the end in RFC1035 format */
+ for (in = dom; in && *in;)
+ {
+ unsigned char *cp = q++;
+ int j;
+ for (j = 0; *in && (*in != '.'); in++, j++)
+ *q++ = *in;
+ *cp = j;
+ if (*in)
+ in++;
+ }
+ *q++ = 0;
+ free(dom);
+
+ /* Now tail-compress using earlier names. */
+ newlen = q - p;
+ for (tail = p + len; *tail; tail += (*tail) + 1)
+ for (r = p; r - p < (int)len; r += (*r) + 1)
+ if (strcmp((char *)r, (char *)tail) == 0)
+ {
+ PUTSHORT((r - p) | 0xc000, tail);
+ newlen = tail - p;
+ goto end;
+ }
+ end:
+ len = newlen;
+
+ arg = comma;
+ comma = split(arg);
+ }
+
+ /* RFC 3361, enc byte is zero for names */
+ if (new->opt == OPTION_SIP_SERVER)
+ m[0] = 0;
+ new->len = (int) len + header_size;
+ new->val = m;
+ }
+ else
+ {
+ new->len = strlen(comma);
+ /* keep terminating zero on string */
+ new->val = (unsigned char *)opt_string_alloc(comma);
+ new->flags |= DHOPT_STRING;
+ }
+ }
+ }
+
+ if ((new->len > 255) ||
+ (new->len > 253 && (new->flags & (DHOPT_VENDOR | DHOPT_ENCAPSULATE))) ||
+ (new->len > 250 && (new->flags & DHOPT_RFC3925)))
+ problem = _("dhcp-option too long");
+
+ if (!problem)
+ {
+ if (flags == DHOPT_MATCH)
+ {
+ if ((new->flags & (DHOPT_ENCAPSULATE | DHOPT_VENDOR)) ||
+ !new->netid ||
+ new->netid->next)
+ problem = _("illegal dhcp-match");
+ else
+ {
+ new->next = daemon->dhcp_match;
+ daemon->dhcp_match = new;
+ }
+ }
+ else
+ {
+ new->next = daemon->dhcp_opts;
+ daemon->dhcp_opts = new;
+ }
+ }
+
+ return problem;
+}
+
+#endif
+
+void set_option_bool(unsigned int opt)
+{
+ if (opt < 32)
+ daemon->options |= 1u << opt;
+ else
+ daemon->options2 |= 1u << (opt - 32);
+}
+
+static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
+{
+ int i;
+ char *comma, *problem = NULL;;
+
+ if (option == '?')
+ return gen_prob;
+
+ for (i=0; usage[i].opt != 0; i++)
+ if (usage[i].opt == option)
+ {
+ int rept = usage[i].rept;
+
+ if (command_line)
+ {
+ /* command line */
+ if (rept == ARG_USED_CL)
+ return _("illegal repeated flag");
+ if (rept == ARG_ONE)
+ usage[i].rept = ARG_USED_CL;
+ }
+ else
+ {
+ /* allow file to override command line */
+ if (rept == ARG_USED_FILE)
+ return _("illegal repeated keyword");
+ if (rept == ARG_USED_CL || rept == ARG_ONE)
+ usage[i].rept = ARG_USED_FILE;
+ }
+
+ if (rept != ARG_DUP && rept != ARG_ONE && rept != ARG_USED_CL)
+ {
+ set_option_bool(rept);
+ return NULL;
+ }
+
+ break;
+ }
+
+ switch (option)
+ {
+ case 'C': /* --conf-file */
+ {
+ char *file = opt_string_alloc(arg);
+ if (file)
+ {
+ one_file(file, 0);
+ free(file);
+ }
+ break;
+ }
+
+ case '7': /* --conf-dir */
+ {
+ DIR *dir_stream;
+ struct dirent *ent;
+ char *directory, *path;
+ struct list {
+ char *suffix;
+ struct list *next;
+ } *ignore_suffix = NULL, *li;
+
+ comma = split(arg);
+ if (!(directory = opt_string_alloc(arg)))
+ break;
+
+ for (arg = comma; arg; arg = comma)
+ {
+ comma = split(arg);
+ li = opt_malloc(sizeof(struct list));
+ li->next = ignore_suffix;
+ ignore_suffix = li;
+ /* Have to copy: buffer is overwritten */
+ li->suffix = opt_string_alloc(arg);
+ };
+
+ if (!(dir_stream = opendir(directory)))
+ die(_("cannot access directory %s: %s"), directory, EC_FILE);
+
+ while ((ent = readdir(dir_stream)))
+ {
+ size_t len = strlen(ent->d_name);
+ struct stat buf;
+
+ /* ignore emacs backups and dotfiles */
+ if (len == 0 ||
+ ent->d_name[len - 1] == '~' ||
+ (ent->d_name[0] == '#' && ent->d_name[len - 1] == '#') ||
+ ent->d_name[0] == '.')
+ continue;
+
+ for (li = ignore_suffix; li; li = li->next)
+ {
+ /* check for proscribed suffices */
+ size_t ls = strlen(li->suffix);
+ if (len > ls &&
+ strcmp(li->suffix, &ent->d_name[len - ls]) == 0)
+ break;
+ }
+ if (li)
+ continue;
+
+ path = opt_malloc(strlen(directory) + len + 2);
+ strcpy(path, directory);
+ strcat(path, "/");
+ strcat(path, ent->d_name);
+
+ if (stat(path, &buf) == -1)
+ die(_("cannot access %s: %s"), path, EC_FILE);
+ /* only reg files allowed. */
+ if (!S_ISREG(buf.st_mode))
+ continue;
+
+ /* files must be readable */
+ one_file(path, 0);
+ free(path);
+ }
+
+ closedir(dir_stream);
+ free(directory);
+ for(; ignore_suffix; ignore_suffix = li)
+ {
+ li = ignore_suffix->next;
+ free(ignore_suffix->suffix);
+ free(ignore_suffix);
+ }
+
+ break;
+ }
+
+ case '8': /* --log-facility */
+ /* may be a filename */
+ if (strchr(arg, '/') || strcmp (arg, "-") == 0)
+ daemon->log_file = opt_string_alloc(arg);
+ else
+ {
+#ifdef __ANDROID__
+ problem = _("setting log facility is not possible under Android");
+#else
+ for (i = 0; facilitynames[i].c_name; i++)
+ if (hostname_isequal((char *)facilitynames[i].c_name, arg))
+ break;
+
+ if (facilitynames[i].c_name)
+ daemon->log_fac = facilitynames[i].c_val;
+ else
+ problem = _("bad log facility");
+#endif
+ }
+ break;
+
+ case 'x': /* --pid-file */
+ daemon->runfile = opt_string_alloc(arg);
+ break;
+
+ case 'r': /* --resolv-file */
+ {
+ char *name = opt_string_alloc(arg);
+ struct resolvc *new, *list = daemon->resolv_files;
+
+ if (list && list->is_default)
+ {
+ /* replace default resolv file - possibly with nothing */
+ if (name)
+ {
+ list->is_default = 0;
+ list->name = name;
+ }
+ else
+ list = NULL;
+ }
+ else if (name)
+ {
+ new = opt_malloc(sizeof(struct resolvc));
+ new->next = list;
+ new->name = name;
+ new->is_default = 0;
+ new->mtime = 0;
+ new->logged = 0;
+ list = new;
+ }
+ daemon->resolv_files = list;
+ break;
+ }
+
+ case 'm': /* --mx-host */
+ {
+ int pref = 1;
+ struct mx_srv_record *new;
+ char *name, *target = NULL;
+
+ if ((comma = split(arg)))
+ {
+ char *prefstr;
+ if ((prefstr = split(comma)) && !atoi_check16(prefstr, &pref))
+ problem = _("bad MX preference");
+ }
+
+ if (!(name = canonicalise_opt(arg)) ||
+ (comma && !(target = canonicalise_opt(comma))))
+ problem = _("bad MX name");
+
+ new = opt_malloc(sizeof(struct mx_srv_record));
+ new->next = daemon->mxnames;
+ daemon->mxnames = new;
+ new->issrv = 0;
+ new->name = name;
+ new->target = target; /* may be NULL */
+ new->weight = pref;
+ break;
+ }
+
+ case 't': /* --mx-target */
+ if (!(daemon->mxtarget = canonicalise_opt(arg)))
+ problem = _("bad MX target");
+ break;
+
+#ifdef HAVE_DHCP
+ case 'l': /* --dhcp-leasefile */
+ daemon->lease_file = opt_string_alloc(arg);
+ break;
+
+ case '6': /* --dhcp-script */
+# if defined(NO_FORK)
+ problem = _("cannot run scripts under uClinux");
+# elif !defined(HAVE_SCRIPT)
+ problem = _("recompile with HAVE_SCRIPT defined to enable lease-change scripts");
+# else
+ daemon->lease_change_command = opt_string_alloc(arg);
+# endif
+ break;
+#endif
+
+ case LOPT_DHCP_HOST: /* --dhcp-hostfile */
+ case LOPT_DHCP_OPTS: /* --dhcp-optsfile */
+ case 'H': /* --addn-hosts */
+ {
+ struct hostsfile *new = opt_malloc(sizeof(struct hostsfile));
+ static int hosts_index = 1;
+ new->fname = opt_string_alloc(arg);
+ new->index = hosts_index++;
+ new->flags = 0;
+ if (option == 'H')
+ {
+ new->next = daemon->addn_hosts;
+ daemon->addn_hosts = new;
+ }
+ else if (option == LOPT_DHCP_HOST)
+ {
+ new->next = daemon->dhcp_hosts_file;
+ daemon->dhcp_hosts_file = new;
+ }
+ else if (option == LOPT_DHCP_OPTS)
+ {
+ new->next = daemon->dhcp_opts_file;
+ daemon->dhcp_opts_file = new;
+ }
+ break;
+ }
+
+ case 's': /* --domain */
+ if (strcmp (arg, "#") == 0)
+ set_option_bool(OPT_RESOLV_DOMAIN);
+ else
+ {
+ char *d;
+ comma = split(arg);
+ if (!(d = canonicalise_opt(arg)))
+ option = '?';
+ else
+ {
+ if (comma)
+ {
+ struct cond_domain *new = safe_malloc(sizeof(struct cond_domain));
+ char *netpart;
+
+ unhide_metas(comma);
+ if ((netpart = split_chr(comma, '/')))
+ {
+ int msize, mask;
+ arg = split(netpart);
+ if ((new->start.s_addr = inet_addr(comma)) == (in_addr_t)-1 ||
+ !atoi_check(netpart, &msize))
+ option = '?';
+ else
+ {
+ mask = (1 << (32 - msize)) - 1;
+ new->start.s_addr = ntohl(htonl(new->start.s_addr) & ~mask);
+ new->end.s_addr = new->start.s_addr | htonl(mask);
+ if (arg)
+ {
+ /* generate the equivalent of
+ local=/<domain>/
+ local=/xxx.yyy.zzz.in-addr.arpa/ */
+
+ if (strcmp(arg, "local") != 0 ||
+ (msize != 8 && msize != 16 && msize != 24))
+ option = '?';
+ else
+ {
+ struct server *serv = opt_malloc(sizeof(struct server));
+ in_addr_t a = ntohl(new->start.s_addr) >> 8;
+ char *p;
+
+ memset(serv, 0, sizeof(struct server));
+ serv->domain = d;
+ serv->flags = SERV_HAS_DOMAIN | SERV_NO_ADDR;
+ serv->next = daemon->servers;
+ daemon->servers = serv;
+
+ serv = opt_malloc(sizeof(struct server));
+ memset(serv, 0, sizeof(struct server));
+ p = serv->domain = opt_malloc(25); /* strlen("xxx.yyy.zzz.in-addr.arpa")+1 */
+
+ if (msize == 24)
+ p += sprintf(p, "%d.", a & 0xff);
+ a = a >> 8;
+ if (msize != 8)
+ p += sprintf(p, "%d.", a & 0xff);
+ a = a >> 8;
+ p += sprintf(p, "%d.in-addr.arpa", a & 0xff);
+
+ serv->flags = SERV_HAS_DOMAIN | SERV_NO_ADDR;
+ serv->next = daemon->servers;
+ daemon->servers = serv;
+ }
+ }
+ }
+ }
+ else if ((arg = split(comma)))
+ {
+ if ((new->start.s_addr = inet_addr(comma)) == (in_addr_t)-1 ||
+ (new->end.s_addr = inet_addr(arg)) == (in_addr_t)-1)
+ option = '?';
+ }
+ else if ((new->start.s_addr = new->end.s_addr = inet_addr(comma)) == (in_addr_t)-1)
+ option = '?';
+
+ new->domain = d;
+ new->next = daemon->cond_domain;
+ daemon->cond_domain = new;
+ }
+ else
+ daemon->domain_suffix = d;
+ }
+ }
+ break;
+
+ case 'u': /* --user */
+ daemon->username = opt_string_alloc(arg);
+ break;
+
+ case 'g': /* --group */
+ daemon->groupname = opt_string_alloc(arg);
+ daemon->group_set = 1;
+ break;
+
+#ifdef HAVE_DHCP
+ case LOPT_SCRIPTUSR: /* --scriptuser */
+ daemon->scriptuser = opt_string_alloc(arg);
+ break;
+#endif
+
+ case 'i': /* --interface */
+ do {
+ struct iname *new = opt_malloc(sizeof(struct iname));
+ comma = split(arg);
+ new->next = daemon->if_names;
+ daemon->if_names = new;
+ /* new->name may be NULL if someone does
+ "interface=" to disable all interfaces except loop. */
+ new->name = opt_string_alloc(arg);
+ new->isloop = new->used = 0;
+ arg = comma;
+ } while (arg);
+ break;
+
+ case 'I': /* --except-interface */
+ case '2': /* --no-dhcp-interface */
+ do {
+ struct iname *new = opt_malloc(sizeof(struct iname));
+ comma = split(arg);
+ new->name = opt_string_alloc(arg);
+ if (option == 'I')
+ {
+ new->next = daemon->if_except;
+ daemon->if_except = new;
+ }
+ else
+ {
+ new->next = daemon->dhcp_except;
+ daemon->dhcp_except = new;
+ }
+ arg = comma;
+ } while (arg);
+ break;
+
+ case 'B': /* --bogus-nxdomain */
+ {
+ struct in_addr addr;
+ unhide_metas(arg);
+ if (arg && (addr.s_addr = inet_addr(arg)) != (in_addr_t)-1)
+ {
+ struct bogus_addr *baddr = opt_malloc(sizeof(struct bogus_addr));
+ baddr->next = daemon->bogus_addr;
+ daemon->bogus_addr = baddr;
+ baddr->addr = addr;
+ }
+ else
+ option = '?'; /* error */
+ break;
+ }
+
+ case 'a': /* --listen-address */
+ do {
+ struct iname *new = opt_malloc(sizeof(struct iname));
+ comma = split(arg);
+ unhide_metas(arg);
+ new->next = daemon->if_addrs;
+ if (arg && (new->addr.in.sin_addr.s_addr = inet_addr(arg)) != (in_addr_t)-1)
+ {
+ new->addr.sa.sa_family = AF_INET;
+#ifdef HAVE_SOCKADDR_SA_LEN
+ new->addr.in.sin_len = sizeof(new->addr.in);
+#endif
+ }
+#ifdef HAVE_IPV6
+ else if (arg && inet_pton(AF_INET6, arg, &new->addr.in6.sin6_addr) > 0)
+ {
+ new->addr.sa.sa_family = AF_INET6;
+ new->addr.in6.sin6_flowinfo = 0;
+ new->addr.in6.sin6_scope_id = 0;
+#ifdef HAVE_SOCKADDR_SA_LEN
+ new->addr.in6.sin6_len = sizeof(new->addr.in6);
+#endif
+ }
+#endif
+ else
+ {
+ option = '?'; /* error */
+ break;
+ }
+
+ daemon->if_addrs = new;
+ arg = comma;
+ } while (arg);
+ break;
+
+ case 'S': /* --server */
+ case LOPT_LOCAL: /* --local */
+ case 'A': /* --address */
+ case LOPT_NO_REBIND: /* --rebind-domain-ok */
+ {
+ struct server *serv, *newlist = NULL;
+
+ unhide_metas(arg);
+
+ if (arg && (*arg == '/' || option == LOPT_NO_REBIND))
+ {
+ int rebind = !(*arg == '/');
+ char *end = NULL;
+ if (!rebind)
+ arg++;
+ while (rebind || (end = split_chr(arg, '/')))
+ {
+ char *domain = NULL;
+ /* elide leading dots - they are implied in the search algorithm */
+ while (*arg == '.') arg++;
+ /* # matches everything and becomes a zero length domain string */
+ if (strcmp(arg, "#") == 0)
+ domain = "";
+ else if (strlen (arg) != 0 && !(domain = canonicalise_opt(arg)))
+ option = '?';
+ serv = opt_malloc(sizeof(struct server));
+ memset(serv, 0, sizeof(struct server));
+ serv->next = newlist;
+ newlist = serv;
+ serv->domain = domain;
+ serv->flags = domain ? SERV_HAS_DOMAIN : SERV_FOR_NODOTS;
+ arg = end;
+ if (rebind)
+ break;
+ }
+ if (!newlist)
+ {
+ option = '?';
+ break;
+ }
+
+ }
+ else
+ {
+ newlist = opt_malloc(sizeof(struct server));
+ memset(newlist, 0, sizeof(struct server));
+ }
+
+ if (option == 'A')
+ {
+ newlist->flags |= SERV_LITERAL_ADDRESS;
+ if (!(newlist->flags & SERV_TYPE))
+ option = '?';
+ }
+ else if (option == LOPT_NO_REBIND)
+ newlist->flags |= SERV_NO_REBIND;
+
+ if (!arg || !*arg)
+ {
+ if (!(newlist->flags & SERV_NO_REBIND))
+ newlist->flags |= SERV_NO_ADDR; /* no server */
+ if (newlist->flags & SERV_LITERAL_ADDRESS)
+ option = '?';
+ }
+
+ else if (strcmp(arg, "#") == 0)
+ {
+ newlist->flags |= SERV_USE_RESOLV; /* treat in ordinary way */
+ if (newlist->flags & SERV_LITERAL_ADDRESS)
+ option = '?';
+ }
+ else
+ {
+ int source_port = 0, serv_port = NAMESERVER_PORT;
+ char *portno, *source;
+
+ if ((source = split_chr(arg, '@')) && /* is there a source. */
+ (portno = split_chr(source, '#')) &&
+ !atoi_check16(portno, &source_port))
+ problem = _("bad port");
+
+ if ((portno = split_chr(arg, '#')) && /* is there a port no. */
+ !atoi_check16(portno, &serv_port))
+ problem = _("bad port");
+
+ if ((newlist->addr.in.sin_addr.s_addr = inet_addr(arg)) != (in_addr_t) -1)
+ {
+ newlist->addr.in.sin_port = htons(serv_port);
+ newlist->source_addr.in.sin_port = htons(source_port);
+ newlist->addr.sa.sa_family = newlist->source_addr.sa.sa_family = AF_INET;
+#ifdef HAVE_SOCKADDR_SA_LEN
+ newlist->source_addr.in.sin_len = newlist->addr.in.sin_len = sizeof(struct sockaddr_in);
+#endif
+ if (source)
+ {
+ newlist->flags |= SERV_HAS_SOURCE;
+ if ((newlist->source_addr.in.sin_addr.s_addr = inet_addr(source)) == (in_addr_t) -1)
+ {
+#if defined(SO_BINDTODEVICE)
+ newlist->source_addr.in.sin_addr.s_addr = INADDR_ANY;
+ strncpy(newlist->interface, source, IF_NAMESIZE - 1);
+#else
+ problem = _("interface binding not supported");
+#endif
+ }
+ }
+ else
+ newlist->source_addr.in.sin_addr.s_addr = INADDR_ANY;
+ }
+#ifdef HAVE_IPV6
+ else if (inet_pton(AF_INET6, arg, &newlist->addr.in6.sin6_addr) > 0)
+ {
+ newlist->addr.in6.sin6_port = htons(serv_port);
+ newlist->source_addr.in6.sin6_port = htons(source_port);
+ newlist->addr.sa.sa_family = newlist->source_addr.sa.sa_family = AF_INET6;
+#ifdef HAVE_SOCKADDR_SA_LEN
+ newlist->addr.in6.sin6_len = newlist->source_addr.in6.sin6_len = sizeof(newlist->addr.in6);
+#endif
+ if (source)
+ {
+ newlist->flags |= SERV_HAS_SOURCE;
+ if (inet_pton(AF_INET6, source, &newlist->source_addr.in6.sin6_addr) == 0)
+ {
+#if defined(SO_BINDTODEVICE)
+ newlist->source_addr.in6.sin6_addr = in6addr_any;
+ strncpy(newlist->interface, source, IF_NAMESIZE - 1);
+#else
+ problem = _("interface binding not supported");
+#endif
+ }
+ }
+ else
+ newlist->source_addr.in6.sin6_addr = in6addr_any;
+ }
+#endif
+ else
+ option = '?'; /* error */
+
+ }
+
+ serv = newlist;
+ while (serv->next)
+ {
+ serv->next->flags = serv->flags;
+ serv->next->addr = serv->addr;
+ serv->next->source_addr = serv->source_addr;
+ serv = serv->next;
+ }
+ serv->next = daemon->servers;
+ daemon->servers = newlist;
+ break;
+ }
+
+ case 'c': /* --cache-size */
+ {
+ int size;
+
+ if (!atoi_check(arg, &size))
+ option = '?';
+ else
+ {
+ /* zero is OK, and means no caching. */
+
+ if (size < 0)
+ size = 0;
+ else if (size > 10000)
+ size = 10000;
+
+ daemon->cachesize = size;
+ }
+ break;
+ }
+
+ case 'p': /* --port */
+ if (!atoi_check16(arg, &daemon->port))
+ option = '?';
+ break;
+
+ case LOPT_MINPORT: /* --min-port */
+ if (!atoi_check16(arg, &daemon->min_port))
+ option = '?';
+ break;
+
+ case '0': /* --dns-forward-max */
+ if (!atoi_check(arg, &daemon->ftabsize))
+ option = '?';
+ break;
+
+ case LOPT_MAX_LOGS: /* --log-async */
+ daemon->max_logs = LOG_MAX; /* default */
+ if (arg && !atoi_check(arg, &daemon->max_logs))
+ option = '?';
+ else if (daemon->max_logs > 100)
+ daemon->max_logs = 100;
+ break;
+
+ case 'P': /* --edns-packet-max */
+ {
+ int i;
+ if (!atoi_check(arg, &i))
+ option = '?';
+ daemon->edns_pktsz = (unsigned short)i;
+ break;
+ }
+
+ case 'Q': /* --query-port */
+ if (!atoi_check16(arg, &daemon->query_port))
+ option = '?';
+ /* if explicitly set to zero, use single OS ephemeral port
+ and disable random ports */
+ if (daemon->query_port == 0)
+ daemon->osport = 1;
+ break;
+
+ case 'T': /* --local-ttl */
+ case LOPT_NEGTTL: /* --neg-ttl */
+ case LOPT_MAXTTL: /* --max-ttl */
+ {
+ int ttl;
+ if (!atoi_check(arg, &ttl))
+ option = '?';
+ else if (option == LOPT_NEGTTL)
+ daemon->neg_ttl = (unsigned long)ttl;
+ else if (option == LOPT_MAXTTL)
+ daemon->max_ttl = (unsigned long)ttl;
+ else
+ daemon->local_ttl = (unsigned long)ttl;
+ break;
+ }
+
+#ifdef HAVE_DHCP
+ case 'X': /* --dhcp-lease-max */
+ if (!atoi_check(arg, &daemon->dhcp_max))
+ option = '?';
+ break;
+#endif
+
+#ifdef HAVE_TFTP
+ case LOPT_TFTP: /* --enable-tftp */
+ if (arg)
+ {
+ struct interface_list *new = opt_malloc(sizeof(struct interface_list));
+ new->interface = opt_string_alloc(arg);
+ new->next = daemon->tftp_interfaces;
+ daemon->tftp_interfaces = new;
+ }
+ else
+ daemon->tftp_unlimited = 1;
+ break;
+
+ case LOPT_TFTP_MAX: /* --tftp-max */
+ if (!atoi_check(arg, &daemon->tftp_max))
+ option = '?';
+ break;
+
+ case LOPT_PREFIX: /* --tftp-prefix */
+ comma = split(arg);
+ if (comma)
+ {
+ struct tftp_prefix *new = opt_malloc(sizeof(struct tftp_prefix));
+ new->interface = opt_string_alloc(comma);
+ new->prefix = opt_string_alloc(arg);
+ new->next = daemon->if_prefix;
+ daemon->if_prefix = new;
+ }
+ else
+ daemon->tftp_prefix = opt_string_alloc(arg);
+ break;
+
+ case LOPT_TFTPPORTS: /* --tftp-port-range */
+ if (!(comma = split(arg)) ||
+ !atoi_check16(arg, &daemon->start_tftp_port) ||
+ !atoi_check16(comma, &daemon->end_tftp_port))
+ problem = _("bad port range");
+
+ if (daemon->start_tftp_port > daemon->end_tftp_port)
+ {
+ int tmp = daemon->start_tftp_port;
+ daemon->start_tftp_port = daemon->end_tftp_port;
+ daemon->end_tftp_port = tmp;
+ }
+
+ break;
+#endif
+
+ case LOPT_BRIDGE: /* --bridge-interface */
+ {
+ struct dhcp_bridge *new = opt_malloc(sizeof(struct dhcp_bridge));
+ if (!(comma = split(arg)) || strlen(arg) > IF_NAMESIZE - 1 )
+ {
+ problem = _("bad bridge-interface");
+ break;
+ }
+
+ strcpy(new->iface, arg);
+ new->alias = NULL;
+ new->next = daemon->bridges;
+ daemon->bridges = new;
+
+ do {
+ arg = comma;
+ comma = split(arg);
+ if (strlen(arg) != 0 && strlen(arg) <= IF_NAMESIZE - 1)
+ {
+ struct dhcp_bridge *b = opt_malloc(sizeof(struct dhcp_bridge));
+ b->next = new->alias;
+ new->alias = b;
+ strcpy(b->iface, arg);
+ }
+ } while (comma);
+
+ break;
+ }
+
+#ifdef HAVE_DHCP
+ case 'F': /* --dhcp-range */
+ {
+ int k, leasepos = 2;
+ char *cp, *a[5] = { NULL, NULL, NULL, NULL, NULL };
+ struct dhcp_context *new = opt_malloc(sizeof(struct dhcp_context));
+
+ new->next = daemon->dhcp;
+ new->lease_time = DEFLEASE;
+ new->addr_epoch = 0;
+ new->netmask.s_addr = 0;
+ new->broadcast.s_addr = 0;
+ new->router.s_addr = 0;
+ new->netid.net = NULL;
+ new->filter = NULL;
+ new->flags = 0;
+ new->interface = NULL;
+
+ gen_prob = _("bad dhcp-range");
+
+ if (!arg)
+ {
+ option = '?';
+ break;
+ }
+
+ while(1)
+ {
+ for (cp = arg; *cp; cp++)
+ if (!(*cp == ' ' || *cp == '.' || (*cp >='0' && *cp <= '9')))
+ break;
+
+ if (*cp != ',' && (comma = split(arg)))
+ {
+ if (strstr(arg, "interface:") == arg)
+ new->interface = opt_string_alloc(arg+10);
+ else if (is_tag_prefix(arg))
+ {
+ struct dhcp_netid *tt = opt_malloc(sizeof (struct dhcp_netid));
+ tt->net = opt_string_alloc(arg+4);
+ tt->next = new->filter;
+ new->filter = tt;
+ }
+ else
+ {
+ if (new->netid.net)
+ problem = _("only one tag allowed");
+ else if (strstr(arg, "set:") == arg)
+ new->netid.net = opt_string_alloc(arg+4);
+ else
+ new->netid.net = opt_string_alloc(arg);
+ }
+ arg = comma;
+ }
+ else
+ {
+ a[0] = arg;
+ break;
+ }
+ }
+
+ for (k = 1; k < 5; k++)
+ if (!(a[k] = split(a[k-1])))
+ break;
+
+ if ((k < 2) || ((new->start.s_addr = inet_addr(a[0])) == (in_addr_t)-1))
+ option = '?';
+ else if (strcmp(a[1], "static") == 0)
+ {
+ new->end = new->start;
+ new->flags |= CONTEXT_STATIC;
+ }
+ else if (strcmp(a[1], "proxy") == 0)
+ {
+ new->end = new->start;
+ new->flags |= CONTEXT_PROXY;
+ }
+ else if ((new->end.s_addr = inet_addr(a[1])) == (in_addr_t)-1)
+ option = '?';
+
+ if (ntohl(new->start.s_addr) > ntohl(new->end.s_addr))
+ {
+ struct in_addr tmp = new->start;
+ new->start = new->end;
+ new->end = tmp;
+ }
+
+ if (option != '?' && k >= 3 && strchr(a[2], '.') &&
+ ((new->netmask.s_addr = inet_addr(a[2])) != (in_addr_t)-1))
+ {
+ new->flags |= CONTEXT_NETMASK;
+ leasepos = 3;
+ if (!is_same_net(new->start, new->end, new->netmask))
+ problem = _("inconsistent DHCP range");
+ }
+ daemon->dhcp = new;
+
+ if (k >= 4 && strchr(a[3], '.') &&
+ ((new->broadcast.s_addr = inet_addr(a[3])) != (in_addr_t)-1))
+ {
+ new->flags |= CONTEXT_BRDCAST;
+ leasepos = 4;
+ }
+
+ if (k >= leasepos+1)
+ {
+ if (strcmp(a[leasepos], "infinite") == 0)
+ new->lease_time = 0xffffffff;
+ else
+ {
+ int fac = 1;
+ if (strlen(a[leasepos]) > 0)
+ {
+ switch (a[leasepos][strlen(a[leasepos]) - 1])
+ {
+ case 'd':
+ case 'D':
+ fac *= 24;
+ /* fall though */
+ case 'h':
+ case 'H':
+ fac *= 60;
+ /* fall through */
+ case 'm':
+ case 'M':
+ fac *= 60;
+ /* fall through */
+ case 's':
+ case 'S':
+ a[leasepos][strlen(a[leasepos]) - 1] = 0;
+ }
+
+ new->lease_time = atoi(a[leasepos]) * fac;
+ /* Leases of a minute or less confuse
+ some clients, notably Apple's */
+ if (new->lease_time < 120)
+ new->lease_time = 120;
+ }
+ }
+ }
+ break;
+ }
+
+ case LOPT_BANK:
+ case 'G': /* --dhcp-host */
+ {
+ int j, k = 0;
+ char *a[6] = { NULL, NULL, NULL, NULL, NULL, NULL };
+ struct dhcp_config *new;
+ struct in_addr in;
+
+ new = opt_malloc(sizeof(struct dhcp_config));
+
+ new->next = daemon->dhcp_conf;
+ new->flags = (option == LOPT_BANK) ? CONFIG_BANK : 0;
+ new->hwaddr = NULL;
+ new->netid = NULL;
+
+ if ((a[0] = arg))
+ for (k = 1; k < 6; k++)
+ if (!(a[k] = split(a[k-1])))
+ break;
+
+ for (j = 0; j < k; j++)
+ if (strchr(a[j], ':')) /* ethernet address, netid or binary CLID */
+ {
+ char *arg = a[j];
+
+ if ((arg[0] == 'i' || arg[0] == 'I') &&
+ (arg[1] == 'd' || arg[1] == 'D') &&
+ arg[2] == ':')
+ {
+ if (arg[3] == '*')
+ new->flags |= CONFIG_NOCLID;
+ else
+ {
+ int len;
+ arg += 3; /* dump id: */
+ if (strchr(arg, ':'))
+ len = parse_hex(arg, (unsigned char *)arg, -1, NULL, NULL);
+ else
+ {
+ unhide_metas(arg);
+ len = (int) strlen(arg);
+ }
+
+ if (len == -1)
+ problem = _("bad hex constant");
+ else if ((new->clid = opt_malloc(len)))
+ {
+ new->flags |= CONFIG_CLID;
+ new->clid_len = len;
+ memcpy(new->clid, arg, len);
+ }
+ }
+ }
+ /* dhcp-host has strange backwards-compat needs. */
+ else if (strstr(arg, "net:") == arg || strstr(arg, "set:") == arg)
+ {
+ struct dhcp_netid *newtag = opt_malloc(sizeof(struct dhcp_netid));
+ struct dhcp_netid_list *newlist = opt_malloc(sizeof(struct dhcp_netid_list));
+ newtag->net = opt_malloc(strlen(arg + 4) + 1);
+ newlist->next = new->netid;
+ new->netid = newlist;
+ newlist->list = newtag;
+ strcpy(newtag->net, arg+4);
+ unhide_metas(newtag->net);
+ }
+ else
+ {
+ struct hwaddr_config *newhw = opt_malloc(sizeof(struct hwaddr_config));
+ if ((newhw->hwaddr_len = parse_hex(a[j], newhw->hwaddr, DHCP_CHADDR_MAX,
+ &newhw->wildcard_mask, &newhw->hwaddr_type)) == -1)
+ problem = _("bad hex constant");
+ else
+ {
+
+ newhw->next = new->hwaddr;
+ new->hwaddr = newhw;
+ }
+ }
+ }
+ else if (strchr(a[j], '.') && (in.s_addr = inet_addr(a[j])) != (in_addr_t)-1)
+ {
+ new->addr = in;
+ new->flags |= CONFIG_ADDR;
+ }
+ else
+ {
+ char *cp, *lastp = NULL, last = 0;
+ int fac = 1;
+
+ if (strlen(a[j]) > 1)
+ {
+ lastp = a[j] + strlen(a[j]) - 1;
+ last = *lastp;
+ switch (last)
+ {
+ case 'd':
+ case 'D':
+ fac *= 24;
+ /* fall through */
+ case 'h':
+ case 'H':
+ fac *= 60;
+ /* fall through */
+ case 'm':
+ case 'M':
+ fac *= 60;
+ /* fall through */
+ case 's':
+ case 'S':
+ *lastp = 0;
+ }
+ }
+
+ for (cp = a[j]; *cp; cp++)
+ if (!isdigit((unsigned char)*cp) && *cp != ' ')
+ break;
+
+ if (*cp)
+ {
+ if (lastp)
+ *lastp = last;
+ if (strcmp(a[j], "infinite") == 0)
+ {
+ new->lease_time = 0xffffffff;
+ new->flags |= CONFIG_TIME;
+ }
+ else if (strcmp(a[j], "ignore") == 0)
+ new->flags |= CONFIG_DISABLE;
+ else
+ {
+ if (!(new->hostname = canonicalise_opt(a[j])) ||
+ !legal_hostname(new->hostname))
+ problem = _("bad DHCP host name");
+ else
+ new->flags |= CONFIG_NAME;
+ new->domain = NULL;
+ }
+ }
+ else
+ {
+ new->lease_time = atoi(a[j]) * fac;
+ /* Leases of a minute or less confuse
+ some clients, notably Apple's */
+ if (new->lease_time < 120)
+ new->lease_time = 120;
+ new->flags |= CONFIG_TIME;
+ }
+ }
+
+ daemon->dhcp_conf = new;
+ break;
+ }
+
+ case LOPT_TAG_IF: /* --tag-if */
+ {
+ struct tag_if *new = opt_malloc(sizeof(struct tag_if));
+
+ new->tag = NULL;
+ new->set = NULL;
+ new->next = NULL;
+
+ /* preserve order */
+ if (!daemon->tag_if)
+ daemon->tag_if = new;
+ else
+ {
+ struct tag_if *tmp;
+ for (tmp = daemon->tag_if; tmp->next; tmp = tmp->next);
+ tmp->next = new;
+ }
+
+ while (arg)
+ {
+ size_t len;
+
+ comma = split(arg);
+ len = strlen(arg);
+
+ if (len < 5)
+ {
+ new->set = NULL;
+ break;
+ }
+ else
+ {
+ struct dhcp_netid *newtag = opt_malloc(sizeof(struct dhcp_netid));
+ newtag->net = opt_malloc(len - 3);
+ strcpy(newtag->net, arg+4);
+ unhide_metas(newtag->net);
+
+ if (strstr(arg, "set:") == arg)
+ {
+ struct dhcp_netid_list *newlist = opt_malloc(sizeof(struct dhcp_netid_list));
+ newlist->next = new->set;
+ new->set = newlist;
+ newlist->list = newtag;
+ }
+ else if (strstr(arg, "tag:") == arg)
+ {
+ newtag->next = new->tag;
+ new->tag = newtag;
+ }
+ else
+ {
+ new->set = NULL;
+ break;
+ }
+ }
+
+ arg = comma;
+ }
+
+ if (!new->set)
+ problem = _("bad tag-if");
+
+ break;
+ }
+
+
+ case 'O': /* --dhcp-option */
+ case LOPT_FORCE: /* --dhcp-option-force */
+ case LOPT_OPTS:
+ case LOPT_MATCH: /* --dhcp-match */
+ problem = parse_dhcp_opt(arg,
+ option == LOPT_FORCE ? DHOPT_FORCE :
+ (option == LOPT_MATCH ? DHOPT_MATCH :
+ (option == LOPT_OPTS ? DHOPT_BANK : 0)));
+ break;
+
+ case 'M': /* --dhcp-boot */
+ {
+ struct dhcp_netid *id = NULL;
+ while (is_tag_prefix(arg))
+ {
+ struct dhcp_netid *newid = opt_malloc(sizeof(struct dhcp_netid));
+ newid->next = id;
+ id = newid;
+ comma = split(arg);
+ newid->net = opt_string_alloc(arg+4);
+ arg = comma;
+ };
+
+ if (!arg)
+ option = '?';
+ else
+ {
+ char *dhcp_file, *dhcp_sname = NULL;
+ struct in_addr dhcp_next_server;
+ comma = split(arg);
+ dhcp_file = opt_string_alloc(arg);
+ dhcp_next_server.s_addr = 0;
+ if (comma)
+ {
+ arg = comma;
+ comma = split(arg);
+ dhcp_sname = opt_string_alloc(arg);
+ if (comma)
+ {
+ unhide_metas(comma);
+ if ((dhcp_next_server.s_addr = inet_addr(comma)) == (in_addr_t)-1)
+ option = '?';
+ }
+ }
+ if (option != '?')
+ {
+ struct dhcp_boot *new = opt_malloc(sizeof(struct dhcp_boot));
+ new->file = dhcp_file;
+ new->sname = dhcp_sname;
+ new->next_server = dhcp_next_server;
+ new->netid = id;
+ new->next = daemon->boot_config;
+ daemon->boot_config = new;
+ }
+ }
+
+ break;
+ }
+
+ case LOPT_PXE_PROMT: /* --pxe-prompt */
+ {
+ struct dhcp_opt *new = opt_malloc(sizeof(struct dhcp_opt));
+ int timeout;
+
+ new->netid = NULL;
+ new->opt = 10; /* PXE_MENU_PROMPT */
+
+ while (is_tag_prefix(arg))
+ {
+ struct dhcp_netid *nn = opt_malloc(sizeof (struct dhcp_netid));
+ comma = split(arg);
+ nn->next = new->netid;
+ new->netid = nn;
+ nn->net = opt_string_alloc(arg+4);
+ arg = comma;
+ }
+
+ if (!arg)
+ option = '?';
+ else
+ {
+ comma = split(arg);
+ unhide_metas(arg);
+ new->len = strlen(arg) + 1;
+ new->val = opt_malloc(new->len);
+ memcpy(new->val + 1, arg, new->len - 1);
+
+ new->u.vendor_class = (unsigned char *)"PXEClient";
+ new->flags = DHOPT_VENDOR;
+
+ if (comma && atoi_check(comma, &timeout))
+ *(new->val) = timeout;
+ else
+ *(new->val) = 255;
+
+ new->next = daemon->dhcp_opts;
+ daemon->dhcp_opts = new;
+ daemon->enable_pxe = 1;
+ }
+
+ break;
+ }
+
+ case LOPT_PXE_SERV: /* --pxe-service */
+ {
+ struct pxe_service *new = opt_malloc(sizeof(struct pxe_service));
+ char *CSA[] = { "x86PC", "PC98", "IA64_EFI", "Alpha", "Arc_x86", "Intel_Lean_Client",
+ "IA32_EFI", "BC_EFI", "Xscale_EFI", "x86-64_EFI", NULL };
+ static int boottype = 32768;
+
+ new->netid = NULL;
+ new->server.s_addr = 0;
+
+ while (is_tag_prefix(arg))
+ {
+ struct dhcp_netid *nn = opt_malloc(sizeof (struct dhcp_netid));
+ comma = split(arg);
+ nn->next = new->netid;
+ new->netid = nn;
+ nn->net = opt_string_alloc(arg+4);
+ arg = comma;
+ }
+
+ if (arg && (comma = split(arg)))
+ {
+ for (i = 0; CSA[i]; i++)
+ if (strcasecmp(CSA[i], arg) == 0)
+ break;
+
+ if (CSA[i] || atoi_check(arg, &i))
+ {
+ arg = comma;
+ comma = split(arg);
+
+ new->CSA = i;
+ new->menu = opt_string_alloc(arg);
+
+ if (!comma)
+ {
+ new->type = 0; /* local boot */
+ new->basename = NULL;
+ }
+ else
+ {
+ arg = comma;
+ comma = split(arg);
+ if (atoi_check(arg, &i))
+ {
+ new->type = i;
+ new->basename = NULL;
+ }
+ else
+ {
+ new->type = boottype++;
+ new->basename = opt_string_alloc(arg);
+ }
+
+ if (comma && (new->server.s_addr = inet_addr(comma)) == (in_addr_t)-1)
+ option = '?';
+ }
+
+ /* Order matters */
+ new->next = NULL;
+ if (!daemon->pxe_services)
+ daemon->pxe_services = new;
+ else
+ {
+ struct pxe_service *s;
+ for (s = daemon->pxe_services; s->next; s = s->next);
+ s->next = new;
+ }
+
+ daemon->enable_pxe = 1;
+ break;
+
+ }
+ }
+
+ option = '?';
+ break;
+ }
+
+ case '4': /* --dhcp-mac */
+ {
+ if (!(comma = split(arg)))
+ option = '?';
+ else
+ {
+ struct dhcp_mac *new = opt_malloc(sizeof(struct dhcp_mac));
+ new->netid.net = opt_string_alloc(set_prefix(arg));
+ unhide_metas(comma);
+ new->hwaddr_len = parse_hex(comma, new->hwaddr, DHCP_CHADDR_MAX, &new->mask, &new->hwaddr_type);
+ if (new->hwaddr_len == -1)
+ option = '?';
+ else
+ {
+ new->next = daemon->dhcp_macs;
+ daemon->dhcp_macs = new;
+ }
+ }
+ }
+ break;
+
+ case 'U': /* --dhcp-vendorclass */
+ case 'j': /* --dhcp-userclass */
+ case LOPT_CIRCUIT: /* --dhcp-circuitid */
+ case LOPT_REMOTE: /* --dhcp-remoteid */
+ case LOPT_SUBSCR: /* --dhcp-subscrid */
+ {
+ if (!(comma = split(arg)))
+ option = '?';
+ else
+ {
+ unsigned char *p;
+ int dig = 0;
+ struct dhcp_vendor *new = opt_malloc(sizeof(struct dhcp_vendor));
+ new->netid.net = opt_string_alloc(set_prefix(arg));
+ /* check for hex string - must digits may include : must not have nothing else,
+ only allowed for agent-options. */
+ for (p = (unsigned char *)comma; *p; p++)
+ if (isxdigit(*p))
+ dig = 1;
+ else if (*p != ':')
+ break;
+ unhide_metas(comma);
+ if (option == 'U' || option == 'j' || *p || !dig)
+ {
+ new->len = strlen(comma);
+ new->data = opt_malloc(new->len);
+ memcpy(new->data, comma, new->len);
+ }
+ else
+ {
+ new->len = parse_hex(comma, (unsigned char *)comma, strlen(comma), NULL, NULL);
+ new->data = opt_malloc(new->len);
+ memcpy(new->data, comma, new->len);
+ }
+
+ switch (option)
+ {
+ case 'j':
+ new->match_type = MATCH_USER;
+ break;
+ case 'U':
+ new->match_type = MATCH_VENDOR;
+ break;
+ case LOPT_CIRCUIT:
+ new->match_type = MATCH_CIRCUIT;
+ break;
+ case LOPT_REMOTE:
+ new->match_type = MATCH_REMOTE;
+ break;
+ case LOPT_SUBSCR:
+ new->match_type = MATCH_SUBSCRIBER;
+ break;
+ }
+ new->next = daemon->dhcp_vendors;
+ daemon->dhcp_vendors = new;
+ }
+ break;
+ }
+
+ case LOPT_ALTPORT: /* --dhcp-alternate-port */
+ if (!arg)
+ {
+ daemon->dhcp_server_port = DHCP_SERVER_ALTPORT;
+ daemon->dhcp_client_port = DHCP_CLIENT_ALTPORT;
+ }
+ else
+ {
+ comma = split(arg);
+ if (!atoi_check16(arg, &daemon->dhcp_server_port) ||
+ (comma && !atoi_check16(comma, &daemon->dhcp_client_port)))
+ problem = _("invalid port number");
+ if (!comma)
+ daemon->dhcp_client_port = daemon->dhcp_server_port+1;
+ }
+ break;
+
+ case 'J': /* --dhcp-ignore */
+ case LOPT_NO_NAMES: /* --dhcp-ignore-names */
+ case LOPT_BROADCAST: /* --dhcp-broadcast */
+ case '3': /* --bootp-dynamic */
+ case LOPT_GEN_NAMES: /* --dhcp-generate-names */
+ {
+ struct dhcp_netid_list *new = opt_malloc(sizeof(struct dhcp_netid_list));
+ struct dhcp_netid *list = NULL;
+ if (option == 'J')
+ {
+ new->next = daemon->dhcp_ignore;
+ daemon->dhcp_ignore = new;
+ }
+ else if (option == LOPT_BROADCAST)
+ {
+ new->next = daemon->force_broadcast;
+ daemon->force_broadcast = new;
+ }
+ else if (option == '3')
+ {
+ new->next = daemon->bootp_dynamic;
+ daemon->bootp_dynamic = new;
+ }
+ else if (option == LOPT_GEN_NAMES)
+ {
+ new->next = daemon->dhcp_gen_names;
+ daemon->dhcp_gen_names = new;
+ }
+ else
+ {
+ new->next = daemon->dhcp_ignore_names;
+ daemon->dhcp_ignore_names = new;
+ }
+
+ while (arg) {
+ struct dhcp_netid *member = opt_malloc(sizeof(struct dhcp_netid));
+ comma = split(arg);
+ member->next = list;
+ list = member;
+ if (is_tag_prefix(arg))
+ member->net = opt_string_alloc(arg+4);
+ else
+ member->net = opt_string_alloc(arg);
+ arg = comma;
+ }
+
+ new->list = list;
+ break;
+ }
+
+ case LOPT_PROXY: /* --dhcp-proxy */
+ daemon->override = 1;
+ while (arg) {
+ struct addr_list *new = opt_malloc(sizeof(struct addr_list));
+ comma = split(arg);
+ if ((new->addr.s_addr = inet_addr(arg)) == (in_addr_t)-1)
+ problem = _("bad dhcp-proxy address");
+ new->next = daemon->override_relays;
+ daemon->override_relays = new;
+ arg = comma;
+ }
+ break;
+#endif
+
+ case 'V': /* --alias */
+ {
+ char *dash, *a[3] = { NULL, NULL, NULL };
+ int k = 0;
+ struct doctor *new = opt_malloc(sizeof(struct doctor));
+ new->next = daemon->doctors;
+ daemon->doctors = new;
+ new->mask.s_addr = 0xffffffff;
+ new->end.s_addr = 0;
+
+ if ((a[0] = arg))
+ for (k = 1; k < 3; k++)
+ {
+ if (!(a[k] = split(a[k-1])))
+ break;
+ unhide_metas(a[k]);
+ }
+
+ dash = split_chr(a[0], '-');
+
+ if ((k < 2) ||
+ ((new->in.s_addr = inet_addr(a[0])) == (in_addr_t)-1) ||
+ ((new->out.s_addr = inet_addr(a[1])) == (in_addr_t)-1))
+ option = '?';
+
+ if (k == 3)
+ new->mask.s_addr = inet_addr(a[2]);
+
+ if (dash &&
+ ((new->end.s_addr = inet_addr(dash)) == (in_addr_t)-1 ||
+ !is_same_net(new->in, new->end, new->mask) ||
+ ntohl(new->in.s_addr) > ntohl(new->end.s_addr)))
+ problem = _("invalid alias range");
+
+ break;
+ }
+
+ case LOPT_INTNAME: /* --interface-name */
+ {
+ struct interface_name *new, **up;
+ char *domain = NULL;
+
+ comma = split(arg);
+
+ if (!comma || !(domain = canonicalise_opt(arg)))
+ problem = _("bad interface name");
+
+ new = opt_malloc(sizeof(struct interface_name));
+ new->next = NULL;
+ /* Add to the end of the list, so that first name
+ of an interface is used for PTR lookups. */
+ for (up = &daemon->int_names; *up; up = &((*up)->next));
+ *up = new;
+ new->name = domain;
+ new->intr = opt_string_alloc(comma);
+ break;
+ }
+
+ case LOPT_CNAME: /* --cname */
+ {
+ struct cname *new;
+
+ if (!(comma = split(arg)))
+ option = '?';
+ else
+ {
+ char *alias = canonicalise_opt(arg);
+ char *target = canonicalise_opt(comma);
+
+ if (!alias || !target)
+ problem = _("bad CNAME");
+ else
+ {
+ for (new = daemon->cnames; new; new = new->next)
+ if (hostname_isequal(new->alias, arg))
+ problem = _("duplicate CNAME");
+ new = opt_malloc(sizeof(struct cname));
+ new->next = daemon->cnames;
+ daemon->cnames = new;
+ new->alias = alias;
+ new->target = target;
+ }
+ }
+ break;
+ }
+
+ case LOPT_PTR: /* --ptr-record */
+ {
+ struct ptr_record *new;
+ char *dom, *target = NULL;
+
+ comma = split(arg);
+
+ if (!(dom = canonicalise_opt(arg)) ||
+ (comma && !(target = canonicalise_opt(comma))))
+ problem = _("bad PTR record");
+ else
+ {
+ new = opt_malloc(sizeof(struct ptr_record));
+ new->next = daemon->ptr;
+ daemon->ptr = new;
+ new->name = dom;
+ new->ptr = target;
+ }
+ break;
+ }
+
+ case LOPT_NAPTR: /* --naptr-record */
+ {
+ char *a[7] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL };
+ int k = 0;
+ struct naptr *new;
+ int order, pref;
+ char *name, *replace = NULL;
+
+ if ((a[0] = arg))
+ for (k = 1; k < 7; k++)
+ if (!(a[k] = split(a[k-1])))
+ break;
+
+
+ if (k < 6 ||
+ !(name = canonicalise_opt(a[0])) ||
+ !atoi_check16(a[1], &order) ||
+ !atoi_check16(a[2], &pref) ||
+ (k == 7 && !(replace = canonicalise_opt(a[6]))))
+ problem = _("bad NAPTR record");
+ else
+ {
+ new = opt_malloc(sizeof(struct naptr));
+ new->next = daemon->naptr;
+ daemon->naptr = new;
+ new->name = name;
+ new->flags = opt_string_alloc(a[3]);
+ new->services = opt_string_alloc(a[4]);
+ new->regexp = opt_string_alloc(a[5]);
+ new->replace = replace;
+ new->order = order;
+ new->pref = pref;
+ }
+ break;
+ }
+
+ case 'Y': /* --txt-record */
+ {
+ struct txt_record *new;
+ unsigned char *p, *cnt;
+ size_t len;
+
+ comma = split(arg);
+
+ new = opt_malloc(sizeof(struct txt_record));
+ new->next = daemon->txt;
+ daemon->txt = new;
+ new->class = C_IN;
+
+ if (!(new->name = canonicalise_opt(arg)))
+ {
+ problem = _("bad TXT record");
+ break;
+ }
+
+ len = comma ? strlen(comma) : 0;
+ len += (len/255) + 1; /* room for extra counts */
+ new->txt = p = opt_malloc(len);
+
+ cnt = p++;
+ *cnt = 0;
+
+ while (comma && *comma)
+ {
+ unsigned char c = (unsigned char)*comma++;
+
+ if (c == ',' || *cnt == 255)
+ {
+ if (c != ',')
+ comma--;
+ cnt = p++;
+ *cnt = 0;
+ }
+ else
+ {
+ *p++ = unhide_meta(c);
+ (*cnt)++;
+ }
+ }
+
+ new->len = p - new->txt;
+
+ break;
+ }
+
+ case 'W': /* --srv-host */
+ {
+ int port = 1, priority = 0, weight = 0;
+ char *name, *target = NULL;
+ struct mx_srv_record *new;
+
+ comma = split(arg);
+
+ if (!(name = canonicalise_opt(arg)))
+ problem = _("bad SRV record");
+
+ if (comma)
+ {
+ arg = comma;
+ comma = split(arg);
+ if (!(target = canonicalise_opt(arg))
+) problem = _("bad SRV target");
+
+ if (comma)
+ {
+ arg = comma;
+ comma = split(arg);
+ if (!atoi_check16(arg, &port))
+ problem = _("invalid port number");
+
+ if (comma)
+ {
+ arg = comma;
+ comma = split(arg);
+ if (!atoi_check16(arg, &priority))
+ problem = _("invalid priority");
+
+ if (comma)
+ {
+ arg = comma;
+ comma = split(arg);
+ if (!atoi_check16(arg, &weight))
+ problem = _("invalid weight");
+ }
+ }
+ }
+ }
+
+ new = opt_malloc(sizeof(struct mx_srv_record));
+ new->next = daemon->mxnames;
+ daemon->mxnames = new;
+ new->issrv = 1;
+ new->name = name;
+ new->target = target;
+ new->srvport = port;
+ new->priority = priority;
+ new->weight = weight;
+ break;
+ }
+
+ default:
+ return _("unsupported option (check that dnsmasq was compiled with DHCP/TFTP/DBus support)");
+
+ }
+
+ if (problem)
+ return problem;
+
+ if (option == '?')
+ return gen_prob;
+
+ return NULL;
+}
+
+static void read_file(char *file, FILE *f, int hard_opt)
+{
+ volatile int lineno = 0;
+ char *buff = daemon->namebuff;
+
+ while (fgets(buff, MAXDNAME, f))
+ {
+ int white, i, option; ;
+ char *errmess, *p, *arg, *start;
+ size_t len;
+
+ /* Memory allocation failure longjmps here if mem_recover == 1 */
+ if (hard_opt)
+ {
+ if (setjmp(mem_jmp))
+ continue;
+ mem_recover = 1;
+ }
+
+ lineno++;
+ errmess = NULL;
+
+ /* Implement quotes, inside quotes we allow \\ \" \n and \t
+ metacharacters get hidden also strip comments */
+ for (white = 1, p = buff; *p; p++)
+ {
+ if (*p == '"')
+ {
+ memmove(p, p+1, strlen(p+1)+1);
+
+ for(; *p && *p != '"'; p++)
+ {
+ if (*p == '\\' && strchr("\"tnebr\\", p[1]))
+ {
+ if (p[1] == 't')
+ p[1] = '\t';
+ else if (p[1] == 'n')
+ p[1] = '\n';
+ else if (p[1] == 'b')
+ p[1] = '\b';
+ else if (p[1] == 'r')
+ p[1] = '\r';
+ else if (p[1] == 'e') /* escape */
+ p[1] = '\033';
+ memmove(p, p+1, strlen(p+1)+1);
+ }
+ *p = hide_meta(*p);
+ }
+
+ if (*p == 0)
+ {
+ errmess = _("missing \"");
+ goto oops;
+ }
+
+ memmove(p, p+1, strlen(p+1)+1);
+ }
+
+ if (isspace(*p))
+ {
+ *p = ' ';
+ white = 1;
+ }
+ else
+ {
+ if (white && *p == '#')
+ {
+ *p = 0;
+ break;
+ }
+ white = 0;
+ }
+ }
+
+
+ /* strip leading spaces */
+ for (start = buff; *start && *start == ' '; start++);
+
+ /* strip trailing spaces */
+ for (len = strlen(start); (len != 0) && (start[len-1] == ' '); len--);
+
+ if (len == 0)
+ continue;
+ else
+ start[len] = 0;
+
+ if (hard_opt != 0)
+ arg = start;
+ else if ((p=strchr(start, '=')))
+ {
+ /* allow spaces around "=" */
+ for (arg = p+1; *arg == ' '; arg++);
+ for (; p >= start && (*p == ' ' || *p == '='); p--)
+ *p = 0;
+ }
+ else
+ arg = NULL;
+
+ if (hard_opt != 0)
+ option = hard_opt;
+ else
+ {
+ for (option = 0, i = 0; opts[i].name; i++)
+ if (strcmp(opts[i].name, start) == 0)
+ {
+ option = opts[i].val;
+ break;
+ }
+
+ if (!option)
+ errmess = _("bad option");
+ else if (opts[i].has_arg == 0 && arg)
+ errmess = _("extraneous parameter");
+ else if (opts[i].has_arg == 1 && !arg)
+ errmess = _("missing parameter");
+ }
+
+ if (!errmess)
+ errmess = one_opt(option, arg, _("error"), 0);
+
+ if (errmess)
+ {
+ oops:
+ sprintf(buff, _("%s at line %d of %%s"), errmess, lineno);
+ if (hard_opt != 0)
+ my_syslog(LOG_ERR, buff, file);
+ else
+ die(buff, file, EC_BADCONF);
+ }
+ }
+
+ mem_recover = 0;
+ fclose(f);
+}
+
+static void one_file(char *file, int hard_opt)
+{
+ FILE *f;
+ int nofile_ok = 0;
+ static int read_stdin = 0;
+ static struct fileread {
+ dev_t dev;
+ ino_t ino;
+ struct fileread *next;
+ } *filesread = NULL;
+
+ if (hard_opt == '7')
+ {
+ /* default conf-file reading */
+ hard_opt = 0;
+ nofile_ok = 1;
+ }
+
+ if (hard_opt == 0 && strcmp(file, "-") == 0)
+ {
+ if (read_stdin == 1)
+ return;
+ read_stdin = 1;
+ file = "stdin";
+ f = stdin;
+ }
+ else
+ {
+ /* ignore repeated files. */
+ struct stat statbuf;
+
+ if (hard_opt == 0 && stat(file, &statbuf) == 0)
+ {
+ struct fileread *r;
+
+ for (r = filesread; r; r = r->next)
+ if (r->dev == statbuf.st_dev && r->ino == statbuf.st_ino)
+ return;
+
+ r = safe_malloc(sizeof(struct fileread));
+ r->next = filesread;
+ filesread = r;
+ r->dev = statbuf.st_dev;
+ r->ino = statbuf.st_ino;
+ }
+
+ if (!(f = fopen(file, "r")))
+ {
+ if (errno == ENOENT && nofile_ok)
+ return; /* No conffile, all done. */
+ else
+ {
+ char *str = _("cannot read %s: %s");
+ if (hard_opt != 0)
+ {
+ my_syslog(LOG_ERR, str, file, strerror(errno));
+ return;
+ }
+ else
+ die(str, file, EC_FILE);
+ }
+ }
+ }
+
+ read_file(file, f, hard_opt);
+}
+
+/* expand any name which is a directory */
+struct hostsfile *expand_filelist(struct hostsfile *list)
+{
+ int i;
+ struct hostsfile *ah;
+
+ for (i = 0, ah = list; ah; ah = ah->next)
+ {
+ if (i <= ah->index)
+ i = ah->index + 1;
+
+ if (ah->flags & AH_DIR)
+ ah->flags |= AH_INACTIVE;
+ else
+ ah->flags &= ~AH_INACTIVE;
+ }
+
+ for (ah = list; ah; ah = ah->next)
+ if (!(ah->flags & AH_INACTIVE))
+ {
+ struct stat buf;
+ if (stat(ah->fname, &buf) != -1 && S_ISDIR(buf.st_mode))
+ {
+ DIR *dir_stream;
+ struct dirent *ent;
+
+ /* don't read this as a file */
+ ah->flags |= AH_INACTIVE;
+
+ if (!(dir_stream = opendir(ah->fname)))
+ my_syslog(LOG_ERR, _("cannot access directory %s: %s"),
+ ah->fname, strerror(errno));
+ else
+ {
+ while ((ent = readdir(dir_stream)))
+ {
+ size_t lendir = strlen(ah->fname);
+ size_t lenfile = strlen(ent->d_name);
+ struct hostsfile *ah1;
+ char *path;
+
+ /* ignore emacs backups and dotfiles */
+ if (lenfile == 0 ||
+ ent->d_name[lenfile - 1] == '~' ||
+ (ent->d_name[0] == '#' && ent->d_name[lenfile - 1] == '#') ||
+ ent->d_name[0] == '.')
+ continue;
+
+ /* see if we have an existing record.
+ dir is ah->fname
+ file is ent->d_name
+ path to match is ah1->fname */
+
+ for (ah1 = list; ah1; ah1 = ah1->next)
+ {
+ if (lendir < strlen(ah1->fname) &&
+ strstr(ah1->fname, ah->fname) == ah1->fname &&
+ ah1->fname[lendir] == '/' &&
+ strcmp(ah1->fname + lendir + 1, ent->d_name) == 0)
+ {
+ ah1->flags &= ~AH_INACTIVE;
+ break;
+ }
+ }
+
+ /* make new record */
+ if (!ah1)
+ {
+ if (!(ah1 = whine_malloc(sizeof(struct hostsfile))))
+ continue;
+
+ if (!(path = whine_malloc(lendir + lenfile + 2)))
+ {
+ free(ah1);
+ continue;
+ }
+
+ strcpy(path, ah->fname);
+ strcat(path, "/");
+ strcat(path, ent->d_name);
+ ah1->fname = path;
+ ah1->index = i++;
+ ah1->flags = AH_DIR;
+ ah1->next = list;
+ list = ah1;
+ }
+
+ /* inactivate record if not regular file */
+ if ((ah1->flags & AH_DIR) && stat(ah1->fname, &buf) != -1 && !S_ISREG(buf.st_mode))
+ ah1->flags |= AH_INACTIVE;
+
+ }
+ closedir(dir_stream);
+ }
+ }
+ }
+
+ return list;
+}
+
+
+#ifdef HAVE_DHCP
+void reread_dhcp(void)
+{
+ struct hostsfile *hf;
+
+ if (daemon->dhcp_hosts_file)
+ {
+ struct dhcp_config *configs, *cp, **up;
+
+ /* remove existing... */
+ for (up = &daemon->dhcp_conf, configs = daemon->dhcp_conf; configs; configs = cp)
+ {
+ cp = configs->next;
+
+ if (configs->flags & CONFIG_BANK)
+ {
+ struct hwaddr_config *mac, *tmp;
+ struct dhcp_netid_list *list, *tmplist;
+
+ for (mac = configs->hwaddr; mac; mac = tmp)
+ {
+ tmp = mac->next;
+ free(mac);
+ }
+
+ if (configs->flags & CONFIG_CLID)
+ free(configs->clid);
+
+ for (list = configs->netid; list; list = tmplist)
+ {
+ free(list->list);
+ tmplist = list->next;
+ free(list);
+ }
+
+ if (configs->flags & CONFIG_NAME)
+ free(configs->hostname);
+
+ *up = configs->next;
+ free(configs);
+ }
+ else
+ up = &configs->next;
+ }
+
+ daemon->dhcp_hosts_file = expand_filelist(daemon->dhcp_hosts_file);
+ for (hf = daemon->dhcp_hosts_file; hf; hf = hf->next)
+ if (!(hf->flags & AH_INACTIVE))
+ {
+ one_file(hf->fname, LOPT_BANK);
+ my_syslog(MS_DHCP | LOG_INFO, _("read %s"), hf->fname);
+ }
+ }
+
+ if (daemon->dhcp_opts_file)
+ {
+ struct dhcp_opt *opts, *cp, **up;
+ struct dhcp_netid *id, *next;
+
+ for (up = &daemon->dhcp_opts, opts = daemon->dhcp_opts; opts; opts = cp)
+ {
+ cp = opts->next;
+
+ if (opts->flags & DHOPT_BANK)
+ {
+ if ((opts->flags & DHOPT_VENDOR))
+ free(opts->u.vendor_class);
+ free(opts->val);
+ for (id = opts->netid; id; id = next)
+ {
+ next = id->next;
+ free(id->net);
+ free(id);
+ }
+ *up = opts->next;
+ free(opts);
+ }
+ else
+ up = &opts->next;
+ }
+
+ daemon->dhcp_opts_file = expand_filelist(daemon->dhcp_opts_file);
+ for (hf = daemon->dhcp_opts_file; hf; hf = hf->next)
+ if (!(hf->flags & AH_INACTIVE))
+ {
+ one_file(hf->fname, LOPT_OPTS);
+ my_syslog(MS_DHCP | LOG_INFO, _("read %s"), hf->fname);
+ }
+ }
+}
+#endif
+
+void read_opts(int argc, char **argv, char *compile_opts)
+{
+ char *buff = opt_malloc(MAXDNAME);
+ int option, conffile_opt = '7', testmode = 0;
+ char *errmess, *arg, *conffile = CONFFILE;
+
+ opterr = 0;
+
+ daemon = opt_malloc(sizeof(struct daemon));
+ memset(daemon, 0, sizeof(struct daemon));
+ daemon->namebuff = buff;
+
+ /* Set defaults - everything else is zero or NULL */
+ daemon->cachesize = CACHESIZ;
+ daemon->ftabsize = FTABSIZ;
+ daemon->port = NAMESERVER_PORT;
+ daemon->dhcp_client_port = DHCP_CLIENT_PORT;
+ daemon->dhcp_server_port = DHCP_SERVER_PORT;
+ daemon->default_resolv.is_default = 1;
+ daemon->default_resolv.name = RESOLVFILE;
+ daemon->resolv_files = &daemon->default_resolv;
+ daemon->username = CHUSER;
+ daemon->runfile = RUNFILE;
+ daemon->dhcp_max = MAXLEASES;
+ daemon->tftp_max = TFTP_MAX_CONNECTIONS;
+ daemon->edns_pktsz = EDNS_PKTSZ;
+ daemon->log_fac = -1;
+ add_txt("version.bind", "dnsmasq-" VERSION );
+ add_txt("authors.bind", "Simon Kelley");
+ add_txt("copyright.bind", COPYRIGHT);
+
+ while (1)
+ {
+#ifdef HAVE_GETOPT_LONG
+ option = getopt_long(argc, argv, OPTSTRING, opts, NULL);
+#else
+ option = getopt(argc, argv, OPTSTRING);
+#endif
+
+ if (option == -1)
+ {
+ for (; optind < argc; optind++)
+ {
+ unsigned char *c = (unsigned char *)argv[optind];
+ for (; *c != 0; c++)
+ if (!isspace(*c))
+ die(_("junk found in command line"), NULL, EC_BADCONF);
+ }
+ break;
+ }
+
+ /* Copy optarg so that argv doesn't get changed */
+ if (optarg)
+ {
+ strncpy(buff, optarg, MAXDNAME);
+ buff[MAXDNAME-1] = 0;
+ arg = buff;
+ }
+ else
+ arg = NULL;
+
+ /* command-line only stuff */
+ if (option == LOPT_TEST)
+ testmode = 1;
+ else if (option == 'w')
+ {
+ if (argc != 3 || strcmp(argv[2], "dhcp") != 0)
+ do_usage();
+#ifdef HAVE_DHCP
+ else
+ display_opts();
+#endif
+ exit(0);
+ }
+ else if (option == 'v')
+ {
+ printf(_("Dnsmasq version %s %s\n"), VERSION, COPYRIGHT);
+ printf(_("Compile time options %s\n\n"), compile_opts);
+ printf(_("This software comes with ABSOLUTELY NO WARRANTY.\n"));
+ printf(_("Dnsmasq is free software, and you are welcome to redistribute it\n"));
+ printf(_("under the terms of the GNU General Public License, version 2 or 3.\n"));
+ exit(0);
+ }
+ else if (option == 'C')
+ {
+ conffile_opt = 0; /* file must exist */
+ conffile = opt_string_alloc(arg);
+ }
+ else
+ {
+#ifdef HAVE_GETOPT_LONG
+ errmess = one_opt(option, arg, _("try --help"), 1);
+#else
+ errmess = one_opt(option, arg, _("try -w"), 1);
+#endif
+ if (errmess)
+ die(_("bad command line options: %s"), errmess, EC_BADCONF);
+ }
+ }
+
+ if (conffile)
+ one_file(conffile, conffile_opt);
+
+ /* port might not be known when the address is parsed - fill in here */
+ if (daemon->servers)
+ {
+ struct server *tmp;
+ for (tmp = daemon->servers; tmp; tmp = tmp->next)
+ if (!(tmp->flags & SERV_HAS_SOURCE))
+ {
+ if (tmp->source_addr.sa.sa_family == AF_INET)
+ tmp->source_addr.in.sin_port = htons(daemon->query_port);
+#ifdef HAVE_IPV6
+ else if (tmp->source_addr.sa.sa_family == AF_INET6)
+ tmp->source_addr.in6.sin6_port = htons(daemon->query_port);
+#endif
+ }
+ }
+
+ if (daemon->if_addrs)
+ {
+ struct iname *tmp;
+ for(tmp = daemon->if_addrs; tmp; tmp = tmp->next)
+ if (tmp->addr.sa.sa_family == AF_INET)
+ tmp->addr.in.sin_port = htons(daemon->port);
+#ifdef HAVE_IPV6
+ else if (tmp->addr.sa.sa_family == AF_INET6)
+ tmp->addr.in6.sin6_port = htons(daemon->port);
+#endif /* IPv6 */
+ }
+
+ /* only one of these need be specified: the other defaults to the host-name */
+ if (option_bool(OPT_LOCALMX) || daemon->mxnames || daemon->mxtarget)
+ {
+ struct mx_srv_record *mx;
+
+ if (gethostname(buff, MAXDNAME) == -1)
+ die(_("cannot get host-name: %s"), NULL, EC_MISC);
+
+ for (mx = daemon->mxnames; mx; mx = mx->next)
+ if (!mx->issrv && hostname_isequal(mx->name, buff))
+ break;
+
+ if ((daemon->mxtarget || option_bool(OPT_LOCALMX)) && !mx)
+ {
+ mx = opt_malloc(sizeof(struct mx_srv_record));
+ mx->next = daemon->mxnames;
+ mx->issrv = 0;
+ mx->target = NULL;
+ mx->name = opt_string_alloc(buff);
+ daemon->mxnames = mx;
+ }
+
+ if (!daemon->mxtarget)
+ daemon->mxtarget = opt_string_alloc(buff);
+
+ for (mx = daemon->mxnames; mx; mx = mx->next)
+ if (!mx->issrv && !mx->target)
+ mx->target = daemon->mxtarget;
+ }
+
+ if (!option_bool(OPT_NO_RESOLV) &&
+ daemon->resolv_files &&
+ daemon->resolv_files->next &&
+ option_bool(OPT_NO_POLL))
+ die(_("only one resolv.conf file allowed in no-poll mode."), NULL, EC_BADCONF);
+
+ if (option_bool(OPT_RESOLV_DOMAIN))
+ {
+ char *line;
+ FILE *f;
+
+ if (option_bool(OPT_NO_RESOLV) ||
+ !daemon->resolv_files ||
+ (daemon->resolv_files)->next)
+ die(_("must have exactly one resolv.conf to read domain from."), NULL, EC_BADCONF);
+
+ if (!(f = fopen((daemon->resolv_files)->name, "r")))
+ die(_("failed to read %s: %s"), (daemon->resolv_files)->name, EC_FILE);
+
+ while ((line = fgets(buff, MAXDNAME, f)))
+ {
+ char *token = strtok(line, " \t\n\r");
+
+ if (!token || strcmp(token, "search") != 0)
+ continue;
+
+ if ((token = strtok(NULL, " \t\n\r")) &&
+ (daemon->domain_suffix = canonicalise_opt(token)))
+ break;
+ }
+
+ fclose(f);
+
+ if (!daemon->domain_suffix)
+ die(_("no search directive found in %s"), (daemon->resolv_files)->name, EC_MISC);
+ }
+
+ if (daemon->domain_suffix)
+ {
+ /* add domain for any srv record without one. */
+ struct mx_srv_record *srv;
+
+ for (srv = daemon->mxnames; srv; srv = srv->next)
+ if (srv->issrv &&
+ strchr(srv->name, '.') &&
+ strchr(srv->name, '.') == strrchr(srv->name, '.'))
+ {
+ strcpy(buff, srv->name);
+ strcat(buff, ".");
+ strcat(buff, daemon->domain_suffix);
+ free(srv->name);
+ srv->name = opt_string_alloc(buff);
+ }
+ }
+ else if (option_bool(OPT_DHCP_FQDN))
+ die(_("there must be a default domain when --dhcp-fqdn is set"), NULL, EC_BADCONF);
+
+ if (testmode)
+ {
+ fprintf(stderr, "dnsmasq: %s.\n", _("syntax check OK"));
+ exit(0);
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 10:22:13 +0000