| /* dnsmasq is Copyright (c) 2000-2008 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> |
| |
| /* 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 }, |
| #ifdef LOG_AUDIT |
| /* Not Solaris < 10 */ |
| { "audit", LOG_AUDIT }, |
| #endif |
| { "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 |
| |
| #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", 0, 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 }, |
| #ifdef HAVE_BSD_BRIDGE |
| {"bridge-interface", 1, 0 , LOPT_BRIDGE }, |
| #endif |
| {"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 }, |
| {"all-servers", 0, 0, LOPT_NOLAST}, |
| {"dhcp-match", 1, 0, LOPT_MATCH }, |
| {"dhcp-broadcast", 1, 0, LOPT_BROADCAST }, |
| {"neg-ttl", 1, 0, LOPT_NEGTTL }, |
| {"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 }, |
| { NULL, 0, 0, 0 } |
| }; |
| |
| /* These must have more the one '1' bit */ |
| #define ARG_DUP 3 |
| #define ARG_ONE 5 |
| #define ARG_USED_CL 7 |
| #define ARG_USED_FILE 9 |
| |
| 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_ONE, "<filename>", gettext_noop("Read DHCP host specs from file"), NULL }, |
| { LOPT_DHCP_OPTS, ARG_ONE, "<filename>", gettext_noop("Read DHCP option specs from file"), 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, "<tag>,<class>", gettext_noop("Map DHCP user class to tag."), NULL }, |
| { LOPT_CIRCUIT, ARG_DUP, "<tag>,<circuit>", gettext_noop("Map RFC3046 circuit-id to tag."), NULL }, |
| { LOPT_REMOTE, ARG_DUP, "<tag>,<remote>", gettext_noop("Map RFC3046 remote-id to tag."), NULL }, |
| { LOPT_SUBSCR, ARG_DUP, "<tag>,<remote>", gettext_noop("Map RFC3993 subscriber-id to tag."), NULL }, |
| { 'J', ARG_DUP, "=<id>[,<id>]", gettext_noop("Don't do DHCP for hosts with tag set."), NULL }, |
| { LOPT_BROADCAST, ARG_DUP, "=<id>[,<id>]", 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 }, |
| { 'u', ARG_ONE, "username", gettext_noop("Change to this user after startup. (defaults to %s)."), CHUSER }, |
| { 'U', ARG_DUP, "<id>,<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, "[=<id>[,<id>]]", gettext_noop("Enable dynamic address allocation for bootp."), NULL }, |
| { '4', ARG_DUP, "<id>,<mac address>", gettext_noop("Map MAC address (with wildcards) to option set."), NULL }, |
| #ifdef HAVE_BSD_BRIDGE |
| { LOPT_BRIDGE, ARG_DUP, "iface,alias,..", gettext_noop("Treat DHCP requests on aliases as arriving from interface."), NULL }, |
| #endif |
| { '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, "[=<id>[,<id>]]", 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, OPT_TFTP, NULL, gettext_noop("Enable integrated read-only TFTP server."), NULL }, |
| { LOPT_PREFIX, ARG_ONE, "<directory>", 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_NOLAST, OPT_ALL_SERVERS, NULL, gettext_noop("Always perform DNS queries to all servers."), NULL }, |
| { LOPT_MATCH, ARG_DUP, "<netid>,<opt-no>", gettext_noop("Set tag if client includes 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_CNAME, ARG_DUP, "<alias>,<target>", gettext_noop("Specify alias name for LOCAL DNS name."), NULL }, |
| { 0, 0, NULL, NULL, NULL } |
| }; |
| |
| /* makes options which take a list of addresses */ |
| #define OT_ADDR_LIST 255 |
| /* DHCP-internal options, for logging. not valid in config file */ |
| #define OT_INTERNAL 254 |
| |
| 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 }, |
| { "boot-file-size", 13, 2 }, |
| { "domain-name", 15, 0 }, |
| { "swap-server", 16, OT_ADDR_LIST }, |
| { "root-path", 17, 0 }, |
| { "extension-path", 18, 0 }, |
| { "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 }, |
| { "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, 0 }, |
| { "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 }, |
| { "lease-time", 51, OT_INTERNAL }, |
| { "option-overload", 52, OT_INTERNAL }, |
| { "message-type", 53, OT_INTERNAL, }, |
| { "server-identifier", 54, OT_INTERNAL }, |
| { "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, 0 }, |
| { "nis+-server", 65, OT_ADDR_LIST }, |
| { "tftp-server", 66, 0 }, |
| { "bootfile-name", 67, 0 }, |
| { "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 }, |
| { "subnet-select", 118, OT_INTERNAL }, |
| { "domain-search", 119, 0 }, |
| { "sip-server", 120, 0 }, |
| { "classless-static-route", 121, 0 }, |
| { NULL, 0, 0 } |
| }; |
| |
| static volatile int mem_recover = 0; |
| static jmp_buf mem_jmp; |
| static void one_file(char *file, int nest, int hard_opt); |
| |
| char *option_string(unsigned char opt) |
| { |
| int i; |
| |
| for (i = 0; opttab[i].name; i++) |
| if (opttab[i].val == opt) |
| return opttab[i].name; |
| |
| return NULL; |
| } |
| |
| /* 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(char *s) |
| { |
| char *comma, *p; |
| |
| if (!s || !(comma = strchr(s, ','))) |
| return NULL; |
| |
| p = comma; |
| *comma = ' '; |
| |
| for (; isspace((int)*comma); comma++); |
| |
| for (; (p >= s) && isspace((int)*p); p--) |
| *p = 0; |
| |
| return comma; |
| } |
| |
| static int canonicalise_opt(char *s) |
| { |
| if (!s) |
| return 0; |
| |
| unhide_metas(s); |
| return canonicalise(s); |
| } |
| |
| 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("%-36.36s", 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"); |
| } |
| } |
| |
| 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); |
| } |
| |
| /* 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->vendor_class = 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->vendor_class = (unsigned char *)opt_string_alloc(arg+7); |
| new->flags |= DHOPT_ENCAPSULATE; |
| } |
| else |
| { |
| new->netid = opt_malloc(sizeof (struct dhcp_netid)); |
| /* allow optional "net:" for consistency */ |
| if (strstr(arg, "net:") == arg) |
| new->netid->net = opt_string_alloc(arg+4); |
| else |
| new->netid->net = opt_string_alloc(arg); |
| new->netid->next = np; |
| np = new->netid; |
| } |
| |
| arg = comma; |
| } |
| |
| if (new->opt == 0) |
| problem = _("bad dhcp-option"); |
| else if (comma) |
| { |
| /* characterise the value */ |
| char c; |
| 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'))) |
| is_hex = 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"); |
| } |
| |
| if (is_hex && digs > 1) |
| { |
| new->len = digs; |
| new->val = opt_malloc(new->len); |
| parse_hex(comma, new->val, digs, NULL, NULL); |
| } |
| 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) && new->opt == 120) |
| { |
| *(op++) = 1; /* RFC 3361 "enc byte" */ |
| new->flags &= ~DHOPT_ADDR; |
| } |
| while (addrs--) |
| { |
| cp = comma; |
| comma = split(cp); |
| if ((slash = strchr(cp, '/'))) |
| *slash++ = 0; |
| in.s_addr = inet_addr(cp); |
| if (!slash) |
| { |
| memcpy(op, &in, INADDRSZ); |
| op += INADDRSZ; |
| } |
| else |
| { |
| unsigned char *p = (unsigned char *)∈ |
| 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 == 119 || new->opt == 120) && !(new->flags & DHOPT_ENCAPSULATE)) |
| { |
| /* 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 == 119) ? 0 : 1; |
| |
| arg = comma; |
| comma = split(arg); |
| |
| while (arg && *arg) |
| { |
| if (!canonicalise_opt(arg)) |
| { |
| problem = _("bad domain in dhcp-option"); |
| break; |
| } |
| |
| newp = opt_malloc(len + strlen(arg) + 2 + header_size); |
| if (m) |
| memcpy(newp, m, header_size + len); |
| m = newp; |
| p = m + header_size; |
| q = p + len; |
| |
| /* add string on the end in RFC1035 format */ |
| while (*arg) |
| { |
| unsigned char *cp = q++; |
| int j; |
| for (j = 0; *arg && (*arg != '.'); arg++, j++) |
| *q++ = *arg; |
| *cp = j; |
| if (*arg) |
| arg++; |
| } |
| *q++ = 0; |
| |
| /* 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 == 120) |
| 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) |
| problem = _("dhcp-option too long"); |
| |
| if (!problem) |
| { |
| new->next = daemon->dhcp_opts; |
| daemon->dhcp_opts = new; |
| } |
| |
| return problem; |
| } |
| |
| |
| static char *one_opt(int option, char *arg, char *gen_prob, int nest) |
| { |
| 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 (nest == 0) |
| { |
| /* 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) |
| { |
| daemon->options |= rept; |
| return NULL; |
| } |
| |
| break; |
| } |
| |
| switch (option) |
| { |
| case 'C': /* --conf-file */ |
| { |
| char *file = opt_string_alloc(arg); |
| if (file) |
| { |
| one_file(file, nest, 0); |
| free(file); |
| } |
| break; |
| } |
| |
| case '7': /* --conf-dir */ |
| { |
| DIR *dir_stream; |
| struct dirent *ent; |
| char *directory, *path; |
| |
| if (!(directory = opt_string_alloc(arg))) |
| break; |
| |
| if (!(dir_stream = opendir(directory))) |
| die(_("cannot access directory %s: %s"), directory, EC_FILE); |
| |
| while ((ent = readdir(dir_stream))) |
| { |
| size_t len; |
| struct stat buf; |
| |
| if ((len = strlen(ent->d_name)) == 0) |
| continue; |
| /* ignore emacs backups and dotfiles */ |
| if (ent->d_name[len - 1] == '~' || |
| (ent->d_name[0] == '#' && ent->d_name[len - 1] == '#') || |
| ent->d_name[0] == '.') |
| 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; |
| |
| /* dir is one level, so files must be readable */ |
| one_file(path, nest + 1, 0); |
| free(path); |
| } |
| |
| closedir(dir_stream); |
| free(directory); |
| break; |
| } |
| |
| case '8': /* --log-facility */ |
| /* may be a filename */ |
| if (strchr(arg, '/')) |
| daemon->log_file = opt_string_alloc(arg); |
| 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"; |
| } |
| break; |
| |
| case 'x': /* --pid-file */ |
| daemon->runfile = opt_string_alloc(arg); |
| break; |
| |
| case LOPT_DHCP_HOST: /* --dhcp-hostfile */ |
| if (daemon->dhcp_hosts_file) |
| problem = _("only one dhcp-hostsfile allowed"); |
| else |
| daemon->dhcp_hosts_file = opt_string_alloc(arg); |
| break; |
| |
| case LOPT_DHCP_OPTS: /* --dhcp-optsfile */ |
| if (daemon->dhcp_opts_file) |
| problem = _("only one dhcp-optsfile allowed"); |
| else |
| daemon->dhcp_opts_file = 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; |
| |
| if ((comma = split(arg))) |
| { |
| char *prefstr; |
| if ((prefstr=split(comma)) && !atoi_check16(prefstr, &pref)) |
| problem = _("bad MX preference"); |
| } |
| |
| if (!canonicalise_opt(arg) || (comma && !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 = opt_string_alloc(arg); |
| new->target = opt_string_alloc(comma); /* may be NULL */ |
| new->weight = pref; |
| break; |
| } |
| |
| case 't': /* --mx-target */ |
| if (!canonicalise_opt(arg)) |
| problem = _("bad MX target"); |
| else |
| daemon->mxtarget = opt_string_alloc(arg); |
| break; |
| |
| case 'l': /* --dhcp-leasefile */ |
| daemon->lease_file = opt_string_alloc(arg); |
| break; |
| |
| case '6': /* --dhcp-script */ |
| #ifdef NO_FORK |
| problem = _("cannot run scripts under uClinux"); |
| #else |
| daemon->lease_change_command = opt_string_alloc(arg); |
| #endif |
| break; |
| |
| 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->next = daemon->addn_hosts; |
| daemon->addn_hosts = new; |
| break; |
| } |
| |
| case 's': /* --domain */ |
| if (strcmp (arg, "#") == 0) |
| daemon->options |= OPT_RESOLV_DOMAIN; |
| else |
| { |
| comma = split(arg); |
| if (!canonicalise_opt(arg)) |
| option = '?'; |
| else |
| { |
| char *d = opt_string_alloc(arg); |
| if (comma) |
| { |
| struct cond_domain *new = safe_malloc(sizeof(struct cond_domain)); |
| unhide_metas(comma); |
| if ((arg = strchr(comma, '/'))) |
| { |
| int mask; |
| *arg++ = 0; |
| if ((new->start.s_addr = inet_addr(comma)) == (in_addr_t)-1 || |
| !atoi_check(arg, &mask)) |
| option = '?'; |
| else |
| { |
| mask = (1 << (32 - mask)) - 1; |
| new->start.s_addr = ntohl(htonl(new->start.s_addr) & ~mask); |
| new->end.s_addr = new->start.s_addr | htonl(mask); |
| } |
| } |
| 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; |
| |
| case LOPT_SCRIPTUSR: /* --scriptuser */ |
| daemon->scriptuser = opt_string_alloc(arg); |
| break; |
| |
| 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 */ |
| { |
| struct server *serv, *newlist = NULL; |
| |
| unhide_metas(arg); |
| |
| if (arg && *arg == '/') |
| { |
| char *end; |
| arg++; |
| while ((end = strchr(arg, '/'))) |
| { |
| char *domain = NULL; |
| *end = 0; |
| /* # matches everything and becomes a zero length domain string */ |
| if (strcmp(arg, "#") == 0) |
| domain = ""; |
| else if (!canonicalise_opt(arg) && strlen(arg) != 0) |
| option = '?'; |
| else |
| domain = opt_string_alloc(arg); /* NULL if strlen is zero */ |
| 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+1; |
| } |
| 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 = '?'; |
| } |
| |
| if (!arg || !*arg) |
| { |
| newlist->flags |= SERV_NO_ADDR; /* no server */ |
| if (newlist->flags & SERV_LITERAL_ADDRESS) |
| option = '?'; |
| } |
| else |
| { |
| int source_port = 0, serv_port = NAMESERVER_PORT; |
| char *portno, *source; |
| |
| if ((source = strchr(arg, '@'))) /* is there a source. */ |
| { |
| *source = 0; |
| if ((portno = strchr(source+1, '#'))) |
| { |
| *portno = 0; |
| if (!atoi_check16(portno+1, &source_port)) |
| problem = _("bad port"); |
| } |
| } |
| |
| if ((portno = strchr(arg, '#'))) /* is there a port no. */ |
| { |
| *portno = 0; |
| if (!atoi_check16(portno+1, &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+1)) == (in_addr_t) -1) |
| { |
| #if defined(SO_BINDTODEVICE) |
| newlist->source_addr.in.sin_addr.s_addr = INADDR_ANY; |
| strncpy(newlist->interface, source+1, IF_NAMESIZE); |
| #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+1, &newlist->source_addr.in6.sin6_addr) == 0) |
| { |
| #if defined(SO_BINDTODEVICE) || defined(HAVE_SOLARIS_NETWORK) |
| newlist->source_addr.in6.sin6_addr = in6addr_any; |
| strncpy(newlist->interface, source+1, IF_NAMESIZE); |
| #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 */ |
| { |
| int ttl; |
| if (!atoi_check(arg, &ttl)) |
| option = '?'; |
| else if (option == LOPT_NEGTTL) |
| daemon->neg_ttl = (unsigned long)ttl; |
| else |
| daemon->local_ttl = (unsigned long)ttl; |
| break; |
| } |
| |
| case 'X': /* --dhcp-lease-max */ |
| if (!atoi_check(arg, &daemon->dhcp_max)) |
| option = '?'; |
| break; |
| |
| case LOPT_TFTP_MAX: /* --tftp-max */ |
| if (!atoi_check(arg, &daemon->tftp_max)) |
| option = '?'; |
| break; |
| |
| case LOPT_PREFIX: /* --tftp-prefix */ |
| 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; |
| |
| #ifdef HAVE_BSD_BRIDGE |
| case LOPT_BRIDGE: /* --bridge-interface */ |
| { |
| struct dhcp_bridge *new = opt_malloc(sizeof(struct dhcp_bridge)); |
| if (!(comma = split(arg))) |
| { |
| problem = _("bad bridge-interface"); |
| break; |
| } |
| |
| strncpy(new->iface, arg, IF_NAMESIZE); |
| new->alias = NULL; |
| new->next = daemon->bridges; |
| daemon->bridges = new; |
| |
| do { |
| arg = comma; |
| comma = split(arg); |
| if (strlen(arg) != 0) |
| { |
| struct dhcp_bridge *b = opt_malloc(sizeof(struct dhcp_bridge)); |
| b->next = new->alias; |
| new->alias = b; |
| strncpy(b->iface, arg, IF_NAMESIZE); |
| } |
| } while (comma); |
| |
| break; |
| } |
| #endif |
| |
| 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; |
| |
| 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, "net:") == 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 netid tag allowed"); |
| 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 (option == '?' || (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 ((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; |
| |
| 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 ((new->clid = opt_malloc(len))) |
| { |
| new->flags |= CONFIG_CLID; |
| new->clid_len = len; |
| memcpy(new->clid, arg, len); |
| } |
| } |
| } |
| else if (strstr(arg, "net:") == arg) |
| { |
| int len = strlen(arg + 4) + 1; |
| if ((new->netid.net = opt_malloc(len))) |
| { |
| new->flags |= CONFIG_NETID; |
| strcpy(new->netid.net, arg+4); |
| unhide_metas(new->netid.net); |
| } |
| } |
| else |
| { |
| struct hwaddr_config *newhw = opt_malloc(sizeof(struct hwaddr_config)); |
| newhw->next = new->hwaddr; |
| new->hwaddr = newhw; |
| newhw->hwaddr_len = parse_hex(a[j], newhw->hwaddr, DHCP_CHADDR_MAX, |
| &newhw->wildcard_mask, &newhw->hwaddr_type); |
| } |
| } |
| 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((int)*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 |
| { |
| int len = strlen(a[j]) + 1; |
| if (!canonicalise_opt(a[j])) |
| problem = _("bad DHCP host name"); |
| else if ((new->hostname = opt_malloc(len))) |
| { |
| new->flags |= CONFIG_NAME; |
| strcpy(new->hostname, a[j]); |
| 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 'O': |
| case LOPT_FORCE: |
| case LOPT_OPTS: |
| problem = parse_dhcp_opt(arg, |
| option == LOPT_FORCE ? DHOPT_FORCE : |
| (option == LOPT_OPTS ? DHOPT_BANK : 0)); |
| break; |
| |
| case 'M': /* --dhcp-boot */ |
| { |
| struct dhcp_netid *id = NULL; |
| while (arg && strstr(arg, "net:") == 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 '4': /* --dhcp-mac */ |
| { |
| if (!(comma = split(arg))) |
| option = '?'; |
| else |
| { |
| struct dhcp_mac *new = opt_malloc(sizeof(struct dhcp_mac)); |
| if (strstr(arg, "net:") == arg) |
| new->netid.net = opt_string_alloc(arg+4); |
| else |
| new->netid.net = opt_string_alloc(arg); |
| unhide_metas(comma); |
| new->hwaddr_len = parse_hex(comma, new->hwaddr, DHCP_CHADDR_MAX, &new->mask, &new->hwaddr_type); |
| 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 */ |
| case LOPT_MATCH: /* --dhcp-match */ |
| { |
| if (!(comma = split(arg))) |
| option = '?'; |
| else |
| { |
| char *p; |
| int dig = 0; |
| struct dhcp_vendor *new = opt_malloc(sizeof(struct dhcp_vendor)); |
| if (strstr(arg, "net:") == arg) |
| new->netid.net = opt_string_alloc(arg+4); |
| else |
| new->netid.net = opt_string_alloc(arg); |
| /* check for hex string - must digits may include : must not have nothing else, |
| only allowed for agent-options. */ |
| for (p = comma; *p; p++) |
| if (isxdigit((int)*p)) |
| dig = 1; |
| else if (*p != ':') |
| break; |
| unhide_metas(comma); |
| if (option == LOPT_MATCH) |
| new->option = atoi(comma); |
| else 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; |
| case LOPT_MATCH: |
| new->match_type = MATCH_OPTION; |
| 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 */ |
| { |
| 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 |
| { |
| 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 (strstr(arg, "net:") == arg) |
| member->net = opt_string_alloc(arg+4); |
| else |
| member->net = opt_string_alloc(arg); |
| arg = comma; |
| } |
| |
| new->list = list; |
| break; |
| } |
| |
| case 'V': /* --alias */ |
| { |
| char *a[3] = { NULL, NULL, NULL }; |
| int k = 0; |
| struct in_addr in, out, mask; |
| struct doctor *new; |
| |
| mask.s_addr = 0xffffffff; |
| |
| if ((a[0] = arg)) |
| for (k = 1; k < 3; k++) |
| { |
| if (!(a[k] = split(a[k-1]))) |
| break; |
| unhide_metas(a[k]); |
| } |
| |
| if ((k < 2) || |
| ((in.s_addr = inet_addr(a[0])) == (in_addr_t)-1) || |
| ((out.s_addr = inet_addr(a[1])) == (in_addr_t)-1)) |
| { |
| option = '?'; |
| break; |
| } |
| |
| if (k == 3) |
| mask.s_addr = inet_addr(a[2]); |
| |
| new = opt_malloc(sizeof(struct doctor)); |
| new->in = in; |
| new->out = out; |
| new->mask = mask; |
| new->next = daemon->doctors; |
| daemon->doctors = new; |
| |
| break; |
| } |
| |
| case LOPT_INTNAME: /* --interface-name */ |
| { |
| struct interface_name *new, **up; |
| |
| comma = split(arg); |
| |
| if (!comma || !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 = opt_string_alloc(arg); |
| new->intr = opt_string_alloc(comma); |
| break; |
| } |
| |
| case LOPT_CNAME: /* --cname */ |
| { |
| struct cname *new; |
| |
| if (!(comma = split(arg))) |
| option = '?'; |
| 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 = opt_string_alloc(arg); |
| new->target = opt_string_alloc(comma); |
| } |
| break; |
| } |
| |
| case LOPT_PTR: /* --ptr-record */ |
| { |
| struct ptr_record *new; |
| |
| comma = split(arg); |
| |
| if (!canonicalise_opt(arg)) |
| problem = _("bad PTR record"); |
| |
| new = opt_malloc(sizeof(struct ptr_record)); |
| new->next = daemon->ptr; |
| daemon->ptr = new; |
| new->name = opt_string_alloc(arg); |
| new->ptr = NULL; |
| if (comma) |
| new->ptr = opt_string_alloc(comma); |
| 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; |
| |
| if ((a[0] = arg)) |
| for (k = 1; k < 7; k++) |
| if (!(a[k] = split(a[k-1]))) |
| break; |
| |
| |
| if (k < 6 || |
| !canonicalise_opt(a[0]) || |
| !atoi_check16(a[1], &order) || |
| !atoi_check16(a[2], &pref) || |
| (k == 7 && !canonicalise_opt(a[6]))) |
| problem = _("bad NAPTR record"); |
| else |
| { |
| new = opt_malloc(sizeof(struct naptr)); |
| new->next = daemon->naptr; |
| daemon->naptr = new; |
| new->name = opt_string_alloc(a[0]); |
| new->flags = opt_string_alloc(a[3]); |
| new->services = opt_string_alloc(a[4]); |
| new->regexp = opt_string_alloc(a[5]); |
| if (k == 7) |
| new->replace = opt_string_alloc(a[6]); |
| new->order = order; |
| new->pref = pref; |
| } |
| break; |
| } |
| |
| case 'Y': /* --txt-record */ |
| { |
| struct txt_record *new; |
| unsigned char *p, *q; |
| |
| if ((comma = split(arg))) |
| comma--; |
| |
| gen_prob = _("TXT record string too long"); |
| |
| if (!canonicalise_opt(arg)) |
| { |
| problem = _("bad TXT record"); |
| break; |
| } |
| |
| if ((q = (unsigned char *)comma)) |
| while (1) |
| { |
| size_t len; |
| if ((p = (unsigned char *)strchr((char*)q+1, ','))) |
| { |
| if ((len = p - q - 1) > 255) |
| option = '?'; |
| *q = len; |
| for (q = q+1; q < p; q++) |
| *q = unhide_meta(*q); |
| } |
| else |
| { |
| if ((len = strlen((char *)q+1)) > 255) |
| option = '?'; |
| *q = len; |
| for (q = q+1; *q; q++) |
| *q = unhide_meta(*q); |
| break; |
| } |
| } |
| |
| new = opt_malloc(sizeof(struct txt_record)); |
| new->next = daemon->txt; |
| daemon->txt = new; |
| new->class = C_IN; |
| if (comma) |
| { |
| new->len = q - ((unsigned char *)comma); |
| new->txt = opt_malloc(new->len); |
| memcpy(new->txt, comma, new->len); |
| } |
| else |
| { |
| static char empty[] = ""; |
| new->len = 1; |
| new->txt = empty; |
| } |
| |
| /* ensure arg is terminated */ |
| if (comma) |
| *comma = 0; |
| new->name = opt_string_alloc(arg); |
| 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 (!canonicalise_opt(arg)) |
| problem = _("bad SRV record"); |
| |
| name = opt_string_alloc(arg); |
| |
| if (comma) |
| { |
| arg = comma; |
| comma = split(arg); |
| if (!canonicalise_opt(arg)) |
| problem = _("bad SRV target"); |
| |
| target = opt_string_alloc(arg); |
| 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; |
| } |
| } |
| |
| if (problem) |
| return problem; |
| |
| if (option == '?') |
| return gen_prob; |
| |
| return NULL; |
| } |
| |
| static void one_file(char *file, int nest, int hard_opt) |
| { |
| volatile int lineno = 0; |
| int i, option; |
| FILE *f; |
| char *p, *arg, *start, *buff = daemon->namebuff; |
| |
| if (nest > 20) |
| die(_("files nested too deep in %s"), file, EC_BADCONF); |
| |
| if (!(f = fopen(file, "r"))) |
| { |
| if (errno == ENOENT && nest == 0) |
| 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); |
| } |
| } |
| |
| while (fgets(buff, MAXDNAME, f)) |
| { |
| int white; |
| unsigned int lastquote; |
| char *errmess; |
| |
| /* 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, lastquote = 0, 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 == '"') |
| { |
| memmove(p, p+1, strlen(p+1)+1); |
| lastquote = p - buff; |
| } |
| else |
| { |
| errmess = _("missing \""); |
| goto oops; |
| } |
| } |
| |
| if (white && *p == '#') |
| { |
| *p = 0; |
| break; |
| } |
| white = isspace((int)unhide_meta(*p)); |
| } |
| |
| /* fgets gets end of line char too. */ |
| while (strlen(buff) > lastquote && isspace((int)unhide_meta(buff[strlen(buff)-1]))) |
| buff[strlen(buff)-1] = 0; |
| |
| if (*buff == 0) |
| continue; |
| |
| if (hard_opt != 0) |
| arg = buff; |
| else if ((p=strchr(buff, '='))) |
| { |
| /* allow spaces around "=" */ |
| arg = p+1; |
| for (; p >= buff && (isspace((int)*p) || *p == '='); p--) |
| *p = 0; |
| } |
| else |
| arg = NULL; |
| |
| if (hard_opt != 0) |
| option = hard_opt; |
| else |
| { |
| /* skip leading space */ |
| for (start = buff; *start && isspace((int)*start); start++); |
| |
| 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) |
| { |
| if (arg) |
| for (; isspace((int)*arg); arg++); |
| |
| errmess = one_opt(option, arg, _("error"), nest + 1); |
| } |
| |
| 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 = 1; |
| fclose(f); |
| } |
| |
| void reread_dhcp(void) |
| { |
| 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; |
| |
| for (mac = configs->hwaddr; mac; mac = tmp) |
| { |
| tmp = mac->next; |
| free(mac); |
| } |
| if (configs->flags & CONFIG_CLID) |
| free(configs->clid); |
| if (configs->flags & CONFIG_NETID) |
| free(configs->netid.net); |
| if (configs->flags & CONFIG_NAME) |
| free(configs->hostname); |
| |
| |
| *up = configs->next; |
| free(configs); |
| } |
| else |
| up = &configs->next; |
| } |
| |
| one_file(daemon->dhcp_hosts_file, 1, LOPT_BANK); |
| my_syslog(LOG_INFO, _("read %s"), daemon->dhcp_hosts_file); |
| } |
| |
| 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) |
| { |
| free(opts->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; |
| } |
| |
| one_file(daemon->dhcp_opts_file, 1, LOPT_OPTS); |
| my_syslog(LOG_INFO, _("read %s"), daemon->dhcp_opts_file); |
| } |
| } |
| |
| void read_opts(int argc, char **argv, char *compile_opts) |
| { |
| char *buff = opt_malloc(MAXDNAME); |
| int option, nest = 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) |
| 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 == 'w') |
| { |
| if (argc == 3 && strcmp(argv[2], "dhcp") == 0) |
| display_opts(); |
| else |
| do_usage(); |
| 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_string_alloc(arg); |
| nest++; |
| } |
| else |
| { |
| #ifdef HAVE_GETOPT_LONG |
| errmess = one_opt(option, arg, _("try --help"), 0); |
| #else |
| errmess = one_opt(option, arg, _("try -w"), 0); |
| #endif |
| if (errmess) |
| die(_("bad command line options: %s"), errmess, EC_BADCONF); |
| } |
| } |
| |
| if (conffile) |
| one_file(conffile, nest, 0); |
| |
| /* 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 ((daemon->options & 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 || (daemon->options & 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 (!(daemon->options & OPT_NO_RESOLV) && |
| daemon->resolv_files && |
| daemon->resolv_files->next && |
| (daemon->options & OPT_NO_POLL)) |
| die(_("only one resolv.conf file allowed in no-poll mode."), NULL, EC_BADCONF); |
| |
| if (daemon->options & OPT_RESOLV_DOMAIN) |
| { |
| char *line; |
| FILE *f; |
| |
| if ((daemon->options & 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")) && |
| canonicalise_opt(token) && |
| (daemon->domain_suffix = opt_string_alloc(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 (daemon->options & OPT_DHCP_FQDN) |
| die(_("there must be a default domain when --dhcp-fqdn is set"), NULL, EC_BADCONF); |
| } |