San Mehat | ffd6872 | 2010-01-20 09:56:15 -0800 | [diff] [blame] | 1 | /* dnsmasq is Copyright (c) 2000-2009 Simon Kelley |
| 2 | |
| 3 | This program is free software; you can redistribute it and/or modify |
| 4 | it under the terms of the GNU General Public License as published by |
| 5 | the Free Software Foundation; version 2 dated June, 1991, or |
| 6 | (at your option) version 3 dated 29 June, 2007. |
| 7 | |
| 8 | This program is distributed in the hope that it will be useful, |
| 9 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | GNU General Public License for more details. |
| 12 | |
| 13 | You should have received a copy of the GNU General Public License |
| 14 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 15 | */ |
| 16 | |
| 17 | /* define this to get facilitynames */ |
| 18 | #define SYSLOG_NAMES |
| 19 | #include "dnsmasq.h" |
| 20 | #include <setjmp.h> |
| 21 | |
| 22 | static volatile int mem_recover = 0; |
| 23 | static jmp_buf mem_jmp; |
| 24 | static void one_file(char *file, int nest, int hard_opt); |
| 25 | |
| 26 | /* Solaris headers don't have facility names. */ |
| 27 | #ifdef HAVE_SOLARIS_NETWORK |
| 28 | static const struct { |
| 29 | char *c_name; |
| 30 | unsigned int c_val; |
| 31 | } facilitynames[] = { |
| 32 | { "kern", LOG_KERN }, |
| 33 | { "user", LOG_USER }, |
| 34 | { "mail", LOG_MAIL }, |
| 35 | { "daemon", LOG_DAEMON }, |
| 36 | { "auth", LOG_AUTH }, |
| 37 | { "syslog", LOG_SYSLOG }, |
| 38 | { "lpr", LOG_LPR }, |
| 39 | { "news", LOG_NEWS }, |
| 40 | { "uucp", LOG_UUCP }, |
| 41 | { "audit", LOG_AUDIT }, |
| 42 | { "cron", LOG_CRON }, |
| 43 | { "local0", LOG_LOCAL0 }, |
| 44 | { "local1", LOG_LOCAL1 }, |
| 45 | { "local2", LOG_LOCAL2 }, |
| 46 | { "local3", LOG_LOCAL3 }, |
| 47 | { "local4", LOG_LOCAL4 }, |
| 48 | { "local5", LOG_LOCAL5 }, |
| 49 | { "local6", LOG_LOCAL6 }, |
| 50 | { "local7", LOG_LOCAL7 }, |
| 51 | { NULL, 0 } |
| 52 | }; |
| 53 | #endif |
| 54 | |
| 55 | #ifndef HAVE_GETOPT_LONG |
| 56 | struct myoption { |
| 57 | const char *name; |
| 58 | int has_arg; |
| 59 | int *flag; |
| 60 | int val; |
| 61 | }; |
| 62 | #endif |
| 63 | |
| 64 | #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:" |
| 65 | |
| 66 | /* options which don't have a one-char version */ |
| 67 | #define LOPT_RELOAD 256 |
| 68 | #define LOPT_NO_NAMES 257 |
| 69 | #define LOPT_TFTP 258 |
| 70 | #define LOPT_SECURE 259 |
| 71 | #define LOPT_PREFIX 260 |
| 72 | #define LOPT_PTR 261 |
| 73 | #define LOPT_BRIDGE 262 |
| 74 | #define LOPT_TFTP_MAX 263 |
| 75 | #define LOPT_FORCE 264 |
| 76 | #define LOPT_NOBLOCK 265 |
| 77 | #define LOPT_LOG_OPTS 266 |
| 78 | #define LOPT_MAX_LOGS 267 |
| 79 | #define LOPT_CIRCUIT 268 |
| 80 | #define LOPT_REMOTE 269 |
| 81 | #define LOPT_SUBSCR 270 |
| 82 | #define LOPT_INTNAME 271 |
| 83 | #define LOPT_BANK 272 |
| 84 | #define LOPT_DHCP_HOST 273 |
| 85 | #define LOPT_APREF 274 |
| 86 | #define LOPT_OVERRIDE 275 |
| 87 | #define LOPT_TFTPPORTS 276 |
| 88 | #define LOPT_REBIND 277 |
| 89 | #define LOPT_NOLAST 278 |
| 90 | #define LOPT_OPTS 279 |
| 91 | #define LOPT_DHCP_OPTS 280 |
| 92 | #define LOPT_MATCH 281 |
| 93 | #define LOPT_BROADCAST 282 |
| 94 | #define LOPT_NEGTTL 283 |
| 95 | #define LOPT_ALTPORT 284 |
| 96 | #define LOPT_SCRIPTUSR 285 |
| 97 | #define LOPT_LOCAL 286 |
| 98 | #define LOPT_NAPTR 287 |
| 99 | #define LOPT_MINPORT 288 |
| 100 | #define LOPT_DHCP_FQDN 289 |
| 101 | #define LOPT_CNAME 290 |
| 102 | #define LOPT_PXE_PROMT 291 |
| 103 | #define LOPT_PXE_SERV 292 |
| 104 | #define LOPT_TEST 293 |
| 105 | |
| 106 | #ifdef HAVE_GETOPT_LONG |
| 107 | static const struct option opts[] = |
| 108 | #else |
| 109 | static const struct myoption opts[] = |
| 110 | #endif |
| 111 | { |
| 112 | { "version", 0, 0, 'v' }, |
| 113 | { "no-hosts", 0, 0, 'h' }, |
| 114 | { "no-poll", 0, 0, 'n' }, |
| 115 | { "help", 0, 0, 'w' }, |
| 116 | { "no-daemon", 0, 0, 'd' }, |
| 117 | { "log-queries", 0, 0, 'q' }, |
| 118 | { "user", 2, 0, 'u' }, |
| 119 | { "group", 2, 0, 'g' }, |
| 120 | { "resolv-file", 2, 0, 'r' }, |
| 121 | { "mx-host", 1, 0, 'm' }, |
| 122 | { "mx-target", 1, 0, 't' }, |
| 123 | { "cache-size", 2, 0, 'c' }, |
| 124 | { "port", 1, 0, 'p' }, |
| 125 | { "dhcp-leasefile", 2, 0, 'l' }, |
| 126 | { "dhcp-lease", 1, 0, 'l' }, |
| 127 | { "dhcp-host", 1, 0, 'G' }, |
| 128 | { "dhcp-range", 1, 0, 'F' }, |
| 129 | { "dhcp-option", 1, 0, 'O' }, |
| 130 | { "dhcp-boot", 1, 0, 'M' }, |
| 131 | { "domain", 1, 0, 's' }, |
| 132 | { "domain-suffix", 1, 0, 's' }, |
| 133 | { "interface", 1, 0, 'i' }, |
| 134 | { "listen-address", 1, 0, 'a' }, |
| 135 | { "bogus-priv", 0, 0, 'b' }, |
| 136 | { "bogus-nxdomain", 1, 0, 'B' }, |
| 137 | { "selfmx", 0, 0, 'e' }, |
| 138 | { "filterwin2k", 0, 0, 'f' }, |
| 139 | { "pid-file", 2, 0, 'x' }, |
| 140 | { "strict-order", 0, 0, 'o' }, |
| 141 | { "server", 1, 0, 'S' }, |
| 142 | { "local", 1, 0, LOPT_LOCAL }, |
| 143 | { "address", 1, 0, 'A' }, |
| 144 | { "conf-file", 2, 0, 'C' }, |
| 145 | { "no-resolv", 0, 0, 'R' }, |
| 146 | { "expand-hosts", 0, 0, 'E' }, |
| 147 | { "localmx", 0, 0, 'L' }, |
| 148 | { "local-ttl", 1, 0, 'T' }, |
| 149 | { "no-negcache", 0, 0, 'N' }, |
| 150 | { "addn-hosts", 1, 0, 'H' }, |
| 151 | { "query-port", 1, 0, 'Q' }, |
| 152 | { "except-interface", 1, 0, 'I' }, |
| 153 | { "no-dhcp-interface", 1, 0, '2' }, |
| 154 | { "domain-needed", 0, 0, 'D' }, |
| 155 | { "dhcp-lease-max", 1, 0, 'X' }, |
| 156 | { "bind-interfaces", 0, 0, 'z' }, |
| 157 | { "read-ethers", 0, 0, 'Z' }, |
| 158 | { "alias", 1, 0, 'V' }, |
| 159 | { "dhcp-vendorclass", 1, 0, 'U' }, |
| 160 | { "dhcp-userclass", 1, 0, 'j' }, |
| 161 | { "dhcp-ignore", 1, 0, 'J' }, |
| 162 | { "edns-packet-max", 1, 0, 'P' }, |
| 163 | { "keep-in-foreground", 0, 0, 'k' }, |
| 164 | { "dhcp-authoritative", 0, 0, 'K' }, |
| 165 | { "srv-host", 1, 0, 'W' }, |
| 166 | { "localise-queries", 0, 0, 'y' }, |
| 167 | { "txt-record", 1, 0, 'Y' }, |
| 168 | { "enable-dbus", 0, 0, '1' }, |
| 169 | { "bootp-dynamic", 2, 0, '3' }, |
| 170 | { "dhcp-mac", 1, 0, '4' }, |
| 171 | { "no-ping", 0, 0, '5' }, |
| 172 | { "dhcp-script", 1, 0, '6' }, |
| 173 | { "conf-dir", 1, 0, '7' }, |
| 174 | { "log-facility", 1, 0 ,'8' }, |
| 175 | { "leasefile-ro", 0, 0, '9' }, |
| 176 | { "dns-forward-max", 1, 0, '0' }, |
| 177 | { "clear-on-reload", 0, 0, LOPT_RELOAD }, |
| 178 | { "dhcp-ignore-names", 2, 0, LOPT_NO_NAMES }, |
| 179 | { "enable-tftp", 0, 0, LOPT_TFTP }, |
| 180 | { "tftp-secure", 0, 0, LOPT_SECURE }, |
| 181 | { "tftp-unique-root", 0, 0, LOPT_APREF }, |
| 182 | { "tftp-root", 1, 0, LOPT_PREFIX }, |
| 183 | { "tftp-max", 1, 0, LOPT_TFTP_MAX }, |
| 184 | { "ptr-record", 1, 0, LOPT_PTR }, |
| 185 | { "naptr-record", 1, 0, LOPT_NAPTR }, |
| 186 | { "bridge-interface", 1, 0 , LOPT_BRIDGE }, |
| 187 | { "dhcp-option-force", 1, 0, LOPT_FORCE }, |
| 188 | { "tftp-no-blocksize", 0, 0, LOPT_NOBLOCK }, |
| 189 | { "log-dhcp", 0, 0, LOPT_LOG_OPTS }, |
| 190 | { "log-async", 2, 0, LOPT_MAX_LOGS }, |
| 191 | { "dhcp-circuitid", 1, 0, LOPT_CIRCUIT }, |
| 192 | { "dhcp-remoteid", 1, 0, LOPT_REMOTE }, |
| 193 | { "dhcp-subscrid", 1, 0, LOPT_SUBSCR }, |
| 194 | { "interface-name", 1, 0, LOPT_INTNAME }, |
| 195 | { "dhcp-hostsfile", 1, 0, LOPT_DHCP_HOST }, |
| 196 | { "dhcp-optsfile", 1, 0, LOPT_DHCP_OPTS }, |
| 197 | { "dhcp-no-override", 0, 0, LOPT_OVERRIDE }, |
| 198 | { "tftp-port-range", 1, 0, LOPT_TFTPPORTS }, |
| 199 | { "stop-dns-rebind", 0, 0, LOPT_REBIND }, |
| 200 | { "all-servers", 0, 0, LOPT_NOLAST }, |
| 201 | { "dhcp-match", 1, 0, LOPT_MATCH }, |
| 202 | { "dhcp-broadcast", 1, 0, LOPT_BROADCAST }, |
| 203 | { "neg-ttl", 1, 0, LOPT_NEGTTL }, |
| 204 | { "dhcp-alternate-port", 2, 0, LOPT_ALTPORT }, |
| 205 | { "dhcp-scriptuser", 1, 0, LOPT_SCRIPTUSR }, |
| 206 | { "min-port", 1, 0, LOPT_MINPORT }, |
| 207 | { "dhcp-fqdn", 0, 0, LOPT_DHCP_FQDN }, |
| 208 | { "cname", 1, 0, LOPT_CNAME }, |
| 209 | { "pxe-prompt", 1, 0, LOPT_PXE_PROMT }, |
| 210 | { "pxe-service", 1, 0, LOPT_PXE_SERV }, |
| 211 | { "test", 0, 0, LOPT_TEST }, |
| 212 | { NULL, 0, 0, 0 } |
| 213 | }; |
| 214 | |
| 215 | /* These must have more the one '1' bit */ |
| 216 | #define ARG_DUP 3 |
| 217 | #define ARG_ONE 5 |
| 218 | #define ARG_USED_CL 7 |
| 219 | #define ARG_USED_FILE 9 |
| 220 | |
| 221 | static struct { |
| 222 | int opt; |
| 223 | unsigned int rept; |
| 224 | char * const flagdesc; |
| 225 | char * const desc; |
| 226 | char * const arg; |
| 227 | } usage[] = { |
| 228 | { 'a', ARG_DUP, "ipaddr", gettext_noop("Specify local address(es) to listen on."), NULL }, |
| 229 | { 'A', ARG_DUP, "/domain/ipaddr", gettext_noop("Return ipaddr for all hosts in specified domains."), NULL }, |
| 230 | { 'b', OPT_BOGUSPRIV, NULL, gettext_noop("Fake reverse lookups for RFC1918 private address ranges."), NULL }, |
| 231 | { 'B', ARG_DUP, "ipaddr", gettext_noop("Treat ipaddr as NXDOMAIN (defeats Verisign wildcard)."), NULL }, |
| 232 | { 'c', ARG_ONE, "cachesize", gettext_noop("Specify the size of the cache in entries (defaults to %s)."), "$" }, |
| 233 | { 'C', ARG_DUP, "path", gettext_noop("Specify configuration file (defaults to %s)."), CONFFILE }, |
| 234 | { 'd', OPT_DEBUG, NULL, gettext_noop("Do NOT fork into the background: run in debug mode."), NULL }, |
| 235 | { 'D', OPT_NODOTS_LOCAL, NULL, gettext_noop("Do NOT forward queries with no domain part."), NULL }, |
| 236 | { 'e', OPT_SELFMX, NULL, gettext_noop("Return self-pointing MX records for local hosts."), NULL }, |
| 237 | { 'E', OPT_EXPAND, NULL, gettext_noop("Expand simple names in /etc/hosts with domain-suffix."), NULL }, |
| 238 | { 'f', OPT_FILTER, NULL, gettext_noop("Don't forward spurious DNS requests from Windows hosts."), NULL }, |
| 239 | { 'F', ARG_DUP, "ipaddr,ipaddr,time", gettext_noop("Enable DHCP in the range given with lease duration."), NULL }, |
| 240 | { 'g', ARG_ONE, "groupname", gettext_noop("Change to this group after startup (defaults to %s)."), CHGRP }, |
| 241 | { 'G', ARG_DUP, "<hostspec>", gettext_noop("Set address or hostname for a specified machine."), NULL }, |
| 242 | { LOPT_DHCP_HOST, ARG_ONE, "<filename>", gettext_noop("Read DHCP host specs from file"), NULL }, |
| 243 | { LOPT_DHCP_OPTS, ARG_ONE, "<filename>", gettext_noop("Read DHCP option specs from file"), NULL }, |
| 244 | { 'h', OPT_NO_HOSTS, NULL, gettext_noop("Do NOT load %s file."), HOSTSFILE }, |
| 245 | { 'H', ARG_DUP, "path", gettext_noop("Specify a hosts file to be read in addition to %s."), HOSTSFILE }, |
| 246 | { 'i', ARG_DUP, "interface", gettext_noop("Specify interface(s) to listen on."), NULL }, |
| 247 | { 'I', ARG_DUP, "int", gettext_noop("Specify interface(s) NOT to listen on.") , NULL }, |
| 248 | { 'j', ARG_DUP, "<tag>,<class>", gettext_noop("Map DHCP user class to tag."), NULL }, |
| 249 | { LOPT_CIRCUIT, ARG_DUP, "<tag>,<circuit>", gettext_noop("Map RFC3046 circuit-id to tag."), NULL }, |
| 250 | { LOPT_REMOTE, ARG_DUP, "<tag>,<remote>", gettext_noop("Map RFC3046 remote-id to tag."), NULL }, |
| 251 | { LOPT_SUBSCR, ARG_DUP, "<tag>,<remote>", gettext_noop("Map RFC3993 subscriber-id to tag."), NULL }, |
| 252 | { 'J', ARG_DUP, "=<id>[,<id>]", gettext_noop("Don't do DHCP for hosts with tag set."), NULL }, |
| 253 | { LOPT_BROADCAST, ARG_DUP, "=<id>[,<id>]", gettext_noop("Force broadcast replies for hosts with tag set."), NULL }, |
| 254 | { 'k', OPT_NO_FORK, NULL, gettext_noop("Do NOT fork into the background, do NOT run in debug mode."), NULL }, |
| 255 | { 'K', OPT_AUTHORITATIVE, NULL, gettext_noop("Assume we are the only DHCP server on the local network."), NULL }, |
| 256 | { 'l', ARG_ONE, "path", gettext_noop("Specify where to store DHCP leases (defaults to %s)."), LEASEFILE }, |
| 257 | { 'L', OPT_LOCALMX, NULL, gettext_noop("Return MX records for local hosts."), NULL }, |
| 258 | { 'm', ARG_DUP, "host_name,target,pref", gettext_noop("Specify an MX record."), NULL }, |
| 259 | { 'M', ARG_DUP, "<bootp opts>", gettext_noop("Specify BOOTP options to DHCP server."), NULL }, |
| 260 | { 'n', OPT_NO_POLL, NULL, gettext_noop("Do NOT poll %s file, reload only on SIGHUP."), RESOLVFILE }, |
| 261 | { 'N', OPT_NO_NEG, NULL, gettext_noop("Do NOT cache failed search results."), NULL }, |
| 262 | { 'o', OPT_ORDER, NULL, gettext_noop("Use nameservers strictly in the order given in %s."), RESOLVFILE }, |
| 263 | { 'O', ARG_DUP, "<optspec>", gettext_noop("Specify options to be sent to DHCP clients."), NULL }, |
| 264 | { LOPT_FORCE, ARG_DUP, "<optspec>", gettext_noop("DHCP option sent even if the client does not request it."), NULL}, |
| 265 | { 'p', ARG_ONE, "number", gettext_noop("Specify port to listen for DNS requests on (defaults to 53)."), NULL }, |
| 266 | { 'P', ARG_ONE, "<size>", gettext_noop("Maximum supported UDP packet size for EDNS.0 (defaults to %s)."), "*" }, |
| 267 | { 'q', OPT_LOG, NULL, gettext_noop("Log DNS queries."), NULL }, |
| 268 | { 'Q', ARG_ONE, "number", gettext_noop("Force the originating port for upstream DNS queries."), NULL }, |
| 269 | { 'R', OPT_NO_RESOLV, NULL, gettext_noop("Do NOT read resolv.conf."), NULL }, |
| 270 | { 'r', ARG_DUP, "path", gettext_noop("Specify path to resolv.conf (defaults to %s)."), RESOLVFILE }, |
| 271 | { 'S', ARG_DUP, "/domain/ipaddr", gettext_noop("Specify address(es) of upstream servers with optional domains."), NULL }, |
| 272 | { LOPT_LOCAL, ARG_DUP, "/domain/", gettext_noop("Never forward queries to specified domains."), NULL }, |
| 273 | { 's', ARG_DUP, "<domain>[,<range>]", gettext_noop("Specify the domain to be assigned in DHCP leases."), NULL }, |
| 274 | { 't', ARG_ONE, "host_name", gettext_noop("Specify default target in an MX record."), NULL }, |
| 275 | { 'T', ARG_ONE, "time", gettext_noop("Specify time-to-live in seconds for replies from /etc/hosts."), NULL }, |
| 276 | { LOPT_NEGTTL, ARG_ONE, "time", gettext_noop("Specify time-to-live in seconds for negative caching."), NULL }, |
| 277 | { 'u', ARG_ONE, "username", gettext_noop("Change to this user after startup. (defaults to %s)."), CHUSER }, |
| 278 | { 'U', ARG_DUP, "<id>,<class>", gettext_noop("Map DHCP vendor class to tag."), NULL }, |
| 279 | { 'v', 0, NULL, gettext_noop("Display dnsmasq version and copyright information."), NULL }, |
| 280 | { 'V', ARG_DUP, "addr,addr,mask", gettext_noop("Translate IPv4 addresses from upstream servers."), NULL }, |
| 281 | { 'W', ARG_DUP, "name,target,...", gettext_noop("Specify a SRV record."), NULL }, |
| 282 | { 'w', 0, NULL, gettext_noop("Display this message. Use --help dhcp for known DHCP options."), NULL }, |
| 283 | { 'x', ARG_ONE, "path", gettext_noop("Specify path of PID file (defaults to %s)."), RUNFILE }, |
| 284 | { 'X', ARG_ONE, "number", gettext_noop("Specify maximum number of DHCP leases (defaults to %s)."), "&" }, |
| 285 | { 'y', OPT_LOCALISE, NULL, gettext_noop("Answer DNS queries based on the interface a query was sent to."), NULL }, |
| 286 | { 'Y', ARG_DUP, "name,txt....", gettext_noop("Specify TXT DNS record."), NULL }, |
| 287 | { LOPT_PTR, ARG_DUP, "name,target", gettext_noop("Specify PTR DNS record."), NULL }, |
| 288 | { LOPT_INTNAME, ARG_DUP, "name,interface", gettext_noop("Give DNS name to IPv4 address of interface."), NULL }, |
| 289 | { 'z', OPT_NOWILD, NULL, gettext_noop("Bind only to interfaces in use."), NULL }, |
| 290 | { 'Z', OPT_ETHERS, NULL, gettext_noop("Read DHCP static host information from %s."), ETHERSFILE }, |
| 291 | { '1', OPT_DBUS, NULL, gettext_noop("Enable the DBus interface for setting upstream servers, etc."), NULL }, |
| 292 | { '2', ARG_DUP, "interface", gettext_noop("Do not provide DHCP on this interface, only provide DNS."), NULL }, |
| 293 | { '3', ARG_DUP, "[=<id>[,<id>]]", gettext_noop("Enable dynamic address allocation for bootp."), NULL }, |
| 294 | { '4', ARG_DUP, "<id>,<mac address>", gettext_noop("Map MAC address (with wildcards) to option set."), NULL }, |
| 295 | { LOPT_BRIDGE, ARG_DUP, "iface,alias,..", gettext_noop("Treat DHCP requests on aliases as arriving from interface."), NULL }, |
| 296 | { '5', OPT_NO_PING, NULL, gettext_noop("Disable ICMP echo address checking in the DHCP server."), NULL }, |
| 297 | { '6', ARG_ONE, "path", gettext_noop("Script to run on DHCP lease creation and destruction."), NULL }, |
| 298 | { '7', ARG_DUP, "path", gettext_noop("Read configuration from all the files in this directory."), NULL }, |
| 299 | { '8', ARG_ONE, "<facilty>|<file>", gettext_noop("Log to this syslog facility or file. (defaults to DAEMON)"), NULL }, |
| 300 | { '9', OPT_LEASE_RO, NULL, gettext_noop("Do not use leasefile."), NULL }, |
| 301 | { '0', ARG_ONE, "<queries>", gettext_noop("Maximum number of concurrent DNS queries. (defaults to %s)"), "!" }, |
| 302 | { LOPT_RELOAD, OPT_RELOAD, NULL, gettext_noop("Clear DNS cache when reloading %s."), RESOLVFILE }, |
| 303 | { LOPT_NO_NAMES, ARG_DUP, "[=<id>[,<id>]]", gettext_noop("Ignore hostnames provided by DHCP clients."), NULL }, |
| 304 | { LOPT_OVERRIDE, OPT_NO_OVERRIDE, NULL, gettext_noop("Do NOT reuse filename and server fields for extra DHCP options."), NULL }, |
| 305 | { LOPT_TFTP, OPT_TFTP, NULL, gettext_noop("Enable integrated read-only TFTP server."), NULL }, |
| 306 | { LOPT_PREFIX, ARG_ONE, "<directory>", gettext_noop("Export files by TFTP only from the specified subtree."), NULL }, |
| 307 | { LOPT_APREF, OPT_TFTP_APREF, NULL, gettext_noop("Add client IP address to tftp-root."), NULL }, |
| 308 | { LOPT_SECURE, OPT_TFTP_SECURE, NULL, gettext_noop("Allow access only to files owned by the user running dnsmasq."), NULL }, |
| 309 | { LOPT_TFTP_MAX, ARG_ONE, "<connections>", gettext_noop("Maximum number of conncurrent TFTP transfers (defaults to %s)."), "#" }, |
| 310 | { LOPT_NOBLOCK, OPT_TFTP_NOBLOCK, NULL, gettext_noop("Disable the TFTP blocksize extension."), NULL }, |
| 311 | { LOPT_TFTPPORTS, ARG_ONE, "<start>,<end>", gettext_noop("Ephemeral port range for use by TFTP transfers."), NULL }, |
| 312 | { LOPT_LOG_OPTS, OPT_LOG_OPTS, NULL, gettext_noop("Extra logging for DHCP."), NULL }, |
| 313 | { LOPT_MAX_LOGS, ARG_ONE, "[=<log lines>]", gettext_noop("Enable async. logging; optionally set queue length."), NULL }, |
| 314 | { LOPT_REBIND, OPT_NO_REBIND, NULL, gettext_noop("Stop DNS rebinding. Filter private IP ranges when resolving."), NULL }, |
| 315 | { LOPT_NOLAST, OPT_ALL_SERVERS, NULL, gettext_noop("Always perform DNS queries to all servers."), NULL }, |
| 316 | { LOPT_MATCH, ARG_DUP, "<netid>,<optspec>", gettext_noop("Set tag if client includes matching option in request."), NULL }, |
| 317 | { LOPT_ALTPORT, ARG_ONE, "[=<ports>]", gettext_noop("Use alternative ports for DHCP."), NULL }, |
| 318 | { LOPT_SCRIPTUSR, ARG_ONE, "<username>", gettext_noop("Run lease-change script as this user."), NULL }, |
| 319 | { LOPT_NAPTR, ARG_DUP, "<name>,<naptr>", gettext_noop("Specify NAPTR DNS record."), NULL }, |
| 320 | { LOPT_MINPORT, ARG_ONE, "<port>", gettext_noop("Specify lowest port available for DNS query transmission."), NULL }, |
| 321 | { LOPT_DHCP_FQDN, OPT_DHCP_FQDN, NULL, gettext_noop("Use only fully qualified domain names for DHCP clients."), NULL }, |
| 322 | { LOPT_CNAME, ARG_DUP, "<alias>,<target>", gettext_noop("Specify alias name for LOCAL DNS name."), NULL }, |
| 323 | { LOPT_PXE_PROMT, ARG_DUP, "<prompt>,[<timeout>]", gettext_noop("Prompt to send to PXE clients."), NULL }, |
| 324 | { LOPT_PXE_SERV, ARG_DUP, "<service>", gettext_noop("Boot service for PXE menu."), NULL }, |
| 325 | { LOPT_TEST, 0, NULL, gettext_noop("Check configuration syntax."), NULL }, |
| 326 | { 0, 0, NULL, NULL, NULL } |
| 327 | }; |
| 328 | |
| 329 | #ifdef HAVE_DHCP |
| 330 | /* makes options which take a list of addresses */ |
| 331 | #define OT_ADDR_LIST 0x80 |
| 332 | /* DHCP-internal options, for logging. not valid in config file */ |
| 333 | #define OT_INTERNAL 0x40 |
| 334 | #define OT_NAME 0x20 |
| 335 | |
| 336 | static const struct { |
| 337 | char *name; |
| 338 | unsigned char val, size; |
| 339 | } opttab[] = { |
| 340 | { "netmask", 1, OT_ADDR_LIST }, |
| 341 | { "time-offset", 2, 4 }, |
| 342 | { "router", 3, OT_ADDR_LIST }, |
| 343 | { "dns-server", 6, OT_ADDR_LIST }, |
| 344 | { "log-server", 7, OT_ADDR_LIST }, |
| 345 | { "lpr-server", 9, OT_ADDR_LIST }, |
| 346 | { "hostname", 12, OT_INTERNAL | OT_NAME }, |
| 347 | { "boot-file-size", 13, 2 }, |
| 348 | { "domain-name", 15, OT_NAME }, |
| 349 | { "swap-server", 16, OT_ADDR_LIST }, |
| 350 | { "root-path", 17, 0 }, |
| 351 | { "extension-path", 18, 0 }, |
| 352 | { "ip-forward-enable", 19, 1 }, |
| 353 | { "non-local-source-routing", 20, 1 }, |
| 354 | { "policy-filter", 21, OT_ADDR_LIST }, |
| 355 | { "max-datagram-reassembly", 22, 2 }, |
| 356 | { "default-ttl", 23, 1 }, |
| 357 | { "mtu", 26, 2 }, |
| 358 | { "all-subnets-local", 27, 1 }, |
| 359 | { "broadcast", 28, OT_INTERNAL | OT_ADDR_LIST }, |
| 360 | { "router-discovery", 31, 1 }, |
| 361 | { "router-solicitation", 32, OT_ADDR_LIST }, |
| 362 | { "static-route", 33, OT_ADDR_LIST }, |
| 363 | { "trailer-encapsulation", 34, 1 }, |
| 364 | { "arp-timeout", 35, 4 }, |
| 365 | { "ethernet-encap", 36, 1 }, |
| 366 | { "tcp-ttl", 37, 1 }, |
| 367 | { "tcp-keepalive", 38, 4 }, |
| 368 | { "nis-domain", 40, 0 }, |
| 369 | { "nis-server", 41, OT_ADDR_LIST }, |
| 370 | { "ntp-server", 42, OT_ADDR_LIST }, |
| 371 | { "vendor-encap", 43, OT_INTERNAL }, |
| 372 | { "netbios-ns", 44, OT_ADDR_LIST }, |
| 373 | { "netbios-dd", 45, OT_ADDR_LIST }, |
| 374 | { "netbios-nodetype", 46, 1 }, |
| 375 | { "netbios-scope", 47, 0 }, |
| 376 | { "x-windows-fs", 48, OT_ADDR_LIST }, |
| 377 | { "x-windows-dm", 49, OT_ADDR_LIST }, |
| 378 | { "requested-address", 50, OT_INTERNAL | OT_ADDR_LIST }, |
| 379 | { "lease-time", 51, OT_INTERNAL }, |
| 380 | { "option-overload", 52, OT_INTERNAL }, |
| 381 | { "message-type", 53, OT_INTERNAL, }, |
| 382 | { "server-identifier", 54, OT_INTERNAL | OT_ADDR_LIST }, |
| 383 | { "parameter-request", 55, OT_INTERNAL }, |
| 384 | { "message", 56, OT_INTERNAL }, |
| 385 | { "max-message-size", 57, OT_INTERNAL }, |
| 386 | { "T1", 58, OT_INTERNAL }, |
| 387 | { "T2", 59, OT_INTERNAL }, |
| 388 | { "vendor-class", 60, 0 }, |
| 389 | { "client-id", 61,OT_INTERNAL }, |
| 390 | { "nis+-domain", 64, 0 }, |
| 391 | { "nis+-server", 65, OT_ADDR_LIST }, |
| 392 | { "tftp-server", 66, 0 }, |
| 393 | { "bootfile-name", 67, 0 }, |
| 394 | { "mobile-ip-home", 68, OT_ADDR_LIST }, |
| 395 | { "smtp-server", 69, OT_ADDR_LIST }, |
| 396 | { "pop3-server", 70, OT_ADDR_LIST }, |
| 397 | { "nntp-server", 71, OT_ADDR_LIST }, |
| 398 | { "irc-server", 74, OT_ADDR_LIST }, |
| 399 | { "user-class", 77, 0 }, |
| 400 | { "FQDN", 81, OT_INTERNAL }, |
| 401 | { "agent-id", 82, OT_INTERNAL }, |
| 402 | { "client-arch", 93, 2 }, |
| 403 | { "client-interface-id", 94, 0 }, |
| 404 | { "client-machine-id", 97, 0 }, |
| 405 | { "subnet-select", 118, OT_INTERNAL }, |
| 406 | { "domain-search", 119, 0 }, |
| 407 | { "sip-server", 120, 0 }, |
| 408 | { "classless-static-route", 121, 0 }, |
| 409 | { "server-ip-address", 255, OT_ADDR_LIST }, /* special, internal only, sets siaddr */ |
| 410 | { NULL, 0, 0 } |
| 411 | }; |
| 412 | |
| 413 | char *option_string(unsigned char opt, int *is_ip, int *is_name) |
| 414 | { |
| 415 | int i; |
| 416 | |
| 417 | for (i = 0; opttab[i].name; i++) |
| 418 | if (opttab[i].val == opt) |
| 419 | { |
| 420 | if (is_ip) |
| 421 | *is_ip = !!(opttab[i].size & OT_ADDR_LIST); |
| 422 | if (is_name) |
| 423 | *is_name = !!(opttab[i].size & OT_NAME); |
| 424 | return opttab[i].name; |
| 425 | } |
| 426 | |
| 427 | return NULL; |
| 428 | } |
| 429 | |
| 430 | #endif |
| 431 | |
| 432 | /* We hide metacharaters in quoted strings by mapping them into the ASCII control |
| 433 | character space. Note that the \0, \t \b \r \033 and \n characters are carefully placed in the |
| 434 | following sequence so that they map to themselves: it is therefore possible to call |
| 435 | unhide_metas repeatedly on string without breaking things. |
| 436 | The transformation gets undone by opt_canonicalise, atoi_check and opt_string_alloc, and a |
| 437 | couple of other places. |
| 438 | Note that space is included here so that |
| 439 | --dhcp-option=3, string |
| 440 | has five characters, whilst |
| 441 | --dhcp-option=3," string" |
| 442 | has six. |
| 443 | */ |
| 444 | |
| 445 | static const char meta[] = "\000123456 \b\t\n78\r90abcdefABCDE\033F:,."; |
| 446 | |
| 447 | static char hide_meta(char c) |
| 448 | { |
| 449 | unsigned int i; |
| 450 | |
| 451 | for (i = 0; i < (sizeof(meta) - 1); i++) |
| 452 | if (c == meta[i]) |
| 453 | return (char)i; |
| 454 | |
| 455 | return c; |
| 456 | } |
| 457 | |
| 458 | static char unhide_meta(char cr) |
| 459 | { |
| 460 | unsigned int c = cr; |
| 461 | |
| 462 | if (c < (sizeof(meta) - 1)) |
| 463 | cr = meta[c]; |
| 464 | |
| 465 | return cr; |
| 466 | } |
| 467 | |
| 468 | static void unhide_metas(char *cp) |
| 469 | { |
| 470 | if (cp) |
| 471 | for(; *cp; cp++) |
| 472 | *cp = unhide_meta(*cp); |
| 473 | } |
| 474 | |
| 475 | static void *opt_malloc(size_t size) |
| 476 | { |
| 477 | void *ret; |
| 478 | |
| 479 | if (mem_recover) |
| 480 | { |
| 481 | ret = whine_malloc(size); |
| 482 | if (!ret) |
| 483 | longjmp(mem_jmp, 1); |
| 484 | } |
| 485 | else |
| 486 | ret = safe_malloc(size); |
| 487 | |
| 488 | return ret; |
| 489 | } |
| 490 | |
| 491 | static char *opt_string_alloc(char *cp) |
| 492 | { |
| 493 | char *ret = NULL; |
| 494 | |
| 495 | if (cp && strlen(cp) != 0) |
| 496 | { |
| 497 | ret = opt_malloc(strlen(cp)+1); |
| 498 | strcpy(ret, cp); |
| 499 | |
| 500 | /* restore hidden metachars */ |
| 501 | unhide_metas(ret); |
| 502 | } |
| 503 | |
| 504 | return ret; |
| 505 | } |
| 506 | |
| 507 | |
| 508 | /* find next comma, split string with zero and eliminate spaces. |
| 509 | return start of string following comma */ |
| 510 | |
| 511 | static char *split_chr(char *s, char c) |
| 512 | { |
| 513 | char *comma, *p; |
| 514 | |
| 515 | if (!s || !(comma = strchr(s, c))) |
| 516 | return NULL; |
| 517 | |
| 518 | p = comma; |
| 519 | *comma = ' '; |
| 520 | |
| 521 | for (; isspace((int)*comma); comma++); |
| 522 | |
| 523 | for (; (p >= s) && isspace((int)*p); p--) |
| 524 | *p = 0; |
| 525 | |
| 526 | return comma; |
| 527 | } |
| 528 | |
| 529 | static char *split(char *s) |
| 530 | { |
| 531 | return split_chr(s, ','); |
| 532 | } |
| 533 | |
| 534 | static char *canonicalise_opt(char *s) |
| 535 | { |
| 536 | char *ret; |
| 537 | int nomem; |
| 538 | |
| 539 | if (!s) |
| 540 | return 0; |
| 541 | |
| 542 | unhide_metas(s); |
| 543 | if (!(ret = canonicalise(s, &nomem)) && nomem) |
| 544 | { |
| 545 | if (mem_recover) |
| 546 | longjmp(mem_jmp, 1); |
| 547 | else |
| 548 | die(_("could not get memory"), NULL, EC_NOMEM); |
| 549 | } |
| 550 | |
| 551 | return ret; |
| 552 | } |
| 553 | |
| 554 | static int atoi_check(char *a, int *res) |
| 555 | { |
| 556 | char *p; |
| 557 | |
| 558 | if (!a) |
| 559 | return 0; |
| 560 | |
| 561 | unhide_metas(a); |
| 562 | |
| 563 | for (p = a; *p; p++) |
| 564 | if (*p < '0' || *p > '9') |
| 565 | return 0; |
| 566 | |
| 567 | *res = atoi(a); |
| 568 | return 1; |
| 569 | } |
| 570 | |
| 571 | static int atoi_check16(char *a, int *res) |
| 572 | { |
| 573 | if (!(atoi_check(a, res)) || |
| 574 | *res < 0 || |
| 575 | *res > 0xffff) |
| 576 | return 0; |
| 577 | |
| 578 | return 1; |
| 579 | } |
| 580 | |
| 581 | static void add_txt(char *name, char *txt) |
| 582 | { |
| 583 | size_t len = strlen(txt); |
| 584 | struct txt_record *r = opt_malloc(sizeof(struct txt_record)); |
| 585 | |
| 586 | r->name = opt_string_alloc(name); |
| 587 | r->next = daemon->txt; |
| 588 | daemon->txt = r; |
| 589 | r->class = C_CHAOS; |
| 590 | r->txt = opt_malloc(len+1); |
| 591 | r->len = len+1; |
| 592 | *(r->txt) = len; |
| 593 | memcpy((r->txt)+1, txt, len); |
| 594 | } |
| 595 | |
| 596 | static void do_usage(void) |
| 597 | { |
| 598 | char buff[100]; |
| 599 | int i, j; |
| 600 | |
| 601 | struct { |
| 602 | char handle; |
| 603 | int val; |
| 604 | } tab[] = { |
| 605 | { '$', CACHESIZ }, |
| 606 | { '*', EDNS_PKTSZ }, |
| 607 | { '&', MAXLEASES }, |
| 608 | { '!', FTABSIZ }, |
| 609 | { '#', TFTP_MAX_CONNECTIONS }, |
| 610 | { '\0', 0 } |
| 611 | }; |
| 612 | |
| 613 | printf(_("Usage: dnsmasq [options]\n\n")); |
| 614 | #ifndef HAVE_GETOPT_LONG |
| 615 | printf(_("Use short options only on the command line.\n")); |
| 616 | #endif |
| 617 | printf(_("Valid options are:\n")); |
| 618 | |
| 619 | for (i = 0; usage[i].opt != 0; i++) |
| 620 | { |
| 621 | char *desc = usage[i].flagdesc; |
| 622 | char *eq = "="; |
| 623 | |
| 624 | if (!desc || *desc == '[') |
| 625 | eq = ""; |
| 626 | |
| 627 | if (!desc) |
| 628 | desc = ""; |
| 629 | |
| 630 | for ( j = 0; opts[j].name; j++) |
| 631 | if (opts[j].val == usage[i].opt) |
| 632 | break; |
| 633 | if (usage[i].opt < 256) |
| 634 | sprintf(buff, "-%c, ", usage[i].opt); |
| 635 | else |
| 636 | sprintf(buff, " "); |
| 637 | |
| 638 | sprintf(buff+4, "--%s%s%s", opts[j].name, eq, desc); |
| 639 | printf("%-36.36s", buff); |
| 640 | |
| 641 | if (usage[i].arg) |
| 642 | { |
| 643 | strcpy(buff, usage[i].arg); |
| 644 | for (j = 0; tab[j].handle; j++) |
| 645 | if (tab[j].handle == *(usage[i].arg)) |
| 646 | sprintf(buff, "%d", tab[j].val); |
| 647 | } |
| 648 | printf(_(usage[i].desc), buff); |
| 649 | printf("\n"); |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | #ifdef HAVE_DHCP |
| 654 | static void display_opts(void) |
| 655 | { |
| 656 | int i; |
| 657 | |
| 658 | printf(_("Known DHCP options:\n")); |
| 659 | |
| 660 | for (i = 0; opttab[i].name; i++) |
| 661 | if (!(opttab[i].size & OT_INTERNAL)) |
| 662 | printf("%3d %s\n", opttab[i].val, opttab[i].name); |
| 663 | } |
| 664 | |
| 665 | /* This is too insanely large to keep in-line in the switch */ |
| 666 | static char *parse_dhcp_opt(char *arg, int flags) |
| 667 | { |
| 668 | struct dhcp_opt *new = opt_malloc(sizeof(struct dhcp_opt)); |
| 669 | char lenchar = 0, *cp; |
| 670 | int i, addrs, digs, is_addr, is_hex, is_dec, is_string, dots; |
| 671 | char *comma = NULL, *problem = NULL; |
| 672 | struct dhcp_netid *np = NULL; |
| 673 | unsigned char opt_len = 0; |
| 674 | |
| 675 | new->len = 0; |
| 676 | new->flags = flags; |
| 677 | new->netid = NULL; |
| 678 | new->val = NULL; |
| 679 | new->opt = 0; |
| 680 | |
| 681 | while (arg) |
| 682 | { |
| 683 | comma = split(arg); |
| 684 | |
| 685 | for (cp = arg; *cp; cp++) |
| 686 | if (*cp < '0' || *cp > '9') |
| 687 | break; |
| 688 | |
| 689 | if (!*cp) |
| 690 | { |
| 691 | new->opt = atoi(arg); |
| 692 | opt_len = 0; |
| 693 | break; |
| 694 | } |
| 695 | |
| 696 | if (strstr(arg, "option:") == arg) |
| 697 | { |
| 698 | for (i = 0; opttab[i].name; i++) |
| 699 | if (!(opttab[i].size & OT_INTERNAL) && |
| 700 | strcasecmp(opttab[i].name, arg+7) == 0) |
| 701 | { |
| 702 | new->opt = opttab[i].val; |
| 703 | opt_len = opttab[i].size; |
| 704 | break; |
| 705 | } |
| 706 | /* option:<optname> must follow tag and vendor string. */ |
| 707 | break; |
| 708 | } |
| 709 | else if (strstr(arg, "vendor:") == arg) |
| 710 | { |
| 711 | new->u.vendor_class = (unsigned char *)opt_string_alloc(arg+7); |
| 712 | new->flags |= DHOPT_VENDOR; |
| 713 | } |
| 714 | else if (strstr(arg, "encap:") == arg) |
| 715 | { |
| 716 | new->u.encap = atoi(arg+6); |
| 717 | new->flags |= DHOPT_ENCAPSULATE; |
| 718 | } |
| 719 | else |
| 720 | { |
| 721 | new->netid = opt_malloc(sizeof (struct dhcp_netid)); |
| 722 | /* allow optional "net:" for consistency */ |
| 723 | if (strstr(arg, "net:") == arg) |
| 724 | new->netid->net = opt_string_alloc(arg+4); |
| 725 | else |
| 726 | new->netid->net = opt_string_alloc(arg); |
| 727 | new->netid->next = np; |
| 728 | np = new->netid; |
| 729 | } |
| 730 | |
| 731 | arg = comma; |
| 732 | } |
| 733 | |
| 734 | if (new->opt == 0) |
| 735 | problem = _("bad dhcp-option"); |
| 736 | else if (comma) |
| 737 | { |
| 738 | /* characterise the value */ |
| 739 | char c; |
| 740 | is_addr = is_hex = is_dec = is_string = 1; |
| 741 | addrs = digs = 1; |
| 742 | dots = 0; |
| 743 | for (cp = comma; (c = *cp); cp++) |
| 744 | if (c == ',') |
| 745 | { |
| 746 | addrs++; |
| 747 | is_dec = is_hex = 0; |
| 748 | } |
| 749 | else if (c == ':') |
| 750 | { |
| 751 | digs++; |
| 752 | is_dec = is_addr = 0; |
| 753 | } |
| 754 | else if (c == '/') |
| 755 | { |
| 756 | is_dec = is_hex = 0; |
| 757 | if (cp == comma) /* leading / means a pathname */ |
| 758 | is_addr = 0; |
| 759 | } |
| 760 | else if (c == '.') |
| 761 | { |
| 762 | is_dec = is_hex = 0; |
| 763 | dots++; |
| 764 | } |
| 765 | else if (c == '-') |
| 766 | is_hex = is_addr = 0; |
| 767 | else if (c == ' ') |
| 768 | is_dec = is_hex = 0; |
| 769 | else if (!(c >='0' && c <= '9')) |
| 770 | { |
| 771 | is_addr = 0; |
| 772 | if (cp[1] == 0 && is_dec && |
| 773 | (c == 'b' || c == 's' || c == 'i')) |
| 774 | { |
| 775 | lenchar = c; |
| 776 | *cp = 0; |
| 777 | } |
| 778 | else |
| 779 | is_dec = 0; |
| 780 | if (!((c >='A' && c <= 'F') || |
| 781 | (c >='a' && c <= 'f') || |
| 782 | (c == '*' && (flags & DHOPT_MATCH)))) |
| 783 | is_hex = 0; |
| 784 | } |
| 785 | |
| 786 | /* We know that some options take addresses */ |
| 787 | |
| 788 | if (opt_len & OT_ADDR_LIST) |
| 789 | { |
| 790 | is_string = is_dec = is_hex = 0; |
| 791 | if (!is_addr || dots == 0) |
| 792 | problem = _("bad IP address"); |
| 793 | } |
| 794 | |
| 795 | if (is_hex && digs > 1) |
| 796 | { |
| 797 | new->len = digs; |
| 798 | new->val = opt_malloc(new->len); |
| 799 | parse_hex(comma, new->val, digs, (flags & DHOPT_MATCH) ? &new->u.wildcard_mask : NULL, NULL); |
| 800 | new->flags |= DHOPT_HEX; |
| 801 | } |
| 802 | else if (is_dec) |
| 803 | { |
| 804 | int i, val = atoi(comma); |
| 805 | /* assume numeric arg is 1 byte except for |
| 806 | options where it is known otherwise. |
| 807 | For vendor class option, we have to hack. */ |
| 808 | if (opt_len != 0) |
| 809 | new->len = opt_len; |
| 810 | else if (val & 0xffff0000) |
| 811 | new->len = 4; |
| 812 | else if (val & 0xff00) |
| 813 | new->len = 2; |
| 814 | else |
| 815 | new->len = 1; |
| 816 | |
| 817 | if (lenchar == 'b') |
| 818 | new->len = 1; |
| 819 | else if (lenchar == 's') |
| 820 | new->len = 2; |
| 821 | else if (lenchar == 'i') |
| 822 | new->len = 4; |
| 823 | |
| 824 | new->val = opt_malloc(new->len); |
| 825 | for (i=0; i<new->len; i++) |
| 826 | new->val[i] = val>>((new->len - i - 1)*8); |
| 827 | } |
| 828 | else if (is_addr) |
| 829 | { |
| 830 | struct in_addr in; |
| 831 | unsigned char *op; |
| 832 | char *slash; |
| 833 | /* max length of address/subnet descriptor is five bytes, |
| 834 | add one for the option 120 enc byte too */ |
| 835 | new->val = op = opt_malloc((5 * addrs) + 1); |
| 836 | new->flags |= DHOPT_ADDR; |
| 837 | |
| 838 | if (!(new->flags & DHOPT_ENCAPSULATE) && new->opt == 120) |
| 839 | { |
| 840 | *(op++) = 1; /* RFC 3361 "enc byte" */ |
| 841 | new->flags &= ~DHOPT_ADDR; |
| 842 | } |
| 843 | while (addrs--) |
| 844 | { |
| 845 | cp = comma; |
| 846 | comma = split(cp); |
| 847 | slash = split_chr(cp, '/'); |
| 848 | in.s_addr = inet_addr(cp); |
| 849 | if (!slash) |
| 850 | { |
| 851 | memcpy(op, &in, INADDRSZ); |
| 852 | op += INADDRSZ; |
| 853 | } |
| 854 | else |
| 855 | { |
| 856 | unsigned char *p = (unsigned char *)∈ |
| 857 | int netsize = atoi(slash); |
| 858 | *op++ = netsize; |
| 859 | if (netsize > 0) |
| 860 | *op++ = *p++; |
| 861 | if (netsize > 8) |
| 862 | *op++ = *p++; |
| 863 | if (netsize > 16) |
| 864 | *op++ = *p++; |
| 865 | if (netsize > 24) |
| 866 | *op++ = *p++; |
| 867 | new->flags &= ~DHOPT_ADDR; /* cannot re-write descriptor format */ |
| 868 | } |
| 869 | } |
| 870 | new->len = op - new->val; |
| 871 | } |
| 872 | else if (is_string) |
| 873 | { |
| 874 | /* text arg */ |
| 875 | if ((new->opt == 119 || new->opt == 120) && !(new->flags & DHOPT_ENCAPSULATE)) |
| 876 | { |
| 877 | /* dns search, RFC 3397, or SIP, RFC 3361 */ |
| 878 | unsigned char *q, *r, *tail; |
| 879 | unsigned char *p, *m = NULL, *newp; |
| 880 | size_t newlen, len = 0; |
| 881 | int header_size = (new->opt == 119) ? 0 : 1; |
| 882 | |
| 883 | arg = comma; |
| 884 | comma = split(arg); |
| 885 | |
| 886 | while (arg && *arg) |
| 887 | { |
| 888 | char *dom; |
| 889 | if (!(dom = arg = canonicalise_opt(arg))) |
| 890 | { |
| 891 | problem = _("bad domain in dhcp-option"); |
| 892 | break; |
| 893 | } |
| 894 | |
| 895 | newp = opt_malloc(len + strlen(arg) + 2 + header_size); |
| 896 | if (m) |
| 897 | memcpy(newp, m, header_size + len); |
| 898 | m = newp; |
| 899 | p = m + header_size; |
| 900 | q = p + len; |
| 901 | |
| 902 | /* add string on the end in RFC1035 format */ |
| 903 | while (*arg) |
| 904 | { |
| 905 | unsigned char *cp = q++; |
| 906 | int j; |
| 907 | for (j = 0; *arg && (*arg != '.'); arg++, j++) |
| 908 | *q++ = *arg; |
| 909 | *cp = j; |
| 910 | if (*arg) |
| 911 | arg++; |
| 912 | } |
| 913 | *q++ = 0; |
| 914 | free(dom); |
| 915 | |
| 916 | /* Now tail-compress using earlier names. */ |
| 917 | newlen = q - p; |
| 918 | for (tail = p + len; *tail; tail += (*tail) + 1) |
| 919 | for (r = p; r - p < (int)len; r += (*r) + 1) |
| 920 | if (strcmp((char *)r, (char *)tail) == 0) |
| 921 | { |
| 922 | PUTSHORT((r - p) | 0xc000, tail); |
| 923 | newlen = tail - p; |
| 924 | goto end; |
| 925 | } |
| 926 | end: |
| 927 | len = newlen; |
| 928 | |
| 929 | arg = comma; |
| 930 | comma = split(arg); |
| 931 | } |
| 932 | |
| 933 | /* RFC 3361, enc byte is zero for names */ |
| 934 | if (new->opt == 120) |
| 935 | m[0] = 0; |
| 936 | new->len = (int) len + header_size; |
| 937 | new->val = m; |
| 938 | } |
| 939 | else |
| 940 | { |
| 941 | new->len = strlen(comma); |
| 942 | /* keep terminating zero on string */ |
| 943 | new->val = (unsigned char *)opt_string_alloc(comma); |
| 944 | new->flags |= DHOPT_STRING; |
| 945 | } |
| 946 | } |
| 947 | } |
| 948 | |
| 949 | if ((new->len > 255) || (new->len > 253 && (new->flags & (DHOPT_VENDOR | DHOPT_ENCAPSULATE)))) |
| 950 | problem = _("dhcp-option too long"); |
| 951 | |
| 952 | if (!problem) |
| 953 | { |
| 954 | if (flags == DHOPT_MATCH) |
| 955 | { |
| 956 | if ((new->flags & (DHOPT_ENCAPSULATE | DHOPT_VENDOR)) || |
| 957 | !new->netid || |
| 958 | new->netid->next) |
| 959 | problem = _("illegal dhcp-match"); |
| 960 | else |
| 961 | { |
| 962 | new->next = daemon->dhcp_match; |
| 963 | daemon->dhcp_match = new; |
| 964 | } |
| 965 | } |
| 966 | else |
| 967 | { |
| 968 | new->next = daemon->dhcp_opts; |
| 969 | daemon->dhcp_opts = new; |
| 970 | } |
| 971 | } |
| 972 | |
| 973 | return problem; |
| 974 | } |
| 975 | |
| 976 | #endif |
| 977 | |
| 978 | static char *one_opt(int option, char *arg, char *gen_prob, int nest) |
| 979 | { |
| 980 | int i; |
| 981 | char *comma, *problem = NULL;; |
| 982 | |
| 983 | if (option == '?') |
| 984 | return gen_prob; |
| 985 | |
| 986 | for (i=0; usage[i].opt != 0; i++) |
| 987 | if (usage[i].opt == option) |
| 988 | { |
| 989 | int rept = usage[i].rept; |
| 990 | |
| 991 | if (nest == 0) |
| 992 | { |
| 993 | /* command line */ |
| 994 | if (rept == ARG_USED_CL) |
| 995 | return _("illegal repeated flag"); |
| 996 | if (rept == ARG_ONE) |
| 997 | usage[i].rept = ARG_USED_CL; |
| 998 | } |
| 999 | else |
| 1000 | { |
| 1001 | /* allow file to override command line */ |
| 1002 | if (rept == ARG_USED_FILE) |
| 1003 | return _("illegal repeated keyword"); |
| 1004 | if (rept == ARG_USED_CL || rept == ARG_ONE) |
| 1005 | usage[i].rept = ARG_USED_FILE; |
| 1006 | } |
| 1007 | |
| 1008 | if (rept != ARG_DUP && rept != ARG_ONE && rept != ARG_USED_CL) |
| 1009 | { |
| 1010 | daemon->options |= rept; |
| 1011 | return NULL; |
| 1012 | } |
| 1013 | |
| 1014 | break; |
| 1015 | } |
| 1016 | |
| 1017 | switch (option) |
| 1018 | { |
| 1019 | case 'C': /* --conf-file */ |
| 1020 | { |
| 1021 | char *file = opt_string_alloc(arg); |
| 1022 | if (file) |
| 1023 | { |
| 1024 | one_file(file, nest, 0); |
| 1025 | free(file); |
| 1026 | } |
| 1027 | break; |
| 1028 | } |
| 1029 | |
| 1030 | case '7': /* --conf-dir */ |
| 1031 | { |
| 1032 | DIR *dir_stream; |
| 1033 | struct dirent *ent; |
| 1034 | char *directory, *path; |
| 1035 | struct list { |
| 1036 | char *suffix; |
| 1037 | struct list *next; |
| 1038 | } *ignore_suffix = NULL, *li; |
| 1039 | |
| 1040 | comma = split(arg); |
| 1041 | if (!(directory = opt_string_alloc(arg))) |
| 1042 | break; |
| 1043 | |
| 1044 | for (arg = comma; arg; arg = comma) |
| 1045 | { |
| 1046 | comma = split(arg); |
| 1047 | li = opt_malloc(sizeof(struct list)); |
| 1048 | li->next = ignore_suffix; |
| 1049 | ignore_suffix = li; |
| 1050 | /* Have to copy: buffer is overwritten */ |
| 1051 | li->suffix = opt_string_alloc(arg); |
| 1052 | }; |
| 1053 | |
| 1054 | if (!(dir_stream = opendir(directory))) |
| 1055 | die(_("cannot access directory %s: %s"), directory, EC_FILE); |
| 1056 | |
| 1057 | while ((ent = readdir(dir_stream))) |
| 1058 | { |
| 1059 | size_t len = strlen(ent->d_name); |
| 1060 | struct stat buf; |
| 1061 | |
| 1062 | /* ignore emacs backups and dotfiles */ |
| 1063 | if (len == 0 || |
| 1064 | ent->d_name[len - 1] == '~' || |
| 1065 | (ent->d_name[0] == '#' && ent->d_name[len - 1] == '#') || |
| 1066 | ent->d_name[0] == '.') |
| 1067 | continue; |
| 1068 | |
| 1069 | for (li = ignore_suffix; li; li = li->next) |
| 1070 | { |
| 1071 | /* check for proscribed suffices */ |
| 1072 | size_t ls = strlen(li->suffix); |
| 1073 | if (len > ls && |
| 1074 | strcmp(li->suffix, &ent->d_name[len - ls]) == 0) |
| 1075 | break; |
| 1076 | } |
| 1077 | if (li) |
| 1078 | continue; |
| 1079 | |
| 1080 | path = opt_malloc(strlen(directory) + len + 2); |
| 1081 | strcpy(path, directory); |
| 1082 | strcat(path, "/"); |
| 1083 | strcat(path, ent->d_name); |
| 1084 | |
| 1085 | if (stat(path, &buf) == -1) |
| 1086 | die(_("cannot access %s: %s"), path, EC_FILE); |
| 1087 | /* only reg files allowed. */ |
| 1088 | if (!S_ISREG(buf.st_mode)) |
| 1089 | continue; |
| 1090 | |
| 1091 | /* dir is one level, so files must be readable */ |
| 1092 | one_file(path, nest + 1, 0); |
| 1093 | free(path); |
| 1094 | } |
| 1095 | |
| 1096 | closedir(dir_stream); |
| 1097 | free(directory); |
| 1098 | for(; ignore_suffix; ignore_suffix = li) |
| 1099 | { |
| 1100 | li = ignore_suffix->next; |
| 1101 | free(ignore_suffix->suffix); |
| 1102 | free(ignore_suffix); |
| 1103 | } |
| 1104 | |
| 1105 | break; |
| 1106 | } |
| 1107 | |
| 1108 | case '8': /* --log-facility */ |
| 1109 | /* may be a filename */ |
| 1110 | if (strchr(arg, '/')) |
| 1111 | daemon->log_file = opt_string_alloc(arg); |
| 1112 | else |
San Mehat | 5658bcb | 2010-01-20 10:16:30 -0800 | [diff] [blame] | 1113 | { |
| 1114 | #ifdef __ANDROID__ |
| 1115 | problem = "Android does not support log facilities"; |
| 1116 | #else |
San Mehat | ffd6872 | 2010-01-20 09:56:15 -0800 | [diff] [blame] | 1117 | for (i = 0; facilitynames[i].c_name; i++) |
| 1118 | if (hostname_isequal((char *)facilitynames[i].c_name, arg)) |
| 1119 | break; |
| 1120 | |
| 1121 | if (facilitynames[i].c_name) |
| 1122 | daemon->log_fac = facilitynames[i].c_val; |
| 1123 | else |
| 1124 | problem = "bad log facility"; |
San Mehat | 5658bcb | 2010-01-20 10:16:30 -0800 | [diff] [blame] | 1125 | #endif |
San Mehat | ffd6872 | 2010-01-20 09:56:15 -0800 | [diff] [blame] | 1126 | } |
| 1127 | break; |
| 1128 | |
| 1129 | case 'x': /* --pid-file */ |
| 1130 | daemon->runfile = opt_string_alloc(arg); |
| 1131 | break; |
| 1132 | |
| 1133 | case LOPT_DHCP_HOST: /* --dhcp-hostfile */ |
| 1134 | if (daemon->dhcp_hosts_file) |
| 1135 | problem = _("only one dhcp-hostsfile allowed"); |
| 1136 | else |
| 1137 | daemon->dhcp_hosts_file = opt_string_alloc(arg); |
| 1138 | break; |
| 1139 | |
| 1140 | case LOPT_DHCP_OPTS: /* --dhcp-optsfile */ |
| 1141 | if (daemon->dhcp_opts_file) |
| 1142 | problem = _("only one dhcp-optsfile allowed"); |
| 1143 | else |
| 1144 | daemon->dhcp_opts_file = opt_string_alloc(arg); |
| 1145 | break; |
| 1146 | |
| 1147 | case 'r': /* --resolv-file */ |
| 1148 | { |
| 1149 | char *name = opt_string_alloc(arg); |
| 1150 | struct resolvc *new, *list = daemon->resolv_files; |
| 1151 | |
| 1152 | if (list && list->is_default) |
| 1153 | { |
| 1154 | /* replace default resolv file - possibly with nothing */ |
| 1155 | if (name) |
| 1156 | { |
| 1157 | list->is_default = 0; |
| 1158 | list->name = name; |
| 1159 | } |
| 1160 | else |
| 1161 | list = NULL; |
| 1162 | } |
| 1163 | else if (name) |
| 1164 | { |
| 1165 | new = opt_malloc(sizeof(struct resolvc)); |
| 1166 | new->next = list; |
| 1167 | new->name = name; |
| 1168 | new->is_default = 0; |
| 1169 | new->mtime = 0; |
| 1170 | new->logged = 0; |
| 1171 | list = new; |
| 1172 | } |
| 1173 | daemon->resolv_files = list; |
| 1174 | break; |
| 1175 | } |
| 1176 | |
| 1177 | case 'm': /* --mx-host */ |
| 1178 | { |
| 1179 | int pref = 1; |
| 1180 | struct mx_srv_record *new; |
| 1181 | char *name, *target = NULL; |
| 1182 | |
| 1183 | if ((comma = split(arg))) |
| 1184 | { |
| 1185 | char *prefstr; |
| 1186 | if ((prefstr = split(comma)) && !atoi_check16(prefstr, &pref)) |
| 1187 | problem = _("bad MX preference"); |
| 1188 | } |
| 1189 | |
| 1190 | if (!(name = canonicalise_opt(arg)) || |
| 1191 | (comma && !(target = canonicalise_opt(comma)))) |
| 1192 | problem = _("bad MX name"); |
| 1193 | |
| 1194 | new = opt_malloc(sizeof(struct mx_srv_record)); |
| 1195 | new->next = daemon->mxnames; |
| 1196 | daemon->mxnames = new; |
| 1197 | new->issrv = 0; |
| 1198 | new->name = name; |
| 1199 | new->target = target; /* may be NULL */ |
| 1200 | new->weight = pref; |
| 1201 | break; |
| 1202 | } |
| 1203 | |
| 1204 | case 't': /* --mx-target */ |
| 1205 | if (!(daemon->mxtarget = canonicalise_opt(arg))) |
| 1206 | problem = _("bad MX target"); |
| 1207 | break; |
| 1208 | |
| 1209 | #ifdef HAVE_DHCP |
| 1210 | case 'l': /* --dhcp-leasefile */ |
| 1211 | daemon->lease_file = opt_string_alloc(arg); |
| 1212 | break; |
| 1213 | |
| 1214 | case '6': /* --dhcp-script */ |
| 1215 | # if defined(NO_FORK) |
| 1216 | problem = _("cannot run scripts under uClinux"); |
| 1217 | # elif !defined(HAVE_SCRIPT) |
| 1218 | problem = _("recompile with HAVE_SCRIPT defined to enable lease-change scripts"); |
| 1219 | # else |
| 1220 | daemon->lease_change_command = opt_string_alloc(arg); |
| 1221 | # endif |
| 1222 | break; |
| 1223 | #endif |
| 1224 | |
| 1225 | case 'H': /* --addn-hosts */ |
| 1226 | { |
| 1227 | struct hostsfile *new = opt_malloc(sizeof(struct hostsfile)); |
| 1228 | static int hosts_index = 1; |
| 1229 | new->fname = opt_string_alloc(arg); |
| 1230 | new->index = hosts_index++; |
| 1231 | new->flags = 0; |
| 1232 | new->next = daemon->addn_hosts; |
| 1233 | daemon->addn_hosts = new; |
| 1234 | break; |
| 1235 | } |
| 1236 | |
| 1237 | case 's': /* --domain */ |
| 1238 | if (strcmp (arg, "#") == 0) |
| 1239 | daemon->options |= OPT_RESOLV_DOMAIN; |
| 1240 | else |
| 1241 | { |
| 1242 | char *d; |
| 1243 | comma = split(arg); |
| 1244 | if (!(d = canonicalise_opt(arg))) |
| 1245 | option = '?'; |
| 1246 | else |
| 1247 | { |
| 1248 | if (comma) |
| 1249 | { |
| 1250 | struct cond_domain *new = safe_malloc(sizeof(struct cond_domain)); |
| 1251 | unhide_metas(comma); |
| 1252 | if ((arg = split_chr(comma, '/'))) |
| 1253 | { |
| 1254 | int mask; |
| 1255 | if ((new->start.s_addr = inet_addr(comma)) == (in_addr_t)-1 || |
| 1256 | !atoi_check(arg, &mask)) |
| 1257 | option = '?'; |
| 1258 | else |
| 1259 | { |
| 1260 | mask = (1 << (32 - mask)) - 1; |
| 1261 | new->start.s_addr = ntohl(htonl(new->start.s_addr) & ~mask); |
| 1262 | new->end.s_addr = new->start.s_addr | htonl(mask); |
| 1263 | } |
| 1264 | } |
| 1265 | else if ((arg = split(comma))) |
| 1266 | { |
| 1267 | if ((new->start.s_addr = inet_addr(comma)) == (in_addr_t)-1 || |
| 1268 | (new->end.s_addr = inet_addr(arg)) == (in_addr_t)-1) |
| 1269 | option = '?'; |
| 1270 | } |
| 1271 | else if ((new->start.s_addr = new->end.s_addr = inet_addr(comma)) == (in_addr_t)-1) |
| 1272 | option = '?'; |
| 1273 | |
| 1274 | new->domain = d; |
| 1275 | new->next = daemon->cond_domain; |
| 1276 | daemon->cond_domain = new; |
| 1277 | } |
| 1278 | else |
| 1279 | daemon->domain_suffix = d; |
| 1280 | } |
| 1281 | } |
| 1282 | break; |
| 1283 | |
| 1284 | case 'u': /* --user */ |
| 1285 | daemon->username = opt_string_alloc(arg); |
| 1286 | break; |
| 1287 | |
| 1288 | case 'g': /* --group */ |
| 1289 | daemon->groupname = opt_string_alloc(arg); |
| 1290 | daemon->group_set = 1; |
| 1291 | break; |
| 1292 | |
| 1293 | #ifdef HAVE_DHCP |
| 1294 | case LOPT_SCRIPTUSR: /* --scriptuser */ |
| 1295 | daemon->scriptuser = opt_string_alloc(arg); |
| 1296 | break; |
| 1297 | #endif |
| 1298 | |
| 1299 | case 'i': /* --interface */ |
| 1300 | do { |
| 1301 | struct iname *new = opt_malloc(sizeof(struct iname)); |
| 1302 | comma = split(arg); |
| 1303 | new->next = daemon->if_names; |
| 1304 | daemon->if_names = new; |
| 1305 | /* new->name may be NULL if someone does |
| 1306 | "interface=" to disable all interfaces except loop. */ |
| 1307 | new->name = opt_string_alloc(arg); |
| 1308 | new->isloop = new->used = 0; |
| 1309 | arg = comma; |
| 1310 | } while (arg); |
| 1311 | break; |
| 1312 | |
| 1313 | case 'I': /* --except-interface */ |
| 1314 | case '2': /* --no-dhcp-interface */ |
| 1315 | do { |
| 1316 | struct iname *new = opt_malloc(sizeof(struct iname)); |
| 1317 | comma = split(arg); |
| 1318 | new->name = opt_string_alloc(arg); |
| 1319 | if (option == 'I') |
| 1320 | { |
| 1321 | new->next = daemon->if_except; |
| 1322 | daemon->if_except = new; |
| 1323 | } |
| 1324 | else |
| 1325 | { |
| 1326 | new->next = daemon->dhcp_except; |
| 1327 | daemon->dhcp_except = new; |
| 1328 | } |
| 1329 | arg = comma; |
| 1330 | } while (arg); |
| 1331 | break; |
| 1332 | |
| 1333 | case 'B': /* --bogus-nxdomain */ |
| 1334 | { |
| 1335 | struct in_addr addr; |
| 1336 | unhide_metas(arg); |
| 1337 | if (arg && (addr.s_addr = inet_addr(arg)) != (in_addr_t)-1) |
| 1338 | { |
| 1339 | struct bogus_addr *baddr = opt_malloc(sizeof(struct bogus_addr)); |
| 1340 | baddr->next = daemon->bogus_addr; |
| 1341 | daemon->bogus_addr = baddr; |
| 1342 | baddr->addr = addr; |
| 1343 | } |
| 1344 | else |
| 1345 | option = '?'; /* error */ |
| 1346 | break; |
| 1347 | } |
| 1348 | |
| 1349 | case 'a': /* --listen-address */ |
| 1350 | do { |
| 1351 | struct iname *new = opt_malloc(sizeof(struct iname)); |
| 1352 | comma = split(arg); |
| 1353 | unhide_metas(arg); |
| 1354 | new->next = daemon->if_addrs; |
| 1355 | if (arg && (new->addr.in.sin_addr.s_addr = inet_addr(arg)) != (in_addr_t)-1) |
| 1356 | { |
| 1357 | new->addr.sa.sa_family = AF_INET; |
| 1358 | #ifdef HAVE_SOCKADDR_SA_LEN |
| 1359 | new->addr.in.sin_len = sizeof(new->addr.in); |
| 1360 | #endif |
| 1361 | } |
| 1362 | #ifdef HAVE_IPV6 |
| 1363 | else if (arg && inet_pton(AF_INET6, arg, &new->addr.in6.sin6_addr) > 0) |
| 1364 | { |
| 1365 | new->addr.sa.sa_family = AF_INET6; |
| 1366 | new->addr.in6.sin6_flowinfo = 0; |
| 1367 | new->addr.in6.sin6_scope_id = 0; |
| 1368 | #ifdef HAVE_SOCKADDR_SA_LEN |
| 1369 | new->addr.in6.sin6_len = sizeof(new->addr.in6); |
| 1370 | #endif |
| 1371 | } |
| 1372 | #endif |
| 1373 | else |
| 1374 | { |
| 1375 | option = '?'; /* error */ |
| 1376 | break; |
| 1377 | } |
| 1378 | |
| 1379 | daemon->if_addrs = new; |
| 1380 | arg = comma; |
| 1381 | } while (arg); |
| 1382 | break; |
| 1383 | |
| 1384 | case 'S': /* --server */ |
| 1385 | case LOPT_LOCAL: /* --local */ |
| 1386 | case 'A': /* --address */ |
| 1387 | { |
| 1388 | struct server *serv, *newlist = NULL; |
| 1389 | |
| 1390 | unhide_metas(arg); |
| 1391 | |
| 1392 | if (arg && *arg == '/') |
| 1393 | { |
| 1394 | char *end; |
| 1395 | arg++; |
| 1396 | while ((end = split_chr(arg, '/'))) |
| 1397 | { |
| 1398 | char *domain = NULL; |
| 1399 | /* # matches everything and becomes a zero length domain string */ |
| 1400 | if (strcmp(arg, "#") == 0) |
| 1401 | domain = ""; |
| 1402 | else if (strlen (arg) != 0 && !(domain = canonicalise_opt(arg))) |
| 1403 | option = '?'; |
| 1404 | serv = opt_malloc(sizeof(struct server)); |
| 1405 | memset(serv, 0, sizeof(struct server)); |
| 1406 | serv->next = newlist; |
| 1407 | newlist = serv; |
| 1408 | serv->domain = domain; |
| 1409 | serv->flags = domain ? SERV_HAS_DOMAIN : SERV_FOR_NODOTS; |
| 1410 | arg = end; |
| 1411 | } |
| 1412 | if (!newlist) |
| 1413 | { |
| 1414 | option = '?'; |
| 1415 | break; |
| 1416 | } |
| 1417 | |
| 1418 | } |
| 1419 | else |
| 1420 | { |
| 1421 | newlist = opt_malloc(sizeof(struct server)); |
| 1422 | memset(newlist, 0, sizeof(struct server)); |
| 1423 | } |
| 1424 | |
| 1425 | if (option == 'A') |
| 1426 | { |
| 1427 | newlist->flags |= SERV_LITERAL_ADDRESS; |
| 1428 | if (!(newlist->flags & SERV_TYPE)) |
| 1429 | option = '?'; |
| 1430 | } |
| 1431 | |
| 1432 | if (!arg || !*arg) |
| 1433 | { |
| 1434 | newlist->flags |= SERV_NO_ADDR; /* no server */ |
| 1435 | if (newlist->flags & SERV_LITERAL_ADDRESS) |
| 1436 | option = '?'; |
| 1437 | } |
| 1438 | else |
| 1439 | { |
| 1440 | int source_port = 0, serv_port = NAMESERVER_PORT; |
| 1441 | char *portno, *source; |
| 1442 | |
| 1443 | if ((source = split_chr(arg, '@')) && /* is there a source. */ |
| 1444 | (portno = split_chr(source, '#')) && |
| 1445 | !atoi_check16(portno, &source_port)) |
| 1446 | problem = _("bad port"); |
| 1447 | |
| 1448 | if ((portno = split_chr(arg, '#')) && /* is there a port no. */ |
| 1449 | !atoi_check16(portno, &serv_port)) |
| 1450 | problem = _("bad port"); |
| 1451 | |
| 1452 | if ((newlist->addr.in.sin_addr.s_addr = inet_addr(arg)) != (in_addr_t) -1) |
| 1453 | { |
| 1454 | newlist->addr.in.sin_port = htons(serv_port); |
| 1455 | newlist->source_addr.in.sin_port = htons(source_port); |
| 1456 | newlist->addr.sa.sa_family = newlist->source_addr.sa.sa_family = AF_INET; |
| 1457 | #ifdef HAVE_SOCKADDR_SA_LEN |
| 1458 | newlist->source_addr.in.sin_len = newlist->addr.in.sin_len = sizeof(struct sockaddr_in); |
| 1459 | #endif |
| 1460 | if (source) |
| 1461 | { |
| 1462 | newlist->flags |= SERV_HAS_SOURCE; |
| 1463 | if ((newlist->source_addr.in.sin_addr.s_addr = inet_addr(source)) == (in_addr_t) -1) |
| 1464 | { |
| 1465 | #if defined(SO_BINDTODEVICE) |
| 1466 | newlist->source_addr.in.sin_addr.s_addr = INADDR_ANY; |
| 1467 | strncpy(newlist->interface, source, IF_NAMESIZE); |
| 1468 | #else |
| 1469 | problem = _("interface binding not supported"); |
| 1470 | #endif |
| 1471 | } |
| 1472 | } |
| 1473 | else |
| 1474 | newlist->source_addr.in.sin_addr.s_addr = INADDR_ANY; |
| 1475 | } |
| 1476 | #ifdef HAVE_IPV6 |
| 1477 | else if (inet_pton(AF_INET6, arg, &newlist->addr.in6.sin6_addr) > 0) |
| 1478 | { |
| 1479 | newlist->addr.in6.sin6_port = htons(serv_port); |
| 1480 | newlist->source_addr.in6.sin6_port = htons(source_port); |
| 1481 | newlist->addr.sa.sa_family = newlist->source_addr.sa.sa_family = AF_INET6; |
| 1482 | #ifdef HAVE_SOCKADDR_SA_LEN |
| 1483 | newlist->addr.in6.sin6_len = newlist->source_addr.in6.sin6_len = sizeof(newlist->addr.in6); |
| 1484 | #endif |
| 1485 | if (source) |
| 1486 | { |
| 1487 | newlist->flags |= SERV_HAS_SOURCE; |
| 1488 | if (inet_pton(AF_INET6, source, &newlist->source_addr.in6.sin6_addr) == 0) |
| 1489 | { |
| 1490 | #if defined(SO_BINDTODEVICE) |
| 1491 | newlist->source_addr.in6.sin6_addr = in6addr_any; |
| 1492 | strncpy(newlist->interface, source, IF_NAMESIZE); |
| 1493 | #else |
| 1494 | problem = _("interface binding not supported"); |
| 1495 | #endif |
| 1496 | } |
| 1497 | } |
| 1498 | else |
| 1499 | newlist->source_addr.in6.sin6_addr = in6addr_any; |
| 1500 | } |
| 1501 | #endif |
| 1502 | else |
| 1503 | option = '?'; /* error */ |
| 1504 | |
| 1505 | } |
| 1506 | |
| 1507 | serv = newlist; |
| 1508 | while (serv->next) |
| 1509 | { |
| 1510 | serv->next->flags = serv->flags; |
| 1511 | serv->next->addr = serv->addr; |
| 1512 | serv->next->source_addr = serv->source_addr; |
| 1513 | serv = serv->next; |
| 1514 | } |
| 1515 | serv->next = daemon->servers; |
| 1516 | daemon->servers = newlist; |
| 1517 | break; |
| 1518 | } |
| 1519 | |
| 1520 | case 'c': /* --cache-size */ |
| 1521 | { |
| 1522 | int size; |
| 1523 | |
| 1524 | if (!atoi_check(arg, &size)) |
| 1525 | option = '?'; |
| 1526 | else |
| 1527 | { |
| 1528 | /* zero is OK, and means no caching. */ |
| 1529 | |
| 1530 | if (size < 0) |
| 1531 | size = 0; |
| 1532 | else if (size > 10000) |
| 1533 | size = 10000; |
| 1534 | |
| 1535 | daemon->cachesize = size; |
| 1536 | } |
| 1537 | break; |
| 1538 | } |
| 1539 | |
| 1540 | case 'p': /* --port */ |
| 1541 | if (!atoi_check16(arg, &daemon->port)) |
| 1542 | option = '?'; |
| 1543 | break; |
| 1544 | |
| 1545 | case LOPT_MINPORT: /* --min-port */ |
| 1546 | if (!atoi_check16(arg, &daemon->min_port)) |
| 1547 | option = '?'; |
| 1548 | break; |
| 1549 | |
| 1550 | case '0': /* --dns-forward-max */ |
| 1551 | if (!atoi_check(arg, &daemon->ftabsize)) |
| 1552 | option = '?'; |
| 1553 | break; |
| 1554 | |
| 1555 | case LOPT_MAX_LOGS: /* --log-async */ |
| 1556 | daemon->max_logs = LOG_MAX; /* default */ |
| 1557 | if (arg && !atoi_check(arg, &daemon->max_logs)) |
| 1558 | option = '?'; |
| 1559 | else if (daemon->max_logs > 100) |
| 1560 | daemon->max_logs = 100; |
| 1561 | break; |
| 1562 | |
| 1563 | case 'P': /* --edns-packet-max */ |
| 1564 | { |
| 1565 | int i; |
| 1566 | if (!atoi_check(arg, &i)) |
| 1567 | option = '?'; |
| 1568 | daemon->edns_pktsz = (unsigned short)i; |
| 1569 | break; |
| 1570 | } |
| 1571 | |
| 1572 | case 'Q': /* --query-port */ |
| 1573 | if (!atoi_check16(arg, &daemon->query_port)) |
| 1574 | option = '?'; |
| 1575 | /* if explicitly set to zero, use single OS ephemeral port |
| 1576 | and disable random ports */ |
| 1577 | if (daemon->query_port == 0) |
| 1578 | daemon->osport = 1; |
| 1579 | break; |
| 1580 | |
| 1581 | case 'T': /* --local-ttl */ |
| 1582 | case LOPT_NEGTTL: /* --neg-ttl */ |
| 1583 | { |
| 1584 | int ttl; |
| 1585 | if (!atoi_check(arg, &ttl)) |
| 1586 | option = '?'; |
| 1587 | else if (option == LOPT_NEGTTL) |
| 1588 | daemon->neg_ttl = (unsigned long)ttl; |
| 1589 | else |
| 1590 | daemon->local_ttl = (unsigned long)ttl; |
| 1591 | break; |
| 1592 | } |
| 1593 | |
| 1594 | #ifdef HAVE_DHCP |
| 1595 | case 'X': /* --dhcp-lease-max */ |
| 1596 | if (!atoi_check(arg, &daemon->dhcp_max)) |
| 1597 | option = '?'; |
| 1598 | break; |
| 1599 | #endif |
| 1600 | |
| 1601 | #ifdef HAVE_TFTP |
| 1602 | case LOPT_TFTP_MAX: /* --tftp-max */ |
| 1603 | if (!atoi_check(arg, &daemon->tftp_max)) |
| 1604 | option = '?'; |
| 1605 | break; |
| 1606 | |
| 1607 | case LOPT_PREFIX: /* --tftp-prefix */ |
| 1608 | daemon->tftp_prefix = opt_string_alloc(arg); |
| 1609 | break; |
| 1610 | |
| 1611 | case LOPT_TFTPPORTS: /* --tftp-port-range */ |
| 1612 | if (!(comma = split(arg)) || |
| 1613 | !atoi_check16(arg, &daemon->start_tftp_port) || |
| 1614 | !atoi_check16(comma, &daemon->end_tftp_port)) |
| 1615 | problem = _("bad port range"); |
| 1616 | |
| 1617 | if (daemon->start_tftp_port > daemon->end_tftp_port) |
| 1618 | { |
| 1619 | int tmp = daemon->start_tftp_port; |
| 1620 | daemon->start_tftp_port = daemon->end_tftp_port; |
| 1621 | daemon->end_tftp_port = tmp; |
| 1622 | } |
| 1623 | |
| 1624 | break; |
| 1625 | #endif |
| 1626 | |
| 1627 | case LOPT_BRIDGE: /* --bridge-interface */ |
| 1628 | { |
| 1629 | struct dhcp_bridge *new = opt_malloc(sizeof(struct dhcp_bridge)); |
| 1630 | if (!(comma = split(arg))) |
| 1631 | { |
| 1632 | problem = _("bad bridge-interface"); |
| 1633 | break; |
| 1634 | } |
| 1635 | |
| 1636 | strncpy(new->iface, arg, IF_NAMESIZE); |
| 1637 | new->alias = NULL; |
| 1638 | new->next = daemon->bridges; |
| 1639 | daemon->bridges = new; |
| 1640 | |
| 1641 | do { |
| 1642 | arg = comma; |
| 1643 | comma = split(arg); |
| 1644 | if (strlen(arg) != 0) |
| 1645 | { |
| 1646 | struct dhcp_bridge *b = opt_malloc(sizeof(struct dhcp_bridge)); |
| 1647 | b->next = new->alias; |
| 1648 | new->alias = b; |
| 1649 | strncpy(b->iface, arg, IF_NAMESIZE); |
| 1650 | } |
| 1651 | } while (comma); |
| 1652 | |
| 1653 | break; |
| 1654 | } |
| 1655 | |
| 1656 | #ifdef HAVE_DHCP |
| 1657 | case 'F': /* --dhcp-range */ |
| 1658 | { |
| 1659 | int k, leasepos = 2; |
| 1660 | char *cp, *a[5] = { NULL, NULL, NULL, NULL, NULL }; |
| 1661 | struct dhcp_context *new = opt_malloc(sizeof(struct dhcp_context)); |
| 1662 | |
| 1663 | new->next = daemon->dhcp; |
| 1664 | new->lease_time = DEFLEASE; |
| 1665 | new->addr_epoch = 0; |
| 1666 | new->netmask.s_addr = 0; |
| 1667 | new->broadcast.s_addr = 0; |
| 1668 | new->router.s_addr = 0; |
| 1669 | new->netid.net = NULL; |
| 1670 | new->filter = NULL; |
| 1671 | new->flags = 0; |
| 1672 | |
| 1673 | gen_prob = _("bad dhcp-range"); |
| 1674 | |
| 1675 | if (!arg) |
| 1676 | { |
| 1677 | option = '?'; |
| 1678 | break; |
| 1679 | } |
| 1680 | |
| 1681 | while(1) |
| 1682 | { |
| 1683 | for (cp = arg; *cp; cp++) |
| 1684 | if (!(*cp == ' ' || *cp == '.' || (*cp >='0' && *cp <= '9'))) |
| 1685 | break; |
| 1686 | |
| 1687 | if (*cp != ',' && (comma = split(arg))) |
| 1688 | { |
| 1689 | if (strstr(arg, "net:") == arg) |
| 1690 | { |
| 1691 | struct dhcp_netid *tt = opt_malloc(sizeof (struct dhcp_netid)); |
| 1692 | tt->net = opt_string_alloc(arg+4); |
| 1693 | tt->next = new->filter; |
| 1694 | new->filter = tt; |
| 1695 | } |
| 1696 | else |
| 1697 | { |
| 1698 | if (new->netid.net) |
| 1699 | problem = _("only one netid tag allowed"); |
| 1700 | else |
| 1701 | new->netid.net = opt_string_alloc(arg); |
| 1702 | } |
| 1703 | arg = comma; |
| 1704 | } |
| 1705 | else |
| 1706 | { |
| 1707 | a[0] = arg; |
| 1708 | break; |
| 1709 | } |
| 1710 | } |
| 1711 | |
| 1712 | for (k = 1; k < 5; k++) |
| 1713 | if (!(a[k] = split(a[k-1]))) |
| 1714 | break; |
| 1715 | |
| 1716 | if ((k < 2) || ((new->start.s_addr = inet_addr(a[0])) == (in_addr_t)-1)) |
| 1717 | option = '?'; |
| 1718 | else if (strcmp(a[1], "static") == 0) |
| 1719 | { |
| 1720 | new->end = new->start; |
| 1721 | new->flags |= CONTEXT_STATIC; |
| 1722 | } |
| 1723 | else if (strcmp(a[1], "proxy") == 0) |
| 1724 | { |
| 1725 | new->end = new->start; |
| 1726 | new->flags |= CONTEXT_PROXY; |
| 1727 | } |
| 1728 | else if ((new->end.s_addr = inet_addr(a[1])) == (in_addr_t)-1) |
| 1729 | option = '?'; |
| 1730 | |
| 1731 | if (ntohl(new->start.s_addr) > ntohl(new->end.s_addr)) |
| 1732 | { |
| 1733 | struct in_addr tmp = new->start; |
| 1734 | new->start = new->end; |
| 1735 | new->end = tmp; |
| 1736 | } |
| 1737 | |
| 1738 | if (option != '?' && k >= 3 && strchr(a[2], '.') && |
| 1739 | ((new->netmask.s_addr = inet_addr(a[2])) != (in_addr_t)-1)) |
| 1740 | { |
| 1741 | new->flags |= CONTEXT_NETMASK; |
| 1742 | leasepos = 3; |
| 1743 | if (!is_same_net(new->start, new->end, new->netmask)) |
| 1744 | problem = _("inconsistent DHCP range"); |
| 1745 | } |
| 1746 | daemon->dhcp = new; |
| 1747 | |
| 1748 | if (k >= 4 && strchr(a[3], '.') && |
| 1749 | ((new->broadcast.s_addr = inet_addr(a[3])) != (in_addr_t)-1)) |
| 1750 | { |
| 1751 | new->flags |= CONTEXT_BRDCAST; |
| 1752 | leasepos = 4; |
| 1753 | } |
| 1754 | |
| 1755 | if (k >= leasepos+1) |
| 1756 | { |
| 1757 | if (strcmp(a[leasepos], "infinite") == 0) |
| 1758 | new->lease_time = 0xffffffff; |
| 1759 | else |
| 1760 | { |
| 1761 | int fac = 1; |
| 1762 | if (strlen(a[leasepos]) > 0) |
| 1763 | { |
| 1764 | switch (a[leasepos][strlen(a[leasepos]) - 1]) |
| 1765 | { |
| 1766 | case 'd': |
| 1767 | case 'D': |
| 1768 | fac *= 24; |
| 1769 | /* fall though */ |
| 1770 | case 'h': |
| 1771 | case 'H': |
| 1772 | fac *= 60; |
| 1773 | /* fall through */ |
| 1774 | case 'm': |
| 1775 | case 'M': |
| 1776 | fac *= 60; |
| 1777 | /* fall through */ |
| 1778 | case 's': |
| 1779 | case 'S': |
| 1780 | a[leasepos][strlen(a[leasepos]) - 1] = 0; |
| 1781 | } |
| 1782 | |
| 1783 | new->lease_time = atoi(a[leasepos]) * fac; |
| 1784 | /* Leases of a minute or less confuse |
| 1785 | some clients, notably Apple's */ |
| 1786 | if (new->lease_time < 120) |
| 1787 | new->lease_time = 120; |
| 1788 | } |
| 1789 | } |
| 1790 | } |
| 1791 | break; |
| 1792 | } |
| 1793 | |
| 1794 | case LOPT_BANK: |
| 1795 | case 'G': /* --dhcp-host */ |
| 1796 | { |
| 1797 | int j, k = 0; |
| 1798 | char *a[6] = { NULL, NULL, NULL, NULL, NULL, NULL }; |
| 1799 | struct dhcp_config *new; |
| 1800 | struct in_addr in; |
| 1801 | |
| 1802 | new = opt_malloc(sizeof(struct dhcp_config)); |
| 1803 | |
| 1804 | new->next = daemon->dhcp_conf; |
| 1805 | new->flags = (option == LOPT_BANK) ? CONFIG_BANK : 0; |
| 1806 | new->hwaddr = NULL; |
| 1807 | |
| 1808 | if ((a[0] = arg)) |
| 1809 | for (k = 1; k < 6; k++) |
| 1810 | if (!(a[k] = split(a[k-1]))) |
| 1811 | break; |
| 1812 | |
| 1813 | for (j = 0; j < k; j++) |
| 1814 | if (strchr(a[j], ':')) /* ethernet address, netid or binary CLID */ |
| 1815 | { |
| 1816 | char *arg = a[j]; |
| 1817 | |
| 1818 | if ((arg[0] == 'i' || arg[0] == 'I') && |
| 1819 | (arg[1] == 'd' || arg[1] == 'D') && |
| 1820 | arg[2] == ':') |
| 1821 | { |
| 1822 | if (arg[3] == '*') |
| 1823 | new->flags |= CONFIG_NOCLID; |
| 1824 | else |
| 1825 | { |
| 1826 | int len; |
| 1827 | arg += 3; /* dump id: */ |
| 1828 | if (strchr(arg, ':')) |
| 1829 | len = parse_hex(arg, (unsigned char *)arg, -1, NULL, NULL); |
| 1830 | else |
| 1831 | { |
| 1832 | unhide_metas(arg); |
| 1833 | len = (int) strlen(arg); |
| 1834 | } |
| 1835 | |
| 1836 | if ((new->clid = opt_malloc(len))) |
| 1837 | { |
| 1838 | new->flags |= CONFIG_CLID; |
| 1839 | new->clid_len = len; |
| 1840 | memcpy(new->clid, arg, len); |
| 1841 | } |
| 1842 | } |
| 1843 | } |
| 1844 | else if (strstr(arg, "net:") == arg) |
| 1845 | { |
| 1846 | int len = strlen(arg + 4) + 1; |
| 1847 | if ((new->netid.net = opt_malloc(len))) |
| 1848 | { |
| 1849 | new->flags |= CONFIG_NETID; |
| 1850 | strcpy(new->netid.net, arg+4); |
| 1851 | unhide_metas(new->netid.net); |
| 1852 | } |
| 1853 | } |
| 1854 | else |
| 1855 | { |
| 1856 | struct hwaddr_config *newhw = opt_malloc(sizeof(struct hwaddr_config)); |
| 1857 | newhw->next = new->hwaddr; |
| 1858 | new->hwaddr = newhw; |
| 1859 | newhw->hwaddr_len = parse_hex(a[j], newhw->hwaddr, DHCP_CHADDR_MAX, |
| 1860 | &newhw->wildcard_mask, &newhw->hwaddr_type); |
| 1861 | } |
| 1862 | } |
| 1863 | else if (strchr(a[j], '.') && (in.s_addr = inet_addr(a[j])) != (in_addr_t)-1) |
| 1864 | { |
| 1865 | new->addr = in; |
| 1866 | new->flags |= CONFIG_ADDR; |
| 1867 | } |
| 1868 | else |
| 1869 | { |
| 1870 | char *cp, *lastp = NULL, last = 0; |
| 1871 | int fac = 1; |
| 1872 | |
| 1873 | if (strlen(a[j]) > 1) |
| 1874 | { |
| 1875 | lastp = a[j] + strlen(a[j]) - 1; |
| 1876 | last = *lastp; |
| 1877 | switch (last) |
| 1878 | { |
| 1879 | case 'd': |
| 1880 | case 'D': |
| 1881 | fac *= 24; |
| 1882 | /* fall through */ |
| 1883 | case 'h': |
| 1884 | case 'H': |
| 1885 | fac *= 60; |
| 1886 | /* fall through */ |
| 1887 | case 'm': |
| 1888 | case 'M': |
| 1889 | fac *= 60; |
| 1890 | /* fall through */ |
| 1891 | case 's': |
| 1892 | case 'S': |
| 1893 | *lastp = 0; |
| 1894 | } |
| 1895 | } |
| 1896 | |
| 1897 | for (cp = a[j]; *cp; cp++) |
| 1898 | if (!isdigit((int)*cp) && *cp != ' ') |
| 1899 | break; |
| 1900 | |
| 1901 | if (*cp) |
| 1902 | { |
| 1903 | if (lastp) |
| 1904 | *lastp = last; |
| 1905 | if (strcmp(a[j], "infinite") == 0) |
| 1906 | { |
| 1907 | new->lease_time = 0xffffffff; |
| 1908 | new->flags |= CONFIG_TIME; |
| 1909 | } |
| 1910 | else if (strcmp(a[j], "ignore") == 0) |
| 1911 | new->flags |= CONFIG_DISABLE; |
| 1912 | else |
| 1913 | { |
| 1914 | if (!(new->hostname = canonicalise_opt(a[j])) || |
| 1915 | !legal_hostname(new->hostname)) |
| 1916 | problem = _("bad DHCP host name"); |
| 1917 | else |
| 1918 | new->flags |= CONFIG_NAME; |
| 1919 | new->domain = NULL; |
| 1920 | } |
| 1921 | } |
| 1922 | else |
| 1923 | { |
| 1924 | new->lease_time = atoi(a[j]) * fac; |
| 1925 | /* Leases of a minute or less confuse |
| 1926 | some clients, notably Apple's */ |
| 1927 | if (new->lease_time < 120) |
| 1928 | new->lease_time = 120; |
| 1929 | new->flags |= CONFIG_TIME; |
| 1930 | } |
| 1931 | } |
| 1932 | |
| 1933 | daemon->dhcp_conf = new; |
| 1934 | break; |
| 1935 | } |
| 1936 | |
| 1937 | case 'O': /* --dhcp-option */ |
| 1938 | case LOPT_FORCE: /* --dhcp-option-force */ |
| 1939 | case LOPT_OPTS: |
| 1940 | case LOPT_MATCH: /* --dhcp-match */ |
| 1941 | problem = parse_dhcp_opt(arg, |
| 1942 | option == LOPT_FORCE ? DHOPT_FORCE : |
| 1943 | (option == LOPT_MATCH ? DHOPT_MATCH : |
| 1944 | (option == LOPT_OPTS ? DHOPT_BANK : 0))); |
| 1945 | break; |
| 1946 | |
| 1947 | case 'M': /* --dhcp-boot */ |
| 1948 | { |
| 1949 | struct dhcp_netid *id = NULL; |
| 1950 | while (arg && strstr(arg, "net:") == arg) |
| 1951 | { |
| 1952 | struct dhcp_netid *newid = opt_malloc(sizeof(struct dhcp_netid)); |
| 1953 | newid->next = id; |
| 1954 | id = newid; |
| 1955 | comma = split(arg); |
| 1956 | newid->net = opt_string_alloc(arg+4); |
| 1957 | arg = comma; |
| 1958 | }; |
| 1959 | |
| 1960 | if (!arg) |
| 1961 | option = '?'; |
| 1962 | else |
| 1963 | { |
| 1964 | char *dhcp_file, *dhcp_sname = NULL; |
| 1965 | struct in_addr dhcp_next_server; |
| 1966 | comma = split(arg); |
| 1967 | dhcp_file = opt_string_alloc(arg); |
| 1968 | dhcp_next_server.s_addr = 0; |
| 1969 | if (comma) |
| 1970 | { |
| 1971 | arg = comma; |
| 1972 | comma = split(arg); |
| 1973 | dhcp_sname = opt_string_alloc(arg); |
| 1974 | if (comma) |
| 1975 | { |
| 1976 | unhide_metas(comma); |
| 1977 | if ((dhcp_next_server.s_addr = inet_addr(comma)) == (in_addr_t)-1) |
| 1978 | option = '?'; |
| 1979 | } |
| 1980 | } |
| 1981 | if (option != '?') |
| 1982 | { |
| 1983 | struct dhcp_boot *new = opt_malloc(sizeof(struct dhcp_boot)); |
| 1984 | new->file = dhcp_file; |
| 1985 | new->sname = dhcp_sname; |
| 1986 | new->next_server = dhcp_next_server; |
| 1987 | new->netid = id; |
| 1988 | new->next = daemon->boot_config; |
| 1989 | daemon->boot_config = new; |
| 1990 | } |
| 1991 | } |
| 1992 | |
| 1993 | break; |
| 1994 | } |
| 1995 | |
| 1996 | case LOPT_PXE_PROMT: /* --pxe-prompt */ |
| 1997 | { |
| 1998 | struct dhcp_opt *new = opt_malloc(sizeof(struct dhcp_opt)); |
| 1999 | int timeout; |
| 2000 | |
| 2001 | new->netid = NULL; |
| 2002 | new->opt = 10; /* PXE_MENU_PROMPT */ |
| 2003 | |
| 2004 | while (arg && strstr(arg, "net:") == arg) |
| 2005 | { |
| 2006 | struct dhcp_netid *nn = opt_malloc(sizeof (struct dhcp_netid)); |
| 2007 | comma = split(arg); |
| 2008 | nn->next = new->netid; |
| 2009 | new->netid = nn; |
| 2010 | nn->net = opt_string_alloc(arg+4); |
| 2011 | arg = comma; |
| 2012 | } |
| 2013 | |
| 2014 | if (!arg) |
| 2015 | option = '?'; |
| 2016 | else |
| 2017 | { |
| 2018 | comma = split(arg); |
| 2019 | unhide_metas(arg); |
| 2020 | new->len = strlen(arg) + 1; |
| 2021 | new->val = opt_malloc(new->len); |
| 2022 | memcpy(new->val + 1, arg, new->len - 1); |
| 2023 | |
| 2024 | new->u.vendor_class = (unsigned char *)"PXEClient"; |
| 2025 | new->flags = DHOPT_VENDOR; |
| 2026 | |
| 2027 | if (comma && atoi_check(comma, &timeout)) |
| 2028 | *(new->val) = timeout; |
| 2029 | else |
| 2030 | *(new->val) = 255; |
| 2031 | |
| 2032 | new->next = daemon->dhcp_opts; |
| 2033 | daemon->dhcp_opts = new; |
| 2034 | daemon->enable_pxe = 1; |
| 2035 | } |
| 2036 | |
| 2037 | break; |
| 2038 | } |
| 2039 | |
| 2040 | case LOPT_PXE_SERV: /* --pxe-service */ |
| 2041 | { |
| 2042 | struct pxe_service *new = opt_malloc(sizeof(struct pxe_service)); |
| 2043 | char *CSA[] = { "x86PC", "PC98", "IA64_EFI", "Alpha", "Arc_x86", "Intel_Lean_Client", |
| 2044 | "IA32_EFI", "BC_EFI", "Xscale_EFI", "x86-64_EFI", NULL }; |
| 2045 | static int boottype = 32768; |
| 2046 | |
| 2047 | new->netid = NULL; |
| 2048 | new->server.s_addr = 0; |
| 2049 | |
| 2050 | while (arg && strstr(arg, "net:") == arg) |
| 2051 | { |
| 2052 | struct dhcp_netid *nn = opt_malloc(sizeof (struct dhcp_netid)); |
| 2053 | comma = split(arg); |
| 2054 | nn->next = new->netid; |
| 2055 | new->netid = nn; |
| 2056 | nn->net = opt_string_alloc(arg+4); |
| 2057 | arg = comma; |
| 2058 | } |
| 2059 | |
| 2060 | if (arg && (comma = split(arg))) |
| 2061 | { |
| 2062 | for (i = 0; CSA[i]; i++) |
| 2063 | if (strcasecmp(CSA[i], arg) == 0) |
| 2064 | break; |
| 2065 | |
| 2066 | if (CSA[i] || atoi_check(arg, &i)) |
| 2067 | { |
| 2068 | arg = comma; |
| 2069 | comma = split(arg); |
| 2070 | |
| 2071 | new->CSA = i; |
| 2072 | new->menu = opt_string_alloc(arg); |
| 2073 | |
| 2074 | if (comma) |
| 2075 | { |
| 2076 | arg = comma; |
| 2077 | comma = split(arg); |
| 2078 | if (atoi_check(arg, &i)) |
| 2079 | { |
| 2080 | new->type = i; |
| 2081 | new->basename = NULL; |
| 2082 | } |
| 2083 | else |
| 2084 | { |
| 2085 | new->type = boottype++; |
| 2086 | new->basename = opt_string_alloc(arg); |
| 2087 | } |
| 2088 | |
| 2089 | if (comma && (new->server.s_addr = inet_addr(comma)) == (in_addr_t)-1) |
| 2090 | option = '?'; |
| 2091 | |
| 2092 | /* Order matters */ |
| 2093 | new->next = NULL; |
| 2094 | if (!daemon->pxe_services) |
| 2095 | daemon->pxe_services = new; |
| 2096 | else |
| 2097 | { |
| 2098 | struct pxe_service *s; |
| 2099 | for (s = daemon->pxe_services; s->next; s = s->next); |
| 2100 | s->next = new; |
| 2101 | } |
| 2102 | |
| 2103 | daemon->enable_pxe = 1; |
| 2104 | break; |
| 2105 | } |
| 2106 | } |
| 2107 | } |
| 2108 | |
| 2109 | option = '?'; |
| 2110 | break; |
| 2111 | } |
| 2112 | |
| 2113 | case '4': /* --dhcp-mac */ |
| 2114 | { |
| 2115 | if (!(comma = split(arg))) |
| 2116 | option = '?'; |
| 2117 | else |
| 2118 | { |
| 2119 | struct dhcp_mac *new = opt_malloc(sizeof(struct dhcp_mac)); |
| 2120 | if (strstr(arg, "net:") == arg) |
| 2121 | new->netid.net = opt_string_alloc(arg+4); |
| 2122 | else |
| 2123 | new->netid.net = opt_string_alloc(arg); |
| 2124 | unhide_metas(comma); |
| 2125 | new->hwaddr_len = parse_hex(comma, new->hwaddr, DHCP_CHADDR_MAX, &new->mask, &new->hwaddr_type); |
| 2126 | new->next = daemon->dhcp_macs; |
| 2127 | daemon->dhcp_macs = new; |
| 2128 | } |
| 2129 | } |
| 2130 | break; |
| 2131 | |
| 2132 | case 'U': /* --dhcp-vendorclass */ |
| 2133 | case 'j': /* --dhcp-userclass */ |
| 2134 | case LOPT_CIRCUIT: /* --dhcp-circuitid */ |
| 2135 | case LOPT_REMOTE: /* --dhcp-remoteid */ |
| 2136 | case LOPT_SUBSCR: /* --dhcp-subscrid */ |
| 2137 | { |
| 2138 | if (!(comma = split(arg))) |
| 2139 | option = '?'; |
| 2140 | else |
| 2141 | { |
| 2142 | char *p; |
| 2143 | int dig = 0; |
| 2144 | struct dhcp_vendor *new = opt_malloc(sizeof(struct dhcp_vendor)); |
| 2145 | if (strstr(arg, "net:") == arg) |
| 2146 | new->netid.net = opt_string_alloc(arg+4); |
| 2147 | else |
| 2148 | new->netid.net = opt_string_alloc(arg); |
| 2149 | /* check for hex string - must digits may include : must not have nothing else, |
| 2150 | only allowed for agent-options. */ |
| 2151 | for (p = comma; *p; p++) |
| 2152 | if (isxdigit((int)*p)) |
| 2153 | dig = 1; |
| 2154 | else if (*p != ':') |
| 2155 | break; |
| 2156 | unhide_metas(comma); |
| 2157 | if (option == 'U' || option == 'j' || *p || !dig) |
| 2158 | { |
| 2159 | new->len = strlen(comma); |
| 2160 | new->data = opt_malloc(new->len); |
| 2161 | memcpy(new->data, comma, new->len); |
| 2162 | } |
| 2163 | else |
| 2164 | { |
| 2165 | new->len = parse_hex(comma, (unsigned char *)comma, strlen(comma), NULL, NULL); |
| 2166 | new->data = opt_malloc(new->len); |
| 2167 | memcpy(new->data, comma, new->len); |
| 2168 | } |
| 2169 | |
| 2170 | switch (option) |
| 2171 | { |
| 2172 | case 'j': |
| 2173 | new->match_type = MATCH_USER; |
| 2174 | break; |
| 2175 | case 'U': |
| 2176 | new->match_type = MATCH_VENDOR; |
| 2177 | break; |
| 2178 | case LOPT_CIRCUIT: |
| 2179 | new->match_type = MATCH_CIRCUIT; |
| 2180 | break; |
| 2181 | case LOPT_REMOTE: |
| 2182 | new->match_type = MATCH_REMOTE; |
| 2183 | break; |
| 2184 | case LOPT_SUBSCR: |
| 2185 | new->match_type = MATCH_SUBSCRIBER; |
| 2186 | break; |
| 2187 | } |
| 2188 | new->next = daemon->dhcp_vendors; |
| 2189 | daemon->dhcp_vendors = new; |
| 2190 | } |
| 2191 | break; |
| 2192 | } |
| 2193 | |
| 2194 | case LOPT_ALTPORT: /* --dhcp-alternate-port */ |
| 2195 | if (!arg) |
| 2196 | { |
| 2197 | daemon->dhcp_server_port = DHCP_SERVER_ALTPORT; |
| 2198 | daemon->dhcp_client_port = DHCP_CLIENT_ALTPORT; |
| 2199 | } |
| 2200 | else |
| 2201 | { |
| 2202 | comma = split(arg); |
| 2203 | if (!atoi_check16(arg, &daemon->dhcp_server_port) || |
| 2204 | (comma && !atoi_check16(comma, &daemon->dhcp_client_port))) |
| 2205 | problem = _("invalid port number"); |
| 2206 | if (!comma) |
| 2207 | daemon->dhcp_client_port = daemon->dhcp_server_port+1; |
| 2208 | } |
| 2209 | break; |
| 2210 | |
| 2211 | case 'J': /* --dhcp-ignore */ |
| 2212 | case LOPT_NO_NAMES: /* --dhcp-ignore-names */ |
| 2213 | case LOPT_BROADCAST: /* --dhcp-broadcast */ |
| 2214 | case '3': /* --bootp-dynamic */ |
| 2215 | { |
| 2216 | struct dhcp_netid_list *new = opt_malloc(sizeof(struct dhcp_netid_list)); |
| 2217 | struct dhcp_netid *list = NULL; |
| 2218 | if (option == 'J') |
| 2219 | { |
| 2220 | new->next = daemon->dhcp_ignore; |
| 2221 | daemon->dhcp_ignore = new; |
| 2222 | } |
| 2223 | else if (option == LOPT_BROADCAST) |
| 2224 | { |
| 2225 | new->next = daemon->force_broadcast; |
| 2226 | daemon->force_broadcast = new; |
| 2227 | } |
| 2228 | else if (option == '3') |
| 2229 | { |
| 2230 | new->next = daemon->bootp_dynamic; |
| 2231 | daemon->bootp_dynamic = new; |
| 2232 | } |
| 2233 | else |
| 2234 | { |
| 2235 | new->next = daemon->dhcp_ignore_names; |
| 2236 | daemon->dhcp_ignore_names = new; |
| 2237 | } |
| 2238 | |
| 2239 | while (arg) { |
| 2240 | struct dhcp_netid *member = opt_malloc(sizeof(struct dhcp_netid)); |
| 2241 | comma = split(arg); |
| 2242 | member->next = list; |
| 2243 | list = member; |
| 2244 | if (strstr(arg, "net:") == arg) |
| 2245 | member->net = opt_string_alloc(arg+4); |
| 2246 | else |
| 2247 | member->net = opt_string_alloc(arg); |
| 2248 | arg = comma; |
| 2249 | } |
| 2250 | |
| 2251 | new->list = list; |
| 2252 | break; |
| 2253 | } |
| 2254 | #endif |
| 2255 | |
| 2256 | case 'V': /* --alias */ |
| 2257 | { |
| 2258 | char *dash, *a[3] = { NULL, NULL, NULL }; |
| 2259 | int k = 0; |
| 2260 | struct doctor *new = opt_malloc(sizeof(struct doctor)); |
| 2261 | new->next = daemon->doctors; |
| 2262 | daemon->doctors = new; |
| 2263 | new->mask.s_addr = 0xffffffff; |
| 2264 | new->end.s_addr = 0; |
| 2265 | |
| 2266 | if ((a[0] = arg)) |
| 2267 | for (k = 1; k < 3; k++) |
| 2268 | { |
| 2269 | if (!(a[k] = split(a[k-1]))) |
| 2270 | break; |
| 2271 | unhide_metas(a[k]); |
| 2272 | } |
| 2273 | |
| 2274 | dash = split_chr(a[0], '-'); |
| 2275 | |
| 2276 | if ((k < 2) || |
| 2277 | ((new->in.s_addr = inet_addr(a[0])) == (in_addr_t)-1) || |
| 2278 | ((new->out.s_addr = inet_addr(a[1])) == (in_addr_t)-1)) |
| 2279 | option = '?'; |
| 2280 | |
| 2281 | if (k == 3) |
| 2282 | new->mask.s_addr = inet_addr(a[2]); |
| 2283 | |
| 2284 | if (dash && |
| 2285 | ((new->end.s_addr = inet_addr(dash)) == (in_addr_t)-1 || |
| 2286 | !is_same_net(new->in, new->end, new->mask) || |
| 2287 | ntohl(new->in.s_addr) > ntohl(new->end.s_addr))) |
| 2288 | problem = _("invalid alias range"); |
| 2289 | |
| 2290 | break; |
| 2291 | } |
| 2292 | |
| 2293 | case LOPT_INTNAME: /* --interface-name */ |
| 2294 | { |
| 2295 | struct interface_name *new, **up; |
| 2296 | char *domain = NULL; |
| 2297 | |
| 2298 | comma = split(arg); |
| 2299 | |
| 2300 | if (!comma || !(domain = canonicalise_opt(arg))) |
| 2301 | problem = _("bad interface name"); |
| 2302 | |
| 2303 | new = opt_malloc(sizeof(struct interface_name)); |
| 2304 | new->next = NULL; |
| 2305 | /* Add to the end of the list, so that first name |
| 2306 | of an interface is used for PTR lookups. */ |
| 2307 | for (up = &daemon->int_names; *up; up = &((*up)->next)); |
| 2308 | *up = new; |
| 2309 | new->name = domain; |
| 2310 | new->intr = opt_string_alloc(comma); |
| 2311 | break; |
| 2312 | } |
| 2313 | |
| 2314 | case LOPT_CNAME: /* --cname */ |
| 2315 | { |
| 2316 | struct cname *new; |
| 2317 | |
| 2318 | if (!(comma = split(arg))) |
| 2319 | option = '?'; |
| 2320 | else |
| 2321 | { |
| 2322 | char *alias = canonicalise_opt(arg); |
| 2323 | char *target = canonicalise_opt(comma); |
| 2324 | |
| 2325 | if (!alias || !target) |
| 2326 | problem = _("bad CNAME"); |
| 2327 | else |
| 2328 | { |
| 2329 | for (new = daemon->cnames; new; new = new->next) |
| 2330 | if (hostname_isequal(new->alias, arg)) |
| 2331 | problem = _("duplicate CNAME"); |
| 2332 | new = opt_malloc(sizeof(struct cname)); |
| 2333 | new->next = daemon->cnames; |
| 2334 | daemon->cnames = new; |
| 2335 | new->alias = alias; |
| 2336 | new->target = target; |
| 2337 | } |
| 2338 | } |
| 2339 | break; |
| 2340 | } |
| 2341 | |
| 2342 | case LOPT_PTR: /* --ptr-record */ |
| 2343 | { |
| 2344 | struct ptr_record *new; |
| 2345 | char *dom, *target = NULL; |
| 2346 | |
| 2347 | comma = split(arg); |
| 2348 | |
| 2349 | if (!(dom = canonicalise_opt(arg)) || |
| 2350 | (comma && !(target = canonicalise_opt(comma)))) |
| 2351 | problem = _("bad PTR record"); |
| 2352 | else |
| 2353 | { |
| 2354 | new = opt_malloc(sizeof(struct ptr_record)); |
| 2355 | new->next = daemon->ptr; |
| 2356 | daemon->ptr = new; |
| 2357 | new->name = dom; |
| 2358 | new->ptr = target; |
| 2359 | } |
| 2360 | break; |
| 2361 | } |
| 2362 | |
| 2363 | case LOPT_NAPTR: /* --naptr-record */ |
| 2364 | { |
| 2365 | char *a[7] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL }; |
| 2366 | int k = 0; |
| 2367 | struct naptr *new; |
| 2368 | int order, pref; |
| 2369 | char *name, *replace = NULL; |
| 2370 | |
| 2371 | if ((a[0] = arg)) |
| 2372 | for (k = 1; k < 7; k++) |
| 2373 | if (!(a[k] = split(a[k-1]))) |
| 2374 | break; |
| 2375 | |
| 2376 | |
| 2377 | if (k < 6 || |
| 2378 | !(name = canonicalise_opt(a[0])) || |
| 2379 | !atoi_check16(a[1], &order) || |
| 2380 | !atoi_check16(a[2], &pref) || |
| 2381 | (k == 7 && !(replace = canonicalise_opt(a[6])))) |
| 2382 | problem = _("bad NAPTR record"); |
| 2383 | else |
| 2384 | { |
| 2385 | new = opt_malloc(sizeof(struct naptr)); |
| 2386 | new->next = daemon->naptr; |
| 2387 | daemon->naptr = new; |
| 2388 | new->name = name; |
| 2389 | new->flags = opt_string_alloc(a[3]); |
| 2390 | new->services = opt_string_alloc(a[4]); |
| 2391 | new->regexp = opt_string_alloc(a[5]); |
| 2392 | new->replace = replace; |
| 2393 | new->order = order; |
| 2394 | new->pref = pref; |
| 2395 | } |
| 2396 | break; |
| 2397 | } |
| 2398 | |
| 2399 | case 'Y': /* --txt-record */ |
| 2400 | { |
| 2401 | struct txt_record *new; |
| 2402 | unsigned char *p, *q; |
| 2403 | |
| 2404 | if ((comma = split(arg))) |
| 2405 | comma--; |
| 2406 | |
| 2407 | gen_prob = _("TXT record string too long"); |
| 2408 | |
| 2409 | if ((q = (unsigned char *)comma)) |
| 2410 | while (1) |
| 2411 | { |
| 2412 | size_t len; |
| 2413 | if ((p = (unsigned char *)strchr((char*)q+1, ','))) |
| 2414 | { |
| 2415 | if ((len = p - q - 1) > 255) |
| 2416 | option = '?'; |
| 2417 | *q = len; |
| 2418 | for (q = q+1; q < p; q++) |
| 2419 | *q = unhide_meta(*q); |
| 2420 | } |
| 2421 | else |
| 2422 | { |
| 2423 | if ((len = strlen((char *)q+1)) > 255) |
| 2424 | option = '?'; |
| 2425 | *q = len; |
| 2426 | for (q = q+1; *q; q++) |
| 2427 | *q = unhide_meta(*q); |
| 2428 | break; |
| 2429 | } |
| 2430 | } |
| 2431 | |
| 2432 | new = opt_malloc(sizeof(struct txt_record)); |
| 2433 | new->next = daemon->txt; |
| 2434 | daemon->txt = new; |
| 2435 | new->class = C_IN; |
| 2436 | if (comma) |
| 2437 | { |
| 2438 | new->len = q - ((unsigned char *)comma); |
| 2439 | new->txt = opt_malloc(new->len); |
| 2440 | memcpy(new->txt, comma, new->len); |
| 2441 | } |
| 2442 | else |
| 2443 | { |
| 2444 | static char empty[] = ""; |
| 2445 | new->len = 1; |
| 2446 | new->txt = empty; |
| 2447 | } |
| 2448 | |
| 2449 | /* ensure arg is terminated */ |
| 2450 | if (comma) |
| 2451 | *comma = 0; |
| 2452 | |
| 2453 | if (!(new->name = canonicalise_opt(arg))) |
| 2454 | { |
| 2455 | problem = _("bad TXT record"); |
| 2456 | break; |
| 2457 | } |
| 2458 | |
| 2459 | break; |
| 2460 | } |
| 2461 | |
| 2462 | case 'W': /* --srv-host */ |
| 2463 | { |
| 2464 | int port = 1, priority = 0, weight = 0; |
| 2465 | char *name, *target = NULL; |
| 2466 | struct mx_srv_record *new; |
| 2467 | |
| 2468 | comma = split(arg); |
| 2469 | |
| 2470 | if (!(name = canonicalise_opt(arg))) |
| 2471 | problem = _("bad SRV record"); |
| 2472 | |
| 2473 | if (comma) |
| 2474 | { |
| 2475 | arg = comma; |
| 2476 | comma = split(arg); |
| 2477 | if (!(target = canonicalise_opt(arg)) |
| 2478 | ) problem = _("bad SRV target"); |
| 2479 | |
| 2480 | if (comma) |
| 2481 | { |
| 2482 | arg = comma; |
| 2483 | comma = split(arg); |
| 2484 | if (!atoi_check16(arg, &port)) |
| 2485 | problem = _("invalid port number"); |
| 2486 | |
| 2487 | if (comma) |
| 2488 | { |
| 2489 | arg = comma; |
| 2490 | comma = split(arg); |
| 2491 | if (!atoi_check16(arg, &priority)) |
| 2492 | problem = _("invalid priority"); |
| 2493 | |
| 2494 | if (comma) |
| 2495 | { |
| 2496 | arg = comma; |
| 2497 | comma = split(arg); |
| 2498 | if (!atoi_check16(arg, &weight)) |
| 2499 | problem = _("invalid weight"); |
| 2500 | } |
| 2501 | } |
| 2502 | } |
| 2503 | } |
| 2504 | |
| 2505 | new = opt_malloc(sizeof(struct mx_srv_record)); |
| 2506 | new->next = daemon->mxnames; |
| 2507 | daemon->mxnames = new; |
| 2508 | new->issrv = 1; |
| 2509 | new->name = name; |
| 2510 | new->target = target; |
| 2511 | new->srvport = port; |
| 2512 | new->priority = priority; |
| 2513 | new->weight = weight; |
| 2514 | break; |
| 2515 | } |
| 2516 | |
| 2517 | default: |
| 2518 | return _("unsupported option (check that dnsmasq was compiled with DHCP/TFTP/DBus support)"); |
| 2519 | |
| 2520 | } |
| 2521 | |
| 2522 | if (problem) |
| 2523 | return problem; |
| 2524 | |
| 2525 | if (option == '?') |
| 2526 | return gen_prob; |
| 2527 | |
| 2528 | return NULL; |
| 2529 | } |
| 2530 | |
| 2531 | static void one_file(char *file, int nest, int hard_opt) |
| 2532 | { |
| 2533 | volatile int lineno = 0; |
| 2534 | int i, option; |
| 2535 | FILE *f; |
| 2536 | char *p, *arg, *start, *buff = daemon->namebuff; |
| 2537 | static struct fileread { |
| 2538 | dev_t dev; |
| 2539 | ino_t ino; |
| 2540 | struct fileread *next; |
| 2541 | } *filesread = NULL; |
| 2542 | struct stat statbuf; |
| 2543 | |
| 2544 | /* ignore repeated files. */ |
| 2545 | if (hard_opt == 0 && stat(file, &statbuf) == 0) |
| 2546 | { |
| 2547 | struct fileread *r; |
| 2548 | |
| 2549 | for (r = filesread; r; r = r->next) |
| 2550 | if (r->dev == statbuf.st_dev && r->ino == statbuf.st_ino) |
| 2551 | return; |
| 2552 | |
| 2553 | r = safe_malloc(sizeof(struct fileread)); |
| 2554 | r->next = filesread; |
| 2555 | filesread = r; |
| 2556 | r->dev = statbuf.st_dev; |
| 2557 | r->ino = statbuf.st_ino; |
| 2558 | } |
| 2559 | |
| 2560 | if (nest > 20) |
| 2561 | die(_("files nested too deep in %s"), file, EC_BADCONF); |
| 2562 | |
| 2563 | if (!(f = fopen(file, "r"))) |
| 2564 | { |
| 2565 | if (errno == ENOENT && nest == 0) |
| 2566 | return; /* No conffile, all done. */ |
| 2567 | else |
| 2568 | { |
| 2569 | char *str = _("cannot read %s: %s"); |
| 2570 | if (hard_opt != 0) |
| 2571 | { |
| 2572 | my_syslog(LOG_ERR, str, file, strerror(errno)); |
| 2573 | return; |
| 2574 | } |
| 2575 | else |
| 2576 | die(str, file, EC_FILE); |
| 2577 | } |
| 2578 | } |
| 2579 | |
| 2580 | while (fgets(buff, MAXDNAME, f)) |
| 2581 | { |
| 2582 | int white; |
| 2583 | unsigned int lastquote; |
| 2584 | char *errmess; |
| 2585 | |
| 2586 | /* Memory allocation failure longjmps here if mem_recover == 1 */ |
| 2587 | if (hard_opt) |
| 2588 | { |
| 2589 | if (setjmp(mem_jmp)) |
| 2590 | continue; |
| 2591 | mem_recover = 1; |
| 2592 | } |
| 2593 | |
| 2594 | lineno++; |
| 2595 | errmess = NULL; |
| 2596 | |
| 2597 | /* Implement quotes, inside quotes we allow \\ \" \n and \t |
| 2598 | metacharacters get hidden also strip comments */ |
| 2599 | |
| 2600 | for (white = 1, lastquote = 0, p = buff; *p; p++) |
| 2601 | { |
| 2602 | if (*p == '"') |
| 2603 | { |
| 2604 | memmove(p, p+1, strlen(p+1)+1); |
| 2605 | for(; *p && *p != '"'; p++) |
| 2606 | { |
| 2607 | if (*p == '\\' && strchr("\"tnebr\\", p[1])) |
| 2608 | { |
| 2609 | if (p[1] == 't') |
| 2610 | p[1] = '\t'; |
| 2611 | else if (p[1] == 'n') |
| 2612 | p[1] = '\n'; |
| 2613 | else if (p[1] == 'b') |
| 2614 | p[1] = '\b'; |
| 2615 | else if (p[1] == 'r') |
| 2616 | p[1] = '\r'; |
| 2617 | else if (p[1] == 'e') /* escape */ |
| 2618 | p[1] = '\033'; |
| 2619 | memmove(p, p+1, strlen(p+1)+1); |
| 2620 | } |
| 2621 | *p = hide_meta(*p); |
| 2622 | } |
| 2623 | if (*p == '"') |
| 2624 | { |
| 2625 | memmove(p, p+1, strlen(p+1)+1); |
| 2626 | lastquote = p - buff; |
| 2627 | } |
| 2628 | else |
| 2629 | { |
| 2630 | errmess = _("missing \""); |
| 2631 | goto oops; |
| 2632 | } |
| 2633 | } |
| 2634 | |
| 2635 | if (white && *p == '#') |
| 2636 | { |
| 2637 | *p = 0; |
| 2638 | break; |
| 2639 | } |
| 2640 | white = isspace((int)unhide_meta(*p)); |
| 2641 | } |
| 2642 | |
| 2643 | /* fgets gets end of line char too. */ |
| 2644 | while (strlen(buff) > lastquote && isspace((int)unhide_meta(buff[strlen(buff)-1]))) |
| 2645 | buff[strlen(buff)-1] = 0; |
| 2646 | |
| 2647 | if (*buff == 0) |
| 2648 | continue; |
| 2649 | |
| 2650 | if (hard_opt != 0) |
| 2651 | arg = buff; |
| 2652 | else if ((p=strchr(buff, '='))) |
| 2653 | { |
| 2654 | /* allow spaces around "=" */ |
| 2655 | arg = p+1; |
| 2656 | for (; p >= buff && (isspace((int)*p) || *p == '='); p--) |
| 2657 | *p = 0; |
| 2658 | } |
| 2659 | else |
| 2660 | arg = NULL; |
| 2661 | |
| 2662 | if (hard_opt != 0) |
| 2663 | option = hard_opt; |
| 2664 | else |
| 2665 | { |
| 2666 | /* skip leading space */ |
| 2667 | for (start = buff; *start && isspace((int)*start); start++); |
| 2668 | |
| 2669 | for (option = 0, i = 0; opts[i].name; i++) |
| 2670 | if (strcmp(opts[i].name, start) == 0) |
| 2671 | { |
| 2672 | option = opts[i].val; |
| 2673 | break; |
| 2674 | } |
| 2675 | |
| 2676 | if (!option) |
| 2677 | errmess = _("bad option"); |
| 2678 | else if (opts[i].has_arg == 0 && arg) |
| 2679 | errmess = _("extraneous parameter"); |
| 2680 | else if (opts[i].has_arg == 1 && !arg) |
| 2681 | errmess = _("missing parameter"); |
| 2682 | } |
| 2683 | |
| 2684 | if (!errmess) |
| 2685 | { |
| 2686 | if (arg) |
| 2687 | for (; isspace((int)*arg); arg++); |
| 2688 | |
| 2689 | errmess = one_opt(option, arg, _("error"), nest + 1); |
| 2690 | } |
| 2691 | |
| 2692 | if (errmess) |
| 2693 | { |
| 2694 | oops: |
| 2695 | sprintf(buff, _("%s at line %d of %%s"), errmess, lineno); |
| 2696 | if (hard_opt != 0) |
| 2697 | my_syslog(LOG_ERR, buff, file); |
| 2698 | else |
| 2699 | die(buff, file, EC_BADCONF); |
| 2700 | } |
| 2701 | } |
| 2702 | |
| 2703 | mem_recover = 1; |
| 2704 | fclose(f); |
| 2705 | } |
| 2706 | |
| 2707 | #ifdef HAVE_DHCP |
| 2708 | void reread_dhcp(void) |
| 2709 | { |
| 2710 | if (daemon->dhcp_hosts_file) |
| 2711 | { |
| 2712 | struct dhcp_config *configs, *cp, **up; |
| 2713 | |
| 2714 | /* remove existing... */ |
| 2715 | for (up = &daemon->dhcp_conf, configs = daemon->dhcp_conf; configs; configs = cp) |
| 2716 | { |
| 2717 | cp = configs->next; |
| 2718 | |
| 2719 | if (configs->flags & CONFIG_BANK) |
| 2720 | { |
| 2721 | struct hwaddr_config *mac, *tmp; |
| 2722 | |
| 2723 | for (mac = configs->hwaddr; mac; mac = tmp) |
| 2724 | { |
| 2725 | tmp = mac->next; |
| 2726 | free(mac); |
| 2727 | } |
| 2728 | if (configs->flags & CONFIG_CLID) |
| 2729 | free(configs->clid); |
| 2730 | if (configs->flags & CONFIG_NETID) |
| 2731 | free(configs->netid.net); |
| 2732 | if (configs->flags & CONFIG_NAME) |
| 2733 | free(configs->hostname); |
| 2734 | |
| 2735 | |
| 2736 | *up = configs->next; |
| 2737 | free(configs); |
| 2738 | } |
| 2739 | else |
| 2740 | up = &configs->next; |
| 2741 | } |
| 2742 | |
| 2743 | one_file(daemon->dhcp_hosts_file, 1, LOPT_BANK); |
| 2744 | my_syslog(MS_DHCP | LOG_INFO, _("read %s"), daemon->dhcp_hosts_file); |
| 2745 | } |
| 2746 | |
| 2747 | if (daemon->dhcp_opts_file) |
| 2748 | { |
| 2749 | struct dhcp_opt *opts, *cp, **up; |
| 2750 | struct dhcp_netid *id, *next; |
| 2751 | |
| 2752 | for (up = &daemon->dhcp_opts, opts = daemon->dhcp_opts; opts; opts = cp) |
| 2753 | { |
| 2754 | cp = opts->next; |
| 2755 | |
| 2756 | if (opts->flags & DHOPT_BANK) |
| 2757 | { |
| 2758 | if ((opts->flags & DHOPT_VENDOR)) |
| 2759 | free(opts->u.vendor_class); |
| 2760 | free(opts->val); |
| 2761 | for (id = opts->netid; id; id = next) |
| 2762 | { |
| 2763 | next = id->next; |
| 2764 | free(id->net); |
| 2765 | free(id); |
| 2766 | } |
| 2767 | *up = opts->next; |
| 2768 | free(opts); |
| 2769 | } |
| 2770 | else |
| 2771 | up = &opts->next; |
| 2772 | } |
| 2773 | |
| 2774 | one_file(daemon->dhcp_opts_file, 1, LOPT_OPTS); |
| 2775 | my_syslog(MS_DHCP | LOG_INFO, _("read %s"), daemon->dhcp_opts_file); |
| 2776 | } |
| 2777 | } |
| 2778 | #endif |
| 2779 | |
| 2780 | void read_opts(int argc, char **argv, char *compile_opts) |
| 2781 | { |
| 2782 | char *buff = opt_malloc(MAXDNAME); |
| 2783 | int option, nest = 0, testmode = 0; |
| 2784 | char *errmess, *arg, *conffile = CONFFILE; |
| 2785 | |
| 2786 | opterr = 0; |
| 2787 | |
| 2788 | daemon = opt_malloc(sizeof(struct daemon)); |
| 2789 | memset(daemon, 0, sizeof(struct daemon)); |
| 2790 | daemon->namebuff = buff; |
| 2791 | |
| 2792 | /* Set defaults - everything else is zero or NULL */ |
| 2793 | daemon->cachesize = CACHESIZ; |
| 2794 | daemon->ftabsize = FTABSIZ; |
| 2795 | daemon->port = NAMESERVER_PORT; |
| 2796 | daemon->dhcp_client_port = DHCP_CLIENT_PORT; |
| 2797 | daemon->dhcp_server_port = DHCP_SERVER_PORT; |
| 2798 | daemon->default_resolv.is_default = 1; |
| 2799 | daemon->default_resolv.name = RESOLVFILE; |
| 2800 | daemon->resolv_files = &daemon->default_resolv; |
| 2801 | daemon->username = CHUSER; |
| 2802 | daemon->runfile = RUNFILE; |
| 2803 | daemon->dhcp_max = MAXLEASES; |
| 2804 | daemon->tftp_max = TFTP_MAX_CONNECTIONS; |
| 2805 | daemon->edns_pktsz = EDNS_PKTSZ; |
| 2806 | daemon->log_fac = -1; |
| 2807 | add_txt("version.bind", "dnsmasq-" VERSION ); |
| 2808 | add_txt("authors.bind", "Simon Kelley"); |
| 2809 | add_txt("copyright.bind", COPYRIGHT); |
| 2810 | |
| 2811 | while (1) |
| 2812 | { |
| 2813 | #ifdef HAVE_GETOPT_LONG |
| 2814 | option = getopt_long(argc, argv, OPTSTRING, opts, NULL); |
| 2815 | #else |
| 2816 | option = getopt(argc, argv, OPTSTRING); |
| 2817 | #endif |
| 2818 | |
| 2819 | if (option == -1) |
| 2820 | break; |
| 2821 | |
| 2822 | /* Copy optarg so that argv doesn't get changed */ |
| 2823 | if (optarg) |
| 2824 | { |
| 2825 | strncpy(buff, optarg, MAXDNAME); |
| 2826 | buff[MAXDNAME-1] = 0; |
| 2827 | arg = buff; |
| 2828 | } |
| 2829 | else |
| 2830 | arg = NULL; |
| 2831 | |
| 2832 | /* command-line only stuff */ |
| 2833 | if (option == LOPT_TEST) |
| 2834 | testmode = 1; |
| 2835 | else if (option == 'w') |
| 2836 | { |
| 2837 | if (argc != 3 || strcmp(argv[2], "dhcp") != 0) |
| 2838 | do_usage(); |
| 2839 | #ifdef HAVE_DHCP |
| 2840 | else |
| 2841 | display_opts(); |
| 2842 | #endif |
| 2843 | exit(0); |
| 2844 | } |
| 2845 | else if (option == 'v') |
| 2846 | { |
| 2847 | printf(_("Dnsmasq version %s %s\n"), VERSION, COPYRIGHT); |
| 2848 | printf(_("Compile time options %s\n\n"), compile_opts); |
| 2849 | printf(_("This software comes with ABSOLUTELY NO WARRANTY.\n")); |
| 2850 | printf(_("Dnsmasq is free software, and you are welcome to redistribute it\n")); |
| 2851 | printf(_("under the terms of the GNU General Public License, version 2 or 3.\n")); |
| 2852 | exit(0); |
| 2853 | } |
| 2854 | else if (option == 'C') |
| 2855 | { |
| 2856 | conffile = opt_string_alloc(arg); |
| 2857 | nest++; |
| 2858 | } |
| 2859 | else |
| 2860 | { |
| 2861 | #ifdef HAVE_GETOPT_LONG |
| 2862 | errmess = one_opt(option, arg, _("try --help"), 0); |
| 2863 | #else |
| 2864 | errmess = one_opt(option, arg, _("try -w"), 0); |
| 2865 | #endif |
| 2866 | if (errmess) |
| 2867 | die(_("bad command line options: %s"), errmess, EC_BADCONF); |
| 2868 | } |
| 2869 | } |
| 2870 | |
| 2871 | if (conffile) |
| 2872 | one_file(conffile, nest, 0); |
| 2873 | |
| 2874 | /* port might not be known when the address is parsed - fill in here */ |
| 2875 | if (daemon->servers) |
| 2876 | { |
| 2877 | struct server *tmp; |
| 2878 | for (tmp = daemon->servers; tmp; tmp = tmp->next) |
| 2879 | if (!(tmp->flags & SERV_HAS_SOURCE)) |
| 2880 | { |
| 2881 | if (tmp->source_addr.sa.sa_family == AF_INET) |
| 2882 | tmp->source_addr.in.sin_port = htons(daemon->query_port); |
| 2883 | #ifdef HAVE_IPV6 |
| 2884 | else if (tmp->source_addr.sa.sa_family == AF_INET6) |
| 2885 | tmp->source_addr.in6.sin6_port = htons(daemon->query_port); |
| 2886 | #endif |
| 2887 | } |
| 2888 | } |
| 2889 | |
| 2890 | if (daemon->if_addrs) |
| 2891 | { |
| 2892 | struct iname *tmp; |
| 2893 | for(tmp = daemon->if_addrs; tmp; tmp = tmp->next) |
| 2894 | if (tmp->addr.sa.sa_family == AF_INET) |
| 2895 | tmp->addr.in.sin_port = htons(daemon->port); |
| 2896 | #ifdef HAVE_IPV6 |
| 2897 | else if (tmp->addr.sa.sa_family == AF_INET6) |
| 2898 | tmp->addr.in6.sin6_port = htons(daemon->port); |
| 2899 | #endif /* IPv6 */ |
| 2900 | } |
| 2901 | |
| 2902 | /* only one of these need be specified: the other defaults to the host-name */ |
| 2903 | if ((daemon->options & OPT_LOCALMX) || daemon->mxnames || daemon->mxtarget) |
| 2904 | { |
| 2905 | struct mx_srv_record *mx; |
| 2906 | |
| 2907 | if (gethostname(buff, MAXDNAME) == -1) |
| 2908 | die(_("cannot get host-name: %s"), NULL, EC_MISC); |
| 2909 | |
| 2910 | for (mx = daemon->mxnames; mx; mx = mx->next) |
| 2911 | if (!mx->issrv && hostname_isequal(mx->name, buff)) |
| 2912 | break; |
| 2913 | |
| 2914 | if ((daemon->mxtarget || (daemon->options & OPT_LOCALMX)) && !mx) |
| 2915 | { |
| 2916 | mx = opt_malloc(sizeof(struct mx_srv_record)); |
| 2917 | mx->next = daemon->mxnames; |
| 2918 | mx->issrv = 0; |
| 2919 | mx->target = NULL; |
| 2920 | mx->name = opt_string_alloc(buff); |
| 2921 | daemon->mxnames = mx; |
| 2922 | } |
| 2923 | |
| 2924 | if (!daemon->mxtarget) |
| 2925 | daemon->mxtarget = opt_string_alloc(buff); |
| 2926 | |
| 2927 | for (mx = daemon->mxnames; mx; mx = mx->next) |
| 2928 | if (!mx->issrv && !mx->target) |
| 2929 | mx->target = daemon->mxtarget; |
| 2930 | } |
| 2931 | |
| 2932 | if (!(daemon->options & OPT_NO_RESOLV) && |
| 2933 | daemon->resolv_files && |
| 2934 | daemon->resolv_files->next && |
| 2935 | (daemon->options & OPT_NO_POLL)) |
| 2936 | die(_("only one resolv.conf file allowed in no-poll mode."), NULL, EC_BADCONF); |
| 2937 | |
| 2938 | if (daemon->options & OPT_RESOLV_DOMAIN) |
| 2939 | { |
| 2940 | char *line; |
| 2941 | FILE *f; |
| 2942 | |
| 2943 | if ((daemon->options & OPT_NO_RESOLV) || |
| 2944 | !daemon->resolv_files || |
| 2945 | (daemon->resolv_files)->next) |
| 2946 | die(_("must have exactly one resolv.conf to read domain from."), NULL, EC_BADCONF); |
| 2947 | |
| 2948 | if (!(f = fopen((daemon->resolv_files)->name, "r"))) |
| 2949 | die(_("failed to read %s: %s"), (daemon->resolv_files)->name, EC_FILE); |
| 2950 | |
| 2951 | while ((line = fgets(buff, MAXDNAME, f))) |
| 2952 | { |
| 2953 | char *token = strtok(line, " \t\n\r"); |
| 2954 | |
| 2955 | if (!token || strcmp(token, "search") != 0) |
| 2956 | continue; |
| 2957 | |
| 2958 | if ((token = strtok(NULL, " \t\n\r")) && |
| 2959 | (daemon->domain_suffix = canonicalise_opt(token))) |
| 2960 | break; |
| 2961 | } |
| 2962 | |
| 2963 | fclose(f); |
| 2964 | |
| 2965 | if (!daemon->domain_suffix) |
| 2966 | die(_("no search directive found in %s"), (daemon->resolv_files)->name, EC_MISC); |
| 2967 | } |
| 2968 | |
| 2969 | if (daemon->domain_suffix) |
| 2970 | { |
| 2971 | /* add domain for any srv record without one. */ |
| 2972 | struct mx_srv_record *srv; |
| 2973 | |
| 2974 | for (srv = daemon->mxnames; srv; srv = srv->next) |
| 2975 | if (srv->issrv && |
| 2976 | strchr(srv->name, '.') && |
| 2977 | strchr(srv->name, '.') == strrchr(srv->name, '.')) |
| 2978 | { |
| 2979 | strcpy(buff, srv->name); |
| 2980 | strcat(buff, "."); |
| 2981 | strcat(buff, daemon->domain_suffix); |
| 2982 | free(srv->name); |
| 2983 | srv->name = opt_string_alloc(buff); |
| 2984 | } |
| 2985 | } |
| 2986 | else if (daemon->options & OPT_DHCP_FQDN) |
| 2987 | die(_("there must be a default domain when --dhcp-fqdn is set"), NULL, EC_BADCONF); |
| 2988 | |
| 2989 | if (testmode) |
| 2990 | { |
| 2991 | fprintf(stderr, "dnsmasq: %s.\n", _("syntax check OK")); |
| 2992 | exit(0); |
| 2993 | } |
| 2994 | } |