src/main.c

   1 /* main.c - srvx
   2  * Copyright 2000-2004 srvx Development Team
   3  *
   4  * This file is part of srvx.
   5  *
   6  * srvx is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with srvx; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
  19  */
  20
  21 #define PID_FILE "x3.pid"
  22
  23 #include "conf.h"
  24 #include "gline.h"
  25 #include "ioset.h"
  26 #include "modcmd.h"
  27 #include "saxdb.h"
  28 #include "sendmail.h"
  29 #include "timeq.h"
  30
  31 #include "chanserv.h"
  32 #include "global.h"
  33 #include "modules.h"
  34 #include "opserv.h"
  35
  36 #ifdef HAVE_GETOPT_H
  37 #include <getopt.h>
  38 #else
  39 #include "getopt.h"
  40 #endif
  41 #ifdef HAVE_SYS_RESOURCE_H
  42 #include <sys/resource.h>
  43 #endif
  44 #ifdef HAVE_NETINET_IN_H
  45 #include <netinet/in.h>
  46 #endif
  47 #ifdef HAVE_SYS_SOCKET_H
  48 #include <sys/socket.h>
  49 #endif
  50 #ifdef HAVE_SYS_WAIT_H
  51 #include <sys/wait.h>
  52 #endif
  53
  54 #ifndef SIGCHLD
  55 #define SIGCHLD SIGCLD
  56 #endif
  57
  58 extern FILE *replay_file;
  59
  60 time_t boot_time, burst_begin, now;
  61 unsigned long burst_length;
  62 struct log_type *MAIN_LOG;
  63
  64 int quit_services, max_cycles;
  65
  66 char *services_config = "x3.conf";
  67
  68 char **services_argv;
  69 int services_argc;
  70
  71 struct cManagerNode cManager;
  72
  73 struct policer_params *oper_policer_params, *luser_policer_params, *god_policer_params;
  74
  75 static const struct message_entry msgtab[] = {
  76     { "MSG_NONE", "None" },
  77     { "MSG_ON", "On" },
  78     { "MSG_OFF", "Off" },
  79     { "MSG_NEVER", "Never" },
  80     { "MSG_SERVICE_IMMUNE", "$b%s$b may not be kicked, killed, banned, or deopped." },
  81     { "MSG_SERVICE_PRIVILEGED", "$b%s$b is a privileged service." },
  82     { "MSG_NOT_A_SERVICE", "$b%s$b is not a service bot." },
  83     { "MSG_COMMAND_UNKNOWN", "$b%s$b is an unknown command." },
  84     { "MSG_COMMAND_PRIVILEGED", "$b%s$b is a privileged command." },
  85     { "MSG_COMMAND_DISABLED", "$b%s$b is a disabled command." },
  86     { "MSG_SETTING_PRIVILEGED", "$b%s$b is a privileged setting." },
  87     { "MSG_AUTHENTICATE", "You must first authenticate with $b$N$b." },
  88     { "MSG_USER_AUTHENTICATE", "%s must first authenticate with $b$N$b." },
  89     { "MSG_SET_EMAIL_ADDR", "You must first set your account's email address.  (Contact network staff if you cannot auth to your account.)" },
  90     { "MSG_HANDLE_UNKNOWN", "Account $b%s$b has not been registered." },
  91     { "MSG_NICK_UNKNOWN", "User with nick $b%s$b does not exist." },
  92     { "MSG_CHANNEL_UNKNOWN", "Channel with name $b%s$b does not exist." },
  93     { "MSG_SERVER_UNKNOWN", "Server with name $b%s$b does not exist or is not linked." },
  94     { "MSG_MODULE_UNKNOWN", "No module has been registered with name $b%s$b." },
  95     { "MSG_INVALID_MODES", "$b%s$b is an invalid set of channel modes." },
  96     { "MSG_INVALID_GLINE", "Invalid G-line '%s'." },
  97     { "MSG_INVALID_DURATION", "Invalid time span '%s'." },
  98     { "MSG_NOT_TARGET_NAME", "You must provide the name of a channel or user." },
  99     { "MSG_NOT_CHANNEL_NAME", "You must provide a valid channel name." },
 100     { "MSG_INVALID_CHANNEL", "You must provide the name of a channel that exists." },
 101     { "MSG_CHANNEL_ABSENT", "You aren't currently in $b%s$b." },
 102     { "MSG_CHANNEL_USER_ABSENT", "$b%s$b isn't currently in $b%s$b." },
 103     { "MSG_MISSING_PARAMS", "$b%s$b requires more parameters." },
 104     { "MSG_DEPRECATED_COMMAND", "The $b%s$b command has been deprecated, and will be removed in the future; please use $b%s$b instead." },
 105     { "MSG_OPER_SUSPENDED", "Your $b$O$b access has been suspended." },
 106     { "MSG_USER_OUTRANKED", "$b%s$b outranks you (command has no effect)." },
 107     { "MSG_STUPID_ACCESS_CHANGE", "Please ask someone $belse$b to demote you." },
 108     { "MSG_NO_SEARCH_ACCESS", "You do not have enough access to search based on $b%s$b." },
 109     { "MSG_INVALID_CRITERIA", "$b%s$b is an invalid search criteria." },
 110     { "MSG_MATCH_COUNT", "Found $b%u$b matches." },
 111     { "MSG_NO_MATCHES", "Nothing matched the criteria of your search." },
 112     { "MSG_TOPIC_UNKNOWN", "No help on that topic." },
 113     { "MSG_INVALID_BINARY", "$b%s$b is an invalid binary value." },
 114     { "MSG_INTERNAL_FAILURE", "Your command could not be processed due to an internal failure." },
 115     { "MSG_DB_UNKNOWN", "I do not know of a database named %s." },
 116     { "MSG_DB_IS_MONDO", "Database %s is in the \"mondo\" database and cannot be written separately." },
 117     { "MSG_DB_WRITE_ERROR", "Error while writing database %s." },
 118     { "MSG_DB_WROTE_DB", "Wrote database %s (in "FMT_TIME_T".%06lu seconds)." },
 119     { "MSG_DB_WROTE_ALL", "Wrote all databases (in "FMT_TIME_T".%06lu seconds)." },
 120     { "MSG_AND", "and" },
 121     { "MSG_0_SECONDS", "0 seconds" },
 122     { "MSG_YEAR", "year" },
 123     { "MSG_YEARS", "years" },
 124     { "MSG_WEEK", "week" },
 125     { "MSG_WEEKS", "weeks" },
 126     { "MSG_DAY", "day" },
 127     { "MSG_DAYS", "days" },
 128     { "MSG_HOUR", "hour" },
 129     { "MSG_HOURS", "hours" },
 130     { "MSG_MINUTE", "minute" },
 131     { "MSG_MINUTES", "minutes" },
 132     { "MSG_SECOND", "second" },
 133     { "MSG_SECONDS", "seconds" },
 134     { NULL, NULL }
 135 };
 136
 137 void uplink_select(char *name);
 138
 139 static int
 140 uplink_insert(const char *key, void *data, UNUSED_ARG(void *extra))
 141 {
 142     struct uplinkNode *uplink = malloc(sizeof(struct uplinkNode));
 143     struct record_data *rd = data;
 144     int enabled = 1;
 145     char *str;
 146     struct sockaddr_in *sin;
 147     unsigned long addr;
 148
 149     if(!uplink)
 150     {
 151         return 0;
 152     }
 153
 154     uplink->name = (char *)key;
 155     uplink->host = database_get_data(rd->d.object, "address", RECDB_QSTRING);
 156
 157     str = database_get_data(rd->d.object, "port", RECDB_QSTRING);
 158     uplink->port = str ? atoi(str) : 6667;
 159     uplink->password = database_get_data(rd->d.object, "password", RECDB_QSTRING);
 160     uplink->their_password = database_get_data(rd->d.object, "uplink_password", RECDB_QSTRING);
 161
 162     str = database_get_data(rd->d.object, "enabled", RECDB_QSTRING);
 163     if(str)
 164     {
 165         enabled = atoi(str) ? 1 : 0;
 166     }
 167
 168     cManager.enabled += enabled;
 169
 170     str = database_get_data(rd->d.object, "max_tries", RECDB_QSTRING);
 171     uplink->max_tries = str ? atoi(str) : 3;
 172     uplink->flags = enabled ? 0 : UPLINK_UNAVAILABLE;
 173     uplink->state = DISCONNECTED;
 174     uplink->tries = 0;
 175
 176     str = database_get_data(rd->d.object, "bind_address", RECDB_QSTRING);
 177     uplink->bind_addr_len = sizeof(*sin);
 178     if (str && getipbyname(str, &addr))
 179     {
 180         sin = calloc(1, uplink->bind_addr_len);
 181         sin->sin_family = AF_INET;
 182         sin->sin_addr.s_addr = addr;
 183         uplink->bind_addr = sin;
 184     }
 185     else
 186     {
 187         uplink->bind_addr = NULL;
 188         uplink->bind_addr_len = 0;
 189     }
 190
 191     uplink->next = cManager.uplinks;
 192     uplink->prev = NULL;
 193
 194     if(cManager.uplinks)
 195     {
 196         cManager.uplinks->prev = uplink;
 197     }
 198
 199     cManager.uplinks = uplink;
 200
 201     /* If the configuration is being reloaded, set the current uplink
 202        to the reloaded equivalent, if possible. */
 203     if(cManager.uplink
 204        && enabled
 205        && !irccasecmp(uplink->host, cManager.uplink->host)
 206        && uplink->port == cManager.uplink->port)
 207     {
 208         uplink->state = cManager.uplink->state;
 209         uplink->tries = cManager.uplink->tries;
 210         cManager.uplink = uplink;
 211     }
 212
 213     return 0;
 214 }
 215
 216 void
 217 uplink_compile(void)
 218 {
 219     const char *cycles;
 220     dict_t conf_node;
 221     struct uplinkNode *oldUplinks = NULL, *oldUplink = NULL;
 222
 223     /* Save the old uplinks, we'll remove them later. */
 224     oldUplink = cManager.uplink;
 225     oldUplinks = cManager.uplinks;
 226
 227     cycles = conf_get_data("server/max_cycles", RECDB_QSTRING);
 228     max_cycles = cycles ? atoi(cycles) : 30;
 229     if(!(conf_node = conf_get_data("uplinks", RECDB_OBJECT)))
 230     {
 231         log_module(MAIN_LOG, LOG_FATAL, "No uplinks configured; giving up.");
 232         exit(1);
 233     }
 234
 235     cManager.enabled = 0;
 236     dict_foreach(conf_node, uplink_insert, NULL);
 237
 238     /* Remove the old uplinks, if any. It doesn't matter if oldUplink (below)
 239        is a reference to one of these, because it won't get dereferenced. */
 240     if(oldUplinks)
 241     {
 242         struct uplinkNode *uplink, *next;
 243
 244         oldUplinks->prev->next = NULL;
 245
 246         for(uplink = oldUplinks; uplink; uplink = next)
 247         {
 248             next = uplink->next;
 249             free(uplink->bind_addr);
 250             free(uplink);
 251         }
 252     }
 253
 254     /* If the uplink hasn't changed, it's either NULL or pointing at
 255        an uplink that was just deleted, select a new one. */
 256     if(cManager.uplink == oldUplink)
 257     {
 258         if(oldUplink)
 259         {
 260             irc_squit(self, "Uplinks updated; selecting new uplink.", NULL);
 261         }
 262
 263         cManager.uplink = NULL;
 264         uplink_select(NULL);
 265     }
 266 }
 267
 268 struct uplinkNode *
 269 uplink_find(char *name)
 270 {
 271     struct uplinkNode *uplink;
 272
 273     if(!cManager.enabled || !cManager.uplinks)
 274     {
 275         return NULL;
 276     }
 277
 278     for(uplink = cManager.uplinks; uplink; uplink = uplink->next)
 279     {
 280         if(!strcasecmp(uplink->name, name))
 281         {
 282             return uplink;
 283         }
 284     }
 285
 286     return NULL;
 287 }
 288
 289 void
 290 uplink_select(char *name)
 291 {
 292     struct uplinkNode *start, *uplink, *next;
 293     int stop;
 294
 295     if(!cManager.enabled || !cManager.uplinks)
 296     {
 297         log_module(MAIN_LOG, LOG_FATAL, "No uplinks enabled; giving up.");
 298         exit(1);
 299     }
 300
 301     if(!cManager.uplink)
 302     {
 303         start = cManager.uplinks;
 304     }
 305     else
 306     {
 307         start = cManager.uplink->next;
 308         if(!start)
 309         {
 310             start = cManager.uplinks;
 311         }
 312     }
 313
 314     stop = 0;
 315     for(uplink = start; uplink; uplink = next)
 316     {
 317         next = uplink->next ? uplink->next : cManager.uplinks;
 318
 319         if(stop)
 320         {
 321             uplink = NULL;
 322             break;
 323         }
 324
 325         /* We've wrapped around the list. */
 326         if(next == start)
 327         {
 328             sleep((cManager.cycles >> 1) * 5);
 329             cManager.cycles++;
 330
 331             if(max_cycles && (cManager.cycles >= max_cycles))
 332             {
 333                 log_module(MAIN_LOG, LOG_FATAL, "Maximum uplink list cycles exceeded; giving up.");
 334                 exit(1);
 335             }
 336
 337             /* Give the uplink currently in 'uplink' consideration,
 338                and if not selected, break on the next iteration. */
 339             stop = 1;
 340         }
 341
 342         /* Skip bad uplinks. */
 343         if(uplink->flags & UPLINK_UNAVAILABLE)
 344         {
 345             continue;
 346         }
 347
 348         if(name && irccasecmp(uplink->name, name))
 349         {
 350             /* If we were told to connect to a specific uplink, don't stop
 351                until we find it.
 352             */
 353             continue;
 354         }
 355
 356         /* It would be possible to track uplink health through a variety
 357            of statistics and only break on the best uplink. For now, break
 358            on the first available one.
 359         */
 360
 361         break;
 362     }
 363
 364     if(!uplink)
 365     {
 366         /* We are shit outta luck if every single uplink has been passed
 367            over. Use the current uplink if possible. */
 368         if(!cManager.uplink || cManager.uplink->flags & UPLINK_UNAVAILABLE)
 369         {
 370             log_module(MAIN_LOG, LOG_FATAL, "All available uplinks exhausted; giving up.");
 371             exit(1);
 372         }
 373
 374         return;
 375     }
 376
 377     cManager.uplink = uplink;
 378 }
 379
 380 int
 381 uplink_connect(void)
 382 {
 383     struct uplinkNode *uplink = cManager.uplink;
 384
 385     if(uplink->state != DISCONNECTED)
 386     {
 387         return 0;
 388     }
 389
 390     if(uplink->flags & UPLINK_UNAVAILABLE)
 391     {
 392         uplink_select(NULL);
 393         uplink = cManager.uplink;
 394     }
 395
 396     if(uplink->tries)
 397     {
 398         /* This delay could scale with the number of tries. */
 399         sleep(2);
 400     }
 401
 402     if(!create_socket_client(uplink))
 403     {
 404         if(uplink->max_tries && (uplink->tries >= uplink->max_tries))
 405         {
 406             /* This is a bad uplink, move on. */
 407             uplink->flags |= UPLINK_UNAVAILABLE;
 408             uplink_select(NULL);
 409         }
 410
 411         return 0;
 412     }
 413     else
 414     {
 415         uplink->state = AUTHENTICATING;
 416         irc_introduce(uplink->password);
 417     }
 418
 419     return 1;
 420 }
 421
 422 void
 423 received_ping(void)
 424 {
 425     /* This function is called when a ping is received. Take it as
 426        a sign of link health and reset the connection manager
 427        information. */
 428
 429     cManager.cycles = 0;
 430 }
 431
 432 void sigaction_writedb(int x)
 433 {
 434 #ifndef HAVE_STRSIGNAL
 435     log_module(MAIN_LOG, LOG_INFO, "Signal %d -- writing databases.", x);
 436 #else
 437     log_module(MAIN_LOG, LOG_INFO, "%s -- writing databases.", strsignal(x));
 438 #endif
 439     do_write_dbs = 1;
 440 }
 441
 442 void sigaction_exit(int x)
 443 {
 444 #ifndef HAVE_STRSIGNAL
 445     log_module(MAIN_LOG, LOG_INFO, "Signal %d -- exiting.", x);
 446 #else
 447     log_module(MAIN_LOG, LOG_INFO, "%s -- exiting.", strsignal(x));
 448 #endif
 449     irc_squit(self, "Exiting on signal from console.", NULL);
 450     quit_services = 1;
 451 }
 452
 453 void sigaction_wait(UNUSED_ARG(int x))
 454 {
 455     int code;
 456     wait4(-1, &code, WNOHANG, NULL);
 457 }
 458
 459 void sigaction_rehash(int x)
 460 {
 461 #ifndef HAVE_STRSIGNAL
 462     log_module(MAIN_LOG, LOG_INFO, "Signal %d -- rehashing.", x);
 463 #else
 464     log_module(MAIN_LOG, LOG_INFO, "%s -- rehashing.", strsignal(x));
 465 #endif
 466     do_reopen = 1;
 467 }
 468
 469 static exit_func_t *ef_list;
 470 static unsigned int ef_size = 0, ef_used = 0;
 471
 472 void reg_exit_func(exit_func_t handler)
 473 {
 474     if (ef_used == ef_size) {
 475         if (ef_size) {
 476             ef_size <<= 1;
 477             ef_list = realloc(ef_list, ef_size*sizeof(exit_func_t));
 478         } else {
 479             ef_size = 8;
 480             ef_list = malloc(ef_size*sizeof(exit_func_t));
 481         }
 482     }
 483     ef_list[ef_used++] = handler;
 484 }
 485
 486 void call_exit_funcs(void)
 487 {
 488     unsigned int n = ef_used;
 489
 490     /* Call them in reverse order because we initialize logs, then
 491      * nickserv, then chanserv, etc., and they register their exit
 492      * funcs in that order, and there are some dependencies (for
 493      * example, ChanServ requires NickServ to not have cleaned up).
 494      */
 495
 496     while (n > 0) {
 497         ef_list[--n]();
 498     }
 499     free(ef_list);
 500     ef_used = ef_size = 0;
 501 }
 502
 503 int
 504 set_policer_param(const char *param, void *data, void *extra)
 505 {
 506     struct record_data *rd = data;
 507     const char *str = GET_RECORD_QSTRING(rd);
 508     if (str) {
 509         policer_params_set(extra, param, str);
 510     }
 511     return 0;
 512 }
 513
 514 static void
 515 conf_globals(void)
 516 {
 517     const char *info;
 518     dict_t dict;
 519
 520     info = conf_get_data("services/global/nick", RECDB_QSTRING);
 521     if (info && (info[0] == '.'))
 522         info = NULL;
 523     init_global(info);
 524
 525     info = conf_get_data("services/nickserv/nick", RECDB_QSTRING);
 526     if (info && (info[0] == '.'))
 527         info = NULL;
 528     init_nickserv(info);
 529
 530     info = conf_get_data("services/chanserv/nick", RECDB_QSTRING);
 531     if (info && (info[0] == '.'))
 532         info = NULL;
 533     init_chanserv(info);
 534
 535     god_policer_params = policer_params_new();
 536     if ((dict = conf_get_data("policers/commands-god", RECDB_OBJECT))) {
 537         dict_foreach(dict, set_policer_param, god_policer_params);
 538     } else {
 539         policer_params_set(god_policer_params, "size", "30");
 540         policer_params_set(god_policer_params, "drain-rate", "1");
 541     }
 542     oper_policer_params = policer_params_new();
 543     if ((dict = conf_get_data("policers/commands-oper", RECDB_OBJECT))) {
 544         dict_foreach(dict, set_policer_param, oper_policer_params);
 545     } else {
 546         policer_params_set(oper_policer_params, "size", "10");
 547         policer_params_set(oper_policer_params, "drain-rate", "1");
 548     }
 549     luser_policer_params = policer_params_new();
 550     if ((dict = conf_get_data("policers/commands-luser", RECDB_OBJECT))) {
 551         dict_foreach(dict, set_policer_param, luser_policer_params);
 552     } else {
 553         policer_params_set(luser_policer_params, "size", "5");
 554         policer_params_set(luser_policer_params, "drain-rate", "0.50");
 555     }
 556
 557     info = conf_get_data("services/opserv/nick", RECDB_QSTRING);
 558     if (info && (info[0] == '.'))
 559         info = NULL;
 560     init_opserv(info);
 561 }
 562
 563 #ifdef HAVE_SYS_RESOURCE_H
 564
 565 static int
 566 set_item_rlimit(const char *name, void *data, void *extra)
 567 {
 568     int rsrc, found;
 569     struct record_data *rd = data;
 570     struct rlimit rlim;
 571     const char *str;
 572
 573     rsrc = (int)dict_find(extra, name, &found);
 574     if (!found) {
 575         log_module(MAIN_LOG, LOG_ERROR, "Invalid rlimit \"%s\" in rlimits section.", name);
 576         return 0;
 577     }
 578     if (!(str = GET_RECORD_QSTRING(rd))) {
 579         log_module(MAIN_LOG, LOG_ERROR, "Missing or invalid parameter type for rlimit \"%s\".", name);
 580         return 0;
 581     }
 582     if (getrlimit(rsrc, &rlim) < 0) {
 583         log_module(MAIN_LOG, LOG_ERROR, "Couldn't get rlimit \"%s\": errno %d: %s", name, errno, strerror(errno));
 584         return 0;
 585     }
 586     rlim.rlim_cur = ParseVolume(str);
 587     if (setrlimit(rsrc, &rlim) < 0) {
 588         log_module(MAIN_LOG, LOG_ERROR, "Couldn't set rlimit \"%s\": errno %d: %s", name, errno, strerror(errno));
 589     }
 590     return 0;
 591 }
 592
 593 static void
 594 conf_rlimits(void)
 595 {
 596     dict_t dict, values;
 597
 598     values = dict_new();
 599     dict_insert(values, "data", (void*)RLIMIT_DATA);
 600     dict_insert(values, "stack", (void*)RLIMIT_STACK);
 601 #ifdef RLIMIT_VMEM
 602     dict_insert(values, "vmem", (void*)RLIMIT_VMEM);
 603 #else
 604 #ifdef RLIMIT_AS
 605     dict_insert(values, "vmem", (void*)RLIMIT_AS);
 606 #endif
 607 #endif
 608     if ((dict = conf_get_data("rlimits", RECDB_OBJECT))) {
 609         dict_foreach(dict, set_item_rlimit, values);
 610     }
 611     dict_delete(values);
 612 }
 613
 614 #else
 615
 616 static void
 617 conf_rlimits(void)
 618 {
 619 }
 620
 621 #endif
 622
 623 void main_shutdown(void)
 624 {
 625     struct uplinkNode *ul, *ul_next;
 626     ioset_cleanup();
 627     for (ul = cManager.uplinks; ul; ul = ul_next) {
 628         ul_next = ul->next;
 629         free(ul->bind_addr);
 630         free(ul);
 631     }
 632     tools_cleanup();
 633     conf_close();
 634     remove(PID_FILE);
 635     policer_params_delete(god_policer_params);
 636     policer_params_delete(oper_policer_params);
 637     policer_params_delete(luser_policer_params);
 638     if (replay_file)
 639         fclose(replay_file);
 640 }
 641
 642 void usage(char *self) {
 643     /* We can assume we have getopt_long(). */
 644     printf("Usage: %s [-c config] [-r log] [-d] [-f] [-v|-h]\n"
 645            "-c, --config                    selects a different configuration file.\n"
 646            "-d, --debug                     enables debug mode.\n"
 647            "-f, --foreground                run X3 in the foreground.\n"
 648            "-h, --help                      prints this usage message.\n"
 649            "-k, --check                     checks the configuration file's syntax.\n"
 650            "-r, --replay                    replay a log file (for debugging)\n"
 651            "-v, --version                   prints this program's version.\n"
 652            , self);
 653 }
 654
 655 void version() {
 656     printf("    --------------------------------------------------\n"
 657            "    - "PACKAGE_STRING", Built: " __DATE__ ", " __TIME__".\n"
 658            "    - Copyright (C) 2000 - 2005, srvx Development Team\n"
 659            "    - Copyright (C) 2004 - 2005, X3 Development Team\n"
 660            "    --------------------------------------------------\n");
 661 }
 662
 663 void license() {
 664     printf("\n"
 665            "This program is free software; you can redistribute it and/or modify\n"
 666            "it under the terms of the GNU General Public License as published by\n"
 667            "the Free Software Foundation; either version 2 of the License, or\n"
 668            "(at your option) any later version.\n"
 669            "\n"
 670            "This program is distributed in the hope that it will be useful,\n"
 671            "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
 672            "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
 673            "GNU General Public License for more details.\n"
 674            "\n"
 675            "You should have received a copy of the GNU General Public License\n"
 676            "along with this program; if not, write to the Free Software\n"
 677            "Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.\n\n");
 678 }
 679
 680 #if WITH_MALLOC_BOEHM_GC
 681 void
 682 gc_warn_proc(char *msg, GC_word arg)
 683 {
 684     log_module(MAIN_LOG, LOG_ERROR, "GC(%p): %s", (void*)arg, msg);
 685 }
 686 #endif
 687
 688 int main(int argc, char *argv[])
 689 {
 690     int daemon, debug;
 691     pid_t pid = 0;
 692     FILE *file_out;
 693     struct sigaction sv;
 694
 695 #if WITH_MALLOC_BOEHM_GC
 696     GC_find_leak = 1;
 697     GC_set_warn_proc(gc_warn_proc);
 698     GC_enable_incremental();
 699 #endif
 700
 701     daemon = 1;
 702     debug = 0;
 703     tools_init();
 704
 705     /* set up some signal handlers */
 706     memset(&sv, 0, sizeof(sv));
 707     sigemptyset(&sv.sa_mask);
 708     sv.sa_handler = SIG_IGN;
 709     sigaction(SIGPIPE, &sv, NULL);
 710     sv.sa_handler = sigaction_rehash;
 711     sigaction(SIGHUP, &sv, NULL);
 712     sv.sa_handler = sigaction_writedb;
 713     sigaction(SIGINT, &sv, NULL);
 714     sv.sa_handler = sigaction_exit;
 715     sigaction(SIGQUIT, &sv, NULL);
 716     sv.sa_handler = sigaction_wait;
 717     sigaction(SIGCHLD, &sv, NULL);
 718
 719     if (argc > 1) { /* parse command line, if any */
 720         int c;
 721         struct option options[] =
 722         {
 723             {"config", 1, 0, 'c'},
 724             {"debug", 0, 0, 'd'},
 725             {"foreground", 0, 0, 'f'},
 726             {"help", 0, 0, 'h'},
 727             {"check", 0, 0, 'k'},
 728             {"replay", 1, 0, 'r'},
 729             {"version", 0, 0, 'v'},
 730             {"verbose", 0, 0, 'V'},
 731             {0, 0, 0, 0}
 732         };
 733
 734         while ((c = getopt_long(argc, argv, "c:kr:dfvVh", options, NULL)) != -1) {
 735             switch(c) {
 736             case 'c':
 737                 services_config = optarg;
 738                 break;
 739             case 'k':
 740                 if (conf_read(services_config)) {
 741                     printf("%s appears to be a valid configuration file.\n", services_config);
 742                 } else {
 743                     printf("%s is an invalid configuration file.\n", services_config);
 744                 }
 745                 exit(0);
 746             case 'r':
 747                 replay_file = fopen(optarg, "r");
 748                 if (!replay_file) {
 749                     fprintf(stderr, "Could not open %s for reading: %s (%d)\n",
 750                             optarg, strerror(errno), errno);
 751                     exit(0);
 752                 }
 753                 break;
 754             case 'd':
 755                 debug = 1;
 756                 break;
 757             case 'f':
 758                 daemon = 0;
 759                 break;
 760             case 'v':
 761                 version();
 762                 license();
 763                 exit(0);
 764             case 'h':
 765             default:
 766                 usage(argv[0]);
 767                 exit(0);
 768             }
 769         }
 770     }
 771
 772     version();
 773
 774     if (replay_file) {
 775         /* We read a line here to "prime" the replay file parser, but
 776          * mostly to get the right value of "now" for when we do the
 777          * irc_introduce. */
 778         replay_read_line();
 779         boot_time = now;
 780     } else {
 781         boot_time = time(&now);
 782     }
 783
 784     log_module(MAIN_LOG, LOG_INFO, "Initializing daemon...");
 785     if (!conf_read(services_config)) {
 786         log_module(MAIN_LOG, LOG_FATAL, "Unable to read %s.", services_config);
 787         exit(0);
 788     }
 789
 790     conf_register_reload(uplink_compile);
 791
 792     if (daemon) {
 793         /* Attempt to fork into the background if daemon mode is on. */
 794         pid = fork();
 795         if (pid < 0) {
 796             log_module(MAIN_LOG, LOG_FATAL, "Unable to fork: %s", strerror(errno));
 797         } else if (pid > 0) {
 798             log_module(MAIN_LOG, LOG_INFO, "Forking into the background (pid: %i)...", pid);
 799             exit(0);
 800         }
 801         setsid();
 802         /* Close these since we should not use them from now on. */
 803         fclose(stdin);
 804         fclose(stdout);
 805         fclose(stderr);
 806     }
 807
 808     if ((file_out = fopen(PID_FILE, "w")) == NULL) {
 809         /* Create the main process' pid file */
 810         log_module(MAIN_LOG, LOG_ERROR, "Unable to create PID file: %s", strerror(errno));
 811     } else {
 812         fprintf(file_out, "%i\n", (int)getpid());
 813         fclose(file_out);
 814     }
 815
 816     services_argc = argc;
 817     services_argv = argv;
 818
 819     atexit(call_exit_funcs);
 820     reg_exit_func(main_shutdown);
 821
 822     log_init();
 823     MAIN_LOG = log_register_type("x3", "file:main.log");
 824     if (debug)
 825         log_debug();
 826     timeq_init();
 827     init_structs();
 828     init_parse();
 829     modcmd_init();
 830     saxdb_init();
 831     gline_init();
 832     sendmail_init();
 833     helpfile_init();
 834     conf_globals(); /* initializes the core services */
 835     conf_rlimits();
 836     modules_init();
 837     message_register_table(msgtab);
 838     modcmd_finalize();
 839     saxdb_finalize();
 840     helpfile_finalize();
 841     modules_finalize();
 842
 843     /* The first exit func to be called *should* be saxdb_write_all(). */
 844     reg_exit_func(saxdb_write_all);
 845     if (replay_file) {
 846         char *msg;
 847         log_module(MAIN_LOG, LOG_INFO, "Beginning replay...");
 848         srand(now);
 849         replay_event_loop();
 850         if ((msg = dict_sanity_check(clients))) {
 851             log_module(MAIN_LOG, LOG_ERROR, "Clients insanity: %s", msg);
 852             free(msg);
 853         }
 854         if ((msg = dict_sanity_check(channels))) {
 855             log_module(MAIN_LOG, LOG_ERROR, "Channels insanity: %s", msg);
 856             free(msg);
 857         }
 858         if ((msg = dict_sanity_check(servers))) {
 859             log_module(MAIN_LOG, LOG_ERROR, "Servers insanity: %s", msg);
 860             free(msg);
 861         }
 862     } else {
 863         srand(time(&now));
 864         ioset_run();
 865     }
 866     return 0;
 867 }