src/main.c

   1 /* main.c - srvx
   2  * Copyright 2000-2004 srvx Development Team
   3  *
   4  * This file is part of x3.
   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_BAR", "----------------------------------------" },
  81     { "MSG_SERVICE_IMMUNE", "$b%s$b may not be kicked, killed, banned, or deopped." },
  82     { "MSG_SERVICE_PRIVILEGED", "$b%s$b is a privileged service." },
  83     { "MSG_NOT_A_SERVICE", "$b%s$b is not a service bot." },
  84     { "MSG_COMMAND_UNKNOWN", "$b%s$b is an unknown command." },
  85     { "MSG_COMMAND_PRIVILEGED", "$b%s$b is a privileged command." },
  86     { "MSG_COMMAND_DISABLED", "$b%s$b is a disabled command." },
  87     { "MSG_SETTING_PRIVILEGED", "$b%s$b is a privileged setting." },
  88     { "MSG_AUTHENTICATE", "You must first authenticate with $b$N$b." },
  89     { "MSG_USER_AUTHENTICATE", "%s must first authenticate with $b$N$b." },
  90     { "MSG_SET_EMAIL_ADDR", "You must first set your account's email address.  (Contact network staff if you cannot auth to your account.)" },
  91     { "MSG_HANDLE_UNKNOWN", "Account $b%s$b has not been registered." },
  92     { "MSG_NICK_UNKNOWN", "User with nick $b%s$b does not exist." },
  93     { "MSG_CHANNEL_UNKNOWN", "Channel with name $b%s$b does not exist." },
  94     { "MSG_SERVER_UNKNOWN", "Server with name $b%s$b does not exist or is not linked." },
  95     { "MSG_MODULE_UNKNOWN", "No module has been registered with name $b%s$b." },
  96     { "MSG_INVALID_MODES", "$b%s$b is an invalid set of channel modes." },
  97     { "MSG_INVALID_GLINE", "Invalid G-line '%s'." },
  98     { "MSG_INVALID_DURATION", "Invalid time span '%s'." },
  99     { "MSG_NOT_TARGET_NAME", "You must provide the name of a channel or user." },
 100     { "MSG_NOT_CHANNEL_NAME", "The channel name you specified is not a valid channel name." },
 101     { "MSG_INVALID_CHANNEL", "The channel name you specified does not exist." },
 102     { "MSG_CHANNEL_ABSENT", "You aren't currently in $b%s$b." },
 103     { "MSG_CHANNEL_USER_ABSENT", "$b%s$b isn't currently in $b%s$b." },
 104     { "MSG_MISSING_PARAMS", "$b%s$b requires more parameters." },
 105     { "MSG_DEPRECATED_COMMAND", "The $b%s$b command has been deprecated, and will be removed in the future; please use $b%s$b instead." },
 106     { "MSG_OPER_SUSPENDED", "Your $b$O$b access has been suspended." },
 107     { "MSG_USER_OUTRANKED", "$b%s$b outranks you (command has no effect)." },
 108     { "MSG_STUPID_ACCESS_CHANGE", "Please ask someone $belse$b to demote you." },
 109     { "MSG_NO_SEARCH_ACCESS", "You do not have enough access to search based on $b%s$b." },
 110     { "MSG_INVALID_CRITERIA", "$b%s$b is an invalid search criteria." },
 111     { "MSG_MATCH_COUNT", "-----------Found $b%3u$b Matches------------" },
 112     { "MSG_NO_MATCHES", "Nothing matched the criteria of your search." },
 113     { "MSG_TOPIC_UNKNOWN", "No help on that topic." },
 114     { "MSG_INVALID_BINARY", "$b%s$b is an invalid binary value." },
 115     { "MSG_INTERNAL_FAILURE", "Your command could not be processed due to an internal failure." },
 116     { "MSG_DB_UNKNOWN", "I do not know of a database named %s." },
 117     { "MSG_DB_IS_MONDO", "Database %s is in the \"mondo\" database and cannot be written separately." },
 118     { "MSG_DB_WRITE_ERROR", "Error while writing database %s." },
 119     { "MSG_DB_WROTE_DB", "Wrote database %s (in "FMT_TIME_T".%06lu seconds)." },
 120     { "MSG_DB_WROTE_ALL", "Wrote all databases (in "FMT_TIME_T".%06lu seconds)." },
 121     { "MSG_AND", "," },
 122     { "MSG_0_SECONDS", "0 seconds" },
 123     { "MSG_YEAR", "y" },
 124     { "MSG_YEARS", "y" },
 125     { "MSG_WEEK", "w" },
 126     { "MSG_WEEKS", "w" },
 127     { "MSG_DAY", "d" },
 128     { "MSG_DAYS", "d" },
 129     { "MSG_HOUR", "h" },
 130     { "MSG_HOURS", "h" },
 131     { "MSG_MINUTE", "m" },
 132     { "MSG_MINUTES", "m" },
 133     { "MSG_SECOND", "s" },
 134     { "MSG_SECONDS", "s" },
 135     { NULL, NULL }
 136 };
 137
 138 void uplink_select(char *name);
 139
 140 static int
 141 uplink_insert(const char *key, void *data, UNUSED_ARG(void *extra))
 142 {
 143     struct uplinkNode *uplink = malloc(sizeof(struct uplinkNode));
 144     struct record_data *rd = data;
 145     int enabled = 1;
 146     char *str;
 147     struct sockaddr_in *sin;
 148     unsigned long addr;
 149
 150     if(!uplink)
 151     {
 152         return 0;
 153     }
 154
 155     uplink->name = (char *)key;
 156     uplink->host = database_get_data(rd->d.object, "address", RECDB_QSTRING);
 157
 158     str = database_get_data(rd->d.object, "port", RECDB_QSTRING);
 159     uplink->port = str ? atoi(str) : 6667;
 160     uplink->password = database_get_data(rd->d.object, "password", RECDB_QSTRING);
 161     uplink->their_password = database_get_data(rd->d.object, "uplink_password", RECDB_QSTRING);
 162
 163     str = database_get_data(rd->d.object, "enabled", RECDB_QSTRING);
 164     if(str)
 165     {
 166         enabled = atoi(str) ? 1 : 0;
 167     }
 168
 169     cManager.enabled += enabled;
 170
 171     str = database_get_data(rd->d.object, "max_tries", RECDB_QSTRING);
 172     uplink->max_tries = str ? atoi(str) : 3;
 173     uplink->flags = enabled ? 0 : UPLINK_UNAVAILABLE;
 174     uplink->state = DISCONNECTED;
 175     uplink->tries = 0;
 176
 177     str = database_get_data(rd->d.object, "bind_address", RECDB_QSTRING);
 178     uplink->bind_addr_len = sizeof(*sin);
 179     if (str && getipbyname(str, &addr))
 180     {
 181         sin = calloc(1, uplink->bind_addr_len);
 182         sin->sin_family = AF_INET;
 183         sin->sin_addr.s_addr = addr;
 184         uplink->bind_addr = sin;
 185     }
 186     else
 187     {
 188         uplink->bind_addr = NULL;
 189         uplink->bind_addr_len = 0;
 190     }
 191
 192     uplink->next = cManager.uplinks;
 193     uplink->prev = NULL;
 194
 195     if(cManager.uplinks)
 196     {
 197         cManager.uplinks->prev = uplink;
 198     }
 199
 200     cManager.uplinks = uplink;
 201
 202     /* If the configuration is being reloaded, set the current uplink
 203        to the reloaded equivalent, if possible. */
 204     if(cManager.uplink
 205        && enabled
 206        && !irccasecmp(uplink->host, cManager.uplink->host)
 207        && uplink->port == cManager.uplink->port)
 208     {
 209         uplink->state = cManager.uplink->state;
 210         uplink->tries = cManager.uplink->tries;
 211         cManager.uplink = uplink;
 212     }
 213
 214     return 0;
 215 }
 216
 217 void
 218 uplink_compile(void)
 219 {
 220     const char *cycles;
 221     dict_t conf_node;
 222     struct uplinkNode *oldUplinks = NULL, *oldUplink = NULL;
 223
 224     /* Save the old uplinks, we'll remove them later. */
 225     oldUplink = cManager.uplink;
 226     oldUplinks = cManager.uplinks;
 227
 228     cycles = conf_get_data("server/max_cycles", RECDB_QSTRING);
 229     max_cycles = cycles ? atoi(cycles) : 30;
 230     if(!(conf_node = conf_get_data("uplinks", RECDB_OBJECT)))
 231     {
 232         log_module(MAIN_LOG, LOG_FATAL, "No uplinks configured; giving up.");
 233         exit(1);
 234     }
 235
 236     cManager.enabled = 0;
 237     dict_foreach(conf_node, uplink_insert, NULL);
 238
 239     /* Remove the old uplinks, if any. It doesn't matter if oldUplink (below)
 240        is a reference to one of these, because it won't get dereferenced. */
 241     if(oldUplinks)
 242     {
 243         struct uplinkNode *uplink, *next;
 244
 245         oldUplinks->prev->next = NULL;
 246
 247         for(uplink = oldUplinks; uplink; uplink = next)
 248         {
 249             next = uplink->next;
 250             free(uplink->bind_addr);
 251             free(uplink);
 252         }
 253     }
 254
 255     /* If the uplink hasn't changed, it's either NULL or pointing at
 256        an uplink that was just deleted, select a new one. */
 257     if(cManager.uplink == oldUplink)
 258     {
 259         if(oldUplink)
 260         {
 261             irc_squit(self, "Uplinks updated; selecting new uplink.", NULL);
 262         }
 263
 264         cManager.uplink = NULL;
 265         uplink_select(NULL);
 266     }
 267 }
 268
 269 struct uplinkNode *
 270 uplink_find(char *name)
 271 {
 272     struct uplinkNode *uplink;
 273
 274     if(!cManager.enabled || !cManager.uplinks)
 275     {
 276         return NULL;
 277     }
 278
 279     for(uplink = cManager.uplinks; uplink; uplink = uplink->next)
 280     {
 281         if(!strcasecmp(uplink->name, name))
 282         {
 283             return uplink;
 284         }
 285     }
 286
 287     return NULL;
 288 }
 289
 290 void
 291 uplink_select(char *name)
 292 {
 293     struct uplinkNode *start, *uplink, *next;
 294     int stop;
 295
 296     if(!cManager.enabled || !cManager.uplinks)
 297     {
 298         log_module(MAIN_LOG, LOG_FATAL, "No uplinks enabled; giving up.");
 299         exit(1);
 300     }
 301
 302     if(!cManager.uplink)
 303     {
 304         start = cManager.uplinks;
 305     }
 306     else
 307     {
 308         start = cManager.uplink->next;
 309         if(!start)
 310         {
 311             start = cManager.uplinks;
 312         }
 313     }
 314
 315     stop = 0;
 316     for(uplink = start; uplink; uplink = next)
 317     {
 318         next = uplink->next ? uplink->next : cManager.uplinks;
 319
 320         if(stop)
 321         {
 322             uplink = NULL;
 323             break;
 324         }
 325
 326         /* We've wrapped around the list. */
 327         if(next == start)
 328         {
 329             sleep((cManager.cycles >> 1) * 5);
 330             cManager.cycles++;
 331
 332             if(max_cycles && (cManager.cycles >= max_cycles))
 333             {
 334                 log_module(MAIN_LOG, LOG_FATAL, "Maximum uplink list cycles exceeded; giving up.");
 335                 exit(1);
 336             }
 337
 338             /* Give the uplink currently in 'uplink' consideration,
 339                and if not selected, break on the next iteration. */
 340             stop = 1;
 341         }
 342
 343         /* Skip bad uplinks. */
 344         if(uplink->flags & UPLINK_UNAVAILABLE)
 345         {
 346             continue;
 347         }
 348
 349         if(name && irccasecmp(uplink->name, name))
 350         {
 351             /* If we were told to connect to a specific uplink, don't stop
 352                until we find it.
 353             */
 354             continue;
 355         }
 356
 357         /* It would be possible to track uplink health through a variety
 358            of statistics and only break on the best uplink. For now, break
 359            on the first available one.
 360         */
 361
 362         break;
 363     }
 364
 365     if(!uplink)
 366     {
 367         /* We are shit outta luck if every single uplink has been passed
 368            over. Use the current uplink if possible. */
 369         if(!cManager.uplink || cManager.uplink->flags & UPLINK_UNAVAILABLE)
 370         {
 371             log_module(MAIN_LOG, LOG_FATAL, "All available uplinks exhausted; giving up.");
 372             exit(1);
 373         }
 374
 375         return;
 376     }
 377
 378     cManager.uplink = uplink;
 379 }
 380
 381 int
 382 uplink_connect(void)
 383 {
 384     struct uplinkNode *uplink = cManager.uplink;
 385
 386     if(uplink->state != DISCONNECTED)
 387     {
 388         return 0;
 389     }
 390
 391     if(uplink->flags & UPLINK_UNAVAILABLE)
 392     {
 393         uplink_select(NULL);
 394         uplink = cManager.uplink;
 395     }
 396
 397     if(uplink->tries)
 398     {
 399         /* This delay could scale with the number of tries. */
 400         sleep(2);
 401     }
 402
 403     if(!create_socket_client(uplink))
 404     {
 405         if(uplink->max_tries && (uplink->tries >= uplink->max_tries))
 406         {
 407             /* This is a bad uplink, move on. */
 408             uplink->flags |= UPLINK_UNAVAILABLE;
 409             uplink_select(NULL);
 410         }
 411
 412         return 0;
 413     }
 414     else
 415     {
 416         uplink->state = AUTHENTICATING;
 417         irc_introduce(uplink->password);
 418     }
 419
 420     return 1;
 421 }
 422
 423 void
 424 received_ping(void)
 425 {
 426     /* This function is called when a ping is received. Take it as
 427        a sign of link health and reset the connection manager
 428        information. */
 429
 430     cManager.cycles = 0;
 431 }
 432
 433 void sigaction_writedb(int x)
 434 {
 435 #ifndef HAVE_STRSIGNAL
 436     log_module(MAIN_LOG, LOG_INFO, "Signal %d -- writing databases.", x);
 437 #else
 438     log_module(MAIN_LOG, LOG_INFO, "%s -- writing databases.", strsignal(x));
 439 #endif
 440     do_write_dbs = 1;
 441 }
 442
 443 void sigaction_exit(int x)
 444 {
 445 #ifndef HAVE_STRSIGNAL
 446     log_module(MAIN_LOG, LOG_INFO, "Signal %d -- exiting.", x);
 447 #else
 448     log_module(MAIN_LOG, LOG_INFO, "%s -- exiting.", strsignal(x));
 449 #endif
 450     irc_squit(self, "Exiting on signal from console.", NULL);
 451     quit_services = 1;
 452 }
 453
 454 void sigaction_wait(UNUSED_ARG(int x))
 455 {
 456     int code;
 457     wait4(-1, &code, WNOHANG, NULL);
 458 }
 459
 460 void sigaction_rehash(int x)
 461 {
 462 #ifndef HAVE_STRSIGNAL
 463     log_module(MAIN_LOG, LOG_INFO, "Signal %d -- rehashing.", x);
 464 #else
 465     log_module(MAIN_LOG, LOG_INFO, "%s -- rehashing.", strsignal(x));
 466 #endif
 467     do_reopen = 1;
 468 }
 469
 470 static exit_func_t *ef_list;
 471 static unsigned int ef_size = 0, ef_used = 0;
 472
 473 void reg_exit_func(exit_func_t handler)
 474 {
 475     if (ef_used == ef_size) {
 476         if (ef_size) {
 477             ef_size <<= 1;
 478             ef_list = realloc(ef_list, ef_size*sizeof(exit_func_t));
 479         } else {
 480             ef_size = 8;
 481             ef_list = malloc(ef_size*sizeof(exit_func_t));
 482         }
 483     }
 484     ef_list[ef_used++] = handler;
 485 }
 486
 487 void call_exit_funcs(void)
 488 {
 489     unsigned int n = ef_used;
 490
 491     /* Call them in reverse order because we initialize logs, then
 492      * nickserv, then chanserv, etc., and they register their exit
 493      * funcs in that order, and there are some dependencies (for
 494      * example, ChanServ requires NickServ to not have cleaned up).
 495      */
 496
 497     while (n > 0) {
 498         ef_list[--n]();
 499     }
 500     free(ef_list);
 501     ef_used = ef_size = 0;
 502 }
 503
 504 int
 505 set_policer_param(const char *param, void *data, void *extra)
 506 {
 507     struct record_data *rd = data;
 508     const char *str = GET_RECORD_QSTRING(rd);
 509     if (str) {
 510         policer_params_set(extra, param, str);
 511     }
 512     return 0;
 513 }
 514
 515 static void
 516 conf_globals(void)
 517 {
 518     const char *info;
 519     dict_t dict;
 520
 521     info = conf_get_data("services/global/nick", RECDB_QSTRING);
 522     if (info && (info[0] == '.'))
 523         info = NULL;
 524     init_global(info);
 525
 526     info = conf_get_data("services/nickserv/nick", RECDB_QSTRING);
 527     if (info && (info[0] == '.'))
 528         info = NULL;
 529     init_nickserv(info);
 530
 531     info = conf_get_data("services/chanserv/nick", RECDB_QSTRING);
 532     if (info && (info[0] == '.'))
 533         info = NULL;
 534     init_chanserv(info);
 535
 536     god_policer_params = policer_params_new();
 537     if ((dict = conf_get_data("policers/commands-god", RECDB_OBJECT))) {
 538         dict_foreach(dict, set_policer_param, god_policer_params);
 539     } else {
 540         policer_params_set(god_policer_params, "size", "30");
 541         policer_params_set(god_policer_params, "drain-rate", "1");
 542     }
 543     oper_policer_params = policer_params_new();
 544     if ((dict = conf_get_data("policers/commands-oper", RECDB_OBJECT))) {
 545         dict_foreach(dict, set_policer_param, oper_policer_params);
 546     } else {
 547         policer_params_set(oper_policer_params, "size", "10");
 548         policer_params_set(oper_policer_params, "drain-rate", "1");
 549     }
 550     luser_policer_params = policer_params_new();
 551     if ((dict = conf_get_data("policers/commands-luser", RECDB_OBJECT))) {
 552         dict_foreach(dict, set_policer_param, luser_policer_params);
 553     } else {
 554         policer_params_set(luser_policer_params, "size", "5");
 555         policer_params_set(luser_policer_params, "drain-rate", "0.50");
 556     }
 557
 558     info = conf_get_data("services/opserv/nick", RECDB_QSTRING);
 559     if (info && (info[0] == '.'))
 560         info = NULL;
 561     init_opserv(info);
 562 }
 563
 564 #ifdef HAVE_SYS_RESOURCE_H
 565
 566 static int
 567 set_item_rlimit(const char *name, void *data, void *extra)
 568 {
 569     int rsrc, found;
 570     struct record_data *rd = data;
 571     struct rlimit rlim;
 572     const char *str;
 573
 574     rsrc = (int)dict_find(extra, name, &found);
 575     if (!found) {
 576         log_module(MAIN_LOG, LOG_ERROR, "Invalid rlimit \"%s\" in rlimits section.", name);
 577         return 0;
 578     }
 579     if (!(str = GET_RECORD_QSTRING(rd))) {
 580         log_module(MAIN_LOG, LOG_ERROR, "Missing or invalid parameter type for rlimit \"%s\".", name);
 581         return 0;
 582     }
 583     if (getrlimit(rsrc, &rlim) < 0) {
 584         log_module(MAIN_LOG, LOG_ERROR, "Couldn't get rlimit \"%s\": errno %d: %s", name, errno, strerror(errno));
 585         return 0;
 586     }
 587     rlim.rlim_cur = ParseVolume(str);
 588     if (setrlimit(rsrc, &rlim) < 0) {
 589         log_module(MAIN_LOG, LOG_ERROR, "Couldn't set rlimit \"%s\": errno %d: %s", name, errno, strerror(errno));
 590     }
 591     return 0;
 592 }
 593
 594 static void
 595 conf_rlimits(void)
 596 {
 597     dict_t dict, values;
 598
 599     values = dict_new();
 600     dict_insert(values, "data", (void*)RLIMIT_DATA);
 601     dict_insert(values, "stack", (void*)RLIMIT_STACK);
 602 #ifdef RLIMIT_VMEM
 603     dict_insert(values, "vmem", (void*)RLIMIT_VMEM);
 604 #else
 605 #ifdef RLIMIT_AS
 606     dict_insert(values, "vmem", (void*)RLIMIT_AS);
 607 #endif
 608 #endif
 609     if ((dict = conf_get_data("rlimits", RECDB_OBJECT))) {
 610         dict_foreach(dict, set_item_rlimit, values);
 611     }
 612     dict_delete(values);
 613 }
 614
 615 #else
 616
 617 static void
 618 conf_rlimits(void)
 619 {
 620 }
 621
 622 #endif
 623
 624 void main_shutdown(void)
 625 {
 626     struct uplinkNode *ul, *ul_next;
 627     ioset_cleanup();
 628     for (ul = cManager.uplinks; ul; ul = ul_next) {
 629         ul_next = ul->next;
 630         free(ul->bind_addr);
 631         free(ul);
 632     }
 633     tools_cleanup();
 634     conf_close();
 635     remove(PID_FILE);
 636     policer_params_delete(god_policer_params);
 637     policer_params_delete(oper_policer_params);
 638     policer_params_delete(luser_policer_params);
 639     if (replay_file)
 640         fclose(replay_file);
 641 }
 642
 643 void usage(char *self) {
 644     /* We can assume we have getopt_long(). */
 645     printf("Usage: %s [-c config] [-r log] [-d] [-f] [-v|-h]\n"
 646            "-c, --config                    selects a different configuration file.\n"
 647            "-d, --debug                     enables debug mode.\n"
 648            "-f, --foreground                run X3 in the foreground.\n"
 649            "-h, --help                      prints this usage message.\n"
 650            "-k, --check                     checks the configuration file's syntax.\n"
 651            "-r, --replay                    replay a log file (for debugging)\n"
 652            "-v, --version                   prints this program's version.\n"
 653            , self);
 654 }
 655
 656 void version() {
 657     printf("    --------------------------------------------------\n"
 658            "    - "PACKAGE_STRING", Built: " __DATE__ ", " __TIME__".\n"
 659            "    - Copyright (C) 2000 - 2005, srvx Development Team\n"
 660            "    - Copyright (C) 2004 - 2005, X3 Development Team\n"
 661            "    --------------------------------------------------\n");
 662 }
 663
 664 void license() {
 665     printf("\n"
 666            "This program is free software; you can redistribute it and/or modify\n"
 667            "it under the terms of the GNU General Public License as published by\n"
 668            "the Free Software Foundation; either version 2 of the License, or\n"
 669            "(at your option) any later version.\n"
 670            "\n"
 671            "This program is distributed in the hope that it will be useful,\n"
 672            "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
 673            "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
 674            "GNU General Public License for more details.\n"
 675            "\n"
 676            "You should have received a copy of the GNU General Public License\n"
 677            "along with this program; if not, write to the Free Software\n"
 678            "Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.\n\n");
 679 }
 680
 681 #if WITH_MALLOC_BOEHM_GC
 682 void
 683 gc_warn_proc(char *msg, GC_word arg)
 684 {
 685     log_module(MAIN_LOG, LOG_ERROR, "GC(%p): %s", (void*)arg, msg);
 686 }
 687 #endif
 688
 689 int main(int argc, char *argv[])
 690 {
 691     int daemon, debug;
 692     pid_t pid = 0;
 693     FILE *file_out;
 694     struct sigaction sv;
 695
 696 #if WITH_MALLOC_BOEHM_GC
 697     GC_find_leak = 1;
 698     GC_set_warn_proc(gc_warn_proc);
 699     GC_enable_incremental();
 700 #endif
 701
 702     daemon = 1;
 703     debug = 0;
 704     tools_init();
 705
 706     /* set up some signal handlers */
 707     memset(&sv, 0, sizeof(sv));
 708     sigemptyset(&sv.sa_mask);
 709     sv.sa_handler = SIG_IGN;
 710     sigaction(SIGPIPE, &sv, NULL);
 711     sv.sa_handler = sigaction_rehash;
 712     sigaction(SIGHUP, &sv, NULL);
 713     sv.sa_handler = sigaction_writedb;
 714     sigaction(SIGINT, &sv, NULL);
 715     sv.sa_handler = sigaction_exit;
 716     sigaction(SIGQUIT, &sv, NULL);
 717     sv.sa_handler = sigaction_wait;
 718     sigaction(SIGCHLD, &sv, NULL);
 719
 720     if (argc > 1) { /* parse command line, if any */
 721         int c;
 722         struct option options[] =
 723         {
 724             {"config", 1, 0, 'c'},
 725             {"debug", 0, 0, 'd'},
 726             {"foreground", 0, 0, 'f'},
 727             {"help", 0, 0, 'h'},
 728             {"check", 0, 0, 'k'},
 729             {"replay", 1, 0, 'r'},
 730             {"version", 0, 0, 'v'},
 731             {"verbose", 0, 0, 'V'},
 732             {0, 0, 0, 0}
 733         };
 734
 735         while ((c = getopt_long(argc, argv, "c:kr:dfvVh", options, NULL)) != -1) {
 736             switch(c) {
 737             case 'c':
 738                 services_config = optarg;
 739                 break;
 740             case 'k':
 741                 if (conf_read(services_config)) {
 742                     printf("%s appears to be a valid configuration file.\n", services_config);
 743                 } else {
 744                     printf("%s is an invalid configuration file.\n", services_config);
 745                 }
 746                 exit(0);
 747             case 'r':
 748                 replay_file = fopen(optarg, "r");
 749                 if (!replay_file) {
 750                     fprintf(stderr, "Could not open %s for reading: %s (%d)\n",
 751                             optarg, strerror(errno), errno);
 752                     exit(0);
 753                 }
 754                 break;
 755             case 'd':
 756                 debug = 1;
 757                 break;
 758             case 'f':
 759                 daemon = 0;
 760                 break;
 761             case 'v':
 762                 version();
 763                 license();
 764                 exit(0);
 765             case 'h':
 766             default:
 767                 usage(argv[0]);
 768                 exit(0);
 769             }
 770         }
 771     }
 772
 773     version();
 774
 775     if (replay_file) {
 776         /* We read a line here to "prime" the replay file parser, but
 777          * mostly to get the right value of "now" for when we do the
 778          * irc_introduce. */
 779         replay_read_line();
 780         boot_time = now;
 781     } else {
 782         boot_time = time(&now);
 783     }
 784
 785     log_module(MAIN_LOG, LOG_INFO, "Initializing daemon...");
 786     if (!conf_read(services_config)) {
 787         log_module(MAIN_LOG, LOG_FATAL, "Unable to read %s.", services_config);
 788         exit(0);
 789     }
 790
 791     conf_register_reload(uplink_compile);
 792
 793     if (daemon) {
 794         /* Attempt to fork into the background if daemon mode is on. */
 795         pid = fork();
 796         if (pid < 0) {
 797             log_module(MAIN_LOG, LOG_FATAL, "Unable to fork: %s", strerror(errno));
 798         } else if (pid > 0) {
 799             log_module(MAIN_LOG, LOG_INFO, "Forking into the background (pid: %i)...", pid);
 800             exit(0);
 801         }
 802         setsid();
 803         /* Close these since we should not use them from now on. */
 804         fclose(stdin);
 805         fclose(stdout);
 806         fclose(stderr);
 807     }
 808
 809     if ((file_out = fopen(PID_FILE, "w")) == NULL) {
 810         /* Create the main process' pid file */
 811         log_module(MAIN_LOG, LOG_ERROR, "Unable to create PID file: %s", strerror(errno));
 812     } else {
 813         fprintf(file_out, "%i\n", (int)getpid());
 814         fclose(file_out);
 815     }
 816
 817     services_argc = argc;
 818     services_argv = argv;
 819
 820     atexit(call_exit_funcs);
 821     reg_exit_func(main_shutdown);
 822
 823     log_init();
 824     MAIN_LOG = log_register_type("x3", "file:main.log");
 825     if (debug)
 826         log_debug();
 827     timeq_init();
 828     init_structs();
 829     init_parse();
 830     modcmd_init();
 831     saxdb_init();
 832     gline_init();
 833     sendmail_init();
 834     helpfile_init();
 835     conf_globals(); /* initializes the core services */
 836     conf_rlimits();
 837     modules_init();
 838     message_register_table(msgtab);
 839     modcmd_finalize();
 840     saxdb_finalize();
 841     helpfile_finalize();
 842     modules_finalize();
 843
 844     /* The first exit func to be called *should* be saxdb_write_all(). */
 845     reg_exit_func(saxdb_write_all);
 846     if (replay_file) {
 847         char *msg;
 848         log_module(MAIN_LOG, LOG_INFO, "Beginning replay...");
 849         srand(now);
 850         replay_event_loop();
 851         if ((msg = dict_sanity_check(clients))) {
 852             log_module(MAIN_LOG, LOG_ERROR, "Clients insanity: %s", msg);
 853             free(msg);
 854         }
 855         if ((msg = dict_sanity_check(channels))) {
 856             log_module(MAIN_LOG, LOG_ERROR, "Channels insanity: %s", msg);
 857             free(msg);
 858         }
 859         if ((msg = dict_sanity_check(servers))) {
 860             log_module(MAIN_LOG, LOG_ERROR, "Servers insanity: %s", msg);
 861             free(msg);
 862         }
 863     } else {
 864         srand(time(&now));
 865         ioset_run();
 866     }
 867     return 0;
 868 }