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root/svn/ircd-hybrid/branches/8.2.x/src/ircd.c
Revision: 4132
Committed: Tue Jul 1 21:42:48 2014 UTC (9 years, 9 months ago) by michael
Content type: text/x-csrc
File size: 17122 byte(s)
Log Message:
- ircd.c: removed 'event_check_splitmode'. Changed 'splitmode_event' to run every 5 seconds
  if server is in splitmode

File Contents

# Content
1 /*
2 * ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3 *
4 * Copyright (c) 1997-2014 ircd-hybrid development team
5 *
6 * This program 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 this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19 * USA
20 */
21
22 /*! \file ircd.c
23 * \brief Starts up and runs the ircd.
24 * \version $Id$
25 */
26
27 #include "stdinc.h"
28 #include "user.h"
29 #include "list.h"
30 #include "ircd.h"
31 #include "channel.h"
32 #include "client.h"
33 #include "event.h"
34 #include "fdlist.h"
35 #include "hash.h"
36 #include "irc_string.h"
37 #include "ircd_signal.h"
38 #include "gline.h"
39 #include "motd.h"
40 #include "conf.h"
41 #include "hostmask.h"
42 #include "parse.h"
43 #include "res.h"
44 #include "restart.h"
45 #include "rng_mt.h"
46 #include "auth.h"
47 #include "s_bsd.h"
48 #include "log.h"
49 #include "server.h" /* try_connections */
50 #include "send.h"
51 #include "whowas.h"
52 #include "modules.h"
53 #include "memory.h"
54 #include "mempool.h"
55 #include "ircd_getopt.h"
56 #include "watch.h"
57 #include "conf_db.h"
58 #include "conf_class.h"
59
60
61 #ifdef HAVE_LIBGEOIP
62 GeoIP *geoip_ctx;
63 #endif
64
65 struct ServerStatistics ServerStats;
66 struct timeval SystemTime;
67 struct Client me; /* That's me */
68 struct LocalUser meLocalUser; /* That's also part of me */
69
70 const char *logFileName = LPATH;
71 const char *pidFileName = PPATH;
72
73 char **myargv;
74
75 int dorehash = 0;
76 int doremotd = 0;
77
78 /* Set to zero because it should be initialized later using
79 * initialize_server_capabs
80 */
81 unsigned int default_server_capabs;
82 unsigned int splitmode;
83 unsigned int splitchecking;
84 unsigned int split_users;
85 unsigned int split_servers;
86
87 static struct event event_cleanup_glines =
88 {
89 .name = "cleanup_glines",
90 .handler = cleanup_glines,
91 .when = CLEANUP_GLINES_TIME
92 };
93
94 static struct event event_cleanup_tklines =
95 {
96 .name = "cleanup_tklines",
97 .handler = cleanup_tklines,
98 .when = CLEANUP_TKLINES_TIME
99 };
100
101 static struct event event_try_connections =
102 {
103 .name = "try_connections",
104 .handler = try_connections,
105 .when = STARTUP_CONNECTIONS_TIME
106 };
107
108 static struct event event_comm_checktimeouts =
109 {
110 .name = "comm_checktimeouts",
111 .handler = comm_checktimeouts,
112 .when = 1
113 };
114
115 static struct event event_save_all_databases =
116 {
117 .name = "save_all_databases",
118 .handler = save_all_databases,
119 .when = DATABASE_UPDATE_TIMEOUT
120 };
121
122 struct event event_write_links_file =
123 {
124 .name = "write_links_file",
125 .handler = write_links_file,
126 };
127
128
129 /*
130 * print_startup - print startup information
131 */
132 static void
133 print_startup(int pid)
134 {
135 printf("ircd: version %s(%s)\n", ircd_version, serno);
136 printf("ircd: pid %d\n", pid);
137 printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
138 : "foreground", ConfigFileEntry.dpath);
139 }
140
141 static void
142 make_daemon(void)
143 {
144 int pid;
145
146 if ((pid = fork()) < 0)
147 {
148 perror("fork");
149 exit(EXIT_FAILURE);
150 }
151 else if (pid > 0)
152 {
153 print_startup(pid);
154 exit(EXIT_SUCCESS);
155 }
156
157 setsid();
158 }
159
160 static int printVersion = 0;
161
162 static struct lgetopt myopts[] =
163 {
164 {"configfile", &ConfigFileEntry.configfile,
165 STRING, "File to use for ircd.conf"},
166 {"glinefile", &ConfigFileEntry.glinefile,
167 STRING, "File to use for gline database"},
168 {"klinefile", &ConfigFileEntry.klinefile,
169 STRING, "File to use for kline database"},
170 {"dlinefile", &ConfigFileEntry.dlinefile,
171 STRING, "File to use for dline database"},
172 {"xlinefile", &ConfigFileEntry.xlinefile,
173 STRING, "File to use for xline database"},
174 {"resvfile", &ConfigFileEntry.resvfile,
175 STRING, "File to use for resv database"},
176 {"logfile", &logFileName,
177 STRING, "File to use for ircd.log"},
178 {"pidfile", &pidFileName,
179 STRING, "File to use for process ID"},
180 {"foreground", &server_state.foreground,
181 YESNO, "Run in foreground (don't detach)"},
182 {"version", &printVersion,
183 YESNO, "Print version and exit"},
184 {"help", NULL, USAGE, "Print this text"},
185 {NULL, NULL, STRING, NULL},
186 };
187
188 void
189 set_time(void)
190 {
191 struct timeval newtime = { .tv_sec = 0, .tv_usec = 0 };
192
193 if (gettimeofday(&newtime, NULL) == -1)
194 {
195 ilog(LOG_TYPE_IRCD, "Clock Failure (%s), TS can be corrupted",
196 strerror(errno));
197 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
198 "Clock Failure (%s), TS can be corrupted",
199 strerror(errno));
200 server_die("Clock Failure", 1);
201 }
202
203 if (newtime.tv_sec < CurrentTime)
204 {
205 ilog(LOG_TYPE_IRCD, "System clock is running backwards - (%lu < %lu)",
206 (unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
207 sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
208 "System clock is running backwards - (%lu < %lu)",
209 (unsigned long)newtime.tv_sec,
210 (unsigned long)CurrentTime);
211 set_back_events(CurrentTime - newtime.tv_sec);
212 }
213
214 SystemTime.tv_sec = newtime.tv_sec;
215 SystemTime.tv_usec = newtime.tv_usec;
216 }
217
218 static void
219 io_loop(void)
220 {
221 while (1)
222 {
223 if (listing_client_list.head)
224 {
225 dlink_node *ptr = NULL, *ptr_next = NULL;
226 DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
227 safe_list_channels(ptr->data, 0);
228 }
229
230 /* Run pending events */
231 event_run();
232
233 comm_select();
234 exit_aborted_clients();
235 free_exited_clients();
236
237 /* Check to see whether we have to rehash the configuration .. */
238 if (dorehash)
239 {
240 rehash(1);
241 dorehash = 0;
242 }
243
244 if (doremotd)
245 {
246 motd_recache();
247 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
248 "Got signal SIGUSR1, reloading motd file(s)");
249 doremotd = 0;
250 }
251 }
252 }
253
254 /* initalialize_global_set_options()
255 *
256 * inputs - none
257 * output - none
258 * side effects - This sets all global set options needed
259 */
260 static void
261 initialize_global_set_options(void)
262 {
263 memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));
264
265 GlobalSetOptions.autoconn = 1;
266 GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
267 GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
268
269 if (ConfigFileEntry.default_floodcount)
270 GlobalSetOptions.floodcount = ConfigFileEntry.default_floodcount;
271 else
272 GlobalSetOptions.floodcount = 10;
273
274 /* XXX I have no idea what to try here - Dianora */
275 GlobalSetOptions.joinfloodcount = 16;
276 GlobalSetOptions.joinfloodtime = 8;
277
278 split_servers = ConfigChannel.default_split_server_count;
279 split_users = ConfigChannel.default_split_user_count;
280
281 if (split_users && split_servers && (ConfigChannel.no_create_on_split ||
282 ConfigChannel.no_join_on_split))
283 {
284 splitmode = 1;
285 splitchecking = 1;
286 }
287
288 GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
289 /* End of global set options */
290 }
291
292 /* initialize_server_capabs()
293 *
294 * inputs - none
295 * output - none
296 */
297 static void
298 initialize_server_capabs(void)
299 {
300 add_capability("QS", CAP_QS, 1);
301 add_capability("EOB", CAP_EOB, 1);
302 add_capability("TS6", CAP_TS6, 0);
303 add_capability("CLUSTER", CAP_CLUSTER, 1);
304 add_capability("SVS", CAP_SVS, 1);
305 add_capability("CHW", CAP_CHW, 1);
306 add_capability("HOPS", CAP_HOPS, 1);
307 }
308
309 /* write_pidfile()
310 *
311 * inputs - filename+path of pid file
312 * output - NONE
313 * side effects - write the pid of the ircd to filename
314 */
315 static void
316 write_pidfile(const char *filename)
317 {
318 FILE *fb;
319
320 if ((fb = fopen(filename, "w")))
321 {
322 char buff[IRCD_BUFSIZE];
323 unsigned int pid = (unsigned int)getpid();
324
325 snprintf(buff, sizeof(buff), "%u\n", pid);
326
327 if ((fputs(buff, fb) == -1))
328 ilog(LOG_TYPE_IRCD, "Error writing %u to pid file %s (%s)",
329 pid, filename, strerror(errno));
330
331 fclose(fb);
332 }
333 else
334 {
335 ilog(LOG_TYPE_IRCD, "Error opening pid file %s", filename);
336 }
337 }
338
339 /* check_pidfile()
340 *
341 * inputs - filename+path of pid file
342 * output - none
343 * side effects - reads pid from pidfile and checks if ircd is in process
344 * list. if it is, gracefully exits
345 * -kre
346 */
347 static void
348 check_pidfile(const char *filename)
349 {
350 FILE *fb;
351 char buff[IRCD_BUFSIZE];
352 pid_t pidfromfile;
353
354 /* Don't do logging here, since we don't have log() initialised */
355 if ((fb = fopen(filename, "r")))
356 {
357 if (fgets(buff, 20, fb) == NULL)
358 {
359 /* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
360 * strerror(errno));
361 */
362 }
363 else
364 {
365 pidfromfile = atoi(buff);
366
367 if (!kill(pidfromfile, 0))
368 {
369 /* log(L_ERROR, "Server is already running"); */
370 printf("ircd: daemon is already running\n");
371 exit(-1);
372 }
373 }
374
375 fclose(fb);
376 }
377 else if (errno != ENOENT)
378 {
379 /* log(L_ERROR, "Error opening pid file %s", filename); */
380 }
381 }
382
383 /* setup_corefile()
384 *
385 * inputs - nothing
386 * output - nothing
387 * side effects - setups corefile to system limits.
388 * -kre
389 */
390 static void
391 setup_corefile(void)
392 {
393 #ifdef HAVE_SYS_RESOURCE_H
394 struct rlimit rlim; /* resource limits */
395
396 /* Set corefilesize to maximum */
397 if (!getrlimit(RLIMIT_CORE, &rlim))
398 {
399 rlim.rlim_cur = rlim.rlim_max;
400 setrlimit(RLIMIT_CORE, &rlim);
401 }
402 #endif
403 }
404
405 #ifdef HAVE_LIBCRYPTO
406 static int
407 always_accept_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
408 {
409 return 1;
410 }
411 #endif
412
413 /* init_ssl()
414 *
415 * inputs - nothing
416 * output - nothing
417 * side effects - setups SSL context.
418 */
419 static void
420 ssl_init(void)
421 {
422 #ifdef HAVE_LIBCRYPTO
423 const unsigned char session_id[] = "ircd-hybrid";
424
425 SSL_load_error_strings();
426 SSLeay_add_ssl_algorithms();
427
428 if ((ServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL)
429 {
430 const char *s = ERR_lib_error_string(ERR_get_error());
431
432 fprintf(stderr, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
433 ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
434 }
435
436 SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1);
437 SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_TLS_ROLLBACK_BUG);
438 SSL_CTX_set_verify(ServerInfo.server_ctx, SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,
439 always_accept_verify_cb);
440 SSL_CTX_set_session_id_context(ServerInfo.server_ctx, session_id, sizeof(session_id) - 1);
441
442 #if OPENSSL_VERSION_NUMBER >= 0x1000005FL && !defined(OPENSSL_NO_ECDH)
443 {
444 EC_KEY *key = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
445
446 if (key)
447 {
448 SSL_CTX_set_tmp_ecdh(ServerInfo.server_ctx, key);
449 EC_KEY_free(key);
450 }
451 }
452
453 SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_SINGLE_ECDH_USE);
454 #endif
455
456 if ((ServerInfo.client_ctx = SSL_CTX_new(SSLv23_client_method())) == NULL)
457 {
458 const char *s = ERR_lib_error_string(ERR_get_error());
459
460 fprintf(stderr, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
461 ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
462 }
463
464 SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1);
465 SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_TLS_ROLLBACK_BUG);
466 SSL_CTX_set_verify(ServerInfo.client_ctx, SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,
467 always_accept_verify_cb);
468 #endif /* HAVE_LIBCRYPTO */
469 }
470
471 int
472 main(int argc, char *argv[])
473 {
474 /* Check to see if the user is running us as root, which is a nono */
475 if (geteuid() == 0)
476 {
477 fprintf(stderr, "ERROR: This server won't run as root/superuser\n");
478 return -1;
479 }
480
481 /* Setup corefile size immediately after boot -kre */
482 setup_corefile();
483
484 /* save server boot time right away, so getrusage works correctly */
485 set_time();
486
487 /* It ain't random, but it ought to be a little harder to guess */
488 init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec | (getpid() << 20)));
489
490 me.localClient = &meLocalUser;
491 dlinkAdd(&me, &me.node, &global_client_list); /* Pointer to beginning
492 of Client list */
493 ConfigLoggingEntry.use_logging = 1;
494 ConfigFileEntry.dpath = DPATH;
495 ConfigFileEntry.spath = SPATH;
496 ConfigFileEntry.mpath = MPATH;
497 ConfigFileEntry.configfile = CPATH; /* Server configuration file */
498 ConfigFileEntry.klinefile = KPATH; /* Server kline file */
499 ConfigFileEntry.glinefile = GPATH; /* Server gline file */
500 ConfigFileEntry.xlinefile = XPATH; /* Server xline file */
501 ConfigFileEntry.dlinefile = DLPATH; /* dline file */
502 ConfigFileEntry.resvfile = RESVPATH; /* resv file */
503
504 myargv = argv;
505 umask(077); /* better safe than sorry --SRB */
506
507 parseargs(&argc, &argv, myopts);
508
509 if (printVersion)
510 {
511 printf("ircd: version %s(%s)\n", ircd_version, serno);
512 exit(EXIT_SUCCESS);
513 }
514
515 if (chdir(ConfigFileEntry.dpath))
516 {
517 perror("chdir");
518 exit(EXIT_FAILURE);
519 }
520
521 ssl_init();
522
523 if (!server_state.foreground)
524 {
525 make_daemon();
526 close_standard_fds(); /* this needs to be before init_netio()! */
527 }
528 else
529 print_startup(getpid());
530
531 setup_signals();
532
533 /* We need this to initialise the fd array before anything else */
534 fdlist_init();
535 log_set_file(LOG_TYPE_IRCD, 0, logFileName);
536 check_can_use_v6();
537 init_netio(); /* This needs to be setup early ! -- adrian */
538
539 /* Check if there is pidfile and daemon already running */
540 check_pidfile(pidFileName);
541
542 mp_pool_init();
543 init_dlink_nodes();
544 init_isupport();
545 dbuf_init();
546 hash_init();
547 init_ip_hash_table(); /* client host ip hash table */
548 init_host_hash(); /* Host-hashtable. */
549 client_init();
550 class_init();
551 whowas_init();
552 watch_init();
553 auth_init(); /* Initialise the auth code */
554 init_resolver(); /* Needs to be setup before the io loop */
555 modules_init();
556 read_conf_files(1); /* cold start init conf files */
557 init_uid();
558 initialize_server_capabs(); /* Set up default_server_capabs */
559 initialize_global_set_options();
560 channel_init();
561 read_links_file();
562 motd_init();
563 #ifdef HAVE_LIBGEOIP
564 geoip_ctx = GeoIP_new(GEOIP_MEMORY_CACHE);
565 #endif
566
567 if (EmptyString(ServerInfo.sid))
568 {
569 ilog(LOG_TYPE_IRCD, "ERROR: No server id specified in serverinfo block.");
570 exit(EXIT_FAILURE);
571 }
572
573 strlcpy(me.id, ServerInfo.sid, sizeof(me.id));
574
575 if (EmptyString(ServerInfo.name))
576 {
577 ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
578 exit(EXIT_FAILURE);
579 }
580
581 strlcpy(me.name, ServerInfo.name, sizeof(me.name));
582
583 /* serverinfo{} description must exist. If not, error out.*/
584 if (EmptyString(ServerInfo.description))
585 {
586 ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
587 exit(EXIT_FAILURE);
588 }
589
590 strlcpy(me.info, ServerInfo.description, sizeof(me.info));
591
592 me.from = &me;
593 me.servptr = &me;
594 me.localClient->lasttime = CurrentTime;
595 me.localClient->since = CurrentTime;
596 me.localClient->firsttime = CurrentTime;
597
598 SetMe(&me);
599 make_server(&me);
600
601 hash_add_id(&me);
602 hash_add_client(&me);
603
604 /* add ourselves to global_serv_list */
605 dlinkAdd(&me, make_dlink_node(), &global_serv_list);
606
607 load_kline_database();
608 load_dline_database();
609 load_gline_database();
610 load_xline_database();
611 load_resv_database();
612
613 if (chdir(MODPATH))
614 {
615 ilog(LOG_TYPE_IRCD, "Could not load core modules. Terminating!");
616 exit(EXIT_FAILURE);
617 }
618
619 load_all_modules(1);
620 load_conf_modules();
621 load_core_modules(1);
622
623 /* Go back to DPATH after checking to see if we can chdir to MODPATH */
624 if (chdir(ConfigFileEntry.dpath))
625 {
626 perror("chdir");
627 exit(EXIT_FAILURE);
628 }
629
630 /*
631 * assemble_umode_buffer() has to be called after
632 * reading conf/loading modules.
633 */
634 assemble_umode_buffer();
635
636 write_pidfile(pidFileName);
637
638 ilog(LOG_TYPE_IRCD, "Server Ready");
639
640 event_addish(&event_cleanup_glines, NULL);
641 event_addish(&event_cleanup_tklines, NULL);
642
643 /* We want try_connections to be called as soon as possible now! -- adrian */
644 /* No, 'cause after a restart it would cause all sorts of nick collides */
645 event_addish(&event_try_connections, NULL);
646
647 /* Setup the timeout check. I'll shift it later :) -- adrian */
648 event_addish(&event_comm_checktimeouts, NULL);
649
650 event_addish(&event_save_all_databases, NULL);
651
652 if (ConfigServerHide.links_delay > 0)
653 {
654 event_write_links_file.when = ConfigServerHide.links_delay;
655 event_addish(&event_write_links_file, NULL);
656 }
657 else
658 ConfigServerHide.links_disabled = 1;
659
660 if (splitmode)
661 event_addish(&splitmode_event, NULL);
662
663 io_loop();
664 return 0;
665 }

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