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root/svn/ircd-hybrid/trunk/src/ircd.c
Revision: 1286
Committed: Sun Feb 5 15:20:03 2012 UTC (13 years, 6 months ago) by michael
Content type: text/x-csrc
Original Path: ircd-hybrid-8/src/ircd.c
File size: 17385 byte(s)
Log Message:
- ircd.c: fix compile warning

File Contents

# Content
1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * ircd.c: Starts up and runs the ircd.
4 *
5 * Copyright (C) 2002 by the past and present ircd coders, and others.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 * USA
21 *
22 * $Id$
23 */
24
25 #include "stdinc.h"
26 #include "s_user.h"
27 #include "list.h"
28 #include "ircd.h"
29 #include "channel.h"
30 #include "channel_mode.h"
31 #include "client.h"
32 #include "event.h"
33 #include "fdlist.h"
34 #include "hash.h"
35 #include "irc_string.h"
36 #include "ircd_signal.h"
37 #include "s_gline.h"
38 #include "motd.h"
39 #include "hostmask.h"
40 #include "numeric.h"
41 #include "packet.h"
42 #include "parse.h"
43 #include "irc_res.h"
44 #include "restart.h"
45 #include "rng_mt.h"
46 #include "s_auth.h"
47 #include "s_bsd.h"
48 #include "s_conf.h"
49 #include "s_log.h"
50 #include "s_misc.h"
51 #include "s_serv.h" /* try_connections */
52 #include "send.h"
53 #include "whowas.h"
54 #include "modules.h"
55 #include "memory.h"
56 #include "hook.h"
57 #include "ircd_getopt.h"
58 #include "balloc.h"
59 #include "motd.h"
60 #include "supported.h"
61 #include "watch.h"
62
63
64 /* /quote set variables */
65 struct SetOptions GlobalSetOptions;
66
67 /* configuration set from ircd.conf */
68 struct config_file_entry ConfigFileEntry;
69 /* server info set from ircd.conf */
70 struct server_info ServerInfo;
71 /* admin info set from ircd.conf */
72 struct admin_info AdminInfo = { NULL, NULL, NULL };
73 struct Counter Count = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
74 struct ServerState_t server_state = { 0 };
75 struct logging_entry ConfigLoggingEntry = { 1, 1 };
76 struct ServerStatistics ServerStats;
77 struct timeval SystemTime;
78 struct Client me; /* That's me */
79 struct LocalUser meLocalUser; /* That's also part of me */
80
81 const char *logFileName = LPATH;
82 const char *pidFileName = PPATH;
83
84 char **myargv;
85 char ircd_platform[PLATFORMLEN];
86
87 int dorehash = 0;
88 int doremotd = 0;
89
90 /* Set to zero because it should be initialized later using
91 * initialize_server_capabs
92 */
93 int default_server_capabs = 0;
94
95 #ifdef HAVE_LIBCRYPTO
96 int bio_spare_fd = -1;
97 #endif
98
99 unsigned int splitmode;
100 unsigned int splitchecking;
101 unsigned int split_users;
102 unsigned int split_servers;
103
104 /* Do klines the same way hybrid-6 did them, i.e. at the
105 * top of the next io_loop instead of in the same loop as
106 * the klines are being applied.
107 *
108 * This should fix strange CPU starvation as very indirectly reported.
109 * (Why do you people not email bug reports? WHY? WHY?)
110 *
111 * - Dianora
112 */
113
114 int rehashed_klines = 0;
115
116
117 /*
118 * print_startup - print startup information
119 */
120 static void
121 print_startup(int pid)
122 {
123 printf("ircd: version %s\n", ircd_version);
124 printf("ircd: pid %d\n", pid);
125 printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
126 : "foreground", ConfigFileEntry.dpath);
127 }
128
129 static void
130 make_daemon(void)
131 {
132 int pid;
133
134 if ((pid = fork()) < 0)
135 {
136 perror("fork");
137 exit(EXIT_FAILURE);
138 }
139 else if (pid > 0)
140 {
141 print_startup(pid);
142 exit(EXIT_SUCCESS);
143 }
144
145 setsid();
146 }
147
148 static int printVersion = 0;
149
150 struct lgetopt myopts[] = {
151 {"dlinefile", &ConfigFileEntry.dlinefile,
152 STRING, "File to use for dline.conf"},
153 {"configfile", &ConfigFileEntry.configfile,
154 STRING, "File to use for ircd.conf"},
155 {"klinefile", &ConfigFileEntry.klinefile,
156 STRING, "File to use for kline.conf"},
157 {"xlinefile", &ConfigFileEntry.xlinefile,
158 STRING, "File to use for xline.conf"},
159 {"logfile", &logFileName,
160 STRING, "File to use for ircd.log"},
161 {"pidfile", &pidFileName,
162 STRING, "File to use for process ID"},
163 {"foreground", &server_state.foreground,
164 YESNO, "Run in foreground (don't detach)"},
165 {"version", &printVersion,
166 YESNO, "Print version and exit"},
167 {"help", NULL, USAGE, "Print this text"},
168 {NULL, NULL, STRING, NULL},
169 };
170
171 void
172 set_time(void)
173 {
174 static char to_send[200];
175 struct timeval newtime;
176 newtime.tv_sec = 0;
177 newtime.tv_usec = 0;
178
179 if (gettimeofday(&newtime, NULL) == -1)
180 {
181 ilog(LOG_TYPE_IRCD, "Clock Failure (%s), TS can be corrupted",
182 strerror(errno));
183 sendto_realops_flags(UMODE_ALL, L_ALL,
184 "Clock Failure (%s), TS can be corrupted",
185 strerror(errno));
186 restart("Clock Failure");
187 }
188
189 if (newtime.tv_sec < CurrentTime)
190 {
191 snprintf(to_send, sizeof(to_send),
192 "System clock is running backwards - (%lu < %lu)",
193 (unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
194 report_error(L_ALL, to_send, me.name, 0);
195 set_back_events(CurrentTime - newtime.tv_sec);
196 }
197
198 SystemTime.tv_sec = newtime.tv_sec;
199 SystemTime.tv_usec = newtime.tv_usec;
200 }
201
202 static void
203 io_loop(void)
204 {
205 while (1 == 1)
206 {
207 /*
208 * Maybe we want a flags word?
209 * ie. if (REHASHED_KLINES(global_flags))
210 * SET_REHASHED_KLINES(global_flags)
211 * CLEAR_REHASHED_KLINES(global_flags)
212 *
213 * - Dianora
214 */
215 if (rehashed_klines)
216 {
217 check_conf_klines();
218 rehashed_klines = 0;
219 }
220
221 if (listing_client_list.head)
222 {
223 dlink_node *ptr = NULL, *ptr_next = NULL;
224 DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
225 {
226 struct Client *client_p = ptr->data;
227 assert(client_p->localClient->list_task);
228 safe_list_channels(client_p, client_p->localClient->list_task, 0);
229 }
230 }
231
232 /* Run pending events, then get the number of seconds to the next
233 * event
234 */
235 while (eventNextTime() <= CurrentTime)
236 eventRun();
237
238 comm_select();
239 exit_aborted_clients();
240 free_exited_clients();
241 send_queued_all();
242
243 /* Check to see whether we have to rehash the configuration .. */
244 if (dorehash)
245 {
246 rehash(1);
247 dorehash = 0;
248 }
249 if (doremotd)
250 {
251 read_message_file(&ConfigFileEntry.motd);
252 sendto_realops_flags(UMODE_ALL, L_ALL,
253 "Got signal SIGUSR1, reloading ircd motd file");
254 doremotd = 0;
255 }
256 }
257 }
258
259 /* initalialize_global_set_options()
260 *
261 * inputs - none
262 * output - none
263 * side effects - This sets all global set options needed
264 */
265 static void
266 initialize_global_set_options(void)
267 {
268 memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));
269
270 GlobalSetOptions.autoconn = 1;
271 GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
272 GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
273
274 if (ConfigFileEntry.default_floodcount)
275 GlobalSetOptions.floodcount = ConfigFileEntry.default_floodcount;
276 else
277 GlobalSetOptions.floodcount = 10;
278
279 /* XXX I have no idea what to try here - Dianora */
280 GlobalSetOptions.joinfloodcount = 16;
281 GlobalSetOptions.joinfloodtime = 8;
282
283 split_servers = ConfigChannel.default_split_server_count;
284 split_users = ConfigChannel.default_split_user_count;
285
286 if (split_users && split_servers && (ConfigChannel.no_create_on_split ||
287 ConfigChannel.no_join_on_split))
288 {
289 splitmode = 1;
290 splitchecking = 1;
291 }
292
293 GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
294 /* End of global set options */
295 }
296
297 /* initialize_message_files()
298 *
299 * inputs - none
300 * output - none
301 * side effects - Set up all message files needed, motd etc.
302 */
303 static void
304 initialize_message_files(void)
305 {
306 init_message_file(USER_MOTD, MPATH, &ConfigFileEntry.motd);
307 init_message_file(OPER_MOTD, OPATH, &ConfigFileEntry.opermotd);
308 init_message_file(USER_LINKS, LIPATH, &ConfigFileEntry.linksfile);
309
310 read_message_file(&ConfigFileEntry.motd);
311 read_message_file(&ConfigFileEntry.opermotd);
312 read_message_file(&ConfigFileEntry.linksfile);
313
314 init_isupport();
315 }
316
317 /* initialize_server_capabs()
318 *
319 * inputs - none
320 * output - none
321 */
322 static void
323 initialize_server_capabs(void)
324 {
325 add_capability("QS", CAP_QS, 1);
326 add_capability("EOB", CAP_EOB, 1);
327 add_capability("TS6", CAP_TS6, 0);
328 add_capability("ZIP", CAP_ZIP, 0);
329 add_capability("CLUSTER", CAP_CLUSTER, 1);
330 add_capability("SVS", CAP_SVS, 1);
331 #ifdef HALFOPS
332 add_capability("HOPS", CAP_HOPS, 1);
333 #endif
334 }
335
336 /* write_pidfile()
337 *
338 * inputs - filename+path of pid file
339 * output - NONE
340 * side effects - write the pid of the ircd to filename
341 */
342 static void
343 write_pidfile(const char *filename)
344 {
345 FBFILE *fb;
346
347 if ((fb = fbopen(filename, "w")))
348 {
349 char buff[32];
350 unsigned int pid = (unsigned int)getpid();
351 size_t nbytes = snprintf(buff, sizeof(buff), "%u\n", pid);
352
353 if ((fbputs(buff, fb, nbytes) == -1))
354 ilog(LOG_TYPE_IRCD, "Error writing %u to pid file %s (%s)",
355 pid, filename, strerror(errno));
356
357 fbclose(fb);
358 return;
359 }
360 else
361 {
362 ilog(LOG_TYPE_IRCD, "Error opening pid file %s", filename);
363 }
364 }
365
366 /* check_pidfile()
367 *
368 * inputs - filename+path of pid file
369 * output - none
370 * side effects - reads pid from pidfile and checks if ircd is in process
371 * list. if it is, gracefully exits
372 * -kre
373 */
374 static void
375 check_pidfile(const char *filename)
376 {
377 FBFILE *fb;
378 char buff[32];
379 pid_t pidfromfile;
380
381 /* Don't do logging here, since we don't have log() initialised */
382 if ((fb = fbopen(filename, "r")))
383 {
384 if (fbgets(buff, 20, fb) == NULL)
385 {
386 /* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
387 * strerror(errno));
388 */
389 }
390 else
391 {
392 pidfromfile = atoi(buff);
393
394 if (!kill(pidfromfile, 0))
395 {
396 /* log(L_ERROR, "Server is already running"); */
397 printf("ircd: daemon is already running\n");
398 exit(-1);
399 }
400 }
401
402 fbclose(fb);
403 }
404 else if (errno != ENOENT)
405 {
406 /* log(L_ERROR, "Error opening pid file %s", filename); */
407 }
408 }
409
410 /* setup_corefile()
411 *
412 * inputs - nothing
413 * output - nothing
414 * side effects - setups corefile to system limits.
415 * -kre
416 */
417 static void
418 setup_corefile(void)
419 {
420 #ifdef HAVE_SYS_RESOURCE_H
421 struct rlimit rlim; /* resource limits */
422
423 /* Set corefilesize to maximum */
424 if (!getrlimit(RLIMIT_CORE, &rlim))
425 {
426 rlim.rlim_cur = rlim.rlim_max;
427 setrlimit(RLIMIT_CORE, &rlim);
428 }
429 #endif
430 }
431
432 /* init_ssl()
433 *
434 * inputs - nothing
435 * output - nothing
436 * side effects - setups SSL context.
437 */
438 static void
439 init_ssl(void)
440 {
441 #ifdef HAVE_LIBCRYPTO
442 SSL_load_error_strings();
443 SSLeay_add_ssl_algorithms();
444
445 if ((ServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL)
446 {
447 const char *s;
448
449 fprintf(stderr, "ERROR: Could not initialize the SSL context -- %s\n",
450 s = ERR_lib_error_string(ERR_get_error()));
451 ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL context -- %s\n", s);
452 }
453
454 SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_NO_SSLv2);
455 SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_TLS_ROLLBACK_BUG|SSL_OP_ALL);
456 SSL_CTX_set_verify(ServerInfo.server_ctx, SSL_VERIFY_NONE, NULL);
457
458 bio_spare_fd = save_spare_fd("SSL private key validation");
459 #endif /* HAVE_LIBCRYPTO */
460 }
461
462 /* init_callbacks()
463 *
464 * inputs - nothing
465 * output - nothing
466 * side effects - setups standard hook points
467 */
468 static void
469 init_callbacks(void)
470 {
471 iorecv_cb = register_callback("iorecv", iorecv_default);
472 iosend_cb = register_callback("iosend", iosend_default);
473 iorecvctrl_cb = register_callback("iorecvctrl", NULL);
474 iosendctrl_cb = register_callback("iosendctrl", NULL);
475 }
476
477 int
478 main(int argc, char *argv[])
479 {
480 /* Check to see if the user is running
481 * us as root, which is a nono
482 */
483 if (geteuid() == 0)
484 {
485 fprintf(stderr, "Don't run ircd as root!!!\n");
486 return -1;
487 }
488
489 /* Setup corefile size immediately after boot -kre */
490 setup_corefile();
491
492 /* save server boot time right away, so getrusage works correctly */
493 set_time();
494
495 /* It ain't random, but it ought to be a little harder to guess */
496 init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec | (getpid() << 20)));
497
498 me.localClient = &meLocalUser;
499 dlinkAdd(&me, &me.node, &global_client_list); /* Pointer to beginning
500 of Client list */
501 /* Initialise the channel capability usage counts... */
502 init_chcap_usage_counts();
503
504 ConfigFileEntry.dpath = DPATH;
505 ConfigFileEntry.configfile = CPATH; /* Server configuration file */
506 ConfigFileEntry.klinefile = KPATH; /* Server kline file */
507 ConfigFileEntry.xlinefile = XPATH; /* Server xline file */
508 ConfigFileEntry.rxlinefile = RXPATH; /* Server regex xline file */
509 ConfigFileEntry.rklinefile = RKPATH; /* Server regex kline file */
510 ConfigFileEntry.dlinefile = DLPATH; /* dline file */
511 ConfigFileEntry.glinefile = GPATH; /* gline log file */
512 ConfigFileEntry.cresvfile = CRESVPATH; /* channel resv file */
513 ConfigFileEntry.nresvfile = NRESVPATH; /* nick resv file */
514 myargv = argv;
515 umask(077); /* better safe than sorry --SRB */
516
517 parseargs(&argc, &argv, myopts);
518
519 if (printVersion)
520 {
521 printf("ircd: version %s\n", ircd_version);
522 exit(EXIT_SUCCESS);
523 }
524
525 if (chdir(ConfigFileEntry.dpath))
526 {
527 perror("chdir");
528 exit(EXIT_FAILURE);
529 }
530
531 init_ssl();
532
533 if (!server_state.foreground)
534 {
535 make_daemon();
536 close_standard_fds(); /* this needs to be before init_netio()! */
537 }
538 else
539 print_startup(getpid());
540
541 setup_signals();
542
543 get_ircd_platform(ircd_platform);
544
545 /* Init the event subsystem */
546 eventInit();
547 /* We need this to initialise the fd array before anything else */
548 fdlist_init();
549 log_add_file(LOG_TYPE_IRCD, 0, logFileName);
550 check_can_use_v6();
551 init_comm(); /* This needs to be setup early ! -- adrian */
552 /* Check if there is pidfile and daemon already running */
553 check_pidfile(pidFileName);
554
555 initBlockHeap();
556 init_dlink_nodes();
557 init_callbacks();
558 initialize_message_files();
559 dbuf_init();
560 init_hash();
561 init_ip_hash_table(); /* client host ip hash table */
562 init_host_hash(); /* Host-hashtable. */
563 clear_tree_parse();
564 init_client();
565 init_class();
566 init_whowas();
567 watch_init();
568 init_auth(); /* Initialise the auth code */
569 init_resolver(); /* Needs to be setup before the io loop */
570 read_conf_files(1); /* cold start init conf files */
571 init_uid();
572 initialize_server_capabs(); /* Set up default_server_capabs */
573 initialize_global_set_options();
574 init_channels();
575
576 if (EmptyString(ServerInfo.sid))
577 {
578 ilog(LOG_TYPE_IRCD, "ERROR: No server id specified in serverinfo block.");
579 exit(EXIT_FAILURE);
580 }
581
582 strlcpy(me.id, ServerInfo.sid, sizeof(me.id));
583
584 if (EmptyString(ServerInfo.name))
585 {
586 ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
587 exit(EXIT_FAILURE);
588 }
589
590 strlcpy(me.name, ServerInfo.name, sizeof(me.name));
591
592 /* serverinfo{} description must exist. If not, error out.*/
593 if (EmptyString(ServerInfo.description))
594 {
595 ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
596 exit(EXIT_FAILURE);
597 }
598
599 strlcpy(me.info, ServerInfo.description, sizeof(me.info));
600
601 me.from = &me;
602 me.servptr = &me;
603 me.localClient->lasttime = CurrentTime;
604 me.localClient->since = CurrentTime;
605 me.localClient->firsttime = CurrentTime;
606
607 SetMe(&me);
608 make_server(&me);
609
610 hash_add_id(&me);
611 hash_add_client(&me);
612
613 /* add ourselves to global_serv_list */
614 dlinkAdd(&me, make_dlink_node(), &global_serv_list);
615
616 if (chdir(MODPATH))
617 {
618 ilog(LOG_TYPE_IRCD, "Could not load core modules. Terminating!");
619 exit(EXIT_FAILURE);
620 }
621
622 load_all_modules(1);
623 load_conf_modules();
624 load_core_modules(1);
625
626 /* Go back to DPATH after checking to see if we can chdir to MODPATH */
627 if (chdir(ConfigFileEntry.dpath))
628 {
629 perror("chdir");
630 exit(EXIT_FAILURE);
631 }
632
633 /*
634 * assemble_umode_buffer() has to be called after
635 * reading conf/loading modules.
636 */
637 assemble_umode_buffer();
638
639 write_pidfile(pidFileName);
640
641 ilog(LOG_TYPE_IRCD, "Server Ready");
642
643 eventAddIsh("cleanup_glines", cleanup_glines, NULL, CLEANUP_GLINES_TIME);
644 eventAddIsh("cleanup_tklines", cleanup_tklines, NULL, CLEANUP_TKLINES_TIME);
645
646 /* We want try_connections to be called as soon as possible now! -- adrian */
647 /* No, 'cause after a restart it would cause all sorts of nick collides */
648 eventAddIsh("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);
649
650 eventAddIsh("collect_zipstats", collect_zipstats, NULL, ZIPSTATS_TIME);
651
652 /* Setup the timeout check. I'll shift it later :) -- adrian */
653 eventAddIsh("comm_checktimeouts", comm_checktimeouts, NULL, 1);
654
655 if (ConfigServerHide.links_delay > 0)
656 eventAddIsh("write_links_file", write_links_file, NULL, ConfigServerHide.links_delay);
657 else
658 ConfigServerHide.links_disabled = 1;
659
660 if (splitmode)
661 eventAddIsh("check_splitmode", check_splitmode, NULL, 60);
662
663 io_loop();
664 return 0;
665 }

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