/[svn]/ircd-hybrid-8/src/ircd.c
ViewVC logotype

Contents of /ircd-hybrid-8/src/ircd.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1518 - (show annotations)
Sun Sep 2 16:50:40 2012 UTC (7 years, 3 months ago) by michael
File MIME type: text/x-chdr
File size: 17237 byte(s)
- Removed rkline.conf and rxline.conf leftovers. Regular expression based
  k- and x-lines can be set via ircd.conf only.

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 "conf.h"
49 #include "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 = { .use_logging = 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
86 int dorehash = 0;
87 int doremotd = 0;
88
89 /* Set to zero because it should be initialized later using
90 * initialize_server_capabs
91 */
92 int default_server_capabs = 0;
93 unsigned int splitmode;
94 unsigned int splitchecking;
95 unsigned int split_users;
96 unsigned int split_servers;
97
98 /* Do klines the same way hybrid-6 did them, i.e. at the
99 * top of the next io_loop instead of in the same loop as
100 * the klines are being applied.
101 *
102 * This should fix strange CPU starvation as very indirectly reported.
103 * (Why do you people not email bug reports? WHY? WHY?)
104 *
105 * - Dianora
106 */
107
108 int rehashed_klines = 0;
109
110
111 /*
112 * print_startup - print startup information
113 */
114 static void
115 print_startup(int pid)
116 {
117 printf("ircd: version %s\n", ircd_version);
118 printf("ircd: pid %d\n", pid);
119 printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
120 : "foreground", ConfigFileEntry.dpath);
121 }
122
123 static void
124 make_daemon(void)
125 {
126 int pid;
127
128 if ((pid = fork()) < 0)
129 {
130 perror("fork");
131 exit(EXIT_FAILURE);
132 }
133 else if (pid > 0)
134 {
135 print_startup(pid);
136 exit(EXIT_SUCCESS);
137 }
138
139 setsid();
140 }
141
142 static int printVersion = 0;
143
144 static struct lgetopt myopts[] = {
145 {"dlinefile", &ConfigFileEntry.dlinefile,
146 STRING, "File to use for dline.conf"},
147 {"configfile", &ConfigFileEntry.configfile,
148 STRING, "File to use for ircd.conf"},
149 {"klinefile", &ConfigFileEntry.klinefile,
150 STRING, "File to use for kline.conf"},
151 {"xlinefile", &ConfigFileEntry.xlinefile,
152 STRING, "File to use for xline.conf"},
153 {"logfile", &logFileName,
154 STRING, "File to use for ircd.log"},
155 {"pidfile", &pidFileName,
156 STRING, "File to use for process ID"},
157 {"foreground", &server_state.foreground,
158 YESNO, "Run in foreground (don't detach)"},
159 {"version", &printVersion,
160 YESNO, "Print version and exit"},
161 {"help", NULL, USAGE, "Print this text"},
162 {NULL, NULL, STRING, NULL},
163 };
164
165 void
166 set_time(void)
167 {
168 static char to_send[200];
169 struct timeval newtime;
170 newtime.tv_sec = 0;
171 newtime.tv_usec = 0;
172
173 if (gettimeofday(&newtime, NULL) == -1)
174 {
175 ilog(LOG_TYPE_IRCD, "Clock Failure (%s), TS can be corrupted",
176 strerror(errno));
177 sendto_realops_flags(UMODE_ALL, L_ALL,
178 "Clock Failure (%s), TS can be corrupted",
179 strerror(errno));
180 restart("Clock Failure");
181 }
182
183 if (newtime.tv_sec < CurrentTime)
184 {
185 snprintf(to_send, sizeof(to_send),
186 "System clock is running backwards - (%lu < %lu)",
187 (unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
188 report_error(L_ALL, to_send, me.name, 0);
189 set_back_events(CurrentTime - newtime.tv_sec);
190 }
191
192 SystemTime.tv_sec = newtime.tv_sec;
193 SystemTime.tv_usec = newtime.tv_usec;
194 }
195
196 static void
197 io_loop(void)
198 {
199 while (1 == 1)
200 {
201 /*
202 * Maybe we want a flags word?
203 * ie. if (REHASHED_KLINES(global_flags))
204 * SET_REHASHED_KLINES(global_flags)
205 * CLEAR_REHASHED_KLINES(global_flags)
206 *
207 * - Dianora
208 */
209 if (rehashed_klines)
210 {
211 check_conf_klines();
212 rehashed_klines = 0;
213 }
214
215 if (listing_client_list.head)
216 {
217 dlink_node *ptr = NULL, *ptr_next = NULL;
218 DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
219 {
220 struct Client *client_p = ptr->data;
221 assert(client_p->localClient->list_task);
222 safe_list_channels(client_p, client_p->localClient->list_task, 0);
223 }
224 }
225
226 /* Run pending events, then get the number of seconds to the next
227 * event
228 */
229 while (eventNextTime() <= CurrentTime)
230 eventRun();
231
232 comm_select();
233 exit_aborted_clients();
234 free_exited_clients();
235 send_queued_all();
236
237 /* Check to see whether we have to rehash the configuration .. */
238 if (dorehash)
239 {
240 rehash(1);
241 dorehash = 0;
242 }
243 if (doremotd)
244 {
245 read_message_file(&ConfigFileEntry.motd);
246 sendto_realops_flags(UMODE_ALL, L_ALL,
247 "Got signal SIGUSR1, reloading ircd motd file");
248 doremotd = 0;
249 }
250 }
251 }
252
253 /* initalialize_global_set_options()
254 *
255 * inputs - none
256 * output - none
257 * side effects - This sets all global set options needed
258 */
259 static void
260 initialize_global_set_options(void)
261 {
262 memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));
263
264 GlobalSetOptions.autoconn = 1;
265 GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
266 GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
267
268 if (ConfigFileEntry.default_floodcount)
269 GlobalSetOptions.floodcount = ConfigFileEntry.default_floodcount;
270 else
271 GlobalSetOptions.floodcount = 10;
272
273 /* XXX I have no idea what to try here - Dianora */
274 GlobalSetOptions.joinfloodcount = 16;
275 GlobalSetOptions.joinfloodtime = 8;
276
277 split_servers = ConfigChannel.default_split_server_count;
278 split_users = ConfigChannel.default_split_user_count;
279
280 if (split_users && split_servers && (ConfigChannel.no_create_on_split ||
281 ConfigChannel.no_join_on_split))
282 {
283 splitmode = 1;
284 splitchecking = 1;
285 }
286
287 GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
288 /* End of global set options */
289 }
290
291 /* initialize_message_files()
292 *
293 * inputs - none
294 * output - none
295 * side effects - Set up all message files needed, motd etc.
296 */
297 static void
298 initialize_message_files(void)
299 {
300 init_message_file(USER_MOTD, MPATH, &ConfigFileEntry.motd);
301 init_message_file(USER_LINKS, LIPATH, &ConfigFileEntry.linksfile);
302
303 read_message_file(&ConfigFileEntry.motd);
304 read_message_file(&ConfigFileEntry.linksfile);
305
306 init_isupport();
307 }
308
309 /* initialize_server_capabs()
310 *
311 * inputs - none
312 * output - none
313 */
314 static void
315 initialize_server_capabs(void)
316 {
317 add_capability("QS", CAP_QS, 1);
318 add_capability("EOB", CAP_EOB, 1);
319 add_capability("TS6", CAP_TS6, 0);
320 add_capability("CLUSTER", CAP_CLUSTER, 1);
321 add_capability("SVS", CAP_SVS, 1);
322 #ifdef HALFOPS
323 add_capability("HOPS", CAP_HOPS, 1);
324 #endif
325 }
326
327 /* write_pidfile()
328 *
329 * inputs - filename+path of pid file
330 * output - NONE
331 * side effects - write the pid of the ircd to filename
332 */
333 static void
334 write_pidfile(const char *filename)
335 {
336 FILE *fb;
337
338 if ((fb = fopen(filename, "w")))
339 {
340 char buff[32];
341 unsigned int pid = (unsigned int)getpid();
342
343 snprintf(buff, sizeof(buff), "%u\n", pid);
344
345 if ((fputs(buff, fb) == -1))
346 ilog(LOG_TYPE_IRCD, "Error writing %u to pid file %s (%s)",
347 pid, filename, strerror(errno));
348
349 fclose(fb);
350 }
351 else
352 {
353 ilog(LOG_TYPE_IRCD, "Error opening pid file %s", filename);
354 }
355 }
356
357 /* check_pidfile()
358 *
359 * inputs - filename+path of pid file
360 * output - none
361 * side effects - reads pid from pidfile and checks if ircd is in process
362 * list. if it is, gracefully exits
363 * -kre
364 */
365 static void
366 check_pidfile(const char *filename)
367 {
368 FILE *fb;
369 char buff[32];
370 pid_t pidfromfile;
371
372 /* Don't do logging here, since we don't have log() initialised */
373 if ((fb = fopen(filename, "r")))
374 {
375 if (fgets(buff, 20, fb) == NULL)
376 {
377 /* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
378 * strerror(errno));
379 */
380 }
381 else
382 {
383 pidfromfile = atoi(buff);
384
385 if (!kill(pidfromfile, 0))
386 {
387 /* log(L_ERROR, "Server is already running"); */
388 printf("ircd: daemon is already running\n");
389 exit(-1);
390 }
391 }
392
393 fclose(fb);
394 }
395 else if (errno != ENOENT)
396 {
397 /* log(L_ERROR, "Error opening pid file %s", filename); */
398 }
399 }
400
401 /* setup_corefile()
402 *
403 * inputs - nothing
404 * output - nothing
405 * side effects - setups corefile to system limits.
406 * -kre
407 */
408 static void
409 setup_corefile(void)
410 {
411 #ifdef HAVE_SYS_RESOURCE_H
412 struct rlimit rlim; /* resource limits */
413
414 /* Set corefilesize to maximum */
415 if (!getrlimit(RLIMIT_CORE, &rlim))
416 {
417 rlim.rlim_cur = rlim.rlim_max;
418 setrlimit(RLIMIT_CORE, &rlim);
419 }
420 #endif
421 }
422
423 /* init_ssl()
424 *
425 * inputs - nothing
426 * output - nothing
427 * side effects - setups SSL context.
428 */
429 static void
430 init_ssl(void)
431 {
432 #ifdef HAVE_LIBCRYPTO
433 SSL_load_error_strings();
434 SSLeay_add_ssl_algorithms();
435
436 if ((ServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL)
437 {
438 const char *s;
439
440 fprintf(stderr, "ERROR: Could not initialize the SSL Server context -- %s\n",
441 s = ERR_lib_error_string(ERR_get_error()));
442 ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
443 }
444
445 SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1);
446 SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_TLS_ROLLBACK_BUG|SSL_OP_ALL);
447 SSL_CTX_set_verify(ServerInfo.server_ctx, SSL_VERIFY_NONE, NULL);
448
449 if ((ServerInfo.client_ctx = SSL_CTX_new(SSLv23_client_method())) == NULL)
450 {
451 const char *s;
452
453 fprintf(stderr, "ERROR: Could not initialize the SSL Client context -- %s\n",
454 s = ERR_lib_error_string(ERR_get_error()));
455 ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
456 }
457
458 SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1);
459 SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_TLS_ROLLBACK_BUG|SSL_OP_ALL);
460 SSL_CTX_set_verify(ServerInfo.client_ctx, SSL_VERIFY_NONE, NULL);
461 #endif /* HAVE_LIBCRYPTO */
462 }
463
464 /* init_callbacks()
465 *
466 * inputs - nothing
467 * output - nothing
468 * side effects - setups standard hook points
469 */
470 static void
471 init_callbacks(void)
472 {
473 iorecv_cb = register_callback("iorecv", iorecv_default);
474 iosend_cb = register_callback("iosend", iosend_default);
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.dlinefile = DLPATH; /* dline file */
509 ConfigFileEntry.cresvfile = CRESVPATH; /* channel resv file */
510 ConfigFileEntry.nresvfile = NRESVPATH; /* nick resv file */
511 myargv = argv;
512 umask(077); /* better safe than sorry --SRB */
513
514 parseargs(&argc, &argv, myopts);
515
516 if (printVersion)
517 {
518 printf("ircd: version %s\n", ircd_version);
519 exit(EXIT_SUCCESS);
520 }
521
522 if (chdir(ConfigFileEntry.dpath))
523 {
524 perror("chdir");
525 exit(EXIT_FAILURE);
526 }
527
528 init_ssl();
529
530 if (!server_state.foreground)
531 {
532 make_daemon();
533 close_standard_fds(); /* this needs to be before init_netio()! */
534 }
535 else
536 print_startup(getpid());
537
538 setup_signals();
539
540 /* Init the event subsystem */
541 eventInit();
542 /* We need this to initialise the fd array before anything else */
543 fdlist_init();
544 log_add_file(LOG_TYPE_IRCD, 0, logFileName);
545 check_can_use_v6();
546 init_comm(); /* This needs to be setup early ! -- adrian */
547 /* Check if there is pidfile and daemon already running */
548 check_pidfile(pidFileName);
549
550 initBlockHeap();
551 init_dlink_nodes();
552 init_callbacks();
553 initialize_message_files();
554 dbuf_init();
555 init_hash();
556 init_ip_hash_table(); /* client host ip hash table */
557 init_host_hash(); /* Host-hashtable. */
558 init_client();
559 init_class();
560 whowas_init();
561 watch_init();
562 init_auth(); /* Initialise the auth code */
563 init_resolver(); /* Needs to be setup before the io loop */
564 modules_init();
565 read_conf_files(1); /* cold start init conf files */
566 init_uid();
567 initialize_server_capabs(); /* Set up default_server_capabs */
568 initialize_global_set_options();
569 init_channels();
570
571 if (EmptyString(ServerInfo.sid))
572 {
573 ilog(LOG_TYPE_IRCD, "ERROR: No server id specified in serverinfo block.");
574 exit(EXIT_FAILURE);
575 }
576
577 strlcpy(me.id, ServerInfo.sid, sizeof(me.id));
578
579 if (EmptyString(ServerInfo.name))
580 {
581 ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
582 exit(EXIT_FAILURE);
583 }
584
585 strlcpy(me.name, ServerInfo.name, sizeof(me.name));
586
587 /* serverinfo{} description must exist. If not, error out.*/
588 if (EmptyString(ServerInfo.description))
589 {
590 ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
591 exit(EXIT_FAILURE);
592 }
593
594 strlcpy(me.info, ServerInfo.description, sizeof(me.info));
595
596 me.from = &me;
597 me.servptr = &me;
598 me.localClient->lasttime = CurrentTime;
599 me.localClient->since = CurrentTime;
600 me.localClient->firsttime = CurrentTime;
601
602 SetMe(&me);
603 make_server(&me);
604
605 hash_add_id(&me);
606 hash_add_client(&me);
607
608 /* add ourselves to global_serv_list */
609 dlinkAdd(&me, make_dlink_node(), &global_serv_list);
610
611 if (chdir(MODPATH))
612 {
613 ilog(LOG_TYPE_IRCD, "Could not load core modules. Terminating!");
614 exit(EXIT_FAILURE);
615 }
616
617 load_all_modules(1);
618 load_conf_modules();
619 load_core_modules(1);
620
621 /* Go back to DPATH after checking to see if we can chdir to MODPATH */
622 if (chdir(ConfigFileEntry.dpath))
623 {
624 perror("chdir");
625 exit(EXIT_FAILURE);
626 }
627
628 /*
629 * assemble_umode_buffer() has to be called after
630 * reading conf/loading modules.
631 */
632 assemble_umode_buffer();
633
634 write_pidfile(pidFileName);
635
636 ilog(LOG_TYPE_IRCD, "Server Ready");
637
638 eventAddIsh("cleanup_glines", cleanup_glines, NULL, CLEANUP_GLINES_TIME);
639 eventAddIsh("cleanup_tklines", cleanup_tklines, NULL, CLEANUP_TKLINES_TIME);
640
641 /* We want try_connections to be called as soon as possible now! -- adrian */
642 /* No, 'cause after a restart it would cause all sorts of nick collides */
643 eventAddIsh("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);
644
645 /* Setup the timeout check. I'll shift it later :) -- adrian */
646 eventAddIsh("comm_checktimeouts", comm_checktimeouts, NULL, 1);
647
648 if (ConfigServerHide.links_delay > 0)
649 eventAddIsh("write_links_file", write_links_file, NULL, ConfigServerHide.links_delay);
650 else
651 ConfigServerHide.links_disabled = 1;
652
653 if (splitmode)
654 eventAddIsh("check_splitmode", check_splitmode, NULL, 60);
655
656 io_loop();
657 return 0;
658 }

Properties

Name Value
svn:eol-style native
svn:keywords Id Revision

svnadmin@ircd-hybrid.org
ViewVC Help
Powered by ViewVC 1.1.26