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1 | /* | |
2 | * Solanum: a slightly advanced ircd | |
3 | * ircd.c: Starts up and runs the ircd. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2008 ircd-ratbox development team | |
8 | * Copyright (C) 2005-2013 charybdis development team | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
23 | * USA | |
24 | */ | |
25 | ||
26 | #include "rb_lib.h" | |
27 | #include "stdinc.h" | |
28 | #include "setup.h" | |
29 | #include "defaults.h" | |
30 | #include "ircd.h" | |
31 | #include "channel.h" | |
32 | #include "class.h" | |
33 | #include "client.h" | |
34 | #include "hash.h" | |
35 | #include "match.h" | |
36 | #include "ircd_signal.h" | |
37 | #include "msg.h" /* msgtab */ | |
38 | #include "hostmask.h" | |
39 | #include "numeric.h" | |
40 | #include "parse.h" | |
41 | #include "restart.h" | |
42 | #include "s_conf.h" | |
43 | #include "logger.h" | |
44 | #include "s_serv.h" /* try_connections */ | |
45 | #include "s_user.h" | |
46 | #include "s_stats.h" | |
47 | #include "scache.h" | |
48 | #include "send.h" | |
49 | #include "supported.h" | |
50 | #include "whowas.h" | |
51 | #include "modules.h" | |
52 | #include "hook.h" | |
53 | #include "ircd_getopt.h" | |
54 | #include "newconf.h" | |
55 | #include "reject.h" | |
56 | #include "s_newconf.h" | |
57 | #include "cache.h" | |
58 | #include "monitor.h" | |
59 | #include "patchlevel.h" | |
60 | #include "serno.h" | |
61 | #include "sslproc.h" | |
62 | #include "wsproc.h" | |
63 | #include "chmode.h" | |
64 | #include "privilege.h" | |
65 | #include "bandbi.h" | |
66 | #include "authproc.h" | |
67 | #include "operhash.h" | |
68 | ||
69 | static void | |
70 | ircd_die_cb(const char *str) __attribute__((noreturn)); | |
71 | ||
72 | /* /quote set variables */ | |
73 | struct SetOptions GlobalSetOptions; | |
74 | ||
75 | /* configuration set from ircd.conf */ | |
76 | struct config_file_entry ConfigFileEntry; | |
77 | /* server info set from ircd.conf */ | |
78 | struct server_info ServerInfo; | |
79 | /* admin info set from ircd.conf */ | |
80 | struct admin_info AdminInfo; | |
81 | ||
82 | struct Counter Count; | |
83 | struct ServerStatistics ServerStats; | |
84 | ||
85 | int maxconnections; | |
86 | struct Client me; /* That's me */ | |
87 | struct LocalUser meLocalUser; /* That's also part of me */ | |
88 | ||
89 | rb_dlink_list global_client_list; | |
90 | ||
91 | /* unknown/client pointer lists */ | |
92 | rb_dlink_list unknown_list; /* unknown clients ON this server only */ | |
93 | rb_dlink_list lclient_list; /* local clients only ON this server */ | |
94 | rb_dlink_list serv_list; /* local servers to this server ONLY */ | |
95 | rb_dlink_list global_serv_list; /* global servers on the network */ | |
96 | rb_dlink_list local_oper_list; /* our opers, duplicated in lclient_list */ | |
97 | rb_dlink_list oper_list; /* network opers */ | |
98 | ||
99 | char * const *myargv; | |
100 | volatile sig_atomic_t dorehash = false; | |
101 | volatile sig_atomic_t dorehashbans = false; | |
102 | volatile sig_atomic_t doremotd = false; | |
103 | bool kline_queued = false; | |
104 | bool server_state_foreground = false; | |
105 | bool opers_see_all_users = false; | |
106 | bool ircd_ssl_ok = false; | |
107 | bool ircd_zlib_ok = true; | |
108 | ||
109 | int testing_conf = 0; | |
110 | time_t startup_time; | |
111 | ||
112 | int default_server_capabs; | |
113 | ||
114 | int splitmode; | |
115 | int splitchecking; | |
116 | int split_users; | |
117 | int split_servers; | |
118 | int eob_count; | |
119 | ||
120 | const char *ircd_paths[IRCD_PATH_COUNT] = { | |
121 | [IRCD_PATH_PREFIX] = DPATH, | |
122 | [IRCD_PATH_MODULES] = MODPATH, | |
123 | [IRCD_PATH_AUTOLOAD_MODULES] = AUTOMODPATH, | |
124 | [IRCD_PATH_ETC] = ETCPATH, | |
125 | [IRCD_PATH_LOG] = LOGPATH, | |
126 | [IRCD_PATH_USERHELP] = UHPATH, | |
127 | [IRCD_PATH_OPERHELP] = HPATH, | |
128 | [IRCD_PATH_IRCD_EXEC] = SPATH, | |
129 | [IRCD_PATH_IRCD_CONF] = CPATH, | |
130 | [IRCD_PATH_IRCD_MOTD] = MPATH, | |
131 | [IRCD_PATH_IRCD_LOG] = LPATH, | |
132 | [IRCD_PATH_IRCD_PID] = PPATH, | |
133 | [IRCD_PATH_IRCD_OMOTD] = OPATH, | |
134 | [IRCD_PATH_BANDB] = DBPATH, | |
135 | [IRCD_PATH_BIN] = BINPATH, | |
136 | [IRCD_PATH_LIBEXEC] = PKGLIBEXECDIR, | |
137 | }; | |
138 | ||
139 | const char *ircd_pathnames[IRCD_PATH_COUNT] = { | |
140 | [IRCD_PATH_PREFIX] = "prefix", | |
141 | [IRCD_PATH_MODULES] = "modules", | |
142 | [IRCD_PATH_AUTOLOAD_MODULES] = "autoload modules", | |
143 | [IRCD_PATH_ETC] = "config", | |
144 | [IRCD_PATH_LOG] = "log", | |
145 | [IRCD_PATH_USERHELP] = "user help", | |
146 | [IRCD_PATH_OPERHELP] = "oper help", | |
147 | [IRCD_PATH_IRCD_EXEC] = "ircd binary", | |
148 | [IRCD_PATH_IRCD_CONF] = "ircd.conf", | |
149 | [IRCD_PATH_IRCD_MOTD] = "ircd.motd", | |
150 | [IRCD_PATH_IRCD_LOG] = "ircd.log", | |
151 | [IRCD_PATH_IRCD_PID] = "ircd.pid", | |
152 | [IRCD_PATH_IRCD_OMOTD] = "oper motd", | |
153 | [IRCD_PATH_BANDB] = "bandb", | |
154 | [IRCD_PATH_BIN] = "binary dir", | |
155 | [IRCD_PATH_LIBEXEC] = "libexec dir", | |
156 | }; | |
157 | ||
158 | const char *logFileName = NULL; | |
159 | const char *pidFileName = NULL; | |
160 | ||
161 | void | |
162 | ircd_shutdown(const char *reason) | |
163 | { | |
164 | struct Client *target_p; | |
165 | rb_dlink_node *ptr; | |
166 | ||
167 | RB_DLINK_FOREACH(ptr, lclient_list.head) | |
168 | { | |
169 | target_p = ptr->data; | |
170 | ||
171 | sendto_one(target_p, ":%s NOTICE %s :Server Terminating. %s", | |
172 | me.name, target_p->name, reason); | |
173 | } | |
174 | ||
175 | RB_DLINK_FOREACH(ptr, serv_list.head) | |
176 | { | |
177 | target_p = ptr->data; | |
178 | ||
179 | sendto_one(target_p, ":%s ERROR :Terminated by %s", | |
180 | me.name, reason); | |
181 | } | |
182 | ||
183 | ilog(L_MAIN, "Server Terminating. %s", reason); | |
184 | close_logfiles(); | |
185 | ||
186 | unlink(pidFileName); | |
187 | exit(0); | |
188 | } | |
189 | ||
190 | /* | |
191 | * init_sys | |
192 | * | |
193 | * inputs - boot_daemon flag | |
194 | * output - none | |
195 | * side effects - if boot_daemon flag is not set, don't daemonize | |
196 | */ | |
197 | static void | |
198 | init_sys(void) | |
199 | { | |
200 | #if !defined(_WIN32) && defined(RLIMIT_NOFILE) && defined(HAVE_SYS_RESOURCE_H) | |
201 | struct rlimit limit; | |
202 | ||
203 | if(!getrlimit(RLIMIT_NOFILE, &limit)) | |
204 | { | |
205 | maxconnections = limit.rlim_cur; | |
206 | if(maxconnections <= MAX_BUFFER) | |
207 | { | |
208 | fprintf(stderr, "ERROR: Shell FD limits are too low.\n"); | |
209 | fprintf(stderr, "ERROR: solanum reserves %d FDs, shell limits must be above this\n", MAX_BUFFER); | |
210 | exit(EXIT_FAILURE); | |
211 | } | |
212 | return; | |
213 | } | |
214 | #endif /* RLIMIT_FD_MAX */ | |
215 | maxconnections = MAXCONNECTIONS; | |
216 | } | |
217 | ||
218 | #ifndef _WIN32 | |
219 | static int | |
220 | make_daemon(void) | |
221 | { | |
222 | int pid, nullfd, fdx; | |
223 | ||
224 | /* The below is approximately what daemon(1, 0) does, but | |
225 | we need control over the parent after forking to print | |
226 | the startup message -- Aaron */ | |
227 | ||
228 | if((nullfd = open("/dev/null", O_RDWR)) < 0) | |
229 | { | |
230 | perror("open /dev/null"); | |
231 | exit(EXIT_FAILURE); | |
232 | } | |
233 | ||
234 | if((pid = fork()) < 0) | |
235 | { | |
236 | perror("fork"); | |
237 | exit(EXIT_FAILURE); | |
238 | } | |
239 | else if(pid > 0) | |
240 | { | |
241 | inotice("now running in background mode from %s as pid %d ...", | |
242 | ConfigFileEntry.dpath, pid); | |
243 | ||
244 | exit(EXIT_SUCCESS); | |
245 | } | |
246 | ||
247 | for(fdx = 0; fdx <= 2; fdx++) | |
248 | if (fdx != nullfd) | |
249 | (void) dup2(nullfd, fdx); | |
250 | ||
251 | if(nullfd > 2) | |
252 | (void) close(nullfd); | |
253 | ||
254 | (void) setsid(); | |
255 | ||
256 | return 0; | |
257 | } | |
258 | #endif | |
259 | ||
260 | static int printVersion = 0; | |
261 | ||
262 | struct lgetopt myopts[] = { | |
263 | {"configfile", &ConfigFileEntry.configfile, | |
264 | STRING, "File to use for ircd.conf"}, | |
265 | {"logfile", &logFileName, | |
266 | STRING, "File to use for ircd.log"}, | |
267 | {"pidfile", &pidFileName, | |
268 | STRING, "File to use for process ID"}, | |
269 | {"foreground", &server_state_foreground, | |
270 | YESNO, "Run in foreground (don't detach)"}, | |
271 | {"version", &printVersion, | |
272 | YESNO, "Print version and exit"}, | |
273 | {"conftest", &testing_conf, | |
274 | YESNO, "Test the configuration files and exit"}, | |
275 | {"help", NULL, USAGE, "Print this text"}, | |
276 | {NULL, NULL, STRING, NULL}, | |
277 | }; | |
278 | ||
279 | static void | |
280 | check_rehash(void *unused) | |
281 | { | |
282 | /* | |
283 | * Check to see whether we have to rehash the configuration .. | |
284 | */ | |
285 | if(dorehash) | |
286 | { | |
287 | rehash(true); | |
288 | dorehash = false; | |
289 | } | |
290 | ||
291 | if(dorehashbans) | |
292 | { | |
293 | rehash_bans(); | |
294 | dorehashbans = false; | |
295 | } | |
296 | ||
297 | if(doremotd) | |
298 | { | |
299 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, | |
300 | "Got signal SIGUSR1, reloading ircd motd file"); | |
301 | cache_user_motd(); | |
302 | doremotd = false; | |
303 | } | |
304 | } | |
305 | ||
306 | /* | |
307 | * initalialize_global_set_options | |
308 | * | |
309 | * inputs - none | |
310 | * output - none | |
311 | * side effects - This sets all global set options needed | |
312 | */ | |
313 | static void | |
314 | initialize_global_set_options(void) | |
315 | { | |
316 | memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions)); | |
317 | /* memset( &ConfigFileEntry, 0, sizeof(ConfigFileEntry)); */ | |
318 | ||
319 | GlobalSetOptions.maxclients = ServerInfo.default_max_clients; | |
320 | ||
321 | if(GlobalSetOptions.maxclients > (maxconnections - MAX_BUFFER) || (GlobalSetOptions.maxclients <= 0)) | |
322 | GlobalSetOptions.maxclients = maxconnections - MAX_BUFFER; | |
323 | ||
324 | GlobalSetOptions.autoconn = 1; | |
325 | ||
326 | GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME; | |
327 | GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT; | |
328 | ||
329 | GlobalSetOptions.floodcount = ConfigFileEntry.default_floodcount; | |
330 | ||
331 | split_servers = ConfigChannel.default_split_server_count; | |
332 | split_users = ConfigChannel.default_split_user_count; | |
333 | ||
334 | if(split_users && split_servers | |
335 | && (ConfigChannel.no_create_on_split || ConfigChannel.no_join_on_split)) | |
336 | { | |
337 | splitmode = 1; | |
338 | splitchecking = 1; | |
339 | } | |
340 | ||
341 | GlobalSetOptions.ident_timeout = ConfigFileEntry.default_ident_timeout; | |
342 | ||
343 | rb_strlcpy(GlobalSetOptions.operstring, | |
344 | ConfigFileEntry.default_operstring, | |
345 | sizeof(GlobalSetOptions.operstring)); | |
346 | rb_strlcpy(GlobalSetOptions.adminstring, | |
347 | ConfigFileEntry.default_adminstring, | |
348 | sizeof(GlobalSetOptions.adminstring)); | |
349 | ||
350 | /* memset( &ConfigChannel, 0, sizeof(ConfigChannel)); */ | |
351 | ||
352 | /* End of global set options */ | |
353 | ||
354 | } | |
355 | ||
356 | /* | |
357 | * initialize_server_capabs | |
358 | * | |
359 | * inputs - none | |
360 | * output - none | |
361 | */ | |
362 | static void | |
363 | initialize_server_capabs(void) | |
364 | { | |
365 | default_server_capabs &= ~CAP_ZIP; | |
366 | } | |
367 | ||
368 | #ifdef _WIN32 | |
369 | /* | |
370 | * relocate_paths | |
371 | * | |
372 | * inputs - none | |
373 | * output - none | |
374 | * side effects - items in ircd_paths[] array are relocated | |
375 | */ | |
376 | static void | |
377 | relocate_paths(void) | |
378 | { | |
379 | char prefix[PATH_MAX], workbuf[PATH_MAX]; | |
380 | char *p; | |
381 | ||
382 | rb_strlcpy(prefix, rb_path_to_self(), sizeof prefix); | |
383 | ||
384 | ircd_paths[IRCD_PATH_IRCD_EXEC] = rb_strdup(prefix); | |
385 | ||
386 | /* if we're running from inside the source tree, we probably do not want to relocate any other paths */ | |
387 | if (strstr(prefix, ".libs") != NULL) | |
388 | return; | |
389 | ||
390 | /* prefix = /home/kaniini/ircd/bin/ircd */ | |
391 | p = strrchr(prefix, RB_PATH_SEPARATOR); | |
392 | if (rb_unlikely(p == NULL)) | |
393 | return; | |
394 | *p = 0; | |
395 | ||
396 | /* prefix = /home/kaniini/ircd/bin */ | |
397 | p = strrchr(prefix, RB_PATH_SEPARATOR); | |
398 | if (rb_unlikely(p == NULL)) | |
399 | return; | |
400 | *p = 0; | |
401 | ||
402 | /* prefix = /home/kaniini/ircd */ | |
403 | ircd_paths[IRCD_PATH_PREFIX] = rb_strdup(prefix); | |
404 | ||
405 | /* now that we have our prefix, we can relocate the other paths... */ | |
406 | snprintf(workbuf, sizeof workbuf, "%s%cmodules", prefix, RB_PATH_SEPARATOR); | |
407 | ircd_paths[IRCD_PATH_MODULES] = rb_strdup(workbuf); | |
408 | ||
409 | snprintf(workbuf, sizeof workbuf, "%s%cmodules%cautoload", prefix, RB_PATH_SEPARATOR, RB_PATH_SEPARATOR); | |
410 | ircd_paths[IRCD_PATH_AUTOLOAD_MODULES] = rb_strdup(workbuf); | |
411 | ||
412 | snprintf(workbuf, sizeof workbuf, "%s%cetc", prefix, RB_PATH_SEPARATOR); | |
413 | ircd_paths[IRCD_PATH_ETC] = rb_strdup(workbuf); | |
414 | ||
415 | snprintf(workbuf, sizeof workbuf, "%s%clog", prefix, RB_PATH_SEPARATOR); | |
416 | ircd_paths[IRCD_PATH_LOG] = rb_strdup(workbuf); | |
417 | ||
418 | snprintf(workbuf, sizeof workbuf, "%s%chelp%cusers", prefix, RB_PATH_SEPARATOR, RB_PATH_SEPARATOR); | |
419 | ircd_paths[IRCD_PATH_USERHELP] = rb_strdup(workbuf); | |
420 | ||
421 | snprintf(workbuf, sizeof workbuf, "%s%chelp%copers", prefix, RB_PATH_SEPARATOR, RB_PATH_SEPARATOR); | |
422 | ircd_paths[IRCD_PATH_OPERHELP] = rb_strdup(workbuf); | |
423 | ||
424 | snprintf(workbuf, sizeof workbuf, "%s%cetc%circd.conf", prefix, RB_PATH_SEPARATOR, RB_PATH_SEPARATOR); | |
425 | ircd_paths[IRCD_PATH_IRCD_CONF] = rb_strdup(workbuf); | |
426 | ||
427 | snprintf(workbuf, sizeof workbuf, "%s%cetc%circd.motd", prefix, RB_PATH_SEPARATOR, RB_PATH_SEPARATOR); | |
428 | ircd_paths[IRCD_PATH_IRCD_MOTD] = rb_strdup(workbuf); | |
429 | ||
430 | snprintf(workbuf, sizeof workbuf, "%s%cetc%copers.motd", prefix, RB_PATH_SEPARATOR, RB_PATH_SEPARATOR); | |
431 | ircd_paths[IRCD_PATH_IRCD_OMOTD] = rb_strdup(workbuf); | |
432 | ||
433 | snprintf(workbuf, sizeof workbuf, "%s%cetc%cban.db", prefix, RB_PATH_SEPARATOR, RB_PATH_SEPARATOR); | |
434 | ircd_paths[IRCD_PATH_BANDB] = rb_strdup(workbuf); | |
435 | ||
436 | snprintf(workbuf, sizeof workbuf, "%s%cetc%circd.pid", prefix, RB_PATH_SEPARATOR, RB_PATH_SEPARATOR); | |
437 | ircd_paths[IRCD_PATH_IRCD_PID] = rb_strdup(workbuf); | |
438 | ||
439 | snprintf(workbuf, sizeof workbuf, "%s%clogs%circd.log", prefix, RB_PATH_SEPARATOR, RB_PATH_SEPARATOR); | |
440 | ircd_paths[IRCD_PATH_IRCD_LOG] = rb_strdup(workbuf); | |
441 | ||
442 | snprintf(workbuf, sizeof workbuf, "%s%cbin", prefix, RB_PATH_SEPARATOR); | |
443 | ircd_paths[IRCD_PATH_BIN] = rb_strdup(workbuf); | |
444 | ircd_paths[IRCD_PATH_LIBEXEC] = rb_strdup(workbuf); | |
445 | ||
446 | inotice("runtime paths:"); | |
447 | for (int i = 0; i < IRCD_PATH_COUNT; i++) | |
448 | { | |
449 | inotice(" %s: %s", ircd_pathnames[i], ircd_paths[i]); | |
450 | } | |
451 | } | |
452 | #endif | |
453 | ||
454 | /* | |
455 | * write_pidfile | |
456 | * | |
457 | * inputs - filename+path of pid file | |
458 | * output - none | |
459 | * side effects - write the pid of the ircd to filename | |
460 | */ | |
461 | static void | |
462 | write_pidfile(const char *filename) | |
463 | { | |
464 | FILE *fb; | |
465 | char buff[32]; | |
466 | if((fb = fopen(filename, "w"))) | |
467 | { | |
468 | unsigned int pid = (unsigned int) getpid(); | |
469 | ||
470 | snprintf(buff, sizeof(buff), "%u\n", pid); | |
471 | if((fputs(buff, fb) == -1)) | |
472 | { | |
473 | ilog(L_MAIN, "Error writing %u to pid file %s (%s)", | |
474 | pid, filename, strerror(errno)); | |
475 | } | |
476 | fclose(fb); | |
477 | return; | |
478 | } | |
479 | else | |
480 | { | |
481 | ilog(L_MAIN, "Error opening pid file %s", filename); | |
482 | } | |
483 | } | |
484 | ||
485 | /* | |
486 | * check_pidfile | |
487 | * | |
488 | * inputs - filename+path of pid file | |
489 | * output - none | |
490 | * side effects - reads pid from pidfile and checks if ircd is in process | |
491 | * list. if it is, gracefully exits | |
492 | * -kre | |
493 | */ | |
494 | static void | |
495 | check_pidfile(const char *filename) | |
496 | { | |
497 | FILE *fb; | |
498 | char buff[32]; | |
499 | pid_t pidfromfile; | |
500 | ||
501 | /* Don't do logging here, since we don't have log() initialised */ | |
502 | if((fb = fopen(filename, "r"))) | |
503 | { | |
504 | if(fgets(buff, 20, fb) != NULL) | |
505 | { | |
506 | pidfromfile = atoi(buff); | |
507 | if(!rb_kill(pidfromfile, 0)) | |
508 | { | |
509 | printf("ircd: daemon is already running\n"); | |
510 | exit(-1); | |
511 | } | |
512 | } | |
513 | fclose(fb); | |
514 | } | |
515 | } | |
516 | ||
517 | /* | |
518 | * setup_corefile | |
519 | * | |
520 | * inputs - nothing | |
521 | * output - nothing | |
522 | * side effects - setups corefile to system limits. | |
523 | * -kre | |
524 | */ | |
525 | static void | |
526 | setup_corefile(void) | |
527 | { | |
528 | #ifdef HAVE_SYS_RESOURCE_H | |
529 | struct rlimit rlim; /* resource limits */ | |
530 | ||
531 | /* Set corefilesize to maximum */ | |
532 | if(!getrlimit(RLIMIT_CORE, &rlim)) | |
533 | { | |
534 | rlim.rlim_cur = rlim.rlim_max; | |
535 | setrlimit(RLIMIT_CORE, &rlim); | |
536 | } | |
537 | #endif | |
538 | } | |
539 | ||
540 | static void | |
541 | ircd_log_cb(const char *str) | |
542 | { | |
543 | ilog(L_MAIN, "librb reports: %s", str); | |
544 | } | |
545 | ||
546 | static void | |
547 | ircd_restart_cb(const char *str) | |
548 | { | |
549 | inotice("librb has called the restart callback: %s", str); | |
550 | restart(str); | |
551 | } | |
552 | ||
553 | /* | |
554 | * Why EXIT_FAILURE here? | |
555 | * Because if ircd_die_cb() is called it's because of a fatal | |
556 | * error inside libsolanum, and we don't know how to handle the | |
557 | * exception, so it is logical to return a FAILURE exit code here. | |
558 | * --nenolod | |
559 | */ | |
560 | static void | |
561 | ircd_die_cb(const char *str) | |
562 | { | |
563 | if(str != NULL) | |
564 | { | |
565 | /* Try to get the message out to currently logged in operators. */ | |
566 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "librb has called the die callback..aborting: %s", str); | |
567 | inotice("librb has called the die callback..aborting: %s", str); | |
568 | } | |
569 | else | |
570 | inotice("librb has called the die callback..aborting"); | |
571 | ||
572 | unlink(pidFileName); | |
573 | exit(EXIT_FAILURE); | |
574 | } | |
575 | ||
576 | struct ev_entry *check_splitmode_ev = NULL; | |
577 | ||
578 | static int | |
579 | seed_with_urandom(void) | |
580 | { | |
581 | unsigned int seed; | |
582 | int fd; | |
583 | ||
584 | fd = open("/dev/urandom", O_RDONLY); | |
585 | if(fd >= 0) | |
586 | { | |
587 | if(read(fd, &seed, sizeof(seed)) == sizeof(seed)) | |
588 | { | |
589 | close(fd); | |
590 | srand(seed); | |
591 | return 1; | |
592 | } | |
593 | close(fd); | |
594 | } | |
595 | return 0; | |
596 | } | |
597 | ||
598 | static void | |
599 | seed_with_clock(void) | |
600 | { | |
601 | const struct timeval *tv; | |
602 | rb_set_time(); | |
603 | tv = rb_current_time_tv(); | |
604 | srand(tv->tv_sec ^ (tv->tv_usec | (getpid() << 20))); | |
605 | } | |
606 | ||
607 | static void | |
608 | seed_random(void *unused) | |
609 | { | |
610 | unsigned int seed; | |
611 | if(rb_get_random(&seed, sizeof(seed)) == -1) | |
612 | { | |
613 | if(!seed_with_urandom()) | |
614 | seed_with_clock(); | |
615 | return; | |
616 | } | |
617 | srand(seed); | |
618 | } | |
619 | ||
620 | /* | |
621 | * main | |
622 | * | |
623 | * Initializes the IRCd. | |
624 | * | |
625 | * Inputs - number of commandline args, args themselves | |
626 | * Outputs - none | |
627 | * Side Effects - this is where the ircd gets going right now | |
628 | */ | |
629 | int | |
630 | solanum_main(int argc, char * const argv[]) | |
631 | { | |
632 | int fd; | |
633 | ||
634 | #ifndef _WIN32 | |
635 | /* Check to see if the user is running us as root, which is a nono */ | |
636 | if(geteuid() == 0) | |
637 | { | |
638 | fprintf(stderr, "Don't run ircd as root!!!\n"); | |
639 | return -1; | |
640 | } | |
641 | #endif | |
642 | ||
643 | #ifdef _WIN32 | |
644 | relocate_paths(); | |
645 | #endif | |
646 | ||
647 | logFileName = ircd_paths[IRCD_PATH_IRCD_LOG]; | |
648 | pidFileName = ircd_paths[IRCD_PATH_IRCD_PID]; | |
649 | ||
650 | ConfigFileEntry.dpath = ircd_paths[IRCD_PATH_PREFIX]; | |
651 | ConfigFileEntry.configfile = ircd_paths[IRCD_PATH_IRCD_CONF]; /* Server configuration file */ | |
652 | ConfigFileEntry.connect_timeout = 30; /* Default to 30 */ | |
653 | ||
654 | init_sys(); | |
655 | ||
656 | umask(077); /* better safe than sorry --SRB */ | |
657 | ||
658 | myargv = argv; | |
659 | parseargs(&argc, &argv, myopts); | |
660 | ||
661 | if(chdir(ConfigFileEntry.dpath)) | |
662 | { | |
663 | fprintf(stderr, "Unable to chdir to %s: %s\n", ConfigFileEntry.dpath, strerror(errno)); | |
664 | exit(EXIT_FAILURE); | |
665 | } | |
666 | ||
667 | rb_set_time(); | |
668 | ||
669 | /* | |
670 | * Setup corefile size immediately after boot -kre | |
671 | */ | |
672 | setup_corefile(); | |
673 | ||
674 | /* initialise operhash fairly early. */ | |
675 | init_operhash(); | |
676 | ||
677 | memset(&me, 0, sizeof(me)); | |
678 | memset(&meLocalUser, 0, sizeof(meLocalUser)); | |
679 | me.localClient = &meLocalUser; | |
680 | ||
681 | /* Make sure all lists are zeroed */ | |
682 | memset(&global_client_list, 0, sizeof(global_client_list)); | |
683 | memset(&unknown_list, 0, sizeof(unknown_list)); | |
684 | memset(&lclient_list, 0, sizeof(lclient_list)); | |
685 | memset(&serv_list, 0, sizeof(serv_list)); | |
686 | memset(&global_serv_list, 0, sizeof(global_serv_list)); | |
687 | memset(&local_oper_list, 0, sizeof(local_oper_list)); | |
688 | memset(&oper_list, 0, sizeof(oper_list)); | |
689 | ||
690 | rb_dlinkAddTail(&me, &me.node, &global_client_list); | |
691 | ||
692 | memset(&Count, 0, sizeof(Count)); | |
693 | memset(&ServerInfo, 0, sizeof(ServerInfo)); | |
694 | memset(&AdminInfo, 0, sizeof(AdminInfo)); | |
695 | memset(&ServerStats, 0, sizeof(struct ServerStatistics)); | |
696 | ||
697 | if(printVersion) | |
698 | { | |
699 | printf("ircd: version %s(%s)\n", ircd_version, serno); | |
700 | #ifdef CUSTOM_BRANDING | |
701 | printf("ircd: based on %s-%s\n", PACKAGE_NAME, PACKAGE_VERSION); | |
702 | #endif | |
703 | printf("ircd: %s\n", rb_lib_version()); | |
704 | exit(EXIT_SUCCESS); | |
705 | } | |
706 | ||
707 | setup_signals(); | |
708 | ||
709 | if (testing_conf) | |
710 | server_state_foreground = true; | |
711 | ||
712 | #ifndef _WIN32 | |
713 | /* Make sure fd 0, 1 and 2 are in use -- jilles */ | |
714 | do | |
715 | { | |
716 | fd = open("/dev/null", O_RDWR); | |
717 | } while (fd < 2 && fd != -1); | |
718 | if (fd > 2) | |
719 | close(fd); | |
720 | else if (fd == -1) | |
721 | exit(1); | |
722 | #endif | |
723 | ||
724 | /* Check if there is pidfile and daemon already running */ | |
725 | if(!testing_conf) | |
726 | { | |
727 | check_pidfile(pidFileName); | |
728 | ||
729 | inotice("starting %s ...", ircd_version); | |
730 | inotice("%s", rb_lib_version()); | |
731 | ||
732 | #ifndef _WIN32 | |
733 | if(!server_state_foreground) | |
734 | make_daemon(); | |
735 | #endif | |
736 | } | |
737 | ||
738 | /* Init the event subsystem */ | |
739 | rb_lib_init(ircd_log_cb, ircd_restart_cb, ircd_die_cb, !server_state_foreground, maxconnections, DNODE_HEAP_SIZE, FD_HEAP_SIZE); | |
740 | rb_linebuf_init(LINEBUF_HEAP_SIZE); | |
741 | ||
742 | rb_init_prng(NULL, RB_PRNG_DEFAULT); | |
743 | ||
744 | seed_random(NULL); | |
745 | ||
746 | init_builtin_capabs(); | |
747 | default_server_capabs = CAP_MASK; | |
748 | ||
749 | init_main_logfile(); | |
750 | newconf_init(); | |
751 | init_s_conf(); | |
752 | init_s_newconf(); | |
753 | init_hash(); | |
754 | clear_scache_hash_table(); /* server cache name table */ | |
755 | init_host_hash(); | |
756 | clear_hash_parse(); | |
757 | init_client(); | |
758 | init_hook(); | |
759 | init_channels(); | |
760 | initclass(); | |
761 | whowas_init(); | |
762 | init_reject(); | |
763 | init_cache(); | |
764 | init_monitor(); | |
765 | ||
766 | construct_cflags_strings(); | |
767 | ||
768 | init_authd(); /* Start up authd. */ | |
769 | init_dns(); /* Start up DNS query system */ | |
770 | init_modules(); /* Start up modules system */ | |
771 | ||
772 | privilegeset_set_new("default", "", 0); | |
773 | ||
774 | if (testing_conf) | |
775 | fprintf(stderr, "\nBeginning config test\n"); | |
776 | read_conf_files(true); /* cold start init conf files */ | |
777 | ||
778 | load_all_modules(1); | |
779 | load_core_modules(1); | |
780 | ||
781 | init_isupport(); | |
782 | ||
783 | init_bandb(); | |
784 | init_ssld(); | |
785 | init_wsockd(); | |
786 | ||
787 | rehash_bans(); | |
788 | ||
789 | initialize_server_capabs(); /* Set up default_server_capabs */ | |
790 | initialize_global_set_options(); | |
791 | ||
792 | if(ServerInfo.name == NULL) | |
793 | { | |
794 | ierror("no server name specified in serverinfo block."); | |
795 | return -1; | |
796 | } | |
797 | rb_strlcpy(me.name, ServerInfo.name, sizeof(me.name)); | |
798 | ||
799 | if(ServerInfo.sid[0] == '\0') | |
800 | { | |
801 | ierror("no server sid specified in serverinfo block."); | |
802 | return -2; | |
803 | } | |
804 | rb_strlcpy(me.id, ServerInfo.sid, sizeof(me.id)); | |
805 | init_uid(); | |
806 | ||
807 | /* serverinfo{} description must exist. If not, error out. */ | |
808 | if(ServerInfo.description == NULL) | |
809 | { | |
810 | ierror("no server description specified in serverinfo block."); | |
811 | return -3; | |
812 | } | |
813 | rb_strlcpy(me.info, ServerInfo.description, sizeof(me.info)); | |
814 | ||
815 | if(ServerInfo.ssl_cert != NULL) | |
816 | { | |
817 | /* just do the rb_setup_ssl_server to validate the config */ | |
818 | if(!rb_setup_ssl_server(ServerInfo.ssl_cert, ServerInfo.ssl_private_key, ServerInfo.ssl_dh_params, ServerInfo.ssl_cipher_list)) | |
819 | { | |
820 | ilog(L_MAIN, "WARNING: Unable to setup SSL."); | |
821 | ircd_ssl_ok = false; | |
822 | } | |
823 | else | |
824 | ircd_ssl_ok = true; | |
825 | } | |
826 | ||
827 | me.from = &me; | |
828 | me.servptr = &me; | |
829 | SetMe(&me); | |
830 | make_server(&me); | |
831 | startup_time = rb_current_time(); | |
832 | add_to_client_hash(me.name, &me); | |
833 | add_to_id_hash(me.id, &me); | |
834 | me.serv->nameinfo = scache_connect(me.name, me.info, 0); | |
835 | ||
836 | rb_dlinkAddAlloc(&me, &global_serv_list); | |
837 | ||
838 | construct_umodebuf(); | |
839 | ||
840 | if (testing_conf) | |
841 | { | |
842 | fprintf(stderr, "\nConfig testing complete.\n"); | |
843 | fflush(stderr); | |
844 | return 0; /* Why? We want the launcher to exit out. */ | |
845 | } | |
846 | ||
847 | check_class(); | |
848 | write_pidfile(pidFileName); | |
849 | load_help(); | |
850 | open_logfiles(); | |
851 | ||
852 | configure_authd(); | |
853 | ||
854 | ilog(L_MAIN, "Server Ready"); | |
855 | ||
856 | /* We want try_connections to be called as soon as possible now! -- adrian */ | |
857 | /* No, 'cause after a restart it would cause all sorts of nick collides */ | |
858 | /* um. by waiting even longer, that just means we have even *more* | |
859 | * nick collisions. what a stupid idea. set an event for the IO loop --fl | |
860 | */ | |
861 | rb_event_addish("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME); | |
862 | rb_event_addonce("try_connections_startup", try_connections, NULL, 2); | |
863 | rb_event_add("check_rehash", check_rehash, NULL, 3); | |
864 | rb_event_addish("reseed_srand", seed_random, NULL, 300); /* reseed every 10 minutes */ | |
865 | ||
866 | if(splitmode) | |
867 | check_splitmode_ev = rb_event_add("check_splitmode", check_splitmode, NULL, 5); | |
868 | ||
869 | if(server_state_foreground) | |
870 | inotice("now running in foreground mode from %s as pid %d ...", | |
871 | ConfigFileEntry.dpath, getpid()); | |
872 | ||
873 | rb_lib_loop(0); | |
874 | ||
875 | return 0; | |
876 | } |