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root/svn/ircd-hybrid/src/ircd.c
Revision: 747
Committed: Mon Jul 24 22:14:17 2006 UTC (17 years, 8 months ago) by adx
Content type: text/x-csrc
File size: 14303 byte(s)
Log Message:
+ fixed everything except m_gline and m_spoof.
+ still to do: ban storage, limits, iphash, parser, conf_connect_allowed

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 #ifdef IN_IRCD
26 #include "stdinc.h"
27 #include "conf/conf.h"
28 #include "s_user.h"
29 #include "ircd.h"
30 #include "channel.h"
31 #include "channel_mode.h"
32 #include "client.h"
33 #include "common.h"
34 #include "hash.h"
35 #include "ircd_signal.h"
36 #include "motd.h"
37 #include "ircd_handler.h"
38 #include "msg.h" /* msgtab */
39 #include "numeric.h"
40 #include "packet.h"
41 #include "parse.h"
42 #include "restart.h"
43 #include "s_auth.h"
44 #include "parse_aline.h"
45 #include "s_serv.h"
46 #include "send.h"
47 #include "whowas.h"
48 #include "motd.h"
49 #include "watch.h"
50 #include "patchlevel.h"
51 #include "serno.h"
52
53
54 /* /quote set variables */
55 struct SetOptions GlobalSetOptions;
56 struct ServerStatistics ServerStats;
57 /* admin info set from ircd.conf */
58 struct Counter Count = { 0, 0, 0, 0, 0, 0, 0, 0 };
59 struct ServerState_t ServerState = { 0 };
60 struct Client me; /* That's me */
61 struct LocalUser meLocalUser; /* That's also part of me */
62
63 char **myargv;
64 const char *ircd_version = PATCHLEVEL;
65 const char *serno = SERIALNUM;
66 char ircd_platform[IRCD_BUFSIZE];
67
68 int dorehash = 0;
69 int doremotd = 0;
70
71 /* Set to zero because it should be initialized later using
72 * initialize_server_capabs
73 */
74 int default_server_capabs = 0;
75
76 #ifdef HAVE_LIBCRYPTO
77 int bio_spare_fd = -1;
78 #endif
79
80 int splitmode;
81 int splitchecking;
82
83 static dlink_node *fdlimit_hook;
84
85 /* Do klines the same way hybrid-6 did them, i.e. at the
86 * top of the next io_loop instead of in the same loop as
87 * the klines are being applied.
88 *
89 * This should fix strange CPU starvation as very indirectly reported.
90 * (Why do you people not email bug reports? WHY? WHY?)
91 *
92 * - Dianora
93 */
94
95 int rehashed_klines = 0;
96
97 #ifndef _WIN32
98 /*
99 * print_startup - print startup information
100 */
101 static void
102 print_startup(int pid)
103 {
104 printf("ircd: version %s\n", ircd_version);
105 printf("ircd: pid %d\n", pid);
106 printf("ircd: running in %s mode from %s\n",
107 ServerState.foreground ? "foreground" : "background", DPATH);
108 }
109
110 static void
111 make_daemon(void)
112 {
113 int pid;
114
115 if ((pid = fork()) < 0)
116 {
117 perror("fork");
118 exit(EXIT_FAILURE);
119 }
120 else if (pid > 0)
121 {
122 print_startup(pid);
123 exit(EXIT_SUCCESS);
124 }
125
126 setsid();
127 }
128 #endif
129
130 static struct lgetopt myopts[] = {
131 {"configfile", &ServerState.configfile,
132 STRING, "File to use for ircd.conf"},
133 {"klinefile", &ServerState.klinefile,
134 STRING, "File to use for kline.conf"},
135 {"rklinefile", &ServerState.rklinefile,
136 STRING, "File to use for rkline.conf"},
137 {"dlinefile", &ServerState.dlinefile,
138 STRING, "File to use for dline.conf"},
139 {"glinefile", &ServerState.glinefile,
140 STRING, "File to use for gline.conf"},
141 {"xlinefile", &ServerState.xlinefile,
142 STRING, "File to use for xline.conf"},
143 {"rxlinefile", &ServerState.rxlinefile,
144 STRING, "File to use for rxline.conf"},
145 {"cresvfile", &ServerState.cresvfile,
146 STRING, "File to use for cresv.conf"},
147 {"nresvfile", &ServerState.nresvfile,
148 STRING, "File to use for nresv.conf"},
149 {"logfile", &ServerState.logfile,
150 STRING, "File to use for ircd.log"},
151 {"pidfile", &ServerState.pidfile,
152 STRING, "File to use for process ID"},
153 {"foreground", &ServerState.foreground,
154 YESNO, "Run in foreground (don't detach)"},
155 {"version", &ServerState.printversion,
156 YESNO, "Print version and exit"},
157 {"help", NULL, USAGE, "Print this text"},
158 {NULL, NULL, STRING, NULL},
159 };
160
161 static void
162 io_loop(void)
163 {
164 while (1 == 1)
165 {
166 /*
167 * Maybe we want a flags word?
168 * ie. if (REHASHED_KLINES(global_flags))
169 * SET_REHASHED_KLINES(global_flags)
170 * CLEAR_REHASHED_KLINES(global_flags)
171 *
172 * - Dianora
173 */
174 if (rehashed_klines)
175 {
176 check_conf_klines();
177 rehashed_klines = 0;
178 }
179
180 if (listing_client_list.head)
181 {
182 dlink_node *ptr = NULL, *ptr_next = NULL;
183 DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
184 {
185 struct Client *client_p = ptr->data;
186 assert(client_p->localClient->list_task);
187 safe_list_channels(client_p, client_p->localClient->list_task, 0);
188 }
189 }
190
191 /* Run pending events, then get the number of seconds to the next
192 * event
193 */
194 while (eventNextTime() <= CurrentTime)
195 eventRun();
196
197 comm_select();
198 exit_aborted_clients();
199 free_exited_clients();
200 send_queued_all();
201
202 // Check to see whether we have to rehash the configuration ..
203 if (dorehash)
204 {
205 sendto_realops_flags(UMODE_ALL, L_ALL,
206 "Got signal SIGHUP, reloading ircd configuration");
207 read_conf_files(NO);
208 dorehash = 0;
209 }
210
211 if (doremotd)
212 {
213 read_message_file(&motd);
214 sendto_realops_flags(UMODE_ALL, L_ALL,
215 "Got signal SIGUSR1, reloading ircd MOTD file");
216 doremotd = 0;
217 }
218 }
219 }
220
221 /* initalialize_global_set_options()
222 *
223 * inputs - none
224 * output - none
225 * side effects - This sets all global set options needed
226 * XXX to be removed with old s_conf.c
227 */
228 static void
229 initialize_global_set_options(void)
230 {
231 memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));
232
233 GlobalSetOptions.autoconn = 1;
234 GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
235 GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
236
237 if (General.default_floodcount)
238 GlobalSetOptions.floodcount = General.default_floodcount;
239 else
240 GlobalSetOptions.floodcount = 10;
241
242 // XXX I have no idea what to try here - Dianora
243 GlobalSetOptions.joinfloodcount = 16;
244 GlobalSetOptions.joinfloodtime = 8;
245
246 GlobalSetOptions.split_servers = Channel.default_split_server_count;
247 GlobalSetOptions.split_users = Channel.default_split_user_count;
248
249 if (GlobalSetOptions.split_users && GlobalSetOptions.split_servers &&
250 (Channel.no_create_on_split || Channel.no_join_on_split))
251 {
252 splitmode = 1;
253 splitchecking = 1;
254 }
255
256 GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
257 GlobalSetOptions.idletime = General.idletime;
258 GlobalSetOptions.maxlisters = 10; /* XXX ya ya ya - db */
259 }
260
261 /* write_pidfile()
262 *
263 * inputs - filename+path of pid file
264 * output - NONE
265 * side effects - write the pid of the ircd to filename
266 */
267 static void
268 write_pidfile(const char *filename)
269 {
270 FBFILE *fb;
271
272 if ((fb = fbopen(filename, "w")))
273 {
274 char buff[32];
275 unsigned int pid = (unsigned int)getpid();
276 size_t nbytes = ircsprintf(buff, "%u\n", pid);
277
278 if ((fbputs(buff, fb, nbytes) == -1))
279 ilog(L_ERROR, "Error writing %u to pid file %s (%s)",
280 pid, filename, strerror(errno));
281
282 fbclose(fb);
283 }
284 else
285 {
286 ilog(L_ERROR, "Error opening pid file %s", filename);
287 }
288 }
289
290 /* check_pidfile()
291 *
292 * inputs - filename+path of pid file
293 * output - none
294 * side effects - reads pid from pidfile and checks if ircd is in process
295 * list. if it is, gracefully exits
296 * -kre
297 */
298 static void
299 check_pidfile(const char *filename)
300 {
301 #ifndef _WIN32
302 FBFILE *fb;
303 char buff[32];
304 pid_t pidfromfile;
305
306 // Don't do logging here, since we don't have log() initialised
307 if ((fb = fbopen(filename, "r")))
308 {
309 if (fbgets(buff, 20, fb) == NULL)
310 {
311 /* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
312 * strerror(errno));
313 */
314 }
315 else
316 {
317 pidfromfile = atoi(buff);
318
319 if (!kill(pidfromfile, 0))
320 {
321 // log(L_ERROR, "Server is already running");
322 printf("ircd: daemon is already running\n");
323 exit(-1);
324 }
325 }
326
327 fbclose(fb);
328 }
329 else if (errno != ENOENT)
330 {
331 // log(L_ERROR, "Error opening pid file %s", filename);
332 }
333 #endif
334 }
335
336 /* init_ssl()
337 *
338 * inputs - nothing
339 * output - nothing
340 * side effects - setups SSL context.
341 */
342 static void
343 ssl_init(void)
344 {
345 #ifdef HAVE_LIBCRYPTO
346 SSL_library_init();
347 SSL_load_error_strings();
348
349 ServerInfo.ctx = SSL_CTX_new(SSLv23_server_method());
350
351 if (!ServerInfo.ctx)
352 {
353 const char *s;
354
355 fprintf(stderr, "ERROR: Could not initialize the SSL context -- %s\n",
356 s = ERR_lib_error_string(ERR_get_error()));
357 ilog(L_CRIT, "ERROR: Could not initialize the SSL context -- %s\n", s);
358 }
359
360 SSL_CTX_set_options(ServerInfo.ctx, SSL_OP_NO_SSLv2);
361 SSL_CTX_set_options(ServerInfo.ctx, SSL_OP_TLS_ROLLBACK_BUG|SSL_OP_ALL);
362 SSL_CTX_set_verify(ServerInfo.ctx, SSL_VERIFY_NONE, NULL);
363
364 bio_spare_fd = save_spare_fd("SSL private key validation");
365 #endif /* HAVE_LIBCRYPTO */
366 }
367
368 /* init_callbacks()
369 *
370 * inputs - nothing
371 * output - nothing
372 * side effects - setups standard hook points
373 */
374 static void
375 init_callbacks(void)
376 {
377 entering_umode_cb = register_callback("entering_umode", NULL);
378 iorecv_cb = register_callback("iorecv", iorecv_default);
379 iosend_cb = register_callback("iosend", iosend_default);
380 iorecvctrl_cb = register_callback("iorecvctrl", NULL);
381 iosendctrl_cb = register_callback("iosendctrl", NULL);
382 authorize_client = register_callback("authorize_client", do_authorize_client);
383 uid_get = register_callback("uid_get", do_uid_get);
384 umode_cb = register_callback("changing_umode", change_simple_umode);
385 }
386
387 static void *
388 changing_fdlimit(va_list args)
389 {
390 int old_fdlimit = hard_fdlimit;
391 int fdmax = va_arg(args, int);
392
393 /*
394 * allow MAXCLIENTS_MIN clients even at the cost of MAX_BUFFER and
395 * some not really LEAKED_FDS
396 */
397 fdmax = LIBIO_MAX(fdmax, LEAKED_FDS + MAX_BUFFER + MAXCLIENTS_MIN);
398
399 pass_callback(fdlimit_hook, fdmax);
400
401 if (ServerInfo.max_clients > MAXCLIENTS_MAX)
402 {
403 if (old_fdlimit != 0)
404 sendto_realops_flags(UMODE_ALL, L_ALL,
405 "HARD_FDLIMIT changed to %d, adjusting MAXCLIENTS to %d",
406 hard_fdlimit, MAXCLIENTS_MAX);
407
408 ServerInfo.max_clients = MAXCLIENTS_MAX;
409 }
410
411 return NULL;
412 }
413
414 EXTERN int
415 main(int argc, char *argv[])
416 {
417 /*
418 * Check to see if the user is running us as root, which is a nono
419 */
420 #ifndef _WIN32
421 if (geteuid() == 0)
422 {
423 fprintf(stderr, "Don't run ircd as root!!!\n");
424 return 1;
425 }
426
427 // Setup corefile size immediately after boot -kre
428 setup_corefile();
429 #endif
430
431 memset(&ServerInfo, 0, sizeof(ServerInfo));
432 memset(&ServerStats, 0, sizeof(ServerStats));
433
434 ServerState.configfile = CPATH; // Server configuration file
435 ServerState.klinefile = KPATH; // Server kline file
436 ServerState.xlinefile = XPATH; // Server xline file
437 ServerState.rxlinefile = RXPATH; // Server regex xline file
438 ServerState.rklinefile = RKPATH; // Server regex kline file
439 ServerState.dlinefile = DLPATH; // dline file
440 ServerState.glinefile = GPATH; // gline log file
441 ServerState.cresvfile = CRESVPATH; // channel resv file
442 ServerState.nresvfile = NRESVPATH; // nick resv file
443 myargv = argv;
444 umask(077); // better safe than sorry --SRB
445
446 parseargs(&argc, &argv, myopts);
447
448 if (ServerState.printversion)
449 {
450 printf("ircd: version %s\n", ircd_version);
451 exit(EXIT_SUCCESS);
452 }
453
454 if (chdir(DPATH))
455 {
456 perror("chdir");
457 exit(EXIT_FAILURE);
458 }
459
460 ssl_init();
461
462 #ifndef _WIN32
463 if (!ServerState.foreground)
464 make_daemon();
465 else
466 print_startup(getpid());
467 #endif
468
469 libio_init(!ServerState.foreground);
470 outofmemory = ircd_outofmemory;
471 fdlimit_hook = install_hook(fdlimit_cb, changing_fdlimit);
472
473 check_pidfile(ServerState.pidfile);
474 setup_signals();
475 libio_get_platform(ircd_platform, sizeof(ircd_platform));
476 init_log(ServerState.logfile);
477 ServerState.can_use_v6 = check_can_use_v6();
478
479 memset(&me, 0, sizeof(me));
480 memset(&meLocalUser, 0, sizeof(meLocalUser));
481 me.localClient = &meLocalUser;
482 me.from = me.servptr = &me;
483 me.lasttime = me.since = me.firsttime = CurrentTime;
484 SetMe(&me);
485 make_server(&me);
486 dlinkAdd(&me, &me.node, &global_client_list);
487 dlinkAdd(&me, make_dlink_node(), &global_serv_list);
488
489 init_callbacks();
490 init_motd();
491 init_isupport();
492 hash_init();
493 init_ip_hash_table(); // client host ip hash table
494 clear_tree_parse();
495 init_client();
496 whowas_init();
497 watch_init();
498 init_auth();
499 channel_init();
500 init_channel_modes();
501 server_init();
502 init_conf();
503 read_conf_files(YES); // cold start init conf files
504
505 hash_add_client(&me);
506 if (me.id[0])
507 hash_add_id(&me);
508
509 init_uid();
510 initialize_global_set_options();
511
512 /*
513 * assemble_umode_buffer() has to be called after
514 * reading conf/loading modules.
515 */
516 assemble_umode_buffer();
517
518 write_pidfile(ServerState.pidfile);
519
520 ilog(L_NOTICE, "Server Ready");
521
522 // We want try_connections to be called as soon as possible now! -- adrian
523 // No, 'cause after a restart it would cause all sorts of nick collides
524 eventAddIsh("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);
525
526 eventAddIsh("collect_zipstats", collect_zipstats, NULL, ZIPSTATS_TIME);
527
528 // Setup the timeout check. I'll shift it later :) -- adrian
529 eventAddIsh("comm_checktimeouts", comm_checktimeouts, NULL, 1);
530
531 io_loop();
532 return 0;
533 }
534
535 #else
536
537 #include <windows.h>
538
539 extern __declspec(dllimport) main(int, char **);
540
541 /*
542 * Initial entry point for Win32 GUI applications, called by the C runtime.
543 *
544 * It should be only a wrapper for main(), since when compiled as a console
545 * application, main() is called instead.
546 */
547 int WINAPI
548 WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
549 LPSTR lpCmdLine, int nCmdShow)
550 {
551 /* Do we really need these pidfile, logfile etc arguments?
552 * And we are not on a console, so -help or -foreground is meaningless. */
553
554 char *argv[2] = {"ircd", NULL};
555
556 return main(1, argv);
557 }
558
559 #endif

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