2 * ircd-ratbox: A slightly useful ircd.
3 * ircd.c: Starts up and runs the ircd.
5 * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
6 * Copyright (C) 1996-2002 Hybrid Development Team
7 * Copyright (C) 2002-2005 ircd-ratbox development team
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
24 * $Id: ircd.c 3380 2007-04-03 22:25:11Z jilles $
27 #include "ratbox_lib.h"
37 #include "irc_string.h"
38 #include "ircd_signal.h"
39 #include "sprintf_irc.h"
40 #include "msg.h" /* msgtab */
49 #include "s_serv.h" /* try_connections */
54 #include "supported.h"
58 #include "ircd_getopt.h"
62 #include "s_newconf.h"
65 #include "patchlevel.h"
69 /* /quote set variables */
70 struct SetOptions GlobalSetOptions
;
72 /* configuration set from ircd.conf */
73 struct config_file_entry ConfigFileEntry
;
74 /* server info set from ircd.conf */
75 struct server_info ServerInfo
;
76 /* admin info set from ircd.conf */
77 struct admin_info AdminInfo
;
80 struct ServerStatistics ServerStats
;
83 struct timeval SystemTime
;
84 struct Client me
; /* That's me */
85 struct LocalUser meLocalUser
; /* That's also part of me */
87 rb_dlink_list lclient_list
= { NULL
, NULL
, 0 };
88 rb_dlink_list global_client_list
= { NULL
, NULL
, 0 };
89 rb_dlink_list global_channel_list
= { NULL
, NULL
, 0 };
91 rb_dlink_list unknown_list
; /* unknown clients ON this server only */
92 rb_dlink_list serv_list
; /* local servers to this server ONLY */
93 rb_dlink_list global_serv_list
; /* global servers on the network */
94 rb_dlink_list local_oper_list
; /* our opers, duplicated in lclient_list */
95 rb_dlink_list oper_list
; /* network opers */
99 int default_server_capabs
= CAP_MASK
;
107 unsigned long initialVMTop
= 0; /* top of virtual memory at init */
108 const char *logFileName
= LPATH
;
109 const char *pidFileName
= PPATH
;
113 int dorehashbans
= 0;
115 int kline_queued
= 0;
116 int server_state_foreground
= 0;
117 int opers_see_all_users
= 0;
121 int testing_conf
= 0;
123 struct config_channel_entry ConfigChannel
;
129 rb_bh
*client_heap
= NULL
;
130 rb_bh
*lclient_heap
= NULL
;
131 rb_bh
*pclient_heap
= NULL
;
133 char current_uid
[IDLEN
];
138 rb_bh
*patricia_heap
;
145 * print_startup - print startup information
148 print_startup(int pid
)
150 inotice("now running in %s mode from %s as pid %d ...",
151 !server_state_foreground
? "background" : "foreground",
152 ConfigFileEntry
.dpath
, pid
);
154 /* let the parent process know the initialization was successful
156 if (!server_state_foreground
)
161 open("/dev/null", O_RDWR
);
167 ircd_log_cb(const char *str
)
169 ilog(L_MAIN
, "%s", str
);
173 ircd_restart_cb(const char *str
)
179 * Why EXIT_FAILURE here?
180 * Because if ircd_die_cb() is called it's because of a fatal
181 * error inside libcharybdis, and we don't know how to handle the
182 * exception, so it is logical to return a FAILURE exit code here.
186 ircd_die_cb(const char *str
)
190 /* Try to get the message out to currently logged in operators. */
191 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
, "Server panic! %s", str
);
192 inotice("server panic: %s", str
);
202 * inputs - boot_daemon flag
204 * side effects - if boot_daemon flag is not set, don't daemonize
209 #if defined(RLIMIT_NOFILE) && defined(HAVE_SYS_RESOURCE_H)
212 if(!getrlimit(RLIMIT_NOFILE
, &limit
))
214 maxconnections
= limit
.rlim_cur
;
215 if(maxconnections
<= MAX_BUFFER
)
217 fprintf(stderr
, "ERROR: Shell FD limits are too low.\n");
218 fprintf(stderr
, "ERROR: ircd-ratbox reserves %d FDs, shell limits must be above this\n", MAX_BUFFER
);
223 #endif /* RLIMIT_FD_MAX */
224 maxconnections
= MAXCONNECTIONS
;
241 if((pid
= fork()) < 0)
249 /* Wait for initialization to finish, successfully or
250 * unsuccessfully. Until this point the child may still
251 * write to stdout/stderr.
253 if (read(pip
[0], &c
, 1) > 0)
268 static int printVersion
= 0;
270 struct lgetopt myopts
[] = {
271 {"dlinefile", &ConfigFileEntry
.dlinefile
,
272 STRING
, "File to use for dlines.conf"},
273 {"configfile", &ConfigFileEntry
.configfile
,
274 STRING
, "File to use for ircd.conf"},
275 {"klinefile", &ConfigFileEntry
.klinefile
,
276 STRING
, "File to use for kline.conf"},
277 {"xlinefile", &ConfigFileEntry
.xlinefile
,
278 STRING
, "File to use for xline.conf"},
279 {"resvfile", &ConfigFileEntry
.resvfile
,
280 STRING
, "File to use for resv.conf"},
281 {"logfile", &logFileName
,
282 STRING
, "File to use for ircd.log"},
283 {"pidfile", &pidFileName
,
284 STRING
, "File to use for process ID"},
285 {"foreground", &server_state_foreground
,
286 YESNO
, "Run in foreground (don't detach)"},
287 {"version", &printVersion
,
288 YESNO
, "Print version and exit"},
289 {"conftest", &testing_conf
,
290 YESNO
, "Test the configuration files and exit"},
291 {"help", NULL
, USAGE
, "Print this text"},
292 {NULL
, NULL
, STRING
, NULL
},
296 check_rehash(void *unused
)
299 * Check to see whether we have to rehash the configuration ..
315 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
316 "Got signal SIGUSR1, reloading ircd motd file");
317 free_cachefile(user_motd
);
318 user_motd
= cache_file(MPATH
, "ircd.motd", 0);
324 * initalialize_global_set_options
328 * side effects - This sets all global set options needed
331 initialize_global_set_options(void)
333 memset(&GlobalSetOptions
, 0, sizeof(GlobalSetOptions
));
334 /* memset( &ConfigFileEntry, 0, sizeof(ConfigFileEntry)); */
336 GlobalSetOptions
.maxclients
= ServerInfo
.default_max_clients
;
338 if(GlobalSetOptions
.maxclients
> (maxconnections
- MAX_BUFFER
) || (GlobalSetOptions
.maxclients
<= 0))
339 GlobalSetOptions
.maxclients
= maxconnections
- MAX_BUFFER
;
341 GlobalSetOptions
.autoconn
= 1;
343 GlobalSetOptions
.spam_time
= MIN_JOIN_LEAVE_TIME
;
344 GlobalSetOptions
.spam_num
= MAX_JOIN_LEAVE_COUNT
;
346 if(ConfigFileEntry
.default_floodcount
)
347 GlobalSetOptions
.floodcount
= ConfigFileEntry
.default_floodcount
;
349 GlobalSetOptions
.floodcount
= 10;
351 split_servers
= ConfigChannel
.default_split_server_count
;
352 split_users
= ConfigChannel
.default_split_user_count
;
354 if(split_users
&& split_servers
355 && (ConfigChannel
.no_create_on_split
|| ConfigChannel
.no_join_on_split
))
361 GlobalSetOptions
.ident_timeout
= IDENT_TIMEOUT
;
363 strlcpy(GlobalSetOptions
.operstring
,
364 ConfigFileEntry
.default_operstring
,
365 sizeof(GlobalSetOptions
.operstring
));
366 strlcpy(GlobalSetOptions
.adminstring
,
367 ConfigFileEntry
.default_adminstring
,
368 sizeof(GlobalSetOptions
.adminstring
));
370 /* memset( &ConfigChannel, 0, sizeof(ConfigChannel)); */
372 /* End of global set options */
377 * initialize_server_capabs
383 initialize_server_capabs(void)
385 default_server_capabs
&= ~CAP_ZIP
;
392 * inputs - filename+path of pid file
394 * side effects - write the pid of the ircd to filename
397 write_pidfile(const char *filename
)
401 if((fb
= fopen(filename
, "w")))
403 unsigned int pid
= (unsigned int) getpid();
405 rb_snprintf(buff
, sizeof(buff
), "%u\n", pid
);
406 if((fputs(buff
, fb
) == -1))
408 ilog(L_MAIN
, "Error writing %u to pid file %s (%s)",
409 pid
, filename
, strerror(errno
));
416 ilog(L_MAIN
, "Error opening pid file %s", filename
);
423 * inputs - filename+path of pid file
425 * side effects - reads pid from pidfile and checks if ircd is in process
426 * list. if it is, gracefully exits
430 check_pidfile(const char *filename
)
436 /* Don't do logging here, since we don't have log() initialised */
437 if((fb
= fopen(filename
, "r")))
439 if(fgets(buff
, 20, fb
) != NULL
)
441 pidfromfile
= atoi(buff
);
442 if(!kill(pidfromfile
, 0))
444 printf("ircd: daemon is already running\n");
457 * side effects - setups corefile to system limits.
463 #ifdef HAVE_SYS_RESOURCE_H
464 struct rlimit rlim
; /* resource limits */
466 /* Set corefilesize to maximum */
467 if(!getrlimit(RLIMIT_CORE
, &rlim
))
469 rlim
.rlim_cur
= rlim
.rlim_max
;
470 setrlimit(RLIMIT_CORE
, &rlim
);
475 struct ev_entry
*check_splitmode_ev
= NULL
;
480 * Initializes the IRCd.
482 * Inputs - number of commandline args, args themselves
484 * Side Effects - this is where the ircd gets going right now
487 main(int argc
, char *argv
[])
491 /* Check to see if the user is running us as root, which is a nono */
494 fprintf(stderr
, "Don't run ircd as root!!!\n");
499 * Setup corefile size immediately after boot -kre
503 /* It ain't random, but it ought to be a little harder to guess */
504 srand(SystemTime
.tv_sec
^ (SystemTime
.tv_usec
| (getpid() << 20)));
505 memset(&me
, 0, sizeof(me
));
506 memset(&meLocalUser
, 0, sizeof(meLocalUser
));
507 me
.localClient
= &meLocalUser
;
509 /* Make sure all lists are zeroed */
510 memset(&unknown_list
, 0, sizeof(unknown_list
));
511 memset(&lclient_list
, 0, sizeof(lclient_list
));
512 memset(&serv_list
, 0, sizeof(serv_list
));
513 memset(&global_serv_list
, 0, sizeof(global_serv_list
));
514 memset(&local_oper_list
, 0, sizeof(local_oper_list
));
515 memset(&oper_list
, 0, sizeof(oper_list
));
517 rb_dlinkAddTail(&me
, &me
.node
, &global_client_list
);
519 memset(&Count
, 0, sizeof(Count
));
520 memset(&ServerInfo
, 0, sizeof(ServerInfo
));
521 memset(&AdminInfo
, 0, sizeof(AdminInfo
));
522 memset(&ServerStats
, 0, sizeof(struct ServerStatistics
));
524 /* Initialise the channel capability usage counts... */
525 init_chcap_usage_counts();
527 ConfigFileEntry
.dpath
= DPATH
;
528 ConfigFileEntry
.configfile
= CPATH
; /* Server configuration file */
529 ConfigFileEntry
.klinefile
= KPATH
; /* Server kline file */
530 ConfigFileEntry
.dlinefile
= DLPATH
; /* dline file */
531 ConfigFileEntry
.xlinefile
= XPATH
;
532 ConfigFileEntry
.resvfile
= RESVPATH
;
533 ConfigFileEntry
.connect_timeout
= 30; /* Default to 30 */
535 umask(077); /* better safe than sorry --SRB */
537 parseargs(&argc
, &argv
, myopts
);
541 printf("ircd: version %s\n", ircd_version
);
545 if(chdir(ConfigFileEntry
.dpath
))
547 fprintf(stderr
, "Unable to chdir to %s: %s\n", ConfigFileEntry
.dpath
, strerror(errno
));
554 server_state_foreground
= 1;
558 server_state_foreground
= 1;
560 /* Make sure fd 0, 1 and 2 are in use -- jilles */
563 fd
= open("/dev/null", O_RDWR
);
564 } while (fd
< 2 && fd
!= -1);
570 /* Check if there is pidfile and daemon already running */
573 check_pidfile(pidFileName
);
575 if(!server_state_foreground
)
577 inotice("starting %s ...", ircd_version
);
580 /* Init the event subsystem */
582 rb_lib_init(ircd_log_cb
, ircd_restart_cb
, ircd_die_cb
, !server_state_foreground
, maxconnections
, DNODE_HEAP_SIZE
, FD_HEAP_SIZE
);
583 rb_linebuf_init(LINEBUF_HEAP_SIZE
);
590 clear_scache_hash_table(); /* server cache name table */
604 #ifndef STATIC_MODULES
605 load_core_modules(1);
607 init_auth(); /* Initialise the auth code */
608 init_resolver(); /* Needs to be setup before the io loop */
611 fprintf(stderr
, "\nBeginning config test\n");
612 read_conf_files(YES
); /* cold start init conf files */
614 #ifndef STATIC_MODULES
616 mod_add_path(MODULE_DIR
);
617 mod_add_path(MODULE_DIR
"/autoload");
622 initialize_server_capabs(); /* Set up default_server_capabs */
623 initialize_global_set_options();
625 if(ServerInfo
.name
== NULL
)
627 ierror("no server name specified in serverinfo block.");
630 strlcpy(me
.name
, ServerInfo
.name
, sizeof(me
.name
));
632 if(ServerInfo
.sid
[0] == '\0')
634 ierror("no server sid specified in serverinfo block.");
637 strcpy(me
.id
, ServerInfo
.sid
);
640 /* serverinfo{} description must exist. If not, error out. */
641 if(ServerInfo
.description
== NULL
)
643 ierror("no server description specified in serverinfo block.");
646 strlcpy(me
.info
, ServerInfo
.description
, sizeof(me
.info
));
648 if(ServerInfo
.ssl_cert
!= NULL
&& ServerInfo
.ssl_private_key
!= NULL
)
650 /* just do the rb_setup_ssl_server to validate the config */
651 if(!rb_setup_ssl_server(ServerInfo
.ssl_cert
, ServerInfo
.ssl_private_key
, ServerInfo
.ssl_dh_params
))
653 ilog(L_MAIN
, "WARNING: Unable to setup SSL.");
662 fprintf(stderr
, "\nConfig testing complete.\n");
664 return 0; /* Why? We want the launcher to exit out. */
671 startup_time
= rb_current_time();
672 add_to_client_hash(me
.name
, &me
);
673 add_to_id_hash(me
.id
, &me
);
674 me
.serv
->nameinfo
= scache_connect(me
.name
, me
.info
, 0);
676 rb_dlinkAddAlloc(&me
, &global_serv_list
);
678 construct_umodebuf();
681 write_pidfile(pidFileName
);
685 ilog(L_MAIN
, "Server Ready");
687 /* We want try_connections to be called as soon as possible now! -- adrian */
688 /* No, 'cause after a restart it would cause all sorts of nick collides */
689 /* um. by waiting even longer, that just means we have even *more*
690 * nick collisions. what a stupid idea. set an event for the IO loop --fl
692 rb_event_addish("try_connections", try_connections
, NULL
, STARTUP_CONNECTIONS_TIME
);
693 rb_event_addonce("try_connections_startup", try_connections
, NULL
, 0);
695 /* Setup the timeout check. I'll shift it later :) -- adrian */
696 rb_event_addish("rb_checktimeouts", rb_checktimeouts
, NULL
, 1);
698 rb_event_add("check_rehash", check_rehash
, NULL
, 1);
701 check_splitmode_ev
= rb_event_add("check_splitmode", check_splitmode
, NULL
, 2);
703 print_startup(getpid());