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"
38 #include "ircd_signal.h"
39 #include "msg.h" /* msgtab */
48 #include "s_serv.h" /* try_connections */
53 #include "supported.h"
57 #include "ircd_getopt.h"
61 #include "s_newconf.h"
64 #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 };
90 rb_dlink_list unknown_list
; /* unknown clients ON this server only */
91 rb_dlink_list serv_list
; /* local servers to this server ONLY */
92 rb_dlink_list global_serv_list
; /* global servers on the network */
93 rb_dlink_list local_oper_list
; /* our opers, duplicated in lclient_list */
94 rb_dlink_list oper_list
; /* network opers */
98 int default_server_capabs
= CAP_MASK
;
106 unsigned long initialVMTop
= 0; /* top of virtual memory at init */
107 const char *logFileName
= LPATH
;
108 const char *pidFileName
= PPATH
;
112 int dorehashbans
= 0;
114 int kline_queued
= 0;
115 int server_state_foreground
= 0;
116 int opers_see_all_users
= 0;
120 int testing_conf
= 0;
125 rb_bh
*patricia_heap
;
132 ircd_shutdown(const char *reason
)
134 struct Client
*target_p
;
137 RB_DLINK_FOREACH(ptr
, lclient_list
.head
)
139 target_p
= ptr
->data
;
141 sendto_one(target_p
, ":%s NOTICE %s :Server Terminating. %s",
142 me
.name
, target_p
->name
, reason
);
145 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
147 target_p
= ptr
->data
;
149 sendto_one(target_p
, ":%s ERROR :Terminated by %s",
153 ilog(L_MAIN
, "Server Terminating. %s", reason
);
161 * print_startup - print startup information
164 print_startup(int pid
)
166 inotice("now running in %s mode from %s as pid %d ...",
167 !server_state_foreground
? "background" : "foreground",
168 ConfigFileEntry
.dpath
, pid
);
170 /* let the parent process know the initialization was successful
172 if (!server_state_foreground
)
177 open("/dev/null", O_RDWR
);
183 ircd_log_cb(const char *str
)
185 ilog(L_MAIN
, "%s", str
);
189 ircd_restart_cb(const char *str
)
195 * Why EXIT_FAILURE here?
196 * Because if ircd_die_cb() is called it's because of a fatal
197 * error inside libcharybdis, and we don't know how to handle the
198 * exception, so it is logical to return a FAILURE exit code here.
202 ircd_die_cb(const char *str
)
206 /* Try to get the message out to currently logged in operators. */
207 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
, "Server panic! %s", str
);
208 inotice("server panic: %s", str
);
218 * inputs - boot_daemon flag
220 * side effects - if boot_daemon flag is not set, don't daemonize
225 #if defined(RLIMIT_NOFILE) && defined(HAVE_SYS_RESOURCE_H)
228 if(!getrlimit(RLIMIT_NOFILE
, &limit
))
230 maxconnections
= limit
.rlim_cur
;
231 if(maxconnections
<= MAX_BUFFER
)
233 fprintf(stderr
, "ERROR: Shell FD limits are too low.\n");
234 fprintf(stderr
, "ERROR: ircd-ratbox reserves %d FDs, shell limits must be above this\n", MAX_BUFFER
);
239 #endif /* RLIMIT_FD_MAX */
240 maxconnections
= MAXCONNECTIONS
;
257 if((pid
= fork()) < 0)
265 /* Wait for initialization to finish, successfully or
266 * unsuccessfully. Until this point the child may still
267 * write to stdout/stderr.
269 if (read(pip
[0], &c
, 1) > 0)
284 static int printVersion
= 0;
286 struct lgetopt myopts
[] = {
287 {"dlinefile", &ConfigFileEntry
.dlinefile
,
288 STRING
, "File to use for dlines.conf"},
289 {"configfile", &ConfigFileEntry
.configfile
,
290 STRING
, "File to use for ircd.conf"},
291 {"klinefile", &ConfigFileEntry
.klinefile
,
292 STRING
, "File to use for kline.conf"},
293 {"xlinefile", &ConfigFileEntry
.xlinefile
,
294 STRING
, "File to use for xline.conf"},
295 {"resvfile", &ConfigFileEntry
.resvfile
,
296 STRING
, "File to use for resv.conf"},
297 {"logfile", &logFileName
,
298 STRING
, "File to use for ircd.log"},
299 {"pidfile", &pidFileName
,
300 STRING
, "File to use for process ID"},
301 {"foreground", &server_state_foreground
,
302 YESNO
, "Run in foreground (don't detach)"},
303 {"version", &printVersion
,
304 YESNO
, "Print version and exit"},
305 {"conftest", &testing_conf
,
306 YESNO
, "Test the configuration files and exit"},
307 {"help", NULL
, USAGE
, "Print this text"},
308 {NULL
, NULL
, STRING
, NULL
},
312 check_rehash(void *unused
)
315 * Check to see whether we have to rehash the configuration ..
331 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
332 "Got signal SIGUSR1, reloading ircd motd file");
339 * initalialize_global_set_options
343 * side effects - This sets all global set options needed
346 initialize_global_set_options(void)
348 memset(&GlobalSetOptions
, 0, sizeof(GlobalSetOptions
));
349 /* memset( &ConfigFileEntry, 0, sizeof(ConfigFileEntry)); */
351 GlobalSetOptions
.maxclients
= ServerInfo
.default_max_clients
;
353 if(GlobalSetOptions
.maxclients
> (maxconnections
- MAX_BUFFER
) || (GlobalSetOptions
.maxclients
<= 0))
354 GlobalSetOptions
.maxclients
= maxconnections
- MAX_BUFFER
;
356 GlobalSetOptions
.autoconn
= 1;
358 GlobalSetOptions
.spam_time
= MIN_JOIN_LEAVE_TIME
;
359 GlobalSetOptions
.spam_num
= MAX_JOIN_LEAVE_COUNT
;
361 if(ConfigFileEntry
.default_floodcount
)
362 GlobalSetOptions
.floodcount
= ConfigFileEntry
.default_floodcount
;
364 GlobalSetOptions
.floodcount
= 10;
366 split_servers
= ConfigChannel
.default_split_server_count
;
367 split_users
= ConfigChannel
.default_split_user_count
;
369 if(split_users
&& split_servers
370 && (ConfigChannel
.no_create_on_split
|| ConfigChannel
.no_join_on_split
))
376 GlobalSetOptions
.ident_timeout
= IDENT_TIMEOUT
;
378 rb_strlcpy(GlobalSetOptions
.operstring
,
379 ConfigFileEntry
.default_operstring
,
380 sizeof(GlobalSetOptions
.operstring
));
381 rb_strlcpy(GlobalSetOptions
.adminstring
,
382 ConfigFileEntry
.default_adminstring
,
383 sizeof(GlobalSetOptions
.adminstring
));
385 /* memset( &ConfigChannel, 0, sizeof(ConfigChannel)); */
387 /* End of global set options */
392 * initialize_server_capabs
398 initialize_server_capabs(void)
400 default_server_capabs
&= ~CAP_ZIP
;
407 * inputs - filename+path of pid file
409 * side effects - write the pid of the ircd to filename
412 write_pidfile(const char *filename
)
416 if((fb
= fopen(filename
, "w")))
418 unsigned int pid
= (unsigned int) getpid();
420 rb_snprintf(buff
, sizeof(buff
), "%u\n", pid
);
421 if((fputs(buff
, fb
) == -1))
423 ilog(L_MAIN
, "Error writing %u to pid file %s (%s)",
424 pid
, filename
, strerror(errno
));
431 ilog(L_MAIN
, "Error opening pid file %s", filename
);
438 * inputs - filename+path of pid file
440 * side effects - reads pid from pidfile and checks if ircd is in process
441 * list. if it is, gracefully exits
445 check_pidfile(const char *filename
)
451 /* Don't do logging here, since we don't have log() initialised */
452 if((fb
= fopen(filename
, "r")))
454 if(fgets(buff
, 20, fb
) != NULL
)
456 pidfromfile
= atoi(buff
);
457 if(!kill(pidfromfile
, 0))
459 printf("ircd: daemon is already running\n");
472 * side effects - setups corefile to system limits.
478 #ifdef HAVE_SYS_RESOURCE_H
479 struct rlimit rlim
; /* resource limits */
481 /* Set corefilesize to maximum */
482 if(!getrlimit(RLIMIT_CORE
, &rlim
))
484 rlim
.rlim_cur
= rlim
.rlim_max
;
485 setrlimit(RLIMIT_CORE
, &rlim
);
490 struct ev_entry
*check_splitmode_ev
= NULL
;
493 seed_with_urandom(void)
498 fd
= open("/dev/urandom", O_RDONLY
);
501 if(read(fd
, &seed
, sizeof(seed
)) == sizeof(seed
))
512 seed_with_clock(void)
514 const struct timeval
*tv
;
516 tv
= rb_current_time_tv();
517 srand(tv
->tv_sec
^ (tv
->tv_usec
| (getpid() << 20)));
521 seed_random(void *unused
)
524 if(rb_get_random(&seed
, sizeof(seed
)) == -1)
526 if(!seed_with_urandom())
536 * Initializes the IRCd.
538 * Inputs - number of commandline args, args themselves
540 * Side Effects - this is where the ircd gets going right now
543 main(int argc
, char *argv
[])
547 /* Check to see if the user is running us as root, which is a nono */
550 fprintf(stderr
, "Don't run ircd as root!!!\n");
555 * Setup corefile size immediately after boot -kre
559 /* It ain't random, but it ought to be a little harder to guess */
560 srand(SystemTime
.tv_sec
^ (SystemTime
.tv_usec
| (getpid() << 20)));
561 memset(&me
, 0, sizeof(me
));
562 memset(&meLocalUser
, 0, sizeof(meLocalUser
));
563 me
.localClient
= &meLocalUser
;
565 /* Make sure all lists are zeroed */
566 memset(&unknown_list
, 0, sizeof(unknown_list
));
567 memset(&lclient_list
, 0, sizeof(lclient_list
));
568 memset(&serv_list
, 0, sizeof(serv_list
));
569 memset(&global_serv_list
, 0, sizeof(global_serv_list
));
570 memset(&local_oper_list
, 0, sizeof(local_oper_list
));
571 memset(&oper_list
, 0, sizeof(oper_list
));
573 rb_dlinkAddTail(&me
, &me
.node
, &global_client_list
);
575 memset(&Count
, 0, sizeof(Count
));
576 memset(&ServerInfo
, 0, sizeof(ServerInfo
));
577 memset(&AdminInfo
, 0, sizeof(AdminInfo
));
578 memset(&ServerStats
, 0, sizeof(struct ServerStatistics
));
580 /* Initialise the channel capability usage counts... */
581 init_chcap_usage_counts();
583 ConfigFileEntry
.dpath
= DPATH
;
584 ConfigFileEntry
.configfile
= CPATH
; /* Server configuration file */
585 ConfigFileEntry
.klinefile
= KPATH
; /* Server kline file */
586 ConfigFileEntry
.dlinefile
= DLPATH
; /* dline file */
587 ConfigFileEntry
.xlinefile
= XPATH
;
588 ConfigFileEntry
.resvfile
= RESVPATH
;
589 ConfigFileEntry
.connect_timeout
= 30; /* Default to 30 */
591 umask(077); /* better safe than sorry --SRB */
593 parseargs(&argc
, &argv
, myopts
);
597 printf("ircd: version %s(%s)\n", ircd_version
, serno
);
601 if(chdir(ConfigFileEntry
.dpath
))
603 fprintf(stderr
, "Unable to chdir to %s: %s\n", ConfigFileEntry
.dpath
, strerror(errno
));
610 server_state_foreground
= 1;
614 server_state_foreground
= 1;
616 /* Make sure fd 0, 1 and 2 are in use -- jilles */
619 fd
= open("/dev/null", O_RDWR
);
620 } while (fd
< 2 && fd
!= -1);
626 /* Check if there is pidfile and daemon already running */
629 check_pidfile(pidFileName
);
631 if(!server_state_foreground
)
633 inotice("starting %s ...", ircd_version
);
636 /* Init the event subsystem */
638 rb_lib_init(ircd_log_cb
, ircd_restart_cb
, ircd_die_cb
, !server_state_foreground
, maxconnections
, DNODE_HEAP_SIZE
, FD_HEAP_SIZE
);
639 rb_linebuf_init(LINEBUF_HEAP_SIZE
);
646 clear_scache_hash_table(); /* server cache name table */
660 #ifndef STATIC_MODULES
661 load_core_modules(1);
663 init_auth(); /* Initialise the auth code */
664 init_resolver(); /* Needs to be setup before the io loop */
667 fprintf(stderr
, "\nBeginning config test\n");
668 read_conf_files(YES
); /* cold start init conf files */
670 #ifndef STATIC_MODULES
672 mod_add_path(MODULE_DIR
);
673 mod_add_path(MODULE_DIR
"/autoload");
678 initialize_server_capabs(); /* Set up default_server_capabs */
679 initialize_global_set_options();
681 if(ServerInfo
.name
== NULL
)
683 ierror("no server name specified in serverinfo block.");
686 rb_strlcpy(me
.name
, ServerInfo
.name
, sizeof(me
.name
));
688 if(ServerInfo
.sid
[0] == '\0')
690 ierror("no server sid specified in serverinfo block.");
693 strcpy(me
.id
, ServerInfo
.sid
);
696 /* serverinfo{} description must exist. If not, error out. */
697 if(ServerInfo
.description
== NULL
)
699 ierror("no server description specified in serverinfo block.");
702 rb_strlcpy(me
.info
, ServerInfo
.description
, sizeof(me
.info
));
704 if(ServerInfo
.ssl_cert
!= NULL
&& ServerInfo
.ssl_private_key
!= NULL
)
706 /* just do the rb_setup_ssl_server to validate the config */
707 if(!rb_setup_ssl_server(ServerInfo
.ssl_cert
, ServerInfo
.ssl_private_key
, ServerInfo
.ssl_dh_params
))
709 ilog(L_MAIN
, "WARNING: Unable to setup SSL.");
718 fprintf(stderr
, "\nConfig testing complete.\n");
720 return 0; /* Why? We want the launcher to exit out. */
727 startup_time
= rb_current_time();
728 add_to_client_hash(me
.name
, &me
);
729 add_to_id_hash(me
.id
, &me
);
730 me
.serv
->nameinfo
= scache_connect(me
.name
, me
.info
, 0);
732 rb_dlinkAddAlloc(&me
, &global_serv_list
);
734 construct_umodebuf();
735 construct_noparam_modes();
738 write_pidfile(pidFileName
);
742 ilog(L_MAIN
, "Server Ready");
744 /* We want try_connections to be called as soon as possible now! -- adrian */
745 /* No, 'cause after a restart it would cause all sorts of nick collides */
746 /* um. by waiting even longer, that just means we have even *more*
747 * nick collisions. what a stupid idea. set an event for the IO loop --fl
749 rb_event_addish("try_connections", try_connections
, NULL
, STARTUP_CONNECTIONS_TIME
);
750 rb_event_addonce("try_connections_startup", try_connections
, NULL
, 0);
751 rb_event_add("check_rehash", check_rehash
, NULL
, 1);
752 rb_event_addish("reseed_srand", seed_random
, NULL
, 300); /* reseed every 10 minutes */
755 check_splitmode_ev
= rb_event_add("check_splitmode", check_splitmode
, NULL
, 2);
757 print_startup(getpid());