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;
122 rb_bh
*client_heap
= NULL
;
123 rb_bh
*lclient_heap
= NULL
;
124 rb_bh
*pclient_heap
= NULL
;
126 char current_uid
[IDLEN
];
131 rb_bh
*patricia_heap
;
138 ircd_shutdown(const char *reason
)
140 struct Client
*target_p
;
143 RB_DLINK_FOREACH(ptr
, lclient_list
.head
)
145 target_p
= ptr
->data
;
147 sendto_one(target_p
, ":%s NOTICE %s :Server Terminating. %s",
148 me
.name
, target_p
->name
, reason
);
151 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
153 target_p
= ptr
->data
;
155 sendto_one(target_p
, ":%s ERROR :Terminated by %s",
159 ilog(L_MAIN
, "Server Terminating. %s", reason
);
167 * print_startup - print startup information
170 print_startup(int pid
)
172 inotice("now running in %s mode from %s as pid %d ...",
173 !server_state_foreground
? "background" : "foreground",
174 ConfigFileEntry
.dpath
, pid
);
176 /* let the parent process know the initialization was successful
178 if (!server_state_foreground
)
183 open("/dev/null", O_RDWR
);
189 ircd_log_cb(const char *str
)
191 ilog(L_MAIN
, "%s", str
);
195 ircd_restart_cb(const char *str
)
201 * Why EXIT_FAILURE here?
202 * Because if ircd_die_cb() is called it's because of a fatal
203 * error inside libcharybdis, and we don't know how to handle the
204 * exception, so it is logical to return a FAILURE exit code here.
208 ircd_die_cb(const char *str
)
212 /* Try to get the message out to currently logged in operators. */
213 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
, "Server panic! %s", str
);
214 inotice("server panic: %s", str
);
224 * inputs - boot_daemon flag
226 * side effects - if boot_daemon flag is not set, don't daemonize
231 #if defined(RLIMIT_NOFILE) && defined(HAVE_SYS_RESOURCE_H)
234 if(!getrlimit(RLIMIT_NOFILE
, &limit
))
236 maxconnections
= limit
.rlim_cur
;
237 if(maxconnections
<= MAX_BUFFER
)
239 fprintf(stderr
, "ERROR: Shell FD limits are too low.\n");
240 fprintf(stderr
, "ERROR: ircd-ratbox reserves %d FDs, shell limits must be above this\n", MAX_BUFFER
);
245 #endif /* RLIMIT_FD_MAX */
246 maxconnections
= MAXCONNECTIONS
;
263 if((pid
= fork()) < 0)
271 /* Wait for initialization to finish, successfully or
272 * unsuccessfully. Until this point the child may still
273 * write to stdout/stderr.
275 if (read(pip
[0], &c
, 1) > 0)
290 static int printVersion
= 0;
292 struct lgetopt myopts
[] = {
293 {"dlinefile", &ConfigFileEntry
.dlinefile
,
294 STRING
, "File to use for dlines.conf"},
295 {"configfile", &ConfigFileEntry
.configfile
,
296 STRING
, "File to use for ircd.conf"},
297 {"klinefile", &ConfigFileEntry
.klinefile
,
298 STRING
, "File to use for kline.conf"},
299 {"xlinefile", &ConfigFileEntry
.xlinefile
,
300 STRING
, "File to use for xline.conf"},
301 {"resvfile", &ConfigFileEntry
.resvfile
,
302 STRING
, "File to use for resv.conf"},
303 {"logfile", &logFileName
,
304 STRING
, "File to use for ircd.log"},
305 {"pidfile", &pidFileName
,
306 STRING
, "File to use for process ID"},
307 {"foreground", &server_state_foreground
,
308 YESNO
, "Run in foreground (don't detach)"},
309 {"version", &printVersion
,
310 YESNO
, "Print version and exit"},
311 {"conftest", &testing_conf
,
312 YESNO
, "Test the configuration files and exit"},
313 {"help", NULL
, USAGE
, "Print this text"},
314 {NULL
, NULL
, STRING
, NULL
},
318 check_rehash(void *unused
)
321 * Check to see whether we have to rehash the configuration ..
337 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
338 "Got signal SIGUSR1, reloading ircd motd file");
345 * initalialize_global_set_options
349 * side effects - This sets all global set options needed
352 initialize_global_set_options(void)
354 memset(&GlobalSetOptions
, 0, sizeof(GlobalSetOptions
));
355 /* memset( &ConfigFileEntry, 0, sizeof(ConfigFileEntry)); */
357 GlobalSetOptions
.maxclients
= ServerInfo
.default_max_clients
;
359 if(GlobalSetOptions
.maxclients
> (maxconnections
- MAX_BUFFER
) || (GlobalSetOptions
.maxclients
<= 0))
360 GlobalSetOptions
.maxclients
= maxconnections
- MAX_BUFFER
;
362 GlobalSetOptions
.autoconn
= 1;
364 GlobalSetOptions
.spam_time
= MIN_JOIN_LEAVE_TIME
;
365 GlobalSetOptions
.spam_num
= MAX_JOIN_LEAVE_COUNT
;
367 if(ConfigFileEntry
.default_floodcount
)
368 GlobalSetOptions
.floodcount
= ConfigFileEntry
.default_floodcount
;
370 GlobalSetOptions
.floodcount
= 10;
372 split_servers
= ConfigChannel
.default_split_server_count
;
373 split_users
= ConfigChannel
.default_split_user_count
;
375 if(split_users
&& split_servers
376 && (ConfigChannel
.no_create_on_split
|| ConfigChannel
.no_join_on_split
))
382 GlobalSetOptions
.ident_timeout
= IDENT_TIMEOUT
;
384 rb_strlcpy(GlobalSetOptions
.operstring
,
385 ConfigFileEntry
.default_operstring
,
386 sizeof(GlobalSetOptions
.operstring
));
387 rb_strlcpy(GlobalSetOptions
.adminstring
,
388 ConfigFileEntry
.default_adminstring
,
389 sizeof(GlobalSetOptions
.adminstring
));
391 /* memset( &ConfigChannel, 0, sizeof(ConfigChannel)); */
393 /* End of global set options */
398 * initialize_server_capabs
404 initialize_server_capabs(void)
406 default_server_capabs
&= ~CAP_ZIP
;
413 * inputs - filename+path of pid file
415 * side effects - write the pid of the ircd to filename
418 write_pidfile(const char *filename
)
422 if((fb
= fopen(filename
, "w")))
424 unsigned int pid
= (unsigned int) getpid();
426 rb_snprintf(buff
, sizeof(buff
), "%u\n", pid
);
427 if((fputs(buff
, fb
) == -1))
429 ilog(L_MAIN
, "Error writing %u to pid file %s (%s)",
430 pid
, filename
, strerror(errno
));
437 ilog(L_MAIN
, "Error opening pid file %s", filename
);
444 * inputs - filename+path of pid file
446 * side effects - reads pid from pidfile and checks if ircd is in process
447 * list. if it is, gracefully exits
451 check_pidfile(const char *filename
)
457 /* Don't do logging here, since we don't have log() initialised */
458 if((fb
= fopen(filename
, "r")))
460 if(fgets(buff
, 20, fb
) != NULL
)
462 pidfromfile
= atoi(buff
);
463 if(!kill(pidfromfile
, 0))
465 printf("ircd: daemon is already running\n");
478 * side effects - setups corefile to system limits.
484 #ifdef HAVE_SYS_RESOURCE_H
485 struct rlimit rlim
; /* resource limits */
487 /* Set corefilesize to maximum */
488 if(!getrlimit(RLIMIT_CORE
, &rlim
))
490 rlim
.rlim_cur
= rlim
.rlim_max
;
491 setrlimit(RLIMIT_CORE
, &rlim
);
496 struct ev_entry
*check_splitmode_ev
= NULL
;
499 seed_with_urandom(void)
504 fd
= open("/dev/urandom", O_RDONLY
);
507 if(read(fd
, &seed
, sizeof(seed
)) == sizeof(seed
))
518 seed_with_clock(void)
520 const struct timeval
*tv
;
522 tv
= rb_current_time_tv();
523 srand(tv
->tv_sec
^ (tv
->tv_usec
| (getpid() << 20)));
527 seed_random(void *unused
)
530 if(rb_get_random(&seed
, sizeof(seed
)) == -1)
532 if(!seed_with_urandom())
542 * Initializes the IRCd.
544 * Inputs - number of commandline args, args themselves
546 * Side Effects - this is where the ircd gets going right now
549 main(int argc
, char *argv
[])
553 /* Check to see if the user is running us as root, which is a nono */
556 fprintf(stderr
, "Don't run ircd as root!!!\n");
561 * Setup corefile size immediately after boot -kre
565 /* It ain't random, but it ought to be a little harder to guess */
566 srand(SystemTime
.tv_sec
^ (SystemTime
.tv_usec
| (getpid() << 20)));
567 memset(&me
, 0, sizeof(me
));
568 memset(&meLocalUser
, 0, sizeof(meLocalUser
));
569 me
.localClient
= &meLocalUser
;
571 /* Make sure all lists are zeroed */
572 memset(&unknown_list
, 0, sizeof(unknown_list
));
573 memset(&lclient_list
, 0, sizeof(lclient_list
));
574 memset(&serv_list
, 0, sizeof(serv_list
));
575 memset(&global_serv_list
, 0, sizeof(global_serv_list
));
576 memset(&local_oper_list
, 0, sizeof(local_oper_list
));
577 memset(&oper_list
, 0, sizeof(oper_list
));
579 rb_dlinkAddTail(&me
, &me
.node
, &global_client_list
);
581 memset(&Count
, 0, sizeof(Count
));
582 memset(&ServerInfo
, 0, sizeof(ServerInfo
));
583 memset(&AdminInfo
, 0, sizeof(AdminInfo
));
584 memset(&ServerStats
, 0, sizeof(struct ServerStatistics
));
586 /* Initialise the channel capability usage counts... */
587 init_chcap_usage_counts();
589 ConfigFileEntry
.dpath
= DPATH
;
590 ConfigFileEntry
.configfile
= CPATH
; /* Server configuration file */
591 ConfigFileEntry
.klinefile
= KPATH
; /* Server kline file */
592 ConfigFileEntry
.dlinefile
= DLPATH
; /* dline file */
593 ConfigFileEntry
.xlinefile
= XPATH
;
594 ConfigFileEntry
.resvfile
= RESVPATH
;
595 ConfigFileEntry
.connect_timeout
= 30; /* Default to 30 */
597 umask(077); /* better safe than sorry --SRB */
599 parseargs(&argc
, &argv
, myopts
);
603 printf("ircd: version %s(%s)\n", ircd_version
, serno
);
607 if(chdir(ConfigFileEntry
.dpath
))
609 fprintf(stderr
, "Unable to chdir to %s: %s\n", ConfigFileEntry
.dpath
, strerror(errno
));
616 server_state_foreground
= 1;
620 server_state_foreground
= 1;
622 /* Make sure fd 0, 1 and 2 are in use -- jilles */
625 fd
= open("/dev/null", O_RDWR
);
626 } while (fd
< 2 && fd
!= -1);
632 /* Check if there is pidfile and daemon already running */
635 check_pidfile(pidFileName
);
637 if(!server_state_foreground
)
639 inotice("starting %s ...", ircd_version
);
642 /* Init the event subsystem */
644 rb_lib_init(ircd_log_cb
, ircd_restart_cb
, ircd_die_cb
, !server_state_foreground
, maxconnections
, DNODE_HEAP_SIZE
, FD_HEAP_SIZE
);
645 rb_linebuf_init(LINEBUF_HEAP_SIZE
);
652 clear_scache_hash_table(); /* server cache name table */
666 #ifndef STATIC_MODULES
667 load_core_modules(1);
669 init_auth(); /* Initialise the auth code */
670 init_resolver(); /* Needs to be setup before the io loop */
673 fprintf(stderr
, "\nBeginning config test\n");
674 read_conf_files(YES
); /* cold start init conf files */
676 #ifndef STATIC_MODULES
678 mod_add_path(MODULE_DIR
);
679 mod_add_path(MODULE_DIR
"/autoload");
684 initialize_server_capabs(); /* Set up default_server_capabs */
685 initialize_global_set_options();
687 if(ServerInfo
.name
== NULL
)
689 ierror("no server name specified in serverinfo block.");
692 rb_strlcpy(me
.name
, ServerInfo
.name
, sizeof(me
.name
));
694 if(ServerInfo
.sid
[0] == '\0')
696 ierror("no server sid specified in serverinfo block.");
699 strcpy(me
.id
, ServerInfo
.sid
);
702 /* serverinfo{} description must exist. If not, error out. */
703 if(ServerInfo
.description
== NULL
)
705 ierror("no server description specified in serverinfo block.");
708 rb_strlcpy(me
.info
, ServerInfo
.description
, sizeof(me
.info
));
710 if(ServerInfo
.ssl_cert
!= NULL
&& ServerInfo
.ssl_private_key
!= NULL
)
712 /* just do the rb_setup_ssl_server to validate the config */
713 if(!rb_setup_ssl_server(ServerInfo
.ssl_cert
, ServerInfo
.ssl_private_key
, ServerInfo
.ssl_dh_params
))
715 ilog(L_MAIN
, "WARNING: Unable to setup SSL.");
724 fprintf(stderr
, "\nConfig testing complete.\n");
726 return 0; /* Why? We want the launcher to exit out. */
733 startup_time
= rb_current_time();
734 add_to_client_hash(me
.name
, &me
);
735 add_to_id_hash(me
.id
, &me
);
736 me
.serv
->nameinfo
= scache_connect(me
.name
, me
.info
, 0);
738 rb_dlinkAddAlloc(&me
, &global_serv_list
);
740 construct_umodebuf();
741 construct_noparam_modes();
744 write_pidfile(pidFileName
);
748 ilog(L_MAIN
, "Server Ready");
750 /* We want try_connections to be called as soon as possible now! -- adrian */
751 /* No, 'cause after a restart it would cause all sorts of nick collides */
752 /* um. by waiting even longer, that just means we have even *more*
753 * nick collisions. what a stupid idea. set an event for the IO loop --fl
755 rb_event_addish("try_connections", try_connections
, NULL
, STARTUP_CONNECTIONS_TIME
);
756 rb_event_addonce("try_connections_startup", try_connections
, NULL
, 0);
757 rb_event_add("check_rehash", check_rehash
, NULL
, 1);
758 rb_event_addish("reseed_srand", seed_random
, NULL
, 300); /* reseed every 10 minutes */
761 check_splitmode_ev
= rb_event_add("check_splitmode", check_splitmode
, NULL
, 2);
763 print_startup(getpid());