2 * charybdis: 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) 2002-2008 ircd-ratbox development team
8 * Copyright (C) 2005-2013 charybdis development team
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.
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.
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
28 #include "ratbox_lib.h"
39 #include "ircd_signal.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 #include "privilege.h"
72 /* /quote set variables */
73 struct SetOptions GlobalSetOptions
;
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
;
83 struct ServerStatistics ServerStats
;
86 struct Client me
; /* That's me */
87 struct LocalUser meLocalUser
; /* That's also part of me */
89 rb_dlink_list global_client_list
;
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 */
99 const char *logFileName
= LPATH
;
100 const char *pidFileName
= PPATH
;
104 int dorehashbans
= 0;
106 int kline_queued
= 0;
107 int server_state_foreground
= 0;
108 int opers_see_all_users
= 0;
112 int testing_conf
= 0;
115 int default_server_capabs
;
124 ircd_shutdown(const char *reason
)
126 struct Client
*target_p
;
129 RB_DLINK_FOREACH(ptr
, lclient_list
.head
)
131 target_p
= ptr
->data
;
133 sendto_one(target_p
, ":%s NOTICE %s :Server Terminating. %s",
134 me
.name
, target_p
->name
, reason
);
137 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
139 target_p
= ptr
->data
;
141 sendto_one(target_p
, ":%s ERROR :Terminated by %s",
145 ilog(L_MAIN
, "Server Terminating. %s", reason
);
153 * print_startup - print startup information
156 print_startup(int pid
)
161 fd
= open("/dev/null", O_RDWR
);
163 perror("open /dev/null");
171 inotice("now running in %s mode from %s as pid %d ...",
172 !server_state_foreground
? "background" : "foreground",
173 ConfigFileEntry
.dpath
, pid
);
175 /* let the parent process know the initialization was successful
177 if (!server_state_foreground
)
179 if (dup2(1, 0) == -1)
181 if (dup2(1, 2) == -1)
188 * inputs - boot_daemon flag
190 * side effects - if boot_daemon flag is not set, don't daemonize
195 #if defined(RLIMIT_NOFILE) && defined(HAVE_SYS_RESOURCE_H)
198 if(!getrlimit(RLIMIT_NOFILE
, &limit
))
200 maxconnections
= limit
.rlim_cur
;
201 if(maxconnections
<= MAX_BUFFER
)
203 fprintf(stderr
, "ERROR: Shell FD limits are too low.\n");
204 fprintf(stderr
, "ERROR: charybdis reserves %d FDs, shell limits must be above this\n", MAX_BUFFER
);
209 #endif /* RLIMIT_FD_MAX */
210 maxconnections
= MAXCONNECTIONS
;
227 if((pid
= fork()) < 0)
235 /* Wait for initialization to finish, successfully or
236 * unsuccessfully. Until this point the child may still
237 * write to stdout/stderr.
239 if (read(pip
[0], &c
, 1) > 0)
254 static int printVersion
= 0;
256 struct lgetopt myopts
[] = {
257 {"configfile", &ConfigFileEntry
.configfile
,
258 STRING
, "File to use for ircd.conf"},
259 {"logfile", &logFileName
,
260 STRING
, "File to use for ircd.log"},
261 {"pidfile", &pidFileName
,
262 STRING
, "File to use for process ID"},
263 {"foreground", &server_state_foreground
,
264 YESNO
, "Run in foreground (don't detach)"},
265 {"version", &printVersion
,
266 YESNO
, "Print version and exit"},
267 {"conftest", &testing_conf
,
268 YESNO
, "Test the configuration files and exit"},
269 {"help", NULL
, USAGE
, "Print this text"},
270 {NULL
, NULL
, STRING
, NULL
},
274 check_rehash(void *unused
)
277 * Check to see whether we have to rehash the configuration ..
293 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
294 "Got signal SIGUSR1, reloading ircd motd file");
301 * initalialize_global_set_options
305 * side effects - This sets all global set options needed
308 initialize_global_set_options(void)
310 memset(&GlobalSetOptions
, 0, sizeof(GlobalSetOptions
));
311 /* memset( &ConfigFileEntry, 0, sizeof(ConfigFileEntry)); */
313 GlobalSetOptions
.maxclients
= ServerInfo
.default_max_clients
;
315 if(GlobalSetOptions
.maxclients
> (maxconnections
- MAX_BUFFER
) || (GlobalSetOptions
.maxclients
<= 0))
316 GlobalSetOptions
.maxclients
= maxconnections
- MAX_BUFFER
;
318 GlobalSetOptions
.autoconn
= 1;
320 GlobalSetOptions
.spam_time
= MIN_JOIN_LEAVE_TIME
;
321 GlobalSetOptions
.spam_num
= MAX_JOIN_LEAVE_COUNT
;
323 GlobalSetOptions
.floodcount
= ConfigFileEntry
.default_floodcount
;
325 split_servers
= ConfigChannel
.default_split_server_count
;
326 split_users
= ConfigChannel
.default_split_user_count
;
328 if(split_users
&& split_servers
329 && (ConfigChannel
.no_create_on_split
|| ConfigChannel
.no_join_on_split
))
335 GlobalSetOptions
.ident_timeout
= ConfigFileEntry
.default_ident_timeout
;
337 rb_strlcpy(GlobalSetOptions
.operstring
,
338 ConfigFileEntry
.default_operstring
,
339 sizeof(GlobalSetOptions
.operstring
));
340 rb_strlcpy(GlobalSetOptions
.adminstring
,
341 ConfigFileEntry
.default_adminstring
,
342 sizeof(GlobalSetOptions
.adminstring
));
344 /* memset( &ConfigChannel, 0, sizeof(ConfigChannel)); */
346 /* End of global set options */
351 * initialize_server_capabs
357 initialize_server_capabs(void)
359 default_server_capabs
&= ~CAP_ZIP
;
366 * inputs - filename+path of pid file
368 * side effects - write the pid of the ircd to filename
371 write_pidfile(const char *filename
)
375 if((fb
= fopen(filename
, "w")))
377 unsigned int pid
= (unsigned int) getpid();
379 rb_snprintf(buff
, sizeof(buff
), "%u\n", pid
);
380 if((fputs(buff
, fb
) == -1))
382 ilog(L_MAIN
, "Error writing %u to pid file %s (%s)",
383 pid
, filename
, strerror(errno
));
390 ilog(L_MAIN
, "Error opening pid file %s", filename
);
397 * inputs - filename+path of pid file
399 * side effects - reads pid from pidfile and checks if ircd is in process
400 * list. if it is, gracefully exits
404 check_pidfile(const char *filename
)
410 /* Don't do logging here, since we don't have log() initialised */
411 if((fb
= fopen(filename
, "r")))
413 if(fgets(buff
, 20, fb
) != NULL
)
415 pidfromfile
= atoi(buff
);
416 if(!kill(pidfromfile
, 0))
418 printf("ircd: daemon is already running\n");
431 * side effects - setups corefile to system limits.
437 #ifdef HAVE_SYS_RESOURCE_H
438 struct rlimit rlim
; /* resource limits */
440 /* Set corefilesize to maximum */
441 if(!getrlimit(RLIMIT_CORE
, &rlim
))
443 rlim
.rlim_cur
= rlim
.rlim_max
;
444 setrlimit(RLIMIT_CORE
, &rlim
);
450 ircd_log_cb(const char *str
)
452 ilog(L_MAIN
, "libratbox reports: %s", str
);
456 ircd_restart_cb(const char *str
)
458 inotice("libratbox has called the restart callback: %s", str
);
463 * Why EXIT_FAILURE here?
464 * Because if ircd_die_cb() is called it's because of a fatal
465 * error inside libcharybdis, and we don't know how to handle the
466 * exception, so it is logical to return a FAILURE exit code here.
470 ircd_die_cb(const char *str
)
474 /* Try to get the message out to currently logged in operators. */
475 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
, "libratbox has called the die callback..aborting: %s", str
);
476 inotice("libratbox has called the die callback..aborting: %s", str
);
479 inotice("libratbox has called the die callback..aborting");
485 struct ev_entry
*check_splitmode_ev
= NULL
;
488 seed_with_urandom(void)
493 fd
= open("/dev/urandom", O_RDONLY
);
496 if(read(fd
, &seed
, sizeof(seed
)) == sizeof(seed
))
508 seed_with_clock(void)
510 const struct timeval
*tv
;
512 tv
= rb_current_time_tv();
513 srand(tv
->tv_sec
^ (tv
->tv_usec
| (getpid() << 20)));
517 seed_random(void *unused
)
520 if(rb_get_random(&seed
, sizeof(seed
)) == -1)
522 if(!seed_with_urandom())
532 * Initializes the IRCd.
534 * Inputs - number of commandline args, args themselves
536 * Side Effects - this is where the ircd gets going right now
539 charybdis_main(int argc
, char *argv
[])
543 /* Check to see if the user is running us as root, which is a nono */
546 fprintf(stderr
, "Don't run ircd as root!!!\n");
552 ConfigFileEntry
.dpath
= DPATH
;
553 ConfigFileEntry
.configfile
= CPATH
; /* Server configuration file */
554 ConfigFileEntry
.connect_timeout
= 30; /* Default to 30 */
556 umask(077); /* better safe than sorry --SRB */
559 parseargs(&argc
, &argv
, myopts
);
561 if(chdir(ConfigFileEntry
.dpath
))
563 fprintf(stderr
, "Unable to chdir to %s: %s\n", ConfigFileEntry
.dpath
, strerror(errno
));
570 * Setup corefile size immediately after boot -kre
574 memset(&me
, 0, sizeof(me
));
575 memset(&meLocalUser
, 0, sizeof(meLocalUser
));
576 me
.localClient
= &meLocalUser
;
578 /* Make sure all lists are zeroed */
579 memset(&unknown_list
, 0, sizeof(unknown_list
));
580 memset(&lclient_list
, 0, sizeof(lclient_list
));
581 memset(&serv_list
, 0, sizeof(serv_list
));
582 memset(&global_serv_list
, 0, sizeof(global_serv_list
));
583 memset(&local_oper_list
, 0, sizeof(local_oper_list
));
584 memset(&oper_list
, 0, sizeof(oper_list
));
586 rb_dlinkAddTail(&me
, &me
.node
, &global_client_list
);
588 memset(&Count
, 0, sizeof(Count
));
589 memset(&ServerInfo
, 0, sizeof(ServerInfo
));
590 memset(&AdminInfo
, 0, sizeof(AdminInfo
));
591 memset(&ServerStats
, 0, sizeof(struct ServerStatistics
));
595 printf("ircd: version %s(%s)\n", ircd_version
, serno
);
596 #ifdef CUSTOM_BRANDING
597 printf("ircd: based on %s-%s\n", PACKAGE_NAME
, PACKAGE_VERSION
);
599 printf("ircd: %s\n", rb_lib_version());
606 server_state_foreground
= 1;
608 /* Make sure fd 0, 1 and 2 are in use -- jilles */
611 fd
= open("/dev/null", O_RDWR
);
612 } while (fd
< 2 && fd
!= -1);
618 /* Check if there is pidfile and daemon already running */
621 check_pidfile(pidFileName
);
623 if(!server_state_foreground
)
625 inotice("starting %s ...", ircd_version
);
626 inotice("%s", rb_lib_version());
629 /* Init the event subsystem */
630 rb_lib_init(ircd_log_cb
, ircd_restart_cb
, ircd_die_cb
, !server_state_foreground
, maxconnections
, DNODE_HEAP_SIZE
, FD_HEAP_SIZE
);
631 rb_linebuf_init(LINEBUF_HEAP_SIZE
);
633 rb_init_prng(NULL
, RB_PRNG_DEFAULT
);
637 init_builtin_capabs();
638 default_server_capabs
= CAP_MASK
;
645 clear_scache_hash_table(); /* server cache name table */
657 construct_cflags_strings();
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 */
665 privilegeset_set_new("default", "", 0);
668 fprintf(stderr
, "\nBeginning config test\n");
669 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");
683 initialize_server_capabs(); /* Set up default_server_capabs */
684 initialize_global_set_options();
686 if(ServerInfo
.name
== NULL
)
688 ierror("no server name specified in serverinfo block.");
691 rb_strlcpy(me
.name
, ServerInfo
.name
, sizeof(me
.name
));
693 if(ServerInfo
.sid
[0] == '\0')
695 ierror("no server sid specified in serverinfo block.");
698 strcpy(me
.id
, ServerInfo
.sid
);
701 /* serverinfo{} description must exist. If not, error out. */
702 if(ServerInfo
.description
== NULL
)
704 ierror("no server description specified in serverinfo block.");
707 rb_strlcpy(me
.info
, ServerInfo
.description
, sizeof(me
.info
));
709 if(ServerInfo
.ssl_cert
!= NULL
&& ServerInfo
.ssl_private_key
!= NULL
)
711 /* just do the rb_setup_ssl_server to validate the config */
712 if(!rb_setup_ssl_server(ServerInfo
.ssl_cert
, ServerInfo
.ssl_private_key
, ServerInfo
.ssl_dh_params
, ServerInfo
.ssl_cipher_list
))
714 ilog(L_MAIN
, "WARNING: Unable to setup SSL.");
723 fprintf(stderr
, "\nConfig testing complete.\n");
725 return 0; /* Why? We want the launcher to exit out. */
732 startup_time
= rb_current_time();
733 add_to_client_hash(me
.name
, &me
);
734 add_to_id_hash(me
.id
, &me
);
735 me
.serv
->nameinfo
= scache_connect(me
.name
, me
.info
, 0);
737 rb_dlinkAddAlloc(&me
, &global_serv_list
);
739 construct_umodebuf();
742 write_pidfile(pidFileName
);
746 ilog(L_MAIN
, "Server Ready");
748 /* We want try_connections to be called as soon as possible now! -- adrian */
749 /* No, 'cause after a restart it would cause all sorts of nick collides */
750 /* um. by waiting even longer, that just means we have even *more*
751 * nick collisions. what a stupid idea. set an event for the IO loop --fl
753 rb_event_addish("try_connections", try_connections
, NULL
, STARTUP_CONNECTIONS_TIME
);
754 rb_event_addonce("try_connections_startup", try_connections
, NULL
, 2);
755 rb_event_add("check_rehash", check_rehash
, NULL
, 3);
756 rb_event_addish("reseed_srand", seed_random
, NULL
, 300); /* reseed every 10 minutes */
759 check_splitmode_ev
= rb_event_add("check_splitmode", check_splitmode
, NULL
, 5);
761 print_startup(getpid());