633 lines
14 KiB
C
633 lines
14 KiB
C
/*
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* ircd-ratbox: A slightly useful ircd.
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* ircd.c: Starts up and runs the ircd.
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*
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* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2005 ircd-ratbox development team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*
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* $Id: ircd.c 3380 2007-04-03 22:25:11Z jilles $
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*/
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#include "stdinc.h"
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#include "setup.h"
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#include "config.h"
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#include "ircd.h"
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#include "channel.h"
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#include "class.h"
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#include "client.h"
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#include "common.h"
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#include "hash.h"
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#include "irc_string.h"
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#include "ircd_signal.h"
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#include "sprintf_irc.h"
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#include "s_gline.h"
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#include "msg.h" /* msgtab */
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#include "hostmask.h"
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#include "numeric.h"
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#include "parse.h"
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#include "res.h"
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#include "restart.h"
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#include "s_auth.h"
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#include "s_conf.h"
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#include "logger.h"
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#include "s_serv.h" /* try_connections */
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#include "s_user.h"
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#include "s_stats.h"
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#include "scache.h"
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#include "send.h"
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#include "supported.h"
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#include "whowas.h"
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#include "modules.h"
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#include "hook.h"
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#include "ircd_getopt.h"
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#include "newconf.h"
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#include "reject.h"
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#include "s_conf.h"
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#include "s_newconf.h"
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#include "cache.h"
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#include "monitor.h"
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#include "patchlevel.h"
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#include "serno.h"
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#include "ratbox_lib.h"
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/*
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* Try and find the correct name to use with getrlimit() for setting the max.
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* number of files allowed to be open by this process.
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*/
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int _charybdis_data_version = CHARYBDIS_DV;
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extern int ServerRunning;
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extern struct LocalUser meLocalUser;
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extern char **myargv;
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int maxconnections; /* XXX */
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/*
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* print_startup - print startup information
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*/
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static void
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print_startup(int pid)
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{
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inotice("now running in %s mode from %s as pid %d ...",
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!server_state_foreground ? "background" : "foreground",
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ConfigFileEntry.dpath, pid);
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/* let the parent process know the initialization was successful
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* -- jilles */
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if (!server_state_foreground)
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write(0, ".", 1);
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fclose(stdin);
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fclose(stdout);
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fclose(stderr);
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open("/dev/null", O_RDWR);
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dup2(0, 1);
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dup2(0, 2);
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}
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static void
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ircd_log_cb(const char *str)
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{
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ilog(L_MAIN, "%s", str);
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}
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static void
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ircd_restart_cb(const char *str)
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{
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restart(str);
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}
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/*
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* Why EXIT_FAILURE here?
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* Because if ircd_die_cb() is called it's because of a fatal
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* error inside libcharybdis, and we don't know how to handle the
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* exception, so it is logical to return a FAILURE exit code here.
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* --nenolod
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*/
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static void
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ircd_die_cb(const char *str)
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{
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/* Try to get the message out to currently logged in operators. */
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sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "Server panic! %s", str);
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inotice("server panic: %s", str);
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unlink(pidFileName);
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exit(EXIT_FAILURE);
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}
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/*
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* init_sys
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*
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* inputs - boot_daemon flag
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* output - none
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* side effects - if boot_daemon flag is not set, don't daemonize
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*/
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static void
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init_sys(void)
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{
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#if defined(RLIMIT_NOFILE) && defined(HAVE_SYS_RESOURCE_H)
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struct rlimit limit;
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if(!getrlimit(RLIMIT_NOFILE, &limit))
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{
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limit.rlim_cur = limit.rlim_max; /* make soft limit the max */
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if(setrlimit(RLIMIT_NOFILE, &limit) == -1)
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{
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fprintf(stderr, "error setting max fd's to %ld\n", (long) limit.rlim_cur);
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exit(EXIT_FAILURE);
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}
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}
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maxconnections = limit.rlim_cur;
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#endif /* RLIMIT_NOFILE */
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}
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static int
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make_daemon(void)
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{
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int pid;
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int pip[2];
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char c;
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if (pipe(pip) < 0)
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{
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perror("pipe");
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exit(EXIT_FAILURE);
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}
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dup2(pip[1], 0);
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close(pip[1]);
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if((pid = fork()) < 0)
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{
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perror("fork");
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exit(EXIT_FAILURE);
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}
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else if(pid > 0)
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{
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close(0);
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/* Wait for initialization to finish, successfully or
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* unsuccessfully. Until this point the child may still
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* write to stdout/stderr.
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* -- jilles */
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if (read(pip[0], &c, 1) > 0)
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exit(EXIT_SUCCESS);
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else
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exit(EXIT_FAILURE);
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}
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close(pip[0]);
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setsid();
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/* fclose(stdin);
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fclose(stdout);
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fclose(stderr); */
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return 0;
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}
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static int printVersion = 0;
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struct lgetopt myopts[] = {
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{"dlinefile", &ConfigFileEntry.dlinefile,
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STRING, "File to use for dlines.conf"},
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{"configfile", &ConfigFileEntry.configfile,
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STRING, "File to use for ircd.conf"},
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{"klinefile", &ConfigFileEntry.klinefile,
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STRING, "File to use for kline.conf"},
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{"xlinefile", &ConfigFileEntry.xlinefile,
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STRING, "File to use for xline.conf"},
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{"resvfile", &ConfigFileEntry.resvfile,
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STRING, "File to use for resv.conf"},
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{"logfile", &logFileName,
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STRING, "File to use for ircd.log"},
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{"pidfile", &pidFileName,
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STRING, "File to use for process ID"},
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{"foreground", &server_state_foreground,
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YESNO, "Run in foreground (don't detach)"},
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{"version", &printVersion,
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YESNO, "Print version and exit"},
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{"conftest", &testing_conf,
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YESNO, "Test the configuration files and exit"},
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{"help", NULL, USAGE, "Print this text"},
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{NULL, NULL, STRING, NULL},
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};
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static void
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check_rehash(void *unused)
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{
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/*
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* Check to see whether we have to rehash the configuration ..
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*/
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if(dorehash)
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{
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rehash(1);
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dorehash = 0;
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}
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if(dorehashbans)
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{
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rehash_bans(1);
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dorehashbans = 0;
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}
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if(doremotd)
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{
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sendto_realops_snomask(SNO_GENERAL, L_ALL,
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"Got signal SIGUSR1, reloading ircd motd file");
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free_cachefile(user_motd);
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user_motd = cache_file(MPATH, "ircd.motd", 0);
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doremotd = 0;
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}
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}
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/*
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* initalialize_global_set_options
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*
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* inputs - none
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* output - none
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* side effects - This sets all global set options needed
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*/
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static void
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initialize_global_set_options(void)
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{
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memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));
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/* memset( &ConfigFileEntry, 0, sizeof(ConfigFileEntry)); */
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GlobalSetOptions.maxclients = ServerInfo.max_clients;
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GlobalSetOptions.autoconn = 1;
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GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
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GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
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if(ConfigFileEntry.default_floodcount)
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GlobalSetOptions.floodcount = ConfigFileEntry.default_floodcount;
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else
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GlobalSetOptions.floodcount = 10;
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split_servers = ConfigChannel.default_split_server_count;
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split_users = ConfigChannel.default_split_user_count;
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if(split_users && split_servers
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&& (ConfigChannel.no_create_on_split || ConfigChannel.no_join_on_split))
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{
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splitmode = 1;
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splitchecking = 1;
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}
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GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
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strlcpy(GlobalSetOptions.operstring,
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ConfigFileEntry.default_operstring,
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sizeof(GlobalSetOptions.operstring));
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strlcpy(GlobalSetOptions.adminstring,
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ConfigFileEntry.default_adminstring,
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sizeof(GlobalSetOptions.adminstring));
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/* memset( &ConfigChannel, 0, sizeof(ConfigChannel)); */
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/* End of global set options */
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}
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/*
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* initialize_server_capabs
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*
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* inputs - none
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* output - none
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*/
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static void
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initialize_server_capabs(void)
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{
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default_server_capabs &= ~CAP_ZIP;
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}
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/*
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* write_pidfile
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*
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* inputs - filename+path of pid file
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* output - none
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* side effects - write the pid of the ircd to filename
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*/
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static void
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write_pidfile(const char *filename)
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{
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FILE *fb;
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char buff[32];
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if((fb = fopen(filename, "w")))
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{
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unsigned int pid = (unsigned int) getpid();
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rb_snprintf(buff, sizeof(buff), "%u\n", pid);
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if((fputs(buff, fb) == -1))
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{
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ilog(L_MAIN, "Error writing %u to pid file %s (%s)",
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pid, filename, strerror(errno));
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}
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fclose(fb);
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return;
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}
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else
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{
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ilog(L_MAIN, "Error opening pid file %s", filename);
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}
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}
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/*
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* check_pidfile
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*
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* inputs - filename+path of pid file
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* output - none
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* side effects - reads pid from pidfile and checks if ircd is in process
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* list. if it is, gracefully exits
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* -kre
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*/
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static void
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check_pidfile(const char *filename)
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{
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FILE *fb;
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char buff[32];
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pid_t pidfromfile;
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/* Don't do logging here, since we don't have log() initialised */
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if((fb = fopen(filename, "r")))
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{
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if(fgets(buff, 20, fb) != NULL)
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{
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pidfromfile = atoi(buff);
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if(!kill(pidfromfile, 0))
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{
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printf("ircd: daemon is already running\n");
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exit(-1);
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}
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}
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fclose(fb);
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}
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}
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/*
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* setup_corefile
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*
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* inputs - nothing
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* output - nothing
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* side effects - setups corefile to system limits.
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* -kre
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*/
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static void
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setup_corefile(void)
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{
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#ifdef HAVE_SYS_RESOURCE_H
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struct rlimit rlim; /* resource limits */
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/* Set corefilesize to maximum */
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if(!getrlimit(RLIMIT_CORE, &rlim))
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{
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rlim.rlim_cur = rlim.rlim_max;
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setrlimit(RLIMIT_CORE, &rlim);
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}
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#endif
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}
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struct ev_entry *check_splitmode_ev = NULL;
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/*
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* main
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*
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* Initializes the IRCd.
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*
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* Inputs - number of commandline args, args themselves
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* Outputs - none
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* Side Effects - this is where the ircd gets going right now
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*/
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int
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main(int argc, char *argv[])
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{
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int fd;
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/* Check to see if the user is running us as root, which is a nono */
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if(geteuid() == 0)
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{
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fprintf(stderr, "Don't run ircd as root!!!\n");
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return -1;
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}
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/*
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* Setup corefile size immediately after boot -kre
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*/
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setup_corefile();
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ServerRunning = 0;
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/* It ain't random, but it ought to be a little harder to guess */
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srand(SystemTime.tv_sec ^ (SystemTime.tv_usec | (getpid() << 20)));
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memset(&me, 0, sizeof(me));
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memset(&meLocalUser, 0, sizeof(meLocalUser));
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me.localClient = &meLocalUser;
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/* Make sure all lists are zeroed */
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memset(&unknown_list, 0, sizeof(unknown_list));
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memset(&lclient_list, 0, sizeof(lclient_list));
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memset(&serv_list, 0, sizeof(serv_list));
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memset(&global_serv_list, 0, sizeof(global_serv_list));
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memset(&local_oper_list, 0, sizeof(local_oper_list));
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memset(&oper_list, 0, sizeof(oper_list));
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rb_dlinkAddTail(&me, &me.node, &global_client_list);
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memset((void *) &Count, 0, sizeof(Count));
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memset((void *) &ServerInfo, 0, sizeof(ServerInfo));
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memset((void *) &AdminInfo, 0, sizeof(AdminInfo));
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/* Initialise the channel capability usage counts... */
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init_chcap_usage_counts();
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ConfigFileEntry.dpath = DPATH;
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ConfigFileEntry.configfile = CPATH; /* Server configuration file */
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ConfigFileEntry.klinefile = KPATH; /* Server kline file */
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ConfigFileEntry.dlinefile = DLPATH; /* dline file */
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ConfigFileEntry.xlinefile = XPATH;
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ConfigFileEntry.resvfile = RESVPATH;
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ConfigFileEntry.connect_timeout = 30; /* Default to 30 */
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myargv = argv;
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umask(077); /* better safe than sorry --SRB */
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parseargs(&argc, &argv, myopts);
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if(printVersion)
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{
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printf("ircd: version %s\n", ircd_version);
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exit(EXIT_SUCCESS);
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}
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if(chdir(ConfigFileEntry.dpath))
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{
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fprintf(stderr, "Unable to chdir to %s: %s\n", ConfigFileEntry.dpath, strerror(errno));
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exit(EXIT_FAILURE);
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}
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setup_signals();
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#ifdef __CYGWIN__
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server_state_foreground = 1;
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#endif
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if (testing_conf)
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server_state_foreground = 1;
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/* Make sure fd 0, 1 and 2 are in use -- jilles */
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do
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{
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fd = open("/dev/null", O_RDWR);
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} while (fd < 2 && fd != -1);
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if (fd > 2)
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close(fd);
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else if (fd == -1)
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exit(1);
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/* Check if there is pidfile and daemon already running */
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if(!testing_conf)
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{
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check_pidfile(pidFileName);
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if(!server_state_foreground)
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make_daemon();
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inotice("starting %s ...", ircd_version);
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}
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/* Init the event subsystem */
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init_sys();
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rb_lib_init(ircd_log_cb, ircd_restart_cb, ircd_die_cb, !server_state_foreground, maxconnections, DNODE_HEAP_SIZE, FD_HEAP_SIZE);
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rb_linebuf_init(LINEBUF_HEAP_SIZE);
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init_main_logfile();
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newconf_init();
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init_s_conf();
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init_s_newconf();
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init_hash();
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clear_scache_hash_table(); /* server cache name table */
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init_host_hash();
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clear_hash_parse();
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init_client();
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initUser();
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init_hook();
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init_channels();
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initclass();
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initwhowas();
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init_stats();
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init_reject();
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init_cache();
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init_monitor();
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init_isupport();
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load_all_modules(1);
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#ifndef STATIC_MODULES
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load_core_modules(1);
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#endif
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init_auth(); /* Initialise the auth code */
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init_resolver(); /* Needs to be setup before the io loop */
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if (testing_conf)
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fprintf(stderr, "\nBeginning config test\n");
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read_conf_files(YES); /* cold start init conf files */
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rehash_bans(0);
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#ifndef STATIC_MODULES
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mod_add_path(MODULE_DIR);
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mod_add_path(MODULE_DIR "/autoload");
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#endif
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initialize_server_capabs(); /* Set up default_server_capabs */
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initialize_global_set_options();
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if(ServerInfo.name == NULL)
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{
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ierror("no server name specified in serverinfo block.");
|
|
return -1;
|
|
}
|
|
strlcpy(me.name, ServerInfo.name, sizeof(me.name));
|
|
|
|
if(ServerInfo.sid[0] == '\0')
|
|
{
|
|
ierror("no server sid specified in serverinfo block.");
|
|
return -2;
|
|
}
|
|
strcpy(me.id, ServerInfo.sid);
|
|
init_uid();
|
|
|
|
/* serverinfo{} description must exist. If not, error out. */
|
|
if(ServerInfo.description == NULL)
|
|
{
|
|
ierror("no server description specified in serverinfo block.");
|
|
return -3;
|
|
}
|
|
strlcpy(me.info, ServerInfo.description, sizeof(me.info));
|
|
|
|
if (testing_conf)
|
|
{
|
|
fprintf(stderr, "\nConfig testing complete.\n");
|
|
fflush(stderr);
|
|
return 0; /* Why? We want the launcher to exit out. */
|
|
}
|
|
|
|
me.from = &me;
|
|
me.servptr = &me;
|
|
SetMe(&me);
|
|
make_server(&me);
|
|
startup_time = rb_current_time();
|
|
add_to_client_hash(me.name, &me);
|
|
add_to_id_hash(me.id, &me);
|
|
me.serv->nameinfo = scache_connect(me.name, me.info, 0);
|
|
|
|
rb_dlinkAddAlloc(&me, &global_serv_list);
|
|
|
|
construct_umodebuf();
|
|
|
|
check_class();
|
|
write_pidfile(pidFileName);
|
|
load_help();
|
|
open_logfiles();
|
|
|
|
ilog(L_MAIN, "Server Ready");
|
|
|
|
rb_event_addish("cleanup_glines", cleanup_glines, NULL, CLEANUP_GLINES_TIME);
|
|
|
|
/* We want try_connections to be called as soon as possible now! -- adrian */
|
|
/* No, 'cause after a restart it would cause all sorts of nick collides */
|
|
/* um. by waiting even longer, that just means we have even *more*
|
|
* nick collisions. what a stupid idea. set an event for the IO loop --fl
|
|
*/
|
|
rb_event_addish("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);
|
|
rb_event_addonce("try_connections_startup", try_connections, NULL, 0);
|
|
|
|
rb_event_addish("collect_zipstats", collect_zipstats, NULL, ZIPSTATS_TIME);
|
|
|
|
/* Setup the timeout check. I'll shift it later :) -- adrian */
|
|
rb_event_addish("rb_checktimeouts", rb_checktimeouts, NULL, 1);
|
|
|
|
rb_event_add("check_rehash", check_rehash, NULL, 1);
|
|
|
|
if(splitmode)
|
|
check_splitmode_ev = rb_event_add("check_splitmode", check_splitmode, NULL, 2);
|
|
|
|
ServerRunning = 1;
|
|
|
|
print_startup(getpid());
|
|
|
|
rb_lib_loop(250);
|
|
|
|
return 0;
|
|
}
|