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/********************************************************************\
* BitlBee -- An IRC to other IM-networks gateway *
* *
* Copyright 2002-2004 Wilmer van der Gaast and others *
\********************************************************************/
/* Main file (Unix specific part) */
/*
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License with
the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
if not, write to the Free Software Foundation, Inc., 59 Temple Place,
Suite 330, Boston, MA 02111-1307 USA
*/
#include "bitlbee.h"
#include "commands.h"
#include "crypting.h"
#include "protocols/nogaim.h"
#include "help.h"
#include "ipc.h"
#include <signal.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <pwd.h>
global_t global; /* Against global namespace pollution */
static void sighandler( int signal );
int main( int argc, char *argv[], char **envp )
{
int i = 0;
char *old_cwd = NULL;
struct sigaction sig, old;
log_init();
CONF_FILE = g_strdup( CONF_FILE_DEF );
global.conf = conf_load( argc, argv );
if( global.conf == NULL )
return( 1 );
b_main_init();
nogaim_init();
srand( time( NULL ) ^ getpid() );
global.helpfile = g_strdup( HELP_FILE );
if( global.conf->runmode == RUNMODE_INETD )
{
i = bitlbee_inetd_init();
log_message( LOGLVL_INFO, "Bitlbee %s starting in inetd mode.", BITLBEE_VERSION );
}
else if( global.conf->runmode == RUNMODE_DAEMON )
{
i = bitlbee_daemon_init();
log_message( LOGLVL_INFO, "Bitlbee %s starting in daemon mode.", BITLBEE_VERSION );
}
else if( global.conf->runmode == RUNMODE_FORKDAEMON )
{
/* In case the operator requests a restart, we need this. */
old_cwd = g_malloc( 256 );
if( getcwd( old_cwd, 255 ) == NULL )
{
log_message( LOGLVL_WARNING, "Could not save current directory: %s", strerror( errno ) );
g_free( old_cwd );
old_cwd = NULL;
}
i = bitlbee_daemon_init();
log_message( LOGLVL_INFO, "Bitlbee %s starting in forking daemon mode.", BITLBEE_VERSION );
}
if( i != 0 )
return( i );
if( ( global.conf->user && *global.conf->user ) &&
( global.conf->runmode == RUNMODE_DAEMON ||
global.conf->runmode == RUNMODE_FORKDAEMON ) &&
( !getuid() || !geteuid() ) )
{
struct passwd *pw = NULL;
pw = getpwnam( global.conf->user );
if( pw )
{
setgid( pw->pw_gid );
setuid( pw->pw_uid );
}
}
global.storage = storage_init( global.conf->primary_storage, global.conf->migrate_storage );
if( global.storage == NULL )
{
log_message( LOGLVL_ERROR, "Unable to load storage backend '%s'", global.conf->primary_storage );
return( 1 );
}
/* Catch some signals to tell the user what's happening before quitting */
memset( &sig, 0, sizeof( sig ) );
sig.sa_handler = sighandler;
sigaction( SIGCHLD, &sig, &old );
sigaction( SIGPIPE, &sig, &old );
sig.sa_flags = SA_RESETHAND;
sigaction( SIGINT, &sig, &old );
sigaction( SIGILL, &sig, &old );
sigaction( SIGBUS, &sig, &old );
sigaction( SIGFPE, &sig, &old );
sigaction( SIGSEGV, &sig, &old );
sigaction( SIGTERM, &sig, &old );
sigaction( SIGQUIT, &sig, &old );
sigaction( SIGXCPU, &sig, &old );
if( !getuid() || !geteuid() )
log_message( LOGLVL_WARNING, "BitlBee is running with root privileges. Why?" );
if( help_init( &(global.help), global.helpfile ) == NULL )
log_message( LOGLVL_WARNING, "Error opening helpfile %s.", HELP_FILE );
b_main_run();
if( global.restart )
{
char *fn = ipc_master_save_state();
char **args;
int n, i;
chdir( old_cwd );
n = 0;
args = g_new0( char *, argc + 3 );
args[n++] = argv[0];
if( fn )
{
args[n++] = "-R";
args[n++] = fn;
}
for( i = 1; argv[i] && i < argc; i ++ )
{
if( strcmp( argv[i], "-R" ) == 0 )
i += 2;
args[n++] = argv[i];
}
close( global.listen_socket );
execve( args[0], args, envp );
}
return( 0 );
}
static void sighandler( int signal )
{
/* FIXME: Calling log_message() here is not a very good idea! */
if( signal == SIGTERM )
{
static int first = 1;
if( first )
{
/* We don't know what we were doing when this signal came in. It's not safe to touch
the user data now (not to mention writing them to disk), so add a timer. */
log_message( LOGLVL_ERROR, "SIGTERM received, cleaning up process." );
b_timeout_add( 1, (b_event_handler) bitlbee_shutdown, NULL );
first = 0;
}
else
{
/* Well, actually, for now we'll never need this part because this signal handler
will never be called more than once in a session for a non-SIGPIPE signal...
But just in case we decide to change that: */
log_message( LOGLVL_ERROR, "SIGTERM received twice, so long for a clean shutdown." );
raise( signal );
}
}
else if( signal == SIGCHLD )
{
pid_t pid;
int st;
while( ( pid = waitpid( 0, &st, WNOHANG ) ) > 0 )
{
if( WIFSIGNALED( st ) )
log_message( LOGLVL_INFO, "Client %d terminated normally. (status = %d)", pid, WEXITSTATUS( st ) );
else if( WIFEXITED( st ) )
log_message( LOGLVL_INFO, "Client %d killed by signal %d.", pid, WTERMSIG( st ) );
}
}
else if( signal != SIGPIPE )
{
log_message( LOGLVL_ERROR, "Fatal signal received: %d. That's probably a bug.", signal );
raise( signal );
}
}
double gettime()
{
struct timeval time[1];
gettimeofday( time, 0 );
return( (double) time->tv_sec + (double) time->tv_usec / 1000000 );
}
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