562 lines
13 KiB
C
562 lines
13 KiB
C
/*
|
|
* ngIRCd -- The Next Generation IRC Daemon
|
|
* Copyright (c)2001-2003 by Alexander Barton (alex@barton.de)
|
|
*
|
|
* 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.
|
|
* Please read the file COPYING, README and AUTHORS for more information.
|
|
*
|
|
* Main program -- main()
|
|
*/
|
|
|
|
|
|
#include "portab.h"
|
|
|
|
static char UNUSED id[] = "$Id: ngircd.c,v 1.79 2003/12/27 13:09:24 alex Exp $";
|
|
|
|
#include "imp.h"
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <signal.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/wait.h>
|
|
#include <time.h>
|
|
#include <pwd.h>
|
|
#include <grp.h>
|
|
|
|
#include "resolve.h"
|
|
#include "conn.h"
|
|
#include "client.h"
|
|
#include "channel.h"
|
|
#include "conf.h"
|
|
#include "cvs-version.h"
|
|
#include "defines.h"
|
|
#include "lists.h"
|
|
#include "log.h"
|
|
#include "parse.h"
|
|
#include "irc.h"
|
|
|
|
#ifdef RENDEZVOUS
|
|
#include "rendezvous.h"
|
|
#endif
|
|
|
|
#include "exp.h"
|
|
#include "ngircd.h"
|
|
|
|
|
|
LOCAL VOID Initialize_Signal_Handler PARAMS(( VOID ));
|
|
LOCAL VOID Signal_Handler PARAMS(( INT Signal ));
|
|
|
|
LOCAL VOID Show_Version PARAMS(( VOID ));
|
|
LOCAL VOID Show_Help PARAMS(( VOID ));
|
|
|
|
|
|
GLOBAL int
|
|
main( int argc, const char *argv[] )
|
|
{
|
|
struct passwd *pwd;
|
|
struct group *grp;
|
|
BOOLEAN ok, configtest = FALSE;
|
|
LONG pid, n;
|
|
INT i;
|
|
|
|
umask( 0077 );
|
|
|
|
NGIRCd_SignalQuit = NGIRCd_SignalRestart = NGIRCd_SignalRehash = FALSE;
|
|
NGIRCd_NoDaemon = NGIRCd_Passive = FALSE;
|
|
#ifdef DEBUG
|
|
NGIRCd_Debug = FALSE;
|
|
#endif
|
|
#ifdef SNIFFER
|
|
NGIRCd_Sniffer = FALSE;
|
|
#endif
|
|
strlcpy( NGIRCd_ConfFile, SYSCONFDIR, sizeof( NGIRCd_ConfFile ));
|
|
strlcat( NGIRCd_ConfFile, CONFIG_FILE, sizeof( NGIRCd_ConfFile ));
|
|
|
|
/* Kommandozeile parsen */
|
|
for( i = 1; i < argc; i++ )
|
|
{
|
|
ok = FALSE;
|
|
if(( argv[i][0] == '-' ) && ( argv[i][1] == '-' ))
|
|
{
|
|
/* Lange Option */
|
|
|
|
if( strcmp( argv[i], "--config" ) == 0 )
|
|
{
|
|
if( i + 1 < argc )
|
|
{
|
|
/* Ok, there's an parameter left */
|
|
strlcpy( NGIRCd_ConfFile, argv[i + 1], sizeof( NGIRCd_ConfFile ));
|
|
|
|
/* next parameter */
|
|
i++; ok = TRUE;
|
|
}
|
|
}
|
|
if( strcmp( argv[i], "--configtest" ) == 0 )
|
|
{
|
|
configtest = TRUE;
|
|
ok = TRUE;
|
|
}
|
|
#ifdef DEBUG
|
|
if( strcmp( argv[i], "--debug" ) == 0 )
|
|
{
|
|
NGIRCd_Debug = TRUE;
|
|
ok = TRUE;
|
|
}
|
|
#endif
|
|
if( strcmp( argv[i], "--help" ) == 0 )
|
|
{
|
|
Show_Version( );
|
|
puts( "" ); Show_Help( ); puts( "" );
|
|
exit( 1 );
|
|
}
|
|
if( strcmp( argv[i], "--nodaemon" ) == 0 )
|
|
{
|
|
NGIRCd_NoDaemon = TRUE;
|
|
ok = TRUE;
|
|
}
|
|
if( strcmp( argv[i], "--passive" ) == 0 )
|
|
{
|
|
NGIRCd_Passive = TRUE;
|
|
ok = TRUE;
|
|
}
|
|
#ifdef SNIFFER
|
|
if( strcmp( argv[i], "--sniffer" ) == 0 )
|
|
{
|
|
NGIRCd_Sniffer = TRUE;
|
|
ok = TRUE;
|
|
}
|
|
#endif
|
|
if( strcmp( argv[i], "--version" ) == 0 )
|
|
{
|
|
Show_Version( );
|
|
exit( 1 );
|
|
}
|
|
}
|
|
else if(( argv[i][0] == '-' ) && ( argv[i][1] != '-' ))
|
|
{
|
|
/* Kurze Option */
|
|
|
|
for( n = 1; n < (LONG)strlen( argv[i] ); n++ )
|
|
{
|
|
ok = FALSE;
|
|
#ifdef DEBUG
|
|
if( argv[i][n] == 'd' )
|
|
{
|
|
NGIRCd_Debug = TRUE;
|
|
ok = TRUE;
|
|
}
|
|
#endif
|
|
if( argv[i][n] == 'f' )
|
|
{
|
|
if(( ! argv[i][n + 1] ) && ( i + 1 < argc ))
|
|
{
|
|
/* Ok, next character is a blank */
|
|
strlcpy( NGIRCd_ConfFile, argv[i + 1], sizeof( NGIRCd_ConfFile ));
|
|
|
|
/* go to the following parameter */
|
|
i++; n = (LONG)strlen( argv[i] );
|
|
ok = TRUE;
|
|
}
|
|
}
|
|
if( argv[i][n] == 'n' )
|
|
{
|
|
NGIRCd_NoDaemon = TRUE;
|
|
ok = TRUE;
|
|
}
|
|
if( argv[i][n] == 'p' )
|
|
{
|
|
NGIRCd_Passive = TRUE;
|
|
ok = TRUE;
|
|
}
|
|
#ifdef SNIFFER
|
|
if( argv[i][n] == 's' )
|
|
{
|
|
NGIRCd_Sniffer = TRUE;
|
|
ok = TRUE;
|
|
}
|
|
#endif
|
|
|
|
if( ! ok )
|
|
{
|
|
printf( "%s: invalid option \"-%c\"!\n", PACKAGE_NAME, argv[i][n] );
|
|
printf( "Try \"%s --help\" for more information.\n", PACKAGE_NAME );
|
|
exit( 1 );
|
|
}
|
|
}
|
|
|
|
}
|
|
if( ! ok )
|
|
{
|
|
printf( "%s: invalid option \"%s\"!\n", PACKAGE_NAME, argv[i] );
|
|
printf( "Try \"%s --help\" for more information.\n", PACKAGE_NAME );
|
|
exit( 1 );
|
|
}
|
|
}
|
|
|
|
/* Debug-Level (fuer IRC-Befehl "VERSION") ermitteln */
|
|
strcpy( NGIRCd_DebugLevel, "" );
|
|
#ifdef DEBUG
|
|
if( NGIRCd_Debug ) strcpy( NGIRCd_DebugLevel, "1" );
|
|
#endif
|
|
#ifdef SNIFFER
|
|
if( NGIRCd_Sniffer )
|
|
{
|
|
NGIRCd_Debug = TRUE;
|
|
strcpy( NGIRCd_DebugLevel, "2" );
|
|
}
|
|
#endif
|
|
|
|
/* Soll nur die Konfigurations ueberprueft und ausgegeben werden? */
|
|
if( configtest )
|
|
{
|
|
Show_Version( ); puts( "" );
|
|
exit( Conf_Test( ));
|
|
}
|
|
|
|
while( ! NGIRCd_SignalQuit )
|
|
{
|
|
/* In der Regel wird ein Sub-Prozess ge-fork()'t, der
|
|
* nicht mehr mit dem Terminal verbunden ist. Mit der
|
|
* Option "--nodaemon" kann dies (z.B. zum Debuggen)
|
|
* verhindert werden. */
|
|
if( ! NGIRCd_NoDaemon )
|
|
{
|
|
/* Daemon im Hintergrund erzeugen */
|
|
pid = (LONG)fork( );
|
|
if( pid > 0 )
|
|
{
|
|
/* "alter" Prozess */
|
|
exit( 0 );
|
|
}
|
|
if( pid < 0 )
|
|
{
|
|
/* Fehler */
|
|
printf( "%s: Can't fork: %s!\nFatal error, exiting now ...\n", PACKAGE_NAME, strerror( errno ));
|
|
exit( 1 );
|
|
}
|
|
|
|
/* Child-Prozess initialisieren */
|
|
(VOID)setsid( );
|
|
chdir( "/" );
|
|
}
|
|
|
|
/* Globale Variablen initialisieren */
|
|
NGIRCd_Start = time( NULL );
|
|
(VOID)strftime( NGIRCd_StartStr, 64, "%a %b %d %Y at %H:%M:%S (%Z)", localtime( &NGIRCd_Start ));
|
|
NGIRCd_SignalRehash = FALSE;
|
|
NGIRCd_SignalRestart = FALSE;
|
|
NGIRCd_SignalQuit = FALSE;
|
|
|
|
/* Module initialisieren */
|
|
Log_Init( );
|
|
Resolve_Init( );
|
|
Conf_Init( );
|
|
Lists_Init( );
|
|
Channel_Init( );
|
|
Client_Init( );
|
|
#ifdef RENDEZVOUS
|
|
Rendezvous_Init( );
|
|
#endif
|
|
Conn_Init( );
|
|
|
|
/* Wenn als root ausgefuehrt und eine andere UID
|
|
* konfiguriert ist, jetzt zu dieser wechseln */
|
|
if( getuid( ) == 0 )
|
|
{
|
|
if( Conf_GID != 0 )
|
|
{
|
|
/* Neue Group-ID setzen */
|
|
if( setgid( Conf_GID ) != 0 ) Log( LOG_ERR, "Can't change Group-ID to %u: %s", Conf_GID, strerror( errno ));
|
|
}
|
|
if( Conf_UID != 0 )
|
|
{
|
|
/* Neue User-ID setzen */
|
|
if( setuid( Conf_UID ) != 0 ) Log( LOG_ERR, "Can't change User-ID to %u: %s", Conf_UID, strerror( errno ));
|
|
}
|
|
}
|
|
|
|
/* User, Gruppe und Prozess-ID des Daemon ausgeben */
|
|
pwd = getpwuid( getuid( )); grp = getgrgid( getgid( ));
|
|
Log( LOG_INFO, "Running as user %s(%ld), group %s(%ld), with PID %ld.", pwd ? pwd->pw_name : "unknown", (LONG)getuid( ), grp ? grp->gr_name : "unknown", (LONG)getgid( ), (LONG)getpid( ));
|
|
|
|
/* stderr in "Error-File" umlenken */
|
|
Log_InitErrorfile( );
|
|
|
|
/* Signal-Handler initialisieren */
|
|
Initialize_Signal_Handler( );
|
|
|
|
/* Protokoll- und Server-Identifikation erzeugen. Die vom ngIRCd
|
|
* beim PASS-Befehl verwendete Syntax sowie die erweiterten Flags
|
|
* sind in doc/Protocol.txt beschrieben. */
|
|
#ifdef IRCPLUS
|
|
sprintf( NGIRCd_ProtoID, "%s%s %s|%s:%s", PROTOVER, PROTOIRCPLUS, PACKAGE_NAME, PACKAGE_VERSION, IRCPLUSFLAGS );
|
|
#ifdef ZLIB
|
|
strcat( NGIRCd_ProtoID, "Z" );
|
|
#endif
|
|
if( Conf_OperCanMode ) strcat( NGIRCd_ProtoID, "o" );
|
|
#else
|
|
sprintf( NGIRCd_ProtoID, "%s%s %s|%s", PROTOVER, PROTOIRC, PACKAGE_NAME, PACKAGE_VERSION );
|
|
#endif
|
|
strcat( NGIRCd_ProtoID, " P" );
|
|
#ifdef ZLIB
|
|
strcat( NGIRCd_ProtoID, "Z" );
|
|
#endif
|
|
Log( LOG_DEBUG, "Protocol and server ID is \"%s\".", NGIRCd_ProtoID );
|
|
|
|
/* Vordefinierte Channels anlegen */
|
|
Channel_InitPredefined( );
|
|
|
|
/* Listen-Ports initialisieren */
|
|
if( Conn_InitListeners( ) < 1 )
|
|
{
|
|
Log( LOG_ALERT, "Server isn't listening on a single port!" );
|
|
Log( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
|
|
exit( 1 );
|
|
}
|
|
|
|
/* Hauptschleife */
|
|
Conn_Handler( );
|
|
|
|
/* Alles abmelden */
|
|
Conn_Exit( );
|
|
#ifdef RENDEZVOUS
|
|
Rendezvous_Exit( );
|
|
#endif
|
|
Client_Exit( );
|
|
Channel_Exit( );
|
|
Lists_Exit( );
|
|
Log_Exit( );
|
|
}
|
|
|
|
return 0;
|
|
} /* main */
|
|
|
|
|
|
GLOBAL CHAR *
|
|
NGIRCd_Version( VOID )
|
|
{
|
|
STATIC CHAR version[126];
|
|
|
|
#ifdef CVSDATE
|
|
sprintf( version, "%s %s(%s)-%s", PACKAGE_NAME, PACKAGE_VERSION, CVSDATE, NGIRCd_VersionAddition( ));
|
|
#else
|
|
sprintf( version, "%s %s-%s", PACKAGE_NAME, PACKAGE_VERSION, NGIRCd_VersionAddition( ));
|
|
#endif
|
|
return version;
|
|
} /* NGIRCd_Version */
|
|
|
|
|
|
GLOBAL CHAR *
|
|
NGIRCd_VersionAddition( VOID )
|
|
{
|
|
STATIC CHAR txt[200];
|
|
|
|
strcpy( txt, "" );
|
|
|
|
#ifdef SYSLOG
|
|
if( txt[0] ) strcat( txt, "+" );
|
|
strcat( txt, "SYSLOG" );
|
|
#endif
|
|
#ifdef ZLIB
|
|
if( txt[0] ) strcat( txt, "+" );
|
|
strcat( txt, "ZLIB" );
|
|
#endif
|
|
#ifdef TCPWRAP
|
|
if( txt[0] ) strcat( txt, "+" );
|
|
strcat( txt, "TCPWRAP" );
|
|
#endif
|
|
#ifdef RENDEZVOUS
|
|
if( txt[0] ) strcat( txt, "+" );
|
|
strcat( txt, "RENDEZVOUS" );
|
|
#endif
|
|
#ifdef IDENTAUTH
|
|
if( txt[0] ) strcat( txt, "+" );
|
|
strcat( txt, "IDENT" );
|
|
#endif
|
|
#ifdef DEBUG
|
|
if( txt[0] ) strcat( txt, "+" );
|
|
strcat( txt, "DEBUG" );
|
|
#endif
|
|
#ifdef SNIFFER
|
|
if( txt[0] ) strcat( txt, "+" );
|
|
strcat( txt, "SNIFFER" );
|
|
#endif
|
|
#ifdef STRICT_RFC
|
|
if( txt[0] ) strcat( txt, "+" );
|
|
strcat( txt, "RFC" );
|
|
#endif
|
|
#ifdef IRCPLUS
|
|
if( txt[0] ) strcat( txt, "+" );
|
|
strcat( txt, "IRCPLUS" );
|
|
#endif
|
|
|
|
if( txt[0] ) strlcat( txt, "-", sizeof( txt ));
|
|
strlcat( txt, TARGET_CPU, sizeof( txt ));
|
|
strlcat( txt, "/", sizeof( txt ));
|
|
strlcat( txt, TARGET_VENDOR, sizeof( txt ));
|
|
strlcat( txt, "/", sizeof( txt ));
|
|
strlcat( txt, TARGET_OS, sizeof( txt ));
|
|
|
|
return txt;
|
|
} /* NGIRCd_VersionAddition */
|
|
|
|
|
|
GLOBAL VOID
|
|
NGIRCd_Rehash( VOID )
|
|
{
|
|
CHAR old_name[CLIENT_ID_LEN];
|
|
|
|
Log( LOG_NOTICE|LOG_snotice, "Re-reading configuration NOW!" );
|
|
NGIRCd_SignalRehash = FALSE;
|
|
|
|
/* Alle Listen-Sockets schliessen */
|
|
Conn_ExitListeners( );
|
|
|
|
/* Alten Server-Namen merken */
|
|
#ifdef DEBUG
|
|
assert( sizeof( old_name ) == sizeof( Conf_ServerName ));
|
|
#endif
|
|
strcpy( old_name, Conf_ServerName );
|
|
|
|
/* Konfiguration neu lesen ... */
|
|
Conf_Rehash( );
|
|
|
|
/* Alten Server-Namen wiederherstellen: dieser
|
|
* kann nicht zur Laufzeit geaendert werden ... */
|
|
if( strcmp( old_name, Conf_ServerName ) != 0 )
|
|
{
|
|
strcpy( Conf_ServerName, old_name );
|
|
Log( LOG_ERR, "Can't change \"ServerName\" on runtime! Ignored new name." );
|
|
}
|
|
|
|
/* neue pre-defined Channel anlegen: */
|
|
Channel_InitPredefined( );
|
|
|
|
/* Listen-Sockets neu anlegen: */
|
|
Conn_InitListeners( );
|
|
|
|
/* Sync configuration with established connections */
|
|
Conn_SyncServerStruct( );
|
|
|
|
Log( LOG_NOTICE|LOG_snotice, "Re-reading of configuration done." );
|
|
} /* NGIRCd_Rehash */
|
|
|
|
|
|
LOCAL VOID
|
|
Initialize_Signal_Handler( VOID )
|
|
{
|
|
/* Signal-Handler initialisieren: einige Signale
|
|
* werden ignoriert, andere speziell behandelt. */
|
|
|
|
#ifdef HAVE_SIGACTION
|
|
/* sigaction() ist vorhanden */
|
|
|
|
struct sigaction saction;
|
|
|
|
/* Signal-Struktur initialisieren */
|
|
memset( &saction, 0, sizeof( saction ));
|
|
saction.sa_handler = Signal_Handler;
|
|
#ifdef SA_RESTART
|
|
saction.sa_flags |= SA_RESTART;
|
|
#endif
|
|
#ifdef SA_NOCLDWAIT
|
|
saction.sa_flags |= SA_NOCLDWAIT;
|
|
#endif
|
|
|
|
/* Signal-Handler einhaengen */
|
|
sigaction( SIGINT, &saction, NULL );
|
|
sigaction( SIGQUIT, &saction, NULL );
|
|
sigaction( SIGTERM, &saction, NULL);
|
|
sigaction( SIGHUP, &saction, NULL);
|
|
sigaction( SIGCHLD, &saction, NULL);
|
|
|
|
/* einige Signale ignorieren */
|
|
saction.sa_handler = SIG_IGN;
|
|
sigaction( SIGPIPE, &saction, NULL );
|
|
#else
|
|
/* kein sigaction() vorhanden */
|
|
|
|
/* Signal-Handler einhaengen */
|
|
signal( SIGINT, Signal_Handler );
|
|
signal( SIGQUIT, Signal_Handler );
|
|
signal( SIGTERM, Signal_Handler );
|
|
signal( SIGHUP, Signal_Handler );
|
|
signal( SIGCHLD, Signal_Handler );
|
|
|
|
/* einige Signale ignorieren */
|
|
signal( SIGPIPE, SIG_IGN );
|
|
#endif
|
|
} /* Initialize_Signal_Handler */
|
|
|
|
|
|
LOCAL VOID
|
|
Signal_Handler( INT Signal )
|
|
{
|
|
/* Signal-Handler. Dieser wird aufgerufen, wenn eines der Signale eintrifft,
|
|
* fuer das wir uns registriert haben (vgl. Initialize_Signal_Handler). Die
|
|
* Nummer des eingetroffenen Signals wird der Funktion uebergeben. */
|
|
|
|
switch( Signal )
|
|
{
|
|
case SIGTERM:
|
|
case SIGINT:
|
|
case SIGQUIT:
|
|
/* wir soll(t)en uns wohl beenden ... */
|
|
NGIRCd_SignalQuit = TRUE;
|
|
break;
|
|
case SIGHUP:
|
|
/* Konfiguration neu einlesen: */
|
|
NGIRCd_SignalRehash = TRUE;
|
|
break;
|
|
case SIGCHLD:
|
|
/* Child-Prozess wurde beendet. Zombies vermeiden: */
|
|
while( waitpid( -1, NULL, WNOHANG ) > 0);
|
|
break;
|
|
#ifdef DEBUG
|
|
default:
|
|
/* unbekanntes bzw. unbehandeltes Signal */
|
|
Log( LOG_DEBUG, "Got signal %d! Ignored.", Signal );
|
|
#endif
|
|
}
|
|
} /* Signal_Handler */
|
|
|
|
|
|
LOCAL VOID
|
|
Show_Version( VOID )
|
|
{
|
|
puts( NGIRCd_Version( ));
|
|
puts( "Copyright (c)2001-2003 by Alexander Barton (<alex@barton.de>)." );
|
|
puts( "Homepage: <http://arthur.ath.cx/~alex/ngircd/>\n" );
|
|
puts( "This is free software; see the source for copying conditions. There is NO" );
|
|
puts( "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." );
|
|
} /* Show_Version */
|
|
|
|
|
|
LOCAL VOID
|
|
Show_Help( VOID )
|
|
{
|
|
#ifdef DEBUG
|
|
puts( " -d, --debug log extra debug messages" );
|
|
#endif
|
|
puts( " -f, --config <f> use file <f> as configuration file" );
|
|
puts( " -n, --nodaemon don't fork and don't detach from controlling terminal" );
|
|
puts( " -p, --passive disable automatic connections to other servers" );
|
|
#ifdef SNIFFER
|
|
puts( " -s, --sniffer enable network sniffer and display all IRC traffic" );
|
|
#endif
|
|
puts( " --configtest read, validate and display configuration; then exit" );
|
|
puts( " --version output version information and exit" );
|
|
puts( " --help display this help and exit" );
|
|
} /* Show_Help */
|
|
|
|
|
|
/* -eof- */
|