/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001 by Alexander Barton (alex@barton.de)
+ * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
*
* Dieses Programm ist freie Software. Sie koennen es unter den Bedingungen
* der GNU General Public License (GPL), wie von der Free Software Foundation
* herausgegeben, weitergeben und/oder modifizieren, entweder unter Version 2
* der Lizenz oder (wenn Sie es wuenschen) jeder spaeteren Version.
* Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
- * der an comBase beteiligten Autoren finden Sie in der Datei AUTHORS.
+ * der an ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
*
- * $Id: ngircd.c,v 1.8 2001/12/14 08:15:26 alex Exp $
+ * $Id: ngircd.c,v 1.54.2.2 2002/10/04 13:12:46 alex Exp $
*
* ngircd.c: Hier beginnt alles ;-)
- *
- * $Log: ngircd.c,v $
- * Revision 1.8 2001/12/14 08:15:26 alex
- * - neue Module (irc, client, channel) werden an- und abgemeldet.
- * - zweiter Listen-Socket wird zu Testzwecken konfiguriert.
- *
- * Revision 1.7 2001/12/13 01:31:46 alex
- * - Conn_Handler() wird nun mit einem Timeout aufgerufen.
- *
- * Revision 1.6 2001/12/12 23:30:42 alex
- * - Log-Meldungen an syslog angepasst.
- * - NGIRCd_Quit ist nun das Flag zum Beenden des ngircd.
- *
- * Revision 1.5 2001/12/12 17:21:21 alex
- * - mehr Unterfunktionen eingebaut, Modul besser strukturiert & dokumentiert.
- * - Anpassungen an neue Module.
- *
- * Revision 1.4 2001/12/12 01:58:53 alex
- * - Test auf socklen_t verbessert.
- *
- * Revision 1.3 2001/12/12 01:40:39 alex
- * - ein paar mehr Kommentare; Variablennamen verstaendlicher gemacht.
- * - fehlenden Header <arpa/inet.h> ergaenz.
- * - SIGINT und SIGQUIT werden nun ebenfalls behandelt.
- *
- * Revision 1.2 2001/12/11 22:04:21 alex
- * - Test auf stdint.h (HAVE_STDINT_H) hinzugefuegt.
- *
- * Revision 1.1.1.1 2001/12/11 21:53:04 alex
- * Imported sources to CVS.
*/
-#define PORTAB_CHECK_TYPES /* Prueffunktion einbinden, s.u. */
-
-
-#include <portab.h>
-#include "global.h"
-
-#include <imp.h>
+#include "portab.h"
+#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 "channel.h"
+#include "resolve.h"
+#include "conn.h"
#include "client.h"
+#include "channel.h"
#include "conf.h"
-#include "conn.h"
-#include "irc.h"
+#include "defines.h"
+#include "lists.h"
#include "log.h"
+#include "parse.h"
+#include "irc.h"
-#include <exp.h>
+#include "exp.h"
#include "ngircd.h"
-LOCAL VOID Initialize_Signal_Handler( VOID );
-LOCAL VOID Signal_Handler( INT Signal );
+LOCAL VOID Initialize_Signal_Handler PARAMS(( VOID ));
+LOCAL VOID Signal_Handler PARAMS(( INT Signal ));
+
+LOCAL VOID Initialize_Listen_Ports PARAMS(( VOID ));
+
+LOCAL VOID Show_Version PARAMS(( VOID ));
+LOCAL VOID Show_Help PARAMS(( VOID ));
-GLOBAL INT main( INT argc, CONST CHAR *argv[] )
+GLOBAL int
+main( int argc, const char *argv[] )
{
- /* Datentypen der portab-Library ueberpruefen */
- portab_check_types( );
+ BOOLEAN ok, configtest = FALSE;
+ INT32 pid, n;
+ INT i;
- /* Globale Variablen initialisieren */
+ umask( 0077 );
+
+ NGIRCd_Restart = FALSE;
NGIRCd_Quit = FALSE;
+ NGIRCd_NoDaemon = FALSE;
+ NGIRCd_Passive = FALSE;
+#ifdef DEBUG
+ NGIRCd_Debug = FALSE;
+#endif
+#ifdef SNIFFER
+ NGIRCd_Sniffer = FALSE;
+#endif
+ strcpy( NGIRCd_ConfFile, CONFIG_FILE );
- /* Module initialisieren */
- Log_Init( );
- Conf_Init( );
- IRC_Init( );
- Channel_Init( );
- Client_Init( );
- Conn_Init( );
+ /* Kommandozeile parsen */
+ for( i = 1; i < argc; i++ )
+ {
+ ok = FALSE;
+ if(( argv[i][0] == '-' ) && ( argv[i][1] == '-' ))
+ {
+ /* Lange Option */
- Initialize_Signal_Handler( );
-
- if( ! Conn_New_Listener( 6668 )) exit( 1 );
- if( ! Conn_New_Listener( 6669 )) Log( LOG_WARNING, "Can't create second listening socket!" );
+ if( strcmp( argv[i], "--config" ) == 0 )
+ {
+ if( i + 1 < argc )
+ {
+ /* Ok, danach kommt noch ein Parameter */
+ strncpy( NGIRCd_ConfFile, argv[i + 1], FNAME_LEN - 1 );
+ NGIRCd_ConfFile[FNAME_LEN - 1] = '\0';
+
+ /* zum uebernaechsten 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 < (INT32)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, danach kommt ein Leerzeichen */
+ strncpy( NGIRCd_ConfFile, argv[i + 1], FNAME_LEN - 1 );
+ NGIRCd_ConfFile[FNAME_LEN - 1] = '\0';
+
+ /* zum uebernaechsten Parameter */
+ i++; n = (INT32)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, argv[i][n] );
+ printf( "Try \"%s --help\" for more information.\n", PACKAGE );
+ exit( 1 );
+ }
+ }
+
+ }
+ if( ! ok )
+ {
+ printf( "%s: invalid option \"%s\"!\n", PACKAGE, argv[i] );
+ printf( "Try \"%s --help\" for more information.\n", PACKAGE );
+ 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( ));
+ }
- /* Hauptschleife */
while( ! NGIRCd_Quit )
{
- Conn_Handler( 5 );
- }
-
- /* Alles abmelden */
- Conn_Exit( );
- Client_Exit( );
- Channel_Exit( );
- IRC_Exit( );
- Conf_Exit( );
- Log_Exit( );
+ /* 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 = (INT32)fork( );
+ if( pid > 0 )
+ {
+ /* "alter" Prozess */
+ exit( 0 );
+ }
+ if( pid < 0 )
+ {
+ /* Fehler */
+ printf( "%s: Can't fork: %s!\nFatal error, exiting now ...\n", PACKAGE, 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_Restart = FALSE;
+ NGIRCd_Quit = FALSE;
+
+ /* Module initialisieren */
+ Log_Init( );
+ Resolve_Init( );
+ Conf_Init( );
+ Lists_Init( );
+ Channel_Init( );
+ Client_Init( );
+ 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 ));
+ }
+ }
+ Log( LOG_INFO, "Running as user %ld, group %ld, with PID %ld.", (INT32)getuid( ), (INT32)getgid( ), (INT32)getpid( ));
+
+ 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, VERSION, IRCPLUSFLAGS );
+ if( Conf_OperCanMode ) strcat( NGIRCd_ProtoID, "o" );
+#else
+ sprintf( NGIRCd_ProtoID, "%s%s %s|%s", PROTOVER, PROTOIRC, PACKAGE, VERSION );
+#endif
+ strcat( NGIRCd_ProtoID, " P" );
+ Log( LOG_DEBUG, "Protocol and server ID is \"%s\".", NGIRCd_ProtoID );
+
+ /* Vordefinierte Channels anlegen */
+ Channel_InitPredefined( );
+
+ /* Listen-Ports initialisieren */
+ Initialize_Listen_Ports( );
+
+ /* Hauptschleife */
+ Conn_Handler( );
+
+ /* Alles abmelden */
+ Conn_Exit( );
+ Client_Exit( );
+ Channel_Exit( );
+ Lists_Exit( );
+ Log_Exit( );
+ }
+
return 0;
} /* main */
-LOCAL VOID Initialize_Signal_Handler( VOID )
+GLOBAL CHAR *
+NGIRCd_Version( VOID )
+{
+ STATIC CHAR version[126];
+
+ sprintf( version, "%s %s-%s", PACKAGE, VERSION, NGIRCd_VersionAddition( ));
+ return version;
+} /* NGIRCd_Version */
+
+
+GLOBAL CHAR *
+NGIRCd_VersionAddition( VOID )
+{
+ STATIC CHAR txt[64];
+
+ strcpy( txt, "" );
+
+#ifdef USE_SYSLOG
+ if( txt[0] ) strcat( txt, "+" );
+ strcat( txt, "SYSLOG" );
+#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] ) strcat( txt, "-" );
+ strcat( txt, TARGET_CPU );
+ strcat( txt, "/" );
+ strcat( txt, TARGET_VENDOR );
+ strcat( txt, "/" );
+ strcat( txt, TARGET_OS );
+
+ return txt;
+} /* NGIRCd_VersionAddition */
+
+
+LOCAL VOID
+Initialize_Signal_Handler( VOID )
{
- /* Signal-Handler initialisieren: Strukturen anlegen und einhaengen :-) */
+ /* 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( SIGALRM, &saction, NULL );
- sigaction( SIGHUP, &saction, NULL);
sigaction( SIGINT, &saction, NULL );
sigaction( SIGQUIT, &saction, NULL );
sigaction( SIGTERM, &saction, NULL);
- sigaction( SIGUSR1, &saction, NULL);
- sigaction( SIGUSR2, &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 )
+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
case SIGINT:
case SIGQUIT:
/* wir soll(t)en uns wohl beenden ... */
- Log( LOG_NOTICE, "Got signal %d, terminating now ...", Signal );
+ if( Signal == SIGTERM ) Log( LOG_WARNING, "Got TERM signal, terminating now ..." );
+ else if( Signal == SIGINT ) Log( LOG_WARNING, "Got INT signal, terminating now ..." );
+ else if( Signal == SIGQUIT ) Log( LOG_WARNING, "Got QUIT signal, terminating now ..." );
NGIRCd_Quit = TRUE;
break;
+ case SIGHUP:
+ /* neu starten */
+ Log( LOG_WARNING, "Got HUP signal, restarting now ..." );
+ NGIRCd_Restart = TRUE;
+ break;
+ case SIGCHLD:
+ /* Child-Prozess wurde beendet. Zombies vermeiden: */
+ while( waitpid( -1, NULL, WNOHANG ) > 0);
+ break;
default:
/* unbekanntes bzw. unbehandeltes Signal */
Log( LOG_NOTICE, "Got signal %d! Ignored.", Signal );
} /* Signal_Handler */
+LOCAL VOID
+Initialize_Listen_Ports( VOID )
+{
+ /* Ports, auf denen der Server Verbindungen entgegennehmen
+ * soll, initialisieren */
+
+ INT created, i;
+
+ created = 0;
+ for( i = 0; i < Conf_ListenPorts_Count; i++ )
+ {
+ if( Conn_NewListener( Conf_ListenPorts[i] )) created++;
+ else Log( LOG_ERR, "Can't listen on port %u!", Conf_ListenPorts[i] );
+ }
+
+ if( created < 1 )
+ {
+ Log( LOG_ALERT, "Server isn't listening on a single port!" );
+ Log( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE );
+ exit( 1 );
+ }
+} /* Initialize_Listen_Ports */
+
+
+LOCAL VOID
+Show_Version( VOID )
+{
+ puts( NGIRCd_Version( ));
+ puts( "Copyright (c)2001,2002 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 detatch 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- */