2 * ngIRCd -- The Next Generation IRC Daemon
3 * Copyright (c)2001-2003 by Alexander Barton (alex@barton.de)
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 * Please read the file COPYING, README and AUTHORS for more information.
11 * Main program -- main()
17 static char UNUSED id[] = "$Id: ngircd.c,v 1.79 2003/12/27 13:09:24 alex Exp $";
27 #include <sys/types.h>
39 #include "cvs-version.h"
47 #include "rendezvous.h"
54 LOCAL VOID Initialize_Signal_Handler PARAMS(( VOID ));
55 LOCAL VOID Signal_Handler PARAMS(( INT Signal ));
57 LOCAL VOID Show_Version PARAMS(( VOID ));
58 LOCAL VOID Show_Help PARAMS(( VOID ));
62 main( int argc, const char *argv[] )
66 BOOLEAN ok, configtest = FALSE;
72 NGIRCd_SignalQuit = NGIRCd_SignalRestart = NGIRCd_SignalRehash = FALSE;
73 NGIRCd_NoDaemon = NGIRCd_Passive = FALSE;
78 NGIRCd_Sniffer = FALSE;
80 strlcpy( NGIRCd_ConfFile, SYSCONFDIR, sizeof( NGIRCd_ConfFile ));
81 strlcat( NGIRCd_ConfFile, CONFIG_FILE, sizeof( NGIRCd_ConfFile ));
83 /* Kommandozeile parsen */
84 for( i = 1; i < argc; i++ )
87 if(( argv[i][0] == '-' ) && ( argv[i][1] == '-' ))
91 if( strcmp( argv[i], "--config" ) == 0 )
95 /* Ok, there's an parameter left */
96 strlcpy( NGIRCd_ConfFile, argv[i + 1], sizeof( NGIRCd_ConfFile ));
102 if( strcmp( argv[i], "--configtest" ) == 0 )
108 if( strcmp( argv[i], "--debug" ) == 0 )
114 if( strcmp( argv[i], "--help" ) == 0 )
117 puts( "" ); Show_Help( ); puts( "" );
120 if( strcmp( argv[i], "--nodaemon" ) == 0 )
122 NGIRCd_NoDaemon = TRUE;
125 if( strcmp( argv[i], "--passive" ) == 0 )
127 NGIRCd_Passive = TRUE;
131 if( strcmp( argv[i], "--sniffer" ) == 0 )
133 NGIRCd_Sniffer = TRUE;
137 if( strcmp( argv[i], "--version" ) == 0 )
143 else if(( argv[i][0] == '-' ) && ( argv[i][1] != '-' ))
147 for( n = 1; n < (LONG)strlen( argv[i] ); n++ )
151 if( argv[i][n] == 'd' )
157 if( argv[i][n] == 'f' )
159 if(( ! argv[i][n + 1] ) && ( i + 1 < argc ))
161 /* Ok, next character is a blank */
162 strlcpy( NGIRCd_ConfFile, argv[i + 1], sizeof( NGIRCd_ConfFile ));
164 /* go to the following parameter */
165 i++; n = (LONG)strlen( argv[i] );
169 if( argv[i][n] == 'n' )
171 NGIRCd_NoDaemon = TRUE;
174 if( argv[i][n] == 'p' )
176 NGIRCd_Passive = TRUE;
180 if( argv[i][n] == 's' )
182 NGIRCd_Sniffer = TRUE;
189 printf( "%s: invalid option \"-%c\"!\n", PACKAGE_NAME, argv[i][n] );
190 printf( "Try \"%s --help\" for more information.\n", PACKAGE_NAME );
198 printf( "%s: invalid option \"%s\"!\n", PACKAGE_NAME, argv[i] );
199 printf( "Try \"%s --help\" for more information.\n", PACKAGE_NAME );
204 /* Debug-Level (fuer IRC-Befehl "VERSION") ermitteln */
205 strcpy( NGIRCd_DebugLevel, "" );
207 if( NGIRCd_Debug ) strcpy( NGIRCd_DebugLevel, "1" );
213 strcpy( NGIRCd_DebugLevel, "2" );
217 /* Soll nur die Konfigurations ueberprueft und ausgegeben werden? */
220 Show_Version( ); puts( "" );
224 while( ! NGIRCd_SignalQuit )
226 /* In der Regel wird ein Sub-Prozess ge-fork()'t, der
227 * nicht mehr mit dem Terminal verbunden ist. Mit der
228 * Option "--nodaemon" kann dies (z.B. zum Debuggen)
229 * verhindert werden. */
230 if( ! NGIRCd_NoDaemon )
232 /* Daemon im Hintergrund erzeugen */
236 /* "alter" Prozess */
242 printf( "%s: Can't fork: %s!\nFatal error, exiting now ...\n", PACKAGE_NAME, strerror( errno ));
246 /* Child-Prozess initialisieren */
251 /* Globale Variablen initialisieren */
252 NGIRCd_Start = time( NULL );
253 (VOID)strftime( NGIRCd_StartStr, 64, "%a %b %d %Y at %H:%M:%S (%Z)", localtime( &NGIRCd_Start ));
254 NGIRCd_SignalRehash = FALSE;
255 NGIRCd_SignalRestart = FALSE;
256 NGIRCd_SignalQuit = FALSE;
258 /* Module initialisieren */
270 /* Wenn als root ausgefuehrt und eine andere UID
271 * konfiguriert ist, jetzt zu dieser wechseln */
276 /* Neue Group-ID setzen */
277 if( setgid( Conf_GID ) != 0 ) Log( LOG_ERR, "Can't change Group-ID to %u: %s", Conf_GID, strerror( errno ));
281 /* Neue User-ID setzen */
282 if( setuid( Conf_UID ) != 0 ) Log( LOG_ERR, "Can't change User-ID to %u: %s", Conf_UID, strerror( errno ));
286 /* User, Gruppe und Prozess-ID des Daemon ausgeben */
287 pwd = getpwuid( getuid( )); grp = getgrgid( getgid( ));
288 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( ));
290 /* stderr in "Error-File" umlenken */
291 Log_InitErrorfile( );
293 /* Signal-Handler initialisieren */
294 Initialize_Signal_Handler( );
296 /* Protokoll- und Server-Identifikation erzeugen. Die vom ngIRCd
297 * beim PASS-Befehl verwendete Syntax sowie die erweiterten Flags
298 * sind in doc/Protocol.txt beschrieben. */
300 sprintf( NGIRCd_ProtoID, "%s%s %s|%s:%s", PROTOVER, PROTOIRCPLUS, PACKAGE_NAME, PACKAGE_VERSION, IRCPLUSFLAGS );
302 strcat( NGIRCd_ProtoID, "Z" );
304 if( Conf_OperCanMode ) strcat( NGIRCd_ProtoID, "o" );
306 sprintf( NGIRCd_ProtoID, "%s%s %s|%s", PROTOVER, PROTOIRC, PACKAGE_NAME, PACKAGE_VERSION );
308 strcat( NGIRCd_ProtoID, " P" );
310 strcat( NGIRCd_ProtoID, "Z" );
312 Log( LOG_DEBUG, "Protocol and server ID is \"%s\".", NGIRCd_ProtoID );
314 /* Vordefinierte Channels anlegen */
315 Channel_InitPredefined( );
317 /* Listen-Ports initialisieren */
318 if( Conn_InitListeners( ) < 1 )
320 Log( LOG_ALERT, "Server isn't listening on a single port!" );
321 Log( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
344 NGIRCd_Version( VOID )
346 STATIC CHAR version[126];
349 sprintf( version, "%s %s(%s)-%s", PACKAGE_NAME, PACKAGE_VERSION, CVSDATE, NGIRCd_VersionAddition( ));
351 sprintf( version, "%s %s-%s", PACKAGE_NAME, PACKAGE_VERSION, NGIRCd_VersionAddition( ));
354 } /* NGIRCd_Version */
358 NGIRCd_VersionAddition( VOID )
360 STATIC CHAR txt[200];
365 if( txt[0] ) strcat( txt, "+" );
366 strcat( txt, "SYSLOG" );
369 if( txt[0] ) strcat( txt, "+" );
370 strcat( txt, "ZLIB" );
373 if( txt[0] ) strcat( txt, "+" );
374 strcat( txt, "TCPWRAP" );
377 if( txt[0] ) strcat( txt, "+" );
378 strcat( txt, "RENDEZVOUS" );
381 if( txt[0] ) strcat( txt, "+" );
382 strcat( txt, "IDENT" );
385 if( txt[0] ) strcat( txt, "+" );
386 strcat( txt, "DEBUG" );
389 if( txt[0] ) strcat( txt, "+" );
390 strcat( txt, "SNIFFER" );
393 if( txt[0] ) strcat( txt, "+" );
394 strcat( txt, "RFC" );
397 if( txt[0] ) strcat( txt, "+" );
398 strcat( txt, "IRCPLUS" );
401 if( txt[0] ) strlcat( txt, "-", sizeof( txt ));
402 strlcat( txt, TARGET_CPU, sizeof( txt ));
403 strlcat( txt, "/", sizeof( txt ));
404 strlcat( txt, TARGET_VENDOR, sizeof( txt ));
405 strlcat( txt, "/", sizeof( txt ));
406 strlcat( txt, TARGET_OS, sizeof( txt ));
409 } /* NGIRCd_VersionAddition */
413 NGIRCd_Rehash( VOID )
415 CHAR old_name[CLIENT_ID_LEN];
417 Log( LOG_NOTICE|LOG_snotice, "Re-reading configuration NOW!" );
418 NGIRCd_SignalRehash = FALSE;
420 /* Alle Listen-Sockets schliessen */
421 Conn_ExitListeners( );
423 /* Alten Server-Namen merken */
425 assert( sizeof( old_name ) == sizeof( Conf_ServerName ));
427 strcpy( old_name, Conf_ServerName );
429 /* Konfiguration neu lesen ... */
432 /* Alten Server-Namen wiederherstellen: dieser
433 * kann nicht zur Laufzeit geaendert werden ... */
434 if( strcmp( old_name, Conf_ServerName ) != 0 )
436 strcpy( Conf_ServerName, old_name );
437 Log( LOG_ERR, "Can't change \"ServerName\" on runtime! Ignored new name." );
440 /* neue pre-defined Channel anlegen: */
441 Channel_InitPredefined( );
443 /* Listen-Sockets neu anlegen: */
444 Conn_InitListeners( );
446 /* Sync configuration with established connections */
447 Conn_SyncServerStruct( );
449 Log( LOG_NOTICE|LOG_snotice, "Re-reading of configuration done." );
450 } /* NGIRCd_Rehash */
454 Initialize_Signal_Handler( VOID )
456 /* Signal-Handler initialisieren: einige Signale
457 * werden ignoriert, andere speziell behandelt. */
459 #ifdef HAVE_SIGACTION
460 /* sigaction() ist vorhanden */
462 struct sigaction saction;
464 /* Signal-Struktur initialisieren */
465 memset( &saction, 0, sizeof( saction ));
466 saction.sa_handler = Signal_Handler;
468 saction.sa_flags |= SA_RESTART;
471 saction.sa_flags |= SA_NOCLDWAIT;
474 /* Signal-Handler einhaengen */
475 sigaction( SIGINT, &saction, NULL );
476 sigaction( SIGQUIT, &saction, NULL );
477 sigaction( SIGTERM, &saction, NULL);
478 sigaction( SIGHUP, &saction, NULL);
479 sigaction( SIGCHLD, &saction, NULL);
481 /* einige Signale ignorieren */
482 saction.sa_handler = SIG_IGN;
483 sigaction( SIGPIPE, &saction, NULL );
485 /* kein sigaction() vorhanden */
487 /* Signal-Handler einhaengen */
488 signal( SIGINT, Signal_Handler );
489 signal( SIGQUIT, Signal_Handler );
490 signal( SIGTERM, Signal_Handler );
491 signal( SIGHUP, Signal_Handler );
492 signal( SIGCHLD, Signal_Handler );
494 /* einige Signale ignorieren */
495 signal( SIGPIPE, SIG_IGN );
497 } /* Initialize_Signal_Handler */
501 Signal_Handler( INT Signal )
503 /* Signal-Handler. Dieser wird aufgerufen, wenn eines der Signale eintrifft,
504 * fuer das wir uns registriert haben (vgl. Initialize_Signal_Handler). Die
505 * Nummer des eingetroffenen Signals wird der Funktion uebergeben. */
512 /* wir soll(t)en uns wohl beenden ... */
513 NGIRCd_SignalQuit = TRUE;
516 /* Konfiguration neu einlesen: */
517 NGIRCd_SignalRehash = TRUE;
520 /* Child-Prozess wurde beendet. Zombies vermeiden: */
521 while( waitpid( -1, NULL, WNOHANG ) > 0);
525 /* unbekanntes bzw. unbehandeltes Signal */
526 Log( LOG_DEBUG, "Got signal %d! Ignored.", Signal );
529 } /* Signal_Handler */
535 puts( NGIRCd_Version( ));
536 puts( "Copyright (c)2001-2003 by Alexander Barton (<alex@barton.de>)." );
537 puts( "Homepage: <http://arthur.ath.cx/~alex/ngircd/>\n" );
538 puts( "This is free software; see the source for copying conditions. There is NO" );
539 puts( "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." );
547 puts( " -d, --debug log extra debug messages" );
549 puts( " -f, --config <f> use file <f> as configuration file" );
550 puts( " -n, --nodaemon don't fork and don't detach from controlling terminal" );
551 puts( " -p, --passive disable automatic connections to other servers" );
553 puts( " -s, --sniffer enable network sniffer and display all IRC traffic" );
555 puts( " --configtest read, validate and display configuration; then exit" );
556 puts( " --version output version information and exit" );
557 puts( " --help display this help and exit" );