X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd-alex.git;a=blobdiff_plain;f=src%2Fngircd%2Fngircd.c;h=ecc9d332a1a77675b5889497366e68c4c8b3d955;hp=73d4ca990acc408ca3c1c287f8f3a2c2c35d8462;hb=f73e403ae59fc4a8d5d6e55523ff878ab3e5ef72;hpb=eb952e35ccf28aa4d60a944d5cb179025624fc46 diff --git a/src/ngircd/ngircd.c b/src/ngircd/ngircd.c index 73d4ca99..ecc9d332 100644 --- a/src/ngircd/ngircd.c +++ b/src/ngircd/ngircd.c @@ -1,143 +1,383 @@ /* * 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 1.10 2001/12/24 01:34:38 alex Exp $ + * $Id: ngircd.c,v 1.44 2002/04/24 13:33:56 alex Exp $ * * ngircd.c: Hier beginnt alles ;-) - * - * $Log: ngircd.c,v $ - * Revision 1.10 2001/12/24 01:34:38 alex - * - Signal-Handler aufgeraeumt; u.a. SIGPIPE wird nun korrekt ignoriert. - * - * Revision 1.9 2001/12/21 22:24:50 alex - * - neues Modul "parse" wird initialisiert und abgemeldet. - * - * 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 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 -#include "global.h" - -#include +#include "portab.h" +#include "imp.h" #include +#include #include +#include #include +#include +#include +#include +#include +#include #include "channel.h" #include "client.h" #include "conf.h" #include "conn.h" +#include "defines.h" #include "irc.h" #include "log.h" #include "parse.h" -#include +#include "exp.h" #include "ngircd.h" LOCAL VOID Initialize_Signal_Handler( VOID ); LOCAL VOID Signal_Handler( INT Signal ); +LOCAL VOID Initialize_Listen_Ports( VOID ); + +LOCAL VOID Show_Version( VOID ); +LOCAL VOID Show_Help( 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 */ + 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 ); + + /* Kommandozeile parsen */ + for( i = 1; i < argc; i++ ) + { + ok = FALSE; + if(( argv[i][0] == '-' ) && ( argv[i][1] == '-' )) + { + /* Lange Option */ - /* Module initialisieren */ - Log_Init( ); - Conf_Init( ); - Parse_Init( ); - IRC_Init( ); - Channel_Init( ); - Client_Init( ); - Conn_Init( ); + 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'; - Initialize_Signal_Handler( ); - - if( ! Conn_New_Listener( 6668 )) exit( 1 ); - if( ! Conn_New_Listener( 6669 )) Log( LOG_WARNING, "Can't create second listening socket!" ); + /* 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 = 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( PACKAGE": invalid option \"-%c\"!\n", argv[i][n] ); + puts( "Try \""PACKAGE" --help\" for more information." ); + exit( 1 ); + } + } + + } + if( ! ok ) + { + printf( PACKAGE": invalid option \"%s\"!\n", argv[i] ); + puts( "Try \""PACKAGE" --help\" for more information." ); + 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 ) 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( ); - Parse_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( PACKAGE": Can't fork: %s!\nFatal error, exiting now ...", 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( ); + Conf_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.", (INT32)getuid( ), (INT32)getgid( )); + + Log_InitErrorfile( ); + + /* Signal-Handler initialisieren */ + Initialize_Signal_Handler( ); + + /* Listen-Ports initialisieren */ + Initialize_Listen_Ports( ); + + /* Hauptschleife */ + while( TRUE ) + { + if( NGIRCd_Quit || NGIRCd_Restart ) break; + Conn_Handler( 5 ); + } + + /* Alles abmelden */ + Conn_Exit( ); + Client_Exit( ); + Channel_Exit( ); + Conf_Exit( ); + Log_Exit( ); + } + return 0; } /* main */ +GLOBAL CHAR *NGIRCd_Version( VOID ) +{ + STATIC CHAR version[126]; + + sprintf( version, PACKAGE" version "VERSION"-%s", 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 REGEX + if( txt[0] ) strcat( txt, "+" ); + strcat( txt, "REGEX" ); +#endif +#ifdef STRICT_RFC + if( txt[0] ) strcat( txt, "+" ); + strcat( txt, "RFC" ); +#endif +#ifdef DEBUG + if( txt[0] ) strcat( txt, "+" ); + strcat( txt, "DEBUG" ); +#endif +#ifdef SNIFFER + if( txt[0] ) strcat( txt, "+" ); + strcat( txt, "SNIFFER" ); +#endif + + if( txt[0] ) strcat( txt, "-" ); + strcat( txt, TARGET_CPU"/"TARGET_VENDOR"/"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 */ - saction.sa_handler = Signal_Handler; 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 */ @@ -153,9 +393,20 @@ LOCAL VOID Signal_Handler( INT Signal ) 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 ); @@ -163,4 +414,54 @@ LOCAL VOID Signal_Handler( INT Signal ) } /* Signal_Handler */ +LOCAL VOID Initialize_Listen_Ports( VOID ) +{ + /* Ports, auf denen der Server Verbindungen entgegennehmen + * soll, initialisieren */ + + UINT 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, PACKAGE" exiting due to fatal errors!" ); + exit( 1 ); + } +} /* Initialize_Listen_Ports */ + + +LOCAL VOID Show_Version( VOID ) +{ + puts( NGIRCd_Version( )); + puts( "Copyright (c)2001,2002 by Alexander Barton ()." ); + puts( "Homepage: \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 use file 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- */