/*
* 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 1.1 2001/12/11 21:53:04 alex Exp $
+ * $Id: ngircd.c,v 1.61 2002/11/22 23:31:23 alex Exp $
*
* ngircd.c: Hier beginnt alles ;-)
- *
- * $Log: ngircd.c,v $
- * Revision 1.1 2001/12/11 21:53:04 alex
- * Initial revision
- *
*/
-#define PORTAB_CHECK_TYPES
-
-#ifndef socklen_t
-#define socklen_t int
-#endif
-
-#include <portab.h>
-#include "global.h"
+#include "portab.h"
-#include <imp.h>
+#include "imp.h"
#include <assert.h>
#include <errno.h>
-#include <signal.h>
-#include <stdint.h>
#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
#include <string.h>
-#include <sys/types.h>
-#include <sys/socket.h>
#include <unistd.h>
-#include <netinet/in.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"
-#include <exp.h>
+#include "exp.h"
#include "ngircd.h"
-BOOLEAN do_quit_now = FALSE;
+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 ));
-LOCAL VOID Signal_Handler( INT Signal );
-
-GLOBAL INT main( INT argc, CONST CHAR *argv[] )
+GLOBAL int
+main( int argc, const char *argv[] )
{
- FILE *fd;
- struct sigaction saction;
- struct sockaddr_in my_sock, a_sock;
- int my_sock_hndl;
- int a_sock_len, a_hndl;
+ struct passwd *pwd;
+ struct group *grp;
+ BOOLEAN ok, configtest = FALSE;
+ LONG pid, n;
+ INT i;
- portab_check_types( );
+ umask( 0077 );
- Log_Init( );
-
- /* Signal-Handler initialisieren */
- memset( &saction, 0, sizeof( saction ));
- saction.sa_handler = Signal_Handler;
+ 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 );
- /* Signal-Handler einhaengen */
- sigaction( SIGHUP, &saction, NULL);
- sigaction( SIGTERM, &saction, NULL);
- sigaction( SIGUSR1, &saction, NULL);
- sigaction( SIGUSR2, &saction, NULL);
-
- /* Server-"Listen"-Socket initialisieren */
- memset( &my_sock, 0, sizeof( my_sock ));
- my_sock.sin_family = AF_INET;
- my_sock.sin_port = htons( 6668 );
- my_sock.sin_addr.s_addr = htonl( INADDR_ANY );
-
- /* Socket erzeugen, ... */
- my_sock_hndl = socket( AF_INET, SOCK_STREAM, 0);
- if( socket < 0 )
+ /* Kommandozeile parsen */
+ for( i = 1; i < argc; i++ )
{
- Log( LOG_FATAL, "Can't create socket: %s", strerror( errno ));
- exit( 1 );
+ ok = FALSE;
+ if(( argv[i][0] == '-' ) && ( argv[i][1] == '-' ))
+ {
+ /* Lange Option */
+
+ 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 < (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, danach kommt ein Leerzeichen */
+ strncpy( NGIRCd_ConfFile, argv[i + 1], FNAME_LEN - 1 );
+ NGIRCd_ConfFile[FNAME_LEN - 1] = '\0';
+
+ /* zum uebernaechsten 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, 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 );
+ }
}
-
- /* ... an Port binden ... */
- if( bind( my_sock_hndl, (struct sockaddr *)&my_sock, (socklen_t)sizeof( my_sock )) < 0 )
+
+ /* 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 )
{
- Log( LOG_FATAL, "Can't bind socket: %s", strerror( errno ));
- exit( 1 );
+ NGIRCd_Debug = TRUE;
+ strcpy( NGIRCd_DebugLevel, "2" );
}
+#endif
- /* ... und in "listen mode" gehen :-) */
- if( listen( my_sock_hndl, 4 ) < 0 )
+ /* Soll nur die Konfigurations ueberprueft und ausgegeben werden? */
+ if( configtest )
{
- Log( LOG_FATAL, "Can't listen on soecket: %s", strerror( errno ));
- exit( 1 );
+ Show_Version( ); puts( "" );
+ exit( Conf_Test( ));
}
- /* Hauptschleife */
- while( ! do_quit_now )
+ while( ! NGIRCd_Quit )
{
- /* auf Verbindung warten */
- a_sock_len = sizeof( a_sock );
- memset( &a_sock, 0, a_sock_len );
- a_hndl = accept( my_sock_hndl, (struct sockaddr *)&a_sock, &a_sock_len );
- if( a_hndl < 0 )
+ /* 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 )
{
- if( errno == EINTR ) continue;
-
- Log( LOG_FATAL, "Can't accept connection: %s", strerror( errno ));
- exit( 1 );
+ /* 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, 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, "Accepted connection from %s:%d (handle %d).", inet_ntoa( a_sock.sin_addr ), ntohs( a_sock.sin_port), a_hndl );
- fd = fdopen( a_hndl, "w" );
+
+ /* 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, 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 );
- fputs( "hello world!\n", fd ); fflush( fd );
+ /* 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 );
+ exit( 1 );
+ }
- fclose( fd );
- close( a_hndl );
- }
-
- /* Aufraeumen (Sockets etc.!?) */
+ /* Hauptschleife */
+ Conn_Handler( );
+
+ /* Alles abmelden */
+ Conn_Exit( );
+ Client_Exit( );
+ Channel_Exit( );
+ Lists_Exit( );
+ Log_Exit( );
+ }
- Log_Exit( );
return 0;
} /* main */
-LOCAL VOID Signal_Handler( INT Signal )
+GLOBAL CHAR *
+NGIRCd_Version( VOID )
{
+ STATIC CHAR version[126];
+
+#ifdef CVSDATE
+ sprintf( version, "%s %s(%s)-%s", PACKAGE, VERSION, CVSDATE, NGIRCd_VersionAddition( ));
+#else
+ sprintf( version, "%s %s-%s", PACKAGE, VERSION, NGIRCd_VersionAddition( ));
+#endif
+ 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 */
+
+
+GLOBAL VOID
+NGIRCd_Rehash( VOID )
+{
+ CHAR old_name[CLIENT_ID_LEN];
+
+ /* Alle Listen-Sockets schliessen */
+ Conn_ExitListeners( );
+
+ /* Alten Server-Namen merken */
+ strcpy( old_name, Conf_ServerName );
+
+ /* Konfiguration neu lesen ... */
+ Conf_Init( );
+
+ /* 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( );
+
+ Log( LOG_INFO, "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:
- Log( LOG_WARN, "Got SIGTERM, terminating now ..." );
- do_quit_now = TRUE;
+ case SIGINT:
+ case SIGQUIT:
+ /* wir soll(t)en uns wohl beenden ... */
+ if( Signal == SIGTERM ) Log( LOG_WARNING|LOG_snotice, "Got TERM signal, terminating now ..." );
+ else if( Signal == SIGINT ) Log( LOG_WARNING|LOG_snotice, "Got INT signal, terminating now ..." );
+ else if( Signal == SIGQUIT ) Log( LOG_WARNING|LOG_snotice, "Got QUIT signal, terminating now ..." );
+ NGIRCd_Quit = TRUE;
+ break;
+ case SIGHUP:
+ /* Konfiguration neu einlesen: */
+ Log( LOG_WARNING|LOG_snotice, "Got HUP signal, re-reading configuration ..." );
+ NGIRCd_Rehash( );
+ break;
+ case SIGCHLD:
+ /* Child-Prozess wurde beendet. Zombies vermeiden: */
+ while( waitpid( -1, NULL, WNOHANG ) > 0);
break;
default:
- Log( LOG_WARN, "Got signal %d! I'll ignore it.", Signal );
+ /* unbekanntes bzw. unbehandeltes Signal */
+ Log( LOG_NOTICE, "Got signal %d! Ignored.", Signal );
}
} /* Signal_Handler */
+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 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- */
projects / ngircd-alex.git / blobdiff