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- /*
- * ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2006 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.
- */
- #include "portab.h"
- static char UNUSED id[] = "$Id: ngircd.c,v 1.113 2006/07/23 12:07:33 alex Exp $";
- /**
- * @file
- * The main program, including the C function main() which is called
- * by the loader of the operating system.
- */
- #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 <time.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <sys/wait.h>
- #include <fcntl.h>
- #include <pwd.h>
- #include <grp.h>
- #include "defines.h"
- #include "resolve.h"
- #include "conn.h"
- #include "client.h"
- #include "channel.h"
- #include "conf.h"
- #include "cvs-version.h"
- #include "lists.h"
- #include "log.h"
- #include "parse.h"
- #include "irc.h"
- #ifdef ZEROCONF
- #include "rendezvous.h"
- #endif
- #include "exp.h"
- #include "ngircd.h"
- static void Initialize_Signal_Handler PARAMS(( void ));
- static void Signal_Handler PARAMS(( int Signal ));
- static void Show_Version PARAMS(( void ));
- static void Show_Help PARAMS(( void ));
- static void Pidfile_Create PARAMS(( pid_t pid ));
- static void Pidfile_Delete PARAMS(( void ));
- static void Fill_Version PARAMS(( void ));
- static void Setup_FDStreams PARAMS(( void ));
- static bool NGIRCd_Init PARAMS(( bool ));
- /**
- * The main() function of ngIRCd.
- * Here all starts: this function is called by the operating system loader,
- * it is the first portion of code executed of ngIRCd.
- * @param argc The number of arguments passed to ngIRCd on the command line.
- * @param argv An array containing all the arguments passed to ngIRCd.
- * @return Global exit code of ngIRCd, zero on success.
- */
- GLOBAL int
- main( int argc, const char *argv[] )
- {
- bool ok, configtest = false;
- bool NGIRCd_NoDaemon = false;
- int i;
- size_t n;
- umask( 0077 );
- NGIRCd_SignalQuit = NGIRCd_SignalRestart = NGIRCd_SignalRehash = false;
- 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 ));
- Fill_Version( );
- /* 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 < 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 = 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( argv[i][n] == 't' )
- {
- configtest = true;
- ok = true;
- }
- 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 */
- NGIRCd_DebugLevel[0] = '\0';
- #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 )
- {
- /* Initialize global variables */
- 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;
- /* Initialize modules, part I */
- Log_Init( ! NGIRCd_NoDaemon );
- Conf_Init( );
- /* Initialize the "main program": chroot environment, user and
- * group ID, ... */
- if (!NGIRCd_Init(NGIRCd_NoDaemon)) {
- Log(LOG_ALERT, "Fatal: Initialization failed");
- exit(1);
- }
- /* Initialize modules, part II: these functions are eventually
- * called with already dropped privileges ... */
- Lists_Init( );
- Channel_Init( );
- Client_Init( );
- #ifdef ZEROCONF
- Rendezvous_Init( );
- #endif
- Conn_Init( );
- #ifdef DEBUG
- /* Redirect stderr handle to "error file" for debugging
- * when not running in "no daemon" mode: */
- if( ! NGIRCd_NoDaemon ) Log_InitErrorfile( );
- #endif
- /* 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
- snprintf( NGIRCd_ProtoID, sizeof 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
- snprintf( NGIRCd_ProtoID, sizeof NGIRCd_ProtoID, "%s%s %s|%s", PROTOVER, PROTOIRC, PACKAGE_NAME, PACKAGE_VERSION );
- #endif
- strlcat( NGIRCd_ProtoID, " P", sizeof NGIRCd_ProtoID );
- #ifdef ZLIB
- strlcat( NGIRCd_ProtoID, "Z", sizeof NGIRCd_ProtoID );
- #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 );
- Pidfile_Delete( );
- exit( 1 );
- }
-
- /* Hauptschleife */
- Conn_Handler( );
- /* Alles abmelden */
- Conn_Exit( );
- #ifdef ZEROCONF
- Rendezvous_Exit( );
- #endif
- Client_Exit( );
- Channel_Exit( );
- Lists_Exit( );
- Log_Exit( );
- }
- Pidfile_Delete( );
- return 0;
- } /* main */
- /**
- * Generate ngIRCd "version string".
- * This string is generated once and then stored in NGIRCd_Version for
- * further usage, for example by the IRC command VERSION and the --version
- * command line switch.
- */
- static void
- Fill_Version( void )
- {
- NGIRCd_VersionAddition[0] = '\0';
- #ifdef SYSLOG
- strlcpy( NGIRCd_VersionAddition, "SYSLOG", sizeof NGIRCd_VersionAddition );
- #endif
- #ifdef ZLIB
- if( NGIRCd_VersionAddition[0] )
- strlcat( NGIRCd_VersionAddition, "+", sizeof NGIRCd_VersionAddition );
- strlcat( NGIRCd_VersionAddition, "ZLIB", sizeof NGIRCd_VersionAddition );
- #endif
- #ifdef TCPWRAP
- if( NGIRCd_VersionAddition[0] )
- strlcat( NGIRCd_VersionAddition, "+", sizeof NGIRCd_VersionAddition );
- strlcat( NGIRCd_VersionAddition, "TCPWRAP", sizeof NGIRCd_VersionAddition );
- #endif
- #ifdef ZEROCONF
- if( NGIRCd_VersionAddition[0] )
- strlcat( NGIRCd_VersionAddition, "+", sizeof NGIRCd_VersionAddition );
- strlcat( NGIRCd_VersionAddition, "ZEROCONF", sizeof NGIRCd_VersionAddition );
- #endif
- #ifdef IDENTAUTH
- if( NGIRCd_VersionAddition[0] )
- strlcat( NGIRCd_VersionAddition, "+", sizeof NGIRCd_VersionAddition );
- strlcat( NGIRCd_VersionAddition, "IDENT", sizeof NGIRCd_VersionAddition );
- #endif
- #ifdef DEBUG
- if( NGIRCd_VersionAddition[0] )
- strlcat( NGIRCd_VersionAddition, "+", sizeof NGIRCd_VersionAddition );
- strlcat( NGIRCd_VersionAddition, "DEBUG", sizeof NGIRCd_VersionAddition );
- #endif
- #ifdef SNIFFER
- if( NGIRCd_VersionAddition[0] )
- strlcat( NGIRCd_VersionAddition, "+", sizeof NGIRCd_VersionAddition );
- strlcat( NGIRCd_VersionAddition, "SNIFFER", sizeof NGIRCd_VersionAddition );
- #endif
- #ifdef STRICT_RFC
- if( NGIRCd_VersionAddition[0] )
- strlcat( NGIRCd_VersionAddition, "+", sizeof NGIRCd_VersionAddition );
- strlcat( NGIRCd_VersionAddition, "RFC", sizeof NGIRCd_VersionAddition );
- #endif
- #ifdef IRCPLUS
- if( NGIRCd_VersionAddition[0] )
- strlcat( NGIRCd_VersionAddition, "+", sizeof NGIRCd_VersionAddition );
- strlcat( NGIRCd_VersionAddition, "IRCPLUS", sizeof NGIRCd_VersionAddition );
- #endif
- if( NGIRCd_VersionAddition[0] )
- strlcat( NGIRCd_VersionAddition, "-", sizeof( NGIRCd_VersionAddition ));
- strlcat( NGIRCd_VersionAddition, TARGET_CPU, sizeof( NGIRCd_VersionAddition ));
- strlcat( NGIRCd_VersionAddition, "/", sizeof( NGIRCd_VersionAddition ));
- strlcat( NGIRCd_VersionAddition, TARGET_VENDOR, sizeof( NGIRCd_VersionAddition ));
- strlcat( NGIRCd_VersionAddition, "/", sizeof( NGIRCd_VersionAddition ));
- strlcat( NGIRCd_VersionAddition, TARGET_OS, sizeof( NGIRCd_VersionAddition ));
- #ifdef CVSDATE
- snprintf( NGIRCd_Version, sizeof NGIRCd_Version,"%s %s(%s)-%s", PACKAGE_NAME, PACKAGE_VERSION, CVSDATE, NGIRCd_VersionAddition);
- #else
- snprintf( NGIRCd_Version, sizeof NGIRCd_Version, "%s %s-%s", PACKAGE_NAME, PACKAGE_VERSION, NGIRCd_VersionAddition);
- #endif
- } /* Fill_Version */
- /**
- * Reload the server configuration file.
- */
- GLOBAL void
- NGIRCd_Rehash( void )
- {
- char old_name[CLIENT_ID_LEN];
- Log( LOG_NOTICE|LOG_snotice, "Re-reading configuration NOW!" );
- NGIRCd_SignalRehash = false;
- /* Close down all listening sockets */
- Conn_ExitListeners( );
- /* Remember old server name */
- strlcpy( old_name, Conf_ServerName, sizeof old_name );
- /* Re-read configuration ... */
- Conf_Rehash( );
- /* Recover old server name: it can't be changed during run-time */
- if( strcmp( old_name, Conf_ServerName ) != 0 )
- {
- strlcpy( Conf_ServerName, old_name, sizeof Conf_ServerName );
- Log( LOG_ERR, "Can't change \"ServerName\" on runtime! Ignored new name." );
- }
- /* Create new pre-defined channels */
- Channel_InitPredefined( );
-
- /* Start listening on sockets */
- Conn_InitListeners( );
- /* Sync configuration with established connections */
- Conn_SyncServerStruct( );
- Log( LOG_NOTICE|LOG_snotice, "Re-reading of configuration done." );
- } /* NGIRCd_Rehash */
- /**
- * Initialize the signal handler.
- */
- static 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 */
- /**
- * Signal handler of ngIRCd.
- * This function is called whenever ngIRCd catches a signal sent by the
- * user and/or the system to it. For example SIGTERM and SIGHUP.
- * @param Signal Number of the signal to handle.
- */
- static void
- Signal_Handler( int Signal )
- {
- 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 */
- /**
- * Display copyright and version information of ngIRCd on the console.
- */
- static void
- Show_Version( void )
- {
- puts( NGIRCd_Version );
- puts( "Copyright (c)2001-2006 Alexander Barton (<alex@barton.de>) and Contributors." );
- puts( "Homepage: <http://ngircd.barton.de/>\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 */
- /**
- * Display a short help text on the console.
- * This help depends on the configuration of the executable and only shows
- * options that are actually enabled.
- */
- static 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( " -t, --configtest read, validate and display configuration; then exit" );
- puts( " --version output version information and exit" );
- puts( " --help display this help and exit" );
- } /* Show_Help */
- /**
- * Delete the file containing the process ID (PID).
- */
- static void
- Pidfile_Delete( void )
- {
- /* Pidfile configured? */
- if( ! Conf_PidFile[0] ) return;
- #ifdef DEBUG
- Log( LOG_DEBUG, "Removing PID file (%s) ...", Conf_PidFile );
- #endif
- if( unlink( Conf_PidFile ))
- Log( LOG_ERR, "Error unlinking PID file (%s): %s", Conf_PidFile, strerror( errno ));
- } /* Pidfile_Delete */
- /**
- * Create the file containing the process ID of ngIRCd ("PID file").
- * @param pid The process ID to be stored in this file.
- */
- static void
- Pidfile_Create(pid_t pid)
- {
- int pidfd;
- char pidbuf[64];
- int len;
- /* Pidfile configured? */
- if( ! Conf_PidFile[0] ) return;
- #ifdef DEBUG
- Log( LOG_DEBUG, "Creating PID file (%s) ...", Conf_PidFile );
- #endif
- pidfd = open( Conf_PidFile, O_RDWR|O_CREAT|O_EXCL, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
- if ( pidfd < 0 ) {
- Log( LOG_ERR, "Error writing PID file (%s): %s", Conf_PidFile, strerror( errno ));
- return;
- }
- len = snprintf(pidbuf, sizeof pidbuf, "%ld\n", (long)pid);
- if (len < 0 || len >= (int)sizeof pidbuf) {
- Log( LOG_ERR, "Error converting pid");
- return;
- }
-
- if (write(pidfd, pidbuf, (size_t)len) != (ssize_t)len)
- Log( LOG_ERR, "Can't write PID file (%s): %s", Conf_PidFile, strerror( errno ));
- if( close(pidfd) != 0 )
- Log( LOG_ERR, "Error closing PID file (%s): %s", Conf_PidFile, strerror( errno ));
- } /* Pidfile_Create */
- /**
- * Redirect stdin, stdout and stderr to apropriate file handles.
- */
- static void
- Setup_FDStreams( void )
- {
- int fd;
- /* Test if we can open /dev/null for reading and writing. If not
- * we are most probably chrooted already and the server has been
- * restarted. So we simply don't try to redirect stdXXX ... */
- fd = open( "/dev/null", O_RDWR );
- if ( fd < 0 ) {
- Log(LOG_WARNING, "Could not open /dev/null: %s", strerror(errno));
- return;
- }
- fflush(stdout);
- fflush(stderr);
- /* Create new stdin(0), stdout(1) and stderr(2) descriptors */
- dup2( fd, 0 ); dup2( fd, 1 ); dup2( fd, 2 );
- /* Close newly opened file descriptor if not stdin/out/err */
- if( fd > 2 ) close( fd );
- } /* Setup_FDStreams */
- static bool
- NGIRCd_getNobodyID(uid_t *uid, gid_t *gid )
- {
- struct passwd *pwd;
- pwd = getpwnam("nobody");
- if (!pwd) return false;
- if ( !pwd->pw_uid || !pwd->pw_gid)
- return false;
- *uid = pwd->pw_uid;
- *gid = pwd->pw_gid;
- endpwent();
- return true;
- }
- static bool
- NGIRCd_Init( bool NGIRCd_NoDaemon )
- {
- static bool initialized;
- bool chrooted = false;
- struct passwd *pwd;
- struct group *grp;
- int real_errno;
- pid_t pid;
- if (initialized)
- return true;
- if( Conf_Chroot[0] ) {
- if( chdir( Conf_Chroot ) != 0 ) {
- Log( LOG_ERR, "Can't chdir() in ChrootDir (%s): %s", Conf_Chroot, strerror( errno ));
- return false;
- }
- if( chroot( Conf_Chroot ) != 0 ) {
- if (errno != EPERM) {
- Log( LOG_ERR, "Can't change root directory to \"%s\": %s",
- Conf_Chroot, strerror( errno ));
- return false;
- }
- } else {
- chrooted = true;
- Log( LOG_INFO, "Changed root and working directory to \"%s\".", Conf_Chroot );
- }
- }
- if (Conf_UID == 0) {
- Log(LOG_INFO, "ServerUID must not be 0, using \"nobody\" instead.", Conf_UID);
- if (! NGIRCd_getNobodyID(&Conf_UID, &Conf_GID)) {
- Log(LOG_WARNING, "Could not get user/group ID of user \"nobody\": %s",
- errno ? strerror(errno) : "not found" );
- return false;
- }
- }
- if (getgid() != Conf_GID) {
- /* Change group ID */
- if (setgid(Conf_GID) != 0) {
- real_errno = errno;
- Log( LOG_ERR, "Can't change group ID to %u: %s", Conf_GID, strerror( errno ));
- if (real_errno != EPERM)
- return false;
- }
- }
- if (getuid() != Conf_UID) {
- /* Change user ID */
- if (setuid(Conf_UID) != 0) {
- real_errno = errno;
- Log(LOG_ERR, "Can't change user ID to %u: %s", Conf_UID, strerror(errno));
- if (real_errno != EPERM)
- return false;
- }
- }
- initialized = true;
- /* Normally a child process is forked which isn't any longer
- * connected to ther controlling terminal. Use "--nodaemon"
- * to disable this "daemon mode" (useful for debugging). */
- if ( ! NGIRCd_NoDaemon ) {
- pid = fork( );
- if( pid > 0 ) {
- /* "Old" process: exit. */
- exit( 0 );
- }
- if( pid < 0 ) {
- /* Error!? */
- fprintf( stderr, "%s: Can't fork: %s!\nFatal error, exiting now ...\n",
- PACKAGE_NAME, strerror( errno ));
- exit( 1 );
- }
- /* New child process */
- (void)setsid( );
- chdir( "/" );
- /* Detach stdin, stdout and stderr */
- Setup_FDStreams( );
- }
- pid = getpid();
- Pidfile_Create( pid );
- /* Check UID/GID we are running as, can be different from values
- * configured (e. g. if we were already started with a UID>0. */
- Conf_UID = getuid();
- Conf_GID = getgid();
- pwd = getpwuid( Conf_UID );
- grp = getgrgid( Conf_GID );
- Log( LOG_INFO, "Running as user %s(%ld), group %s(%ld), with PID %ld.",
- pwd ? pwd->pw_name : "unknown", Conf_UID,
- grp ? grp->gr_name : "unknown", Conf_GID, pid);
- if ( chrooted ) {
- Log( LOG_INFO, "Running chrooted, chrootdir \"%s\".", Conf_Chroot );
- return true;
- } else {
- Log( LOG_INFO, "Not running chrooted." );
- }
- /* Change working directory to home directory of the user
- * we are running as (only when running in daemon mode and not in chroot) */
-
- if ( pwd ) {
- if (!NGIRCd_NoDaemon ) {
- if( chdir( pwd->pw_dir ) == 0 )
- Log( LOG_DEBUG, "Changed working directory to \"%s\" ...", pwd->pw_dir );
- else
- Log( LOG_ERR, "Can't change working directory to \"%s\": %s",
- pwd->pw_dir, strerror( errno ));
- }
- } else {
- Log( LOG_ERR, "Can't get user informaton for UID %d!?", Conf_UID );
- }
- return true;
- }
- /* -eof- */
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