X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd-alex.git;a=blobdiff_plain;f=src%2Fngircd%2Fngircd.c;h=63fc64bf2ef2ac6a34ff847bb9f59ad7d1b036d8;hp=73c9a15138f7b6e198b0a166c976d767216a846f;hb=6d11fb149707194e986b0d64af3d44f21e158fcc;hpb=feb31e4200b42e0a5e9fb9637fa5f03c7ec05fcb diff --git a/src/ngircd/ngircd.c b/src/ngircd/ngircd.c index 73c9a151..63fc64bf 100644 --- a/src/ngircd/ngircd.c +++ b/src/ngircd/ngircd.c @@ -1,6 +1,6 @@ /* * ngIRCd -- The Next Generation IRC Daemon - * Copyright (c)2001-2007 Alexander Barton (alex@barton.de). + * Copyright (c)2001-2011 Alexander Barton (alex@barton.de) and Contributors. * * 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 @@ -12,8 +12,6 @@ #include "portab.h" -static char UNUSED id[] = "$Id: ngircd.c,v 1.118 2008/02/26 22:04:17 fw Exp $"; - /** * @file * The main program, including the C function main() which is called @@ -31,21 +29,24 @@ static char UNUSED id[] = "$Id: ngircd.c,v 1.118 2008/02/26 22:04:17 fw Exp $"; #include #include #include -#include #include #include #include +#if defined(DEBUG) && defined(HAVE_MTRACE) +#include +#endif + #include "defines.h" -#include "resolve.h" #include "conn.h" -#include "client.h" +#include "conf-ssl.h" #include "channel.h" #include "conf.h" -#include "cvs-version.h" #include "lists.h" #include "log.h" #include "parse.h" +#include "sighandlers.h" +#include "io.h" #include "irc.h" #ifdef ZEROCONF @@ -56,9 +57,6 @@ static char UNUSED id[] = "$Id: ngircd.c,v 1.118 2008/02/26 22:04:17 fw Exp $"; #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 )); @@ -67,10 +65,11 @@ static void Pidfile_Delete PARAMS(( void )); static void Fill_Version PARAMS(( void )); -static void Setup_FDStreams PARAMS(( void )); +static void Setup_FDStreams PARAMS(( int fd )); static bool NGIRCd_Init PARAMS(( bool )); + /** * The main() function of ngIRCd. * Here all starts: this function is called by the operating system loader, @@ -87,9 +86,15 @@ main( int argc, const char *argv[] ) int i; size_t n; +#if defined(DEBUG) && defined(HAVE_MTRACE) + /* enable GNU libc memory tracing when running in debug mode + * and functionality available */ + mtrace(); +#endif + umask( 0077 ); - NGIRCd_SignalQuit = NGIRCd_SignalRestart = NGIRCd_SignalRehash = false; + NGIRCd_SignalQuit = NGIRCd_SignalRestart = false; NGIRCd_Passive = false; #ifdef DEBUG NGIRCd_Debug = false; @@ -102,14 +107,13 @@ main( int argc, const char *argv[] ) Fill_Version( ); - /* Kommandozeile parsen */ + /* parse conmmand line */ for( i = 1; i < argc; i++ ) { ok = false; if(( argv[i][0] == '-' ) && ( argv[i][1] == '-' )) { - /* Lange Option */ - + /* long option */ if( strcmp( argv[i], "--config" ) == 0 ) { if( i + 1 < argc ) @@ -164,19 +168,17 @@ main( int argc, const char *argv[] ) } else if(( argv[i][0] == '-' ) && ( argv[i][1] != '-' )) { - /* Kurze Option */ + /* short option */ for( n = 1; n < strlen( argv[i] ); n++ ) { ok = false; #ifdef DEBUG - if( argv[i][n] == 'd' ) - { + if (argv[i][n] == 'd') { NGIRCd_Debug = true; ok = true; } #endif - if( argv[i][n] == 'f' ) - { + if (argv[i][n] == 'f') { if(( ! argv[i][n + 1] ) && ( i + 1 < argc )) { /* Ok, next character is a blank */ @@ -188,31 +190,38 @@ main( int argc, const char *argv[] ) ok = true; } } - if( argv[i][n] == 'n' ) - { + + if (argv[i][n] == 'h') { + Show_Version(); + puts(""); Show_Help(); puts(""); + exit(1); + } + + if (argv[i][n] == 'n') { NGIRCd_NoDaemon = true; ok = true; } - if( argv[i][n] == 'p' ) - { + if (argv[i][n] == 'p') { NGIRCd_Passive = true; ok = true; } #ifdef SNIFFER - if( argv[i][n] == 's' ) - { + if (argv[i][n] == 's') { NGIRCd_Sniffer = true; ok = true; } #endif - if( argv[i][n] == 't' ) - { + if (argv[i][n] == 't') { configtest = true; ok = true; } - if( ! ok ) - { + if (argv[i][n] == 'V') { + Show_Version(); + exit(1); + } + + 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 ); @@ -228,7 +237,7 @@ main( int argc, const char *argv[] ) } } - /* Debug-Level (fuer IRC-Befehl "VERSION") ermitteln */ + /* Debug-Level (for IRCs "VERSION" command) */ NGIRCd_DebugLevel[0] = '\0'; #ifdef DEBUG if( NGIRCd_Debug ) strcpy( NGIRCd_DebugLevel, "1" ); @@ -241,7 +250,6 @@ main( int argc, const char *argv[] ) } #endif - /* Soll nur die Konfigurations ueberprueft und ausgegeben werden? */ if( configtest ) { Show_Version( ); puts( "" ); @@ -254,7 +262,6 @@ main( int argc, const char *argv[] ) 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; @@ -278,18 +285,21 @@ main( int argc, const char *argv[] ) #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 + if (!io_library_init(CONNECTION_POOL)) { + Log(LOG_ALERT, "Fatal: Cannot initialize IO routines: %s", strerror(errno)); + exit(1); + } - /* Signal-Handler initialisieren */ - Initialize_Signal_Handler( ); + if (!Signals_Init()) { + Log(LOG_ALERT, "Fatal: Could not set up signal handlers: %s", strerror(errno)); + exit(1); + } - /* Protokoll- und Server-Identifikation erzeugen. Die vom ngIRCd - * beim PASS-Befehl verwendete Syntax sowie die erweiterten Flags - * sind in doc/Protocol.txt beschrieben. */ + /* + * create protocol and server identification. + * The syntax used by ngIRCd in PASS commands and the extended flags + * are described in doc/Protocol.txt + */ #ifdef IRCPLUS snprintf( NGIRCd_ProtoID, sizeof NGIRCd_ProtoID, "%s%s %s|%s:%s", PROTOVER, PROTOIRCPLUS, PACKAGE_NAME, PACKAGE_VERSION, IRCPLUSFLAGS ); #ifdef ZLIB @@ -303,12 +313,10 @@ main( int argc, const char *argv[] ) #ifdef ZLIB strlcat( NGIRCd_ProtoID, "Z", sizeof NGIRCd_ProtoID ); #endif - Log( LOG_DEBUG, "Protocol and server ID is \"%s\".", NGIRCd_ProtoID ); + LogDebug("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!" ); @@ -352,55 +360,55 @@ Fill_Version( void ) #ifdef ZLIB if( NGIRCd_VersionAddition[0] ) strlcat( NGIRCd_VersionAddition, "+", sizeof NGIRCd_VersionAddition ); - strlcat( NGIRCd_VersionAddition, "ZLIB", sizeof NGIRCd_VersionAddition ); #endif +#ifdef SSL_SUPPORT + if ( NGIRCd_VersionAddition[0] ) strlcat( NGIRCd_VersionAddition, "+", sizeof NGIRCd_VersionAddition ); + strlcat( NGIRCd_VersionAddition, "SSL", 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 PAM + if (NGIRCd_VersionAddition[0]) + strlcat(NGIRCd_VersionAddition, "+", sizeof NGIRCd_VersionAddition); + strlcat(NGIRCd_VersionAddition, "PAM", 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 #ifdef WANT_IPV6 if (NGIRCd_VersionAddition[0]) strlcat(NGIRCd_VersionAddition, "+", sizeof(NGIRCd_VersionAddition)); - strlcat(NGIRCd_VersionAddition, "IPv6", sizeof(NGIRCd_VersionAddition)); #endif if( NGIRCd_VersionAddition[0] ) @@ -412,142 +420,9 @@ Fill_Version( void ) 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]; - unsigned old_nicklen; - - Log( LOG_NOTICE|LOG_snotice, "Re-reading configuration NOW!" ); - NGIRCd_SignalRehash = false; - - /* Close down all listening sockets */ - Conn_ExitListeners( ); - - /* Remember old server name and nick name length */ - strlcpy( old_name, Conf_ServerName, sizeof old_name ); - old_nicklen = Conf_MaxNickLength; - - /* Re-read configuration ... */ - Conf_Rehash( ); - - /* Recover old server name and nick name length: these values 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."); - } - if (old_nicklen != Conf_MaxNickLength) { - Conf_MaxNickLength = old_nicklen; - Log(LOG_ERR, "Can't change \"MaxNickLength\" on runtime! Ignored new value."); - } - - /* 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 */ + snprintf(NGIRCd_Version, sizeof NGIRCd_Version, "%s %s-%s", + PACKAGE_NAME, PACKAGE_VERSION, NGIRCd_VersionAddition); + } /* Fill_Version */ /** @@ -557,7 +432,7 @@ static void Show_Version( void ) { puts( NGIRCd_Version ); - puts( "Copyright (c)2001-2007 Alexander Barton () and Contributors." ); + puts( "Copyright (c)2001-2011 Alexander Barton () and Contributors." ); 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." ); @@ -582,8 +457,8 @@ Show_Help( void ) 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" ); + puts( " -V, --version output version information and exit" ); + puts( " -h, --help display this help and exit" ); } /* Show_Help */ @@ -647,27 +522,16 @@ Pidfile_Create(pid_t pid) * Redirect stdin, stdout and stderr to apropriate file handles. */ static void -Setup_FDStreams( void ) +Setup_FDStreams(int fd) { - 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)); + if (fd < 0) 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 */ @@ -676,6 +540,19 @@ NGIRCd_getNobodyID(uid_t *uid, gid_t *gid ) { struct passwd *pwd; +#ifdef __CYGWIN__ + /* Cygwin kludge. + * It can return EINVAL instead of EPERM + * so, if we are already unprivileged, + * use id of current user. + */ + if (geteuid() && getuid()) { + *uid = getuid(); + *gid = getgid(); + return true; + } +#endif + pwd = getpwnam("nobody"); if (!pwd) return false; @@ -697,24 +574,34 @@ NGIRCd_Init( bool NGIRCd_NoDaemon ) bool chrooted = false; struct passwd *pwd; struct group *grp; - int real_errno; + int real_errno, fd = -1; pid_t pid; if (initialized) return true; + if (!NGIRCd_NoDaemon) { + /* open /dev/null before chroot() */ + fd = open( "/dev/null", O_RDWR); + if (fd < 0) + Log(LOG_WARNING, "Could not open /dev/null: %s", strerror(errno)); + } + + if (!ConnSSL_InitLibrary()) + Log(LOG_WARNING, + "Warning: Error during SSL initialization, continuing ..."); + 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; + goto out; } 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; + goto out; } } else { chrooted = true; @@ -728,7 +615,7 @@ NGIRCd_Init( bool NGIRCd_NoDaemon ) 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; + goto out; } } @@ -738,7 +625,7 @@ NGIRCd_Init( bool NGIRCd_NoDaemon ) real_errno = errno; Log( LOG_ERR, "Can't change group ID to %u: %s", Conf_GID, strerror( errno )); if (real_errno != EPERM) - return false; + goto out; } } @@ -748,7 +635,7 @@ NGIRCd_Init( bool NGIRCd_NoDaemon ) real_errno = errno; Log(LOG_ERR, "Can't change user ID to %u: %s", Conf_UID, strerror(errno)); if (real_errno != EPERM) - return false; + goto out; } } @@ -771,11 +658,21 @@ NGIRCd_Init( bool NGIRCd_NoDaemon ) } /* New child process */ +#ifndef NeXT (void)setsid( ); - chdir( "/" ); +#else + setpgrp(0, getpid()); +#endif + if (chdir( "/" ) != 0) + Log(LOG_ERR, "Can't change directory to '/': %s", + strerror(errno)); /* Detach stdin, stdout and stderr */ - Setup_FDStreams( ); + Setup_FDStreams(fd); + if (fd > 2) { + close(fd); + fd = -1; + } } pid = getpid(); @@ -789,21 +686,21 @@ NGIRCd_Init( bool NGIRCd_NoDaemon ) 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); + Log(LOG_INFO, "Running as user %s(%ld), group %s(%ld), with PID %ld.", + pwd ? pwd->pw_name : "unknown", (long)Conf_UID, + grp ? grp->gr_name : "unknown", (long)Conf_GID, (long)pid); - if ( chrooted ) { - Log( LOG_INFO, "Running chrooted, chrootdir \"%s\".", Conf_Chroot ); + if (chrooted) { + Log(LOG_INFO, "Running with root directory \"%s\".", + Conf_Chroot ); return true; - } else { - Log( LOG_INFO, "Not running chrooted." ); - } + } else + Log(LOG_INFO, "Not running with changed root directory."); /* 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 (pwd) { if (!NGIRCd_NoDaemon ) { if( chdir( pwd->pw_dir ) == 0 ) Log( LOG_DEBUG, "Changed working directory to \"%s\" ...", pwd->pw_dir ); @@ -815,7 +712,12 @@ NGIRCd_Init( bool NGIRCd_NoDaemon ) Log( LOG_ERR, "Can't get user informaton for UID %d!?", Conf_UID ); } -return true; + return true; + out: + if (fd > 2) + close(fd); + return false; } + /* -eof- */