/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2010 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
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
-#include <sys/wait.h>
#include <fcntl.h>
#include <pwd.h>
#include <grp.h>
#endif
#include "defines.h"
-#include "resolve.h"
#include "conn.h"
#include "conf-ssl.h"
-#include "client.h"
#include "channel.h"
#include "conf.h"
#include "lists.h"
#include "log.h"
#include "parse.h"
+#include "sighandlers.h"
+#include "io.h"
#include "irc.h"
#ifdef ZEROCONF
#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 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,
umask( 0077 );
- NGIRCd_SignalQuit = NGIRCd_SignalRestart = NGIRCd_SignalRehash = false;
+ NGIRCd_SignalQuit = NGIRCd_SignalRestart = false;
NGIRCd_Passive = false;
#ifdef DEBUG
NGIRCd_Debug = false;
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;
#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);
+ }
- Initialize_Signal_Handler( );
+ if (!Signals_Init()) {
+ Log(LOG_ALERT, "Fatal: Could not set up signal handlers: %s", strerror(errno));
+ exit(1);
+ }
/*
* create protocol and server identification.
#ifdef ZLIB
if( NGIRCd_VersionAddition[0] )
strlcat( NGIRCd_VersionAddition, "+", sizeof NGIRCd_VersionAddition );
-
strlcat( NGIRCd_VersionAddition, "ZLIB", sizeof NGIRCd_VersionAddition );
#endif
#ifdef SSL_SUPPORT
#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] )
} /* 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;
-
- /* Remember old server name and nick name length */
- strlcpy( old_name, Conf_ServerName, sizeof old_name );
- old_nicklen = Conf_MaxNickLength;
-
- /* Re-read configuration ... */
- if (!Conf_Rehash( ))
- return;
-
- /* Close down all listening sockets */
- Conn_ExitListeners( );
-
- /* 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( );
-
- if (!ConnSSL_InitLibrary())
- Log(LOG_WARNING, "Re-Initializing SSL failed, using old keys");
-
- /* 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 )
-{
-#ifdef HAVE_SIGACTION
- struct sigaction saction;
-
- 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
-
- sigaction(SIGINT, &saction, NULL);
- sigaction(SIGQUIT, &saction, NULL);
- sigaction(SIGTERM, &saction, NULL);
- sigaction(SIGHUP, &saction, NULL);
- sigaction(SIGCHLD, &saction, NULL);
-
- /* we handle write errors properly; ignore SIGPIPE */
- saction.sa_handler = SIG_IGN;
- sigaction(SIGPIPE, &saction, NULL);
-#else
- signal(SIGINT, Signal_Handler);
- signal(SIGQUIT, Signal_Handler);
- signal(SIGTERM, Signal_Handler);
- signal(SIGHUP, Signal_Handler);
- signal(SIGCHLD, Signal_Handler);
-
- 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:
- /* shut down sever */
- NGIRCd_SignalQuit = true;
- break;
- case SIGHUP:
- /* re-read configuration */
- NGIRCd_SignalRehash = true;
- break;
- case SIGCHLD:
- /* child-process exited, avoid zombies */
- 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.
*/
Show_Version( void )
{
puts( NGIRCd_Version );
- puts( "Copyright (c)2001-201
0 Alexander Barton (<alex@barton.de>) and Contributors." );
+ puts( "Copyright (c)2001-201
1 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." );
* 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 */
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;
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;
}
}
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;
}
}
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;
}
}
strerror(errno));
/* Detach stdin, stdout and stderr */
- Setup_FDStreams( );
+ Setup_FDStreams(fd);
+ if (fd > 2) {
+ close(fd);
+ fd = -1;
+ }
}
pid = getpid();
/* 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 );
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- */
projects / ngircd-alex.git / blobdiff