New configuration variable "PidFile", section "[Global]": if defined,

[ngircd-alex.git] / src / ngircd / ngircd.c

diff --git a/src/ngircd/ngircd.c b/src/ngircd/ngircd.c
index 8ced6e3f8903c8698e2aa505c8c558a15798b539..89b2f7f8b0362406c0bbb2909bb77a52bc389f4a 100644 (file)
--- a/src/ngircd/ngircd.c
+++ b/src/ngircd/ngircd.c
@@ -1,6 +1,6 @@
 /*
  * ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2004 by Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2005 by 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
@@ -14,7 +14,7 @@
 
 #include "portab.h"
 
-static char UNUSED id[] = "$Id: ngircd.c,v 1.84 2004/05/07 11:19:21 alex Exp $";
+static char UNUSED id[] = "$Id: ngircd.c,v 1.88 2005/02/04 14:24:21 alex Exp $";
 
 #include "imp.h"
 #include <assert.h>
@@ -31,13 +31,13 @@ static char UNUSED id[] = "$Id: ngircd.c,v 1.84 2004/05/07 11:19:21 alex Exp $";
 #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 "defines.h"
 #include "lists.h"
 #include "log.h"
 #include "parse.h"
@@ -57,6 +57,9 @@ LOCAL VOID Signal_Handler PARAMS(( INT Signal ));
 LOCAL VOID Show_Version PARAMS(( VOID ));
 LOCAL VOID Show_Help PARAMS(( VOID ));
 
+LOCAL VOID Pidfile_Create PARAMS(( LONG ));
+LOCAL VOID Pidfile_Delete PARAMS(( VOID ));
+
 
 GLOBAL int
 main( int argc, const char *argv[] )
@@ -285,6 +288,29 @@ main( int argc, const char *argv[] )
                        chdir( "/" );
                }
 
+               /* Create PID file */
+               pid = (LONG) getpid( );
+               Pidfile_Create( pid );
+
+               /* Show user, group, and PID of the running daemon */
+               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( ), pid);
+
+               /* Change working directory to home directory of the user
+                * we are running as (when not running chroot()'ed!) */
+               if( Conf_UID != 0 && ! Conf_Chroot[0] )
+               {
+                       struct passwd *pwd;
+
+                       pwd = getpwuid( Conf_UID );
+                       if( pwd != NULL )
+                       {
+                               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 );
+               }
+
                /* Initialize modules, part II: these functions are eventually
                 * called with already dropped privileges ... */
                Resolve_Init( );
@@ -296,10 +322,6 @@ main( int argc, const char *argv[] )
 #endif
                Conn_Init( );
 
-               /* Show user, group, and PID of the running daemon */
-               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( ));
-
                /* Redirect stderr handle to "error file" for debugging.
                 * But don't try to write in the chroot jail, since it's more 
                 * secure to have a chroot dir not writable by the daemon.
@@ -335,6 +357,7 @@ main( int argc, const char *argv[] )
                {
                        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 );
                }
                
@@ -350,6 +373,8 @@ main( int argc, const char *argv[] )
                Channel_Exit( );
                Lists_Exit( );
                Log_Exit( );
+
+               Pidfile_Delete( );
        }
 
        return 0;
@@ -545,7 +570,7 @@ LOCAL VOID
 Show_Version( VOID )
 {
        puts( NGIRCd_Version( ));
-       puts( "Copyright (c)2001-2004 by Alexander Barton (<alex@barton.de>)." );
+       puts( "Copyright (c)2001-2005 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." );
@@ -570,4 +595,47 @@ Show_Help( VOID )
 } /* Show_Help */
 
 
+LOCAL 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 */
+
+
+LOCAL VOID
+Pidfile_Create( LONG pid )
+{
+       FILE *pidf;
+
+       /* Pidfile configured? */
+       if( ! Conf_PidFile[0] ) return;
+
+       pidf = fopen( Conf_PidFile, "w" );
+
+#ifdef DEBUG
+       Log( LOG_DEBUG, "Creating PID file (%s) ...", Conf_PidFile );
+#endif
+
+       if( ! pidf )
+       {
+               Log( LOG_ERR, "Error writing PID file (%s): %s", Conf_PidFile, strerror( errno ));
+               return;
+       }
+
+       if( fprintf( pidf, "%ld\n", pid ) < 0 )
+               Log( LOG_ERR, "Can't write PID file (%s): %s", Conf_PidFile, strerror( errno ));
+
+       if( fclose(pidf) != 0 )
+               Log( LOG_ERR, "Error closing PID file (%s): %s", Conf_PidFile, strerror( errno ));
+} /* Pidfile_Create */
+
+
 /* -eof- */