]> arthur.barton.de Git - ngircd-alex.git/blobdiff - src/ngircd/conf.c
Fixed spelling mistake :-)
[ngircd-alex.git] / src / ngircd / conf.c
index bd8b5eeb8d674636807e7d958cea9c1fcb364ad4..9d6071e1e5c165c90a535b42450329a754e0dab3 100644 (file)
@@ -1,22 +1,21 @@
 /*
  * ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
+ * Copyright (c)2001,2002 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 ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
+ * 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.
  *
- * $Id: conf.c,v 1.29 2002/09/16 09:13:06 alex Exp $
- *
- * conf.h: Konfiguration des ngircd
+ * Configuration management (reading, parsing & validation)
  */
 
 
 #include "portab.h"
 
+static char UNUSED id[] = "$Id: conf.c,v 1.56 2003/04/20 23:09:43 alex Exp $";
+
 #include "imp.h"
 #include <assert.h>
 #include <errno.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <pwd.h>
+#include <grp.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#ifdef HAVE_CTYPE_H
+# include <ctype.h>
+#endif
 
 #include "ngircd.h"
 #include "conn.h"
 
 
 LOCAL BOOLEAN Use_Log = TRUE;
+LOCAL CONF_SERVER New_Server;
+LOCAL INT New_Server_Idx;
 
 
-LOCAL VOID Set_Defaults PARAMS(( VOID ));
+LOCAL VOID Set_Defaults PARAMS(( BOOLEAN InitServers ));
 LOCAL VOID Read_Config PARAMS(( VOID ));
-LOCAL VOID Validate_Config PARAMS(( VOID ));
+LOCAL VOID Validate_Config PARAMS(( BOOLEAN TestOnly ));
 
 LOCAL VOID Handle_GLOBAL PARAMS(( INT Line, CHAR *Var, CHAR *Arg ));
 LOCAL VOID Handle_OPERATOR PARAMS(( INT Line, CHAR *Var, CHAR *Arg ));
@@ -52,30 +61,43 @@ LOCAL VOID Handle_CHANNEL PARAMS(( INT Line, CHAR *Var, CHAR *Arg ));
 
 LOCAL VOID Config_Error PARAMS(( CONST INT Level, CONST CHAR *Format, ... ));
 
+LOCAL VOID Init_Server_Struct PARAMS(( CONF_SERVER *Server ));
+
 
 GLOBAL VOID
 Conf_Init( VOID )
 {
-       Set_Defaults( );
+       Set_Defaults( TRUE );
        Read_Config( );
-       Validate_Config( );
+       Validate_Config( FALSE );
 } /* Config_Init */
 
 
+GLOBAL VOID
+Conf_Rehash( VOID )
+{
+       Set_Defaults( FALSE );
+       Read_Config( );
+       Validate_Config( FALSE );
+} /* Config_Rehash */
+
+
 GLOBAL INT
 Conf_Test( VOID )
 {
-       /* Konfiguration einlesen, ueberpruefen und ausgeben. */
+       /* Read configuration, validate and output it. */
 
-       UINT i;
+       struct passwd *pwd;
+       struct group *grp;
+       INT i;
 
        Use_Log = FALSE;
-       Set_Defaults( );
+       Set_Defaults( TRUE );
 
-       printf( "Using \"%s\" as configuration file ...\n", NGIRCd_ConfFile );
        Read_Config( );
+       Validate_Config( TRUE );
 
-       /* Wenn stdin ein ein TTY ist: auf Taste warten */
+       /* If stdin is a valid tty wait for a key: */
        if( isatty( fileno( stdout )))
        {
                puts( "OK, press enter to see a dump of your service configuration ..." );
@@ -91,43 +113,51 @@ Conf_Test( VOID )
        printf( "  AdminInfo2 = %s\n", Conf_ServerAdmin2 );
        printf( "  AdminEMail = %s\n", Conf_ServerAdminMail );
        printf( "  MotdFile = %s\n", Conf_MotdFile );
-       printf( "  ListenPorts = " );
+       printf( "  Ports = " );
        for( i = 0; i < Conf_ListenPorts_Count; i++ )
        {
                if( i != 0 ) printf( ", " );
                printf( "%u", Conf_ListenPorts[i] );
        }
        puts( "" );
-       printf( "  ServerUID = %ld\n", (INT32)Conf_UID );
-       printf( "  ServerGID = %ld\n", (INT32)Conf_GID );
+       pwd = getpwuid( Conf_UID );
+       if( pwd ) printf( "  ServerUID = %s\n", pwd->pw_name );
+       else printf( "  ServerUID = %ld\n", (LONG)Conf_UID );
+       grp = getgrgid( Conf_GID );
+       if( grp ) printf( "  ServerGID = %s\n", grp->gr_name );
+       else printf( "  ServerGID = %ld\n", (LONG)Conf_GID );
        printf( "  PingTimeout = %d\n", Conf_PingTimeout );
        printf( "  PongTimeout = %d\n", Conf_PongTimeout );
        printf( "  ConnectRetry = %d\n", Conf_ConnectRetry );
        printf( "  OperCanUseMode = %s\n", Conf_OperCanMode == TRUE ? "yes" : "no" );
+       if( Conf_MaxConnections > 0 ) printf( "  MaxConnections = %ld\n", Conf_MaxConnections );
+       else printf( "  MaxConnections = -1\n" );
+       if( Conf_MaxJoins > 0 ) printf( "  MaxJoins = %d\n", Conf_MaxJoins );
+       else printf( "  MaxJoins = -1\n" );
        puts( "" );
 
        for( i = 0; i < Conf_Oper_Count; i++ )
        {
                if( ! Conf_Oper[i].name[0] ) continue;
                
-               /* gueltiger Operator-Block: ausgeben */
+               /* Valid "Operator" section */
                puts( "[OPERATOR]" );
                printf( "  Name = %s\n", Conf_Oper[i].name );
                printf( "  Password = %s\n", Conf_Oper[i].pwd );
                puts( "" );
        }
 
-       for( i = 0; i < Conf_Server_Count; i++ )
+       for( i = 0; i < MAX_SERVERS; i++ )
        {
                if( ! Conf_Server[i].name[0] ) continue;
-               if( ! Conf_Server[i].host[0] ) continue;
                
-               /* gueltiger Server-Block: ausgeben */
+               /* Valid "Server" section */
                puts( "[SERVER]" );
                printf( "  Name = %s\n", Conf_Server[i].name );
                printf( "  Host = %s\n", Conf_Server[i].host );
                printf( "  Port = %d\n", Conf_Server[i].port );
-               printf( "  Password = %s\n", Conf_Server[i].pwd );
+               printf( "  MyPassword = %s\n", Conf_Server[i].pwd_in );
+               printf( "  PeerPassword = %s\n", Conf_Server[i].pwd_out );
                printf( "  Group = %d\n", Conf_Server[i].group );
                puts( "" );
        }
@@ -136,7 +166,7 @@ Conf_Test( VOID )
        {
                if( ! Conf_Channel[i].name[0] ) continue;
                
-               /* gueltiger Channel-Block: ausgeben */
+               /* Valid "Channel" section */
                puts( "[CHANNEL]" );
                printf( "  Name = %s\n", Conf_Channel[i].name );
                printf( "  Modes = %s\n", Conf_Channel[i].modes );
@@ -148,20 +178,166 @@ Conf_Test( VOID )
 } /* Conf_Test */
 
 
+GLOBAL VOID
+Conf_UnsetServer( CONN_ID Idx )
+{
+       /* Set next time for next connection attempt, if this is a server
+        * link that is (still) configured here. If the server is set as
+        * "once", delete it from our configuration.
+        * Non-Server-Connections will be silently ignored. */
+
+       INT i;
+
+       /* Check all our configured servers */
+       for( i = 0; i < MAX_SERVERS; i++ )
+       {
+               if( Conf_Server[i].conn_id != Idx ) continue;
+
+               /* Gotcha! Mark server configuration as "unused": */
+               Conf_Server[i].conn_id = NONE;
+
+               if( Conf_Server[i].flags & CONF_SFLAG_ONCE )
+               {
+                       /* Delete configuration here */
+                       Init_Server_Struct( &Conf_Server[i] );
+               }
+               else
+               {
+                       /* Set time for next connect attempt */
+                       if( Conf_Server[i].lasttry <  time( NULL ) - Conf_ConnectRetry )
+                       {
+                               /* Okay, the connection was established "long enough": */
+                               Conf_Server[i].lasttry = time( NULL ) - Conf_ConnectRetry + RECONNECT_DELAY;
+                       }
+               }
+       }
+} /* Conf_UnsetServer */
+
+
+GLOBAL VOID
+Conf_SetServer( INT ConfServer, CONN_ID Idx )
+{
+       /* Set connection for specified configured server */
+
+       assert( ConfServer > NONE );
+       assert( Idx > NONE );
+
+       Conf_Server[ConfServer].conn_id = Idx;
+} /* Conf_SetServer */
+
+
+GLOBAL INT
+Conf_GetServer( CONN_ID Idx )
+{
+       /* Get index of server in configuration structure */
+
+       INT i;
+
+       assert( Idx > NONE );
+
+       for( i = 0; i < MAX_SERVERS; i++ )
+       {
+               if( Conf_Server[i].conn_id == Idx ) return i;
+       }
+       return NONE;
+} /* Conf_GetServer */
+
+
+GLOBAL BOOLEAN
+Conf_EnableServer( CHAR *Name, INT Port )
+{
+       /* Enable specified server and adjust port */
+
+       INT i;
+
+       assert( Name != NULL );
+
+       for( i = 0; i < MAX_SERVERS; i++ )
+       {
+               if( strcasecmp( Conf_Server[i].name, Name ) == 0 )
+               {
+                       /* Gotcha! Set port and enable server: */
+                       Conf_Server[i].port = Port;
+                       Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
+                       return TRUE;
+               }
+       }
+       return FALSE;
+} /* Conf_EnableServer */
+
+
+GLOBAL BOOLEAN
+Conf_DisableServer( CHAR *Name )
+{
+       /* Enable specified server and adjust port */
+
+       INT i;
+
+       assert( Name != NULL );
+
+       for( i = 0; i < MAX_SERVERS; i++ )
+       {
+               if( strcasecmp( Conf_Server[i].name, Name ) == 0 )
+               {
+                       /* Gotcha! Disable and disconnect server: */
+                       Conf_Server[i].flags |= CONF_SFLAG_DISABLED;
+                       if( Conf_Server[i].conn_id > NONE ) Conn_Close( Conf_Server[i].conn_id, NULL, "Server link terminated on operator request", TRUE );
+                       return TRUE;
+               }
+       }
+       return FALSE;
+} /* Conf_DisableServer */
+
+
+GLOBAL BOOLEAN
+Conf_AddServer( CHAR *Name, INT Port, CHAR *Host, CHAR *MyPwd, CHAR *PeerPwd )
+{
+       /* Add new server to configuration */
+
+       INT i;
+
+       assert( Name != NULL );
+       assert( Host != NULL );
+       assert( MyPwd != NULL );
+       assert( PeerPwd != NULL );
+
+       /* Search unused item in server configuration structure */
+       for( i = 0; i < MAX_SERVERS; i++ )
+       {
+               /* Is this item used? */
+               if( ! Conf_Server[i].name[0] ) break;
+       }
+       if( i >= MAX_SERVERS ) return FALSE;
+
+       Init_Server_Struct( &Conf_Server[i] );
+       strlcpy( Conf_Server[i].name, Name, sizeof( Conf_Server[i].name ));
+       strlcpy( Conf_Server[i].host, Host, sizeof( Conf_Server[i].host ));
+       strlcpy( Conf_Server[i].pwd_out, MyPwd, sizeof( Conf_Server[i].pwd_out ));
+       strlcpy( Conf_Server[i].pwd_in, PeerPwd, sizeof( Conf_Server[i].pwd_in ));
+       Conf_Server[i].port = Port;
+       Conf_Server[i].flags = CONF_SFLAG_ONCE;
+       
+       return TRUE;
+} /* Conf_AddServer */
+
+
 LOCAL VOID
-Set_Defaults( VOID )
+Set_Defaults( BOOLEAN InitServers )
 {
-       /* Konfigurationsvariablen initialisieren, d.h. auf Default-Werte setzen. */
+       /* Initialize configuration variables with default values. */
+
+       INT i;
 
        strcpy( Conf_ServerName, "" );
-       sprintf( Conf_ServerInfo, "%s %s", PACKAGEVERSION );
+       sprintf( Conf_ServerInfo, "%s %s", PACKAGE_NAME, PACKAGE_VERSION );
        strcpy( Conf_ServerPwd, "" );
 
        strcpy( Conf_ServerAdmin1, "" );
        strcpy( Conf_ServerAdmin2, "" );
        strcpy( Conf_ServerAdminMail, "" );
 
-       strcpy( Conf_MotdFile, MOTD_FILE );
+       strlcpy( Conf_MotdFile, SYSCONFDIR, sizeof( Conf_MotdFile ));
+       strlcat( Conf_MotdFile, MOTD_FILE, sizeof( Conf_MotdFile ));
 
        Conf_ListenPorts_Count = 0;
 
@@ -173,53 +349,101 @@ Set_Defaults( VOID )
        Conf_ConnectRetry = 60;
 
        Conf_Oper_Count = 0;
-       Conf_Server_Count = 0;
        Conf_Channel_Count = 0;
 
        Conf_OperCanMode = FALSE;
+       
+       Conf_MaxConnections = -1;
+       Conf_MaxJoins = 10;
+
+       /* Initialize server configuration structures */
+       if( InitServers ) for( i = 0; i < MAX_SERVERS; Init_Server_Struct( &Conf_Server[i++] ));
 } /* Set_Defaults */
 
 
 LOCAL VOID
 Read_Config( VOID )
 {
-       /* Konfigurationsdatei einlesen. */
+       /* Read configuration file. */
 
        CHAR section[LINE_LEN], str[LINE_LEN], *var, *arg, *ptr;
-       INT line;
+       INT line, i, n;
        FILE *fd;
 
+       /* Open configuration file */
        fd = fopen( NGIRCd_ConfFile, "r" );
        if( ! fd )
        {
-               /* Keine Konfigurationsdatei gefunden */
+               /* No configuration file found! */
                Config_Error( LOG_ALERT, "Can't read configuration \"%s\": %s", NGIRCd_ConfFile, strerror( errno ));
-               Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE );
+               Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
                exit( 1 );
        }
 
+       Config_Error( LOG_INFO, "Reading configuration from \"%s\" ...", NGIRCd_ConfFile );
+
+       /* Clean up server configuration structure: mark all already
+        * configured servers as "once" so that they are deleted
+        * after the next disconnect and delete all unused servers.
+        * And delete all servers which are "duplicates" of servers
+        * that are already marked as "once" (such servers have been
+        * created by the last rehash but are now useless). */
+       for( i = 0; i < MAX_SERVERS; i++ )
+       {
+               if( Conf_Server[i].conn_id == NONE ) Init_Server_Struct( &Conf_Server[i] );
+               else
+               {
+                       /* This structure is in use ... */
+                       if( Conf_Server[i].flags & CONF_SFLAG_ONCE )
+                       {
+                               /* Check for duplicates */
+                               for( n = 0; n < MAX_SERVERS; n++ )
+                               {
+                                       if( n == i ) continue;
+
+                                       if( Conf_Server[i].conn_id == Conf_Server[n].conn_id )
+                                       {
+                                               Init_Server_Struct( &Conf_Server[n] );
+                                               Log( LOG_DEBUG, "Deleted unused duplicate server %d (kept %d).", n, i );
+                                       }
+                               }
+                       }
+                       else
+                       {
+                               /* Mark server as "once" */
+                               Conf_Server[i].flags |= CONF_SFLAG_ONCE;
+                               Log( LOG_DEBUG, "Marked server %d as \"once\"", i );
+                       }
+               }
+       }
+
+       /* Initialize variables */
        line = 0;
        strcpy( section, "" );
+       Init_Server_Struct( &New_Server );
+       New_Server_Idx = NONE;
+
+       /* Read configuration file */
        while( TRUE )
        {
                if( ! fgets( str, LINE_LEN, fd )) break;
                ngt_TrimStr( str );
                line++;
 
-               /* Kommentarzeilen und leere Zeilen ueberspringen */
+               /* Skip comments and empty lines */
                if( str[0] == ';' || str[0] == '#' || str[0] == '\0' ) continue;
 
-               /* Anfang eines Abschnittes? */
+               /* Is this the beginning of a new section? */
                if(( str[0] == '[' ) && ( str[strlen( str ) - 1] == ']' ))
                {
-                       strcpy( section, str );
+                       strlcpy( section, str, sizeof( section ));
                        if( strcasecmp( section, "[GLOBAL]" ) == 0 ) continue;
                        if( strcasecmp( section, "[OPERATOR]" ) == 0 )
                        {
                                if( Conf_Oper_Count + 1 > MAX_OPERATORS ) Config_Error( LOG_ERR, "Too many operators configured." );
                                else
                                {
-                                       /* neuen Operator initialisieren */
+                                       /* Initialize new operator structure */
                                        strcpy( Conf_Oper[Conf_Oper_Count].name, "" );
                                        strcpy( Conf_Oper[Conf_Oper_Count].pwd, "" );
                                        Conf_Oper_Count++;
@@ -228,20 +452,30 @@ Read_Config( VOID )
                        }
                        if( strcasecmp( section, "[SERVER]" ) == 0 )
                        {
-                               if( Conf_Server_Count + 1 > MAX_SERVERS ) Config_Error( LOG_ERR, "Too many servers configured." );
-                               else
+                               /* Check if there is already a server to add */
+                               if( New_Server.name[0] )
+                               {
+                                       /* Copy data to "real" server structure */
+                                       assert( New_Server_Idx > NONE );
+                                       Conf_Server[New_Server_Idx] = New_Server;
+                               }
+
+                               /* Re-init structure for new server */
+                               Init_Server_Struct( &New_Server );
+
+                               /* Search unused item in server configuration structure */
+                               for( i = 0; i < MAX_SERVERS; i++ )
+                               {
+                                       /* Is this item used? */
+                                       if( ! Conf_Server[i].name[0] ) break;
+                               }
+                               if( i >= MAX_SERVERS )
                                {
-                                       /* neuen Server ("Peer") initialisieren */
-                                       strcpy( Conf_Server[Conf_Server_Count].host, "" );
-                                       strcpy( Conf_Server[Conf_Server_Count].ip, "" );
-                                       strcpy( Conf_Server[Conf_Server_Count].name, "" );
-                                       strcpy( Conf_Server[Conf_Server_Count].pwd, "" );
-                                       Conf_Server[Conf_Server_Count].port = 0;
-                                       Conf_Server[Conf_Server_Count].group = -1;
-                                       Conf_Server[Conf_Server_Count].lasttry = time( NULL ) - Conf_ConnectRetry + STARTUP_DELAY;
-                                       Conf_Server[Conf_Server_Count].res_stat = NULL;
-                                       Conf_Server_Count++;
+                                       /* Oops, no free item found! */
+                                       Config_Error( LOG_ERR, "Too many servers configured." );
+                                       New_Server_Idx = NONE;
                                }
+                               else New_Server_Idx = i;
                                continue;
                        }
                        if( strcasecmp( section, "[CHANNEL]" ) == 0 )
@@ -249,7 +483,7 @@ Read_Config( VOID )
                                if( Conf_Channel_Count + 1 > MAX_DEFCHANNELS ) Config_Error( LOG_ERR, "Too many pre-defined channels configured." );
                                else
                                {
-                                       /* neuen vordefinierten Channel initialisieren */
+                                       /* Initialize new channel structure */
                                        strcpy( Conf_Channel[Conf_Channel_Count].name, "" );
                                        strcpy( Conf_Channel[Conf_Channel_Count].modes, "" );
                                        strcpy( Conf_Channel[Conf_Channel_Count].topic, "" );
@@ -262,7 +496,7 @@ Read_Config( VOID )
                }
                if( section[0] == 0x1 ) continue;
 
-               /* In Variable und Argument zerlegen */
+               /* Split line into variable name and parameters */
                ptr = strchr( str, '=' );
                if( ! ptr )
                {
@@ -279,10 +513,19 @@ Read_Config( VOID )
                else if( strcasecmp( section, "[CHANNEL]" ) == 0 ) Handle_CHANNEL( line, var, arg );
                else Config_Error( LOG_ERR, "%s, line %d: Variable \"%s\" outside section!", NGIRCd_ConfFile, line, var );
        }
-       
+
+       /* Close configuration file */
        fclose( fd );
+
+       /* Check if there is still a server to add */
+       if( New_Server.name[0] )
+       {
+               /* Copy data to "real" server structure */
+               assert( New_Server_Idx > NONE );
+               Conf_Server[New_Server_Idx] = New_Server;
+       }
        
-       /* Wenn kein Port definiert wurde, Port 6667 als Default benutzen */
+       /* If there are no ports configured use the default: 6667 */
        if( Conf_ListenPorts_Count < 1 )
        {
                Conf_ListenPorts_Count = 1;
@@ -294,8 +537,10 @@ Read_Config( VOID )
 LOCAL VOID
 Handle_GLOBAL( INT Line, CHAR *Var, CHAR *Arg )
 {
+       struct passwd *pwd;
+       struct group *grp;
        CHAR *ptr;
-       INT32 port;
+       LONG port;
        
        assert( Line > 0 );
        assert( Var != NULL );
@@ -303,50 +548,44 @@ Handle_GLOBAL( INT Line, CHAR *Var, CHAR *Arg )
        
        if( strcasecmp( Var, "Name" ) == 0 )
        {
-               /* Der Server-Name */
-               strncpy( Conf_ServerName, Arg, CLIENT_ID_LEN - 1 );
-               Conf_ServerName[CLIENT_ID_LEN - 1] = '\0';
+               /* Server name */
+               if( strlcpy( Conf_ServerName, Arg, sizeof( Conf_ServerName )) >= sizeof( Conf_ServerName )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Name\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
        if( strcasecmp( Var, "Info" ) == 0 )
        {
-               /* Server-Info-Text */
-               strncpy( Conf_ServerInfo, Arg, CLIENT_INFO_LEN - 1 );
-               Conf_ServerInfo[CLIENT_INFO_LEN - 1] = '\0';
+               /* Info text of server */
+               if( strlcpy( Conf_ServerInfo, Arg, sizeof( Conf_ServerInfo )) >= sizeof( Conf_ServerInfo )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Info\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
        if( strcasecmp( Var, "Password" ) == 0 )
        {
-               /* Server-Passwort */
-               strncpy( Conf_ServerPwd, Arg, CLIENT_PASS_LEN - 1 );
-               Conf_ServerPwd[CLIENT_PASS_LEN - 1] = '\0';
+               /* Global server password */
+               if( strlcpy( Conf_ServerPwd, Arg, sizeof( Conf_ServerPwd )) >= sizeof( Conf_ServerPwd )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Password\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
        if( strcasecmp( Var, "AdminInfo1" ) == 0 )
        {
-               /* Server-Info-Text */
-               strncpy( Conf_ServerAdmin1, Arg, CLIENT_INFO_LEN - 1 );
-               Conf_ServerAdmin1[CLIENT_INFO_LEN - 1] = '\0';
+               /* Administrative info #1 */
+               if( strlcpy( Conf_ServerAdmin1, Arg, sizeof( Conf_ServerAdmin1 )) >= sizeof( Conf_ServerAdmin1 )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"AdminInfo1\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
        if( strcasecmp( Var, "AdminInfo2" ) == 0 )
        {
-               /* Server-Info-Text */
-               strncpy( Conf_ServerAdmin2, Arg, CLIENT_INFO_LEN - 1 );
-               Conf_ServerAdmin2[CLIENT_INFO_LEN - 1] = '\0';
+               /* Administrative info #2 */
+               if( strlcpy( Conf_ServerAdmin2, Arg, sizeof( Conf_ServerAdmin2 )) >= sizeof( Conf_ServerAdmin2 )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"AdminInfo2\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
        if( strcasecmp( Var, "AdminEMail" ) == 0 )
        {
-               /* Server-Info-Text */
-               strncpy( Conf_ServerAdminMail, Arg, CLIENT_INFO_LEN - 1 );
-               Conf_ServerAdminMail[CLIENT_INFO_LEN - 1] = '\0';
+               /* Administrative email contact */
+               if( strlcpy( Conf_ServerAdminMail, Arg, sizeof( Conf_ServerAdminMail )) >= sizeof( Conf_ServerAdminMail )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"AdminEMail\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
        if( strcasecmp( Var, "Ports" ) == 0 )
        {
-               /* Ports, durch "," getrennt, auf denen der Server
-               * Verbindungen annehmen soll */
+               /* Ports on that the server should listen. More port numbers
+                * must be separated by "," */
                ptr = strtok( Arg, "," );
                while( ptr )
                {
@@ -364,54 +603,103 @@ Handle_GLOBAL( INT Line, CHAR *Var, CHAR *Arg )
        }
        if( strcasecmp( Var, "MotdFile" ) == 0 )
        {
-               /* Datei mit der "message of the day" (MOTD) */
-               strncpy( Conf_MotdFile, Arg, FNAME_LEN - 1 );
-               Conf_MotdFile[FNAME_LEN - 1] = '\0';
+               /* "Message of the day" (MOTD) file */
+               if( strlcpy( Conf_MotdFile, Arg, sizeof( Conf_MotdFile )) >= sizeof( Conf_MotdFile )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"MotdFile\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
        if( strcasecmp( Var, "ServerUID" ) == 0 )
        {
-               /* UID, mit der der Daemon laufen soll */
-               Conf_UID = (UINT)atoi( Arg );
+               /* UID the daemon should switch to */
+               pwd = getpwnam( Arg );
+               if( pwd ) Conf_UID = pwd->pw_uid;
+               else
+               {
+#ifdef HAVE_ISDIGIT
+                       if( ! isdigit( *Arg )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"ServerUID\" is not a number!", NGIRCd_ConfFile, Line );
+                       else
+#endif
+                       Conf_UID = (UINT)atoi( Arg );
+               }
                return;
        }
        if( strcasecmp( Var, "ServerGID" ) == 0 )
        {
-               /* GID, mit der der Daemon laufen soll */
-               Conf_GID = (UINT)atoi( Arg );
+               /* GID the daemon should use */
+               grp = getgrnam( Arg );
+               if( grp ) Conf_GID = grp->gr_gid;
+               else
+               {
+#ifdef HAVE_ISDIGIT
+                       if( ! isdigit( *Arg )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"ServerGID\" is not a number!", NGIRCd_ConfFile, Line );
+                       else
+#endif
+                       Conf_GID = (UINT)atoi( Arg );
+               }
                return;
        }
        if( strcasecmp( Var, "PingTimeout" ) == 0 )
        {
-               /* PING-Timeout */
+               /* PING timeout */
                Conf_PingTimeout = atoi( Arg );
-               if(( Conf_PingTimeout ) < 5 ) Conf_PingTimeout = 5;
+               if( Conf_PingTimeout < 5 )
+               {
+                       Config_Error( LOG_WARNING, "%s, line %d: Value of \"PingTimeout\" too low!", NGIRCd_ConfFile, Line );
+                       Conf_PingTimeout = 5;
+               }
                return;
        }
        if( strcasecmp( Var, "PongTimeout" ) == 0 )
        {
-               /* PONG-Timeout */
+               /* PONG timeout */
                Conf_PongTimeout = atoi( Arg );
-               if(( Conf_PongTimeout ) < 5 ) Conf_PongTimeout = 5;
+               if( Conf_PongTimeout < 5 )
+               {
+                       Config_Error( LOG_WARNING, "%s, line %d: Value of \"PongTimeout\" too low!", NGIRCd_ConfFile, Line );
+                       Conf_PongTimeout = 5;
+               }
                return;
        }
        if( strcasecmp( Var, "ConnectRetry" ) == 0 )
        {
-               /* Sekunden zwischen Verbindungsversuchen zu anderen Servern */
+               /* Seconds between connection attempts to other servers */
                Conf_ConnectRetry = atoi( Arg );
-               if(( Conf_ConnectRetry ) < 5 ) Conf_ConnectRetry = 5;
+               if( Conf_ConnectRetry < 5 )
+               {
+                       Config_Error( LOG_WARNING, "%s, line %d: Value of \"ConnectRetry\" too low!", NGIRCd_ConfFile, Line );
+                       Conf_ConnectRetry = 5;
+               }
                return;
        }
        if( strcasecmp( Var, "OperCanUseMode" ) == 0 )
        {
-               /* Koennen IRC-Operatoren immer MODE benutzen? */
+               /* Are IRC operators allowed to use MODE in channels they aren't Op in? */
                if( strcasecmp( Arg, "yes" ) == 0 ) Conf_OperCanMode = TRUE;
                else if( strcasecmp( Arg, "true" ) == 0 ) Conf_OperCanMode = TRUE;
                else if( atoi( Arg ) != 0 ) Conf_OperCanMode = TRUE;
                else Conf_OperCanMode = FALSE;
                return;
        }
-               
+       if( strcasecmp( Var, "MaxConnections" ) == 0 )
+       {
+               /* Maximum number of connections. Values <= 0 are equal to "no limit". */
+#ifdef HAVE_ISDIGIT
+               if( ! isdigit( *Arg )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"MaxConnections\" is not a number!", NGIRCd_ConfFile, Line );
+               else
+#endif
+               Conf_MaxConnections = atol( Arg );
+               return;
+       }
+       if( strcasecmp( Var, "MaxJoins" ) == 0 )
+       {
+               /* Maximum number of channels a user can join. Values <= 0 are equal to "no limit". */
+#ifdef HAVE_ISDIGIT
+               if( ! isdigit( *Arg )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"MaxJoins\" is not a number!", NGIRCd_ConfFile, Line );
+               else
+#endif
+               Conf_MaxJoins = atoi( Arg );
+               return;
+       }
+
        Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Unknown variable \"%s\"!", NGIRCd_ConfFile, Line, Var );
 } /* Handle_GLOBAL */
 
@@ -426,16 +714,14 @@ Handle_OPERATOR( INT Line, CHAR *Var, CHAR *Arg )
 
        if( strcasecmp( Var, "Name" ) == 0 )
        {
-               /* Name des IRC Operator */
-               strncpy( Conf_Oper[Conf_Oper_Count - 1].name, Arg, CLIENT_PASS_LEN - 1 );
-               Conf_Oper[Conf_Oper_Count - 1].name[CLIENT_PASS_LEN - 1] = '\0';
+               /* Name of IRC operator */
+               if( strlcpy( Conf_Oper[Conf_Oper_Count - 1].name, Arg, sizeof( Conf_Oper[Conf_Oper_Count - 1].name )) >= sizeof( Conf_Oper[Conf_Oper_Count - 1].name )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Name\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
        if( strcasecmp( Var, "Password" ) == 0 )
        {
-               /* Passwort des IRC Operator */
-               strncpy( Conf_Oper[Conf_Oper_Count - 1].pwd, Arg, CLIENT_PASS_LEN - 1 );
-               Conf_Oper[Conf_Oper_Count - 1].pwd[CLIENT_PASS_LEN - 1] = '\0';
+               /* Password of IRC operator */
+               if( strlcpy( Conf_Oper[Conf_Oper_Count - 1].pwd, Arg, sizeof( Conf_Oper[Conf_Oper_Count - 1].pwd )) >= sizeof( Conf_Oper[Conf_Oper_Count - 1].pwd )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Password\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
        
@@ -446,45 +732,55 @@ Handle_OPERATOR( INT Line, CHAR *Var, CHAR *Arg )
 LOCAL VOID
 Handle_SERVER( INT Line, CHAR *Var, CHAR *Arg )
 {
-       INT32 port;
+       LONG port;
        
        assert( Line > 0 );
        assert( Var != NULL );
        assert( Arg != NULL );
 
+       /* Ignore server block if no space is left in server configuration structure */
+       if( New_Server_Idx <= NONE ) return;
+
        if( strcasecmp( Var, "Host" ) == 0 )
        {
-               /* Hostname des Servers */
-               strncpy( Conf_Server[Conf_Server_Count - 1].host, Arg, HOST_LEN - 1 );
-               Conf_Server[Conf_Server_Count - 1].host[HOST_LEN - 1] = '\0';
+               /* Hostname of the server */
+               if( strlcpy( New_Server.host, Arg, sizeof( New_Server.host )) >= sizeof( New_Server.host )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Host\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
        if( strcasecmp( Var, "Name" ) == 0 )
        {
-               /* Name des Servers ("Nick") */
-               strncpy( Conf_Server[Conf_Server_Count - 1].name, Arg, CLIENT_ID_LEN - 1 );
-               Conf_Server[Conf_Server_Count - 1].name[CLIENT_ID_LEN - 1] = '\0';
+               /* Name of the server ("Nick"/"ID") */
+               if( strlcpy( New_Server.name, Arg, sizeof( New_Server.name )) >= sizeof( New_Server.name )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Name\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
-       if( strcasecmp( Var, "Password" ) == 0 )
+       if( strcasecmp( Var, "MyPassword" ) == 0 )
+       {
+               /* Password of this server which is sent to the peer */
+               if( strlcpy( New_Server.pwd_in, Arg, sizeof( New_Server.pwd_in )) >= sizeof( New_Server.pwd_in )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"MyPassword\" too long!", NGIRCd_ConfFile, Line );
+               return;
+       }
+       if( strcasecmp( Var, "PeerPassword" ) == 0 )
        {
-               /* Passwort des Servers */
-               strncpy( Conf_Server[Conf_Server_Count - 1].pwd, Arg, CLIENT_PASS_LEN - 1 );
-               Conf_Server[Conf_Server_Count - 1].pwd[CLIENT_PASS_LEN - 1] = '\0';
+               /* Passwort of the peer which must be received */
+               if( strlcpy( New_Server.pwd_out, Arg, sizeof( New_Server.pwd_out )) >= sizeof( New_Server.pwd_out )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"PeerPassword\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
        if( strcasecmp( Var, "Port" ) == 0 )
        {
-               /* Port, zu dem Verbunden werden soll */
+               /* Port to which this server should connect */
                port = atol( Arg );
-               if( port > 0 && port < 0xFFFF ) Conf_Server[Conf_Server_Count - 1].port = (INT)port;
+               if( port > 0 && port < 0xFFFF ) New_Server.port = (INT)port;
                else Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Illegal port number %ld!", NGIRCd_ConfFile, Line, port );
                return;
        }
        if( strcasecmp( Var, "Group" ) == 0 )
        {
-               /* Server-Gruppe */
-               Conf_Server[Conf_Server_Count - 1].group = atoi( Arg );
+               /* Server group */
+#ifdef HAVE_ISDIGIT
+               if( ! isdigit( *Arg )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Group\" is not a number!", NGIRCd_ConfFile, Line );
+               else
+#endif
+               New_Server.group = atoi( Arg );
                return;
        }
        
@@ -501,23 +797,20 @@ Handle_CHANNEL( INT Line, CHAR *Var, CHAR *Arg )
 
        if( strcasecmp( Var, "Name" ) == 0 )
        {
-               /* Hostname des Servers */
-               strncpy( Conf_Channel[Conf_Channel_Count - 1].name, Arg, CHANNEL_NAME_LEN - 1 );
-               Conf_Channel[Conf_Channel_Count - 1].name[CHANNEL_NAME_LEN - 1] = '\0';
+               /* Name of the channel */
+               if( strlcpy( Conf_Channel[Conf_Channel_Count - 1].name, Arg, sizeof( Conf_Channel[Conf_Channel_Count - 1].name )) >= sizeof( Conf_Channel[Conf_Channel_Count - 1].name )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Name\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
        if( strcasecmp( Var, "Modes" ) == 0 )
        {
-               /* Name des Servers ("Nick") */
-               strncpy( Conf_Channel[Conf_Channel_Count - 1].modes, Arg, CHANNEL_MODE_LEN - 1 );
-               Conf_Channel[Conf_Channel_Count - 1].modes[CHANNEL_MODE_LEN - 1] = '\0';
+               /* Initial modes */
+               if( strlcpy( Conf_Channel[Conf_Channel_Count - 1].modes, Arg, sizeof( Conf_Channel[Conf_Channel_Count - 1].modes )) >= sizeof( Conf_Channel[Conf_Channel_Count - 1].modes )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Modes\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
        if( strcasecmp( Var, "Topic" ) == 0 )
        {
-               /* Passwort des Servers */
-               strncpy( Conf_Channel[Conf_Channel_Count - 1].topic, Arg, CHANNEL_TOPIC_LEN - 1 );
-               Conf_Channel[Conf_Channel_Count - 1].topic[CHANNEL_TOPIC_LEN - 1] = '\0';
+               /* Initial topic */
+               if( strlcpy( Conf_Channel[Conf_Channel_Count - 1].topic, Arg, sizeof( Conf_Channel[Conf_Channel_Count - 1].topic )) >= sizeof( Conf_Channel[Conf_Channel_Count - 1].topic )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Topic\" too long!", NGIRCd_ConfFile, Line );
                return;
        }
 
@@ -526,33 +819,65 @@ Handle_CHANNEL( INT Line, CHAR *Var, CHAR *Arg )
 
 
 LOCAL VOID
-Validate_Config( VOID )
+Validate_Config( BOOLEAN Configtest )
 {
-       /* Konfiguration ueberpruefen */
-       
+       /* Validate configuration settings. */
+
+#ifdef DEBUG
+       INT i, servers, servers_once;
+#endif
+
        if( ! Conf_ServerName[0] )
        {
-               /* Kein Servername konfiguriert */
+               /* No server name configured! */
                Config_Error( LOG_ALERT, "No server name configured in \"%s\" ('ServerName')!", NGIRCd_ConfFile );
-               Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE );
-               exit( 1 );
+               if( ! Configtest )
+               {
+                       Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
+                       exit( 1 );
+               }
        }
 
 #ifdef STRICT_RFC
-       if( ! ConfAdminMail[0] )
+       if( ! Conf_ServerAdminMail[0] )
        {
-               /* Keine Server-Information konfiguriert */
+               /* No administrative contact configured! */
                Config_Error( LOG_ALERT, "No administrator email address configured in \"%s\" ('AdminEMail')!", NGIRCd_ConfFile );
-               Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE );
-               exit( 1 );
+               if( ! Configtest )
+               {
+                       Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
+                       exit( 1 );
+               }
        }
 #endif
 
-       if( ! Conf_ServerAdmin1[0] && ! Conf_ServerAdmin1[0] && ! Conf_ServerAdminMail[0] )
+       if( ! Conf_ServerAdmin1[0] && ! Conf_ServerAdmin2[0] && ! Conf_ServerAdminMail[0] )
+       {
+               /* No administrative information configured! */
+               Config_Error( LOG_WARNING, "No administrative information configured but required by RFC!" );
+       }
+#ifdef FD_SETSIZE      
+       if(( Conf_MaxConnections > (LONG)FD_SETSIZE ) || ( Conf_MaxConnections < 1 ))
        {
-               /* Keine Server-Information konfiguriert */
-               Log( LOG_WARNING, "No server information configured but required by RFC!" );
+               Conf_MaxConnections = (LONG)FD_SETSIZE;
+               Config_Error( LOG_ERR, "Setting MaxConnections to %ld, select() can't handle more file descriptors!", Conf_MaxConnections );
        }
+#else
+       Config_Error( LOG_WARN, "Don't know how many file descriptors select() can handle on this system, don't set MaxConnections too high!" );
+#endif
+
+#ifdef DEBUG
+       servers = servers_once = 0;
+       for( i = 0; i < MAX_SERVERS; i++ )
+       {
+               if( Conf_Server[i].name[0] )
+               {
+                       servers++;
+                       if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) servers_once++;
+               }
+       }
+       Log( LOG_DEBUG, "Configuration: Operators=%d, Servers=%d[%d], Channels=%d", Conf_Oper_Count, servers, servers_once, Conf_Channel_Count );
+#endif
 } /* Validate_Config */
 
 
@@ -565,14 +890,13 @@ CONST CHAR *Format;
 va_dcl
 #endif
 {
-       /* Fehler! Auf Console und/oder ins Log schreiben */
+       /* Error! Write to console and/or logfile. */
 
        CHAR msg[MAX_LOG_MSG_LEN];
        va_list ap;
 
        assert( Format != NULL );
 
-       /* String mit variablen Argumenten zusammenbauen ... */
 #ifdef PROTOTYPES
        va_start( ap, Format );
 #else
@@ -580,13 +904,35 @@ va_dcl
 #endif
        vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
        va_end( ap );
-
-       /* Im "normalen Betrieb" soll der Log-Mechanismus des ngIRCd verwendet
-        * werden, beim Testen der Konfiguration jedoch nicht, hier sollen alle
-        * Meldungen direkt auf die Konsole ausgegeben werden: */
-       if( Use_Log ) Log( Level, msg );
+       
+       /* During "normal operations" the log functions of the daemon should
+        * be used, but during testing of the configuration file, all messages
+        * should go directly to the console: */
+       if( Use_Log ) Log( Level, "%s", msg );
        else puts( msg );
 } /* Config_Error */
 
 
+LOCAL VOID
+Init_Server_Struct( CONF_SERVER *Server )
+{
+       /* Initialize server configuration structur to default values */
+
+       assert( Server != NULL );
+
+       strcpy( Server->host, "" );
+       strcpy( Server->ip, "" );
+       strcpy( Server->name, "" );
+       strcpy( Server->pwd_in, "" );
+       strcpy( Server->pwd_out, "" );
+       Server->port = 0;
+       Server->group = NONE;
+       Server->lasttry = time( NULL ) - Conf_ConnectRetry + STARTUP_DELAY;
+       Server->res_stat = NULL;
+       if( NGIRCd_Passive ) Server->flags = CONF_SFLAG_DISABLED;
+       else Server->flags = 0;
+       Server->conn_id = NONE;
+} /* Init_Server_Struct */
+
+
 /* -eof- */