X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd-alex.git;a=blobdiff_plain;f=src%2Fngircd%2Fconf.c;h=b60057070f5077bf71c2898368c98b21b795788f;hp=eccf13cc3edec2a78d533287c2d92a18ce2345ce;hb=32f63abb59b5c9f47b4d517e0bbf9cc73fd044dc;hpb=63cbc6cd4262971d0ef795d2404bc545413e159a

diff --git a/src/ngircd/conf.c b/src/ngircd/conf.c
index eccf13cc..b6005707 100644
--- a/src/ngircd/conf.c
+++ b/src/ngircd/conf.c
@@ -1,21 +1,24 @@
 /*
  * ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2008 Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2012 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
  * 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.
- *
- * Configuration management (reading, parsing & validation)
  */
 
-
 #include "portab.h"
 
+/**
+ * @file
+ * Configuration management (reading, parsing & validation)
+ */
+
 #include "imp.h"
 #include <assert.h>
+#include <ctype.h>
 #include <errno.h>
 #ifdef PROTOTYPES
 #	include <stdarg.h>
@@ -32,35 +35,33 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-#ifdef HAVE_CTYPE_H
-# include <ctype.h>
-#endif
 
 #include "array.h"
 #include "ngircd.h"
 #include "conn.h"
-#include "client.h"
 #include "channel.h"
 #include "defines.h"
 #include "log.h"
 #include "match.h"
-#include "resolve.h"
 #include "tool.h"
 
 #include "exp.h"
 #include "conf.h"
 
 
-static bool Use_Log = true;
+static bool Use_Log = true, Using_MotdFile = true;
 static CONF_SERVER New_Server;
 static int New_Server_Idx;
 
-static size_t Conf_Channel_Count;
+static char Conf_MotdFile[FNAME_LEN];
+
 static void Set_Defaults PARAMS(( bool InitServers ));
-static bool Read_Config PARAMS(( bool ngircd_starting ));
+static bool Read_Config PARAMS(( bool TestOnly, bool IsStarting ));
 static bool Validate_Config PARAMS(( bool TestOnly, bool Rehash ));
 
 static void Handle_GLOBAL PARAMS(( int Line, char *Var, char *Arg ));
+static void Handle_LIMITS PARAMS(( int Line, char *Var, char *Arg ));
+static void Handle_OPTIONS PARAMS(( int Line, char *Var, char *Arg ));
 static void Handle_OPERATOR PARAMS(( int Line, char *Var, char *Arg ));
 static void Handle_SERVER PARAMS(( int Line, char *Var, char *Arg ));
 static void Handle_CHANNEL PARAMS(( int Line, char *Var, char *Arg ));
@@ -68,19 +69,29 @@ static void Handle_CHANNEL PARAMS(( int Line, char *Var, char *Arg ));
 static void Config_Error PARAMS(( const int Level, const char *Format, ... ));
 
 static void Config_Error_NaN PARAMS(( const int LINE, const char *Value ));
+static void Config_Error_Section PARAMS(( const int Line, const char *Item,
+					  const char *Section ));
 static void Config_Error_TooLong PARAMS(( const int LINE, const char *Value ));
 
 static void Init_Server_Struct PARAMS(( CONF_SERVER *Server ));
 
+
 #ifdef WANT_IPV6
 #define DEFAULT_LISTEN_ADDRSTR "::,0.0.0.0"
 #else
 #define DEFAULT_LISTEN_ADDRSTR "0.0.0.0"
 #endif
 
+
 #ifdef SSL_SUPPORT
+
+static void Handle_SSL PARAMS(( int Line, char *Var, char *Ark ));
+
 struct SSLOptions Conf_SSLOptions;
 
+/**
+ * Initialize SSL configuration.
+ */
 static void
 ConfSSL_Init(void)
 {
@@ -93,34 +104,55 @@ ConfSSL_Init(void)
 	free(Conf_SSLOptions.DHFile);
 	Conf_SSLOptions.DHFile = NULL;
 	array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
-}
 
+	array_free(&Conf_SSLOptions.ListenPorts);
+}
 
+/**
+ * Make sure that a configured file is readable.
+ *
+ * Currently, this function is only used for SSL-related options ...
+ *
+ * @param Var Configuration variable
+ * @param Filename Configured filename
+ */
 static void
-ConfSSL_Puts(void)
+CheckFileReadable(const char *Var, const char *Filename)
 {
-	if (Conf_SSLOptions.KeyFile)
-		printf( "  SSLKeyFile = %s\n", Conf_SSLOptions.KeyFile);
-	if (Conf_SSLOptions.CertFile)
-		printf( "  SSLCertFile = %s\n", Conf_SSLOptions.CertFile);
-	if (Conf_SSLOptions.DHFile)
-		printf( "  SSLDHFile = %s\n", Conf_SSLOptions.DHFile);
-	if (array_bytes(&Conf_SSLOptions.KeyFilePassword))
-		puts("  SSLKeyFilePassword = <secret>"  );
-	array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
+	FILE *fp;
+
+	if (!Filename)
+		return;
+
+	fp = fopen(Filename, "r");
+	if (fp)
+		fclose(fp);
+	else
+		Config_Error(LOG_ERR, "Can't read \"%s\" (\"%s\"): %s",
+			     Filename, Var, strerror(errno));
 }
+
 #endif
 
+
+/**
+ * Duplicate string and warn on errors.
+ *
+ * @returns Pointer to string on success, NULL otherwise.
+ */
 static char *
 strdup_warn(const char *str)
 {
 	char *ptr = strdup(str);
 	if (!ptr)
-		Config_Error(LOG_ERR, "Could not allocate mem for string: %s", str);
+		Config_Error(LOG_ERR,
+			     "Could not allocate memory for string: %s", str);
 	return ptr;
 }
 
-
+/**
+ * Output a comma separated list of ports (integer values).
+ */
 static void
 ports_puts(array *a)
 {
@@ -138,7 +170,9 @@ ports_puts(array *a)
 	putc('\n', stdout);
 }
 
-
+/**
+ * Parse a comma separated string into an array of port numbers (integers).
+ */
 static void
 ports_parse(array *a, int Line, char *Arg)
 {
@@ -148,12 +182,10 @@ ports_parse(array *a, int Line, char *Arg)
 
 	array_trunc(a);
 
-	/* Ports on that the server should listen. More port numbers
-	 * must be separated by "," */
 	ptr = strtok( Arg, "," );
 	while (ptr) {
-		ngt_TrimStr( ptr );
-		port = atol( ptr );
+		ngt_TrimStr(ptr);
+		port = atoi(ptr);
 		if (port > 0 && port < 0xFFFF) {
 			port16 = (UINT16) port;
 			if (!array_catb(a, (char*)&port16, sizeof port16))
@@ -168,28 +200,36 @@ ports_parse(array *a, int Line, char *Arg)
 	}
 }
 
-
+/**
+ * Initialize configuration module.
+ */
 GLOBAL void
 Conf_Init( void )
 {
-	Read_Config( true );
+	Read_Config(false, true);
 	Validate_Config(false, false);
-} /* Config_Init */
-
+}
 
+/**
+ * "Rehash" (reload) server configuration.
+ *
+ * @returns true if configuration has been re-read, false on errors.
+ */
 GLOBAL bool
 Conf_Rehash( void )
 {
-	if (!Read_Config(false))
+	if (!Read_Config(false, false))
 		return false;
 	Validate_Config(false, true);
 
 	/* Update CLIENT structure of local server */
 	Client_SetInfo(Client_ThisServer(), Conf_ServerInfo);
 	return true;
-} /* Config_Rehash */
-
+}
 
+/**
+ * Output a boolean value as "yes/no" string.
+ */
 static const char*
 yesno_to_str(int boolean_value)
 {
@@ -198,12 +238,58 @@ yesno_to_str(int boolean_value)
 	return "no";
 }
 
+/**
+ * Free all IRC operator configuration structures.
+ */
+static void
+opers_free(void)
+{
+	struct Conf_Oper *op;
+	size_t len;
+
+	len = array_length(&Conf_Opers, sizeof(*op));
+	op = array_start(&Conf_Opers);
+	while (len--) {
+		free(op->mask);
+		op++;
+	}
+	array_free(&Conf_Opers);
+}
+
+/**
+ * Output all IRC operator configuration structures.
+ */
+static void
+opers_puts(void)
+{
+	struct Conf_Oper *op;
+	size_t count, i;
+
+	count = array_length(&Conf_Opers, sizeof(*op));
+	op = array_start(&Conf_Opers);
+	for (i = 0; i < count; i++, op++) {
+		if (!op->name[0])
+			continue;
+
+		puts("[OPERATOR]");
+		printf("  Name = %s\n", op->name);
+		printf("  Password = %s\n", op->pwd);
+		printf("  Mask = %s\n\n", op->mask ? op->mask : "");
+	}
+}
 
+/**
+ * Read configuration, validate and output it.
+ *
+ * This function waits for a keypress of the user when stdin/stdout are valid
+ * tty's ("you can read our nice message and we can read in your keypress").
+ *
+ * @return	0 on succes, 1 on failure(s); therefore the result code can
+ * 		directly be used by exit() when running "ngircd --configtest".
+ */
 GLOBAL int
 Conf_Test( void )
 {
-	/* Read configuration, validate and output it. */
-
 	struct passwd *pwd;
 	struct group *grp;
 	unsigned int i;
@@ -213,75 +299,117 @@ Conf_Test( void )
 
 	Use_Log = false;
 
-	if (! Read_Config(true))
+	if (!Read_Config(true, true))
 		return 1;
 
 	config_valid = Validate_Config(true, false);
 
-	/* If stdin and stdout ("you can read our nice message and we can
-	 * read in your keypress") are valid tty's, wait for a key: */
-	if( isatty( fileno( stdin )) && isatty( fileno( stdout ))) {
-		puts( "OK, press enter to see a dump of your service configuration ..." );
-		getchar( );
-	} else {
-		puts( "Ok, dump of your server configuration follows:\n" );
-	}
-
-	puts( "[GLOBAL]" );
-	printf( "  Name = %s\n", Conf_ServerName );
-	printf( "  Info = %s\n", Conf_ServerInfo );
-	printf( "  Password = %s\n", Conf_ServerPwd );
-	printf( "  AdminInfo1 = %s\n", Conf_ServerAdmin1 );
-	printf( "  AdminInfo2 = %s\n", Conf_ServerAdmin2 );
-	printf( "  AdminEMail = %s\n", Conf_ServerAdminMail );
-	printf( "  MotdFile = %s\n", Conf_MotdFile );
-	printf( "  MotdPhrase = %s\n", Conf_MotdPhrase );
-	printf( "  ChrootDir = %s\n", Conf_Chroot );
-	printf( "  PidFile = %s\n", Conf_PidFile);
+	/* Valid tty? */
+	if(isatty(fileno(stdin)) && isatty(fileno(stdout))) {
+		puts("OK, press enter to see a dump of your server configuration ...");
+		getchar();
+	} else
+		puts("Ok, dump of your server configuration follows:\n");
+
+	puts("[GLOBAL]");
+	printf("  Name = %s\n", Conf_ServerName);
+	printf("  AdminInfo1 = %s\n", Conf_ServerAdmin1);
+	printf("  AdminInfo2 = %s\n", Conf_ServerAdmin2);
+	printf("  AdminEMail = %s\n", Conf_ServerAdminMail);
+	printf("  Info = %s\n", Conf_ServerInfo);
 	printf("  Listen = %s\n", Conf_ListenAddress);
-	fputs("  Ports = ", stdout);
-
-	ports_puts(&Conf_ListenPorts);
-#ifdef SSL_SUPPORT
-	fputs("  SSLPorts = ", stdout);
-	ports_puts(&Conf_SSLOptions.ListenPorts);
-	ConfSSL_Puts();
+	if (Using_MotdFile) {
+		printf("  MotdFile = %s\n", Conf_MotdFile);
+		printf("  MotdPhrase =\n");
+	} else {
+		printf("  MotdFile = \n");
+		printf("  MotdPhrase = %s\n", array_bytes(&Conf_Motd)
+		       ? (const char*) array_start(&Conf_Motd) : "");
+	}
+#ifndef PAM
+	printf("  Password = %s\n", Conf_ServerPwd);
 #endif
-
-	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", yesno_to_str(Conf_OperCanMode));
-	printf( "  OperServerMode = %s\n", yesno_to_str(Conf_OperServerMode));
-	printf( "  PredefChannelsOnly = %s\n", yesno_to_str(Conf_PredefChannelsOnly));
-	printf( "  NoDNS = %s\n", yesno_to_str(Conf_NoDNS));
-	printf( "  NoIdent = %s\n", yesno_to_str(Conf_NoIdent));
-
+	printf("  PidFile = %s\n", Conf_PidFile);
+	printf("  Ports = ");
+	ports_puts(&Conf_ListenPorts);
+	grp = getgrgid(Conf_GID);
+	if (grp)
+		printf("  ServerGID = %s\n", grp->gr_name);
+	else
+		printf("  ServerGID = %ld\n", (long)Conf_GID);
+	pwd = getpwuid(Conf_UID);
+	if (pwd)
+		printf("  ServerUID = %s\n", pwd->pw_name);
+	else
+		printf("  ServerUID = %ld\n", (long)Conf_UID);
+	puts("");
+
+	puts("[LIMITS]");
+	printf("  ConnectRetry = %d\n", Conf_ConnectRetry);
+	printf("  MaxConnections = %d\n", Conf_MaxConnections);
+	printf("  MaxConnectionsIP = %d\n", Conf_MaxConnectionsIP);
+	printf("  MaxJoins = %d\n", Conf_MaxJoins > 0 ? Conf_MaxJoins : -1);
+	printf("  MaxNickLength = %u\n", Conf_MaxNickLength - 1);
+	printf("  MaxListSize = %d\n", Conf_MaxListSize);
+	printf("  PingTimeout = %d\n", Conf_PingTimeout);
+	printf("  PongTimeout = %d\n", Conf_PongTimeout);
+	puts("");
+
+	puts("[OPTIONS]");
+	printf("  AllowRemoteOper = %s\n", yesno_to_str(Conf_AllowRemoteOper));
+	printf("  ChrootDir = %s\n", Conf_Chroot);
+	printf("  CloakHost = %s\n", Conf_CloakHost);
+	printf("  CloakHostModeX = %s\n", Conf_CloakHostModeX);
+	printf("  CloakHostSalt = %s\n", Conf_CloakHostSalt);
+	printf("  CloakUserToNick = %s\n", yesno_to_str(Conf_CloakUserToNick));
 #ifdef WANT_IPV6
 	printf("  ConnectIPv4 = %s\n", yesno_to_str(Conf_ConnectIPv6));
 	printf("  ConnectIPv6 = %s\n", yesno_to_str(Conf_ConnectIPv4));
 #endif
-	printf( "  MaxConnections = %ld\n", Conf_MaxConnections);
-	printf( "  MaxConnectionsIP = %d\n", Conf_MaxConnectionsIP);
-	printf( "  MaxJoins = %d\n", Conf_MaxJoins>0 ? Conf_MaxJoins : -1);
-	printf( "  MaxNickLength = %u\n\n", Conf_MaxNickLength - 1);
+	printf("  DNS = %s\n", yesno_to_str(Conf_DNS));
+#ifdef IDENT
+	printf("  Ident = %s\n", yesno_to_str(Conf_Ident));
+#endif
+	printf("  MorePrivacy = %s\n", yesno_to_str(Conf_MorePrivacy));
+	printf("  NoticeAuth = %s\n", yesno_to_str(Conf_NoticeAuth));
+	printf("  OperCanUseMode = %s\n", yesno_to_str(Conf_OperCanMode));
+	printf("  OperChanPAutoOp = %s\n", yesno_to_str(Conf_OperChanPAutoOp));
+	printf("  OperServerMode = %s\n", yesno_to_str(Conf_OperServerMode));
+#ifdef PAM
+	printf("  PAM = %s\n", yesno_to_str(Conf_PAM));
+	printf("  PAMIsOptional = %s\n", yesno_to_str(Conf_PAMIsOptional));
+#endif
+	printf("  PredefChannelsOnly = %s\n", yesno_to_str(Conf_PredefChannelsOnly));
+#ifndef STRICT_RFC
+	printf("  RequireAuthPing = %s\n", yesno_to_str(Conf_AuthPing));
+#endif
+	printf("  ScrubCTCP = %s\n", yesno_to_str(Conf_ScrubCTCP));
+#ifdef SYSLOG
+	printf("  SyslogFacility = %s\n",
+	       ngt_SyslogFacilityName(Conf_SyslogFacility));
+#endif
+	printf("  WebircPassword = %s\n", Conf_WebircPwd);
+	puts("");
 
-	for( i = 0; i < Conf_Oper_Count; i++ ) {
-		if( ! Conf_Oper[i].name[0] ) continue;
+#ifdef SSL_SUPPORT
+	puts("[SSL]");
+	printf("  CertFile = %s\n", Conf_SSLOptions.CertFile
+					? Conf_SSLOptions.CertFile : "");
+	printf("  DHFile = %s\n", Conf_SSLOptions.DHFile
+					? Conf_SSLOptions.DHFile : "");
+	printf("  KeyFile = %s\n", Conf_SSLOptions.KeyFile
+					? Conf_SSLOptions.KeyFile : "");
+	if (array_bytes(&Conf_SSLOptions.KeyFilePassword))
+		puts("  KeyFilePassword = <secret>");
+	else
+		puts("  KeyFilePassword = ");
+	array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
+	printf("  Ports = ");
+	ports_puts(&Conf_SSLOptions.ListenPorts);
+	puts("");
+#endif
 
-		/* Valid "Operator" section */
-		puts( "[OPERATOR]" );
-		printf( "  Name = %s\n", Conf_Oper[i].name );
-		printf( "  Password = %s\n", Conf_Oper[i].pwd );
-		if ( Conf_Oper[i].mask ) printf( "  Mask = %s\n", Conf_Oper[i].mask );
-		puts( "" );
-	}
+	opers_puts();
 
 	for( i = 0; i < MAX_SERVERS; i++ ) {
 		if( ! Conf_Server[i].name[0] ) continue;
@@ -319,17 +447,19 @@ Conf_Test( void )
 	}
 
 	return (config_valid ? 0 : 1);
-} /* Conf_Test */
-
+}
 
+/**
+ * Remove connection information from configured server.
+ *
+ * If the server is set as "once", delete it from our configuration;
+ * otherwise set the time for the next connection attempt.
+ *
+ * Non-server connections will be silently ignored.
+ */
 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;
 	time_t t;
 
@@ -355,26 +485,34 @@ Conf_UnsetServer( CONN_ID Idx )
 				Conf_Server[i].lasttry = t;
 		}
 	}
-} /* Conf_UnsetServer */
-
+}
 
+/**
+ * Set connection information for specified configured server.
+ */
 GLOBAL void
 Conf_SetServer( int ConfServer, CONN_ID Idx )
 {
-	/* Set connection for specified configured server */
-
 	assert( ConfServer > NONE );
 	assert( Idx > NONE );
 
+	if (Conf_Server[ConfServer].conn_id > NONE &&
+	    Conf_Server[ConfServer].conn_id != Idx) {
+		Log(LOG_ALERT,
+			"Trying to update connection index for already registered server \"%s\": %d/%d - ignored.",
+			Conf_Server[ConfServer].name,
+			Conf_Server[ConfServer].conn_id, Idx);
+		return;
+	}
 	Conf_Server[ConfServer].conn_id = Idx;
-} /* Conf_SetServer */
-
+}
 
+/**
+ * Get index of server in configuration structure.
+ */
 GLOBAL int
 Conf_GetServer( CONN_ID Idx )
 {
-	/* Get index of server in configuration structure */
-
 	int i = 0;
 
 	assert( Idx > NONE );
@@ -383,18 +521,20 @@ Conf_GetServer( CONN_ID Idx )
 		if( Conf_Server[i].conn_id == Idx ) return i;
 	}
 	return NONE;
-} /* Conf_GetServer */
-
+}
 
+/**
+ * Enable a server by name and adjust its port number.
+ *
+ * @returns	true if a server has been enabled and now has a valid port
+ *		number and host name for outgoing connections.
+ */
 GLOBAL bool
 Conf_EnableServer( const char *Name, UINT16 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: */
@@ -404,53 +544,74 @@ Conf_EnableServer( const char *Name, UINT16 Port )
 		}
 	}
 	return false;
-} /* Conf_EnableServer */
-
+}
 
+/**
+ * Enable a server by name.
+ *
+ * The server is only usable as outgoing server, if it has set a valid port
+ * number for outgoing connections!
+ * If not, you have to use Conf_EnableServer() function to make it available.
+ *
+ * @returns	true if a server has been enabled; false otherwise.
+ */
 GLOBAL bool
 Conf_EnablePassiveServer(const char *Name)
 {
-	/* Enable specified server */
 	int i;
 
 	assert( Name != NULL );
 	for (i = 0; i < MAX_SERVERS; i++) {
-		if ((strcasecmp( Conf_Server[i].name, Name ) == 0) && (Conf_Server[i].port > 0)) {
+		if ((strcasecmp( Conf_Server[i].name, Name ) == 0)
+		    && (Conf_Server[i].port > 0)) {
 			/* BINGO! Enable server */
 			Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
 			return true;
 		}
 	}
 	return false;
-} /* Conf_EnablePassiveServer */
-
+}
 
+/**
+ * Disable a server by name.
+ * An already established connection will be disconnected.
+ *
+ * @returns	true if a server was found and has been disabled.
+ */
 GLOBAL bool
 Conf_DisableServer( const 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);
+			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 */
-
+}
 
+/**
+ * Add a new remote server to our configuration.
+ *
+ * @param Name		Name of the new server.
+ * @param Port		Port number to connect to or 0 for incoming connections.
+ * @param Host		Host name to connect to.
+ * @param MyPwd		Password that will be sent to the peer.
+ * @param PeerPwd	Password that must be received from the peer.
+ * @returns		true if the new server has been added; false otherwise.
+ */
 GLOBAL bool
-Conf_AddServer( const char *Name, UINT16 Port, const char *Host, const char *MyPwd, const char *PeerPwd )
+Conf_AddServer(const char *Name, UINT16 Port, const char *Host,
+	       const char *MyPwd, const char *PeerPwd)
 {
-	/* Add new server to configuration */
-
 	int i;
 
 	assert( Name != NULL );
@@ -474,82 +635,200 @@ Conf_AddServer( const char *Name, UINT16 Port, const char *Host, const char *MyP
 	Conf_Server[i].flags = CONF_SFLAG_ONCE;
 
 	return true;
-} /* Conf_AddServer */
-
+}
 
 /**
- * Check if the given nick name is an service
+ * Check if the given nick name is reserved for services on a particular server.
+ *
+ * @param ConfServer The server index to check.
+ * @param Nick The nick name to check.
+ * @returns true if the given nick name belongs to an "IRC service".
  */
 GLOBAL bool
-Conf_IsService(int ConfServer, const char *Nick)
+Conf_NickIsService(int ConfServer, const char *Nick)
 {
-	return MatchCaseInsensitive(Conf_Server[ConfServer].svs_mask, Nick);
-} /* Conf_IsService */
+	assert (ConfServer >= 0);
+	assert (ConfServer < MAX_SERVERS);
 
+	return MatchCaseInsensitiveList(Conf_Server[ConfServer].svs_mask,
+					Nick, ",");
+}
 
-static void
-Set_Defaults( bool InitServers )
+/**
+ * Check if the given nick name is blocked for "normal client" use.
+ *
+ * @param ConfServer The server index or NONE to check all configured servers.
+ * @param Nick The nick name to check.
+ * @returns true if the given nick name belongs to an "IRC service".
+ */
+GLOBAL bool
+Conf_NickIsBlocked(const char *Nick)
 {
-	/* Initialize configuration variables with default values. */
-
 	int i;
 
-	strcpy( Conf_ServerName, "" );
-	snprintf( Conf_ServerInfo, sizeof Conf_ServerInfo, "%s %s", PACKAGE_NAME, PACKAGE_VERSION );
-	strcpy( Conf_ServerPwd, "" );
-
-	strcpy( Conf_ServerAdmin1, "" );
-	strcpy( Conf_ServerAdmin2, "" );
-	strcpy( Conf_ServerAdminMail, "" );
-
-	strlcpy( Conf_MotdFile, SYSCONFDIR, sizeof( Conf_MotdFile ));
-	strlcat( Conf_MotdFile, MOTD_FILE, sizeof( Conf_MotdFile ));
-
-	strlcpy( Conf_MotdPhrase, MOTD_PHRASE, sizeof( Conf_MotdPhrase ));
-
-	strlcpy( Conf_Chroot, CHROOT_DIR, sizeof( Conf_Chroot ));
-
-	strlcpy( Conf_PidFile, PID_FILE, sizeof( Conf_PidFile ));
+	for(i = 0; i < MAX_SERVERS; i++) {
+		if (!Conf_Server[i].name[0])
+			continue;
+		if (Conf_NickIsService(i, Nick))
+			return true;
+	}
+	return false;
+}
 
+/**
+ * Initialize configuration settings with their default values.
+ */
+static void
+Set_Defaults(bool InitServers)
+{
+	int i;
+	char random[RANDOM_SALT_LEN + 1];
+
+	/* Global */
+	strcpy(Conf_ServerName, "");
+	strcpy(Conf_ServerAdmin1, "");
+	strcpy(Conf_ServerAdmin2, "");
+	strcpy(Conf_ServerAdminMail, "");
+	snprintf(Conf_ServerInfo, sizeof Conf_ServerInfo, "%s %s",
+		 PACKAGE_NAME, PACKAGE_VERSION);
 	free(Conf_ListenAddress);
 	Conf_ListenAddress = NULL;
+	array_free(&Conf_ListenPorts);
+	array_free(&Conf_Motd);
+	strlcpy(Conf_MotdFile, SYSCONFDIR, sizeof(Conf_MotdFile));
+	strlcat(Conf_MotdFile, MOTD_FILE, sizeof(Conf_MotdFile));
+	strcpy(Conf_ServerPwd, "");
+	strlcpy(Conf_PidFile, PID_FILE, sizeof(Conf_PidFile));
 	Conf_UID = Conf_GID = 0;
 
+	/* Limits */
+	Conf_ConnectRetry = 60;
+	Conf_MaxConnections = 0;
+	Conf_MaxConnectionsIP = 5;
+	Conf_MaxJoins = 10;
+	Conf_MaxNickLength = CLIENT_NICK_LEN_DEFAULT;
+	Conf_MaxListSize = 100;
 	Conf_PingTimeout = 120;
 	Conf_PongTimeout = 20;
 
-	Conf_ConnectRetry = 60;
-
-	Conf_Oper_Count = 0;
-	Conf_Channel_Count = 0;
-
+	/* Options */
+	Conf_AllowRemoteOper = false;
+#ifndef STRICT_RFC
+	Conf_AuthPing = false;
+#endif
+	strlcpy(Conf_Chroot, CHROOT_DIR, sizeof(Conf_Chroot));
+	strcpy(Conf_CloakHost, "");
+	strcpy(Conf_CloakHostModeX, "");
+	strcpy(Conf_CloakHostSalt, ngt_RandomStr(random, RANDOM_SALT_LEN));
+	Conf_CloakUserToNick = false;
+	Conf_ConnectIPv4 = true;
+#ifdef WANT_IPV6
+	Conf_ConnectIPv6 = true;
+#else
+	Conf_ConnectIPv6 = false;
+#endif
+	Conf_DNS = true;
+#ifdef IDENTAUTH
+	Conf_Ident = true;
+#else
+	Conf_Ident = false;
+#endif
+	Conf_MorePrivacy = false;
+	Conf_NoticeAuth = false;
 	Conf_OperCanMode = false;
-	Conf_NoDNS = false;
-	Conf_NoIdent = false;
-	Conf_PredefChannelsOnly = false;
+	Conf_OperChanPAutoOp = true;
 	Conf_OperServerMode = false;
+#ifdef PAM
+	Conf_PAM = true;
+#else
+	Conf_PAM = false;
+#endif
+	Conf_PAMIsOptional = false;
+	Conf_PredefChannelsOnly = false;
+#ifdef SYSLOG
+	Conf_ScrubCTCP = false;
+#ifdef LOG_LOCAL5
+	Conf_SyslogFacility = LOG_LOCAL5;
+#else
+	Conf_SyslogFacility = 0;
+#endif
+#endif
 
-	Conf_ConnectIPv4 = true;
-	Conf_ConnectIPv6 = true;
+	/* Initialize server configuration structures */
+	if (InitServers) {
+		for (i = 0; i < MAX_SERVERS;
+		     Init_Server_Struct(&Conf_Server[i++]));
+	}
+}
 
-	Conf_MaxConnections = 0;
-	Conf_MaxConnectionsIP = 5;
-	Conf_MaxJoins = 10;
-	Conf_MaxNickLength = CLIENT_NICK_LEN_DEFAULT;
+/**
+ * Get number of configured listening ports.
+ *
+ * @returns The number of ports (IPv4+IPv6) on which the server should listen.
+ */
+static bool
+no_listenports(void)
+{
+	size_t cnt = array_bytes(&Conf_ListenPorts);
+#ifdef SSL_SUPPORT
+	cnt += array_bytes(&Conf_SSLOptions.ListenPorts);
+#endif
+	return cnt == 0;
+}
 
-	/* Initialize server configuration structures */
-	if( InitServers ) for( i = 0; i < MAX_SERVERS; Init_Server_Struct( &Conf_Server[i++] ));
-} /* Set_Defaults */
+/**
+ * Read MOTD ("message of the day") file.
+ *
+ * @param filename	Name of the file to read.
+ */
+static void
+Read_Motd(const char *filename)
+{
+	char line[127];
+	FILE *fp;
 
+	if (*filename == '\0')
+		return;
+
+	fp = fopen(filename, "r");
+	if (!fp) {
+		Config_Error(LOG_WARNING, "Can't read MOTD file \"%s\": %s",
+					filename, strerror(errno));
+		return;
+	}
+
+	array_free(&Conf_Motd);
+	Using_MotdFile = true;
+
+	while (fgets(line, (int)sizeof line, fp)) {
+		ngt_TrimLastChr( line, '\n');
+
+		/* add text including \0 */
+		if (!array_catb(&Conf_Motd, line, strlen(line) + 1)) {
+			Log(LOG_WARNING, "Cannot add MOTD text: %s", strerror(errno));
+			break;
+		}
+	}
+	fclose(fp);
+}
 
+/**
+ * Read ngIRCd configuration file.
+ *
+ * Please note that this function uses exit(1) on fatal errors and therefore
+ * can result in ngIRCd terminating!
+ *
+ * @param ngircd_starting	Flag indicating if ngIRCd is starting or not.
+ * @returns			true when the configuration file has been read
+ *				successfully; false otherwise.
+ */
 static bool
-Read_Config( bool ngircd_starting )
+Read_Config(bool TestOnly, bool IsStarting)
 {
-	/* Read configuration file. */
-
 	char section[LINE_LEN], str[LINE_LEN], *var, *arg, *ptr;
 	const UINT16 defaultport = 6667;
 	int line, i, n;
+	size_t count;
 	FILE *fd;
 
 	/* Open configuration file */
@@ -558,15 +837,19 @@ Read_Config( bool ngircd_starting )
 		/* No configuration file found! */
 		Config_Error( LOG_ALERT, "Can't read configuration \"%s\": %s",
 					NGIRCd_ConfFile, strerror( errno ));
-		if (!ngircd_starting)
+		if (!IsStarting)
 			return false;
 		Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
 		exit( 1 );
 	}
 
-	Set_Defaults( ngircd_starting );
+	opers_free();
+	Set_Defaults(IsStarting);
 
-	Config_Error( LOG_INFO, "Reading configuration from \"%s\" ...", NGIRCd_ConfFile );
+	if (TestOnly)
+		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
@@ -619,24 +902,15 @@ Read_Config( bool ngircd_starting )
 		/* Is this the beginning of a new section? */
 		if(( str[0] == '[' ) && ( str[strlen( str ) - 1] == ']' )) {
 			strlcpy( section, str, sizeof( section ));
-			if( strcasecmp( section, "[GLOBAL]" ) == 0 )
+			if (strcasecmp(section, "[GLOBAL]") == 0
+			    || strcasecmp(section, "[LIMITS]") == 0
+			    || strcasecmp(section, "[OPTIONS]") == 0
+#ifdef SSL_SUPPORT
+			    || strcasecmp(section, "[SSL]") == 0
+#endif
+			    )
 				continue;
 
-			if( strcasecmp( section, "[OPERATOR]" ) == 0 ) {
-				if( Conf_Oper_Count + 1 > MAX_OPERATORS )
-					Config_Error( LOG_ERR, "Too many operators configured.");
-				else {
-					/* Initialize new operator structure */
-					Conf_Oper[Conf_Oper_Count].name[0] = '\0';
-					Conf_Oper[Conf_Oper_Count].pwd[0] = '\0';
-					if (Conf_Oper[Conf_Oper_Count].mask) {
-						free(Conf_Oper[Conf_Oper_Count].mask );
-						Conf_Oper[Conf_Oper_Count].mask = NULL;
-					}
-					Conf_Oper_Count++;
-				}
-				continue;
-			}
 			if( strcasecmp( section, "[SERVER]" ) == 0 ) {
 				/* Check if there is already a server to add */
 				if( New_Server.name[0] ) {
@@ -661,12 +935,36 @@ Read_Config( bool ngircd_starting )
 				else New_Server_Idx = i;
 				continue;
 			}
+
 			if (strcasecmp(section, "[CHANNEL]") == 0) {
-				Conf_Channel_Count++;
+				count = array_length(&Conf_Channels,
+						     sizeof(struct Conf_Channel));
+				if (!array_alloc(&Conf_Channels,
+						 sizeof(struct Conf_Channel),
+						 count)) {
+					Config_Error(LOG_ERR,
+						     "Could not allocate memory for new operator (line %d)",
+						     line);
+				}
+				continue;
+			}
+
+			if (strcasecmp(section, "[OPERATOR]") == 0) {
+				count = array_length(&Conf_Opers,
+						     sizeof(struct Conf_Oper));
+				if (!array_alloc(&Conf_Opers,
+						 sizeof(struct Conf_Oper),
+						 count)) {
+					Config_Error(LOG_ERR,
+						     "Could not allocate memory for new channel (line &d)",
+						     line);
+				}
 				continue;
 			}
 
-			Config_Error( LOG_ERR, "%s, line %d: Unknown section \"%s\"!", NGIRCd_ConfFile, line, section );
+			Config_Error(LOG_ERR,
+				     "%s, line %d: Unknown section \"%s\"!",
+				     NGIRCd_ConfFile, line, section);
 			section[0] = 0x1;
 		}
 		if( section[0] == 0x1 ) continue;
@@ -681,11 +979,26 @@ Read_Config( bool ngircd_starting )
 		var = str; ngt_TrimStr( var );
 		arg = ptr + 1; ngt_TrimStr( arg );
 
-		if( strcasecmp( section, "[GLOBAL]" ) == 0 ) Handle_GLOBAL( line, var, arg );
-		else if( strcasecmp( section, "[OPERATOR]" ) == 0 ) Handle_OPERATOR( line, var, arg );
-		else if( strcasecmp( section, "[SERVER]" ) == 0 ) Handle_SERVER( line, var, arg );
-		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 );
+		if(strcasecmp(section, "[GLOBAL]") == 0)
+			Handle_GLOBAL(line, var, arg);
+		else if(strcasecmp(section, "[LIMITS]") == 0)
+			Handle_LIMITS(line, var, arg);
+		else if(strcasecmp(section, "[OPTIONS]") == 0)
+			Handle_OPTIONS(line, var, arg);
+#ifdef SSL_SUPPORT
+		else if(strcasecmp(section, "[SSL]") == 0)
+			Handle_SSL(line, var, arg);
+#endif
+		else if(strcasecmp(section, "[OPERATOR]") == 0)
+			Handle_OPERATOR(line, var, arg);
+		else if(strcasecmp(section, "[SERVER]") == 0)
+			Handle_SERVER(line, var, arg);
+		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 */
@@ -698,12 +1011,14 @@ Read_Config( bool ngircd_starting )
 		Conf_Server[New_Server_Idx] = New_Server;
 	}
 
-	if (0 == array_length(&Conf_ListenPorts, sizeof(UINT16))) {
-		if (!array_copyb(&Conf_ListenPorts, (char*) &defaultport, sizeof defaultport)) {
-			Config_Error( LOG_ALERT, "Could not add default listening Port %u: %s",
-							(unsigned int) defaultport, strerror(errno));
-			exit( 1 );
-		}
+	/* not a single listening port? Add default. */
+	if (no_listenports() &&
+		!array_copyb(&Conf_ListenPorts, (char*) &defaultport, sizeof defaultport))
+	{
+		Config_Error(LOG_ALERT, "Could not add default listening Port %u: %s",
+					(unsigned int) defaultport, strerror(errno));
+
+		exit(1);
 	}
 
 	if (!Conf_ListenAddress)
@@ -713,23 +1028,51 @@ Read_Config( bool ngircd_starting )
 		Config_Error(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
 		exit(1);
 	}
-	return true;
-} /* Read_Config */
 
+	/* No MOTD phrase configured? (re)try motd file. */
+	if (array_bytes(&Conf_Motd) == 0)
+		Read_Motd(Conf_MotdFile);
+
+#ifdef SSL_SUPPORT
+	/* Make sure that all SSL-related files are readable */
+	CheckFileReadable("CertFile", Conf_SSLOptions.CertFile);
+	CheckFileReadable("DHFile", Conf_SSLOptions.DHFile);
+	CheckFileReadable("KeyFile", Conf_SSLOptions.KeyFile);
+#endif
+
+	return true;
+}
 
+/**
+ * Check whether a string argument is "true" or "false".
+ *
+ * @param Arg	Input string.
+ * @returns	true if the input string has been parsed as "yes", "true"
+ *		(case insensitive) or a non-zero integer value.
+ */
 static bool
-Check_ArgIsTrue( const char *Arg )
+Check_ArgIsTrue(const char *Arg)
 {
-	if( strcasecmp( Arg, "yes" ) == 0 ) return true;
-	if( strcasecmp( Arg, "true" ) == 0 ) return true;
-	if( atoi( Arg ) != 0 ) return true;
+	if (strcasecmp(Arg, "yes") == 0)
+		return true;
+	if (strcasecmp(Arg, "true") == 0)
+		return true;
+	if (atoi(Arg) != 0)
+		return true;
 
 	return false;
-} /* Check_ArgIsTrue */
-
+}
 
-static unsigned int Handle_MaxNickLength(int Line, const char *Arg)
-{
+/**
+ * Handle setting of "MaxNickLength".
+ *
+ * @param Line	Line number in configuration file.
+ * @raram Arg	Input string.
+ * @returns	New configured maximum nick name length.
+ */
+static unsigned int
+Handle_MaxNickLength(int Line, const char *Arg)
+{
 	unsigned new;
 
 	new = (unsigned) atoi(Arg) + 1;
@@ -746,332 +1089,641 @@ static unsigned int Handle_MaxNickLength(int Line, const char *Arg)
 		return 2;
 	}
 	return new;
-} /* Handle_MaxNickLength */
+}
 
+/**
+ * Output a warning messages if IDENT is configured but not compiled in.
+ */
+static void
+WarnIdent(int UNUSED Line)
+{
+#ifndef IDENTAUTH
+	if (Conf_Ident) {
+		/* user has enabled ident lookups explicitly, but ... */
+		Config_Error(LOG_WARNING,
+			"%s: line %d: \"Ident = yes\", but ngircd was built without IDENT support!",
+			NGIRCd_ConfFile, Line);
+	}
+#endif
+}
+
+/**
+ * Output a warning messages if IPv6 is configured but not compiled in.
+ */
+static void
+WarnIPv6(int UNUSED Line)
+{
+#ifndef WANT_IPV6
+	if (Conf_ConnectIPv6) {
+		/* user has enabled IPv6 explicitly, but ... */
+		Config_Error(LOG_WARNING,
+			"%s: line %d: \"ConnectIPv6 = yes\", but ngircd was built without IPv6 support!",
+			NGIRCd_ConfFile, Line);
+	}
+#endif
+}
 
+/**
+ * Output a warning messages if PAM is configured but not compiled in.
+ */
+static void
+WarnPAM(int UNUSED Line)
+{
+#ifndef PAM
+	if (Conf_PAM) {
+		Config_Error(LOG_WARNING,
+			"%s: line %d: \"PAM = yes\", but ngircd was built without PAM support!",
+			NGIRCd_ConfFile, Line);
+	}
+#endif
+}
+
+/**
+ * Handle legacy "NoXXX" options in [GLOBAL] section.
+ *
+ * TODO: This function and support for "NoXXX" could be removed starting
+ * with ngIRCd release 19 (one release after marking it "deprecated").
+ *
+ * @param Var	Variable name.
+ * @param Arg	Argument string.
+ * @returns	true if a NoXXX option has been processed; false otherwise.
+ */
+static bool
+CheckLegacyNoOption(const char *Var, const char *Arg)
+{
+	if(strcasecmp(Var, "NoDNS") == 0) {
+		Conf_DNS = !Check_ArgIsTrue( Arg );
+		return true;
+	}
+	if (strcasecmp(Var, "NoIdent") == 0) {
+		Conf_Ident = !Check_ArgIsTrue(Arg);
+		return true;
+	}
+	if(strcasecmp(Var, "NoPAM") == 0) {
+		Conf_PAM = !Check_ArgIsTrue(Arg);
+		return true;
+	}
+	return false;
+}
+
+/**
+ * Handle deprecated legacy options in [GLOBAL] section.
+ *
+ * TODO: This function and support for these options in the [Global] section
+ * could be removed starting with ngIRCd release 19 (one release after
+ * marking it "deprecated").
+ *
+ * @param Var	Variable name.
+ * @param Arg	Argument string.
+ * @returns	true if a legacy option has been processed; false otherwise.
+ */
+static const char*
+CheckLegacyGlobalOption(int Line, char *Var, char *Arg)
+{
+	if (strcasecmp(Var, "AllowRemoteOper") == 0
+	    || strcasecmp(Var, "ChrootDir") == 0
+	    || strcasecmp(Var, "ConnectIPv4") == 0
+	    || strcasecmp(Var, "ConnectIPv6") == 0
+	    || strcasecmp(Var, "OperCanUseMode") == 0
+	    || strcasecmp(Var, "OperChanPAutoOp") == 0
+	    || strcasecmp(Var, "OperServerMode") == 0
+	    || strcasecmp(Var, "PredefChannelsOnly") == 0
+	    || strcasecmp(Var, "SyslogFacility") == 0
+	    || strcasecmp(Var, "WebircPassword") == 0) {
+		Handle_OPTIONS(Line, Var, Arg);
+		return "[Options]";
+	}
+	if (strcasecmp(Var, "ConnectRetry") == 0
+	    || strcasecmp(Var, "MaxConnections") == 0
+	    || strcasecmp(Var, "MaxConnectionsIP") == 0
+	    || strcasecmp(Var, "MaxJoins") == 0
+	    || strcasecmp(Var, "MaxNickLength") == 0
+	    || strcasecmp(Var, "PingTimeout") == 0
+	    || strcasecmp(Var, "PongTimeout") == 0) {
+		Handle_LIMITS(Line, Var, Arg);
+		return "[Limits]";
+	}
+#ifdef SSL_SUPPORT
+	if (strcasecmp(Var, "SSLCertFile") == 0
+	    || strcasecmp(Var, "SSLDHFile") == 0
+	    || strcasecmp(Var, "SSLKeyFile") == 0
+	    || strcasecmp(Var, "SSLKeyFilePassword") == 0
+	    || strcasecmp(Var, "SSLPorts") == 0) {
+		Handle_SSL(Line, Var + 3, Arg);
+		return "[SSL]";
+	}
+#endif
+
+	return NULL;
+}
+
+/**
+ * Strip "no" prefix of a string.
+ *
+ * TODO: This function and support for "NoXXX" should be removed starting
+ * with ngIRCd release 19! (One release after marking it "deprecated").
+ *
+ * @param str	Pointer to input string starting with "no".
+ * @returns	New pointer to string without "no" prefix.
+ */
+static const char *
+NoNo(const char *str)
+{
+	assert(strncasecmp("no", str, 2) == 0 && str[2]);
+	return str + 2;
+}
+
+/**
+ * Invert "boolean" string.
+ *
+ * TODO: This function and support for "NoXXX" should be removed starting
+ * with ngIRCd release 19! (One release after marking it "deprecated").
+ *
+ * @param arg	"Boolean" input string.
+ * @returns	Pointer to inverted "boolean string".
+ */
+static const char *
+InvertArg(const char *arg)
+{
+	return yesno_to_str(!Check_ArgIsTrue(arg));
+}
+
+/**
+ * Handle variable in [Global] configuration section.
+ *
+ * @param Line	Line numer in configuration file.
+ * @param Var	Variable name.
+ * @param Arg	Variable argument.
+ */
 static void
 Handle_GLOBAL( int Line, char *Var, char *Arg )
 {
 	struct passwd *pwd;
 	struct group *grp;
 	size_t len;
-	
-	assert( Line > 0 );
-	assert( Var != NULL );
-	assert( Arg != NULL );
-	
-	if( strcasecmp( Var, "Name" ) == 0 ) {
-		/* Server name */
-		len = strlcpy( Conf_ServerName, Arg, sizeof( Conf_ServerName ));
-		if (len >= sizeof( Conf_ServerName ))
-			Config_Error_TooLong( Line, Var );
+	const char *section;
+
+	assert(Line > 0);
+	assert(Var != NULL);
+	assert(Arg != NULL);
+
+	if (strcasecmp(Var, "Name") == 0) {
+		len = strlcpy(Conf_ServerName, Arg, sizeof(Conf_ServerName));
+		if (len >= sizeof(Conf_ServerName))
+			Config_Error_TooLong(Line, Var);
 		return;
 	}
-	if( strcasecmp( Var, "Info" ) == 0 ) {
-		/* Info text of server */
-		len = strlcpy( Conf_ServerInfo, Arg, sizeof( Conf_ServerInfo ));
-		if (len >= sizeof( Conf_ServerInfo ))
-			Config_Error_TooLong ( Line, Var );
+	if (strcasecmp(Var, "AdminInfo1") == 0) {
+		len = strlcpy(Conf_ServerAdmin1, Arg, sizeof(Conf_ServerAdmin1));
+		if (len >= sizeof(Conf_ServerAdmin1))
+			Config_Error_TooLong(Line, Var);
 		return;
 	}
-	if( strcasecmp( Var, "Password" ) == 0 ) {
-		/* Global server password */
-		len = strlcpy( Conf_ServerPwd, Arg, sizeof( Conf_ServerPwd ));
-		if (len >= sizeof( Conf_ServerPwd ))
-			Config_Error_TooLong( Line, Var );
+	if (strcasecmp(Var, "AdminInfo2") == 0) {
+		len = strlcpy(Conf_ServerAdmin2, Arg, sizeof(Conf_ServerAdmin2));
+		if (len >= sizeof(Conf_ServerAdmin2))
+			Config_Error_TooLong(Line, Var);
 		return;
 	}
-	if( strcasecmp( Var, "AdminInfo1" ) == 0 ) {
-		/* Administrative info #1 */
-		len = strlcpy( Conf_ServerAdmin1, Arg, sizeof( Conf_ServerAdmin1 ));
-		if (len >= sizeof( Conf_ServerAdmin1 ))
-			Config_Error_TooLong ( Line, Var );
+	if (strcasecmp(Var, "AdminEMail") == 0) {
+		len = strlcpy(Conf_ServerAdminMail, Arg,
+			sizeof(Conf_ServerAdminMail));
+		if (len >= sizeof(Conf_ServerAdminMail))
+			Config_Error_TooLong(Line, Var);
 		return;
 	}
-	if( strcasecmp( Var, "AdminInfo2" ) == 0 ) {
-		/* Administrative info #2 */
-		len = strlcpy( Conf_ServerAdmin2, Arg, sizeof( Conf_ServerAdmin2 ));
-		if (len >= sizeof( Conf_ServerAdmin2 ))
-			Config_Error_TooLong ( Line, Var );
+	if (strcasecmp(Var, "Info") == 0) {
+		len = strlcpy(Conf_ServerInfo, Arg, sizeof(Conf_ServerInfo));
+		if (len >= sizeof(Conf_ServerInfo))
+			Config_Error_TooLong(Line, Var);
 		return;
 	}
-	if( strcasecmp( Var, "AdminEMail" ) == 0 ) {
-		/* Administrative email contact */
-		len = strlcpy( Conf_ServerAdminMail, Arg, sizeof( Conf_ServerAdminMail ));
-		if (len >= sizeof( Conf_ServerAdminMail ))
-			Config_Error_TooLong( Line, Var );
+	if (strcasecmp(Var, "Listen") == 0) {
+		if (Conf_ListenAddress) {
+			Config_Error(LOG_ERR,
+				     "Multiple Listen= options, ignoring: %s",
+				     Arg);
+			return;
+		}
+		Conf_ListenAddress = strdup_warn(Arg);
+		/* If allocation fails, we're in trouble: we cannot ignore the
+		 * error -- otherwise ngircd would listen on all interfaces. */
+		if (!Conf_ListenAddress) {
+			Config_Error(LOG_ALERT,
+				     "%s exiting due to fatal errors!",
+				     PACKAGE_NAME);
+			exit(1);
+		}
 		return;
 	}
-
-	if( strcasecmp( Var, "Ports" ) == 0 ) {
-		ports_parse(&Conf_ListenPorts, Line, Arg);
+	if (strcasecmp(Var, "MotdFile") == 0) {
+		len = strlcpy(Conf_MotdFile, Arg, sizeof(Conf_MotdFile));
+		if (len >= sizeof(Conf_MotdFile))
+			Config_Error_TooLong(Line, Var);
 		return;
 	}
-	if( strcasecmp( Var, "MotdFile" ) == 0 ) {
-		/* "Message of the day" (MOTD) file */
-		len = strlcpy( Conf_MotdFile, Arg, sizeof( Conf_MotdFile ));
-		if (len >= sizeof( Conf_MotdFile ))
-			Config_Error_TooLong( Line, Var );
+	if (strcasecmp(Var, "MotdPhrase") == 0) {
+		len = strlen(Arg);
+		if (len == 0)
+			return;
+		if (len >= LINE_LEN) {
+			Config_Error_TooLong(Line, Var);
+			return;
+		}
+		if (!array_copyb(&Conf_Motd, Arg, len + 1))
+			Config_Error(LOG_WARNING,
+				     "%s, line %d: Could not append MotdPhrase: %s",
+				     NGIRCd_ConfFile, Line, strerror(errno));
+		Using_MotdFile = false;
 		return;
 	}
-	if( strcasecmp( Var, "MotdPhrase" ) == 0 ) {
-		/* "Message of the day" phrase (instead of file) */
-		len = strlcpy( Conf_MotdPhrase, Arg, sizeof( Conf_MotdPhrase ));
-		if (len >= sizeof( Conf_MotdPhrase ))
-			Config_Error_TooLong( Line, Var );
+	if(strcasecmp(Var, "Password") == 0) {
+		len = strlcpy(Conf_ServerPwd, Arg, sizeof(Conf_ServerPwd));
+		if (len >= sizeof(Conf_ServerPwd))
+			Config_Error_TooLong(Line, Var);
 		return;
 	}
-	if( strcasecmp( Var, "ChrootDir" ) == 0 ) {
-		/* directory for chroot() */
-		len = strlcpy( Conf_Chroot, Arg, sizeof( Conf_Chroot ));
-		if (len >= sizeof( Conf_Chroot ))
-			Config_Error_TooLong( Line, Var );
+	if (strcasecmp(Var, "PidFile") == 0) {
+		len = strlcpy(Conf_PidFile, Arg, sizeof(Conf_PidFile));
+		if (len >= sizeof(Conf_PidFile))
+			Config_Error_TooLong(Line, Var);
 		return;
 	}
-	if ( strcasecmp( Var, "PidFile" ) == 0 ) {
-		/* name of pidfile */
-		len = strlcpy( Conf_PidFile, Arg, sizeof( Conf_PidFile ));
-		if (len >= sizeof( Conf_PidFile ))
-			Config_Error_TooLong( Line, Var );
+	if (strcasecmp(Var, "Ports") == 0) {
+		ports_parse(&Conf_ListenPorts, Line, Arg);
 		return;
 	}
-	if( strcasecmp( Var, "ServerUID" ) == 0 ) {
-		/* UID the daemon should switch to */
-		pwd = getpwnam( Arg );
-		if( pwd ) Conf_UID = pwd->pw_uid;
+	if (strcasecmp(Var, "ServerGID") == 0) {
+		grp = getgrnam(Arg);
+		if (grp)
+			Conf_GID = grp->gr_gid;
 		else {
-#ifdef HAVE_ISDIGIT
-			if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
-			else
-#endif
-			Conf_UID = (unsigned int)atoi( Arg );
+			Conf_GID = (unsigned int)atoi(Arg);
+			if (!Conf_GID && strcmp(Arg, "0"))
+				Config_Error(LOG_WARNING,
+					     "%s, line %d: Value of \"%s\" is not a valid group name or ID!",
+					     NGIRCd_ConfFile, Line, Var);
 		}
 		return;
 	}
-	if( strcasecmp( Var, "ServerGID" ) == 0 ) {
-		/* GID the daemon should use */
-		grp = getgrnam( Arg );
-		if( grp ) Conf_GID = grp->gr_gid;
+	if (strcasecmp(Var, "ServerUID") == 0) {
+		pwd = getpwnam(Arg);
+		if (pwd)
+			Conf_UID = pwd->pw_uid;
 		else {
-#ifdef HAVE_ISDIGIT
-			if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
-			else
-#endif
-			Conf_GID = (unsigned int)atoi( Arg );
+			Conf_UID = (unsigned int)atoi(Arg);
+			if (!Conf_UID && strcmp(Arg, "0"))
+				Config_Error(LOG_WARNING,
+					     "%s, line %d: Value of \"%s\" is not a valid user name or ID!",
+					     NGIRCd_ConfFile, Line, Var);
 		}
 		return;
 	}
-	if( strcasecmp( Var, "PingTimeout" ) == 0 ) {
-		/* PING timeout */
-		Conf_PingTimeout = atoi( Arg );
-		if( Conf_PingTimeout < 5 ) {
-			Config_Error( LOG_WARNING, "%s, line %d: Value of \"PingTimeout\" too low!",
-									NGIRCd_ConfFile, Line );
-			Conf_PingTimeout = 5;
-		}
+
+	if (CheckLegacyNoOption(Var, Arg)) {
+		/* TODO: This function and support for "NoXXX" could be
+		 * be removed starting with ngIRCd release 19 (one release
+		 * after marking it "deprecated"). */
+		Config_Error(LOG_WARNING,
+			     "%s, line %d (section \"Global\"): \"No\"-Prefix is deprecated, use \"%s = %s\" in [Options] section!",
+			     NGIRCd_ConfFile, Line, NoNo(Var), InvertArg(Arg));
+		if (strcasecmp(Var, "NoIdent") == 0)
+			WarnIdent(Line);
+		else if (strcasecmp(Var, "NoPam") == 0)
+			WarnPAM(Line);
 		return;
 	}
-	if( strcasecmp( Var, "PongTimeout" ) == 0 ) {
-		/* PONG timeout */
-		Conf_PongTimeout = atoi( Arg );
-		if( Conf_PongTimeout < 5 ) {
-			Config_Error( LOG_WARNING, "%s, line %d: Value of \"PongTimeout\" too low!",
-									NGIRCd_ConfFile, Line );
-			Conf_PongTimeout = 5;
+	if ((section = CheckLegacyGlobalOption(Line, Var, Arg))) {
+		/** TODO: This function and support for these options in the
+		 * [Global] section could be removed starting with ngIRCd
+		 * release 19 (one release after marking it "deprecated"). */
+		if (strncasecmp(Var, "SSL", 3) == 0) {
+			Config_Error(LOG_WARNING,
+				     "%s, line %d (section \"Global\"): \"%s\" is deprecated here, move it to %s and rename to \"%s\"!",
+				     NGIRCd_ConfFile, Line, Var, section,
+				     Var + 3);
+		} else {
+			Config_Error(LOG_WARNING,
+				     "%s, line %d (section \"Global\"): \"%s\" is deprecated here, move it to %s!",
+				     NGIRCd_ConfFile, Line, Var, section);
 		}
 		return;
 	}
-	if( strcasecmp( Var, "ConnectRetry" ) == 0 ) {
-		/* Seconds between connection attempts to other servers */
-		Conf_ConnectRetry = atoi( Arg );
-		if( Conf_ConnectRetry < 5 ) {
-			Config_Error( LOG_WARNING, "%s, line %d: Value of \"ConnectRetry\" too low!",
-									NGIRCd_ConfFile, Line );
+
+	Config_Error_Section(Line, Var, "Global");
+}
+
+/**
+ * Handle variable in [Limits] configuration section.
+ *
+ * @param Line	Line numer in configuration file.
+ * @param Var	Variable name.
+ * @param Arg	Variable argument.
+ */
+static void
+Handle_LIMITS(int Line, char *Var, char *Arg)
+{
+	assert(Line > 0);
+	assert(Var != NULL);
+	assert(Arg != NULL);
+
+	if (strcasecmp(Var, "ConnectRetry") == 0) {
+		Conf_ConnectRetry = atoi(Arg);
+		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, "PredefChannelsOnly" ) == 0 ) {
-		/* Should we only allow pre-defined-channels? (i.e. users cannot create their own channels) */
-		Conf_PredefChannelsOnly = Check_ArgIsTrue( Arg );
+	if (strcasecmp(Var, "MaxConnections") == 0) {
+		Conf_MaxConnections = atoi(Arg);
+		if (!Conf_MaxConnections && strcmp(Arg, "0"))
+			Config_Error_NaN(Line, Var);
+		return;
+	}
+	if (strcasecmp(Var, "MaxConnectionsIP") == 0) {
+		Conf_MaxConnectionsIP = atoi(Arg);
+		if (!Conf_MaxConnectionsIP && strcmp(Arg, "0"))
+			Config_Error_NaN(Line, Var);
 		return;
 	}
-	if( strcasecmp( Var, "NoDNS" ) == 0 ) {
-		/* don't do reverse dns lookups when clients connect? */
-		Conf_NoDNS = Check_ArgIsTrue( Arg );
+	if (strcasecmp(Var, "MaxJoins") == 0) {
+		Conf_MaxJoins = atoi(Arg);
+		if (!Conf_MaxJoins && strcmp(Arg, "0"))
+			Config_Error_NaN(Line, Var);
 		return;
 	}
-	if (strcasecmp(Var, "NoIdent") == 0) {
-		/* don't do IDENT lookups when clients connect? */
-		Conf_NoIdent = Check_ArgIsTrue(Arg);
-#ifndef IDENTAUTH
-		if (!Conf_NoIdent) {
-			/* user has enabled ident lookups explicitly, but ... */
+	if (strcasecmp(Var, "MaxNickLength") == 0) {
+		Conf_MaxNickLength = Handle_MaxNickLength(Line, Arg);
+		return;
+	}
+	if (strcasecmp(Var, "MaxListSize") == 0) {
+		Conf_MaxListSize = atoi(Arg);
+		if (!Conf_MaxListSize && strcmp(Arg, "0"))
+			Config_Error_NaN(Line, Var);
+		return;
+	}
+	if (strcasecmp(Var, "PingTimeout") == 0) {
+		Conf_PingTimeout = atoi(Arg);
+		if (Conf_PingTimeout < 5) {
 			Config_Error(LOG_WARNING,
-				"%s: line %d: NoIdent=False, but ngircd was built without IDENT support",
-				NGIRCd_ConfFile, Line);
+				     "%s, line %d: Value of \"PingTimeout\" too low!",
+				     NGIRCd_ConfFile, Line);
+			Conf_PingTimeout = 5;
 		}
-#endif
 		return;
 	}
-#ifdef WANT_IPV6
-	/* the default setting for all the WANT_IPV6 special options is 'true' */
-	if( strcasecmp( Var, "ConnectIPv6" ) == 0 ) {
-		/* connect to other hosts using ipv6, if they have an AAAA record? */
-		Conf_ConnectIPv6 = Check_ArgIsTrue( Arg );
+	if (strcasecmp(Var, "PongTimeout") == 0) {
+		Conf_PongTimeout = atoi(Arg);
+		if (Conf_PongTimeout < 5) {
+			Config_Error(LOG_WARNING,
+				     "%s, line %d: Value of \"PongTimeout\" too low!",
+				     NGIRCd_ConfFile, Line);
+			Conf_PongTimeout = 5;
+		}
+		return;
+	}
+
+	Config_Error_Section(Line, Var, "Limits");
+}
+
+/**
+ * Handle variable in [Options] configuration section.
+ *
+ * @param Line	Line numer in configuration file.
+ * @param Var	Variable name.
+ * @param Arg	Variable argument.
+ */
+static void
+Handle_OPTIONS(int Line, char *Var, char *Arg)
+{
+	size_t len;
+
+	assert(Line > 0);
+	assert(Var != NULL);
+	assert(Arg != NULL);
+
+	if (strcasecmp(Var, "AllowRemoteOper") == 0) {
+		Conf_AllowRemoteOper = Check_ArgIsTrue(Arg);
 		return;
 	}
-	if( strcasecmp( Var, "ConnectIPv4" ) == 0 ) {
-		/* connect to other hosts using ipv4.
-		 * again, this can be used for ipv6-only setups */
-		Conf_ConnectIPv4 = Check_ArgIsTrue( Arg );
+	if (strcasecmp(Var, "ChrootDir") == 0) {
+		len = strlcpy(Conf_Chroot, Arg, sizeof(Conf_Chroot));
+		if (len >= sizeof(Conf_Chroot))
+			Config_Error_TooLong(Line, Var);
 		return;
 	}
-#endif
-	if( strcasecmp( Var, "OperCanUseMode" ) == 0 ) {
-		/* Are IRC operators allowed to use MODE in channels they aren't Op in? */
-		Conf_OperCanMode = Check_ArgIsTrue( Arg );
+	if (strcasecmp(Var, "CloakHost") == 0) {
+		len = strlcpy(Conf_CloakHost, Arg, sizeof(Conf_CloakHost));
+		if (len >= sizeof(Conf_CloakHost))
+			Config_Error_TooLong(Line, Var);
 		return;
 	}
-	if( strcasecmp( Var, "OperServerMode" ) == 0 ) {
-		/* Mask IRC operator as if coming from the server? (ircd-irc2 compat hack) */
-		Conf_OperServerMode = Check_ArgIsTrue( Arg );
+	if (strcasecmp(Var, "CloakHostModeX") == 0) {
+		len = strlcpy(Conf_CloakHostModeX, Arg, sizeof(Conf_CloakHostModeX));
+		if (len >= sizeof(Conf_CloakHostModeX))
+			Config_Error_TooLong(Line, Var);
 		return;
 	}
-	if( strcasecmp( Var, "MaxConnections" ) == 0 ) {
-		/* Maximum number of connections. 0 -> "no limit". */
-#ifdef HAVE_ISDIGIT
-		if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var);
-		else
-#endif
-		Conf_MaxConnections = atol( Arg );
+	if (strcasecmp(Var, "CloakHostSalt") == 0) {
+		len = strlcpy(Conf_CloakHostSalt, Arg, sizeof(Conf_CloakHostSalt));
+		if (len >= sizeof(Conf_CloakHostSalt))
+			Config_Error_TooLong(Line, Var);
 		return;
 	}
-	if( strcasecmp( Var, "MaxConnectionsIP" ) == 0 ) {
-		/* Maximum number of simultaneous connections from one IP. 0 -> "no limit" */
-#ifdef HAVE_ISDIGIT
-		if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
-		else
-#endif
-		Conf_MaxConnectionsIP = atoi( Arg );
+	if (strcasecmp(Var, "CloakUserToNick") == 0) {
+		Conf_CloakUserToNick = Check_ArgIsTrue(Arg);
+		return;
+	}
+	if (strcasecmp(Var, "ConnectIPv6") == 0) {
+		Conf_ConnectIPv6 = Check_ArgIsTrue(Arg);
+		WarnIPv6(Line);
+		return;
+	}
+	if (strcasecmp(Var, "ConnectIPv4") == 0) {
+		Conf_ConnectIPv4 = Check_ArgIsTrue(Arg);
+		return;
+	}
+	if (strcasecmp(Var, "DNS") == 0) {
+		Conf_DNS = Check_ArgIsTrue(Arg);
+		return;
+	}
+	if (strcasecmp(Var, "Ident") == 0) {
+		Conf_Ident = Check_ArgIsTrue(Arg);
+		WarnIdent(Line);
+		return;
+	}
+	if (strcasecmp(Var, "MorePrivacy") == 0) {
+		Conf_MorePrivacy = Check_ArgIsTrue(Arg);
+		return;
+	}
+	if (strcasecmp(Var, "NoticeAuth") == 0) {
+		Conf_NoticeAuth = Check_ArgIsTrue(Arg);
+		return;
+	}
+	if (strcasecmp(Var, "OperCanUseMode") == 0) {
+		Conf_OperCanMode = Check_ArgIsTrue(Arg);
+		return;
+	}
+	if (strcasecmp(Var, "OperChanPAutoOp") == 0) {
+		Conf_OperChanPAutoOp = Check_ArgIsTrue(Arg);
+		return;
+	}
+	if (strcasecmp(Var, "OperServerMode") == 0) {
+		Conf_OperServerMode = Check_ArgIsTrue(Arg);
+		return;
+	}
+	if (strcasecmp(Var, "PAM") == 0) {
+		Conf_PAM = Check_ArgIsTrue(Arg);
+		WarnPAM(Line);
+		return;
+	}
+	if (strcasecmp(Var, "PAMIsOptional") == 0 ) {
+		Conf_PAMIsOptional = Check_ArgIsTrue(Arg);
+		return;
+	}
+	if (strcasecmp(Var, "PredefChannelsOnly") == 0) {
+		Conf_PredefChannelsOnly = Check_ArgIsTrue(Arg);
+		return;
+	}
+#ifndef STRICT_RFC
+	if (strcasecmp(Var, "RequireAuthPing") == 0) {
+		Conf_AuthPing = Check_ArgIsTrue(Arg);
 		return;
 	}
-	if( strcasecmp( Var, "MaxJoins" ) == 0 ) {
-		/* Maximum number of channels a user can join. 0 -> "no limit". */
-#ifdef HAVE_ISDIGIT
-		if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
-		else
 #endif
-		Conf_MaxJoins = atoi( Arg );
+	if (strcasecmp(Var, "ScrubCTCP") == 0) {
+		Conf_ScrubCTCP = Check_ArgIsTrue(Arg);
 		return;
 	}
-	if( strcasecmp( Var, "MaxNickLength" ) == 0 ) {
-		/* Maximum length of a nick name; must be same on all servers
-		 * within the IRC network! */
-		Conf_MaxNickLength = Handle_MaxNickLength(Line, Arg);
+#ifdef SYSLOG
+	if (strcasecmp(Var, "SyslogFacility") == 0) {
+		Conf_SyslogFacility = ngt_SyslogFacilityID(Arg,
+							   Conf_SyslogFacility);
 		return;
 	}
-
-	if( strcasecmp( Var, "Listen" ) == 0 ) {
-		/* IP-Address to bind sockets */
-		if (Conf_ListenAddress) {
-			Config_Error(LOG_ERR, "Multiple Listen= options, ignoring: %s", Arg);
-			return;
-		}
-		Conf_ListenAddress = strdup_warn(Arg);
-		/*
-		 * if allocation fails, we're in trouble:
-		 * we cannot ignore the error -- otherwise ngircd
-		 * would listen on all interfaces.
-		 */
-		if (!Conf_ListenAddress) {
-			Config_Error(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
-			exit(1);
-		}
+#endif
+	if (strcasecmp(Var, "WebircPassword") == 0) {
+		len = strlcpy(Conf_WebircPwd, Arg, sizeof(Conf_WebircPwd));
+		if (len >= sizeof(Conf_WebircPwd))
+			Config_Error_TooLong(Line, Var);
 		return;
 	}
 
+	Config_Error_Section(Line, Var, "Options");
+}
+
 #ifdef SSL_SUPPORT
-	if( strcasecmp( Var, "SSLPorts" ) == 0 ) {
-		ports_parse(&Conf_SSLOptions.ListenPorts, Line, Arg);
+
+/**
+ * Handle variable in [SSL] configuration section.
+ *
+ * @param Line	Line numer in configuration file.
+ * @param Var	Variable name.
+ * @param Arg	Variable argument.
+ */
+static void
+Handle_SSL(int Line, char *Var, char *Arg)
+{
+	assert(Line > 0);
+	assert(Var != NULL);
+	assert(Arg != NULL);
+
+	if (strcasecmp(Var, "CertFile") == 0) {
+		assert(Conf_SSLOptions.CertFile == NULL);
+		Conf_SSLOptions.CertFile = strdup_warn(Arg);
 		return;
 	}
-
-	if( strcasecmp( Var, "SSLKeyFile" ) == 0 ) {
-		assert(Conf_SSLOptions.KeyFile == NULL );
-		Conf_SSLOptions.KeyFile = strdup_warn(Arg);
+	if (strcasecmp(Var, "DHFile") == 0) {
+		assert(Conf_SSLOptions.DHFile == NULL);
+		Conf_SSLOptions.DHFile = strdup_warn(Arg);
 		return;
 	}
-	if( strcasecmp( Var, "SSLCertFile" ) == 0 ) {
-		assert(Conf_SSLOptions.CertFile == NULL );
-		Conf_SSLOptions.CertFile = strdup_warn(Arg);
+	if (strcasecmp(Var, "KeyFile") == 0) {
+		assert(Conf_SSLOptions.KeyFile == NULL);
+		Conf_SSLOptions.KeyFile = strdup_warn(Arg);
 		return;
 	}
-
-	if( strcasecmp( Var, "SSLKeyFilePassword" ) == 0 ) {
+	if (strcasecmp(Var, "KeyFilePassword") == 0) {
 		assert(array_bytes(&Conf_SSLOptions.KeyFilePassword) == 0);
 		if (!array_copys(&Conf_SSLOptions.KeyFilePassword, Arg))
-			Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Could not copy %s: %s!",
-								NGIRCd_ConfFile, Line, Var, strerror(errno));
+			Config_Error(LOG_ERR,
+				     "%s, line %d (section \"SSL\"): Could not copy %s: %s!",
+				     NGIRCd_ConfFile, Line, Var,
+				     strerror(errno));
+		return;
+	}
+	if (strcasecmp(Var, "Ports") == 0) {
+		ports_parse(&Conf_SSLOptions.ListenPorts, Line, Arg);
 		return;
 	}
-	if( strcasecmp( Var, "SSLDHFile" ) == 0 ) {
-		assert(Conf_SSLOptions.DHFile == NULL);
-		Conf_SSLOptions.DHFile = strdup_warn( Arg );
-                return;
-        }
-#endif
-	Config_Error(LOG_ERR, "%s, line %d (section \"Global\"): Unknown variable \"%s\"!",
-								NGIRCd_ConfFile, Line, Var);
-} /* Handle_GLOBAL */
 
+	Config_Error_Section(Line, Var, "SSL");
+}
 
+#endif
+
+/**
+ * Handle variable in [Operator] configuration section.
+ *
+ * @param Line	Line numer in configuration file.
+ * @param Var	Variable name.
+ * @param Arg	Variable argument.
+ */
 static void
 Handle_OPERATOR( int Line, char *Var, char *Arg )
 {
-	unsigned int opercount;
 	size_t len;
+	struct Conf_Oper *op;
+
 	assert( Line > 0 );
 	assert( Var != NULL );
 	assert( Arg != NULL );
-	assert( Conf_Oper_Count > 0 );
 
-	if ( Conf_Oper_Count == 0 )
+	op = array_get(&Conf_Opers, sizeof(*op),
+			 array_length(&Conf_Opers, sizeof(*op)) - 1);
+	if (!op)
 		return;
 
-	opercount = Conf_Oper_Count - 1;
-
-	if( strcasecmp( Var, "Name" ) == 0 ) {
+	if (strcasecmp(Var, "Name") == 0) {
 		/* Name of IRC operator */
-		len = strlcpy( Conf_Oper[opercount].name, Arg, sizeof( Conf_Oper[opercount].name ));
-		if (len >= sizeof( Conf_Oper[opercount].name ))
-				Config_Error_TooLong( Line, Var );
+		len = strlcpy(op->name, Arg, sizeof(op->name));
+		if (len >= sizeof(op->name))
+				Config_Error_TooLong(Line, Var);
 		return;
 	}
-	if( strcasecmp( Var, "Password" ) == 0 ) {
+	if (strcasecmp(Var, "Password") == 0) {
 		/* Password of IRC operator */
-		len = strlcpy( Conf_Oper[opercount].pwd, Arg, sizeof( Conf_Oper[opercount].pwd ));
-		if (len >= sizeof( Conf_Oper[opercount].pwd ))
-				Config_Error_TooLong( Line, Var );
+		len = strlcpy(op->pwd, Arg, sizeof(op->pwd));
+		if (len >= sizeof(op->pwd))
+				Config_Error_TooLong(Line, Var);
 		return;
 	}
-	if( strcasecmp( Var, "Mask" ) == 0 ) {
-		if (Conf_Oper[opercount].mask) return; /* Hostname already configured */
-
-		Conf_Oper[opercount].mask = strdup_warn( Arg );
+	if (strcasecmp(Var, "Mask") == 0) {
+		if (op->mask)
+			return; /* Hostname already configured */
+		op->mask = strdup_warn( Arg );
 		return;
 	}
-	Config_Error( LOG_ERR, "%s, line %d (section \"Operator\"): Unknown variable \"%s\"!",
-								NGIRCd_ConfFile, Line, Var );
-} /* Handle_OPERATOR */
 
+	Config_Error_Section(Line, Var, "Operator");
+}
 
+/**
+ * Handle variable in [Server] configuration section.
+ *
+ * @param Line	Line numer in configuration file.
+ * @param Var	Variable name.
+ * @param Arg	Variable argument.
+ */
 static void
 Handle_SERVER( int Line, char *Var, char *Arg )
 {
 	long port;
 	size_t len;
-	
+
 	assert( Line > 0 );
 	assert( Var != NULL );
 	assert( Arg != NULL );
@@ -1123,11 +1775,12 @@ Handle_SERVER( int Line, char *Var, char *Arg )
 	if( strcasecmp( Var, "Port" ) == 0 ) {
 		/* Port to which this server should connect */
 		port = atol( Arg );
-		if( port > 0 && port < 0xFFFF )
+		if (port >= 0 && port < 0xFFFF)
 			New_Server.port = (UINT16)port;
 		else
-			Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Illegal port number %ld!",
-										NGIRCd_ConfFile, Line, port );
+			Config_Error(LOG_ERR,
+				"%s, line %d (section \"Server\"): Illegal port number %ld!",
+				NGIRCd_ConfFile, Line, port );
 		return;
 	}
 #ifdef SSL_SUPPORT
@@ -1138,12 +1791,9 @@ Handle_SERVER( int Line, char *Var, char *Arg )
 #endif
 	if( strcasecmp( Var, "Group" ) == 0 ) {
 		/* Server group */
-#ifdef HAVE_ISDIGIT
-		if( ! isdigit( (int)*Arg ))
-			Config_Error_NaN( Line, Var );
-		else
-#endif
 		New_Server.group = atoi( Arg );
+		if (!New_Server.group && strcmp(Arg, "0"))
+			Config_Error_NaN(Line, Var);
 		return;
 	}
 	if( strcasecmp( Var, "Passive" ) == 0 ) {
@@ -1159,11 +1809,19 @@ Handle_SERVER( int Line, char *Var, char *Arg )
 		return;
 	}
 
-	Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Unknown variable \"%s\"!",
-								NGIRCd_ConfFile, Line, Var );
-} /* Handle_SERVER */
-
+	Config_Error_Section(Line, Var, "Server");
+}
 
+/**
+ * Copy channel name into channel structure.
+ *
+ * If the channel name is not valid because of a missing prefix ('#', '&'),
+ * a default prefix of '#' will be added.
+ *
+ * @param new_chan	New already allocated channel structure.
+ * @param name		Name of the new channel.
+ * @returns		true on success, false otherwise.
+ */
 static bool
 Handle_Channelname(struct Conf_Channel *new_chan, const char *name)
 {
@@ -1182,26 +1840,28 @@ Handle_Channelname(struct Conf_Channel *new_chan, const char *name)
 	return size > strlcpy(dest, name, size);
 }
 
-
+/**
+ * Handle variable in [Channel] configuration section.
+ *
+ * @param Line	Line numer in configuration file.
+ * @param Var	Variable name.
+ * @param Arg	Variable argument.
+ */
 static void
 Handle_CHANNEL(int Line, char *Var, char *Arg)
 {
 	size_t len;
-	size_t chancount;
 	struct Conf_Channel *chan;
 
 	assert( Line > 0 );
 	assert( Var != NULL );
 	assert( Arg != NULL );
-	assert(Conf_Channel_Count > 0);
-
-	chancount = Conf_Channel_Count - 1;
 
-	chan = array_alloc(&Conf_Channels, sizeof(*chan), chancount);
-	if (!chan) {
-		Config_Error(LOG_ERR, "Could not allocate memory for predefined channel (%d:%s = %s)", Line, Var, Arg);
+	chan = array_get(&Conf_Channels, sizeof(*chan),
+			 array_length(&Conf_Channels, sizeof(*chan)) - 1);
+	if (!chan)
 		return;
-	}
+
 	if (strcasecmp(Var, "Name") == 0) {
 		if (!Handle_Channelname(chan, Arg))
 			Config_Error_TooLong(Line, Var);
@@ -1231,7 +1891,7 @@ Handle_CHANNEL(int Line, char *Var, char *Arg)
 	if( strcasecmp( Var, "MaxUsers" ) == 0 ) {
 		/* maximum user limit, mode l */
 		chan->maxusers = (unsigned long) atol(Arg);
-		if (chan->maxusers == 0)
+		if (!chan->maxusers && strcmp(Arg, "0"))
 			Config_Error_NaN(Line, Var);
 		return;
 	}
@@ -1243,11 +1903,19 @@ Handle_CHANNEL(int Line, char *Var, char *Arg)
 		return;
 	}
 
-	Config_Error( LOG_ERR, "%s, line %d (section \"Channel\"): Unknown variable \"%s\"!",
-								NGIRCd_ConfFile, Line, Var );
-} /* Handle_CHANNEL */
-
+	Config_Error_Section(Line, Var, "Channel");
+}
 
+/**
+ * Validate server configuration.
+ *
+ * Please note that this function uses exit(1) on fatal errors and therefore
+ * can result in ngIRCd terminating!
+ *
+ * @param Configtest	true if the daemon has been called with "--configtest".
+ * @param Rehash	true if re-reading configuration on runtime.
+ * @returns		true if configuration is valid.
+ */
 static bool
 Validate_Config(bool Configtest, bool Rehash)
 {
@@ -1259,6 +1927,13 @@ Validate_Config(bool Configtest, bool Rehash)
 	bool config_valid = true;
 	char *ptr;
 
+	/* Emit a warning when the config file is not a full path name */
+	if (NGIRCd_ConfFile[0] && NGIRCd_ConfFile[0] != '/') {
+		Config_Error(LOG_WARNING,
+			"Not specifying a full path name to \"%s\" can cause problems when rehashing the server!",
+			NGIRCd_ConfFile);
+	}
+
 	/* Validate configured server name, see RFC 2812 section 2.3.1 */
 	ptr = Conf_ServerName;
 	do {
@@ -1324,6 +1999,12 @@ Validate_Config(bool Configtest, bool Rehash)
 			     "No administrative information configured but required by RFC!");
 	}
 
+#ifdef PAM
+	if (Conf_ServerPwd[0])
+		Config_Error(LOG_ERR,
+			     "This server uses PAM, \"Password\" in [Global] section will be ignored!");
+#endif
+
 #ifdef DEBUG
 	servers = servers_once = 0;
 	for (i = 0; i < MAX_SERVERS; i++) {
@@ -1334,21 +2015,47 @@ Validate_Config(bool Configtest, bool Rehash)
 		}
 	}
 	Log(LOG_DEBUG,
-	    "Configuration: Operators=%d, Servers=%d[%d], Channels=%d",
-	    Conf_Oper_Count, servers, servers_once, Conf_Channel_Count);
+	    "Configuration: Operators=%ld, Servers=%d[%d], Channels=%ld",
+	    array_length(&Conf_Opers, sizeof(struct Conf_Oper)),
+	    servers, servers_once,
+	    array_length(&Conf_Channels, sizeof(struct Conf_Channel)));
 #endif
 
 	return config_valid;
-} /* Validate_Config */
-
+}
 
+/**
+ * Output "line too long" warning.
+ *
+ * @param Line	Line number in configuration file.
+ * @param Item	Affected variable name.
+ */
 static void
 Config_Error_TooLong ( const int Line, const char *Item )
 {
 	Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" too long!", NGIRCd_ConfFile, Line, Item );
 }
 
+/**
+ * Output "unknown variable" warning.
+ *
+ * @param Line		Line number in configuration file.
+ * @param Item		Affected variable name.
+ * @param Section	Section name.
+ */
+static void
+Config_Error_Section(const int Line, const char *Item, const char *Section)
+{
+	Config_Error(LOG_ERR, "%s, line %d (section \"%s\"): Unknown variable \"%s\"!",
+		     NGIRCd_ConfFile, Line, Section, Item);
+}
 
+/**
+ * Output "not a number" warning.
+ *
+ * @param Line	Line number in configuration file.
+ * @param Item	Affected variable name.
+ */
 static void
 Config_Error_NaN( const int Line, const char *Item )
 {
@@ -1356,7 +2063,16 @@ Config_Error_NaN( const int Line, const char *Item )
 						NGIRCd_ConfFile, Line, Item );
 }
 
-
+/**
+ * Output configuration error to console and/or logfile.
+ *
+ * On runtime, the normal log functions of the daemon are used. But when
+ * testing the configuration ("--configtest"), all messages go directly
+ * to the console.
+ *
+ * @param Level		Severity level of the message.
+ * @param Format	Format string; see printf() function.
+ */
 #ifdef PROTOTYPES
 static void Config_Error( const int Level, const char *Format, ... )
 #else
@@ -1366,8 +2082,6 @@ const char *Format;
 va_dcl
 #endif
 {
-	/* Error! Write to console and/or logfile. */
-
 	char msg[MAX_LOG_MSG_LEN];
 	va_list ap;
 
@@ -1380,20 +2094,49 @@ va_dcl
 #endif
 	vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
 	va_end( ap );
-	
-	/* 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 */
 
+	if (!Use_Log) {
+		if (Level <= LOG_WARNING)
+			printf(" - %s\n", msg);
+		else
+			puts(msg);
+	} else
+		Log(Level, "%s", msg);
+}
 
+#ifdef DEBUG
+
+/**
+ * Dump internal state of the "configuration module".
+ */
+GLOBAL void
+Conf_DebugDump(void)
+{
+	int i;
+
+	Log(LOG_DEBUG, "Configured servers:");
+	for (i = 0; i < MAX_SERVERS; i++) {
+		if (! Conf_Server[i].name[0])
+			continue;
+		Log(LOG_DEBUG,
+		    " - %s: %s:%d, last=%ld, group=%d, flags=%d, conn=%d",
+		    Conf_Server[i].name, Conf_Server[i].host,
+		    Conf_Server[i].port, Conf_Server[i].lasttry,
+		    Conf_Server[i].group, Conf_Server[i].flags,
+		    Conf_Server[i].conn_id);
+	}
+}
+
+#endif
+
+/**
+ * Initialize server configuration structur to default values.
+ *
+ * @param Server	Pointer to server structure to initialize.
+ */
 static void
 Init_Server_Struct( CONF_SERVER *Server )
 {
-	/* Initialize server configuration structur to default values */
-
 	assert( Server != NULL );
 
 	memset( Server, 0, sizeof (CONF_SERVER) );
@@ -1403,10 +2146,9 @@ Init_Server_Struct( CONF_SERVER *Server )
 
 	if( NGIRCd_Passive ) Server->flags = CONF_SFLAG_DISABLED;
 
-	Resolve_Init(&Server->res_stat);
+	Proc_InitStruct(&Server->res_stat);
 	Server->conn_id = NONE;
-	memset(&Server->bind_addr, 0, sizeof(&Server->bind_addr));
-} /* Init_Server_Struct */
-
+	memset(&Server->bind_addr, 0, sizeof(Server->bind_addr));
+}
 
 /* -eof- */