X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd-alex.git;a=blobdiff_plain;f=src%2Fngircd%2Fchannel.c;h=6b8d74530c7c07c71c532e2379387c97bf1596a3;hp=6958831ad79ce678db1c3c58366cf54b328dd75a;hb=8ae2cdfce9f8ba75fe72d65603d4c05c87f6d9c2;hpb=18efc7469c5923a298a218ee2d17f518cff184fa

diff --git a/src/ngircd/channel.c b/src/ngircd/channel.c
index 6958831a..6b8d7453 100644
--- a/src/ngircd/channel.c
+++ b/src/ngircd/channel.c
@@ -1,44 +1,45 @@
 /*
  * ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2008 by Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2013 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.
- *
- * Channel management
  */
 
-
 #define __channel_c__
 
-
 #include "portab.h"
 
+/**
+ * @file
+ * Channel management
+ */
+
 #include "imp.h"
 #include <assert.h>
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
+#include <stdio.h>
 #include <strings.h>
 
 #include "defines.h"
 #include "conn-func.h"
-#include "client.h"
 
 #include "exp.h"
 #include "channel.h"
 
 #include "imp.h"
 #include "irc-write.h"
-#include "resolve.h"
 #include "conf.h"
 #include "hash.h"
 #include "lists.h"
 #include "log.h"
 #include "messages.h"
+#include "match.h"
 
 #include "exp.h"
 
@@ -57,22 +58,16 @@ static CL2CHAN *Add_Client PARAMS(( CHANNEL *Chan, CLIENT *Client ));
 static bool Remove_Client PARAMS(( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, const char *Reason, bool InformServer ));
 static CL2CHAN *Get_First_Cl2Chan PARAMS(( CLIENT *Client, CHANNEL *Chan ));
 static CL2CHAN *Get_Next_Cl2Chan PARAMS(( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan ));
-static bool Delete_Channel PARAMS(( CHANNEL *Chan ));
+static void Delete_Channel PARAMS(( CHANNEL *Chan ));
+static void Free_Channel PARAMS(( CHANNEL *Chan ));
+static void Set_KeyFile PARAMS((CHANNEL *Chan, const char *KeyFile));
 
 
 GLOBAL void
 Channel_Init( void )
 {
-	CHANNEL *sc;
-
 	My_Channels = NULL;
 	My_Cl2Chan = NULL;
-
-	sc = Channel_Create("&SERVER");
-	if (sc) {
-		Channel_SetModes(sc, "mnPt");
-		Channel_SetTopic(sc, Client_ThisServer(), "Server Messages");
-	}
 } /* Channel_Init */
 
 
@@ -84,6 +79,14 @@ Channel_GetListBans(CHANNEL *c)
 }
 
 
+GLOBAL struct list_head *
+Channel_GetListExcepts(CHANNEL *c)
+{
+	assert(c != NULL);
+	return &c->list_excepts;
+}
+
+
 GLOBAL struct list_head *
 Channel_GetListInvites(CHANNEL *c)
 {
@@ -92,11 +95,12 @@ Channel_GetListInvites(CHANNEL *c)
 }
 
 
+/**
+ * Generate predefined persistent channels and &SERVER
+ */
 GLOBAL void
 Channel_InitPredefined( void )
 {
-	/* Generate predefined persistent channels */
-
 	CHANNEL *new_chan;
 	const struct Conf_Channel *conf_chan;
 	const char *c;
@@ -107,25 +111,32 @@ Channel_InitPredefined( void )
 	assert(channel_count == 0 || conf_chan != NULL);
 
 	for (i = 0; i < channel_count; i++, conf_chan++) {
-		if (!conf_chan->name[0] || !Channel_IsValidName(conf_chan->name)) {
-			Log(LOG_ERR, "Can't create pre-defined channel: invalid name: \"%s\"",
-									conf_chan->name);
+		if (!conf_chan->name[0])
+			continue;
+		if (!Channel_IsValidName(conf_chan->name)) {
+			Log(LOG_ERR,
+			    "Can't create pre-defined channel: invalid name: \"%s\"",
+			    conf_chan->name);
 			continue;
 		}
 
 		new_chan = Channel_Search(conf_chan->name);
 		if (new_chan) {
-			Log(LOG_INFO, "Can't create pre-defined channel \"%s\": name already in use.",
-										conf_chan->name);
+			Log(LOG_INFO,
+			    "Can't create pre-defined channel \"%s\": name already in use.",
+			    conf_chan->name);
+			Set_KeyFile(new_chan, conf_chan->keyfile);
 			continue;
 		}
 
 		new_chan = Channel_Create(conf_chan->name);
 		if (!new_chan) {
-			Log(LOG_ERR, "Can't create pre-defined channel \"%s\"",
+			Log(LOG_ERR, "Can't create pre-defined channel \"%s\"!",
 							conf_chan->name);
 			continue;
 		}
+		Log(LOG_INFO, "Created pre-defined channel \"%s\".",
+						conf_chan->name);
 
 		Channel_ModeAdd(new_chan, 'P');
 
@@ -138,14 +149,38 @@ Channel_InitPredefined( void )
 
 		Channel_SetKey(new_chan, conf_chan->key);
 		Channel_SetMaxUsers(new_chan, conf_chan->maxusers);
-		Log(LOG_INFO, "Created pre-defined channel \"%s\"",
-						conf_chan->name);
+		Set_KeyFile(new_chan, conf_chan->keyfile);
 	}
 	if (channel_count)
 		array_free(&Conf_Channels);
+
+	/* Make sure the local &SERVER channel exists */
+	if (!Channel_Search("&SERVER")) {
+		new_chan = Channel_Create("&SERVER");
+		if (new_chan) {
+			Channel_SetModes(new_chan, "mnPt");
+			Channel_SetTopic(new_chan, Client_ThisServer(),
+					 "Server Messages");
+		} else
+			Log(LOG_ERR, "Failed to create \"&SERVER\" channel!");
+	} else
+		LogDebug("Required channel \"&SERVER\" already exists, ok.");
 } /* Channel_InitPredefined */
 
 
+static void
+Free_Channel(CHANNEL *chan)
+{
+	array_free(&chan->topic);
+	array_free(&chan->keyfile);
+	Lists_Free(&chan->list_bans);
+	Lists_Free(&chan->list_excepts);
+	Lists_Free(&chan->list_invites);
+
+	free(chan);
+}
+
+
 GLOBAL void
 Channel_Exit( void )
 {
@@ -154,20 +189,17 @@ Channel_Exit( void )
 
 	/* free struct Channel */
 	c = My_Channels;
-	while( c )
-	{
+	while (c) {
 		c_next = c->next;
-		array_free(&c->topic);
-		free( c );
+		Free_Channel(c);
 		c = c_next;
 	}
 
 	/* Free Channel allocation table */
 	cl2chan = My_Cl2Chan;
-	while( c )
-	{
+	while (cl2chan) {
 		cl2chan_next = cl2chan->next;
-		free( cl2chan );
+		free(cl2chan);
 		cl2chan = cl2chan_next;
 	}
 } /* Channel_Exit */
@@ -182,7 +214,7 @@ Channel_Exit( void )
  * Add_Client().
  */
 GLOBAL bool
-Channel_Join( CLIENT *Client, char *Name )
+Channel_Join( CLIENT *Client, const char *Name )
 {
 	CHANNEL *chan;
 
@@ -191,7 +223,7 @@ Channel_Join( CLIENT *Client, char *Name )
 
 	/* Check that the channel name is valid */
 	if (! Channel_IsValidName(Name)) {
-		IRC_WriteStrClient(Client, ERR_NOSUCHCHANNEL_MSG,
+		IRC_WriteErrClient(Client, ERR_NOSUCHCHANNEL_MSG,
 				   Client_ID(Client), Name);
 		return false;
 	}
@@ -236,18 +268,21 @@ Channel_Part(CLIENT * Client, CLIENT * Origin, const char *Name, const char *Rea
 	/* Check that specified channel exists */
 	chan = Channel_Search(Name);
 	if (!chan) {
-		IRC_WriteStrClient(Client, ERR_NOSUCHCHANNEL_MSG,
+		IRC_WriteErrClient(Client, ERR_NOSUCHCHANNEL_MSG,
 				   Client_ID(Client), Name);
 		return false;
 	}
 
 	/* Check that the client is in the channel */
 	if (!Get_Cl2Chan(chan, Client)) {
-		IRC_WriteStrClient(Client, ERR_NOTONCHANNEL_MSG,
+		IRC_WriteErrClient(Client, ERR_NOTONCHANNEL_MSG,
 				   Client_ID(Client), Name);
 		return false;
 	}
 
+	if (Conf_MorePrivacy)
+		Reason = "";
+
 	/* Part client from channel */
 	if (!Remove_Client(REMOVE_PART, chan, Client, Origin, Reason, true))
 		return false;
@@ -264,6 +299,7 @@ Channel_Kick(CLIENT *Peer, CLIENT *Target, CLIENT *Origin, const char *Name,
 	     const char *Reason )
 {
 	CHANNEL *chan;
+	bool can_kick = false;
 
 	assert(Peer != NULL);
 	assert(Target != NULL);
@@ -273,9 +309,9 @@ Channel_Kick(CLIENT *Peer, CLIENT *Target, CLIENT *Origin, const char *Name,
 
 	/* Check that channel exists */
 	chan = Channel_Search( Name );
-	if( ! chan )
-	{
-		IRC_WriteStrClient( Origin, ERR_NOSUCHCHANNEL_MSG, Client_ID( Origin ), Name );
+	if (!chan) {
+		IRC_WriteErrClient(Origin, ERR_NOSUCHCHANNEL_MSG,
+				   Client_ID(Origin), Name);
 		return;
 	}
 
@@ -283,14 +319,7 @@ Channel_Kick(CLIENT *Peer, CLIENT *Target, CLIENT *Origin, const char *Name,
 	    Client_Type(Origin) != CLIENT_SERVICE) {
 		/* Check that user is on the specified channel */
 		if (!Channel_IsMemberOf(chan, Origin)) {
-			IRC_WriteStrClient( Origin, ERR_NOTONCHANNEL_MSG,
-					   Client_ID(Origin), Name);
-			return;
-		}
-
-		/* Check if user has operator status */
-		if (!strchr(Channel_UserModes(chan, Origin), 'o')) {
-			IRC_WriteStrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG,
+			IRC_WriteErrClient(Origin, ERR_NOTONCHANNEL_MSG,
 					   Client_ID(Origin), Name);
 			return;
 		}
@@ -298,24 +327,71 @@ Channel_Kick(CLIENT *Peer, CLIENT *Target, CLIENT *Origin, const char *Name,
 
 	/* Check that the client to be kicked is on the specified channel */
 	if (!Channel_IsMemberOf(chan, Target)) {
-		IRC_WriteStrClient(Origin, ERR_USERNOTINCHANNEL_MSG,
+		IRC_WriteErrClient(Origin, ERR_USERNOTINCHANNEL_MSG,
 				   Client_ID(Origin), Client_ID(Target), Name );
 		return;
 	}
 
+	if(Client_Type(Peer) == CLIENT_USER) {
+		/* Channel mode 'Q' and user mode 'q' on target: nobody but
+		 * IRC Operators and servers can kick the target user */
+		if ((Channel_HasMode(chan, 'Q')
+		     || Client_HasMode(Target, 'q')
+		     || Client_Type(Target) == CLIENT_SERVICE)
+		    && !Client_HasMode(Origin, 'o')) {
+			IRC_WriteErrClient(Origin, ERR_KICKDENY_MSG,
+					   Client_ID(Origin), Name,
+					   Client_ID(Target));
+			return;
+		}
+
+		/* Check if client has the rights to kick target */
+
+		/* Owner can kick everyone */
+		if (Channel_UserHasMode(chan, Peer, 'q'))
+			can_kick = true;
+
+		/* Admin can't kick owner */
+		else if (Channel_UserHasMode(chan, Peer, 'a') &&
+		    !Channel_UserHasMode(chan, Target, 'q'))
+			can_kick = true;
+
+		/* Op can't kick owner | admin */
+		else if (Channel_UserHasMode(chan, Peer, 'o') &&
+		    !Channel_UserHasMode(chan, Target, 'q') &&
+		    !Channel_UserHasMode(chan, Target, 'a'))
+			can_kick = true;
+			
+		/* Half Op can't kick owner | admin | op */ 
+		else if (Channel_UserHasMode(chan, Peer, 'h') &&
+		    !Channel_UserHasMode(chan, Target, 'q') &&
+		    !Channel_UserHasMode(chan, Target, 'a') &&
+		    !Channel_UserHasMode(chan, Target, 'o'))
+			can_kick = true;
+
+		if(!can_kick) {
+			IRC_WriteErrClient(Origin, ERR_CHANOPPRIVTOOLOW_MSG,
+					   Client_ID(Origin), Name);
+			return;
+		}
+	}
+
 	/* Kick Client from channel */
 	Remove_Client( REMOVE_KICK, chan, Target, Origin, Reason, true);
 } /* Channel_Kick */
 
 
 GLOBAL void
-Channel_Quit( CLIENT *Client, char *Reason )
+Channel_Quit( CLIENT *Client, const char *Reason )
 {
 	CHANNEL *c, *next_c;
 
 	assert( Client != NULL );
 	assert( Reason != NULL );
 
+	if (Conf_MorePrivacy)
+		Reason = "";
+
 	IRC_WriteStrRelatedPrefix( Client, Client, false, "QUIT :%s", Reason );
 
 	c = My_Channels;
@@ -328,20 +404,31 @@ Channel_Quit( CLIENT *Client, char *Reason )
 } /* Channel_Quit */
 
 
+/**
+ * Get number of channels this server knows and that are "visible" to
+ * the given client. If no client is given, all channels will be counted.
+ *
+ * @param Client The client to check or NULL.
+ * @return Number of channels visible to the client.
+ */
 GLOBAL unsigned long
-Channel_Count( void )
+Channel_CountVisible (CLIENT *Client)
 {
 	CHANNEL *c;
 	unsigned long count = 0;
 
 	c = My_Channels;
-	while( c )
-	{
-		count++;
+	while(c) {
+		if (Client) {
+			if (!Channel_HasMode(c, 's')
+			    || Channel_IsMemberOf(c, Client))
+				count++;
+		} else
+			count++;
 		c = c->next;
 	}
 	return count;
-} /* Channel_Count */
+}
 
 
 GLOBAL unsigned long
@@ -399,6 +486,14 @@ Channel_Modes( CHANNEL *Chan )
 } /* Channel_Modes */
 
 
+GLOBAL bool
+Channel_HasMode( CHANNEL *Chan, char Mode )
+{
+	assert( Chan != NULL );
+	return strchr( Chan->modes, Mode ) != NULL;
+} /* Channel_HasMode */
+
+
 GLOBAL char *
 Channel_Key( CHANNEL *Chan )
 {
@@ -536,7 +631,7 @@ Channel_ModeAdd( CHANNEL *Chan, char Mode )
 	assert( Chan != NULL );
 
 	x[0] = Mode; x[1] = '\0';
-	if( ! strchr( Chan->modes, x[0] ))
+	if( ! Channel_HasMode( Chan, x[0] ))
 	{
 		/* Channel does not have this mode yet, set it */
 		strlcat( Chan->modes, x, sizeof( Chan->modes ));
@@ -645,6 +740,13 @@ Channel_UserModes( CHANNEL *Chan, CLIENT *Client )
 } /* Channel_UserModes */
 
 
+GLOBAL bool
+Channel_UserHasMode( CHANNEL *Chan, CLIENT *Client, char Mode )
+{
+	return strchr(Channel_UserModes(Chan, Client), Mode) != NULL;
+} /* Channel_UserHasMode */
+
+
 GLOBAL bool
 Channel_IsMemberOf( CHANNEL *Chan, CLIENT *Client )
 {
@@ -683,6 +785,14 @@ Channel_TopicWho(CHANNEL *Chan)
 	return Chan->topic_who;
 } /* Channel_TopicWho */
 
+
+GLOBAL unsigned int
+Channel_CreationTime(CHANNEL *Chan)
+{
+	assert(Chan != NULL);
+	return (unsigned int) Chan->creation_time;
+} /* Channel_CreationTime */
+
 #endif
 
 
@@ -715,7 +825,7 @@ Channel_SetTopic(CHANNEL *Chan, CLIENT *Client, const char *Topic)
 
 
 GLOBAL void
-Channel_SetModes( CHANNEL *Chan, char *Modes )
+Channel_SetModes( CHANNEL *Chan, const char *Modes )
 {
 	assert( Chan != NULL );
 	assert( Modes != NULL );
@@ -745,12 +855,19 @@ Channel_SetMaxUsers(CHANNEL *Chan, unsigned long Count)
 } /* Channel_SetMaxUsers */
 
 
+/**
+ * Check if a client is allowed to send to a specific channel.
+ *
+ * @param Chan The channel to check.
+ * @param From The client that wants to send.
+ * @return true if the client is allowed to send, false otherwise.
+ */
 static bool
 Can_Send_To_Channel(CHANNEL *Chan, CLIENT *From)
 {
-	bool is_member, has_voice, is_op;
+	bool is_member, has_voice, is_halfop, is_op, is_chanadmin, is_owner;
 
-	is_member = has_voice = is_op = false;
+	is_member = has_voice = is_halfop = is_op = is_chanadmin = is_owner = false;
 
 	/* The server itself always can send messages :-) */
 	if (Client_ThisServer() == From)
@@ -758,10 +875,16 @@ Can_Send_To_Channel(CHANNEL *Chan, CLIENT *From)
 
 	if (Channel_IsMemberOf(Chan, From)) {
 		is_member = true;
-		if (strchr(Channel_UserModes(Chan, From), 'v'))
+		if (Channel_UserHasMode(Chan, From, 'v'))
 			has_voice = true;
-		if (strchr(Channel_UserModes(Chan, From), 'o'))
+		if (Channel_UserHasMode(Chan, From, 'h'))
+			is_halfop = true;
+		if (Channel_UserHasMode(Chan, From, 'o'))
 			is_op = true;
+		if (Channel_UserHasMode(Chan, From, 'a'))
+			is_chanadmin = true;
+		if (Channel_UserHasMode(Chan, From, 'q'))
+			is_owner = true;
 	}
 
 	/*
@@ -770,15 +893,22 @@ Can_Send_To_Channel(CHANNEL *Chan, CLIENT *From)
 	 * If channel mode n set: non-members cannot send to channel.
 	 * If channel mode m set: need voice.
 	 */
-	if (strchr(Channel_Modes(Chan), 'n') && !is_member)
+	if (Channel_HasMode(Chan, 'n') && !is_member)
 		return false;
 
-	if (is_op || has_voice)
+	if (Channel_HasMode(Chan, 'M') && !Client_HasMode(From, 'R')
+	    && !Client_HasMode(From, 'o'))
+		return false;
+
+	if (has_voice || is_halfop || is_op || is_chanadmin || is_owner)
 		return true;
 
-	if (strchr(Channel_Modes(Chan), 'm'))
+	if (Channel_HasMode(Chan, 'm'))
 		return false;
 
+	if (Lists_Check(&Chan->list_excepts, From))
+		return true;
+
 	return !Lists_Check(&Chan->list_bans, From);
 }
 
@@ -790,15 +920,20 @@ Channel_Write(CHANNEL *Chan, CLIENT *From, CLIENT *Client, const char *Command,
 	if (!Can_Send_To_Channel(Chan, From)) {
 		if (! SendErrors)
 			return CONNECTED;	/* no error, see RFC 2812 */
-		return IRC_WriteStrClient(From, ERR_CANNOTSENDTOCHAN_MSG,
+		if (Channel_HasMode(Chan, 'M'))
+			return IRC_WriteErrClient(From, ERR_NEEDREGGEDNICK_MSG,
+						  Client_ID(From), Channel_Name(Chan));
+		else
+			return IRC_WriteErrClient(From, ERR_CANNOTSENDTOCHAN_MSG,
 					  Client_ID(From), Channel_Name(Chan));
 	}
 
 	if (Client_Conn(From) > NONE)
 		Conn_UpdateIdle(Client_Conn(From));
 
-	return IRC_WriteStrChannelPrefix(Client, Chan, From, true,
-			"%s %s :%s", Command, Channel_Name(Chan), Text);
+	IRC_WriteStrChannelPrefix(Client, Chan, From, true, "%s %s :%s",
+				  Command, Channel_Name(Chan), Text);
+	return CONNECTED;
 }
 
 
@@ -820,6 +955,9 @@ Channel_Create( const char *Name )
 	strlcpy( c->name, Name, sizeof( c->name ));
 	c->hash = Hash( c->name );
 	c->next = My_Channels;
+#ifndef STRICT_RFC
+	c->creation_time = time(NULL);
+#endif
 	My_Channels = c;
 	LogDebug("Created new channel structure for \"%s\".", Name);
 	return c;
@@ -867,7 +1005,7 @@ Add_Client( CHANNEL *Chan, CLIENT *Client )
 	cl2chan->next = My_Cl2Chan;
 	My_Cl2Chan = cl2chan;
 
-	Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
+	LogDebug("User \"%s\" joined channel \"%s\".", Client_Mask(Client), Chan->name);
 
 	return cl2chan;
 } /* Add_Client */
@@ -935,6 +1073,9 @@ Remove_Client( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, const ch
 				Client_Mask( Client ), c->name, Client_ID(Origin), Reason);
 			break;
 		default: /* PART */
+			if (Conf_MorePrivacy)
+				Reason = "";
+
 			if (InformServer)
 				IRC_WriteStrServersPrefix(Origin, Client, "PART %s :%s", c->name, Reason);
 
@@ -951,7 +1092,7 @@ Remove_Client( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, const ch
 	}
 
 	/* When channel is empty and is not pre-defined, delete */
-	if( ! strchr( Channel_Modes( Chan ), 'P' ))
+	if( ! Channel_HasMode( Chan, 'P' ))
 	{
 		if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
 	}
@@ -964,7 +1105,17 @@ GLOBAL bool
 Channel_AddBan(CHANNEL *c, const char *mask )
 {
 	struct list_head *h = Channel_GetListBans(c);
-	return Lists_Add(h, mask, false);
+	LogDebug("Adding \"%s\" to \"%s\" ban list", mask, Channel_Name(c));
+	return Lists_Add(h, mask, false, NULL);
+}
+
+
+GLOBAL bool
+Channel_AddExcept(CHANNEL *c, const char *mask )
+{
+	struct list_head *h = Channel_GetListExcepts(c);
+	LogDebug("Adding \"%s\" to \"%s\" exception list", mask, Channel_Name(c));
+	return Lists_Add(h, mask, false, NULL);
 }
 
 
@@ -972,29 +1123,31 @@ GLOBAL bool
 Channel_AddInvite(CHANNEL *c, const char *mask, bool onlyonce)
 {
 	struct list_head *h = Channel_GetListInvites(c);
-	return Lists_Add(h, mask, onlyonce);
+	LogDebug("Adding \"%s\" to \"%s\" invite list", mask, Channel_Name(c));
+	return Lists_Add(h, mask, onlyonce, NULL);
 }
 
 
 static bool
-ShowInvitesBans(struct list_head *head, CLIENT *Client, CHANNEL *Channel, bool invite)
+ShowChannelList(struct list_head *head, CLIENT *Client, CHANNEL *Channel,
+		char *msg, char *msg_end)
 {
 	struct list_elem *e;
-	char *msg = invite ? RPL_INVITELIST_MSG : RPL_BANLIST_MSG;
-	char *msg_end;
 
-	assert( Client != NULL );
-	assert( Channel != NULL );
+	assert (Client != NULL);
+	assert (Channel != NULL);
 
 	e = Lists_GetFirst(head);
 	while (e) {
-		if( ! IRC_WriteStrClient( Client, msg, Client_ID( Client ),
-				Channel_Name( Channel ), Lists_GetMask(e) )) return DISCONNECTED;
+		if (!IRC_WriteStrClient(Client, msg, Client_ID(Client),
+					Channel_Name(Channel),
+					Lists_GetMask(e)))
+			return DISCONNECTED;
 		e = Lists_GetNext(e);
 	}
 
-	msg_end = invite ? RPL_ENDOFINVITELIST_MSG : RPL_ENDOFBANLIST_MSG;
-	return IRC_WriteStrClient( Client, msg_end, Client_ID( Client ), Channel_Name( Channel ));
+	return IRC_WriteStrClient(Client, msg_end, Client_ID(Client),
+				  Channel_Name(Channel));
 }
 
 
@@ -1006,7 +1159,21 @@ Channel_ShowBans( CLIENT *Client, CHANNEL *Channel )
 	assert( Channel != NULL );
 
 	h = Channel_GetListBans(Channel);
-	return ShowInvitesBans(h, Client, Channel, false);
+	return ShowChannelList(h, Client, Channel, RPL_BANLIST_MSG,
+			       RPL_ENDOFBANLIST_MSG);
+}
+
+
+GLOBAL bool
+Channel_ShowExcepts( CLIENT *Client, CHANNEL *Channel )
+{
+	struct list_head *h;
+
+	assert( Channel != NULL );
+
+	h = Channel_GetListExcepts(Channel);
+	return ShowChannelList(h, Client, Channel, RPL_EXCEPTLIST_MSG,
+			       RPL_ENDOFEXCEPTLIST_MSG);
 }
 
 
@@ -1018,7 +1185,8 @@ Channel_ShowInvites( CLIENT *Client, CHANNEL *Channel )
 	assert( Channel != NULL );
 
 	h = Channel_GetListInvites(Channel);
-	return ShowInvitesBans(h, Client, Channel, true);
+	return ShowChannelList(h, Client, Channel, RPL_INVITELIST_MSG,
+			       RPL_ENDOFINVITELIST_MSG);
 }
 
 
@@ -1026,7 +1194,7 @@ Channel_ShowInvites( CLIENT *Client, CHANNEL *Channel )
  * Log a message to the local &SERVER channel, if it exists.
  */
 GLOBAL void
-Channel_LogServer(char *msg)
+Channel_LogServer(const char *msg)
 {
 	CHANNEL *sc;
 	CLIENT *c;
@@ -1042,6 +1210,56 @@ Channel_LogServer(char *msg)
 } /* Channel_LogServer */
 
 
+GLOBAL bool
+Channel_CheckKey(CHANNEL *Chan, CLIENT *Client, const char *Key)
+{
+	char *file_name, line[COMMAND_LEN], *nick, *pass;
+	FILE *fd;
+
+	assert(Chan != NULL);
+	assert(Client != NULL);
+	assert(Key != NULL);
+
+	if (!Channel_HasMode(Chan, 'k'))
+		return true;
+	if (*Key == '\0')
+		return false;
+	if (strcmp(Chan->key, Key) == 0)
+		return true;
+
+	file_name = array_start(&Chan->keyfile);
+	if (!file_name)
+		return false;
+	fd = fopen(file_name, "r");
+	if (!fd) {
+		Log(LOG_ERR, "Can't open channel key file \"%s\" for %s: %s",
+		    file_name, Chan->name, strerror(errno));
+		return false;
+	}
+
+	while (fgets(line, (int)sizeof(line), fd) != NULL) {
+		ngt_TrimStr(line);
+		if (! (nick = strchr(line, ':')))
+			continue;
+		*nick++ = '\0';
+		if (!Match(line, Client_User(Client)))
+			continue;
+		if (! (pass = strchr(nick, ':')))
+			continue;
+		*pass++ = '\0';
+		if (!Match(nick, Client_ID(Client)))
+			continue;
+		if (strcmp(Key, pass) != 0)
+			continue;
+
+		fclose(fd);
+		return true;
+	}
+	fclose(fd);
+	return false;
+} /* Channel_CheckKey */
+
+
 static CL2CHAN *
 Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
 {
@@ -1067,35 +1285,64 @@ Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
 } /* Get_Next_Cl2Chan */
 
 
-static bool
-Delete_Channel( CHANNEL *Chan )
+/**
+ * Remove a channel and free all of its data structures.
+ */
+static void
+Delete_Channel(CHANNEL *Chan)
 {
-	/* delete channel structure */
-
 	CHANNEL *chan, *last_chan;
 
 	last_chan = NULL;
 	chan = My_Channels;
-	while( chan )
-	{
-		if( chan == Chan ) break;
+	while (chan) {
+		if (chan == Chan)
+			break;
 		last_chan = chan;
 		chan = chan->next;
 	}
-	if( ! chan ) return false;
 
-	Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
-
-	array_free(&chan->topic);
-	Lists_Free(&chan->list_bans);
-	Lists_Free(&chan->list_invites);
+	assert(chan != NULL);
+	if (!chan)
+		return;
 
 	/* maintain channel list */
-	if( last_chan ) last_chan->next = chan->next;
-	else My_Channels = chan->next;
-	free( chan );
+	if (last_chan)
+		last_chan->next = chan->next;
+	else
+		My_Channels = chan->next;
 
-	return true;
+	LogDebug("Freed channel structure for \"%s\".", Chan->name);
+	Free_Channel(Chan);
 } /* Delete_Channel */
 
+
+static void
+Set_KeyFile(CHANNEL *Chan, const char *KeyFile)
+{
+	size_t len;
+
+	assert(Chan != NULL);
+	assert(KeyFile != NULL);
+
+	len = strlen(KeyFile);
+	if (len < array_bytes(&Chan->keyfile)) {
+		Log(LOG_INFO, "Channel key file of %s removed.", Chan->name);
+		array_free(&Chan->keyfile);
+	}
+
+	if (len < 1)
+		return;
+
+	if (!array_copyb(&Chan->keyfile, KeyFile, len+1))
+		Log(LOG_WARNING,
+		    "Could not set new channel key file \"%s\" for %s: %s",
+		    KeyFile, Chan->name, strerror(errno));
+	else
+		Log(LOG_INFO|LOG_snotice,
+		    "New local channel key file \"%s\" for %s activated.",
+		    KeyFile, Chan->name);
+} /* Set_KeyFile */
+
+
 /* -eof- */