/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2009 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.
- *
- * $Id: channel.c,v 1.3 2002/01/02 02:42:58 alex Exp $
- *
- * channel.c: Management der Channels
- *
- * $Log: channel.c,v $
- * Revision 1.3 2002/01/02 02:42:58 alex
- * - Copyright-Texte aktualisiert.
- *
- * Revision 1.2 2001/12/31 02:18:51 alex
- * - viele neue Befehle (WHOIS, ISON, OPER, DIE, RESTART),
- * - neuen Header "defines.h" mit (fast) allen Konstanten.
- * - Code Cleanups und viele "kleine" Aenderungen & Bugfixes.
- *
- * Revision 1.1 2001/12/14 08:13:43 alex
- * - neues Modul begonnen :-)
+ * 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
*/
-#include <portab.h>
-#include "global.h"
+#define __channel_c__
-#include <imp.h>
+
+#include "portab.h"
+
+#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 <exp.h>
+#include "exp.h"
#include "channel.h"
+#include "imp.h"
+#include "irc-write.h"
+#include "conf.h"
+#include "hash.h"
+#include "lists.h"
+#include "log.h"
+#include "messages.h"
+#include "match.h"
+
+#include "exp.h"
+
-LOCAL CHANNEL *My_Channels;
+#define REMOVE_PART 0
+#define REMOVE_QUIT 1
+#define REMOVE_KICK 2
-GLOBAL VOID Channel_Init( VOID )
+static CHANNEL *My_Channels;
+static CL2CHAN *My_Cl2Chan;
+
+
+static CL2CHAN *Get_Cl2Chan PARAMS(( CHANNEL *Chan, CLIENT *Client ));
+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 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 */
-GLOBAL VOID Channel_Exit( VOID )
+GLOBAL struct list_head *
+Channel_GetListBans(CHANNEL *c)
+{
+ assert(c != NULL);
+ return &c->list_bans;
+}
+
+
+GLOBAL struct list_head *
+Channel_GetListInvites(CHANNEL *c)
+{
+ assert(c != NULL);
+ return &c->list_invites;
+}
+
+
+GLOBAL void
+Channel_InitPredefined( void )
+{
+ /* Generate predefined persistent channels */
+
+ CHANNEL *new_chan;
+ const struct Conf_Channel *conf_chan;
+ const char *c;
+ size_t i, channel_count = array_length(&Conf_Channels, sizeof(*conf_chan));
+
+ conf_chan = array_start(&Conf_Channels);
+
+ 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);
+ 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);
+ 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\"",
+ conf_chan->name);
+ continue;
+ }
+ Log(LOG_INFO, "Created pre-defined channel \"%s\"",
+ conf_chan->name);
+
+ Channel_ModeAdd(new_chan, 'P');
+
+ if (conf_chan->topic[0])
+ Channel_SetTopic(new_chan, NULL, conf_chan->topic);
+
+ c = conf_chan->modes;
+ while (*c)
+ Channel_ModeAdd(new_chan, *c++);
+
+ Channel_SetKey(new_chan, conf_chan->key);
+ Channel_SetMaxUsers(new_chan, conf_chan->maxusers);
+ Set_KeyFile(new_chan, conf_chan->keyfile);
+ }
+ if (channel_count)
+ array_free(&Conf_Channels);
+} /* 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_invites);
+
+ free(chan);
+}
+
+
+GLOBAL void
+Channel_Exit( void )
{
+ CHANNEL *c, *c_next;
+ CL2CHAN *cl2chan, *cl2chan_next;
+
+ /* free struct Channel */
+ c = My_Channels;
+ while (c) {
+ c_next = c->next;
+ Free_Channel(c);
+ c = c_next;
+ }
+
+ /* Free Channel allocation table */
+ cl2chan = My_Cl2Chan;
+ while (cl2chan) {
+ cl2chan_next = cl2chan->next;
+ free(cl2chan);
+ cl2chan = cl2chan_next;
+ }
} /* Channel_Exit */
+/**
+ * Join Channel
+ * This function lets a client join a channel. First, the function
+ * checks that the specified channel name is valid and that the client
+ * isn't already a member. If the specified channel doesn't exist,
+ * a new channel is created. Client is added to channel by function
+ * Add_Client().
+ */
+GLOBAL bool
+Channel_Join( CLIENT *Client, const char *Name )
+{
+ CHANNEL *chan;
+
+ assert(Client != NULL);
+ assert(Name != NULL);
+
+ /* Check that the channel name is valid */
+ if (! Channel_IsValidName(Name)) {
+ IRC_WriteStrClient(Client, ERR_NOSUCHCHANNEL_MSG,
+ Client_ID(Client), Name);
+ return false;
+ }
+
+ chan = Channel_Search(Name);
+ if(chan) {
+ /* Check if the client is already in the channel */
+ if (Get_Cl2Chan(chan, Client))
+ return false;
+ } else {
+ /* If the specified channel does not exist, the channel
+ * is now created */
+ chan = Channel_Create(Name);
+ if (!chan)
+ return false;
+ }
+
+ /* Add user to Channel */
+ if (! Add_Client(chan, Client))
+ return false;
+
+ return true;
+} /* Channel_Join */
+
+
+/**
+ * Part client from channel.
+ * This function lets a client part from a channel. First, the function checks
+ * if the channel exists and the client is a member of it and sends out
+ * appropriate error messages if not. The real work is done by the function
+ * Remove_Client().
+ */
+GLOBAL bool
+Channel_Part(CLIENT * Client, CLIENT * Origin, const char *Name, const char *Reason)
+{
+ CHANNEL *chan;
+
+ assert(Client != NULL);
+ assert(Name != NULL);
+ assert(Reason != NULL);
+
+ /* Check that specified channel exists */
+ chan = Channel_Search(Name);
+ if (!chan) {
+ IRC_WriteStrClient(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,
+ Client_ID(Client), Name);
+ return false;
+ }
+
+ /* Part client from channel */
+ if (!Remove_Client(REMOVE_PART, chan, Client, Origin, Reason, true))
+ return false;
+ else
+ return true;
+} /* Channel_Part */
+
+
+/**
+ * Kick user from Channel
+ */
+GLOBAL void
+Channel_Kick(CLIENT *Peer, CLIENT *Target, CLIENT *Origin, const char *Name,
+ const char *Reason )
+{
+ CHANNEL *chan;
+
+ assert(Peer != NULL);
+ assert(Target != NULL);
+ assert(Origin != NULL);
+ assert(Name != NULL);
+ assert(Reason != NULL);
+
+ /* Check that channel exists */
+ chan = Channel_Search( Name );
+ if( ! chan )
+ {
+ IRC_WriteStrClient( Origin, ERR_NOSUCHCHANNEL_MSG, Client_ID( Origin ), Name );
+ return;
+ }
+
+ if (Client_Type(Peer) != CLIENT_SERVER &&
+ 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,
+ Client_ID(Origin), Name);
+ return;
+ }
+ }
+
+ /* Check that the client to be kicked is on the specified channel */
+ if (!Channel_IsMemberOf(chan, Target)) {
+ IRC_WriteStrClient(Origin, ERR_USERNOTINCHANNEL_MSG,
+ Client_ID(Origin), Client_ID(Target), Name );
+ return;
+ }
+
+ /* Kick Client from channel */
+ Remove_Client( REMOVE_KICK, chan, Target, Origin, Reason, true);
+} /* Channel_Kick */
+
+
+GLOBAL void
+Channel_Quit( CLIENT *Client, const char *Reason )
+{
+ CHANNEL *c, *next_c;
+
+ assert( Client != NULL );
+ assert( Reason != NULL );
+
+ IRC_WriteStrRelatedPrefix( Client, Client, false, "QUIT :%s", Reason );
+
+ c = My_Channels;
+ while( c )
+ {
+ next_c = c->next;
+ Remove_Client( REMOVE_QUIT, c, Client, Client, Reason, false );
+ c = next_c;
+ }
+} /* Channel_Quit */
+
+
+GLOBAL unsigned long
+Channel_Count( void )
+{
+ CHANNEL *c;
+ unsigned long count = 0;
+
+ c = My_Channels;
+ while( c )
+ {
+ count++;
+ c = c->next;
+ }
+ return count;
+} /* Channel_Count */
+
+
+GLOBAL unsigned long
+Channel_MemberCount( CHANNEL *Chan )
+{
+ CL2CHAN *cl2chan;
+ unsigned long count = 0;
+
+ assert( Chan != NULL );
+
+ cl2chan = My_Cl2Chan;
+ while( cl2chan )
+ {
+ if( cl2chan->channel == Chan ) count++;
+ cl2chan = cl2chan->next;
+ }
+ return count;
+} /* Channel_MemberCount */
+
+
+GLOBAL int
+Channel_CountForUser( CLIENT *Client )
+{
+ /* Count number of channels a user is member of. */
+
+ CL2CHAN *cl2chan;
+ int count = 0;
+
+ assert( Client != NULL );
+
+ cl2chan = My_Cl2Chan;
+ while( cl2chan )
+ {
+ if( cl2chan->client == Client ) count++;
+ cl2chan = cl2chan->next;
+ }
+
+ return count;
+} /* Channel_CountForUser */
+
+
+GLOBAL const char *
+Channel_Name( const CHANNEL *Chan )
+{
+ assert( Chan != NULL );
+ return Chan->name;
+} /* Channel_Name */
+
+
+GLOBAL char *
+Channel_Modes( CHANNEL *Chan )
+{
+ assert( Chan != NULL );
+ return Chan->modes;
+} /* Channel_Modes */
+
+
+GLOBAL char *
+Channel_Key( CHANNEL *Chan )
+{
+ assert( Chan != NULL );
+ return Chan->key;
+} /* Channel_Key */
+
+
+GLOBAL unsigned long
+Channel_MaxUsers( CHANNEL *Chan )
+{
+ assert( Chan != NULL );
+ return Chan->maxusers;
+} /* Channel_MaxUsers */
+
+
+GLOBAL CHANNEL *
+Channel_First( void )
+{
+ return My_Channels;
+} /* Channel_First */
+
+
+GLOBAL CHANNEL *
+Channel_Next( CHANNEL *Chan )
+{
+ assert( Chan != NULL );
+ return Chan->next;
+} /* Channel_Next */
+
+
+GLOBAL CHANNEL *
+Channel_Search( const char *Name )
+{
+ /* Search channel structure */
+
+ CHANNEL *c;
+ UINT32 search_hash;
+
+ assert( Name != NULL );
+
+ search_hash = Hash( Name );
+ c = My_Channels;
+ while( c )
+ {
+ if( search_hash == c->hash )
+ {
+ /* hash hit */
+ if( strcasecmp( Name, c->name ) == 0 ) return c;
+ }
+ c = c->next;
+ }
+ return NULL;
+} /* Channel_Search */
+
+
+GLOBAL CL2CHAN *
+Channel_FirstMember( CHANNEL *Chan )
+{
+ assert( Chan != NULL );
+ return Get_First_Cl2Chan( NULL, Chan );
+} /* Channel_FirstMember */
+
+
+GLOBAL CL2CHAN *
+Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
+{
+ assert( Chan != NULL );
+ assert( Cl2Chan != NULL );
+ return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
+} /* Channel_NextMember */
+
+
+GLOBAL CL2CHAN *
+Channel_FirstChannelOf( CLIENT *Client )
+{
+ assert( Client != NULL );
+ return Get_First_Cl2Chan( Client, NULL );
+} /* Channel_FirstChannelOf */
+
+
+GLOBAL CL2CHAN *
+Channel_NextChannelOf( CLIENT *Client, CL2CHAN *Cl2Chan )
+{
+ assert( Client != NULL );
+ assert( Cl2Chan != NULL );
+ return Get_Next_Cl2Chan( Cl2Chan->next, Client, NULL );
+} /* Channel_NextChannelOf */
+
+
+GLOBAL CLIENT *
+Channel_GetClient( CL2CHAN *Cl2Chan )
+{
+ assert( Cl2Chan != NULL );
+ return Cl2Chan->client;
+} /* Channel_GetClient */
+
+
+GLOBAL CHANNEL *
+Channel_GetChannel( CL2CHAN *Cl2Chan )
+{
+ assert( Cl2Chan != NULL );
+ return Cl2Chan->channel;
+} /* Channel_GetChannel */
+
+
+GLOBAL bool
+Channel_IsValidName( const char *Name )
+{
+ assert( Name != NULL );
+
+#ifdef STRICT_RFC
+ if (strlen(Name) <= 1)
+ return false;
+#endif
+ if (strchr("#&+", Name[0]) == NULL)
+ return false;
+ if (strlen(Name) >= CHANNEL_NAME_LEN)
+ return false;
+
+ return Name[strcspn(Name, " ,:\007")] == 0;
+} /* Channel_IsValidName */
+
+
+GLOBAL bool
+Channel_ModeAdd( CHANNEL *Chan, char Mode )
+{
+ /* set Mode.
+ * If the channel already had this mode, return false.
+ * If the channel mode was newly set return true.
+ */
+
+ char x[2];
+
+ assert( Chan != NULL );
+
+ x[0] = Mode; x[1] = '\0';
+ if( ! strchr( Chan->modes, x[0] ))
+ {
+ /* Channel does not have this mode yet, set it */
+ strlcat( Chan->modes, x, sizeof( Chan->modes ));
+ return true;
+ }
+ else return false;
+} /* Channel_ModeAdd */
+
+
+GLOBAL bool
+Channel_ModeDel( CHANNEL *Chan, char Mode )
+{
+ /* Delete mode.
+ * if the mode was removed return true.
+ * if the channel did not have the mode, return false.
+ */
+ char *p;
+
+ assert( Chan != NULL );
+
+ p = strchr( Chan->modes, Mode );
+ if( ! p ) return false;
+
+ /* Channel has mode -> delete */
+ while( *p )
+ {
+ *p = *(p + 1);
+ p++;
+ }
+ return true;
+} /* Channel_ModeDel */
+
+
+GLOBAL bool
+Channel_UserModeAdd( CHANNEL *Chan, CLIENT *Client, char Mode )
+{
+ /* Set Channel-User-Mode.
+ * if mode was newly set, return true.
+ * if the User already had this channel-mode, return false.
+ */
+
+ CL2CHAN *cl2chan;
+ char x[2];
+
+ assert( Chan != NULL );
+ assert( Client != NULL );
+
+ cl2chan = Get_Cl2Chan( Chan, Client );
+ assert( cl2chan != NULL );
+
+ x[0] = Mode; x[1] = '\0';
+ if( ! strchr( cl2chan->modes, x[0] ))
+ {
+ /* mode not set, -> set it */
+ strlcat( cl2chan->modes, x, sizeof( cl2chan->modes ));
+ return true;
+ }
+ else return false;
+} /* Channel_UserModeAdd */
+
+
+GLOBAL bool
+Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, char Mode )
+{
+ /* Delete Channel-User-Mode.
+ * If Mode was removed, return true.
+ * If User did not have the Channel-Mode, return false.
+ */
+
+ CL2CHAN *cl2chan;
+ char *p;
+
+ assert( Chan != NULL );
+ assert( Client != NULL );
+
+ cl2chan = Get_Cl2Chan( Chan, Client );
+ assert( cl2chan != NULL );
+
+ p = strchr( cl2chan->modes, Mode );
+ if( ! p ) return false;
+
+ /* Client has Mode -> delete */
+ while( *p )
+ {
+ *p = *(p + 1);
+ p++;
+ }
+ return true;
+} /* Channel_UserModeDel */
+
+
+GLOBAL char *
+Channel_UserModes( CHANNEL *Chan, CLIENT *Client )
+{
+ /* return Users' Channel-Modes */
+
+ CL2CHAN *cl2chan;
+
+ assert( Chan != NULL );
+ assert( Client != NULL );
+
+ cl2chan = Get_Cl2Chan( Chan, Client );
+ assert( cl2chan != NULL );
+
+ return cl2chan->modes;
+} /* Channel_UserModes */
+
+
+GLOBAL bool
+Channel_IsMemberOf( CHANNEL *Chan, CLIENT *Client )
+{
+ /* Test if Client is on Channel Chan */
+
+ assert( Chan != NULL );
+ assert( Client != NULL );
+ return Get_Cl2Chan(Chan, Client) != NULL;
+} /* Channel_IsMemberOf */
+
+
+GLOBAL char *
+Channel_Topic( CHANNEL *Chan )
+{
+ char *ret;
+ assert( Chan != NULL );
+ ret = array_start(&Chan->topic);
+ return ret ? ret : "";
+} /* Channel_Topic */
+
+
+#ifndef STRICT_RFC
+
+GLOBAL unsigned int
+Channel_TopicTime(CHANNEL *Chan)
+{
+ assert(Chan != NULL);
+ return (unsigned int) Chan->topic_time;
+} /* Channel_TopicTime */
+
+
+GLOBAL char *
+Channel_TopicWho(CHANNEL *Chan)
+{
+ assert(Chan != NULL);
+ return Chan->topic_who;
+} /* Channel_TopicWho */
+
+#endif
+
+
+GLOBAL void
+Channel_SetTopic(CHANNEL *Chan, CLIENT *Client, const char *Topic)
+{
+ size_t len;
+ assert( Chan != NULL );
+ assert( Topic != NULL );
+
+ len = strlen(Topic);
+ if (len < array_bytes(&Chan->topic))
+ array_free(&Chan->topic);
+
+ if (len >= COMMAND_LEN || !array_copyb(&Chan->topic, Topic, len+1))
+ Log(LOG_WARNING, "could not set new Topic \"%s\" on %s: %s",
+ Topic, Chan->name, strerror(errno));
+#ifndef STRICT_RFC
+ Chan->topic_time = time(NULL);
+ if (Client != NULL && Client_Type(Client) != CLIENT_SERVER)
+ strlcpy(Chan->topic_who, Client_ID(Client),
+ sizeof Chan->topic_who);
+ else
+ strlcpy(Chan->topic_who, DEFAULT_TOPIC_ID,
+ sizeof Chan->topic_who);
+#else
+ (void) Client;
+#endif
+} /* Channel_SetTopic */
+
+
+GLOBAL void
+Channel_SetModes( CHANNEL *Chan, const char *Modes )
+{
+ assert( Chan != NULL );
+ assert( Modes != NULL );
+
+ strlcpy( Chan->modes, Modes, sizeof( Chan->modes ));
+} /* Channel_SetModes */
+
+
+GLOBAL void
+Channel_SetKey( CHANNEL *Chan, const char *Key )
+{
+ assert( Chan != NULL );
+ assert( Key != NULL );
+
+ strlcpy( Chan->key, Key, sizeof( Chan->key ));
+ LogDebug("Channel %s: Key is now \"%s\".", Chan->name, Chan->key );
+} /* Channel_SetKey */
+
+
+GLOBAL void
+Channel_SetMaxUsers(CHANNEL *Chan, unsigned long Count)
+{
+ assert( Chan != NULL );
+
+ Chan->maxusers = Count;
+ LogDebug("Channel %s: Member limit is now %lu.", Chan->name, Chan->maxusers );
+} /* Channel_SetMaxUsers */
+
+
+static bool
+Can_Send_To_Channel(CHANNEL *Chan, CLIENT *From)
+{
+ bool is_member, has_voice, is_op;
+
+ is_member = has_voice = is_op = false;
+
+ /* The server itself always can send messages :-) */
+ if (Client_ThisServer() == From)
+ return true;
+
+ if (Channel_IsMemberOf(Chan, From)) {
+ is_member = true;
+ if (strchr(Channel_UserModes(Chan, From), 'v'))
+ has_voice = true;
+ if (strchr(Channel_UserModes(Chan, From), 'o'))
+ is_op = true;
+ }
+
+ /*
+ * Is the client allowed to write to channel?
+ *
+ * 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)
+ return false;
+
+ if (is_op || has_voice)
+ return true;
+
+ if (strchr(Channel_Modes(Chan), 'm'))
+ return false;
+
+ return !Lists_Check(&Chan->list_bans, From);
+}
+
+
+GLOBAL bool
+Channel_Write(CHANNEL *Chan, CLIENT *From, CLIENT *Client, const char *Command,
+ bool SendErrors, const char *Text)
+{
+ if (!Can_Send_To_Channel(Chan, From)) {
+ if (! SendErrors)
+ return CONNECTED; /* no error, see RFC 2812 */
+ return IRC_WriteStrClient(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);
+}
+
+
+GLOBAL CHANNEL *
+Channel_Create( const char *Name )
+{
+ /* Create new CHANNEL structure and add it to linked list */
+ CHANNEL *c;
+
+ assert( Name != NULL );
+
+ c = (CHANNEL *)malloc( sizeof( CHANNEL ));
+ if( ! c )
+ {
+ Log( LOG_EMERG, "Can't allocate memory! [New_Chan]" );
+ return NULL;
+ }
+ memset( c, 0, sizeof( CHANNEL ));
+ strlcpy( c->name, Name, sizeof( c->name ));
+ c->hash = Hash( c->name );
+ c->next = My_Channels;
+ My_Channels = c;
+ LogDebug("Created new channel structure for \"%s\".", Name);
+ return c;
+} /* Channel_Create */
+
+
+static CL2CHAN *
+Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
+{
+ CL2CHAN *cl2chan;
+
+ assert( Chan != NULL );
+ assert( Client != NULL );
+
+ cl2chan = My_Cl2Chan;
+ while( cl2chan )
+ {
+ if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
+ cl2chan = cl2chan->next;
+ }
+ return NULL;
+} /* Get_Cl2Chan */
+
+
+static CL2CHAN *
+Add_Client( CHANNEL *Chan, CLIENT *Client )
+{
+ CL2CHAN *cl2chan;
+
+ assert( Chan != NULL );
+ assert( Client != NULL );
+
+ /* Create new CL2CHAN structure */
+ cl2chan = (CL2CHAN *)malloc( sizeof( CL2CHAN ));
+ if( ! cl2chan )
+ {
+ Log( LOG_EMERG, "Can't allocate memory! [Add_Client]" );
+ return NULL;
+ }
+ cl2chan->channel = Chan;
+ cl2chan->client = Client;
+ strcpy( cl2chan->modes, "" );
+
+ /* concatenate */
+ cl2chan->next = My_Cl2Chan;
+ My_Cl2Chan = cl2chan;
+
+ LogDebug("User \"%s\" joined channel \"%s\".", Client_Mask(Client), Chan->name);
+
+ return cl2chan;
+} /* Add_Client */
+
+
+static bool
+Remove_Client( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, const char *Reason, bool InformServer )
+{
+ CL2CHAN *cl2chan, *last_cl2chan;
+ CHANNEL *c;
+
+ assert( Chan != NULL );
+ assert( Client != NULL );
+ assert( Origin != NULL );
+ assert( Reason != NULL );
+
+ /* Do not inform other servers if the channel is local to this server,
+ * regardless of what the caller requested! */
+ if(InformServer)
+ InformServer = !Channel_IsLocal(Chan);
+
+ last_cl2chan = NULL;
+ cl2chan = My_Cl2Chan;
+ while( cl2chan )
+ {
+ if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
+ last_cl2chan = cl2chan;
+ cl2chan = cl2chan->next;
+ }
+ if( ! cl2chan ) return false;
+
+ c = cl2chan->channel;
+ assert( c != NULL );
+
+ /* maintain cl2chan list */
+ if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
+ else My_Cl2Chan = cl2chan->next;
+ free( cl2chan );
+
+ switch( Type )
+ {
+ case REMOVE_QUIT:
+ /* QUIT: other servers have already been notified,
+ * see Client_Destroy(); so only inform other clients
+ * in same channel. */
+ assert( InformServer == false );
+ LogDebug("User \"%s\" left channel \"%s\" (%s).",
+ Client_Mask( Client ), c->name, Reason );
+ break;
+ case REMOVE_KICK:
+ /* User was KICKed: inform other servers (public
+ * channels) and all users in the channel */
+ if( InformServer )
+ IRC_WriteStrServersPrefix( Client_NextHop( Origin ),
+ Origin, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason);
+ IRC_WriteStrChannelPrefix(Client, c, Origin, false, "KICK %s %s :%s",
+ c->name, Client_ID( Client ), Reason );
+ if ((Client_Conn(Client) > NONE) &&
+ (Client_Type(Client) == CLIENT_USER))
+ {
+ IRC_WriteStrClientPrefix(Client, Origin, "KICK %s %s :%s",
+ c->name, Client_ID( Client ), Reason);
+ }
+ LogDebug("User \"%s\" has been kicked off \"%s\" by \"%s\": %s.",
+ Client_Mask( Client ), c->name, Client_ID(Origin), Reason);
+ break;
+ default: /* PART */
+ if (InformServer)
+ IRC_WriteStrServersPrefix(Origin, Client, "PART %s :%s", c->name, Reason);
+
+ IRC_WriteStrChannelPrefix(Origin, c, Client, false, "PART %s :%s",
+ c->name, Reason);
+
+ if ((Client_Conn(Origin) > NONE) &&
+ (Client_Type(Origin) == CLIENT_USER))
+ {
+ IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason);
+ LogDebug("User \"%s\" left channel \"%s\" (%s).",
+ Client_Mask(Client), c->name, Reason);
+ }
+ }
+
+ /* When channel is empty and is not pre-defined, delete */
+ if( ! strchr( Channel_Modes( Chan ), 'P' ))
+ {
+ if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
+ }
+
+ return true;
+} /* Remove_Client */
+
+
+GLOBAL bool
+Channel_AddBan(CHANNEL *c, const char *mask )
+{
+ struct list_head *h = Channel_GetListBans(c);
+ return Lists_Add(h, mask, false);
+}
+
+
+GLOBAL bool
+Channel_AddInvite(CHANNEL *c, const char *mask, bool onlyonce)
+{
+ struct list_head *h = Channel_GetListInvites(c);
+ return Lists_Add(h, mask, onlyonce);
+}
+
+
+static bool
+ShowInvitesBans(struct list_head *head, CLIENT *Client, CHANNEL *Channel, bool invite)
+{
+ struct list_elem *e;
+ char *msg = invite ? RPL_INVITELIST_MSG : RPL_BANLIST_MSG;
+ char *msg_end;
+
+ 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;
+ 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 ));
+}
+
+
+GLOBAL bool
+Channel_ShowBans( CLIENT *Client, CHANNEL *Channel )
+{
+ struct list_head *h;
+
+ assert( Channel != NULL );
+
+ h = Channel_GetListBans(Channel);
+ return ShowInvitesBans(h, Client, Channel, false);
+}
+
+
+GLOBAL bool
+Channel_ShowInvites( CLIENT *Client, CHANNEL *Channel )
+{
+ struct list_head *h;
+
+ assert( Channel != NULL );
+
+ h = Channel_GetListInvites(Channel);
+ return ShowInvitesBans(h, Client, Channel, true);
+}
+
+
+/**
+ * Log a message to the local &SERVER channel, if it exists.
+ */
+GLOBAL void
+Channel_LogServer(const char *msg)
+{
+ CHANNEL *sc;
+ CLIENT *c;
+
+ assert(msg != NULL);
+
+ sc = Channel_Search("&SERVER");
+ if (!sc)
+ return;
+
+ c = Client_ThisServer();
+ Channel_Write(sc, c, c, "PRIVMSG", false, 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 (!strchr(Chan->modes, 'k'))
+ return true;
+ if (strcmp(Chan->key, Key) == 0)
+ return true;
+ if (*Key == '\0')
+ return false;
+
+ 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 )
+{
+ return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
+} /* Get_First_Cl2Chan */
+
+
+static CL2CHAN *
+Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
+{
+ CL2CHAN *cl2chan;
+
+ assert( Client != NULL || Channel != NULL );
+
+ cl2chan = Start;
+ while( cl2chan )
+ {
+ if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
+ if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
+ cl2chan = cl2chan->next;
+ }
+ return NULL;
+} /* Get_Next_Cl2Chan */
+
+
+/**
+ * Remove a channel and free all of its data structures.
+ */
+static void
+Delete_Channel(CHANNEL *Chan)
+{
+ CHANNEL *chan, *last_chan;
+
+ last_chan = NULL;
+ chan = My_Channels;
+ while (chan) {
+ if (chan == Chan)
+ break;
+ last_chan = chan;
+ chan = chan->next;
+ }
+
+ assert(chan != NULL);
+ if (!chan)
+ return;
+
+ /* maintain channel list */
+ if (last_chan)
+ last_chan->next = chan->next;
+ else
+ My_Channels = chan->next;
+
+ 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- */
projects / ngircd-alex.git / blobdiff