* ngIRCd -- The Next Generation IRC Daemon
* Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
*
- * Dieses Programm ist freie Software. Sie koennen es unter den Bedingungen
- * der GNU General Public License (GPL), wie von der Free Software Foundation
- * herausgegeben, weitergeben und/oder modifizieren, entweder unter Version 2
- * der Lizenz oder (wenn Sie es wuenschen) jeder spaeteren Version.
- * Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
- * der an ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * Please read the file COPYING, README and AUTHORS for more information.
*
- * $Id: irc-channel.c,v 1.8 2002/06/02 14:51:14 alex Exp $
- *
- * irc-channel.c: IRC-Channel-Befehle
+ * IRC channel commands
*/
#include "portab.h"
+static char UNUSED id[] = "$Id: irc-channel.c,v 1.31 2005/09/02 12:50:25 alex Exp $";
+
#include "imp.h"
#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
#include <string.h>
#include "defines.h"
#include "channel.h"
#include "lists.h"
#include "log.h"
+#include "match.h"
#include "messages.h"
#include "parse.h"
-#include "irc.h"
+#include "irc-info.h"
#include "irc-write.h"
+#include "resolve.h"
+#include "conf.h"
#include "exp.h"
#include "irc-channel.h"
-GLOBAL BOOLEAN
+GLOBAL bool
IRC_JOIN( CLIENT *Client, REQUEST *Req )
{
- CHAR *channame, *flags, *topic, modes[8];
- BOOLEAN is_new_chan;
+ char *channame, *key, *flags, *topic, modes[8];
+ bool is_new_chan, is_invited, is_banned;
CLIENT *target;
CHANNEL *chan;
-
+
assert( Client != NULL );
assert( Req != NULL );
- if(( Client_Type( Client ) != CLIENT_USER ) && ( Client_Type( Client ) != CLIENT_SERVER )) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
-
- /* Falsche Anzahl Parameter? */
- if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+ /* Bad number of arguments? */
+ if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
- /* Wer ist der Absender? */
+ /* Who is the sender? */
if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
else target = Client;
if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
+ /* Are channel keys given? */
+ if( Req->argc > 1 ) key = Req->argv[1];
+ else key = NULL;
+
/* Channel-Namen durchgehen */
chan = NULL;
channame = strtok( Req->argv[0], "," );
while( channame )
{
- chan = flags = NULL;
+ chan = NULL; flags = NULL;
/* wird der Channel neu angelegt? */
- if( Channel_Search( channame )) is_new_chan = FALSE;
- else is_new_chan = TRUE;
+ if( Channel_Search( channame )) is_new_chan = false;
+ else is_new_chan = true;
/* Hat ein Server Channel-User-Modes uebergeben? */
if( Client_Type( Client ) == CLIENT_SERVER )
{
/* Channel-Flags extrahieren */
flags = strchr( channame, 0x7 );
- if( flags ) *flags++ = '\0';
+ if( flags )
+ {
+ *flags = '\0';
+ flags++;
+ }
}
- /* Lokaler Client? */
+ /* Local client? */
if( Client_Type( Client ) == CLIENT_USER )
{
+ /* Test if the user has reached his maximum channel count */
+ if( Client_Type( Client ) == CLIENT_USER )
+ {
+ if(( Conf_MaxJoins > 0 ) && ( Channel_CountForUser( Client ) >= Conf_MaxJoins ))
+ {
+ IRC_WriteStrClient( Client, ERR_TOOMANYCHANNELS_MSG, Client_ID( Client ), channame );
+ return CONNECTED;
+ }
+ }
+
/* Existiert der Channel bereits, oder wird er im Moment neu erzeugt? */
if( is_new_chan )
{
chan = Channel_Search( channame );
assert( chan != NULL );
+ is_banned = Lists_CheckBanned( target, chan );
+ is_invited = Lists_CheckInvited( target, chan );
+
/* Testen, ob Client gebanned ist */
- if( Lists_CheckBanned( target, chan ))
+ if(( is_banned == true) && ( is_invited == false ))
{
- /* Client ist gebanned: */
+ /* Client ist gebanned (und nicht invited): */
IRC_WriteStrClient( Client, ERR_BANNEDFROMCHAN_MSG, Client_ID( Client ), channame );
- /* naechsten Namen ermitteln */
+ /* Try next name, if any */
channame = strtok( NULL, "," );
continue;
}
/* Ist der Channel "invite-only"? */
- if( strchr( Channel_Modes( chan ), 'i' ))
+ if(( strchr( Channel_Modes( chan ), 'i' )) && ( is_invited == false ))
{
- /* Wurde der Client invited? */
- if( ! Lists_CheckInvited( target, chan ))
- {
- /* Client wurde nicht invited: */
- IRC_WriteStrClient( Client, ERR_INVITEONLYCHAN_MSG, Client_ID( Client ), channame );
-
- /* naechsten Namen ermitteln */
- channame = strtok( NULL, "," );
- continue;
- }
+ /* Channel ist "invite-only" und Client wurde nicht invited: */
+ IRC_WriteStrClient( Client, ERR_INVITEONLYCHAN_MSG, Client_ID( Client ), channame );
+
+ /* Try next name, if any */
+ channame = strtok( NULL, "," );
+ continue;
+ }
+
+ /* Is the channel protected by a key? */
+ if(( strchr( Channel_Modes( chan ), 'k' )) && ( strcmp( Channel_Key( chan ), key ? key : "" ) != 0 ))
+ {
+ /* Bad channel key! */
+ IRC_WriteStrClient( Client, ERR_BADCHANNELKEY_MSG, Client_ID( Client ), channame );
+
+ /* Try next name, if any */
+ channame = strtok( NULL, "," );
+ continue;
+ }
+
+ /* Are there already too many members? */
+ if(( strchr( Channel_Modes( chan ), 'l' )) && ( Channel_MaxUsers( chan ) <= Channel_MemberCount( chan )))
+ {
+ /* Bad channel key! */
+ IRC_WriteStrClient( Client, ERR_CHANNELISFULL_MSG, Client_ID( Client ), channame );
+
+ /* Try next name, if any */
+ channame = strtok( NULL, "," );
+ continue;
}
}
}
+ else
+ {
+ /* Remote server: we don't need to know whether the
+ * client is invited or not, but we have to make sure
+ * that the "one shot" entries (generated by INVITE
+ * commands) in this list become deleted when a user
+ * joins a channel this way. */
+ chan = Channel_Search( channame );
+ if( chan != NULL ) (void)Lists_CheckInvited( target, chan );
+ }
/* Channel joinen (und ggf. anlegen) */
if( ! Channel_Join( target, channame ))
if(( strchr( Channel_Modes( chan ), 'P' )) && ( strchr( Client_Modes( target ), 'o' ))) Channel_UserModeAdd( chan, target, 'o' );
/* Muessen Modes an andere Server gemeldet werden? */
- strcpy( &modes[1], Channel_UserModes( chan, target ));
+ strlcpy( &modes[1], Channel_UserModes( chan, target ), sizeof( modes ) - 1 );
if( modes[1] ) modes[0] = 0x7;
else modes[0] = '\0';
IRC_WriteStrServersPrefix( Client, target, "JOIN :%s%s", channame, modes );
/* im Channel bekannt machen */
- IRC_WriteStrChannelPrefix( Client, chan, target, FALSE, "JOIN :%s", channame );
+ IRC_WriteStrChannelPrefix( Client, chan, target, false, "JOIN :%s", channame );
if( modes[1] )
{
/* Modes im Channel bekannt machen */
- IRC_WriteStrChannelPrefix( Client, chan, target, FALSE, "MODE %s %s :%s", channame, modes, Client_ID( target ));
+ IRC_WriteStrChannelPrefix( Client, chan, target, false, "MODE %s +%s %s", channame, &modes[1], Client_ID( target ));
}
if( Client_Type( Client ) == CLIENT_USER )
/* an Client bestaetigen */
IRC_WriteStrClientPrefix( Client, target, "JOIN :%s", channame );
- /* Topic an Client schicken */
- topic = Channel_Topic( chan );
- if( *topic ) IRC_WriteStrClient( Client, RPL_TOPIC_MSG, Client_ID( Client ), channame, topic );
+ /* Send topic to client, if any */
+ topic = Channel_Topic(chan);
+ if (*topic) {
+ IRC_WriteStrClient(Client, RPL_TOPIC_MSG,
+ Client_ID(Client), channame, topic);
+#ifndef STRICT_RFC
+ IRC_WriteStrClient(Client, RPL_TOPICSETBY_MSG,
+ Client_ID(Client), channame,
+ Channel_TopicWho(chan),
+ Channel_TopicTime(chan));
+#endif
+ }
/* Mitglieder an Client Melden */
IRC_Send_NAMES( Client, chan );
} /* IRC_JOIN */
-GLOBAL BOOLEAN
+GLOBAL bool
IRC_PART( CLIENT *Client, REQUEST *Req )
{
CLIENT *target;
- CHAR *chan;
+ char *chan;
assert( Client != NULL );
assert( Req != NULL );
- if(( Client_Type( Client ) != CLIENT_USER ) && ( Client_Type( Client ) != CLIENT_SERVER )) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
-
/* Falsche Anzahl Parameter? */
if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
} /* IRC_PART */
-GLOBAL BOOLEAN
+GLOBAL bool
IRC_TOPIC( CLIENT *Client, REQUEST *Req )
{
CHANNEL *chan;
CLIENT *from;
- CHAR *topic;
+ char *topic;
+ bool r;
assert( Client != NULL );
assert( Req != NULL );
- if(( Client_Type( Client ) != CLIENT_USER ) && ( Client_Type( Client ) != CLIENT_SERVER )) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
-
/* Falsche Anzahl Parameter? */
if(( Req->argc < 1 ) || ( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
if( Req->argc == 1 )
{
- /* Topic erfragen */
- topic = Channel_Topic( chan );
- if( *topic ) return IRC_WriteStrClient( from, RPL_TOPIC_MSG, Client_ID( from ), Channel_Name( chan ), topic );
- else return IRC_WriteStrClient( from, RPL_NOTOPIC_MSG, Client_ID( from ), Channel_Name( chan ));
+ /* Request actual topic */
+ topic = Channel_Topic(chan);
+ if (*topic) {
+ r = IRC_WriteStrClient(from, RPL_TOPIC_MSG,
+ Client_ID(Client), Channel_Name(chan), topic);
+#ifndef STRICT_RFC
+ r = IRC_WriteStrClient(from, RPL_TOPICSETBY_MSG,
+ Client_ID(Client), Channel_Name(chan),
+ Channel_TopicWho(chan),
+ Channel_TopicTime(chan));
+#endif
+ return r;
+ }
+ else
+ return IRC_WriteStrClient(from, RPL_NOTOPIC_MSG,
+ Client_ID(from), Channel_Name(chan));
}
if( strchr( Channel_Modes( chan ), 't' ))
if( ! strchr( Channel_UserModes( chan, from ), 'o' )) return IRC_WriteStrClient( from, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( from ), Channel_Name( chan ));
}
- /* Topic setzen */
- Channel_SetTopic( chan, Req->argv[1] );
- Log( LOG_DEBUG, "User \"%s\" set topic on \"%s\": %s", Client_Mask( from ), Channel_Name( chan ), Req->argv[1][0] ? Req->argv[1] : "<none>" );
+ /* Set new topic */
+ Channel_SetTopic(chan, from, Req->argv[1]);
+ Log(LOG_DEBUG, "User \"%s\" set topic on \"%s\": %s",
+ Client_Mask(from), Channel_Name(chan),
+ Req->argv[1][0] ? Req->argv[1] : "<none>");
/* im Channel bekannt machen und an Server weiterleiten */
IRC_WriteStrServersPrefix( Client, from, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
- IRC_WriteStrChannelPrefix( Client, chan, from, FALSE, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
+ IRC_WriteStrChannelPrefix( Client, chan, from, false, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
if( Client_Type( Client ) == CLIENT_USER ) return IRC_WriteStrClientPrefix( Client, Client, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
else return CONNECTED;
} /* IRC_TOPIC */
-GLOBAL BOOLEAN
+/**
+ * Handler for the IRC "LIST" command.
+ * This implementation handles the local case as well as the forwarding of the
+ * LIST command to other servers in the IRC network.
+ */
+GLOBAL bool
IRC_LIST( CLIENT *Client, REQUEST *Req )
{
- CHAR *pattern;
+ char *pattern;
CHANNEL *chan;
+ CLIENT *from, *target;
assert( Client != NULL );
assert( Req != NULL );
- if( Client_Type( Client ) != CLIENT_USER ) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
+ /* Bad number of prameters? */
+ if( Req->argc > 2 )
+ return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID( Client ), Req->command );
- /* Falsche Anzahl Parameter? */
- if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+ if( Req->argc > 0 )
+ pattern = strtok( Req->argv[0], "," );
+ else
+ pattern = "*";
- if( Req->argc > 0 ) pattern = strtok( Req->argv[0], "," );
- else pattern = "*";
+ /* Get sender from prefix, if any */
+ if( Client_Type( Client ) == CLIENT_SERVER )
+ from = Client_Search( Req->prefix );
+ else
+ from = Client;
+
+ if( ! from )
+ return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG,
+ Client_ID( Client ), Req->prefix );
+
+ if( Req->argc == 2 )
+ {
+ /* Forward to other server? */
+ target = Client_Search( Req->argv[1] );
+ if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER ))
+ return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG,
+ Client_ID( Client ), Req->argv[1] );
+
+ if( target != Client_ThisServer( ))
+ {
+ /* Target is indeed an other server, forward it! */
+ return IRC_WriteStrClientPrefix( target, from,
+ "LIST %s :%s", Client_ID( from ),
+ Req->argv[1] );
+ }
+ }
while( pattern )
{
- /* alle Channel durchgehen */
+ /* Loop through all the channels */
chan = Channel_First( );
while( chan )
{
- /* Passt die Suchmaske auf diesen Channel? Bisher werden hier
- * "regular expressions" aber noch nicht unterstuetzt ... */
- if(( strcasecmp( pattern, Channel_Name( chan )) == 0 ) || ( strcmp( pattern, "*" ) == 0 ))
+ /* Check search pattern */
+ if( Match( pattern, Channel_Name( chan )))
{
- /* Treffer! */
- if( ! IRC_WriteStrClient( Client, RPL_LIST_MSG, Client_ID( Client), Channel_Name( chan ), Channel_MemberCount( chan ), Channel_Topic( chan ))) return DISCONNECTED;
+ /* Gotcha! */
+ if( ! strchr( Channel_Modes( chan ), 's' ) ||
+ Channel_IsMemberOf( chan, from ))
+ {
+ if( ! IRC_WriteStrClient( from,
+ RPL_LIST_MSG, Client_ID( from ),
+ Channel_Name( chan ),
+ Channel_MemberCount( chan ),
+ Channel_Topic( chan )))
+ return DISCONNECTED;
+ }
}
chan = Channel_Next( chan );
}
- /* naechsten Namen ermitteln */
- if( Req->argc > 0 ) pattern = strtok( NULL, "," );
- else pattern = NULL;
+ /* Get next name ... */
+ if( Req->argc > 0 )
+ pattern = strtok( NULL, "," );
+ else
+ pattern = NULL;
}
- return IRC_WriteStrClient( Client, RPL_LISTEND_MSG, Client_ID( Client ));
+ return IRC_WriteStrClient( from, RPL_LISTEND_MSG, Client_ID( from ));
} /* IRC_LIST */
+GLOBAL bool
+IRC_CHANINFO( CLIENT *Client, REQUEST *Req )
+{
+ char modes_add[COMMAND_LEN], l[16], *ptr;
+ CLIENT *from;
+ CHANNEL *chan;
+ int arg_topic;
+
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ /* Bad number of parameters? */
+ if(( Req->argc < 2 ) || ( Req->argc == 4 ) || ( Req->argc > 5 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+
+ /* Compatibility kludge */
+ if( Req->argc == 5 ) arg_topic = 4;
+ else if( Req->argc == 3 ) arg_topic = 2;
+ else arg_topic = -1;
+
+ /* Search origin */
+ from = Client_Search( Req->prefix );
+ if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
+
+ /* Search or create channel */
+ chan = Channel_Search( Req->argv[0] );
+ if( ! chan ) chan = Channel_Create( Req->argv[0] );
+ if( ! chan ) return CONNECTED;
+
+ if( Req->argv[1][0] == '+' )
+ {
+ ptr = Channel_Modes( chan );
+ if( ! *ptr )
+ {
+ /* OK, this channel doesn't have modes jet, set the received ones: */
+ Channel_SetModes( chan, &Req->argv[1][1] );
+
+ if( Req->argc == 5 )
+ {
+ if( strchr( Channel_Modes( chan ), 'k' )) Channel_SetKey( chan, Req->argv[2] );
+ if( strchr( Channel_Modes( chan ), 'l' )) Channel_SetMaxUsers( chan, atol( Req->argv[3] ));
+ }
+ else
+ {
+ /* Delete modes which we never want to inherit */
+ Channel_ModeDel( chan, 'l' );
+ Channel_ModeDel( chan, 'k' );
+ }
+
+ strcpy( modes_add, "" );
+ ptr = Channel_Modes( chan );
+ while( *ptr )
+ {
+ if( *ptr == 'l' )
+ {
+ snprintf( l, sizeof( l ), " %ld", Channel_MaxUsers( chan ));
+ strlcat( modes_add, l, sizeof( modes_add ));
+ }
+ if( *ptr == 'k' )
+ {
+ strlcat( modes_add, " ", sizeof( modes_add ));
+ strlcat( modes_add, Channel_Key( chan ), sizeof( modes_add ));
+ }
+ ptr++;
+ }
+
+ /* Inform members of this channel */
+ IRC_WriteStrChannelPrefix( Client, chan, from, false, "MODE %s +%s%s", Req->argv[0], Channel_Modes( chan ), modes_add );
+ }
+ }
+ else Log( LOG_WARNING, "CHANINFO: invalid MODE format ignored!" );
+
+ if( arg_topic > 0 )
+ {
+ /* We got a topic */
+ ptr = Channel_Topic( chan );
+ if(( ! *ptr ) && ( Req->argv[arg_topic][0] ))
+ {
+ /* OK, there is no topic jet */
+ Channel_SetTopic(chan, Client, Req->argv[arg_topic]);
+ IRC_WriteStrChannelPrefix(Client, chan, from, false,
+ "TOPIC %s :%s", Req->argv[0], Channel_Topic(chan));
+ }
+ }
+
+ /* Forward CHANINFO to other serevrs */
+ if( Req->argc == 5 ) IRC_WriteStrServersPrefixFlag( Client, from, 'C', "CHANINFO %s %s %s %s :%s", Req->argv[0], Req->argv[1], Req->argv[2], Req->argv[3], Req->argv[4] );
+ else if( Req->argc == 3 ) IRC_WriteStrServersPrefixFlag( Client, from, 'C', "CHANINFO %s %s :%s", Req->argv[0], Req->argv[1], Req->argv[2] );
+ else IRC_WriteStrServersPrefixFlag( Client, from, 'C', "CHANINFO %s %s", Req->argv[0], Req->argv[1] );
+
+ return CONNECTED;
+} /* IRC_CHANINFO */
+
+
/* -eof- */
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