378 lines
11 KiB
C
378 lines
11 KiB
C
/*
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* ngIRCd -- The Next Generation IRC Daemon
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* Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
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*
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* Dieses Programm ist freie Software. Sie koennen es unter den Bedingungen
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* der GNU General Public License (GPL), wie von der Free Software Foundation
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* herausgegeben, weitergeben und/oder modifizieren, entweder unter Version 2
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* der Lizenz oder (wenn Sie es wuenschen) jeder spaeteren Version.
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* Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
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* der an ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
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*
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* $Id: irc-channel.c,v 1.17 2002/11/30 17:39:56 alex Exp $
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*
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* irc-channel.c: IRC-Channel-Befehle
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*/
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#include "portab.h"
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#include "imp.h"
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#include <assert.h>
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#include <string.h>
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#include "defines.h"
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#include "conn.h"
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#include "client.h"
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#include "channel.h"
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#include "lists.h"
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#include "log.h"
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#include "match.h"
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#include "messages.h"
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#include "parse.h"
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#include "irc-info.h"
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#include "irc-write.h"
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#include "exp.h"
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#include "irc-channel.h"
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GLOBAL BOOLEAN
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IRC_JOIN( CLIENT *Client, REQUEST *Req )
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{
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CHAR *channame, *flags, *topic, modes[8];
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BOOLEAN is_new_chan, is_invited, is_banned;
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CLIENT *target;
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CHANNEL *chan;
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assert( Client != NULL );
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assert( Req != NULL );
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/* Falsche Anzahl Parameter? */
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if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
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/* Wer ist der Absender? */
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if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
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else target = Client;
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if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
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/* Channel-Namen durchgehen */
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chan = NULL;
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channame = strtok( Req->argv[0], "," );
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while( channame )
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{
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chan = flags = NULL;
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/* wird der Channel neu angelegt? */
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if( Channel_Search( channame )) is_new_chan = FALSE;
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else is_new_chan = TRUE;
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/* Hat ein Server Channel-User-Modes uebergeben? */
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if( Client_Type( Client ) == CLIENT_SERVER )
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{
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/* Channel-Flags extrahieren */
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flags = strchr( channame, 0x7 );
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if( flags )
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{
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*flags = '\0';
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flags++;
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}
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}
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/* Lokaler Client? */
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if( Client_Type( Client ) == CLIENT_USER )
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{
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/* Existiert der Channel bereits, oder wird er im Moment neu erzeugt? */
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if( is_new_chan )
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{
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/* Erster User im Channel: Operator-Flag setzen */
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flags = "o";
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}
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else
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{
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/* Existierenden Channel suchen */
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chan = Channel_Search( channame );
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assert( chan != NULL );
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is_banned = Lists_CheckBanned( target, chan );
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is_invited = Lists_CheckInvited( target, chan );
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/* Testen, ob Client gebanned ist */
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if(( is_banned == TRUE ) && ( is_invited == FALSE ))
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{
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/* Client ist gebanned (und nicht invited): */
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IRC_WriteStrClient( Client, ERR_BANNEDFROMCHAN_MSG, Client_ID( Client ), channame );
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/* naechsten Namen ermitteln */
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channame = strtok( NULL, "," );
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continue;
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}
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/* Ist der Channel "invite-only"? */
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if(( strchr( Channel_Modes( chan ), 'i' ) != NULL ) && ( is_invited == FALSE ))
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{
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/* Channel ist "invite-only" und Client wurde nicht invited: */
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IRC_WriteStrClient( Client, ERR_INVITEONLYCHAN_MSG, Client_ID( Client ), channame );
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/* naechsten Namen ermitteln */
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channame = strtok( NULL, "," );
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continue;
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}
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}
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}
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/* Channel joinen (und ggf. anlegen) */
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if( ! Channel_Join( target, channame ))
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{
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/* naechsten Namen ermitteln */
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channame = strtok( NULL, "," );
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continue;
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}
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if( ! chan ) chan = Channel_Search( channame );
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assert( chan != NULL );
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/* Modes setzen (wenn vorhanden) */
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while( flags && *flags )
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{
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Channel_UserModeAdd( chan, target, *flags );
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flags++;
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}
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/* Wenn persistenter Channel und IRC-Operator: zum Channel-OP machen */
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if(( strchr( Channel_Modes( chan ), 'P' )) && ( strchr( Client_Modes( target ), 'o' ))) Channel_UserModeAdd( chan, target, 'o' );
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/* Muessen Modes an andere Server gemeldet werden? */
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strcpy( &modes[1], Channel_UserModes( chan, target ));
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if( modes[1] ) modes[0] = 0x7;
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else modes[0] = '\0';
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/* An andere Server weiterleiten */
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IRC_WriteStrServersPrefix( Client, target, "JOIN :%s%s", channame, modes );
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/* im Channel bekannt machen */
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IRC_WriteStrChannelPrefix( Client, chan, target, FALSE, "JOIN :%s", channame );
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if( modes[1] )
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{
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/* Modes im Channel bekannt machen */
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IRC_WriteStrChannelPrefix( Client, chan, target, FALSE, "MODE %s +%s %s", channame, &modes[1], Client_ID( target ));
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}
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if( Client_Type( Client ) == CLIENT_USER )
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{
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/* an Client bestaetigen */
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IRC_WriteStrClientPrefix( Client, target, "JOIN :%s", channame );
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/* Topic an Client schicken */
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topic = Channel_Topic( chan );
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if( *topic ) IRC_WriteStrClient( Client, RPL_TOPIC_MSG, Client_ID( Client ), channame, topic );
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/* Mitglieder an Client Melden */
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IRC_Send_NAMES( Client, chan );
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IRC_WriteStrClient( Client, RPL_ENDOFNAMES_MSG, Client_ID( Client ), Channel_Name( chan ));
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}
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/* naechsten Namen ermitteln */
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channame = strtok( NULL, "," );
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}
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return CONNECTED;
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} /* IRC_JOIN */
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GLOBAL BOOLEAN
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IRC_PART( CLIENT *Client, REQUEST *Req )
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{
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CLIENT *target;
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CHAR *chan;
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assert( Client != NULL );
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assert( Req != NULL );
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/* Falsche Anzahl Parameter? */
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if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
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/* Wer ist der Absender? */
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if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
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else target = Client;
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if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
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/* Channel-Namen durchgehen */
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chan = strtok( Req->argv[0], "," );
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while( chan )
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{
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if( ! Channel_Part( target, Client, chan, Req->argc > 1 ? Req->argv[1] : Client_ID( target )))
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{
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/* naechsten Namen ermitteln */
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chan = strtok( NULL, "," );
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continue;
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}
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/* naechsten Namen ermitteln */
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chan = strtok( NULL, "," );
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}
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return CONNECTED;
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} /* IRC_PART */
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GLOBAL BOOLEAN
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IRC_TOPIC( CLIENT *Client, REQUEST *Req )
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{
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CHANNEL *chan;
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CLIENT *from;
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CHAR *topic;
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assert( Client != NULL );
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assert( Req != NULL );
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/* Falsche Anzahl Parameter? */
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if(( Req->argc < 1 ) || ( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
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if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
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else from = Client;
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if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
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/* Welcher Channel? */
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chan = Channel_Search( Req->argv[0] );
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if( ! chan ) return IRC_WriteStrClient( from, ERR_NOSUCHCHANNEL_MSG, Client_ID( from ), Req->argv[0] );
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/* Ist der User Mitglied in dem Channel? */
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if( ! Channel_IsMemberOf( chan, from )) return IRC_WriteStrClient( from, ERR_NOTONCHANNEL_MSG, Client_ID( from ), Req->argv[0] );
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if( Req->argc == 1 )
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{
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/* Topic erfragen */
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topic = Channel_Topic( chan );
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if( *topic ) return IRC_WriteStrClient( from, RPL_TOPIC_MSG, Client_ID( from ), Channel_Name( chan ), topic );
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else return IRC_WriteStrClient( from, RPL_NOTOPIC_MSG, Client_ID( from ), Channel_Name( chan ));
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}
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if( strchr( Channel_Modes( chan ), 't' ))
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{
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/* Topic Lock. Ist der User ein Channel Operator? */
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if( ! strchr( Channel_UserModes( chan, from ), 'o' )) return IRC_WriteStrClient( from, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( from ), Channel_Name( chan ));
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}
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/* Topic setzen */
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Channel_SetTopic( chan, Req->argv[1] );
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Log( LOG_DEBUG, "User \"%s\" set topic on \"%s\": %s", Client_Mask( from ), Channel_Name( chan ), Req->argv[1][0] ? Req->argv[1] : "<none>" );
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/* im Channel bekannt machen und an Server weiterleiten */
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IRC_WriteStrServersPrefix( Client, from, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
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IRC_WriteStrChannelPrefix( Client, chan, from, FALSE, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
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if( Client_Type( Client ) == CLIENT_USER ) return IRC_WriteStrClientPrefix( Client, Client, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
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else return CONNECTED;
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} /* IRC_TOPIC */
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GLOBAL BOOLEAN
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IRC_LIST( CLIENT *Client, REQUEST *Req )
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{
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CHAR *pattern;
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CHANNEL *chan;
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CLIENT *from, *target;
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assert( Client != NULL );
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assert( Req != NULL );
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/* Falsche Anzahl Parameter? */
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if( Req->argc > 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
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if( Req->argc > 0 ) pattern = strtok( Req->argv[0], "," );
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else pattern = "*";
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/* From aus Prefix ermitteln */
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if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
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else from = Client;
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if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->prefix );
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if( Req->argc == 2 )
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{
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/* an anderen Server forwarden */
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target = Client_Search( Req->argv[1] );
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if( ! target ) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->argv[1] );
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if( target != Client_ThisServer( ))
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{
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/* Ok, anderer Server ist das Ziel: forwarden */
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return IRC_WriteStrClientPrefix( target, from, "LIST %s :%s", from, Req->argv[1] );
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}
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}
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while( pattern )
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{
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/* alle Channel durchgehen */
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chan = Channel_First( );
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while( chan )
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{
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/* Passt die Suchmaske auf diesen Channel? */
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if( Match( pattern, Channel_Name( chan )))
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{
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/* Treffer! */
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if( ! IRC_WriteStrClient( from, RPL_LIST_MSG, from, Channel_Name( chan ), Channel_MemberCount( chan ), Channel_Topic( chan ))) return DISCONNECTED;
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}
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chan = Channel_Next( chan );
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}
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/* naechsten Namen ermitteln */
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if( Req->argc > 0 ) pattern = strtok( NULL, "," );
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else pattern = NULL;
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}
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return IRC_WriteStrClient( from, RPL_LISTEND_MSG, from );
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} /* IRC_LIST */
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GLOBAL BOOLEAN
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IRC_CHANINFO( CLIENT *Client, REQUEST *Req )
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{
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CLIENT *from;
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CHANNEL *chan;
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CHAR *ptr;
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assert( Client != NULL );
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assert( Req != NULL );
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/* Falsche Anzahl Parameter? */
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if(( Req->argc < 1 ) || ( Req->argc > 3 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
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/* From-Server suchen */
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from = Client_Search( Req->prefix );
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if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
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/* Channel suchen bzw. erzeugen */
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chan = Channel_Search( Req->argv[0] );
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if( ! chan ) chan = Channel_Create( Req->argv[0] );
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if( ! chan ) return CONNECTED;
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if( Req->argv[1][0] == '+' )
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{
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ptr = Channel_Modes( chan );
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if( ! *ptr )
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{
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/* OK, es sind noch keine Modes gesetzt */
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Channel_SetModes( chan, &Req->argv[1][1] );
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IRC_WriteStrChannelPrefix( Client, chan, from, FALSE, "MODE %s +%s", Req->argv[0], &Req->argv[1][1] );
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}
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}
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else Log( LOG_WARNING, "CHANNELINFO: invalid MODE format ignored!" );
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if( Req->argc == 3 )
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{
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/* Es wurde auch ein Topic mit uebermittelt */
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ptr = Channel_Topic( chan );
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if( ! *ptr )
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{
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/* OK, es ist bisher kein Topic gesetzt */
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Channel_SetTopic( chan, Req->argv[2] );
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IRC_WriteStrChannelPrefix( Client, chan, from, FALSE, "TOPIC %s :%s", Req->argv[0], Req->argv[2] );
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}
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}
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/* an andere Server forwarden */
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IRC_WriteStrServersPrefixFlag( Client, from, 'C', "CHANINFO %s %s :%s", Req->argv[0], Req->argv[1], Req->argv[2] );
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return CONNECTED;
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} /* IRC_CHANINFO */
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/* -eof- */
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