+GLOBAL BOOLEAN IRC_TOPIC( CLIENT *Client, REQUEST *Req )
+{
+ CHANNEL *chan;
+ CLIENT *from;
+ CHAR *topic;
+
+ 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( Client_Type( Client ) == CLIENT_SERVER ) from = Client_GetFromID( Req->prefix );
+ else from = Client;
+ if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
+
+ /* Welcher Channel? */
+ chan = Channel_Search( Req->argv[0] );
+ if( ! chan ) return IRC_WriteStrClient( from, ERR_NOTONCHANNEL_MSG, Client_ID( from ), Req->argv[0] );
+
+ /* Ist der User Mitglied in dem Channel? */
+ if( ! Channel_IsMemberOf( chan, from )) return IRC_WriteStrClient( from, ERR_NOTONCHANNEL_MSG, Client_ID( from ), Req->argv[0] );
+
+ 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 ));
+ }
+
+ if( strchr( Channel_Modes( chan ), 't' ))
+ {
+ /* Topic Lock. Ist der User ein Channel Operator? */
+ 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>" );
+
+ /* im Channel bekannt machen */
+ IRC_WriteStrChannelPrefix( Client, chan, from, TRUE, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
+ return IRC_WriteStrClientPrefix( from, from, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
+} /* IRC_TOPIC */
+
+