2 * ngIRCd -- The Next Generation IRC Daemon
3 * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 * Please read the file COPYING, README and AUTHORS for more information.
11 * IRC channel commands
17 static char UNUSED id[] = "$Id: irc-channel.c,v 1.24 2003/01/08 17:45:15 alex Exp $";
33 #include "irc-write.h"
38 #include "irc-channel.h"
42 IRC_JOIN( CLIENT *Client, REQUEST *Req )
44 CHAR *channame, *key, *flags, *topic, modes[8];
45 BOOLEAN is_new_chan, is_invited, is_banned;
49 assert( Client != NULL );
50 assert( Req != NULL );
52 /* Bad number of arguments? */
53 if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
55 /* Who is the sender? */
56 if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
58 if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
60 /* Are channel keys given? */
61 if( Req->argc > 1 ) key = Req->argv[1];
64 /* Channel-Namen durchgehen */
66 channame = strtok( Req->argv[0], "," );
71 /* wird der Channel neu angelegt? */
72 if( Channel_Search( channame )) is_new_chan = FALSE;
73 else is_new_chan = TRUE;
75 /* Hat ein Server Channel-User-Modes uebergeben? */
76 if( Client_Type( Client ) == CLIENT_SERVER )
78 /* Channel-Flags extrahieren */
79 flags = strchr( channame, 0x7 );
88 if( Client_Type( Client ) == CLIENT_USER )
90 /* Test if the user has reached his maximum channel count */
91 if( Client_Type( Client ) == CLIENT_USER )
93 if(( Conf_MaxJoins > 0 ) && ( Channel_CountForUser( Client ) >= Conf_MaxJoins ))
95 IRC_WriteStrClient( Client, ERR_TOOMANYCHANNELS_MSG, Client_ID( Client ), channame );
100 /* Existiert der Channel bereits, oder wird er im Moment neu erzeugt? */
103 /* Erster User im Channel: Operator-Flag setzen */
108 /* Existierenden Channel suchen */
109 chan = Channel_Search( channame );
110 assert( chan != NULL );
112 is_banned = Lists_CheckBanned( target, chan );
113 is_invited = Lists_CheckInvited( target, chan );
115 /* Testen, ob Client gebanned ist */
116 if(( is_banned == TRUE ) && ( is_invited == FALSE ))
118 /* Client ist gebanned (und nicht invited): */
119 IRC_WriteStrClient( Client, ERR_BANNEDFROMCHAN_MSG, Client_ID( Client ), channame );
121 /* Try next name, if any */
122 channame = strtok( NULL, "," );
126 /* Ist der Channel "invite-only"? */
127 if(( strchr( Channel_Modes( chan ), 'i' )) && ( is_invited == FALSE ))
129 /* Channel ist "invite-only" und Client wurde nicht invited: */
130 IRC_WriteStrClient( Client, ERR_INVITEONLYCHAN_MSG, Client_ID( Client ), channame );
132 /* Try next name, if any */
133 channame = strtok( NULL, "," );
137 /* Is the channel protected by a key? */
138 if(( strchr( Channel_Modes( chan ), 'k' )) && ( strcmp( Channel_Key( chan ), key ? key : "" ) != 0 ))
140 /* Bad channel key! */
141 IRC_WriteStrClient( Client, ERR_BADCHANNELKEY_MSG, Client_ID( Client ), channame );
143 /* Try next name, if any */
144 channame = strtok( NULL, "," );
148 /* Are there already too many members? */
149 if(( strchr( Channel_Modes( chan ), 'l' )) && ( Channel_MaxUsers( chan ) <= Channel_MemberCount( chan )))
151 /* Bad channel key! */
152 IRC_WriteStrClient( Client, ERR_CHANNELISFULL_MSG, Client_ID( Client ), channame );
154 /* Try next name, if any */
155 channame = strtok( NULL, "," );
161 /* Channel joinen (und ggf. anlegen) */
162 if( ! Channel_Join( target, channame ))
164 /* naechsten Namen ermitteln */
165 channame = strtok( NULL, "," );
168 if( ! chan ) chan = Channel_Search( channame );
169 assert( chan != NULL );
171 /* Modes setzen (wenn vorhanden) */
172 while( flags && *flags )
174 Channel_UserModeAdd( chan, target, *flags );
178 /* Wenn persistenter Channel und IRC-Operator: zum Channel-OP machen */
179 if(( strchr( Channel_Modes( chan ), 'P' )) && ( strchr( Client_Modes( target ), 'o' ))) Channel_UserModeAdd( chan, target, 'o' );
181 /* Muessen Modes an andere Server gemeldet werden? */
182 strlcpy( &modes[1], Channel_UserModes( chan, target ), sizeof( modes ) - 1 );
183 if( modes[1] ) modes[0] = 0x7;
184 else modes[0] = '\0';
186 /* An andere Server weiterleiten */
187 IRC_WriteStrServersPrefix( Client, target, "JOIN :%s%s", channame, modes );
189 /* im Channel bekannt machen */
190 IRC_WriteStrChannelPrefix( Client, chan, target, FALSE, "JOIN :%s", channame );
193 /* Modes im Channel bekannt machen */
194 IRC_WriteStrChannelPrefix( Client, chan, target, FALSE, "MODE %s +%s %s", channame, &modes[1], Client_ID( target ));
197 if( Client_Type( Client ) == CLIENT_USER )
199 /* an Client bestaetigen */
200 IRC_WriteStrClientPrefix( Client, target, "JOIN :%s", channame );
202 /* Topic an Client schicken */
203 topic = Channel_Topic( chan );
204 if( *topic ) IRC_WriteStrClient( Client, RPL_TOPIC_MSG, Client_ID( Client ), channame, topic );
206 /* Mitglieder an Client Melden */
207 IRC_Send_NAMES( Client, chan );
208 IRC_WriteStrClient( Client, RPL_ENDOFNAMES_MSG, Client_ID( Client ), Channel_Name( chan ));
211 /* naechsten Namen ermitteln */
212 channame = strtok( NULL, "," );
219 IRC_PART( CLIENT *Client, REQUEST *Req )
224 assert( Client != NULL );
225 assert( Req != NULL );
227 /* Falsche Anzahl Parameter? */
228 if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
230 /* Wer ist der Absender? */
231 if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
232 else target = Client;
233 if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
235 /* Channel-Namen durchgehen */
236 chan = strtok( Req->argv[0], "," );
239 if( ! Channel_Part( target, Client, chan, Req->argc > 1 ? Req->argv[1] : Client_ID( target )))
241 /* naechsten Namen ermitteln */
242 chan = strtok( NULL, "," );
246 /* naechsten Namen ermitteln */
247 chan = strtok( NULL, "," );
254 IRC_TOPIC( CLIENT *Client, REQUEST *Req )
260 assert( Client != NULL );
261 assert( Req != NULL );
263 /* Falsche Anzahl Parameter? */
264 if(( Req->argc < 1 ) || ( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
266 if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
268 if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
270 /* Welcher Channel? */
271 chan = Channel_Search( Req->argv[0] );
272 if( ! chan ) return IRC_WriteStrClient( from, ERR_NOSUCHCHANNEL_MSG, Client_ID( from ), Req->argv[0] );
274 /* Ist der User Mitglied in dem Channel? */
275 if( ! Channel_IsMemberOf( chan, from )) return IRC_WriteStrClient( from, ERR_NOTONCHANNEL_MSG, Client_ID( from ), Req->argv[0] );
280 topic = Channel_Topic( chan );
281 if( *topic ) return IRC_WriteStrClient( from, RPL_TOPIC_MSG, Client_ID( from ), Channel_Name( chan ), topic );
282 else return IRC_WriteStrClient( from, RPL_NOTOPIC_MSG, Client_ID( from ), Channel_Name( chan ));
285 if( strchr( Channel_Modes( chan ), 't' ))
287 /* Topic Lock. Ist der User ein Channel Operator? */
288 if( ! strchr( Channel_UserModes( chan, from ), 'o' )) return IRC_WriteStrClient( from, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( from ), Channel_Name( chan ));
292 Channel_SetTopic( chan, Req->argv[1] );
293 Log( LOG_DEBUG, "User \"%s\" set topic on \"%s\": %s", Client_Mask( from ), Channel_Name( chan ), Req->argv[1][0] ? Req->argv[1] : "<none>" );
295 /* im Channel bekannt machen und an Server weiterleiten */
296 IRC_WriteStrServersPrefix( Client, from, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
297 IRC_WriteStrChannelPrefix( Client, chan, from, FALSE, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
299 if( Client_Type( Client ) == CLIENT_USER ) return IRC_WriteStrClientPrefix( Client, Client, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
300 else return CONNECTED;
305 IRC_LIST( CLIENT *Client, REQUEST *Req )
309 CLIENT *from, *target;
311 assert( Client != NULL );
312 assert( Req != NULL );
314 /* Falsche Anzahl Parameter? */
315 if( Req->argc > 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
317 if( Req->argc > 0 ) pattern = strtok( Req->argv[0], "," );
320 /* From aus Prefix ermitteln */
321 if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
323 if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->prefix );
327 /* an anderen Server forwarden */
328 target = Client_Search( Req->argv[1] );
329 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->argv[1] );
331 if( target != Client_ThisServer( ))
333 /* Ok, anderer Server ist das Ziel: forwarden */
334 return IRC_WriteStrClientPrefix( target, from, "LIST %s :%s", from, Req->argv[1] );
340 /* alle Channel durchgehen */
341 chan = Channel_First( );
344 /* Passt die Suchmaske auf diesen Channel? */
345 if( Match( pattern, Channel_Name( chan )))
348 if( ! IRC_WriteStrClient( from, RPL_LIST_MSG, from, Channel_Name( chan ), Channel_MemberCount( chan ), Channel_Topic( chan ))) return DISCONNECTED;
350 chan = Channel_Next( chan );
353 /* naechsten Namen ermitteln */
354 if( Req->argc > 0 ) pattern = strtok( NULL, "," );
358 return IRC_WriteStrClient( from, RPL_LISTEND_MSG, from );
363 IRC_CHANINFO( CLIENT *Client, REQUEST *Req )
369 assert( Client != NULL );
370 assert( Req != NULL );
372 /* Falsche Anzahl Parameter? */
373 if(( Req->argc < 1 ) || ( Req->argc > 3 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
375 /* From-Server suchen */
376 from = Client_Search( Req->prefix );
377 if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
379 /* Channel suchen bzw. erzeugen */
380 chan = Channel_Search( Req->argv[0] );
381 if( ! chan ) chan = Channel_Create( Req->argv[0] );
382 if( ! chan ) return CONNECTED;
384 if( Req->argv[1][0] == '+' )
386 ptr = Channel_Modes( chan );
389 /* OK, this channel doesn't have modes jet, set the received ones: */
390 Channel_SetModes( chan, &Req->argv[1][1] );
391 IRC_WriteStrChannelPrefix( Client, chan, from, FALSE, "MODE %s +%s", Req->argv[0], &Req->argv[1][1] );
393 /* Delete modes which we never want to inherit */
394 Channel_ModeDel( chan, 'l' );
395 Channel_ModeDel( chan, 'k' );
398 else Log( LOG_WARNING, "CHANNELINFO: invalid MODE format ignored!" );
402 /* Es wurde auch ein Topic mit uebermittelt */
403 ptr = Channel_Topic( chan );
406 /* OK, es ist bisher kein Topic gesetzt */
407 Channel_SetTopic( chan, Req->argv[2] );
408 IRC_WriteStrChannelPrefix( Client, chan, from, FALSE, "TOPIC %s :%s", Req->argv[0], Req->argv[2] );
412 /* an andere Server forwarden */
413 IRC_WriteStrServersPrefixFlag( Client, from, 'C', "CHANINFO %s %s :%s", Req->argv[0], Req->argv[1], Req->argv[2] );