2 * ngIRCd -- The Next Generation IRC Daemon
3 * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
5 * Dieses Programm ist freie Software. Sie koennen es unter den Bedingungen
6 * der GNU General Public License (GPL), wie von der Free Software Foundation
7 * herausgegeben, weitergeben und/oder modifizieren, entweder unter Version 2
8 * der Lizenz oder (wenn Sie es wuenschen) jeder spaeteren Version.
9 * Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
10 * der an ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
12 * $Id: channel.c,v 1.15 2002/02/27 20:32:10 alex Exp $
14 * channel.c: Management der Channels
17 * Revision 1.15 2002/02/27 20:32:10 alex
18 * - neue Funktionen Channel_Topic() und Channel_SetTopic().
20 * Revision 1.14 2002/02/27 15:21:21 alex
21 * - neue Funktion Channel_IsMemberOf() implementiert.
23 * Revision 1.13 2002/02/11 01:00:12 alex
24 * - neue Funktionen Channel_ModeAdd(), Channel_ModeDel(), Channel_UserModes(),
25 * Channel_UserModeAdd(), Channel_UserModeDel().
26 * - Modes in CL2CHAN-Struktur werden nun korrekt initialisiert.
28 * Revision 1.12 2002/02/06 16:48:48 alex
29 * - neue Funktion Channel_Modes() und Channel_IsValidName().
30 * - Channel-Namen werden (besser) validiert.
32 * Revision 1.11 2002/01/29 00:11:10 alex
33 * - neue Funktionen Channel_FirstChannelOf() und Channel_NextChannelOf().
35 * Revision 1.10 2002/01/28 01:16:15 alex
36 * - neue Funktionen Channel_Name(), Channel_First() und Channel_Next().
38 * Revision 1.9 2002/01/27 22:47:11 alex
39 * - PART wird nicht mehr an den Server verschickt, von dem es empfangen wurde.
41 * Revision 1.8 2002/01/27 21:56:54 alex
42 * - weitere Anpassungen an Chennals, v.a. ueber Server-Links.
44 * Revision 1.7 2002/01/27 17:14:33 alex
45 * - diverse Aenderungen fuer Channels ueber mehrere Server.
47 * Revision 1.6 2002/01/26 18:41:55 alex
48 * - CHANNEL- und CL2CHAN-Strukturen in Header verlegt,
49 * - einige neue Funktionen (Channel_GetChannel(), Channel_FirstMember(), ...)
51 * Revision 1.5 2002/01/21 00:12:29 alex
52 * - begonnen, Channels zu implementieren :-)
54 * Revision 1.4 2002/01/16 22:09:07 alex
55 * - neue Funktion Channel_Count().
57 * Revision 1.3 2002/01/02 02:42:58 alex
58 * - Copyright-Texte aktualisiert.
60 * Revision 1.2 2001/12/31 02:18:51 alex
61 * - viele neue Befehle (WHOIS, ISON, OPER, DIE, RESTART),
62 * - neuen Header "defines.h" mit (fast) allen Konstanten.
63 * - Code Cleanups und viele "kleine" Aenderungen & Bugfixes.
65 * Revision 1.1 2001/12/14 08:13:43 alex
66 * - neues Modul begonnen :-)
90 LOCAL CHANNEL *My_Channels;
91 LOCAL CL2CHAN *My_Cl2Chan;
94 LOCAL CHANNEL *New_Chan( CHAR *Name );
95 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client );
96 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client );
97 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART );
98 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan );
99 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan );
100 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan );
103 GLOBAL VOID Channel_Init( VOID )
110 GLOBAL VOID Channel_Exit( VOID )
113 CL2CHAN *cl2chan, *cl2chan_next;
115 /* Channel-Strukturen freigeben */
124 /* Channel-Zuordnungstabelle freigeben */
125 cl2chan = My_Cl2Chan;
128 cl2chan_next = cl2chan->next;
130 cl2chan = cl2chan_next;
135 GLOBAL BOOLEAN Channel_Join( CLIENT *Client, CHAR *Name )
139 assert( Client != NULL );
140 assert( Name != NULL );
142 /* Valider Channel-Name? */
143 if( ! Channel_IsValidName( Name ))
145 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
150 chan = Channel_Search( Name );
153 /* Ist der Client bereits Mitglied? */
154 if( Get_Cl2Chan( chan, Client )) return FALSE;
158 /* Gibt es noch nicht? Dann neu anlegen: */
159 chan = New_Chan( Name );
160 if( ! chan ) return FALSE;
163 chan->next = My_Channels;
167 /* User dem Channel hinzufuegen */
168 if( ! Add_Client( chan, Client )) return FALSE;
173 GLOBAL BOOLEAN Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
177 assert( Client != NULL );
178 assert( Name != NULL );
181 chan = Channel_Search( Name );
182 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
184 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
188 /* User aus Channel entfernen */
189 if( ! Remove_Client( chan, Client, Origin, Reason, TRUE )) return FALSE;
194 GLOBAL VOID Channel_RemoveClient( CLIENT *Client, CHAR *Reason )
198 assert( Client != NULL );
204 Remove_Client( c, Client, Client_ThisServer( ), Reason, FALSE );
207 } /* Channel_RemoveClient */
210 GLOBAL INT Channel_Count( VOID )
223 } /* Channel_Count */
226 GLOBAL CHAR *Channel_Name( CHANNEL *Chan )
228 assert( Chan != NULL );
233 GLOBAL CHAR *Channel_Modes( CHANNEL *Chan )
235 assert( Chan != NULL );
237 } /* Channel_Modes */
240 GLOBAL CHANNEL *Channel_First( VOID )
243 } /* Channel_First */
246 GLOBAL CHANNEL *Channel_Next( CHANNEL *Chan )
248 assert( Chan != NULL );
253 GLOBAL CHANNEL *Channel_Search( CHAR *Name )
255 /* Channel-Struktur suchen */
259 assert( Name != NULL );
263 if( strcasecmp( Name, c->name ) == 0 ) return c;
267 } /* Channel_Search */
270 GLOBAL CL2CHAN *Channel_FirstMember( CHANNEL *Chan )
272 assert( Chan != NULL );
273 return Get_First_Cl2Chan( NULL, Chan );
274 } /* Channel_FirstMember */
277 GLOBAL CL2CHAN *Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
279 assert( Chan != NULL );
280 assert( Cl2Chan != NULL );
281 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
282 } /* Channel_NextMember */
285 GLOBAL CL2CHAN *Channel_FirstChannelOf( CLIENT *Client )
287 assert( Client != NULL );
288 return Get_First_Cl2Chan( Client, NULL );
289 } /* Channel_FirstChannelOf */
292 GLOBAL CL2CHAN *Channel_NextChannelOf( CLIENT *Client, CL2CHAN *Cl2Chan )
294 assert( Client != NULL );
295 assert( Cl2Chan != NULL );
296 return Get_Next_Cl2Chan( Cl2Chan->next, Client, NULL );
297 } /* Channel_NextChannelOf */
300 GLOBAL CLIENT *Channel_GetClient( CL2CHAN *Cl2Chan )
302 assert( Cl2Chan != NULL );
303 return Cl2Chan->client;
304 } /* Channel_GetClient */
307 GLOBAL CHANNEL *Channel_GetChannel( CL2CHAN *Cl2Chan )
309 assert( Cl2Chan != NULL );
310 return Cl2Chan->channel;
311 } /* Channel_GetChannel */
314 GLOBAL BOOLEAN Channel_IsValidName( CHAR *Name )
316 /* Pr
\9ffen, ob Name als Channelname gueltig */
318 assert( Name != NULL );
320 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN )) return FALSE;
322 } /* Channel_IsValidName */
325 GLOBAL BOOLEAN Channel_ModeAdd( CHANNEL *Chan, CHAR Mode )
327 /* Mode soll gesetzt werden. TRUE wird geliefert, wenn der
328 * Mode neu gesetzt wurde, FALSE, wenn der Channel den Mode
333 assert( Chan != NULL );
335 x[0] = Mode; x[1] = '\0';
336 if( ! strchr( Chan->modes, x[0] ))
338 /* Client hat den Mode noch nicht -> setzen */
339 strcat( Chan->modes, x );
343 } /* Channel_ModeAdd */
346 GLOBAL BOOLEAN Channel_ModeDel( CHANNEL *Chan, CHAR Mode )
348 /* Mode soll geloescht werden. TRUE wird geliefert, wenn der
349 * Mode entfernt wurde, FALSE, wenn der Channel den Mode
350 * ueberhaupt nicht hatte. */
354 assert( Chan != NULL );
356 x[0] = Mode; x[1] = '\0';
358 p = strchr( Chan->modes, x[0] );
359 if( ! p ) return FALSE;
361 /* Client hat den Mode -> loeschen */
368 } /* Channel_ModeDel */
371 GLOBAL BOOLEAN Channel_UserModeAdd( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
373 /* Channel-User-Mode soll gesetzt werden. TRUE wird geliefert,
374 * wenn der Mode neu gesetzt wurde, FALSE, wenn der User den
375 * Channel-Mode bereits hatte. */
380 assert( Chan != NULL );
381 assert( Client != NULL );
383 cl2chan = Get_Cl2Chan( Chan, Client );
384 assert( cl2chan != NULL );
386 x[0] = Mode; x[1] = '\0';
387 if( ! strchr( cl2chan->modes, x[0] ))
389 /* Client hat den Mode noch nicht -> setzen */
390 strcat( cl2chan->modes, x );
394 } /* Channel_UserModeAdd */
397 GLOBAL BOOLEAN Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
399 /* Channel-User-Mode soll geloescht werden. TRUE wird geliefert,
400 * wenn der Mode entfernt wurde, FALSE, wenn der User den Channel-Mode
401 * ueberhaupt nicht hatte. */
406 assert( Chan != NULL );
407 assert( Client != NULL );
409 cl2chan = Get_Cl2Chan( Chan, Client );
410 assert( cl2chan != NULL );
412 x[0] = Mode; x[1] = '\0';
414 p = strchr( cl2chan->modes, x[0] );
415 if( ! p ) return FALSE;
417 /* Client hat den Mode -> loeschen */
424 } /* Channel_UserModeDel */
427 GLOBAL CHAR *Channel_UserModes( CHANNEL *Chan, CLIENT *Client )
429 /* Channel-Modes eines Users liefern */
433 assert( Chan != NULL );
434 assert( Client != NULL );
436 cl2chan = Get_Cl2Chan( Chan, Client );
437 assert( cl2chan != NULL );
439 return cl2chan->modes;
440 } /* Channel_UserModes */
443 GLOBAL BOOLEAN Channel_IsMemberOf( CHANNEL *Chan, CLIENT *Client )
445 /* Pruefen, ob Client Mitglied in Channel ist */
447 assert( Chan != NULL );
448 assert( Client != NULL );
450 if( Get_Cl2Chan( Chan, Client )) return TRUE;
452 } /* Channel_IsMemberOf */
455 GLOBAL CHAR *Channel_Topic( CHANNEL *Chan )
457 assert( Chan != NULL );
459 } /* Channel_Topic */
462 GLOBAL VOID Channel_SetTopic( CHANNEL *Chan, CHAR *Topic )
464 assert( Chan != NULL );
465 assert( Topic != NULL );
467 strncpy( Chan->topic, Topic, CHANNEL_TOPIC_LEN );
468 Chan->topic[CHANNEL_TOPIC_LEN - 1] = '\0';
469 } /* Channel_SetTopic */
472 LOCAL CHANNEL *New_Chan( CHAR *Name )
474 /* Neue Channel-Struktur anlegen */
478 assert( Name != NULL );
480 c = malloc( sizeof( CHANNEL ));
483 Log( LOG_EMERG, "Can't allocate memory!" );
487 strncpy( c->name, Name, CHANNEL_NAME_LEN );
488 c->name[CHANNEL_NAME_LEN - 1] = '\0';
489 strcpy( c->modes, "" );
490 strcpy( c->topic, "" );
492 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
498 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
502 assert( Chan != NULL );
503 assert( Client != NULL );
505 cl2chan = My_Cl2Chan;
508 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
509 cl2chan = cl2chan->next;
515 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client )
519 assert( Chan != NULL );
520 assert( Client != NULL );
522 /* neue CL2CHAN-Struktur anlegen */
523 cl2chan = malloc( sizeof( CL2CHAN ));
526 Log( LOG_EMERG, "Can't allocate memory!" );
529 cl2chan->channel = Chan;
530 cl2chan->client = Client;
531 strcpy( cl2chan->modes, "" );
534 cl2chan->next = My_Cl2Chan;
535 My_Cl2Chan = cl2chan;
537 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
543 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART )
545 CL2CHAN *cl2chan, *last_cl2chan;
548 assert( Chan != NULL );
549 assert( Client != NULL );
550 assert( Origin != NULL );
551 assert( Reason != NULL );
554 cl2chan = My_Cl2Chan;
557 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
558 last_cl2chan = cl2chan;
559 cl2chan = cl2chan->next;
561 if( ! cl2chan ) return FALSE;
563 c = cl2chan->channel;
566 /* Aus Verkettung loesen und freigeben */
567 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
568 else My_Cl2Chan = cl2chan->next;
571 if( ServerPART ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
572 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
573 if(( Client_Conn( Origin ) > NONE ) && ( Client_Type( Origin ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
575 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
577 /* Wenn Channel nun leer: loeschen */
578 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
581 } /* Remove_Client */
584 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
586 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
587 } /* Get_First_Cl2Chan */
590 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
594 assert( Client != NULL || Channel != NULL );
599 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
600 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
601 cl2chan = cl2chan->next;
604 } /* Get_Next_Cl2Chan */
607 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan )
609 /* Channel-Struktur loeschen */
611 CHANNEL *chan, *last_chan;
617 if( chan == Chan ) break;
621 if( ! chan ) return FALSE;
623 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
625 /* Neu verketten und freigeben */
626 if( last_chan ) last_chan->next = chan->next;
627 else My_Channels = chan->next;
631 } /* Delete_Channel */