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 1.16 2002/02/27 23:23:53 alex Exp $
14 * channel.c: Management der Channels
17 * Revision 1.16 2002/02/27 23:23:53 alex
18 * - Includes fuer einige Header bereinigt.
20 * Revision 1.15 2002/02/27 20:32:10 alex
21 * - neue Funktionen Channel_Topic() und Channel_SetTopic().
23 * Revision 1.14 2002/02/27 15:21:21 alex
24 * - neue Funktion Channel_IsMemberOf() implementiert.
26 * Revision 1.13 2002/02/11 01:00:12 alex
27 * - neue Funktionen Channel_ModeAdd(), Channel_ModeDel(), Channel_UserModes(),
28 * Channel_UserModeAdd(), Channel_UserModeDel().
29 * - Modes in CL2CHAN-Struktur werden nun korrekt initialisiert.
31 * Revision 1.12 2002/02/06 16:48:48 alex
32 * - neue Funktion Channel_Modes() und Channel_IsValidName().
33 * - Channel-Namen werden (besser) validiert.
35 * Revision 1.11 2002/01/29 00:11:10 alex
36 * - neue Funktionen Channel_FirstChannelOf() und Channel_NextChannelOf().
38 * Revision 1.10 2002/01/28 01:16:15 alex
39 * - neue Funktionen Channel_Name(), Channel_First() und Channel_Next().
41 * Revision 1.9 2002/01/27 22:47:11 alex
42 * - PART wird nicht mehr an den Server verschickt, von dem es empfangen wurde.
44 * Revision 1.8 2002/01/27 21:56:54 alex
45 * - weitere Anpassungen an Chennals, v.a. ueber Server-Links.
47 * Revision 1.7 2002/01/27 17:14:33 alex
48 * - diverse Aenderungen fuer Channels ueber mehrere Server.
50 * Revision 1.6 2002/01/26 18:41:55 alex
51 * - CHANNEL- und CL2CHAN-Strukturen in Header verlegt,
52 * - einige neue Funktionen (Channel_GetChannel(), Channel_FirstMember(), ...)
54 * Revision 1.5 2002/01/21 00:12:29 alex
55 * - begonnen, Channels zu implementieren :-)
57 * Revision 1.4 2002/01/16 22:09:07 alex
58 * - neue Funktion Channel_Count().
60 * Revision 1.3 2002/01/02 02:42:58 alex
61 * - Copyright-Texte aktualisiert.
63 * Revision 1.2 2001/12/31 02:18:51 alex
64 * - viele neue Befehle (WHOIS, ISON, OPER, DIE, RESTART),
65 * - neuen Header "defines.h" mit (fast) allen Konstanten.
66 * - Code Cleanups und viele "kleine" Aenderungen & Bugfixes.
68 * Revision 1.1 2001/12/14 08:13:43 alex
69 * - neues Modul begonnen :-)
85 #include "irc-write.h"
93 LOCAL CHANNEL *My_Channels;
94 LOCAL CL2CHAN *My_Cl2Chan;
97 LOCAL CHANNEL *New_Chan( CHAR *Name );
98 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client );
99 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client );
100 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART );
101 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan );
102 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan );
103 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan );
106 GLOBAL VOID Channel_Init( VOID )
113 GLOBAL VOID Channel_Exit( VOID )
116 CL2CHAN *cl2chan, *cl2chan_next;
118 /* Channel-Strukturen freigeben */
127 /* Channel-Zuordnungstabelle freigeben */
128 cl2chan = My_Cl2Chan;
131 cl2chan_next = cl2chan->next;
133 cl2chan = cl2chan_next;
138 GLOBAL BOOLEAN Channel_Join( CLIENT *Client, CHAR *Name )
142 assert( Client != NULL );
143 assert( Name != NULL );
145 /* Valider Channel-Name? */
146 if( ! Channel_IsValidName( Name ))
148 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
153 chan = Channel_Search( Name );
156 /* Ist der Client bereits Mitglied? */
157 if( Get_Cl2Chan( chan, Client )) return FALSE;
161 /* Gibt es noch nicht? Dann neu anlegen: */
162 chan = New_Chan( Name );
163 if( ! chan ) return FALSE;
166 chan->next = My_Channels;
170 /* User dem Channel hinzufuegen */
171 if( ! Add_Client( chan, Client )) return FALSE;
176 GLOBAL BOOLEAN Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
180 assert( Client != NULL );
181 assert( Name != NULL );
184 chan = Channel_Search( Name );
185 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
187 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
191 /* User aus Channel entfernen */
192 if( ! Remove_Client( chan, Client, Origin, Reason, TRUE )) return FALSE;
197 GLOBAL VOID Channel_RemoveClient( CLIENT *Client, CHAR *Reason )
201 assert( Client != NULL );
207 Remove_Client( c, Client, Client_ThisServer( ), Reason, FALSE );
210 } /* Channel_RemoveClient */
213 GLOBAL INT Channel_Count( VOID )
226 } /* Channel_Count */
229 GLOBAL CHAR *Channel_Name( CHANNEL *Chan )
231 assert( Chan != NULL );
236 GLOBAL CHAR *Channel_Modes( CHANNEL *Chan )
238 assert( Chan != NULL );
240 } /* Channel_Modes */
243 GLOBAL CHANNEL *Channel_First( VOID )
246 } /* Channel_First */
249 GLOBAL CHANNEL *Channel_Next( CHANNEL *Chan )
251 assert( Chan != NULL );
256 GLOBAL CHANNEL *Channel_Search( CHAR *Name )
258 /* Channel-Struktur suchen */
262 assert( Name != NULL );
266 if( strcasecmp( Name, c->name ) == 0 ) return c;
270 } /* Channel_Search */
273 GLOBAL CL2CHAN *Channel_FirstMember( CHANNEL *Chan )
275 assert( Chan != NULL );
276 return Get_First_Cl2Chan( NULL, Chan );
277 } /* Channel_FirstMember */
280 GLOBAL CL2CHAN *Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
282 assert( Chan != NULL );
283 assert( Cl2Chan != NULL );
284 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
285 } /* Channel_NextMember */
288 GLOBAL CL2CHAN *Channel_FirstChannelOf( CLIENT *Client )
290 assert( Client != NULL );
291 return Get_First_Cl2Chan( Client, NULL );
292 } /* Channel_FirstChannelOf */
295 GLOBAL CL2CHAN *Channel_NextChannelOf( CLIENT *Client, CL2CHAN *Cl2Chan )
297 assert( Client != NULL );
298 assert( Cl2Chan != NULL );
299 return Get_Next_Cl2Chan( Cl2Chan->next, Client, NULL );
300 } /* Channel_NextChannelOf */
303 GLOBAL CLIENT *Channel_GetClient( CL2CHAN *Cl2Chan )
305 assert( Cl2Chan != NULL );
306 return Cl2Chan->client;
307 } /* Channel_GetClient */
310 GLOBAL CHANNEL *Channel_GetChannel( CL2CHAN *Cl2Chan )
312 assert( Cl2Chan != NULL );
313 return Cl2Chan->channel;
314 } /* Channel_GetChannel */
317 GLOBAL BOOLEAN Channel_IsValidName( CHAR *Name )
319 /* Pr
\9ffen, ob Name als Channelname gueltig */
321 assert( Name != NULL );
323 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN )) return FALSE;
325 } /* Channel_IsValidName */
328 GLOBAL BOOLEAN Channel_ModeAdd( CHANNEL *Chan, CHAR Mode )
330 /* Mode soll gesetzt werden. TRUE wird geliefert, wenn der
331 * Mode neu gesetzt wurde, FALSE, wenn der Channel den Mode
336 assert( Chan != NULL );
338 x[0] = Mode; x[1] = '\0';
339 if( ! strchr( Chan->modes, x[0] ))
341 /* Client hat den Mode noch nicht -> setzen */
342 strcat( Chan->modes, x );
346 } /* Channel_ModeAdd */
349 GLOBAL BOOLEAN Channel_ModeDel( CHANNEL *Chan, CHAR Mode )
351 /* Mode soll geloescht werden. TRUE wird geliefert, wenn der
352 * Mode entfernt wurde, FALSE, wenn der Channel den Mode
353 * ueberhaupt nicht hatte. */
357 assert( Chan != NULL );
359 x[0] = Mode; x[1] = '\0';
361 p = strchr( Chan->modes, x[0] );
362 if( ! p ) return FALSE;
364 /* Client hat den Mode -> loeschen */
371 } /* Channel_ModeDel */
374 GLOBAL BOOLEAN Channel_UserModeAdd( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
376 /* Channel-User-Mode soll gesetzt werden. TRUE wird geliefert,
377 * wenn der Mode neu gesetzt wurde, FALSE, wenn der User den
378 * Channel-Mode bereits hatte. */
383 assert( Chan != NULL );
384 assert( Client != NULL );
386 cl2chan = Get_Cl2Chan( Chan, Client );
387 assert( cl2chan != NULL );
389 x[0] = Mode; x[1] = '\0';
390 if( ! strchr( cl2chan->modes, x[0] ))
392 /* Client hat den Mode noch nicht -> setzen */
393 strcat( cl2chan->modes, x );
397 } /* Channel_UserModeAdd */
400 GLOBAL BOOLEAN Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
402 /* Channel-User-Mode soll geloescht werden. TRUE wird geliefert,
403 * wenn der Mode entfernt wurde, FALSE, wenn der User den Channel-Mode
404 * ueberhaupt nicht hatte. */
409 assert( Chan != NULL );
410 assert( Client != NULL );
412 cl2chan = Get_Cl2Chan( Chan, Client );
413 assert( cl2chan != NULL );
415 x[0] = Mode; x[1] = '\0';
417 p = strchr( cl2chan->modes, x[0] );
418 if( ! p ) return FALSE;
420 /* Client hat den Mode -> loeschen */
427 } /* Channel_UserModeDel */
430 GLOBAL CHAR *Channel_UserModes( CHANNEL *Chan, CLIENT *Client )
432 /* Channel-Modes eines Users liefern */
436 assert( Chan != NULL );
437 assert( Client != NULL );
439 cl2chan = Get_Cl2Chan( Chan, Client );
440 assert( cl2chan != NULL );
442 return cl2chan->modes;
443 } /* Channel_UserModes */
446 GLOBAL BOOLEAN Channel_IsMemberOf( CHANNEL *Chan, CLIENT *Client )
448 /* Pruefen, ob Client Mitglied in Channel ist */
450 assert( Chan != NULL );
451 assert( Client != NULL );
453 if( Get_Cl2Chan( Chan, Client )) return TRUE;
455 } /* Channel_IsMemberOf */
458 GLOBAL CHAR *Channel_Topic( CHANNEL *Chan )
460 assert( Chan != NULL );
462 } /* Channel_Topic */
465 GLOBAL VOID Channel_SetTopic( CHANNEL *Chan, CHAR *Topic )
467 assert( Chan != NULL );
468 assert( Topic != NULL );
470 strncpy( Chan->topic, Topic, CHANNEL_TOPIC_LEN );
471 Chan->topic[CHANNEL_TOPIC_LEN - 1] = '\0';
472 } /* Channel_SetTopic */
475 LOCAL CHANNEL *New_Chan( CHAR *Name )
477 /* Neue Channel-Struktur anlegen */
481 assert( Name != NULL );
483 c = malloc( sizeof( CHANNEL ));
486 Log( LOG_EMERG, "Can't allocate memory!" );
490 strncpy( c->name, Name, CHANNEL_NAME_LEN );
491 c->name[CHANNEL_NAME_LEN - 1] = '\0';
492 strcpy( c->modes, "" );
493 strcpy( c->topic, "" );
495 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
501 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
505 assert( Chan != NULL );
506 assert( Client != NULL );
508 cl2chan = My_Cl2Chan;
511 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
512 cl2chan = cl2chan->next;
518 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client )
522 assert( Chan != NULL );
523 assert( Client != NULL );
525 /* neue CL2CHAN-Struktur anlegen */
526 cl2chan = malloc( sizeof( CL2CHAN ));
529 Log( LOG_EMERG, "Can't allocate memory!" );
532 cl2chan->channel = Chan;
533 cl2chan->client = Client;
534 strcpy( cl2chan->modes, "" );
537 cl2chan->next = My_Cl2Chan;
538 My_Cl2Chan = cl2chan;
540 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
546 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART )
548 CL2CHAN *cl2chan, *last_cl2chan;
551 assert( Chan != NULL );
552 assert( Client != NULL );
553 assert( Origin != NULL );
554 assert( Reason != NULL );
557 cl2chan = My_Cl2Chan;
560 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
561 last_cl2chan = cl2chan;
562 cl2chan = cl2chan->next;
564 if( ! cl2chan ) return FALSE;
566 c = cl2chan->channel;
569 /* Aus Verkettung loesen und freigeben */
570 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
571 else My_Cl2Chan = cl2chan->next;
574 if( ServerPART ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
575 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
576 if(( Client_Conn( Origin ) > NONE ) && ( Client_Type( Origin ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
578 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
580 /* Wenn Channel nun leer: loeschen */
581 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
584 } /* Remove_Client */
587 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
589 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
590 } /* Get_First_Cl2Chan */
593 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
597 assert( Client != NULL || Channel != NULL );
602 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
603 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
604 cl2chan = cl2chan->next;
607 } /* Get_Next_Cl2Chan */
610 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan )
612 /* Channel-Struktur loeschen */
614 CHANNEL *chan, *last_chan;
620 if( chan == Chan ) break;
624 if( ! chan ) return FALSE;
626 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
628 /* Neu verketten und freigeben */
629 if( last_chan ) last_chan->next = chan->next;
630 else My_Channels = chan->next;
634 } /* Delete_Channel */