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 1.14 2002/02/27 15:21:21 alex Exp $
14 * channel.c: Management der Channels
17 * Revision 1.14 2002/02/27 15:21:21 alex
18 * - neue Funktion Channel_IsMemberOf() implementiert.
20 * Revision 1.13 2002/02/11 01:00:12 alex
21 * - neue Funktionen Channel_ModeAdd(), Channel_ModeDel(), Channel_UserModes(),
22 * Channel_UserModeAdd(), Channel_UserModeDel().
23 * - Modes in CL2CHAN-Struktur werden nun korrekt initialisiert.
25 * Revision 1.12 2002/02/06 16:48:48 alex
26 * - neue Funktion Channel_Modes() und Channel_IsValidName().
27 * - Channel-Namen werden (besser) validiert.
29 * Revision 1.11 2002/01/29 00:11:10 alex
30 * - neue Funktionen Channel_FirstChannelOf() und Channel_NextChannelOf().
32 * Revision 1.10 2002/01/28 01:16:15 alex
33 * - neue Funktionen Channel_Name(), Channel_First() und Channel_Next().
35 * Revision 1.9 2002/01/27 22:47:11 alex
36 * - PART wird nicht mehr an den Server verschickt, von dem es empfangen wurde.
38 * Revision 1.8 2002/01/27 21:56:54 alex
39 * - weitere Anpassungen an Chennals, v.a. ueber Server-Links.
41 * Revision 1.7 2002/01/27 17:14:33 alex
42 * - diverse Aenderungen fuer Channels ueber mehrere Server.
44 * Revision 1.6 2002/01/26 18:41:55 alex
45 * - CHANNEL- und CL2CHAN-Strukturen in Header verlegt,
46 * - einige neue Funktionen (Channel_GetChannel(), Channel_FirstMember(), ...)
48 * Revision 1.5 2002/01/21 00:12:29 alex
49 * - begonnen, Channels zu implementieren :-)
51 * Revision 1.4 2002/01/16 22:09:07 alex
52 * - neue Funktion Channel_Count().
54 * Revision 1.3 2002/01/02 02:42:58 alex
55 * - Copyright-Texte aktualisiert.
57 * Revision 1.2 2001/12/31 02:18:51 alex
58 * - viele neue Befehle (WHOIS, ISON, OPER, DIE, RESTART),
59 * - neuen Header "defines.h" mit (fast) allen Konstanten.
60 * - Code Cleanups und viele "kleine" Aenderungen & Bugfixes.
62 * Revision 1.1 2001/12/14 08:13:43 alex
63 * - neues Modul begonnen :-)
87 LOCAL CHANNEL *My_Channels;
88 LOCAL CL2CHAN *My_Cl2Chan;
91 LOCAL CHANNEL *New_Chan( CHAR *Name );
92 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client );
93 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client );
94 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART );
95 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan );
96 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan );
97 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan );
100 GLOBAL VOID Channel_Init( VOID )
107 GLOBAL VOID Channel_Exit( VOID )
110 CL2CHAN *cl2chan, *cl2chan_next;
112 /* Channel-Strukturen freigeben */
121 /* Channel-Zuordnungstabelle freigeben */
122 cl2chan = My_Cl2Chan;
125 cl2chan_next = cl2chan->next;
127 cl2chan = cl2chan_next;
132 GLOBAL BOOLEAN Channel_Join( CLIENT *Client, CHAR *Name )
136 assert( Client != NULL );
137 assert( Name != NULL );
139 /* Valider Channel-Name? */
140 if( ! Channel_IsValidName( Name ))
142 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
147 chan = Channel_Search( Name );
150 /* Ist der Client bereits Mitglied? */
151 if( Get_Cl2Chan( chan, Client )) return FALSE;
155 /* Gibt es noch nicht? Dann neu anlegen: */
156 chan = New_Chan( Name );
157 if( ! chan ) return FALSE;
160 chan->next = My_Channels;
164 /* User dem Channel hinzufuegen */
165 if( ! Add_Client( chan, Client )) return FALSE;
170 GLOBAL BOOLEAN Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
174 assert( Client != NULL );
175 assert( Name != NULL );
178 chan = Channel_Search( Name );
179 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
181 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
185 /* User aus Channel entfernen */
186 if( ! Remove_Client( chan, Client, Origin, Reason, TRUE )) return FALSE;
191 GLOBAL VOID Channel_RemoveClient( CLIENT *Client, CHAR *Reason )
195 assert( Client != NULL );
201 Remove_Client( c, Client, Client_ThisServer( ), Reason, FALSE );
204 } /* Channel_RemoveClient */
207 GLOBAL INT Channel_Count( VOID )
220 } /* Channel_Count */
223 GLOBAL CHAR *Channel_Name( CHANNEL *Chan )
225 assert( Chan != NULL );
230 GLOBAL CHAR *Channel_Modes( CHANNEL *Chan )
232 assert( Chan != NULL );
234 } /* Channel_Modes */
237 GLOBAL CHANNEL *Channel_First( VOID )
240 } /* Channel_First */
243 GLOBAL CHANNEL *Channel_Next( CHANNEL *Chan )
245 assert( Chan != NULL );
250 GLOBAL CHANNEL *Channel_Search( CHAR *Name )
252 /* Channel-Struktur suchen */
256 assert( Name != NULL );
260 if( strcasecmp( Name, c->name ) == 0 ) return c;
264 } /* Channel_Search */
267 GLOBAL CL2CHAN *Channel_FirstMember( CHANNEL *Chan )
269 assert( Chan != NULL );
270 return Get_First_Cl2Chan( NULL, Chan );
271 } /* Channel_FirstMember */
274 GLOBAL CL2CHAN *Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
276 assert( Chan != NULL );
277 assert( Cl2Chan != NULL );
278 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
279 } /* Channel_NextMember */
282 GLOBAL CL2CHAN *Channel_FirstChannelOf( CLIENT *Client )
284 assert( Client != NULL );
285 return Get_First_Cl2Chan( Client, NULL );
286 } /* Channel_FirstChannelOf */
289 GLOBAL CL2CHAN *Channel_NextChannelOf( CLIENT *Client, CL2CHAN *Cl2Chan )
291 assert( Client != NULL );
292 assert( Cl2Chan != NULL );
293 return Get_Next_Cl2Chan( Cl2Chan->next, Client, NULL );
294 } /* Channel_NextChannelOf */
297 GLOBAL CLIENT *Channel_GetClient( CL2CHAN *Cl2Chan )
299 assert( Cl2Chan != NULL );
300 return Cl2Chan->client;
301 } /* Channel_GetClient */
304 GLOBAL CHANNEL *Channel_GetChannel( CL2CHAN *Cl2Chan )
306 assert( Cl2Chan != NULL );
307 return Cl2Chan->channel;
308 } /* Channel_GetChannel */
311 GLOBAL BOOLEAN Channel_IsValidName( CHAR *Name )
313 /* Pr
\9ffen, ob Name als Channelname gueltig */
315 assert( Name != NULL );
317 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN )) return FALSE;
319 } /* Channel_IsValidName */
322 GLOBAL BOOLEAN Channel_ModeAdd( CHANNEL *Chan, CHAR Mode )
324 /* Mode soll gesetzt werden. TRUE wird geliefert, wenn der
325 * Mode neu gesetzt wurde, FALSE, wenn der Channel den Mode
330 assert( Chan != NULL );
332 x[0] = Mode; x[1] = '\0';
333 if( ! strchr( Chan->modes, x[0] ))
335 /* Client hat den Mode noch nicht -> setzen */
336 strcat( Chan->modes, x );
340 } /* Channel_ModeAdd */
343 GLOBAL BOOLEAN Channel_ModeDel( CHANNEL *Chan, CHAR Mode )
345 /* Mode soll geloescht werden. TRUE wird geliefert, wenn der
346 * Mode entfernt wurde, FALSE, wenn der Channel den Mode
347 * ueberhaupt nicht hatte. */
351 assert( Chan != NULL );
353 x[0] = Mode; x[1] = '\0';
355 p = strchr( Chan->modes, x[0] );
356 if( ! p ) return FALSE;
358 /* Client hat den Mode -> loeschen */
365 } /* Channel_ModeDel */
368 GLOBAL BOOLEAN Channel_UserModeAdd( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
370 /* Channel-User-Mode soll gesetzt werden. TRUE wird geliefert,
371 * wenn der Mode neu gesetzt wurde, FALSE, wenn der User den
372 * Channel-Mode bereits hatte. */
377 assert( Chan != NULL );
378 assert( Client != NULL );
380 cl2chan = Get_Cl2Chan( Chan, Client );
381 assert( cl2chan != NULL );
383 x[0] = Mode; x[1] = '\0';
384 if( ! strchr( cl2chan->modes, x[0] ))
386 /* Client hat den Mode noch nicht -> setzen */
387 strcat( cl2chan->modes, x );
391 } /* Channel_UserModeAdd */
394 GLOBAL BOOLEAN Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
396 /* Channel-User-Mode soll geloescht werden. TRUE wird geliefert,
397 * wenn der Mode entfernt wurde, FALSE, wenn der User den Channel-Mode
398 * ueberhaupt nicht hatte. */
403 assert( Chan != NULL );
404 assert( Client != NULL );
406 cl2chan = Get_Cl2Chan( Chan, Client );
407 assert( cl2chan != NULL );
409 x[0] = Mode; x[1] = '\0';
411 p = strchr( cl2chan->modes, x[0] );
412 if( ! p ) return FALSE;
414 /* Client hat den Mode -> loeschen */
421 } /* Channel_UserModeDel */
424 GLOBAL CHAR *Channel_UserModes( CHANNEL *Chan, CLIENT *Client )
426 /* Channel-Modes eines Users liefern */
430 assert( Chan != NULL );
431 assert( Client != NULL );
433 cl2chan = Get_Cl2Chan( Chan, Client );
434 assert( cl2chan != NULL );
436 return cl2chan->modes;
437 } /* Channel_UserModes */
440 GLOBAL BOOLEAN Channel_IsMemberOf( CHANNEL *Chan, CLIENT *Client )
442 /* Pruefen, ob Client Mitglied in Channel ist */
444 assert( Chan != NULL );
445 assert( Client != NULL );
447 if( Get_Cl2Chan( Chan, Client )) return TRUE;
449 } /* Channel_IsMemberOf */
452 LOCAL CHANNEL *New_Chan( CHAR *Name )
454 /* Neue Channel-Struktur anlegen */
458 assert( Name != NULL );
460 c = malloc( sizeof( CHANNEL ));
463 Log( LOG_EMERG, "Can't allocate memory!" );
467 strncpy( c->name, Name, CHANNEL_NAME_LEN );
468 c->name[CHANNEL_NAME_LEN - 1] = '\0';
469 strcpy( c->modes, "" );
471 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
477 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
481 assert( Chan != NULL );
482 assert( Client != NULL );
484 cl2chan = My_Cl2Chan;
487 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
488 cl2chan = cl2chan->next;
494 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client )
498 assert( Chan != NULL );
499 assert( Client != NULL );
501 /* neue CL2CHAN-Struktur anlegen */
502 cl2chan = malloc( sizeof( CL2CHAN ));
505 Log( LOG_EMERG, "Can't allocate memory!" );
508 cl2chan->channel = Chan;
509 cl2chan->client = Client;
510 strcpy( cl2chan->modes, "" );
513 cl2chan->next = My_Cl2Chan;
514 My_Cl2Chan = cl2chan;
516 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
522 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART )
524 CL2CHAN *cl2chan, *last_cl2chan;
527 assert( Chan != NULL );
528 assert( Client != NULL );
529 assert( Origin != NULL );
530 assert( Reason != NULL );
533 cl2chan = My_Cl2Chan;
536 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
537 last_cl2chan = cl2chan;
538 cl2chan = cl2chan->next;
540 if( ! cl2chan ) return FALSE;
542 c = cl2chan->channel;
545 /* Aus Verkettung loesen und freigeben */
546 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
547 else My_Cl2Chan = cl2chan->next;
550 if( ServerPART ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
551 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
552 if(( Client_Conn( Origin ) > NONE ) && ( Client_Type( Origin ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
554 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
556 /* Wenn Channel nun leer: loeschen */
557 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
560 } /* Remove_Client */
563 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
565 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
566 } /* Get_First_Cl2Chan */
569 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
573 assert( Client != NULL || Channel != NULL );
578 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
579 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
580 cl2chan = cl2chan->next;
583 } /* Get_Next_Cl2Chan */
586 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan )
588 /* Channel-Struktur loeschen */
590 CHANNEL *chan, *last_chan;
596 if( chan == Chan ) break;
600 if( ! chan ) return FALSE;
602 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
604 /* Neu verketten und freigeben */
605 if( last_chan ) last_chan->next = chan->next;
606 else My_Channels = chan->next;
610 } /* Delete_Channel */