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 1.13 2002/02/11 01:00:12 alex Exp $
14 * channel.c: Management der Channels
17 * Revision 1.13 2002/02/11 01:00:12 alex
18 * - neue Funktionen Channel_ModeAdd(), Channel_ModeDel(), Channel_UserModes(),
19 * Channel_UserModeAdd(), Channel_UserModeDel().
20 * - Modes in CL2CHAN-Struktur werden nun korrekt initialisiert.
22 * Revision 1.12 2002/02/06 16:48:48 alex
23 * - neue Funktion Channel_Modes() und Channel_IsValidName().
24 * - Channel-Namen werden (besser) validiert.
26 * Revision 1.11 2002/01/29 00:11:10 alex
27 * - neue Funktionen Channel_FirstChannelOf() und Channel_NextChannelOf().
29 * Revision 1.10 2002/01/28 01:16:15 alex
30 * - neue Funktionen Channel_Name(), Channel_First() und Channel_Next().
32 * Revision 1.9 2002/01/27 22:47:11 alex
33 * - PART wird nicht mehr an den Server verschickt, von dem es empfangen wurde.
35 * Revision 1.8 2002/01/27 21:56:54 alex
36 * - weitere Anpassungen an Chennals, v.a. ueber Server-Links.
38 * Revision 1.7 2002/01/27 17:14:33 alex
39 * - diverse Aenderungen fuer Channels ueber mehrere Server.
41 * Revision 1.6 2002/01/26 18:41:55 alex
42 * - CHANNEL- und CL2CHAN-Strukturen in Header verlegt,
43 * - einige neue Funktionen (Channel_GetChannel(), Channel_FirstMember(), ...)
45 * Revision 1.5 2002/01/21 00:12:29 alex
46 * - begonnen, Channels zu implementieren :-)
48 * Revision 1.4 2002/01/16 22:09:07 alex
49 * - neue Funktion Channel_Count().
51 * Revision 1.3 2002/01/02 02:42:58 alex
52 * - Copyright-Texte aktualisiert.
54 * Revision 1.2 2001/12/31 02:18:51 alex
55 * - viele neue Befehle (WHOIS, ISON, OPER, DIE, RESTART),
56 * - neuen Header "defines.h" mit (fast) allen Konstanten.
57 * - Code Cleanups und viele "kleine" Aenderungen & Bugfixes.
59 * Revision 1.1 2001/12/14 08:13:43 alex
60 * - neues Modul begonnen :-)
84 LOCAL CHANNEL *My_Channels;
85 LOCAL CL2CHAN *My_Cl2Chan;
88 LOCAL CHANNEL *New_Chan( CHAR *Name );
89 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client );
90 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client );
91 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART );
92 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan );
93 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan );
94 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan );
97 GLOBAL VOID Channel_Init( VOID )
104 GLOBAL VOID Channel_Exit( VOID )
107 CL2CHAN *cl2chan, *cl2chan_next;
109 /* Channel-Strukturen freigeben */
118 /* Channel-Zuordnungstabelle freigeben */
119 cl2chan = My_Cl2Chan;
122 cl2chan_next = cl2chan->next;
124 cl2chan = cl2chan_next;
129 GLOBAL BOOLEAN Channel_Join( CLIENT *Client, CHAR *Name )
133 assert( Client != NULL );
134 assert( Name != NULL );
136 /* Valider Channel-Name? */
137 if( ! Channel_IsValidName( Name ))
139 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
144 chan = Channel_Search( Name );
147 /* Ist der Client bereits Mitglied? */
148 if( Get_Cl2Chan( chan, Client )) return FALSE;
152 /* Gibt es noch nicht? Dann neu anlegen: */
153 chan = New_Chan( Name );
154 if( ! chan ) return FALSE;
157 chan->next = My_Channels;
161 /* User dem Channel hinzufuegen */
162 if( ! Add_Client( chan, Client )) return FALSE;
167 GLOBAL BOOLEAN Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
171 assert( Client != NULL );
172 assert( Name != NULL );
175 chan = Channel_Search( Name );
176 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
178 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
182 /* User aus Channel entfernen */
183 if( ! Remove_Client( chan, Client, Origin, Reason, TRUE )) return FALSE;
188 GLOBAL VOID Channel_RemoveClient( CLIENT *Client, CHAR *Reason )
192 assert( Client != NULL );
198 Remove_Client( c, Client, Client_ThisServer( ), Reason, FALSE );
201 } /* Channel_RemoveClient */
204 GLOBAL INT Channel_Count( VOID )
217 } /* Channel_Count */
220 GLOBAL CHAR *Channel_Name( CHANNEL *Chan )
222 assert( Chan != NULL );
227 GLOBAL CHAR *Channel_Modes( CHANNEL *Chan )
229 assert( Chan != NULL );
231 } /* Channel_Modes */
234 GLOBAL CHANNEL *Channel_First( VOID )
237 } /* Channel_First */
240 GLOBAL CHANNEL *Channel_Next( CHANNEL *Chan )
242 assert( Chan != NULL );
247 GLOBAL CHANNEL *Channel_Search( CHAR *Name )
249 /* Channel-Struktur suchen */
253 assert( Name != NULL );
257 if( strcasecmp( Name, c->name ) == 0 ) return c;
261 } /* Channel_Search */
264 GLOBAL CL2CHAN *Channel_FirstMember( CHANNEL *Chan )
266 assert( Chan != NULL );
267 return Get_First_Cl2Chan( NULL, Chan );
268 } /* Channel_FirstMember */
271 GLOBAL CL2CHAN *Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
273 assert( Chan != NULL );
274 assert( Cl2Chan != NULL );
275 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
276 } /* Channel_NextMember */
279 GLOBAL CL2CHAN *Channel_FirstChannelOf( CLIENT *Client )
281 assert( Client != NULL );
282 return Get_First_Cl2Chan( Client, NULL );
283 } /* Channel_FirstChannelOf */
286 GLOBAL CL2CHAN *Channel_NextChannelOf( CLIENT *Client, CL2CHAN *Cl2Chan )
288 assert( Client != NULL );
289 assert( Cl2Chan != NULL );
290 return Get_Next_Cl2Chan( Cl2Chan->next, Client, NULL );
291 } /* Channel_NextChannelOf */
294 GLOBAL CLIENT *Channel_GetClient( CL2CHAN *Cl2Chan )
296 assert( Cl2Chan != NULL );
297 return Cl2Chan->client;
298 } /* Channel_GetClient */
301 GLOBAL CHANNEL *Channel_GetChannel( CL2CHAN *Cl2Chan )
303 assert( Cl2Chan != NULL );
304 return Cl2Chan->channel;
305 } /* Channel_GetChannel */
308 GLOBAL BOOLEAN Channel_IsValidName( CHAR *Name )
310 /* Pr
\9ffen, ob Name als Channelname gueltig */
312 assert( Name != NULL );
314 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN )) return FALSE;
316 } /* Channel_IsValidName */
319 GLOBAL BOOLEAN Channel_ModeAdd( CHANNEL *Chan, CHAR Mode )
321 /* Mode soll gesetzt werden. TRUE wird geliefert, wenn der
322 * Mode neu gesetzt wurde, FALSE, wenn der Channel den Mode
327 assert( Chan != NULL );
329 x[0] = Mode; x[1] = '\0';
330 if( ! strchr( Chan->modes, x[0] ))
332 /* Client hat den Mode noch nicht -> setzen */
333 strcat( Chan->modes, x );
337 } /* Channel_ModeAdd */
340 GLOBAL BOOLEAN Channel_ModeDel( CHANNEL *Chan, CHAR Mode )
342 /* Mode soll geloescht werden. TRUE wird geliefert, wenn der
343 * Mode entfernt wurde, FALSE, wenn der Channel den Mode
344 * ueberhaupt nicht hatte. */
348 assert( Chan != NULL );
350 x[0] = Mode; x[1] = '\0';
352 p = strchr( Chan->modes, x[0] );
353 if( ! p ) return FALSE;
355 /* Client hat den Mode -> loeschen */
362 } /* Channel_ModeDel */
365 GLOBAL BOOLEAN Channel_UserModeAdd( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
367 /* Channel-User-Mode soll gesetzt werden. TRUE wird geliefert,
368 * wenn der Mode neu gesetzt wurde, FALSE, wenn der User den
369 * Channel-Mode bereits hatte. */
374 assert( Chan != NULL );
375 assert( Client != NULL );
377 cl2chan = Get_Cl2Chan( Chan, Client );
378 assert( cl2chan != NULL );
380 x[0] = Mode; x[1] = '\0';
381 if( ! strchr( cl2chan->modes, x[0] ))
383 /* Client hat den Mode noch nicht -> setzen */
384 strcat( cl2chan->modes, x );
388 } /* Channel_UserModeAdd */
391 GLOBAL BOOLEAN Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
393 /* Channel-User-Mode soll geloescht werden. TRUE wird geliefert,
394 * wenn der Mode entfernt wurde, FALSE, wenn der User den Channel-Mode
395 * ueberhaupt nicht hatte. */
400 assert( Chan != NULL );
401 assert( Client != NULL );
403 cl2chan = Get_Cl2Chan( Chan, Client );
404 assert( cl2chan != NULL );
406 x[0] = Mode; x[1] = '\0';
408 p = strchr( cl2chan->modes, x[0] );
409 if( ! p ) return FALSE;
411 /* Client hat den Mode -> loeschen */
418 } /* Channel_UserModeDel */
421 GLOBAL CHAR *Channel_UserModes( CHANNEL *Chan, CLIENT *Client )
423 /* Channel-Modes eines Users liefern */
427 assert( Chan != NULL );
428 assert( Client != NULL );
430 cl2chan = Get_Cl2Chan( Chan, Client );
431 assert( cl2chan != NULL );
433 return cl2chan->modes;
434 } /* Channel_UserModes */
437 LOCAL CHANNEL *New_Chan( CHAR *Name )
439 /* Neue Channel-Struktur anlegen */
443 assert( Name != NULL );
445 c = malloc( sizeof( CHANNEL ));
448 Log( LOG_EMERG, "Can't allocate memory!" );
452 strncpy( c->name, Name, CHANNEL_NAME_LEN );
453 c->name[CHANNEL_NAME_LEN - 1] = '\0';
454 strcpy( c->modes, "" );
456 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
462 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
466 assert( Chan != NULL );
467 assert( Client != NULL );
469 cl2chan = My_Cl2Chan;
472 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
473 cl2chan = cl2chan->next;
479 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client )
483 assert( Chan != NULL );
484 assert( Client != NULL );
486 /* neue CL2CHAN-Struktur anlegen */
487 cl2chan = malloc( sizeof( CL2CHAN ));
490 Log( LOG_EMERG, "Can't allocate memory!" );
493 cl2chan->channel = Chan;
494 cl2chan->client = Client;
495 strcpy( cl2chan->modes, "" );
498 cl2chan->next = My_Cl2Chan;
499 My_Cl2Chan = cl2chan;
501 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
507 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART )
509 CL2CHAN *cl2chan, *last_cl2chan;
512 assert( Chan != NULL );
513 assert( Client != NULL );
514 assert( Origin != NULL );
515 assert( Reason != NULL );
518 cl2chan = My_Cl2Chan;
521 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
522 last_cl2chan = cl2chan;
523 cl2chan = cl2chan->next;
525 if( ! cl2chan ) return FALSE;
527 c = cl2chan->channel;
530 /* Aus Verkettung loesen und freigeben */
531 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
532 else My_Cl2Chan = cl2chan->next;
535 if( ServerPART ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
536 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
537 if(( Client_Conn( Origin ) > NONE ) && ( Client_Type( Origin ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
539 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
541 /* Wenn Channel nun leer: loeschen */
542 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
545 } /* Remove_Client */
548 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
550 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
551 } /* Get_First_Cl2Chan */
554 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
558 assert( Client != NULL || Channel != NULL );
563 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
564 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
565 cl2chan = cl2chan->next;
568 } /* Get_Next_Cl2Chan */
571 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan )
573 /* Channel-Struktur loeschen */
575 CHANNEL *chan, *last_chan;
581 if( chan == Chan ) break;
585 if( ! chan ) return FALSE;
587 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
589 /* Neu verketten und freigeben */
590 if( last_chan ) last_chan->next = chan->next;
591 else My_Channels = chan->next;
595 } /* Delete_Channel */