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 1.17 2002/03/02 01:35:50 alex Exp $
14 * channel.c: Management der Channels
17 * Revision 1.17 2002/03/02 01:35:50 alex
18 * - Channel- und Nicknames werden nun ordentlich validiert.
20 * Revision 1.16 2002/02/27 23:23:53 alex
21 * - Includes fuer einige Header bereinigt.
23 * Revision 1.15 2002/02/27 20:32:10 alex
24 * - neue Funktionen Channel_Topic() und Channel_SetTopic().
26 * Revision 1.14 2002/02/27 15:21:21 alex
27 * - neue Funktion Channel_IsMemberOf() implementiert.
29 * Revision 1.13 2002/02/11 01:00:12 alex
30 * - neue Funktionen Channel_ModeAdd(), Channel_ModeDel(), Channel_UserModes(),
31 * Channel_UserModeAdd(), Channel_UserModeDel().
32 * - Modes in CL2CHAN-Struktur werden nun korrekt initialisiert.
34 * Revision 1.12 2002/02/06 16:48:48 alex
35 * - neue Funktion Channel_Modes() und Channel_IsValidName().
36 * - Channel-Namen werden (besser) validiert.
38 * Revision 1.11 2002/01/29 00:11:10 alex
39 * - neue Funktionen Channel_FirstChannelOf() und Channel_NextChannelOf().
41 * Revision 1.10 2002/01/28 01:16:15 alex
42 * - neue Funktionen Channel_Name(), Channel_First() und Channel_Next().
44 * Revision 1.9 2002/01/27 22:47:11 alex
45 * - PART wird nicht mehr an den Server verschickt, von dem es empfangen wurde.
47 * Revision 1.8 2002/01/27 21:56:54 alex
48 * - weitere Anpassungen an Chennals, v.a. ueber Server-Links.
50 * Revision 1.7 2002/01/27 17:14:33 alex
51 * - diverse Aenderungen fuer Channels ueber mehrere Server.
53 * Revision 1.6 2002/01/26 18:41:55 alex
54 * - CHANNEL- und CL2CHAN-Strukturen in Header verlegt,
55 * - einige neue Funktionen (Channel_GetChannel(), Channel_FirstMember(), ...)
57 * Revision 1.5 2002/01/21 00:12:29 alex
58 * - begonnen, Channels zu implementieren :-)
60 * Revision 1.4 2002/01/16 22:09:07 alex
61 * - neue Funktion Channel_Count().
63 * Revision 1.3 2002/01/02 02:42:58 alex
64 * - Copyright-Texte aktualisiert.
66 * Revision 1.2 2001/12/31 02:18:51 alex
67 * - viele neue Befehle (WHOIS, ISON, OPER, DIE, RESTART),
68 * - neuen Header "defines.h" mit (fast) allen Konstanten.
69 * - Code Cleanups und viele "kleine" Aenderungen & Bugfixes.
71 * Revision 1.1 2001/12/14 08:13:43 alex
72 * - neues Modul begonnen :-)
88 #include "irc-write.h"
96 LOCAL CHANNEL *My_Channels;
97 LOCAL CL2CHAN *My_Cl2Chan;
100 LOCAL CHANNEL *New_Chan( CHAR *Name );
101 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client );
102 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client );
103 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART );
104 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan );
105 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan );
106 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan );
109 GLOBAL VOID Channel_Init( VOID )
116 GLOBAL VOID Channel_Exit( VOID )
119 CL2CHAN *cl2chan, *cl2chan_next;
121 /* Channel-Strukturen freigeben */
130 /* Channel-Zuordnungstabelle freigeben */
131 cl2chan = My_Cl2Chan;
134 cl2chan_next = cl2chan->next;
136 cl2chan = cl2chan_next;
141 GLOBAL BOOLEAN Channel_Join( CLIENT *Client, CHAR *Name )
145 assert( Client != NULL );
146 assert( Name != NULL );
148 /* Valider Channel-Name? */
149 if( ! Channel_IsValidName( Name ))
151 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
156 chan = Channel_Search( Name );
159 /* Ist der Client bereits Mitglied? */
160 if( Get_Cl2Chan( chan, Client )) return FALSE;
164 /* Gibt es noch nicht? Dann neu anlegen: */
165 chan = New_Chan( Name );
166 if( ! chan ) return FALSE;
169 chan->next = My_Channels;
173 /* User dem Channel hinzufuegen */
174 if( ! Add_Client( chan, Client )) return FALSE;
179 GLOBAL BOOLEAN Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
183 assert( Client != NULL );
184 assert( Name != NULL );
187 chan = Channel_Search( Name );
188 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
190 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
194 /* User aus Channel entfernen */
195 if( ! Remove_Client( chan, Client, Origin, Reason, TRUE )) return FALSE;
200 GLOBAL VOID Channel_RemoveClient( CLIENT *Client, CHAR *Reason )
204 assert( Client != NULL );
210 Remove_Client( c, Client, Client_ThisServer( ), Reason, FALSE );
213 } /* Channel_RemoveClient */
216 GLOBAL INT Channel_Count( VOID )
229 } /* Channel_Count */
232 GLOBAL CHAR *Channel_Name( CHANNEL *Chan )
234 assert( Chan != NULL );
239 GLOBAL CHAR *Channel_Modes( CHANNEL *Chan )
241 assert( Chan != NULL );
243 } /* Channel_Modes */
246 GLOBAL CHANNEL *Channel_First( VOID )
249 } /* Channel_First */
252 GLOBAL CHANNEL *Channel_Next( CHANNEL *Chan )
254 assert( Chan != NULL );
259 GLOBAL CHANNEL *Channel_Search( CHAR *Name )
261 /* Channel-Struktur suchen */
265 assert( Name != NULL );
269 if( strcasecmp( Name, c->name ) == 0 ) return c;
273 } /* Channel_Search */
276 GLOBAL CL2CHAN *Channel_FirstMember( CHANNEL *Chan )
278 assert( Chan != NULL );
279 return Get_First_Cl2Chan( NULL, Chan );
280 } /* Channel_FirstMember */
283 GLOBAL CL2CHAN *Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
285 assert( Chan != NULL );
286 assert( Cl2Chan != NULL );
287 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
288 } /* Channel_NextMember */
291 GLOBAL CL2CHAN *Channel_FirstChannelOf( CLIENT *Client )
293 assert( Client != NULL );
294 return Get_First_Cl2Chan( Client, NULL );
295 } /* Channel_FirstChannelOf */
298 GLOBAL CL2CHAN *Channel_NextChannelOf( CLIENT *Client, CL2CHAN *Cl2Chan )
300 assert( Client != NULL );
301 assert( Cl2Chan != NULL );
302 return Get_Next_Cl2Chan( Cl2Chan->next, Client, NULL );
303 } /* Channel_NextChannelOf */
306 GLOBAL CLIENT *Channel_GetClient( CL2CHAN *Cl2Chan )
308 assert( Cl2Chan != NULL );
309 return Cl2Chan->client;
310 } /* Channel_GetClient */
313 GLOBAL CHANNEL *Channel_GetChannel( CL2CHAN *Cl2Chan )
315 assert( Cl2Chan != NULL );
316 return Cl2Chan->channel;
317 } /* Channel_GetChannel */
320 GLOBAL BOOLEAN Channel_IsValidName( CHAR *Name )
322 /* Pr
\9ffen, ob Name als Channelname gueltig */
324 CHAR *ptr, badchars[] = " ,:\x07";
326 assert( Name != NULL );
328 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN )) return FALSE;
333 if( strchr( badchars, *ptr )) return FALSE;
338 } /* Channel_IsValidName */
341 GLOBAL BOOLEAN Channel_ModeAdd( CHANNEL *Chan, CHAR Mode )
343 /* Mode soll gesetzt werden. TRUE wird geliefert, wenn der
344 * Mode neu gesetzt wurde, FALSE, wenn der Channel den Mode
349 assert( Chan != NULL );
351 x[0] = Mode; x[1] = '\0';
352 if( ! strchr( Chan->modes, x[0] ))
354 /* Client hat den Mode noch nicht -> setzen */
355 strcat( Chan->modes, x );
359 } /* Channel_ModeAdd */
362 GLOBAL BOOLEAN Channel_ModeDel( CHANNEL *Chan, CHAR Mode )
364 /* Mode soll geloescht werden. TRUE wird geliefert, wenn der
365 * Mode entfernt wurde, FALSE, wenn der Channel den Mode
366 * ueberhaupt nicht hatte. */
370 assert( Chan != NULL );
372 x[0] = Mode; x[1] = '\0';
374 p = strchr( Chan->modes, x[0] );
375 if( ! p ) return FALSE;
377 /* Client hat den Mode -> loeschen */
384 } /* Channel_ModeDel */
387 GLOBAL BOOLEAN Channel_UserModeAdd( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
389 /* Channel-User-Mode soll gesetzt werden. TRUE wird geliefert,
390 * wenn der Mode neu gesetzt wurde, FALSE, wenn der User den
391 * Channel-Mode bereits hatte. */
396 assert( Chan != NULL );
397 assert( Client != NULL );
399 cl2chan = Get_Cl2Chan( Chan, Client );
400 assert( cl2chan != NULL );
402 x[0] = Mode; x[1] = '\0';
403 if( ! strchr( cl2chan->modes, x[0] ))
405 /* Client hat den Mode noch nicht -> setzen */
406 strcat( cl2chan->modes, x );
410 } /* Channel_UserModeAdd */
413 GLOBAL BOOLEAN Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
415 /* Channel-User-Mode soll geloescht werden. TRUE wird geliefert,
416 * wenn der Mode entfernt wurde, FALSE, wenn der User den Channel-Mode
417 * ueberhaupt nicht hatte. */
422 assert( Chan != NULL );
423 assert( Client != NULL );
425 cl2chan = Get_Cl2Chan( Chan, Client );
426 assert( cl2chan != NULL );
428 x[0] = Mode; x[1] = '\0';
430 p = strchr( cl2chan->modes, x[0] );
431 if( ! p ) return FALSE;
433 /* Client hat den Mode -> loeschen */
440 } /* Channel_UserModeDel */
443 GLOBAL CHAR *Channel_UserModes( CHANNEL *Chan, CLIENT *Client )
445 /* Channel-Modes eines Users liefern */
449 assert( Chan != NULL );
450 assert( Client != NULL );
452 cl2chan = Get_Cl2Chan( Chan, Client );
453 assert( cl2chan != NULL );
455 return cl2chan->modes;
456 } /* Channel_UserModes */
459 GLOBAL BOOLEAN Channel_IsMemberOf( CHANNEL *Chan, CLIENT *Client )
461 /* Pruefen, ob Client Mitglied in Channel ist */
463 assert( Chan != NULL );
464 assert( Client != NULL );
466 if( Get_Cl2Chan( Chan, Client )) return TRUE;
468 } /* Channel_IsMemberOf */
471 GLOBAL CHAR *Channel_Topic( CHANNEL *Chan )
473 assert( Chan != NULL );
475 } /* Channel_Topic */
478 GLOBAL VOID Channel_SetTopic( CHANNEL *Chan, CHAR *Topic )
480 assert( Chan != NULL );
481 assert( Topic != NULL );
483 strncpy( Chan->topic, Topic, CHANNEL_TOPIC_LEN );
484 Chan->topic[CHANNEL_TOPIC_LEN - 1] = '\0';
485 } /* Channel_SetTopic */
488 LOCAL CHANNEL *New_Chan( CHAR *Name )
490 /* Neue Channel-Struktur anlegen */
494 assert( Name != NULL );
496 c = malloc( sizeof( CHANNEL ));
499 Log( LOG_EMERG, "Can't allocate memory!" );
503 strncpy( c->name, Name, CHANNEL_NAME_LEN );
504 c->name[CHANNEL_NAME_LEN - 1] = '\0';
505 strcpy( c->modes, "" );
506 strcpy( c->topic, "" );
508 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
514 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
518 assert( Chan != NULL );
519 assert( Client != NULL );
521 cl2chan = My_Cl2Chan;
524 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
525 cl2chan = cl2chan->next;
531 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client )
535 assert( Chan != NULL );
536 assert( Client != NULL );
538 /* neue CL2CHAN-Struktur anlegen */
539 cl2chan = malloc( sizeof( CL2CHAN ));
542 Log( LOG_EMERG, "Can't allocate memory!" );
545 cl2chan->channel = Chan;
546 cl2chan->client = Client;
547 strcpy( cl2chan->modes, "" );
550 cl2chan->next = My_Cl2Chan;
551 My_Cl2Chan = cl2chan;
553 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
559 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART )
561 CL2CHAN *cl2chan, *last_cl2chan;
564 assert( Chan != NULL );
565 assert( Client != NULL );
566 assert( Origin != NULL );
567 assert( Reason != NULL );
570 cl2chan = My_Cl2Chan;
573 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
574 last_cl2chan = cl2chan;
575 cl2chan = cl2chan->next;
577 if( ! cl2chan ) return FALSE;
579 c = cl2chan->channel;
582 /* Aus Verkettung loesen und freigeben */
583 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
584 else My_Cl2Chan = cl2chan->next;
587 if( ServerPART ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
588 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
589 if(( Client_Conn( Origin ) > NONE ) && ( Client_Type( Origin ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
591 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
593 /* Wenn Channel nun leer: loeschen */
594 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
597 } /* Remove_Client */
600 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
602 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
603 } /* Get_First_Cl2Chan */
606 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
610 assert( Client != NULL || Channel != NULL );
615 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
616 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
617 cl2chan = cl2chan->next;
620 } /* Get_Next_Cl2Chan */
623 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan )
625 /* Channel-Struktur loeschen */
627 CHANNEL *chan, *last_chan;
633 if( chan == Chan ) break;
637 if( ! chan ) return FALSE;
639 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
641 /* Neu verketten und freigeben */
642 if( last_chan ) last_chan->next = chan->next;
643 else My_Channels = chan->next;
647 } /* Delete_Channel */