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 1.18 2002/03/03 17:17:01 alex Exp $
14 * channel.c: Management der Channels
17 * Revision 1.18 2002/03/03 17:17:01 alex
18 * - strncpy() und vsnprintf() kopieren nun etwas "optimierter" (1 Byte weniger) :-)
20 * Revision 1.17 2002/03/02 01:35:50 alex
21 * - Channel- und Nicknames werden nun ordentlich validiert.
23 * Revision 1.16 2002/02/27 23:23:53 alex
24 * - Includes fuer einige Header bereinigt.
26 * Revision 1.15 2002/02/27 20:32:10 alex
27 * - neue Funktionen Channel_Topic() und Channel_SetTopic().
29 * Revision 1.14 2002/02/27 15:21:21 alex
30 * - neue Funktion Channel_IsMemberOf() implementiert.
32 * Revision 1.13 2002/02/11 01:00:12 alex
33 * - neue Funktionen Channel_ModeAdd(), Channel_ModeDel(), Channel_UserModes(),
34 * Channel_UserModeAdd(), Channel_UserModeDel().
35 * - Modes in CL2CHAN-Struktur werden nun korrekt initialisiert.
37 * Revision 1.12 2002/02/06 16:48:48 alex
38 * - neue Funktion Channel_Modes() und Channel_IsValidName().
39 * - Channel-Namen werden (besser) validiert.
41 * Revision 1.11 2002/01/29 00:11:10 alex
42 * - neue Funktionen Channel_FirstChannelOf() und Channel_NextChannelOf().
44 * Revision 1.10 2002/01/28 01:16:15 alex
45 * - neue Funktionen Channel_Name(), Channel_First() und Channel_Next().
47 * Revision 1.9 2002/01/27 22:47:11 alex
48 * - PART wird nicht mehr an den Server verschickt, von dem es empfangen wurde.
50 * Revision 1.8 2002/01/27 21:56:54 alex
51 * - weitere Anpassungen an Chennals, v.a. ueber Server-Links.
53 * Revision 1.7 2002/01/27 17:14:33 alex
54 * - diverse Aenderungen fuer Channels ueber mehrere Server.
56 * Revision 1.6 2002/01/26 18:41:55 alex
57 * - CHANNEL- und CL2CHAN-Strukturen in Header verlegt,
58 * - einige neue Funktionen (Channel_GetChannel(), Channel_FirstMember(), ...)
60 * Revision 1.5 2002/01/21 00:12:29 alex
61 * - begonnen, Channels zu implementieren :-)
63 * Revision 1.4 2002/01/16 22:09:07 alex
64 * - neue Funktion Channel_Count().
66 * Revision 1.3 2002/01/02 02:42:58 alex
67 * - Copyright-Texte aktualisiert.
69 * Revision 1.2 2001/12/31 02:18:51 alex
70 * - viele neue Befehle (WHOIS, ISON, OPER, DIE, RESTART),
71 * - neuen Header "defines.h" mit (fast) allen Konstanten.
72 * - Code Cleanups und viele "kleine" Aenderungen & Bugfixes.
74 * Revision 1.1 2001/12/14 08:13:43 alex
75 * - neues Modul begonnen :-)
91 #include "irc-write.h"
99 LOCAL CHANNEL *My_Channels;
100 LOCAL CL2CHAN *My_Cl2Chan;
103 LOCAL CHANNEL *New_Chan( CHAR *Name );
104 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client );
105 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client );
106 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART );
107 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan );
108 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan );
109 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan );
112 GLOBAL VOID Channel_Init( VOID )
119 GLOBAL VOID Channel_Exit( VOID )
122 CL2CHAN *cl2chan, *cl2chan_next;
124 /* Channel-Strukturen freigeben */
133 /* Channel-Zuordnungstabelle freigeben */
134 cl2chan = My_Cl2Chan;
137 cl2chan_next = cl2chan->next;
139 cl2chan = cl2chan_next;
144 GLOBAL BOOLEAN Channel_Join( CLIENT *Client, CHAR *Name )
148 assert( Client != NULL );
149 assert( Name != NULL );
151 /* Valider Channel-Name? */
152 if( ! Channel_IsValidName( Name ))
154 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
159 chan = Channel_Search( Name );
162 /* Ist der Client bereits Mitglied? */
163 if( Get_Cl2Chan( chan, Client )) return FALSE;
167 /* Gibt es noch nicht? Dann neu anlegen: */
168 chan = New_Chan( Name );
169 if( ! chan ) return FALSE;
172 chan->next = My_Channels;
176 /* User dem Channel hinzufuegen */
177 if( ! Add_Client( chan, Client )) return FALSE;
182 GLOBAL BOOLEAN Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
186 assert( Client != NULL );
187 assert( Name != NULL );
190 chan = Channel_Search( Name );
191 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
193 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
197 /* User aus Channel entfernen */
198 if( ! Remove_Client( chan, Client, Origin, Reason, TRUE )) return FALSE;
203 GLOBAL VOID Channel_RemoveClient( CLIENT *Client, CHAR *Reason )
207 assert( Client != NULL );
213 Remove_Client( c, Client, Client_ThisServer( ), Reason, FALSE );
216 } /* Channel_RemoveClient */
219 GLOBAL INT Channel_Count( VOID )
232 } /* Channel_Count */
235 GLOBAL CHAR *Channel_Name( CHANNEL *Chan )
237 assert( Chan != NULL );
242 GLOBAL CHAR *Channel_Modes( CHANNEL *Chan )
244 assert( Chan != NULL );
246 } /* Channel_Modes */
249 GLOBAL CHANNEL *Channel_First( VOID )
252 } /* Channel_First */
255 GLOBAL CHANNEL *Channel_Next( CHANNEL *Chan )
257 assert( Chan != NULL );
262 GLOBAL CHANNEL *Channel_Search( CHAR *Name )
264 /* Channel-Struktur suchen */
268 assert( Name != NULL );
272 if( strcasecmp( Name, c->name ) == 0 ) return c;
276 } /* Channel_Search */
279 GLOBAL CL2CHAN *Channel_FirstMember( CHANNEL *Chan )
281 assert( Chan != NULL );
282 return Get_First_Cl2Chan( NULL, Chan );
283 } /* Channel_FirstMember */
286 GLOBAL CL2CHAN *Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
288 assert( Chan != NULL );
289 assert( Cl2Chan != NULL );
290 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
291 } /* Channel_NextMember */
294 GLOBAL CL2CHAN *Channel_FirstChannelOf( CLIENT *Client )
296 assert( Client != NULL );
297 return Get_First_Cl2Chan( Client, NULL );
298 } /* Channel_FirstChannelOf */
301 GLOBAL CL2CHAN *Channel_NextChannelOf( CLIENT *Client, CL2CHAN *Cl2Chan )
303 assert( Client != NULL );
304 assert( Cl2Chan != NULL );
305 return Get_Next_Cl2Chan( Cl2Chan->next, Client, NULL );
306 } /* Channel_NextChannelOf */
309 GLOBAL CLIENT *Channel_GetClient( CL2CHAN *Cl2Chan )
311 assert( Cl2Chan != NULL );
312 return Cl2Chan->client;
313 } /* Channel_GetClient */
316 GLOBAL CHANNEL *Channel_GetChannel( CL2CHAN *Cl2Chan )
318 assert( Cl2Chan != NULL );
319 return Cl2Chan->channel;
320 } /* Channel_GetChannel */
323 GLOBAL BOOLEAN Channel_IsValidName( CHAR *Name )
325 /* Pr
\9ffen, ob Name als Channelname gueltig */
327 CHAR *ptr, badchars[] = " ,:\x07";
329 assert( Name != NULL );
331 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN )) return FALSE;
336 if( strchr( badchars, *ptr )) return FALSE;
341 } /* Channel_IsValidName */
344 GLOBAL BOOLEAN Channel_ModeAdd( CHANNEL *Chan, CHAR Mode )
346 /* Mode soll gesetzt werden. TRUE wird geliefert, wenn der
347 * Mode neu gesetzt wurde, FALSE, wenn der Channel den Mode
352 assert( Chan != NULL );
354 x[0] = Mode; x[1] = '\0';
355 if( ! strchr( Chan->modes, x[0] ))
357 /* Client hat den Mode noch nicht -> setzen */
358 strcat( Chan->modes, x );
362 } /* Channel_ModeAdd */
365 GLOBAL BOOLEAN Channel_ModeDel( CHANNEL *Chan, CHAR Mode )
367 /* Mode soll geloescht werden. TRUE wird geliefert, wenn der
368 * Mode entfernt wurde, FALSE, wenn der Channel den Mode
369 * ueberhaupt nicht hatte. */
373 assert( Chan != NULL );
375 x[0] = Mode; x[1] = '\0';
377 p = strchr( Chan->modes, x[0] );
378 if( ! p ) return FALSE;
380 /* Client hat den Mode -> loeschen */
387 } /* Channel_ModeDel */
390 GLOBAL BOOLEAN Channel_UserModeAdd( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
392 /* Channel-User-Mode soll gesetzt werden. TRUE wird geliefert,
393 * wenn der Mode neu gesetzt wurde, FALSE, wenn der User den
394 * Channel-Mode bereits hatte. */
399 assert( Chan != NULL );
400 assert( Client != NULL );
402 cl2chan = Get_Cl2Chan( Chan, Client );
403 assert( cl2chan != NULL );
405 x[0] = Mode; x[1] = '\0';
406 if( ! strchr( cl2chan->modes, x[0] ))
408 /* Client hat den Mode noch nicht -> setzen */
409 strcat( cl2chan->modes, x );
413 } /* Channel_UserModeAdd */
416 GLOBAL BOOLEAN Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
418 /* Channel-User-Mode soll geloescht werden. TRUE wird geliefert,
419 * wenn der Mode entfernt wurde, FALSE, wenn der User den Channel-Mode
420 * ueberhaupt nicht hatte. */
425 assert( Chan != NULL );
426 assert( Client != NULL );
428 cl2chan = Get_Cl2Chan( Chan, Client );
429 assert( cl2chan != NULL );
431 x[0] = Mode; x[1] = '\0';
433 p = strchr( cl2chan->modes, x[0] );
434 if( ! p ) return FALSE;
436 /* Client hat den Mode -> loeschen */
443 } /* Channel_UserModeDel */
446 GLOBAL CHAR *Channel_UserModes( CHANNEL *Chan, CLIENT *Client )
448 /* Channel-Modes eines Users liefern */
452 assert( Chan != NULL );
453 assert( Client != NULL );
455 cl2chan = Get_Cl2Chan( Chan, Client );
456 assert( cl2chan != NULL );
458 return cl2chan->modes;
459 } /* Channel_UserModes */
462 GLOBAL BOOLEAN Channel_IsMemberOf( CHANNEL *Chan, CLIENT *Client )
464 /* Pruefen, ob Client Mitglied in Channel ist */
466 assert( Chan != NULL );
467 assert( Client != NULL );
469 if( Get_Cl2Chan( Chan, Client )) return TRUE;
471 } /* Channel_IsMemberOf */
474 GLOBAL CHAR *Channel_Topic( CHANNEL *Chan )
476 assert( Chan != NULL );
478 } /* Channel_Topic */
481 GLOBAL VOID Channel_SetTopic( CHANNEL *Chan, CHAR *Topic )
483 assert( Chan != NULL );
484 assert( Topic != NULL );
486 strncpy( Chan->topic, Topic, CHANNEL_TOPIC_LEN - 1 );
487 Chan->topic[CHANNEL_TOPIC_LEN - 1] = '\0';
488 } /* Channel_SetTopic */
491 LOCAL CHANNEL *New_Chan( CHAR *Name )
493 /* Neue Channel-Struktur anlegen */
497 assert( Name != NULL );
499 c = malloc( sizeof( CHANNEL ));
502 Log( LOG_EMERG, "Can't allocate memory!" );
506 strncpy( c->name, Name, CHANNEL_NAME_LEN - 1 );
507 c->name[CHANNEL_NAME_LEN - 1] = '\0';
508 strcpy( c->modes, "" );
509 strcpy( c->topic, "" );
511 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
517 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
521 assert( Chan != NULL );
522 assert( Client != NULL );
524 cl2chan = My_Cl2Chan;
527 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
528 cl2chan = cl2chan->next;
534 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client )
538 assert( Chan != NULL );
539 assert( Client != NULL );
541 /* neue CL2CHAN-Struktur anlegen */
542 cl2chan = malloc( sizeof( CL2CHAN ));
545 Log( LOG_EMERG, "Can't allocate memory!" );
548 cl2chan->channel = Chan;
549 cl2chan->client = Client;
550 strcpy( cl2chan->modes, "" );
553 cl2chan->next = My_Cl2Chan;
554 My_Cl2Chan = cl2chan;
556 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
562 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART )
564 CL2CHAN *cl2chan, *last_cl2chan;
567 assert( Chan != NULL );
568 assert( Client != NULL );
569 assert( Origin != NULL );
570 assert( Reason != NULL );
573 cl2chan = My_Cl2Chan;
576 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
577 last_cl2chan = cl2chan;
578 cl2chan = cl2chan->next;
580 if( ! cl2chan ) return FALSE;
582 c = cl2chan->channel;
585 /* Aus Verkettung loesen und freigeben */
586 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
587 else My_Cl2Chan = cl2chan->next;
590 if( ServerPART ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
591 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
592 if(( Client_Conn( Origin ) > NONE ) && ( Client_Type( Origin ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
594 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
596 /* Wenn Channel nun leer: loeschen */
597 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
600 } /* Remove_Client */
603 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
605 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
606 } /* Get_First_Cl2Chan */
609 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
613 assert( Client != NULL || Channel != NULL );
618 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
619 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
620 cl2chan = cl2chan->next;
623 } /* Get_Next_Cl2Chan */
626 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan )
628 /* Channel-Struktur loeschen */
630 CHANNEL *chan, *last_chan;
636 if( chan == Chan ) break;
640 if( ! chan ) return FALSE;
642 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
644 /* Neu verketten und freigeben */
645 if( last_chan ) last_chan->next = chan->next;
646 else My_Channels = chan->next;
650 } /* Delete_Channel */