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 1.24 2002/05/30 16:52:21 alex Exp $
14 * channel.c: Management der Channels
35 #include "irc-write.h"
45 LOCAL CHANNEL *My_Channels;
46 LOCAL CL2CHAN *My_Cl2Chan;
49 LOCAL CHANNEL *New_Chan PARAMS(( CHAR *Name ));
50 LOCAL CL2CHAN *Get_Cl2Chan PARAMS(( CHANNEL *Chan, CLIENT *Client ));
51 LOCAL CL2CHAN *Add_Client PARAMS(( CHANNEL *Chan, CLIENT *Client ));
52 LOCAL BOOLEAN Remove_Client PARAMS(( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART ));
53 LOCAL CL2CHAN *Get_First_Cl2Chan PARAMS(( CLIENT *Client, CHANNEL *Chan ));
54 LOCAL CL2CHAN *Get_Next_Cl2Chan PARAMS(( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan ));
55 LOCAL BOOLEAN Delete_Channel PARAMS(( CHANNEL *Chan ));
68 /* Vordefinierte persistente Channels erzeugen */
69 for( i = 0; i < Conf_Channel_Count; i++ )
71 /* Ist ein Name konfiguriert? */
72 if( ! Conf_Channel[i].name ) continue;
74 /* Gueltiger Channel-Name? */
75 if( ! Channel_IsValidName( Conf_Channel[i].name ))
77 Log( LOG_ERR, "Can't create pre-defined channel: invalid name: \"%s\"!", Conf_Channel[i].name );
82 chan = New_Chan( Conf_Channel[i].name );
86 chan->next = My_Channels;
88 Channel_ModeAdd( chan, 'P' );
89 Channel_SetTopic( chan, Conf_Channel[i].topic );
90 c = Conf_Channel[i].modes;
91 while( *c ) Channel_ModeAdd( chan, *c++ );
92 Log( LOG_INFO, "Created pre-defined channel \"%s\".", Conf_Channel[i].name );
94 else Log( LOG_ERR, "Can't create pre-defined channel \"%s\"!", Conf_Channel[i].name );
103 CL2CHAN *cl2chan, *cl2chan_next;
105 /* Channel-Strukturen freigeben */
114 /* Channel-Zuordnungstabelle freigeben */
115 cl2chan = My_Cl2Chan;
118 cl2chan_next = cl2chan->next;
120 cl2chan = cl2chan_next;
126 Channel_Join( CLIENT *Client, CHAR *Name )
130 assert( Client != NULL );
131 assert( Name != NULL );
133 /* Valider Channel-Name? */
134 if( ! Channel_IsValidName( Name ))
136 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
141 chan = Channel_Search( Name );
144 /* Ist der Client bereits Mitglied? */
145 if( Get_Cl2Chan( chan, Client )) return FALSE;
149 /* Gibt es noch nicht? Dann neu anlegen: */
150 chan = New_Chan( Name );
151 if( ! chan ) return FALSE;
154 chan->next = My_Channels;
158 /* User dem Channel hinzufuegen */
159 if( ! Add_Client( chan, Client )) return FALSE;
165 Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
169 assert( Client != NULL );
170 assert( Name != NULL );
173 chan = Channel_Search( Name );
174 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
176 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
180 /* User aus Channel entfernen */
181 if( ! Remove_Client( chan, Client, Origin, Reason, TRUE )) return FALSE;
187 Channel_RemoveClient( CLIENT *Client, CHAR *Reason )
191 assert( Client != NULL );
197 Remove_Client( c, Client, Client_ThisServer( ), Reason, FALSE );
200 } /* Channel_RemoveClient */
204 Channel_Count( VOID )
217 } /* Channel_Count */
221 Channel_MemberCount( CHANNEL *Chan )
226 assert( Chan != NULL );
229 cl2chan = My_Cl2Chan;
232 if( cl2chan->channel == Chan ) count++;
233 cl2chan = cl2chan->next;
236 } /* Channel_MemberCount */
240 Channel_Name( CHANNEL *Chan )
242 assert( Chan != NULL );
248 Channel_Modes( CHANNEL *Chan )
250 assert( Chan != NULL );
252 } /* Channel_Modes */
256 Channel_First( VOID )
259 } /* Channel_First */
263 Channel_Next( CHANNEL *Chan )
265 assert( Chan != NULL );
271 Channel_Search( CHAR *Name )
273 /* Channel-Struktur suchen */
278 assert( Name != NULL );
280 search_hash = Hash( Name );
284 if( search_hash == c->hash )
286 /* lt. Hash-Wert: Treffer! */
287 if( strcasecmp( Name, c->name ) == 0 ) return c;
292 } /* Channel_Search */
296 Channel_FirstMember( CHANNEL *Chan )
298 assert( Chan != NULL );
299 return Get_First_Cl2Chan( NULL, Chan );
300 } /* Channel_FirstMember */
304 Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
306 assert( Chan != NULL );
307 assert( Cl2Chan != NULL );
308 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
309 } /* Channel_NextMember */
313 Channel_FirstChannelOf( CLIENT *Client )
315 assert( Client != NULL );
316 return Get_First_Cl2Chan( Client, NULL );
317 } /* Channel_FirstChannelOf */
321 Channel_NextChannelOf( CLIENT *Client, CL2CHAN *Cl2Chan )
323 assert( Client != NULL );
324 assert( Cl2Chan != NULL );
325 return Get_Next_Cl2Chan( Cl2Chan->next, Client, NULL );
326 } /* Channel_NextChannelOf */
330 Channel_GetClient( CL2CHAN *Cl2Chan )
332 assert( Cl2Chan != NULL );
333 return Cl2Chan->client;
334 } /* Channel_GetClient */
338 Channel_GetChannel( CL2CHAN *Cl2Chan )
340 assert( Cl2Chan != NULL );
341 return Cl2Chan->channel;
342 } /* Channel_GetChannel */
346 Channel_IsValidName( CHAR *Name )
348 /* Pruefen, ob Name als Channelname gueltig */
350 CHAR *ptr, badchars[10];
352 assert( Name != NULL );
354 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN )) return FALSE;
357 strcpy( badchars, " ,:\x07" );
360 if( strchr( badchars, *ptr )) return FALSE;
365 } /* Channel_IsValidName */
369 Channel_ModeAdd( CHANNEL *Chan, CHAR Mode )
371 /* Mode soll gesetzt werden. TRUE wird geliefert, wenn der
372 * Mode neu gesetzt wurde, FALSE, wenn der Channel den Mode
377 assert( Chan != NULL );
379 x[0] = Mode; x[1] = '\0';
380 if( ! strchr( Chan->modes, x[0] ))
382 /* Client hat den Mode noch nicht -> setzen */
383 strcat( Chan->modes, x );
387 } /* Channel_ModeAdd */
391 Channel_ModeDel( CHANNEL *Chan, CHAR Mode )
393 /* Mode soll geloescht werden. TRUE wird geliefert, wenn der
394 * Mode entfernt wurde, FALSE, wenn der Channel den Mode
395 * ueberhaupt nicht hatte. */
399 assert( Chan != NULL );
401 x[0] = Mode; x[1] = '\0';
403 p = strchr( Chan->modes, x[0] );
404 if( ! p ) return FALSE;
406 /* Client hat den Mode -> loeschen */
413 } /* Channel_ModeDel */
417 Channel_UserModeAdd( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
419 /* Channel-User-Mode soll gesetzt werden. TRUE wird geliefert,
420 * wenn der Mode neu gesetzt wurde, FALSE, wenn der User den
421 * Channel-Mode bereits hatte. */
426 assert( Chan != NULL );
427 assert( Client != NULL );
429 cl2chan = Get_Cl2Chan( Chan, Client );
430 assert( cl2chan != NULL );
432 x[0] = Mode; x[1] = '\0';
433 if( ! strchr( cl2chan->modes, x[0] ))
435 /* Client hat den Mode noch nicht -> setzen */
436 strcat( cl2chan->modes, x );
440 } /* Channel_UserModeAdd */
444 Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
446 /* Channel-User-Mode soll geloescht werden. TRUE wird geliefert,
447 * wenn der Mode entfernt wurde, FALSE, wenn der User den Channel-Mode
448 * ueberhaupt nicht hatte. */
453 assert( Chan != NULL );
454 assert( Client != NULL );
456 cl2chan = Get_Cl2Chan( Chan, Client );
457 assert( cl2chan != NULL );
459 x[0] = Mode; x[1] = '\0';
461 p = strchr( cl2chan->modes, x[0] );
462 if( ! p ) return FALSE;
464 /* Client hat den Mode -> loeschen */
471 } /* Channel_UserModeDel */
475 Channel_UserModes( CHANNEL *Chan, CLIENT *Client )
477 /* Channel-Modes eines Users liefern */
481 assert( Chan != NULL );
482 assert( Client != NULL );
484 cl2chan = Get_Cl2Chan( Chan, Client );
485 assert( cl2chan != NULL );
487 return cl2chan->modes;
488 } /* Channel_UserModes */
492 Channel_IsMemberOf( CHANNEL *Chan, CLIENT *Client )
494 /* Pruefen, ob Client Mitglied in Channel ist */
496 assert( Chan != NULL );
497 assert( Client != NULL );
499 if( Get_Cl2Chan( Chan, Client )) return TRUE;
501 } /* Channel_IsMemberOf */
505 Channel_Topic( CHANNEL *Chan )
507 assert( Chan != NULL );
509 } /* Channel_Topic */
513 Channel_SetTopic( CHANNEL *Chan, CHAR *Topic )
515 assert( Chan != NULL );
516 assert( Topic != NULL );
518 strncpy( Chan->topic, Topic, CHANNEL_TOPIC_LEN - 1 );
519 Chan->topic[CHANNEL_TOPIC_LEN - 1] = '\0';
520 } /* Channel_SetTopic */
524 Channel_Write( CHANNEL *Chan, CLIENT *From, CLIENT *Client, CHAR *Text )
526 BOOLEAN is_member, has_voice, is_op, ok;
528 /* Okay, Ziel ist ein Channel */
529 is_member = has_voice = is_op = FALSE;
530 if( Channel_IsMemberOf( Chan, From ))
533 if( strchr( Channel_UserModes( Chan, From ), 'v' )) has_voice = TRUE;
534 if( strchr( Channel_UserModes( Chan, From ), 'o' )) is_op = TRUE;
537 /* pruefen, ob Client in Channel schreiben darf */
539 if( strchr( Channel_Modes( Chan ), 'n' ) && ( ! is_member )) ok = FALSE;
540 if( strchr( Channel_Modes( Chan ), 'm' ) && ( ! is_op ) && ( ! has_voice )) ok = FALSE;
542 if( ! ok ) return IRC_WriteStrClient( From, ERR_CANNOTSENDTOCHAN_MSG, Client_ID( From ), Channel_Name( Chan ));
545 if( Client_Conn( From ) > NONE ) Conn_UpdateIdle( Client_Conn( From ));
546 return IRC_WriteStrChannelPrefix( Client, Chan, From, TRUE, "PRIVMSG %s :%s", Channel_Name( Chan ), Text );
547 } /* Channel_Write */
552 New_Chan( CHAR *Name )
554 /* Neue Channel-Struktur anlegen */
558 assert( Name != NULL );
560 c = malloc( sizeof( CHANNEL ));
563 Log( LOG_EMERG, "Can't allocate memory!" );
567 strncpy( c->name, Name, CHANNEL_NAME_LEN - 1 );
568 c->name[CHANNEL_NAME_LEN - 1] = '\0';
569 strcpy( c->modes, "" );
570 strcpy( c->topic, "" );
571 c->hash = Hash( c->name );
573 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
580 Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
584 assert( Chan != NULL );
585 assert( Client != NULL );
587 cl2chan = My_Cl2Chan;
590 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
591 cl2chan = cl2chan->next;
598 Add_Client( CHANNEL *Chan, CLIENT *Client )
602 assert( Chan != NULL );
603 assert( Client != NULL );
605 /* neue CL2CHAN-Struktur anlegen */
606 cl2chan = malloc( sizeof( CL2CHAN ));
609 Log( LOG_EMERG, "Can't allocate memory!" );
612 cl2chan->channel = Chan;
613 cl2chan->client = Client;
614 strcpy( cl2chan->modes, "" );
617 cl2chan->next = My_Cl2Chan;
618 My_Cl2Chan = cl2chan;
620 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
627 Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART )
629 CL2CHAN *cl2chan, *last_cl2chan;
632 assert( Chan != NULL );
633 assert( Client != NULL );
634 assert( Origin != NULL );
635 assert( Reason != NULL );
638 cl2chan = My_Cl2Chan;
641 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
642 last_cl2chan = cl2chan;
643 cl2chan = cl2chan->next;
645 if( ! cl2chan ) return FALSE;
647 c = cl2chan->channel;
650 /* Aus Verkettung loesen und freigeben */
651 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
652 else My_Cl2Chan = cl2chan->next;
655 if( ServerPART ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
656 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
657 if(( Client_Conn( Origin ) > NONE ) && ( Client_Type( Origin ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
659 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
661 /* Wenn Channel nun leer und nicht pre-defined: loeschen */
662 if( ! strchr( Channel_Modes( Chan ), 'P' ))
664 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
668 } /* Remove_Client */
672 Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
674 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
675 } /* Get_First_Cl2Chan */
679 Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
683 assert( Client != NULL || Channel != NULL );
688 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
689 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
690 cl2chan = cl2chan->next;
693 } /* Get_Next_Cl2Chan */
697 Delete_Channel( CHANNEL *Chan )
699 /* Channel-Struktur loeschen */
701 CHANNEL *chan, *last_chan;
707 if( chan == Chan ) break;
711 if( ! chan ) return FALSE;
713 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
715 /* Neu verketten und freigeben */
716 if( last_chan ) last_chan->next = chan->next;
717 else My_Channels = chan->next;
721 } /* Delete_Channel */