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 1.30 2002/08/26 23:47:58 alex Exp $
14 * channel.c: Management der Channels
35 #include "irc-write.h"
51 LOCAL CHANNEL *My_Channels;
52 LOCAL CL2CHAN *My_Cl2Chan;
55 LOCAL CHANNEL *New_Chan PARAMS(( CHAR *Name ));
56 LOCAL CL2CHAN *Get_Cl2Chan PARAMS(( CHANNEL *Chan, CLIENT *Client ));
57 LOCAL CL2CHAN *Add_Client PARAMS(( CHANNEL *Chan, CLIENT *Client ));
58 LOCAL BOOLEAN Remove_Client PARAMS(( INT Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN InformServer ));
59 LOCAL CL2CHAN *Get_First_Cl2Chan PARAMS(( CLIENT *Client, CHANNEL *Chan ));
60 LOCAL CL2CHAN *Get_Next_Cl2Chan PARAMS(( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan ));
61 LOCAL BOOLEAN Delete_Channel PARAMS(( CHANNEL *Chan ));
73 Channel_InitPredefined( VOID )
75 /* Vordefinierte persistente Channels erzeugen */
81 for( i = 0; i < Conf_Channel_Count; i++ )
83 /* Ist ein Name konfiguriert? */
84 if( ! Conf_Channel[i].name ) continue;
86 /* Gueltiger Channel-Name? */
87 if( ! Channel_IsValidName( Conf_Channel[i].name ))
89 Log( LOG_ERR, "Can't create pre-defined channel: invalid name: \"%s\"!", Conf_Channel[i].name );
94 chan = New_Chan( Conf_Channel[i].name );
98 chan->next = My_Channels;
100 Channel_ModeAdd( chan, 'P' );
101 Channel_SetTopic( chan, Conf_Channel[i].topic );
102 c = Conf_Channel[i].modes;
103 while( *c ) Channel_ModeAdd( chan, *c++ );
104 Log( LOG_INFO, "Created pre-defined channel \"%s\".", Conf_Channel[i].name );
106 else Log( LOG_ERR, "Can't create pre-defined channel \"%s\"!", Conf_Channel[i].name );
108 } /* Channel_InitPredefined */
115 CL2CHAN *cl2chan, *cl2chan_next;
117 /* Channel-Strukturen freigeben */
126 /* Channel-Zuordnungstabelle freigeben */
127 cl2chan = My_Cl2Chan;
130 cl2chan_next = cl2chan->next;
132 cl2chan = cl2chan_next;
138 Channel_Join( CLIENT *Client, CHAR *Name )
142 assert( Client != NULL );
143 assert( Name != NULL );
145 /* Valider Channel-Name? */
146 if( ! Channel_IsValidName( Name ))
148 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
153 chan = Channel_Search( Name );
156 /* Ist der Client bereits Mitglied? */
157 if( Get_Cl2Chan( chan, Client )) return FALSE;
161 /* Gibt es noch nicht? Dann neu anlegen: */
162 chan = New_Chan( Name );
163 if( ! chan ) return FALSE;
166 chan->next = My_Channels;
170 /* User dem Channel hinzufuegen */
171 if( ! Add_Client( chan, Client )) return FALSE;
177 Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
181 assert( Client != NULL );
182 assert( Name != NULL );
183 assert( Reason != NULL );
186 chan = Channel_Search( Name );
187 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
189 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
193 /* User aus Channel entfernen */
194 if( ! Remove_Client( REMOVE_PART, chan, Client, Origin, Reason, TRUE )) return FALSE;
200 Channel_Kick( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
204 assert( Client != NULL );
205 assert( Origin != NULL );
206 assert( Name != NULL );
207 assert( Reason != NULL );
210 chan = Channel_Search( Name );
213 IRC_WriteStrClient( Origin, ERR_NOSUCHCHANNEL_MSG, Client_ID( Origin ), Name );
217 /* Ist der User Mitglied in dem Channel? */
218 if( ! Channel_IsMemberOf( chan, Origin ))
220 IRC_WriteStrClient( Origin, ERR_NOTONCHANNEL_MSG, Client_ID( Origin ), Name );
224 /* Ist der User Channel-Operator? */
225 if( ! strchr( Channel_UserModes( chan, Origin ), 'o' ))
227 IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Name);
231 /* Ist der Ziel-User Mitglied im Channel? */
232 if( ! Channel_IsMemberOf( chan, Client ))
234 IRC_WriteStrClient( Origin, ERR_USERNOTINCHANNEL_MSG, Client_ID( Origin ), Client_ID( Client ), Name );
238 Remove_Client( REMOVE_KICK, chan, Client, Origin, Reason, TRUE );
243 Channel_Quit( CLIENT *Client, CHAR *Reason )
247 assert( Client != NULL );
248 assert( Reason != NULL );
254 Remove_Client( REMOVE_QUIT, c, Client, Client, Reason, FALSE );
261 Channel_Count( VOID )
274 } /* Channel_Count */
278 Channel_MemberCount( CHANNEL *Chan )
283 assert( Chan != NULL );
286 cl2chan = My_Cl2Chan;
289 if( cl2chan->channel == Chan ) count++;
290 cl2chan = cl2chan->next;
293 } /* Channel_MemberCount */
297 Channel_Name( CHANNEL *Chan )
299 assert( Chan != NULL );
305 Channel_Modes( CHANNEL *Chan )
307 assert( Chan != NULL );
309 } /* Channel_Modes */
313 Channel_First( VOID )
316 } /* Channel_First */
320 Channel_Next( CHANNEL *Chan )
322 assert( Chan != NULL );
328 Channel_Search( CHAR *Name )
330 /* Channel-Struktur suchen */
335 assert( Name != NULL );
337 search_hash = Hash( Name );
341 if( search_hash == c->hash )
343 /* lt. Hash-Wert: Treffer! */
344 if( strcasecmp( Name, c->name ) == 0 ) return c;
349 } /* Channel_Search */
353 Channel_FirstMember( CHANNEL *Chan )
355 assert( Chan != NULL );
356 return Get_First_Cl2Chan( NULL, Chan );
357 } /* Channel_FirstMember */
361 Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
363 assert( Chan != NULL );
364 assert( Cl2Chan != NULL );
365 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
366 } /* Channel_NextMember */
370 Channel_FirstChannelOf( CLIENT *Client )
372 assert( Client != NULL );
373 return Get_First_Cl2Chan( Client, NULL );
374 } /* Channel_FirstChannelOf */
378 Channel_NextChannelOf( CLIENT *Client, CL2CHAN *Cl2Chan )
380 assert( Client != NULL );
381 assert( Cl2Chan != NULL );
382 return Get_Next_Cl2Chan( Cl2Chan->next, Client, NULL );
383 } /* Channel_NextChannelOf */
387 Channel_GetClient( CL2CHAN *Cl2Chan )
389 assert( Cl2Chan != NULL );
390 return Cl2Chan->client;
391 } /* Channel_GetClient */
395 Channel_GetChannel( CL2CHAN *Cl2Chan )
397 assert( Cl2Chan != NULL );
398 return Cl2Chan->channel;
399 } /* Channel_GetChannel */
403 Channel_IsValidName( CHAR *Name )
405 /* Pruefen, ob Name als Channelname gueltig */
407 CHAR *ptr, badchars[10];
409 assert( Name != NULL );
411 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN )) return FALSE;
414 strcpy( badchars, " ,:\x07" );
417 if( strchr( badchars, *ptr )) return FALSE;
422 } /* Channel_IsValidName */
426 Channel_ModeAdd( CHANNEL *Chan, CHAR Mode )
428 /* Mode soll gesetzt werden. TRUE wird geliefert, wenn der
429 * Mode neu gesetzt wurde, FALSE, wenn der Channel den Mode
434 assert( Chan != NULL );
436 x[0] = Mode; x[1] = '\0';
437 if( ! strchr( Chan->modes, x[0] ))
439 /* Client hat den Mode noch nicht -> setzen */
440 strcat( Chan->modes, x );
444 } /* Channel_ModeAdd */
448 Channel_ModeDel( CHANNEL *Chan, CHAR Mode )
450 /* Mode soll geloescht werden. TRUE wird geliefert, wenn der
451 * Mode entfernt wurde, FALSE, wenn der Channel den Mode
452 * ueberhaupt nicht hatte. */
456 assert( Chan != NULL );
458 x[0] = Mode; x[1] = '\0';
460 p = strchr( Chan->modes, x[0] );
461 if( ! p ) return FALSE;
463 /* Client hat den Mode -> loeschen */
470 } /* Channel_ModeDel */
474 Channel_UserModeAdd( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
476 /* Channel-User-Mode soll gesetzt werden. TRUE wird geliefert,
477 * wenn der Mode neu gesetzt wurde, FALSE, wenn der User den
478 * Channel-Mode bereits hatte. */
483 assert( Chan != NULL );
484 assert( Client != NULL );
486 cl2chan = Get_Cl2Chan( Chan, Client );
487 assert( cl2chan != NULL );
489 x[0] = Mode; x[1] = '\0';
490 if( ! strchr( cl2chan->modes, x[0] ))
492 /* Client hat den Mode noch nicht -> setzen */
493 strcat( cl2chan->modes, x );
497 } /* Channel_UserModeAdd */
501 Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
503 /* Channel-User-Mode soll geloescht werden. TRUE wird geliefert,
504 * wenn der Mode entfernt wurde, FALSE, wenn der User den Channel-Mode
505 * ueberhaupt nicht hatte. */
510 assert( Chan != NULL );
511 assert( Client != NULL );
513 cl2chan = Get_Cl2Chan( Chan, Client );
514 assert( cl2chan != NULL );
516 x[0] = Mode; x[1] = '\0';
518 p = strchr( cl2chan->modes, x[0] );
519 if( ! p ) return FALSE;
521 /* Client hat den Mode -> loeschen */
528 } /* Channel_UserModeDel */
532 Channel_UserModes( CHANNEL *Chan, CLIENT *Client )
534 /* Channel-Modes eines Users liefern */
538 assert( Chan != NULL );
539 assert( Client != NULL );
541 cl2chan = Get_Cl2Chan( Chan, Client );
542 assert( cl2chan != NULL );
544 return cl2chan->modes;
545 } /* Channel_UserModes */
549 Channel_IsMemberOf( CHANNEL *Chan, CLIENT *Client )
551 /* Pruefen, ob Client Mitglied in Channel ist */
553 assert( Chan != NULL );
554 assert( Client != NULL );
556 if( Get_Cl2Chan( Chan, Client )) return TRUE;
558 } /* Channel_IsMemberOf */
562 Channel_Topic( CHANNEL *Chan )
564 assert( Chan != NULL );
566 } /* Channel_Topic */
570 Channel_SetTopic( CHANNEL *Chan, CHAR *Topic )
572 assert( Chan != NULL );
573 assert( Topic != NULL );
575 strncpy( Chan->topic, Topic, CHANNEL_TOPIC_LEN - 1 );
576 Chan->topic[CHANNEL_TOPIC_LEN - 1] = '\0';
577 } /* Channel_SetTopic */
581 Channel_Write( CHANNEL *Chan, CLIENT *From, CLIENT *Client, CHAR *Text )
583 BOOLEAN is_member, has_voice, is_op, ok;
585 /* Okay, Ziel ist ein Channel */
586 is_member = has_voice = is_op = FALSE;
587 if( Channel_IsMemberOf( Chan, From ))
590 if( strchr( Channel_UserModes( Chan, From ), 'v' )) has_voice = TRUE;
591 if( strchr( Channel_UserModes( Chan, From ), 'o' )) is_op = TRUE;
594 /* pruefen, ob Client in Channel schreiben darf */
596 if( strchr( Channel_Modes( Chan ), 'n' ) && ( ! is_member )) ok = FALSE;
597 if( strchr( Channel_Modes( Chan ), 'm' ) && ( ! is_op ) && ( ! has_voice )) ok = FALSE;
599 if( ! ok ) return IRC_WriteStrClient( From, ERR_CANNOTSENDTOCHAN_MSG, Client_ID( From ), Channel_Name( Chan ));
602 if( Client_Conn( From ) > NONE ) Conn_UpdateIdle( Client_Conn( From ));
603 return IRC_WriteStrChannelPrefix( Client, Chan, From, TRUE, "PRIVMSG %s :%s", Channel_Name( Chan ), Text );
604 } /* Channel_Write */
609 New_Chan( CHAR *Name )
611 /* Neue Channel-Struktur anlegen */
615 assert( Name != NULL );
617 c = malloc( sizeof( CHANNEL ));
620 Log( LOG_EMERG, "Can't allocate memory! [New_Chan]" );
624 strncpy( c->name, Name, CHANNEL_NAME_LEN - 1 );
625 c->name[CHANNEL_NAME_LEN - 1] = '\0';
626 strcpy( c->modes, "" );
627 strcpy( c->topic, "" );
628 c->hash = Hash( c->name );
630 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
637 Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
641 assert( Chan != NULL );
642 assert( Client != NULL );
644 cl2chan = My_Cl2Chan;
647 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
648 cl2chan = cl2chan->next;
655 Add_Client( CHANNEL *Chan, CLIENT *Client )
659 assert( Chan != NULL );
660 assert( Client != NULL );
662 /* neue CL2CHAN-Struktur anlegen */
663 cl2chan = malloc( sizeof( CL2CHAN ));
666 Log( LOG_EMERG, "Can't allocate memory! [Add_Client]" );
669 cl2chan->channel = Chan;
670 cl2chan->client = Client;
671 strcpy( cl2chan->modes, "" );
674 cl2chan->next = My_Cl2Chan;
675 My_Cl2Chan = cl2chan;
677 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
684 Remove_Client( INT Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN InformServer )
686 CL2CHAN *cl2chan, *last_cl2chan;
689 assert( Chan != NULL );
690 assert( Client != NULL );
691 assert( Origin != NULL );
692 assert( Reason != NULL );
695 cl2chan = My_Cl2Chan;
698 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
699 last_cl2chan = cl2chan;
700 cl2chan = cl2chan->next;
702 if( ! cl2chan ) return FALSE;
704 c = cl2chan->channel;
707 /* Aus Verkettung loesen und freigeben */
708 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
709 else My_Cl2Chan = cl2chan->next;
715 /* QUIT: andere Server wurden bereits informiert, vgl. Client_Destroy();
716 * hier also "nur" noch alle User in betroffenen Channeln infomieren */
717 assert( InformServer == FALSE );
718 IRC_WriteStrChannelPrefix( Origin, c, Origin, FALSE, "QUIT :%s", Reason );
719 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
722 /* User wurde geKICKed: ggf. andere Server sowie alle betroffenen User
723 * im entsprechenden Channel informieren */
724 if( InformServer ) IRC_WriteStrServersPrefix( Client_NextHop( Origin ), Origin, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason );
725 IRC_WriteStrChannelPrefix( Client, c, Origin, FALSE, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason );
726 if(( Client_Conn( Client ) > NONE ) && ( Client_Type( Client ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Client, Origin, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason );
727 Log( LOG_DEBUG, "User \"%s\" has been kicked of \"%s\" by \"%s\": %s.", Client_Mask( Client ), c->name, Client_ID( Origin ), Reason );
731 if( InformServer ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
732 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
733 if(( Client_Conn( Origin ) > NONE ) && ( Client_Type( Origin ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
734 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
737 /* Wenn Channel nun leer und nicht pre-defined: loeschen */
738 if( ! strchr( Channel_Modes( Chan ), 'P' ))
740 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
744 } /* Remove_Client */
748 Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
750 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
751 } /* Get_First_Cl2Chan */
755 Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
759 assert( Client != NULL || Channel != NULL );
764 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
765 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
766 cl2chan = cl2chan->next;
769 } /* Get_Next_Cl2Chan */
773 Delete_Channel( CHANNEL *Chan )
775 /* Channel-Struktur loeschen */
777 CHANNEL *chan, *last_chan;
783 if( chan == Chan ) break;
787 if( ! chan ) return FALSE;
789 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
791 /* Invite- und Ban-Lists aufraeumen */
792 Lists_DeleteChannel( chan );
794 /* Neu verketten und freigeben */
795 if( last_chan ) last_chan->next = chan->next;
796 else My_Channels = chan->next;
800 } /* Delete_Channel */