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 1.32 2002/09/03 23:57:57 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 CL2CHAN *Get_Cl2Chan PARAMS(( CHANNEL *Chan, CLIENT *Client ));
56 LOCAL CL2CHAN *Add_Client PARAMS(( CHANNEL *Chan, CLIENT *Client ));
57 LOCAL BOOLEAN Remove_Client PARAMS(( INT Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN InformServer ));
58 LOCAL CL2CHAN *Get_First_Cl2Chan PARAMS(( CLIENT *Client, CHANNEL *Chan ));
59 LOCAL CL2CHAN *Get_Next_Cl2Chan PARAMS(( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan ));
60 LOCAL BOOLEAN Delete_Channel PARAMS(( CHANNEL *Chan ));
72 Channel_InitPredefined( VOID )
74 /* Vordefinierte persistente Channels erzeugen */
80 for( i = 0; i < Conf_Channel_Count; i++ )
82 /* Ist ein Name konfiguriert? */
83 if( ! Conf_Channel[i].name[0] ) continue;
85 /* Gueltiger Channel-Name? */
86 if( ! Channel_IsValidName( Conf_Channel[i].name ))
88 Log( LOG_ERR, "Can't create pre-defined channel: invalid name: \"%s\"!", Conf_Channel[i].name );
93 chan = Channel_Create( Conf_Channel[i].name );
96 Channel_ModeAdd( chan, 'P' );
97 Channel_SetTopic( chan, Conf_Channel[i].topic );
98 c = Conf_Channel[i].modes;
99 while( *c ) Channel_ModeAdd( chan, *c++ );
100 Log( LOG_INFO, "Created pre-defined channel \"%s\".", Conf_Channel[i].name );
102 else Log( LOG_ERR, "Can't create pre-defined channel \"%s\"!", Conf_Channel[i].name );
104 } /* Channel_InitPredefined */
111 CL2CHAN *cl2chan, *cl2chan_next;
113 /* Channel-Strukturen freigeben */
122 /* Channel-Zuordnungstabelle freigeben */
123 cl2chan = My_Cl2Chan;
126 cl2chan_next = cl2chan->next;
128 cl2chan = cl2chan_next;
134 Channel_Join( CLIENT *Client, CHAR *Name )
138 assert( Client != NULL );
139 assert( Name != NULL );
141 /* Valider Channel-Name? */
142 if( ! Channel_IsValidName( Name ))
144 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
149 chan = Channel_Search( Name );
152 /* Ist der Client bereits Mitglied? */
153 if( Get_Cl2Chan( chan, Client )) return FALSE;
157 /* Gibt es noch nicht? Dann neu anlegen: */
158 chan = Channel_Create( Name );
159 if( ! chan ) return FALSE;
162 /* User dem Channel hinzufuegen */
163 if( ! Add_Client( chan, Client )) return FALSE;
169 Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
173 assert( Client != NULL );
174 assert( Name != NULL );
175 assert( Reason != NULL );
178 chan = Channel_Search( Name );
179 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
181 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
185 /* User aus Channel entfernen */
186 if( ! Remove_Client( REMOVE_PART, chan, Client, Origin, Reason, TRUE )) return FALSE;
192 Channel_Kick( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
196 assert( Client != NULL );
197 assert( Origin != NULL );
198 assert( Name != NULL );
199 assert( Reason != NULL );
202 chan = Channel_Search( Name );
205 IRC_WriteStrClient( Origin, ERR_NOSUCHCHANNEL_MSG, Client_ID( Origin ), Name );
209 /* Ist der User Mitglied in dem Channel? */
210 if( ! Channel_IsMemberOf( chan, Origin ))
212 IRC_WriteStrClient( Origin, ERR_NOTONCHANNEL_MSG, Client_ID( Origin ), Name );
216 /* Ist der User Channel-Operator? */
217 if( ! strchr( Channel_UserModes( chan, Origin ), 'o' ))
219 IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Name);
223 /* Ist der Ziel-User Mitglied im Channel? */
224 if( ! Channel_IsMemberOf( chan, Client ))
226 IRC_WriteStrClient( Origin, ERR_USERNOTINCHANNEL_MSG, Client_ID( Origin ), Client_ID( Client ), Name );
230 Remove_Client( REMOVE_KICK, chan, Client, Origin, Reason, TRUE );
235 Channel_Quit( CLIENT *Client, CHAR *Reason )
239 assert( Client != NULL );
240 assert( Reason != NULL );
246 Remove_Client( REMOVE_QUIT, c, Client, Client, Reason, FALSE );
253 Channel_Count( VOID )
266 } /* Channel_Count */
270 Channel_MemberCount( CHANNEL *Chan )
275 assert( Chan != NULL );
278 cl2chan = My_Cl2Chan;
281 if( cl2chan->channel == Chan ) count++;
282 cl2chan = cl2chan->next;
285 } /* Channel_MemberCount */
289 Channel_Name( CHANNEL *Chan )
291 assert( Chan != NULL );
297 Channel_Modes( CHANNEL *Chan )
299 assert( Chan != NULL );
301 } /* Channel_Modes */
305 Channel_First( VOID )
308 } /* Channel_First */
312 Channel_Next( CHANNEL *Chan )
314 assert( Chan != NULL );
320 Channel_Search( CHAR *Name )
322 /* Channel-Struktur suchen */
327 assert( Name != NULL );
329 search_hash = Hash( Name );
333 if( search_hash == c->hash )
335 /* lt. Hash-Wert: Treffer! */
336 if( strcasecmp( Name, c->name ) == 0 ) return c;
341 } /* Channel_Search */
345 Channel_FirstMember( CHANNEL *Chan )
347 assert( Chan != NULL );
348 return Get_First_Cl2Chan( NULL, Chan );
349 } /* Channel_FirstMember */
353 Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
355 assert( Chan != NULL );
356 assert( Cl2Chan != NULL );
357 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
358 } /* Channel_NextMember */
362 Channel_FirstChannelOf( CLIENT *Client )
364 assert( Client != NULL );
365 return Get_First_Cl2Chan( Client, NULL );
366 } /* Channel_FirstChannelOf */
370 Channel_NextChannelOf( CLIENT *Client, CL2CHAN *Cl2Chan )
372 assert( Client != NULL );
373 assert( Cl2Chan != NULL );
374 return Get_Next_Cl2Chan( Cl2Chan->next, Client, NULL );
375 } /* Channel_NextChannelOf */
379 Channel_GetClient( CL2CHAN *Cl2Chan )
381 assert( Cl2Chan != NULL );
382 return Cl2Chan->client;
383 } /* Channel_GetClient */
387 Channel_GetChannel( CL2CHAN *Cl2Chan )
389 assert( Cl2Chan != NULL );
390 return Cl2Chan->channel;
391 } /* Channel_GetChannel */
395 Channel_IsValidName( CHAR *Name )
397 /* Pruefen, ob Name als Channelname gueltig */
399 CHAR *ptr, badchars[10];
401 assert( Name != NULL );
403 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN )) return FALSE;
406 strcpy( badchars, " ,:\x07" );
409 if( strchr( badchars, *ptr )) return FALSE;
414 } /* Channel_IsValidName */
418 Channel_ModeAdd( CHANNEL *Chan, CHAR Mode )
420 /* Mode soll gesetzt werden. TRUE wird geliefert, wenn der
421 * Mode neu gesetzt wurde, FALSE, wenn der Channel den Mode
426 assert( Chan != NULL );
428 x[0] = Mode; x[1] = '\0';
429 if( ! strchr( Chan->modes, x[0] ))
431 /* Client hat den Mode noch nicht -> setzen */
432 strcat( Chan->modes, x );
436 } /* Channel_ModeAdd */
440 Channel_ModeDel( CHANNEL *Chan, CHAR Mode )
442 /* Mode soll geloescht werden. TRUE wird geliefert, wenn der
443 * Mode entfernt wurde, FALSE, wenn der Channel den Mode
444 * ueberhaupt nicht hatte. */
448 assert( Chan != NULL );
450 x[0] = Mode; x[1] = '\0';
452 p = strchr( Chan->modes, x[0] );
453 if( ! p ) return FALSE;
455 /* Client hat den Mode -> loeschen */
462 } /* Channel_ModeDel */
466 Channel_UserModeAdd( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
468 /* Channel-User-Mode soll gesetzt werden. TRUE wird geliefert,
469 * wenn der Mode neu gesetzt wurde, FALSE, wenn der User den
470 * Channel-Mode bereits hatte. */
475 assert( Chan != NULL );
476 assert( Client != NULL );
478 cl2chan = Get_Cl2Chan( Chan, Client );
479 assert( cl2chan != NULL );
481 x[0] = Mode; x[1] = '\0';
482 if( ! strchr( cl2chan->modes, x[0] ))
484 /* Client hat den Mode noch nicht -> setzen */
485 strcat( cl2chan->modes, x );
489 } /* Channel_UserModeAdd */
493 Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
495 /* Channel-User-Mode soll geloescht werden. TRUE wird geliefert,
496 * wenn der Mode entfernt wurde, FALSE, wenn der User den Channel-Mode
497 * ueberhaupt nicht hatte. */
502 assert( Chan != NULL );
503 assert( Client != NULL );
505 cl2chan = Get_Cl2Chan( Chan, Client );
506 assert( cl2chan != NULL );
508 x[0] = Mode; x[1] = '\0';
510 p = strchr( cl2chan->modes, x[0] );
511 if( ! p ) return FALSE;
513 /* Client hat den Mode -> loeschen */
520 } /* Channel_UserModeDel */
524 Channel_UserModes( CHANNEL *Chan, CLIENT *Client )
526 /* Channel-Modes eines Users liefern */
530 assert( Chan != NULL );
531 assert( Client != NULL );
533 cl2chan = Get_Cl2Chan( Chan, Client );
534 assert( cl2chan != NULL );
536 return cl2chan->modes;
537 } /* Channel_UserModes */
541 Channel_IsMemberOf( CHANNEL *Chan, CLIENT *Client )
543 /* Pruefen, ob Client Mitglied in Channel ist */
545 assert( Chan != NULL );
546 assert( Client != NULL );
548 if( Get_Cl2Chan( Chan, Client )) return TRUE;
550 } /* Channel_IsMemberOf */
554 Channel_Topic( CHANNEL *Chan )
556 assert( Chan != NULL );
558 } /* Channel_Topic */
562 Channel_SetTopic( CHANNEL *Chan, CHAR *Topic )
564 assert( Chan != NULL );
565 assert( Topic != NULL );
567 strncpy( Chan->topic, Topic, CHANNEL_TOPIC_LEN - 1 );
568 Chan->topic[CHANNEL_TOPIC_LEN - 1] = '\0';
569 } /* Channel_SetTopic */
573 Channel_SetModes( CHANNEL *Chan, CHAR *Modes )
575 assert( Chan != NULL );
576 assert( Modes != NULL );
578 strncpy( Chan->modes, Modes, CHANNEL_MODE_LEN - 1 );
579 Chan->topic[CHANNEL_MODE_LEN - 1] = '\0';
580 } /* Channel_SetModes */
585 Channel_Write( CHANNEL *Chan, CLIENT *From, CLIENT *Client, CHAR *Text )
587 BOOLEAN is_member, has_voice, is_op, ok;
589 /* Okay, Ziel ist ein Channel */
590 is_member = has_voice = is_op = FALSE;
591 if( Channel_IsMemberOf( Chan, From ))
594 if( strchr( Channel_UserModes( Chan, From ), 'v' )) has_voice = TRUE;
595 if( strchr( Channel_UserModes( Chan, From ), 'o' )) is_op = TRUE;
598 /* pruefen, ob Client in Channel schreiben darf */
600 if( strchr( Channel_Modes( Chan ), 'n' ) && ( ! is_member )) ok = FALSE;
601 if( strchr( Channel_Modes( Chan ), 'm' ) && ( ! is_op ) && ( ! has_voice )) ok = FALSE;
603 if( ! ok ) return IRC_WriteStrClient( From, ERR_CANNOTSENDTOCHAN_MSG, Client_ID( From ), Channel_Name( Chan ));
606 if( Client_Conn( From ) > NONE ) Conn_UpdateIdle( Client_Conn( From ));
607 return IRC_WriteStrChannelPrefix( Client, Chan, From, TRUE, "PRIVMSG %s :%s", Channel_Name( Chan ), Text );
608 } /* Channel_Write */
612 Channel_Create( CHAR *Name )
614 /* Neue Channel-Struktur anlegen */
618 assert( Name != NULL );
620 c = malloc( sizeof( CHANNEL ));
623 Log( LOG_EMERG, "Can't allocate memory! [New_Chan]" );
627 strncpy( c->name, Name, CHANNEL_NAME_LEN - 1 );
628 c->name[CHANNEL_NAME_LEN - 1] = '\0';
629 strcpy( c->modes, "" );
630 strcpy( c->topic, "" );
631 c->hash = Hash( c->name );
634 c->next = My_Channels;
637 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
640 } /* Channel_Create */
644 Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
648 assert( Chan != NULL );
649 assert( Client != NULL );
651 cl2chan = My_Cl2Chan;
654 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
655 cl2chan = cl2chan->next;
662 Add_Client( CHANNEL *Chan, CLIENT *Client )
666 assert( Chan != NULL );
667 assert( Client != NULL );
669 /* neue CL2CHAN-Struktur anlegen */
670 cl2chan = malloc( sizeof( CL2CHAN ));
673 Log( LOG_EMERG, "Can't allocate memory! [Add_Client]" );
676 cl2chan->channel = Chan;
677 cl2chan->client = Client;
678 strcpy( cl2chan->modes, "" );
681 cl2chan->next = My_Cl2Chan;
682 My_Cl2Chan = cl2chan;
684 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
691 Remove_Client( INT Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN InformServer )
693 CL2CHAN *cl2chan, *last_cl2chan;
696 assert( Chan != NULL );
697 assert( Client != NULL );
698 assert( Origin != NULL );
699 assert( Reason != NULL );
702 cl2chan = My_Cl2Chan;
705 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
706 last_cl2chan = cl2chan;
707 cl2chan = cl2chan->next;
709 if( ! cl2chan ) return FALSE;
711 c = cl2chan->channel;
714 /* Aus Verkettung loesen und freigeben */
715 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
716 else My_Cl2Chan = cl2chan->next;
722 /* QUIT: andere Server wurden bereits informiert, vgl. Client_Destroy();
723 * hier also "nur" noch alle User in betroffenen Channeln infomieren */
724 assert( InformServer == FALSE );
725 IRC_WriteStrChannelPrefix( Origin, c, Origin, FALSE, "QUIT :%s", Reason );
726 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
729 /* User wurde geKICKed: ggf. andere Server sowie alle betroffenen User
730 * im entsprechenden Channel informieren */
731 if( InformServer ) IRC_WriteStrServersPrefix( Client_NextHop( Origin ), Origin, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason );
732 IRC_WriteStrChannelPrefix( Client, c, Origin, FALSE, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason );
733 if(( Client_Conn( Client ) > NONE ) && ( Client_Type( Client ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Client, Origin, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason );
734 Log( LOG_DEBUG, "User \"%s\" has been kicked of \"%s\" by \"%s\": %s.", Client_Mask( Client ), c->name, Client_ID( Origin ), Reason );
738 if( InformServer ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
739 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
740 if(( Client_Conn( Origin ) > NONE ) && ( Client_Type( Origin ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
741 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
744 /* Wenn Channel nun leer und nicht pre-defined: loeschen */
745 if( ! strchr( Channel_Modes( Chan ), 'P' ))
747 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
751 } /* Remove_Client */
755 Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
757 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
758 } /* Get_First_Cl2Chan */
762 Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
766 assert( Client != NULL || Channel != NULL );
771 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
772 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
773 cl2chan = cl2chan->next;
776 } /* Get_Next_Cl2Chan */
780 Delete_Channel( CHANNEL *Chan )
782 /* Channel-Struktur loeschen */
784 CHANNEL *chan, *last_chan;
790 if( chan == Chan ) break;
794 if( ! chan ) return FALSE;
796 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
798 /* Invite- und Ban-Lists aufraeumen */
799 Lists_DeleteChannel( chan );
801 /* Neu verketten und freigeben */
802 if( last_chan ) last_chan->next = chan->next;
803 else My_Channels = chan->next;
807 } /* Delete_Channel */