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 1.26 2002/06/01 15:55:17 alex Exp $
14 * channel.c: Management der Channels
35 #include "irc-write.h"
50 LOCAL CHANNEL *My_Channels;
51 LOCAL CL2CHAN *My_Cl2Chan;
54 LOCAL CHANNEL *New_Chan PARAMS(( CHAR *Name ));
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 ));
73 /* Vordefinierte persistente Channels erzeugen */
74 for( i = 0; i < Conf_Channel_Count; i++ )
76 /* Ist ein Name konfiguriert? */
77 if( ! Conf_Channel[i].name ) continue;
79 /* Gueltiger Channel-Name? */
80 if( ! Channel_IsValidName( Conf_Channel[i].name ))
82 Log( LOG_ERR, "Can't create pre-defined channel: invalid name: \"%s\"!", Conf_Channel[i].name );
87 chan = New_Chan( Conf_Channel[i].name );
91 chan->next = My_Channels;
93 Channel_ModeAdd( chan, 'P' );
94 Channel_SetTopic( chan, Conf_Channel[i].topic );
95 c = Conf_Channel[i].modes;
96 while( *c ) Channel_ModeAdd( chan, *c++ );
97 Log( LOG_INFO, "Created pre-defined channel \"%s\".", Conf_Channel[i].name );
99 else Log( LOG_ERR, "Can't create pre-defined channel \"%s\"!", Conf_Channel[i].name );
108 CL2CHAN *cl2chan, *cl2chan_next;
110 /* Channel-Strukturen freigeben */
119 /* Channel-Zuordnungstabelle freigeben */
120 cl2chan = My_Cl2Chan;
123 cl2chan_next = cl2chan->next;
125 cl2chan = cl2chan_next;
131 Channel_Join( CLIENT *Client, CHAR *Name )
135 assert( Client != NULL );
136 assert( Name != NULL );
138 /* Valider Channel-Name? */
139 if( ! Channel_IsValidName( Name ))
141 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
146 chan = Channel_Search( Name );
149 /* Ist der Client bereits Mitglied? */
150 if( Get_Cl2Chan( chan, Client )) return FALSE;
154 /* Gibt es noch nicht? Dann neu anlegen: */
155 chan = New_Chan( Name );
156 if( ! chan ) return FALSE;
159 chan->next = My_Channels;
163 /* User dem Channel hinzufuegen */
164 if( ! Add_Client( chan, Client )) return FALSE;
170 Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
174 assert( Client != NULL );
175 assert( Name != NULL );
176 assert( Reason != NULL );
179 chan = Channel_Search( Name );
180 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
182 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
186 /* User aus Channel entfernen */
187 if( ! Remove_Client( REMOVE_PART, chan, Client, Origin, Reason, TRUE )) return FALSE;
193 Channel_Kick( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
197 assert( Client != NULL );
198 assert( Origin != NULL );
199 assert( Name != NULL );
200 assert( Reason != NULL );
203 chan = Channel_Search( Name );
206 IRC_WriteStrClient( Origin, ERR_NOSUCHCHANNEL_MSG, Client_ID( Origin ), Name );
210 /* Ist der User Mitglied in dem Channel? */
211 if( ! Channel_IsMemberOf( chan, Origin ))
213 IRC_WriteStrClient( Origin, ERR_NOTONCHANNEL_MSG, Client_ID( Origin ), Name );
217 /* Ist der User Channel-Operator? */
218 if( ! strchr( Channel_UserModes( chan, Origin ), 'o' ))
220 IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Name);
224 /* Ist der Ziel-User Mitglied im Channel? */
225 if( ! Channel_IsMemberOf( chan, Client ))
227 IRC_WriteStrClient( Origin, ERR_USERNOTINCHANNEL_MSG, Client_ID( Origin ), Client_ID( Client ), Name );
231 Remove_Client( REMOVE_KICK, chan, Client, Origin, Reason, TRUE );
236 Channel_Quit( CLIENT *Client, CHAR *Reason )
240 assert( Client != NULL );
241 assert( Reason != NULL );
247 Remove_Client( REMOVE_QUIT, c, Client, Client, Reason, FALSE );
254 Channel_Count( VOID )
267 } /* Channel_Count */
271 Channel_MemberCount( CHANNEL *Chan )
276 assert( Chan != NULL );
279 cl2chan = My_Cl2Chan;
282 if( cl2chan->channel == Chan ) count++;
283 cl2chan = cl2chan->next;
286 } /* Channel_MemberCount */
290 Channel_Name( CHANNEL *Chan )
292 assert( Chan != NULL );
298 Channel_Modes( CHANNEL *Chan )
300 assert( Chan != NULL );
302 } /* Channel_Modes */
306 Channel_First( VOID )
309 } /* Channel_First */
313 Channel_Next( CHANNEL *Chan )
315 assert( Chan != NULL );
321 Channel_Search( CHAR *Name )
323 /* Channel-Struktur suchen */
328 assert( Name != NULL );
330 search_hash = Hash( Name );
334 if( search_hash == c->hash )
336 /* lt. Hash-Wert: Treffer! */
337 if( strcasecmp( Name, c->name ) == 0 ) return c;
342 } /* Channel_Search */
346 Channel_FirstMember( CHANNEL *Chan )
348 assert( Chan != NULL );
349 return Get_First_Cl2Chan( NULL, Chan );
350 } /* Channel_FirstMember */
354 Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
356 assert( Chan != NULL );
357 assert( Cl2Chan != NULL );
358 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
359 } /* Channel_NextMember */
363 Channel_FirstChannelOf( CLIENT *Client )
365 assert( Client != NULL );
366 return Get_First_Cl2Chan( Client, NULL );
367 } /* Channel_FirstChannelOf */
371 Channel_NextChannelOf( CLIENT *Client, CL2CHAN *Cl2Chan )
373 assert( Client != NULL );
374 assert( Cl2Chan != NULL );
375 return Get_Next_Cl2Chan( Cl2Chan->next, Client, NULL );
376 } /* Channel_NextChannelOf */
380 Channel_GetClient( CL2CHAN *Cl2Chan )
382 assert( Cl2Chan != NULL );
383 return Cl2Chan->client;
384 } /* Channel_GetClient */
388 Channel_GetChannel( CL2CHAN *Cl2Chan )
390 assert( Cl2Chan != NULL );
391 return Cl2Chan->channel;
392 } /* Channel_GetChannel */
396 Channel_IsValidName( CHAR *Name )
398 /* Pruefen, ob Name als Channelname gueltig */
400 CHAR *ptr, badchars[10];
402 assert( Name != NULL );
404 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN )) return FALSE;
407 strcpy( badchars, " ,:\x07" );
410 if( strchr( badchars, *ptr )) return FALSE;
415 } /* Channel_IsValidName */
419 Channel_ModeAdd( CHANNEL *Chan, CHAR Mode )
421 /* Mode soll gesetzt werden. TRUE wird geliefert, wenn der
422 * Mode neu gesetzt wurde, FALSE, wenn der Channel den Mode
427 assert( Chan != NULL );
429 x[0] = Mode; x[1] = '\0';
430 if( ! strchr( Chan->modes, x[0] ))
432 /* Client hat den Mode noch nicht -> setzen */
433 strcat( Chan->modes, x );
437 } /* Channel_ModeAdd */
441 Channel_ModeDel( CHANNEL *Chan, CHAR Mode )
443 /* Mode soll geloescht werden. TRUE wird geliefert, wenn der
444 * Mode entfernt wurde, FALSE, wenn der Channel den Mode
445 * ueberhaupt nicht hatte. */
449 assert( Chan != NULL );
451 x[0] = Mode; x[1] = '\0';
453 p = strchr( Chan->modes, x[0] );
454 if( ! p ) return FALSE;
456 /* Client hat den Mode -> loeschen */
463 } /* Channel_ModeDel */
467 Channel_UserModeAdd( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
469 /* Channel-User-Mode soll gesetzt werden. TRUE wird geliefert,
470 * wenn der Mode neu gesetzt wurde, FALSE, wenn der User den
471 * Channel-Mode bereits hatte. */
476 assert( Chan != NULL );
477 assert( Client != NULL );
479 cl2chan = Get_Cl2Chan( Chan, Client );
480 assert( cl2chan != NULL );
482 x[0] = Mode; x[1] = '\0';
483 if( ! strchr( cl2chan->modes, x[0] ))
485 /* Client hat den Mode noch nicht -> setzen */
486 strcat( cl2chan->modes, x );
490 } /* Channel_UserModeAdd */
494 Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
496 /* Channel-User-Mode soll geloescht werden. TRUE wird geliefert,
497 * wenn der Mode entfernt wurde, FALSE, wenn der User den Channel-Mode
498 * ueberhaupt nicht hatte. */
503 assert( Chan != NULL );
504 assert( Client != NULL );
506 cl2chan = Get_Cl2Chan( Chan, Client );
507 assert( cl2chan != NULL );
509 x[0] = Mode; x[1] = '\0';
511 p = strchr( cl2chan->modes, x[0] );
512 if( ! p ) return FALSE;
514 /* Client hat den Mode -> loeschen */
521 } /* Channel_UserModeDel */
525 Channel_UserModes( CHANNEL *Chan, CLIENT *Client )
527 /* Channel-Modes eines Users liefern */
531 assert( Chan != NULL );
532 assert( Client != NULL );
534 cl2chan = Get_Cl2Chan( Chan, Client );
535 assert( cl2chan != NULL );
537 return cl2chan->modes;
538 } /* Channel_UserModes */
542 Channel_IsMemberOf( CHANNEL *Chan, CLIENT *Client )
544 /* Pruefen, ob Client Mitglied in Channel ist */
546 assert( Chan != NULL );
547 assert( Client != NULL );
549 if( Get_Cl2Chan( Chan, Client )) return TRUE;
551 } /* Channel_IsMemberOf */
555 Channel_Topic( CHANNEL *Chan )
557 assert( Chan != NULL );
559 } /* Channel_Topic */
563 Channel_SetTopic( CHANNEL *Chan, CHAR *Topic )
565 assert( Chan != NULL );
566 assert( Topic != NULL );
568 strncpy( Chan->topic, Topic, CHANNEL_TOPIC_LEN - 1 );
569 Chan->topic[CHANNEL_TOPIC_LEN - 1] = '\0';
570 } /* Channel_SetTopic */
574 Channel_Write( CHANNEL *Chan, CLIENT *From, CLIENT *Client, CHAR *Text )
576 BOOLEAN is_member, has_voice, is_op, ok;
578 /* Okay, Ziel ist ein Channel */
579 is_member = has_voice = is_op = FALSE;
580 if( Channel_IsMemberOf( Chan, From ))
583 if( strchr( Channel_UserModes( Chan, From ), 'v' )) has_voice = TRUE;
584 if( strchr( Channel_UserModes( Chan, From ), 'o' )) is_op = TRUE;
587 /* pruefen, ob Client in Channel schreiben darf */
589 if( strchr( Channel_Modes( Chan ), 'n' ) && ( ! is_member )) ok = FALSE;
590 if( strchr( Channel_Modes( Chan ), 'm' ) && ( ! is_op ) && ( ! has_voice )) ok = FALSE;
592 if( ! ok ) return IRC_WriteStrClient( From, ERR_CANNOTSENDTOCHAN_MSG, Client_ID( From ), Channel_Name( Chan ));
595 if( Client_Conn( From ) > NONE ) Conn_UpdateIdle( Client_Conn( From ));
596 return IRC_WriteStrChannelPrefix( Client, Chan, From, TRUE, "PRIVMSG %s :%s", Channel_Name( Chan ), Text );
597 } /* Channel_Write */
602 New_Chan( CHAR *Name )
604 /* Neue Channel-Struktur anlegen */
608 assert( Name != NULL );
610 c = malloc( sizeof( CHANNEL ));
613 Log( LOG_EMERG, "Can't allocate memory!" );
617 strncpy( c->name, Name, CHANNEL_NAME_LEN - 1 );
618 c->name[CHANNEL_NAME_LEN - 1] = '\0';
619 strcpy( c->modes, "" );
620 strcpy( c->topic, "" );
621 c->hash = Hash( c->name );
623 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
630 Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
634 assert( Chan != NULL );
635 assert( Client != NULL );
637 cl2chan = My_Cl2Chan;
640 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
641 cl2chan = cl2chan->next;
648 Add_Client( CHANNEL *Chan, CLIENT *Client )
652 assert( Chan != NULL );
653 assert( Client != NULL );
655 /* neue CL2CHAN-Struktur anlegen */
656 cl2chan = malloc( sizeof( CL2CHAN ));
659 Log( LOG_EMERG, "Can't allocate memory!" );
662 cl2chan->channel = Chan;
663 cl2chan->client = Client;
664 strcpy( cl2chan->modes, "" );
667 cl2chan->next = My_Cl2Chan;
668 My_Cl2Chan = cl2chan;
670 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
677 Remove_Client( INT Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN InformServer )
679 CL2CHAN *cl2chan, *last_cl2chan;
682 assert( Chan != NULL );
683 assert( Client != NULL );
684 assert( Origin != NULL );
685 assert( Reason != NULL );
688 cl2chan = My_Cl2Chan;
691 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
692 last_cl2chan = cl2chan;
693 cl2chan = cl2chan->next;
695 if( ! cl2chan ) return FALSE;
697 c = cl2chan->channel;
700 /* Aus Verkettung loesen und freigeben */
701 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
702 else My_Cl2Chan = cl2chan->next;
708 /* QUIT: andere Server wurden bereits informiert, vgl. Client_Destroy();
709 * hier also "nur" noch alle User in betroffenen Channeln infomieren */
710 assert( InformServer == FALSE );
711 IRC_WriteStrChannelPrefix( Origin, c, Origin, FALSE, "QUIT :%s", Reason );
712 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
715 /* User wurde geKICKed: ggf. andere Server sowie alle betroffenen User
716 * im entsprechenden Channel informieren */
717 if( InformServer ) IRC_WriteStrServersPrefix( Client_NextHop( Origin ), Origin, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason );
718 IRC_WriteStrChannelPrefix( Client, c, Origin, FALSE, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason );
719 if(( Client_Conn( Client ) > NONE ) && ( Client_Type( Client ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Client, Origin, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason );
720 Log( LOG_DEBUG, "User \"%s\" has been kicked of \"%s\" by \"%s\": %s.", Client_Mask( Client ), c->name, Client_ID( Origin ), Reason );
724 if( InformServer ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
725 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
726 if(( Client_Conn( Origin ) > NONE ) && ( Client_Type( Origin ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
727 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
730 /* Wenn Channel nun leer und nicht pre-defined: loeschen */
731 if( ! strchr( Channel_Modes( Chan ), 'P' ))
733 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
737 } /* Remove_Client */
741 Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
743 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
744 } /* Get_First_Cl2Chan */
748 Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
752 assert( Client != NULL || Channel != NULL );
757 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
758 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
759 cl2chan = cl2chan->next;
762 } /* Get_Next_Cl2Chan */
766 Delete_Channel( CHANNEL *Chan )
768 /* Channel-Struktur loeschen */
770 CHANNEL *chan, *last_chan;
776 if( chan == Chan ) break;
780 if( ! chan ) return FALSE;
782 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
784 /* Neu verketten und freigeben */
785 if( last_chan ) last_chan->next = chan->next;
786 else My_Channels = chan->next;
790 } /* Delete_Channel */