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 1.22 2002/05/21 00:10:16 alex Exp $
14 * channel.c: Management der Channels
31 #include "irc-write.h"
39 LOCAL CHANNEL *My_Channels;
40 LOCAL CL2CHAN *My_Cl2Chan;
43 LOCAL CHANNEL *New_Chan( CHAR *Name );
44 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client );
45 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client );
46 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART );
47 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan );
48 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan );
49 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan );
52 GLOBAL VOID Channel_Init( VOID )
61 /* Vordefinierte persistente Channels erzeugen */
62 for( i = 0; i < Conf_Channel_Count; i++ )
64 /* Ist ein Name konfiguriert? */
65 if( ! Conf_Channel[i].name ) continue;
67 /* Gueltiger Channel-Name? */
68 if( ! Channel_IsValidName( Conf_Channel[i].name ))
70 Log( LOG_ERR, "Can't create pre-defined channel: invalid name: \"%s\"!", Conf_Channel[i].name );
75 chan = New_Chan( Conf_Channel[i].name );
79 chan->next = My_Channels;
81 Channel_ModeAdd( chan, 'P' );
82 Channel_SetTopic( chan, Conf_Channel[i].topic );
83 c = Conf_Channel[i].modes;
84 while( *c ) Channel_ModeAdd( chan, *c++ );
85 Log( LOG_INFO, "Created pre-defined channel \"%s\".", Conf_Channel[i].name );
87 else Log( LOG_ERR, "Can't create pre-defined channel \"%s\"!", Conf_Channel[i].name );
92 GLOBAL VOID Channel_Exit( VOID )
95 CL2CHAN *cl2chan, *cl2chan_next;
97 /* Channel-Strukturen freigeben */
106 /* Channel-Zuordnungstabelle freigeben */
107 cl2chan = My_Cl2Chan;
110 cl2chan_next = cl2chan->next;
112 cl2chan = cl2chan_next;
117 GLOBAL BOOLEAN Channel_Join( CLIENT *Client, CHAR *Name )
121 assert( Client != NULL );
122 assert( Name != NULL );
124 /* Valider Channel-Name? */
125 if( ! Channel_IsValidName( Name ))
127 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
132 chan = Channel_Search( Name );
135 /* Ist der Client bereits Mitglied? */
136 if( Get_Cl2Chan( chan, Client )) return FALSE;
140 /* Gibt es noch nicht? Dann neu anlegen: */
141 chan = New_Chan( Name );
142 if( ! chan ) return FALSE;
145 chan->next = My_Channels;
149 /* User dem Channel hinzufuegen */
150 if( ! Add_Client( chan, Client )) return FALSE;
155 GLOBAL BOOLEAN Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
159 assert( Client != NULL );
160 assert( Name != NULL );
163 chan = Channel_Search( Name );
164 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
166 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
170 /* User aus Channel entfernen */
171 if( ! Remove_Client( chan, Client, Origin, Reason, TRUE )) return FALSE;
176 GLOBAL VOID Channel_RemoveClient( CLIENT *Client, CHAR *Reason )
180 assert( Client != NULL );
186 Remove_Client( c, Client, Client_ThisServer( ), Reason, FALSE );
189 } /* Channel_RemoveClient */
192 GLOBAL INT Channel_Count( VOID )
205 } /* Channel_Count */
208 GLOBAL INT Channel_MemberCount( CHANNEL *Chan )
213 assert( Chan != NULL );
216 cl2chan = My_Cl2Chan;
219 if( cl2chan->channel == Chan ) count++;
220 cl2chan = cl2chan->next;
223 } /* Channel_MemberCount */
226 GLOBAL CHAR *Channel_Name( CHANNEL *Chan )
228 assert( Chan != NULL );
233 GLOBAL CHAR *Channel_Modes( CHANNEL *Chan )
235 assert( Chan != NULL );
237 } /* Channel_Modes */
240 GLOBAL CHANNEL *Channel_First( VOID )
243 } /* Channel_First */
246 GLOBAL CHANNEL *Channel_Next( CHANNEL *Chan )
248 assert( Chan != NULL );
253 GLOBAL CHANNEL *Channel_Search( CHAR *Name )
255 /* Channel-Struktur suchen */
260 assert( Name != NULL );
262 search_hash = Hash( Name );
266 if( search_hash == c->hash )
268 /* lt. Hash-Wert: Treffer! */
269 if( strcasecmp( Name, c->name ) == 0 ) return c;
274 } /* Channel_Search */
277 GLOBAL CL2CHAN *Channel_FirstMember( CHANNEL *Chan )
279 assert( Chan != NULL );
280 return Get_First_Cl2Chan( NULL, Chan );
281 } /* Channel_FirstMember */
284 GLOBAL CL2CHAN *Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
286 assert( Chan != NULL );
287 assert( Cl2Chan != NULL );
288 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
289 } /* Channel_NextMember */
292 GLOBAL CL2CHAN *Channel_FirstChannelOf( CLIENT *Client )
294 assert( Client != NULL );
295 return Get_First_Cl2Chan( Client, NULL );
296 } /* Channel_FirstChannelOf */
299 GLOBAL CL2CHAN *Channel_NextChannelOf( CLIENT *Client, CL2CHAN *Cl2Chan )
301 assert( Client != NULL );
302 assert( Cl2Chan != NULL );
303 return Get_Next_Cl2Chan( Cl2Chan->next, Client, NULL );
304 } /* Channel_NextChannelOf */
307 GLOBAL CLIENT *Channel_GetClient( CL2CHAN *Cl2Chan )
309 assert( Cl2Chan != NULL );
310 return Cl2Chan->client;
311 } /* Channel_GetClient */
314 GLOBAL CHANNEL *Channel_GetChannel( CL2CHAN *Cl2Chan )
316 assert( Cl2Chan != NULL );
317 return Cl2Chan->channel;
318 } /* Channel_GetChannel */
321 GLOBAL BOOLEAN Channel_IsValidName( CHAR *Name )
323 /* Pr
\9ffen, ob Name als Channelname gueltig */
325 CHAR *ptr, badchars[] = " ,:\x07";
327 assert( Name != NULL );
329 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN )) return FALSE;
334 if( strchr( badchars, *ptr )) return FALSE;
339 } /* Channel_IsValidName */
342 GLOBAL BOOLEAN Channel_ModeAdd( CHANNEL *Chan, CHAR Mode )
344 /* Mode soll gesetzt werden. TRUE wird geliefert, wenn der
345 * Mode neu gesetzt wurde, FALSE, wenn der Channel den Mode
350 assert( Chan != NULL );
352 x[0] = Mode; x[1] = '\0';
353 if( ! strchr( Chan->modes, x[0] ))
355 /* Client hat den Mode noch nicht -> setzen */
356 strcat( Chan->modes, x );
360 } /* Channel_ModeAdd */
363 GLOBAL BOOLEAN Channel_ModeDel( CHANNEL *Chan, CHAR Mode )
365 /* Mode soll geloescht werden. TRUE wird geliefert, wenn der
366 * Mode entfernt wurde, FALSE, wenn der Channel den Mode
367 * ueberhaupt nicht hatte. */
371 assert( Chan != NULL );
373 x[0] = Mode; x[1] = '\0';
375 p = strchr( Chan->modes, x[0] );
376 if( ! p ) return FALSE;
378 /* Client hat den Mode -> loeschen */
385 } /* Channel_ModeDel */
388 GLOBAL BOOLEAN Channel_UserModeAdd( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
390 /* Channel-User-Mode soll gesetzt werden. TRUE wird geliefert,
391 * wenn der Mode neu gesetzt wurde, FALSE, wenn der User den
392 * Channel-Mode bereits hatte. */
397 assert( Chan != NULL );
398 assert( Client != NULL );
400 cl2chan = Get_Cl2Chan( Chan, Client );
401 assert( cl2chan != NULL );
403 x[0] = Mode; x[1] = '\0';
404 if( ! strchr( cl2chan->modes, x[0] ))
406 /* Client hat den Mode noch nicht -> setzen */
407 strcat( cl2chan->modes, x );
411 } /* Channel_UserModeAdd */
414 GLOBAL BOOLEAN Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, CHAR Mode )
416 /* Channel-User-Mode soll geloescht werden. TRUE wird geliefert,
417 * wenn der Mode entfernt wurde, FALSE, wenn der User den Channel-Mode
418 * ueberhaupt nicht hatte. */
423 assert( Chan != NULL );
424 assert( Client != NULL );
426 cl2chan = Get_Cl2Chan( Chan, Client );
427 assert( cl2chan != NULL );
429 x[0] = Mode; x[1] = '\0';
431 p = strchr( cl2chan->modes, x[0] );
432 if( ! p ) return FALSE;
434 /* Client hat den Mode -> loeschen */
441 } /* Channel_UserModeDel */
444 GLOBAL CHAR *Channel_UserModes( CHANNEL *Chan, CLIENT *Client )
446 /* Channel-Modes eines Users liefern */
450 assert( Chan != NULL );
451 assert( Client != NULL );
453 cl2chan = Get_Cl2Chan( Chan, Client );
454 assert( cl2chan != NULL );
456 return cl2chan->modes;
457 } /* Channel_UserModes */
460 GLOBAL BOOLEAN Channel_IsMemberOf( CHANNEL *Chan, CLIENT *Client )
462 /* Pruefen, ob Client Mitglied in Channel ist */
464 assert( Chan != NULL );
465 assert( Client != NULL );
467 if( Get_Cl2Chan( Chan, Client )) return TRUE;
469 } /* Channel_IsMemberOf */
472 GLOBAL CHAR *Channel_Topic( CHANNEL *Chan )
474 assert( Chan != NULL );
476 } /* Channel_Topic */
479 GLOBAL VOID Channel_SetTopic( CHANNEL *Chan, CHAR *Topic )
481 assert( Chan != NULL );
482 assert( Topic != NULL );
484 strncpy( Chan->topic, Topic, CHANNEL_TOPIC_LEN - 1 );
485 Chan->topic[CHANNEL_TOPIC_LEN - 1] = '\0';
486 } /* Channel_SetTopic */
489 GLOBAL BOOLEAN Channel_Write( CHANNEL *Chan, CLIENT *From, CLIENT *Client, CHAR *Text )
491 BOOLEAN is_member, has_voice, is_op, ok;
493 /* Okay, Ziel ist ein Channel */
494 is_member = has_voice = is_op = FALSE;
495 if( Channel_IsMemberOf( Chan, From ))
498 if( strchr( Channel_UserModes( Chan, From ), 'v' )) has_voice = TRUE;
499 if( strchr( Channel_UserModes( Chan, From ), 'o' )) is_op = TRUE;
502 /* pruefen, ob Client in Channel schreiben darf */
504 if( strchr( Channel_Modes( Chan ), 'n' ) && ( ! is_member )) ok = FALSE;
505 if( strchr( Channel_Modes( Chan ), 'm' ) && ( ! is_op ) && ( ! has_voice )) ok = FALSE;
507 if( ! ok ) return IRC_WriteStrClient( From, ERR_CANNOTSENDTOCHAN_MSG, Client_ID( From ), Channel_Name( Chan ));
510 if( Client_Conn( From ) > NONE ) Conn_UpdateIdle( Client_Conn( From ));
511 return IRC_WriteStrChannelPrefix( Client, Chan, From, TRUE, "PRIVMSG %s :%s", Channel_Name( Chan ), Text );
512 } /* Channel_Write */
516 LOCAL CHANNEL *New_Chan( CHAR *Name )
518 /* Neue Channel-Struktur anlegen */
522 assert( Name != NULL );
524 c = malloc( sizeof( CHANNEL ));
527 Log( LOG_EMERG, "Can't allocate memory!" );
531 strncpy( c->name, Name, CHANNEL_NAME_LEN - 1 );
532 c->name[CHANNEL_NAME_LEN - 1] = '\0';
533 strcpy( c->modes, "" );
534 strcpy( c->topic, "" );
535 c->hash = Hash( c->name );
537 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
543 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
547 assert( Chan != NULL );
548 assert( Client != NULL );
550 cl2chan = My_Cl2Chan;
553 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
554 cl2chan = cl2chan->next;
560 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client )
564 assert( Chan != NULL );
565 assert( Client != NULL );
567 /* neue CL2CHAN-Struktur anlegen */
568 cl2chan = malloc( sizeof( CL2CHAN ));
571 Log( LOG_EMERG, "Can't allocate memory!" );
574 cl2chan->channel = Chan;
575 cl2chan->client = Client;
576 strcpy( cl2chan->modes, "" );
579 cl2chan->next = My_Cl2Chan;
580 My_Cl2Chan = cl2chan;
582 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
588 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART )
590 CL2CHAN *cl2chan, *last_cl2chan;
593 assert( Chan != NULL );
594 assert( Client != NULL );
595 assert( Origin != NULL );
596 assert( Reason != NULL );
599 cl2chan = My_Cl2Chan;
602 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
603 last_cl2chan = cl2chan;
604 cl2chan = cl2chan->next;
606 if( ! cl2chan ) return FALSE;
608 c = cl2chan->channel;
611 /* Aus Verkettung loesen und freigeben */
612 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
613 else My_Cl2Chan = cl2chan->next;
616 if( ServerPART ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
617 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
618 if(( Client_Conn( Origin ) > NONE ) && ( Client_Type( Origin ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
620 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
622 /* Wenn Channel nun leer und nicht pre-defined: loeschen */
623 if( ! strchr( Channel_Modes( Chan ), 'P' ))
625 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
629 } /* Remove_Client */
632 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
634 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
635 } /* Get_First_Cl2Chan */
638 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
642 assert( Client != NULL || Channel != NULL );
647 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
648 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
649 cl2chan = cl2chan->next;
652 } /* Get_Next_Cl2Chan */
655 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan )
657 /* Channel-Struktur loeschen */
659 CHANNEL *chan, *last_chan;
665 if( chan == Chan ) break;
669 if( ! chan ) return FALSE;
671 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
673 /* Neu verketten und freigeben */
674 if( last_chan ) last_chan->next = chan->next;
675 else My_Channels = chan->next;
679 } /* Delete_Channel */