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 1.7 2002/01/27 17:14:33 alex Exp $
14 * channel.c: Management der Channels
17 * Revision 1.7 2002/01/27 17:14:33 alex
18 * - diverse Aenderungen fuer Channels ueber mehrere Server.
20 * Revision 1.6 2002/01/26 18:41:55 alex
21 * - CHANNEL- und CL2CHAN-Strukturen in Header verlegt,
22 * - einige neue Funktionen (Channel_GetChannel(), Channel_FirstMember(), ...)
24 * Revision 1.5 2002/01/21 00:12:29 alex
25 * - begonnen, Channels zu implementieren :-)
27 * Revision 1.4 2002/01/16 22:09:07 alex
28 * - neue Funktion Channel_Count().
30 * Revision 1.3 2002/01/02 02:42:58 alex
31 * - Copyright-Texte aktualisiert.
33 * Revision 1.2 2001/12/31 02:18:51 alex
34 * - viele neue Befehle (WHOIS, ISON, OPER, DIE, RESTART),
35 * - neuen Header "defines.h" mit (fast) allen Konstanten.
36 * - Code Cleanups und viele "kleine" Aenderungen & Bugfixes.
38 * Revision 1.1 2001/12/14 08:13:43 alex
39 * - neues Modul begonnen :-)
63 LOCAL CHANNEL *My_Channels;
64 LOCAL CL2CHAN *My_Cl2Chan;
67 LOCAL CHANNEL *New_Chan( CHAR *Name );
68 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client );
69 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client );
70 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART );
71 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan );
72 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan );
73 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan );
76 GLOBAL VOID Channel_Init( VOID )
83 GLOBAL VOID Channel_Exit( VOID )
86 CL2CHAN *cl2chan, *cl2chan_next;
88 /* Channel-Strukturen freigeben */
97 /* Channel-Zuordnungstabelle freigeben */
101 cl2chan_next = cl2chan->next;
103 cl2chan = cl2chan_next;
108 GLOBAL BOOLEAN Channel_Join( CLIENT *Client, CHAR *Name )
112 assert( Client != NULL );
113 assert( Name != NULL );
115 /* Valider Channel-Name? */
116 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN ))
118 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
123 chan = Channel_Search( Name );
126 /* Ist der Client bereits Mitglied? */
127 if( Get_Cl2Chan( chan, Client )) return FALSE;
131 /* Gibt es noch nicht? Dann neu anlegen: */
132 chan = New_Chan( Name );
133 if( ! chan ) return FALSE;
136 chan->next = My_Channels;
140 /* User dem Channel hinzufuegen */
141 if( ! Add_Client( chan, Client )) return FALSE;
146 GLOBAL BOOLEAN Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
150 assert( Client != NULL );
151 assert( Name != NULL );
154 chan = Channel_Search( Name );
155 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
157 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
161 /* User aus Channel entfernen */
162 if( ! Remove_Client( chan, Client, Origin, Reason, TRUE )) return FALSE;
167 GLOBAL VOID Channel_RemoveClient( CLIENT *Client, CHAR *Reason )
171 assert( Client != NULL );
177 Remove_Client( c, Client, Client_ThisServer( ), Reason, FALSE );
180 } /* Channel_RemoveClient */
183 GLOBAL INT Channel_Count( VOID )
196 } /* Channel_Count */
199 GLOBAL CHANNEL *Channel_Search( CHAR *Name )
201 /* Channel-Struktur suchen */
205 assert( Name != NULL );
209 if( strcasecmp( Name, c->name ) == 0 ) return c;
213 } /* Channel_Search */
216 GLOBAL CL2CHAN *Channel_FirstMember( CHANNEL *Chan )
218 assert( Chan != NULL );
219 return Get_First_Cl2Chan( NULL, Chan );
220 } /* Channel_IsMember */
223 GLOBAL CL2CHAN *Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
225 assert( Chan != NULL );
226 assert( Cl2Chan != NULL );
227 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
228 } /* Channel_NextMember */
231 GLOBAL CLIENT *Channel_GetClient( CL2CHAN *Cl2Chan )
233 assert( Cl2Chan != NULL );
234 return Cl2Chan->client;
235 } /* Channel_GetClient */
238 GLOBAL CHANNEL *Channel_GetChannel( CL2CHAN *Cl2Chan )
240 assert( Cl2Chan != NULL );
241 return Cl2Chan->channel;
242 } /* Channel_GetChannel */
245 LOCAL CHANNEL *New_Chan( CHAR *Name )
247 /* Neue Channel-Struktur anlegen */
251 assert( Name != NULL );
253 c = malloc( sizeof( CHANNEL ));
256 Log( LOG_EMERG, "Can't allocate memory!" );
260 strncpy( c->name, Name, CHANNEL_NAME_LEN );
261 c->name[CHANNEL_NAME_LEN - 1] = '\0';
262 strcpy( c->modes, "" );
264 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
270 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
274 assert( Chan != NULL );
275 assert( Client != NULL );
277 cl2chan = My_Cl2Chan;
280 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
281 cl2chan = cl2chan->next;
287 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client )
291 assert( Chan != NULL );
292 assert( Client != NULL );
294 cl2chan = malloc( sizeof( CL2CHAN ));
297 Log( LOG_EMERG, "Can't allocate memory!" );
300 cl2chan->channel = Chan;
301 cl2chan->client = Client;
304 cl2chan->next = My_Cl2Chan;
305 My_Cl2Chan = cl2chan;
307 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
313 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART )
315 CL2CHAN *cl2chan, *last_cl2chan;
318 assert( Chan != NULL );
319 assert( Client != NULL );
320 assert( Origin != NULL );
321 assert( Reason != NULL );
324 cl2chan = My_Cl2Chan;
327 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
328 last_cl2chan = cl2chan;
329 cl2chan = cl2chan->next;
331 if( ! cl2chan ) return FALSE;
333 c = cl2chan->channel;
336 /* Aus Verkettung loesen und freigeben */
337 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
338 else My_Cl2Chan = cl2chan->next;
341 if( Client_Conn( Origin ) > NONE ) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
342 if( ServerPART ) IRC_WriteStrServersPrefixID( Origin, Client, "PART %s :%s", c->name, Reason );
343 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
345 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
347 /* Wenn Channel nun leer: loeschen */
348 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
351 } /* Remove_Client */
354 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
356 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
357 } /* Get_First_Cl2Chan */
360 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
364 assert( Client != NULL || Channel != NULL );
369 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
370 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
371 cl2chan = cl2chan->next;
374 } /* Get_Next_Cl2Chan */
377 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan )
379 /* Channel-Struktur loeschen */
381 CHANNEL *chan, *last_chan;
387 if( chan == Chan ) break;
391 if( ! chan ) return FALSE;
393 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
395 /* Neu verketten und freigeben */
396 if( last_chan ) last_chan->next = chan->next;
397 else My_Channels = chan->next;
401 } /* Delete_Channel */