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 1.9 2002/01/27 22:47:11 alex Exp $
14 * channel.c: Management der Channels
17 * Revision 1.9 2002/01/27 22:47:11 alex
18 * - PART wird nicht mehr an den Server verschickt, von dem es empfangen wurde.
20 * Revision 1.8 2002/01/27 21:56:54 alex
21 * - weitere Anpassungen an Chennals, v.a. ueber Server-Links.
23 * Revision 1.7 2002/01/27 17:14:33 alex
24 * - diverse Aenderungen fuer Channels ueber mehrere Server.
26 * Revision 1.6 2002/01/26 18:41:55 alex
27 * - CHANNEL- und CL2CHAN-Strukturen in Header verlegt,
28 * - einige neue Funktionen (Channel_GetChannel(), Channel_FirstMember(), ...)
30 * Revision 1.5 2002/01/21 00:12:29 alex
31 * - begonnen, Channels zu implementieren :-)
33 * Revision 1.4 2002/01/16 22:09:07 alex
34 * - neue Funktion Channel_Count().
36 * Revision 1.3 2002/01/02 02:42:58 alex
37 * - Copyright-Texte aktualisiert.
39 * Revision 1.2 2001/12/31 02:18:51 alex
40 * - viele neue Befehle (WHOIS, ISON, OPER, DIE, RESTART),
41 * - neuen Header "defines.h" mit (fast) allen Konstanten.
42 * - Code Cleanups und viele "kleine" Aenderungen & Bugfixes.
44 * Revision 1.1 2001/12/14 08:13:43 alex
45 * - neues Modul begonnen :-)
69 LOCAL CHANNEL *My_Channels;
70 LOCAL CL2CHAN *My_Cl2Chan;
73 LOCAL CHANNEL *New_Chan( CHAR *Name );
74 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client );
75 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client );
76 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART );
77 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan );
78 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan );
79 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan );
82 GLOBAL VOID Channel_Init( VOID )
89 GLOBAL VOID Channel_Exit( VOID )
92 CL2CHAN *cl2chan, *cl2chan_next;
94 /* Channel-Strukturen freigeben */
103 /* Channel-Zuordnungstabelle freigeben */
104 cl2chan = My_Cl2Chan;
107 cl2chan_next = cl2chan->next;
109 cl2chan = cl2chan_next;
114 GLOBAL BOOLEAN Channel_Join( CLIENT *Client, CHAR *Name )
118 assert( Client != NULL );
119 assert( Name != NULL );
121 /* Valider Channel-Name? */
122 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN ))
124 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
129 chan = Channel_Search( Name );
132 /* Ist der Client bereits Mitglied? */
133 if( Get_Cl2Chan( chan, Client )) return FALSE;
137 /* Gibt es noch nicht? Dann neu anlegen: */
138 chan = New_Chan( Name );
139 if( ! chan ) return FALSE;
142 chan->next = My_Channels;
146 /* User dem Channel hinzufuegen */
147 if( ! Add_Client( chan, Client )) return FALSE;
152 GLOBAL BOOLEAN Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
156 assert( Client != NULL );
157 assert( Name != NULL );
160 chan = Channel_Search( Name );
161 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
163 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
167 /* User aus Channel entfernen */
168 if( ! Remove_Client( chan, Client, Origin, Reason, TRUE )) return FALSE;
173 GLOBAL VOID Channel_RemoveClient( CLIENT *Client, CHAR *Reason )
177 assert( Client != NULL );
183 Remove_Client( c, Client, Client_ThisServer( ), Reason, FALSE );
186 } /* Channel_RemoveClient */
189 GLOBAL INT Channel_Count( VOID )
202 } /* Channel_Count */
205 GLOBAL CHANNEL *Channel_Search( CHAR *Name )
207 /* Channel-Struktur suchen */
211 assert( Name != NULL );
215 if( strcasecmp( Name, c->name ) == 0 ) return c;
219 } /* Channel_Search */
222 GLOBAL CL2CHAN *Channel_FirstMember( CHANNEL *Chan )
224 assert( Chan != NULL );
225 return Get_First_Cl2Chan( NULL, Chan );
226 } /* Channel_IsMember */
229 GLOBAL CL2CHAN *Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
231 assert( Chan != NULL );
232 assert( Cl2Chan != NULL );
233 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
234 } /* Channel_NextMember */
237 GLOBAL CLIENT *Channel_GetClient( CL2CHAN *Cl2Chan )
239 assert( Cl2Chan != NULL );
240 return Cl2Chan->client;
241 } /* Channel_GetClient */
244 GLOBAL CHANNEL *Channel_GetChannel( CL2CHAN *Cl2Chan )
246 assert( Cl2Chan != NULL );
247 return Cl2Chan->channel;
248 } /* Channel_GetChannel */
251 LOCAL CHANNEL *New_Chan( CHAR *Name )
253 /* Neue Channel-Struktur anlegen */
257 assert( Name != NULL );
259 c = malloc( sizeof( CHANNEL ));
262 Log( LOG_EMERG, "Can't allocate memory!" );
266 strncpy( c->name, Name, CHANNEL_NAME_LEN );
267 c->name[CHANNEL_NAME_LEN - 1] = '\0';
268 strcpy( c->modes, "" );
270 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
276 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
280 assert( Chan != NULL );
281 assert( Client != NULL );
283 cl2chan = My_Cl2Chan;
286 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
287 cl2chan = cl2chan->next;
293 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client )
297 assert( Chan != NULL );
298 assert( Client != NULL );
300 cl2chan = malloc( sizeof( CL2CHAN ));
303 Log( LOG_EMERG, "Can't allocate memory!" );
306 cl2chan->channel = Chan;
307 cl2chan->client = Client;
310 cl2chan->next = My_Cl2Chan;
311 My_Cl2Chan = cl2chan;
313 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
319 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART )
321 CL2CHAN *cl2chan, *last_cl2chan;
324 assert( Chan != NULL );
325 assert( Client != NULL );
326 assert( Origin != NULL );
327 assert( Reason != NULL );
330 cl2chan = My_Cl2Chan;
333 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
334 last_cl2chan = cl2chan;
335 cl2chan = cl2chan->next;
337 if( ! cl2chan ) return FALSE;
339 c = cl2chan->channel;
342 /* Aus Verkettung loesen und freigeben */
343 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
344 else My_Cl2Chan = cl2chan->next;
347 if( ServerPART ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
348 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
349 if(( Client_Conn( Origin ) > NONE ) && ( Client_Type( Origin ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
351 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
353 /* Wenn Channel nun leer: loeschen */
354 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
357 } /* Remove_Client */
360 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
362 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
363 } /* Get_First_Cl2Chan */
366 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
370 assert( Client != NULL || Channel != NULL );
375 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
376 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
377 cl2chan = cl2chan->next;
380 } /* Get_Next_Cl2Chan */
383 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan )
385 /* Channel-Struktur loeschen */
387 CHANNEL *chan, *last_chan;
393 if( chan == Chan ) break;
397 if( ! chan ) return FALSE;
399 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
401 /* Neu verketten und freigeben */
402 if( last_chan ) last_chan->next = chan->next;
403 else My_Channels = chan->next;
407 } /* Delete_Channel */