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 1.12 2002/02/06 16:48:48 alex Exp $
14 * channel.c: Management der Channels
17 * Revision 1.12 2002/02/06 16:48:48 alex
18 * - neue Funktion Channel_Modes() und Channel_IsValidName().
19 * - Channel-Namen werden (besser) validiert.
21 * Revision 1.11 2002/01/29 00:11:10 alex
22 * - neue Funktionen Channel_FirstChannelOf() und Channel_NextChannelOf().
24 * Revision 1.10 2002/01/28 01:16:15 alex
25 * - neue Funktionen Channel_Name(), Channel_First() und Channel_Next().
27 * Revision 1.9 2002/01/27 22:47:11 alex
28 * - PART wird nicht mehr an den Server verschickt, von dem es empfangen wurde.
30 * Revision 1.8 2002/01/27 21:56:54 alex
31 * - weitere Anpassungen an Chennals, v.a. ueber Server-Links.
33 * Revision 1.7 2002/01/27 17:14:33 alex
34 * - diverse Aenderungen fuer Channels ueber mehrere Server.
36 * Revision 1.6 2002/01/26 18:41:55 alex
37 * - CHANNEL- und CL2CHAN-Strukturen in Header verlegt,
38 * - einige neue Funktionen (Channel_GetChannel(), Channel_FirstMember(), ...)
40 * Revision 1.5 2002/01/21 00:12:29 alex
41 * - begonnen, Channels zu implementieren :-)
43 * Revision 1.4 2002/01/16 22:09:07 alex
44 * - neue Funktion Channel_Count().
46 * Revision 1.3 2002/01/02 02:42:58 alex
47 * - Copyright-Texte aktualisiert.
49 * Revision 1.2 2001/12/31 02:18:51 alex
50 * - viele neue Befehle (WHOIS, ISON, OPER, DIE, RESTART),
51 * - neuen Header "defines.h" mit (fast) allen Konstanten.
52 * - Code Cleanups und viele "kleine" Aenderungen & Bugfixes.
54 * Revision 1.1 2001/12/14 08:13:43 alex
55 * - neues Modul begonnen :-)
79 LOCAL CHANNEL *My_Channels;
80 LOCAL CL2CHAN *My_Cl2Chan;
83 LOCAL CHANNEL *New_Chan( CHAR *Name );
84 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client );
85 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client );
86 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART );
87 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan );
88 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan );
89 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan );
92 GLOBAL VOID Channel_Init( VOID )
99 GLOBAL VOID Channel_Exit( VOID )
102 CL2CHAN *cl2chan, *cl2chan_next;
104 /* Channel-Strukturen freigeben */
113 /* Channel-Zuordnungstabelle freigeben */
114 cl2chan = My_Cl2Chan;
117 cl2chan_next = cl2chan->next;
119 cl2chan = cl2chan_next;
124 GLOBAL BOOLEAN Channel_Join( CLIENT *Client, CHAR *Name )
128 assert( Client != NULL );
129 assert( Name != NULL );
131 /* Valider Channel-Name? */
132 if( ! Channel_IsValidName( Name ))
134 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
139 chan = Channel_Search( Name );
142 /* Ist der Client bereits Mitglied? */
143 if( Get_Cl2Chan( chan, Client )) return FALSE;
147 /* Gibt es noch nicht? Dann neu anlegen: */
148 chan = New_Chan( Name );
149 if( ! chan ) return FALSE;
152 chan->next = My_Channels;
156 /* User dem Channel hinzufuegen */
157 if( ! Add_Client( chan, Client )) return FALSE;
162 GLOBAL BOOLEAN Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
166 assert( Client != NULL );
167 assert( Name != NULL );
170 chan = Channel_Search( Name );
171 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
173 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
177 /* User aus Channel entfernen */
178 if( ! Remove_Client( chan, Client, Origin, Reason, TRUE )) return FALSE;
183 GLOBAL VOID Channel_RemoveClient( CLIENT *Client, CHAR *Reason )
187 assert( Client != NULL );
193 Remove_Client( c, Client, Client_ThisServer( ), Reason, FALSE );
196 } /* Channel_RemoveClient */
199 GLOBAL INT Channel_Count( VOID )
212 } /* Channel_Count */
215 GLOBAL CHAR *Channel_Name( CHANNEL *Chan )
217 assert( Chan != NULL );
222 GLOBAL CHAR *Channel_Modes( CHANNEL *Chan )
224 assert( Chan != NULL );
226 } /* Channel_Modes */
229 GLOBAL CHANNEL *Channel_First( VOID )
232 } /* Channel_First */
235 GLOBAL CHANNEL *Channel_Next( CHANNEL *Chan )
237 assert( Chan != NULL );
242 GLOBAL CHANNEL *Channel_Search( CHAR *Name )
244 /* Channel-Struktur suchen */
248 assert( Name != NULL );
252 if( strcasecmp( Name, c->name ) == 0 ) return c;
256 } /* Channel_Search */
259 GLOBAL CL2CHAN *Channel_FirstMember( CHANNEL *Chan )
261 assert( Chan != NULL );
262 return Get_First_Cl2Chan( NULL, Chan );
263 } /* Channel_FirstMember */
266 GLOBAL CL2CHAN *Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
268 assert( Chan != NULL );
269 assert( Cl2Chan != NULL );
270 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
271 } /* Channel_NextMember */
274 GLOBAL CL2CHAN *Channel_FirstChannelOf( CLIENT *Client )
276 assert( Client != NULL );
277 return Get_First_Cl2Chan( Client, NULL );
278 } /* Channel_FirstChannelOf */
281 GLOBAL CL2CHAN *Channel_NextChannelOf( CLIENT *Client, CL2CHAN *Cl2Chan )
283 assert( Client != NULL );
284 assert( Cl2Chan != NULL );
285 return Get_Next_Cl2Chan( Cl2Chan->next, Client, NULL );
286 } /* Channel_NextChannelOf */
289 GLOBAL CLIENT *Channel_GetClient( CL2CHAN *Cl2Chan )
291 assert( Cl2Chan != NULL );
292 return Cl2Chan->client;
293 } /* Channel_GetClient */
296 GLOBAL CHANNEL *Channel_GetChannel( CL2CHAN *Cl2Chan )
298 assert( Cl2Chan != NULL );
299 return Cl2Chan->channel;
300 } /* Channel_GetChannel */
303 GLOBAL BOOLEAN Channel_IsValidName( CHAR *Name )
305 /* Pr
\9ffen, ob Name als Channelname gueltig */
307 assert( Name != NULL );
309 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN )) return FALSE;
311 } /* Channel_IsValidName */
314 LOCAL CHANNEL *New_Chan( CHAR *Name )
316 /* Neue Channel-Struktur anlegen */
320 assert( Name != NULL );
322 c = malloc( sizeof( CHANNEL ));
325 Log( LOG_EMERG, "Can't allocate memory!" );
329 strncpy( c->name, Name, CHANNEL_NAME_LEN );
330 c->name[CHANNEL_NAME_LEN - 1] = '\0';
331 strcpy( c->modes, "" );
333 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
339 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
343 assert( Chan != NULL );
344 assert( Client != NULL );
346 cl2chan = My_Cl2Chan;
349 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
350 cl2chan = cl2chan->next;
356 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client )
360 assert( Chan != NULL );
361 assert( Client != NULL );
363 cl2chan = malloc( sizeof( CL2CHAN ));
366 Log( LOG_EMERG, "Can't allocate memory!" );
369 cl2chan->channel = Chan;
370 cl2chan->client = Client;
373 cl2chan->next = My_Cl2Chan;
374 My_Cl2Chan = cl2chan;
376 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
382 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART )
384 CL2CHAN *cl2chan, *last_cl2chan;
387 assert( Chan != NULL );
388 assert( Client != NULL );
389 assert( Origin != NULL );
390 assert( Reason != NULL );
393 cl2chan = My_Cl2Chan;
396 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
397 last_cl2chan = cl2chan;
398 cl2chan = cl2chan->next;
400 if( ! cl2chan ) return FALSE;
402 c = cl2chan->channel;
405 /* Aus Verkettung loesen und freigeben */
406 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
407 else My_Cl2Chan = cl2chan->next;
410 if( ServerPART ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
411 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
412 if(( Client_Conn( Origin ) > NONE ) && ( Client_Type( Origin ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
414 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
416 /* Wenn Channel nun leer: loeschen */
417 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
420 } /* Remove_Client */
423 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
425 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
426 } /* Get_First_Cl2Chan */
429 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
433 assert( Client != NULL || Channel != NULL );
438 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
439 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
440 cl2chan = cl2chan->next;
443 } /* Get_Next_Cl2Chan */
446 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan )
448 /* Channel-Struktur loeschen */
450 CHANNEL *chan, *last_chan;
456 if( chan == Chan ) break;
460 if( ! chan ) return FALSE;
462 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
464 /* Neu verketten und freigeben */
465 if( last_chan ) last_chan->next = chan->next;
466 else My_Channels = chan->next;
470 } /* Delete_Channel */