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 1.8 2002/01/27 21:56:54 alex Exp $
14 * channel.c: Management der Channels
17 * Revision 1.8 2002/01/27 21:56:54 alex
18 * - weitere Anpassungen an Chennals, v.a. ueber Server-Links.
20 * Revision 1.7 2002/01/27 17:14:33 alex
21 * - diverse Aenderungen fuer Channels ueber mehrere Server.
23 * Revision 1.6 2002/01/26 18:41:55 alex
24 * - CHANNEL- und CL2CHAN-Strukturen in Header verlegt,
25 * - einige neue Funktionen (Channel_GetChannel(), Channel_FirstMember(), ...)
27 * Revision 1.5 2002/01/21 00:12:29 alex
28 * - begonnen, Channels zu implementieren :-)
30 * Revision 1.4 2002/01/16 22:09:07 alex
31 * - neue Funktion Channel_Count().
33 * Revision 1.3 2002/01/02 02:42:58 alex
34 * - Copyright-Texte aktualisiert.
36 * Revision 1.2 2001/12/31 02:18:51 alex
37 * - viele neue Befehle (WHOIS, ISON, OPER, DIE, RESTART),
38 * - neuen Header "defines.h" mit (fast) allen Konstanten.
39 * - Code Cleanups und viele "kleine" Aenderungen & Bugfixes.
41 * Revision 1.1 2001/12/14 08:13:43 alex
42 * - neues Modul begonnen :-)
66 LOCAL CHANNEL *My_Channels;
67 LOCAL CL2CHAN *My_Cl2Chan;
70 LOCAL CHANNEL *New_Chan( CHAR *Name );
71 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client );
72 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client );
73 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART );
74 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan );
75 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan );
76 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan );
79 GLOBAL VOID Channel_Init( VOID )
86 GLOBAL VOID Channel_Exit( VOID )
89 CL2CHAN *cl2chan, *cl2chan_next;
91 /* Channel-Strukturen freigeben */
100 /* Channel-Zuordnungstabelle freigeben */
101 cl2chan = My_Cl2Chan;
104 cl2chan_next = cl2chan->next;
106 cl2chan = cl2chan_next;
111 GLOBAL BOOLEAN Channel_Join( CLIENT *Client, CHAR *Name )
115 assert( Client != NULL );
116 assert( Name != NULL );
118 /* Valider Channel-Name? */
119 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN ))
121 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
126 chan = Channel_Search( Name );
129 /* Ist der Client bereits Mitglied? */
130 if( Get_Cl2Chan( chan, Client )) return FALSE;
134 /* Gibt es noch nicht? Dann neu anlegen: */
135 chan = New_Chan( Name );
136 if( ! chan ) return FALSE;
139 chan->next = My_Channels;
143 /* User dem Channel hinzufuegen */
144 if( ! Add_Client( chan, Client )) return FALSE;
149 GLOBAL BOOLEAN Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
153 assert( Client != NULL );
154 assert( Name != NULL );
157 chan = Channel_Search( Name );
158 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
160 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
164 /* User aus Channel entfernen */
165 if( ! Remove_Client( chan, Client, Origin, Reason, TRUE )) return FALSE;
170 GLOBAL VOID Channel_RemoveClient( CLIENT *Client, CHAR *Reason )
174 assert( Client != NULL );
180 Remove_Client( c, Client, Client_ThisServer( ), Reason, FALSE );
183 } /* Channel_RemoveClient */
186 GLOBAL INT Channel_Count( VOID )
199 } /* Channel_Count */
202 GLOBAL CHANNEL *Channel_Search( CHAR *Name )
204 /* Channel-Struktur suchen */
208 assert( Name != NULL );
212 if( strcasecmp( Name, c->name ) == 0 ) return c;
216 } /* Channel_Search */
219 GLOBAL CL2CHAN *Channel_FirstMember( CHANNEL *Chan )
221 assert( Chan != NULL );
222 return Get_First_Cl2Chan( NULL, Chan );
223 } /* Channel_IsMember */
226 GLOBAL CL2CHAN *Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
228 assert( Chan != NULL );
229 assert( Cl2Chan != NULL );
230 return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
231 } /* Channel_NextMember */
234 GLOBAL CLIENT *Channel_GetClient( CL2CHAN *Cl2Chan )
236 assert( Cl2Chan != NULL );
237 return Cl2Chan->client;
238 } /* Channel_GetClient */
241 GLOBAL CHANNEL *Channel_GetChannel( CL2CHAN *Cl2Chan )
243 assert( Cl2Chan != NULL );
244 return Cl2Chan->channel;
245 } /* Channel_GetChannel */
248 LOCAL CHANNEL *New_Chan( CHAR *Name )
250 /* Neue Channel-Struktur anlegen */
254 assert( Name != NULL );
256 c = malloc( sizeof( CHANNEL ));
259 Log( LOG_EMERG, "Can't allocate memory!" );
263 strncpy( c->name, Name, CHANNEL_NAME_LEN );
264 c->name[CHANNEL_NAME_LEN - 1] = '\0';
265 strcpy( c->modes, "" );
267 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
273 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
277 assert( Chan != NULL );
278 assert( Client != NULL );
280 cl2chan = My_Cl2Chan;
283 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
284 cl2chan = cl2chan->next;
290 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client )
294 assert( Chan != NULL );
295 assert( Client != NULL );
297 cl2chan = malloc( sizeof( CL2CHAN ));
300 Log( LOG_EMERG, "Can't allocate memory!" );
303 cl2chan->channel = Chan;
304 cl2chan->client = Client;
307 cl2chan->next = My_Cl2Chan;
308 My_Cl2Chan = cl2chan;
310 Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name );
316 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason, BOOLEAN ServerPART )
318 CL2CHAN *cl2chan, *last_cl2chan;
321 assert( Chan != NULL );
322 assert( Client != NULL );
323 assert( Origin != NULL );
324 assert( Reason != NULL );
327 cl2chan = My_Cl2Chan;
330 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
331 last_cl2chan = cl2chan;
332 cl2chan = cl2chan->next;
334 if( ! cl2chan ) return FALSE;
336 c = cl2chan->channel;
339 /* Aus Verkettung loesen und freigeben */
340 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
341 else My_Cl2Chan = cl2chan->next;
344 if( Client_Conn( Origin ) > NONE ) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
345 if( ServerPART ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
346 IRC_WriteStrChannelPrefix( Origin, c, Client, FALSE, "PART %s :%s", c->name, Reason );
348 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
350 /* Wenn Channel nun leer: loeschen */
351 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
354 } /* Remove_Client */
357 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
359 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
360 } /* Get_First_Cl2Chan */
363 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
367 assert( Client != NULL || Channel != NULL );
372 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
373 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
374 cl2chan = cl2chan->next;
377 } /* Get_Next_Cl2Chan */
380 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan )
382 /* Channel-Struktur loeschen */
384 CHANNEL *chan, *last_chan;
390 if( chan == Chan ) break;
394 if( ! chan ) return FALSE;
396 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
398 /* Neu verketten und freigeben */
399 if( last_chan ) last_chan->next = chan->next;
400 else My_Channels = chan->next;
404 } /* Delete_Channel */