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 1.5 2002/01/21 00:12:29 alex Exp $
14 * channel.c: Management der Channels
17 * Revision 1.5 2002/01/21 00:12:29 alex
18 * - begonnen, Channels zu implementieren :-)
20 * Revision 1.4 2002/01/16 22:09:07 alex
21 * - neue Funktion Channel_Count().
23 * Revision 1.3 2002/01/02 02:42:58 alex
24 * - Copyright-Texte aktualisiert.
26 * Revision 1.2 2001/12/31 02:18:51 alex
27 * - viele neue Befehle (WHOIS, ISON, OPER, DIE, RESTART),
28 * - neuen Header "defines.h" mit (fast) allen Konstanten.
29 * - Code Cleanups und viele "kleine" Aenderungen & Bugfixes.
31 * Revision 1.1 2001/12/14 08:13:43 alex
32 * - neues Modul begonnen :-)
53 typedef struct _CHANNEL
55 struct _CHANNEL *next;
56 CHAR name[CHANNEL_NAME_LEN]; /* Name des Channel */
57 CHAR modes[CHANNEL_MODE_LEN]; /* Channel-Modes */
61 typedef struct _CLIENT2CHAN
63 struct _CLIENT2CHAN *next;
66 CHAR modes[CHANNEL_MODE_LEN]; /* User-Modes in dem Channel */
70 LOCAL CHANNEL *My_Channels;
71 LOCAL CL2CHAN *My_Cl2Chan;
74 LOCAL CHANNEL *Get_Chan( CHAR *Name );
75 LOCAL CHANNEL *New_Chan( CHAR *Name );
76 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client );
77 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client );
78 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason );
79 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan );
80 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan );
81 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan );
84 GLOBAL VOID Channel_Init( VOID )
91 GLOBAL VOID Channel_Exit( VOID )
94 CL2CHAN *cl2chan, *cl2chan_next;
96 /* Channel-Strukturen freigeben */
105 /* Channel-Zuordnungstabelle freigeben */
106 cl2chan = My_Cl2Chan;
109 cl2chan_next = cl2chan->next;
111 cl2chan = cl2chan_next;
116 GLOBAL BOOLEAN Channel_Join( CLIENT *Client, CHAR *Name )
120 assert( Client != NULL );
121 assert( Name != NULL );
123 /* Valider Channel-Name? */
124 if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN ))
126 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
131 chan = Get_Chan( Name );
134 /* Ist der Client bereits Mitglied? */
135 if( Get_Cl2Chan( chan, Client )) return FALSE;
139 /* Gibt es noch nicht? Dann neu anlegen: */
140 chan = New_Chan( Name );
141 if( ! chan ) return FALSE;
144 chan->next = My_Channels;
148 /* User dem Channel hinzufuegen */
149 if( ! Add_Client( chan, Client )) return FALSE;
154 GLOBAL BOOLEAN Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
158 assert( Client != NULL );
159 assert( Name != NULL );
162 chan = Get_Chan( Name );
163 if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
165 IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
169 /* User aus Channel entfernen */
170 if( ! Remove_Client( chan, Client, Origin, Reason )) return FALSE;
175 GLOBAL VOID Channel_RemoveClient( CLIENT *Client, CHAR *Reason )
179 assert( Client != NULL );
185 Remove_Client( c, Client, Client_ThisServer( ), Reason );
188 } /* Channel_RemoveClient */
191 GLOBAL INT Channel_Count( VOID )
204 } /* Channel_Count */
207 LOCAL CHANNEL *Get_Chan( CHAR *Name )
209 /* Channel-Struktur suchen */
213 assert( Name != NULL );
217 if( strcasecmp( Name, c->name ) == 0 ) return c;
224 LOCAL CHANNEL *New_Chan( CHAR *Name )
226 /* Neue Channel-Struktur anlegen */
230 assert( Name != NULL );
232 c = malloc( sizeof( CHANNEL ));
235 Log( LOG_EMERG, "Can't allocate memory!" );
239 strncpy( c->name, Name, CHANNEL_NAME_LEN );
240 c->name[CHANNEL_NAME_LEN - 1] = '\0';
241 strcpy( c->modes, "" );
243 Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
249 LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
253 assert( Chan != NULL );
254 assert( Client != NULL );
256 cl2chan = My_Cl2Chan;
259 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
260 cl2chan = cl2chan->next;
266 LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client )
270 assert( Chan != NULL );
271 assert( Client != NULL );
273 cl2chan = malloc( sizeof( CL2CHAN ));
276 Log( LOG_EMERG, "Can't allocate memory!" );
279 cl2chan->channel = Chan;
280 cl2chan->client = Client;
283 cl2chan->next = My_Cl2Chan;
284 My_Cl2Chan = cl2chan;
290 LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason )
292 CL2CHAN *cl2chan, *last_cl2chan;
295 assert( Chan != NULL );
296 assert( Client != NULL );
297 assert( Origin != NULL );
298 assert( Reason != NULL );
301 cl2chan = My_Cl2Chan;
304 if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
305 last_cl2chan = cl2chan;
306 cl2chan = cl2chan->next;
308 if( ! cl2chan ) return FALSE;
310 c = cl2chan->channel;
313 /* Aus Verkettung loesen und freigeben */
314 if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
315 else My_Cl2Chan = cl2chan->next;
318 IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
319 IRC_WriteStrRelatedChannelPrefix( Origin, c->name, Client, "PART %s :%s", c->name, Reason );
321 Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
323 /* Wenn Channel nun leer: loeschen */
324 if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
327 } /* Remove_Client */
330 LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
332 return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
333 } /* Get_First_Cl2Chan */
336 LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
340 assert( Client != NULL || Channel != NULL );
345 if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
346 if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
347 cl2chan = cl2chan->next;
350 } /* Get_Next_Cl2Chan */
353 LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan )
355 /* Channel-Struktur loeschen */
357 CHANNEL *chan, *last_chan;
363 if( chan == Chan ) break;
367 if( ! chan ) return FALSE;
369 Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
371 /* Neu verketten und freigeben */
372 if( last_chan ) last_chan->next = chan->next;
373 else My_Channels = chan->next;
377 } /* Delete_Channel */