2 * ngIRCd -- The Next Generation IRC Daemon
3 * Copyright (c)2001 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 comBase beteiligten Autoren finden Sie in der Datei AUTHORS.
12 * $Id: irc.c,v 1.12 2001/12/27 19:17:26 alex Exp $
17 * Revision 1.12 2001/12/27 19:17:26 alex
18 * - neue Befehle PRIVMSG, NOTICE, PING.
20 * Revision 1.11 2001/12/27 16:55:41 alex
21 * - neu: IRC_WriteStrRelated(), Aenderungen auch in IRC_WriteStrClient().
23 * Revision 1.10 2001/12/26 22:48:53 alex
24 * - MOTD-Datei ist nun konfigurierbar und wird gelesen.
26 * Revision 1.9 2001/12/26 14:45:37 alex
29 * Revision 1.8 2001/12/26 03:21:46 alex
30 * - PING/PONG-Befehle implementiert,
31 * - Meldungen ueberarbeitet: enthalten nun (fast) immer den Nick.
33 * Revision 1.7 2001/12/25 23:25:18 alex
34 * - und nochmal Aenderungen am Logging ;-)
36 * Revision 1.6 2001/12/25 23:13:33 alex
37 * - Debug-Meldungen angepasst.
39 * Revision 1.5 2001/12/25 22:02:42 alex
40 * - neuer IRC-Befehl "/QUIT". Verbessertes Logging & Debug-Ausgaben.
42 * Revision 1.4 2001/12/25 19:19:30 alex
43 * - bessere Fehler-Abfragen, diverse Bugfixes.
44 * - Nicks werden nur einmal vergeben :-)
45 * - /MOTD wird unterstuetzt.
47 * Revision 1.3 2001/12/24 01:34:06 alex
48 * - USER und NICK wird nun in beliebiger Reihenfolge akzeptiert (wg. BitchX)
49 * - MOTD-Ausgabe begonnen zu implementieren.
51 * Revision 1.2 2001/12/23 21:57:16 alex
52 * - erste IRC-Befehle zu implementieren begonnen.
54 * Revision 1.1 2001/12/14 08:13:43 alex
55 * - neues Modul begonnen :-)
79 #define CONNECTED TRUE
80 #define DISCONNECTED FALSE
83 LOCAL BOOLEAN Check_Valid_User( CLIENT *Client );
85 LOCAL BOOLEAN Hello_User( CLIENT *Client );
86 LOCAL BOOLEAN Show_MOTD( CLIENT *Client );
89 GLOBAL VOID IRC_Init( VOID )
94 GLOBAL VOID IRC_Exit( VOID )
99 GLOBAL BOOLEAN IRC_WriteStrClient( CLIENT *Client, CLIENT *Prefix, CHAR *Format, ... )
101 /* Text an Clients, lokal bzw. remote, senden. */
104 BOOLEAN ok = CONNECTED;
108 assert( Client != NULL );
109 assert( Format != NULL );
111 va_start( ap, Format );
112 vsnprintf( buffer, 1000, Format, ap );
115 if( Client->conn_id != NONE ) send_to = Client->conn_id;
116 else send_to = Client->introducer->conn_id;
118 if( Prefix ) ok = Conn_WriteStr( Client->conn_id, ":%s %s", Client_GetID( Prefix ), buffer );
119 else ok = Conn_WriteStr( Client->conn_id, buffer );
122 } /* IRC_WriteStrClient */
125 GLOBAL BOOLEAN IRC_WriteStrRelated( CLIENT *Client, CHAR *Format, ... )
128 BOOLEAN ok = CONNECTED;
131 assert( Client != NULL );
132 assert( Format != NULL );
134 va_start( ap, Format );
135 vsnprintf( buffer, 1000, Format, ap );
138 /* an den Client selber */
139 ok = IRC_WriteStrClient( Client, Client, buffer );
142 } /* IRC_WriteStrRelated */
145 GLOBAL BOOLEAN IRC_PASS( CLIENT *Client, REQUEST *Req )
147 assert( Client != NULL );
148 assert( Req != NULL );
150 if( Client->type == CLIENT_UNKNOWN )
152 Log( LOG_DEBUG, "Connection %d: got PASS command ...", Client->conn_id );
153 return IRC_WriteStrClient( Client, This_Server, ERR_UNKNOWNCOMMAND_MSG, Client_Name( Client ), Req->command );
155 else return IRC_WriteStrClient( Client, This_Server, ERR_ALREADYREGISTRED_MSG, Client_Name( Client ));
159 GLOBAL BOOLEAN IRC_NICK( CLIENT *Client, REQUEST *Req )
161 assert( Client != NULL );
162 assert( Req != NULL );
164 if( Client->type != CLIENT_SERVER && Client->type != CLIENT_SERVICE )
166 /* Falsche Anzahl Parameter? */
167 if( Req->argc != 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
169 /* pruefen, ob Nick bereits vergeben */
170 if( ! Client_CheckNick( Client, Req->argv[0] )) return CONNECTED;
172 if( Client->type == CLIENT_USER )
174 /* Nick-Aenderung: allen mitteilen! */
175 Log( LOG_INFO, "User \"%s!%s@%s\" (%s) changed nick: \"%s\" -> \"%s\".", Client->nick, Client->user, Client->host, Client->name, Client->nick, Req->argv[0] );
176 IRC_WriteStrRelated( Client, "NICK :%s", Req->argv[0] );
179 /* Client-Nick registrieren */
180 strcpy( Client->nick, Req->argv[0] );
182 if( Client->type != CLIENT_USER )
185 Log( LOG_DEBUG, "Connection %d: got NICK command ...", Client->conn_id );
186 if( Client->type == CLIENT_GOTUSER ) return Hello_User( Client );
187 else Client->type = CLIENT_GOTNICK;
191 else return IRC_WriteStrClient( Client, This_Server, ERR_ALREADYREGISTRED_MSG, Client_Name( Client ));
195 GLOBAL BOOLEAN IRC_USER( CLIENT *Client, REQUEST *Req )
197 assert( Client != NULL );
198 assert( Req != NULL );
200 if( Client->type == CLIENT_UNKNOWN || Client->type == CLIENT_GOTNICK || Client->type == CLIENT_GOTPASS )
202 /* Falsche Anzahl Parameter? */
203 if( Req->argc != 4 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
205 strncpy( Client->user, Req->argv[0], CLIENT_USER_LEN );
206 Client->user[CLIENT_USER_LEN] = '\0';
207 strncpy( Client->name, Req->argv[3], CLIENT_NAME_LEN );
208 Client->name[CLIENT_NAME_LEN] = '\0';
210 Log( LOG_DEBUG, "Connection %d: got USER command ...", Client->conn_id );
211 if( Client->type == CLIENT_GOTNICK ) return Hello_User( Client );
212 else Client->type = CLIENT_GOTUSER;
215 else if( Client->type == CLIENT_USER || Client->type == CLIENT_SERVER || Client->type == CLIENT_SERVICE )
217 return IRC_WriteStrClient( Client, This_Server, ERR_ALREADYREGISTRED_MSG, Client_Name( Client ));
219 else return IRC_WriteStrClient( Client, This_Server, ERR_NOTREGISTERED_MSG, Client_Name( Client ));
223 GLOBAL BOOLEAN IRC_QUIT( CLIENT *Client, REQUEST *Req )
225 assert( Client != NULL );
226 assert( Req != NULL );
228 if( Client->type != CLIENT_SERVER && Client->type != CLIENT_SERVICE )
230 /* Falsche Anzahl Parameter? */
231 if( Req->argc > 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
233 Conn_Close( Client->conn_id, "Client wants to quit." );
236 else return IRC_WriteStrClient( Client, This_Server, ERR_NOTREGISTERED_MSG, Client_Name( Client ));
240 GLOBAL BOOLEAN IRC_PING( CLIENT *Client, REQUEST *Req )
244 assert( Client != NULL );
245 assert( Req != NULL );
247 if( ! Check_Valid_User( Client )) return CONNECTED;
249 /* Falsche Anzahl Parameter? */
250 if( Req->argc < 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NOORIGIN_MSG, Client_Name( Client ));
251 if( Req->argc > 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
253 to = Client_Search( Req->argv[0] );
255 if( to ) return IRC_WriteStrClient( Client, This_Server, "PONG :%s", Client_Name( Client ));
256 else return IRC_WriteStrClient( Client, This_Server, ERR_NOSUCHNICK_MSG, Client_Name( Client ), Req->argv[0] );
260 GLOBAL BOOLEAN IRC_PONG( CLIENT *Client, REQUEST *Req )
262 assert( Client != NULL );
263 assert( Req != NULL );
265 if( ! Check_Valid_User( Client )) return CONNECTED;
267 /* Falsche Anzahl Parameter? */
268 if( Req->argc < 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NOORIGIN_MSG, Client_Name( Client ));
269 if( Req->argc > 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
271 /* Der Connection-Timestamp wurde schon beim Lesen aus dem Socket
272 * aktualisiert, daher muss das hier nicht mehr gemacht werden. */
274 Log( LOG_DEBUG, "Connection %d: received PONG.", Client->conn_id );
279 GLOBAL BOOLEAN IRC_MOTD( CLIENT *Client, REQUEST *Req )
281 assert( Client != NULL );
282 assert( Req != NULL );
284 if( ! Check_Valid_User( Client )) return CONNECTED;
286 /* Falsche Anzahl Parameter? */
287 if( Req->argc != 0 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
289 return Show_MOTD( Client );
293 GLOBAL BOOLEAN IRC_PRIVMSG( CLIENT *Client, REQUEST *Req )
297 assert( Client != NULL );
298 assert( Req != NULL );
300 if( ! Check_Valid_User( Client )) return CONNECTED;
302 /* Falsche Anzahl Parameter? */
303 if( Req->argc == 0 ) return IRC_WriteStrClient( Client, This_Server, ERR_NORECIPIENT_MSG, Client_Name( Client ), Req->command );
304 if( Req->argc == 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NOTEXTTOSEND_MSG, Client_Name( Client ));
305 if( Req->argc > 2 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
307 to = Client_Search( Req->argv[0] );
310 /* Okay, Ziel ist ein User */
311 return IRC_WriteStrClient( to, Client, "PRIVMSG %s :%s", to->nick, Req->argv[1] );
314 return IRC_WriteStrClient( Client, This_Server, ERR_NOSUCHNICK_MSG, Client_Name( Client ), Req->argv[0] );
318 GLOBAL BOOLEAN IRC_NOTICE( CLIENT *Client, REQUEST *Req )
322 assert( Client != NULL );
323 assert( Req != NULL );
325 if( ! Check_Valid_User( Client )) return CONNECTED;
327 /* Falsche Anzahl Parameter? */
328 if( Req->argc != 2 ) return CONNECTED;
330 to = Client_Search( Req->argv[0] );
333 /* Okay, Ziel ist ein User */
334 return IRC_WriteStrClient( to, Client, "NOTICE %s :%s", to->nick, Req->argv[1] );
341 LOCAL BOOLEAN Check_Valid_User( CLIENT *Client )
343 assert( Client != NULL );
345 if( Client->type != CLIENT_USER )
347 IRC_WriteStrClient( Client, This_Server, ERR_NOTREGISTERED_MSG, Client_Name( Client ));
351 } /* Check_Valid_User */
354 LOCAL BOOLEAN Hello_User( CLIENT *Client )
356 assert( Client != NULL );
357 assert( Client->nick[0] );
359 Log( LOG_INFO, "User \"%s!%s@%s\" (%s) registered.", Client->nick, Client->user, Client->host, Client->name );
361 IRC_WriteStrClient( Client, This_Server, RPL_WELCOME_MSG, Client->nick, Client_GetID( Client ));
362 IRC_WriteStrClient( Client, This_Server, RPL_YOURHOST_MSG, Client->nick, This_Server->host );
363 IRC_WriteStrClient( Client, This_Server, RPL_CREATED_MSG, Client->nick );
364 IRC_WriteStrClient( Client, This_Server, RPL_MYINFO_MSG, Client->nick, This_Server->host );
366 Client->type = CLIENT_USER;
368 return Show_MOTD( Client );
372 LOCAL BOOLEAN Show_MOTD( CLIENT *Client )
378 assert( Client != NULL );
379 assert( Client->nick[0] );
381 fd = fopen( Conf_MotdFile, "r" );
384 Log( LOG_WARNING, "Can't read MOTD file \"%s\": %s", Conf_MotdFile, strerror( errno ));
385 return IRC_WriteStrClient( Client, This_Server, ERR_NOMOTD_MSG, Client->nick );
388 IRC_WriteStrClient( Client, This_Server, RPL_MOTDSTART_MSG, Client->nick, This_Server->host );
391 if( ! fgets( line, 126, fd )) break;
392 if( line[strlen( line ) - 1] == '\n' ) line[strlen( line ) - 1] = '\0';
393 IRC_WriteStrClient( Client, This_Server, RPL_MOTD_MSG, Client->nick, line );
395 ok = IRC_WriteStrClient( Client, This_Server, RPL_ENDOFMOTD_MSG, Client->nick );