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 1.6 2001/12/25 23:13:33 alex Exp $
17 * Revision 1.6 2001/12/25 23:13:33 alex
18 * - Debug-Meldungen angepasst.
20 * Revision 1.5 2001/12/25 22:02:42 alex
21 * - neuer IRC-Befehl "/QUIT". Verbessertes Logging & Debug-Ausgaben.
23 * Revision 1.4 2001/12/25 19:19:30 alex
24 * - bessere Fehler-Abfragen, diverse Bugfixes.
25 * - Nicks werden nur einmal vergeben :-)
26 * - /MOTD wird unterstuetzt.
28 * Revision 1.3 2001/12/24 01:34:06 alex
29 * - USER und NICK wird nun in beliebiger Reihenfolge akzeptiert (wg. BitchX)
30 * - MOTD-Ausgabe begonnen zu implementieren.
32 * Revision 1.2 2001/12/23 21:57:16 alex
33 * - erste IRC-Befehle zu implementieren begonnen.
35 * Revision 1.1 2001/12/14 08:13:43 alex
36 * - neues Modul begonnen :-)
58 #define CONNECTED TRUE
59 #define DISCONNECTED FALSE
62 LOCAL BOOLEAN Check_Valid_User( CLIENT *Client );
64 LOCAL BOOLEAN Hello_User( CLIENT *Client );
65 LOCAL BOOLEAN Show_MOTD( CLIENT *Client );
68 GLOBAL VOID IRC_Init( VOID )
73 GLOBAL VOID IRC_Exit( VOID )
78 GLOBAL BOOLEAN IRC_WriteStr_Client( CLIENT *Client, CLIENT *Prefix, CHAR *Format, ... )
80 /* Text an Clients, lokal bzw. remote, senden. */
83 BOOLEAN ok = CONNECTED;
86 assert( Client != NULL );
87 assert( Format != NULL );
89 va_start( ap, Format );
91 if( Client->conn_id != NONE )
94 vsnprintf( buffer, 1000, Format, ap );
95 if( Prefix ) ok = Conn_WriteStr( Client->conn_id, ":%s %s", Prefix->host, buffer );
96 else ok = Conn_WriteStr( Client->conn_id, buffer );
101 Log( LOG_EMERG, "not implemented: IRC_WriteStr_Client()" );
106 } /* IRC_WriteStr_Client */
109 GLOBAL BOOLEAN IRC_PASS( CLIENT *Client, REQUEST *Req )
111 assert( Client != NULL );
112 assert( Req != NULL );
114 if( Client->type == CLIENT_UNKNOWN )
116 Log( LOG_DEBUG, "Connection %d: got PASS command ...", Client->conn_id );
117 return IRC_WriteStr_Client( Client, This_Server, ERR_UNKNOWNCOMMAND_MSG, Req->command );
119 else return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
123 GLOBAL BOOLEAN IRC_NICK( CLIENT *Client, REQUEST *Req )
127 assert( Client != NULL );
128 assert( Req != NULL );
130 if( Client->type != CLIENT_SERVER && Client->type != CLIENT_SERVICE )
132 /* Falsche Anzahl Parameter? */
133 if( Req->argc != 1 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
136 if( strlen( Req->argv[0] ) > CLIENT_NICK_LEN ) return IRC_WriteStr_Client( Client, This_Server, ERR_ERRONEUSNICKNAME_MSG, Req->argv[0] );
138 /* pruefen, ob Nick bereits vergeben */
142 if( strcasecmp( c->nick, Req->argv[0] ) == 0 )
144 /* den Nick gibt es bereits */
145 return IRC_WriteStr_Client( Client, This_Server, ERR_NICKNAMEINUSE_MSG, Req->argv[0] );
150 /* Client-Nick registrieren */
151 strcpy( Client->nick, Req->argv[0] );
153 if( Client->type != CLIENT_USER )
156 Log( LOG_DEBUG, "Connection %d: got NICK command ...", Client->conn_id );
157 if( Client->type == CLIENT_GOTUSER ) return Hello_User( Client );
158 else Client->type = CLIENT_GOTNICK;
162 else return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
166 GLOBAL BOOLEAN IRC_USER( CLIENT *Client, REQUEST *Req )
168 assert( Client != NULL );
169 assert( Req != NULL );
171 if( Client->type == CLIENT_UNKNOWN || Client->type == CLIENT_GOTNICK || Client->type == CLIENT_GOTPASS )
173 /* Falsche Anzahl Parameter? */
174 if( Req->argc != 4 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
176 strncpy( Client->user, Req->argv[0], CLIENT_USER_LEN );
177 Client->user[CLIENT_USER_LEN] = '\0';
178 strncpy( Client->name, Req->argv[3], CLIENT_NAME_LEN );
179 Client->name[CLIENT_NAME_LEN] = '\0';
181 Log( LOG_DEBUG, "Connection %d: got USER command ...", Client->conn_id );
182 if( Client->type == CLIENT_GOTNICK ) return Hello_User( Client );
183 else Client->type = CLIENT_GOTUSER;
186 else if( Client->type == CLIENT_USER || Client->type == CLIENT_SERVER || Client->type == CLIENT_SERVICE )
188 return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
190 else return IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
194 GLOBAL BOOLEAN IRC_QUIT( CLIENT *Client, REQUEST *Req )
196 assert( Client != NULL );
197 assert( Req != NULL );
199 if( Client->type != CLIENT_SERVER && Client->type != CLIENT_SERVICE )
201 /* Falsche Anzahl Parameter? */
202 if( Req->argc > 1 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
204 Conn_Close( Client->conn_id, "Client wants to quit." );
207 else return IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
211 GLOBAL BOOLEAN IRC_MOTD( CLIENT *Client, REQUEST *Req )
213 assert( Client != NULL );
214 assert( Req != NULL );
216 if( ! Check_Valid_User( Client )) return CONNECTED;
218 /* Falsche Anzahl Parameter? */
219 if( Req->argc != 0 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
221 return Show_MOTD( Client );
225 LOCAL BOOLEAN Check_Valid_User( CLIENT *Client )
227 assert( Client != NULL );
229 if( Client->type != CLIENT_USER )
231 IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
235 } /* Check_Valid_User */
238 LOCAL BOOLEAN Hello_User( CLIENT *Client )
240 Log( LOG_INFO, "User \"%s!%s@%s\" (%s) registered.", Client->nick, Client->user, Client->host, Client->name );
242 IRC_WriteStr_Client( Client, This_Server, RPL_WELCOME_MSG, Client->nick, Client->nick, Client->user, Client->host );
243 IRC_WriteStr_Client( Client, This_Server, RPL_YOURHOST_MSG, Client->nick, This_Server->host );
244 IRC_WriteStr_Client( Client, This_Server, RPL_CREATED_MSG, Client->nick );
245 IRC_WriteStr_Client( Client, This_Server, RPL_MYINFO_MSG, Client->nick, This_Server->host );
247 Client->type = CLIENT_USER;
249 return Show_MOTD( Client );
253 LOCAL BOOLEAN Show_MOTD( CLIENT *Client )
255 IRC_WriteStr_Client( Client, This_Server, RPL_MOTDSTART_MSG, Client->nick, This_Server->host );
256 IRC_WriteStr_Client( Client, This_Server, RPL_MOTD_MSG, Client->nick, "Some cool IRC server welcome message ;-)" );
257 return IRC_WriteStr_Client( Client, This_Server, RPL_ENDOFMOTD_MSG, Client->nick );