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 1.7 2001/12/25 23:25:18 alex Exp $
17 * Revision 1.7 2001/12/25 23:25:18 alex
18 * - und nochmal Aenderungen am Logging ;-)
20 * Revision 1.6 2001/12/25 23:13:33 alex
21 * - Debug-Meldungen angepasst.
23 * Revision 1.5 2001/12/25 22:02:42 alex
24 * - neuer IRC-Befehl "/QUIT". Verbessertes Logging & Debug-Ausgaben.
26 * Revision 1.4 2001/12/25 19:19:30 alex
27 * - bessere Fehler-Abfragen, diverse Bugfixes.
28 * - Nicks werden nur einmal vergeben :-)
29 * - /MOTD wird unterstuetzt.
31 * Revision 1.3 2001/12/24 01:34:06 alex
32 * - USER und NICK wird nun in beliebiger Reihenfolge akzeptiert (wg. BitchX)
33 * - MOTD-Ausgabe begonnen zu implementieren.
35 * Revision 1.2 2001/12/23 21:57:16 alex
36 * - erste IRC-Befehle zu implementieren begonnen.
38 * Revision 1.1 2001/12/14 08:13:43 alex
39 * - neues Modul begonnen :-)
61 #define CONNECTED TRUE
62 #define DISCONNECTED FALSE
65 LOCAL BOOLEAN Check_Valid_User( CLIENT *Client );
67 LOCAL BOOLEAN Hello_User( CLIENT *Client );
68 LOCAL BOOLEAN Show_MOTD( CLIENT *Client );
71 GLOBAL VOID IRC_Init( VOID )
76 GLOBAL VOID IRC_Exit( VOID )
81 GLOBAL BOOLEAN IRC_WriteStr_Client( CLIENT *Client, CLIENT *Prefix, CHAR *Format, ... )
83 /* Text an Clients, lokal bzw. remote, senden. */
86 BOOLEAN ok = CONNECTED;
89 assert( Client != NULL );
90 assert( Format != NULL );
92 va_start( ap, Format );
94 if( Client->conn_id != NONE )
97 vsnprintf( buffer, 1000, Format, ap );
98 if( Prefix ) ok = Conn_WriteStr( Client->conn_id, ":%s %s", Prefix->host, buffer );
99 else ok = Conn_WriteStr( Client->conn_id, buffer );
104 Log( LOG_EMERG, "not implemented: IRC_WriteStr_Client()" );
109 } /* IRC_WriteStr_Client */
112 GLOBAL BOOLEAN IRC_PASS( CLIENT *Client, REQUEST *Req )
114 assert( Client != NULL );
115 assert( Req != NULL );
117 if( Client->type == CLIENT_UNKNOWN )
119 Log( LOG_DEBUG, "Connection %d: got PASS command ...", Client->conn_id );
120 return IRC_WriteStr_Client( Client, This_Server, ERR_UNKNOWNCOMMAND_MSG, Req->command );
122 else return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
126 GLOBAL BOOLEAN IRC_NICK( CLIENT *Client, REQUEST *Req )
130 assert( Client != NULL );
131 assert( Req != NULL );
133 if( Client->type != CLIENT_SERVER && Client->type != CLIENT_SERVICE )
135 /* Falsche Anzahl Parameter? */
136 if( Req->argc != 1 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
139 if( strlen( Req->argv[0] ) > CLIENT_NICK_LEN ) return IRC_WriteStr_Client( Client, This_Server, ERR_ERRONEUSNICKNAME_MSG, Req->argv[0] );
141 /* pruefen, ob Nick bereits vergeben */
145 if( strcasecmp( c->nick, Req->argv[0] ) == 0 )
147 /* den Nick gibt es bereits */
148 return IRC_WriteStr_Client( Client, This_Server, ERR_NICKNAMEINUSE_MSG, Req->argv[0] );
153 /* Client-Nick registrieren */
154 strcpy( Client->nick, Req->argv[0] );
156 if( Client->type != CLIENT_USER )
159 Log( LOG_DEBUG, "Connection %d: got NICK command ...", Client->conn_id );
160 if( Client->type == CLIENT_GOTUSER ) return Hello_User( Client );
161 else Client->type = CLIENT_GOTNICK;
165 else return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
169 GLOBAL BOOLEAN IRC_USER( CLIENT *Client, REQUEST *Req )
171 assert( Client != NULL );
172 assert( Req != NULL );
174 if( Client->type == CLIENT_UNKNOWN || Client->type == CLIENT_GOTNICK || Client->type == CLIENT_GOTPASS )
176 /* Falsche Anzahl Parameter? */
177 if( Req->argc != 4 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
179 strncpy( Client->user, Req->argv[0], CLIENT_USER_LEN );
180 Client->user[CLIENT_USER_LEN] = '\0';
181 strncpy( Client->name, Req->argv[3], CLIENT_NAME_LEN );
182 Client->name[CLIENT_NAME_LEN] = '\0';
184 Log( LOG_DEBUG, "Connection %d: got USER command ...", Client->conn_id );
185 if( Client->type == CLIENT_GOTNICK ) return Hello_User( Client );
186 else Client->type = CLIENT_GOTUSER;
189 else if( Client->type == CLIENT_USER || Client->type == CLIENT_SERVER || Client->type == CLIENT_SERVICE )
191 return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
193 else return IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
197 GLOBAL BOOLEAN IRC_QUIT( CLIENT *Client, REQUEST *Req )
199 assert( Client != NULL );
200 assert( Req != NULL );
202 if( Client->type != CLIENT_SERVER && Client->type != CLIENT_SERVICE )
204 /* Falsche Anzahl Parameter? */
205 if( Req->argc > 1 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
207 Conn_Close( Client->conn_id, "Client wants to quit." );
210 else return IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
214 GLOBAL BOOLEAN IRC_MOTD( CLIENT *Client, REQUEST *Req )
216 assert( Client != NULL );
217 assert( Req != NULL );
219 if( ! Check_Valid_User( Client )) return CONNECTED;
221 /* Falsche Anzahl Parameter? */
222 if( Req->argc != 0 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
224 return Show_MOTD( Client );
228 LOCAL BOOLEAN Check_Valid_User( CLIENT *Client )
230 assert( Client != NULL );
232 if( Client->type != CLIENT_USER )
234 IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
238 } /* Check_Valid_User */
241 LOCAL BOOLEAN Hello_User( CLIENT *Client )
243 Log( LOG_NOTICE, "User \"%s!%s@%s\" (%s) registered.", Client->nick, Client->user, Client->host, Client->name );
245 IRC_WriteStr_Client( Client, This_Server, RPL_WELCOME_MSG, Client->nick, Client->nick, Client->user, Client->host );
246 IRC_WriteStr_Client( Client, This_Server, RPL_YOURHOST_MSG, Client->nick, This_Server->host );
247 IRC_WriteStr_Client( Client, This_Server, RPL_CREATED_MSG, Client->nick );
248 IRC_WriteStr_Client( Client, This_Server, RPL_MYINFO_MSG, Client->nick, This_Server->host );
250 Client->type = CLIENT_USER;
252 return Show_MOTD( Client );
256 LOCAL BOOLEAN Show_MOTD( CLIENT *Client )
258 IRC_WriteStr_Client( Client, This_Server, RPL_MOTDSTART_MSG, Client->nick, This_Server->host );
259 IRC_WriteStr_Client( Client, This_Server, RPL_MOTD_MSG, Client->nick, "Some cool IRC server welcome message ;-)" );
260 return IRC_WriteStr_Client( Client, This_Server, RPL_ENDOFMOTD_MSG, Client->nick );