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 1.5 2001/12/25 22:02:42 alex Exp $
17 * Revision 1.5 2001/12/25 22:02:42 alex
18 * - neuer IRC-Befehl "/QUIT". Verbessertes Logging & Debug-Ausgaben.
20 * Revision 1.4 2001/12/25 19:19:30 alex
21 * - bessere Fehler-Abfragen, diverse Bugfixes.
22 * - Nicks werden nur einmal vergeben :-)
23 * - /MOTD wird unterstuetzt.
25 * Revision 1.3 2001/12/24 01:34:06 alex
26 * - USER und NICK wird nun in beliebiger Reihenfolge akzeptiert (wg. BitchX)
27 * - MOTD-Ausgabe begonnen zu implementieren.
29 * Revision 1.2 2001/12/23 21:57:16 alex
30 * - erste IRC-Befehle zu implementieren begonnen.
32 * Revision 1.1 2001/12/14 08:13:43 alex
33 * - neues Modul begonnen :-)
55 #define CONNECTED TRUE
56 #define DISCONNECTED FALSE
59 LOCAL BOOLEAN Check_Valid_User( CLIENT *Client );
61 LOCAL BOOLEAN Hello_User( CLIENT *Client );
62 LOCAL BOOLEAN Show_MOTD( CLIENT *Client );
65 GLOBAL VOID IRC_Init( VOID )
70 GLOBAL VOID IRC_Exit( VOID )
75 GLOBAL BOOLEAN IRC_WriteStr_Client( CLIENT *Client, CLIENT *Prefix, CHAR *Format, ... )
77 /* Text an Clients, lokal bzw. remote, senden. */
80 BOOLEAN ok = CONNECTED;
83 assert( Client != NULL );
84 assert( Format != NULL );
86 va_start( ap, Format );
88 if( Client->conn_id != NONE )
91 vsnprintf( buffer, 1000, Format, ap );
92 if( Prefix ) ok = Conn_WriteStr( Client->conn_id, ":%s %s", Prefix->host, buffer );
93 else ok = Conn_WriteStr( Client->conn_id, buffer );
98 Log( LOG_EMERG, "not implemented: IRC_WriteStr_Client()" );
103 } /* IRC_WriteStr_Client */
106 GLOBAL BOOLEAN IRC_PASS( CLIENT *Client, REQUEST *Req )
108 assert( Client != NULL );
109 assert( Req != NULL );
111 if( Client->type == CLIENT_UNKNOWN )
113 Log( LOG_DEBUG, "Registration of connection %d: got PASS command ...", Client->conn_id );
114 return IRC_WriteStr_Client( Client, This_Server, ERR_UNKNOWNCOMMAND_MSG, Req->command );
116 else return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
120 GLOBAL BOOLEAN IRC_NICK( CLIENT *Client, REQUEST *Req )
124 assert( Client != NULL );
125 assert( Req != NULL );
127 if( Client->type != CLIENT_SERVER && Client->type != CLIENT_SERVICE )
129 /* Falsche Anzahl Parameter? */
130 if( Req->argc != 1 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
133 if( strlen( Req->argv[0] ) > CLIENT_NICK_LEN ) return IRC_WriteStr_Client( Client, This_Server, ERR_ERRONEUSNICKNAME_MSG, Req->argv[0] );
135 /* pruefen, ob Nick bereits vergeben */
139 if( strcasecmp( c->nick, Req->argv[0] ) == 0 )
141 /* den Nick gibt es bereits */
142 return IRC_WriteStr_Client( Client, This_Server, ERR_NICKNAMEINUSE_MSG, Req->argv[0] );
147 /* Client-Nick registrieren */
148 strcpy( Client->nick, Req->argv[0] );
150 if( Client->type != CLIENT_USER )
153 Log( LOG_DEBUG, "Registration of connection %d: got NICK command ...", Client->conn_id );
154 if( Client->type == CLIENT_GOTUSER ) return Hello_User( Client );
155 else Client->type = CLIENT_GOTNICK;
159 else return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
163 GLOBAL BOOLEAN IRC_USER( CLIENT *Client, REQUEST *Req )
165 assert( Client != NULL );
166 assert( Req != NULL );
168 if( Client->type == CLIENT_UNKNOWN || Client->type == CLIENT_GOTNICK || Client->type == CLIENT_GOTPASS )
170 /* Falsche Anzahl Parameter? */
171 if( Req->argc != 4 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
173 strncpy( Client->user, Req->argv[0], CLIENT_USER_LEN );
174 Client->user[CLIENT_USER_LEN] = '\0';
175 strncpy( Client->name, Req->argv[3], CLIENT_NAME_LEN );
176 Client->name[CLIENT_NAME_LEN] = '\0';
178 Log( LOG_DEBUG, "Registration of connection %d: got USER command ...", Client->conn_id );
179 if( Client->type == CLIENT_GOTNICK ) return Hello_User( Client );
180 else Client->type = CLIENT_GOTUSER;
183 else if( Client->type == CLIENT_USER || Client->type == CLIENT_SERVER || Client->type == CLIENT_SERVICE )
185 return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
187 else return IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
191 GLOBAL BOOLEAN IRC_QUIT( CLIENT *Client, REQUEST *Req )
193 assert( Client != NULL );
194 assert( Req != NULL );
196 if( Client->type != CLIENT_SERVER && Client->type != CLIENT_SERVICE )
198 /* Falsche Anzahl Parameter? */
199 if( Req->argc > 1 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
201 Conn_Close( Client->conn_id, "Client wants to quit." );
204 else return IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
208 GLOBAL BOOLEAN IRC_MOTD( CLIENT *Client, REQUEST *Req )
210 assert( Client != NULL );
211 assert( Req != NULL );
213 if( ! Check_Valid_User( Client )) return CONNECTED;
215 /* Falsche Anzahl Parameter? */
216 if( Req->argc != 0 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
218 return Show_MOTD( Client );
222 LOCAL BOOLEAN Check_Valid_User( CLIENT *Client )
224 assert( Client != NULL );
226 if( Client->type != CLIENT_USER )
228 IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
232 } /* Check_Valid_User */
235 LOCAL BOOLEAN Hello_User( CLIENT *Client )
237 Log( LOG_INFO, "User \"%s!%s@%s\" (%s) registered.", Client->nick, Client->user, Client->host, Client->name );
239 IRC_WriteStr_Client( Client, This_Server, RPL_WELCOME_MSG, Client->nick, Client->nick, Client->user, Client->host );
240 IRC_WriteStr_Client( Client, This_Server, RPL_YOURHOST_MSG, Client->nick, This_Server->host );
241 IRC_WriteStr_Client( Client, This_Server, RPL_CREATED_MSG, Client->nick );
242 IRC_WriteStr_Client( Client, This_Server, RPL_MYINFO_MSG, Client->nick, This_Server->host );
244 Client->type = CLIENT_USER;
246 return Show_MOTD( Client );
250 LOCAL BOOLEAN Show_MOTD( CLIENT *Client )
252 IRC_WriteStr_Client( Client, This_Server, RPL_MOTDSTART_MSG, Client->nick, This_Server->host );
253 IRC_WriteStr_Client( Client, This_Server, RPL_MOTD_MSG, Client->nick, "Some cool IRC server welcome message ;-)" );
254 return IRC_WriteStr_Client( Client, This_Server, RPL_ENDOFMOTD_MSG, Client->nick );