- /* Fehler liefern, wenn kein lokaler Client */
- if( Client_Conn( Client ) <= NONE ) return IRC_WriteStrClient( Client, ERR_UNKNOWNCOMMAND_MSG, Client_ID( Client ), Req->command );
-
- if( Client_Type( Client ) == CLIENT_GOTPASSSERVER )
- {
- /* Verbindung soll als Server-Server-Verbindung registriert werden */
- Log( LOG_DEBUG, "Connection %d: got SERVER command (new server link) ...", Client_Conn( Client ));
-
- /* Falsche Anzahl Parameter? */
- if(( Req->argc != 2 ) && ( Req->argc != 3 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
-
- /* Ist dieser Server bei uns konfiguriert? */
- for( i = 0; i < Conf_Server_Count; i++ ) if( strcasecmp( Req->argv[0], Conf_Server[i].name ) == 0 ) break;
- if( i >= Conf_Server_Count )
- {
- /* Server ist nicht konfiguriert! */
- Log( LOG_ERR, "Connection %d: Server \"%s\" not configured here!", Client_Conn( Client ), Req->argv[0] );
- Conn_Close( Client_Conn( Client ), NULL, "Server not configured here", TRUE );
- return DISCONNECTED;
- }
- if( strcmp( Client_Password( Client ), Conf_Server[i].pwd ) != 0 )
- {
- /* Falsches Passwort */
- Log( LOG_ERR, "Connection %d: Bad password for server \"%s\"!", Client_Conn( Client ), Req->argv[0] );
- Conn_Close( Client_Conn( Client ), NULL, "Bad password", TRUE );
- return DISCONNECTED;
- }
-
- /* Ist ein Server mit dieser ID bereits registriert? */
- if( ! Client_CheckID( Client, Req->argv[0] )) return DISCONNECTED;
-
- /* Server-Strukturen fuellen ;-) */
- Client_SetID( Client, Req->argv[0] );
- Client_SetHops( Client, 1 );
- Client_SetInfo( Client, Req->argv[Req->argc - 1] );
-
- /* Meldet sich der Server bei uns an? */
- if( Req->argc == 2 )
- {
- /* Unseren SERVER- und PASS-Befehl senden */
- ok = TRUE;
- if( ! IRC_WriteStrClient( Client, "PASS %s "PASSSERVERADD, Conf_Server[i].pwd )) ok = FALSE;
- else ok = IRC_WriteStrClient( Client, "SERVER %s 1 :%s", Conf_ServerName, Conf_ServerInfo );
- if( ! ok )
- {
- Conn_Close( Client_Conn( Client ), "Unexpected server behavior!", NULL, FALSE );
- return DISCONNECTED;
- }
- Client_SetIntroducer( Client, Client );
- Client_SetToken( Client, 1 );
- }
- else Client_SetToken( Client, atoi( Req->argv[1] ));
-
- Log( LOG_NOTICE, "Server \"%s\" registered (connection %d, 1 hop - direct link).", Client_ID( Client ), Client_Conn( Client ));
-
- Client_SetType( Client, CLIENT_SERVER );
-
- /* maximalen Hop Count ermitteln */
- max_hops = 0;
- c = Client_First( );
- while( c )
- {
- if( Client_Hops( c ) > max_hops ) max_hops = Client_Hops( c );
- c = Client_Next( c );
- }
-
- /* Alle bisherigen Server dem neuen Server bekannt machen,
- * die bisherigen Server ueber den neuen informierenn */
- for( i = 0; i < ( max_hops + 1 ); i++ )
- {
- c = Client_First( );
- while( c )
- {
- if(( Client_Type( c ) == CLIENT_SERVER ) && ( c != Client ) && ( c != Client_ThisServer( )) && ( Client_Hops( c ) == i ))
- {
- if( Client_Conn( c ) > NONE )
- {
- /* Dem gefundenen Server gleich den neuen
- * Server bekannt machen */
- if( ! IRC_WriteStrClient( c, "SERVER %s %d %d :%s", Client_ID( Client ), Client_Hops( Client ) + 1, Client_MyToken( Client ), Client_Info( Client ))) return DISCONNECTED;
- }
-
- /* Den neuen Server ueber den alten informieren */
- if( ! IRC_WriteStrClientPrefix( Client, Client_Hops( c ) == 1 ? Client_ThisServer( ) : Client_Introducer( c ), "SERVER %s %d %d :%s", Client_ID( c ), Client_Hops( c ) + 1, Client_MyToken( c ), Client_Info( c ))) return DISCONNECTED;
- }
- c = Client_Next( c );
- }
- }
-
- /* alle User dem neuen Server bekannt machen */
- c = Client_First( );
- while( c )
- {
- if( Client_Type( c ) == CLIENT_USER )
- {
- /* User an neuen Server melden */
- if( ! IRC_WriteStrClient( Client, "NICK %s %d %s %s %d +%s :%s", Client_ID( c ), Client_Hops( c ) + 1, Client_User( c ), Client_Hostname( c ), Client_MyToken( Client_Introducer( c )), Client_Modes( c ), Client_Info( c ))) return DISCONNECTED;
- }
- c = Client_Next( c );
- }
-
- /* Channels dem neuen Server bekannt machen */
- chan = Channel_First( );
- while( chan )
- {
- sprintf( str, "NJOIN %s :", Channel_Name( chan ));
-
- /* alle Member suchen */
- cl2chan = Channel_FirstMember( chan );
- while( cl2chan )
- {
- cl = Channel_GetClient( cl2chan );
- assert( cl != NULL );
-
- /* Nick, ggf. mit Modes, anhaengen */
- if( str[strlen( str ) - 1] != ':' ) strcat( str, "," );
- if( strchr( Channel_UserModes( chan, cl ), 'v' )) strcat( str, "+" );
- if( strchr( Channel_UserModes( chan, cl ), 'o' )) strcat( str, "@" );
- strcat( str, Client_ID( cl ));
-
- if( strlen( str ) > ( LINE_LEN - CLIENT_NICK_LEN - 4 ))
- {
- /* Zeile senden */
- if( ! IRC_WriteStrClient( Client, str )) return DISCONNECTED;
- sprintf( str, "NJOIN %s :", Channel_Name( chan ));
- }
-
- cl2chan = Channel_NextMember( chan, cl2chan );
- }
-
- /* noch Daten da? */
- if( str[strlen( str ) - 1] != ':')
- {
- /* Ja; Also senden ... */
- if( ! IRC_WriteStrClient( Client, str )) return DISCONNECTED;
- }
-
- /* naechsten Channel suchen */
- chan = Channel_Next( chan );
- }
-
- return CONNECTED;
+ /* Return an error if this is not a local client */
+ if (Client_Conn(Client) <= NONE)
+ return IRC_WriteStrClient(Client, ERR_UNKNOWNCOMMAND_MSG,
+ Client_ID(Client), Req->command);
+
+ if (Client_Type(Client) == CLIENT_UNKNOWN && Req->argc == 1) {
+ /* Not yet registered "unknown" connection, PASS with one
+ * argument: either a regular client, service, or server
+ * using the old RFC 1459 section 4.1.1 syntax. */
+ LogDebug("Connection %d: got PASS command (RFC 1459) ...",
+ Client_Conn(Client));
+ } else if ((Client_Type(Client) == CLIENT_UNKNOWN ||
+ Client_Type(Client) == CLIENT_UNKNOWNSERVER) &&
+ (Req->argc == 3 || Req->argc == 4)) {
+ /* Not yet registered "unknown" connection or outgoing server
+ * link, PASS with three or four argument: server using the
+ * RFC 2813 section 4.1.1 syntax. */
+ LogDebug("Connection %d: got PASS command (RFC 2813, new server link) ...",
+ Client_Conn(Client));
+ } else if (Client_Type(Client) == CLIENT_UNKNOWN ||
+ Client_Type(Client) == CLIENT_UNKNOWNSERVER) {
+ /* Unregistered connection, but wrong number of arguments: */
+ return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID(Client), Req->command);
+ } else {
+ /* Registered connection, PASS command is not allowed! */
+ return IRC_WriteStrClient(Client, ERR_ALREADYREGISTRED_MSG,
+ Client_ID(Client));