+/*
+ * ngIRCd -- The Next Generation IRC Daemon
+ * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
+ *
+ * Dieses Programm ist freie Software. Sie koennen es unter den Bedingungen
+ * der GNU General Public License (GPL), wie von der Free Software Foundation
+ * herausgegeben, weitergeben und/oder modifizieren, entweder unter Version 2
+ * der Lizenz oder (wenn Sie es wuenschen) jeder spaeteren Version.
+ * Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
+ * der an ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
+ *
+ * $Id: irc-server.c,v 1.1 2002/03/03 17:15:11 alex Exp $
+ *
+ * irc-server.c: IRC-Befehle fuer Server-Links
+ *
+ * $Log: irc-server.c,v $
+ * Revision 1.1 2002/03/03 17:15:11 alex
+ * - Source in weitere Module fuer IRC-Befehle aufgesplitted.
+ *
+ */
+
+
+#include <portab.h>
+#include "global.h"
+
+#include <imp.h>
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "conf.h"
+#include "irc-write.h"
+#include "log.h"
+#include "messages.h"
+
+#include <exp.h>
+#include "irc-server.h"
+
+
+GLOBAL BOOLEAN IRC_SERVER( CLIENT *Client, REQUEST *Req )
+{
+ CHAR str[LINE_LEN], *ptr;
+ CLIENT *from, *c, *cl;
+ CL2CHAN *cl2chan;
+ INT max_hops, i;
+ CHANNEL *chan;
+ BOOLEAN ok;
+
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ /* 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;
+ }
+ else if( Client_Type( Client ) == CLIENT_SERVER )
+ {
+ /* Neuer Server wird im Netz angekuendigt */
+
+ /* Falsche Anzahl Parameter? */
+ if( Req->argc != 4 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+
+ /* Ist ein Server mit dieser ID bereits registriert? */
+ if( ! Client_CheckID( Client, Req->argv[0] )) return DISCONNECTED;
+
+ /* Ueberfluessige Hostnamen aus Info-Text entfernen */
+ ptr = strchr( Req->argv[3] + 2, '[' );
+ if( ! ptr ) ptr = Req->argv[3];
+
+ from = Client_GetFromID( Req->prefix );
+ if( ! from )
+ {
+ /* Hm, Server, der diesen einfuehrt, ist nicht bekannt!? */
+ Log( LOG_ALERT, "Unknown ID in prefix of SERVER: \"%s\"! (on connection %d)", Req->prefix, Client_Conn( Client ));
+ Conn_Close( Client_Conn( Client ), NULL, "Unknown ID in prefix of SERVER", TRUE );
+ return DISCONNECTED;
+ }
+
+ /* Neue Client-Struktur anlegen */
+ c = Client_NewRemoteServer( Client, Req->argv[0], from, atoi( Req->argv[1] ), atoi( Req->argv[2] ), ptr, TRUE );
+ if( ! c )
+ {
+ /* Neue Client-Struktur konnte nicht angelegt werden */
+ Log( LOG_ALERT, "Can't create client structure for server! (on connection %d)", Client_Conn( Client ));
+ Conn_Close( Client_Conn( Client ), NULL, "Can't allocate client structure for remote server", TRUE );
+ return DISCONNECTED;
+ }
+
+ /* Log-Meldung zusammenbauen und ausgeben */
+ if(( Client_Hops( c ) > 1 ) && ( Req->prefix[0] )) sprintf( str, "connected to %s, ", Client_ID( from ));
+ else strcpy( str, "" );
+ Log( LOG_NOTICE, "Server \"%s\" registered (via %s, %s%d hop%s).", Client_ID( c ), Client_ID( Client ), str, Client_Hops( c ), Client_Hops( c ) > 1 ? "s": "" );
+
+ /* Andere Server informieren */
+ IRC_WriteStrServersPrefix( Client, from, "SERVER %s %d %d :%s", Client_ID( c ), Client_Hops( c ) + 1, Client_MyToken( c ), Client_Info( c ));
+
+ return CONNECTED;
+ }
+ else return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+} /* IRC_SERVER */
+
+
+GLOBAL BOOLEAN IRC_NJOIN( CLIENT *Client, REQUEST *Req )
+{
+ CHAR *channame, *ptr, modes[8];
+ BOOLEAN is_op, is_voiced;
+ CHANNEL *chan;
+ CLIENT *c;
+
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ if( Client_Type( Client ) != CLIENT_SERVER ) return IRC_WriteStrClient( Client, ERR_NOTREGISTEREDSERVER_MSG, Client_ID( Client ));
+
+ /* Falsche Anzahl Parameter? */
+ if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+
+ channame = Req->argv[0];
+ ptr = strtok( Req->argv[1], "," );
+ while( ptr )
+ {
+ is_op = is_voiced = FALSE;
+
+ /* Prefixe abschneiden */
+ while(( *ptr == '@' ) || ( *ptr == '+' ))
+ {
+ if( *ptr == '@' ) is_op = TRUE;
+ if( *ptr == '+' ) is_voiced = TRUE;
+ ptr++;
+ }
+
+ c = Client_GetFromID( ptr );
+ if( c )
+ {
+ Channel_Join( c, channame );
+ chan = Channel_Search( channame );
+ assert( chan != NULL );
+
+ if( is_op ) Channel_UserModeAdd( chan, c, 'o' );
+ if( is_voiced ) Channel_UserModeAdd( chan, c, 'v' );
+
+ /* im Channel bekannt machen */
+ IRC_WriteStrChannelPrefix( Client, chan, c, FALSE, "JOIN :%s", channame );
+
+ /* Channel-User-Modes setzen */
+ strcpy( modes, Channel_UserModes( chan, c ));
+ if( modes[0] )
+ {
+ /* Modes im Channel bekannt machen */
+ IRC_WriteStrChannelPrefix( Client, chan, Client, FALSE, "MODE %s +%s %s", channame, modes, Client_ID( c ));
+ }
+ }
+ else Log( LOG_ERR, "Got NJOIN for unknown nick \"%s\" for channel \"%s\"!", ptr, channame );
+
+ /* naechsten Nick suchen */
+ ptr = strtok( NULL, "," );
+ }
+
+ /* an andere Server weiterleiten */
+ IRC_WriteStrServersPrefix( Client, Client_ThisServer( ), "NJOIN %s :%s", Req->argv[0], Req->argv[1] );
+
+ return CONNECTED;
+} /* IRC_NJOIN */
+
+
+GLOBAL BOOLEAN IRC_SQUIT( CLIENT *Client, REQUEST *Req )
+{
+ CLIENT *target;
+ CHAR msg[LINE_LEN + 64];
+
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ /* SQUIT ist nur fuer Server erlaubt */
+ if( Client_Type( Client ) != CLIENT_SERVER ) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
+
+ /* Falsche Anzahl Parameter? */
+ if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+
+ Log( LOG_DEBUG, "Got SQUIT from %s for \"%s\": \"%s\" ...", Client_ID( Client ), Req->argv[0], Req->argv[1] );
+
+ /* SQUIT an alle Server weiterleiten */
+ IRC_WriteStrServers( Client, "SQUIT %s :%s", Req->argv[0], Req->argv[1] );
+
+ target = Client_GetFromID( Req->argv[0] );
+ if( ! target )
+ {
+ Log( LOG_ERR, "Got SQUIT from %s for unknown server \"%s\"!?", Client_ID( Client ), Req->argv[0] );
+ return CONNECTED;
+ }
+
+ if( Req->argv[1][0] )
+ {
+ if( strlen( Req->argv[1] ) > LINE_LEN ) Req->argv[1][LINE_LEN] = '\0';
+ sprintf( msg, "%s (SQUIT from %s).", Req->argv[1], Client_ID( Client ));
+ }
+ else sprintf( msg, "Got SQUIT from %s.", Client_ID( Client ));
+
+ if( Client_Conn( target ) > NONE )
+ {
+ /* dieser Server hat die Connection */
+ if( Req->argv[1][0] ) Conn_Close( Client_Conn( target ), msg, Req->argv[1], TRUE );
+ else Conn_Close( Client_Conn( target ), msg, NULL, TRUE );
+ return DISCONNECTED;
+ }
+ else
+ {
+ /* Verbindung hielt anderer Server */
+ Client_Destroy( target, msg, Req->argv[1] );
+ return CONNECTED;
+ }
+} /* IRC_SQUIT */
+
+
+/* -eof- */
projects / ngircd-alex.git / commitdiff