/*
* Created on Sep 9, 2004
* Created by Alon Rohter
* Copyright (C) 2004, 2005, 2006 Aelitis, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package com.aelitis.azureus.core.peermanager.utils;
import java.net.InetAddress;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import org.gudy.azureus2.core3.util.Constants;
import org.gudy.azureus2.core3.util.HostNameToIPResolver;
import org.gudy.azureus2.core3.util.IPToHostNameResolver;
import com.aelitis.azureus.core.util.FeatureAvailability;
/**
* Handles peer client identification and banning.
*/
public class PeerClassifier {
public static final String CACHE_LOGIC = "CacheLogic";
/**
* Get a client description (name and version) from the given peerID byte array.
* @param peer_id peerID sent in handshake
* @return description
*/
public static String getClientDescription( byte[] peer_id ) {
return BTPeerIDByteDecoder.decode( peer_id );
}
/**
* Get a printable representation of the given raw peerID byte array,
* i.e. filter out the first 32 non-printing ascii chars.
* @param peer_id peerID sent in handshake
* @return printable peerID
*/
public static String getPrintablePeerID( byte[] peer_id ) {
return BTPeerIDByteDecoder.getPrintablePeerID(peer_id);
}
/**
* Check if the client type is allowed to connect.
* @param client_description given by getClientDescription
* @return true if allowed, false if banned
*/
public static boolean isClientTypeAllowed( String client_description ) {
//if( client_description.startsWith( "BitComet" ) ) return false;
return true;
}
public static boolean fullySupportsFE( String client_description ){
if ( FeatureAvailability.allowAllFEClients()){
return( true );
}
// some clients don't ever offer any fast-allow pieces so we reciprocate
boolean res = !(client_description.startsWith( "\u00B5" ) || client_description.startsWith( "Trans" ));
return( res );
}
private static Set platform_ips = Collections.synchronizedSet(new HashSet());
/**
* This only works for ones that have been explicitly set as AZ ips
* @param ip
* @return
*/
public static boolean
isAzureusIP(
final String ip )
{
return( platform_ips.contains( ip ));
}
public static void
setAzureusIP(
final String ip )
{
platform_ips.add( ip );
}
/**
* SYNC call!
* @param ip
* @return
*/
public static boolean
testIfAzureusIP(
final String ip )
{
try{
InetAddress address = HostNameToIPResolver.syncResolve( ip );
final String host_address = address.getHostAddress();
if ( platform_ips.contains( host_address )){
return( true );
}
String name = IPToHostNameResolver.syncResolve( ip, 10000 );
if ( Constants.isAzureusDomain( name )){
platform_ips.add( host_address );
return( true );
}
}catch( Throwable e ){
}
return( false );
}
}