/* * 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; /** * 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; } 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 ); } }