/*
* Created on Feb 1, 2007
* Created by Paul Gardner
* Copyright (C) 2007 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 63.529,40 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package com.aelitis.azureus.core.peer.cache;
import java.net.InetAddress;
import java.util.*;
import org.gudy.azureus2.core3.ipfilter.BannedIp;
import org.gudy.azureus2.core3.ipfilter.IPFilterListener;
import org.gudy.azureus2.core3.ipfilter.IpFilter;
import org.gudy.azureus2.core3.ipfilter.IpFilterManagerFactory;
import org.gudy.azureus2.core3.torrent.TOTorrent;
import org.gudy.azureus2.core3.util.AEThread2;
import org.gudy.azureus2.core3.util.Constants;
import org.gudy.azureus2.core3.util.Debug;
import org.gudy.azureus2.core3.util.HostNameToIPResolver;
import org.gudy.azureus2.core3.util.IPToHostNameResolver;
import org.gudy.azureus2.core3.util.IPToHostNameResolverListener;
import org.gudy.azureus2.core3.util.SystemTime;
import com.aelitis.azureus.core.download.DownloadManagerEnhancer;
import com.aelitis.azureus.core.download.EnhancedDownloadManager;
// import com.aelitis.azureus.core.peer.cache.cachelogic.CLCacheDiscovery;
public class
CacheDiscovery
{
private static final IpFilter ip_filter = IpFilterManagerFactory.getSingleton().getIPFilter();
private static final CacheDiscoverer[] discoverers = {
// No longer supported: new CLCacheDiscovery(),
};
private static Set<String> cache_ips = Collections.synchronizedSet(new HashSet<String>());
public static void
initialise(
final DownloadManagerEnhancer dme )
{
ip_filter.addListener(
new IPFilterListener()
{
public boolean
canIPBeBanned(
String ip )
{
return( canBan( ip ));
}
public void
IPBanned(
BannedIp ip )
{
}
public void
IPBlockedListChanged(
IpFilter filter)
{
}
public boolean
canIPBeBlocked(
String ip,
byte[] torrent_hash)
{
EnhancedDownloadManager dm = dme.getEnhancedDownload( torrent_hash );
if ( dm == null ){
return( true );
}
if ( dm.isPlatform()){
return( canBan( ip ));
}
return( true );
}
});
new AEThread2( "CacheDiscovery:ban checker", true )
{
public void
run()
{
BannedIp[] bans = ip_filter.getBannedIps();
for (int i=0;i<bans.length;i++){
String ip = bans[i].getIp();
if ( !canBan( ip )){
ip_filter.unban( ip );
}
}
}
}.start();
}
private static boolean
canBan(
final String ip )
{
if ( cache_ips.contains( ip )){
return( false );
}
try{
InetAddress address = HostNameToIPResolver.syncResolve( ip );
final String host_address = address.getHostAddress();
if ( cache_ips.contains( host_address )){
return( false );
}
// reverse lookups can be very slow
IPToHostNameResolver.addResolverRequest(
ip,
new IPToHostNameResolverListener()
{
public void
IPResolutionComplete(
String result,
boolean succeeded )
{
if ( Constants.isAzureusDomain( result )){
cache_ips.add( host_address );
ip_filter.unban( host_address, true );
}
}
});
return( true );
}catch( Throwable e ){
Debug.printStackTrace( e );
return( true );
}
}
public static CachePeer[]
lookup(
TOTorrent torrent )
{
CachePeer[] res;
if ( discoverers.length == 0 ){
res = new CachePeer[0];
}else if ( discoverers.length == 1 ){
res = discoverers[0].lookup( torrent );
}else{
List<CachePeer> result = new ArrayList<CachePeer>();
for (int i=0;i<discoverers.length;i++){
CachePeer[] peers = discoverers[i].lookup( torrent );
for (int j=0;j<peers.length;j++){
result.add( peers[i] );
}
}
res = result.toArray( new CachePeer[result.size()]);
}
for (int i=0;i<res.length;i++){
String ip = res[i].getAddress().getHostAddress();
cache_ips.add( ip );
ip_filter.unban( ip );
}
return( res );
}
public static CachePeer
categorisePeer(
byte[] peer_id,
final InetAddress ip,
final int port )
{
for (int i=0;i<discoverers.length;i++){
CachePeer cp = discoverers[i].lookup( peer_id, ip, port );
if ( cp != null ){
return( cp );
}
}
return( new CachePeerImpl( CachePeer.PT_NONE, ip, port ));
}
public static class
CachePeerImpl
implements CachePeer
{
private int type;
private InetAddress address;
private int port;
private long create_time;
private long inject_time;
private long speed_change_time;
private boolean auto_reconnect = true;
public
CachePeerImpl(
int _type,
InetAddress _address,
int _port )
{
type = _type;
address = _address;
port = _port;
create_time = SystemTime.getCurrentTime();
}
public int
getType()
{
return( type );
}
public InetAddress
getAddress()
{
return( address );
}
public int
getPort()
{
return( port );
}
public long
getCreateTime(
long now )
{
if ( create_time > now ){
create_time = now;
}
return( create_time );
}
public long
getInjectTime(
long now )
{
if ( inject_time > now ){
inject_time = now;
}
return( inject_time );
}
public void
setInjectTime(
long time )
{
inject_time = time;
}
public long
getSpeedChangeTime(
long now )
{
if ( speed_change_time > now ){
speed_change_time = now;
}
return( speed_change_time );
}
public void
setSpeedChangeTime(
long time )
{
speed_change_time = time;
}
public boolean
getAutoReconnect()
{
return( auto_reconnect );
}
public void
setAutoReconnect(
boolean auto )
{
auto_reconnect = auto;
}
public boolean
sameAs(
CachePeer other )
{
return(
getType() == other.getType() &&
getAddress().getHostAddress().equals( other.getAddress().getHostAddress()) &&
getPort() == other.getPort());
}
public String
getString()
{
return( "type=" + getType() + ",address=" + getAddress() + ",port=" + getPort());
}
}
}