/*
* Created on Apr 26, 2005
* Created by Alon Rohter
* Copyright (C) 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.peerdb;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Arrays;
import org.gudy.azureus2.core3.peer.PEPeerSource;
import org.gudy.azureus2.plugins.peers.PeerDescriptor;
/**
* Represents a peer item, unique by ip address + port combo.
* NOTE: Overrides equals().
*/
public class PeerItem implements PeerDescriptor {
private final byte[] address;
private final short udp_port;
private final short tcp_port;
private final byte source;
private final int hashcode;
private final byte handshake;
private final byte crypto_level;
private final short up_speed;
protected PeerItem( String _address, int _tcp_port, byte _source, byte _handshake, int _udp_port, byte _crypto_level, int _up_speed ) {
byte[] raw;
try{
//see if we can resolve the address into a compact raw IPv4/6 byte array (4 or 16 bytes)
InetAddress ip = InetAddress.getByName( _address );
raw = ip.getAddress();
}
catch( UnknownHostException e ) {
//not a standard IPv4/6 address, so just use the full string bytes
raw = _address.getBytes();
}
address = raw;
tcp_port = (short)_tcp_port;
udp_port = (short)_udp_port;
source = _source;
hashcode = new String( address ).hashCode() + tcp_port;
handshake = _handshake;
crypto_level = _crypto_level;
up_speed = (short)_up_speed;
}
protected PeerItem( byte[] _serialization, byte _source, byte _handshake, int _udp_port ) throws Exception{
if ( _serialization.length < 6 || _serialization.length > 32){
throw( new Exception( "PeerItem: invalid serialisation length - " + _serialization.length ));
}
//extract address and port
address = new byte[ _serialization.length -2 ];
System.arraycopy( _serialization, 0, address, 0, _serialization.length -2 );
byte p0 = _serialization[ _serialization.length -2 ];
byte p1 = _serialization[ _serialization.length -1 ];
tcp_port = (short)((p1 & 0xFF) + ((p0 & 0xFF) << 8));
source = _source;
hashcode = new String( address ).hashCode() + tcp_port;
handshake = _handshake;
udp_port = (short)_udp_port;
crypto_level = PeerItemFactory.CRYPTO_LEVEL_1; // TODO: serialise this...
up_speed = 0; // TODO:...
}
public byte[] getSerialization() {
//combine address and port bytes into one
byte[] full_address = new byte[ address.length +2 ];
System.arraycopy( address, 0, full_address, 0, address.length );
full_address[ address.length ] = (byte)(tcp_port >> 8);
full_address[ address.length +1 ] = (byte)(tcp_port & 0xff);
return full_address;
}
public String getAddressString() {
try{
//see if it's an IPv4/6 address (4 or 16 bytes)
return InetAddress.getByAddress( address ).getHostAddress();
}
catch( UnknownHostException e ) {
//not a standard IPv4/6 address, so just return as full string
return new String( address );
}
}
public String
getIP()
{
return( getAddressString());
}
public int getTCPPort() { return tcp_port&0xffff; }
public int getUDPPort() { return udp_port&0xffff; }
public byte getSource() { return source; }
public String getPeerSource() { return convertSourceString( source ); }
public byte getHandshakeType() { return handshake; }
public byte getCryptoLevel() { return crypto_level; }
public boolean useCrypto() { return( crypto_level != PeerItemFactory.HANDSHAKE_TYPE_PLAIN ); }
public boolean equals( Object obj ) {
if( this == obj ) return true;
if( obj != null && obj instanceof PeerItem ) {
PeerItem other = (PeerItem)obj;
if( this.tcp_port == other.tcp_port &&
this.udp_port == other.udp_port &&
this.handshake == other.handshake &&
Arrays.equals( this.address, other.address ) ) return true;
}
return false;
}
public int hashCode() { return hashcode; }
public static String convertSourceString( byte source_id ) {
//we use an int to store the source text string as this class is supposed to be lightweight
switch( source_id ) {
case PeerItemFactory.PEER_SOURCE_TRACKER: return PEPeerSource.PS_BT_TRACKER;
case PeerItemFactory.PEER_SOURCE_DHT: return PEPeerSource.PS_DHT;
case PeerItemFactory.PEER_SOURCE_PEER_EXCHANGE: return PEPeerSource.PS_OTHER_PEER;
case PeerItemFactory.PEER_SOURCE_PLUGIN: return PEPeerSource.PS_PLUGIN;
case PeerItemFactory.PEER_SOURCE_INCOMING: return PEPeerSource.PS_INCOMING;
default: return "<unknown>";
}
}
public static byte convertSourceID( String source ) {
if( source.equals( PEPeerSource.PS_BT_TRACKER ) ) return PeerItemFactory.PEER_SOURCE_TRACKER;
if( source.equals( PEPeerSource.PS_DHT ) ) return PeerItemFactory.PEER_SOURCE_DHT;
if( source.equals( PEPeerSource.PS_OTHER_PEER ) ) return PeerItemFactory.PEER_SOURCE_PEER_EXCHANGE;
if( source.equals( PEPeerSource.PS_PLUGIN ) ) return PeerItemFactory.PEER_SOURCE_PLUGIN;
if( source.equals( PEPeerSource.PS_INCOMING ) ) return PeerItemFactory.PEER_SOURCE_INCOMING;
return -1;
}
public boolean isIPv4() {
return address.length == 4;
}
/*
public String toString() {
return org.gudy.azureus2.core3.util.ByteFormatter.encodeString(this.address) + ":" + this.tcp_port;
}
*/
}