/*
* Created on 1 Nov 2006
* Created by Paul Gardner
* Copyright (C) 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 63.529,40 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package com.aelitis.azureus.core.networkmanager.admin.impl;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
import javax.naming.*;
import javax.naming.directory.*;
import org.gudy.azureus2.core3.util.Debug;
import org.gudy.azureus2.core3.util.SystemTime;
import com.aelitis.azureus.core.networkmanager.admin.NetworkAdminException;
public class
NetworkAdminASNLookupImpl
{
private static final String WHOIS_ADDRESS = "whois.cymru.com";
private static final int WHOIS_PORT = 43;
private static final int TIMEOUT = 30000;
private InetAddress address;
protected
NetworkAdminASNLookupImpl(
InetAddress _address )
{
address= _address;
}
protected NetworkAdminASNImpl
lookup()
throws NetworkAdminException
{
Debug.outDiagLoggerOnly( "ASN lookup for '" + address + "'" );
return( lookupDNS( address ));
}
protected NetworkAdminASNImpl
lookupTCP(
InetAddress address )
throws NetworkAdminException
{
try{
Socket socket = new Socket();
int timeout = TIMEOUT;
long start = SystemTime.getCurrentTime();
socket.connect( new InetSocketAddress( WHOIS_ADDRESS, WHOIS_PORT ), timeout );
long end = SystemTime.getCurrentTime();
timeout -= (end - start );
if ( timeout <= 0 ){
throw( new NetworkAdminException( "Timeout on connect" ));
}else if ( timeout > TIMEOUT ){
timeout = TIMEOUT;
}
socket.setSoTimeout( timeout );
try{
OutputStream os = socket.getOutputStream();
String command = "-u -p " + address.getHostAddress() + "\r\n";
os.write( command.getBytes());
os.flush();
InputStream is = socket.getInputStream();
byte[] buffer = new byte[1024];
String result = "";
while( true ){
int len = is.read( buffer );
if ( len <= 0 ){
break;
}
result += new String( buffer, 0, len );
}
return( processResult( result ));
}finally{
socket.close();
}
}catch( Throwable e ){
throw( new NetworkAdminException( "whois connection failed", e ));
}
}
protected NetworkAdminASNImpl
lookupDNS(
InetAddress address )
throws NetworkAdminException
{
// first query for the as
byte[] bytes = address.getAddress();
String ip_query = "origin.asn.cymru.com";
for (int i=0;i<4;i++){
ip_query = ( bytes[i] & 0xff ) + "." + ip_query;
}
// "33544 | 64.71.0.0/20 | US | arin | 2006-05-04"
String ip_result = lookupDNS( ip_query );
NetworkAdminASNImpl result =
processResult(
"AS | BGP Prefix | CC | Reg | Date | AS Name" + "\n" +
ip_result + " | n/a" );
String as = result.getAS();
if ( as.length() > 0 ){
// now query for ASN
// 33544 | US | arin | 2005-01-19 | WILINE - WiLine Networks Inc.
String asn_query = "AS" + as + ".asn.cymru.com";
try{
String asn_result = lookupDNS( asn_query );
if ( asn_result != null ){
int pos = asn_result.lastIndexOf( '|' );
if ( pos != -1 ){
String asn = asn_result.substring( pos+1 ).trim();
result.setASName( asn );
}
}
}catch( Throwable e ){
Debug.outNoStack( "ASN lookup for '" + asn_query+ "' failed: " + e.getMessage());
}
}
return( result );
}
protected String
lookupDNS(
String query )
throws NetworkAdminException
{
DirContext context = null;
try{
Hashtable env = new Hashtable();
env.put("java.naming.factory.initial", "com.sun.jndi.dns.DnsContextFactory");
context = new InitialDirContext(env);
Attributes attrs = context.getAttributes( query, new String[]{ "TXT" });
NamingEnumeration n_enum = attrs.getAll();
while( n_enum.hasMoreElements()){
Attribute attr = (Attribute)n_enum.next();
NamingEnumeration n_enum2 = attr.getAll();
while( n_enum2.hasMoreElements()){
String attribute = (String)n_enum2.nextElement();
if ( attribute != null ){
attribute = attribute.trim();
if ( attribute.startsWith( "\"" )){
attribute = attribute.substring(1);
}
if ( attribute.endsWith( "\"" )){
attribute = attribute.substring(0,attribute.length()-1);
}
if ( attribute.length() > 0 ){
return( attribute );
}
}
}
}
throw( new NetworkAdminException( "DNS query returned no results" ));
}catch( Throwable e ){
throw( new NetworkAdminException( "DNS query failed", e ));
}finally{
if ( context != null ){
try{
context.close();
}catch( Throwable e ){
}
}
}
}
protected NetworkAdminASNImpl
processResult(
String result )
{
StringTokenizer lines = new StringTokenizer( result, "\n" );
int line_number = 0;
List keywords = new ArrayList();
Map map = new HashMap();
while( lines.hasMoreTokens()){
String line = lines.nextToken().trim();
line_number++;
if ( line_number > 2 ){
break;
}
StringTokenizer tok = new StringTokenizer( line, "|" );
int token_number = 0;
while( tok.hasMoreTokens()){
String token = tok.nextToken().trim();
if ( line_number == 1 ){
keywords.add( token.toLowerCase());
}else{
if ( token_number >= keywords.size()){
break;
}else{
String kw = (String)keywords.get( token_number );
map.put( kw, token );
}
}
token_number++;
}
}
String as = (String)map.get( "as" );
String asn = (String)map.get( "as name" );
String bgp_prefix = (String)map.get( "bgp prefix" );
if ( bgp_prefix != null ){
int pos = bgp_prefix.indexOf(' ');
if ( pos != -1 ){
bgp_prefix = bgp_prefix.substring(pos+1).trim();
}
if ( bgp_prefix.indexOf('/') == -1 ){
bgp_prefix = null;
}
}
return( new NetworkAdminASNImpl( as, asn, bgp_prefix ));
}
public static void
main(
String[] args )
{
try{
NetworkAdminASNLookupImpl lookup = new NetworkAdminASNLookupImpl( InetAddress.getByName( "64.71.8.82" ));
System.out.println( lookup.lookup().getString());
/*
InetAddress test = InetAddress.getByName( "255.71.15.1" );
System.out.println( test + " -> " + matchesCIDR( "255.71.0.0/20", test ));
*/
}catch( Throwable e ){
e.printStackTrace();
}
}
}
|
