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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.qpid.server.jmx;
import java.io.IOException;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.rmi.server.RMIServerSocketFactory;
/**
* Custom RMIServerSocketFactory class, used to prevent updates to the RMI registry.
* Supplied to the registry at creation, this will prevent RMI-based operations on the
* registry such as attempting to bind a new object, thereby securing it from tampering.
* This is accomplished by always returning null when attempting to determine the address
* of the caller, thus ensuring the registry will refuse the attempt. Calls to bind etc
* made using the object reference will not be affected and continue to operate normally.
*/
class CustomRMIServerSocketFactory implements RMIServerSocketFactory
{
public ServerSocket createServerSocket(int port) throws IOException
{
return new NoLocalAddressServerSocket(port);
}
private static class NoLocalAddressServerSocket extends ServerSocket
{
NoLocalAddressServerSocket(int port) throws IOException
{
super(port);
}
@Override
public Socket accept() throws IOException
{
Socket s = new NoLocalAddressSocket();
super.implAccept(s);
return s;
}
}
private static class NoLocalAddressSocket extends Socket
{
@Override
public InetAddress getInetAddress()
{
return null;
}
}
}
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