| /* |
| * 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; |
| } |
| } |
| } |