1 files changed, 68 insertions, 0 deletions
diff --git a/java/broker-plugins/management-jmx/src/main/java/org/apache/qpid/server/jmx/CustomRMIServerSocketFactory.java b/java/broker-plugins/management-jmx/src/main/java/org/apache/qpid/server/jmx/CustomRMIServerSocketFactory.java
new file mode 100644
index 0000000000..b7aab78e45
--- /dev/null
+++ b/java/broker-plugins/management-jmx/src/main/java/org/apache/qpid/server/jmx/CustomRMIServerSocketFactory.java
@@ -0,0 +1,68 @@
+/*
+ * 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;
+        }
+    }
+}
+\ No newline at end of file