org.jboss.remoting.serialization.impl.java.MarshalledValueOutputStream Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.remoting.serialization.impl.java;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.rmi.Remote;
import java.rmi.server.RemoteObject;
import java.rmi.server.RemoteStub;
import java.security.AccessController;
import java.security.PrivilegedAction;
/**
* An ObjectOutputStream subclass used by the MarshalledValue class to
* ensure the classes and proxies are loaded using the thread context
* class loader. Currently this does not do anything as neither class or
* proxy annotations are used.
*
* @author [email protected]
* @author [email protected] - refactored packages only
* @version $Revision: 566 $
*/
public class MarshalledValueOutputStream
extends ObjectOutputStream
{
/**
* Creates a new instance of MarshalledValueOutputStream
* If there is a security manager installed, this method requires a
* SerializablePermission("enableSubstitution") permission to ensure it's
* ok to enable the stream to do replacement of objects in the stream.
*/
public MarshalledValueOutputStream(OutputStream os) throws IOException
{
super(os);
EnableReplaceObjectAction.enableReplaceObject(this);
}
/**
* @throws java.io.IOException Any exception thrown by the underlying OutputStream.
*/
protected void annotateClass(Class cl) throws IOException
{
super.annotateClass(cl);
}
/**
* @throws java.io.IOException Any exception thrown by the underlying OutputStream.
*/
protected void annotateProxyClass(Class cl) throws IOException
{
super.annotateProxyClass(cl);
}
/**
* Override replaceObject to check for Remote objects that are
* not RemoteStubs.
*/
protected Object replaceObject(Object obj) throws IOException
{
if((obj instanceof Remote) && !(obj instanceof RemoteStub))
{
Remote remote = (Remote) obj;
try
{
obj = RemoteObject.toStub(remote);
}
catch(IOException ignore)
{
// Let the Serialization layer try with the orignal obj
}
}
return obj;
}
private static class EnableReplaceObjectAction implements PrivilegedAction
{
MarshalledValueOutputStream os;
EnableReplaceObjectAction(MarshalledValueOutputStream os)
{
this.os = os;
}
public Object run()
{
os.enableReplaceObject(true);
return null;
}
static void enableReplaceObject(MarshalledValueOutputStream os)
{
EnableReplaceObjectAction action = new EnableReplaceObjectAction(os);
AccessController.doPrivileged(action);
}
}
}