jdk/test/java/rmi/dgc/dgcImplInsulation/DGCImplInsulation.java

/* 
 * Copyright 2001-2003 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

/* @test
 * @bug 4465315
 * @summary The RMI runtime's server-side DGC implementation object should
 * not be exported with the arbitrary access control context that was in
 * effect when it gets lazily created.  For example, calls to it should not
 * fail due to the "accept" SocketPermission check simply because of the
 * access control context that it was exported with.
 * @author Peter Jones
 *
 * @library ../../testlibrary
 * @build TestLibrary
 * @build DGCImplInsulation
 * @build DGCImplInsulation_Stub
 * @run main/othervm/policy=security.policy DGCImplInsulation
 */

import java.lang.ref.Reference;
import java.lang.ref.ReferenceQueue;
import java.lang.ref.WeakReference;
import java.net.SocketPermission;
import java.rmi.MarshalledObject;
import java.rmi.Remote;
import java.rmi.server.UnicastRemoteObject;
import java.security.AccessControlContext;
import java.security.CodeSource;
import java.security.Permissions;
import java.security.PrivilegedExceptionAction;
import java.security.ProtectionDomain;
import java.security.cert.Certificate;

public class DGCImplInsulation implements java.rmi.Remote {

    private static final long TIMEOUT = 5000;

    public static void main(String[] args) throws Exception {

	TestLibrary.suggestSecurityManager(null);

	Permissions perms = new Permissions();
	perms.add(new SocketPermission("*:1024-", "listen"));
	AccessControlContext acc =
	    new AccessControlContext(new ProtectionDomain[] {
		new ProtectionDomain(
		    new CodeSource(null, (Certificate[]) null), perms) });

	Remote impl = new DGCImplInsulation();;

	try {
	    Remote stub = (Remote) java.security.AccessController.doPrivileged(
		new ExportAction(impl));
	    System.err.println("exported remote object; local stub: " + stub);

	    MarshalledObject mobj = new MarshalledObject(stub);
	    stub = (Remote) mobj.get();
	    System.err.println("marshalled/unmarshalled stub: " + stub);

	    ReferenceQueue refQueue = new ReferenceQueue();
	    Reference weakRef = new WeakReference(impl, refQueue);
	    impl = null;
	    System.gc();
	    if (refQueue.remove(TIMEOUT) == weakRef) {
		throw new RuntimeException(
		    "TEST FAILED: remote object garbage collected");
	    } else {
		System.err.println("TEST PASSED");
		stub = null;
		System.gc();
		Thread.sleep(2000);
		System.gc();
	    }
	} finally {
	    try {
		UnicastRemoteObject.unexportObject(impl, true);
	    } catch (Exception e) {
	    }
	}
    }

    private static class ExportAction implements PrivilegedExceptionAction {
	private final Remote impl;
	ExportAction(Remote impl) {
	    this.impl = impl;
	}
	public Object run() throws Exception {
	    return UnicastRemoteObject.exportObject(impl);
	}
    }
}