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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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test/jdk/java/rmi/server/useCustomRef/UseCustomRef.java Normal file
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/*
* Copyright (c) 1998, 2024, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
* @bug 4155894
*
* @summary remote references can't be downloaded
* @author Ann Wollrath
*
* test currently needs RMISecurityManager because of
* 4180392
*
* @library ../../testlibrary
* @modules java.rmi/sun.rmi.registry
* java.rmi/sun.rmi.server
* java.rmi/sun.rmi.transport
* java.rmi/sun.rmi.transport.tcp
* @build TestLibrary Ping UseCustomRef_Stub UseCustomRef_Skel
* @run main/othervm/timeout=120 UseCustomRef
*
* This test was failing to run because the synthetic access
* control context used by the application class loader to find and define
* CustomServerRef does not have accessClassInPackage.sun.rmi.server runtime
* permission necessary to load its superclass sun.rmi.server.UnicastServerRef,
* even though this test's code is granted that permission in its policy file.
* That bug number is 4256530
*/
import java.io.*;
import java.rmi.*;
import java.rmi.server.*;
import java.rmi.registry.*;
import sun.rmi.transport.LiveRef;
public class UseCustomRef
extends RemoteServer
implements Ping
{
public UseCustomRef() throws RemoteException {
exportObject();
}
public void exportObject() throws RemoteException {
ref = new CustomServerRef(new LiveRef(0));
((ServerRef) ref).exportObject(this, null);
}
public RemoteRef getRef() { return ref; }
public void ping() {}
public void receiveAndPing(Ping p) throws RemoteException {
p.ping();
}
public static void main(String[] args) {
Ping obj = null;
Registry registry = null;
try {
/*
* create registry
*/
System.err.println("creating Registry...");
registry = TestLibrary.createRegistryOnEphemeralPort();
int port = TestLibrary.getRegistryPort(registry);
/*
* create object with custom ref and bind in registry
*/
System.err.println("creating UseCustomRef...");
UseCustomRef cr = new UseCustomRef();
RemoteRef ref = cr.getRef();
if (!(ref instanceof CustomServerRef)) {
TestLibrary.bomb("test failed: reference not " +
"instanceof CustomServerRef");
}
String name = "//:" + port + "/UseCustomRef";
// String name = "UseCustomRef";
System.err.println("binding object in registry...");
Naming.rebind(name, cr);
/*
* look up object and invoke its ping method
*/
System.err.println("ping object...");
obj = (Ping) Naming.lookup(name);
obj.ping();
/*
* pass object with custom ref in remote call
*/
System.err.println("pass object in remote call...");
obj.receiveAndPing(cr);
/*
* write remote object with custom ref to output stream
*/
System.err.println("writing remote object to stream...");
ByteArrayOutputStream bout = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(bout);
out.writeObject(cr);
out.flush();
out.close();
/*
* read back remote object from output stream
*/
System.err.println("reading remote object from stream...");
ObjectInputStream in = new ObjectInputStream(
new ByteArrayInputStream(bout.toByteArray()));
cr = (UseCustomRef) in.readObject();
/*
* re-export object and ping
*/
System.err.println("re-export object read...");
cr.exportObject();
System.err.println("look up object again...");
Naming.rebind(name, cr);
System.err.println("ping object read...");
obj = (Ping) Naming.lookup(name);
obj.ping();
System.err.println("TEST PASSED");
Naming.unbind(name);
cr = null;
} catch (Exception e) {
TestLibrary.bomb("test failed with exception: ", e);
} finally {
TestLibrary.unexport(obj);
TestLibrary.unexport(registry);
registry = null;
obj = null;
}
}
public static class CustomServerRef
extends sun.rmi.server.UnicastServerRef
{
public CustomServerRef() {}
public CustomServerRef(LiveRef ref) {
super(ref);
}
/*****
public CustomServerRef(int port,
RMIClientSocketFactory csf,
RMIServerSocketFactory ssf)
{
super (new LiveRef(port, csf, ssf));
}
*****/
public String getRefClass(ObjectOutput out) {
return "";
}
protected void unmarshalCustomCallData(ObjectInput in)
throws IOException, ClassNotFoundException
{
System.err.println("unmarshalling call data...");
String s = (String) (in.readObject());
System.err.println(s);
}
protected RemoteRef getClientRef() {
return new CustomRef(ref);
}
}
public static class CustomRef extends sun.rmi.server.UnicastRef {
public CustomRef() {
}
public CustomRef(sun.rmi.transport.LiveRef ref) {
super(ref);
}
protected void marshalCustomCallData(ObjectOutput out)
throws IOException
{
// this custom data ensures that a custom server
// ref has written the relevant information.
System.err.println("marshalling call data...");
out.writeObject("hello there.");
}
public String getRefClass(ObjectOutput out) {
return "";
}
}
}