1 /*
   2  * Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @bug 4325590
  26  * @summary Verify that superclass data is not lost when incoming superclass
  27  *          descriptor is matched with local class that is not a superclass of
  28  *          the deserialized instance's class.
  29  */
  30 
  31 import java.io.*;
  32 import java.net.*;
  33 
  34 class MixedSuperclassStream extends ObjectInputStream {
  35     MixedSuperclassStream(InputStream in) throws IOException { super(in); }
  36 
  37     protected Class resolveClass(ObjectStreamClass desc)
  38         throws IOException, ClassNotFoundException
  39     {
  40         // resolve A's classdesc to class != B's superclass
  41         String name = desc.getName();
  42         if (name.equals("A")) {
  43             return Class.forName(name, true, Test.ldr1);
  44         } else if (name.equals("B")) {
  45             return Class.forName(name, true, Test.ldr2);
  46         } else {
  47             return super.resolveClass(desc);
  48         }
  49     }
  50 }
  51 
  52 public class Test {
  53 
  54     static URLClassLoader ldr1, ldr2;
  55     static {
  56         try {
  57             ldr1 = new URLClassLoader(new URL[] { new URL("file:cb1.jar") });
  58             ldr2 = new URLClassLoader(new URL[] { new URL("file:cb2.jar") });
  59         } catch (MalformedURLException ex) {
  60             throw new Error();
  61         }
  62     }
  63 
  64     public static void main(String[] args) throws Exception {
  65         Runnable a = (Runnable) Class.forName("B", true, ldr1).newInstance();
  66         a.run();
  67 
  68         ByteArrayOutputStream bout = new ByteArrayOutputStream();
  69         ObjectOutputStream oout = new ObjectOutputStream(bout);
  70         oout.writeObject(a);
  71         oout.close();
  72 
  73         ByteArrayInputStream bin =
  74             new ByteArrayInputStream(bout.toByteArray());
  75         ObjectInputStream oin = new MixedSuperclassStream(bin);
  76         a = (Runnable) oin.readObject();
  77         a.run();
  78     }
  79 }