1 /*

     2  * Copyright (c) 2002, 2010, 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 4765255

    26  * @summary Verify proper functioning of package equality checks used to

    27  *          determine accessibility of superclass constructor and inherited

    28  *          writeReplace/readResolve methods.

    29  */

    30 

    31 import java.io.*;

    32 import java.net.*;

    33 

    34 public class Test {

    35 

    36     static Class bcl;

    37     static Class dcl;

    38 

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

    40         ClassLoader ldr =

    41             new URLClassLoader(new URL[]{ new URL("file:foo.jar") },

    42                                Test.class.getClassLoader());

    43         bcl = Class.forName("B", true, ldr);

    44         dcl = Class.forName("D", true, ldr);

    45 

    46         Object b = bcl.newInstance();

    47         try {

    48             swizzle(b);

    49             throw new Error("expected InvalidClassException for class B");

    50         } catch (InvalidClassException e) {

    51             System.out.println("caught " + e);

    52             e.printStackTrace();

    53         }

    54         if (A.packagePrivateConstructorInvoked) {

    55             throw new Error("package private constructor of A invoked");

    56         }

    57 

    58         Object d = dcl.newInstance();

    59         swizzle(d);

    60     }

    61 

    62     static void swizzle(Object obj) throws Exception {

    63         ByteArrayOutputStream bout = new ByteArrayOutputStream();

    64         ObjectOutputStream oout = new ObjectOutputStream(bout);

    65         oout.writeObject(obj);

    66         oout.close();

    67         ByteArrayInputStream bin =

    68             new ByteArrayInputStream(bout.toByteArray());

    69         new TestObjectInputStream(bin).readObject();

    70     }

    71 }

    72 

    73 class TestObjectInputStream extends ObjectInputStream {

    74     TestObjectInputStream(InputStream in) throws IOException {

    75         super(in);

    76     }

    77 

    78     protected Class resolveClass(ObjectStreamClass desc)

    79         throws IOException, ClassNotFoundException

    80     {

    81         String n = desc.getName();

    82         if (n.equals("B")) {

    83             return Test.bcl;

    84         } else if (n.equals("D")) {

    85             return Test.dcl;

    86         } else {

    87             return super.resolveClass(desc);

    88         }

    89     }

    90 }