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test/java/io/Serializable/superclassDataLoss/Test.java

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   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 }
   1 /*
   2  * Copyright (c) 2000, 2017, 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  * @test
  26  * @bug 4325590
  27  * @library /lib/testlibrary
  28  * @build JarUtils Driver A B
  29  * @run driver Driver
  30  * @run main Test
  31  * @summary Verify that superclass data is not lost when incoming superclass
  32  *          descriptor is matched with local class that is not a superclass of
  33  *          the deserialized instance's class.
  34  */
  35 
  36 import java.io.*;
  37 import java.net.*;
  38 import java.nio.file.*;
  39 
  40 class MixedSuperclassStream extends ObjectInputStream {
  41     private boolean ldr12A;
  42 
  43     MixedSuperclassStream(InputStream in, boolean ldr1First) throws IOException {
  44         super(in);
  45         this.ldr12A = ldr12A;
  46     }
  47 
  48     protected Class resolveClass(ObjectStreamClass desc)
  49         throws IOException, ClassNotFoundException
  50     {
  51         // resolve A's classdesc to class != B's superclass
  52         String name = desc.getName();
  53         if (ldr12A) {
  54             if (name.equals("A")) {
  55                 return Class.forName(name, true, Test.ldr1);
  56             } else if (name.equals("B")) {
  57                 return Class.forName(name, true, Test.ldr2);
  58             }
  59         } else {
  60             if (name.equals("B")) {
  61                 return Class.forName(name, true, Test.ldr1);
  62             } else if (name.equals("A")) {
  63                 return Class.forName(name, true, Test.ldr2);
  64             }
  65         }
  66         return super.resolveClass(desc);
  67     }
  68 }
  69 
  70 public class Test {
  71 
  72     static URLClassLoader ldr1, ldr2;
  73     static {
  74         try {
  75             ldr1 = new URLClassLoader(new URL[] { new URL("file:cb1.jar") });
  76             ldr2 = new URLClassLoader(new URL[] { new URL("file:cb2.jar") });
  77         } catch (MalformedURLException ex) {
  78             throw new Error();
  79         }
  80     }
  81 
  82     public static void main(String[] args) throws Exception {
  83         Runnable a = (Runnable) Class.forName("B", true, ldr1).newInstance();
  84         a.run();
  85 
  86         ByteArrayOutputStream bout = new ByteArrayOutputStream();
  87         ObjectOutputStream oout = new ObjectOutputStream(bout);
  88         oout.writeObject(a);
  89         oout.close();
  90 
  91         test(bout, true);
  92         test(bout, false);
  93 
  94         ldr1.close();
  95         ldr2.close();
  96     }
  97 
  98     private static void test(ByteArrayOutputStream bout, boolean ldr12A) throws Exception {
  99         ByteArrayInputStream bin =
 100             new ByteArrayInputStream(bout.toByteArray());
 101         ObjectInputStream oin = new MixedSuperclassStream(bin, ldr12A);
 102         Runnable a = (Runnable) oin.readObject();
 103         a.run();
 104     }
 105 }
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