1 /*
   2  * Copyright (c) 2000, 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 /* @test
  25  * @summary Verifies basic correct functioning of proxy serialization.
  26  */
  27 
  28 import java.io.*;
  29 import java.lang.reflect.*;
  30 import java.util.Random;
  31 
  32 // proxy interfaces
  33 interface Foo { int foo(); }
  34 interface Bar { float bar(); }
  35 
  36 // dummy invocation handler
  37 class Handler implements InvocationHandler, Serializable {
  38 
  39     static Method fooMethod, barMethod;
  40     static {
  41         try {
  42             fooMethod = Foo.class.getDeclaredMethod("foo", new Class[0]);
  43             barMethod = Bar.class.getDeclaredMethod("bar", new Class[0]);
  44         } catch (NoSuchMethodException ex) {
  45             throw new Error();
  46         }
  47     }
  48 
  49     int foo;
  50     float bar;
  51 
  52     Handler(int foo, float bar) {
  53         this.foo = foo;
  54         this.bar = bar;
  55     }
  56 
  57     public Object invoke(Object proxy, Method method, Object[] args)
  58         throws Throwable
  59     {
  60         if (method.equals(fooMethod)) {
  61             return new Integer(foo);
  62         } else if (method.equals(barMethod)) {
  63             return new Float(bar);
  64         } else {
  65             throw new UnsupportedOperationException();
  66         }
  67     }
  68 }
  69 
  70 // ObjectInputStream incapable of resolving proxy classes
  71 class ProxyBlindInputStream extends ObjectInputStream {
  72 
  73     ProxyBlindInputStream(InputStream in) throws IOException { super(in); }
  74 
  75     protected Class resolveProxyClass(String[] interfaces)
  76         throws IOException, ClassNotFoundException
  77     {
  78         throw new ClassNotFoundException();
  79     }
  80 }
  81 
  82 public class Basic {
  83     public static void main(String[] args) throws Exception {
  84         ClassLoader loader = Basic.class.getClassLoader();
  85         Class[] interfaces = new Class[] { Foo.class, Bar.class };
  86         Random rand = new Random();
  87         int foo = rand.nextInt();
  88         float bar = rand.nextFloat();
  89         ObjectOutputStream oout;
  90         ObjectInputStream oin;
  91         ByteArrayOutputStream bout;
  92         Object proxy;
  93 
  94 
  95         // test simple proxy write + read
  96         bout = new ByteArrayOutputStream();
  97         oout = new ObjectOutputStream(bout);
  98         oout.writeObject(Proxy.newProxyInstance(
  99             loader, interfaces, new Handler(foo, bar)));
 100         oout.close();
 101 
 102         oin = new ObjectInputStream(
 103             new ByteArrayInputStream(bout.toByteArray()));
 104         proxy = oin.readObject();
 105         if ((((Foo) proxy).foo() != foo) || (((Bar) proxy).bar() != bar)) {
 106             throw new Error();
 107         }
 108 
 109 
 110         // test missing proxy class ClassNotFoundException
 111         oin = new ProxyBlindInputStream(
 112             new ByteArrayInputStream(bout.toByteArray()));
 113         try {
 114             oin.readObject();
 115             throw new Error();
 116         } catch (ClassNotFoundException ex) {
 117         }
 118     }
 119 }