122 lines
3.7 KiB
Java
122 lines
3.7 KiB
Java
/*
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* Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @summary Verifies basic correct functioning of proxy serialization.
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* @key randomness
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*/
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import java.io.*;
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import java.lang.reflect.*;
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import java.util.Random;
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// proxy interfaces
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interface Foo { int foo(); }
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interface Bar { float bar(); }
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// dummy invocation handler
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class Handler implements InvocationHandler, Serializable {
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private static final long serialVersionUID = 1L;
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static Method fooMethod, barMethod;
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static {
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try {
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fooMethod = Foo.class.getDeclaredMethod("foo", new Class<?>[0]);
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barMethod = Bar.class.getDeclaredMethod("bar", new Class<?>[0]);
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} catch (NoSuchMethodException ex) {
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throw new Error();
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}
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}
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int foo;
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float bar;
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Handler(int foo, float bar) {
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this.foo = foo;
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this.bar = bar;
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}
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public Object invoke(Object proxy, Method method, Object[] args)
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throws Throwable
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{
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if (method.equals(fooMethod)) {
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return foo;
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} else if (method.equals(barMethod)) {
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return bar;
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} else {
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throw new UnsupportedOperationException();
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}
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}
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}
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// ObjectInputStream incapable of resolving proxy classes
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class ProxyBlindInputStream extends ObjectInputStream {
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ProxyBlindInputStream(InputStream in) throws IOException { super(in); }
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protected Class<?> resolveProxyClass(String[] interfaces)
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throws IOException, ClassNotFoundException
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{
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throw new ClassNotFoundException();
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}
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}
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public class Basic {
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public static void main(String[] args) throws Exception {
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ClassLoader loader = Basic.class.getClassLoader();
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Class<?>[] interfaces = { Foo.class, Bar.class };
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Random rand = new Random();
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int foo = rand.nextInt();
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float bar = rand.nextFloat();
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ObjectOutputStream oout;
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ObjectInputStream oin;
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ByteArrayOutputStream bout;
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Object proxy;
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// test simple proxy write + read
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bout = new ByteArrayOutputStream();
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oout = new ObjectOutputStream(bout);
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oout.writeObject(Proxy.newProxyInstance(
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loader, interfaces, new Handler(foo, bar)));
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oout.close();
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oin = new ObjectInputStream(
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new ByteArrayInputStream(bout.toByteArray()));
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proxy = oin.readObject();
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if ((((Foo) proxy).foo() != foo) || (((Bar) proxy).bar() != bar)) {
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throw new Error();
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}
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// test missing proxy class ClassNotFoundException
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oin = new ProxyBlindInputStream(
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new ByteArrayInputStream(bout.toByteArray()));
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try {
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oin.readObject();
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throw new Error();
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} catch (ClassNotFoundException ex) {
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}
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}
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}
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