81 lines
2.9 KiB
Java
81 lines
2.9 KiB
Java
/*
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* Copyright (c) 1997, 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 Verify that ClassCastException is thrown when deserializing
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* an object and one of its object fields is incompatibly replaced
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* by either replaceObject/resolveObject.
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*
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*/
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import java.io.*;
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class A implements Serializable {
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private static final long serialVersionUID = 1L;
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}
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class B implements Serializable {
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private static final long serialVersionUID = 1L;
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}
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class Container implements Serializable {
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private static final long serialVersionUID = 1L;
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A a = new A();
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}
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class ReplacerObjectOutputStream extends ObjectOutputStream {
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static B b = new B();
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public ReplacerObjectOutputStream(OutputStream out) throws IOException {
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super(out);
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enableReplaceObject(true);
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}
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protected Object replaceObject(Object obj) throws IOException {
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if(obj instanceof A) {
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System.err.println("replaceObject(" + obj.toString() + ") with " +
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b.toString());
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return b;
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} else return obj;
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}
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}
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public class BadSubstByReplace {
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public static void main(String args[]) throws IOException, ClassNotFoundException {
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Container c = new Container();
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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ReplacerObjectOutputStream out = new ReplacerObjectOutputStream(baos);
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out.writeObject(c);
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out.close();
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ObjectInputStream in =
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new ObjectInputStream(new ByteArrayInputStream(baos.toByteArray()));
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try {
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c = (Container)in.readObject(); // throws IllegalArgumentException.
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throw new Error("Should have thrown ClassCastException");
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} catch ( ClassCastException e) {
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System.err.println("Caught expected exception " + e.toString());
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e.printStackTrace();
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} finally {
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in.close();
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}
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}
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}
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