test/jdk/java/io/Serializable/illegalHandle/Test.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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 * questions.
 */

/* @test
 * @bug 4357979
 * @summary Verify that ObjectInputStream throws a StreamCorruptedException if
 *          it reads in an out-of-bounds handle value.
 */

import java.io.*;

public class Test {
    public static void main(String[] args) throws Exception {
        String base = System.getProperty("test.src", ".");

        /*
         * Files negativeHandle.ser and tooHighHandle.ser each contain a
         * serialized String object followed by an illegal handle
         */
        File f = new File(base, "negativeHandle.ser");
        FileInputStream in = new FileInputStream(f);
        try {
            ObjectInputStream oin = new ObjectInputStream(in);
            oin.readObject();
            try {
                oin.readObject();
                throw new Error("negative handle read should not succeed");
            } catch (StreamCorruptedException ex) {
            }
        } finally {
            in.close();
        }

        f = new File(base, "tooHighHandle.ser");
        in = new FileInputStream(f);
        try {
            ObjectInputStream oin = new ObjectInputStream(in);
            oin.readObject();
            try {
                oin.readObject();
                throw new Error("too-high handle read should not succeed");
            } catch (StreamCorruptedException ex) {
            }
        } finally {
            in.close();
        }
    }
}