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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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test/jdk/java/util/Hashtable/SimpleSerialization.java Normal file
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/*
* Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.
* 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
* -------------------------------------------
*
* Portions Copyright (c) 2010, 2011 IBM Corporation
*/
/*
* @test
* @bug 6927486
* @summary A serialized Hashtable can be de-serialized properly.
* @author Neil Richards <neil.richards@ngmr.net>, <neil_richards@uk.ibm.com>
*/
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Hashtable;
import java.util.Map;
public class SimpleSerialization {
public static void main(final String[] args) throws Exception {
Hashtable<String, String> h1 = new Hashtable<>();
System.err.println("*** BEGIN TEST ***");
h1.put("key", "value");
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
try (ObjectOutputStream oos = new ObjectOutputStream(baos)) {
oos.writeObject(h1);
}
final byte[] data = baos.toByteArray();
final ByteArrayInputStream bais = new ByteArrayInputStream(data);
final Object deserializedObject;
try (ObjectInputStream ois = new ObjectInputStream(bais)) {
deserializedObject = ois.readObject();
}
if(!h1.getClass().isInstance(deserializedObject)) {
throw new RuntimeException("Result not assignable to type of h1");
}
if (false == h1.equals(deserializedObject)) {
Hashtable<String, String> d1 = (Hashtable<String, String>) h1;
for(Map.Entry entry: h1.entrySet()) {
System.err.println("h1.key::" + entry.getKey() + " d1.containsKey()::" + d1.containsKey((String) entry.getKey()));
System.err.println("h1.value::" + entry.getValue() + " d1.contains()::" + d1.contains(entry.getValue()));
System.err.println("h1.value == d1.value " + entry.getValue().equals(d1.get((String) entry.getKey())));
}
throw new RuntimeException(getFailureText(h1, deserializedObject));
}
}
private static String getFailureText(final Object orig, final Object copy) {
final StringWriter sw = new StringWriter();
try (PrintWriter pw = new PrintWriter(sw)) {
pw.println("Test FAILED: Deserialized object is not equal to the original object");
pw.print("\tOriginal: ");
printObject(pw, orig).println();
pw.print("\tCopy: ");
printObject(pw, copy).println();
}
return sw.toString();
}
private static PrintWriter printObject(final PrintWriter pw, final Object o) {
pw.printf("%s@%08x", o.getClass().getName(), System.identityHashCode(o));
return pw;
}
}