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test/java/io/Serializable/superclassDataLoss/SuperclassDataLossTest.java
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*** 1,7 ****
/*
! * Copyright (c) 2000, 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.
--- 1,7 ----
/*
! * Copyright (c) 2000, 2017, 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.
*** 20,57 ****
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @bug 4325590
* @summary Verify that superclass data is not lost when incoming superclass
* descriptor is matched with local class that is not a superclass of
* the deserialized instance's class.
*/
! import java.io.*;
! import java.net.*;
class MixedSuperclassStream extends ObjectInputStream {
! MixedSuperclassStream(InputStream in) throws IOException { super(in); }
protected Class resolveClass(ObjectStreamClass desc)
throws IOException, ClassNotFoundException
{
// resolve A's classdesc to class != B's superclass
String name = desc.getName();
if (name.equals("A")) {
! return Class.forName(name, true, Test.ldr1);
} else if (name.equals("B")) {
! return Class.forName(name, true, Test.ldr2);
} else {
! return super.resolveClass(desc);
}
}
}
! public class Test {
static URLClassLoader ldr1, ldr2;
static {
try {
ldr1 = new URLClassLoader(new URL[] { new URL("file:cb1.jar") });
--- 20,85 ----
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
+ * @test
* @bug 4325590
+ * @library /lib/testlibrary
+ * @build JarUtils A B
+ * @run main SuperclassDataLossTest
* @summary Verify that superclass data is not lost when incoming superclass
* descriptor is matched with local class that is not a superclass of
* the deserialized instance's class.
*/
! import java.io.ByteArrayInputStream;
! import java.io.ByteArrayOutputStream;
! import java.io.InputStream;
! import java.io.IOException;
! import java.io.ObjectInputStream;
! import java.io.ObjectOutputStream;
! import java.io.ObjectStreamClass;
! import java.net.URL;
! import java.net.URLClassLoader;
! import java.net.MalformedURLException;
! import java.nio.file.Files;
! import java.nio.file.Path;
! import java.nio.file.Paths;
! import java.nio.file.StandardCopyOption;
class MixedSuperclassStream extends ObjectInputStream {
! private boolean ldr12A;
!
! MixedSuperclassStream(InputStream in, boolean ldr1First) throws IOException {
! super(in);
! this.ldr12A = ldr12A;
! }
protected Class resolveClass(ObjectStreamClass desc)
throws IOException, ClassNotFoundException
{
// resolve A's classdesc to class != B's superclass
String name = desc.getName();
+ if (ldr12A) {
if (name.equals("A")) {
! return Class.forName(name, true, SuperclassDataLossTest.ldr1);
} else if (name.equals("B")) {
! return Class.forName(name, true, SuperclassDataLossTest.ldr2);
! }
} else {
! if (name.equals("B")) {
! return Class.forName(name, true, SuperclassDataLossTest.ldr1);
! } else if (name.equals("A")) {
! return Class.forName(name, true, SuperclassDataLossTest.ldr2);
! }
}
+ return super.resolveClass(desc);
}
}
! public class SuperclassDataLossTest {
static URLClassLoader ldr1, ldr2;
static {
try {
ldr1 = new URLClassLoader(new URL[] { new URL("file:cb1.jar") });
*** 60,79 ****
throw new Error();
}
}
public static void main(String[] args) throws Exception {
Runnable a = (Runnable) Class.forName("B", true, ldr1).newInstance();
a.run();
ByteArrayOutputStream bout = new ByteArrayOutputStream();
ObjectOutputStream oout = new ObjectOutputStream(bout);
oout.writeObject(a);
oout.close();
ByteArrayInputStream bin =
new ByteArrayInputStream(bout.toByteArray());
! ObjectInputStream oin = new MixedSuperclassStream(bin);
! a = (Runnable) oin.readObject();
a.run();
}
}
--- 88,125 ----
throw new Error();
}
}
public static void main(String[] args) throws Exception {
+ setup();
+
Runnable a = (Runnable) Class.forName("B", true, ldr1).newInstance();
a.run();
ByteArrayOutputStream bout = new ByteArrayOutputStream();
ObjectOutputStream oout = new ObjectOutputStream(bout);
oout.writeObject(a);
oout.close();
+ test(bout, true);
+ test(bout, false);
+
+ ldr1.close();
+ ldr2.close();
+ }
+
+ private static void test(ByteArrayOutputStream bout, boolean ldr12A) throws Exception {
ByteArrayInputStream bin =
new ByteArrayInputStream(bout.toByteArray());
! ObjectInputStream oin = new MixedSuperclassStream(bin, ldr12A);
! Runnable a = (Runnable) oin.readObject();
a.run();
}
+
+ private static void setup() throws Exception {
+ Path classes = Paths.get(System.getProperty("test.classes", ""));
+ JarUtils.createJarFile(Paths.get("cb1.jar"), classes,
+ classes.resolve("A.class"), classes.resolve("B.class"));
+ Files.copy(Paths.get("cb1.jar"), Paths.get("cb2.jar"),
+ StandardCopyOption.REPLACE_EXISTING);
+ }
}
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