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/*
* Copyright (c) 2002, 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.
*
* 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.
*/
/*
* @test
* @bug 4765255
* @library /lib/testlibrary
* @build JarUtils A B C D PackageAccessTest
* @run main PackageAccessTest
* @summary Verify proper functioning of package equality checks used to
* determine accessibility of superclass constructor and inherited
* writeReplace/readResolve methods.
*/
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.io.InvalidClassException;
import java.net.URL;
import java.net.URLClassLoader;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
public class PackageAccessTest {
static Class bcl;
static Class dcl;
public static void main(String[] args) throws Exception {
setup();
try (URLClassLoader ldr =
new URLClassLoader(new URL[]{ new URL("file:foo.jar") },
PackageAccessTest.class.getClassLoader())) {
bcl = Class.forName("B", true, ldr);
dcl = Class.forName("D", true, ldr);
Object b = bcl.newInstance();
try {
swizzle(b);
throw new Error("expected InvalidClassException for class B");
} catch (InvalidClassException e) {
System.out.println("caught " + e);
e.printStackTrace();
}
if (A.packagePrivateConstructorInvoked) {
throw new Error("package private constructor of A invoked");
}
Object d = dcl.newInstance();
swizzle(d);
}
}
static void swizzle(Object obj) throws Exception {
ByteArrayOutputStream bout = new ByteArrayOutputStream();
ObjectOutputStream oout = new ObjectOutputStream(bout);
oout.writeObject(obj);
oout.close();
ByteArrayInputStream bin =
new ByteArrayInputStream(bout.toByteArray());
new TestObjectInputStream(bin).readObject();
}
static void setup() throws Exception {
Path classes = Paths.get(System.getProperty("test.classes", ""));
JarUtils.createJarFile(Paths.get("foo.jar"), classes,
classes.resolve("B.class"), classes.resolve("D.class"));
Files.delete(classes.resolve("B.class"));
Files.delete(classes.resolve("D.class"));
}
}
class TestObjectInputStream extends ObjectInputStream {
TestObjectInputStream(InputStream in) throws IOException {
super(in);
}
protected Class resolveClass(ObjectStreamClass desc)
throws IOException, ClassNotFoundException
{
String n = desc.getName();
if (n.equals("B")) {
return PackageAccessTest.bcl;
} else if (n.equals("D")) {
return PackageAccessTest.dcl;
} else {
return super.resolveClass(desc);
}
}
}
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