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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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104
test/jdk/java/net/URLClassLoader/definePackage/SplitPackage.java Normal file
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/*
* Copyright (c) 2016, 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 8153665
* @summary Test two URLClassLoader define Package object of the same name
* @library /test/lib
* @build jdk.test.lib.compiler.CompilerUtils
* @modules jdk.compiler
* @run testng SplitPackage
*/
import java.net.URL;
import java.net.URLClassLoader;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.util.jar.Manifest;
import jdk.test.lib.compiler.CompilerUtils;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;
import static org.testng.Assert.*;
public class SplitPackage {
private static final Path SRC_DIR = Paths.get(System.getProperty("test.src", "."));
private static final Path FOO_DIR = Paths.get("foo");
private static final Path BAR_DIR = Paths.get("bar");
@BeforeTest
private void setup() throws Exception {
Files.createDirectory(BAR_DIR);
Path pkgDir = Paths.get("p");
// compile classes in package p
assertTrue(CompilerUtils.compile(SRC_DIR.resolve(pkgDir), BAR_DIR));
// move p.Foo to a different directory
Path foo = pkgDir.resolve("Foo.class");
Files.createDirectories(FOO_DIR.resolve(pkgDir));
Files.move(BAR_DIR.resolve(foo), FOO_DIR.resolve(foo),
StandardCopyOption.REPLACE_EXISTING);
}
@Test
public void test() throws Exception {
URLClassLoader loader1 = new URLClassLoader(new URL[] {
FOO_DIR.toUri().toURL()
});
Loader loader2 = new Loader(new URL[] {
BAR_DIR.toUri().toURL()
}, loader1);
Class<?> foo = Class.forName("p.Foo", true, loader2);
Class<?> bar = Class.forName("p.Bar", true, loader2);
Class<?> baz = Class.forName("p.Baz", true, loader2);
Package pForFoo = loader1.getDefinedPackage("p");
Package pForBar = loader2.getDefinedPackage("p");
assertEquals(pForFoo.getName(), pForBar.getName());
assertTrue(pForFoo != pForBar);
try {
loader2.defineSplitPackage("p");
} catch (IllegalArgumentException e) {
}
}
static class Loader extends URLClassLoader {
Loader(URL[] urls, URLClassLoader parent) {
super(urls, parent);
}
public Package defineSplitPackage(String name) {
Manifest manifest = new Manifest();
return super.definePackage(name, manifest, null);
}
}
}