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/*******************************************************************************
* Copyright (c) 2013, 2018 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.osgi.tests.hooks.framework;
import java.io.File;
import java.net.URL;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.eclipse.osgi.internal.hookregistry.HookRegistry;
import org.eclipse.osgi.tests.OSGiTestsActivator;
import org.osgi.framework.Bundle;
import org.osgi.framework.Constants;
import org.osgi.framework.FrameworkEvent;
import org.osgi.framework.FrameworkListener;
import org.osgi.framework.hooks.weaving.WeavingHook;
import org.osgi.framework.hooks.weaving.WovenClass;
import org.osgi.framework.launch.Framework;
import org.osgi.framework.namespace.PackageNamespace;
import org.osgi.framework.wiring.BundleRevision;
import org.osgi.framework.wiring.FrameworkWiring;
public class ClassLoaderHookTests extends AbstractFrameworkHookTests {
private static final String TEST_BUNDLE = "substitutes.a";
private static final String TEST_CLASSNAME = "substitutes.x.Ax";
private static final String HOOK_CONFIGURATOR_BUNDLE = "classloader.hooks.a";
private static final String HOOK_CONFIGURATOR_CLASS = "org.eclipse.osgi.tests.classloader.hooks.a.TestHookConfigurator";
private static final String REJECT_PROP = "classloader.hooks.a.reject";
private static final String BAD_TRANSFORM_PROP = "classloader.hooks.a.bad.transform";
private static final String RECURSION_LOAD = "classloader.hooks.a.recursion.load";
private static final String RECURSION_LOAD_SUPPORTED = "classloader.hooks.a.recursion.load.supported";
private static final String FILTER_CLASS_PATHS = "classloader.hooks.a.filter.class.paths";
private Map<String, String> configuration;
private Framework framework;
private String location;
protected void setUp() throws Exception {
super.setUp();
setRejectTransformation(false);
setBadTransform(false);
setRecursionLoad(false);
setRecursionLoadSupported(false);
setFilterClassPaths(false);
String loc = bundleInstaller.getBundleLocation(HOOK_CONFIGURATOR_BUNDLE);
loc = loc.substring(loc.indexOf("file:"));
classLoader.addURL(new URL(loc));
location = bundleInstaller.getBundleLocation(TEST_BUNDLE);
File file = OSGiTestsActivator.getContext().getDataFile(getName());
configuration = new HashMap<String, String>();
configuration.put(Constants.FRAMEWORK_STORAGE, file.getAbsolutePath());
configuration.put(HookRegistry.PROP_HOOK_CONFIGURATORS_INCLUDE, HOOK_CONFIGURATOR_CLASS);
framework = createFramework(configuration);
}
protected void tearDown() throws Exception {
stopQuietly(framework);
super.tearDown();
}
private void initAndStartFramework() throws Exception {
initAndStart(framework);
}
private Bundle installBundle() throws Exception {
return framework.getBundleContext().installBundle(location);
}
private void setRejectTransformation(boolean value) {
System.setProperty(REJECT_PROP, Boolean.toString(value));
}
private void setBadTransform(boolean value) {
System.setProperty(BAD_TRANSFORM_PROP, Boolean.toString(value));
}
private void setRecursionLoad(boolean value) {
System.setProperty(RECURSION_LOAD, Boolean.toString(value));
}
private void setRecursionLoadSupported(boolean value) {
System.setProperty(RECURSION_LOAD_SUPPORTED, Boolean.toString(value));
}
private void setFilterClassPaths(boolean value) {
System.setProperty(FILTER_CLASS_PATHS, Boolean.toString(value));
}
public void testRejectTransformationFromWeavingHook() throws Exception {
setRejectTransformation(true);
initAndStartFramework();
framework.getBundleContext().registerService(WeavingHook.class, new WeavingHook() {
@Override
public void weave(WovenClass wovenClass) {
wovenClass.setBytes(new byte[] {'b', 'a', 'd', 'b', 'y', 't', 'e', 's'});
wovenClass.getDynamicImports().add("badimport");
}
}, null);
Bundle b = installBundle();
b.loadClass(TEST_CLASSNAME);
// class load must succeed because the badbytes got rejected
// make sure we don't have any dynamic imports added
assertEquals("Found some imports.", 0, b.adapt(BundleRevision.class).getWiring().getRequirements(PackageNamespace.PACKAGE_NAMESPACE).size());
// no don't reject
setRejectTransformation(false);
refreshBundles(Collections.singleton(b));
try {
b.loadClass(TEST_CLASSNAME);
fail("Expected a ClassFormatError.");
} catch (ClassFormatError e) {
// expected
}
// class load must fail because the badbytes got used to define the class
// make sure we have a dynamic imports added
assertEquals("Found some imports.", 1, b.adapt(BundleRevision.class).getWiring().getRequirements(PackageNamespace.PACKAGE_NAMESPACE).size());
}
public void testRejectTransformationFromClassLoadingHook() throws Exception {
setRejectTransformation(true);
setBadTransform(true);
initAndStartFramework();
Bundle b = installBundle();
b.loadClass(TEST_CLASSNAME);
// no don't reject
setRejectTransformation(false);
refreshBundles(Collections.singleton(b));
try {
b.loadClass(TEST_CLASSNAME);
fail("Expected a ClassFormatError.");
} catch (ClassFormatError e) {
// expected
}
}
public void testRecursionFromClassLoadingHookNotSupported() throws Exception {
setRecursionLoad(true);
initAndStartFramework();
Bundle b = installBundle();
b.loadClass(TEST_CLASSNAME);
}
public void testRecursionFromClassLoadingHookIsSupported() throws Exception {
setRecursionLoad(true);
setRecursionLoadSupported(true);
initAndStartFramework();
Bundle b = installBundle();
b.loadClass(TEST_CLASSNAME);
}
private void refreshBundles(Collection<Bundle> bundles) throws InterruptedException {
final CountDownLatch refreshSignal = new CountDownLatch(1);
framework.adapt(FrameworkWiring.class).refreshBundles(bundles, new FrameworkListener() {
@Override
public void frameworkEvent(FrameworkEvent event) {
if (event.getType() == FrameworkEvent.PACKAGES_REFRESHED) {
refreshSignal.countDown();
}
}
});
refreshSignal.await(30, TimeUnit.SECONDS);
}
public void testFilterClassPaths() throws Exception {
setFilterClassPaths(false);
initAndStartFramework();
Bundle b = installBundle();
b.loadClass(TEST_CLASSNAME);
setFilterClassPaths(true);
refreshBundles(Collections.singleton(b));
try {
b.loadClass(TEST_CLASSNAME);
fail("Expected a ClassNotFoundException.");
} catch (ClassNotFoundException e) {
// expected
}
}
}
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