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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.tomee.catalina;
import org.apache.openejb.classloader.WebAppEnricher;
import org.apache.openejb.component.ClassLoaderEnricher;
import org.apache.openejb.loader.JarLocation;
import org.apache.openejb.loader.SystemInstance;
import org.apache.openejb.util.LogCategory;
import org.apache.openejb.util.Logger;
import org.apache.tomee.installer.Paths;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
public final class TomEEClassLoaderEnricher implements WebAppEnricher {
private static final Logger LOGGER = Logger.getInstance(LogCategory.OPENEJB, TomEEClassLoaderEnricher.class);
/**
* Enrichement part
*/
public static final String TOMEE_WEBAPP_CLASSLOADER_ENRICHMENT_SKIP = "tomee.webapp.classloader.enrichment.skip";
public static final String TOMEE_WEBAPP_CLASSLOADER_ENRICHMENT_CLASSES = "tomee.webapp.classloader.enrichment.classes";
public static final String TOMEE_WEBAPP_CLASSLOADER_ENRICHMENT_PREFIXES = "tomee.webapp.classloader.enrichment.prefixes";
private static final String[] JAR_TO_ADD_CLASS_HELPERS;
private static final String[] DEFAULT_PREFIXES_TO_ADD = new String[]{
"openwebbeans-jsf", // to be able to provide jsf impl
"tomee-mojarra",
"tomee-myfaces", // to be able to embedded myfaces in the webapp
"openejb-jpa-integration" // to be able to embedded hibernate, eclipselinks....
};
private static final String[] PREFIXES_TO_ADD;
static {
final Collection classes = new ArrayList();
final Collection prefixes = new ArrayList();
if (!SystemInstance.get().getOptions().get(TOMEE_WEBAPP_CLASSLOADER_ENRICHMENT_SKIP, false)) {
final String additionalEnrichments = SystemInstance.get().getOptions().get(TOMEE_WEBAPP_CLASSLOADER_ENRICHMENT_CLASSES, "");
if (additionalEnrichments != null && !additionalEnrichments.isEmpty()) {
for (final String name : additionalEnrichments.split(",")) {
classes.add(name.trim());
}
}
final String additionalPrefixes = SystemInstance.get().getOptions().get(TOMEE_WEBAPP_CLASSLOADER_ENRICHMENT_PREFIXES, "");
prefixes.addAll(Arrays.asList(DEFAULT_PREFIXES_TO_ADD));
if (additionalPrefixes != null && !additionalPrefixes.isEmpty()) {
for (final String name : additionalPrefixes.split(",")) {
prefixes.add(name.trim());
}
}
}
JAR_TO_ADD_CLASS_HELPERS = classes.toArray(new String[classes.size()]);
PREFIXES_TO_ADD = prefixes.toArray(new String[prefixes.size()]);
}
@Override
public URL[] enrichment(final ClassLoader appCl) {
final Collection urls = new HashSet();
// from class
final ClassLoader cl = TomEEClassLoaderEnricher.class.getClassLoader(); // reference classloader = standardclassloader
if (cl != appCl && appCl != null) {
for (final String name : JAR_TO_ADD_CLASS_HELPERS) {
try { // don't do anything with appCl otherwise in tomcat it will be broken since WebAppClassLoader caches missed resources
final String classFileName = name.replace(".", "/") + ".class";
final URL parentUrl = cl.getResource(classFileName);
final File file = jarLocation(parentUrl, classFileName);
if (file == null) {
continue;
}
urls.add(file.toURI().toURL());
} catch (final Exception e) {
// ignore
} catch (final NoClassDefFoundError error) {
// no-op
}
}
}
// from prefix
final Paths paths = new Paths(new File(System.getProperty("openejb.home"))); // parameter is useless
for (final String prefix : PREFIXES_TO_ADD) {
final File file = paths.findTomEELibJar(prefix);
if (file != null) {
try {
urls.add(file.toURI().toURL());
} catch (final MalformedURLException e) {
// ignored
}
}
}
// from config
urls.addAll(Arrays.asList(SystemInstance.get().getComponent(ClassLoaderEnricher.class).applicationEnrichment()));
return urls.toArray(new URL[urls.size()]);
}
private static File jarLocation(final URL url, final String classFileName) throws MalformedURLException {
if ("jar".equals(url.getProtocol())) {
final String spec = url.getFile();
return new File(JarLocation.decode(new URL(spec.substring(0, spec.indexOf('!'))).getFile()));
} else if ("file".equals(url.getProtocol())) {
return JarLocation.toFile(classFileName, url);
}
return null;
}
/**
* Validation part
*/
private static final String[][] FORBIDDEN_CLASSES = new String[][]{ // name, spec +1 name, message. Note: [1] != null => [2] != null
{"javax.persistence.Entity", null, null}, // JPA
{"javax.transaction.Transaction", null, null}, // JTA
{"javax.jws.WebService", null, null}, // JAXWS
{"javax.validation.Validation", null, null}, // BVal
{"javax.jms.Queue", null, null}, // JMS
{"javax.enterprise.context.ApplicationScoped", null, null}, // CDI
{"javax.inject.Inject", null, null}, // CDI
{"javax.ws.rs.Path", "javax.ws.rs.core.Configurable", "You provide JAXRS 2 API in the webapp, we tolerate it to support some advanced feature but if you expect TomEE to provide it you should remove it"}, // JAXRS - commented since we manage to find why jersey-core brings the api!
{"javax.ejb.EJB", null, null}, // EJB
{"javax.annotation.PostConstruct", "javax.annotation.Priority", "You provide javax.annotation API 1.2 so we'll tolerate new classes but it should surely be upgraded in the container"} // javax.annotation
};
public static boolean validateJarFile(final File file) throws IOException {
final ClassLoader parent = TomEEClassLoaderEnricher.class.getClassLoader();
JarFile jarFile = null;
try {
jarFile = new JarFile(file);
for (final String[] name : FORBIDDEN_CLASSES) {
// if we can't load if from our classLoader we'll not impose anything on this class
boolean found = false;
for (int i = 0; i < 2; i++) {
try {
try {
parent.loadClass(name[0]);
found = true;
break;
} catch (final Exception e) {
// found = false
}
} catch (final LinkageError le) { // would be a pain to fail here
// retry
}
}
if (!found) {
continue;
}
// we found it so let's check it is or not in the file (potential conflict)
final String entry = name[0].replace('.', '/') + ".class";
final JarEntry jarEntry = jarFile.getJarEntry(entry);
if (jarEntry != null) {
if (name[1] != null) {
if (jarFile.getJarEntry(name[1].replace('.', '/') + ".class") != null) {
LOGGER.warning("jar '" + file.getAbsolutePath() + "' contains offending class: " + name[0]
+ "but: " + name[2]);
return true;
}
}
LOGGER.warning("jar '" + file.getAbsolutePath() + "' contains offending class: " + name[0]
+ ". It will be ignored.");
return !"true".equals(SystemInstance.get().getProperty("openejb.api." + name[0] + ".validation", "true"));
}
}
return true;
} finally {
if (jarFile != null) { // in java 6 JarFile is not Closeable so don't use IO.close()
try {
jarFile.close();
} catch (final IOException ioe) {
// Ignored
}
}
}
}
}
