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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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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.activemq.artemis.utils;

import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectStreamClass;
import java.lang.reflect.Modifier;
import java.lang.reflect.Proxy;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;

public class ObjectInputStreamWithClassLoader extends ObjectInputStream {

   // Constants ------------------------------------------------------------------------------------

   // Attributes -----------------------------------------------------------------------------------

   // Static ---------------------------------------------------------------------------------------

   // Constructors ---------------------------------------------------------------------------------

   public ObjectInputStreamWithClassLoader(final InputStream in) throws IOException {
      super(in);
   }

   // Public ---------------------------------------------------------------------------------------

   // Package protected ----------------------------------------------------------------------------

   // Protected ------------------------------------------------------------------------------------

   @Override
   protected Class resolveClass(final ObjectStreamClass desc) throws IOException, ClassNotFoundException {
      if (System.getSecurityManager() == null) {
         return resolveClass0(desc);
      }
      else {
         try {
            return AccessController.doPrivileged(new PrivilegedExceptionAction() {
               @Override
               public Class run() throws Exception {
                  return resolveClass0(desc);
               }
            });
         }
         catch (PrivilegedActionException e) {
            throw unwrapException(e);
         }
      }
   }

   @Override
   protected Class resolveProxyClass(final String[] interfaces) throws IOException, ClassNotFoundException {
      if (System.getSecurityManager() == null) {
         return resolveProxyClass0(interfaces);
      }
      else {
         try {
            return AccessController.doPrivileged(new PrivilegedExceptionAction() {
               @Override
               public Class run() throws Exception {
                  return resolveProxyClass0(interfaces);
               }
            });
         }
         catch (PrivilegedActionException e) {
            throw unwrapException(e);
         }
      }
   }

   // Private --------------------------------------------------------------------------------------

   private Class resolveClass0(final ObjectStreamClass desc) throws IOException, ClassNotFoundException {
      String name = desc.getName();
      ClassLoader loader = Thread.currentThread().getContextClassLoader();
      try {
         // HORNETQ-747 https://issues.jboss.org/browse/HORNETQ-747
         // Use Class.forName instead of ClassLoader.loadClass to avoid issues with loading arrays
         Class clazz = Class.forName(name, false, loader);
         // sanity check only.. if a classLoader can't find a clazz, it will throw an exception
         if (clazz == null) {
            return super.resolveClass(desc);
         }
         else {
            return clazz;
         }
      }
      catch (ClassNotFoundException e) {
         return super.resolveClass(desc);
      }
   }

   private Class resolveProxyClass0(String[] interfaces) throws IOException, ClassNotFoundException {
      ClassLoader latestLoader = Thread.currentThread().getContextClassLoader();
      ClassLoader nonPublicLoader = null;
      boolean hasNonPublicInterface = false;
      // define proxy in class loader of non-public interface(s), if any
      Class[] classObjs = new Class[interfaces.length];
      for (int i = 0; i < interfaces.length; i++) {
         Class cl = Class.forName(interfaces[i], false, latestLoader);
         if ((cl.getModifiers() & Modifier.PUBLIC) == 0) {
            if (hasNonPublicInterface) {
               if (nonPublicLoader != cl.getClassLoader()) {
                  throw new IllegalAccessError("conflicting non-public interface class loaders");
               }
            }
            else {
               nonPublicLoader = cl.getClassLoader();
               hasNonPublicInterface = true;
            }
         }
         classObjs[i] = cl;
      }
      try {
         return Proxy.getProxyClass(hasNonPublicInterface ? nonPublicLoader : latestLoader, classObjs);
      }
      catch (IllegalArgumentException e) {
         throw new ClassNotFoundException(null, e);
      }
   }

   private RuntimeException unwrapException(PrivilegedActionException e) throws IOException, ClassNotFoundException {
      Throwable c = e.getCause();
      if (c instanceof IOException) {
         throw (IOException) c;
      }
      else if (c instanceof ClassNotFoundException) {
         throw (ClassNotFoundException) c;
      }
      else if (c instanceof RuntimeException) {
         throw (RuntimeException) c;
      }
      else if (c instanceof Error) {
         throw (Error) c;
      }
      else {
         throw new RuntimeException(c);
      }
   }

   // Inner classes --------------------------------------------------------------------------------

}