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/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors. 
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/ 
package org.jboss.reflect.plugins;

import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;

import org.jboss.reflect.spi.MethodInfo;

/**
 * 
 * @author Kabir Khan
 * @version $Revision: 1.1 $
 */
class SecurityActions
{
   
   interface GetClassLoaderAction 
   {
      ClassLoader getClassLoader(Class clazz);
      
      GetClassLoaderAction NON_PRIVILEGED = new GetClassLoaderAction() {

         public ClassLoader getClassLoader(Class clazz)
         {
            return clazz.getClassLoader();
         }};

     GetClassLoaderAction PRIVILEGED = new GetClassLoaderAction() {

         public ClassLoader getClassLoader(final Class clazz)
         {
            return AccessController.doPrivileged(new PrivilegedAction() {

               public ClassLoader run()
               {
                  return clazz.getClassLoader();
               }});
         }};
   }
   
   static ClassLoader getClassLoader(Class clazz)
   {
      if (System.getSecurityManager() == null)
      {
         return GetClassLoaderAction.NON_PRIVILEGED.getClassLoader(clazz);
      }
      else
      {
         return GetClassLoaderAction.PRIVILEGED.getClassLoader(clazz);
      }
   }
   
   static Object invokeMethod(final MethodInfo m, final Object o, final Object...args) throws Throwable
   {
      if (System.getSecurityManager() == null)
         return m.invoke(o, args);
      else
      {
         try
         {
            return AccessController.doPrivileged(new PrivilegedExceptionAction