/*
  * JBoss, Home of Professional Open Source
  * Copyright 2007, JBoss Inc., and individual contributors as indicated
  * by the @authors tag. See the copyright.txt 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.security;

import java.security.AccessController;
import java.security.PrivilegedAction;
 
/**
 *  Privileged Blocks
 *  @author Anil.Saldhana@redhat.com
 *  @since  Sep 11, 2007 
 *  @version $Revision$
 */
class SecuritySPIActions
{
   static final PrivilegedAction<ClassLoader> GET_CONTEXT_CLASSLOADER = new PrivilegedAction<ClassLoader>() {

       public ClassLoader run() {
           return Thread.currentThread().getContextClassLoader();
       }
   };

   static ClassLoader getContextClassLoader()
   {
      if (System.getSecurityManager() != null)
      {
         return AccessController.doPrivileged(GET_CONTEXT_CLASSLOADER);
      }
      else
         return Thread.currentThread().getContextClassLoader();
   }
   
   static ClassLoader getCurrentClassLoader(final Class clazz)
   {
      if (System.getSecurityManager() != null)
      {
         return AccessController.doPrivileged(new PrivilegedAction<ClassLoader>()
         {
            public ClassLoader run()
            {
               return clazz.getClassLoader();
            }
         });
      }
      else
         return clazz.getClassLoader();
   }
}