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PicketBox is a security framework for Java Applications

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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2008, 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.security.config.parser;

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

/**
 * Privileged Blocks
 * @author [email protected]
 * @since November 19, 2008
 */
class SecurityActions
{
   static ClassLoader getContextClassLoader() throws PrivilegedActionException
   {
      return AccessController.doPrivileged(new PrivilegedExceptionAction()
      { 
         public ClassLoader run() throws Exception
         {
            return Thread.currentThread().getContextClassLoader();
         }
      });
   }

   static String getSystemProperty(final String key, final String defaultValue)
   {
      return AccessController.doPrivileged(new PrivilegedAction()
      {
         public String run()
         {
            return System.getProperty(key, defaultValue);
         }
      });
   }

   static void setSystemProperty(final String key, final String value)
   {
      AccessController.doPrivileged(new PrivilegedAction