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PicketBox is a security framework for Java Applications

There is a newer version: 5.1.0.Final

/*
  * 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.picketbox.config;

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

//$Id$

/**
 *  Privileged Blocks
 *  @author [email protected]
 *  @since  Oct 11, 2007 
 *  @version $Revision$
 */
class SecurityActions
{ 
  static ClassLoader getContextClassLoader() throws PrivilegedActionException
  {
     return AccessController.doPrivileged(new PrivilegedExceptionAction()
     { 
        public ClassLoader run() throws Exception
        {
          return Thread.currentThread().getContextClassLoader();
        }
     });
  }
   
  static Class loadClass(final String fqn) throws PrivilegedActionException
  {
     return AccessController.doPrivileged(new PrivilegedExceptionAction >()
     { 
        public Class run() throws Exception
        {
           ClassLoader tcl = Thread.currentThread().getContextClassLoader();
           return tcl.loadClass(fqn);
        }
     });
  }
  
  static ClassLoader getClassLoader( final Class clazz )
  {
     return AccessController.doPrivileged( new PrivilegedAction()
     {
        public ClassLoader run()
        { 
           return clazz.getClassLoader();
        }
     });
  }
}