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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.jboss.security.auth.container.modules;

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

import javax.security.auth.Subject;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.login.LoginContext;
import javax.security.auth.login.LoginException;


/**
 *  Privileged Blocks
 *  @author [email protected]
 *  @since  Jul 26, 2007 
 *  @version $Revision$
 */
class SecurityActions
{
   static ClassLoader getContextClassLoader()
   {
      return AccessController.doPrivileged(new PrivilegedAction()
      { 
         public ClassLoader run()
         { 
            return Thread.currentThread().getContextClassLoader();
         }
       });  
   } 
   
   static LoginContext createLoginContext(final String configName,
         final Subject subject, final CallbackHandler cbh) throws PrivilegedActionException
   {
      return AccessController.doPrivileged(new PrivilegedExceptionAction()
      { 
         public LoginContext run() throws LoginException
         { 
            return new LoginContext(configName, subject, cbh);
         }
       });  
   }  
}