Package org.jboss.ejb3.security

Source Code of org.jboss.ejb3.security.RunAsSecurityInterceptorv2

/*
* 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.ejb3.security;
import org.jboss.aop.advice.Interceptor;
import org.jboss.aop.joinpoint.Invocation;
import org.jboss.aop.joinpoint.MethodInvocation;
import org.jboss.ejb3.EJBContainer;
import org.jboss.ejb3.annotation.SecurityDomain;
import org.jboss.ejb3.mdb.MessagingContainer;
import org.jboss.security.RunAsIdentity;
import org.jboss.security.SecurityContext;

/**
* An interceptor that enforces the run-as identity declared by a bean.
*
* @author <a href="mailto:bill@jboss.org">Bill Burke</a>.
* @author Anil.Saldhana@redhat.com
* @version $Revision: 61914 $
*/
public class RunAsSecurityInterceptorv2 implements Interceptor
{
   private RunAsIdentity runAsIdentity;
   private EJBContainer container;

   public RunAsSecurityInterceptorv2(EJBContainer container, RunAsIdentity id)
   {
      this.runAsIdentity = id;
      this.container = container;
   }

   protected RunAsIdentity getRunAsIdentity(Invocation invocation)
   {
      return runAsIdentity;
   }

   /**
    * @see Interceptor#invoke(Invocation)
    */
   public Object invoke(Invocation invocation) throws Throwable
   {
      SecurityContext cachedContext = null;
     
      //Check for ejbTimeOut
      SecurityHelper shelper = new SecurityHelper();
      if(shelper.isEJBTimeOutCallback(((MethodInvocation) invocation).getMethod()))
         return invocation.invokeNext();
     
      SecurityContext sc = SecurityActions.getSecurityContext();
     
      cachedContext = sc;
    
      /**
       * An MDB always starts with a null security context coming in
       */
      if(container instanceof MessagingContainer)
      {
         sc = null;
      }
     
      if(sc == null)
      {
         SecurityDomain domain = (SecurityDomain)container.getAnnotation(SecurityDomain.class);
         if(domain != null)
         {
            sc = SecurityActions.createSecurityContext(domain.value());
            SecurityActions.setSecurityContext(sc);
        
      }

      if(sc != null)
      {
        if( runAsIdentity == null && SecurityActions.peekRunAs() != null )
        {
          // Preserve the RunAs identity if one already exists
          sc.setOutgoingRunAs(SecurityActions.peekRunAs());
        }
        else
        {
          sc.setOutgoingRunAs(runAsIdentity);
        }
      }
     
      try
      {
         return invocation.invokeNext();
      }
      finally
      {
         if(sc != null)
           SecurityActions.popRunAs();
         SecurityActions.setSecurityContext(cachedContext);
      }
   }

   /**
    * @see Interceptor#getName()
    */
   public String getName()
   {
      return getClass().getName();
  
}
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