/*
* JBoss, Home of Professional Open Source
* Copyright 2005, 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.ws.extensions.security;

import java.security.Principal;
import java.security.cert.X509Certificate;

import org.jboss.logging.Logger;
import org.jboss.security.CertificatePrincipal;
import org.jboss.security.auth.certs.SubjectCNMapping;
import org.jboss.security.auth.certs.SubjectDNMapping;
import org.jboss.ws.extensions.security.element.Token;
import org.jboss.ws.extensions.security.element.X509Token;
import org.jboss.ws.extensions.security.WSSecurityException;
import org.jboss.wsf.spi.SPIProvider;
import org.jboss.wsf.spi.SPIProviderResolver;
import org.jboss.wsf.spi.invocation.SecurityAdaptor;
import org.jboss.wsf.spi.invocation.SecurityAdaptorFactory;
import org.w3c.dom.Document;

/**
 * This is used for X509Certificate JAAS authentication
 * 
 * @author alessio.soldano@jboss.com
 * @since 24-May-2008
 */
public class ReceiveX509Certificate implements TokenOperation
{
   private static Logger log = Logger.getLogger(ReceiveX509Certificate.class);
   private SecurityAdaptorFactory secAdapterfactory;
   private CertificatePrincipal certMapping;

   public ReceiveX509Certificate(String certificatePrincipal)
   {
      SPIProvider spiProvider = SPIProviderResolver.getInstance().getProvider();
      secAdapterfactory = spiProvider.getSPI(SecurityAdaptorFactory.class);
      if (certificatePrincipal != null && !certificatePrincipal.equals(""))
      {
         try
         {
            ClassLoader loader = Thread.currentThread().getContextClassLoader();
            Class<?> cpClass = loader.loadClass(certificatePrincipal);
            certMapping = (CertificatePrincipal) cpClass.newInstance();
         }
         catch (Exception e)
         {
            log.error("Failed to load CertificatePrincipal '" + certificatePrincipal + "', using default SubjectDNMapping.", e);
         }
      }
      if (certMapping == null)
         certMapping = new SubjectDNMapping();
   }

   public void process(Document message, Token token) throws WSSecurityException
   {
      if (token == null || !(token instanceof X509Token))
      {
         throw new IllegalArgumentException("Token " + token + " is not a X509Token!");
      }
      X509Certificate cert = ((X509Token)token).getCert();
      Principal principal = certMapping.toPrinicipal(new X509Certificate[] { cert });
      SecurityAdaptor securityAdaptor = secAdapterfactory.newSecurityAdapter();
      securityAdaptor.setPrincipal(principal);
      securityAdaptor.setCredential(cert);

   }

}
