/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 2001-2003 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Axis" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.<t_úX>env.get
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.jboss.axis.handlers;


import org.jboss.axis.AxisFault;
import org.jboss.axis.Message;
import org.jboss.axis.MessageContext;
import org.jboss.axis.soap.SOAPConstants;
import org.jboss.axis.utils.Messages;
import org.jboss.logging.Logger;


/**
 * @author Doug Davis (dug@us.ibm.com)
 * @author Rick Rineholt
 */
public class MD5AttachHandler extends org.jboss.axis.handlers.BasicHandler
{
   private static Logger log = Logger.getLogger(MD5AttachHandler.class.getName());

   public void invoke(MessageContext msgContext) throws AxisFault
   {
      log.debug("Enter: EchoHandler::invoke");
      try
      {
         // log.debug("IN MD5");
         Message msg = msgContext.getRequestMessage();
         SOAPConstants soapConstants = msgContext.getSOAPConstants();
         org.jboss.axis.message.SOAPEnvelopeAxisImpl env = (org.jboss.axis.message.SOAPEnvelopeAxisImpl)msg.getSOAPEnvelope();
         org.jboss.axis.message.SOAPBodyElementAxisImpl sbe = env.getFirstBody();//env.getBodyByName("ns1", "addedfile");
         org.w3c.dom.Element sbElement = sbe.getAsDOM();
         //get the first level accessor  ie parameter
         org.w3c.dom.Node n = sbElement.getFirstChild();

         for (; n != null && !(n instanceof org.w3c.dom.Element); n = n.getNextSibling()) ;
         org.w3c.dom.Element paramElement = (org.w3c.dom.Element)n;
         //Get the href associated with the attachment.
         String href = paramElement.getAttribute(soapConstants.getAttrHref());
         org.jboss.axis.Part ap = msg.getAttachmentsImpl().getAttachmentByReference(href);
         javax.activation.DataHandler dh = org.jboss.axis.attachments.AttachmentUtils.getActivationDataHandler(ap);
         org.w3c.dom.Node timeNode = paramElement.getFirstChild();
         long startTime = -1;

         if (timeNode != null && timeNode instanceof org.w3c.dom.Text)
         {
            String startTimeStr = ((org.w3c.dom.Text)timeNode).getData();

            startTime = Long.parseLong(startTimeStr);
         }
         // log.debug("GOTIT");

         long receivedTime = System.currentTimeMillis();
         long elapsedTime = -1;

         // log.debug("startTime=" + startTime);
         // log.debug("receivedTime=" + receivedTime);
         if (startTime > 0) elapsedTime = receivedTime - startTime;
         String elapsedTimeStr = elapsedTime + "";
         // log.debug("elapsedTimeStr=" + elapsedTimeStr);

         java.security.MessageDigest md = java.security.MessageDigest.getInstance("MD5");
         java.io.InputStream attachmentStream = dh.getInputStream();
         int bread = 0;
         byte[] buf = new byte[64 * 1024];

         do
         {
            bread = attachmentStream.read(buf);
            if (bread > 0)
            {
               md.update(buf, 0, bread);
            }
         }
         while (bread > -1);
         attachmentStream.close();
         buf = null;
         //Add the mime type to the digest.
         String contentType = dh.getContentType();

         if (contentType != null && contentType.length() != 0)
         {
            md.update(contentType.getBytes("US-ASCII"));
         }

         sbe = env.getFirstBody();
         sbElement = sbe.getAsDOM();
         //get the first level accessor  ie parameter
         n = sbElement.getFirstChild();
         for (; n != null && !(n instanceof org.w3c.dom.Element); n = n.getNextSibling()) ;
         paramElement = (org.w3c.dom.Element)n;
         // paramElement.setAttribute(soapConstants.getAttrHref(), respHref);
         String MD5String = org.jboss.axis.encoding.Base64.encode(md.digest());
         String senddata = " elapsedTime=" + elapsedTimeStr + " MD5=" + MD5String;

         // log.debug("senddata=" + senddata);
         paramElement.appendChild(paramElement.getOwnerDocument().createTextNode(senddata));

         sbe = new org.jboss.axis.message.SOAPBodyElementAxisImpl(sbElement);
         env.clearBody();
         env.addBodyElement(sbe);
         msg = new Message(env);

         msgContext.setResponseMessage(msg);
      }
      catch (Exception e)
      {
         log.error(Messages.getMessage("exception00"), e);
         throw AxisFault.makeFault(e);
      }

      log.debug("Exit: EchoHandler::invoke");
   }

}