/*

  * Copyright 2005-2010 The Kuali Foundation

  * 

  * Licensed under the Educational Community License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  * 

  * http://www.opensource.org/licenses/ecl2.php

  * 

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.kuali.rice.kns.web.struts.action;

 import java.util.HashMap;

 import java.util.Map;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 import org.apache.struts.Globals;

 import org.apache.struts.action.Action;

 import org.apache.struts.action.ActionForm;

 import org.apache.struts.action.ActionForward;

 import org.apache.struts.action.ActionMapping;

 import org.kuali.rice.core.util.RiceConstants;

 import org.kuali.rice.kns.util.KNSConstants;

 /**

  * This is the struts action class for handling the exception for Kuali

  * applications.

  * 

  */

 public class AuthorizationExceptionAction extends Action {

     private static final String MESSAGE_FIELD = "message";

     private static final Log LOG = LogFactory.getLog(AuthorizationExceptionAction.class);

     /**

      * Dispatches action to be taken during an AuthorizationException.

      * 

      * @see org.apache.struts.action.Action#execute(

      *      org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, 

      *      javax.servlet.http.HttpServletResponse)

      */

     @Override

     public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

         if (LOG.isDebugEnabled()) {

             LOG.debug(String.format("ENTRY %s%n%s", form.getClass().getSimpleName(), request.getRequestURI()));

         }

         ActionForward forward = null;

         Throwable t = (Throwable) request.getAttribute(Globals.EXCEPTION_KEY);

         if (t == null) {

             forward = mapping.findForward(KNSConstants.MAPPING_CLOSE);

         } else {

             forward = processException(mapping, form, request, t);

         }

         if (LOG.isDebugEnabled()) {

             LOG.debug(String.format("EXIT %s", (forward == null) ? "null" : forward.getPath()));

         }

         return forward;

     }

     private ActionForward processException(ActionMapping mapping, ActionForm form, HttpServletRequest request, Throwable t) throws Exception {

         Map<String, String> properties = new HashMap<String, String>();

         properties.put(MESSAGE_FIELD, t.getMessage());

         request.setAttribute(AuthorizationExceptionAction.class.getName(), properties);

         return mapping.findForward(RiceConstants.MAPPING_BASIC);

     }

 }