001/**
002 * Copyright 2005-2014 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.kuali.rice.ksb.messaging.web;
017
018import javax.servlet.http.HttpServletRequest;
019import javax.servlet.http.HttpServletResponse;
020
021import org.apache.struts.action.RequestProcessor;
022import org.kuali.rice.krad.UserSession;
023import org.kuali.rice.krad.util.GlobalVariables;
024import org.kuali.rice.krad.util.KRADUtils;
025
026/**
027 * A RequestProcessor implementation for Struts which handles determining whether or not access
028 * should be allowed to the requested KSB page.
029 *
030 * @author Kuali Rice Team (rice.collab@kuali.org)
031 */
032public class KSBStrutsRequestProcessor extends RequestProcessor {
033        
034        /**
035         * This overridden method ...
036         * 
037         * @see org.apache.struts.action.RequestProcessor#processPreprocess(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
038         */
039        @Override
040        protected boolean processPreprocess(HttpServletRequest request,
041                        HttpServletResponse response) {
042                final UserSession session = KRADUtils.getUserSessionFromRequest(request);
043
044        if (session == null) {
045            throw new IllegalStateException("the user session has not been established");
046        }
047
048        GlobalVariables.setUserSession(session);
049        GlobalVariables.clear();
050                return super.processPreprocess(request, response);
051        }
052}