/**

  * Copyright 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.osedu.org/licenses/ECL-2.0

  *

  * 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.student.security.filter;

 import java.io.IOException;

 import javax.servlet.FilterChain;

 import javax.servlet.ServletException;

 import javax.servlet.ServletRequest;

 import javax.servlet.ServletResponse;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import org.springframework.web.filter.GenericFilterBean;

 /**

  * This is a description of what this class does - Rich don't forget to fill

  * this in.

  * 

  * @author Kuali Rice Team (kuali-rice@googlegroups.com)

  * 

  */

 public class AuthenticationGwtRpcFilter extends GenericFilterBean {

         public void doFilter(ServletRequest request, ServletResponse response,

                         FilterChain chain) throws IOException, ServletException {

                 if (request instanceof HttpServletRequest && response instanceof HttpServletResponse) {

                         doFilterHttp((HttpServletRequest) request,

                                         (HttpServletResponse) response, chain);

                 } else {

                         // TODO: handle this

                 }

         }

         public void doFilterHttp(HttpServletRequest request,

                         HttpServletResponse response, FilterChain filterChain)

                         throws IOException, ServletException {

                 String URI = request.getRequestURI();

                 if (URI.endsWith(".html") && !URI.endsWith(".cache.html")) {

                         response.setHeader("Cache-Control", "no-cache");

                         response.setHeader("Cache-Control", "no-store");

                 }

                 filterChain.doFilter(request, response);

         }

         /* I don't think we need this

         public int getOrder() {

                 return FilterChainOrder.CAS_PROCESSING_FILTER + 1;

         }*/

 }