IncludeOnlyInterceptor


1   /* ***** BEGIN LICENSE BLOCK *****
2    * Version: MPL 1.1
3    * The contents of this file are subject to the Mozilla Public License Version
4    * 1.1 (the "License"); you may not use this file except in compliance with
5    * the License. You may obtain a copy of the License at
6    * http://www.mozilla.org/MPL/
7    * 
8    * Software distributed under the License is distributed on an "AS IS" basis,
9    * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
10   * for the specific language governing rights and limitations under the
11   * License.
12   * 
13   * The Original Code is Riot.
14   * 
15   * The Initial Developer of the Original Code is
16   * Neteye GmbH.
17   * Portions created by the Initial Developer are Copyright (C) 2006
18   * the Initial Developer. All Rights Reserved.
19   * 
20   * Contributor(s):
21   *   Felix Gnass [fgnass at neteye dot de]
22   * 
23   * ***** END LICENSE BLOCK ***** */
24  package org.riotfamily.website.interceptor;
25  
26  import javax.servlet.RequestDispatcher  ;
27  import javax.servlet.http.HttpServletRequest  ;
28  import javax.servlet.http.HttpServletResponse  ;
29  
30  import org.apache.commons.logging.Log;
31  import org.apache.commons.logging.LogFactory;
32  import org.riotfamily.common.web.util.PathMatchingInterceptor;
33  import org.springframework.web.util.WebUtils;
34  
35  /**
36   * HandlerInterceptor that sends a 404 error if the request is not an 
37   * include request, i.e. was not dispatched by a {@link RequestDispatcher}.
38   * 
39   * @author Felix Gnass [fgnass at neteye dot de]
40   */
41  public class IncludeOnlyInterceptor extends PathMatchingInterceptor {
42  
43      private static Log log = LogFactory.getLog(IncludeOnlyInterceptor.class);
44      
45      protected boolean doPreHandle(HttpServletRequest   request, 
46              HttpServletResponse   response, Object   handler) throws Exception   {
47          
48          if (!WebUtils.isIncludeRequest(request)) {
49              response.sendError(HttpServletResponse.SC_NOT_FOUND);
50              log.warn("Direct access prevented by IncludeOnlyInterceptor");
51              return false;
52          }
53          return true;
54      }
55  
56  }
57
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