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1   /*
2    * $Id: SecurityWrappingFilter.java 637430 2008-03-15 15:38:35Z apetrelli $
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   * http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  package org.apache.tiles.test.filter;
22  
23  import java.io.IOException;
24  import javax.servlet.Filter;
25  import javax.servlet.FilterChain;
26  import javax.servlet.FilterConfig;
27  import javax.servlet.ServletException;
28  import javax.servlet.ServletRequest;
29  import javax.servlet.ServletResponse;
30  import javax.servlet.http.HttpServletRequest;
31  import javax.servlet.http.HttpServletRequestWrapper;
32  
33  /**
34   * Filter that wraps an HttpServletRequest to override "isUserInRole".
35   *
36   * @version $Rev: 637430 $ $Date: 2008-03-16 02:38:35 +1100 (Sun, 16 Mar 2008) $
37   */
38  public class SecurityWrappingFilter implements Filter {
39  
40      /**
41       * The role that the current user is supposed to use.
42       */
43      public static final String GOOD_ROLE = "goodrole";
44  
45      /** {@inheritDoc} */
46      public void init(FilterConfig filterConfig) throws ServletException {
47          // No operation
48      }
49  
50      /** {@inheritDoc} */
51      public void doFilter(ServletRequest servletRequest,
52              ServletResponse servletResponse, FilterChain filterChain)
53              throws IOException, ServletException {
54          HttpServletRequest wrappedRequest = new SecurityWrapperHttpServletRequest(
55                  (HttpServletRequest) servletRequest);
56          filterChain.doFilter(wrappedRequest, servletResponse);
57      }
58  
59      /** {@inheritDoc} */
60      public void destroy() {
61          // No operation
62      }
63  
64      /**
65       * Request wrapper that overrides "isUserInRole" method.
66       *
67       * @version $Rev: 637430 $ $Date: 2008-03-16 02:38:35 +1100 (Sun, 16 Mar 2008) $
68       */
69      private static class SecurityWrapperHttpServletRequest extends
70              HttpServletRequestWrapper {
71          /**
72           * Constructor.
73           *
74           * @param request The HTTP servlet request.
75           */
76          public SecurityWrapperHttpServletRequest(HttpServletRequest request) {
77              super(request);
78          }
79  
80          /** {@inheritDoc} */
81          @Override
82          public boolean isUserInRole(String role) {
83              return GOOD_ROLE.equals(role);
84          }
85      }
86  }