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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    * 
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.portals.bridges.struts;
18  
19  import javax.servlet.RequestDispatcher;
20  import javax.servlet.ServletContext;
21  import javax.servlet.http.HttpServletRequest;
22  import javax.servlet.http.HttpServletRequestWrapper;
23  import javax.servlet.http.HttpSession;
24  
25  import org.apache.commons.logging.Log;
26  import org.apache.commons.logging.LogFactory;
27  
28  /***
29   * PortletServletRequestWrapper
30   * 
31   * @author <a href="mailto:ate@douma.nu">Ate Douma</a>
32   * @version $Id: PortletServletRequestWrapper.java 545677 2007-06-09 00:54:35Z ate $
33   */
34  public class PortletServletRequestWrapper extends HttpServletRequestWrapper
35  {
36      private static final Log log = LogFactory.getLog(PortletServletRequestWrapper.class);
37      private ServletContext context;
38      private HttpSession session;
39      
40      public PortletServletRequestWrapper(ServletContext context, HttpServletRequest request, HttpSession proxiedSession)
41      {
42          super(request);
43          this.context = context;
44          session = proxiedSession;
45          if ( proxiedSession == null )
46          {
47              session = request.getSession(false);
48          }
49      }
50  
51      public String getPathInfo()
52      {
53          return (String) getAttribute("javax.servlet.include.path_info");
54      }
55  
56      public String getContextPath()
57      {
58          return (String) getAttribute("javax.servlet.include.context_path");
59      }
60  
61      public String getRequestURI()
62      {
63          return (String) getAttribute("javax.servlet.include.request_uri");
64      }
65  
66      public String getServletPath()
67      {
68          return (String) getAttribute("javax.servlet.include.servlet_path");
69      }
70  
71      public String getQueryString()
72      {
73          return (String) getAttribute("javax.servlet.include.query_string");
74      }
75  
76      public RequestDispatcher getRequestDispatcher(String relativePath)
77      {
78          // Below comment and workaround taken from
79          // org.apache.jasper.runtime.JspRuntimeLibrary.include(...)
80          // of Tomcat 4.1.29.
81          //
82          // FIXME - It is tempting to use request.getRequestDispatcher() to
83          // resolve a relative path directly, but Catalina currently does not
84          // take into account whether the caller is inside a RequestDispatcher
85          // include or not. Whether Catalina *should* take that into account
86          // is a spec issue currently under review. In the mean time,
87          String path;
88          if (!relativePath.startsWith("/"))
89          {
90              path = getServletPath();
91              path = path.substring(0, path.lastIndexOf('/')) + '/'
92                      + relativePath;
93          } else
94              path = relativePath;
95          // Because our wrapped request actually is within the Portal context
96          // using getRequest().getRequestDispatcher(path) still won't work!
97          // Therefore to keep it inside the PortletContext our own
98          // servletContext is
99          // asked for a dispatcher. The above patch ensures that all requested
100         // paths
101         // are context relative.
102         RequestDispatcher dispatcher = context.getRequestDispatcher(path);
103         if (dispatcher != null)
104             return new PortletServletRequestDispatcher(dispatcher, path, false);
105         else
106             return null;
107     }
108 
109     public HttpSession getSession()
110     {
111         return getSession(true);
112     }
113 
114     public HttpSession getSession(boolean create)
115     {
116         if (create && session == null)
117         {
118             session = super.getSession(create);
119         }
120         return session;
121     }
122 }