1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.servlet;
24  
25  import com.liferay.portal.NoSuchLayoutException;
26  import com.liferay.portal.kernel.log.Log;
27  import com.liferay.portal.kernel.log.LogFactoryUtil;
28  import com.liferay.portal.kernel.util.GetterUtil;
29  import com.liferay.portal.kernel.util.ParamUtil;
30  import com.liferay.portal.kernel.util.Validator;
31  import com.liferay.portal.util.Portal;
32  import com.liferay.portal.util.PortalUtil;
33  import com.liferay.portal.util.WebKeys;
34  
35  import java.io.IOException;
36  
37  import javax.servlet.RequestDispatcher;
38  import javax.servlet.ServletContext;
39  import javax.servlet.ServletException;
40  import javax.servlet.http.HttpServlet;
41  import javax.servlet.http.HttpServletRequest;
42  import javax.servlet.http.HttpServletResponse;
43  
44  /**
45   * <a href="WidgetServlet.java.html"><b><i>View Source</i></b></a>
46   *
47   * @author Brian Wing Shun Chan
48   *
49   */
50  public class WidgetServlet extends HttpServlet {
51  
52      public void service(
53              HttpServletRequest request, HttpServletResponse response)
54          throws IOException, ServletException {
55  
56          try {
57              String redirect = getRedirect(request);
58  
59              if (redirect == null) {
60                  PortalUtil.sendError(
61                      HttpServletResponse.SC_NOT_FOUND,
62                      new NoSuchLayoutException(), request, response);
63              }
64              else {
65                  request.setAttribute(WebKeys.WIDGET, Boolean.TRUE);
66  
67                  ServletContext servletContext = getServletContext();
68  
69                  RequestDispatcher requestDispatcher =
70                      servletContext.getRequestDispatcher(redirect);
71  
72                  requestDispatcher.forward(request, response);
73              }
74          }
75          catch (Exception e) {
76              _log.error(e, e);
77  
78              PortalUtil.sendError(
79                  HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e, request,
80                  response);
81          }
82      }
83  
84      protected String getRedirect(HttpServletRequest request) {
85          String path = GetterUtil.getString(request.getPathInfo());
86  
87          if (Validator.isNull(path)) {
88              return null;
89          }
90  
91          String ppid = ParamUtil.getString(request, "p_p_id");
92  
93          int pos = path.indexOf(Portal.FRIENDLY_URL_SEPARATOR);
94  
95          if (Validator.isNull(ppid) && (pos == -1)) {
96              return null;
97          }
98  
99          return path;
100     }
101 
102     private static Log _log = LogFactoryUtil.getLog(WidgetServlet.class);
103 
104 }