1   /**
2    * Copyright (c) 2000-2008 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.filters.sessionid;
24  
25  import com.liferay.portal.kernel.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  import com.liferay.portal.kernel.servlet.BaseFilter;
28  import com.liferay.portal.kernel.util.GetterUtil;
29  import com.liferay.portal.util.PropsUtil;
30  
31  import java.io.IOException;
32  
33  import javax.servlet.FilterChain;
34  import javax.servlet.ServletException;
35  import javax.servlet.ServletRequest;
36  import javax.servlet.ServletResponse;
37  import javax.servlet.http.HttpServletRequest;
38  import javax.servlet.http.HttpServletResponse;
39  
40  /**
41   * <a href="SessionIdFilter.java.html"><b><i>View Source</i></b></a>
42   *
43   * <p>
44   * http://forum.java.sun.com/thread.jspa?threadID=197150.
45   * </p>
46   *
47   * @author Brian Wing Shun Chan
48   * @author Raymond Aug�
49   *
50   */
51  public class SessionIdFilter extends BaseFilter {
52  
53      public static final boolean USE_FILTER = GetterUtil.getBoolean(
54          PropsUtil.get(SessionIdFilter.class.getName()), true);
55  
56      public void doFilter(
57              ServletRequest req, ServletResponse res, FilterChain chain)
58          throws IOException, ServletException {
59  
60          if (_log.isDebugEnabled()) {
61              if (USE_FILTER) {
62                  _log.debug(
63                      "Session id sharing between http and https is enabled");
64              }
65              else {
66                  _log.debug(
67                      "Session id sharing between http and https is disabled");
68              }
69          }
70  
71          if (USE_FILTER) {
72              HttpServletRequest httpReq = (HttpServletRequest)req;
73              HttpServletResponse httpRes = (HttpServletResponse)res;
74  
75              SessionIdServletRequest sessionIdReq =
76                  new SessionIdServletRequest(httpReq, httpRes);
77  
78              doFilter(SessionIdFilter.class, sessionIdReq, httpRes, chain);
79          }
80          else {
81              doFilter(SessionIdFilter.class, req, res, chain);
82          }
83      }
84  
85      private static Log _log = LogFactoryUtil.getLog(SessionIdFilter.class);
86  
87  }