1   /**
2    * Copyright (c) 2000-2007 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.action;
24  
25  import com.liferay.portal.events.EventsProcessor;
26  import com.liferay.portal.kernel.util.StringPool;
27  import com.liferay.portal.struts.ActionConstants;
28  import com.liferay.portal.util.CookieKeys;
29  import com.liferay.portal.util.PropsUtil;
30  
31  import javax.servlet.http.Cookie;
32  import javax.servlet.http.HttpServletRequest;
33  import javax.servlet.http.HttpServletResponse;
34  import javax.servlet.http.HttpSession;
35  import javax.servlet.jsp.PageContext;
36  
37  import org.apache.struts.action.Action;
38  import org.apache.struts.action.ActionForm;
39  import org.apache.struts.action.ActionForward;
40  import org.apache.struts.action.ActionMapping;
41  
42  /**
43   * <a href="LogoutAction.java.html"><b><i>View Source</i></b></a>
44   *
45   * @author Brian Wing Shun Chan
46   *
47   */
48  public class LogoutAction extends Action {
49  
50      public ActionForward execute(
51              ActionMapping mapping, ActionForm form, HttpServletRequest req,
52              HttpServletResponse res)
53          throws Exception {
54  
55          try {
56              HttpSession ses = req.getSession();
57  
58              EventsProcessor.process(PropsUtil.getArray(
59                  PropsUtil.LOGOUT_EVENTS_PRE), req, res);
60  
61              Cookie cookie = new Cookie(CookieKeys.ID, StringPool.BLANK);
62              cookie.setMaxAge(0);
63              cookie.setPath("/");
64  
65              CookieKeys.addCookie(res, cookie);
66  
67              cookie = new Cookie(CookieKeys.PASSWORD, StringPool.BLANK);
68              cookie.setMaxAge(0);
69              cookie.setPath("/");
70  
71              CookieKeys.addCookie(res, cookie);
72  
73              try {
74                  ses.invalidate();
75              }
76              catch (Exception e) {
77              }
78  
79              EventsProcessor.process(PropsUtil.getArray(
80                  PropsUtil.LOGOUT_EVENTS_POST), req, res);
81  
82              return mapping.findForward(ActionConstants.COMMON_REFERER);
83          }
84          catch (Exception e) {
85              req.setAttribute(PageContext.EXCEPTION, e);
86  
87              return mapping.findForward(ActionConstants.COMMON_ERROR);
88          }
89      }
90  
91  }