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Java > Open Source Codes > net > jforum > sso > RemoteUserSSO


1 /*
2  * Copyright (c) Rafael Steil
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms,
6  * with or without modification, are permitted provided
7  * that the following conditions are met:
8  *
9  * 1) Redistributions of source code must retain the above
10  * copyright notice, this list of conditions and the
11  * following disclaimer.
12  * 2) Redistributions in binary form must reproduce the
13  * above copyright notice, this list of conditions and
14  * the following disclaimer in the documentation and/or
15  * other materials provided with the distribution.
16  * 3) Neither the name of "Rafael Steil" nor
17  * the names of its contributors may be used to endorse
18  * or promote products derived from this software without
19  * specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
22  * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
23  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
24  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
27  * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
29  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES
30  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
32  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
33  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
34  * IN CONTRACT, STRICT LIABILITY, OR TORT
35  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
36  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
37  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
38  *
39  * Created on Mar 28, 2005 7:36:00 PM
40  * The JForum Project
41  * http://www.jforum.net
42  */
43 package net.jforum.sso;
44
45 import javax.servlet.http.HttpServletRequest JavaDoc;
46
47 import net.jforum.ActionServletRequest;
48 import net.jforum.entities.UserSession;
49 import net.jforum.util.preferences.ConfigKeys;
50 import net.jforum.util.preferences.SystemGlobals;
51
52 /**
53  * Simple SSO authenticator.
54  * This class will try to validate an user by simple
55  * checking <code>request.getRemoteUser()</code> is not
56  * null.
57  * @author Rafael Steil
58  * @author Daniel Campagnoli
59  * @version $Id: RemoteUserSSO.java,v 1.5 2005/07/26 03:05:34 rafaelsteil Exp $
60  */
61 public class RemoteUserSSO implements SSO
62 {
63     /**
64      * @see net.jforum.sso.SSO#authenticateUser(net.jforum.ActionServletRequest)
65      */
66     public String JavaDoc authenticateUser(ActionServletRequest request)
67     {
68         return request.getRemoteUser();
69     }
70
71    
72     public boolean isSessionValid(UserSession userSession, HttpServletRequest JavaDoc request)
73     {
74         String JavaDoc remoteUser = request.getRemoteUser();
75       
76         // user has since logged out
77 if(remoteUser == null && userSession.getUserId() != SystemGlobals.getIntValue(ConfigKeys.ANONYMOUS_USER_ID)) {
78             return false;
79       
80         // user has since logged in
81 } else if(remoteUser != null && userSession.getUserId() == SystemGlobals.getIntValue(ConfigKeys.ANONYMOUS_USER_ID)) {
82             return false;
83    
84         // user has changed user
85 } else if(remoteUser != null && !remoteUser.equals(userSession.getUsername())) {
86             return false;
87         }
88         return false;
89    }
90 }
91
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