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Java > Open Source Codes > com > jcorporate > expresso > ext > taglib > IfLoggedIn


1 /* ====================================================================
2  * The Jcorporate Apache Style Software License, Version 1.2 05-07-2002
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61  * Portions of this software are based upon other open source
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64
65 /**
66  * IfLoggedIn.java
67  *
68  * Copyright 1999, 2000, 2001 Jcorporate Ltd.
69  */
70 package com.jcorporate.expresso.ext.taglib;
71
72 import com.jcorporate.expresso.core.misc.CurrentLogin;
73 import com.jcorporate.expresso.core.security.User;
74
75 import javax.servlet.http.HttpServletRequest JavaDoc;
76 import javax.servlet.http.HttpServletResponse JavaDoc;
77 import javax.servlet.jsp.JspTagException JavaDoc;
78
79
80 /**
81  * @author Shash Chatterjee
82  */
83 public class IfLoggedIn
84         extends ExpressoTagSupport {
85     boolean inverse = false;
86
87     public IfLoggedIn() {
88         super();
89     }
90
91     public int doEndTag()
92             throws javax.servlet.jsp.JspTagException JavaDoc {
93         return EVAL_PAGE;
94     }
95
96     public int doStartTag()
97             throws javax.servlet.jsp.JspTagException JavaDoc {
98         boolean loggedIn = true;
99         String JavaDoc userName = null;
100
101         // Get the current user from the servlet session
102 try {
103             HttpServletRequest JavaDoc request = (HttpServletRequest JavaDoc) pageContext.getRequest();
104             HttpServletResponse JavaDoc response = (HttpServletResponse JavaDoc) pageContext.getResponse();
105 // CheckLogin chk = CheckLogin.getInstance();
106 // chk.checkLogin(request, response);
107 CurrentLogin myLogin = (CurrentLogin) pageContext.getSession().getAttribute(CurrentLogin.LOGIN_KEY);
108             if (myLogin == null) {
109                 loggedIn = false;
110             } else {
111                 userName = myLogin.getUserName();
112                 if (userName == null || userName.equals("") || userName.equals(User.UNKNOWN_USER)) {
113                     loggedIn = false;
114                 }
115             }
116             if (inverse) {
117                 loggedIn = !loggedIn;
118             }
119             if (loggedIn) {
120                 return EVAL_BODY_INCLUDE;
121             } else {
122                 return SKIP_BODY;
123             }
124         } catch (Exception JavaDoc e) {
125             throw new JspTagException JavaDoc("Exception: " + e.getMessage());
126         }
127     }
128
129     public boolean getInverse() {
130         return inverse;
131     }
132
133     public void setInverse(boolean newInverse) {
134         inverse = newInverse;
135     }
136 } /* IfLoggedIn */
137
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