KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > snipsnap > jsp > UserAuth


1 /*
2  * This file is part of "SnipSnap Wiki/Weblog".
3  *
4  * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
5  * All Rights Reserved.
6  *
7  * Please visit http://snipsnap.org/ for updates and contact.
8  *
9  * --LICENSE NOTICE--
10  * This program is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU General Public License
12  * as published by the Free Software Foundation; either version 2
13  * of the License, or (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23  * --LICENSE NOTICE--
24  */
25 package org.snipsnap.jsp;
26
27 import org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager;
28 import org.radeox.util.logging.Logger;
29 import org.snipsnap.app.Application;
30 import org.snipsnap.snip.Snip;
31 import org.snipsnap.snip.SnipSpaceFactory;
32 import org.snipsnap.user.Roles;
33 import org.snipsnap.user.Security;
34 import org.snipsnap.user.User;
35
36 import javax.servlet.jsp.JspException JavaDoc;
37 import javax.servlet.jsp.JspTagException JavaDoc;
38 import javax.servlet.jsp.jstl.core.ConditionalTagSupport;
39 import java.util.StringTokenizer JavaDoc;
40
41
42 public class UserAuth extends ConditionalTagSupport {
43   protected Roles roles;
44   protected Snip snip;
45
46   protected boolean invertCheck = false;
47
48   public void setName(String JavaDoc snip) {
49     try {
50       String JavaDoc snipName = (String JavaDoc) ExpressionEvaluatorManager.evaluate("snip", snip, String JavaDoc.class, this, pageContext);
51       this.snip = SnipSpaceFactory.getInstance().load(snipName);
52     } catch (JspException JavaDoc e) {
53       Logger.warn("unable to evaluate expression", e);
54     }
55   }
56
57   public void setSnip(String JavaDoc snip) {
58     try {
59       this.snip = (Snip) ExpressionEvaluatorManager.evaluate("snip", snip, Snip.class, this, pageContext);
60     } catch (JspException JavaDoc e) {
61       Logger.warn("unable to evaluate expression", e);
62     }
63   }
64
65   public void setRoles(String JavaDoc roles) {
66     StringTokenizer JavaDoc tok = new StringTokenizer JavaDoc(roles, ":,");
67     this.roles = new Roles();
68     while (tok.hasMoreTokens()) {
69       String JavaDoc token = tok.nextToken();
70       this.roles.add(token);
71     }
72   }
73
74
75   public void setInvert(Boolean JavaDoc value) {
76     invertCheck = value.booleanValue();
77   }
78
79   protected boolean condition() throws JspTagException JavaDoc {
80     Application app = (Application) pageContext.findAttribute("app");
81     User user = app.getUser();
82     if (snip != null) {
83       boolean isTrue = Security.hasRoles(user, snip, roles);
84       return (invertCheck ? !isTrue : isTrue);
85     } else {
86       boolean isTrue = Security.hasRoles(user, roles);
87       return (invertCheck ? !isTrue : isTrue);
88     }
89   }
90 }
91
Popular Tags