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Java > Open Source Codes > org > dbforms > config > GrantedPrivileges


1 /*
2  * $Header: /cvsroot/jdbforms/dbforms/src/org/dbforms/config/GrantedPrivileges.java,v 1.8 2004/10/25 20:41:49 hkollmann Exp $
3  * $Revision: 1.8 $
4  * $Date: 2004/10/25 20:41:49 $
5  *
6  * DbForms - a Rapid Application Development Framework
7  * Copyright (C) 2001 Joachim Peer <joepeer@excite.com>
8  *
9  * This library is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22  */
23
24 package org.dbforms.config;
25
26 import org.apache.commons.logging.Log;
27 import org.apache.commons.logging.LogFactory;
28
29 import org.dbforms.util.StringUtil;
30
31 import java.util.Vector JavaDoc;
32
33 import javax.servlet.http.HttpServletRequest JavaDoc;
34
35
36
37 /**
38  * <p>
39  * This class represents a "granted-privileges"-tag in dbforms-config.xml
40  * </p>
41  *
42  * @author Joachim Peer
43  */
44 public class GrantedPrivileges implements java.io.Serializable JavaDoc {
45    private static Log logCat = LogFactory.getLog(GrantedPrivileges.class
46                                                  .getName()); // logging category for this class
47
48    /** DOCUMENT ME! */
49    public static final int PRIVILEG_SELECT = 0;
50
51    /** DOCUMENT ME! */
52    public static final int PRIVILEG_INSERT = 1;
53
54    /** DOCUMENT ME! */
55    public static final int PRIVILEG_UPDATE = 2;
56
57    /** DOCUMENT ME! */
58    public static final int PRIVILEG_DELETE = 3;
59    private Vector JavaDoc[] grantedRoles;
60
61    /**
62     * Creates a new GrantedPrivileges object.
63     */
64    public GrantedPrivileges() {
65       grantedRoles = new Vector JavaDoc[4];
66
67       //conditions = new Hashtable();
68 }
69
70    /**
71     * DOCUMENT ME!
72     *
73     * @param delete DOCUMENT ME!
74     */
75    public void setDelete(String JavaDoc delete) {
76       logCat.info("delete");
77       grantedRoles[PRIVILEG_DELETE] = StringUtil.splitString(delete, ",;~");
78    }
79
80
81    /**
82     * DOCUMENT ME!
83     *
84     * @param insert DOCUMENT ME!
85     */
86    public void setInsert(String JavaDoc insert) {
87       logCat.info("insert");
88       grantedRoles[PRIVILEG_INSERT] = StringUtil.splitString(insert, ",;~");
89    }
90
91
92    /**
93     * DOCUMENT ME!
94     *
95     * @param select DOCUMENT ME!
96     */
97    public void setSelect(String JavaDoc select) {
98       logCat.info("select");
99       grantedRoles[PRIVILEG_SELECT] = StringUtil.splitString(select, ",;~");
100    }
101
102
103    /**
104     * DOCUMENT ME!
105     *
106     * @param update DOCUMENT ME!
107     */
108    public void setUpdate(String JavaDoc update) {
109       logCat.info("update");
110       grantedRoles[PRIVILEG_UPDATE] = StringUtil.splitString(update, ",;~");
111    }
112
113
114    /**
115     * DOCUMENT ME!
116     *
117     * @param request DOCUMENT ME!
118     * @param privileg DOCUMENT ME!
119     *
120     * @return DOCUMENT ME!
121     */
122    public boolean hasUserPrivileg(HttpServletRequest JavaDoc request,
123                                   int privileg) {
124       if (grantedRoles[privileg] == null) {
125          return true; // if no constraints specified -> wildcard access ;-)
126 }
127
128       for (int i = 0; i < grantedRoles[privileg].size(); i++) {
129          String JavaDoc aGrantedRole = (String JavaDoc) grantedRoles[privileg].elementAt(i);
130
131          if (request.isUserInRole(aGrantedRole)) {
132             return true; // if the user is InRole(aGrantedRole) then let him go on :=)
133 }
134       }
135
136       return false; // otherwise we must deny the operation
137 }
138 }
139
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