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Java > Open Source Codes > net > sf > jguard > core > authorization > domaincombiners > StackSubjectDomainCombiner


1 /*
2 jGuard is a security framework based on top of jaas (java authentication and authorization security).
3 it is written for web applications, to resolve simply, access control problems.
4 version $Name: $
5 http://sourceforge.net/projects/jguard/
6
7 Copyright (C) 2004 Charles GAY
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 jGuard project home page:
25 http://sourceforge.net/projects/jguard/
26
27 */
28 package net.sf.jguard.core.authorization.domaincombiners;
29
30 import java.net.URL JavaDoc;
31 import java.security.CodeSource JavaDoc;
32 import java.security.DomainCombiner JavaDoc;
33 import java.security.Principal JavaDoc;
34 import java.security.ProtectionDomain JavaDoc;
35 import java.security.cert.Certificate JavaDoc;
36
37 import javax.security.auth.Subject JavaDoc;
38
39 /**
40  * @author <a HREF="mailto:diabolo512@users.sourceforge.net">Charles Gay</a>
41  * @author <a HREF="mailto:vberetti@users.sourceforge.net">Vincent Beretti</a>
42  */
43 public class StackSubjectDomainCombiner implements DomainCombiner JavaDoc {
44     private Subject JavaDoc subject;
45
46     public StackSubjectDomainCombiner(Subject JavaDoc subj) {
47         this.subject = subj;
48     }
49
50     /**
51      * creates a new array of <code>ProtectionDomain</code>s
52      * adds on the top of the currentDomains a new ProtectionDomain with null CodeSource,
53      * a null classloader, empty permissions collection and the subject principals.<br>
54      * assignedDomains is not combined.
55      * @param currentDomains ProtectionDomain[]
56      * @param assignedDomains ProtectionDomain[]
57      */
58     public ProtectionDomain JavaDoc[] combine(ProtectionDomain JavaDoc[] currentDomains,
59             ProtectionDomain JavaDoc[] assignedDomains) {
60         ProtectionDomain JavaDoc[] combinedPd = new ProtectionDomain JavaDoc[currentDomains.length+1];
61         System.arraycopy(currentDomains,0,combinedPd,0,currentDomains.length);
62         CodeSource JavaDoc cs = new CodeSource JavaDoc((URL JavaDoc)null,(Certificate JavaDoc[])null);
63         combinedPd[currentDomains.length] = new ProtectionDomain JavaDoc(cs,null,null,
64                 (Principal JavaDoc[])subject.getPrincipals().toArray(new Principal JavaDoc[subject.getPrincipals().size()]));
65         return combinedPd;
66     }
67
68 }
69
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