source: fedd/abac-src/rbtm/engine/Sens.java @ df783c1

axis_examplecompt_changesinfo-opsversion-2.00version-3.01version-3.02
Last change on this file since df783c1 was 8780cbec, checked in by Jay Jacobs <Jay.Jacobs@…>, 15 years ago

ABAC sources from Cobham

  • Property mode set to 100644
File size: 1.6 KB
Line 
1package edu.stanford.peer.rbtm.engine;
2
3import edu.stanford.peer.rbtm.credential.*;
4import edu.stanford.peer.rbtm.util.*;
5
6import java.util.*;
7
8/**
9 * A predicate for determining whether a credential is sensitive.
10 */
11public class Sens implements Predicate {
12
13    /** A list of sensitive credentials for this predicate */
14    protected Vector sens;
15
16    /**
17     * Create a new sens predicate with no sensitive credentials.
18     */
19    public Sens() { sens = new Vector(); }
20
21    /**
22     * Create a new sens predicate with a list of pre-defined sensitive
23     * credentials.
24     */
25    public Sens(Vector creds) { 
26        sens = new Vector();
27        for(int i = 0; i < creds.size(); i++) {
28            try {
29                Role r = (Role)creds.elementAt(i);
30                sens.addElement(r);
31            }
32            catch(Exception ex) {
33                ex.printStackTrace();
34            }
35        }
36    }
37
38    /** Mark a credential as sensitive w/o exposing internal data structures */
39    public void addSensCred(Role role) { sens.add(role); }
40
41    /** Remove a credential from the sensitive list (opaquely) */
42    public void removeSensCred(Role role) { sens.remove(role); }
43
44    /**
45     * Predicate function to test whether the supplied role expression is
46     * sensitive or not. The obj must be a credential for the test to succeed.
47     *
48     * @param obj a credential instance for the predicate to test
49     * @return success of failure of the predicate
50     */
51    public boolean test(EntityExpression obj) {
52        if(!(obj instanceof Role))return true;
53        Role role = (Role)obj;
54        return (sens.contains(role));
55        /*
56        if(!sens.contains(role)) {
57            return false;
58        }
59        return true;
60        */
61    }
62   
63}
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