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Java > Open Source Codes > org > jboss > aop > instrument > SecurityActions


1 /*
2 * JBoss, Home of Professional Open Source
3 * Copyright 2005, JBoss Inc., and individual contributors as indicated
4 * by the @authors tag. See the copyright.txt in the distribution for a
5 * full listing of individual contributors.
6 *
7 * This is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Lesser General Public License as
9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * This software is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this software; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21 */
22 package org.jboss.aop.instrument;
23
24 import java.lang.reflect.AccessibleObject JavaDoc;
25 import java.security.AccessController JavaDoc;
26 import java.security.PrivilegedActionException JavaDoc;
27 import java.security.PrivilegedExceptionAction JavaDoc;
28
29 /**
30  *
31  * @author <a HREF="kabir.khan@jboss.com">Kabir Khan</a>
32  * @version $Revision: 45976 $
33  */
34 class SecurityActions
35 {
36    interface SetAccessibleAction
37    {
38       void setAccessible(AccessibleObject JavaDoc accessibleObject);
39       
40       SetAccessibleAction PRIVILEGED = new SetAccessibleAction()
41       {
42          public void setAccessible(final AccessibleObject JavaDoc accessibleObject)
43          {
44             try
45             {
46                AccessController.doPrivileged(new PrivilegedExceptionAction JavaDoc()
47                {
48                   public Object JavaDoc run() throws Exception JavaDoc
49                   {
50                      accessibleObject.setAccessible(true);
51                      return null;
52                   }
53                });
54             }
55             catch (PrivilegedActionException JavaDoc e)
56             {
57                throw new RuntimeException JavaDoc("Error setting " + accessibleObject + " as accessible ", e.getException());
58             }
59          }
60       };
61
62       SetAccessibleAction NON_PRIVILEGED = new SetAccessibleAction()
63       {
64          public void setAccessible(AccessibleObject JavaDoc accessibleObject)
65          {
66             accessibleObject.setAccessible(true);
67          }
68       };
69    }
70    static void setAccessible(AccessibleObject JavaDoc accessibleObject)
71    {
72       if (System.getSecurityManager() == null)
73       {
74          SetAccessibleAction.NON_PRIVILEGED.setAccessible(accessibleObject);
75       }
76       else
77       {
78          SetAccessibleAction.PRIVILEGED.setAccessible(accessibleObject);
79       }
80    }
81 }
82
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