01: /* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
02: *
03: * ***** BEGIN LICENSE BLOCK *****
04: * Version: MPL 1.1/GPL 2.0
05: *
06: * The contents of this file are subject to the Mozilla Public License Version
07: * 1.1 (the "License"); you may not use this file except in compliance with
08: * the License. You may obtain a copy of the License at
09: * http://www.mozilla.org/MPL/
10: *
11: * Software distributed under the License is distributed on an "AS IS" basis,
12: * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13: * for the specific language governing rights and limitations under the
14: * License.
15: *
16: * The Original Code is Rhino code, released
17: * May 6, 1999.
18: *
19: * The Initial Developer of the Original Code is
20: * Netscape Communications Corporation.
21: * Portions created by the Initial Developer are Copyright (C) 1997-1999
22: * the Initial Developer. All Rights Reserved.
23: *
24: * Contributor(s):
25: * Norris Boyd
26: * Igor Bukanov
27: *
28: * Alternatively, the contents of this file may be used under the terms of
29: * the GNU General Public License Version 2 or later (the "GPL"), in which
30: * case the provisions of the GPL are applicable instead of those above. If
31: * you wish to allow use of your version of this file only under the terms of
32: * the GPL and not to allow others to use your version of this file under the
33: * MPL, indicate your decision by deleting the provisions above and replacing
34: * them with the notice and other provisions required by the GPL. If you do
35: * not delete the provisions above, a recipient may use your version of this
36: * file under either the MPL or the GPL.
37: *
38: * ***** END LICENSE BLOCK ***** */
39:
40: package org.mozilla.javascript;
41:
42: import java.security.AccessController;
43: import java.security.PrivilegedAction;
44: import java.security.ProtectionDomain;
45:
46: /**
47: * @author Attila Szegedi
48: */
49: public class SecurityUtilities {
50: /**
51: * Retrieves a system property within a privileged block. Use it only when
52: * the property is used from within Rhino code and is not passed out of it.
53: * @param name the name of the system property
54: * @return the value of the system property
55: */
56: public static String getSystemProperty(final String name) {
57: return (String) AccessController
58: .doPrivileged(new PrivilegedAction() {
59: public Object run() {
60: return System.getProperty(name);
61: }
62: });
63: }
64:
65: public static ProtectionDomain getProtectionDomain(final Class clazz) {
66: return (ProtectionDomain) AccessController
67: .doPrivileged(new PrivilegedAction() {
68: public Object run() {
69: return clazz.getProtectionDomain();
70: }
71: });
72: }
73: }
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