1/*
2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24package version;
25
26import java.security.AccessControlException;
27import java.security.AccessController;
28import java.security.Permission;
29import java.security.PrivilegedAction;
30
31public class Version {
32    private static final Permission PERM1 = new RuntimePermission("setIO");
33    private static final Permission PERM2 = new RuntimePermission("setFactory");
34
35    public int getVersion() {
36        checkPermission(PERM1, false);
37        checkPermission(PERM2, true);
38        return 9;
39    }
40
41    private void checkPermission(Permission perm, boolean expectException) {
42        boolean getException = (Boolean) AccessController
43                .doPrivileged((PrivilegedAction) () -> {
44            try {
45                AccessController.checkPermission(perm);
46                return (Boolean) false;
47            } catch (AccessControlException ex) {
48                return (Boolean) true;
49            }
50        });
51
52        if (expectException ^ getException) {
53            String message = "Check Permission :" + perm + "\n ExpectException = "
54                    + expectException + "\n getException = " + getException;
55            throw new RuntimeException(message);
56        }
57    }
58}
59