/*
 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package version;

import java.security.AccessControlException;
import java.security.AccessController;
import java.security.Permission;
import java.security.PrivilegedAction;

public class Version {
    private static final Permission PERM1 = new RuntimePermission("setIO");
    private static final Permission PERM2 = new RuntimePermission("setFactory");

    public int getVersion() {
        checkPermission(PERM1, false);
        checkPermission(PERM2, true);
        return 9;
    }

    private void checkPermission(Permission perm, boolean expectException) {
        boolean getException = (Boolean) AccessController
                .doPrivileged((PrivilegedAction) () -> {
            try {
                AccessController.checkPermission(perm);
                return (Boolean) false;
            } catch (AccessControlException ex) {
                return (Boolean) true;
            }
        });

        if (expectException ^ getException) {
            String message = "Check Permission :" + perm + "\n ExpectException = "
                    + expectException + "\n getException = " + getException;
            throw new RuntimeException(message);
        }
    }
}