/*

 * Copyright (c) 2008, 2012, 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.

 */

/*

 * @test

 * @bug 6673164

 * @bug 6552334

 * @run main/othervm DnsFallback

 * @summary fix dns_fallback parse error, and use dns by default

 */

import java.io.*;

import java.lang.reflect.Method;

import sun.security.krb5.Config;

public class DnsFallback {

    static Method useDNS_Realm;

    public static void main(String[] args) throws Exception {

        useDNS_Realm = Config.class.getDeclaredMethod("useDNS_Realm");

        useDNS_Realm.setAccessible(true);

        // for 6673164

        check("true", "true", true);

        check("false", "true", false);

        check("true", "false", true);

        check("false", "false", false);

        check("true", null, true);

        check("false", null, false);

        check(null, "true", true);

        check(null, "false", false);

        // for 6552334

        check(null, null, true);

    }

    static void check(String realm, String fallback, boolean output)

            throws Exception {

        try (PrintStream ps =

                new PrintStream(new FileOutputStream("dnsfallback.conf"))) {

            ps.println("[libdefaults]\n");

            if (realm != null) {

                ps.println("dns_lookup_realm=" + realm);

            }

            if (fallback != null) {

                ps.println("dns_fallback=" + fallback);

            }

        }

        System.setProperty("java.security.krb5.conf", "dnsfallback.conf");

        Config.refresh();

        System.out.println("Testing " + realm + ", " + fallback + ", " + output);

        if (!useDNS_Realm.invoke(Config.getInstance()).equals(output)) {

            throw new Exception("Fail");

        }

    }

}