/*

 * Copyright (c) 2002, 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.

 *

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 */

/**

 * @test

 * @bug 4531817

 * @summary Inet[46]Address.localHost need doPrivileged

 * @run main/othervm GetLocalHostWithSM

 * files needed: GetLocalHostWithSM.java, MyPrincipal.java, and policy.file

 */

import java.net.*;

import javax.security.auth.Subject;

import java.security.Principal;

import java.security.PrivilegedExceptionAction;

import java.util.*;

public class GetLocalHostWithSM {

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

            // try setting the local hostname

            try {

                System.setProperty("host.name", InetAddress.

                                                getLocalHost().

                                                getHostName());

            } catch (UnknownHostException e) {

                System.out.println("Cannot find the local hostname, " +

                        "no nameserver entry found");

            }

            String policyFileName = System.getProperty("test.src", ".") +

                          "/" + "policy.file";

            System.setProperty("java.security.policy", policyFileName);

            System.setSecurityManager(new SecurityManager());

            InetAddress localHost1 = null;

            InetAddress localHost2 = null;

            localHost1 = InetAddress.getLocalHost();

            Subject mySubject = new Subject();

            MyPrincipal userPrincipal = new MyPrincipal("test");

            mySubject.getPrincipals().add(userPrincipal);

            localHost2 = (InetAddress)Subject.doAsPrivileged(mySubject,

                                new MyAction(), null);

            if (localHost1.equals(localHost2)) {

                throw new RuntimeException("InetAddress.getLocalHost() test " +

                                           " fails. localHost2 should be " +

                                           " the real address instead of " +

                                           " the loopback address."+localHost2);

            }

        }

}

class MyAction implements PrivilegedExceptionAction {

    public Object run() throws Exception {

        return InetAddress.getLocalHost();

    }

}