/*

 * Copyright (c) 2001, 2017, 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 4422122

 * @summary Test that MulticastSocket.getInterface returns the

 *          same InetAddress set by MulticastSocket.setInterface

 * @library /test/lib

 * @build jdk.test.lib.NetworkConfiguration

 *        jdk.test.lib.Platform

 * @run main TestInterfaces

 */

import jdk.test.lib.NetworkConfiguration;

import java.net.*;

import java.util.Arrays;

import java.util.Collections;

import java.util.Enumeration;

import java.io.IOException;

public class TestInterfaces {

    static final boolean isWindows = System.getProperty("os.name").startsWith("Windows");

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

        int failures = 0;

        MulticastSocket soc = new MulticastSocket();

        Enumeration nifs = NetworkInterface.getNetworkInterfaces();

        while (nifs.hasMoreElements()) {

            NetworkInterface ni = (NetworkInterface)nifs.nextElement();

            // JDK-8022963, Skip (Windows) Teredo Tunneling Pseudo-Interface

            String dName = ni.getDisplayName();

            if (isWindows && dName != null && dName.contains("Teredo"))

                continue;

            // Skip those interfaces not up or not support multicast

            if (!ni.isUp() || !ni.supportsMulticast())

                continue;

            /*

             * Test MulticastSocket.getInterface

             */

            System.out.println("Testing network interface " + ni);

            Enumeration addrs = ni.getInetAddresses();

            while (addrs.hasMoreElements()) {

                InetAddress ia = (InetAddress)addrs.nextElement();

                System.out.println("********************************");

                System.out.println("MulticastSocket.setInterface(" + ia + ")");

                try {

                    soc.setInterface(ia);

                } catch (IOException ioe) {

                    System.err.println("Can't set interface to: " + ia

                        + " " + ioe.getMessage());

                    continue;

                }

                InetAddress curr = soc.getInterface();

                if (!curr.equals(ia)) {

                    System.err.println("NetworkInterface under test " + ni);

                    displayInterfaceInformation(ni);

                    System.err.println("MulticastSocket.getInterface returned: " + curr);

                    System.err.println("Failed! Expected: " + ia);

                    failures++;

                } else {

                    System.out.println("Passed.");

                }

            }

            /*

             * Test MulticastSocket.getNetworkInterface

             */

            System.out.println("********************************");

            System.out.println("MulticastSocket.setNetworkInterface(" +

                ni.getName() + ")");

            try {

                soc.setNetworkInterface(ni);

            } catch (IOException ioe) {

                System.err.println("Can't set interface to: " + ni.getName()

                        + " " + ioe.getMessage());

                continue;

            }

            NetworkInterface curr = soc.getNetworkInterface();

            if (!curr.equals(ni)) {

                System.err.println("MulticastSocket.getNetworkInterface returned: " + curr);

                System.err.println("Failed! Expected: " + ni);

                System.err.println("NetworkInterface details for curr variable ");

                displayInterfaceInformation(curr);

                System.err.println("NetworkInterface details for ni variable ");

                displayInterfaceInformation(ni) ;

                failures++;

            } else {

                System.out.println("Passed.");

            }

        }

        if (failures > 0) {

            System.err.println("********************************");

            NetworkConfiguration.printSystemConfiguration(System.err);

            System.out.println("********************************");

            throw new Exception(failures + " test(s) failed!!!");

        }

    }

    static void displayInterfaceInformation(NetworkInterface netint) throws SocketException {

        System.err.println("Display name: " + netint.getDisplayName());

        System.err.println("Name: " + netint.getName());

        Enumeration<InetAddress> inetAddresses = netint.getInetAddresses();

        for (InetAddress inetAddress : Collections.list(inetAddresses))

            System.err.println("InetAddress: " + inetAddress);

        System.err.println("Up? " + netint.isUp());

        System.err.println("Loopback? " + netint.isLoopback());

        System.err.println("PointToPoint? " + netint.isPointToPoint());

        System.err.println("Supports multicast? " + netint.supportsMulticast());

        System.err.println("Virtual? " + netint.isVirtual());

        System.err.println("Hardware address: " +

                Arrays.toString(netint.getHardwareAddress()));

        System.err.println("MTU: " + netint.getMTU());

        System.err.println("Index: " + netint.getIndex());

        System.err.println();

    }

}