| /* |
| * Copyright (c) 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. |
| */ |
| |
| package jdk.testlibrary; |
| |
| import java.io.PrintStream; |
| import java.io.UncheckedIOException; |
| import java.io.IOException; |
| import java.net.Inet4Address; |
| import java.net.Inet6Address; |
| import java.net.InetAddress; |
| import java.net.NetworkInterface; |
| import java.util.Arrays; |
| import java.util.HashMap; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.function.Predicate; |
| import java.util.stream.Stream; |
| import static java.net.NetworkInterface.getNetworkInterfaces; |
| import static java.util.Collections.list; |
| |
| /** |
| * Helper class for retrieving network interfaces and local addresses |
| * suitable for testing. |
| */ |
| public class NetworkConfiguration { |
| |
| static final boolean isWindows = |
| System.getProperty("os.name").startsWith("Windows"); |
| static final boolean isMacOS = |
| System.getProperty("os.name").contains("OS X"); |
| |
| private Map<NetworkInterface,List<Inet4Address>> ip4Interfaces; |
| private Map<NetworkInterface,List<Inet6Address>> ip6Interfaces; |
| |
| private NetworkConfiguration(Map<NetworkInterface,List<Inet4Address>> ip4Interfaces, |
| Map<NetworkInterface,List<Inet6Address>> ip6Interfaces) |
| { |
| this.ip4Interfaces = ip4Interfaces; |
| this.ip6Interfaces = ip6Interfaces; |
| } |
| |
| /** |
| * Returns a stream of interfaces suitable for functional tests. |
| */ |
| public Stream<NetworkInterface> interfaces() { |
| return Stream.concat(ip4Interfaces(), ip6Interfaces()) |
| .distinct(); |
| } |
| |
| /** |
| * Returns a stream of interfaces suitable for IPv4 functional tests. |
| */ |
| public Stream<NetworkInterface> ip4Interfaces() { |
| return ip4Interfaces.keySet().stream() |
| .filter(NetworkConfiguration::isNotExcludedInterface) |
| .filter(hasIp4Addresses); |
| } |
| |
| /** |
| * Returns a stream of interfaces suitable for IPv6 functional tests. |
| */ |
| public Stream<NetworkInterface> ip6Interfaces() { |
| return ip6Interfaces.keySet().stream() |
| .filter(NetworkConfiguration::isNotExcludedInterface) |
| .filter(hasIp6Addresses); |
| } |
| |
| private static boolean isNotExcludedInterface(NetworkInterface nif) { |
| if (isMacOS && nif.getName().contains("awdl")) |
| return false; |
| String dName = nif.getDisplayName(); |
| if (isWindows && dName != null && dName.contains("Teredo")) |
| return false; |
| return true; |
| } |
| |
| private final Predicate<NetworkInterface> hasIp4Addresses = nif -> { |
| Optional<?> addr = ip4Interfaces.get(nif).stream() |
| .filter(a -> !a.isAnyLocalAddress()) |
| .findAny(); |
| |
| return addr.isPresent(); |
| }; |
| |
| private final Predicate<NetworkInterface> hasIp6Addresses = nif -> { |
| Optional<?> addr = ip6Interfaces.get(nif).stream() |
| .filter(a -> !a.isAnyLocalAddress()) |
| .findAny(); |
| |
| return addr.isPresent(); |
| }; |
| |
| |
| /** |
| * Returns a stream of interfaces suitable for IPv4 multicast tests. |
| */ |
| public Stream<NetworkInterface> ip4MulticastInterfaces() { |
| return ip4Interfaces().filter(supportsIp4Multicast); |
| } |
| |
| /** |
| * Returns a stream of interfaces suitable for IPv6 multicast tests. |
| */ |
| public Stream<NetworkInterface> ip6MulticastInterfaces() { |
| return ip6Interfaces().filter(supportsIp6Multicast); |
| } |
| |
| private final Predicate<NetworkInterface> supportsIp4Multicast = nif -> { |
| try { |
| if (!nif.supportsMulticast() || nif.isLoopback()) |
| return false; |
| |
| Optional<?> addr = ip4Interfaces.get(nif).stream() |
| .filter(a -> !a.isAnyLocalAddress()) |
| .findAny(); |
| |
| return addr.isPresent(); |
| } catch (IOException e) { |
| throw new UncheckedIOException(e); |
| } |
| }; |
| |
| private final Predicate<NetworkInterface> supportsIp6Multicast = nif -> { |
| try { |
| if (!nif.supportsMulticast() || nif.isLoopback()) |
| return false; |
| |
| Optional<?> addr = ip6Interfaces.get(nif).stream() |
| .filter(a -> !a.isAnyLocalAddress()) |
| .findAny(); |
| |
| return addr.isPresent(); |
| } catch (IOException e) { |
| throw new UncheckedIOException(e); |
| } |
| }; |
| |
| /** |
| * Returns all addresses on all "functional" interfaces. |
| */ |
| public Stream<InetAddress> addresses(NetworkInterface nif) { |
| return Stream.concat(ip4Interfaces.get(nif).stream(), |
| ip6Interfaces.get(nif).stream()); |
| } |
| |
| /** |
| * Returns all IPv4 addresses on all "functional" interfaces. |
| */ |
| public Stream<Inet4Address> ip4Addresses() { |
| return ip4Interfaces().flatMap(nif -> ip4Addresses(nif)); |
| } |
| |
| /** |
| * Returns all IPv6 addresses on all "functional" interfaces. |
| */ |
| public Stream<Inet6Address> ip6Addresses() { |
| return ip6Interfaces().flatMap(nif -> ip6Addresses(nif)); |
| } |
| |
| /** |
| * Returns all IPv4 addresses the given interface. |
| */ |
| public Stream<Inet4Address> ip4Addresses(NetworkInterface nif) { |
| return ip4Interfaces.get(nif).stream(); |
| } |
| |
| /** |
| * Returns all IPv6 addresses for the given interface. |
| */ |
| public Stream<Inet6Address> ip6Addresses(NetworkInterface nif) { |
| return ip6Interfaces.get(nif).stream(); |
| } |
| |
| /** |
| * Return a NetworkConfiguration instance. |
| */ |
| public static NetworkConfiguration probe() throws IOException { |
| Map<NetworkInterface, List<Inet4Address>> ip4Interfaces = new HashMap<>(); |
| Map<NetworkInterface, List<Inet6Address>> ip6Interfaces = new HashMap<>(); |
| |
| List<NetworkInterface> nifs = list(getNetworkInterfaces()); |
| for (NetworkInterface nif : nifs) { |
| // ignore interfaces that are down |
| if (!nif.isUp() || nif.isPointToPoint()) |
| continue; |
| |
| List<Inet4Address> ip4Addresses = new LinkedList<>(); |
| List<Inet6Address> ip6Addresses = new LinkedList<>(); |
| ip4Interfaces.put(nif, ip4Addresses); |
| ip6Interfaces.put(nif, ip6Addresses); |
| for (InetAddress addr : list(nif.getInetAddresses())) { |
| if (addr instanceof Inet4Address) |
| ip4Addresses.add((Inet4Address)addr); |
| else if (addr instanceof Inet6Address) |
| ip6Addresses.add((Inet6Address)addr); |
| } |
| } |
| return new NetworkConfiguration(ip4Interfaces, ip6Interfaces); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| interfaces().forEach(nif -> sb.append(interfaceInformation(nif))); |
| return sb.toString(); |
| } |
| |
| /** Returns detailed information for the given interface. */ |
| public static String interfaceInformation(NetworkInterface nif) { |
| StringBuilder sb = new StringBuilder(); |
| try { |
| sb.append("Display name: " + nif.getDisplayName() + "\n"); |
| sb.append("Name: " + nif.getName() + "\n"); |
| for (InetAddress inetAddress : list(nif.getInetAddresses())) |
| sb.append("InetAddress: " + inetAddress + "\n"); |
| sb.append("Up? " + nif.isUp() + "\n"); |
| sb.append("Loopback? " + nif.isLoopback() + "\n"); |
| sb.append("PointToPoint? " + nif.isPointToPoint() + "\n"); |
| sb.append("Supports multicast? " + nif.supportsMulticast() + "\n"); |
| sb.append("Virtual? " + nif.isVirtual() + "\n"); |
| sb.append("Hardware address: " + |
| Arrays.toString(nif.getHardwareAddress()) + "\n"); |
| sb.append("MTU: " + nif.getMTU() + "\n"); |
| sb.append("Index: " + nif.getIndex() + "\n"); |
| sb.append("\n"); |
| return sb.toString(); |
| } catch (IOException e) { |
| throw new UncheckedIOException(e); |
| } |
| } |
| |
| /** Prints all the system interface information to the give stream. */ |
| public static void printSystemConfiguration(PrintStream out) { |
| try { |
| out.println("*** all system network interface configuration ***"); |
| List<NetworkInterface> nifs = list(getNetworkInterfaces()); |
| for (NetworkInterface nif : nifs) |
| out.print(interfaceInformation(nif)); |
| out.println("*** end ***"); |
| } catch (IOException e) { |
| throw new UncheckedIOException(e); |
| } |
| } |
| } |