| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.networkstack.tethering; |
| |
| import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR; |
| import static android.net.RouteInfo.RTN_UNICAST; |
| import static android.net.ip.IpServer.STATE_LOCAL_ONLY; |
| import static android.net.ip.IpServer.STATE_TETHERED; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotEquals; |
| import static org.junit.Assert.assertNotNull; |
| import static org.mockito.ArgumentMatchers.anyString; |
| import static org.mockito.ArgumentMatchers.eq; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.reset; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.verifyNoMoreInteractions; |
| import static org.mockito.Mockito.when; |
| |
| import android.net.InetAddresses; |
| import android.net.IpPrefix; |
| import android.net.LinkAddress; |
| import android.net.LinkProperties; |
| import android.net.Network; |
| import android.net.NetworkCapabilities; |
| import android.net.RouteInfo; |
| import android.net.ip.IpServer; |
| import android.net.util.SharedLog; |
| |
| import androidx.test.filters.SmallTest; |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.mockito.ArgumentCaptor; |
| import org.mockito.Mock; |
| import org.mockito.MockitoAnnotations; |
| |
| import java.net.InetAddress; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| @RunWith(AndroidJUnit4.class) |
| @SmallTest |
| public class IPv6TetheringCoordinatorTest { |
| private static final String TEST_DNS_SERVER = "2001:4860:4860::8888"; |
| private static final String TEST_INTERFACE = "test_rmnet0"; |
| private static final String TEST_IPV6_ADDRESS = "2001:db8::1/64"; |
| private static final String TEST_IPV4_ADDRESS = "192.168.100.1/24"; |
| |
| private IPv6TetheringCoordinator mIPv6TetheringCoordinator; |
| private ArrayList<IpServer> mNotifyList; |
| |
| @Mock private SharedLog mSharedLog; |
| |
| @Before |
| public void setUp() throws Exception { |
| MockitoAnnotations.initMocks(this); |
| when(mSharedLog.forSubComponent(anyString())).thenReturn(mSharedLog); |
| mNotifyList = new ArrayList<IpServer>(); |
| mIPv6TetheringCoordinator = new IPv6TetheringCoordinator(mNotifyList, mSharedLog); |
| } |
| |
| private UpstreamNetworkState createDualStackUpstream(final int transportType) { |
| final Network network = mock(Network.class); |
| final NetworkCapabilities netCap = |
| new NetworkCapabilities.Builder().addTransportType(transportType).build(); |
| final InetAddress dns = InetAddresses.parseNumericAddress(TEST_DNS_SERVER); |
| final LinkProperties linkProp = new LinkProperties(); |
| linkProp.setInterfaceName(TEST_INTERFACE); |
| linkProp.addLinkAddress(new LinkAddress(TEST_IPV6_ADDRESS)); |
| linkProp.addLinkAddress(new LinkAddress(TEST_IPV4_ADDRESS)); |
| linkProp.addRoute(new RouteInfo(new IpPrefix("::/0"), null, TEST_INTERFACE, RTN_UNICAST)); |
| linkProp.addRoute(new RouteInfo(new IpPrefix("0.0.0.0/0"), null, TEST_INTERFACE, |
| RTN_UNICAST)); |
| linkProp.addDnsServer(dns); |
| return new UpstreamNetworkState(linkProp, netCap, network); |
| } |
| |
| private void assertOnlyOneV6AddressAndNoV4(LinkProperties lp) { |
| assertEquals(lp.getInterfaceName(), TEST_INTERFACE); |
| assertFalse(lp.hasIpv4Address()); |
| final List<LinkAddress> addresses = lp.getLinkAddresses(); |
| assertEquals(addresses.size(), 1); |
| final LinkAddress v6Address = addresses.get(0); |
| assertEquals(v6Address, new LinkAddress(TEST_IPV6_ADDRESS)); |
| } |
| |
| @Test |
| public void testUpdateIpv6Upstream() throws Exception { |
| // 1. Add first IpServer. |
| final IpServer firstServer = mock(IpServer.class); |
| mNotifyList.add(firstServer); |
| mIPv6TetheringCoordinator.addActiveDownstream(firstServer, STATE_TETHERED); |
| verify(firstServer).sendMessage(IpServer.CMD_IPV6_TETHER_UPDATE, 0, 0, null); |
| verifyNoMoreInteractions(firstServer); |
| |
| // 2. Add second IpServer and it would not have ipv6 tethering. |
| final IpServer secondServer = mock(IpServer.class); |
| mNotifyList.add(secondServer); |
| mIPv6TetheringCoordinator.addActiveDownstream(secondServer, STATE_LOCAL_ONLY); |
| verifyNoMoreInteractions(secondServer); |
| reset(firstServer, secondServer); |
| |
| // 3. No upstream. |
| mIPv6TetheringCoordinator.updateUpstreamNetworkState(null); |
| verify(secondServer).sendMessage(IpServer.CMD_IPV6_TETHER_UPDATE, 0, 0, null); |
| reset(firstServer, secondServer); |
| |
| // 4. Update ipv6 mobile upstream. |
| final UpstreamNetworkState mobileUpstream = createDualStackUpstream(TRANSPORT_CELLULAR); |
| final ArgumentCaptor<LinkProperties> lp = ArgumentCaptor.forClass(LinkProperties.class); |
| mIPv6TetheringCoordinator.updateUpstreamNetworkState(mobileUpstream); |
| verify(firstServer).sendMessage(eq(IpServer.CMD_IPV6_TETHER_UPDATE), eq(0), eq(0), |
| lp.capture()); |
| final LinkProperties v6OnlyLink = lp.getValue(); |
| assertOnlyOneV6AddressAndNoV4(v6OnlyLink); |
| verifyNoMoreInteractions(firstServer); |
| verifyNoMoreInteractions(secondServer); |
| reset(firstServer, secondServer); |
| |
| // 5. Remove first IpServer. |
| mNotifyList.remove(firstServer); |
| mIPv6TetheringCoordinator.removeActiveDownstream(firstServer); |
| verify(firstServer).sendMessage(IpServer.CMD_IPV6_TETHER_UPDATE, 0, 0, null); |
| verify(secondServer).sendMessage(eq(IpServer.CMD_IPV6_TETHER_UPDATE), eq(0), eq(0), |
| lp.capture()); |
| final LinkProperties localOnlyLink = lp.getValue(); |
| assertNotNull(localOnlyLink); |
| assertNotEquals(localOnlyLink, v6OnlyLink); |
| reset(firstServer, secondServer); |
| |
| // 6. Remove second IpServer. |
| mNotifyList.remove(secondServer); |
| mIPv6TetheringCoordinator.removeActiveDownstream(secondServer); |
| verifyNoMoreInteractions(firstServer); |
| verify(secondServer).sendMessage(IpServer.CMD_IPV6_TETHER_UPDATE, 0, 0, null); |
| } |
| } |