Hugo Benichi | ef50288 | 2017-09-01 01:23:32 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2017 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.connectivity; |
| 18 | |
| 19 | import static org.junit.Assert.assertFalse; |
| 20 | import static org.junit.Assert.assertNull; |
| 21 | import static org.junit.Assert.assertTrue; |
| 22 | import static org.mockito.Mockito.any; |
| 23 | import static org.mockito.Mockito.eq; |
| 24 | import static org.mockito.Mockito.times; |
| 25 | import static org.mockito.Mockito.verify; |
| 26 | import static org.mockito.Mockito.verifyNoMoreInteractions; |
| 27 | import static org.mockito.Mockito.when; |
| 28 | |
| 29 | import android.net.ConnectivityManager; |
| 30 | import android.net.InterfaceConfiguration; |
| 31 | import android.net.LinkAddress; |
| 32 | import android.net.LinkProperties; |
| 33 | import android.net.NetworkInfo; |
| 34 | import android.os.Handler; |
| 35 | import android.os.INetworkManagementService; |
| 36 | import android.os.test.TestLooper; |
| 37 | import android.support.test.filters.SmallTest; |
| 38 | import android.support.test.runner.AndroidJUnit4; |
| 39 | |
| 40 | import com.android.server.ConnectivityService; |
| 41 | |
| 42 | import org.junit.Before; |
| 43 | import org.junit.Test; |
| 44 | import org.junit.runner.RunWith; |
| 45 | import org.mockito.ArgumentCaptor; |
| 46 | import org.mockito.Mock; |
| 47 | import org.mockito.MockitoAnnotations; |
| 48 | |
| 49 | @RunWith(AndroidJUnit4.class) |
| 50 | @SmallTest |
| 51 | public class Nat464XlatTest { |
| 52 | |
| 53 | static final String BASE_IFACE = "test0"; |
| 54 | static final String STACKED_IFACE = "v4-test0"; |
| 55 | static final LinkAddress ADDR = new LinkAddress("192.0.2.5/29"); |
| 56 | |
| 57 | @Mock ConnectivityService mConnectivity; |
| 58 | @Mock INetworkManagementService mNms; |
| 59 | @Mock InterfaceConfiguration mConfig; |
| 60 | @Mock NetworkAgentInfo mNai; |
| 61 | |
| 62 | TestLooper mLooper; |
| 63 | Handler mHandler; |
| 64 | |
| 65 | Nat464Xlat makeNat464Xlat() { |
| 66 | return new Nat464Xlat(mNms, mNai); |
| 67 | } |
| 68 | |
| 69 | @Before |
| 70 | public void setUp() throws Exception { |
| 71 | mLooper = new TestLooper(); |
| 72 | mHandler = new Handler(mLooper.getLooper()); |
| 73 | |
| 74 | MockitoAnnotations.initMocks(this); |
| 75 | |
| 76 | mNai.linkProperties = new LinkProperties(); |
| 77 | mNai.linkProperties.setInterfaceName(BASE_IFACE); |
| 78 | mNai.networkInfo = new NetworkInfo(null); |
| 79 | mNai.networkInfo.setType(ConnectivityManager.TYPE_WIFI); |
| 80 | when(mNai.connService()).thenReturn(mConnectivity); |
| 81 | when(mNai.handler()).thenReturn(mHandler); |
| 82 | |
| 83 | when(mNms.getInterfaceConfig(eq(STACKED_IFACE))).thenReturn(mConfig); |
| 84 | when(mConfig.getLinkAddress()).thenReturn(ADDR); |
| 85 | } |
| 86 | |
| 87 | @Test |
Erik Kline | 3c18216 | 2017-09-21 17:28:10 +0900 | [diff] [blame] | 88 | public void testRequiresClat() throws Exception { |
| 89 | final int[] supportedTypes = { |
| 90 | ConnectivityManager.TYPE_MOBILE, |
| 91 | ConnectivityManager.TYPE_WIFI, |
| 92 | ConnectivityManager.TYPE_ETHERNET, |
| 93 | }; |
| 94 | |
| 95 | // NetworkInfo doesn't allow setting the State directly, but rather |
| 96 | // requires setting DetailedState in order set State as a side-effect. |
| 97 | final NetworkInfo.DetailedState[] supportedDetailedStates = { |
| 98 | NetworkInfo.DetailedState.CONNECTED, |
| 99 | NetworkInfo.DetailedState.SUSPENDED, |
| 100 | }; |
| 101 | |
| 102 | for (int type : supportedTypes) { |
| 103 | mNai.networkInfo.setType(type); |
| 104 | for (NetworkInfo.DetailedState state : supportedDetailedStates) { |
| 105 | mNai.networkInfo.setDetailedState(state, "reason", "extraInfo"); |
| 106 | assertTrue( |
| 107 | String.format("requiresClat expected for type=%d state=%s", type, state), |
| 108 | Nat464Xlat.requiresClat(mNai)); |
| 109 | } |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | @Test |
Hugo Benichi | ef50288 | 2017-09-01 01:23:32 +0000 | [diff] [blame] | 114 | public void testNormalStartAndStop() throws Exception { |
| 115 | Nat464Xlat nat = makeNat464Xlat(); |
| 116 | ArgumentCaptor<LinkProperties> c = ArgumentCaptor.forClass(LinkProperties.class); |
| 117 | |
| 118 | // ConnectivityService starts clat. |
| 119 | nat.start(); |
| 120 | |
| 121 | verify(mNms).registerObserver(eq(nat)); |
| 122 | verify(mNms).startClatd(eq(BASE_IFACE)); |
| 123 | |
| 124 | // Stacked interface up notification arrives. |
| 125 | nat.interfaceLinkStateChanged(STACKED_IFACE, true); |
| 126 | mLooper.dispatchNext(); |
| 127 | |
| 128 | verify(mNms).getInterfaceConfig(eq(STACKED_IFACE)); |
Hugo Benichi | ef50288 | 2017-09-01 01:23:32 +0000 | [diff] [blame] | 129 | verify(mConnectivity).handleUpdateLinkProperties(eq(mNai), c.capture()); |
| 130 | assertFalse(c.getValue().getStackedLinks().isEmpty()); |
| 131 | assertTrue(c.getValue().getAllInterfaceNames().contains(STACKED_IFACE)); |
| 132 | assertRunning(nat); |
| 133 | |
| 134 | // ConnectivityService stops clat (Network disconnects, IPv4 addr appears, ...). |
| 135 | nat.stop(); |
| 136 | |
| 137 | verify(mNms).stopClatd(eq(BASE_IFACE)); |
Hugo Benichi | ef50288 | 2017-09-01 01:23:32 +0000 | [diff] [blame] | 138 | |
| 139 | // Stacked interface removed notification arrives. |
| 140 | nat.interfaceRemoved(STACKED_IFACE); |
| 141 | mLooper.dispatchNext(); |
| 142 | |
| 143 | verify(mNms).unregisterObserver(eq(nat)); |
| 144 | verify(mConnectivity, times(2)).handleUpdateLinkProperties(eq(mNai), c.capture()); |
| 145 | assertTrue(c.getValue().getStackedLinks().isEmpty()); |
| 146 | assertFalse(c.getValue().getAllInterfaceNames().contains(STACKED_IFACE)); |
| 147 | assertIdle(nat); |
| 148 | |
| 149 | verifyNoMoreInteractions(mNms, mConnectivity); |
| 150 | } |
| 151 | |
| 152 | @Test |
| 153 | public void testClatdCrashWhileRunning() throws Exception { |
| 154 | Nat464Xlat nat = makeNat464Xlat(); |
| 155 | ArgumentCaptor<LinkProperties> c = ArgumentCaptor.forClass(LinkProperties.class); |
| 156 | |
| 157 | // ConnectivityService starts clat. |
| 158 | nat.start(); |
| 159 | |
| 160 | verify(mNms).registerObserver(eq(nat)); |
| 161 | verify(mNms).startClatd(eq(BASE_IFACE)); |
| 162 | |
| 163 | // Stacked interface up notification arrives. |
| 164 | nat.interfaceLinkStateChanged(STACKED_IFACE, true); |
| 165 | mLooper.dispatchNext(); |
| 166 | |
| 167 | verify(mNms).getInterfaceConfig(eq(STACKED_IFACE)); |
Hugo Benichi | ef50288 | 2017-09-01 01:23:32 +0000 | [diff] [blame] | 168 | verify(mConnectivity, times(1)).handleUpdateLinkProperties(eq(mNai), c.capture()); |
| 169 | assertFalse(c.getValue().getStackedLinks().isEmpty()); |
| 170 | assertTrue(c.getValue().getAllInterfaceNames().contains(STACKED_IFACE)); |
| 171 | assertRunning(nat); |
| 172 | |
| 173 | // Stacked interface removed notification arrives (clatd crashed, ...). |
| 174 | nat.interfaceRemoved(STACKED_IFACE); |
| 175 | mLooper.dispatchNext(); |
| 176 | |
| 177 | verify(mNms).unregisterObserver(eq(nat)); |
| 178 | verify(mNms).stopClatd(eq(BASE_IFACE)); |
Hugo Benichi | ef50288 | 2017-09-01 01:23:32 +0000 | [diff] [blame] | 179 | verify(mConnectivity, times(2)).handleUpdateLinkProperties(eq(mNai), c.capture()); |
| 180 | assertTrue(c.getValue().getStackedLinks().isEmpty()); |
| 181 | assertFalse(c.getValue().getAllInterfaceNames().contains(STACKED_IFACE)); |
| 182 | assertIdle(nat); |
| 183 | |
| 184 | // ConnectivityService stops clat: no-op. |
| 185 | nat.stop(); |
| 186 | |
| 187 | verifyNoMoreInteractions(mNms, mConnectivity); |
| 188 | } |
| 189 | |
| 190 | @Test |
| 191 | public void testStopBeforeClatdStarts() throws Exception { |
| 192 | Nat464Xlat nat = makeNat464Xlat(); |
| 193 | |
| 194 | // ConnectivityService starts clat. |
| 195 | nat.start(); |
| 196 | |
| 197 | verify(mNms).registerObserver(eq(nat)); |
| 198 | verify(mNms).startClatd(eq(BASE_IFACE)); |
| 199 | |
| 200 | // ConnectivityService immediately stops clat (Network disconnects, IPv4 addr appears, ...) |
| 201 | nat.stop(); |
| 202 | |
| 203 | verify(mNms).unregisterObserver(eq(nat)); |
| 204 | verify(mNms).stopClatd(eq(BASE_IFACE)); |
| 205 | assertIdle(nat); |
| 206 | |
| 207 | // In-flight interface up notification arrives: no-op |
| 208 | nat.interfaceLinkStateChanged(STACKED_IFACE, true); |
| 209 | mLooper.dispatchNext(); |
| 210 | |
| 211 | |
| 212 | // Interface removed notification arrives after stopClatd() takes effect: no-op. |
| 213 | nat.interfaceRemoved(STACKED_IFACE); |
| 214 | mLooper.dispatchNext(); |
| 215 | |
| 216 | assertIdle(nat); |
| 217 | |
| 218 | verifyNoMoreInteractions(mNms, mConnectivity); |
| 219 | } |
| 220 | |
| 221 | @Test |
| 222 | public void testStopAndClatdNeverStarts() throws Exception { |
| 223 | Nat464Xlat nat = makeNat464Xlat(); |
| 224 | |
| 225 | // ConnectivityService starts clat. |
| 226 | nat.start(); |
| 227 | |
| 228 | verify(mNms).registerObserver(eq(nat)); |
| 229 | verify(mNms).startClatd(eq(BASE_IFACE)); |
| 230 | |
| 231 | // ConnectivityService immediately stops clat (Network disconnects, IPv4 addr appears, ...) |
| 232 | nat.stop(); |
| 233 | |
| 234 | verify(mNms).unregisterObserver(eq(nat)); |
| 235 | verify(mNms).stopClatd(eq(BASE_IFACE)); |
| 236 | assertIdle(nat); |
| 237 | |
| 238 | verifyNoMoreInteractions(mNms, mConnectivity); |
| 239 | } |
| 240 | |
| 241 | static void assertIdle(Nat464Xlat nat) { |
| 242 | assertTrue("Nat464Xlat was not IDLE", !nat.isStarted()); |
| 243 | } |
| 244 | |
| 245 | static void assertRunning(Nat464Xlat nat) { |
| 246 | assertTrue("Nat464Xlat was not RUNNING", nat.isRunning()); |
| 247 | } |
| 248 | } |