bpetrivs | a710195 | 2019-02-07 16:01:24 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 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; |
| 18 | |
| 19 | import static com.android.dx.mockito.inline.extended.ExtendedMockito.anyBoolean; |
| 20 | import static com.android.dx.mockito.inline.extended.ExtendedMockito.anyInt; |
| 21 | import static com.android.dx.mockito.inline.extended.ExtendedMockito.anyLong; |
| 22 | import static com.android.dx.mockito.inline.extended.ExtendedMockito.anyString; |
| 23 | import static com.android.dx.mockito.inline.extended.ExtendedMockito.doAnswer; |
| 24 | import static com.android.dx.mockito.inline.extended.ExtendedMockito.doReturn; |
| 25 | import static com.android.dx.mockito.inline.extended.ExtendedMockito.verify; |
| 26 | import static com.android.dx.mockito.inline.extended.ExtendedMockito.when; |
| 27 | |
| 28 | import static org.junit.Assert.assertEquals; |
| 29 | import static org.junit.Assert.assertTrue; |
| 30 | import static org.mockito.ArgumentMatchers.eq; |
| 31 | import static org.mockito.ArgumentMatchers.isNull; |
| 32 | |
| 33 | import android.content.ContentResolver; |
| 34 | import android.content.Context; |
| 35 | import android.os.RecoverySystem; |
| 36 | import android.os.SystemProperties; |
| 37 | import android.os.UserHandle; |
| 38 | import android.provider.Settings; |
| 39 | |
| 40 | import com.android.dx.mockito.inline.extended.ExtendedMockito; |
| 41 | |
| 42 | import org.junit.After; |
| 43 | import org.junit.Before; |
| 44 | import org.junit.Test; |
| 45 | import org.mockito.Answers; |
| 46 | import org.mockito.Mock; |
| 47 | import org.mockito.MockitoSession; |
| 48 | import org.mockito.quality.Strictness; |
| 49 | import org.mockito.stubbing.Answer; |
| 50 | |
| 51 | import java.util.HashMap; |
| 52 | |
| 53 | /** |
| 54 | * Test RescueParty. |
| 55 | */ |
| 56 | public class RescuePartyTest { |
| 57 | private static final int PERSISTENT_APP_UID = 12; |
| 58 | private static final long CURRENT_NETWORK_TIME_MILLIS = 0L; |
| 59 | |
| 60 | private MockitoSession mSession; |
| 61 | |
| 62 | @Mock(answer = Answers.RETURNS_DEEP_STUBS) |
| 63 | private Context mMockContext; |
| 64 | |
| 65 | @Mock(answer = Answers.RETURNS_DEEP_STUBS) |
| 66 | private ContentResolver mMockContentResolver; |
| 67 | |
| 68 | private HashMap<String, String> mSystemSettingsMap; |
| 69 | |
| 70 | @Before |
| 71 | public void setUp() throws Exception { |
| 72 | mSession = |
| 73 | ExtendedMockito.mockitoSession().initMocks( |
| 74 | this) |
| 75 | .strictness(Strictness.LENIENT) |
| 76 | .spyStatic(SystemProperties.class) |
| 77 | .spyStatic(Settings.Global.class) |
| 78 | .spyStatic(Settings.Secure.class) |
| 79 | .spyStatic(RecoverySystem.class) |
| 80 | .spyStatic(RescueParty.class) |
| 81 | .startMocking(); |
| 82 | mSystemSettingsMap = new HashMap<>(); |
| 83 | |
| 84 | when(mMockContext.getContentResolver()).thenReturn(mMockContentResolver); |
| 85 | |
| 86 | |
| 87 | // Mock SystemProperties setter and various getters |
| 88 | doAnswer((Answer<Void>) invocationOnMock -> { |
| 89 | String key = invocationOnMock.getArgument(0); |
| 90 | String value = invocationOnMock.getArgument(1); |
| 91 | |
| 92 | mSystemSettingsMap.put(key, value); |
| 93 | return null; |
| 94 | } |
| 95 | ).when(() -> SystemProperties.set(anyString(), anyString())); |
| 96 | |
| 97 | doAnswer((Answer<Boolean>) invocationOnMock -> { |
| 98 | String key = invocationOnMock.getArgument(0); |
| 99 | boolean defaultValue = invocationOnMock.getArgument(1); |
| 100 | |
| 101 | String storedValue = mSystemSettingsMap.get(key); |
| 102 | return storedValue == null ? defaultValue : Boolean.parseBoolean(storedValue); |
| 103 | } |
| 104 | ).when(() -> SystemProperties.getBoolean(anyString(), anyBoolean())); |
| 105 | |
| 106 | doAnswer((Answer<Integer>) invocationOnMock -> { |
| 107 | String key = invocationOnMock.getArgument(0); |
| 108 | int defaultValue = invocationOnMock.getArgument(1); |
| 109 | |
| 110 | String storedValue = mSystemSettingsMap.get(key); |
| 111 | return storedValue == null ? defaultValue : Integer.parseInt(storedValue); |
| 112 | } |
| 113 | ).when(() -> SystemProperties.getInt(anyString(), anyInt())); |
| 114 | |
| 115 | doAnswer((Answer<Long>) invocationOnMock -> { |
| 116 | String key = invocationOnMock.getArgument(0); |
| 117 | long defaultValue = invocationOnMock.getArgument(1); |
| 118 | |
| 119 | String storedValue = mSystemSettingsMap.get(key); |
| 120 | return storedValue == null ? defaultValue : Long.parseLong(storedValue); |
| 121 | } |
| 122 | ).when(() -> SystemProperties.getLong(anyString(), anyLong())); |
| 123 | |
| 124 | doReturn(CURRENT_NETWORK_TIME_MILLIS).when(() -> RescueParty.getElapsedRealtime()); |
| 125 | RescueParty.resetAllThresholds(); |
| 126 | |
| 127 | SystemProperties.set(RescueParty.PROP_RESCUE_LEVEL, |
| 128 | Integer.toString(RescueParty.LEVEL_NONE)); |
| 129 | SystemProperties.set(RescueParty.PROP_RESCUE_BOOT_COUNT, Integer.toString(0)); |
| 130 | SystemProperties.set(RescueParty.PROP_ENABLE_RESCUE, Boolean.toString(true)); |
| 131 | } |
| 132 | |
| 133 | @After |
| 134 | public void tearDown() throws Exception { |
| 135 | mSession.finishMocking(); |
| 136 | } |
| 137 | |
| 138 | @Test |
| 139 | public void testBootLoopDetectionWithExecutionForAllRescueLevels() { |
| 140 | noteBoot(RescueParty.TRIGGER_COUNT); |
| 141 | |
| 142 | verifySettingsResets(Settings.RESET_MODE_UNTRUSTED_DEFAULTS); |
| 143 | assertEquals(RescueParty.LEVEL_RESET_SETTINGS_UNTRUSTED_DEFAULTS, |
| 144 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 145 | |
| 146 | noteBoot(RescueParty.TRIGGER_COUNT); |
| 147 | |
| 148 | verifySettingsResets(Settings.RESET_MODE_UNTRUSTED_CHANGES); |
| 149 | assertEquals(RescueParty.LEVEL_RESET_SETTINGS_UNTRUSTED_CHANGES, |
| 150 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 151 | |
| 152 | noteBoot(RescueParty.TRIGGER_COUNT); |
| 153 | |
| 154 | verifySettingsResets(Settings.RESET_MODE_TRUSTED_DEFAULTS); |
| 155 | assertEquals(RescueParty.LEVEL_RESET_SETTINGS_TRUSTED_DEFAULTS, |
| 156 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 157 | |
| 158 | noteBoot(RescueParty.TRIGGER_COUNT); |
| 159 | |
| 160 | verify(() -> RecoverySystem.rebootPromptAndWipeUserData(mMockContext, RescueParty.TAG)); |
| 161 | assertEquals(RescueParty.LEVEL_FACTORY_RESET, |
| 162 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 163 | } |
| 164 | |
| 165 | @Test |
| 166 | public void testPersistentAppCrashDetectionWithExecutionForAllRescueLevels() { |
| 167 | notePersistentAppCrash(RescueParty.TRIGGER_COUNT); |
| 168 | |
| 169 | verifySettingsResets(Settings.RESET_MODE_UNTRUSTED_DEFAULTS); |
| 170 | assertEquals(RescueParty.LEVEL_RESET_SETTINGS_UNTRUSTED_DEFAULTS, |
| 171 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 172 | |
| 173 | notePersistentAppCrash(RescueParty.TRIGGER_COUNT); |
| 174 | |
| 175 | verifySettingsResets(Settings.RESET_MODE_UNTRUSTED_CHANGES); |
| 176 | assertEquals(RescueParty.LEVEL_RESET_SETTINGS_UNTRUSTED_CHANGES, |
| 177 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 178 | |
| 179 | notePersistentAppCrash(RescueParty.TRIGGER_COUNT); |
| 180 | |
| 181 | verifySettingsResets(Settings.RESET_MODE_TRUSTED_DEFAULTS); |
| 182 | assertEquals(RescueParty.LEVEL_RESET_SETTINGS_TRUSTED_DEFAULTS, |
| 183 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 184 | |
| 185 | notePersistentAppCrash(RescueParty.TRIGGER_COUNT); |
| 186 | |
| 187 | verify(() -> RecoverySystem.rebootPromptAndWipeUserData(mMockContext, RescueParty.TAG)); |
| 188 | assertEquals(RescueParty.LEVEL_FACTORY_RESET, |
| 189 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 190 | } |
| 191 | |
| 192 | @Test |
| 193 | public void testBootLoopDetectionWithWrongInterval() { |
| 194 | noteBoot(RescueParty.TRIGGER_COUNT - 1); |
| 195 | |
| 196 | // last boot is just outside of the boot loop detection window |
| 197 | doReturn(CURRENT_NETWORK_TIME_MILLIS + RescueParty.BOOT_TRIGGER_WINDOW_MILLIS + 1).when( |
| 198 | () -> RescueParty.getElapsedRealtime()); |
| 199 | noteBoot(/*numTimes=*/1); |
| 200 | |
| 201 | assertEquals(RescueParty.LEVEL_NONE, |
| 202 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 203 | } |
| 204 | |
| 205 | @Test |
| 206 | public void testPersistentAppCrashDetectionWithWrongInterval() { |
| 207 | notePersistentAppCrash(RescueParty.TRIGGER_COUNT - 1); |
| 208 | |
| 209 | // last persistent app crash is just outside of the boot loop detection window |
| 210 | doReturn(CURRENT_NETWORK_TIME_MILLIS |
| 211 | + RescueParty.PERSISTENT_APP_CRASH_TRIGGER_WINDOW_MILLIS + 1) |
| 212 | .when(() -> RescueParty.getElapsedRealtime()); |
| 213 | notePersistentAppCrash(/*numTimes=*/1); |
| 214 | |
| 215 | assertEquals(RescueParty.LEVEL_NONE, |
| 216 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 217 | } |
| 218 | |
| 219 | @Test |
| 220 | public void testBootLoopDetectionWithProperInterval() { |
| 221 | noteBoot(RescueParty.TRIGGER_COUNT - 1); |
| 222 | |
| 223 | // last boot is just inside of the boot loop detection window |
| 224 | doReturn(CURRENT_NETWORK_TIME_MILLIS + RescueParty.BOOT_TRIGGER_WINDOW_MILLIS).when( |
| 225 | () -> RescueParty.getElapsedRealtime()); |
| 226 | noteBoot(/*numTimes=*/1); |
| 227 | |
| 228 | verifySettingsResets(Settings.RESET_MODE_UNTRUSTED_DEFAULTS); |
| 229 | assertEquals(RescueParty.LEVEL_RESET_SETTINGS_UNTRUSTED_DEFAULTS, |
| 230 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 231 | } |
| 232 | |
| 233 | @Test |
| 234 | public void testPersistentAppCrashDetectionWithProperInterval() { |
| 235 | notePersistentAppCrash(RescueParty.TRIGGER_COUNT - 1); |
| 236 | |
| 237 | // last persistent app crash is just inside of the boot loop detection window |
| 238 | doReturn(CURRENT_NETWORK_TIME_MILLIS |
| 239 | + RescueParty.PERSISTENT_APP_CRASH_TRIGGER_WINDOW_MILLIS) |
| 240 | .when(() -> RescueParty.getElapsedRealtime()); |
| 241 | notePersistentAppCrash(/*numTimes=*/1); |
| 242 | |
| 243 | verifySettingsResets(Settings.RESET_MODE_UNTRUSTED_DEFAULTS); |
| 244 | assertEquals(RescueParty.LEVEL_RESET_SETTINGS_UNTRUSTED_DEFAULTS, |
| 245 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 246 | } |
| 247 | |
| 248 | @Test |
| 249 | public void testBootLoopDetectionWithWrongTriggerCount() { |
| 250 | noteBoot(RescueParty.TRIGGER_COUNT - 1); |
| 251 | assertEquals(RescueParty.LEVEL_NONE, |
| 252 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 253 | } |
| 254 | |
| 255 | @Test |
| 256 | public void testPersistentAppCrashDetectionWithWrongTriggerCount() { |
| 257 | notePersistentAppCrash(RescueParty.TRIGGER_COUNT - 1); |
| 258 | assertEquals(RescueParty.LEVEL_NONE, |
| 259 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 260 | } |
| 261 | |
| 262 | @Test |
| 263 | public void testIsAttemptingFactoryReset() { |
| 264 | noteBoot(RescueParty.TRIGGER_COUNT * 4); |
| 265 | |
| 266 | verify(() -> RecoverySystem.rebootPromptAndWipeUserData(mMockContext, RescueParty.TAG)); |
| 267 | assertTrue(RescueParty.isAttemptingFactoryReset()); |
| 268 | } |
| 269 | |
| 270 | @Test |
| 271 | public void testOnSettingsProviderPublishedExecutesRescueLevels() { |
| 272 | SystemProperties.set(RescueParty.PROP_RESCUE_LEVEL, Integer.toString(1)); |
| 273 | |
| 274 | RescueParty.onSettingsProviderPublished(mMockContext); |
| 275 | |
| 276 | verifySettingsResets(Settings.RESET_MODE_UNTRUSTED_DEFAULTS); |
| 277 | assertEquals(RescueParty.LEVEL_RESET_SETTINGS_UNTRUSTED_DEFAULTS, |
| 278 | SystemProperties.getInt(RescueParty.PROP_RESCUE_LEVEL, RescueParty.LEVEL_NONE)); |
| 279 | } |
| 280 | |
| 281 | private void verifySettingsResets(int resetMode) { |
| 282 | verify(() -> Settings.Global.resetToDefaultsAsUser(mMockContentResolver, null, |
| 283 | resetMode, |
| 284 | UserHandle.USER_SYSTEM)); |
| 285 | verify(() -> Settings.Secure.resetToDefaultsAsUser(eq(mMockContentResolver), isNull(), |
| 286 | eq(resetMode), anyInt())); |
| 287 | } |
| 288 | |
| 289 | private void noteBoot(int numTimes) { |
| 290 | for (int i = 0; i < numTimes; i++) { |
| 291 | RescueParty.noteBoot(mMockContext); |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | private void notePersistentAppCrash(int numTimes) { |
| 296 | for (int i = 0; i < numTimes; i++) { |
| 297 | RescueParty.notePersistentAppCrash(mMockContext, PERSISTENT_APP_UID); |
| 298 | } |
| 299 | } |
| 300 | } |