1 /* 2 * Copyright (C) 2022 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.adservices; 18 19 import android.annotation.NonNull; 20 import android.util.ArrayMap; 21 22 import com.android.internal.annotations.GuardedBy; 23 import com.android.internal.annotations.VisibleForTesting; 24 import com.android.server.adservices.consent.AppConsentManager; 25 import com.android.server.adservices.consent.ConsentManager; 26 import com.android.server.adservices.data.topics.TopicsDao; 27 import com.android.server.adservices.rollback.RollbackHandlingManager; 28 29 import java.io.File; 30 import java.io.IOException; 31 import java.io.PrintWriter; 32 import java.nio.file.Files; 33 import java.nio.file.Path; 34 import java.nio.file.Paths; 35 import java.util.Map; 36 37 /** 38 * Manager to handle User Instance. This is to ensure that each user profile is isolated. 39 * 40 * @hide 41 */ 42 public class UserInstanceManager { 43 44 private final Object mLock = new Object(); 45 46 // We have 1 ConsentManager per user/user profile. This is to isolate user's data. 47 @GuardedBy("mLock") 48 private final Map<Integer, ConsentManager> mConsentManagerMapLocked = new ArrayMap<>(); 49 50 @GuardedBy("mLock") 51 private final Map<Integer, AppConsentManager> mAppConsentManagerMapLocked = new ArrayMap<>(); 52 53 54 @GuardedBy("UserInstanceManager.class") 55 private final Map<Integer, BlockedTopicsManager> mBlockedTopicsManagerMapLocked = 56 new ArrayMap<>(); 57 58 // We have 1 RollbackManager per user/user profile, to isolate each user's data. 59 @GuardedBy("mLock") 60 private final Map<Integer, RollbackHandlingManager> mRollbackHandlingManagerMapLocked = 61 new ArrayMap<>(); 62 63 private final String mAdServicesBaseDir; 64 65 private final TopicsDao mTopicsDao; 66 UserInstanceManager(@onNull TopicsDao topicsDao, @NonNull String adServicesBaseDir)67 UserInstanceManager(@NonNull TopicsDao topicsDao, @NonNull String adServicesBaseDir) { 68 mTopicsDao = topicsDao; 69 mAdServicesBaseDir = adServicesBaseDir; 70 } 71 72 @NonNull getOrCreateUserConsentManagerInstance(int userIdentifier)73 ConsentManager getOrCreateUserConsentManagerInstance(int userIdentifier) throws IOException { 74 synchronized (mLock) { 75 ConsentManager instance = getUserConsentManagerInstance(userIdentifier); 76 if (instance == null) { 77 instance = ConsentManager.createConsentManager(mAdServicesBaseDir, userIdentifier); 78 mConsentManagerMapLocked.put(userIdentifier, instance); 79 } 80 return instance; 81 } 82 } 83 84 @NonNull getOrCreateUserAppConsentManagerInstance(int userIdentifier)85 AppConsentManager getOrCreateUserAppConsentManagerInstance(int userIdentifier) 86 throws IOException { 87 synchronized (mLock) { 88 AppConsentManager instance = mAppConsentManagerMapLocked.get(userIdentifier); 89 if (instance == null) { 90 instance = 91 AppConsentManager.createAppConsentManager( 92 mAdServicesBaseDir, userIdentifier); 93 mAppConsentManagerMapLocked.put(userIdentifier, instance); 94 } 95 return instance; 96 } 97 } 98 99 @NonNull getOrCreateUserBlockedTopicsManagerInstance(int userIdentifier)100 BlockedTopicsManager getOrCreateUserBlockedTopicsManagerInstance(int userIdentifier) { 101 synchronized (UserInstanceManager.class) { 102 BlockedTopicsManager instance = mBlockedTopicsManagerMapLocked.get(userIdentifier); 103 if (instance == null) { 104 instance = new BlockedTopicsManager(mTopicsDao, userIdentifier); 105 mBlockedTopicsManagerMapLocked.put(userIdentifier, instance); 106 } 107 return instance; 108 } 109 } 110 111 @NonNull getOrCreateUserRollbackHandlingManagerInstance( int userIdentifier, int packageVersion)112 RollbackHandlingManager getOrCreateUserRollbackHandlingManagerInstance( 113 int userIdentifier, int packageVersion) throws IOException { 114 synchronized (mLock) { 115 RollbackHandlingManager instance = 116 mRollbackHandlingManagerMapLocked.get(userIdentifier); 117 if (instance == null) { 118 instance = 119 RollbackHandlingManager.createRollbackHandlingManager( 120 mAdServicesBaseDir, userIdentifier, packageVersion); 121 mRollbackHandlingManagerMapLocked.put(userIdentifier, instance); 122 } 123 return instance; 124 } 125 } 126 127 @VisibleForTesting getUserConsentManagerInstance(int userIdentifier)128 ConsentManager getUserConsentManagerInstance(int userIdentifier) { 129 synchronized (mLock) { 130 return mConsentManagerMapLocked.get(userIdentifier); 131 } 132 } 133 134 /** 135 * Deletes the user instance and remove the user consent related data. This will delete the 136 * directory: /data/system/adservices/user_id 137 */ deleteUserInstance(int userIdentifier)138 void deleteUserInstance(int userIdentifier) throws Exception { 139 synchronized (mLock) { 140 ConsentManager instance = mConsentManagerMapLocked.get(userIdentifier); 141 if (instance != null) { 142 String userDirectoryPath = mAdServicesBaseDir + "/" + userIdentifier; 143 final Path packageDir = Paths.get(userDirectoryPath); 144 if (Files.exists(packageDir)) { 145 if (!instance.deleteUserDirectory(new File(userDirectoryPath))) { 146 LogUtil.e("Failed to delete " + userDirectoryPath); 147 } 148 } 149 mConsentManagerMapLocked.remove(userIdentifier); 150 } 151 152 // Delete all data in the database that belongs to this user 153 mTopicsDao.clearAllBlockedTopicsOfUser(userIdentifier); 154 } 155 } 156 dump(PrintWriter writer, String[] args)157 void dump(PrintWriter writer, String[] args) { 158 writer.println("UserInstanceManager"); 159 String prefix = " "; 160 writer.printf("%smAdServicesBaseDir: %s\n", prefix, mAdServicesBaseDir); 161 synchronized (mLock) { 162 writer.printf("%smConsentManagerMapLocked: %s\n", prefix, mConsentManagerMapLocked); 163 writer.printf( 164 "%smAppConsentManagerMapLocked: %s\n", prefix, mAppConsentManagerMapLocked); 165 writer.printf( 166 "%smRollbackHandlingManagerMapLocked: %s\n", 167 prefix, mRollbackHandlingManagerMapLocked); 168 } 169 synchronized (UserInstanceManager.class) { 170 writer.printf( 171 "%smBlockedTopicsManagerMapLocked=%s\n", 172 prefix, mBlockedTopicsManagerMapLocked); 173 } 174 175 mTopicsDao.dump(writer, prefix, args); 176 } 177 178 @VisibleForTesting tearDownForTesting()179 void tearDownForTesting() { 180 synchronized (mLock) { 181 for (ConsentManager consentManager : mConsentManagerMapLocked.values()) { 182 consentManager.tearDownForTesting(); 183 } 184 for (AppConsentManager appConsentManager : mAppConsentManagerMapLocked.values()) { 185 appConsentManager.tearDownForTesting(); 186 } 187 for (RollbackHandlingManager rollbackHandlingManager : 188 mRollbackHandlingManagerMapLocked.values()) { 189 rollbackHandlingManager.tearDownForTesting(); 190 } 191 } 192 } 193 } 194