| /* |
| * Copyright (C) 2007 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.providers.settings; |
| |
| import android.Manifest; |
| import android.app.ActivityManager; |
| import android.app.AppGlobals; |
| import android.app.backup.BackupManager; |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.ContentProvider; |
| import android.content.ContentValues; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.IPackageManager; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.content.pm.UserInfo; |
| import android.database.Cursor; |
| import android.database.MatrixCursor; |
| import android.database.sqlite.SQLiteDatabase; |
| import android.database.sqlite.SQLiteQueryBuilder; |
| import android.hardware.camera2.utils.ArrayUtils; |
| import android.media.AudioManager; |
| import android.net.Uri; |
| import android.os.Binder; |
| import android.os.Build; |
| import android.os.Bundle; |
| import android.os.Debug; |
| import android.os.DropBoxManager; |
| import android.os.Environment; |
| import android.os.Handler; |
| import android.os.HandlerThread; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.ParcelFileDescriptor; |
| import android.os.Process; |
| import android.os.RemoteException; |
| import android.os.SELinux; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.os.UserManagerInternal; |
| import android.provider.Settings; |
| import android.text.TextUtils; |
| import android.util.ArraySet; |
| import android.util.Slog; |
| import android.util.SparseArray; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.content.PackageMonitor; |
| import com.android.internal.os.BackgroundThread; |
| import com.android.providers.settings.SettingsState.Setting; |
| import com.android.server.LocalServices; |
| import com.android.server.SystemConfig; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.FileNotFoundException; |
| import java.io.PrintWriter; |
| import java.security.SecureRandom; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.regex.Pattern; |
| |
| /** |
| * <p> |
| * This class is a content provider that publishes the system settings. |
| * It can be accessed via the content provider APIs or via custom call |
| * commands. The latter is a bit faster and is the preferred way to access |
| * the platform settings. |
| * </p> |
| * <p> |
| * There are three settings types, global (with signature level protection |
| * and shared across users), secure (with signature permission level |
| * protection and per user), and system (with dangerous permission level |
| * protection and per user). Global settings are stored under the device owner. |
| * Each of these settings is represented by a {@link |
| * com.android.providers.settings.SettingsState} object mapped to an integer |
| * key derived from the setting type in the most significant bits and user |
| * id in the least significant bits. Settings are synchronously loaded on |
| * instantiation of a SettingsState and asynchronously persisted on mutation. |
| * Settings are stored in the user specific system directory. |
| * </p> |
| * <p> |
| * Apps targeting APIs Lollipop MR1 and lower can add custom settings entries |
| * and get a warning. Targeting higher API version prohibits this as the |
| * system settings are not a place for apps to save their state. When a package |
| * is removed the settings it added are deleted. Apps cannot delete system |
| * settings added by the platform. System settings values are validated to |
| * ensure the clients do not put bad values. Global and secure settings are |
| * changed only by trusted parties, therefore no validation is performed. Also |
| * there is a limit on the amount of app specific settings that can be added |
| * to prevent unlimited growth of the system process memory footprint. |
| * </p> |
| */ |
| @SuppressWarnings("deprecation") |
| public class SettingsProvider extends ContentProvider { |
| private static final boolean DEBUG = false; |
| |
| private static final boolean DROP_DATABASE_ON_MIGRATION = !Build.IS_DEBUGGABLE; |
| |
| private static final String LOG_TAG = "SettingsProvider"; |
| |
| private static final String TABLE_SYSTEM = "system"; |
| private static final String TABLE_SECURE = "secure"; |
| private static final String TABLE_GLOBAL = "global"; |
| |
| // Old tables no longer exist. |
| private static final String TABLE_FAVORITES = "favorites"; |
| private static final String TABLE_OLD_FAVORITES = "old_favorites"; |
| private static final String TABLE_BLUETOOTH_DEVICES = "bluetooth_devices"; |
| private static final String TABLE_BOOKMARKS = "bookmarks"; |
| private static final String TABLE_ANDROID_METADATA = "android_metadata"; |
| |
| // The set of removed legacy tables. |
| private static final Set<String> REMOVED_LEGACY_TABLES = new ArraySet<>(); |
| static { |
| REMOVED_LEGACY_TABLES.add(TABLE_FAVORITES); |
| REMOVED_LEGACY_TABLES.add(TABLE_OLD_FAVORITES); |
| REMOVED_LEGACY_TABLES.add(TABLE_BLUETOOTH_DEVICES); |
| REMOVED_LEGACY_TABLES.add(TABLE_BOOKMARKS); |
| REMOVED_LEGACY_TABLES.add(TABLE_ANDROID_METADATA); |
| } |
| |
| private static final int MUTATION_OPERATION_INSERT = 1; |
| private static final int MUTATION_OPERATION_DELETE = 2; |
| private static final int MUTATION_OPERATION_UPDATE = 3; |
| |
| private static final String[] ALL_COLUMNS = new String[] { |
| Settings.NameValueTable._ID, |
| Settings.NameValueTable.NAME, |
| Settings.NameValueTable.VALUE |
| }; |
| |
| public static final int SETTINGS_TYPE_GLOBAL = 0; |
| public static final int SETTINGS_TYPE_SYSTEM = 1; |
| public static final int SETTINGS_TYPE_SECURE = 2; |
| |
| public static final int SETTINGS_TYPE_MASK = 0xF0000000; |
| public static final int SETTINGS_TYPE_SHIFT = 28; |
| |
| private static final Bundle NULL_SETTING_BUNDLE = Bundle.forPair( |
| Settings.NameValueTable.VALUE, null); |
| |
| // Per user secure settings that moved to the for all users global settings. |
| static final Set<String> sSecureMovedToGlobalSettings = new ArraySet<>(); |
| static { |
| Settings.Secure.getMovedToGlobalSettings(sSecureMovedToGlobalSettings); |
| } |
| |
| // Per user system settings that moved to the for all users global settings. |
| static final Set<String> sSystemMovedToGlobalSettings = new ArraySet<>(); |
| static { |
| Settings.System.getMovedToGlobalSettings(sSystemMovedToGlobalSettings); |
| } |
| |
| // Per user system settings that moved to the per user secure settings. |
| static final Set<String> sSystemMovedToSecureSettings = new ArraySet<>(); |
| static { |
| Settings.System.getMovedToSecureSettings(sSystemMovedToSecureSettings); |
| } |
| |
| // Per all users global settings that moved to the per user secure settings. |
| static final Set<String> sGlobalMovedToSecureSettings = new ArraySet<>(); |
| static { |
| Settings.Global.getMovedToSecureSettings(sGlobalMovedToSecureSettings); |
| } |
| |
| // Per user secure settings that are cloned for the managed profiles of the user. |
| private static final Set<String> sSecureCloneToManagedSettings = new ArraySet<>(); |
| static { |
| Settings.Secure.getCloneToManagedProfileSettings(sSecureCloneToManagedSettings); |
| } |
| |
| // Per user system settings that are cloned for the managed profiles of the user. |
| private static final Set<String> sSystemCloneToManagedSettings = new ArraySet<>(); |
| static { |
| Settings.System.getCloneToManagedProfileSettings(sSystemCloneToManagedSettings); |
| } |
| |
| private final Object mLock = new Object(); |
| |
| @GuardedBy("mLock") |
| private SettingsRegistry mSettingsRegistry; |
| |
| @GuardedBy("mLock") |
| private HandlerThread mHandlerThread; |
| |
| // We have to call in the user manager with no lock held, |
| private volatile UserManager mUserManager; |
| |
| // We have to call in the package manager with no lock held, |
| private volatile IPackageManager mPackageManager; |
| |
| public static int makeKey(int type, int userId) { |
| return (type << SETTINGS_TYPE_SHIFT) | userId; |
| } |
| |
| public static int getTypeFromKey(int key) { |
| return key >>> SETTINGS_TYPE_SHIFT; |
| } |
| |
| public static int getUserIdFromKey(int key) { |
| return key & ~SETTINGS_TYPE_MASK; |
| } |
| |
| public static String settingTypeToString(int type) { |
| switch (type) { |
| case SETTINGS_TYPE_GLOBAL: { |
| return "SETTINGS_GLOBAL"; |
| } |
| case SETTINGS_TYPE_SECURE: { |
| return "SETTINGS_SECURE"; |
| } |
| case SETTINGS_TYPE_SYSTEM: { |
| return "SETTINGS_SYSTEM"; |
| } |
| default: { |
| return "UNKNOWN"; |
| } |
| } |
| } |
| |
| public static String keyToString(int key) { |
| return "Key[user=" + getUserIdFromKey(key) + ";type=" |
| + settingTypeToString(getTypeFromKey(key)) + "]"; |
| } |
| |
| @Override |
| public boolean onCreate() { |
| synchronized (mLock) { |
| mUserManager = UserManager.get(getContext()); |
| mPackageManager = AppGlobals.getPackageManager(); |
| mHandlerThread = new HandlerThread(LOG_TAG, |
| Process.THREAD_PRIORITY_BACKGROUND); |
| mHandlerThread.start(); |
| mSettingsRegistry = new SettingsRegistry(); |
| } |
| registerBroadcastReceivers(); |
| startWatchingUserRestrictionChanges(); |
| return true; |
| } |
| |
| @Override |
| public Bundle call(String method, String name, Bundle args) { |
| final int requestingUserId = getRequestingUserId(args); |
| switch (method) { |
| case Settings.CALL_METHOD_GET_GLOBAL: { |
| Setting setting = getGlobalSetting(name); |
| return packageValueForCallResult(setting, isTrackingGeneration(args)); |
| } |
| |
| case Settings.CALL_METHOD_GET_SECURE: { |
| Setting setting = getSecureSetting(name, requestingUserId); |
| return packageValueForCallResult(setting, isTrackingGeneration(args)); |
| } |
| |
| case Settings.CALL_METHOD_GET_SYSTEM: { |
| Setting setting = getSystemSetting(name, requestingUserId); |
| return packageValueForCallResult(setting, isTrackingGeneration(args)); |
| } |
| |
| case Settings.CALL_METHOD_PUT_GLOBAL: { |
| String value = getSettingValue(args); |
| insertGlobalSetting(name, value, requestingUserId, false); |
| break; |
| } |
| |
| case Settings.CALL_METHOD_PUT_SECURE: { |
| String value = getSettingValue(args); |
| insertSecureSetting(name, value, requestingUserId, false); |
| break; |
| } |
| |
| case Settings.CALL_METHOD_PUT_SYSTEM: { |
| String value = getSettingValue(args); |
| insertSystemSetting(name, value, requestingUserId); |
| break; |
| } |
| |
| default: { |
| Slog.w(LOG_TAG, "call() with invalid method: " + method); |
| } break; |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public String getType(Uri uri) { |
| Arguments args = new Arguments(uri, null, null, true); |
| if (TextUtils.isEmpty(args.name)) { |
| return "vnd.android.cursor.dir/" + args.table; |
| } else { |
| return "vnd.android.cursor.item/" + args.table; |
| } |
| } |
| |
| @Override |
| public Cursor query(Uri uri, String[] projection, String where, String[] whereArgs, |
| String order) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "query() for user: " + UserHandle.getCallingUserId()); |
| } |
| |
| Arguments args = new Arguments(uri, where, whereArgs, true); |
| String[] normalizedProjection = normalizeProjection(projection); |
| |
| // If a legacy table that is gone, done. |
| if (REMOVED_LEGACY_TABLES.contains(args.table)) { |
| return new MatrixCursor(normalizedProjection, 0); |
| } |
| |
| switch (args.table) { |
| case TABLE_GLOBAL: { |
| if (args.name != null) { |
| Setting setting = getGlobalSetting(args.name); |
| return packageSettingForQuery(setting, normalizedProjection); |
| } else { |
| return getAllGlobalSettings(projection); |
| } |
| } |
| |
| case TABLE_SECURE: { |
| final int userId = UserHandle.getCallingUserId(); |
| if (args.name != null) { |
| Setting setting = getSecureSetting(args.name, userId); |
| return packageSettingForQuery(setting, normalizedProjection); |
| } else { |
| return getAllSecureSettings(userId, projection); |
| } |
| } |
| |
| case TABLE_SYSTEM: { |
| final int userId = UserHandle.getCallingUserId(); |
| if (args.name != null) { |
| Setting setting = getSystemSetting(args.name, userId); |
| return packageSettingForQuery(setting, normalizedProjection); |
| } else { |
| return getAllSystemSettings(userId, projection); |
| } |
| } |
| |
| default: { |
| throw new IllegalArgumentException("Invalid Uri path:" + uri); |
| } |
| } |
| } |
| |
| @Override |
| public Uri insert(Uri uri, ContentValues values) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "insert() for user: " + UserHandle.getCallingUserId()); |
| } |
| |
| String table = getValidTableOrThrow(uri); |
| |
| // If a legacy table that is gone, done. |
| if (REMOVED_LEGACY_TABLES.contains(table)) { |
| return null; |
| } |
| |
| String name = values.getAsString(Settings.Secure.NAME); |
| if (!isKeyValid(name)) { |
| return null; |
| } |
| |
| String value = values.getAsString(Settings.Secure.VALUE); |
| |
| switch (table) { |
| case TABLE_GLOBAL: { |
| if (insertGlobalSetting(name, value, UserHandle.getCallingUserId(), false)) { |
| return Uri.withAppendedPath(Settings.Global.CONTENT_URI, name); |
| } |
| } break; |
| |
| case TABLE_SECURE: { |
| if (insertSecureSetting(name, value, UserHandle.getCallingUserId(), false)) { |
| return Uri.withAppendedPath(Settings.Secure.CONTENT_URI, name); |
| } |
| } break; |
| |
| case TABLE_SYSTEM: { |
| if (insertSystemSetting(name, value, UserHandle.getCallingUserId())) { |
| return Uri.withAppendedPath(Settings.System.CONTENT_URI, name); |
| } |
| } break; |
| |
| default: { |
| throw new IllegalArgumentException("Bad Uri path:" + uri); |
| } |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public int bulkInsert(Uri uri, ContentValues[] allValues) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "bulkInsert() for user: " + UserHandle.getCallingUserId()); |
| } |
| |
| int insertionCount = 0; |
| final int valuesCount = allValues.length; |
| for (int i = 0; i < valuesCount; i++) { |
| ContentValues values = allValues[i]; |
| if (insert(uri, values) != null) { |
| insertionCount++; |
| } |
| } |
| |
| return insertionCount; |
| } |
| |
| @Override |
| public int delete(Uri uri, String where, String[] whereArgs) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "delete() for user: " + UserHandle.getCallingUserId()); |
| } |
| |
| Arguments args = new Arguments(uri, where, whereArgs, false); |
| |
| // If a legacy table that is gone, done. |
| if (REMOVED_LEGACY_TABLES.contains(args.table)) { |
| return 0; |
| } |
| |
| if (!isKeyValid(args.name)) { |
| return 0; |
| } |
| |
| switch (args.table) { |
| case TABLE_GLOBAL: { |
| final int userId = UserHandle.getCallingUserId(); |
| return deleteGlobalSetting(args.name, userId, false) ? 1 : 0; |
| } |
| |
| case TABLE_SECURE: { |
| final int userId = UserHandle.getCallingUserId(); |
| return deleteSecureSetting(args.name, userId, false) ? 1 : 0; |
| } |
| |
| case TABLE_SYSTEM: { |
| final int userId = UserHandle.getCallingUserId(); |
| return deleteSystemSetting(args.name, userId) ? 1 : 0; |
| } |
| |
| default: { |
| throw new IllegalArgumentException("Bad Uri path:" + uri); |
| } |
| } |
| } |
| |
| @Override |
| public int update(Uri uri, ContentValues values, String where, String[] whereArgs) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "update() for user: " + UserHandle.getCallingUserId()); |
| } |
| |
| Arguments args = new Arguments(uri, where, whereArgs, false); |
| |
| // If a legacy table that is gone, done. |
| if (REMOVED_LEGACY_TABLES.contains(args.table)) { |
| return 0; |
| } |
| |
| String name = values.getAsString(Settings.Secure.NAME); |
| if (!isKeyValid(name)) { |
| return 0; |
| } |
| String value = values.getAsString(Settings.Secure.VALUE); |
| |
| switch (args.table) { |
| case TABLE_GLOBAL: { |
| final int userId = UserHandle.getCallingUserId(); |
| return updateGlobalSetting(args.name, value, userId, false) ? 1 : 0; |
| } |
| |
| case TABLE_SECURE: { |
| final int userId = UserHandle.getCallingUserId(); |
| return updateSecureSetting(args.name, value, userId, false) ? 1 : 0; |
| } |
| |
| case TABLE_SYSTEM: { |
| final int userId = UserHandle.getCallingUserId(); |
| return updateSystemSetting(args.name, value, userId) ? 1 : 0; |
| } |
| |
| default: { |
| throw new IllegalArgumentException("Invalid Uri path:" + uri); |
| } |
| } |
| } |
| |
| @Override |
| public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException { |
| final String cacheName; |
| if (Settings.System.RINGTONE_CACHE_URI.equals(uri)) { |
| cacheName = Settings.System.RINGTONE_CACHE; |
| } else if (Settings.System.NOTIFICATION_SOUND_CACHE_URI.equals(uri)) { |
| cacheName = Settings.System.NOTIFICATION_SOUND_CACHE; |
| } else if (Settings.System.ALARM_ALERT_CACHE_URI.equals(uri)) { |
| cacheName = Settings.System.ALARM_ALERT_CACHE; |
| } else { |
| throw new FileNotFoundException("Direct file access no longer supported; " |
| + "ringtone playback is available through android.media.Ringtone"); |
| } |
| |
| final File cacheFile = new File( |
| getRingtoneCacheDir(UserHandle.getCallingUserId()), cacheName); |
| return ParcelFileDescriptor.open(cacheFile, ParcelFileDescriptor.parseMode(mode)); |
| } |
| |
| private File getRingtoneCacheDir(int userId) { |
| final File cacheDir = new File(Environment.getDataSystemDeDirectory(userId), "ringtones"); |
| cacheDir.mkdir(); |
| SELinux.restorecon(cacheDir); |
| return cacheDir; |
| } |
| |
| @Override |
| public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| synchronized (mLock) { |
| final long identity = Binder.clearCallingIdentity(); |
| try { |
| List<UserInfo> users = mUserManager.getUsers(true); |
| final int userCount = users.size(); |
| for (int i = 0; i < userCount; i++) { |
| UserInfo user = users.get(i); |
| dumpForUserLocked(user.id, pw); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| } |
| |
| private void dumpForUserLocked(int userId, PrintWriter pw) { |
| if (userId == UserHandle.USER_SYSTEM) { |
| pw.println("GLOBAL SETTINGS (user " + userId + ")"); |
| Cursor globalCursor = getAllGlobalSettings(ALL_COLUMNS); |
| dumpSettings(globalCursor, pw); |
| pw.println(); |
| |
| SettingsState globalSettings = mSettingsRegistry.getSettingsLocked( |
| SETTINGS_TYPE_GLOBAL, UserHandle.USER_SYSTEM); |
| globalSettings.dumpHistoricalOperations(pw); |
| } |
| |
| pw.println("SECURE SETTINGS (user " + userId + ")"); |
| Cursor secureCursor = getAllSecureSettings(userId, ALL_COLUMNS); |
| dumpSettings(secureCursor, pw); |
| pw.println(); |
| |
| SettingsState secureSettings = mSettingsRegistry.getSettingsLocked( |
| SETTINGS_TYPE_SECURE, userId); |
| secureSettings.dumpHistoricalOperations(pw); |
| |
| pw.println("SYSTEM SETTINGS (user " + userId + ")"); |
| Cursor systemCursor = getAllSystemSettings(userId, ALL_COLUMNS); |
| dumpSettings(systemCursor, pw); |
| pw.println(); |
| |
| SettingsState systemSettings = mSettingsRegistry.getSettingsLocked( |
| SETTINGS_TYPE_SYSTEM, userId); |
| systemSettings.dumpHistoricalOperations(pw); |
| } |
| |
| private void dumpSettings(Cursor cursor, PrintWriter pw) { |
| if (cursor == null || !cursor.moveToFirst()) { |
| return; |
| } |
| |
| final int idColumnIdx = cursor.getColumnIndex(Settings.NameValueTable._ID); |
| final int nameColumnIdx = cursor.getColumnIndex(Settings.NameValueTable.NAME); |
| final int valueColumnIdx = cursor.getColumnIndex(Settings.NameValueTable.VALUE); |
| |
| do { |
| pw.append("_id:").append(toDumpString(cursor.getString(idColumnIdx))); |
| pw.append(" name:").append(toDumpString(cursor.getString(nameColumnIdx))); |
| pw.append(" value:").append(toDumpString(cursor.getString(valueColumnIdx))); |
| pw.println(); |
| } while (cursor.moveToNext()); |
| } |
| |
| private static String toDumpString(String s) { |
| if (s != null) { |
| return s; |
| } |
| return "{null}"; |
| } |
| |
| private void registerBroadcastReceivers() { |
| IntentFilter userFilter = new IntentFilter(); |
| userFilter.addAction(Intent.ACTION_USER_REMOVED); |
| userFilter.addAction(Intent.ACTION_USER_STOPPED); |
| |
| getContext().registerReceiver(new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, |
| UserHandle.USER_SYSTEM); |
| |
| switch (intent.getAction()) { |
| case Intent.ACTION_USER_REMOVED: { |
| synchronized (mLock) { |
| mSettingsRegistry.removeUserStateLocked(userId, true); |
| } |
| } break; |
| |
| case Intent.ACTION_USER_STOPPED: { |
| synchronized (mLock) { |
| mSettingsRegistry.removeUserStateLocked(userId, false); |
| } |
| } break; |
| } |
| } |
| }, userFilter); |
| |
| PackageMonitor monitor = new PackageMonitor() { |
| @Override |
| public void onPackageRemoved(String packageName, int uid) { |
| synchronized (mLock) { |
| mSettingsRegistry.onPackageRemovedLocked(packageName, |
| UserHandle.getUserId(uid)); |
| } |
| } |
| }; |
| |
| // package changes |
| monitor.register(getContext(), BackgroundThread.getHandler().getLooper(), |
| UserHandle.ALL, true); |
| } |
| |
| private void startWatchingUserRestrictionChanges() { |
| // TODO: The current design of settings looking different based on user restrictions |
| // should be reworked to keep them separate and system code should check the setting |
| // first followed by checking the user restriction before performing an operation. |
| UserManagerInternal userManager = LocalServices.getService(UserManagerInternal.class); |
| userManager.addUserRestrictionsListener((int userId, Bundle newRestrictions, |
| Bundle prevRestrictions) -> { |
| // We are changing the settings affected by restrictions to their current |
| // value with a forced update to ensure that all cross profile dependencies |
| // are taken into account. Also make sure the settings update to.. the same |
| // value passes the security checks, so clear binder calling id. |
| if (newRestrictions.containsKey(UserManager.DISALLOW_SHARE_LOCATION) |
| != prevRestrictions.containsKey(UserManager.DISALLOW_SHARE_LOCATION)) { |
| final long identity = Binder.clearCallingIdentity(); |
| try { |
| synchronized (mLock) { |
| Setting setting = getSecureSetting( |
| Settings.Secure.LOCATION_PROVIDERS_ALLOWED, userId); |
| updateSecureSetting(Settings.Secure.LOCATION_PROVIDERS_ALLOWED, |
| setting != null ? setting.getValue() : null, userId, true); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| if (newRestrictions.containsKey(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES) |
| != prevRestrictions.containsKey(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES)) { |
| final long identity = Binder.clearCallingIdentity(); |
| try { |
| synchronized (mLock) { |
| Setting setting = getGlobalSetting(Settings.Global.INSTALL_NON_MARKET_APPS); |
| updateGlobalSetting(Settings.Global.INSTALL_NON_MARKET_APPS, |
| setting != null ? setting.getValue() : null, userId, true); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| if (newRestrictions.containsKey(UserManager.DISALLOW_DEBUGGING_FEATURES) |
| != prevRestrictions.containsKey(UserManager.DISALLOW_DEBUGGING_FEATURES)) { |
| final long identity = Binder.clearCallingIdentity(); |
| try { |
| synchronized (mLock) { |
| Setting setting = getGlobalSetting(Settings.Global.ADB_ENABLED); |
| updateGlobalSetting(Settings.Global.ADB_ENABLED, |
| setting != null ? setting.getValue() : null, userId, true); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| if (newRestrictions.containsKey(UserManager.ENSURE_VERIFY_APPS) |
| != prevRestrictions.containsKey(UserManager.ENSURE_VERIFY_APPS)) { |
| final long identity = Binder.clearCallingIdentity(); |
| try { |
| synchronized (mLock) { |
| Setting enable = getGlobalSetting( |
| Settings.Global.PACKAGE_VERIFIER_ENABLE); |
| updateGlobalSetting(Settings.Global.PACKAGE_VERIFIER_ENABLE, |
| enable != null ? enable.getValue() : null, userId, true); |
| Setting include = getGlobalSetting( |
| Settings.Global.PACKAGE_VERIFIER_INCLUDE_ADB); |
| updateGlobalSetting(Settings.Global.PACKAGE_VERIFIER_INCLUDE_ADB, |
| include != null ? include.getValue() : null, userId, true); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| if (newRestrictions.containsKey(UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS) |
| != prevRestrictions.containsKey(UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS)) { |
| final long identity = Binder.clearCallingIdentity(); |
| try { |
| synchronized (mLock) { |
| Setting setting = getGlobalSetting( |
| Settings.Global.PREFERRED_NETWORK_MODE); |
| updateGlobalSetting(Settings.Global.PREFERRED_NETWORK_MODE, |
| setting != null ? setting.getValue() : null, userId, true); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| }); |
| } |
| |
| private Cursor getAllGlobalSettings(String[] projection) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "getAllGlobalSettings()"); |
| } |
| |
| synchronized (mLock) { |
| // Get the settings. |
| SettingsState settingsState = mSettingsRegistry.getSettingsLocked( |
| SETTINGS_TYPE_GLOBAL, UserHandle.USER_SYSTEM); |
| |
| List<String> names = settingsState.getSettingNamesLocked(); |
| |
| final int nameCount = names.size(); |
| |
| String[] normalizedProjection = normalizeProjection(projection); |
| MatrixCursor result = new MatrixCursor(normalizedProjection, nameCount); |
| |
| // Anyone can get the global settings, so no security checks. |
| for (int i = 0; i < nameCount; i++) { |
| String name = names.get(i); |
| Setting setting = settingsState.getSettingLocked(name); |
| appendSettingToCursor(result, setting); |
| } |
| |
| return result; |
| } |
| } |
| |
| private Setting getGlobalSetting(String name) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "getGlobalSetting(" + name + ")"); |
| } |
| |
| // Get the value. |
| synchronized (mLock) { |
| return mSettingsRegistry.getSettingLocked(SETTINGS_TYPE_GLOBAL, |
| UserHandle.USER_SYSTEM, name); |
| } |
| } |
| |
| private boolean updateGlobalSetting(String name, String value, int requestingUserId, |
| boolean forceNotify) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "updateGlobalSetting(" + name + ", " + value + ")"); |
| } |
| return mutateGlobalSetting(name, value, requestingUserId, MUTATION_OPERATION_UPDATE, |
| forceNotify); |
| } |
| |
| private boolean insertGlobalSetting(String name, String value, int requestingUserId, |
| boolean forceNotify) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "insertGlobalSetting(" + name + ", " + value + ")"); |
| } |
| return mutateGlobalSetting(name, value, requestingUserId, MUTATION_OPERATION_INSERT, |
| forceNotify); |
| } |
| |
| private boolean deleteGlobalSetting(String name, int requestingUserId, boolean forceNotify) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "deleteGlobalSettingLocked(" + name + ")"); |
| } |
| return mutateGlobalSetting(name, null, requestingUserId, MUTATION_OPERATION_DELETE, |
| forceNotify); |
| } |
| |
| private boolean mutateGlobalSetting(String name, String value, int requestingUserId, |
| int operation, boolean forceNotify) { |
| // Make sure the caller can change the settings - treated as secure. |
| enforceWritePermission(Manifest.permission.WRITE_SECURE_SETTINGS); |
| |
| // Resolve the userId on whose behalf the call is made. |
| final int callingUserId = resolveCallingUserIdEnforcingPermissionsLocked(requestingUserId); |
| |
| // If this is a setting that is currently restricted for this user, do not allow |
| // unrestricting changes. |
| if (isGlobalOrSecureSettingRestrictedForUser(name, callingUserId, value, |
| Binder.getCallingUid())) { |
| return false; |
| } |
| |
| // Perform the mutation. |
| synchronized (mLock) { |
| switch (operation) { |
| case MUTATION_OPERATION_INSERT: { |
| return mSettingsRegistry |
| .insertSettingLocked(SETTINGS_TYPE_GLOBAL, UserHandle.USER_SYSTEM, |
| name, value, getCallingPackage(), forceNotify); |
| } |
| |
| case MUTATION_OPERATION_DELETE: { |
| return mSettingsRegistry.deleteSettingLocked(SETTINGS_TYPE_GLOBAL, |
| UserHandle.USER_SYSTEM, name, forceNotify); |
| } |
| |
| case MUTATION_OPERATION_UPDATE: { |
| return mSettingsRegistry |
| .updateSettingLocked(SETTINGS_TYPE_GLOBAL, UserHandle.USER_SYSTEM, |
| name, value, getCallingPackage(), forceNotify); |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| private Cursor getAllSecureSettings(int userId, String[] projection) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "getAllSecureSettings(" + userId + ")"); |
| } |
| |
| // Resolve the userId on whose behalf the call is made. |
| final int callingUserId = resolveCallingUserIdEnforcingPermissionsLocked(userId); |
| |
| synchronized (mLock) { |
| List<String> names = mSettingsRegistry.getSettingsNamesLocked( |
| SETTINGS_TYPE_SECURE, callingUserId); |
| |
| final int nameCount = names.size(); |
| |
| String[] normalizedProjection = normalizeProjection(projection); |
| MatrixCursor result = new MatrixCursor(normalizedProjection, nameCount); |
| |
| for (int i = 0; i < nameCount; i++) { |
| String name = names.get(i); |
| // Determine the owning user as some profile settings are cloned from the parent. |
| final int owningUserId = resolveOwningUserIdForSecureSettingLocked(callingUserId, |
| name); |
| |
| // Special case for location (sigh). |
| if (isLocationProvidersAllowedRestricted(name, callingUserId, owningUserId)) { |
| continue; |
| } |
| |
| Setting setting = mSettingsRegistry.getSettingLocked( |
| SETTINGS_TYPE_SECURE, owningUserId, name); |
| appendSettingToCursor(result, setting); |
| } |
| |
| return result; |
| } |
| } |
| |
| private Setting getSecureSetting(String name, int requestingUserId) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "getSecureSetting(" + name + ", " + requestingUserId + ")"); |
| } |
| |
| // Resolve the userId on whose behalf the call is made. |
| final int callingUserId = resolveCallingUserIdEnforcingPermissionsLocked(requestingUserId); |
| |
| // Determine the owning user as some profile settings are cloned from the parent. |
| final int owningUserId = resolveOwningUserIdForSecureSettingLocked(callingUserId, name); |
| |
| // Special case for location (sigh). |
| if (isLocationProvidersAllowedRestricted(name, callingUserId, owningUserId)) { |
| return mSettingsRegistry.getSettingsLocked(SETTINGS_TYPE_SECURE, |
| owningUserId).getNullSetting(); |
| } |
| |
| // Get the value. |
| synchronized (mLock) { |
| return mSettingsRegistry.getSettingLocked(SETTINGS_TYPE_SECURE, |
| owningUserId, name); |
| } |
| } |
| |
| private boolean insertSecureSetting(String name, String value, int requestingUserId, |
| boolean forceNotify) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "insertSecureSetting(" + name + ", " + value + ", " |
| + requestingUserId + ")"); |
| } |
| |
| return mutateSecureSetting(name, value, requestingUserId, MUTATION_OPERATION_INSERT, |
| forceNotify); |
| } |
| |
| private boolean deleteSecureSetting(String name, int requestingUserId, boolean forceNotify) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "deleteSecureSetting(" + name + ", " + requestingUserId + ")"); |
| } |
| |
| return mutateSecureSetting(name, null, requestingUserId, MUTATION_OPERATION_DELETE, |
| forceNotify); |
| } |
| |
| private boolean updateSecureSetting(String name, String value, int requestingUserId, |
| boolean forceNotify) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "updateSecureSetting(" + name + ", " + value + ", " |
| + requestingUserId + ")"); |
| } |
| |
| return mutateSecureSetting(name, value, requestingUserId, MUTATION_OPERATION_UPDATE, |
| forceNotify); |
| } |
| |
| private boolean mutateSecureSetting(String name, String value, int requestingUserId, |
| int operation, boolean forceNotify) { |
| // Make sure the caller can change the settings. |
| enforceWritePermission(Manifest.permission.WRITE_SECURE_SETTINGS); |
| |
| // Resolve the userId on whose behalf the call is made. |
| final int callingUserId = resolveCallingUserIdEnforcingPermissionsLocked(requestingUserId); |
| |
| // If this is a setting that is currently restricted for this user, do not allow |
| // unrestricting changes. |
| if (isGlobalOrSecureSettingRestrictedForUser(name, callingUserId, value, |
| Binder.getCallingUid())) { |
| return false; |
| } |
| |
| // Determine the owning user as some profile settings are cloned from the parent. |
| final int owningUserId = resolveOwningUserIdForSecureSettingLocked(callingUserId, name); |
| |
| // Only the owning user can change the setting. |
| if (owningUserId != callingUserId) { |
| return false; |
| } |
| |
| // Special cases for location providers (sigh). |
| if (Settings.Secure.LOCATION_PROVIDERS_ALLOWED.equals(name)) { |
| return updateLocationProvidersAllowedLocked(value, owningUserId, forceNotify); |
| } |
| |
| // Mutate the value. |
| synchronized (mLock) { |
| switch (operation) { |
| case MUTATION_OPERATION_INSERT: { |
| return mSettingsRegistry.insertSettingLocked(SETTINGS_TYPE_SECURE, |
| owningUserId, name, value, getCallingPackage(), forceNotify); |
| } |
| |
| case MUTATION_OPERATION_DELETE: { |
| return mSettingsRegistry.deleteSettingLocked(SETTINGS_TYPE_SECURE, |
| owningUserId, name, forceNotify); |
| } |
| |
| case MUTATION_OPERATION_UPDATE: { |
| return mSettingsRegistry.updateSettingLocked(SETTINGS_TYPE_SECURE, |
| owningUserId, name, value, getCallingPackage(), forceNotify); |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| private Cursor getAllSystemSettings(int userId, String[] projection) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "getAllSecureSystem(" + userId + ")"); |
| } |
| |
| // Resolve the userId on whose behalf the call is made. |
| final int callingUserId = resolveCallingUserIdEnforcingPermissionsLocked(userId); |
| |
| synchronized (mLock) { |
| List<String> names = mSettingsRegistry.getSettingsNamesLocked( |
| SETTINGS_TYPE_SYSTEM, callingUserId); |
| |
| final int nameCount = names.size(); |
| |
| String[] normalizedProjection = normalizeProjection(projection); |
| MatrixCursor result = new MatrixCursor(normalizedProjection, nameCount); |
| |
| for (int i = 0; i < nameCount; i++) { |
| String name = names.get(i); |
| |
| // Determine the owning user as some profile settings are cloned from the parent. |
| final int owningUserId = resolveOwningUserIdForSystemSettingLocked(callingUserId, |
| name); |
| |
| Setting setting = mSettingsRegistry.getSettingLocked( |
| SETTINGS_TYPE_SYSTEM, owningUserId, name); |
| appendSettingToCursor(result, setting); |
| } |
| |
| return result; |
| } |
| } |
| |
| private Setting getSystemSetting(String name, int requestingUserId) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "getSystemSetting(" + name + ", " + requestingUserId + ")"); |
| } |
| |
| // Resolve the userId on whose behalf the call is made. |
| final int callingUserId = resolveCallingUserIdEnforcingPermissionsLocked(requestingUserId); |
| |
| // Determine the owning user as some profile settings are cloned from the parent. |
| final int owningUserId = resolveOwningUserIdForSystemSettingLocked(callingUserId, name); |
| |
| // Get the value. |
| synchronized (mLock) { |
| return mSettingsRegistry.getSettingLocked(SETTINGS_TYPE_SYSTEM, owningUserId, name); |
| } |
| } |
| |
| private boolean insertSystemSetting(String name, String value, int requestingUserId) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "insertSystemSetting(" + name + ", " + value + ", " |
| + requestingUserId + ")"); |
| } |
| |
| return mutateSystemSetting(name, value, requestingUserId, MUTATION_OPERATION_INSERT); |
| } |
| |
| private boolean deleteSystemSetting(String name, int requestingUserId) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "deleteSystemSetting(" + name + ", " + requestingUserId + ")"); |
| } |
| |
| return mutateSystemSetting(name, null, requestingUserId, MUTATION_OPERATION_DELETE); |
| } |
| |
| private boolean updateSystemSetting(String name, String value, int requestingUserId) { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "updateSystemSetting(" + name + ", " + value + ", " |
| + requestingUserId + ")"); |
| } |
| |
| return mutateSystemSetting(name, value, requestingUserId, MUTATION_OPERATION_UPDATE); |
| } |
| |
| private boolean mutateSystemSetting(String name, String value, int runAsUserId, |
| int operation) { |
| if (!hasWriteSecureSettingsPermission()) { |
| // If the caller doesn't hold WRITE_SECURE_SETTINGS, we verify whether this |
| // operation is allowed for the calling package through appops. |
| if (!Settings.checkAndNoteWriteSettingsOperation(getContext(), |
| Binder.getCallingUid(), getCallingPackage(), true)) { |
| return false; |
| } |
| } |
| |
| // Resolve the userId on whose behalf the call is made. |
| final int callingUserId = resolveCallingUserIdEnforcingPermissionsLocked(runAsUserId); |
| |
| // Enforce what the calling package can mutate the system settings. |
| enforceRestrictedSystemSettingsMutationForCallingPackage(operation, name, callingUserId); |
| |
| // Determine the owning user as some profile settings are cloned from the parent. |
| final int owningUserId = resolveOwningUserIdForSystemSettingLocked(callingUserId, name); |
| |
| // Only the owning user id can change the setting. |
| if (owningUserId != callingUserId) { |
| return false; |
| } |
| |
| // Invalidate any relevant cache files |
| String cacheName = null; |
| if (Settings.System.RINGTONE.equals(name)) { |
| cacheName = Settings.System.RINGTONE_CACHE; |
| } else if (Settings.System.NOTIFICATION_SOUND.equals(name)) { |
| cacheName = Settings.System.NOTIFICATION_SOUND_CACHE; |
| } else if (Settings.System.ALARM_ALERT.equals(name)) { |
| cacheName = Settings.System.ALARM_ALERT_CACHE; |
| } |
| if (cacheName != null) { |
| final File cacheFile = new File( |
| getRingtoneCacheDir(UserHandle.getCallingUserId()), cacheName); |
| cacheFile.delete(); |
| } |
| |
| // Mutate the value. |
| synchronized (mLock) { |
| switch (operation) { |
| case MUTATION_OPERATION_INSERT: { |
| validateSystemSettingValue(name, value); |
| return mSettingsRegistry.insertSettingLocked(SETTINGS_TYPE_SYSTEM, |
| owningUserId, name, value, getCallingPackage(), false); |
| } |
| |
| case MUTATION_OPERATION_DELETE: { |
| return mSettingsRegistry.deleteSettingLocked(SETTINGS_TYPE_SYSTEM, |
| owningUserId, name, false); |
| } |
| |
| case MUTATION_OPERATION_UPDATE: { |
| validateSystemSettingValue(name, value); |
| return mSettingsRegistry.updateSettingLocked(SETTINGS_TYPE_SYSTEM, |
| owningUserId, name, value, getCallingPackage(), false); |
| } |
| } |
| |
| return false; |
| } |
| } |
| |
| private boolean hasWriteSecureSettingsPermission() { |
| // Write secure settings is a more protected permission. If caller has it we are good. |
| if (getContext().checkCallingOrSelfPermission(Manifest.permission.WRITE_SECURE_SETTINGS) |
| == PackageManager.PERMISSION_GRANTED) { |
| return true; |
| } |
| |
| return false; |
| } |
| |
| private void validateSystemSettingValue(String name, String value) { |
| Settings.System.Validator validator = Settings.System.VALIDATORS.get(name); |
| if (validator != null && !validator.validate(value)) { |
| throw new IllegalArgumentException("Invalid value: " + value |
| + " for setting: " + name); |
| } |
| } |
| |
| private boolean isLocationProvidersAllowedRestricted(String name, int callingUserId, |
| int owningUserId) { |
| // Optimization - location providers are restricted only for managed profiles. |
| if (callingUserId == owningUserId) { |
| return false; |
| } |
| if (Settings.Secure.LOCATION_PROVIDERS_ALLOWED.equals(name) |
| && mUserManager.hasUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, |
| new UserHandle(callingUserId))) { |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Checks whether changing a setting to a value is prohibited by the corresponding user |
| * restriction. |
| * |
| * <p>See also {@link com.android.server.pm.UserRestrictionsUtils#applyUserRestriction( |
| * Context, int, String, boolean)}, which should be in sync with this method. |
| * |
| * @return true if the change is prohibited, false if the change is allowed. |
| */ |
| private boolean isGlobalOrSecureSettingRestrictedForUser(String setting, int userId, |
| String value, int callingUid) { |
| String restriction; |
| switch (setting) { |
| case Settings.Secure.LOCATION_MODE: |
| // Note LOCATION_MODE will be converted into LOCATION_PROVIDERS_ALLOWED |
| // in android.provider.Settings.Secure.putStringForUser(), so we shouldn't come |
| // here normally, but we still protect it here from a direct provider write. |
| if (String.valueOf(Settings.Secure.LOCATION_MODE_OFF).equals(value)) return false; |
| restriction = UserManager.DISALLOW_SHARE_LOCATION; |
| break; |
| |
| case Settings.Secure.LOCATION_PROVIDERS_ALLOWED: |
| // See SettingsProvider.updateLocationProvidersAllowedLocked. "-" is to disable |
| // a provider, which should be allowed even if the user restriction is set. |
| if (value != null && value.startsWith("-")) return false; |
| restriction = UserManager.DISALLOW_SHARE_LOCATION; |
| break; |
| |
| case Settings.Secure.INSTALL_NON_MARKET_APPS: |
| if ("0".equals(value)) return false; |
| restriction = UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES; |
| break; |
| |
| case Settings.Global.ADB_ENABLED: |
| if ("0".equals(value)) return false; |
| restriction = UserManager.DISALLOW_DEBUGGING_FEATURES; |
| break; |
| |
| case Settings.Global.PACKAGE_VERIFIER_ENABLE: |
| case Settings.Global.PACKAGE_VERIFIER_INCLUDE_ADB: |
| if ("1".equals(value)) return false; |
| restriction = UserManager.ENSURE_VERIFY_APPS; |
| break; |
| |
| case Settings.Global.PREFERRED_NETWORK_MODE: |
| restriction = UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS; |
| break; |
| |
| case Settings.Secure.ALWAYS_ON_VPN_APP: |
| case Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN: |
| // Whitelist system uid (ConnectivityService) and root uid to change always-on vpn |
| if (callingUid == Process.SYSTEM_UID || callingUid == Process.ROOT_UID) { |
| return false; |
| } |
| restriction = UserManager.DISALLOW_CONFIG_VPN; |
| break; |
| |
| case Settings.Global.SAFE_BOOT_DISALLOWED: |
| if ("1".equals(value)) return false; |
| restriction = UserManager.DISALLOW_SAFE_BOOT; |
| break; |
| |
| default: |
| if (setting != null && setting.startsWith(Settings.Global.DATA_ROAMING)) { |
| if ("0".equals(value)) return false; |
| restriction = UserManager.DISALLOW_DATA_ROAMING; |
| break; |
| } |
| return false; |
| } |
| |
| return mUserManager.hasUserRestriction(restriction, UserHandle.of(userId)); |
| } |
| |
| private int resolveOwningUserIdForSecureSettingLocked(int userId, String setting) { |
| return resolveOwningUserIdLocked(userId, sSecureCloneToManagedSettings, setting); |
| } |
| |
| private int resolveOwningUserIdForSystemSettingLocked(int userId, String setting) { |
| return resolveOwningUserIdLocked(userId, sSystemCloneToManagedSettings, setting); |
| } |
| |
| private int resolveOwningUserIdLocked(int userId, Set<String> keys, String name) { |
| final int parentId = getGroupParentLocked(userId); |
| if (parentId != userId && keys.contains(name)) { |
| return parentId; |
| } |
| return userId; |
| } |
| |
| private void enforceRestrictedSystemSettingsMutationForCallingPackage(int operation, |
| String name, int userId) { |
| // System/root/shell can mutate whatever secure settings they want. |
| final int callingUid = Binder.getCallingUid(); |
| if (callingUid == android.os.Process.SYSTEM_UID |
| || callingUid == Process.SHELL_UID |
| || callingUid == Process.ROOT_UID) { |
| return; |
| } |
| |
| switch (operation) { |
| case MUTATION_OPERATION_INSERT: |
| // Insert updates. |
| case MUTATION_OPERATION_UPDATE: { |
| if (Settings.System.PUBLIC_SETTINGS.contains(name)) { |
| return; |
| } |
| |
| // The calling package is already verified. |
| PackageInfo packageInfo = getCallingPackageInfoOrThrow(userId); |
| |
| // Privileged apps can do whatever they want. |
| if ((packageInfo.applicationInfo.privateFlags |
| & ApplicationInfo.PRIVATE_FLAG_PRIVILEGED) != 0) { |
| return; |
| } |
| |
| warnOrThrowForUndesiredSecureSettingsMutationForTargetSdk( |
| packageInfo.applicationInfo.targetSdkVersion, name); |
| } break; |
| |
| case MUTATION_OPERATION_DELETE: { |
| if (Settings.System.PUBLIC_SETTINGS.contains(name) |
| || Settings.System.PRIVATE_SETTINGS.contains(name)) { |
| throw new IllegalArgumentException("You cannot delete system defined" |
| + " secure settings."); |
| } |
| |
| // The calling package is already verified. |
| PackageInfo packageInfo = getCallingPackageInfoOrThrow(userId); |
| |
| // Privileged apps can do whatever they want. |
| if ((packageInfo.applicationInfo.privateFlags & |
| ApplicationInfo.PRIVATE_FLAG_PRIVILEGED) != 0) { |
| return; |
| } |
| |
| warnOrThrowForUndesiredSecureSettingsMutationForTargetSdk( |
| packageInfo.applicationInfo.targetSdkVersion, name); |
| } break; |
| } |
| } |
| |
| private PackageInfo getCallingPackageInfoOrThrow(int userId) { |
| try { |
| PackageInfo packageInfo = mPackageManager.getPackageInfo( |
| getCallingPackage(), 0, userId); |
| if (packageInfo != null) { |
| return packageInfo; |
| } |
| } catch (RemoteException e) { |
| /* ignore */ |
| } |
| throw new IllegalStateException("Calling package doesn't exist"); |
| } |
| |
| private int getGroupParentLocked(int userId) { |
| // Most frequent use case. |
| if (userId == UserHandle.USER_SYSTEM) { |
| return userId; |
| } |
| // We are in the same process with the user manager and the returned |
| // user info is a cached instance, so just look up instead of cache. |
| final long identity = Binder.clearCallingIdentity(); |
| try { |
| // Just a lookup and not reentrant, so holding a lock is fine. |
| UserInfo userInfo = mUserManager.getProfileParent(userId); |
| return (userInfo != null) ? userInfo.id : userId; |
| } finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| |
| private void enforceWritePermission(String permission) { |
| if (getContext().checkCallingOrSelfPermission(permission) |
| != PackageManager.PERMISSION_GRANTED) { |
| throw new SecurityException("Permission denial: writing to settings requires:" |
| + permission); |
| } |
| } |
| |
| /* |
| * Used to parse changes to the value of Settings.Secure.LOCATION_PROVIDERS_ALLOWED. |
| * This setting contains a list of the currently enabled location providers. |
| * But helper functions in android.providers.Settings can enable or disable |
| * a single provider by using a "+" or "-" prefix before the provider name. |
| * |
| * <p>See also {@link #isGlobalOrSecureSettingRestrictedForUser()}. If DISALLOW_SHARE_LOCATION |
| * is set, the said method will only allow values with the "-" prefix. |
| * |
| * @returns whether the enabled location providers changed. |
| */ |
| private boolean updateLocationProvidersAllowedLocked(String value, int owningUserId, |
| boolean forceNotify) { |
| if (TextUtils.isEmpty(value)) { |
| return false; |
| } |
| |
| final char prefix = value.charAt(0); |
| if (prefix != '+' && prefix != '-') { |
| if (forceNotify) { |
| final int key = makeKey(SETTINGS_TYPE_SECURE, owningUserId); |
| mSettingsRegistry.notifyForSettingsChange(key, |
| Settings.Secure.LOCATION_PROVIDERS_ALLOWED); |
| } |
| return false; |
| } |
| |
| // skip prefix |
| value = value.substring(1); |
| |
| Setting settingValue = getSecureSetting( |
| Settings.Secure.LOCATION_PROVIDERS_ALLOWED, owningUserId); |
| |
| String oldProviders = (settingValue != null) ? settingValue.getValue() : ""; |
| |
| int index = oldProviders.indexOf(value); |
| int end = index + value.length(); |
| |
| // check for commas to avoid matching on partial string |
| if (index > 0 && oldProviders.charAt(index - 1) != ',') { |
| index = -1; |
| } |
| |
| // check for commas to avoid matching on partial string |
| if (end < oldProviders.length() && oldProviders.charAt(end) != ',') { |
| index = -1; |
| } |
| |
| String newProviders; |
| |
| if (prefix == '+' && index < 0) { |
| // append the provider to the list if not present |
| if (oldProviders.length() == 0) { |
| newProviders = value; |
| } else { |
| newProviders = oldProviders + ',' + value; |
| } |
| } else if (prefix == '-' && index >= 0) { |
| // remove the provider from the list if present |
| // remove leading or trailing comma |
| if (index > 0) { |
| index--; |
| } else if (end < oldProviders.length()) { |
| end++; |
| } |
| |
| newProviders = oldProviders.substring(0, index); |
| if (end < oldProviders.length()) { |
| newProviders += oldProviders.substring(end); |
| } |
| } else { |
| // nothing changed, so no need to update the database |
| if (forceNotify) { |
| final int key = makeKey(SETTINGS_TYPE_SECURE, owningUserId); |
| mSettingsRegistry.notifyForSettingsChange(key, |
| Settings.Secure.LOCATION_PROVIDERS_ALLOWED); |
| } |
| return false; |
| } |
| |
| return mSettingsRegistry.insertSettingLocked(SETTINGS_TYPE_SECURE, |
| owningUserId, Settings.Secure.LOCATION_PROVIDERS_ALLOWED, newProviders, |
| getCallingPackage(), forceNotify); |
| } |
| |
| private static void warnOrThrowForUndesiredSecureSettingsMutationForTargetSdk( |
| int targetSdkVersion, String name) { |
| // If the app targets Lollipop MR1 or older SDK we warn, otherwise crash. |
| if (targetSdkVersion <= Build.VERSION_CODES.LOLLIPOP_MR1) { |
| if (Settings.System.PRIVATE_SETTINGS.contains(name)) { |
| Slog.w(LOG_TAG, "You shouldn't not change private system settings." |
| + " This will soon become an error."); |
| } else { |
| Slog.w(LOG_TAG, "You shouldn't keep your settings in the secure settings." |
| + " This will soon become an error."); |
| } |
| } else { |
| if (Settings.System.PRIVATE_SETTINGS.contains(name)) { |
| throw new IllegalArgumentException("You cannot change private secure settings."); |
| } else { |
| throw new IllegalArgumentException("You cannot keep your settings in" |
| + " the secure settings."); |
| } |
| } |
| } |
| |
| private static int resolveCallingUserIdEnforcingPermissionsLocked(int requestingUserId) { |
| if (requestingUserId == UserHandle.getCallingUserId()) { |
| return requestingUserId; |
| } |
| return ActivityManager.handleIncomingUser(Binder.getCallingPid(), |
| Binder.getCallingUid(), requestingUserId, false, true, |
| "get/set setting for user", null); |
| } |
| |
| private Bundle packageValueForCallResult(Setting setting, |
| boolean trackingGeneration) { |
| if (!trackingGeneration) { |
| if (setting.isNull()) { |
| return NULL_SETTING_BUNDLE; |
| } |
| return Bundle.forPair(Settings.NameValueTable.VALUE, setting.getValue()); |
| } |
| Bundle result = new Bundle(); |
| result.putString(Settings.NameValueTable.VALUE, |
| !setting.isNull() ? setting.getValue() : null); |
| mSettingsRegistry.mGenerationRegistry.addGenerationData(result, setting.getkey()); |
| return result; |
| } |
| |
| private static int getRequestingUserId(Bundle args) { |
| final int callingUserId = UserHandle.getCallingUserId(); |
| return (args != null) ? args.getInt(Settings.CALL_METHOD_USER_KEY, callingUserId) |
| : callingUserId; |
| } |
| |
| private boolean isTrackingGeneration(Bundle args) { |
| return args != null && args.containsKey(Settings.CALL_METHOD_TRACK_GENERATION_KEY); |
| } |
| |
| private static String getSettingValue(Bundle args) { |
| return (args != null) ? args.getString(Settings.NameValueTable.VALUE) : null; |
| } |
| |
| private static String getValidTableOrThrow(Uri uri) { |
| if (uri.getPathSegments().size() > 0) { |
| String table = uri.getPathSegments().get(0); |
| if (DatabaseHelper.isValidTable(table)) { |
| return table; |
| } |
| throw new IllegalArgumentException("Bad root path: " + table); |
| } |
| throw new IllegalArgumentException("Invalid URI:" + uri); |
| } |
| |
| private static MatrixCursor packageSettingForQuery(Setting setting, String[] projection) { |
| if (setting.isNull()) { |
| return new MatrixCursor(projection, 0); |
| } |
| MatrixCursor cursor = new MatrixCursor(projection, 1); |
| appendSettingToCursor(cursor, setting); |
| return cursor; |
| } |
| |
| private static String[] normalizeProjection(String[] projection) { |
| if (projection == null) { |
| return ALL_COLUMNS; |
| } |
| |
| final int columnCount = projection.length; |
| for (int i = 0; i < columnCount; i++) { |
| String column = projection[i]; |
| if (!ArrayUtils.contains(ALL_COLUMNS, column)) { |
| throw new IllegalArgumentException("Invalid column: " + column); |
| } |
| } |
| |
| return projection; |
| } |
| |
| private static void appendSettingToCursor(MatrixCursor cursor, Setting setting) { |
| if (setting.isNull()) { |
| return; |
| } |
| final int columnCount = cursor.getColumnCount(); |
| |
| String[] values = new String[columnCount]; |
| |
| for (int i = 0; i < columnCount; i++) { |
| String column = cursor.getColumnName(i); |
| |
| switch (column) { |
| case Settings.NameValueTable._ID: { |
| values[i] = setting.getId(); |
| } break; |
| |
| case Settings.NameValueTable.NAME: { |
| values[i] = setting.getName(); |
| } break; |
| |
| case Settings.NameValueTable.VALUE: { |
| values[i] = setting.getValue(); |
| } break; |
| } |
| } |
| |
| cursor.addRow(values); |
| } |
| |
| private static boolean isKeyValid(String key) { |
| return !(TextUtils.isEmpty(key) || SettingsState.isBinary(key)); |
| } |
| |
| private static final class Arguments { |
| private static final Pattern WHERE_PATTERN_WITH_PARAM_NO_BRACKETS = |
| Pattern.compile("[\\s]*name[\\s]*=[\\s]*\\?[\\s]*"); |
| |
| private static final Pattern WHERE_PATTERN_WITH_PARAM_IN_BRACKETS = |
| Pattern.compile("[\\s]*\\([\\s]*name[\\s]*=[\\s]*\\?[\\s]*\\)[\\s]*"); |
| |
| private static final Pattern WHERE_PATTERN_NO_PARAM_IN_BRACKETS = |
| Pattern.compile("[\\s]*\\([\\s]*name[\\s]*=[\\s]*['\"].*['\"][\\s]*\\)[\\s]*"); |
| |
| private static final Pattern WHERE_PATTERN_NO_PARAM_NO_BRACKETS = |
| Pattern.compile("[\\s]*name[\\s]*=[\\s]*['\"].*['\"][\\s]*"); |
| |
| public final String table; |
| public final String name; |
| |
| public Arguments(Uri uri, String where, String[] whereArgs, boolean supportAll) { |
| final int segmentSize = uri.getPathSegments().size(); |
| switch (segmentSize) { |
| case 1: { |
| if (where != null |
| && (WHERE_PATTERN_WITH_PARAM_NO_BRACKETS.matcher(where).matches() |
| || WHERE_PATTERN_WITH_PARAM_IN_BRACKETS.matcher(where).matches()) |
| && whereArgs.length == 1) { |
| name = whereArgs[0]; |
| table = computeTableForSetting(uri, name); |
| return; |
| } else if (where != null |
| && (WHERE_PATTERN_NO_PARAM_NO_BRACKETS.matcher(where).matches() |
| || WHERE_PATTERN_NO_PARAM_IN_BRACKETS.matcher(where).matches())) { |
| final int startIndex = Math.max(where.indexOf("'"), |
| where.indexOf("\"")) + 1; |
| final int endIndex = Math.max(where.lastIndexOf("'"), |
| where.lastIndexOf("\"")); |
| name = where.substring(startIndex, endIndex); |
| table = computeTableForSetting(uri, name); |
| return; |
| } else if (supportAll && where == null && whereArgs == null) { |
| name = null; |
| table = computeTableForSetting(uri, null); |
| return; |
| } |
| } break; |
| |
| case 2: { |
| if (where == null && whereArgs == null) { |
| name = uri.getPathSegments().get(1); |
| table = computeTableForSetting(uri, name); |
| return; |
| } |
| } break; |
| } |
| |
| EventLogTags.writeUnsupportedSettingsQuery( |
| uri.toSafeString(), where, Arrays.toString(whereArgs)); |
| String message = String.format( "Supported SQL:\n" |
| + " uri content://some_table/some_property with null where and where args\n" |
| + " uri content://some_table with query name=? and single name as arg\n" |
| + " uri content://some_table with query name=some_name and null args\n" |
| + " but got - uri:%1s, where:%2s whereArgs:%3s", uri, where, |
| Arrays.toString(whereArgs)); |
| throw new IllegalArgumentException(message); |
| } |
| |
| private static String computeTableForSetting(Uri uri, String name) { |
| String table = getValidTableOrThrow(uri); |
| |
| if (name != null) { |
| if (sSystemMovedToSecureSettings.contains(name)) { |
| table = TABLE_SECURE; |
| } |
| |
| if (sSystemMovedToGlobalSettings.contains(name)) { |
| table = TABLE_GLOBAL; |
| } |
| |
| if (sSecureMovedToGlobalSettings.contains(name)) { |
| table = TABLE_GLOBAL; |
| } |
| |
| if (sGlobalMovedToSecureSettings.contains(name)) { |
| table = TABLE_SECURE; |
| } |
| } |
| |
| return table; |
| } |
| } |
| |
| final class SettingsRegistry { |
| private static final String DROPBOX_TAG_USERLOG = "restricted_profile_ssaid"; |
| |
| private static final String SETTINGS_FILE_GLOBAL = "settings_global.xml"; |
| private static final String SETTINGS_FILE_SYSTEM = "settings_system.xml"; |
| private static final String SETTINGS_FILE_SECURE = "settings_secure.xml"; |
| |
| private final SparseArray<SettingsState> mSettingsStates = new SparseArray<>(); |
| |
| private GenerationRegistry mGenerationRegistry; |
| |
| private final Handler mHandler; |
| |
| private final BackupManager mBackupManager; |
| |
| public SettingsRegistry() { |
| mHandler = new MyHandler(getContext().getMainLooper()); |
| mGenerationRegistry = new GenerationRegistry(mLock); |
| mBackupManager = new BackupManager(getContext()); |
| migrateAllLegacySettingsIfNeeded(); |
| } |
| |
| public List<String> getSettingsNamesLocked(int type, int userId) { |
| final int key = makeKey(type, userId); |
| SettingsState settingsState = peekSettingsStateLocked(key); |
| return settingsState.getSettingNamesLocked(); |
| } |
| |
| public SettingsState getSettingsLocked(int type, int userId) { |
| final int key = makeKey(type, userId); |
| return peekSettingsStateLocked(key); |
| } |
| |
| public void ensureSettingsForUserLocked(int userId) { |
| // Migrate the setting for this user if needed. |
| migrateLegacySettingsForUserIfNeededLocked(userId); |
| |
| // Ensure global settings loaded if owner. |
| if (userId == UserHandle.USER_SYSTEM) { |
| final int globalKey = makeKey(SETTINGS_TYPE_GLOBAL, UserHandle.USER_SYSTEM); |
| ensureSettingsStateLocked(globalKey); |
| } |
| |
| // Ensure secure settings loaded. |
| final int secureKey = makeKey(SETTINGS_TYPE_SECURE, userId); |
| ensureSettingsStateLocked(secureKey); |
| |
| // Make sure the secure settings have an Android id set. |
| SettingsState secureSettings = getSettingsLocked(SETTINGS_TYPE_SECURE, userId); |
| ensureSecureSettingAndroidIdSetLocked(secureSettings); |
| |
| // Ensure system settings loaded. |
| final int systemKey = makeKey(SETTINGS_TYPE_SYSTEM, userId); |
| ensureSettingsStateLocked(systemKey); |
| |
| // Upgrade the settings to the latest version. |
| UpgradeController upgrader = new UpgradeController(userId); |
| upgrader.upgradeIfNeededLocked(); |
| } |
| |
| private void ensureSettingsStateLocked(int key) { |
| if (mSettingsStates.get(key) == null) { |
| final int maxBytesPerPackage = getMaxBytesPerPackageForType(getTypeFromKey(key)); |
| SettingsState settingsState = new SettingsState(mLock, getSettingsFile(key), key, |
| maxBytesPerPackage, mHandlerThread.getLooper()); |
| mSettingsStates.put(key, settingsState); |
| } |
| } |
| |
| public void removeUserStateLocked(int userId, boolean permanently) { |
| // We always keep the global settings in memory. |
| |
| // Nuke system settings. |
| final int systemKey = makeKey(SETTINGS_TYPE_SYSTEM, userId); |
| final SettingsState systemSettingsState = mSettingsStates.get(systemKey); |
| if (systemSettingsState != null) { |
| if (permanently) { |
| mSettingsStates.remove(systemKey); |
| systemSettingsState.destroyLocked(null); |
| } else { |
| systemSettingsState.destroyLocked(new Runnable() { |
| @Override |
| public void run() { |
| mSettingsStates.remove(systemKey); |
| } |
| }); |
| } |
| } |
| |
| // Nuke secure settings. |
| final int secureKey = makeKey(SETTINGS_TYPE_SECURE, userId); |
| final SettingsState secureSettingsState = mSettingsStates.get(secureKey); |
| if (secureSettingsState != null) { |
| if (permanently) { |
| mSettingsStates.remove(secureKey); |
| secureSettingsState.destroyLocked(null); |
| } else { |
| secureSettingsState.destroyLocked(new Runnable() { |
| @Override |
| public void run() { |
| mSettingsStates.remove(secureKey); |
| } |
| }); |
| } |
| } |
| |
| // Nuke generation tracking data |
| mGenerationRegistry.onUserRemoved(userId); |
| } |
| |
| public boolean insertSettingLocked(int type, int userId, String name, String value, |
| String packageName, boolean forceNotify) { |
| final int key = makeKey(type, userId); |
| |
| SettingsState settingsState = peekSettingsStateLocked(key); |
| final boolean success = settingsState.insertSettingLocked(name, value, packageName); |
| |
| if (forceNotify || success) { |
| notifyForSettingsChange(key, name); |
| } |
| return success; |
| } |
| |
| public boolean deleteSettingLocked(int type, int userId, String name, boolean forceNotify) { |
| final int key = makeKey(type, userId); |
| |
| SettingsState settingsState = peekSettingsStateLocked(key); |
| final boolean success = settingsState.deleteSettingLocked(name); |
| |
| if (forceNotify || success) { |
| notifyForSettingsChange(key, name); |
| } |
| return success; |
| } |
| |
| public Setting getSettingLocked(int type, int userId, String name) { |
| final int key = makeKey(type, userId); |
| |
| SettingsState settingsState = peekSettingsStateLocked(key); |
| return settingsState.getSettingLocked(name); |
| } |
| |
| public boolean updateSettingLocked(int type, int userId, String name, String value, |
| String packageName, boolean forceNotify) { |
| final int key = makeKey(type, userId); |
| |
| SettingsState settingsState = peekSettingsStateLocked(key); |
| final boolean success = settingsState.updateSettingLocked(name, value, packageName); |
| |
| if (forceNotify || success) { |
| notifyForSettingsChange(key, name); |
| } |
| |
| return success; |
| } |
| |
| public void onPackageRemovedLocked(String packageName, int userId) { |
| // Global and secure settings are signature protected. Apps signed |
| // by the platform certificate are generally not uninstalled and |
| // the main exception is tests. We trust components signed |
| // by the platform certificate and do not do a clean up after them. |
| |
| final int systemKey = makeKey(SETTINGS_TYPE_SYSTEM, userId); |
| SettingsState systemSettings = mSettingsStates.get(systemKey); |
| if (systemSettings != null) { |
| systemSettings.onPackageRemovedLocked(packageName); |
| } |
| } |
| |
| private SettingsState peekSettingsStateLocked(int key) { |
| SettingsState settingsState = mSettingsStates.get(key); |
| if (settingsState != null) { |
| return settingsState; |
| } |
| |
| ensureSettingsForUserLocked(getUserIdFromKey(key)); |
| return mSettingsStates.get(key); |
| } |
| |
| private void migrateAllLegacySettingsIfNeeded() { |
| synchronized (mLock) { |
| final int key = makeKey(SETTINGS_TYPE_GLOBAL, UserHandle.USER_SYSTEM); |
| File globalFile = getSettingsFile(key); |
| if (globalFile.exists()) { |
| return; |
| } |
| |
| final long identity = Binder.clearCallingIdentity(); |
| try { |
| List<UserInfo> users = mUserManager.getUsers(true); |
| |
| final int userCount = users.size(); |
| for (int i = 0; i < userCount; i++) { |
| final int userId = users.get(i).id; |
| |
| DatabaseHelper dbHelper = new DatabaseHelper(getContext(), userId); |
| SQLiteDatabase database = dbHelper.getWritableDatabase(); |
| migrateLegacySettingsForUserLocked(dbHelper, database, userId); |
| |
| // Upgrade to the latest version. |
| UpgradeController upgrader = new UpgradeController(userId); |
| upgrader.upgradeIfNeededLocked(); |
| |
| // Drop from memory if not a running user. |
| if (!mUserManager.isUserRunning(new UserHandle(userId))) { |
| removeUserStateLocked(userId, false); |
| } |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| } |
| |
| private void migrateLegacySettingsForUserIfNeededLocked(int userId) { |
| // Every user has secure settings and if no file we need to migrate. |
| final int secureKey = makeKey(SETTINGS_TYPE_SECURE, userId); |
| File secureFile = getSettingsFile(secureKey); |
| if (secureFile.exists()) { |
| return; |
| } |
| |
| DatabaseHelper dbHelper = new DatabaseHelper(getContext(), userId); |
| SQLiteDatabase database = dbHelper.getWritableDatabase(); |
| |
| migrateLegacySettingsForUserLocked(dbHelper, database, userId); |
| } |
| |
| private void migrateLegacySettingsForUserLocked(DatabaseHelper dbHelper, |
| SQLiteDatabase database, int userId) { |
| // Move over the system settings. |
| final int systemKey = makeKey(SETTINGS_TYPE_SYSTEM, userId); |
| ensureSettingsStateLocked(systemKey); |
| SettingsState systemSettings = mSettingsStates.get(systemKey); |
| migrateLegacySettingsLocked(systemSettings, database, TABLE_SYSTEM); |
| systemSettings.persistSyncLocked(); |
| |
| // Move over the secure settings. |
| // Do this after System settings, since this is the first thing we check when deciding |
| // to skip over migration from db to xml for a secondary user. |
| final int secureKey = makeKey(SETTINGS_TYPE_SECURE, userId); |
| ensureSettingsStateLocked(secureKey); |
| SettingsState secureSettings = mSettingsStates.get(secureKey); |
| migrateLegacySettingsLocked(secureSettings, database, TABLE_SECURE); |
| ensureSecureSettingAndroidIdSetLocked(secureSettings); |
| secureSettings.persistSyncLocked(); |
| |
| // Move over the global settings if owner. |
| // Do this last, since this is the first thing we check when deciding |
| // to skip over migration from db to xml for owner user. |
| if (userId == UserHandle.USER_SYSTEM) { |
| final int globalKey = makeKey(SETTINGS_TYPE_GLOBAL, userId); |
| ensureSettingsStateLocked(globalKey); |
| SettingsState globalSettings = mSettingsStates.get(globalKey); |
| migrateLegacySettingsLocked(globalSettings, database, TABLE_GLOBAL); |
| globalSettings.persistSyncLocked(); |
| } |
| |
| // Drop the database as now all is moved and persisted. |
| if (DROP_DATABASE_ON_MIGRATION) { |
| dbHelper.dropDatabase(); |
| } else { |
| dbHelper.backupDatabase(); |
| } |
| } |
| |
| private void migrateLegacySettingsLocked(SettingsState settingsState, |
| SQLiteDatabase database, String table) { |
| SQLiteQueryBuilder queryBuilder = new SQLiteQueryBuilder(); |
| queryBuilder.setTables(table); |
| |
| Cursor cursor = queryBuilder.query(database, ALL_COLUMNS, |
| null, null, null, null, null); |
| |
| if (cursor == null) { |
| return; |
| } |
| |
| try { |
| if (!cursor.moveToFirst()) { |
| return; |
| } |
| |
| final int nameColumnIdx = cursor.getColumnIndex(Settings.NameValueTable.NAME); |
| final int valueColumnIdx = cursor.getColumnIndex(Settings.NameValueTable.VALUE); |
| |
| settingsState.setVersionLocked(database.getVersion()); |
| |
| while (!cursor.isAfterLast()) { |
| String name = cursor.getString(nameColumnIdx); |
| String value = cursor.getString(valueColumnIdx); |
| settingsState.insertSettingLocked(name, value, |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| cursor.moveToNext(); |
| } |
| } finally { |
| cursor.close(); |
| } |
| } |
| |
| private void ensureSecureSettingAndroidIdSetLocked(SettingsState secureSettings) { |
| Setting value = secureSettings.getSettingLocked(Settings.Secure.ANDROID_ID); |
| |
| if (!value.isNull()) { |
| return; |
| } |
| |
| final int userId = getUserIdFromKey(secureSettings.mKey); |
| |
| final UserInfo user; |
| final long identity = Binder.clearCallingIdentity(); |
| try { |
| user = mUserManager.getUserInfo(userId); |
| } finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| if (user == null) { |
| // Can happen due to races when deleting users - treat as benign. |
| return; |
| } |
| |
| String androidId = Long.toHexString(new SecureRandom().nextLong()); |
| secureSettings.insertSettingLocked(Settings.Secure.ANDROID_ID, androidId, |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| |
| Slog.d(LOG_TAG, "Generated and saved new ANDROID_ID [" + androidId |
| + "] for user " + userId); |
| |
| // Write a drop box entry if it's a restricted profile |
| if (user.isRestricted()) { |
| DropBoxManager dbm = (DropBoxManager) getContext().getSystemService( |
| Context.DROPBOX_SERVICE); |
| if (dbm != null && dbm.isTagEnabled(DROPBOX_TAG_USERLOG)) { |
| dbm.addText(DROPBOX_TAG_USERLOG, System.currentTimeMillis() |
| + "," + DROPBOX_TAG_USERLOG + "," + androidId + "\n"); |
| } |
| } |
| } |
| |
| private void notifyForSettingsChange(int key, String name) { |
| final int userId = getUserIdFromKey(key); |
| Uri uri = getNotificationUriFor(key, name); |
| |
| mGenerationRegistry.incrementGeneration(key); |
| |
| mHandler.obtainMessage(MyHandler.MSG_NOTIFY_URI_CHANGED, |
| userId, 0, uri).sendToTarget(); |
| |
| if (isSecureSettingsKey(key)) { |
| maybeNotifyProfiles(getTypeFromKey(key), userId, uri, name, |
| sSecureCloneToManagedSettings); |
| } else if (isSystemSettingsKey(key)) { |
| maybeNotifyProfiles(getTypeFromKey(key), userId, uri, name, |
| sSystemCloneToManagedSettings); |
| } |
| |
| mHandler.obtainMessage(MyHandler.MSG_NOTIFY_DATA_CHANGED).sendToTarget(); |
| } |
| |
| private void maybeNotifyProfiles(int type, int userId, Uri uri, String name, |
| Set<String> keysCloned) { |
| if (keysCloned.contains(name)) { |
| for (int profileId : mUserManager.getProfileIdsWithDisabled(userId)) { |
| // the notification for userId has already been sent. |
| if (profileId != userId) { |
| mHandler.obtainMessage(MyHandler.MSG_NOTIFY_URI_CHANGED, |
| profileId, 0, uri).sendToTarget(); |
| final int key = makeKey(type, profileId); |
| mGenerationRegistry.incrementGeneration(key); |
| |
| mHandler.obtainMessage(MyHandler.MSG_NOTIFY_DATA_CHANGED).sendToTarget(); |
| } |
| } |
| } |
| } |
| |
| private boolean isGlobalSettingsKey(int key) { |
| return getTypeFromKey(key) == SETTINGS_TYPE_GLOBAL; |
| } |
| |
| private boolean isSystemSettingsKey(int key) { |
| return getTypeFromKey(key) == SETTINGS_TYPE_SYSTEM; |
| } |
| |
| private boolean isSecureSettingsKey(int key) { |
| return getTypeFromKey(key) == SETTINGS_TYPE_SECURE; |
| } |
| |
| private File getSettingsFile(int key) { |
| if (isGlobalSettingsKey(key)) { |
| final int userId = getUserIdFromKey(key); |
| return new File(Environment.getUserSystemDirectory(userId), |
| SETTINGS_FILE_GLOBAL); |
| } else if (isSystemSettingsKey(key)) { |
| final int userId = getUserIdFromKey(key); |
| return new File(Environment.getUserSystemDirectory(userId), |
| SETTINGS_FILE_SYSTEM); |
| } else if (isSecureSettingsKey(key)) { |
| final int userId = getUserIdFromKey(key); |
| return new File(Environment.getUserSystemDirectory(userId), |
| SETTINGS_FILE_SECURE); |
| } else { |
| throw new IllegalArgumentException("Invalid settings key:" + key); |
| } |
| } |
| |
| private Uri getNotificationUriFor(int key, String name) { |
| if (isGlobalSettingsKey(key)) { |
| return (name != null) ? Uri.withAppendedPath(Settings.Global.CONTENT_URI, name) |
| : Settings.Global.CONTENT_URI; |
| } else if (isSecureSettingsKey(key)) { |
| return (name != null) ? Uri.withAppendedPath(Settings.Secure.CONTENT_URI, name) |
| : Settings.Secure.CONTENT_URI; |
| } else if (isSystemSettingsKey(key)) { |
| return (name != null) ? Uri.withAppendedPath(Settings.System.CONTENT_URI, name) |
| : Settings.System.CONTENT_URI; |
| } else { |
| throw new IllegalArgumentException("Invalid settings key:" + key); |
| } |
| } |
| |
| private int getMaxBytesPerPackageForType(int type) { |
| switch (type) { |
| case SETTINGS_TYPE_GLOBAL: |
| case SETTINGS_TYPE_SECURE: { |
| return SettingsState.MAX_BYTES_PER_APP_PACKAGE_UNLIMITED; |
| } |
| |
| default: { |
| return SettingsState.MAX_BYTES_PER_APP_PACKAGE_LIMITED; |
| } |
| } |
| } |
| |
| private final class MyHandler extends Handler { |
| private static final int MSG_NOTIFY_URI_CHANGED = 1; |
| private static final int MSG_NOTIFY_DATA_CHANGED = 2; |
| |
| public MyHandler(Looper looper) { |
| super(looper); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_NOTIFY_URI_CHANGED: { |
| final int userId = msg.arg1; |
| Uri uri = (Uri) msg.obj; |
| getContext().getContentResolver().notifyChange(uri, null, true, userId); |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "Notifying for " + userId + ": " + uri); |
| } |
| } break; |
| |
| case MSG_NOTIFY_DATA_CHANGED: { |
| mBackupManager.dataChanged(); |
| } break; |
| } |
| } |
| } |
| |
| private final class UpgradeController { |
| private static final int SETTINGS_VERSION = 131; |
| |
| private final int mUserId; |
| |
| public UpgradeController(int userId) { |
| mUserId = userId; |
| } |
| |
| public void upgradeIfNeededLocked() { |
| // The version of all settings for a user is the same (all users have secure). |
| SettingsState secureSettings = getSettingsLocked( |
| SETTINGS_TYPE_SECURE, mUserId); |
| |
| // Try an update from the current state. |
| final int oldVersion = secureSettings.getVersionLocked(); |
| final int newVersion = SETTINGS_VERSION; |
| |
| // If up do date - done. |
| if (oldVersion == newVersion) { |
| return; |
| } |
| |
| // Try to upgrade. |
| final int curVersion = onUpgradeLocked(mUserId, oldVersion, newVersion); |
| |
| // If upgrade failed start from scratch and upgrade. |
| if (curVersion != newVersion) { |
| // Drop state we have for this user. |
| removeUserStateLocked(mUserId, true); |
| |
| // Recreate the database. |
| DatabaseHelper dbHelper = new DatabaseHelper(getContext(), mUserId); |
| SQLiteDatabase database = dbHelper.getWritableDatabase(); |
| dbHelper.recreateDatabase(database, newVersion, curVersion, oldVersion); |
| |
| // Migrate the settings for this user. |
| migrateLegacySettingsForUserLocked(dbHelper, database, mUserId); |
| |
| // Now upgrade should work fine. |
| onUpgradeLocked(mUserId, oldVersion, newVersion); |
| } |
| |
| // Set the global settings version if owner. |
| if (mUserId == UserHandle.USER_SYSTEM) { |
| SettingsState globalSettings = getSettingsLocked( |
| SETTINGS_TYPE_GLOBAL, mUserId); |
| globalSettings.setVersionLocked(newVersion); |
| } |
| |
| // Set the secure settings version. |
| secureSettings.setVersionLocked(newVersion); |
| |
| // Set the system settings version. |
| SettingsState systemSettings = getSettingsLocked( |
| SETTINGS_TYPE_SYSTEM, mUserId); |
| systemSettings.setVersionLocked(newVersion); |
| } |
| |
| private SettingsState getGlobalSettingsLocked() { |
| return getSettingsLocked(SETTINGS_TYPE_GLOBAL, UserHandle.USER_SYSTEM); |
| } |
| |
| private SettingsState getSecureSettingsLocked(int userId) { |
| return getSettingsLocked(SETTINGS_TYPE_SECURE, userId); |
| } |
| |
| private SettingsState getSystemSettingsLocked(int userId) { |
| return getSettingsLocked(SETTINGS_TYPE_SYSTEM, userId); |
| } |
| |
| /** |
| * You must perform all necessary mutations to bring the settings |
| * for this user from the old to the new version. When you add a new |
| * upgrade step you *must* update SETTINGS_VERSION. |
| * |
| * This is an example of moving a setting from secure to global. |
| * |
| * // v119: Example settings changes. |
| * if (currentVersion == 118) { |
| * if (userId == UserHandle.USER_OWNER) { |
| * // Remove from the secure settings. |
| * SettingsState secureSettings = getSecureSettingsLocked(userId); |
| * String name = "example_setting_to_move"; |
| * String value = secureSettings.getSetting(name); |
| * secureSettings.deleteSetting(name); |
| * |
| * // Add to the global settings. |
| * SettingsState globalSettings = getGlobalSettingsLocked(); |
| * globalSettings.insertSetting(name, value, SettingsState.SYSTEM_PACKAGE_NAME); |
| * } |
| * |
| * // Update the current version. |
| * currentVersion = 119; |
| * } |
| */ |
| private int onUpgradeLocked(int userId, int oldVersion, int newVersion) { |
| if (DEBUG) { |
| Slog.w(LOG_TAG, "Upgrading settings for user: " + userId + " from version: " |
| + oldVersion + " to version: " + newVersion); |
| } |
| |
| int currentVersion = oldVersion; |
| |
| // v119: Reset zen + ringer mode. |
| if (currentVersion == 118) { |
| if (userId == UserHandle.USER_SYSTEM) { |
| final SettingsState globalSettings = getGlobalSettingsLocked(); |
| globalSettings.updateSettingLocked(Settings.Global.ZEN_MODE, |
| Integer.toString(Settings.Global.ZEN_MODE_OFF), |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| globalSettings.updateSettingLocked(Settings.Global.MODE_RINGER, |
| Integer.toString(AudioManager.RINGER_MODE_NORMAL), |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| } |
| currentVersion = 119; |
| } |
| |
| // v120: Add double tap to wake setting. |
| if (currentVersion == 119) { |
| SettingsState secureSettings = getSecureSettingsLocked(userId); |
| secureSettings.insertSettingLocked(Settings.Secure.DOUBLE_TAP_TO_WAKE, |
| getContext().getResources().getBoolean( |
| R.bool.def_double_tap_to_wake) ? "1" : "0", |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| |
| currentVersion = 120; |
| } |
| |
| if (currentVersion == 120) { |
| // Before 121, we used a different string encoding logic. We just bump the |
| // version here; SettingsState knows how to handle pre-version 120 files. |
| currentVersion = 121; |
| } |
| |
| if (currentVersion == 121) { |
| // Version 122: allow OEMs to set a default payment component in resources. |
| // Note that we only write the default if no default has been set; |
| // if there is, we just leave the default at whatever it currently is. |
| final SettingsState secureSettings = getSecureSettingsLocked(userId); |
| String defaultComponent = (getContext().getResources().getString( |
| R.string.def_nfc_payment_component)); |
| Setting currentSetting = secureSettings.getSettingLocked( |
| Settings.Secure.NFC_PAYMENT_DEFAULT_COMPONENT); |
| if (defaultComponent != null && !defaultComponent.isEmpty() && |
| currentSetting.isNull()) { |
| secureSettings.insertSettingLocked( |
| Settings.Secure.NFC_PAYMENT_DEFAULT_COMPONENT, |
| defaultComponent, |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| } |
| currentVersion = 122; |
| } |
| |
| if (currentVersion == 122) { |
| // Version 123: Adding a default value for the ability to add a user from |
| // the lock screen. |
| if (userId == UserHandle.USER_SYSTEM) { |
| final SettingsState globalSettings = getGlobalSettingsLocked(); |
| Setting currentSetting = globalSettings.getSettingLocked( |
| Settings.Global.ADD_USERS_WHEN_LOCKED); |
| if (currentSetting.isNull()) { |
| globalSettings.insertSettingLocked( |
| Settings.Global.ADD_USERS_WHEN_LOCKED, |
| getContext().getResources().getBoolean( |
| R.bool.def_add_users_from_lockscreen) ? "1" : "0", |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| } |
| } |
| currentVersion = 123; |
| } |
| |
| if (currentVersion == 123) { |
| final SettingsState globalSettings = getGlobalSettingsLocked(); |
| String defaultDisabledProfiles = (getContext().getResources().getString( |
| R.string.def_bluetooth_disabled_profiles)); |
| globalSettings.insertSettingLocked(Settings.Global.BLUETOOTH_DISABLED_PROFILES, |
| defaultDisabledProfiles, SettingsState.SYSTEM_PACKAGE_NAME); |
| currentVersion = 124; |
| } |
| |
| if (currentVersion == 124) { |
| // Version 124: allow OEMs to set a default value for whether IME should be |
| // shown when a physical keyboard is connected. |
| final SettingsState secureSettings = getSecureSettingsLocked(userId); |
| Setting currentSetting = secureSettings.getSettingLocked( |
| Settings.Secure.SHOW_IME_WITH_HARD_KEYBOARD); |
| if (currentSetting.isNull()) { |
| secureSettings.insertSettingLocked( |
| Settings.Secure.SHOW_IME_WITH_HARD_KEYBOARD, |
| getContext().getResources().getBoolean( |
| R.bool.def_show_ime_with_hard_keyboard) ? "1" : "0", |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| } |
| currentVersion = 125; |
| } |
| |
| if (currentVersion == 125) { |
| // Version 125: Allow OEMs to set the default VR service. |
| final SettingsState secureSettings = getSecureSettingsLocked(userId); |
| |
| Setting currentSetting = secureSettings.getSettingLocked( |
| Settings.Secure.ENABLED_VR_LISTENERS); |
| if (currentSetting.isNull()) { |
| ArraySet<ComponentName> l = |
| SystemConfig.getInstance().getDefaultVrComponents(); |
| |
| if (l != null && !l.isEmpty()) { |
| StringBuilder b = new StringBuilder(); |
| boolean start = true; |
| for (ComponentName c : l) { |
| if (!start) { |
| b.append(':'); |
| } |
| b.append(c.flattenToString()); |
| start = false; |
| } |
| secureSettings.insertSettingLocked( |
| Settings.Secure.ENABLED_VR_LISTENERS, b.toString(), |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| } |
| |
| } |
| currentVersion = 126; |
| } |
| |
| if (currentVersion == 126) { |
| // Version 126: copy the primary values of LOCK_SCREEN_SHOW_NOTIFICATIONS and |
| // LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS into managed profile. |
| if (mUserManager.isManagedProfile(userId)) { |
| final SettingsState systemSecureSettings = |
| getSecureSettingsLocked(UserHandle.USER_SYSTEM); |
| |
| final Setting showNotifications = systemSecureSettings.getSettingLocked( |
| Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS); |
| if (!showNotifications.isNull()) { |
| final SettingsState secureSettings = getSecureSettingsLocked(userId); |
| secureSettings.insertSettingLocked( |
| Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS, |
| showNotifications.getValue(), |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| } |
| |
| final Setting allowPrivate = systemSecureSettings.getSettingLocked( |
| Settings.Secure.LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS); |
| if (!allowPrivate.isNull()) { |
| final SettingsState secureSettings = getSecureSettingsLocked(userId); |
| secureSettings.insertSettingLocked( |
| Settings.Secure.LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS, |
| allowPrivate.getValue(), |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| } |
| } |
| currentVersion = 127; |
| } |
| |
| if (currentVersion == 127) { |
| // version 127 is no longer used. |
| currentVersion = 128; |
| } |
| |
| if (currentVersion == 128) { |
| // Version 128: Allow OEMs to grant DND access to default apps. Note that |
| // the new apps are appended to the list of already approved apps. |
| final SettingsState systemSecureSettings = |
| getSecureSettingsLocked(userId); |
| |
| final Setting policyAccess = systemSecureSettings.getSettingLocked( |
| Settings.Secure.ENABLED_NOTIFICATION_POLICY_ACCESS_PACKAGES); |
| String defaultPolicyAccess = getContext().getResources().getString( |
| com.android.internal.R.string.config_defaultDndAccessPackages); |
| if (!TextUtils.isEmpty(defaultPolicyAccess)) { |
| if (policyAccess.isNull()) { |
| systemSecureSettings.insertSettingLocked( |
| Settings.Secure.ENABLED_NOTIFICATION_POLICY_ACCESS_PACKAGES, |
| defaultPolicyAccess, |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| } else { |
| StringBuilder currentSetting = |
| new StringBuilder(policyAccess.getValue()); |
| currentSetting.append(":"); |
| currentSetting.append(defaultPolicyAccess); |
| systemSecureSettings.updateSettingLocked( |
| Settings.Secure.ENABLED_NOTIFICATION_POLICY_ACCESS_PACKAGES, |
| currentSetting.toString(), |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| } |
| } |
| |
| currentVersion = 129; |
| } |
| |
| if (currentVersion == 129) { |
| // default longpress timeout changed from 500 to 400. If unchanged from the old |
| // default, update to the new default. |
| final SettingsState systemSecureSettings = |
| getSecureSettingsLocked(userId); |
| final String oldValue = systemSecureSettings.getSettingLocked( |
| Settings.Secure.LONG_PRESS_TIMEOUT).getValue(); |
| if (TextUtils.equals("500", oldValue)) { |
| systemSecureSettings.insertSettingLocked( |
| Settings.Secure.LONG_PRESS_TIMEOUT, |
| String.valueOf(getContext().getResources().getInteger( |
| R.integer.def_long_press_timeout_millis)), |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| } |
| currentVersion = 130; |
| } |
| |
| if (currentVersion == 130) { |
| // Initialize new multi-press timeout to default value |
| final SettingsState systemSecureSettings = getSecureSettingsLocked(userId); |
| final String oldValue = systemSecureSettings.getSettingLocked( |
| Settings.Secure.MULTI_PRESS_TIMEOUT).getValue(); |
| if (TextUtils.equals(null, oldValue)) { |
| systemSecureSettings.insertSettingLocked( |
| Settings.Secure.MULTI_PRESS_TIMEOUT, |
| String.valueOf(getContext().getResources().getInteger( |
| R.integer.def_multi_press_timeout_millis)), |
| SettingsState.SYSTEM_PACKAGE_NAME); |
| } |
| |
| currentVersion = 131; |
| } |
| |
| if (currentVersion != newVersion) { |
| Slog.w("SettingsProvider", "warning: upgrading settings database to version " |
| + newVersion + " left it at " |
| + currentVersion + " instead; this is probably a bug", new Throwable()); |
| if (DEBUG) { |
| throw new RuntimeException("db upgrade error"); |
| } |
| } |
| |
| // vXXX: Add new settings above this point. |
| |
| // Return the current version. |
| return currentVersion; |
| } |
| } |
| } |
| } |