content: /*
   * Copyright (C) 2015 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.server.pm;
  
  import android.annotation.NonNull;
  import android.annotation.Nullable;
  import android.app.ActivityManager;
  import android.app.AppGlobals;
  import android.app.admin.DevicePolicyManager;
  import android.content.ContentResolver;
  import android.content.Context;
  import android.content.Intent;
  import android.content.pm.ApplicationInfo;
  import android.content.pm.IPackageManager;
  import android.content.pm.PackageManager;
  import android.os.Binder;
  import android.os.Bundle;
  import android.os.Process;
  import android.os.RemoteException;
  import android.os.UserHandle;
  import android.os.UserManager;
  import android.os.UserManagerInternal;
  import android.provider.Settings;
  import android.provider.Settings.Global;
  import android.telephony.SubscriptionInfo;
  import android.telephony.SubscriptionManager;
  import android.util.Log;
  import android.util.Slog;
  import android.util.SparseArray;
  
  import com.android.internal.util.Preconditions;
  
  import com.google.android.collect.Sets;
  
  import org.xmlpull.v1.XmlPullParser;
  import org.xmlpull.v1.XmlSerializer;
  
  import java.io.IOException;
  import java.io.PrintWriter;
  import java.util.List;
  import java.util.Set;
  
  /**
   * Utility methods for user restrictions.
   *
   * <p>See {@link UserManagerService} for the method suffixes.
   */
  public class UserRestrictionsUtils {
      private static final String TAG = "UserRestrictionsUtils";
  
      private UserRestrictionsUtils() {
      }
  
      private static Set<String> newSetWithUniqueCheck(String[] strings) {
          final Set<String> ret = Sets.newArraySet(strings);
  
          // Make sure there's no overlap.
          Preconditions.checkState(ret.size() == strings.length);
          return ret;
      }
  
      public static final Set<String> USER_RESTRICTIONS = newSetWithUniqueCheck(new String[] {
              UserManager.DISALLOW_CONFIG_WIFI,
              UserManager.DISALLOW_CONFIG_LOCALE,
              UserManager.DISALLOW_MODIFY_ACCOUNTS,
              UserManager.DISALLOW_INSTALL_APPS,
              UserManager.DISALLOW_UNINSTALL_APPS,
              UserManager.DISALLOW_SHARE_LOCATION,
              UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES,
              UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES_GLOBALLY,
              UserManager.DISALLOW_CONFIG_BLUETOOTH,
              UserManager.DISALLOW_BLUETOOTH,
              UserManager.DISALLOW_BLUETOOTH_SHARING,
              UserManager.DISALLOW_USB_FILE_TRANSFER,
              UserManager.DISALLOW_CONFIG_CREDENTIALS,
              UserManager.DISALLOW_REMOVE_USER,
              UserManager.DISALLOW_REMOVE_MANAGED_PROFILE,
              UserManager.DISALLOW_DEBUGGING_FEATURES,
              UserManager.DISALLOW_CONFIG_VPN,
              UserManager.DISALLOW_CONFIG_DATE_TIME,
              UserManager.DISALLOW_CONFIG_TETHERING,
              UserManager.DISALLOW_NETWORK_RESET,
              UserManager.DISALLOW_FACTORY_RESET,
              UserManager.DISALLOW_ADD_USER,
              UserManager.DISALLOW_ADD_MANAGED_PROFILE,
              UserManager.ENSURE_VERIFY_APPS,
              UserManager.DISALLOW_CONFIG_CELL_BROADCASTS,
              UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS,
              UserManager.DISALLOW_APPS_CONTROL,
              UserManager.DISALLOW_MOUNT_PHYSICAL_MEDIA,
              UserManager.DISALLOW_UNMUTE_MICROPHONE,
              UserManager.DISALLOW_ADJUST_VOLUME,
              UserManager.DISALLOW_OUTGOING_CALLS,
              UserManager.DISALLOW_SMS,
              UserManager.DISALLOW_FUN,
              UserManager.DISALLOW_CREATE_WINDOWS,
              UserManager.DISALLOW_SYSTEM_ERROR_DIALOGS,
              UserManager.DISALLOW_CROSS_PROFILE_COPY_PASTE,
              UserManager.DISALLOW_OUTGOING_BEAM,
              UserManager.DISALLOW_WALLPAPER,
              UserManager.DISALLOW_SAFE_BOOT,
              UserManager.ALLOW_PARENT_PROFILE_APP_LINKING,
              UserManager.DISALLOW_RECORD_AUDIO,
              UserManager.DISALLOW_CAMERA,
              UserManager.DISALLOW_RUN_IN_BACKGROUND,
              UserManager.DISALLOW_DATA_ROAMING,
              UserManager.DISALLOW_SET_USER_ICON,
              UserManager.DISALLOW_SET_WALLPAPER,
              UserManager.DISALLOW_OEM_UNLOCK,
              UserManager.DISALLOW_UNMUTE_DEVICE,
              UserManager.DISALLOW_AUTOFILL,
              UserManager.DISALLOW_CONTENT_CAPTURE,
              UserManager.DISALLOW_CONTENT_SUGGESTIONS,
              UserManager.DISALLOW_USER_SWITCH,
              UserManager.DISALLOW_UNIFIED_PASSWORD,
              UserManager.DISALLOW_CONFIG_LOCATION,
              UserManager.DISALLOW_AIRPLANE_MODE,
              UserManager.DISALLOW_CONFIG_BRIGHTNESS,
              UserManager.DISALLOW_SHARE_INTO_MANAGED_PROFILE,
              UserManager.DISALLOW_AMBIENT_DISPLAY,
              UserManager.DISALLOW_CONFIG_SCREEN_TIMEOUT,
              UserManager.DISALLOW_PRINTING,
              UserManager.DISALLOW_CONFIG_PRIVATE_DNS
      });
  
      /**
       * Set of user restriction which we don't want to persist.
       */
      private static final Set<String> NON_PERSIST_USER_RESTRICTIONS = Sets.newArraySet(
              UserManager.DISALLOW_RECORD_AUDIO
      );
  
      /**
       * User restrictions that cannot be set by profile owners of secondary users. When set by DO
       * they will be applied to all users.
       */
      private static final Set<String> PRIMARY_USER_ONLY_RESTRICTIONS = Sets.newArraySet(
              UserManager.DISALLOW_BLUETOOTH,
              UserManager.DISALLOW_USB_FILE_TRANSFER,
              UserManager.DISALLOW_CONFIG_TETHERING,
              UserManager.DISALLOW_NETWORK_RESET,
              UserManager.DISALLOW_FACTORY_RESET,
              UserManager.DISALLOW_ADD_USER,
              UserManager.DISALLOW_CONFIG_CELL_BROADCASTS,
              UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS,
              UserManager.DISALLOW_MOUNT_PHYSICAL_MEDIA,
              UserManager.DISALLOW_SMS,
              UserManager.DISALLOW_FUN,
              UserManager.DISALLOW_SAFE_BOOT,
              UserManager.DISALLOW_CREATE_WINDOWS,
              UserManager.DISALLOW_DATA_ROAMING,
              UserManager.DISALLOW_AIRPLANE_MODE
      );
  
      /**
       * User restrictions that cannot be set by profile owners. Applied to all users.
       */
      private static final Set<String> DEVICE_OWNER_ONLY_RESTRICTIONS = Sets.newArraySet(
              UserManager.DISALLOW_USER_SWITCH,
              UserManager.DISALLOW_CONFIG_PRIVATE_DNS
      );
  
      /**
       * User restrictions that can't be changed by device owner or profile owner.
       */
      private static final Set<String> IMMUTABLE_BY_OWNERS = Sets.newArraySet(
              UserManager.DISALLOW_RECORD_AUDIO,
              UserManager.DISALLOW_WALLPAPER,
              UserManager.DISALLOW_OEM_UNLOCK
      );
  
      /**
       * Special user restrictions that can be applied to a user as well as to all users globally,
       * depending on callers.  When device owner sets them, they'll be applied to all users.
       */
      private static final Set<String> GLOBAL_RESTRICTIONS = Sets.newArraySet(
              UserManager.DISALLOW_ADJUST_VOLUME,
              UserManager.DISALLOW_BLUETOOTH_SHARING,
              UserManager.DISALLOW_CONFIG_DATE_TIME,
              UserManager.DISALLOW_SYSTEM_ERROR_DIALOGS,
              UserManager.DISALLOW_RUN_IN_BACKGROUND,
              UserManager.DISALLOW_UNMUTE_MICROPHONE,
              UserManager.DISALLOW_UNMUTE_DEVICE
      );
  
      /**
       * User restrictions that default to {@code true} for device owners.
       */
      private static final Set<String> DEFAULT_ENABLED_FOR_DEVICE_OWNERS = Sets.newArraySet(
              UserManager.DISALLOW_ADD_MANAGED_PROFILE
      );
  
      /**
       * User restrictions that default to {@code true} for managed profile owners.
       *
       * NB: {@link UserManager#DISALLOW_INSTALL_UNKNOWN_SOURCES} is also set by default but it is
       * not set to existing profile owners unless they used to have INSTALL_NON_MARKET_APPS disabled
       * in settings. So it is handled separately.
       */
      private static final Set<String> DEFAULT_ENABLED_FOR_MANAGED_PROFILES = Sets.newArraySet(
              UserManager.DISALLOW_BLUETOOTH_SHARING
      );
  
      /**
       * Special user restrictions that are always applied to all users no matter who sets them.
       */
      private static final Set<String> PROFILE_GLOBAL_RESTRICTIONS = Sets.newArraySet(
              UserManager.ENSURE_VERIFY_APPS,
              UserManager.DISALLOW_AIRPLANE_MODE,
              UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES_GLOBALLY
      );
  
      /**
       * Returns whether the given restriction name is valid (and logs it if it isn't).
       */
      public static boolean isValidRestriction(@NonNull String restriction) {
          if (!USER_RESTRICTIONS.contains(restriction)) {
              // Log this, with severity depending on the source.
              final int uid = Binder.getCallingUid();
              String[] pkgs = null;
              try {
                  pkgs = AppGlobals.getPackageManager().getPackagesForUid(uid);
              } catch (RemoteException e) {
                  // Ignore
              }
              StringBuilder msg = new StringBuilder("Unknown restriction queried by uid ");
              msg.append(uid);
              if (pkgs != null && pkgs.length > 0) {
                  msg.append(" (");
                  msg.append(pkgs[0]);
                  if (pkgs.length > 1) {
                      msg.append(" et al");
                  }
                  msg.append(")");
              }
              msg.append(": ");
              msg.append(restriction);
              if (restriction != null && isSystemApp(uid, pkgs)) {
                  Slog.wtf(TAG, msg.toString());
              } else {
                  Slog.e(TAG, msg.toString());
              }
              return false;
          }
          return true;
      }
  
      /** Returns whether the given uid (or corresponding packageList) is for a System app. */
      private static boolean isSystemApp(int uid, String[] packageList) {
          if (UserHandle.isCore(uid)) {
              return true;
          }
          if (packageList == null) {
              return false;
          }
          final IPackageManager pm = AppGlobals.getPackageManager();
          for (int i = 0; i < packageList.length; i++) {
              try {
                  final int flags = PackageManager.MATCH_UNINSTALLED_PACKAGES
                          | PackageManager.MATCH_DIRECT_BOOT_AWARE
                          | PackageManager.MATCH_DIRECT_BOOT_UNAWARE;
                  final ApplicationInfo appInfo =
                          pm.getApplicationInfo(packageList[i], flags, UserHandle.getUserId(uid));
                  if (appInfo != null && appInfo.isSystemApp()) {
                      return true;
                  }
              } catch (RemoteException e) {
                  // Ignore
              }
          }
          return false;
      }
  
      public static void writeRestrictions(@NonNull XmlSerializer serializer,
              @Nullable Bundle restrictions, @NonNull String tag) throws IOException {
          if (restrictions == null) {
              return;
          }
  
          serializer.startTag(null, tag);
          for (String key : restrictions.keySet()) {
              if (NON_PERSIST_USER_RESTRICTIONS.contains(key)) {
                  continue; // Don't persist.
              }
              if (USER_RESTRICTIONS.contains(key)) {
                  if (restrictions.getBoolean(key)) {
                      serializer.attribute(null, key, "true");
                  }
                  continue;
              }
              Log.w(TAG, "Unknown user restriction detected: " + key);
          }
          serializer.endTag(null, tag);
      }
  
      public static void readRestrictions(XmlPullParser parser, Bundle restrictions) {
          restrictions.clear();
          for (String key : USER_RESTRICTIONS) {
              final String value = parser.getAttributeValue(null, key);
              if (value != null) {
                  restrictions.putBoolean(key, Boolean.parseBoolean(value));
              }
          }
      }
  
      public static Bundle readRestrictions(XmlPullParser parser) {
          final Bundle result = new Bundle();
          readRestrictions(parser, result);
          return result;
      }
  
      /**
       * @return {@code in} itself when it's not null, or an empty bundle (which can writable).
       */
      public static Bundle nonNull(@Nullable Bundle in) {
          return in != null ? in : new Bundle();
      }
  
      public static boolean isEmpty(@Nullable Bundle in) {
          return (in == null) || (in.size() == 0);
      }
  
      /**
       * Returns {@code true} if given bundle is not null and contains {@code true} for a given
       * restriction.
       */
      public static boolean contains(@Nullable Bundle in, String restriction) {
          return in != null && in.getBoolean(restriction);
      }
  
      /**
       * Creates a copy of the {@code in} Bundle.  If {@code in} is null, it'll return an empty
       * bundle.
       *
       * <p>The resulting {@link Bundle} is always writable. (i.e. it won't return
       * {@link Bundle#EMPTY})
       */
      public static @NonNull Bundle clone(@Nullable Bundle in) {
          return (in != null) ? new Bundle(in) : new Bundle();
      }
  
      public static void merge(@NonNull Bundle dest, @Nullable Bundle in) {
          Preconditions.checkNotNull(dest);
          Preconditions.checkArgument(dest != in);
          if (in == null) {
              return;
          }
          for (String key : in.keySet()) {
              if (in.getBoolean(key, false)) {
                  dest.putBoolean(key, true);
              }
          }
      }
  
      /**
       * Merges a sparse array of restrictions bundles into one.
       */
      @Nullable
      public static Bundle mergeAll(SparseArray<Bundle> restrictions) {
          if (restrictions.size() == 0) {
              return null;
          } else {
              final Bundle result = new Bundle();
              for (int i = 0; i < restrictions.size(); i++) {
                  merge(result, restrictions.valueAt(i));
              }
              return result;
          }
      }
  
      /**
       * @return true if a restriction is settable by device owner.
       */
      public static boolean canDeviceOwnerChange(String restriction) {
          return !IMMUTABLE_BY_OWNERS.contains(restriction);
      }
  
      /**
       * @return true if a restriction is settable by profile owner.  Note it takes a user ID because
       * some restrictions can be changed by PO only when it's running on the system user.
       */
      public static boolean canProfileOwnerChange(String restriction, int userId) {
          return !IMMUTABLE_BY_OWNERS.contains(restriction)
                  && !DEVICE_OWNER_ONLY_RESTRICTIONS.contains(restriction)
                  && !(userId != UserHandle.USER_SYSTEM
                      && PRIMARY_USER_ONLY_RESTRICTIONS.contains(restriction));
      }
  
      /**
       * Returns the user restrictions that default to {@code true} for device owners.
       * These user restrictions are local, though. ie only for the device owner's user id.
       */
      public static @NonNull Set<String> getDefaultEnabledForDeviceOwner() {
          return DEFAULT_ENABLED_FOR_DEVICE_OWNERS;
      }
  
      /**
       * Returns the user restrictions that default to {@code true} for managed profile owners.
       */
      public static @NonNull Set<String> getDefaultEnabledForManagedProfiles() {
          return DEFAULT_ENABLED_FOR_MANAGED_PROFILES;
      }
  
      /**
       * Takes restrictions that can be set by device owner, and sort them into what should be applied
       * globally and what should be applied only on the current user.
       */
      public static void sortToGlobalAndLocal(@Nullable Bundle in, boolean isDeviceOwner,
              int cameraRestrictionScope,
              @NonNull Bundle global, @NonNull Bundle local) {
          // Camera restriction (as well as all others) goes to at most one bundle.
          if (cameraRestrictionScope == UserManagerInternal.CAMERA_DISABLED_GLOBALLY) {
              global.putBoolean(UserManager.DISALLOW_CAMERA, true);
          } else if (cameraRestrictionScope == UserManagerInternal.CAMERA_DISABLED_LOCALLY) {
              local.putBoolean(UserManager.DISALLOW_CAMERA, true);
          }
          if (in == null || in.size() == 0) {
              return;
          }
          for (String key : in.keySet()) {
              if (!in.getBoolean(key)) {
                  continue;
              }
              if (isGlobal(isDeviceOwner, key)) {
                  global.putBoolean(key, true);
              } else {
                  local.putBoolean(key, true);
              }
          }
      }
  
      /**
       * Whether given user restriction should be enforced globally.
       */
      private static boolean isGlobal(boolean isDeviceOwner, String key) {
          return (isDeviceOwner &&
                  (PRIMARY_USER_ONLY_RESTRICTIONS.contains(key) || GLOBAL_RESTRICTIONS.contains(key)))
                  || PROFILE_GLOBAL_RESTRICTIONS.contains(key)
                  || DEVICE_OWNER_ONLY_RESTRICTIONS.contains(key);
      }
  
      /**
       * @return true if two Bundles contain the same user restriction.
       * A null bundle and an empty bundle are considered to be equal.
       */
      public static boolean areEqual(@Nullable Bundle a, @Nullable Bundle b) {
          if (a == b) {
              return true;
          }
          if (isEmpty(a)) {
              return isEmpty(b);
          }
          if (isEmpty(b)) {
              return false;
          }
          for (String key : a.keySet()) {
              if (a.getBoolean(key) != b.getBoolean(key)) {
                  return false;
              }
          }
          for (String key : b.keySet()) {
              if (a.getBoolean(key) != b.getBoolean(key)) {
                  return false;
              }
          }
          return true;
      }
  
      /**
       * Takes a new use restriction set and the previous set, and apply the restrictions that have
       * changed.
       *
       * <p>Note this method is called by {@link UserManagerService} without holding any locks.
       */
      public static void applyUserRestrictions(Context context, int userId,
              Bundle newRestrictions, Bundle prevRestrictions) {
          for (String key : USER_RESTRICTIONS) {
              final boolean newValue = newRestrictions.getBoolean(key);
              final boolean prevValue = prevRestrictions.getBoolean(key);
  
              if (newValue != prevValue) {
                  applyUserRestriction(context, userId, key, newValue);
              }
          }
      }
  
      /**
       * Apply each user restriction.
       *
       * <p>See also {@link #isSettingRestrictedForUser()},
       * which should be in sync with this method.
       */
      private static void applyUserRestriction(Context context, int userId, String key,
              boolean newValue) {
          if (UserManagerService.DBG) {
              Log.d(TAG, "Applying user restriction: userId=" + userId
                      + " key=" + key + " value=" + newValue);
          }
          // When certain restrictions are cleared, we don't update the system settings,
          // because these settings are changeable on the Settings UI and we don't know the original
          // value -- for example LOCATION_MODE might have been off already when the restriction was
          // set, and in that case even if the restriction is lifted, changing it to ON would be
          // wrong.  So just don't do anything in such a case.  If the user hopes to enable location
          // later, they can do it on the Settings UI.
          // WARNING: Remember that Settings.Global and Settings.Secure are changeable via adb.
          // To prevent this from happening for a given user restriction, you have to add a check to
          // SettingsProvider.isGlobalOrSecureSettingRestrictedForUser.
  
          final ContentResolver cr = context.getContentResolver();
          final long id = Binder.clearCallingIdentity();
          try {
              switch (key) {
                  case UserManager.DISALLOW_DATA_ROAMING:
                      if (newValue) {
                          // DISALLOW_DATA_ROAMING user restriction is set.
  
                          // Multi sim device.
                          SubscriptionManager subscriptionManager = context
                                  .getSystemService(SubscriptionManager.class);
                          final List<SubscriptionInfo> subscriptionInfoList =
                              subscriptionManager.getActiveSubscriptionInfoList();
                          if (subscriptionInfoList != null) {
                              for (SubscriptionInfo subInfo : subscriptionInfoList) {
                                  android.provider.Settings.Global.putStringForUser(cr,
                                      android.provider.Settings.Global.DATA_ROAMING
                                      + subInfo.getSubscriptionId(), "0", userId);
                              }
                          }
  
                          // Single sim device.
                          android.provider.Settings.Global.putStringForUser(cr,
                              android.provider.Settings.Global.DATA_ROAMING, "0", userId);
                      }
                      break;
                  case UserManager.DISALLOW_SHARE_LOCATION:
                      if (newValue) {
                          android.provider.Settings.Secure.putIntForUser(cr,
                                  android.provider.Settings.Secure.LOCATION_MODE,
                                  android.provider.Settings.Secure.LOCATION_MODE_OFF,
                                  userId);
                      }
                      break;
                  case UserManager.DISALLOW_DEBUGGING_FEATURES:
                      if (newValue) {
                          // Only disable adb if changing for system user, since it is global
                          // TODO: should this be admin user?
                          if (userId == UserHandle.USER_SYSTEM) {
                              android.provider.Settings.Global.putStringForUser(cr,
                                      android.provider.Settings.Global.ADB_ENABLED, "0",
                                      userId);
                          }
                      }
                      break;
                  case UserManager.ENSURE_VERIFY_APPS:
                      if (newValue) {
                          android.provider.Settings.Global.putStringForUser(
                                  context.getContentResolver(),
                                  android.provider.Settings.Global.PACKAGE_VERIFIER_ENABLE, "1",
                                  userId);
                          android.provider.Settings.Global.putStringForUser(
                                  context.getContentResolver(),
                                  android.provider.Settings.Global.PACKAGE_VERIFIER_INCLUDE_ADB, "1",
                                  userId);
                      }
                      break;
                  case UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES_GLOBALLY:
                      setInstallMarketAppsRestriction(cr, userId, getNewUserRestrictionSetting(
                              context, userId, UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES,
                              newValue));
                      break;
                  case UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES:
                      // Since Android O, the secure setting is not available to be changed by the
                      // user. Hence, when the restriction is cleared, we need to reset the state of
                      // the setting to its default value which is now 1.
                      setInstallMarketAppsRestriction(cr, userId, getNewUserRestrictionSetting(
                              context, userId, UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES_GLOBALLY,
                              newValue));
                      break;
                  case UserManager.DISALLOW_RUN_IN_BACKGROUND:
                      if (newValue) {
                          int currentUser = ActivityManager.getCurrentUser();
                          if (currentUser != userId && userId != UserHandle.USER_SYSTEM) {
                              try {
                                  ActivityManager.getService().stopUser(userId, false, null);
                              } catch (RemoteException e) {
                                  throw e.rethrowAsRuntimeException();
                              }
                          }
                      }
                      break;
                  case UserManager.DISALLOW_SAFE_BOOT:
                      // Unlike with the other restrictions, we want to propagate the new value to
                      // the system settings even if it is false. The other restrictions modify
                      // settings which could be manually changed by the user from the Settings app
                      // after the policies enforcing these restrictions have been revoked, so we
                      // leave re-setting of those settings to the user.
                      android.provider.Settings.Global.putInt(
                              context.getContentResolver(),
                              android.provider.Settings.Global.SAFE_BOOT_DISALLOWED,
                              newValue ? 1 : 0);
                      break;
                  case UserManager.DISALLOW_AIRPLANE_MODE:
                      if (newValue) {
                          final boolean airplaneMode = Settings.Global.getInt(
                                  context.getContentResolver(),
                                  Settings.Global.AIRPLANE_MODE_ON, 0) == 1;
                          if (airplaneMode) {
                              android.provider.Settings.Global.putInt(
                                      context.getContentResolver(),
                                      android.provider.Settings.Global.AIRPLANE_MODE_ON, 0);
                              // Post the intent.
                              Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
                              intent.putExtra("state", false);
                              context.sendBroadcastAsUser(intent, UserHandle.ALL);
                          }
                      }
                      break;
                  case UserManager.DISALLOW_AMBIENT_DISPLAY:
                      if (newValue) {
                          android.provider.Settings.Secure.putIntForUser(
                                  context.getContentResolver(),
                                  Settings.Secure.DOZE_ENABLED, 0, userId);
                          android.provider.Settings.Secure.putIntForUser(
                                  context.getContentResolver(),
                                  Settings.Secure.DOZE_ALWAYS_ON, 0, userId);
                          android.provider.Settings.Secure.putIntForUser(
                                  context.getContentResolver(),
                                  Settings.Secure.DOZE_PICK_UP_GESTURE, 0, userId);
                          android.provider.Settings.Secure.putIntForUser(
                                  context.getContentResolver(),
                                  Settings.Secure.DOZE_PULSE_ON_LONG_PRESS, 0, userId);
                          android.provider.Settings.Secure.putIntForUser(
                                  context.getContentResolver(),
                                  Settings.Secure.DOZE_DOUBLE_TAP_GESTURE, 0, userId);
                      }
                      break;
                  case UserManager.DISALLOW_CONFIG_LOCATION:
                      // When DISALLOW_CONFIG_LOCATION is set on any user, we undo the global
                      // kill switch.
                      if (newValue) {
                          android.provider.Settings.Global.putString(
                                  context.getContentResolver(),
                                  Global.LOCATION_GLOBAL_KILL_SWITCH, "0");
                      }
                      break;
              }
          } finally {
              Binder.restoreCallingIdentity(id);
          }
      }
  
      public static boolean isSettingRestrictedForUser(Context context, @NonNull String setting,
              int userId, String value, int callingUid) {
          Preconditions.checkNotNull(setting);
          final UserManager mUserManager = context.getSystemService(UserManager.class);
          String restriction;
          boolean checkAllUser = false;
          switch (setting) {
              case android.provider.Settings.Secure.LOCATION_MODE:
                  if (mUserManager.hasUserRestriction(
                          UserManager.DISALLOW_CONFIG_LOCATION, UserHandle.of(userId))
                          && callingUid != Process.SYSTEM_UID) {
                      return true;
                  } else if (String.valueOf(Settings.Secure.LOCATION_MODE_OFF).equals(value)) {
                      return false;
                  }
                  restriction = UserManager.DISALLOW_SHARE_LOCATION;
                  break;
  
              case android.provider.Settings.Secure.LOCATION_PROVIDERS_ALLOWED:
                  if (mUserManager.hasUserRestriction(
                          UserManager.DISALLOW_CONFIG_LOCATION, UserHandle.of(userId))
                          && callingUid != Process.SYSTEM_UID) {
                      return true;
                  } else if (value != null && value.startsWith("-")) {
                      // See SettingsProvider.updateLocationProvidersAllowedLocked.  "-" is to disable
                      // a provider, which should be allowed even if the user restriction is set.
                      return false;
                  }
                  restriction = UserManager.DISALLOW_SHARE_LOCATION;
                  break;
  
              case android.provider.Settings.Secure.INSTALL_NON_MARKET_APPS:
                  if ("0".equals(value)) {
                      return false;
                  }
                  restriction = UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES;
                  break;
  
              case android.provider.Settings.Global.ADB_ENABLED:
                  if ("0".equals(value)) {
                      return false;
                  }
                  restriction = UserManager.DISALLOW_DEBUGGING_FEATURES;
                  break;
  
              case android.provider.Settings.Global.PACKAGE_VERIFIER_ENABLE:
              case android.provider.Settings.Global.PACKAGE_VERIFIER_INCLUDE_ADB:
                  if ("1".equals(value)) {
                      return false;
                  }
                  restriction = UserManager.ENSURE_VERIFY_APPS;
                  break;
  
              case android.provider.Settings.Global.PREFERRED_NETWORK_MODE:
                  restriction = UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS;
                  break;
  
              case android.provider.Settings.Secure.ALWAYS_ON_VPN_APP:
              case android.provider.Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN:
              case android.provider.Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN_WHITELIST:
                  // Whitelist system uid (ConnectivityService) and root uid to change always-on vpn
                  final int appId = UserHandle.getAppId(callingUid);
                  if (appId == Process.SYSTEM_UID || appId == Process.ROOT_UID) {
                      return false;
                  }
                  restriction = UserManager.DISALLOW_CONFIG_VPN;
                  break;
  
              case android.provider.Settings.Global.SAFE_BOOT_DISALLOWED:
                  if ("1".equals(value)) {
                      return false;
                  }
                  restriction = UserManager.DISALLOW_SAFE_BOOT;
                  break;
  
              case android.provider.Settings.Global.AIRPLANE_MODE_ON:
                  if ("0".equals(value)) {
                      return false;
                  }
                  restriction = UserManager.DISALLOW_AIRPLANE_MODE;
                  break;
  
              case android.provider.Settings.Secure.DOZE_ENABLED:
              case android.provider.Settings.Secure.DOZE_ALWAYS_ON:
              case android.provider.Settings.Secure.DOZE_PICK_UP_GESTURE:
              case android.provider.Settings.Secure.DOZE_PULSE_ON_LONG_PRESS:
              case android.provider.Settings.Secure.DOZE_DOUBLE_TAP_GESTURE:
                  if ("0".equals(value)) {
                      return false;
                  }
                  restriction = UserManager.DISALLOW_AMBIENT_DISPLAY;
                  break;
  
              case android.provider.Settings.Global.LOCATION_GLOBAL_KILL_SWITCH:
                  if ("0".equals(value)) {
                      return false;
                  }
                  restriction = UserManager.DISALLOW_CONFIG_LOCATION;
                  checkAllUser = true;
                  break;
  
              case android.provider.Settings.System.SCREEN_BRIGHTNESS:
              case android.provider.Settings.System.SCREEN_BRIGHTNESS_MODE:
                  if (callingUid == Process.SYSTEM_UID) {
                      return false;
                  }
                  restriction = UserManager.DISALLOW_CONFIG_BRIGHTNESS;
                  break;
  
              case android.provider.Settings.Global.AUTO_TIME:
                  DevicePolicyManager dpm = context.getSystemService(DevicePolicyManager.class);
                  if (dpm != null && dpm.getAutoTimeRequired()
                          && "0".equals(value)) {
                      return true;
                  } else if (callingUid == Process.SYSTEM_UID) {
                      return false;
                  }
                  restriction = UserManager.DISALLOW_CONFIG_DATE_TIME;
                  break;
  
              case android.provider.Settings.Global.AUTO_TIME_ZONE:
                  if (callingUid == Process.SYSTEM_UID) {
                      return false;
                  }
                  restriction = UserManager.DISALLOW_CONFIG_DATE_TIME;
                  break;
  
              case android.provider.Settings.System.SCREEN_OFF_TIMEOUT:
                  if (callingUid == Process.SYSTEM_UID) {
                      return false;
                  }
                  restriction = UserManager.DISALLOW_CONFIG_SCREEN_TIMEOUT;
                  break;
  
              case android.provider.Settings.Global.PRIVATE_DNS_MODE:
              case android.provider.Settings.Global.PRIVATE_DNS_SPECIFIER:
                  if (callingUid == Process.SYSTEM_UID) {
                      return false;
                  }
                  restriction = UserManager.DISALLOW_CONFIG_PRIVATE_DNS;
                  break;
              default:
                  if (setting.startsWith(Settings.Global.DATA_ROAMING)) {
                      if ("0".equals(value)) {
                          return false;
                      }
                      restriction = UserManager.DISALLOW_DATA_ROAMING;
                      break;
                  }
                  return false;
          }
  
          if (checkAllUser) {
              return mUserManager.hasUserRestrictionOnAnyUser(restriction);
          } else {
              return mUserManager.hasUserRestriction(restriction, UserHandle.of(userId));
          }
      }
  
      public static void dumpRestrictions(PrintWriter pw, String prefix, Bundle restrictions) {
          boolean noneSet = true;
          if (restrictions != null) {
              for (String key : restrictions.keySet()) {
                  if (restrictions.getBoolean(key, false)) {
                      pw.println(prefix + key);
                      noneSet = false;
                  }
              }
              if (noneSet) {
                  pw.println(prefix + "none");
              }
          } else {
              pw.println(prefix + "null");
          }
      }
  
      /**
       * Moves a particular restriction from one array of bundles to another, e.g. for all users.
       */
      public static void moveRestriction(String restrictionKey, SparseArray<Bundle> srcRestrictions,
              SparseArray<Bundle> destRestrictions) {
          for (int i = 0; i < srcRestrictions.size(); i++) {
              final int key = srcRestrictions.keyAt(i);
              final Bundle from = srcRestrictions.valueAt(i);
              if (contains(from, restrictionKey)) {
                  from.remove(restrictionKey);
                  Bundle to = destRestrictions.get(key);
                  if (to == null) {
                      to = new Bundle();
                      destRestrictions.append(key, to);
                  }
                  to.putBoolean(restrictionKey, true);
                  // Don't keep empty bundles.
                  if (from.isEmpty()) {
                      srcRestrictions.removeAt(i);
                      i--;
                  }
              }
          }
      }
  
      /**
       * Returns whether restrictions differ between two bundles.
       * @param oldRestrictions old bundle of restrictions.
       * @param newRestrictions new bundle of restrictions
       * @param restrictions restrictions of interest, if empty, all restrictions are checked.
       */
      public static boolean restrictionsChanged(Bundle oldRestrictions, Bundle newRestrictions,
              String... restrictions) {
          if (restrictions.length == 0) {
              return areEqual(oldRestrictions, newRestrictions);
          }
          for (final String restriction : restrictions) {
              if (oldRestrictions.getBoolean(restriction, false) !=
                      newRestrictions.getBoolean(restriction, false)) {
                  return true;
              }
          }
          return false;
      }
  
      private static void setInstallMarketAppsRestriction(ContentResolver cr, int userId,
              int settingValue) {
          android.provider.Settings.Secure.putIntForUser(
                  cr, android.provider.Settings.Secure.INSTALL_NON_MARKET_APPS, settingValue, userId);
      }
  
      private static int getNewUserRestrictionSetting(Context context, int userId,
                  String userRestriction, boolean newValue) {
          return (newValue || UserManager.get(context).hasUserRestriction(userRestriction,
                  UserHandle.of(userId))) ? 0 : 1;
      }
  }
  