| /* |
| * Copyright (C) 2018 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.backup; |
| |
| import static com.android.internal.util.Preconditions.checkNotNull; |
| |
| import android.Manifest; |
| import android.annotation.Nullable; |
| import android.annotation.UserIdInt; |
| import android.app.ActivityManager; |
| import android.app.backup.BackupManager; |
| import android.app.backup.IBackupManagerMonitor; |
| import android.app.backup.IBackupObserver; |
| import android.app.backup.IFullBackupRestoreObserver; |
| import android.app.backup.IRestoreSession; |
| import android.app.backup.ISelectBackupTransportCallback; |
| import android.app.job.JobParameters; |
| import android.app.job.JobScheduler; |
| import android.app.job.JobService; |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.PackageManager; |
| import android.os.Binder; |
| import android.os.FileUtils; |
| import android.os.HandlerThread; |
| import android.os.IBinder; |
| import android.os.ParcelFileDescriptor; |
| import android.os.Trace; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.util.Slog; |
| import android.util.SparseArray; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.util.DumpUtils; |
| import com.android.server.SystemConfig; |
| import com.android.server.SystemService; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| import java.util.Collections; |
| import java.util.Set; |
| |
| /** |
| * Definition of the system service that performs backup/restore operations. |
| * |
| * <p>This class is responsible for handling user-aware operations and acts as a delegator, routing |
| * incoming calls to the appropriate per-user {@link UserBackupManagerService} to handle the |
| * corresponding backup/restore operation. |
| */ |
| public class BackupManagerService { |
| public static final String TAG = "BackupManagerService"; |
| public static final boolean DEBUG = true; |
| public static final boolean MORE_DEBUG = false; |
| public static final boolean DEBUG_SCHEDULING = true; |
| |
| @VisibleForTesting |
| static final String DUMP_RUNNING_USERS_MESSAGE = "Backup Manager is running for users:"; |
| |
| // The published binder is a singleton Trampoline object that calls through to the proper code. |
| // This indirection lets us turn down the heavy implementation object on the fly without |
| // disturbing binders that have been cached elsewhere in the system. |
| private static Trampoline sInstance; |
| |
| static Trampoline getInstance() { |
| // Always constructed during system bring up, so no need to lazy-init. |
| return sInstance; |
| } |
| |
| private final Context mContext; |
| private final Trampoline mTrampoline; |
| private final HandlerThread mBackupThread; |
| |
| // Keeps track of all unlocked users registered with this service. Indexed by user id. |
| private final SparseArray<UserBackupManagerService> mServiceUsers = new SparseArray<>(); |
| |
| private Set<ComponentName> mTransportWhitelist; |
| |
| private final BroadcastReceiver mUserRemovedReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (Intent.ACTION_USER_REMOVED.equals(intent.getAction())) { |
| int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); |
| if (userId > 0) { // for only non system users |
| onRemovedNonSystemUser(userId); |
| } |
| } |
| } |
| }; |
| |
| /** Instantiate a new instance of {@link BackupManagerService}. */ |
| public BackupManagerService( |
| Context context, Trampoline trampoline, HandlerThread backupThread) { |
| mContext = checkNotNull(context); |
| mTrampoline = checkNotNull(trampoline); |
| mBackupThread = checkNotNull(backupThread); |
| |
| // Set up our transport options. |
| SystemConfig systemConfig = SystemConfig.getInstance(); |
| mTransportWhitelist = systemConfig.getBackupTransportWhitelist(); |
| if (mTransportWhitelist == null) { |
| mTransportWhitelist = Collections.emptySet(); |
| } |
| |
| mContext.registerReceiver(mUserRemovedReceiver, |
| new IntentFilter(Intent.ACTION_USER_REMOVED)); |
| } |
| |
| /** |
| * Remove backup state for non system {@code userId} when the user is removed from the device. |
| * For non system users, backup state is stored in both the user's own dir and the system dir. |
| * When the user is removed, the user's own dir gets removed by the OS. This method ensures that |
| * the part of the user backup state which is in the system dir also gets removed. |
| */ |
| private void onRemovedNonSystemUser(int userId) { |
| Slog.i(TAG, "Removing state for non system user " + userId); |
| File dir = UserBackupManagerFiles.getStateDirInSystemDir(userId); |
| if (!FileUtils.deleteContentsAndDir(dir)) { |
| Slog.w(TAG, "Failed to delete state dir for removed user: " + userId); |
| } |
| } |
| |
| /** |
| * If {@code userId} is different from the calling user id, then the caller must hold the |
| * android.permission.INTERACT_ACROSS_USERS_FULL permission. |
| * |
| * @param userId User id on which the backup operation is being requested. |
| * @param message A message to include in the exception if it is thrown. |
| */ |
| private void enforceCallingPermissionOnUserId(@UserIdInt int userId, String message) { |
| if (Binder.getCallingUserHandle().getIdentifier() != userId) { |
| mContext.enforceCallingOrSelfPermission( |
| Manifest.permission.INTERACT_ACROSS_USERS_FULL, message); |
| } |
| } |
| |
| // --------------------------------------------- |
| // USER LIFECYCLE CALLBACKS |
| // --------------------------------------------- |
| |
| /** |
| * Starts the backup service for user {@code userId} by creating a new instance of {@link |
| * UserBackupManagerService} and registering it with this service. |
| */ |
| @VisibleForTesting |
| protected void startServiceForUser(int userId) { |
| if (mServiceUsers.get(userId) != null) { |
| Slog.i(TAG, "userId " + userId + " already started, so not starting again"); |
| return; |
| } |
| |
| UserBackupManagerService userBackupManagerService = |
| UserBackupManagerService.createAndInitializeService( |
| userId, mContext, mTrampoline, mTransportWhitelist); |
| startServiceForUser(userId, userBackupManagerService); |
| } |
| |
| /** |
| * Starts the backup service for user {@code userId} by registering its instance of {@link |
| * UserBackupManagerService} with this service and setting enabled state. |
| */ |
| void startServiceForUser(int userId, UserBackupManagerService userBackupManagerService) { |
| mServiceUsers.put(userId, userBackupManagerService); |
| |
| Trace.traceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "backup enable"); |
| userBackupManagerService.initializeBackupEnableState(); |
| Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER); |
| } |
| |
| /** Stops the backup service for user {@code userId} when the user is stopped. */ |
| @VisibleForTesting |
| protected void stopServiceForUser(int userId) { |
| UserBackupManagerService userBackupManagerService = mServiceUsers.removeReturnOld(userId); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.tearDownService(); |
| |
| KeyValueBackupJob.cancel(userId, mContext); |
| FullBackupJob.cancel(userId, mContext); |
| } |
| } |
| |
| /** |
| * Returns a lst of users currently unlocked that have a |
| * {@link UserBackupManagerService} registered. |
| */ |
| @VisibleForTesting |
| public SparseArray<UserBackupManagerService> getServiceUsers() { |
| return mServiceUsers; |
| } |
| |
| /** |
| * Returns the {@link UserBackupManagerService} instance for the specified user {@code userId}. |
| * If the user is not registered with the service (either the user is locked or not eligible for |
| * the backup service) then return {@code null}. |
| * |
| * @param userId The id of the user to retrieve its instance of {@link |
| * UserBackupManagerService}. |
| * @param caller A {@link String} identifying the caller for logging purposes. |
| * @throws SecurityException if {@code userId} is different from the calling user id and the |
| * caller does NOT have the android.permission.INTERACT_ACROSS_USERS_FULL permission. |
| */ |
| @Nullable |
| @VisibleForTesting |
| UserBackupManagerService getServiceForUserIfCallerHasPermission( |
| @UserIdInt int userId, String caller) { |
| enforceCallingPermissionOnUserId(userId, caller); |
| UserBackupManagerService userBackupManagerService = mServiceUsers.get(userId); |
| if (userBackupManagerService == null) { |
| Slog.w(TAG, "Called " + caller + " for unknown user: " + userId); |
| } |
| return userBackupManagerService; |
| } |
| |
| /* |
| * The following methods are implementations of IBackupManager methods called from Trampoline. |
| * They delegate to the appropriate per-user instance of UserBackupManagerService to perform the |
| * action on the passed in user. Currently this is a straight redirection (see TODO). |
| */ |
| // TODO (b/118520567): Stop hardcoding system user when we pass in user id as a parameter |
| |
| // --------------------------------------------- |
| // BACKUP AGENT OPERATIONS |
| // --------------------------------------------- |
| |
| /** |
| * An app's backup agent calls this method to let the service know that there's new data to |
| * backup for their app {@code packageName}. Only used for apps participating in key-value |
| * backup. |
| */ |
| public void dataChanged(@UserIdInt int userId, String packageName) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "dataChanged()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.dataChanged(packageName); |
| } |
| } |
| |
| /** |
| * Callback: a requested backup agent has been instantiated. This should only be called from the |
| * {@link ActivityManager}. |
| */ |
| public void agentConnected(@UserIdInt int userId, String packageName, IBinder agentBinder) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "agentConnected()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.agentConnected(packageName, agentBinder); |
| } |
| } |
| |
| /** |
| * Callback: a backup agent has failed to come up, or has unexpectedly quit. This should only be |
| * called from the {@link ActivityManager}. |
| */ |
| public void agentDisconnected(@UserIdInt int userId, String packageName) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "agentDisconnected()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.agentDisconnected(packageName); |
| } |
| } |
| |
| /** |
| * Used by a currently-active backup agent to notify the service that it has completed its given |
| * outstanding asynchronous backup/restore operation. |
| */ |
| public void opComplete(@UserIdInt int userId, int token, long result) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "opComplete()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.opComplete(token, result); |
| } |
| } |
| |
| // --------------------------------------------- |
| // TRANSPORT OPERATIONS |
| // --------------------------------------------- |
| |
| /** Run an initialize operation for the given transports {@code transportNames}. */ |
| public void initializeTransports( |
| @UserIdInt int userId, String[] transportNames, IBackupObserver observer) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "initializeTransports()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.initializeTransports(transportNames, observer); |
| } |
| } |
| |
| /** |
| * Clear the given package {@code packageName}'s backup data from the transport {@code |
| * transportName}. |
| */ |
| public void clearBackupData(@UserIdInt int userId, String transportName, String packageName) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "clearBackupData()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.clearBackupData(transportName, packageName); |
| } |
| } |
| |
| /** Return the name of the currently active transport. */ |
| @Nullable |
| public String getCurrentTransport(@UserIdInt int userId) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "getCurrentTransport()"); |
| |
| return userBackupManagerService == null |
| ? null |
| : userBackupManagerService.getCurrentTransport(); |
| } |
| |
| /** |
| * Returns the {@link ComponentName} of the host service of the selected transport or {@code |
| * null} if no transport selected or if the transport selected is not registered. |
| */ |
| @Nullable |
| public ComponentName getCurrentTransportComponent(@UserIdInt int userId) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "getCurrentTransportComponent()"); |
| |
| return userBackupManagerService == null |
| ? null |
| : userBackupManagerService.getCurrentTransportComponent(); |
| } |
| |
| /** Report all known, available backup transports by name. */ |
| @Nullable |
| public String[] listAllTransports(@UserIdInt int userId) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "listAllTransports()"); |
| |
| return userBackupManagerService == null |
| ? null |
| : userBackupManagerService.listAllTransports(); |
| } |
| |
| /** Report all known, available backup transports by {@link ComponentName}. */ |
| @Nullable |
| public ComponentName[] listAllTransportComponents(@UserIdInt int userId) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "listAllTransportComponents()"); |
| |
| return userBackupManagerService == null |
| ? null |
| : userBackupManagerService.listAllTransportComponents(); |
| } |
| |
| /** Report all system whitelisted transports. */ |
| @Nullable |
| public String[] getTransportWhitelist() { |
| // No permission check, intentionally. |
| String[] whitelistedTransports = new String[mTransportWhitelist.size()]; |
| int i = 0; |
| for (ComponentName component : mTransportWhitelist) { |
| whitelistedTransports[i] = component.flattenToShortString(); |
| i++; |
| } |
| return whitelistedTransports; |
| } |
| |
| /** |
| * Update the attributes of the transport identified by {@code transportComponent}. If the |
| * specified transport has not been bound at least once (for registration), this call will be |
| * ignored. Only the host process of the transport can change its description, otherwise a |
| * {@link SecurityException} will be thrown. |
| * |
| * @param transportComponent The identity of the transport being described. |
| * @param name A {@link String} with the new name for the transport. This is NOT for |
| * identification. MUST NOT be {@code null}. |
| * @param configurationIntent An {@link Intent} that can be passed to {@link |
| * Context#startActivity} in order to launch the transport's configuration UI. It may be |
| * {@code null} if the transport does not offer any user-facing configuration UI. |
| * @param currentDestinationString A {@link String} describing the destination to which the |
| * transport is currently sending data. MUST NOT be {@code null}. |
| * @param dataManagementIntent An {@link Intent} that can be passed to {@link |
| * Context#startActivity} in order to launch the transport's data-management UI. It may be |
| * {@code null} if the transport does not offer any user-facing data management UI. |
| * @param dataManagementLabel A {@link CharSequence} to be used as the label for the transport's |
| * data management affordance. This MUST be {@code null} when dataManagementIntent is {@code |
| * null} and MUST NOT be {@code null} when dataManagementIntent is not {@code null}. |
| * @throws SecurityException If the UID of the calling process differs from the package UID of |
| * {@code transportComponent} or if the caller does NOT have BACKUP permission. |
| */ |
| public void updateTransportAttributes( |
| @UserIdInt int userId, |
| ComponentName transportComponent, |
| String name, |
| @Nullable Intent configurationIntent, |
| String currentDestinationString, |
| @Nullable Intent dataManagementIntent, |
| CharSequence dataManagementLabel) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "updateTransportAttributes()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.updateTransportAttributes( |
| transportComponent, |
| name, |
| configurationIntent, |
| currentDestinationString, |
| dataManagementIntent, |
| dataManagementLabel); |
| } |
| } |
| |
| /** |
| * Selects transport {@code transportName} and returns the previously selected transport. |
| * |
| * @deprecated Use {@link #selectBackupTransportAsync(ComponentName, |
| * ISelectBackupTransportCallback)} instead. |
| */ |
| @Deprecated |
| @Nullable |
| public String selectBackupTransport(@UserIdInt int userId, String transportName) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "selectBackupTransport()"); |
| |
| return userBackupManagerService == null |
| ? null |
| : userBackupManagerService.selectBackupTransport(transportName); |
| } |
| |
| /** |
| * Selects transport {@code transportComponent} asynchronously and notifies {@code listener} |
| * with the result upon completion. |
| */ |
| public void selectBackupTransportAsync( |
| @UserIdInt int userId, |
| ComponentName transportComponent, |
| ISelectBackupTransportCallback listener) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "selectBackupTransportAsync()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.selectBackupTransportAsync(transportComponent, listener); |
| } |
| } |
| |
| /** |
| * Supply the configuration intent for the given transport. If the name is not one of the |
| * available transports, or if the transport does not supply any configuration UI, the method |
| * returns {@code null}. |
| */ |
| @Nullable |
| public Intent getConfigurationIntent(@UserIdInt int userId, String transportName) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "getConfigurationIntent()"); |
| |
| return userBackupManagerService == null |
| ? null |
| : userBackupManagerService.getConfigurationIntent(transportName); |
| } |
| |
| /** |
| * Sets the ancestral work profile for the calling user. |
| * |
| * <p> The ancestral work profile corresponds to the profile that was used to restore to the |
| * callers profile. |
| */ |
| public void setAncestralSerialNumber(long ancestralSerialNumber) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission( |
| Binder.getCallingUserHandle().getIdentifier(), |
| "setAncestralSerialNumber()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.setAncestralSerialNumber(ancestralSerialNumber); |
| } |
| } |
| |
| /** |
| * Returns a {@link UserHandle} for the user that has {@code ancestralSerialNumber} as the |
| * serial number of the its ancestral work profile. |
| * |
| * <p> The ancestral work profile is set by {@link #setAncestralSerialNumber(long)} |
| * and it corresponds to the profile that was used to restore to the callers profile. |
| */ |
| @Nullable |
| public UserHandle getUserForAncestralSerialNumber(long ancestralSerialNumber) { |
| int callingUserId = Binder.getCallingUserHandle().getIdentifier(); |
| long oldId = Binder.clearCallingIdentity(); |
| int[] userIds; |
| try { |
| userIds = mContext.getSystemService(UserManager.class).getProfileIds(callingUserId, |
| false); |
| } finally { |
| Binder.restoreCallingIdentity(oldId); |
| } |
| |
| for (int userId : userIds) { |
| UserBackupManagerService userBackupManagerService = getServiceUsers().get(userId); |
| if (userBackupManagerService != null) { |
| if (userBackupManagerService.getAncestralSerialNumber() == ancestralSerialNumber) { |
| return UserHandle.of(userId); |
| } |
| } |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Supply the current destination string for the given transport. If the name is not one of the |
| * registered transports the method will return null. |
| * |
| * <p>This string is used VERBATIM as the summary text of the relevant Settings item. |
| * |
| * @param transportName The name of the registered transport. |
| * @return The current destination string or null if the transport is not registered. |
| */ |
| @Nullable |
| public String getDestinationString(@UserIdInt int userId, String transportName) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "getDestinationString()"); |
| |
| return userBackupManagerService == null |
| ? null |
| : userBackupManagerService.getDestinationString(transportName); |
| } |
| |
| /** Supply the manage-data intent for the given transport. */ |
| @Nullable |
| public Intent getDataManagementIntent(@UserIdInt int userId, String transportName) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "getDataManagementIntent()"); |
| |
| return userBackupManagerService == null |
| ? null |
| : userBackupManagerService.getDataManagementIntent(transportName); |
| } |
| |
| /** |
| * Supply the menu label for affordances that fire the manage-data intent for the given |
| * transport. |
| */ |
| @Nullable |
| public CharSequence getDataManagementLabel(@UserIdInt int userId, String transportName) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "getDataManagementLabel()"); |
| |
| return userBackupManagerService == null |
| ? null |
| : userBackupManagerService.getDataManagementLabel(transportName); |
| } |
| |
| // --------------------------------------------- |
| // SETTINGS OPERATIONS |
| // --------------------------------------------- |
| |
| /** Enable/disable the backup service. This is user-configurable via backup settings. */ |
| public void setBackupEnabled(@UserIdInt int userId, boolean enable) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "setBackupEnabled()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.setBackupEnabled(enable); |
| } |
| } |
| |
| /** Enable/disable automatic restore of app data at install time. */ |
| public void setAutoRestore(@UserIdInt int userId, boolean autoRestore) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "setAutoRestore()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.setAutoRestore(autoRestore); |
| } |
| } |
| |
| /** |
| * Return {@code true} if the backup mechanism is currently enabled, else returns {@code false}. |
| */ |
| public boolean isBackupEnabled(@UserIdInt int userId) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "isBackupEnabled()"); |
| |
| return userBackupManagerService != null && userBackupManagerService.isBackupEnabled(); |
| } |
| |
| // --------------------------------------------- |
| // BACKUP OPERATIONS |
| // --------------------------------------------- |
| |
| /** Checks if the given package {@code packageName} is eligible for backup. */ |
| public boolean isAppEligibleForBackup(@UserIdInt int userId, String packageName) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "isAppEligibleForBackup()"); |
| |
| return userBackupManagerService != null |
| && userBackupManagerService.isAppEligibleForBackup(packageName); |
| } |
| |
| /** |
| * Returns from the inputted packages {@code packages}, the ones that are eligible for backup. |
| */ |
| @Nullable |
| public String[] filterAppsEligibleForBackup(@UserIdInt int userId, String[] packages) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "filterAppsEligibleForBackup()"); |
| |
| return userBackupManagerService == null |
| ? null |
| : userBackupManagerService.filterAppsEligibleForBackup(packages); |
| } |
| |
| /** |
| * Run a backup pass immediately for any key-value backup applications that have declared that |
| * they have pending updates. |
| */ |
| public void backupNow(@UserIdInt int userId) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "backupNow()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.backupNow(); |
| } |
| } |
| |
| /** |
| * Requests a backup for the inputted {@code packages} with a specified callback {@link |
| * IBackupManagerMonitor} for receiving events during the operation. |
| */ |
| public int requestBackup( |
| @UserIdInt int userId, |
| String[] packages, |
| IBackupObserver observer, |
| IBackupManagerMonitor monitor, |
| int flags) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "requestBackup()"); |
| |
| return userBackupManagerService == null |
| ? BackupManager.ERROR_BACKUP_NOT_ALLOWED |
| : userBackupManagerService.requestBackup(packages, observer, monitor, flags); |
| } |
| |
| /** Cancel all running backup operations. */ |
| public void cancelBackups(@UserIdInt int userId) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "cancelBackups()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.cancelBackups(); |
| } |
| } |
| |
| /** |
| * Used by the {@link JobScheduler} to run a full backup when conditions are right. The model we |
| * use is to perform one app backup per scheduled job execution, and to reschedule the job with |
| * zero latency as long as conditions remain right and we still have work to do. |
| * |
| * @return Whether ongoing work will continue. The return value here will be passed along as the |
| * return value to the callback {@link JobService#onStartJob(JobParameters)}. |
| */ |
| public boolean beginFullBackup(@UserIdInt int userId, FullBackupJob scheduledJob) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "beginFullBackup()"); |
| |
| return userBackupManagerService != null |
| && userBackupManagerService.beginFullBackup(scheduledJob); |
| } |
| |
| /** |
| * Used by the {@link JobScheduler} to end the current full backup task when conditions are no |
| * longer met for running the full backup job. |
| */ |
| public void endFullBackup(@UserIdInt int userId) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "endFullBackup()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.endFullBackup(); |
| } |
| } |
| |
| /** |
| * Run a full backup pass for the given packages {@code packageNames}. Used by 'adb shell bmgr'. |
| */ |
| public void fullTransportBackup(@UserIdInt int userId, String[] packageNames) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "fullTransportBackup()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.fullTransportBackup(packageNames); |
| } |
| } |
| |
| // --------------------------------------------- |
| // RESTORE OPERATIONS |
| // --------------------------------------------- |
| |
| /** |
| * Used to run a restore pass for an application that is being installed. This should only be |
| * called from the {@link PackageManager}. |
| */ |
| public void restoreAtInstall(@UserIdInt int userId, String packageName, int token) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "restoreAtInstall()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.restoreAtInstall(packageName, token); |
| } |
| } |
| |
| /** |
| * Begin a restore for the specified package {@code packageName} using the specified transport |
| * {@code transportName}. |
| */ |
| @Nullable |
| public IRestoreSession beginRestoreSession( |
| @UserIdInt int userId, String packageName, String transportName) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "beginRestoreSession()"); |
| |
| return userBackupManagerService == null |
| ? null |
| : userBackupManagerService.beginRestoreSession(packageName, transportName); |
| } |
| |
| /** |
| * Get the restore-set token for the best-available restore set for this {@code packageName}: |
| * the active set if possible, else the ancestral one. Returns zero if none available. |
| */ |
| public long getAvailableRestoreToken(@UserIdInt int userId, String packageName) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "getAvailableRestoreToken()"); |
| |
| return userBackupManagerService == null |
| ? 0 |
| : userBackupManagerService.getAvailableRestoreToken(packageName); |
| } |
| |
| // --------------------------------------------- |
| // ADB BACKUP/RESTORE OPERATIONS |
| // --------------------------------------------- |
| |
| /** Sets the backup password used when running adb backup. */ |
| public boolean setBackupPassword(String currentPassword, String newPassword) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission( |
| UserHandle.USER_SYSTEM, "setBackupPassword()"); |
| |
| return userBackupManagerService != null |
| && userBackupManagerService.setBackupPassword(currentPassword, newPassword); |
| } |
| |
| /** Returns {@code true} if adb backup was run with a password, else returns {@code false}. */ |
| public boolean hasBackupPassword() { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission( |
| UserHandle.USER_SYSTEM, "hasBackupPassword()"); |
| |
| return userBackupManagerService != null && userBackupManagerService.hasBackupPassword(); |
| } |
| |
| /** |
| * Used by 'adb backup' to run a backup pass for packages {@code packageNames} supplied via the |
| * command line, writing the resulting data stream to the supplied {@code fd}. This method is |
| * synchronous and does not return to the caller until the backup has been completed. It |
| * requires on-screen confirmation by the user. |
| */ |
| public void adbBackup( |
| @UserIdInt int userId, |
| ParcelFileDescriptor fd, |
| boolean includeApks, |
| boolean includeObbs, |
| boolean includeShared, |
| boolean doWidgets, |
| boolean doAllApps, |
| boolean includeSystem, |
| boolean doCompress, |
| boolean doKeyValue, |
| String[] packageNames) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "adbBackup()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.adbBackup( |
| fd, |
| includeApks, |
| includeObbs, |
| includeShared, |
| doWidgets, |
| doAllApps, |
| includeSystem, |
| doCompress, |
| doKeyValue, |
| packageNames); |
| } |
| } |
| |
| /** |
| * Used by 'adb restore' to run a restore pass reading from the supplied {@code fd}. This method |
| * is synchronous and does not return to the caller until the restore has been completed. It |
| * requires on-screen confirmation by the user. |
| */ |
| public void adbRestore(@UserIdInt int userId, ParcelFileDescriptor fd) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "adbRestore()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.adbRestore(fd); |
| } |
| } |
| |
| /** |
| * Confirm that the previously requested adb backup/restore operation can proceed. This is used |
| * to require a user-facing disclosure about the operation. |
| */ |
| public void acknowledgeAdbBackupOrRestore( |
| @UserIdInt int userId, |
| int token, |
| boolean allow, |
| String currentPassword, |
| String encryptionPassword, |
| IFullBackupRestoreObserver observer) { |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(userId, "acknowledgeAdbBackupOrRestore()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.acknowledgeAdbBackupOrRestore( |
| token, allow, currentPassword, encryptionPassword, observer); |
| } |
| } |
| |
| // --------------------------------------------- |
| // SERVICE OPERATIONS |
| // --------------------------------------------- |
| |
| /** Prints service state for 'dumpsys backup'. */ |
| public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| if (!DumpUtils.checkDumpAndUsageStatsPermission(mContext, TAG, pw)) { |
| return; |
| } |
| |
| if (args != null) { |
| for (String arg : args) { |
| if ("users".equals(arg.toLowerCase())) { |
| pw.print(DUMP_RUNNING_USERS_MESSAGE); |
| for (int i = 0; i < mServiceUsers.size(); i++) { |
| pw.print(" " + mServiceUsers.keyAt(i)); |
| } |
| pw.println(); |
| return; |
| } |
| } |
| } |
| |
| UserBackupManagerService userBackupManagerService = |
| getServiceForUserIfCallerHasPermission(UserHandle.USER_SYSTEM, "dump()"); |
| |
| if (userBackupManagerService != null) { |
| userBackupManagerService.dump(fd, pw, args); |
| } |
| } |
| |
| /** Implementation to receive lifecycle event callbacks for system services. */ |
| public static final class Lifecycle extends SystemService { |
| public Lifecycle(Context context) { |
| super(context); |
| sInstance = new Trampoline(context); |
| } |
| |
| @Override |
| public void onStart() { |
| publishBinderService(Context.BACKUP_SERVICE, sInstance); |
| } |
| |
| @Override |
| public void onUnlockUser(int userId) { |
| if (userId == UserHandle.USER_SYSTEM) { |
| sInstance.initializeService(); |
| } |
| sInstance.unlockUser(userId); |
| } |
| |
| @Override |
| public void onStopUser(int userId) { |
| sInstance.stopUser(userId); |
| } |
| } |
| } |
