1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.backup; 18 19 import android.app.IWallpaperManager; 20 import android.app.backup.BackupAgentHelper; 21 import android.app.backup.BackupDataInput; 22 import android.app.backup.BackupDataOutput; 23 import android.app.backup.FullBackup; 24 import android.app.backup.FullBackupDataOutput; 25 import android.app.backup.WallpaperBackupHelper; 26 import android.content.Context; 27 import android.os.Environment; 28 import android.os.ParcelFileDescriptor; 29 import android.os.RemoteException; 30 import android.os.ServiceManager; 31 import android.os.UserHandle; 32 import android.util.Slog; 33 34 import java.io.File; 35 import java.io.IOException; 36 37 /** 38 * Backup agent for various system-managed data. Wallpapers are now handled by a 39 * separate package, but we still process restores from legacy datasets here. 40 */ 41 public class SystemBackupAgent extends BackupAgentHelper { 42 private static final String TAG = "SystemBackupAgent"; 43 44 // Names of the helper tags within the dataset. Changing one of these names will 45 // break the ability to restore from datasets that predate the change. 46 private static final String WALLPAPER_HELPER = "wallpaper"; 47 private static final String SYNC_SETTINGS_HELPER = "account_sync_settings"; 48 private static final String PREFERRED_HELPER = "preferred_activities"; 49 private static final String NOTIFICATION_HELPER = "notifications"; 50 private static final String PERMISSION_HELPER = "permissions"; 51 private static final String USAGE_STATS_HELPER = "usage_stats"; 52 private static final String SHORTCUT_MANAGER_HELPER = "shortcut_manager"; 53 private static final String ACCOUNT_MANAGER_HELPER = "account_manager"; 54 private static final String SLICES_HELPER = "slices"; 55 56 // These paths must match what the WallpaperManagerService uses. The leaf *_FILENAME 57 // are also used in the full-backup file format, so must not change unless steps are 58 // taken to support the legacy backed-up datasets. 59 private static final String WALLPAPER_IMAGE_FILENAME = "wallpaper"; 60 private static final String WALLPAPER_INFO_FILENAME = "wallpaper_info.xml"; 61 62 // TODO: Will need to change if backing up non-primary user's wallpaper 63 // TODO: http://b/22388012 64 private static final String WALLPAPER_IMAGE_DIR = 65 Environment.getUserSystemDirectory(UserHandle.USER_SYSTEM).getAbsolutePath(); 66 public static final String WALLPAPER_IMAGE = 67 new File(Environment.getUserSystemDirectory(UserHandle.USER_SYSTEM), 68 "wallpaper").getAbsolutePath(); 69 70 // TODO: Will need to change if backing up non-primary user's wallpaper 71 // TODO: http://b/22388012 72 private static final String WALLPAPER_INFO_DIR = 73 Environment.getUserSystemDirectory(UserHandle.USER_SYSTEM).getAbsolutePath(); 74 public static final String WALLPAPER_INFO = 75 new File(Environment.getUserSystemDirectory(UserHandle.USER_SYSTEM), 76 "wallpaper_info.xml").getAbsolutePath(); 77 // Use old keys to keep legacy data compatibility and avoid writing two wallpapers 78 private static final String WALLPAPER_IMAGE_KEY = WallpaperBackupHelper.WALLPAPER_IMAGE_KEY; 79 80 private WallpaperBackupHelper mWallpaperHelper = null; 81 82 @Override 83 public void onBackup(ParcelFileDescriptor oldState, BackupDataOutput data, 84 ParcelFileDescriptor newState) throws IOException { 85 addHelper(SYNC_SETTINGS_HELPER, new AccountSyncSettingsBackupHelper(this)); 86 addHelper(PREFERRED_HELPER, new PreferredActivityBackupHelper()); 87 addHelper(NOTIFICATION_HELPER, new NotificationBackupHelper(this)); 88 addHelper(PERMISSION_HELPER, new PermissionBackupHelper()); 89 addHelper(USAGE_STATS_HELPER, new UsageStatsBackupHelper(this)); 90 addHelper(SHORTCUT_MANAGER_HELPER, new ShortcutBackupHelper()); 91 addHelper(ACCOUNT_MANAGER_HELPER, new AccountManagerBackupHelper()); 92 addHelper(SLICES_HELPER, new SliceBackupHelper(this)); 93 super.onBackup(oldState, data, newState); 94 } 95 96 @Override 97 public void onFullBackup(FullBackupDataOutput data) throws IOException { 98 // At present we don't back up anything 99 } 100 101 @Override 102 public void onRestore(BackupDataInput data, int appVersionCode, ParcelFileDescriptor newState) 103 throws IOException { 104 // Slot in a restore helper for the older wallpaper backup schema to support restore 105 // from devices still generating data in that format. 106 mWallpaperHelper = new WallpaperBackupHelper(this, 107 new String[] { WALLPAPER_IMAGE_KEY} ); 108 addHelper(WALLPAPER_HELPER, mWallpaperHelper); 109 110 // On restore, we also support a long-ago wallpaper data schema "system_files" 111 addHelper("system_files", new WallpaperBackupHelper(this, 112 new String[] { WALLPAPER_IMAGE_KEY} )); 113 114 addHelper(SYNC_SETTINGS_HELPER, new AccountSyncSettingsBackupHelper(this)); 115 addHelper(PREFERRED_HELPER, new PreferredActivityBackupHelper()); 116 addHelper(NOTIFICATION_HELPER, new NotificationBackupHelper(this)); 117 addHelper(PERMISSION_HELPER, new PermissionBackupHelper()); 118 addHelper(USAGE_STATS_HELPER, new UsageStatsBackupHelper(this)); 119 addHelper(SHORTCUT_MANAGER_HELPER, new ShortcutBackupHelper()); 120 addHelper(ACCOUNT_MANAGER_HELPER, new AccountManagerBackupHelper()); 121 addHelper(SLICES_HELPER, new SliceBackupHelper(this)); 122 123 super.onRestore(data, appVersionCode, newState); 124 } 125 126 /** 127 * Support for 'adb restore' of legacy archives 128 */ 129 @Override 130 public void onRestoreFile(ParcelFileDescriptor data, long size, 131 int type, String domain, String path, long mode, long mtime) 132 throws IOException { 133 Slog.i(TAG, "Restoring file domain=" + domain + " path=" + path); 134 135 // Bits to indicate postprocessing we may need to perform 136 boolean restoredWallpaper = false; 137 138 File outFile = null; 139 // Various domain+files we understand a priori 140 if (domain.equals(FullBackup.ROOT_TREE_TOKEN)) { 141 if (path.equals(WALLPAPER_INFO_FILENAME)) { 142 outFile = new File(WALLPAPER_INFO); 143 restoredWallpaper = true; 144 } else if (path.equals(WALLPAPER_IMAGE_FILENAME)) { 145 outFile = new File(WALLPAPER_IMAGE); 146 restoredWallpaper = true; 147 } 148 } 149 150 try { 151 if (outFile == null) { 152 Slog.w(TAG, "Skipping unrecognized system file: [ " + domain + " : " + path + " ]"); 153 } 154 FullBackup.restoreFile(data, size, type, mode, mtime, outFile); 155 156 if (restoredWallpaper) { 157 IWallpaperManager wallpaper = 158 (IWallpaperManager)ServiceManager.getService( 159 Context.WALLPAPER_SERVICE); 160 if (wallpaper != null) { 161 try { 162 wallpaper.settingsRestored(); 163 } catch (RemoteException re) { 164 Slog.e(TAG, "Couldn't restore settings\n" + re); 165 } 166 } 167 } 168 } catch (IOException e) { 169 if (restoredWallpaper) { 170 // Make sure we wind up in a good state 171 (new File(WALLPAPER_IMAGE)).delete(); 172 (new File(WALLPAPER_INFO)).delete(); 173 } 174 } 175 } 176 } 177
