SystemBackupAgent.java revision 4a627c71ff53a4fca1f961f4b1dcc0461df18a06
19bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato/* 29bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato * Copyright (C) 2009 The Android Open Source Project 39bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato * 49bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato * Licensed under the Apache License, Version 2.0 (the "License"); 59bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato * you may not use this file except in compliance with the License. 69bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato * You may obtain a copy of the License at 79bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato * 89bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato * http://www.apache.org/licenses/LICENSE-2.0 99bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato * 109bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato * Unless required by applicable law or agreed to in writing, software 119bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato * distributed under the License is distributed on an "AS IS" BASIS, 129bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato * See the License for the specific language governing permissions and 149bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato * limitations under the License. 159bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato */ 169bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato 179bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onoratopackage com.android.server; 189bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato 19a924dc0db952fe32509435fdb8dc9c84a9e181f3Dianne Hackborn 204528186e0d65fc68ef0dd1941aa2ac8aefcd55a3Christopher Tateimport android.app.backup.BackupDataInput; 214528186e0d65fc68ef0dd1941aa2ac8aefcd55a3Christopher Tateimport android.app.backup.BackupDataOutput; 22cc84c69726507a85116f5664e20e2ebfac76edbeChristopher Tateimport android.app.backup.BackupAgentHelper; 234a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tateimport android.app.backup.FullBackup; 243f64f8d8fc05189777e83b4efd3882cbc661fdebChristopher Tateimport android.app.backup.WallpaperBackupHelper; 259bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onoratoimport android.content.Context; 269bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onoratoimport android.os.ParcelFileDescriptor; 279bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onoratoimport android.os.ServiceManager; 288a9b22056b13477f59df934928c00c58b5871c95Joe Onoratoimport android.util.Slog; 299bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato 303f64f8d8fc05189777e83b4efd3882cbc661fdebChristopher Tate 319bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onoratoimport java.io.File; 329bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onoratoimport java.io.IOException; 339bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato 349bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato/** 357c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate * Backup agent for various system-managed data, currently just the system wallpaper 369bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato */ 37cc84c69726507a85116f5664e20e2ebfac76edbeChristopher Tatepublic class SystemBackupAgent extends BackupAgentHelper { 389bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato private static final String TAG = "SystemBackupAgent"; 399bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato 407c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate // These paths must match what the WallpaperManagerService uses 414a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate private static final String WALLPAPER_IMAGE_DIR = "/data/data/com.android.settings/files"; 424a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate private static final String WALLPAPER_IMAGE = WALLPAPER_IMAGE_DIR + "/wallpaper"; 434a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate private static final String WALLPAPER_INFO_DIR = "/data/system"; 444a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate private static final String WALLPAPER_INFO = WALLPAPER_INFO_DIR + "/wallpaper_info.xml"; 459bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato 469bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato @Override 477c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate public void onBackup(ParcelFileDescriptor oldState, BackupDataOutput data, 487c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate ParcelFileDescriptor newState) throws IOException { 494a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate if (oldState == null) { 504a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate runFullBackup(data); 514a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate return; 524a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate } 534a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate 547c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate // We only back up the data under the current "wallpaper" schema with metadata 55541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor WallpaperManagerService wallpaper = (WallpaperManagerService)ServiceManager.getService( 56541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor Context.WALLPAPER_SERVICE); 57541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor String[] files = new String[] { WALLPAPER_IMAGE, WALLPAPER_INFO }; 58541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor if (wallpaper != null && wallpaper.mName != null && wallpaper.mName.length() > 0) { 59541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor // When the wallpaper has a name, back up the info by itself. 60541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor // TODO: Don't rely on the innards of the service object like this! 61541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor // TODO: Send a delete for any stored wallpaper image in this case? 62541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor files = new String[] { WALLPAPER_INFO }; 63541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor } 643f64f8d8fc05189777e83b4efd3882cbc661fdebChristopher Tate addHelper("wallpaper", new WallpaperBackupHelper(SystemBackupAgent.this, files)); 657c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate super.onBackup(oldState, data, newState); 669bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato } 679bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato 684a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate private void runFullBackup(BackupDataOutput output) { 694a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate // Back up the data files directly 704a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate FullBackup.backupToTar(getPackageName(), null, null, 714a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate WALLPAPER_IMAGE_DIR, WALLPAPER_IMAGE, output); 724a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate FullBackup.backupToTar(getPackageName(), null, null, 734a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate WALLPAPER_INFO_DIR, WALLPAPER_INFO, output); 744a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate } 754a627c71ff53a4fca1f961f4b1dcc0461df18a06Christopher Tate 769bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato @Override 779bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato public void onRestore(BackupDataInput data, int appVersionCode, ParcelFileDescriptor newState) 789bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato throws IOException { 797c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate // On restore, we also support a previous data schema "system_files" 803f64f8d8fc05189777e83b4efd3882cbc661fdebChristopher Tate addHelper("wallpaper", new WallpaperBackupHelper(SystemBackupAgent.this, 817c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate new String[] { WALLPAPER_IMAGE, WALLPAPER_INFO })); 823f64f8d8fc05189777e83b4efd3882cbc661fdebChristopher Tate addHelper("system_files", new WallpaperBackupHelper(SystemBackupAgent.this, 837c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate new String[] { WALLPAPER_IMAGE })); 847c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate 859bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato try { 869bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato super.onRestore(data, appVersionCode, newState); 879bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato 888cc6a5026aeb5cf9cc36529426fe0cc66714f5fbDianne Hackborn WallpaperManagerService wallpaper = (WallpaperManagerService)ServiceManager.getService( 899bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato Context.WALLPAPER_SERVICE); 909bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato wallpaper.settingsRestored(); 919bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato } catch (IOException ex) { 923f64f8d8fc05189777e83b4efd3882cbc661fdebChristopher Tate // If there was a failure, delete everything for the wallpaper, this is too aggressive, 939bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato // but this is hopefully a rare failure. 948a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.d(TAG, "restore failed", ex); 959bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato (new File(WALLPAPER_IMAGE)).delete(); 969bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato (new File(WALLPAPER_INFO)).delete(); 979bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato } 989bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato } 999bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato} 100