SystemBackupAgent.java revision 4528186e0d65fc68ef0dd1941aa2ac8aefcd55a3
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 194528186e0d65fc68ef0dd1941aa2ac8aefcd55a3Christopher Tateimport android.app.backup.AbsoluteFileBackupHelper; 204528186e0d65fc68ef0dd1941aa2ac8aefcd55a3Christopher Tateimport android.app.backup.BackupDataInput; 214528186e0d65fc68ef0dd1941aa2ac8aefcd55a3Christopher Tateimport android.app.backup.BackupDataInputStream; 224528186e0d65fc68ef0dd1941aa2ac8aefcd55a3Christopher Tateimport android.app.backup.BackupDataOutput; 234528186e0d65fc68ef0dd1941aa2ac8aefcd55a3Christopher Tateimport android.app.backup.BackupHelper; 244528186e0d65fc68ef0dd1941aa2ac8aefcd55a3Christopher Tateimport android.app.backup.BackupHelperAgent; 259bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onoratoimport android.content.Context; 269bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onoratoimport android.os.ParcelFileDescriptor; 279bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onoratoimport android.os.ServiceManager; 289bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onoratoimport android.os.SystemService; 298a9b22056b13477f59df934928c00c58b5871c95Joe Onoratoimport android.util.Slog; 309bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato 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 */ 379bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onoratopublic class SystemBackupAgent extends BackupHelperAgent { 389bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato private static final String TAG = "SystemBackupAgent"; 399bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato 407c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate // These paths must match what the WallpaperManagerService uses 419bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato private static final String WALLPAPER_IMAGE = "/data/data/com.android.settings/files/wallpaper"; 429bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato private static final String WALLPAPER_INFO = "/data/system/wallpaper_info.xml"; 439bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato 449bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato @Override 457c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate public void onBackup(ParcelFileDescriptor oldState, BackupDataOutput data, 467c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate ParcelFileDescriptor newState) throws IOException { 477c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate // We only back up the data under the current "wallpaper" schema with metadata 48541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor WallpaperManagerService wallpaper = (WallpaperManagerService)ServiceManager.getService( 49541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor Context.WALLPAPER_SERVICE); 50541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor String[] files = new String[] { WALLPAPER_IMAGE, WALLPAPER_INFO }; 51541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor if (wallpaper != null && wallpaper.mName != null && wallpaper.mName.length() > 0) { 52541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor // When the wallpaper has a name, back up the info by itself. 53541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor // TODO: Don't rely on the innards of the service object like this! 54541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor // TODO: Send a delete for any stored wallpaper image in this case? 55541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor files = new String[] { WALLPAPER_INFO }; 56541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor } 57541fa51e5ccba9e2def2632f9835db0c9407ec5cDan Egnor addHelper("wallpaper", new AbsoluteFileBackupHelper(SystemBackupAgent.this, files)); 587c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate super.onBackup(oldState, data, newState); 599bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato } 609bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato 619bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato @Override 629bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato public void onRestore(BackupDataInput data, int appVersionCode, ParcelFileDescriptor newState) 639bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato throws IOException { 647c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate // On restore, we also support a previous data schema "system_files" 657c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate addHelper("wallpaper", new AbsoluteFileBackupHelper(SystemBackupAgent.this, 667c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate new String[] { WALLPAPER_IMAGE, WALLPAPER_INFO })); 677c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate addHelper("system_files", new AbsoluteFileBackupHelper(SystemBackupAgent.this, 687c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate new String[] { WALLPAPER_IMAGE })); 697c2bb66db77653c0a690962858cf105b0cb981d7Christopher Tate 709bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato boolean success = false; 719bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato try { 729bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato super.onRestore(data, appVersionCode, newState); 739bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato 748cc6a5026aeb5cf9cc36529426fe0cc66714f5fbDianne Hackborn WallpaperManagerService wallpaper = (WallpaperManagerService)ServiceManager.getService( 759bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato Context.WALLPAPER_SERVICE); 769bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato wallpaper.settingsRestored(); 779bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato } catch (IOException ex) { 789bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato // If there was a failure, delete everything for the wallpaper, this is too aggresive, 799bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato // but this is hopefully a rare failure. 808a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.d(TAG, "restore failed", ex); 819bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato (new File(WALLPAPER_IMAGE)).delete(); 829bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato (new File(WALLPAPER_INFO)).delete(); 839bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato } 849bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato } 859bb8fd77c8dc177aab9ac96bed4f55972dcda70aJoe Onorato} 86