1 /* 2 * Copyright (C) 2015 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.AppGlobals; 20 import android.app.backup.BlobBackupHelper; 21 import android.content.pm.IPackageManager; 22 import android.os.UserHandle; 23 import android.util.Slog; 24 25 public class PreferredActivityBackupHelper extends BlobBackupHelper { 26 private static final String TAG = "PreferredBackup"; 27 private static final boolean DEBUG = false; 28 29 // current schema of the backup state blob 30 private static final int STATE_VERSION = 3; 31 32 // key under which the preferred-activity state blob is committed to backup 33 private static final String KEY_PREFERRED = "preferred-activity"; 34 35 // key for default-browser [etc] state 36 private static final String KEY_DEFAULT_APPS = "default-apps"; 37 38 // intent-filter verification state 39 private static final String KEY_INTENT_VERIFICATION = "intent-verification"; 40 41 public PreferredActivityBackupHelper() { 42 super(STATE_VERSION, 43 KEY_PREFERRED, 44 KEY_DEFAULT_APPS, 45 KEY_INTENT_VERIFICATION); 46 } 47 48 @Override 49 protected byte[] getBackupPayload(String key) { 50 IPackageManager pm = AppGlobals.getPackageManager(); 51 if (DEBUG) { 52 Slog.d(TAG, "Handling backup of " + key); 53 } 54 try { 55 // TODO: http://b/22388012 56 switch (key) { 57 case KEY_PREFERRED: 58 return pm.getPreferredActivityBackup(UserHandle.USER_SYSTEM); 59 case KEY_DEFAULT_APPS: 60 return pm.getDefaultAppsBackup(UserHandle.USER_SYSTEM); 61 case KEY_INTENT_VERIFICATION: 62 return pm.getIntentFilterVerificationBackup(UserHandle.USER_SYSTEM); 63 default: 64 Slog.w(TAG, "Unexpected backup key " + key); 65 } 66 } catch (Exception e) { 67 Slog.e(TAG, "Unable to store payload " + key); 68 } 69 return null; 70 } 71 72 @Override 73 protected void applyRestoredPayload(String key, byte[] payload) { 74 IPackageManager pm = AppGlobals.getPackageManager(); 75 if (DEBUG) { 76 Slog.d(TAG, "Handling restore of " + key); 77 } 78 try { 79 // TODO: http://b/22388012 80 switch (key) { 81 case KEY_PREFERRED: 82 pm.restorePreferredActivities(payload, UserHandle.USER_SYSTEM); 83 break; 84 case KEY_DEFAULT_APPS: 85 pm.restoreDefaultApps(payload, UserHandle.USER_SYSTEM); 86 break; 87 case KEY_INTENT_VERIFICATION: 88 pm.restoreIntentFilterVerification(payload, UserHandle.USER_SYSTEM); 89 break; 90 default: 91 Slog.w(TAG, "Unexpected restore key " + key); 92 } 93 } catch (Exception e) { 94 Slog.w(TAG, "Unable to restore key " + key); 95 } 96 } 97 } 98