Christopher Tate | 4a627c7 | 2011-04-01 14:43:32 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 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.backupconfirm; |
| 18 | |
| 19 | import android.app.Activity; |
| 20 | import android.app.backup.FullBackup; |
| 21 | import android.app.backup.IBackupManager; |
| 22 | import android.app.backup.IFullBackupRestoreObserver; |
| 23 | import android.content.Context; |
| 24 | import android.content.Intent; |
| 25 | import android.os.Bundle; |
| 26 | import android.os.Handler; |
| 27 | import android.os.Looper; |
| 28 | import android.os.Message; |
| 29 | import android.os.RemoteException; |
| 30 | import android.os.ServiceManager; |
| 31 | import android.util.Slog; |
| 32 | import android.view.View; |
| 33 | import android.widget.Button; |
| 34 | import android.widget.TextView; |
| 35 | import android.widget.Toast; |
| 36 | |
| 37 | /** |
| 38 | * Confirm with the user that a requested full backup/restore operation is legitimate. |
| 39 | * Any attempt to perform a full backup/restore will launch this UI and wait for a |
| 40 | * designated timeout interval (nominally 30 seconds) for the user to confirm. If the |
| 41 | * user fails to respond within the timeout period, or explicitly refuses the operation |
| 42 | * within the UI presented here, no data will be transferred off the device. |
| 43 | * |
| 44 | * Note that the fully scoped name of this class is baked into the backup manager service. |
| 45 | * |
| 46 | * @hide |
| 47 | */ |
| 48 | public class BackupRestoreConfirmation extends Activity { |
| 49 | static final String TAG = "BackupRestoreConfirmation"; |
| 50 | static final boolean DEBUG = true; |
| 51 | |
| 52 | static final int MSG_START_BACKUP = 1; |
| 53 | static final int MSG_BACKUP_PACKAGE = 2; |
| 54 | static final int MSG_END_BACKUP = 3; |
| 55 | static final int MSG_START_RESTORE = 11; |
| 56 | static final int MSG_RESTORE_PACKAGE = 12; |
| 57 | static final int MSG_END_RESTORE = 13; |
| 58 | static final int MSG_TIMEOUT = 100; |
| 59 | |
| 60 | Handler mHandler; |
| 61 | IBackupManager mBackupManager; |
| 62 | FullObserver mObserver; |
| 63 | int mToken; |
| 64 | |
| 65 | TextView mStatusView; |
| 66 | Button mAllowButton; |
| 67 | Button mDenyButton; |
| 68 | |
| 69 | // Handler for dealing with observer callbacks on the main thread |
| 70 | class ObserverHandler extends Handler { |
| 71 | Context mContext; |
| 72 | ObserverHandler(Context context) { |
| 73 | mContext = context; |
| 74 | } |
| 75 | |
| 76 | @Override |
| 77 | public void handleMessage(Message msg) { |
| 78 | switch (msg.what) { |
| 79 | case MSG_START_BACKUP: { |
| 80 | Toast.makeText(mContext, "!!! Backup starting !!!", Toast.LENGTH_LONG); |
| 81 | } |
| 82 | break; |
| 83 | |
| 84 | case MSG_BACKUP_PACKAGE: { |
| 85 | String name = (String) msg.obj; |
| 86 | mStatusView.setText(name); |
| 87 | } |
| 88 | break; |
| 89 | |
| 90 | case MSG_END_BACKUP: { |
| 91 | Toast.makeText(mContext, "!!! Backup ended !!!", Toast.LENGTH_SHORT); |
| 92 | } |
| 93 | break; |
| 94 | |
| 95 | case MSG_START_RESTORE: { |
| 96 | Toast.makeText(mContext, "!!! Restore starting !!!", Toast.LENGTH_LONG); |
| 97 | } |
| 98 | break; |
| 99 | |
| 100 | case MSG_RESTORE_PACKAGE: { |
| 101 | } |
| 102 | break; |
| 103 | |
| 104 | case MSG_END_RESTORE: { |
| 105 | Toast.makeText(mContext, "!!! Restore ended !!!", Toast.LENGTH_SHORT); |
| 106 | } |
| 107 | break; |
| 108 | |
| 109 | case MSG_TIMEOUT: { |
| 110 | } |
| 111 | break; |
| 112 | } |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | @Override |
| 117 | public void onCreate(Bundle icicle) { |
| 118 | super.onCreate(icicle); |
| 119 | |
| 120 | final Intent intent = getIntent(); |
| 121 | final String action = intent.getAction(); |
| 122 | |
| 123 | int layoutId; |
| 124 | if (action.equals(FullBackup.FULL_BACKUP_INTENT_ACTION)) { |
| 125 | layoutId = R.layout.confirm_backup; |
| 126 | } else if (action.equals(FullBackup.FULL_RESTORE_INTENT_ACTION)) { |
| 127 | layoutId = R.layout.confirm_restore; |
| 128 | } else { |
| 129 | Slog.w(TAG, "Backup/restore confirmation activity launched with invalid action!"); |
| 130 | finish(); |
| 131 | return; |
| 132 | } |
| 133 | |
| 134 | mToken = intent.getIntExtra(FullBackup.CONF_TOKEN_INTENT_EXTRA, -1); |
| 135 | if (mToken < 0) { |
| 136 | Slog.e(TAG, "Backup/restore confirmation requested but no token passed!"); |
| 137 | finish(); |
| 138 | return; |
| 139 | } |
| 140 | |
| 141 | mBackupManager = IBackupManager.Stub.asInterface(ServiceManager.getService(Context.BACKUP_SERVICE)); |
| 142 | |
| 143 | mHandler = new ObserverHandler(getApplicationContext()); |
| 144 | mObserver = new FullObserver(); |
| 145 | |
| 146 | setContentView(layoutId); |
| 147 | |
| 148 | // Same resource IDs for each layout variant (backup / restore) |
| 149 | mStatusView = (TextView) findViewById(R.id.package_name); |
| 150 | mAllowButton = (Button) findViewById(R.id.button_allow); |
| 151 | mDenyButton = (Button) findViewById(R.id.button_deny); |
| 152 | |
| 153 | mAllowButton.setOnClickListener(new View.OnClickListener() { |
| 154 | @Override |
| 155 | public void onClick(View v) { |
| 156 | try { |
| 157 | mBackupManager.acknowledgeFullBackupOrRestore(mToken, true, mObserver); |
| 158 | } catch (RemoteException e) { |
| 159 | // TODO: bail gracefully if we can't contact the backup manager |
| 160 | } |
| 161 | mAllowButton.setEnabled(false); |
| 162 | mDenyButton.setEnabled(false); |
| 163 | } |
| 164 | }); |
| 165 | |
| 166 | mDenyButton.setOnClickListener(new View.OnClickListener() { |
| 167 | @Override |
| 168 | public void onClick(View v) { |
| 169 | try { |
| 170 | mBackupManager.acknowledgeFullBackupOrRestore(mToken, false, mObserver); |
| 171 | } catch (RemoteException e) { |
| 172 | // TODO: bail gracefully if we can't contact the backup manager |
| 173 | } |
| 174 | mAllowButton.setEnabled(false); |
| 175 | mDenyButton.setEnabled(false); |
| 176 | } |
| 177 | }); |
| 178 | } |
| 179 | |
| 180 | @Override |
| 181 | public void onStop() { |
| 182 | super.onStop(); |
| 183 | |
| 184 | // We explicitly equate departure from the UI with refusal. This includes the |
| 185 | // implicit configuration-changed stop/restart cycle. |
| 186 | try { |
| 187 | mBackupManager.acknowledgeFullBackupOrRestore(mToken, false, null); |
| 188 | } catch (RemoteException e) { |
| 189 | // if this fails we'll still time out with no acknowledgment |
| 190 | } |
| 191 | finish(); |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * The observer binder for showing backup/restore progress. This binder just bounces |
| 196 | * the notifications onto the main thread. |
| 197 | */ |
| 198 | class FullObserver extends IFullBackupRestoreObserver.Stub { |
| 199 | // |
| 200 | // IFullBackupRestoreObserver implementation |
| 201 | // |
| 202 | @Override |
| 203 | public void onStartBackup() throws RemoteException { |
| 204 | mHandler.sendEmptyMessage(MSG_START_BACKUP); |
| 205 | } |
| 206 | |
| 207 | @Override |
| 208 | public void onBackupPackage(String name) throws RemoteException { |
| 209 | mHandler.sendMessage(mHandler.obtainMessage(MSG_BACKUP_PACKAGE, name)); |
| 210 | } |
| 211 | |
| 212 | @Override |
| 213 | public void onEndBackup() throws RemoteException { |
| 214 | mHandler.sendEmptyMessage(MSG_END_BACKUP); |
| 215 | } |
| 216 | |
| 217 | @Override |
| 218 | public void onStartRestore() throws RemoteException { |
| 219 | mHandler.sendEmptyMessage(MSG_START_RESTORE); |
| 220 | } |
| 221 | |
| 222 | @Override |
| 223 | public void onRestorePackage(String name) throws RemoteException { |
| 224 | mHandler.sendMessage(mHandler.obtainMessage(MSG_RESTORE_PACKAGE, name)); |
| 225 | } |
| 226 | |
| 227 | @Override |
| 228 | public void onEndRestore() throws RemoteException { |
| 229 | mHandler.sendEmptyMessage(MSG_END_RESTORE); |
| 230 | } |
| 231 | |
| 232 | @Override |
| 233 | public void onTimeout() throws RemoteException { |
| 234 | mHandler.sendEmptyMessage(MSG_TIMEOUT); |
| 235 | } |
| 236 | } |
| 237 | } |