Christopher Tate | 46cc43c | 2013-02-19 14:08:59 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 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.sharedstoragebackup; |
| 18 | |
| 19 | import android.app.Service; |
Christopher Tate | 46cc43c | 2013-02-19 14:08:59 -0800 | [diff] [blame] | 20 | import android.app.backup.FullBackup; |
Christopher Tate | 11ae768 | 2015-03-24 18:48:10 -0700 | [diff] [blame] | 21 | import android.app.backup.FullBackupDataOutput; |
Christopher Tate | 46cc43c | 2013-02-19 14:08:59 -0800 | [diff] [blame] | 22 | import android.app.backup.IBackupManager; |
| 23 | import android.content.Intent; |
| 24 | import android.os.Environment; |
| 25 | import android.os.IBinder; |
| 26 | import android.os.ParcelFileDescriptor; |
| 27 | import android.os.RemoteException; |
| 28 | import android.util.Log; |
| 29 | |
| 30 | import java.io.File; |
| 31 | import java.io.FileDescriptor; |
| 32 | import java.io.FileOutputStream; |
| 33 | import java.io.IOException; |
| 34 | import java.util.ArrayList; |
| 35 | |
| 36 | import com.android.internal.backup.IObbBackupService; |
| 37 | |
| 38 | /** |
| 39 | * Service that the Backup Manager Services delegates OBB backup/restore operations to, |
| 40 | * because those require accessing external storage. |
| 41 | * |
| 42 | * {@hide} |
| 43 | */ |
| 44 | public class ObbBackupService extends Service { |
| 45 | static final String TAG = "ObbBackupService"; |
| 46 | static final boolean DEBUG = true; |
| 47 | |
| 48 | /** |
| 49 | * IObbBackupService interface implementation |
| 50 | */ |
| 51 | IObbBackupService mService = new IObbBackupService.Stub() { |
| 52 | /* |
| 53 | * Back up a package's OBB directory tree |
| 54 | */ |
| 55 | @Override |
| 56 | public void backupObbs(String packageName, ParcelFileDescriptor data, |
| 57 | int token, IBackupManager callbackBinder) { |
| 58 | final FileDescriptor outFd = data.getFileDescriptor(); |
| 59 | try { |
Jeff Sharkey | 7f392de | 2013-08-11 17:42:17 -0700 | [diff] [blame] | 60 | File obbDir = Environment.buildExternalStorageAppObbDirs(packageName)[0]; |
Christopher Tate | 46cc43c | 2013-02-19 14:08:59 -0800 | [diff] [blame] | 61 | if (obbDir != null) { |
| 62 | if (obbDir.exists()) { |
| 63 | ArrayList<File> obbList = allFileContents(obbDir); |
| 64 | if (obbList != null) { |
| 65 | // okay, there's at least something there |
| 66 | if (DEBUG) { |
| 67 | Log.i(TAG, obbList.size() + " files to back up"); |
| 68 | } |
| 69 | final String rootPath = obbDir.getCanonicalPath(); |
Christopher Tate | 11ae768 | 2015-03-24 18:48:10 -0700 | [diff] [blame] | 70 | final FullBackupDataOutput out = new FullBackupDataOutput(data); |
Christopher Tate | 46cc43c | 2013-02-19 14:08:59 -0800 | [diff] [blame] | 71 | for (File f : obbList) { |
| 72 | final String filePath = f.getCanonicalPath(); |
| 73 | if (DEBUG) { |
| 74 | Log.i(TAG, "storing: " + filePath); |
| 75 | } |
| 76 | FullBackup.backupToTar(packageName, FullBackup.OBB_TREE_TOKEN, null, |
| 77 | rootPath, filePath, out); |
| 78 | } |
| 79 | } |
| 80 | } |
| 81 | } |
| 82 | } catch (IOException e) { |
| 83 | Log.w(TAG, "Exception backing up OBBs for " + packageName, e); |
| 84 | } finally { |
| 85 | // Send the EOD marker indicating that there is no more data |
| 86 | try { |
| 87 | FileOutputStream out = new FileOutputStream(outFd); |
| 88 | byte[] buf = new byte[4]; |
| 89 | out.write(buf); |
| 90 | } catch (IOException e) { |
| 91 | Log.e(TAG, "Unable to finalize obb backup stream!"); |
| 92 | } |
| 93 | |
| 94 | try { |
Christopher Tate | 11ae768 | 2015-03-24 18:48:10 -0700 | [diff] [blame] | 95 | callbackBinder.opComplete(token, 0); |
Christopher Tate | 46cc43c | 2013-02-19 14:08:59 -0800 | [diff] [blame] | 96 | } catch (RemoteException e) { |
| 97 | } |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | /* |
| 102 | * Restore an OBB file for the given package from the incoming stream |
| 103 | */ |
| 104 | @Override |
| 105 | public void restoreObbFile(String packageName, ParcelFileDescriptor data, |
| 106 | long fileSize, int type, String path, long mode, long mtime, |
| 107 | int token, IBackupManager callbackBinder) { |
| 108 | try { |
Jeff Sharkey | 7f392de | 2013-08-11 17:42:17 -0700 | [diff] [blame] | 109 | File outFile = Environment.buildExternalStorageAppObbDirs(packageName)[0]; |
Christopher Tate | 46cc43c | 2013-02-19 14:08:59 -0800 | [diff] [blame] | 110 | if (outFile != null) { |
| 111 | outFile = new File(outFile, path); |
| 112 | } |
| 113 | // outFile is null here if we couldn't get access to external storage, |
| 114 | // in which case restoreFile() will discard the data cleanly and let |
| 115 | // us proceed with the next file segment in the stream. We pass -1 |
| 116 | // for the file mode to suppress attempts to chmod() on shared storage. |
| 117 | FullBackup.restoreFile(data, fileSize, type, -1, mtime, outFile); |
| 118 | } catch (IOException e) { |
| 119 | Log.i(TAG, "Exception restoring OBB " + path, e); |
| 120 | } finally { |
| 121 | try { |
Christopher Tate | 11ae768 | 2015-03-24 18:48:10 -0700 | [diff] [blame] | 122 | callbackBinder.opComplete(token, 0); |
Christopher Tate | 46cc43c | 2013-02-19 14:08:59 -0800 | [diff] [blame] | 123 | } catch (RemoteException e) { |
| 124 | } |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | ArrayList<File> allFileContents(File rootDir) { |
| 129 | final ArrayList<File> files = new ArrayList<File>(); |
| 130 | final ArrayList<File> dirs = new ArrayList<File>(); |
| 131 | |
| 132 | dirs.add(rootDir); |
| 133 | while (!dirs.isEmpty()) { |
| 134 | File dir = dirs.remove(0); |
| 135 | File[] contents = dir.listFiles(); |
| 136 | if (contents != null) { |
| 137 | for (File f : contents) { |
| 138 | if (f.isDirectory()) dirs.add(f); |
| 139 | else if (f.isFile()) files.add(f); |
| 140 | } |
| 141 | } |
| 142 | } |
| 143 | return files; |
| 144 | } |
| 145 | }; |
| 146 | |
| 147 | @Override |
| 148 | public IBinder onBind(Intent intent) { |
| 149 | return mService.asBinder(); |
| 150 | } |
| 151 | } |