1/*
2 * Copyright (C) 2009 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
17package android.app;
18
19import android.app.backup.BackupAgent;
20import android.app.backup.BackupDataInput;
21import android.app.backup.BackupDataOutput;
22import android.app.backup.FileBackupHelper;
23import android.os.ParcelFileDescriptor;
24import android.util.Log;
25
26import java.io.File;
27import java.util.ArrayList;
28import java.util.LinkedList;
29
30/**
31 * Backs up an application's entire /data/data/<package>/... file system.  This
32 * class is used by the desktop full backup mechanism and is not intended for direct
33 * use by applications.
34 *
35 * {@hide}
36 */
37
38public class FullBackupAgent extends BackupAgent {
39    // !!! TODO: turn off debugging
40    private static final String TAG = "FullBackupAgent";
41    private static final boolean DEBUG = true;
42
43    @Override
44    public void onBackup(ParcelFileDescriptor oldState, BackupDataOutput data,
45            ParcelFileDescriptor newState) {
46        LinkedList<File> dirsToScan = new LinkedList<File>();
47        ArrayList<String> allFiles = new ArrayList<String>();
48
49        // build the list of files in the app's /data/data tree
50        dirsToScan.add(getFilesDir());
51        if (DEBUG) Log.v(TAG, "Backing up dir tree @ " + getFilesDir().getAbsolutePath() + " :");
52        while (dirsToScan.size() > 0) {
53            File dir = dirsToScan.removeFirst();
54            File[] contents = dir.listFiles();
55            if (contents != null) {
56                for (File f : contents) {
57                    if (f.isDirectory()) {
58                        dirsToScan.add(f);
59                    } else if (f.isFile()) {
60                        if (DEBUG) Log.v(TAG, "    " + f.getAbsolutePath());
61                        allFiles.add(f.getAbsolutePath());
62                    }
63                }
64            }
65        }
66
67        // That's the file set; now back it all up
68        FileBackupHelper helper = new FileBackupHelper(this,
69                allFiles.toArray(new String[allFiles.size()]));
70        helper.performBackup(oldState, data, newState);
71    }
72
73    @Override
74    public void onRestore(BackupDataInput data, int appVersionCode, ParcelFileDescriptor newState) {
75    }
76}
77