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
17package com.android.commands.bu;
18
19import android.app.backup.IBackupManager;
20import android.os.ParcelFileDescriptor;
21import android.os.RemoteException;
22import android.os.ServiceManager;
23import android.system.OsConstants;
24import android.util.Log;
25
26import java.io.IOException;
27import java.util.ArrayList;
28
29public final class Backup {
30    static final String TAG = "bu";
31
32    static String[] mArgs;
33    int mNextArg;
34    IBackupManager mBackupManager;
35
36    public static void main(String[] args) {
37        Log.d(TAG, "Beginning: " + args[0]);
38        mArgs = args;
39        try {
40            new Backup().run();
41        } catch (Exception e) {
42            Log.e(TAG, "Error running backup/restore", e);
43        }
44        Log.d(TAG, "Finished.");
45    }
46
47    public void run() {
48        mBackupManager = IBackupManager.Stub.asInterface(ServiceManager.getService("backup"));
49        if (mBackupManager == null) {
50            Log.e(TAG, "Can't obtain Backup Manager binder");
51            return;
52        }
53
54        String arg = nextArg();
55        if (arg.equals("backup")) {
56            doFullBackup(OsConstants.STDOUT_FILENO);
57        } else if (arg.equals("restore")) {
58            doFullRestore(OsConstants.STDIN_FILENO);
59        } else {
60            Log.e(TAG, "Invalid operation '" + arg + "'");
61        }
62    }
63
64    private void doFullBackup(int socketFd) {
65        ArrayList<String> packages = new ArrayList<String>();
66        boolean saveApks = false;
67        boolean saveObbs = false;
68        boolean saveShared = false;
69        boolean doEverything = false;
70        boolean doWidgets = false;
71        boolean allIncludesSystem = true;
72        boolean doCompress = true;
73
74        String arg;
75        while ((arg = nextArg()) != null) {
76            if (arg.startsWith("-")) {
77                if ("-apk".equals(arg)) {
78                    saveApks = true;
79                } else if ("-noapk".equals(arg)) {
80                    saveApks = false;
81                } else if ("-obb".equals(arg)) {
82                    saveObbs = true;
83                } else if ("-noobb".equals(arg)) {
84                    saveObbs = false;
85                } else if ("-shared".equals(arg)) {
86                    saveShared = true;
87                } else if ("-noshared".equals(arg)) {
88                    saveShared = false;
89                } else if ("-system".equals(arg)) {
90                    allIncludesSystem = true;
91                } else if ("-nosystem".equals(arg)) {
92                    allIncludesSystem = false;
93                } else if ("-widgets".equals(arg)) {
94                    doWidgets = true;
95                } else if ("-nowidgets".equals(arg)) {
96                    doWidgets = false;
97                } else if ("-all".equals(arg)) {
98                    doEverything = true;
99                } else if ("-compress".equals(arg)) {
100                    doCompress = true;
101                } else if ("-nocompress".equals(arg)) {
102                    doCompress = false;
103                } else {
104                    Log.w(TAG, "Unknown backup flag " + arg);
105                    continue;
106                }
107            } else {
108                // Not a flag; treat as a package name
109                packages.add(arg);
110            }
111        }
112
113        if (doEverything && packages.size() > 0) {
114            Log.w(TAG, "-all passed for backup along with specific package names");
115        }
116
117        if (!doEverything && !saveShared && packages.size() == 0) {
118            Log.e(TAG, "no backup packages supplied and neither -shared nor -all given");
119            return;
120        }
121
122        ParcelFileDescriptor fd = null;
123        try {
124            fd = ParcelFileDescriptor.adoptFd(socketFd);
125            String[] packArray = new String[packages.size()];
126            mBackupManager.fullBackup(fd, saveApks, saveObbs, saveShared, doWidgets,
127                    doEverything, allIncludesSystem, doCompress, packages.toArray(packArray));
128        } catch (RemoteException e) {
129            Log.e(TAG, "Unable to invoke backup manager for backup");
130        } finally {
131            if (fd != null) {
132                try {
133                    fd.close();
134                } catch (IOException e) {}
135            }
136        }
137    }
138
139    private void doFullRestore(int socketFd) {
140        // No arguments to restore
141        ParcelFileDescriptor fd = null;
142        try {
143            fd = ParcelFileDescriptor.adoptFd(socketFd);
144            mBackupManager.fullRestore(fd);
145        } catch (RemoteException e) {
146            Log.e(TAG, "Unable to invoke backup manager for restore");
147        } finally {
148            if (fd != null) {
149                try {
150                    fd.close();
151                } catch (IOException e) {}
152            }
153        }
154    }
155
156    private String nextArg() {
157        if (mNextArg >= mArgs.length) {
158            return null;
159        }
160        String arg = mArgs[mNextArg];
161        mNextArg++;
162        return arg;
163    }
164}