Backup.java revision a312c03fd830c489ffc81fad0812826b093b73ee 
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
73        String arg;
74        while ((arg = nextArg()) != null) {
75            if (arg.startsWith("-")) {
76                if ("-apk".equals(arg)) {
77                    saveApks = true;
78                } else if ("-noapk".equals(arg)) {
79                    saveApks = false;
80                } else if ("-obb".equals(arg)) {
81                    saveObbs = true;
82                } else if ("-noobb".equals(arg)) {
83                    saveObbs = false;
84                } else if ("-shared".equals(arg)) {
85                    saveShared = true;
86                } else if ("-noshared".equals(arg)) {
87                    saveShared = false;
88                } else if ("-system".equals(arg)) {
89                    allIncludesSystem = true;
90                } else if ("-nosystem".equals(arg)) {
91                    allIncludesSystem = false;
92                } else if ("-widgets".equals(arg)) {
93                    doWidgets = true;
94                } else if ("-nowidgets".equals(arg)) {
95                    doWidgets = false;
96                } else if ("-all".equals(arg)) {
97                    doEverything = true;
98                } else {
99                    Log.w(TAG, "Unknown backup flag " + arg);
100                    continue;
101                }
102            } else {
103                // Not a flag; treat as a package name
104                packages.add(arg);
105            }
106        }
107
108        if (doEverything && packages.size() > 0) {
109            Log.w(TAG, "-all passed for backup along with specific package names");
110        }
111
112        if (!doEverything && !saveShared && packages.size() == 0) {
113            Log.e(TAG, "no backup packages supplied and neither -shared nor -all given");
114            return;
115        }
116
117        ParcelFileDescriptor fd = null;
118        try {
119            fd = ParcelFileDescriptor.adoptFd(socketFd);
120            String[] packArray = new String[packages.size()];
121            mBackupManager.fullBackup(fd, saveApks, saveObbs, saveShared, doWidgets,
122                    doEverything, allIncludesSystem, packages.toArray(packArray));
123        } catch (RemoteException e) {
124            Log.e(TAG, "Unable to invoke backup manager for backup");
125        } finally {
126            if (fd != null) {
127                try {
128                    fd.close();
129                } catch (IOException e) {}
130            }
131        }
132    }
133
134    private void doFullRestore(int socketFd) {
135        // No arguments to restore
136        ParcelFileDescriptor fd = null;
137        try {
138            fd = ParcelFileDescriptor.adoptFd(socketFd);
139            mBackupManager.fullRestore(fd);
140        } catch (RemoteException e) {
141            Log.e(TAG, "Unable to invoke backup manager for restore");
142        } finally {
143            if (fd != null) {
144                try {
145                    fd.close();
146                } catch (IOException e) {}
147            }
148        }
149    }
150
151    private String nextArg() {
152        if (mNextArg >= mArgs.length) {
153            return null;
154        }
155        String arg = mArgs[mNextArg];
156        mNextArg++;
157        return arg;
158    }
159}