CryptKeeper.java revision 8fd5bc9e6ff0d02012df670a6bf4bcdaf903c09d 
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.settings;
18
19import com.android.internal.widget.PasswordEntryKeyboardHelper;
20import com.android.internal.widget.PasswordEntryKeyboardView;
21
22import android.app.Activity;
23import android.app.StatusBarManager;
24import android.content.ComponentName;
25import android.content.Context;
26import android.content.pm.PackageManager;
27import android.inputmethodservice.KeyboardView;
28import android.os.Bundle;
29import android.os.IBinder;
30import android.os.ServiceManager;
31import android.os.SystemProperties;
32import android.os.storage.IMountService;
33import android.text.format.DateFormat;
34import android.util.Log;
35import android.view.KeyEvent;
36import android.view.inputmethod.EditorInfo;
37import android.widget.TextView;
38
39import java.util.Date;
40
41public class CryptKeeper extends Activity implements TextView.OnEditorActionListener {
42    private static final String DECRYPT_STATE = "trigger_restart_framework";
43
44    @Override
45    public void onCreate(Bundle savedInstanceState) {
46        super.onCreate(savedInstanceState);
47        setContentView(R.layout.crypt_keeper);
48
49        String state = SystemProperties.get("vold.decrypt");
50        if ("".equals(state) || DECRYPT_STATE.equals(state)) {
51            PackageManager pm = getPackageManager();
52            ComponentName name = new ComponentName(this, CryptKeeper.class);
53            pm.setComponentEnabledSetting(name, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, 0);
54            return;
55        }
56
57        TextView passwordEntry = (TextView) findViewById(R.id.passwordEntry);
58        passwordEntry.setOnEditorActionListener(this);
59
60        KeyboardView keyboardView = (PasswordEntryKeyboardView) findViewById(R.id.keyboard);
61
62        PasswordEntryKeyboardHelper keyboardHelper = new PasswordEntryKeyboardHelper(this,
63                keyboardView, passwordEntry, false);
64        keyboardHelper.setKeyboardMode(PasswordEntryKeyboardHelper.KEYBOARD_MODE_ALPHA);
65
66
67        passwordEntry.setCompoundDrawablesWithIntrinsicBounds(android.R.drawable.ic_lock_idle_lock,
68                0, 0, 0);
69
70        String dateFormatString = getString(com.android.internal.R.string.full_wday_month_day_no_year);
71        TextView date = (TextView) findViewById(R.id.date);
72        date.setText(DateFormat.format(dateFormatString, new Date()));
73
74        // Disable the status bar
75        StatusBarManager sbm = (StatusBarManager) getSystemService(Context.STATUS_BAR_SERVICE);
76        sbm.disable(StatusBarManager.DISABLE_EXPAND | StatusBarManager.DISABLE_NOTIFICATION_ICONS
77                | StatusBarManager.DISABLE_NOTIFICATION_ALERTS
78                | StatusBarManager.DISABLE_SYSTEM_INFO | StatusBarManager.DISABLE_NAVIGATION);
79    }
80
81    private IMountService getMountService() {
82        IBinder service = ServiceManager.getService("mount");
83        if (service != null) {
84            return IMountService.Stub.asInterface(service);
85        }
86        return null;
87    }
88
89    @Override
90    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
91        if (actionId == EditorInfo.IME_NULL) {
92            // Get the password
93            String password = v.getText().toString();
94
95            // Now that we have the password clear the password field.
96            v.setText(null);
97
98            IMountService service = getMountService();
99            try {
100                service.decryptStorage(password);
101
102                // For now the only way to get here is for the password to be
103                // wrong.
104
105                TextView tv = (TextView) findViewById(R.id.status);
106                tv.setText(R.string.try_again);
107
108            } catch (Exception e) {
109                Log.e("CryptKeeper", "Error while decrypting...", e);
110            }
111
112            return true;
113        }
114        return false;
115    }
116}