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}