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ResetPasswordService.java
/* * Copyright (C) 2017 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.afwsamples.testdpc.policy.resetpassword; import android.annotation.TargetApi; import android.app.Notification; import android.app.NotificationChannel; import android.app.NotificationManager; import android.app.PendingIntent; import android.app.Service; import android.app.admin.DevicePolicyManager; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Build; import android.os.IBinder; import android.os.UserManager; import android.support.annotation.Nullable; import android.util.Log; import com.afwsamples.testdpc.DeviceAdminReceiver; import com.afwsamples.testdpc.R; import static android.content.Intent.ACTION_USER_UNLOCKED; @TargetApi(Build.VERSION_CODES.O) public class ResetPasswordService extends Service { private static final String TAG = "ResetPasswordService"; private static final int NOTIFICATION_TAP_TO_RESET = 1; private static final int NOTIFICATION_RESET_RESULT = 2; private static final int NOTIFICATION_FOREGROUND = 3; private static final String NOTIFICATION_CHANNEL = "reset-password-notification"; private static final String ACTION_RESET_PASSWORD = "com.afwsamples.testdpc.RESET_PASSWORD"; private DevicePolicyManager mDpm; private NotificationManager mNm; public static class LockedBootCompletedReceiver extends BroadcastReceiver { private static final String TAG = "BootCompletedReceiver"; @Override public void onReceive(Context context, Intent intent) { Log.d(TAG, "onReceive: " + intent.toString()); Intent serviceIntent = new Intent(context, ResetPasswordService.class); serviceIntent.setAction(intent.getAction()); context.startForegroundService(serviceIntent); } } private BroadcastReceiver receiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { Log.d(TAG, "onReceive: " + intent.toString()); if (ACTION_USER_UNLOCKED.equals(intent.getAction())) { ResetPasswordService.this.dismissNotification(); ResetPasswordService.this.unregisterReceiver(receiver); ResetPasswordService.this.stopSelf(); } else if (ACTION_RESET_PASSWORD.equals(intent.getAction())) { ResetPasswordService.this.doResetPassword(); } } }; @Override public void onCreate() { super.onCreate(); mDpm = getSystemService(DevicePolicyManager.class); mNm = getSystemService(NotificationManager.class); } @Override public int onStartCommand(Intent intent, int flags, int startId) { createNotificationChannel(); startForeground(); if (getSystemService(UserManager.class).isUserUnlocked() || getActiveResetPasswordToken() == null) { stopSelf(); mNm.cancel(NOTIFICATION_FOREGROUND); return START_NOT_STICKY; } IntentFilter filter = new IntentFilter(); filter.addAction(ACTION_USER_UNLOCKED); filter.addAction(ACTION_RESET_PASSWORD); registerReceiver(receiver, filter); showNotification(); return START_REDELIVER_INTENT; } private void createNotificationChannel() { NotificationChannel mChannel = new NotificationChannel(NOTIFICATION_CHANNEL, getString(R.string.app_name), NotificationManager.IMPORTANCE_DEFAULT); mNm.createNotificationChannel(mChannel); } private void startForeground() { Notification notification = new Notification.Builder(this) .setContentTitle(getString(R.string.app_name)) .setContentText(getString(R.string.reset_password_foreground_notification)) .setSmallIcon(R.drawable.ic_launcher) .setChannelId(NOTIFICATION_CHANNEL) .build(); startForeground(NOTIFICATION_FOREGROUND, notification); } @Nullable @Override public IBinder onBind(Intent intent) { return null; } private byte[] getActiveResetPasswordToken() { byte[] token = ResetPasswordWithTokenFragment.loadPasswordResetTokenFromPreference(this); if (token == null) { return null; } if (!mDpm.isResetPasswordTokenActive(DeviceAdminReceiver.getComponentName(this))) { Log.i(TAG, "Token exists but is not activated."); return null; } return token; } private void doResetPassword() { final String password = "1234"; byte[] token = getActiveResetPasswordToken(); boolean result; if (token != null) { result = mDpm.resetPasswordWithToken(DeviceAdminReceiver.getComponentName(this), password, token, 0); } else { Log.e(TAG, "Cannot reset password without token"); result = false; } Notification.Builder builder = new Notification.Builder(this) .setContentTitle(getString(R.string.app_name)) .setSmallIcon(R.drawable.ic_launcher) .setChannelId(NOTIFICATION_CHANNEL); if (result) { builder.setContentText(getString(R.string.reset_password_with_token_succeed, password)); builder.setOngoing(true); } else { builder.setContentText(getString(R.string.reset_password_with_token_failed)); } mNm.notify(NOTIFICATION_RESET_RESULT, builder.build()); } private void showNotification() { PendingIntent intent = PendingIntent.getBroadcast(this, 0, new Intent(ACTION_RESET_PASSWORD), 0); Notification notification = new Notification.Builder(this) .setContentTitle(getString(R.string.app_name)) .setContentText(getString(R.string.reset_password_notification)) .setContentIntent(intent) .setDeleteIntent(intent) .setSmallIcon(R.drawable.ic_launcher) .setChannelId(NOTIFICATION_CHANNEL) .build(); mNm.notify(NOTIFICATION_TAP_TO_RESET, notification); } private void dismissNotification() { mNm.cancel(NOTIFICATION_TAP_TO_RESET); mNm.cancel(NOTIFICATION_RESET_RESULT); } }