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      1 /*
      2  * Copyright (C) 2017 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 
     17 package com.android.dialer.app.voicemail;
     18 
     19 import android.annotation.TargetApi;
     20 import android.app.PendingIntent;
     21 import android.content.BroadcastReceiver;
     22 import android.content.Context;
     23 import android.content.Intent;
     24 import android.os.Build;
     25 import android.os.Build.VERSION_CODES;
     26 import android.preference.PreferenceManager;
     27 import android.support.v4.os.BuildCompat;
     28 import android.support.v4.os.UserManagerCompat;
     29 import android.telecom.PhoneAccountHandle;
     30 import android.telephony.TelephonyManager;
     31 import com.android.dialer.app.calllog.LegacyVoicemailNotifier;
     32 import com.android.dialer.common.Assert;
     33 import com.android.dialer.common.LogUtil;
     34 import com.android.dialer.common.PerAccountSharedPreferences;
     35 import com.android.voicemail.VoicemailComponent;
     36 
     37 /**
     38  * Receives {@link TelephonyManager#ACTION_SHOW_VOICEMAIL_NOTIFICATION}, and forwards to {@link
     39  * LegacyVoicemailNotifier}. Will ignore the notification if the account has visual voicemail.
     40  * Legacy voicemail is the traditional, non-visual, dial-in voicemail.
     41  */
     42 @TargetApi(VERSION_CODES.O)
     43 public class LegacyVoicemailNotificationReceiver extends BroadcastReceiver {
     44 
     45   private static final String LEGACY_VOICEMAIL_COUNT = "legacy_voicemail_count";
     46 
     47   /**
     48    * Hidden extra for {@link TelephonyManager#ACTION_SHOW_VOICEMAIL_NOTIFICATION} for whether the
     49    * notification is just a refresh or for a new voicemail. The phone should not play a ringtone or
     50    * vibrate during a refresh if the notification is already showing.
     51    *
     52    * <p>TODO(b/62202833): make public
     53    */
     54   private static final String EXTRA_IS_REFRESH = "is_refresh";
     55 
     56   @Override
     57   public void onReceive(Context context, Intent intent) {
     58     LogUtil.i(
     59         "LegacyVoicemailNotificationReceiver.onReceive", "received legacy voicemail notification");
     60     if (!BuildCompat.isAtLeastO()) {
     61       LogUtil.e(
     62           "LegacyVoicemailNotificationReceiver.onReceive",
     63           "SDK not finalized: SDK_INT="
     64               + Build.VERSION.SDK_INT
     65               + ", PREVIEW_SDK_INT="
     66               + Build.VERSION.PREVIEW_SDK_INT
     67               + ", RELEASE="
     68               + Build.VERSION.RELEASE);
     69       return;
     70     }
     71 
     72     PhoneAccountHandle phoneAccountHandle =
     73         Assert.isNotNull(intent.getParcelableExtra(TelephonyManager.EXTRA_PHONE_ACCOUNT_HANDLE));
     74     int count = intent.getIntExtra(TelephonyManager.EXTRA_NOTIFICATION_COUNT, -1);
     75 
     76     if (!hasVoicemailCountChanged(context, phoneAccountHandle, count)) {
     77       LogUtil.i(
     78           "LegacyVoicemailNotificationReceiver.onReceive",
     79           "voicemail count hasn't changed, ignoring");
     80       return;
     81     }
     82 
     83     if (count == -1) {
     84       // Carrier might not send voicemail count. Missing extra means there are unknown numbers of
     85       // voicemails (One or more). Treat it as 1 so the generic version will be shown. ("Voicemail"
     86       // instead of "X voicemails")
     87       count = 1;
     88     }
     89 
     90     if (count == 0) {
     91       LogUtil.i("LegacyVoicemailNotificationReceiver.onReceive", "clearing notification");
     92       LegacyVoicemailNotifier.cancelNotification(context);
     93       return;
     94     }
     95 
     96     if (VoicemailComponent.get(context)
     97         .getVoicemailClient()
     98         .isActivated(context, phoneAccountHandle)) {
     99       LogUtil.i(
    100           "LegacyVoicemailNotificationReceiver.onReceive",
    101           "visual voicemail is activated, ignoring notification");
    102       return;
    103     }
    104 
    105     String voicemailNumber = intent.getStringExtra(TelephonyManager.EXTRA_VOICEMAIL_NUMBER);
    106     PendingIntent callVoicemailIntent =
    107         intent.getParcelableExtra(TelephonyManager.EXTRA_CALL_VOICEMAIL_INTENT);
    108     PendingIntent voicemailSettingIntent =
    109         intent.getParcelableExtra(TelephonyManager.EXTRA_LAUNCH_VOICEMAIL_SETTINGS_INTENT);
    110 
    111     LogUtil.i("LegacyVoicemailNotificationReceiver.onReceive", "sending notification");
    112     LegacyVoicemailNotifier.showNotification(
    113         context,
    114         phoneAccountHandle,
    115         count,
    116         voicemailNumber,
    117         callVoicemailIntent,
    118         voicemailSettingIntent,
    119         intent.getBooleanExtra(EXTRA_IS_REFRESH, false));
    120   }
    121 
    122   private static boolean hasVoicemailCountChanged(
    123       Context context, PhoneAccountHandle phoneAccountHandle, int newCount) {
    124     // Need credential encrypted storage to access preferences.
    125     if (!UserManagerCompat.isUserUnlocked(context)) {
    126       LogUtil.i(
    127           "LegacyVoicemailNotificationReceiver.onReceive",
    128           "User locked, bypassing voicemail count check");
    129       return true;
    130     }
    131 
    132     if (newCount == -1) {
    133       // Carrier does not report voicemail count
    134       return true;
    135     }
    136 
    137     PerAccountSharedPreferences preferences =
    138         new PerAccountSharedPreferences(
    139             context, phoneAccountHandle, PreferenceManager.getDefaultSharedPreferences(context));
    140     // Carriers may send multiple notifications for the same voicemail.
    141     if (newCount != 0 && newCount == preferences.getInt(LEGACY_VOICEMAIL_COUNT, -1)) {
    142       return false;
    143     }
    144     preferences.edit().putInt(LEGACY_VOICEMAIL_COUNT, newCount).apply();
    145     return true;
    146   }
    147 }
    148