Home | History | Annotate | Download | only in vvm 
      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.phone.vvm;
     18 
     19 import android.content.BroadcastReceiver;
     20 import android.content.Context;
     21 import android.content.Intent;
     22 import android.content.IntentFilter;
     23 import android.os.PersistableBundle;
     24 import android.telecom.PhoneAccountHandle;
     25 import android.telecom.TelecomManager;
     26 import android.telephony.CarrierConfigManager;
     27 import android.telephony.TelephonyManager;
     28 import android.telephony.VisualVoicemailService;
     29 import android.text.TextUtils;
     30 import android.util.ArraySet;
     31 
     32 import java.util.Collections;
     33 import java.util.Set;
     34 
     35 /**
     36  * Receives {@link Intent#ACTION_PACKAGE_ADDED} for the system dialer to inform it a carrier visual
     37  * voicemail app has been installed. ACTION_PACKAGE_ADDED requires the receiver process to be
     38  * running so the system dialer cannot receive it itself.
     39  *
     40  * Carrier VVM apps are usually regular apps, not a
     41  * {@link VisualVoicemailService} nor {@link android.service.carrier.CarrierMessagingService} so it
     42  * will not take precedence over the system dialer. The system dialer should disable VVM it self
     43  * to let the carrier app take over since the installation is an explicit user interaction. Carrier
     44  * customer support might also ask the user to switch to their app if they believe there's any
     45  * issue in the system dialer so this transition should not require more user interaction.
     46  *
     47  * @see CarrierConfigManager#KEY_CARRIER_VVM_PACKAGE_NAME_STRING_ARRAY
     48  */
     49 public class CarrierVvmPackageInstalledReceiver extends BroadcastReceiver {
     50 
     51     private static final String TAG = "VvmPkgInstalledRcvr";
     52 
     53     /**
     54      * Hidden broadcast to the system dialer
     55      */
     56     private static final String ACTION_CARRIER_VVM_PACKAGE_INSTALLED =
     57             "com.android.internal.telephony.CARRIER_VVM_PACKAGE_INSTALLED";
     58 
     59     public void register(Context context) {
     60         IntentFilter intentFilter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
     61         intentFilter.addDataScheme("package");
     62         context.registerReceiver(this, intentFilter);
     63     }
     64 
     65     @Override
     66     public void onReceive(Context context, Intent intent) {
     67         if (intent.getData() == null) {
     68             return;
     69         }
     70         String packageName = intent.getData().getSchemeSpecificPart();
     71         if (packageName == null) {
     72             return;
     73         }
     74 
     75         TelecomManager telecomManager = context.getSystemService(TelecomManager.class);
     76         String systemDialer = telecomManager.getSystemDialerPackage();
     77         TelephonyManager telephonyManager = context.getSystemService(TelephonyManager.class);
     78         for (PhoneAccountHandle phoneAccountHandle : telecomManager.getCallCapablePhoneAccounts()) {
     79             TelephonyManager pinnedTelephonyManager = telephonyManager
     80                     .createForPhoneAccountHandle(phoneAccountHandle);
     81 
     82             if (pinnedTelephonyManager == null) {
     83                 VvmLog.e(TAG, "cannot create TelephonyManager from " + phoneAccountHandle);
     84                 continue;
     85             }
     86 
     87             if (!getCarrierVvmPackages(telephonyManager).contains(packageName)) {
     88                 continue;
     89             }
     90 
     91             VvmLog.i(TAG, "Carrier VVM app " + packageName + " installed");
     92 
     93             String vvmPackage = pinnedTelephonyManager.getVisualVoicemailPackageName();
     94             if (!TextUtils.equals(vvmPackage, systemDialer)) {
     95                 // Non system dialer do not need to prioritize carrier vvm app.
     96                 VvmLog.i(TAG, "non system dialer " + vvmPackage + " ignored");
     97                 continue;
     98             }
     99 
    100             VvmLog.i(TAG, "sending broadcast to " + vvmPackage);
    101             Intent broadcast = new Intent(ACTION_CARRIER_VVM_PACKAGE_INSTALLED);
    102             broadcast.putExtra(Intent.EXTRA_PACKAGE_NAME, packageName);
    103             broadcast.setPackage(vvmPackage);
    104             context.sendBroadcast(broadcast);
    105         }
    106     }
    107 
    108     private static Set<String> getCarrierVvmPackages(TelephonyManager pinnedTelephonyManager) {
    109         Set<String> carrierPackages = new ArraySet<>();
    110 
    111         PersistableBundle config = pinnedTelephonyManager.getCarrierConfig();
    112         String singlePackage = config
    113                 .getString(CarrierConfigManager.KEY_CARRIER_VVM_PACKAGE_NAME_STRING);
    114         if (!TextUtils.isEmpty(singlePackage)) {
    115             carrierPackages.add(singlePackage);
    116         }
    117         String[] arrayPackages = config
    118                 .getStringArray(CarrierConfigManager.KEY_CARRIER_VVM_PACKAGE_NAME_STRING_ARRAY);
    119         if (arrayPackages != null) {
    120             Collections.addAll(carrierPackages, arrayPackages);
    121         }
    122 
    123         return carrierPackages;
    124     }
    125 }
    126