| /* |
| * 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.android.internal.telephony; |
| |
| import android.annotation.Nullable; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ResolveInfo; |
| import android.os.Binder; |
| import android.os.PersistableBundle; |
| import android.telephony.CarrierConfigManager; |
| import android.telephony.Rlog; |
| |
| import java.util.List; |
| |
| /** |
| * This is a basic utility class for common Carrier SMS Functions |
| */ |
| public class CarrierSmsUtils { |
| protected static final boolean VDBG = false; |
| protected static final String TAG = CarrierSmsUtils.class.getSimpleName(); |
| |
| private static final String CARRIER_IMS_PACKAGE_KEY = |
| CarrierConfigManager.KEY_CONFIG_IMS_PACKAGE_OVERRIDE_STRING; |
| |
| /** Return a Carrier-overridden IMS package, if it exists and is a CarrierSmsFilter |
| * |
| * @param context calling context |
| * @param phone object from telephony |
| * @param intent that should match a CarrierSmsFilter |
| * @return the name of the IMS CarrierService package |
| */ |
| @Nullable |
| public static String getCarrierImsPackageForIntent( |
| Context context, Phone phone, Intent intent) { |
| |
| String carrierImsPackage = getCarrierImsPackage(context, phone); |
| if (carrierImsPackage == null) { |
| if (VDBG) Rlog.v(TAG, "No CarrierImsPackage override found"); |
| return null; |
| } |
| |
| PackageManager packageManager = context.getPackageManager(); |
| List<ResolveInfo> receivers = packageManager.queryIntentServices(intent, 0); |
| for (ResolveInfo info : receivers) { |
| if (info.serviceInfo == null) { |
| Rlog.e(TAG, "Can't get service information from " + info); |
| continue; |
| } |
| |
| if (carrierImsPackage.equals(info.serviceInfo.packageName)) { |
| return carrierImsPackage; |
| } |
| } |
| return null; |
| } |
| |
| @Nullable |
| private static String getCarrierImsPackage(Context context, Phone phone) { |
| CarrierConfigManager cm = (CarrierConfigManager) context.getSystemService( |
| Context.CARRIER_CONFIG_SERVICE); |
| if (cm == null) { |
| Rlog.e(TAG, "Failed to retrieve CarrierConfigManager"); |
| return null; |
| } |
| |
| final long identity = Binder.clearCallingIdentity(); |
| try { |
| PersistableBundle config = cm.getConfigForSubId(phone.getSubId()); |
| if (config == null) { |
| if (VDBG) Rlog.v(TAG, "No CarrierConfig for subId:" + phone.getSubId()); |
| return null; |
| } |
| return config.getString(CARRIER_IMS_PACKAGE_KEY, null); |
| } finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| |
| private CarrierSmsUtils() {} |
| } |