| /* |
| * Copyright (C) 2021 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.imsserviceentitlement; |
| |
| import static android.telephony.TelephonyManager.SIM_STATE_LOADED; |
| |
| import static com.android.imsserviceentitlement.entitlement.EntitlementConfiguration.ClientBehavior.NEEDS_TO_RESET; |
| import static com.android.imsserviceentitlement.entitlement.EntitlementConfiguration.ClientBehavior.VALID_DURING_VALIDITY; |
| import static com.android.imsserviceentitlement.entitlement.EntitlementConfiguration.ClientBehavior.VALID_WITHOUT_DURATION; |
| import static com.android.imsserviceentitlement.utils.Executors.getAsyncExecutor; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.SharedPreferences; |
| import android.os.UserManager; |
| import android.provider.Settings; |
| import android.telephony.CarrierConfigManager; |
| import android.telephony.SubscriptionManager; |
| import android.util.Log; |
| |
| import androidx.annotation.VisibleForTesting; |
| import androidx.annotation.WorkerThread; |
| |
| import com.android.imsserviceentitlement.entitlement.EntitlementConfiguration; |
| import com.android.imsserviceentitlement.entitlement.EntitlementConfiguration.ClientBehavior; |
| import com.android.imsserviceentitlement.job.JobManager; |
| import com.android.imsserviceentitlement.utils.TelephonyUtils; |
| |
| /** Watches events and manages service entitlement polling. */ |
| public class ImsEntitlementReceiver extends BroadcastReceiver { |
| private static final String TAG = "IMSSE-ImsEntitlementReceiver"; |
| |
| /** |
| * Shared preference name for activation information, the key used in this file should append |
| * slot id if the value depended on carrier. |
| */ |
| private static final String PREFERENCE_ACTIVATION_INFO = "PREFERENCE_ACTIVATION_INFO"; |
| /** |
| * Shared preference key for last known subscription id of a SIM slot; default value {@link |
| * SubscriptionManager#INVALID_SUBSCRIPTION_ID}. |
| */ |
| private static final String KEY_LAST_SUB_ID = "last_sub_id_"; |
| /** Shared preference key for last boot count. */ |
| private static final String KEY_LAST_BOOT_COUNT = "last_boot_count_"; |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| int currentSubId = |
| intent.getIntExtra( |
| SubscriptionManager.EXTRA_SUBSCRIPTION_INDEX, |
| SubscriptionManager.INVALID_SUBSCRIPTION_ID); |
| int slotId = |
| intent.getIntExtra( |
| SubscriptionManager.EXTRA_SLOT_INDEX, |
| SubscriptionManager.INVALID_SIM_SLOT_INDEX); |
| Dependencies dependencies = createDependency(context, currentSubId); |
| if (!dependencies.userManager.isSystemUser() |
| || !SubscriptionManager.isValidSubscriptionId(currentSubId) |
| || dependencies.telephonyUtils.getSimApplicationState() != SIM_STATE_LOADED |
| || !TelephonyUtils.isImsProvisioningRequired(context, currentSubId)) { |
| return; |
| } |
| |
| String action = intent.getAction(); |
| if (CarrierConfigManager.ACTION_CARRIER_CONFIG_CHANGED.equals(action)) { |
| final PendingResult result = goAsync(); |
| getAsyncExecutor().execute( |
| () -> handleCarrierConfigChanged( |
| context, currentSubId, slotId, dependencies.jobManager, result)); |
| } |
| } |
| |
| /** |
| * Handles the event of SIM change and device boot up while receiving {@link |
| * CarrierConfigManager#ACTION_CARRIER_CONFIG_CHANGED}. |
| */ |
| @WorkerThread |
| private void handleCarrierConfigChanged( |
| Context context, int currentSubId, int slotId, JobManager jobManager, |
| PendingResult result) { |
| boolean shouldQuery = false; |
| |
| // Handle device boot up. |
| if (isBootUp(context, slotId)) { |
| ClientBehavior clientBehavior = |
| new EntitlementConfiguration(context, currentSubId).entitlementValidation(); |
| Log.d(TAG, "Device boot up, clientBehavior=" + clientBehavior); |
| if (clientBehavior == VALID_DURING_VALIDITY |
| || clientBehavior == VALID_WITHOUT_DURATION |
| || clientBehavior == NEEDS_TO_RESET) { |
| shouldQuery = true; |
| } |
| } |
| |
| // Handle SIM changed. |
| int lastSubId = getAndSetSubId(context, currentSubId, slotId); |
| if (currentSubId != lastSubId) { |
| Log.d(TAG, |
| "SubId for slot " + slotId + " changed: " + lastSubId + " -> " + currentSubId); |
| if (SubscriptionManager.isValidSubscriptionId(lastSubId)) { |
| new EntitlementConfiguration(context, lastSubId).reset(); |
| } |
| shouldQuery = true; |
| } |
| |
| if (shouldQuery) { |
| jobManager.queryEntitlementStatusOnceNetworkReady(); |
| } |
| |
| if (result != null) { |
| result.finish(); |
| } |
| } |
| |
| /** |
| * Returns {@code true} if current boot count greater than previous one. Saves the latest boot |
| * count into shared preference. |
| */ |
| @VisibleForTesting |
| boolean isBootUp(Context context, int slotId) { |
| SharedPreferences preferences = |
| context.getSharedPreferences(PREFERENCE_ACTIVATION_INFO, Context.MODE_PRIVATE); |
| int lastBootCount = preferences.getInt(KEY_LAST_BOOT_COUNT + slotId, 0); |
| int currentBootCount = |
| Settings.Global.getInt( |
| context.getContentResolver(), Settings.Global.BOOT_COUNT, /* def= */ -1); |
| preferences.edit().putInt(KEY_LAST_BOOT_COUNT + slotId, currentBootCount).apply(); |
| |
| return currentBootCount != lastBootCount; |
| } |
| |
| private int getAndSetSubId(Context context, int currentSubId, int slotId) { |
| SharedPreferences preferences = |
| context.getSharedPreferences(PREFERENCE_ACTIVATION_INFO, Context.MODE_PRIVATE); |
| int lastSubId = preferences.getInt( |
| KEY_LAST_SUB_ID + slotId, SubscriptionManager.INVALID_SUBSCRIPTION_ID); |
| preferences.edit().putInt(KEY_LAST_SUB_ID + slotId, currentSubId).apply(); |
| return lastSubId; |
| } |
| |
| /** Returns initialized dependencies */ |
| @VisibleForTesting |
| Dependencies createDependency(Context context, int subId) { |
| // Wrap return value |
| Dependencies ret = new Dependencies(); |
| ret.telephonyUtils = new TelephonyUtils(context, subId); |
| ret.userManager = context.getSystemService(UserManager.class); |
| ret.jobManager = |
| JobManager.getInstance(context, ImsEntitlementPollingService.COMPONENT_NAME, subId); |
| return ret; |
| } |
| |
| /** A collection of dependency objects */ |
| protected static class Dependencies { |
| public TelephonyUtils telephonyUtils; |
| public UserManager userManager; |
| public JobManager jobManager; |
| } |
| } |