| /* |
| * Copyright (C) 2014 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.mms.service; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.res.Configuration; |
| import android.telephony.SubscriptionInfo; |
| import android.telephony.SubscriptionManager; |
| import android.telephony.SubscriptionManager.OnSubscriptionsChangedListener; |
| import android.util.ArrayMap; |
| import android.util.Log; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| import com.android.internal.telephony.IccCardConstants; |
| |
| /** |
| * This class manages cached copies of all the MMS configuration for each subscription ID. |
| * A subscription ID loosely corresponds to a particular SIM. See the |
| * {@link android.telephony.SubscriptionManager} for more details. |
| * |
| */ |
| public class MmsConfigManager { |
| private static final String TAG = MmsService.TAG; |
| |
| private static volatile MmsConfigManager sInstance = new MmsConfigManager(); |
| |
| public static MmsConfigManager getInstance() { |
| return sInstance; |
| } |
| |
| // Map the various subIds to their corresponding MmsConfigs. |
| private final Map<Integer, MmsConfig> mSubIdConfigMap = new ArrayMap<Integer, MmsConfig>(); |
| private Context mContext; |
| private SubscriptionManager mSubscriptionManager; |
| |
| /** |
| * This receiver listens for changes made to SubInfoRecords and for a broadcast telling us |
| * the TelephonyManager has loaded the information needed in order to get the mcc/mnc's for |
| * each subscription Id. When either of these broadcasts are received, we rebuild the |
| * MmsConfig table. |
| * |
| */ |
| private final BroadcastReceiver mReceiver = new BroadcastReceiver() { |
| public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| Log.i(TAG, "mReceiver action: " + action); |
| if (action.equals(IccCardConstants.INTENT_VALUE_ICC_LOADED)) { |
| loadInBackground(); |
| } |
| } |
| }; |
| |
| private final OnSubscriptionsChangedListener mOnSubscriptionsChangedListener = |
| new OnSubscriptionsChangedListener() { |
| @Override |
| public void onSubscriptionsChanged() { |
| loadInBackground(); |
| } |
| }; |
| |
| |
| public void init(final Context context) { |
| mContext = context; |
| mSubscriptionManager = SubscriptionManager.from(context); |
| |
| // TODO: When this object "finishes" we should unregister. |
| IntentFilter intentFilterLoaded = |
| new IntentFilter(IccCardConstants.INTENT_VALUE_ICC_LOADED); |
| context.registerReceiver(mReceiver, intentFilterLoaded); |
| |
| // TODO: When this object "finishes" we should unregister by invoking |
| // SubscriptionManager.getInstance(mContext).unregister(mOnSubscriptionsChangedListener); |
| // This is not strictly necessary because it will be unregistered if the |
| // notification fails but it is good form. |
| |
| // Register for SubscriptionInfo list changes which is guaranteed |
| // to invoke onSubscriptionsChanged the first time. |
| SubscriptionManager.from(mContext).addOnSubscriptionsChangedListener( |
| mOnSubscriptionsChangedListener); |
| } |
| |
| private void loadInBackground() { |
| // TODO (ywen) - AsyncTask to avoid creating a new thread? |
| new Thread() { |
| @Override |
| public void run() { |
| Configuration configuration = mContext.getResources().getConfiguration(); |
| // Always put the mnc/mcc in the log so we can tell which mms_config.xml |
| // was loaded. |
| Log.i(TAG, "MmsConfigManager.loadInBackground(): mcc/mnc: " + |
| configuration.mcc + "/" + configuration.mnc); |
| load(mContext); |
| } |
| }.start(); |
| } |
| |
| /** |
| * Find and return the MmsConfig for a particular subscription id. |
| * |
| * @param subId Subscription id of the desired MmsConfig |
| * @return MmsConfig for the particular subscription id. This function can return null if |
| * the MmsConfig cannot be found or if this function is called before the |
| * TelephonyManager has setup the SIMs or if loadInBackground is still spawning a |
| * thread after a recent LISTEN_SUBSCRIPTION_INFO_LIST_CHANGED event. |
| */ |
| public MmsConfig getMmsConfigBySubId(int subId) { |
| MmsConfig mmsConfig; |
| synchronized(mSubIdConfigMap) { |
| mmsConfig = mSubIdConfigMap.get(subId); |
| } |
| Log.i(TAG, "getMmsConfigBySubId -- for sub: " + subId + " mmsConfig: " + mmsConfig); |
| return mmsConfig; |
| } |
| |
| /** |
| * This function goes through all the activated subscription ids (the actual SIMs in the |
| * device), builds a context with that SIM's mcc/mnc and loads the appropriate mms_config.xml |
| * file via the ResourceManager. With single-SIM devices, there will be a single subId. |
| * |
| */ |
| private void load(Context context) { |
| List<SubscriptionInfo> subs = mSubscriptionManager.getActiveSubscriptionInfoList(); |
| if (subs == null || subs.size() < 1) { |
| Log.e(TAG, "MmsConfigManager.load -- empty getActiveSubInfoList"); |
| return; |
| } |
| // Load all the mms_config.xml files in a separate map and then swap with the |
| // real map at the end so we don't block anyone sync'd on the real map. |
| final Map<Integer, MmsConfig> newConfigMap = new ArrayMap<Integer, MmsConfig>(); |
| for (SubscriptionInfo sub : subs) { |
| Configuration configuration = new Configuration(); |
| if (sub.getMcc() == 0 && sub.getMnc() == 0) { |
| Configuration config = mContext.getResources().getConfiguration(); |
| configuration.mcc = config.mcc; |
| configuration.mnc = config.mnc; |
| Log.i(TAG, "MmsConfigManager.load -- no mcc/mnc for sub: " + sub + |
| " using mcc/mnc from main context: " + configuration.mcc + "/" + |
| configuration.mnc); |
| } else { |
| Log.i(TAG, "MmsConfigManager.load -- mcc/mnc for sub: " + sub); |
| |
| configuration.mcc = sub.getMcc(); |
| configuration.mnc = sub.getMnc(); |
| } |
| Context subContext = context.createConfigurationContext(configuration); |
| |
| int subId = sub.getSubscriptionId(); |
| newConfigMap.put(subId, new MmsConfig(subContext, subId)); |
| } |
| synchronized(mSubIdConfigMap) { |
| mSubIdConfigMap.clear(); |
| mSubIdConfigMap.putAll(newConfigMap); |
| } |
| } |
| |
| } |