| /* |
| * 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.car; |
| |
| import android.app.ActivityManager; |
| import android.bluetooth.BluetoothA2dpSink; |
| import android.bluetooth.BluetoothAdapter; |
| import android.bluetooth.BluetoothDevice; |
| import android.bluetooth.BluetoothHeadsetClient; |
| import android.bluetooth.BluetoothMapClient; |
| import android.bluetooth.BluetoothPbapClient; |
| import android.bluetooth.BluetoothProfile; |
| import android.bluetooth.BluetoothUuid; |
| import android.car.hardware.CarPropertyValue; |
| import android.car.hardware.CarSensorEvent; |
| import android.car.hardware.CarSensorManager; |
| import android.car.hardware.ICarSensorEventListener; |
| import android.car.hardware.cabin.CarCabinManager; |
| import android.car.hardware.property.CarPropertyEvent; |
| import android.car.hardware.property.ICarPropertyEventListener; |
| import android.car.ICarBluetoothUserService; |
| import android.car.ICarUserService; |
| |
| import static android.car.settings.CarSettings.Secure.KEY_BLUETOOTH_AUTOCONNECT_MUSIC_DEVICES; |
| import static android.car.settings.CarSettings.Secure.KEY_BLUETOOTH_AUTOCONNECT_PHONE_DEVICES; |
| import static android.car.settings.CarSettings.Secure.KEY_BLUETOOTH_AUTOCONNECT_MESSAGING_DEVICES; |
| |
| import android.os.ParcelUuid; |
| import android.os.Parcelable; |
| import android.os.UserHandle; |
| import android.provider.Settings; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| import java.lang.StringBuilder; |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.locks.ReentrantLock; |
| |
| |
| /** |
| * A Bluetooth Device Connection policy that is specific to the use cases of a Car. A car's |
| * bluetooth capabilities in terms of the profiles it supports and its use cases are unique. |
| * Hence the CarService manages the policy that drives when and what to connect to. |
| * |
| * When to connect: |
| * The policy can be configured to listen to various vehicle events that are appropriate to |
| * trigger a connection attempt. Signals like door unlock/open, ignition state changes indicate |
| * user entry and there by attempt to connect to their devices. This removes the need for the user |
| * to manually connect his device everytime they get in a car. |
| * |
| * Which device to connect: |
| * The policy also keeps track of the {Profile : DevicesThatCanConnectOnTheProfile} and when |
| * it is time to connect, picks the device that is appropriate and available. |
| * For every profile, the policy attempts to connect to the last connected device first. The policy |
| * maintains a list of connect-able devices for every profile, in the order of how recently they |
| * connected. The device that successfully connects on a profile is moved to the top of the list |
| * of devices for that profile, so the next time a connection attempt is made, the policy starts |
| * with the last connected device first. |
| */ |
| |
| public class BluetoothDeviceConnectionPolicy { |
| private static final String TAG = "BTDevConnectionPolicy"; |
| private static final String SETTINGS_DELIMITER = ","; |
| private static final boolean DBG = false; |
| private final Context mContext; |
| private boolean mInitialized = false; |
| private boolean mUserSpecificInfoInitialized = false; |
| private final Object mSetupLock = new Object(); |
| |
| // The main data structure that holds on to the {profile:list of known and connectible devices} |
| private HashMap<Integer, BluetoothDevicesInfo> mProfileToConnectableDevicesMap; |
| |
| // The foll. number of connections are what the Bluetooth services and stack supports |
| // and has been tested with. MAP and A2DP are limited to one connection only. HFP and PBAP, |
| // though having the capability to support more than 2, has been tested with 2 connections. |
| private static final int NUM_SUPPORTED_PHONE_CONNECTIONS = 2; // num of HFP and PBAP connections |
| private static final int NUM_SUPPORTED_MSG_CONNECTIONS = 1; // num of MAP connections |
| private static final int NUM_SUPPORTED_MUSIC_CONNECTIONS = 1; // num of A2DP connections |
| private Map<Integer, Integer> mNumSupportedActiveConnections; |
| |
| private BluetoothAutoConnectStateMachine mBluetoothAutoConnectStateMachine; |
| private final BluetoothAdapter mBluetoothAdapter; |
| private BroadcastReceiver mBluetoothBroadcastReceiver; |
| |
| private ICarUserService mCarUserService; |
| private PerUserCarServiceHelper mUserServiceHelper; |
| private ICarBluetoothUserService mCarBluetoothUserService; |
| private ReentrantLock mCarUserServiceAccessLock; |
| |
| // Events that are listened to for triggering an auto-connect: |
| // Cabin events like Door unlock coming from the Cabin Service. |
| private final CarCabinService mCarCabinService; |
| private final CarPropertyListener mCabinEventListener; |
| // Sensor events like Ignition switch ON from the Car Sensor Service |
| private final CarSensorService mCarSensorService; |
| private final CarSensorEventListener mCarSensorEventListener; |
| |
| // PerUserCarService related listeners |
| private final UserServiceConnectionCallback mServiceCallback; |
| |
| // The Bluetooth profiles that the CarService will try to auto-connect on. |
| private final List<Integer> mProfilesToConnect; |
| private static final int MAX_CONNECT_RETRIES = 1; |
| |
| private static final int PROFILE_NOT_AVAILABLE = -1; |
| |
| // Device & Profile currently being connected on |
| private ConnectionParams mConnectionInFlight; |
| |
| public static BluetoothDeviceConnectionPolicy create(Context context, |
| CarCabinService carCabinService, CarSensorService carSensorService, |
| PerUserCarServiceHelper userServiceHelper) { |
| return new BluetoothDeviceConnectionPolicy(context, carCabinService, carSensorService, |
| userServiceHelper); |
| } |
| |
| private BluetoothDeviceConnectionPolicy(Context context, CarCabinService carCabinService, |
| CarSensorService carSensorService, PerUserCarServiceHelper userServiceHelper) { |
| mContext = context; |
| mCarCabinService = carCabinService; |
| mCarSensorService = carSensorService; |
| mUserServiceHelper = userServiceHelper; |
| mCarUserServiceAccessLock = new ReentrantLock(); |
| mProfilesToConnect = Arrays.asList( |
| BluetoothProfile.HEADSET_CLIENT, BluetoothProfile.A2DP_SINK, |
| BluetoothProfile.PBAP_CLIENT, BluetoothProfile.MAP_CLIENT); |
| // mNumSupportedActiveConnections is a HashMap of mProfilesToConnect and the number of |
| // connections each profile supports currently. |
| mNumSupportedActiveConnections = new HashMap<>(mProfilesToConnect.size()); |
| for (Integer profile: mProfilesToConnect) { |
| switch (profile) { |
| case BluetoothProfile.HEADSET_CLIENT: |
| mNumSupportedActiveConnections.put(BluetoothProfile.HEADSET_CLIENT, |
| NUM_SUPPORTED_PHONE_CONNECTIONS); |
| break; |
| case BluetoothProfile.PBAP_CLIENT: |
| mNumSupportedActiveConnections.put(BluetoothProfile.PBAP_CLIENT, |
| NUM_SUPPORTED_PHONE_CONNECTIONS); |
| break; |
| case BluetoothProfile.A2DP_SINK: |
| mNumSupportedActiveConnections.put(BluetoothProfile.A2DP_SINK, |
| NUM_SUPPORTED_MUSIC_CONNECTIONS); |
| break; |
| case BluetoothProfile.MAP_CLIENT: |
| mNumSupportedActiveConnections.put(BluetoothProfile.MAP_CLIENT, |
| NUM_SUPPORTED_MSG_CONNECTIONS); |
| break; |
| } |
| } |
| |
| // Listen to Cabin events for triggering auto connect |
| mCabinEventListener = new CarPropertyListener(); |
| mCarSensorEventListener = new CarSensorEventListener(); |
| // Listen to User switching to connect to per User device. |
| mServiceCallback = new UserServiceConnectionCallback(); |
| mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); |
| if (mBluetoothAdapter == null) { |
| Log.w(TAG, "No Bluetooth Adapter Available"); |
| } |
| } |
| |
| /** |
| * ConnectionParams - parameters/objects relevant to the bluetooth connection calls. |
| * This encapsulates the information that is passed around across different methods in the |
| * policy. Contains the bluetooth device {@link BluetoothDevice} and the list of profiles that |
| * we want that device to connect on. |
| * Used as the currency that methods use to talk to each other in the policy. |
| */ |
| public static class ConnectionParams { |
| private BluetoothDevice mBluetoothDevice; |
| private Integer mBluetoothProfile; |
| |
| public ConnectionParams() { |
| // default constructor |
| } |
| |
| public ConnectionParams(Integer profile) { |
| mBluetoothProfile = profile; |
| } |
| |
| public ConnectionParams(Integer profile, BluetoothDevice device) { |
| mBluetoothProfile = profile; |
| mBluetoothDevice = device; |
| } |
| |
| // getters & Setters |
| public void setBluetoothDevice(BluetoothDevice device) { |
| mBluetoothDevice = device; |
| } |
| |
| public void setBluetoothProfile(Integer profile) { |
| mBluetoothProfile = profile; |
| } |
| |
| public BluetoothDevice getBluetoothDevice() { |
| return mBluetoothDevice; |
| } |
| |
| public Integer getBluetoothProfile() { |
| return mBluetoothProfile; |
| } |
| } |
| |
| /** |
| * BluetoothBroadcastReceiver receives the bluetooth related intents that are relevant to |
| * connection |
| * and bonding state changes. Reports the information to the {@link |
| * BluetoothDeviceConnectionPolicy} |
| * for it update its status. |
| */ |
| public class BluetoothBroadcastReceiver extends BroadcastReceiver { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); |
| if (DBG) { |
| if (device != null) { |
| Log.d(TAG, "Received Intent for device: " + device + " " + action); |
| } else { |
| Log.d(TAG, "Received Intent no device: " + action); |
| } |
| } |
| ConnectionParams connectParams; |
| if (BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(action)) { |
| int bondState = intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE, |
| BluetoothDevice.ERROR); |
| updateBondState(device, bondState); |
| |
| } else if (BluetoothA2dpSink.ACTION_CONNECTION_STATE_CHANGED.equals(action)) { |
| connectParams = new ConnectionParams(BluetoothProfile.A2DP_SINK, device); |
| int currState = intent.getIntExtra(BluetoothProfile.EXTRA_STATE, |
| BluetoothProfile.STATE_DISCONNECTED); |
| notifyConnectionStatus(connectParams, currState); |
| |
| } else if (BluetoothHeadsetClient.ACTION_CONNECTION_STATE_CHANGED.equals(action)) { |
| connectParams = new ConnectionParams(BluetoothProfile.HEADSET_CLIENT, device); |
| int currState = intent.getIntExtra(BluetoothProfile.EXTRA_STATE, |
| BluetoothProfile.STATE_DISCONNECTED); |
| notifyConnectionStatus(connectParams, currState); |
| |
| } else if (BluetoothPbapClient.ACTION_CONNECTION_STATE_CHANGED.equals(action)) { |
| connectParams = new ConnectionParams(BluetoothProfile.PBAP_CLIENT, device); |
| int currState = intent.getIntExtra(BluetoothProfile.EXTRA_STATE, |
| BluetoothProfile.STATE_DISCONNECTED); |
| notifyConnectionStatus(connectParams, currState); |
| |
| } else if (BluetoothMapClient.ACTION_CONNECTION_STATE_CHANGED.equals(action)) { |
| connectParams = new ConnectionParams(BluetoothProfile.MAP_CLIENT, device); |
| int currState = intent.getIntExtra(BluetoothProfile.EXTRA_STATE, |
| BluetoothProfile.STATE_DISCONNECTED); |
| notifyConnectionStatus(connectParams, currState); |
| |
| } else if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(action)) { |
| int currState = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, -1); |
| if (DBG) { |
| Log.d(TAG, "Bluetooth Adapter State: " + currState); |
| } |
| if (currState == BluetoothAdapter.STATE_ON) { |
| // Read from Settings which devices to connect to and populate |
| // mProfileToConnectableDevicesMap |
| readAndRebuildDeviceMapFromSettings(); |
| initiateConnection(); |
| } else if (currState == BluetoothAdapter.STATE_OFF) { |
| // Write currently connected device snapshot to file. |
| writeDeviceInfoToSettings(); |
| resetBluetoothDevicesConnectionInfo(); |
| } |
| } else if (BluetoothDevice.ACTION_UUID.equals(action)) { |
| // Received during pairing with the UUIDs of the Bluetooth profiles supported by |
| // the remote device. |
| if (DBG) { |
| Log.d(TAG, "Received UUID intent for device " + device); |
| } |
| Parcelable[] uuids = intent.getParcelableArrayExtra(BluetoothDevice.EXTRA_UUID); |
| if (uuids != null) { |
| ParcelUuid[] uuidsToSend = new ParcelUuid[uuids.length]; |
| for (int i = 0; i < uuidsToSend.length; i++) { |
| uuidsToSend[i] = (ParcelUuid)uuids[i]; |
| } |
| setProfilePriorities(device, uuidsToSend, BluetoothProfile.PRIORITY_ON); |
| } |
| |
| } |
| } |
| } |
| |
| /** |
| * Set priority for the Bluetooth profiles. |
| * |
| * The Bluetooth service stores the priority of a Bluetooth profile per device as a key value |
| * pair - BluetoothProfile_device:<Priority>. |
| * When we pair a device from the Settings App, the expected behavior is for the app to connect |
| * on all appropriate profiles after successful pairing automatically, without the user having |
| * to explicitly issue a connect. The settings app checks for the priority of the device from |
| * the above key-value pair and if the priority is set to PRIORITY_OFF or PRIORITY_UNDEFINED, |
| * the settings app will stop with just pairing and not connect. |
| * This scenario will happen when we pair a device, then unpair it and then pair it again. When |
| * the device is unpaired, the BT stack sets the priority for that device to PRIORITY_UNDEFINED |
| * ( as a way of resetting). So, the next time the same device is paired, the Settings app will |
| * stop with just pairing and not connect as explained above. Here, we register to receive the |
| * ACTION_UUID intent, which will broadcast the UUIDs corresponding to the profiles supported by |
| * the remote device which is successfully paired and we turn on the priority so when the |
| * Settings app tries to check before connecting, the priority is set to the expected value. |
| * |
| * @param device - Remote Bluetooth device |
| * @param uuids - UUIDs of the Bluetooth Profiles supported by the remote device |
| * @param priority - priority to set |
| */ |
| private void setProfilePriorities(BluetoothDevice device, ParcelUuid[] uuids, int priority) { |
| // need the BluetoothProfile proxy to be able to call the setPriority API |
| if (mCarBluetoothUserService == null) { |
| mCarBluetoothUserService = setupBluetoothUserService(); |
| } |
| if (mCarBluetoothUserService != null) { |
| for (Integer profile : mProfilesToConnect) { |
| setBluetoothProfilePriorityIfUuidFound(uuids, profile, device, priority); |
| } |
| } |
| } |
| |
| private void setBluetoothProfilePriorityIfUuidFound(ParcelUuid[] uuids, int profile, |
| BluetoothDevice device, int priority) { |
| if (mCarBluetoothUserService == null || device == null) { |
| return; |
| } |
| // Build a list of UUIDs that represent a profile. |
| List<ParcelUuid> uuidsToCheck = new ArrayList<>(); |
| switch (profile) { |
| case BluetoothProfile.A2DP_SINK: |
| uuidsToCheck.add(BluetoothUuid.AudioSource); |
| break; |
| case BluetoothProfile.HEADSET_CLIENT: |
| uuidsToCheck.add(BluetoothUuid.Handsfree_AG); |
| uuidsToCheck.add(BluetoothUuid.HSP_AG); |
| break; |
| case BluetoothProfile.PBAP_CLIENT: |
| uuidsToCheck.add(BluetoothUuid.PBAP_PSE); |
| break; |
| case BluetoothProfile.MAP_CLIENT: |
| uuidsToCheck.add(BluetoothUuid.MAS); |
| break; |
| } |
| |
| for (ParcelUuid uuid : uuidsToCheck) { |
| if (BluetoothUuid.isUuidPresent(uuids, uuid)) { |
| try { |
| mCarBluetoothUserService.setProfilePriority(profile, device, priority); |
| } catch (RemoteException e) { |
| Log.e(TAG, "RemoteException calling setProfilePriority"); |
| } |
| // if any one of the uuid in uuidsTocheck is present, set the priority and break |
| break; |
| } |
| } |
| } |
| |
| /** |
| * Cleanup state and reinitialize whenever we connect to the PerUserCarService. |
| * This happens in init() and whenever the PerUserCarService is restarted on User Switch Events |
| */ |
| private class UserServiceConnectionCallback implements PerUserCarServiceHelper.ServiceCallback { |
| @Override |
| public void onServiceConnected(ICarUserService carUserService) { |
| if (mCarUserServiceAccessLock != null) { |
| mCarUserServiceAccessLock.lock(); |
| try { |
| mCarUserService = carUserService; |
| } finally { |
| mCarUserServiceAccessLock.unlock(); |
| } |
| } |
| if (DBG) { |
| Log.d(TAG, "Connected to PerUserCarService"); |
| } |
| // Get the BluetoothUserService and also setup the Bluetooth Connection Proxy for |
| // all profiles. |
| mCarBluetoothUserService = setupBluetoothUserService(); |
| // re-initialize for current user. |
| initializeUserSpecificInfo(); |
| } |
| |
| @Override |
| public void onPreUnbind() { |
| if (DBG) { |
| Log.d(TAG, "Before Unbinding from UserService"); |
| } |
| try { |
| if (mCarBluetoothUserService != null) { |
| mCarBluetoothUserService.closeBluetoothConnectionProxy(); |
| } |
| } catch (RemoteException e) { |
| Log.e(TAG, |
| "Remote Exception during closeBluetoothConnectionProxy(): " + e.getMessage()); |
| } |
| // Clean up information related to user who went background. |
| cleanupUserSpecificInfo(); |
| } |
| @Override |
| public void onServiceDisconnected() { |
| if (DBG) { |
| Log.d(TAG, "Disconnected from PerUserCarService"); |
| } |
| if (mCarUserServiceAccessLock != null) { |
| mCarUserServiceAccessLock.lock(); |
| try { |
| mCarBluetoothUserService = null; |
| mCarUserService = null; |
| } finally { |
| mCarUserServiceAccessLock.unlock(); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Gets the Per User Car Bluetooth Service (ICarBluetoothService) from the PerUserCarService |
| * which acts as a top level Service running in the current user context. |
| * Also sets up the connection proxy objects required to communicate with the Bluetooth |
| * Profile Services. |
| * @return ICarBluetoothUserService running in current user |
| */ |
| private ICarBluetoothUserService setupBluetoothUserService() { |
| ICarBluetoothUserService carBluetoothUserService = null; |
| if (mCarUserService != null) { |
| try { |
| carBluetoothUserService = mCarUserService.getBluetoothUserService(); |
| if (carBluetoothUserService != null) { |
| if (DBG) { |
| Log.d(TAG, "Got CarBTUsrSvc"); |
| } |
| carBluetoothUserService.setupBluetoothConnectionProxy(); |
| } |
| } catch (RemoteException e) { |
| Log.e(TAG, "Remote Service Exception on ServiceConnection Callback: " |
| + e.getMessage()); |
| } |
| } else { |
| if (DBG) { |
| Log.d(TAG, "PerUserCarService not connected"); |
| } |
| } |
| return carBluetoothUserService; |
| } |
| |
| /** |
| * Setup the Bluetooth profile service connections and Vehicle Event listeners. |
| * and start the state machine -{@link BluetoothAutoConnectStateMachine} |
| */ |
| public synchronized void init() { |
| if (DBG) { |
| Log.d(TAG, "init()"); |
| } |
| // Initialize information specific to current user. |
| initializeUserSpecificInfo(); |
| // Listen to various events coming from the vehicle. |
| setupEventListenersLocked(); |
| mInitialized = true; |
| } |
| |
| /** |
| * Setup and initialize information that is specific per User account, which involves: |
| * 1. Reading the list of devices to connect for current user and initialize the deviceMap |
| * with that information. |
| * 2. Register a BroadcastReceiver for bluetooth related events for the current user. |
| * 3. Start and bind to {@link PerUserCarService} as current user. |
| * 4. Start the {@link BluetoothAutoConnectStateMachine} |
| */ |
| private void initializeUserSpecificInfo() { |
| synchronized (mSetupLock) { |
| if (DBG) { |
| Log.d(TAG, "initializeUserSpecificInfo()"); |
| } |
| if (mUserSpecificInfoInitialized) { |
| if (DBG) { |
| Log.d(TAG, "Already Initialized"); |
| } |
| return; |
| } |
| mBluetoothAutoConnectStateMachine = BluetoothAutoConnectStateMachine.make(this); |
| readAndRebuildDeviceMapFromSettings(); |
| setupBluetoothEventsIntentFilterLocked(); |
| |
| mConnectionInFlight = new ConnectionParams(); |
| mUserSpecificInfoInitialized = true; |
| } |
| } |
| |
| /** |
| * Setting up the Intent filter for Bluetooth related broadcasts |
| * This includes knowing when the |
| * 1. Bluetooth Adapter turned on/off |
| * 2. Bonding State of a device changes |
| * 3. A specific profile's connection state changes. |
| */ |
| private void setupBluetoothEventsIntentFilterLocked() { |
| mBluetoothBroadcastReceiver = new BluetoothBroadcastReceiver(); |
| IntentFilter profileFilter = new IntentFilter(); |
| profileFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED); |
| profileFilter.addAction(BluetoothA2dpSink.ACTION_CONNECTION_STATE_CHANGED); |
| profileFilter.addAction(BluetoothHeadsetClient.ACTION_CONNECTION_STATE_CHANGED); |
| profileFilter.addAction(BluetoothPbapClient.ACTION_CONNECTION_STATE_CHANGED); |
| profileFilter.addAction(BluetoothMapClient.ACTION_CONNECTION_STATE_CHANGED); |
| profileFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED); |
| profileFilter.addAction(BluetoothDevice.ACTION_UUID); |
| if (mContext != null) { |
| mContext.registerReceiverAsUser(mBluetoothBroadcastReceiver, UserHandle.CURRENT, |
| profileFilter, null, null); |
| } |
| } |
| |
| /** |
| * Initialize the {@link #mProfileToConnectableDevicesMap}. |
| * {@link #mProfileToConnectableDevicesMap} stores the profile:DeviceList information. This |
| * method retrieves it from persistent memory. |
| */ |
| private synchronized void initDeviceMap() { |
| if (mProfileToConnectableDevicesMap == null) { |
| mProfileToConnectableDevicesMap = new HashMap<>(); |
| for (Integer profile : mProfilesToConnect) { |
| // Build the BluetoothDevicesInfo for this profile. |
| BluetoothDevicesInfo devicesInfo = new BluetoothDevicesInfo(profile, |
| mNumSupportedActiveConnections.get(profile)); |
| mProfileToConnectableDevicesMap.put(profile, devicesInfo); |
| } |
| if (DBG) { |
| Log.d(TAG, "Created a new empty Device Map"); |
| } |
| } |
| } |
| |
| /** |
| * Setting up Listeners to the various events we are interested in listening to for initiating |
| * Bluetooth connection attempts. |
| */ |
| private void setupEventListenersLocked() { |
| // Setting up a listener for events from CarCabinService |
| // For now, we listen to door unlock signal coming from {@link CarCabinService}, |
| // and Ignition state START from {@link CarSensorService} |
| mCarCabinService.registerListener(mCabinEventListener); |
| mCarSensorService.registerOrUpdateSensorListener( |
| CarSensorManager.SENSOR_TYPE_IGNITION_STATE, 0, mCarSensorEventListener); |
| mUserServiceHelper.registerServiceCallback(mServiceCallback); |
| } |
| |
| /** |
| * Handles events coming in from the {@link CarCabinService} |
| * The events that can trigger Bluetooth Scanning from CarCabinService is Door Unlock. |
| * Upon receiving the event that is of interest, initiate a connection attempt by calling |
| * the policy {@link BluetoothDeviceConnectionPolicy} |
| */ |
| private class CarPropertyListener extends ICarPropertyEventListener.Stub { |
| @Override |
| public void onEvent(CarPropertyEvent event) throws RemoteException { |
| if (DBG) { |
| Log.d(TAG, "Cabin change Event : " + event.getEventType()); |
| } |
| Boolean locked; |
| CarPropertyValue value = event.getCarPropertyValue(); |
| Object o = value.getValue(); |
| |
| if (value.getPropertyId() == CarCabinManager.ID_DOOR_LOCK) { |
| if (o instanceof Boolean) { |
| locked = (Boolean) o; |
| if (DBG) { |
| Log.d(TAG, "Door Lock: " + locked); |
| } |
| // Attempting a connection only on a door unlock |
| if (!locked) { |
| initiateConnection(); |
| } |
| } |
| } |
| } |
| } |
| |
| /** |
| * Handles events coming in from the {@link CarSensorService} |
| * The events that can trigger Bluetooth Scanning from CarSensorService is Ignition START. |
| * Upon receiving the event that is of interest, initiate a connection attempt by calling |
| * the policy {@link BluetoothDeviceConnectionPolicy} |
| */ |
| private class CarSensorEventListener extends ICarSensorEventListener.Stub { |
| @Override |
| public void onSensorChanged(List<CarSensorEvent> events) throws RemoteException { |
| if (events != null & !events.isEmpty()) { |
| CarSensorEvent event = events.get(0); |
| if (DBG) { |
| Log.d(TAG, "Sensor event Type : " + event.sensorType); |
| } |
| if (event.sensorType == CarSensorManager.SENSOR_TYPE_IGNITION_STATE) { |
| if (DBG) { |
| Log.d(TAG, "Sensor value : " + event.intValues[0]); |
| } |
| if (event.intValues[0] == CarSensorEvent.IGNITION_STATE_START) { |
| initiateConnection(); |
| } |
| } |
| } |
| } |
| } |
| |
| /** |
| * Clean up slate. Close the Bluetooth profile service connections and quit the state machine - |
| * {@link BluetoothAutoConnectStateMachine} |
| */ |
| public synchronized void release() { |
| if (DBG) { |
| Log.d(TAG, "release()"); |
| } |
| mInitialized = false; |
| writeDeviceInfoToSettings(); |
| cleanupUserSpecificInfo(); |
| closeEventListeners(); |
| } |
| |
| /** |
| * Clean up information related to user who went background. |
| */ |
| private void cleanupUserSpecificInfo() { |
| synchronized (mSetupLock) { |
| if (DBG) { |
| Log.d(TAG, "cleanupUserSpecificInfo()"); |
| } |
| if (!mUserSpecificInfoInitialized) { |
| if (DBG) { |
| Log.d(TAG, "User specific Info Not initialized..Not cleaning up"); |
| } |
| return; |
| } |
| mUserSpecificInfoInitialized = false; |
| // quit the state machine |
| mBluetoothAutoConnectStateMachine.doQuit(); |
| mProfileToConnectableDevicesMap = null; |
| mConnectionInFlight = null; |
| if (mBluetoothBroadcastReceiver != null) { |
| mContext.unregisterReceiver(mBluetoothBroadcastReceiver); |
| mBluetoothBroadcastReceiver = null; |
| } |
| } |
| } |
| |
| /** |
| * Unregister the listeners to the various Vehicle events coming from other parts of the |
| * CarService |
| */ |
| private void closeEventListeners() { |
| if (DBG) { |
| Log.d(TAG, "closeEventListeners()"); |
| } |
| mCarCabinService.unregisterListener(mCabinEventListener); |
| mCarSensorService.unregisterSensorListener(CarSensorManager.SENSOR_TYPE_IGNITION_STATE, |
| mCarSensorEventListener); |
| mUserServiceHelper.unregisterServiceCallback(mServiceCallback); |
| } |
| |
| /** |
| * Resets the {@link BluetoothDevicesInfo#mConnectionInfo} of all the profiles to start from |
| * a clean slate. The ConnectionInfo has all the book keeping information regarding the state |
| * of connection attempts - like which device in the device list for the profile is the next |
| * to try connecting etc. |
| * This method does not clear the {@link BluetoothDevicesInfo#mDeviceInfoList} like the {@link |
| * #resetProfileToConnectableDevicesMap()} method does. |
| */ |
| private synchronized void resetBluetoothDevicesConnectionInfo() { |
| if (DBG) { |
| Log.d(TAG, "Resetting ConnectionInfo for all profiles"); |
| } |
| for (BluetoothDevicesInfo devInfo : mProfileToConnectableDevicesMap.values()) { |
| devInfo.resetConnectionInfoLocked(); |
| } |
| } |
| |
| /** |
| * Resets the {@link #mProfileToConnectableDevicesMap} to a clean and empty slate. |
| */ |
| public synchronized void resetProfileToConnectableDevicesMap() { |
| if (DBG) { |
| Log.d(TAG, "Resetting the mProfilesToConnectableDevicesMap"); |
| } |
| for (BluetoothDevicesInfo devInfo : mProfileToConnectableDevicesMap.values()) { |
| devInfo.resetDeviceListLocked(); |
| } |
| } |
| |
| /** |
| * Returns the list of profiles that the Autoconnection policy attempts to connect on |
| * |
| * @return profile list. |
| */ |
| public synchronized List<Integer> getProfilesToConnect() { |
| return mProfilesToConnect; |
| } |
| |
| /** |
| * Add a new Profile to the list of To Be Connected profiles. |
| * |
| * @param profile - ProfileInfo of the new profile to be added. |
| */ |
| public synchronized void addProfile(Integer profile) { |
| mProfilesToConnect.add(profile); |
| } |
| |
| /** |
| * Add or remove a device based on the bonding state change. |
| * |
| * @param device - device to add/remove |
| * @param bondState - current bonding state |
| */ |
| private void updateBondState(BluetoothDevice device, int bondState) { |
| if (device == null) { |
| Log.e(TAG, "updateBondState: device Null"); |
| return; |
| } |
| if (DBG) { |
| Log.d(TAG, "BondState :" + bondState + " Device: " + device); |
| } |
| // Bonded devices are added to a profile's device list after the device CONNECTS on the |
| // profile. When unpaired, we remove the device from all of the profiles' device list. |
| if (bondState == BluetoothDevice.BOND_NONE) { |
| for (Integer profile : mProfilesToConnect) { |
| if (DBG) { |
| Log.d(TAG, "Removing " + device + " from profile: " + profile); |
| } |
| removeDeviceFromProfile(device, profile); |
| } |
| } |
| |
| } |
| |
| /** |
| * Add a new device to the list of devices connect-able on the given profile |
| * |
| * @param device - Bluetooth device to be added |
| * @param profile - profile to add the device to. |
| */ |
| private synchronized void addDeviceToProfile(BluetoothDevice device, Integer profile) { |
| BluetoothDevicesInfo devInfo = mProfileToConnectableDevicesMap.get(profile); |
| if (devInfo == null) { |
| if (DBG) { |
| Log.d(TAG, "Creating devInfo for profile: " + profile); |
| } |
| devInfo = new BluetoothDevicesInfo(profile); |
| mProfileToConnectableDevicesMap.put(profile, devInfo); |
| } |
| devInfo.addDeviceLocked(device); |
| } |
| |
| /** |
| * Remove the device from the list of devices connect-able on the gievn profile. |
| * |
| * @param device - Bluetooth device to be removed |
| * @param profile - profile to remove the device from |
| */ |
| private synchronized void removeDeviceFromProfile(BluetoothDevice device, Integer profile) { |
| BluetoothDevicesInfo devInfo = mProfileToConnectableDevicesMap.get(profile); |
| if (devInfo != null) { |
| devInfo.removeDeviceLocked(device); |
| } |
| } |
| |
| /** |
| * Initiate a bluetooth connection. |
| */ |
| private void initiateConnection() { |
| // Make sure the bluetooth adapter is available & enabled. |
| if (mBluetoothAdapter == null) { |
| Log.w(TAG, "Bluetooth Adapter null"); |
| return; |
| } |
| |
| if (mBluetoothAdapter.isEnabled()) { |
| if (isDeviceMapEmpty()) { |
| if (DBG) { |
| Log.d(TAG, "Device Map is empty. Nothing to connect to"); |
| } |
| return; |
| } |
| resetDeviceAvailableToConnect(); |
| if (DBG) { |
| Log.d(TAG, "initiateConnection() Reset Device Availability"); |
| } |
| mBluetoothAutoConnectStateMachine.sendMessage(BluetoothAutoConnectStateMachine |
| .CONNECT); |
| } else { |
| if (DBG) { |
| Log.d(TAG, "Bluetooth Adapter not enabled."); |
| } |
| } |
| } |
| |
| /** |
| * Find an unconnected profile and find a device to connect on it. |
| * Finds the appropriate device for the profile from the information available in |
| * {@link #mProfileToConnectableDevicesMap} |
| * |
| * @return true - if we found a device to connect on for any of the {@link #mProfilesToConnect} |
| * false - if we cannot find a device to connect to or if we are not ready to connect yet. |
| */ |
| public synchronized boolean findDeviceToConnect() { |
| if (mBluetoothAdapter == null || !mBluetoothAdapter.isEnabled() |
| || mProfileToConnectableDevicesMap == null || !mInitialized) { |
| if (DBG) { |
| if (mProfileToConnectableDevicesMap == null) { |
| Log.d(TAG, "findDeviceToConnect(): Device Map null"); |
| } else { |
| Log.d(TAG, "findDeviceToConnect(): BT Adapter not enabled"); |
| } |
| } |
| return false; |
| } |
| boolean connectingToADevice = false; |
| // Get the first unconnected profile that we can try to make a connection |
| Integer nextProfile = getNextProfileToConnectLocked(); |
| // Keep going through the profiles until we find a device that we can connect to |
| while (nextProfile != PROFILE_NOT_AVAILABLE) { |
| if (DBG) { |
| Log.d(TAG, "connectToProfile(): " + nextProfile); |
| } |
| // find a device that is next in line for a connection attempt for that profile |
| // and try connecting to it. |
| connectingToADevice = connectToNextDeviceInQueueLocked(nextProfile); |
| // If we found a device to connect, break out of the loop |
| if (connectingToADevice) { |
| if (DBG) { |
| Log.d(TAG, "Found device to connect to"); |
| } |
| BluetoothDeviceConnectionPolicy.ConnectionParams btParams = |
| new BluetoothDeviceConnectionPolicy.ConnectionParams( |
| mConnectionInFlight.getBluetoothProfile(), |
| mConnectionInFlight.getBluetoothDevice()); |
| // set up a time out |
| mBluetoothAutoConnectStateMachine.sendMessageDelayed( |
| BluetoothAutoConnectStateMachine.CONNECT_TIMEOUT, btParams, |
| BluetoothAutoConnectStateMachine.CONNECTION_TIMEOUT_MS); |
| break; |
| } else { |
| // result will be false, if there are no more devices to connect |
| // or if the ProfileProxy objects are null (ServiceConnection |
| // not yet established for this profile) |
| if (DBG) { |
| Log.d(TAG, "No more device to connect on Profile: " + nextProfile); |
| } |
| nextProfile = getNextProfileToConnectLocked(); |
| } |
| } |
| return connectingToADevice; |
| } |
| |
| /** |
| * Get the first unconnected profile. |
| * |
| * @return profile to connect. |
| * Special return value 0 if |
| * 1. all profiles have been connected on. |
| * 2. no profile connected but no nearby known device that can be connected to |
| */ |
| private Integer getNextProfileToConnectLocked() { |
| for (Integer profile : mProfilesToConnect) { |
| BluetoothDevicesInfo devInfo = mProfileToConnectableDevicesMap.get(profile); |
| if (devInfo != null) { |
| if (devInfo.isProfileConnectableLocked()) { |
| return profile; |
| } |
| } else { |
| Log.e(TAG, "Unexpected: devInfo null for profile: " + profile); |
| } |
| } |
| // Reaching here denotes all profiles are connected or No devices available for any profile |
| if (DBG) { |
| Log.d(TAG, "No disconnected profiles"); |
| } |
| return PROFILE_NOT_AVAILABLE; |
| } |
| |
| /** |
| * Try to connect to the next device in the device list for the given profile. |
| * |
| * @param profile - profile to connect on |
| * @return - true if we found a device to connect on for this profile |
| * false - if we cannot find a device to connect to. |
| */ |
| private boolean connectToNextDeviceInQueueLocked(Integer profile) { |
| // Get the Device Information for the given profile and find the next device to connect on |
| boolean connecting = true; |
| boolean proxyAvailable = true; |
| BluetoothDevice devToConnect = null; |
| BluetoothDevicesInfo devInfo = mProfileToConnectableDevicesMap.get(profile); |
| if (devInfo == null) { |
| Log.e(TAG, "Unexpected: No device Queue for this profile: " + profile); |
| return false; |
| } |
| // Check if the Bluetooth profile service's proxy object is available before |
| // attempting to connect. |
| if (mCarBluetoothUserService == null) { |
| mCarBluetoothUserService = setupBluetoothUserService(); |
| } |
| if (mCarBluetoothUserService != null) { |
| try { |
| if (!mCarBluetoothUserService.isBluetoothConnectionProxyAvailable(profile)) { |
| // proxy unavailable. |
| if (DBG) { |
| Log.d(TAG, |
| "Proxy for Bluetooth Profile Service Unavailable: " + profile); |
| } |
| proxyAvailable = false; |
| } |
| } catch (RemoteException e) { |
| Log.e(TAG, "Car BT Service Remote Exception."); |
| proxyAvailable = false; |
| } |
| } else { |
| Log.d(TAG, "CarBluetoothUserSvc null. Car service not bound to PerUserCarSvc."); |
| proxyAvailable = false; |
| } |
| |
| if (proxyAvailable) { |
| // Get the next device in the device list for this profile. |
| devToConnect = devInfo.getNextDeviceInQueueLocked(); |
| if (devToConnect != null) { |
| // deviceAvailable && proxyAvailable |
| try { |
| if (mCarBluetoothUserService != null) { |
| mCarBluetoothUserService.bluetoothConnectToProfile((int) profile, |
| devToConnect); |
| } else { |
| Log.e(TAG, "CarBluetoothUserSvc null"); |
| connecting = false; |
| } |
| } catch (RemoteException e) { |
| Log.e(TAG, "Remote User Service stopped responding: " + e.getMessage()); |
| connecting = false; |
| } |
| } else { |
| // device unavailable |
| if (DBG) { |
| Log.d(TAG, "No paired nearby device to connect to for profile: " + profile); |
| } |
| connecting = false; |
| } |
| } else { |
| connecting = false; |
| } |
| |
| if (connecting && devToConnect != null) { |
| devInfo.setConnectionStateLocked(devToConnect, BluetoothProfile.STATE_CONNECTING); |
| // Increment the retry count & cache what is being connected to |
| // This method is already called from a synchronized context. |
| mConnectionInFlight.setBluetoothDevice(devToConnect); |
| mConnectionInFlight.setBluetoothProfile(profile); |
| devInfo.incrementRetryCountLocked(); |
| if (DBG) { |
| Log.d(TAG, "Increment Retry to: " + devInfo.getRetryCountLocked()); |
| } |
| } else { |
| // reset the mConnectionInFlight |
| mConnectionInFlight.setBluetoothProfile(0); |
| mConnectionInFlight.setBluetoothDevice(null); |
| devInfo.setDeviceAvailableToConnectLocked(false); |
| } |
| return connecting; |
| } |
| |
| /** |
| * Update the device connection status for a profile and also notify the state machine. |
| * This gets called from {@link BluetoothBroadcastReceiver} when it receives a Profile's |
| * CONNECTION_STATE_CHANGED intent. |
| * |
| * @param params - {@link ConnectionParams} device and profile list info |
| * @param currentState - connection result to update |
| */ |
| private void notifyConnectionStatus(ConnectionParams params, int currentState) { |
| // Update the profile's BluetoothDevicesInfo. |
| boolean isConnected; |
| switch (currentState) { |
| case BluetoothProfile.STATE_DISCONNECTED: { |
| isConnected = false; |
| break; |
| } |
| |
| case BluetoothProfile.STATE_CONNECTED: { |
| isConnected = true; |
| break; |
| } |
| |
| default: { |
| if (DBG) { |
| Log.d(TAG, "notifyConnectionStatus() Ignoring state: " + currentState); |
| } |
| return; |
| } |
| |
| } |
| |
| boolean updateSuccessful = updateDeviceConnectionStatus(params, isConnected); |
| if (updateSuccessful) { |
| if (isConnected) { |
| mBluetoothAutoConnectStateMachine.sendMessage( |
| BluetoothAutoConnectStateMachine.DEVICE_CONNECTED, |
| params); |
| } else { |
| mBluetoothAutoConnectStateMachine.sendMessage( |
| BluetoothAutoConnectStateMachine.DEVICE_DISCONNECTED, |
| params); |
| } |
| } |
| } |
| |
| /** |
| * Update the profile's {@link BluetoothDevicesInfo} with the result of the connection |
| * attempt. This gets called from the {@link BluetoothAutoConnectStateMachine} when the |
| * connection attempt times out or from {@link BluetoothBroadcastReceiver} when it receives |
| * a Profile's CONNECTION_STATE_CHANGED intent. |
| * |
| * @param params - {@link ConnectionParams} device and profile list info |
| * @param didConnect - connection result to update |
| */ |
| public synchronized boolean updateDeviceConnectionStatus(ConnectionParams params, |
| boolean didConnect) { |
| if (params == null || params.getBluetoothDevice() == null) { |
| Log.e(TAG, "updateDeviceConnectionStatus: null params"); |
| return false; |
| } |
| // Get the profile to update |
| Integer profileToUpdate = params.getBluetoothProfile(); |
| BluetoothDevice deviceThatConnected = params.getBluetoothDevice(); |
| if (DBG) { |
| Log.d(TAG, "Profile: " + profileToUpdate + " Connected: " + didConnect + " on " |
| + deviceThatConnected.getName()); |
| } |
| |
| // If the connection update is on a different profile or device (a very rare possibility), |
| // it is handled automatically. Just logging it here. |
| if (DBG) { |
| if (mConnectionInFlight != null && mConnectionInFlight.getBluetoothProfile() != null) { |
| if (profileToUpdate.equals(mConnectionInFlight.getBluetoothProfile()) == false) { |
| Log.d(TAG, "Updating profile " + profileToUpdate |
| + " different from connection in flight " |
| + mConnectionInFlight.getBluetoothProfile()); |
| } |
| } |
| |
| if (mConnectionInFlight != null && mConnectionInFlight.getBluetoothDevice() != null) { |
| if (deviceThatConnected.equals(mConnectionInFlight.getBluetoothDevice()) == false) { |
| Log.d(TAG, "Updating device: " + deviceThatConnected.getName() |
| + " different from connection in flight: " |
| + mConnectionInFlight.getBluetoothDevice().getName()); |
| |
| } |
| } |
| } |
| BluetoothDevicesInfo devInfo = null; |
| devInfo = mProfileToConnectableDevicesMap.get(profileToUpdate); |
| if (devInfo == null) { |
| Log.e(TAG, "Unexpected: devInfo null for profile: " + profileToUpdate); |
| return false; |
| } |
| |
| boolean retry = canRetryConnection(profileToUpdate); |
| // Update the status and also if a retry attempt can be made if the |
| // connection timed out in the previous attempt. |
| if (DBG) { |
| Log.d(TAG, "Retry? : " + retry); |
| } |
| devInfo.updateConnectionStatusLocked(deviceThatConnected, didConnect, retry); |
| // Write to persistent memory to have the latest snapshot available |
| writeDeviceInfoToSettings(params); |
| return true; |
| } |
| |
| /** |
| * Returns if we can retry connection attempt on the given profile for the device that is |
| * currently in the head of the queue. |
| * |
| * @param profile - Profile to check |
| */ |
| private synchronized boolean canRetryConnection(Integer profile) { |
| BluetoothDevicesInfo devInfo = mProfileToConnectableDevicesMap.get(profile); |
| if (devInfo == null) { |
| Log.e(TAG, "Unexpected: No device Queue for this profile: " + profile); |
| return false; |
| } |
| if (devInfo.getRetryCountLocked() < MAX_CONNECT_RETRIES) { |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| /** |
| * Helper method to see if there are any connect-able devices on any of the |
| * profiles. |
| * |
| * @return true - if {@link #mProfileToConnectableDevicesMap} does not have any devices for any |
| * profiles. |
| * false - if {@link #mProfileToConnectableDevicesMap} has a device for at least one profile. |
| */ |
| private synchronized boolean isDeviceMapEmpty() { |
| boolean empty = true; |
| for (Integer profile : mProfilesToConnect) { |
| BluetoothDevicesInfo devInfo = mProfileToConnectableDevicesMap.get(profile); |
| if (devInfo != null) { |
| if (devInfo.getNumberOfPairedDevicesLocked() != 0) { |
| if (DBG) { |
| Log.d(TAG, "Device map not empty. Profile: " + profile + " has " |
| + devInfo.getNumberOfPairedDevicesLocked() + " paired devices"); |
| } |
| empty = false; |
| break; |
| } |
| } |
| } |
| return empty; |
| } |
| |
| /** |
| * Reset the Device Available to Connect information for all profiles to Available. |
| * If in a previous connection attempt, we failed to connect on all devices for a profile, |
| * we would update deviceAvailableToConnect for that profile to false. That information |
| * is used to deduce if we should move to the next profile. If marked false, we will not |
| * try to connect on that profile anymore as part of that connection attempt. |
| * However, when we get another connection trigger from the vehicle, we need to reset the |
| * deviceAvailableToConnect information so we can start the connection attempts all over |
| * again. |
| */ |
| private synchronized void resetDeviceAvailableToConnect() { |
| for (BluetoothDevicesInfo devInfo : mProfileToConnectableDevicesMap.values()) { |
| devInfo.setDeviceAvailableToConnectLocked(true); |
| } |
| } |
| |
| /** |
| * Utility function - Prints the Profile: list of devices information to log |
| * Caller should wrap a DBG around this, since this is for debugging purpose. |
| * |
| * @param writer - PrintWriter |
| */ |
| private synchronized void printDeviceMap(PrintWriter writer) { |
| if (mProfileToConnectableDevicesMap == null) { |
| return; |
| } |
| for (BluetoothDevicesInfo devInfo : mProfileToConnectableDevicesMap.values()) { |
| writer.print("Profile: " + devInfo.getProfileLocked() + "\t"); |
| writer.print( |
| "Num of Paired devices: " + devInfo.getNumberOfPairedDevicesLocked() + "\t"); |
| writer.print("Active Connections: " + devInfo.getNumberOfActiveConnectionsLocked()); |
| writer.println(); |
| List<BluetoothDevicesInfo.DeviceInfo> deviceInfoList = devInfo.getDeviceInfoList(); |
| if (deviceInfoList != null) { |
| for (BluetoothDevicesInfo.DeviceInfo devicesInfo : deviceInfoList) { |
| if (devicesInfo.getBluetoothDevice() != null) { |
| writer.print(devicesInfo.getBluetoothDevice().getName() + ":"); |
| writer.print(devicesInfo.getConnectionState() + "\t"); |
| } |
| } |
| writer.println(); |
| } |
| } |
| } |
| |
| /** |
| * Write the device list for all bluetooth profiles that connected. |
| * |
| * @return true if the write was successful, false otherwise |
| */ |
| private synchronized boolean writeDeviceInfoToSettings() { |
| ConnectionParams params; |
| boolean writeResult; |
| for (Integer profile : mProfilesToConnect) { |
| params = new ConnectionParams(profile); |
| writeResult = writeDeviceInfoToSettings(params); |
| if (!writeResult) { |
| Log.e(TAG, "Error writing Device Info for profile:" + profile); |
| return writeResult; |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * Write information about which devices connected on which profile to Settings.Secure. |
| * Essentially the list of devices that a profile can connect on the next auto-connect |
| * attempt. |
| * |
| * @param params - ConnectionParams indicating which bluetooth profile to write this |
| * information |
| * for. |
| * @return true if the write was successful, false otherwise |
| */ |
| public synchronized boolean writeDeviceInfoToSettings(ConnectionParams params) { |
| boolean writeSuccess = true; |
| Integer profileToUpdate = params.getBluetoothProfile(); |
| |
| if (mProfileToConnectableDevicesMap == null) { |
| writeSuccess = false; |
| } else { |
| List<String> deviceNames = new ArrayList<>(); |
| BluetoothDevicesInfo devicesInfo = mProfileToConnectableDevicesMap.get(profileToUpdate); |
| StringBuilder sb = new StringBuilder(); |
| String delimiter = ""; // start off with no delimiter. |
| |
| // Iterate through the List<BluetoothDevice> and build a String that is |
| // names of all devices to be connected for this profile joined together and |
| // delimited by a delimiter (its a ',' here) |
| if (devicesInfo != null && devicesInfo.getDeviceList() != null) { |
| for (BluetoothDevice device : devicesInfo.getDeviceList()) { |
| sb.append(delimiter); |
| sb.append(device.getAddress()); |
| delimiter = SETTINGS_DELIMITER; |
| } |
| |
| } |
| // joinedDeviceNames has something like "22:22:33:44:55:AB,22:23:xx:xx:xx:xx" |
| // mac addresses of connectable devices separated by a delimiter |
| String joinedDeviceNames = sb.toString(); |
| Log.d(TAG, "Profile: " + profileToUpdate + " Writing: " + joinedDeviceNames); |
| |
| long userId = ActivityManager.getCurrentUser(); |
| switch (profileToUpdate) { |
| case BluetoothProfile.A2DP_SINK: |
| Settings.Secure.putStringForUser(mContext.getContentResolver(), |
| KEY_BLUETOOTH_AUTOCONNECT_MUSIC_DEVICES, |
| joinedDeviceNames, (int) userId); |
| break; |
| |
| case BluetoothProfile.HEADSET_CLIENT: |
| Settings.Secure.putStringForUser(mContext.getContentResolver(), |
| KEY_BLUETOOTH_AUTOCONNECT_PHONE_DEVICES, |
| joinedDeviceNames, (int) userId); |
| break; |
| |
| case BluetoothProfile.PBAP_CLIENT: |
| // use the phone |
| break; |
| |
| case BluetoothProfile.MAP_CLIENT: |
| Settings.Secure.putStringForUser(mContext.getContentResolver(), |
| KEY_BLUETOOTH_AUTOCONNECT_MESSAGING_DEVICES, |
| joinedDeviceNames, (int) userId); |
| break; |
| |
| } |
| } |
| return writeSuccess; |
| } |
| |
| /** |
| * Read the device information from Settings.Secure and populate the |
| * {@link #mProfileToConnectableDevicesMap} |
| * |
| * Device MAC addresses are written to Settings.Secure delimited by a ','. |
| * Ex: android.car.BLUETOOTH_AUTOCONNECT_PHONE_DEVICES: xx:xx:xx:xx:xx:xx,yy:yy:yy:yy:yy |
| * denotes that two devices with addresses xx:xx:xx:xx:xx:xx & yy:yy:yy:yy:yy:yy were connected |
| * as phones (in HFP and PBAP profiles) the last time this user was logged in. |
| * |
| * @return - true if the read was successful, false if 1. BT Adapter not enabled 2. No prior |
| * bonded devices 3. No information stored in Settings for this user. |
| */ |
| public synchronized boolean readAndRebuildDeviceMapFromSettings() { |
| List<String> deviceList; |
| String devices = null; |
| // Create and initialize mProfileToConnectableDevicesMap if needed. |
| initDeviceMap(); |
| if (mBluetoothAdapter != null) { |
| if (DBG) { |
| Log.d(TAG, |
| "Number of Bonded devices:" + mBluetoothAdapter.getBondedDevices().size()); |
| } |
| if (mBluetoothAdapter.getBondedDevices().isEmpty()) { |
| if (DBG) { |
| Log.d(TAG, "No Bonded Devices available. Quit rebuilding"); |
| } |
| return false; |
| } |
| } |
| // Read from Settings.Secure for the current user. There are 3 keys 1 each for Phone |
| // (HFP & PBAP), 1 for Music (A2DP) and 1 for Messaging device (MAP) |
| long userId = ActivityManager.getCurrentUser(); |
| for (Integer profile : mProfilesToConnect) { |
| switch (profile) { |
| case BluetoothProfile.A2DP_SINK: |
| devices = Settings.Secure.getStringForUser(mContext.getContentResolver(), |
| KEY_BLUETOOTH_AUTOCONNECT_MUSIC_DEVICES, (int) userId); |
| break; |
| case BluetoothProfile.PBAP_CLIENT: |
| // fall through |
| case BluetoothProfile.HEADSET_CLIENT: |
| devices = Settings.Secure.getStringForUser(mContext.getContentResolver(), |
| KEY_BLUETOOTH_AUTOCONNECT_PHONE_DEVICES, (int) userId); |
| break; |
| case BluetoothProfile.MAP_CLIENT: |
| devices = Settings.Secure.getStringForUser(mContext.getContentResolver(), |
| KEY_BLUETOOTH_AUTOCONNECT_MESSAGING_DEVICES, (int) userId); |
| break; |
| default: |
| Log.e(TAG, "Unexpected profile"); |
| break; |
| } |
| |
| if (devices == null) { |
| if (DBG) { |
| Log.d(TAG, "No device information stored in Settings"); |
| } |
| return false; |
| } |
| if (DBG) { |
| Log.d(TAG, "Devices in Settings: " + devices); |
| } |
| // Get a list of Device Mac Addresses from the value |
| deviceList = Arrays.asList(devices.split(SETTINGS_DELIMITER)); |
| if (deviceList == null) { |
| return false; |
| } |
| BluetoothDevicesInfo devicesInfo = mProfileToConnectableDevicesMap.get(profile); |
| // Do we have a bonded device with this name? If so, get it and populate the device |
| // map. |
| for (String address : deviceList) { |
| BluetoothDevice deviceToAdd = getBondedDeviceWithGivenName(address); |
| if (deviceToAdd != null) { |
| devicesInfo.addDeviceLocked(deviceToAdd); |
| } else { |
| if (DBG) { |
| Log.d(TAG, "No device with name " + address + " found in bonded devices"); |
| } |
| } |
| } |
| mProfileToConnectableDevicesMap.put(profile, devicesInfo); |
| } |
| return true; |
| } |
| |
| /** |
| * Given the device name, find the corresponding {@link BluetoothDevice} from the list of |
| * Bonded devices. |
| * |
| * @param name Bluetooth Device name |
| */ |
| private BluetoothDevice getBondedDeviceWithGivenName(String name) { |
| if (mBluetoothAdapter == null) { |
| if (DBG) { |
| Log.d(TAG, "Bluetooth Adapter Null"); |
| } |
| return null; |
| } |
| if (name == null) { |
| Log.w(TAG, "getBondedDeviceWithGivenName() Passing in a null name"); |
| return null; |
| } |
| if (DBG) { |
| Log.d(TAG, "Looking for bonded device: " + name); |
| } |
| BluetoothDevice btDevice = null; |
| Set<BluetoothDevice> bondedDevices = mBluetoothAdapter.getBondedDevices(); |
| for (BluetoothDevice bd : bondedDevices) { |
| if (name.equals(bd.getAddress())) { |
| btDevice = bd; |
| break; |
| } |
| } |
| return btDevice; |
| } |
| |
| |
| public void dump(PrintWriter writer) { |
| writer.println("*BluetoothDeviceConnectionPolicy*"); |
| printDeviceMap(writer); |
| mBluetoothAutoConnectStateMachine.dump(writer); |
| } |
| } |
