571 lines
22 KiB
Java
571 lines
22 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.bluetooth;
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import static android.bluetooth.BluetoothUtils.getSyncTimeout;
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import android.Manifest;
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import android.annotation.NonNull;
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import android.annotation.RequiresNoPermission;
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import android.annotation.RequiresPermission;
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import android.annotation.SdkConstant;
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import android.annotation.SdkConstant.SdkConstantType;
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import android.annotation.SuppressLint;
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import android.annotation.SystemApi;
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import android.bluetooth.annotations.RequiresBluetoothConnectPermission;
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import android.compat.annotation.UnsupportedAppUsage;
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import android.content.AttributionSource;
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import android.content.Context;
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import android.os.Build;
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import android.os.IBinder;
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import android.os.IpcDataCache;
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import android.os.RemoteException;
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import android.util.CloseGuard;
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import android.util.Log;
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import android.util.Pair;
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import com.android.modules.utils.SynchronousResultReceiver;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.concurrent.TimeoutException;
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/**
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* This class provides the APIs to control the Bluetooth MAP
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* Profile.
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*
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* @hide
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*/
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@SystemApi
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public final class BluetoothMap implements BluetoothProfile, AutoCloseable {
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private static final String TAG = "BluetoothMap";
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private static final boolean DBG = true;
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private static final boolean VDBG = false;
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private CloseGuard mCloseGuard;
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/** @hide */
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@SuppressLint("ActionValue")
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@SystemApi
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
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public static final String ACTION_CONNECTION_STATE_CHANGED =
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"android.bluetooth.map.profile.action.CONNECTION_STATE_CHANGED";
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/**
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* There was an error trying to obtain the state
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*
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* @hide
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*/
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public static final int STATE_ERROR = -1;
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/** @hide */
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public static final int RESULT_FAILURE = 0;
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/** @hide */
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public static final int RESULT_SUCCESS = 1;
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/**
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* Connection canceled before completion.
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*
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* @hide
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*/
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public static final int RESULT_CANCELED = 2;
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private final BluetoothAdapter mAdapter;
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private final AttributionSource mAttributionSource;
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private final BluetoothProfileConnector<IBluetoothMap> mProfileConnector =
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new BluetoothProfileConnector(this, BluetoothProfile.MAP,
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"BluetoothMap", IBluetoothMap.class.getName()) {
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@Override
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public IBluetoothMap getServiceInterface(IBinder service) {
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return IBluetoothMap.Stub.asInterface(service);
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}
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};
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/**
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* Create a BluetoothMap proxy object.
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*/
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/* package */ BluetoothMap(Context context, ServiceListener listener,
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BluetoothAdapter adapter) {
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if (DBG) Log.d(TAG, "Create BluetoothMap proxy object");
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mAdapter = adapter;
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mAttributionSource = adapter.getAttributionSource();
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mProfileConnector.connect(context, listener);
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mCloseGuard = new CloseGuard();
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mCloseGuard.open("close");
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}
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protected void finalize() {
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if (mCloseGuard != null) {
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mCloseGuard.warnIfOpen();
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}
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close();
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}
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/**
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* Close the connection to the backing service.
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* Other public functions of BluetoothMap will return default error
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* results once close() has been called. Multiple invocations of close()
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* are ok.
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*
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* @hide
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*/
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@SystemApi
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public void close() {
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if (VDBG) log("close()");
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mProfileConnector.disconnect();
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}
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private IBluetoothMap getService() {
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return mProfileConnector.getService();
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}
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/**
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* Get the current state of the BluetoothMap service.
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*
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* @return One of the STATE_ return codes, or STATE_ERROR if this proxy object is currently not
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* connected to the Map service.
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*
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* @hide
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public int getState() {
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if (VDBG) log("getState()");
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final IBluetoothMap service = getService();
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final int defaultValue = BluetoothMap.STATE_ERROR;
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled()) {
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try {
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final SynchronousResultReceiver<Integer> recv = SynchronousResultReceiver.get();
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service.getState(mAttributionSource, recv);
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return recv.awaitResultNoInterrupt(getSyncTimeout()).getValue(defaultValue);
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} catch (RemoteException | TimeoutException e) {
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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return defaultValue;
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}
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/**
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* Get the currently connected remote Bluetooth device (PCE).
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*
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* @return The remote Bluetooth device, or null if not in connected or connecting state, or if
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* this proxy object is not connected to the Map service.
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*
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* @hide
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public BluetoothDevice getClient() {
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if (VDBG) log("getClient()");
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final IBluetoothMap service = getService();
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final BluetoothDevice defaultValue = null;
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled()) {
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try {
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final SynchronousResultReceiver<BluetoothDevice> recv =
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SynchronousResultReceiver.get();
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service.getClient(mAttributionSource, recv);
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return Attributable.setAttributionSource(
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recv.awaitResultNoInterrupt(getSyncTimeout()).getValue(defaultValue),
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mAttributionSource);
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} catch (RemoteException | TimeoutException e) {
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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return defaultValue;
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}
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/**
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* Returns true if the specified Bluetooth device is connected.
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* Returns false if not connected, or if this proxy object is not
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* currently connected to the Map service.
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*
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* @hide
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public boolean isConnected(BluetoothDevice device) {
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if (VDBG) log("isConnected(" + device + ")");
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final IBluetoothMap service = getService();
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final boolean defaultValue = false;
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled() && isValidDevice(device)) {
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try {
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final SynchronousResultReceiver<Boolean> recv = SynchronousResultReceiver.get();
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service.isConnected(device, mAttributionSource, recv);
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return recv.awaitResultNoInterrupt(getSyncTimeout()).getValue(defaultValue);
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} catch (RemoteException | TimeoutException e) {
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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return defaultValue;
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}
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/**
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* Initiate connection. Initiation of outgoing connections is not
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* supported for MAP server.
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*
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* @hide
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*/
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@RequiresNoPermission
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public boolean connect(BluetoothDevice device) {
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if (DBG) log("connect(" + device + ")" + "not supported for MAPS");
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return false;
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}
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/**
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* Initiate disconnect.
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*
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* @param device Remote Bluetooth Device
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* @return false on error, true otherwise
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*
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* @hide
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*/
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@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public boolean disconnect(BluetoothDevice device) {
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if (DBG) log("disconnect(" + device + ")");
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final IBluetoothMap service = getService();
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final boolean defaultValue = false;
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled() && isValidDevice(device)) {
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try {
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final SynchronousResultReceiver<Boolean> recv = SynchronousResultReceiver.get();
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service.disconnect(device, mAttributionSource, recv);
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return recv.awaitResultNoInterrupt(getSyncTimeout()).getValue(defaultValue);
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} catch (RemoteException | TimeoutException e) {
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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return defaultValue;
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}
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/**
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* Check class bits for possible Map support.
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* This is a simple heuristic that tries to guess if a device with the
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* given class bits might support Map. It is not accurate for all
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* devices. It tries to err on the side of false positives.
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*
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* @return True if this device might support Map.
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*
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* @hide
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*/
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public static boolean doesClassMatchSink(BluetoothClass btClass) {
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// TODO optimize the rule
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switch (btClass.getDeviceClass()) {
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case BluetoothClass.Device.COMPUTER_DESKTOP:
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case BluetoothClass.Device.COMPUTER_LAPTOP:
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case BluetoothClass.Device.COMPUTER_SERVER:
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case BluetoothClass.Device.COMPUTER_UNCATEGORIZED:
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return true;
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default:
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return false;
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}
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}
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/**
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* Get the list of connected devices. Currently at most one.
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*
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* @return list of connected devices
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*
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* @hide
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*/
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@SystemApi
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@RequiresBluetoothConnectPermission
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@RequiresPermission(allOf = {
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android.Manifest.permission.BLUETOOTH_CONNECT,
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android.Manifest.permission.BLUETOOTH_PRIVILEGED,
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})
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public @NonNull List<BluetoothDevice> getConnectedDevices() {
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if (DBG) log("getConnectedDevices()");
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final IBluetoothMap service = getService();
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final List<BluetoothDevice> defaultValue = new ArrayList<BluetoothDevice>();
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled()) {
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try {
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final SynchronousResultReceiver<List<BluetoothDevice>> recv =
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SynchronousResultReceiver.get();
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service.getConnectedDevices(mAttributionSource, recv);
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return Attributable.setAttributionSource(
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recv.awaitResultNoInterrupt(getSyncTimeout()).getValue(defaultValue),
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mAttributionSource);
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} catch (RemoteException | TimeoutException e) {
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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return defaultValue;
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}
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/**
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* Get the list of devices matching specified states. Currently at most one.
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*
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* @return list of matching devices
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*
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* @hide
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
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public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
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if (DBG) log("getDevicesMatchingStates()");
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final IBluetoothMap service = getService();
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final List<BluetoothDevice> defaultValue = new ArrayList<BluetoothDevice>();
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled()) {
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try {
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final SynchronousResultReceiver<List<BluetoothDevice>> recv =
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SynchronousResultReceiver.get();
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service.getDevicesMatchingConnectionStates(states, mAttributionSource, recv);
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return Attributable.setAttributionSource(
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recv.awaitResultNoInterrupt(getSyncTimeout()).getValue(defaultValue),
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mAttributionSource);
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} catch (RemoteException | TimeoutException e) {
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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return defaultValue;
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}
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/**
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* There are several instances of IpcDataCache used in this class.
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* BluetoothCache wraps up the common code. All caches are created with a maximum of
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* eight entries, and the key is in the bluetooth module. The name is set to the api.
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*/
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private static class BluetoothCache<Q, R> extends IpcDataCache<Q, R> {
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BluetoothCache(String api, IpcDataCache.QueryHandler query) {
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super(8, IpcDataCache.MODULE_BLUETOOTH, api, api, query);
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}};
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/** @hide */
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public void disableBluetoothGetConnectionStateCache() {
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mBluetoothConnectionCache.disableForCurrentProcess();
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}
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/** @hide */
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public static void invalidateBluetoothGetConnectionStateCache() {
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invalidateCache(GET_CONNECTION_STATE_API);
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}
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/**
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* Invalidate a bluetooth cache. This method is just a short-hand wrapper that
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* enforces the bluetooth module.
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*/
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private static void invalidateCache(@NonNull String api) {
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IpcDataCache.invalidateCache(IpcDataCache.MODULE_BLUETOOTH, api);
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}
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private final IpcDataCache.QueryHandler<Pair<IBluetoothMap, BluetoothDevice>, Integer>
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mBluetoothConnectionQuery = new IpcDataCache.QueryHandler<>() {
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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@Override
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public Integer apply(Pair<IBluetoothMap, BluetoothDevice> pairQuery) {
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if (DBG) {
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log("getConnectionState(" + pairQuery.second.getAnonymizedAddress()
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+ ") uncached");
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}
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final SynchronousResultReceiver<Integer> recv = SynchronousResultReceiver.get();
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try {
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pairQuery.first
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.getConnectionState(pairQuery.second, mAttributionSource, recv);
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return recv.awaitResultNoInterrupt(getSyncTimeout())
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.getValue(BluetoothProfile.STATE_DISCONNECTED);
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} catch (RemoteException | TimeoutException e) {
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throw new RuntimeException(e);
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}
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}
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};
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private static final String GET_CONNECTION_STATE_API = "BluetoothMap_getConnectionState";
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private final BluetoothCache<Pair<IBluetoothMap, BluetoothDevice>, Integer>
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mBluetoothConnectionCache = new BluetoothCache<>(GET_CONNECTION_STATE_API,
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mBluetoothConnectionQuery);
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/**
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* Get connection state of device
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*
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* @return device connection state
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* @hide
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
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public int getConnectionState(BluetoothDevice device) {
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if (DBG) log("getConnectionState(" + device + ")");
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final IBluetoothMap service = getService();
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if (service == null) {
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Log.w(TAG, "BT not enabled. Cannot get connection state");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled() && isValidDevice(device)) {
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try {
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return mBluetoothConnectionCache.query(new Pair<>(service, device));
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} catch (RuntimeException e) {
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if (!(e.getCause() instanceof TimeoutException)
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&& !(e.getCause() instanceof RemoteException)) {
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throw e;
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}
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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return BluetoothProfile.STATE_DISCONNECTED;
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}
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/**
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* Set priority of the profile
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*
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* <p> The device should already be paired.
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* Priority can be one of {@link #PRIORITY_ON} or {@link #PRIORITY_OFF},
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*
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* @param device Paired bluetooth device
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* @param priority
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* @return true if priority is set, false on error
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* @hide
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(allOf = {
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android.Manifest.permission.BLUETOOTH_CONNECT,
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android.Manifest.permission.BLUETOOTH_PRIVILEGED,
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})
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public boolean setPriority(BluetoothDevice device, int priority) {
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if (DBG) log("setPriority(" + device + ", " + priority + ")");
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return setConnectionPolicy(device, BluetoothAdapter.priorityToConnectionPolicy(priority));
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}
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/**
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* Set connection policy of the profile
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*
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* <p> The device should already be paired.
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* Connection policy can be one of {@link #CONNECTION_POLICY_ALLOWED},
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* {@link #CONNECTION_POLICY_FORBIDDEN}, {@link #CONNECTION_POLICY_UNKNOWN}
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*
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* @param device Paired bluetooth device
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* @param connectionPolicy is the connection policy to set to for this profile
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* @return true if connectionPolicy is set, false on error
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* @hide
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*/
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@SystemApi
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@RequiresBluetoothConnectPermission
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@RequiresPermission(allOf = {
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android.Manifest.permission.BLUETOOTH_CONNECT,
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android.Manifest.permission.BLUETOOTH_PRIVILEGED,
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})
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public boolean setConnectionPolicy(@NonNull BluetoothDevice device,
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@ConnectionPolicy int connectionPolicy) {
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if (DBG) log("setConnectionPolicy(" + device + ", " + connectionPolicy + ")");
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final IBluetoothMap service = getService();
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final boolean defaultValue = false;
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled() && isValidDevice(device)
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&& (connectionPolicy == BluetoothProfile.CONNECTION_POLICY_FORBIDDEN
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|| connectionPolicy == BluetoothProfile.CONNECTION_POLICY_ALLOWED)) {
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try {
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final SynchronousResultReceiver<Boolean> recv = SynchronousResultReceiver.get();
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service.setConnectionPolicy(device, connectionPolicy, mAttributionSource, recv);
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return recv.awaitResultNoInterrupt(getSyncTimeout()).getValue(defaultValue);
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} catch (RemoteException | TimeoutException e) {
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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return defaultValue;
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}
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/**
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* Get the priority of the profile.
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*
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* <p> The priority can be any of:
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* {@link #PRIORITY_OFF}, {@link #PRIORITY_ON}, {@link #PRIORITY_UNDEFINED}
|
|
*
|
|
* @param device Bluetooth device
|
|
* @return priority of the device
|
|
* @hide
|
|
*/
|
|
@RequiresBluetoothConnectPermission
|
|
@RequiresPermission(allOf = {
|
|
android.Manifest.permission.BLUETOOTH_CONNECT,
|
|
android.Manifest.permission.BLUETOOTH_PRIVILEGED,
|
|
})
|
|
public int getPriority(BluetoothDevice device) {
|
|
if (VDBG) log("getPriority(" + device + ")");
|
|
return BluetoothAdapter.connectionPolicyToPriority(getConnectionPolicy(device));
|
|
}
|
|
|
|
/**
|
|
* Get the connection policy of the profile.
|
|
*
|
|
* <p> The connection policy can be any of:
|
|
* {@link #CONNECTION_POLICY_ALLOWED}, {@link #CONNECTION_POLICY_FORBIDDEN},
|
|
* {@link #CONNECTION_POLICY_UNKNOWN}
|
|
*
|
|
* @param device Bluetooth device
|
|
* @return connection policy of the device
|
|
* @hide
|
|
*/
|
|
@SystemApi
|
|
@RequiresBluetoothConnectPermission
|
|
@RequiresPermission(allOf = {
|
|
android.Manifest.permission.BLUETOOTH_CONNECT,
|
|
android.Manifest.permission.BLUETOOTH_PRIVILEGED,
|
|
})
|
|
public @ConnectionPolicy int getConnectionPolicy(@NonNull BluetoothDevice device) {
|
|
if (VDBG) log("getConnectionPolicy(" + device + ")");
|
|
final IBluetoothMap service = getService();
|
|
final int defaultValue = BluetoothProfile.CONNECTION_POLICY_FORBIDDEN;
|
|
if (service == null) {
|
|
Log.w(TAG, "Proxy not attached to service");
|
|
if (DBG) log(Log.getStackTraceString(new Throwable()));
|
|
} else if (isEnabled() && isValidDevice(device)) {
|
|
try {
|
|
final SynchronousResultReceiver<Integer> recv = SynchronousResultReceiver.get();
|
|
service.getConnectionPolicy(device, mAttributionSource, recv);
|
|
return recv.awaitResultNoInterrupt(getSyncTimeout()).getValue(defaultValue);
|
|
} catch (RemoteException | TimeoutException e) {
|
|
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
|
|
}
|
|
}
|
|
return defaultValue;
|
|
}
|
|
|
|
private static void log(String msg) {
|
|
Log.d(TAG, msg);
|
|
}
|
|
|
|
private boolean isEnabled() {
|
|
return mAdapter.isEnabled();
|
|
}
|
|
|
|
private static boolean isValidDevice(BluetoothDevice device) {
|
|
return device != null && BluetoothAdapter.checkBluetoothAddress(device.getAddress());
|
|
}
|
|
}
|