318 lines
11 KiB
Java
318 lines
11 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 android.Manifest;
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import android.annotation.NonNull;
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import android.annotation.RequiresPermission;
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import android.annotation.SdkConstant;
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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.RemoteException;
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import android.util.Log;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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/**
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* Public API for controlling the Bluetooth Pbap Service. This includes
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* Bluetooth Phone book Access profile.
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* BluetoothPbap is a proxy object for controlling the Bluetooth Pbap
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* Service via IPC.
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*
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* Creating a BluetoothPbap object will create a binding with the
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* BluetoothPbap service. Users of this object should call close() when they
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* are finished with the BluetoothPbap, so that this proxy object can unbind
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* from the service.
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*
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* This BluetoothPbap object is not immediately bound to the
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* BluetoothPbap service. Use the ServiceListener interface to obtain a
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* notification when it is bound, this is especially important if you wish to
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* immediately call methods on BluetoothPbap after construction.
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*
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* To get an instance of the BluetoothPbap class, you can call
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* {@link BluetoothAdapter#getProfileProxy(Context, ServiceListener, int)} with the final param
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* being {@link BluetoothProfile#PBAP}. The ServiceListener should be able to get the instance of
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* BluetoothPbap in {@link android.bluetooth.BluetoothProfile.ServiceListener#onServiceConnected}.
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*
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* Android only supports one connected Bluetooth Pce at a time.
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*
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* @hide
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*/
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@SystemApi
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public class BluetoothPbap implements BluetoothProfile {
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private static final String TAG = "BluetoothPbap";
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private static final boolean DBG = false;
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/**
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* Intent used to broadcast the change in connection state of the PBAP
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* profile.
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*
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* <p>This intent will have 3 extras:
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* <ul>
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* <li> {@link BluetoothProfile#EXTRA_STATE} - The current state of the profile. </li>
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* <li> {@link BluetoothProfile#EXTRA_PREVIOUS_STATE}- The previous state of the profile. </li>
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* <li> {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. </li>
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* </ul>
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* <p>{@link BluetoothProfile#EXTRA_STATE} or {@link BluetoothProfile#EXTRA_PREVIOUS_STATE}
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* can be any of {@link BluetoothProfile#STATE_DISCONNECTED},
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* {@link BluetoothProfile#STATE_CONNECTING}, {@link BluetoothProfile#STATE_CONNECTED},
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* {@link BluetoothProfile#STATE_DISCONNECTING}.
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*
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* @hide
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*/
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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(SdkConstant.SdkConstantType.BROADCAST_INTENT_ACTION)
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public static final String ACTION_CONNECTION_STATE_CHANGED =
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"android.bluetooth.pbap.profile.action.CONNECTION_STATE_CHANGED";
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private final AttributionSource mAttributionSource;
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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 BluetoothAdapter mAdapter;
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private final BluetoothProfileConnector<IBluetoothPbap> mProfileConnector =
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new BluetoothProfileConnector(this, BluetoothProfile.PBAP, "BluetoothPbap",
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IBluetoothPbap.class.getName()) {
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@Override
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public IBluetoothPbap getServiceInterface(IBinder service) {
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return IBluetoothPbap.Stub.asInterface(service);
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}
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};
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/**
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* Create a BluetoothPbap proxy object.
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*
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* @hide
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*/
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public BluetoothPbap(Context context, ServiceListener listener, BluetoothAdapter adapter) {
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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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}
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/** @hide */
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protected void finalize() throws Throwable {
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try {
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close();
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} finally {
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super.finalize();
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}
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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 BluetoothPbap 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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public synchronized void close() {
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mProfileConnector.disconnect();
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}
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private IBluetoothPbap getService() {
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return (IBluetoothPbap) mProfileConnector.getService();
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}
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/**
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* {@inheritDoc}
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*
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* @hide
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*/
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@Override
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@RequiresBluetoothConnectPermission
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@RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
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public List<BluetoothDevice> getConnectedDevices() {
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log("getConnectedDevices()");
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final IBluetoothPbap service = getService();
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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return new ArrayList<BluetoothDevice>();
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}
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try {
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return Attributable.setAttributionSource(
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service.getConnectedDevices(mAttributionSource), mAttributionSource);
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} catch (RemoteException e) {
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Log.e(TAG, e.toString());
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}
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return new ArrayList<BluetoothDevice>();
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}
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/**
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* {@inheritDoc}
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*
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* @hide
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*/
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@SystemApi
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@Override
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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 @BtProfileState int getConnectionState(@NonNull BluetoothDevice device) {
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log("getConnectionState: device=" + device);
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try {
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final IBluetoothPbap service = getService();
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if (service != null && isEnabled() && isValidDevice(device)) {
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return service.getConnectionState(device, mAttributionSource);
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}
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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}
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return BluetoothProfile.STATE_DISCONNECTED;
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} catch (RemoteException e) {
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Log.e(TAG, e.toString());
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}
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return BluetoothProfile.STATE_DISCONNECTED;
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}
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/**
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* {@inheritDoc}
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*
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* @hide
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*/
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@Override
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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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log("getDevicesMatchingConnectionStates: states=" + Arrays.toString(states));
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final IBluetoothPbap service = getService();
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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return new ArrayList<BluetoothDevice>();
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}
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try {
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return Attributable.setAttributionSource(
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service.getDevicesMatchingConnectionStates(states, mAttributionSource),
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mAttributionSource);
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} catch (RemoteException e) {
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Log.e(TAG, e.toString());
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}
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return new ArrayList<BluetoothDevice>();
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}
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/**
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* Set connection policy of the profile and tries to disconnect it if connectionPolicy is
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* {@link BluetoothProfile#CONNECTION_POLICY_FORBIDDEN}
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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:
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* {@link BluetoothProfile#CONNECTION_POLICY_ALLOWED},
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* {@link BluetoothProfile#CONNECTION_POLICY_FORBIDDEN},
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* {@link BluetoothProfile#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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*
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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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try {
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final IBluetoothPbap service = getService();
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if (service != null && isEnabled()
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&& isValidDevice(device)) {
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if (connectionPolicy != BluetoothProfile.CONNECTION_POLICY_FORBIDDEN
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&& connectionPolicy != BluetoothProfile.CONNECTION_POLICY_ALLOWED) {
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return false;
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}
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return service.setConnectionPolicy(device, connectionPolicy, mAttributionSource);
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}
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if (service == null) Log.w(TAG, "Proxy not attached to service");
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return false;
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} catch (RemoteException e) {
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Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
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return false;
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}
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}
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/**
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* Disconnects the current Pbap client (PCE). Currently this call blocks,
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* it may soon be made asynchronous. Returns false if this proxy object is
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* not currently connected to the Pbap service.
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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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log("disconnect()");
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final IBluetoothPbap service = getService();
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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return false;
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}
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try {
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service.disconnect(device, mAttributionSource);
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return true;
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} catch (RemoteException e) {
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Log.e(TAG, e.toString());
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}
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return false;
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}
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private boolean isEnabled() {
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if (mAdapter.getState() == BluetoothAdapter.STATE_ON) return true;
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return false;
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}
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private boolean isValidDevice(BluetoothDevice device) {
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if (device == null) return false;
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if (BluetoothAdapter.checkBluetoothAddress(device.getAddress())) return true;
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return false;
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}
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private static void log(String msg) {
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if (DBG) {
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Log.d(TAG, msg);
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}
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}
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}
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