| /* |
| * Copyright (C) 2016 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.bluetooth.mapclient; |
| |
| import android.bluetooth.BluetoothDevice; |
| import android.bluetooth.BluetoothSocket; |
| import android.bluetooth.SdpMasRecord; |
| import android.os.Handler; |
| import android.os.HandlerThread; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.util.Log; |
| |
| import com.android.bluetooth.BluetoothObexTransport; |
| import com.android.bluetooth.statemachine.StateMachine; |
| |
| import java.io.IOException; |
| import java.lang.ref.WeakReference; |
| |
| import javax.obex.ClientSession; |
| import javax.obex.HeaderSet; |
| import javax.obex.ResponseCodes; |
| |
| /* MasClient is a one time use connection to a server defined by the SDP record passed in at |
| * construction. After use shutdown() must be called to properly clean up. |
| */ |
| public class MasClient { |
| private static final int CONNECT = 0; |
| private static final int DISCONNECT = 1; |
| private static final int REQUEST = 2; |
| private static final String TAG = "MasClient"; |
| private static final boolean DBG = MapClientService.DBG; |
| private static final boolean VDBG = MapClientService.VDBG; |
| private static final byte[] BLUETOOTH_UUID_OBEX_MAS = new byte[]{ |
| (byte) 0xbb, |
| 0x58, |
| 0x2b, |
| 0x40, |
| 0x42, |
| 0x0c, |
| 0x11, |
| (byte) 0xdb, |
| (byte) 0xb0, |
| (byte) 0xde, |
| 0x08, |
| 0x00, |
| 0x20, |
| 0x0c, |
| (byte) 0x9a, |
| 0x66 |
| }; |
| private static final byte OAP_TAGID_MAP_SUPPORTED_FEATURES = 0x29; |
| private static final int MAP_FEATURE_NOTIFICATION_REGISTRATION = 0x00000001; |
| private static final int MAP_FEATURE_NOTIFICATION = 0x00000002; |
| static final int MAP_SUPPORTED_FEATURES = |
| MAP_FEATURE_NOTIFICATION_REGISTRATION | MAP_FEATURE_NOTIFICATION; |
| |
| private final StateMachine mCallback; |
| private Handler mHandler; |
| private BluetoothSocket mSocket; |
| private BluetoothObexTransport mTransport; |
| private BluetoothDevice mRemoteDevice; |
| private ClientSession mSession; |
| private HandlerThread mThread; |
| private boolean mConnected = false; |
| SdpMasRecord mSdpMasRecord; |
| |
| public MasClient(BluetoothDevice remoteDevice, StateMachine callback, |
| SdpMasRecord sdpMasRecord) { |
| if (remoteDevice == null) { |
| throw new NullPointerException("Obex transport is null"); |
| } |
| mRemoteDevice = remoteDevice; |
| mCallback = callback; |
| mSdpMasRecord = sdpMasRecord; |
| mThread = new HandlerThread("Client"); |
| mThread.start(); |
| /* This will block until the looper have started, hence it will be safe to use it, |
| when the constructor completes */ |
| Looper looper = mThread.getLooper(); |
| mHandler = new MasClientHandler(looper, this); |
| |
| mHandler.obtainMessage(CONNECT).sendToTarget(); |
| } |
| |
| private void connect() { |
| try { |
| if (DBG) { |
| Log.d(TAG, "Connecting to OBEX on RFCOM channel " |
| + mSdpMasRecord.getRfcommCannelNumber()); |
| } |
| mSocket = mRemoteDevice.createRfcommSocket(mSdpMasRecord.getRfcommCannelNumber()); |
| if (DBG) Log.d(TAG, mRemoteDevice.toString() + "Socket: " + mSocket.toString()); |
| mSocket.connect(); |
| mTransport = new BluetoothObexTransport(mSocket); |
| |
| mSession = new ClientSession(mTransport); |
| HeaderSet headerset = new HeaderSet(); |
| headerset.setHeader(HeaderSet.TARGET, BLUETOOTH_UUID_OBEX_MAS); |
| ObexAppParameters oap = new ObexAppParameters(); |
| |
| oap.add(OAP_TAGID_MAP_SUPPORTED_FEATURES, MAP_SUPPORTED_FEATURES); |
| |
| oap.addToHeaderSet(headerset); |
| |
| headerset = mSession.connect(headerset); |
| if (DBG) Log.d(TAG, "Connection results" + headerset.getResponseCode()); |
| |
| if (headerset.getResponseCode() == ResponseCodes.OBEX_HTTP_OK) { |
| if (DBG) { |
| Log.d(TAG, "Connection Successful"); |
| } |
| mConnected = true; |
| mCallback.sendMessage(MceStateMachine.MSG_MAS_CONNECTED); |
| } else { |
| disconnect(); |
| } |
| |
| } catch (IOException e) { |
| Log.e(TAG, "Caught an exception " + e.toString()); |
| disconnect(); |
| } |
| } |
| |
| private void disconnect() { |
| if (mSession != null) { |
| try { |
| mSession.disconnect(null); |
| } catch (IOException e) { |
| Log.e(TAG, "Caught an exception while disconnecting:" + e.toString()); |
| } |
| |
| try { |
| mSession.close(); |
| } catch (IOException e) { |
| Log.e(TAG, "Caught an exception while closing:" + e.toString()); |
| } |
| } |
| |
| mConnected = false; |
| mCallback.sendMessage(MceStateMachine.MSG_MAS_DISCONNECTED); |
| } |
| |
| private void executeRequest(Request request) { |
| try { |
| request.execute(mSession); |
| mCallback.sendMessage(MceStateMachine.MSG_MAS_REQUEST_COMPLETED, request); |
| } catch (IOException e) { |
| if (DBG) { |
| Log.d(TAG, "Request failed: " + request); |
| } |
| // Disconnect to cleanup. |
| disconnect(); |
| } |
| } |
| |
| public boolean makeRequest(Request request) { |
| if (DBG) { |
| Log.d(TAG, "makeRequest called with: " + request); |
| } |
| |
| boolean status = mHandler.sendMessage(mHandler.obtainMessage(REQUEST, request)); |
| if (!status) { |
| Log.e(TAG, "Adding messages failed, state: " + mConnected); |
| return false; |
| } |
| return true; |
| } |
| |
| public void shutdown() { |
| mHandler.obtainMessage(DISCONNECT).sendToTarget(); |
| mThread.quitSafely(); |
| } |
| |
| public enum CharsetType { |
| NATIVE, UTF_8; |
| } |
| |
| SdpMasRecord getSdpMasRecord() { |
| return mSdpMasRecord; |
| } |
| |
| private static class MasClientHandler extends Handler { |
| WeakReference<MasClient> mInst; |
| |
| MasClientHandler(Looper looper, MasClient inst) { |
| super(looper); |
| mInst = new WeakReference<>(inst); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| MasClient inst = mInst.get(); |
| switch (msg.what) { |
| case CONNECT: |
| if (!inst.mConnected) { |
| inst.connect(); |
| } |
| break; |
| |
| case DISCONNECT: |
| if (inst.mConnected) { |
| inst.disconnect(); |
| } |
| break; |
| |
| case REQUEST: |
| if (inst.mConnected) { |
| inst.executeRequest((Request) msg.obj); |
| } |
| break; |
| } |
| } |
| } |
| |
| } |