/* * 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.pbapclient; import android.accounts.Account; import android.accounts.AccountManager; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothSocket; import android.bluetooth.BluetoothUuid; import android.bluetooth.SdpPseRecord; import android.content.Context; import android.os.Handler; import android.os.Looper; import android.os.Message; import android.provider.CallLog; import android.util.Log; import com.android.bluetooth.BluetoothObexTransport; import com.android.bluetooth.R; import java.io.IOException; import javax.obex.ClientSession; import javax.obex.HeaderSet; import javax.obex.ResponseCodes; /* Bluetooth/pbapclient/PbapClientConnectionHandler is responsible * for connecting, disconnecting and downloading contacts from the * PBAP PSE when commanded. It receives all direction from the * controlling state machine. */ class PbapClientConnectionHandler extends Handler { static final String TAG = "PBAP PCE handler"; static final boolean DBG = true; static final int MSG_CONNECT = 1; static final int MSG_DISCONNECT = 2; static final int MSG_DOWNLOAD = 3; // The following constants are pulled from the Bluetooth Phone Book Access Profile specification // 1.1 private static final byte[] PBAP_TARGET = new byte[]{ 0x79, 0x61, 0x35, (byte) 0xf0, (byte) 0xf0, (byte) 0xc5, 0x11, (byte) 0xd8, 0x09, 0x66, 0x08, 0x00, 0x20, 0x0c, (byte) 0x9a, 0x66 }; private static final int PBAP_FEATURE_DEFAULT_IMAGE_FORMAT = 0x00000200; private static final int PBAP_FEATURE_BROWSING = 0x00000002; private static final int PBAP_FEATURE_DOWNLOADING = 0x00000001; private static final int PBAP_SUPPORTED_FEATURE = PBAP_FEATURE_DEFAULT_IMAGE_FORMAT | PBAP_FEATURE_BROWSING | PBAP_FEATURE_DOWNLOADING; private static final int PBAP_V1_2 = 0x0102; private static final int L2CAP_INVALID_PSM = -1; public static final String PB_PATH = "telecom/pb.vcf"; public static final String MCH_PATH = "telecom/mch.vcf"; public static final String ICH_PATH = "telecom/ich.vcf"; public static final String OCH_PATH = "telecom/och.vcf"; public static final byte VCARD_TYPE_21 = 0; public static final byte VCARD_TYPE_30 = 1; private Account mAccount; private AccountManager mAccountManager; private BluetoothSocket mSocket; private final BluetoothAdapter mAdapter; private final BluetoothDevice mDevice; // PSE SDP Record for current device. private SdpPseRecord mPseRec = null; private ClientSession mObexSession; private Context mContext; private BluetoothPbapObexAuthenticator mAuth = null; private final PbapClientStateMachine mPbapClientStateMachine; private boolean mAccountCreated; PbapClientConnectionHandler(Looper looper, Context context, PbapClientStateMachine stateMachine, BluetoothDevice device) { super(looper); mAdapter = BluetoothAdapter.getDefaultAdapter(); mDevice = device; mContext = context; mPbapClientStateMachine = stateMachine; mAuth = new BluetoothPbapObexAuthenticator(this); mAccountManager = AccountManager.get(mPbapClientStateMachine.getContext()); mAccount = new Account(mDevice.getAddress(), mContext.getString( R.string.pbap_account_type)); } /** * Constructs PCEConnectionHandler object * * @param Builder To build BluetoothPbapClientHandler Instance. */ PbapClientConnectionHandler(Builder pceHandlerbuild) { super(pceHandlerbuild.looper); mAdapter = BluetoothAdapter.getDefaultAdapter(); mDevice = pceHandlerbuild.device; mContext = pceHandlerbuild.context; mPbapClientStateMachine = pceHandlerbuild.clientStateMachine; mAuth = new BluetoothPbapObexAuthenticator(this); mAccountManager = AccountManager.get(mPbapClientStateMachine.getContext()); mAccount = new Account(mDevice.getAddress(), mContext.getString( R.string.pbap_account_type)); } public static class Builder { private Looper looper; private Context context; private BluetoothDevice device; private PbapClientStateMachine clientStateMachine; public Builder setLooper(Looper loop) { this.looper = loop; return this; } public Builder setClientSM(PbapClientStateMachine clientStateMachine) { this.clientStateMachine = clientStateMachine; return this; } public Builder setRemoteDevice(BluetoothDevice device) { this.device = device; return this; } public Builder setContext(Context context) { this.context = context; return this; } public PbapClientConnectionHandler build() { PbapClientConnectionHandler pbapClientHandler = new PbapClientConnectionHandler(this); return pbapClientHandler; } } @Override public void handleMessage(Message msg) { if (DBG) Log.d(TAG, "Handling Message = " + msg.what); switch (msg.what) { case MSG_CONNECT: mPseRec = (SdpPseRecord) msg.obj; /* To establish a connection, first open a socket and then create an OBEX session */ if (connectSocket()) { if (DBG) Log.d(TAG, "Socket connected"); } else { Log.w(TAG, "Socket CONNECT Failure "); mPbapClientStateMachine.obtainMessage( PbapClientStateMachine.MSG_CONNECTION_FAILED).sendToTarget(); return; } if (connectObexSession()) { mPbapClientStateMachine.obtainMessage( PbapClientStateMachine.MSG_CONNECTION_COMPLETE).sendToTarget(); } else { mPbapClientStateMachine.obtainMessage( PbapClientStateMachine.MSG_CONNECTION_FAILED).sendToTarget(); } break; case MSG_DISCONNECT: if (DBG) Log.d(TAG, "Starting Disconnect"); try { if (mObexSession != null) { if (DBG) Log.d(TAG, "obexSessionDisconnect" + mObexSession); mObexSession.disconnect(null); mObexSession.close(); } if (DBG) Log.d(TAG, "Closing Socket"); closeSocket(); } catch (IOException e) { Log.w(TAG, "DISCONNECT Failure ", e); } if (DBG) Log.d(TAG, "Completing Disconnect"); removeAccount(mAccount); mContext.getContentResolver() .delete(CallLog.Calls.CONTENT_URI, null, null); mPbapClientStateMachine.obtainMessage( PbapClientStateMachine.MSG_CONNECTION_CLOSED).sendToTarget(); break; case MSG_DOWNLOAD: try { mAccountCreated = addAccount(mAccount); if (mAccountCreated == false) { Log.e(TAG, "Account creation failed."); return; } // Start at contact 1 to exclued Owner Card PBAP 1.1 sec 3.1.5.2 BluetoothPbapRequestPullPhoneBook request = new BluetoothPbapRequestPullPhoneBook(PB_PATH, mAccount, 0, VCARD_TYPE_30, 0, 1); request.execute(mObexSession); PhonebookPullRequest processor = new PhonebookPullRequest(mPbapClientStateMachine.getContext(), mAccount); processor.setResults(request.getList()); processor.onPullComplete(); downloadCallLog(MCH_PATH); downloadCallLog(ICH_PATH); downloadCallLog(OCH_PATH); } catch (IOException e) { Log.w(TAG, "DOWNLOAD_CONTACTS Failure" + e.toString()); } break; default: Log.w(TAG, "Received Unexpected Message"); } return; } /* Utilize SDP, if available, to create a socket connection over L2CAP, RFCOMM specified * channel, or RFCOMM default channel. */ private boolean connectSocket() { try { /* Use BluetoothSocket to connect */ if (mPseRec == null) { // BackWardCompatability: Fall back to create RFCOMM through UUID. Log.v(TAG, "connectSocket: UUID: " + BluetoothUuid.PBAP_PSE.getUuid()); mSocket = mDevice.createRfcommSocketToServiceRecord( BluetoothUuid.PBAP_PSE.getUuid()); } else if (mPseRec.getL2capPsm() != L2CAP_INVALID_PSM) { Log.v(TAG, "connectSocket: PSM: " + mPseRec.getL2capPsm()); mSocket = mDevice.createL2capSocket(mPseRec.getL2capPsm()); } else { Log.v(TAG, "connectSocket: channel: " + mPseRec.getRfcommChannelNumber()); mSocket = mDevice.createRfcommSocket(mPseRec.getRfcommChannelNumber()); } if (mSocket != null) { mSocket.connect(); return true; } else { Log.w(TAG, "Could not create socket"); } } catch (IOException e) { Log.e(TAG, "Error while connecting socket", e); } return false; } /* Connect an OBEX session over the already connected socket. First establish an OBEX Transport * abstraction, then establish a Bluetooth Authenticator, and finally issue the connect call */ private boolean connectObexSession() { boolean connectionSuccessful = false; try { if (DBG) Log.v(TAG, "Start Obex Client Session"); BluetoothObexTransport transport = new BluetoothObexTransport(mSocket); mObexSession = new ClientSession(transport); mObexSession.setAuthenticator(mAuth); HeaderSet connectionRequest = new HeaderSet(); connectionRequest.setHeader(HeaderSet.TARGET, PBAP_TARGET); if (mPseRec != null) { if (DBG) { Log.d(TAG, "Remote PbapSupportedFeatures " + mPseRec.getSupportedFeatures()); } ObexAppParameters oap = new ObexAppParameters(); if (mPseRec.getProfileVersion() >= PBAP_V1_2) { oap.add(BluetoothPbapRequest.OAP_TAGID_PBAP_SUPPORTED_FEATURES, PBAP_SUPPORTED_FEATURE); } oap.addToHeaderSet(connectionRequest); } HeaderSet connectionResponse = mObexSession.connect(connectionRequest); connectionSuccessful = (connectionResponse.getResponseCode() == ResponseCodes.OBEX_HTTP_OK); if (DBG) Log.d(TAG, "Success = " + Boolean.toString(connectionSuccessful)); } catch (IOException e) { Log.w(TAG, "CONNECT Failure " + e.toString()); closeSocket(); } return connectionSuccessful; } public void abort() { // Perform forced cleanup, it is ok if the handler throws an exception this will free the // handler to complete what it is doing and finish with cleanup. closeSocket(); this.getLooper().getThread().interrupt(); } private void closeSocket() { try { if (mSocket != null) { if (DBG) Log.d(TAG, "Closing socket" + mSocket); mSocket.close(); mSocket = null; } } catch (IOException e) { Log.e(TAG, "Error when closing socket", e); mSocket = null; } } void downloadCallLog(String path) { try { BluetoothPbapRequestPullPhoneBook request = new BluetoothPbapRequestPullPhoneBook(path, mAccount, 0, VCARD_TYPE_30, 0, 0); request.execute(mObexSession); CallLogPullRequest processor = new CallLogPullRequest(mPbapClientStateMachine.getContext(), path); processor.setResults(request.getList()); processor.onPullComplete(); } catch (IOException e) { Log.w(TAG, "Download call log failure"); } } private boolean addAccount(Account account) { if (mAccountManager.addAccountExplicitly(account, null, null)) { if (DBG) { Log.d(TAG, "Added account " + mAccount); } return true; } return false; } private void removeAccount(Account acc) { if (mAccountManager.removeAccountExplicitly(acc)) { if (DBG) { Log.d(TAG, "Removed account " + acc); } } else { Log.e(TAG, "Failed to remove account " + mAccount); } } }