| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "components/pairing/bluetooth_controller_pairing_controller.h" |
| |
| #include "base/bind.h" |
| #include "base/logging.h" |
| #include "base/strings/string_util.h" |
| #include "base/strings/stringprintf.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "components/pairing/bluetooth_pairing_constants.h" |
| #include "components/pairing/pairing_api.pb.h" |
| #include "device/bluetooth/bluetooth_adapter_factory.h" |
| #include "device/bluetooth/bluetooth_discovery_session.h" |
| #include "net/base/io_buffer.h" |
| |
| namespace { |
| const int kReceiveSize = 16384; |
| } |
| |
| namespace pairing_chromeos { |
| |
| BluetoothControllerPairingController::BluetoothControllerPairingController() |
| : current_stage_(STAGE_NONE), |
| got_initial_status_(false), |
| proto_decoder_(new ProtoDecoder(this)), |
| ptr_factory_(this) { |
| } |
| |
| BluetoothControllerPairingController::~BluetoothControllerPairingController() { |
| Reset(); |
| } |
| |
| device::BluetoothDevice* BluetoothControllerPairingController::GetController() { |
| DCHECK(!controller_device_id_.empty()); |
| device::BluetoothDevice* device = adapter_->GetDevice(controller_device_id_); |
| if (!device) { |
| LOG(ERROR) << "Lost connection to controller."; |
| ChangeStage(STAGE_ESTABLISHING_CONNECTION_ERROR); |
| } |
| |
| return device; |
| } |
| |
| void BluetoothControllerPairingController::ChangeStage(Stage new_stage) { |
| if (current_stage_ == new_stage) |
| return; |
| current_stage_ = new_stage; |
| FOR_EACH_OBSERVER(ControllerPairingController::Observer, observers_, |
| PairingStageChanged(new_stage)); |
| } |
| |
| void BluetoothControllerPairingController::Reset() { |
| got_initial_status_ = false; |
| controller_device_id_.clear(); |
| discovery_session_.reset(); |
| |
| if (socket_) { |
| socket_->Close(); |
| socket_ = NULL; |
| } |
| |
| if (adapter_) { |
| adapter_->RemoveObserver(this); |
| adapter_ = NULL; |
| } |
| } |
| |
| void BluetoothControllerPairingController::DeviceFound( |
| device::BluetoothDevice* device) { |
| DCHECK_EQ(current_stage_, STAGE_DEVICES_DISCOVERY); |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| if (StartsWith(device->GetName(), base::ASCIIToUTF16(kDeviceNamePrefix), |
| false)) { |
| discovered_devices_.insert(device->GetAddress()); |
| FOR_EACH_OBSERVER(ControllerPairingController::Observer, observers_, |
| DiscoveredDevicesListChanged()); |
| } |
| } |
| |
| void BluetoothControllerPairingController::DeviceLost( |
| device::BluetoothDevice* device) { |
| DCHECK_EQ(current_stage_, STAGE_DEVICES_DISCOVERY); |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| std::set<std::string>::iterator ix = |
| discovered_devices_.find(device->GetAddress()); |
| if (ix != discovered_devices_.end()) { |
| discovered_devices_.erase(ix); |
| FOR_EACH_OBSERVER(ControllerPairingController::Observer, observers_, |
| DiscoveredDevicesListChanged()); |
| } |
| } |
| |
| void BluetoothControllerPairingController::OnSetPowered() { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| adapter_->StartDiscoverySession( |
| base::Bind(&BluetoothControllerPairingController::OnStartDiscoverySession, |
| ptr_factory_.GetWeakPtr()), |
| base::Bind(&BluetoothControllerPairingController::OnError, |
| ptr_factory_.GetWeakPtr())); |
| } |
| |
| void BluetoothControllerPairingController::OnGetAdapter( |
| scoped_refptr<device::BluetoothAdapter> adapter) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!adapter_); |
| adapter_ = adapter; |
| adapter_->AddObserver(this); |
| |
| if (adapter_->IsPowered()) { |
| OnSetPowered(); |
| } else { |
| adapter_->SetPowered( |
| true, |
| base::Bind(&BluetoothControllerPairingController::OnSetPowered, |
| ptr_factory_.GetWeakPtr()), |
| base::Bind(&BluetoothControllerPairingController::OnError, |
| ptr_factory_.GetWeakPtr())); |
| } |
| } |
| |
| void BluetoothControllerPairingController::OnStartDiscoverySession( |
| scoped_ptr<device::BluetoothDiscoverySession> discovery_session) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| discovery_session_ = discovery_session.Pass(); |
| ChangeStage(STAGE_DEVICES_DISCOVERY); |
| |
| device::BluetoothAdapter::DeviceList device_list = adapter_->GetDevices(); |
| for (device::BluetoothAdapter::DeviceList::iterator ix = device_list.begin(); |
| ix != device_list.end(); ++ix) { |
| DeviceFound(*ix); |
| } |
| } |
| |
| void BluetoothControllerPairingController::OnConnect() { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| device::BluetoothDevice* device = GetController(); |
| if (device) { |
| device->ConnectToService( |
| device::BluetoothUUID(kPairingServiceUUID), |
| base::Bind(&BluetoothControllerPairingController::OnConnectToService, |
| ptr_factory_.GetWeakPtr()), |
| base::Bind(&BluetoothControllerPairingController::OnErrorWithMessage, |
| ptr_factory_.GetWeakPtr())); |
| } |
| } |
| |
| void BluetoothControllerPairingController::OnConnectToService( |
| scoped_refptr<device::BluetoothSocket> socket) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| socket_ = socket; |
| |
| socket_->Receive( |
| kReceiveSize, |
| base::Bind(&BluetoothControllerPairingController::OnReceiveComplete, |
| ptr_factory_.GetWeakPtr()), |
| base::Bind(&BluetoothControllerPairingController::OnReceiveError, |
| ptr_factory_.GetWeakPtr())); |
| } |
| |
| void BluetoothControllerPairingController::OnSendComplete(int bytes_sent) {} |
| |
| void BluetoothControllerPairingController::OnReceiveComplete( |
| int bytes, scoped_refptr<net::IOBuffer> io_buffer) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| proto_decoder_->DecodeIOBuffer(bytes, io_buffer); |
| |
| socket_->Receive( |
| kReceiveSize, |
| base::Bind(&BluetoothControllerPairingController::OnReceiveComplete, |
| ptr_factory_.GetWeakPtr()), |
| base::Bind(&BluetoothControllerPairingController::OnReceiveError, |
| ptr_factory_.GetWeakPtr())); |
| } |
| |
| void BluetoothControllerPairingController::OnError() { |
| // TODO(zork): Add a stage for initialization error. (http://crbug.com/405744) |
| LOG(ERROR) << "Pairing initialization failed"; |
| Reset(); |
| } |
| |
| void BluetoothControllerPairingController::OnErrorWithMessage( |
| const std::string& message) { |
| // TODO(zork): Add a stage for initialization error. (http://crbug.com/405744) |
| LOG(ERROR) << message; |
| Reset(); |
| } |
| |
| void BluetoothControllerPairingController::OnConnectError( |
| device::BluetoothDevice::ConnectErrorCode error_code) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| device::BluetoothDevice* device = GetController(); |
| |
| if (device && device->IsPaired()) { |
| // The connection attempt is only used to start the pairing between the |
| // devices. If the connection fails, it's not a problem as long as pairing |
| // was successful. |
| OnConnect(); |
| } |
| } |
| |
| void BluetoothControllerPairingController::OnReceiveError( |
| device::BluetoothSocket::ErrorReason reason, |
| const std::string& error_message) { |
| LOG(ERROR) << reason << ", " << error_message; |
| Reset(); |
| } |
| |
| void BluetoothControllerPairingController::AddObserver( |
| ControllerPairingController::Observer* observer) { |
| observers_.AddObserver(observer); |
| } |
| |
| void BluetoothControllerPairingController::RemoveObserver( |
| ControllerPairingController::Observer* observer) { |
| observers_.RemoveObserver(observer); |
| } |
| |
| ControllerPairingController::Stage |
| BluetoothControllerPairingController::GetCurrentStage() { |
| return current_stage_; |
| } |
| |
| void BluetoothControllerPairingController::StartPairing() { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(current_stage_ == STAGE_NONE || |
| current_stage_ == STAGE_DEVICE_NOT_FOUND || |
| current_stage_ == STAGE_ESTABLISHING_CONNECTION_ERROR || |
| current_stage_ == STAGE_HOST_ENROLLMENT_ERROR); |
| // TODO(zork): Add a stage for no bluetooth. (http://crbug.com/405744) |
| if (!device::BluetoothAdapterFactory::IsBluetoothAdapterAvailable()) { |
| ChangeStage(STAGE_DEVICE_NOT_FOUND); |
| return; |
| } |
| |
| device::BluetoothAdapterFactory::GetAdapter( |
| base::Bind(&BluetoothControllerPairingController::OnGetAdapter, |
| ptr_factory_.GetWeakPtr())); |
| |
| } |
| |
| ControllerPairingController::DeviceIdList |
| BluetoothControllerPairingController::GetDiscoveredDevices() { |
| DCHECK_EQ(current_stage_, STAGE_DEVICES_DISCOVERY); |
| return DeviceIdList(discovered_devices_.begin(), discovered_devices_.end()); |
| } |
| |
| void BluetoothControllerPairingController::ChooseDeviceForPairing( |
| const std::string& device_id) { |
| DCHECK_EQ(current_stage_, STAGE_DEVICES_DISCOVERY); |
| DCHECK(discovered_devices_.count(device_id)); |
| discovery_session_.reset(); |
| controller_device_id_ = device_id; |
| |
| device::BluetoothDevice* device = GetController(); |
| |
| if (device) { |
| ChangeStage(STAGE_ESTABLISHING_CONNECTION); |
| if (device->IsPaired()) { |
| OnConnect(); |
| } else { |
| device->Connect( |
| this, |
| base::Bind(&BluetoothControllerPairingController::OnConnect, |
| ptr_factory_.GetWeakPtr()), |
| base::Bind(&BluetoothControllerPairingController::OnConnectError, |
| ptr_factory_.GetWeakPtr())); |
| } |
| } |
| } |
| |
| void BluetoothControllerPairingController::RepeatDiscovery() { |
| DCHECK(current_stage_ == STAGE_DEVICE_NOT_FOUND || |
| current_stage_ == STAGE_ESTABLISHING_CONNECTION_ERROR || |
| current_stage_ == STAGE_HOST_ENROLLMENT_ERROR); |
| Reset(); |
| StartPairing(); |
| } |
| |
| std::string BluetoothControllerPairingController::GetConfirmationCode() { |
| DCHECK_EQ(current_stage_, STAGE_WAITING_FOR_CODE_CONFIRMATION); |
| DCHECK(!confirmation_code_.empty()); |
| return confirmation_code_; |
| } |
| |
| void BluetoothControllerPairingController::SetConfirmationCodeIsCorrect( |
| bool correct) { |
| DCHECK_EQ(current_stage_, STAGE_WAITING_FOR_CODE_CONFIRMATION); |
| |
| device::BluetoothDevice* device = GetController(); |
| if (!device) |
| return; |
| |
| if (correct) { |
| device->ConfirmPairing(); |
| // Once pairing is confirmed, the connection will either be successful, or |
| // fail. Either case is acceptable as long as the devices are paired. |
| } else { |
| device->RejectPairing(); |
| controller_device_id_.clear(); |
| RepeatDiscovery(); |
| } |
| } |
| |
| void BluetoothControllerPairingController::SetHostConfiguration( |
| bool accepted_eula, |
| const std::string& lang, |
| const std::string& timezone, |
| bool send_reports, |
| const std::string& keyboard_layout) { |
| // TODO(zork): Get configuration from UI and send to Host. |
| // (http://crbug.com/405744) |
| } |
| |
| void BluetoothControllerPairingController::OnAuthenticationDone( |
| const std::string& domain, |
| const std::string& auth_token) { |
| DCHECK_EQ(current_stage_, STAGE_WAITING_FOR_CREDENTIALS); |
| |
| pairing_api::PairDevices pair_devices; |
| pair_devices.set_api_version(kPairingAPIVersion); |
| pair_devices.mutable_parameters()->set_admin_access_token(auth_token); |
| |
| int size = 0; |
| scoped_refptr<net::IOBuffer> io_buffer( |
| ProtoDecoder::SendPairDevices(pair_devices, &size)); |
| |
| socket_->Send( |
| io_buffer, size, |
| base::Bind(&BluetoothControllerPairingController::OnSendComplete, |
| ptr_factory_.GetWeakPtr()), |
| base::Bind(&BluetoothControllerPairingController::OnErrorWithMessage, |
| ptr_factory_.GetWeakPtr())); |
| ChangeStage(STAGE_HOST_ENROLLMENT_IN_PROGRESS); |
| } |
| |
| void BluetoothControllerPairingController::StartSession() { |
| DCHECK_EQ(current_stage_, STAGE_PAIRING_DONE); |
| ChangeStage(STAGE_FINISHED); |
| } |
| |
| // ProtoDecoder::Observer: |
| void BluetoothControllerPairingController::OnHostStatusMessage( |
| const pairing_api::HostStatus& message) { |
| if (got_initial_status_) { |
| // TODO(zork): Check that the domain matches. (http://crbug.com/405761) |
| // TODO(zork): Handling updating stages (http://crbug.com/405754). |
| pairing_api::CompleteSetup complete_setup; |
| complete_setup.set_api_version(kPairingAPIVersion); |
| // TODO(zork): Get AddAnother from UI (http://crbug.com/405757) |
| complete_setup.mutable_parameters()->set_add_another(false); |
| |
| int size = 0; |
| scoped_refptr<net::IOBuffer> io_buffer( |
| ProtoDecoder::SendCompleteSetup(complete_setup, &size)); |
| |
| socket_->Send( |
| io_buffer, size, |
| base::Bind(&BluetoothControllerPairingController::OnSendComplete, |
| ptr_factory_.GetWeakPtr()), |
| base::Bind( |
| &BluetoothControllerPairingController::OnErrorWithMessage, |
| ptr_factory_.GetWeakPtr())); |
| ChangeStage(STAGE_PAIRING_DONE); |
| } else { |
| got_initial_status_ = true; |
| |
| // TODO(zork): Check domain. (http://crbug.com/405761) |
| ChangeStage(STAGE_WAITING_FOR_CREDENTIALS); |
| } |
| } |
| |
| void BluetoothControllerPairingController::OnConfigureHostMessage( |
| const pairing_api::ConfigureHost& message) { |
| NOTREACHED(); |
| } |
| |
| void BluetoothControllerPairingController::OnPairDevicesMessage( |
| const pairing_api::PairDevices& message) { |
| NOTREACHED(); |
| } |
| |
| void BluetoothControllerPairingController::OnCompleteSetupMessage( |
| const pairing_api::CompleteSetup& message) { |
| NOTREACHED(); |
| } |
| |
| void BluetoothControllerPairingController::OnErrorMessage( |
| const pairing_api::Error& message) { |
| LOG(ERROR) << message.parameters().code() << ", " << |
| message.parameters().description(); |
| ChangeStage(STAGE_HOST_ENROLLMENT_ERROR); |
| } |
| |
| void BluetoothControllerPairingController::DeviceAdded( |
| device::BluetoothAdapter* adapter, |
| device::BluetoothDevice* device) { |
| DCHECK_EQ(adapter, adapter_.get()); |
| DeviceFound(device); |
| } |
| |
| void BluetoothControllerPairingController::DeviceRemoved( |
| device::BluetoothAdapter* adapter, |
| device::BluetoothDevice* device) { |
| DCHECK_EQ(adapter, adapter_.get()); |
| DeviceLost(device); |
| } |
| |
| void BluetoothControllerPairingController::RequestPinCode( |
| device::BluetoothDevice* device) { |
| // Disallow unknown device. |
| device->RejectPairing(); |
| } |
| |
| void BluetoothControllerPairingController::RequestPasskey( |
| device::BluetoothDevice* device) { |
| // Disallow unknown device. |
| device->RejectPairing(); |
| } |
| |
| void BluetoothControllerPairingController::DisplayPinCode( |
| device::BluetoothDevice* device, |
| const std::string& pincode) { |
| // Disallow unknown device. |
| device->RejectPairing(); |
| } |
| |
| void BluetoothControllerPairingController::DisplayPasskey( |
| device::BluetoothDevice* device, |
| uint32 passkey) { |
| // Disallow unknown device. |
| device->RejectPairing(); |
| } |
| |
| void BluetoothControllerPairingController::KeysEntered( |
| device::BluetoothDevice* device, |
| uint32 entered) { |
| // Disallow unknown device. |
| device->RejectPairing(); |
| } |
| |
| void BluetoothControllerPairingController::ConfirmPasskey( |
| device::BluetoothDevice* device, |
| uint32 passkey) { |
| confirmation_code_ = base::StringPrintf("%06d", passkey); |
| ChangeStage(STAGE_WAITING_FOR_CODE_CONFIRMATION); |
| } |
| |
| void BluetoothControllerPairingController::AuthorizePairing( |
| device::BluetoothDevice* device) { |
| // Disallow unknown device. |
| device->RejectPairing(); |
| } |
| |
| } // namespace pairing_chromeos |