diff options
Diffstat (limited to 'components/pairing/bluetooth_controller_pairing_controller.cc')
| -rw-r--r-- | components/pairing/bluetooth_controller_pairing_controller.cc | 463 |
1 files changed, 463 insertions, 0 deletions
diff --git a/components/pairing/bluetooth_controller_pairing_controller.cc b/components/pairing/bluetooth_controller_pairing_controller.cc new file mode 100644 index 0000000..c90dfb7 --- /dev/null +++ b/components/pairing/bluetooth_controller_pairing_controller.cc @@ -0,0 +1,463 @@ +// 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 char* kFakeEnrollmentDomain = "http://fake.com"; +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::OnAuthenticationDone( + const chromeos::UserContext& user_context, + content::BrowserContext* browser_context) { + DCHECK_EQ(current_stage_, STAGE_WAITING_FOR_CREDENTIALS); + + // TODO(zork): Get configuration from UI and send to Host. + // (http://crbug.com/405744) + + // TODO(zork): Get proper credentials. (http://crbug.com/405744) + // For now, send a fake domain. + pairing_api::PairDevices pair_devices; + pair_devices.set_api_version(kPairingAPIVersion); + pair_devices.mutable_parameters()->set_admin_access_token( + kFakeEnrollmentDomain); + + 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_) { + if (message.parameters().has_domain()) { + // TODO(zork): Remove this if we don't actually need the domain for UI. + // (http://crbug.com/405761) + if (message.parameters().domain() == kFakeEnrollmentDomain) { + 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 { + ChangeStage(STAGE_HOST_ENROLLMENT_ERROR); + } + } else { + ChangeStage(STAGE_HOST_ENROLLMENT_ERROR); + } + } else { + got_initial_status_ = true; + + // TODO(zork): Check domain. (http://crbug.com/405761) + + // TODO(zork): Handling updating stages (http://crbug.com/405754). + 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 |