| // Copyright 2017 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 "device/fido/fido_discovery.h" |
| |
| #include <utility> |
| |
| #include "build/build_config.h" |
| #include "device/fido/fido_ble_discovery.h" |
| #include "device/fido/fido_device.h" |
| |
| // HID is not supported on Android. |
| #if !defined(OS_ANDROID) |
| #include "device/fido/fido_hid_discovery.h" |
| #endif // !defined(OS_ANDROID) |
| |
| namespace device { |
| |
| namespace { |
| |
| std::unique_ptr<FidoDiscovery> CreateFidoDiscoveryImpl( |
| FidoTransportProtocol transport, |
| service_manager::Connector* connector) { |
| switch (transport) { |
| case FidoTransportProtocol::kUsbHumanInterfaceDevice: |
| #if !defined(OS_ANDROID) |
| DCHECK(connector); |
| return std::make_unique<FidoHidDiscovery>(connector); |
| #else |
| NOTREACHED() << "USB HID not supported on Android."; |
| return nullptr; |
| #endif // !defined(OS_ANDROID) |
| case FidoTransportProtocol::kBluetoothLowEnergy: |
| return std::make_unique<FidoBleDiscovery>(); |
| // FidoCaBleDiscovery is not constructed using FidoDiscovery factory |
| // function and instead constructed in FidoGetAssertionRequestHandler as it |
| // requires extensions passed on from the relying party. |
| case FidoTransportProtocol::kCloudAssistedBluetoothLowEnergy: |
| NOTREACHED() |
| << "Cable discovery is not constructed using factory method."; |
| return nullptr; |
| case FidoTransportProtocol::kNearFieldCommunication: |
| // TODO(https://crbug.com/825949): Add NFC support. |
| return nullptr; |
| case FidoTransportProtocol::kInternal: |
| NOTREACHED() << "Internal authenticators should be handled separately."; |
| return nullptr; |
| } |
| NOTREACHED() << "Unhandled transport type"; |
| return nullptr; |
| } |
| |
| } // namespace |
| |
| FidoDiscovery::Observer::~Observer() = default; |
| |
| // static |
| FidoDiscovery::FactoryFuncPtr FidoDiscovery::g_factory_func_ = |
| &CreateFidoDiscoveryImpl; |
| |
| // static |
| std::unique_ptr<FidoDiscovery> FidoDiscovery::Create( |
| FidoTransportProtocol transport, |
| service_manager::Connector* connector) { |
| return (*g_factory_func_)(transport, connector); |
| } |
| |
| FidoDiscovery::FidoDiscovery(FidoTransportProtocol transport) |
| : transport_(transport) {} |
| |
| FidoDiscovery::~FidoDiscovery() = default; |
| |
| void FidoDiscovery::Start() { |
| DCHECK_EQ(state_, State::kIdle); |
| state_ = State::kStarting; |
| // TODO(hongjunchoi): Fix so that NotifiyStarted() is never called |
| // synchronously after StartInternal(). |
| // See: https://crbug.com/823686 |
| StartInternal(); |
| } |
| |
| void FidoDiscovery::NotifyDiscoveryStarted(bool success) { |
| DCHECK_EQ(state_, State::kStarting); |
| if (success) |
| state_ = State::kRunning; |
| if (!observer_) |
| return; |
| observer_->DiscoveryStarted(this, success); |
| } |
| |
| void FidoDiscovery::NotifyDeviceAdded(FidoDevice* device) { |
| DCHECK_NE(state_, State::kIdle); |
| if (!observer_) |
| return; |
| observer_->DeviceAdded(this, device); |
| } |
| |
| void FidoDiscovery::NotifyDeviceRemoved(FidoDevice* device) { |
| DCHECK_NE(state_, State::kIdle); |
| if (!observer_) |
| return; |
| observer_->DeviceRemoved(this, device); |
| } |
| |
| std::vector<FidoDevice*> FidoDiscovery::GetDevices() { |
| std::vector<FidoDevice*> devices; |
| devices.reserve(devices_.size()); |
| for (const auto& device : devices_) |
| devices.push_back(device.second.get()); |
| return devices; |
| } |
| |
| std::vector<const FidoDevice*> FidoDiscovery::GetDevices() const { |
| std::vector<const FidoDevice*> devices; |
| devices.reserve(devices_.size()); |
| for (const auto& device : devices_) |
| devices.push_back(device.second.get()); |
| return devices; |
| } |
| |
| FidoDevice* FidoDiscovery::GetDevice(base::StringPiece device_id) { |
| return const_cast<FidoDevice*>( |
| static_cast<const FidoDiscovery*>(this)->GetDevice(device_id)); |
| } |
| |
| const FidoDevice* FidoDiscovery::GetDevice(base::StringPiece device_id) const { |
| auto found = devices_.find(device_id); |
| return found != devices_.end() ? found->second.get() : nullptr; |
| } |
| |
| bool FidoDiscovery::AddDevice(std::unique_ptr<FidoDevice> device) { |
| std::string device_id = device->GetId(); |
| const auto result = devices_.emplace(std::move(device_id), std::move(device)); |
| if (result.second) |
| NotifyDeviceAdded(result.first->second.get()); |
| return result.second; |
| } |
| |
| bool FidoDiscovery::RemoveDevice(base::StringPiece device_id) { |
| auto found = devices_.find(device_id); |
| if (found == devices_.end()) |
| return false; |
| |
| auto device = std::move(found->second); |
| devices_.erase(found); |
| NotifyDeviceRemoved(device.get()); |
| return true; |
| } |
| |
| // ScopedFidoDiscoveryFactory ------------------------------------------------- |
| |
| namespace internal { |
| |
| ScopedFidoDiscoveryFactory::ScopedFidoDiscoveryFactory() { |
| DCHECK(!g_current_factory); |
| g_current_factory = this; |
| original_factory_func_ = |
| std::exchange(FidoDiscovery::g_factory_func_, |
| &ForwardCreateFidoDiscoveryToCurrentFactory); |
| } |
| |
| ScopedFidoDiscoveryFactory::~ScopedFidoDiscoveryFactory() { |
| g_current_factory = nullptr; |
| FidoDiscovery::g_factory_func_ = original_factory_func_; |
| } |
| |
| // static |
| std::unique_ptr<FidoDiscovery> |
| ScopedFidoDiscoveryFactory::ForwardCreateFidoDiscoveryToCurrentFactory( |
| FidoTransportProtocol transport, |
| ::service_manager::Connector* connector) { |
| DCHECK(g_current_factory); |
| return g_current_factory->CreateFidoDiscovery(transport, connector); |
| } |
| |
| // static |
| ScopedFidoDiscoveryFactory* ScopedFidoDiscoveryFactory::g_current_factory = |
| nullptr; |
| |
| } // namespace internal |
| } // namespace device |