| // Copyright 2021 Google LLC |
| // |
| // 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 |
| // |
| // https://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. |
| |
| #ifndef CORE_INTERNAL_P2P_CLUSTER_PCP_HANDLER_H_ |
| #define CORE_INTERNAL_P2P_CLUSTER_PCP_HANDLER_H_ |
| |
| #include <memory> |
| #include <vector> |
| |
| #include "connections/implementation/base_pcp_handler.h" |
| #include "connections/implementation/ble_advertisement.h" |
| #include "connections/implementation/bluetooth_device_name.h" |
| #include "connections/implementation/bwu_manager.h" |
| #include "connections/implementation/client_proxy.h" |
| #include "connections/implementation/endpoint_channel_manager.h" |
| #include "connections/implementation/endpoint_manager.h" |
| #include "connections/implementation/injected_bluetooth_device_store.h" |
| #include "connections/implementation/mediums/bluetooth_classic.h" |
| #include "connections/implementation/mediums/mediums.h" |
| #ifdef NO_WEBRTC |
| #include "connections/implementation/mediums/webrtc_stub.h" |
| #include "connections/implementation/mediums/webrtc_socket_stub.h" |
| #else |
| #include "connections/implementation/mediums/webrtc.h" |
| #include "connections/implementation/mediums/webrtc_socket.h" |
| #endif |
| #include "connections/implementation/pcp.h" |
| #include "connections/implementation/wifi_lan_service_info.h" |
| #include "connections/strategy.h" |
| #include "internal/platform/byte_array.h" |
| #include "internal/platform/bluetooth_classic.h" |
| #include "internal/platform/wifi_lan.h" |
| |
| namespace location { |
| namespace nearby { |
| namespace connections { |
| |
| // Concrete implementation of the PCPHandler for the P2P_CLUSTER PCP. This PCP |
| // is reserved for mediums that can connect to multiple devices simultaneously |
| // and all devices are considered equal. For asymmetric mediums, where one |
| // device is a server and the others are clients, use P2PStarPCPHandler instead. |
| // |
| // Currently, this implementation advertises/discovers over Bluetooth and |
| // connects over Bluetooth. |
| class P2pClusterPcpHandler : public BasePcpHandler { |
| public: |
| P2pClusterPcpHandler( |
| Mediums* mediums, EndpointManager* endpoint_manager, |
| EndpointChannelManager* channel_manager, BwuManager* bwu_manager, |
| InjectedBluetoothDeviceStore& injected_bluetooth_device_store, |
| Pcp pcp = Pcp::kP2pCluster); |
| ~P2pClusterPcpHandler() override = default; |
| |
| protected: |
| std::vector<proto::connections::Medium> GetConnectionMediumsByPriority() |
| override; |
| proto::connections::Medium GetDefaultUpgradeMedium() override; |
| |
| // @PCPHandlerThread |
| BasePcpHandler::StartOperationResult StartAdvertisingImpl( |
| ClientProxy* client, const std::string& service_id, |
| const std::string& local_endpoint_id, |
| const ByteArray& local_endpoint_info, |
| const AdvertisingOptions& advertising_options) override; |
| |
| // @PCPHandlerThread |
| Status StopAdvertisingImpl(ClientProxy* client) override; |
| |
| // @PCPHandlerThread |
| BasePcpHandler::StartOperationResult StartDiscoveryImpl( |
| ClientProxy* client, const std::string& service_id, |
| const DiscoveryOptions& discovery_options) override; |
| |
| // @PCPHandlerThread |
| Status StopDiscoveryImpl(ClientProxy* client) override; |
| |
| // @PCPHandlerThread |
| Status InjectEndpointImpl( |
| ClientProxy* client, const std::string& service_id, |
| const OutOfBandConnectionMetadata& metadata) override; |
| |
| // @PCPHandlerThread |
| BasePcpHandler::ConnectImplResult ConnectImpl( |
| ClientProxy* client, |
| BasePcpHandler::DiscoveredEndpoint* endpoint) override; |
| |
| private: |
| // Holds the state required to re-create a BleEndpoint we see on a |
| // BlePeripheral, so BlePeripheralLostHandler can call |
| // BasePcpHandler::OnEndpointLost() with the same information as was passed |
| // in to BasePCPHandler::onEndpointFound(). |
| struct BleEndpointState { |
| public: |
| BleEndpointState(const string& endpoint_id, const ByteArray& endpoint_info) |
| : endpoint_id(endpoint_id), endpoint_info(endpoint_info) {} |
| |
| std::string endpoint_id; |
| ByteArray endpoint_info; |
| }; |
| |
| using BluetoothDiscoveredDeviceCallback = |
| BluetoothClassic::DiscoveredDeviceCallback; |
| using BleDiscoveredPeripheralCallback = Ble::DiscoveredPeripheralCallback; |
| using WifiLanDiscoveredServiceCallback = WifiLan::DiscoveredServiceCallback; |
| |
| static constexpr BluetoothDeviceName::Version kBluetoothDeviceNameVersion = |
| BluetoothDeviceName::Version::kV1; |
| static constexpr BleAdvertisement::Version kBleAdvertisementVersion = |
| BleAdvertisement::Version::kV1; |
| static constexpr WifiLanServiceInfo::Version kWifiLanServiceInfoVersion = |
| WifiLanServiceInfo::Version::kV1; |
| |
| static ByteArray GenerateHash(const std::string& source, size_t size); |
| static bool ShouldAdvertiseBluetoothMacOverBle(PowerLevel power_level); |
| static bool ShouldAcceptBluetoothConnections( |
| const AdvertisingOptions& advertising_options); |
| |
| // Bluetooth |
| bool IsRecognizedBluetoothEndpoint(const std::string& name_string, |
| const std::string& service_id, |
| const BluetoothDeviceName& name) const; |
| void BluetoothDeviceDiscoveredHandler(ClientProxy* client, |
| const std::string& service_id, |
| BluetoothDevice device); |
| void BluetoothNameChangedHandler(ClientProxy* client, |
| const std::string& service_id, |
| BluetoothDevice device); |
| void BluetoothDeviceLostHandler(ClientProxy* client, |
| const std::string& service_id, |
| BluetoothDevice& device); |
| proto::connections::Medium StartBluetoothAdvertising( |
| ClientProxy* client, const std::string& service_id, |
| const ByteArray& service_id_hash, const std::string& local_endpoint_id, |
| const ByteArray& local_endpoint_info, WebRtcState web_rtc_state); |
| proto::connections::Medium StartBluetoothDiscovery( |
| BluetoothDiscoveredDeviceCallback callback, ClientProxy* client, |
| const std::string& service_id); |
| BasePcpHandler::ConnectImplResult BluetoothConnectImpl( |
| ClientProxy* client, BluetoothEndpoint* endpoint); |
| |
| // Ble |
| // Maps a BlePeripheral to its corresponding BleEndpointState. |
| absl::flat_hash_map<std::string, BleEndpointState> found_ble_endpoints_; |
| bool IsRecognizedBleEndpoint(const std::string& service_id, |
| const BleAdvertisement& advertisement) const; |
| void BlePeripheralDiscoveredHandler(ClientProxy* client, |
| BlePeripheral& peripheral, |
| const std::string& service_id, |
| const ByteArray& advertisement_bytes, |
| bool fast_advertisement); |
| void BlePeripheralLostHandler(ClientProxy* client, BlePeripheral& peripheral, |
| const std::string& service_id); |
| proto::connections::Medium StartBleAdvertising( |
| ClientProxy* client, const std::string& service_id, |
| const std::string& local_endpoint_id, |
| const ByteArray& local_endpoint_info, |
| const AdvertisingOptions& advertising_options, WebRtcState web_rtc_state); |
| proto::connections::Medium StartBleScanning( |
| BleDiscoveredPeripheralCallback callback, ClientProxy* client, |
| const std::string& service_id, |
| const std::string& fast_advertisement_service_uuid); |
| BasePcpHandler::ConnectImplResult BleConnectImpl(ClientProxy* client, |
| BleEndpoint* endpoint); |
| |
| // WifiLan |
| bool IsRecognizedWifiLanEndpoint( |
| const std::string& service_id, |
| const WifiLanServiceInfo& wifi_lan_service_info) const; |
| void WifiLanServiceDiscoveredHandler(ClientProxy* client, |
| NsdServiceInfo service_info, |
| const std::string& service_id); |
| void WifiLanServiceLostHandler(ClientProxy* client, |
| NsdServiceInfo service_info, |
| const std::string& service_id); |
| proto::connections::Medium StartWifiLanAdvertising( |
| ClientProxy* client, const std::string& service_id, |
| const std::string& local_endpoint_id, |
| const ByteArray& local_endpoint_info, WebRtcState web_rtc_state); |
| proto::connections::Medium StartWifiLanDiscovery( |
| WifiLanDiscoveredServiceCallback callback, ClientProxy* client, |
| const std::string& service_id); |
| BasePcpHandler::ConnectImplResult WifiLanConnectImpl( |
| ClientProxy* client, WifiLanEndpoint* endpoint); |
| |
| BluetoothRadio& bluetooth_radio_; |
| BluetoothClassic& bluetooth_medium_; |
| Ble& ble_medium_; |
| WifiLan& wifi_lan_medium_; |
| mediums::WebRtc& webrtc_medium_; |
| InjectedBluetoothDeviceStore& injected_bluetooth_device_store_; |
| std::int64_t bluetooth_classic_discoverer_client_id_{0}; |
| std::int64_t bluetooth_classic_advertiser_client_id_{0}; |
| }; |
| |
| } // namespace connections |
| } // namespace nearby |
| } // namespace location |
| |
| #endif // CORE_INTERNAL_P2P_CLUSTER_PCP_HANDLER_H_ |
