| // |
| // Copyright 2015 Google, Inc. |
| // |
| // 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. |
| // |
| |
| #include "service/low_energy_client.h" |
| |
| #include <base/logging.h> |
| |
| #include "service/adapter.h" |
| #include "service/logging_helpers.h" |
| #include "stack/include/bt_types.h" |
| #include "types/bt_transport.h" |
| #include "types/raw_address.h" |
| |
| using std::lock_guard; |
| using std::mutex; |
| |
| constexpr int kPhyLe1MbMask = 1; |
| |
| namespace bluetooth { |
| |
| // LowEnergyClient implementation |
| |
| LowEnergyClient::LowEnergyClient(Adapter& adapter, const Uuid& uuid, |
| int client_id) |
| : adapter_(adapter), |
| app_identifier_(uuid), |
| client_id_(client_id), |
| delegate_(nullptr) {} |
| |
| LowEnergyClient::~LowEnergyClient() { |
| // Automatically unregister the client. |
| VLOG(1) << "LowEnergyClient unregistering client: " << client_id_; |
| |
| // Unregister as observer so we no longer receive any callbacks. |
| hal::BluetoothGattInterface::Get()->RemoveClientObserver(this); |
| |
| hal::BluetoothGattInterface::Get() |
| ->GetClientHALInterface() |
| ->unregister_client(client_id_); |
| } |
| |
| bool LowEnergyClient::Connect(const std::string& address, bool is_direct) { |
| VLOG(2) << __func__ << "Address: " << address << " is_direct: " << is_direct; |
| |
| RawAddress bda; |
| RawAddress::FromString(address, bda); |
| |
| bt_status_t status = |
| hal::BluetoothGattInterface::Get()->GetClientHALInterface()->connect( |
| client_id_, bda, is_direct, BT_TRANSPORT_LE, false, kPhyLe1MbMask); |
| if (status != BT_STATUS_SUCCESS) { |
| LOG(ERROR) << "HAL call to connect failed"; |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool LowEnergyClient::Disconnect(const std::string& address) { |
| VLOG(2) << __func__ << "Address: " << address; |
| |
| RawAddress bda; |
| RawAddress::FromString(address, bda); |
| |
| std::map<const RawAddress, int>::iterator conn_id; |
| { |
| lock_guard<mutex> lock(connection_fields_lock_); |
| conn_id = connection_ids_.find(bda); |
| if (conn_id == connection_ids_.end()) { |
| LOG(WARNING) << "Can't disconnect, no existing connection to " << address; |
| return false; |
| } |
| } |
| |
| bt_status_t status = |
| hal::BluetoothGattInterface::Get()->GetClientHALInterface()->disconnect( |
| client_id_, bda, conn_id->second); |
| if (status != BT_STATUS_SUCCESS) { |
| LOG(ERROR) << "HAL call to disconnect failed"; |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool LowEnergyClient::SetMtu(const std::string& address, int mtu) { |
| VLOG(2) << __func__ << "Address: " << address << " MTU: " << mtu; |
| |
| RawAddress bda; |
| RawAddress::FromString(address, bda); |
| |
| std::map<const RawAddress, int>::iterator conn_id; |
| { |
| lock_guard<mutex> lock(connection_fields_lock_); |
| conn_id = connection_ids_.find(bda); |
| if (conn_id == connection_ids_.end()) { |
| LOG(WARNING) << "Can't set MTU, no existing connection to " << address; |
| return false; |
| } |
| } |
| |
| bt_status_t status = hal::BluetoothGattInterface::Get() |
| ->GetClientHALInterface() |
| ->configure_mtu(conn_id->second, mtu); |
| if (status != BT_STATUS_SUCCESS) { |
| LOG(ERROR) << "HAL call to set MTU failed"; |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void LowEnergyClient::SetDelegate(Delegate* delegate) { |
| lock_guard<mutex> lock(delegate_mutex_); |
| delegate_ = delegate; |
| } |
| |
| const Uuid& LowEnergyClient::GetAppIdentifier() const { |
| return app_identifier_; |
| } |
| |
| int LowEnergyClient::GetInstanceId() const { return client_id_; } |
| |
| void LowEnergyClient::ConnectCallback(hal::BluetoothGattInterface* gatt_iface, |
| int conn_id, int status, int client_id, |
| const RawAddress& bda) { |
| if (client_id != client_id_) return; |
| |
| VLOG(1) << __func__ << "client_id: " << client_id << " status: " << status; |
| |
| { |
| lock_guard<mutex> lock(connection_fields_lock_); |
| auto success = connection_ids_.emplace(bda, conn_id); |
| if (!success.second) { |
| LOG(ERROR) << __func__ << " Insertion into connection_ids_ failed!"; |
| } |
| } |
| |
| if (delegate_) |
| delegate_->OnConnectionState(this, status, BtAddrString(&bda).c_str(), |
| true); |
| } |
| |
| void LowEnergyClient::DisconnectCallback( |
| hal::BluetoothGattInterface* gatt_iface, int conn_id, int status, |
| int client_id, const RawAddress& bda) { |
| if (client_id != client_id_) return; |
| |
| VLOG(1) << __func__ << " client_id: " << client_id << " status: " << status; |
| { |
| lock_guard<mutex> lock(connection_fields_lock_); |
| if (!connection_ids_.erase(bda)) { |
| LOG(ERROR) << __func__ << " Erasing from connection_ids_ failed!"; |
| } |
| } |
| |
| if (delegate_) |
| delegate_->OnConnectionState(this, status, BtAddrString(&bda).c_str(), |
| false); |
| } |
| |
| void LowEnergyClient::MtuChangedCallback( |
| hal::BluetoothGattInterface* gatt_iface, int conn_id, int status, int mtu) { |
| VLOG(1) << __func__ << " conn_id: " << conn_id << " status: " << status |
| << " mtu: " << mtu; |
| |
| const RawAddress* bda = nullptr; |
| { |
| lock_guard<mutex> lock(connection_fields_lock_); |
| for (auto& connection : connection_ids_) { |
| if (connection.second == conn_id) { |
| bda = &connection.first; |
| break; |
| } |
| } |
| } |
| |
| if (!bda) return; |
| |
| std::string addr = BtAddrString(bda); |
| if (delegate_) delegate_->OnMtuChanged(this, status, addr.c_str(), mtu); |
| } |
| |
| // LowEnergyClientFactory implementation |
| |
| LowEnergyClientFactory::LowEnergyClientFactory(Adapter& adapter) |
| : adapter_(adapter) { |
| hal::BluetoothGattInterface::Get()->AddClientObserver(this); |
| } |
| |
| LowEnergyClientFactory::~LowEnergyClientFactory() { |
| hal::BluetoothGattInterface::Get()->RemoveClientObserver(this); |
| } |
| |
| bool LowEnergyClientFactory::RegisterInstance( |
| const Uuid& uuid, const RegisterCallback& callback) { |
| VLOG(1) << __func__ << " - Uuid: " << uuid.ToString(); |
| lock_guard<mutex> lock(pending_calls_lock_); |
| |
| if (pending_calls_.find(uuid) != pending_calls_.end()) { |
| LOG(ERROR) << "Low-Energy client with given Uuid already registered - " |
| << "Uuid: " << uuid.ToString(); |
| return false; |
| } |
| |
| const btgatt_client_interface_t* hal_iface = |
| hal::BluetoothGattInterface::Get()->GetClientHALInterface(); |
| |
| if (hal_iface->register_client(uuid, false) != BT_STATUS_SUCCESS) |
| return false; |
| |
| pending_calls_[uuid] = callback; |
| |
| return true; |
| } |
| |
| void LowEnergyClientFactory::RegisterClientCallback( |
| hal::BluetoothGattInterface* gatt_iface, int status, int client_id, |
| const bluetooth::Uuid& app_uuid) { |
| Uuid uuid(app_uuid); |
| |
| VLOG(1) << __func__ << " - Uuid: " << uuid.ToString(); |
| lock_guard<mutex> lock(pending_calls_lock_); |
| |
| auto iter = pending_calls_.find(uuid); |
| if (iter == pending_calls_.end()) { |
| VLOG(1) << "Ignoring callback for unknown app_id: " << uuid.ToString(); |
| return; |
| } |
| |
| // No need to construct a client if the call wasn't successful. |
| std::unique_ptr<LowEnergyClient> client; |
| BLEStatus result = BLE_STATUS_FAILURE; |
| if (status == BT_STATUS_SUCCESS) { |
| client.reset(new LowEnergyClient(adapter_, uuid, client_id)); |
| |
| gatt_iface->AddClientObserver(client.get()); |
| |
| result = BLE_STATUS_SUCCESS; |
| } |
| |
| // Notify the result via the result callback. |
| iter->second(result, uuid, std::move(client)); |
| |
| pending_calls_.erase(iter); |
| } |
| |
| } // namespace bluetooth |