| // |
| // 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. |
| // |
| |
| #define LOG_TAG "bt_gatts" |
| |
| #include "gatt_server_old.h" |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| |
| #include <base/bind.h> |
| #include <algorithm> |
| #include <array> |
| #include <condition_variable> |
| #include <map> |
| #include <memory> |
| #include <mutex> |
| #include <set> |
| #include <string> |
| #include <unordered_map> |
| #include <unordered_set> |
| #include <vector> |
| |
| #include <hardware/bluetooth.h> |
| #include <hardware/bt_gatt.h> |
| |
| #include "service/hal/bluetooth_interface.h" |
| #include "service/logging_helpers.h" |
| |
| #include "osi/include/log.h" |
| #include "osi/include/osi.h" |
| |
| namespace { |
| |
| const size_t kMaxGattAttributeSize = 512; |
| std::vector<btgatt_db_element_t> pending_svc_decl; |
| std::unordered_set<int> blob_index; |
| |
| // TODO(icoolidge): Support multiple instances |
| // TODO(armansito): Remove this variable. No point of having this if |
| // each bluetooth::gatt::Server instance already keeps a pointer to the |
| // ServerInternals that is associated with it (which is much cleaner). It looks |
| // like this variable exists because the btif callbacks don't allow the |
| // upper-layer to pass user data to them. We could: |
| // |
| // 1. Fix the btif callbacks so that some sort of continuation can be |
| // attached to a callback. This might be a long shot since the callback |
| // interface doesn't allow more than one caller to register its own callbacks |
| // (which might be what we want though, since this would make the API more |
| // flexible). |
| // |
| // 2. Allow creation of Server objects using a factory method that returns |
| // the result asynchronously in a base::Callback. The RegisterServerCallback |
| // provides an |app_uuid|, which can be used to store callback structures in |
| // a map and lazily instantiate the Server and invoke the correct callback. |
| // This is a general pattern that we should use throughout the daemon, since |
| // all operations can timeout or fail and this is best reported in an |
| // asynchronous base::Callback. |
| // |
| static bluetooth::gatt::ServerInternals* g_internal = nullptr; |
| |
| enum { kPipeReadEnd = 0, kPipeWriteEnd = 1, kPipeNumEnds = 2 }; |
| |
| } // namespace |
| |
| void DoNothing(uint8_t p) {} |
| |
| namespace bluetooth { |
| namespace gatt { |
| |
| struct Characteristic { |
| Uuid uuid; |
| int blob_section; |
| std::vector<uint8_t> blob; |
| |
| // Support synchronized blob updates by latching under mutex. |
| std::vector<uint8_t> next_blob; |
| bool next_blob_pending; |
| bool notify; |
| }; |
| |
| struct ServerInternals { |
| ServerInternals(); |
| ~ServerInternals(); |
| int Initialize(); |
| bt_status_t AddCharacteristic(const Uuid& uuid, uint8_t properties, |
| uint16_t permissions); |
| |
| // This maps API attribute Uuids to BlueDroid handles. |
| std::map<Uuid, int> uuid_to_attribute; |
| |
| // The attribute cache, indexed by BlueDroid handles. |
| std::unordered_map<int, Characteristic> characteristics; |
| |
| // Associate a control attribute with its value attribute. |
| std::unordered_map<int, int> controlled_blobs; |
| |
| ScanResults scan_results; |
| |
| Uuid last_write; |
| const btgatt_interface_t* gatt; |
| int server_if; |
| int client_if; |
| int service_handle; |
| std::set<int> connections; |
| |
| std::mutex lock; |
| std::condition_variable api_synchronize; |
| int pipefd[kPipeNumEnds]; |
| }; |
| |
| } // namespace gatt |
| } // namespace bluetooth |
| |
| namespace { |
| |
| /** Callback invoked in response to register_server */ |
| void RegisterServerCallback(int status, int server_if, |
| const bluetooth::Uuid& app_uuid) { |
| LOG_INFO(LOG_TAG, "%s: status:%d server_if:%d app_uuid:%p", __func__, status, |
| server_if, &app_uuid); |
| |
| g_internal->server_if = server_if; |
| |
| pending_svc_decl.push_back( |
| {.type = BTGATT_DB_PRIMARY_SERVICE, .uuid = app_uuid}); |
| } |
| |
| void ServiceAddedCallback(int status, int server_if, |
| std::vector<btgatt_db_element_t> service) { |
| LOG_INFO(LOG_TAG, "%s: status:%d server_if:%d count:%zu svc_handle:%d", |
| __func__, status, server_if, service.size(), |
| service[0].attribute_handle); |
| |
| std::lock_guard<std::mutex> lock(g_internal->lock); |
| g_internal->server_if = server_if; |
| |
| g_internal->service_handle = service[0].attribute_handle; |
| |
| uint16_t prev_char_handle = 0; |
| uint16_t prev_char_properties = 0; |
| for (size_t i = 1; i < service.size(); i++) { |
| const btgatt_db_element_t& el = service[i]; |
| if (el.type == BTGATT_DB_DESCRIPTOR) { |
| LOG_INFO(LOG_TAG, "%s: descr_handle:%d", __func__, el.attribute_handle); |
| } else if (el.type == BTGATT_DB_CHARACTERISTIC) { |
| bluetooth::Uuid id(el.uuid); |
| uint16_t char_handle = el.attribute_handle; |
| |
| LOG_INFO(LOG_TAG, "%s: char_handle:%d", __func__, char_handle); |
| |
| g_internal->uuid_to_attribute[id] = char_handle; |
| g_internal->characteristics[char_handle].uuid = id; |
| g_internal->characteristics[char_handle].blob_section = 0; |
| |
| // If the added characteristic is blob |
| if (blob_index.find(i) != blob_index.end()) { |
| // Finally, associate the control attribute with the value attribute. |
| // Also, initialize the control attribute to a readable zero. |
| const uint16_t control_attribute = char_handle; |
| const uint16_t blob_attribute = prev_char_handle; |
| g_internal->controlled_blobs[control_attribute] = blob_attribute; |
| g_internal->characteristics[blob_attribute].notify = |
| prev_char_properties & bluetooth::gatt::kPropertyNotify; |
| |
| bluetooth::gatt::Characteristic& ctrl = |
| g_internal->characteristics[control_attribute]; |
| ctrl.next_blob.clear(); |
| ctrl.next_blob.push_back(0); |
| ctrl.next_blob_pending = true; |
| ctrl.blob_section = 0; |
| ctrl.notify = false; |
| } |
| prev_char_handle = char_handle; |
| prev_char_properties = el.properties; |
| } |
| } |
| |
| pending_svc_decl.clear(); |
| blob_index.clear(); |
| |
| // The Uuid provided here is unimportant, and is only used to satisfy |
| // BlueDroid. |
| // It must be different than any other registered Uuid. |
| bluetooth::Uuid client_id = bluetooth::Uuid::GetRandom(); |
| |
| bt_status_t btstat = g_internal->gatt->client->register_client(client_id); |
| if (btstat != BT_STATUS_SUCCESS) { |
| LOG_ERROR(LOG_TAG, "%s: Failed to register client", __func__); |
| } |
| } |
| |
| void RequestReadCallback(int conn_id, int trans_id, const RawAddress& bda, |
| int attr_handle, int attribute_offset_octets, |
| bool is_long) { |
| std::lock_guard<std::mutex> lock(g_internal->lock); |
| |
| bluetooth::gatt::Characteristic& ch = |
| g_internal->characteristics[attr_handle]; |
| |
| // Latch next_blob to blob on a 'fresh' read. |
| if (ch.next_blob_pending && attribute_offset_octets == 0 && |
| ch.blob_section == 0) { |
| std::swap(ch.blob, ch.next_blob); |
| ch.next_blob_pending = false; |
| } |
| |
| const size_t blob_offset_octets = |
| std::min(ch.blob.size(), ch.blob_section * kMaxGattAttributeSize); |
| const size_t blob_remaining = ch.blob.size() - blob_offset_octets; |
| const size_t attribute_size = std::min(kMaxGattAttributeSize, blob_remaining); |
| |
| std::string addr(BtAddrString(&bda)); |
| LOG_INFO(LOG_TAG, |
| "%s: connection:%d (%s) reading attr:%d attribute_offset_octets:%d " |
| "blob_section:%u (is_long:%u)", |
| __func__, conn_id, addr.c_str(), attr_handle, |
| attribute_offset_octets, ch.blob_section, is_long); |
| |
| btgatt_response_t response; |
| response.attr_value.len = 0; |
| |
| if (attribute_offset_octets < static_cast<int>(attribute_size)) { |
| std::copy(ch.blob.begin() + blob_offset_octets + attribute_offset_octets, |
| ch.blob.begin() + blob_offset_octets + attribute_size, |
| response.attr_value.value); |
| response.attr_value.len = attribute_size - attribute_offset_octets; |
| } |
| |
| response.attr_value.handle = attr_handle; |
| response.attr_value.offset = attribute_offset_octets; |
| response.attr_value.auth_req = 0; |
| g_internal->gatt->server->send_response(conn_id, trans_id, 0, response); |
| } |
| |
| void RequestWriteCallback(int conn_id, int trans_id, const RawAddress& bda, |
| int attr_handle, int attribute_offset, bool need_rsp, |
| bool is_prep, std::vector<uint8_t> value) { |
| std::string addr(BtAddrString(&bda)); |
| LOG_INFO(LOG_TAG, |
| "%s: connection:%d (%s:trans:%d) write attr:%d attribute_offset:%d " |
| "length:%zu " |
| "need_resp:%u is_prep:%u", |
| __func__, conn_id, addr.c_str(), trans_id, attr_handle, |
| attribute_offset, value.size(), need_rsp, is_prep); |
| |
| std::lock_guard<std::mutex> lock(g_internal->lock); |
| |
| bluetooth::gatt::Characteristic& ch = |
| g_internal->characteristics[attr_handle]; |
| |
| ch.blob.resize(attribute_offset + value.size()); |
| |
| std::copy(value.begin(), value.end(), ch.blob.begin() + attribute_offset); |
| |
| auto target_blob = g_internal->controlled_blobs.find(attr_handle); |
| // If this is a control attribute, adjust offset of the target blob. |
| if (target_blob != g_internal->controlled_blobs.end() && |
| ch.blob.size() == 1u) { |
| g_internal->characteristics[target_blob->second].blob_section = ch.blob[0]; |
| LOG_INFO(LOG_TAG, "%s: updating attribute %d blob_section to %u", __func__, |
| target_blob->second, ch.blob[0]); |
| } else if (!is_prep) { |
| // This is a single frame characteristic write. |
| // Notify upwards because we're done now. |
| const bluetooth::Uuid::UUID128Bit& attr_uuid = ch.uuid.To128BitBE(); |
| ssize_t status; |
| OSI_NO_INTR(status = write(g_internal->pipefd[kPipeWriteEnd], |
| attr_uuid.data(), attr_uuid.size())); |
| if (-1 == status) |
| LOG_ERROR(LOG_TAG, "%s: write failed: %s", __func__, strerror(errno)); |
| } else { |
| // This is a multi-frame characteristic write. |
| // Wait for an 'RequestExecWriteCallback' to notify completion. |
| g_internal->last_write = ch.uuid; |
| } |
| |
| // Respond only if needed. |
| if (!need_rsp) return; |
| |
| btgatt_response_t response; |
| response.attr_value.handle = attr_handle; |
| response.attr_value.offset = attribute_offset; |
| response.attr_value.len = value.size(); |
| response.attr_value.auth_req = 0; |
| // Provide written data back to sender for the response. |
| // Remote stacks use this to validate the success of the write. |
| std::copy(value.begin(), value.end(), response.attr_value.value); |
| g_internal->gatt->server->send_response(conn_id, trans_id, 0, response); |
| } |
| |
| void RequestExecWriteCallback(int conn_id, int trans_id, const RawAddress& bda, |
| int exec_write) { |
| std::string addr(BtAddrString(&bda)); |
| LOG_INFO(LOG_TAG, "%s: connection:%d (%s:trans:%d) exec_write:%d", __func__, |
| conn_id, addr.c_str(), trans_id, exec_write); |
| |
| // This 'response' data is unused for ExecWriteResponses. |
| // It is only used to pass BlueDroid argument validation. |
| btgatt_response_t response = {}; |
| g_internal->gatt->server->send_response(conn_id, trans_id, 0, response); |
| |
| if (!exec_write) return; |
| |
| std::lock_guard<std::mutex> lock(g_internal->lock); |
| // Communicate the attribute Uuid as notification of a write update. |
| const bluetooth::Uuid::UUID128Bit uuid = g_internal->last_write.To128BitBE(); |
| ssize_t status; |
| OSI_NO_INTR(status = write(g_internal->pipefd[kPipeWriteEnd], uuid.data(), |
| uuid.size())); |
| if (-1 == status) |
| LOG_ERROR(LOG_TAG, "%s: write failed: %s", __func__, strerror(errno)); |
| } |
| |
| void ConnectionCallback(int conn_id, int server_if, int connected, |
| const RawAddress& bda) { |
| std::string addr(BtAddrString(&bda)); |
| LOG_INFO(LOG_TAG, "%s: connection:%d server_if:%d connected:%d addr:%s", |
| __func__, conn_id, server_if, connected, addr.c_str()); |
| if (connected == 1) { |
| g_internal->connections.insert(conn_id); |
| } else if (connected == 0) { |
| g_internal->connections.erase(conn_id); |
| } |
| } |
| |
| void EnableAdvertisingCallback(uint8_t status) { |
| LOG_INFO(LOG_TAG, "%s: status:%d", __func__, status); |
| // This terminates a Start call. |
| std::lock_guard<std::mutex> lock(g_internal->lock); |
| g_internal->api_synchronize.notify_one(); |
| } |
| |
| void RegisterClientCallback(int status, int client_if, |
| const bluetooth::Uuid& app_uuid) { |
| LOG_INFO(LOG_TAG, "%s: status:%d client_if:%d uuid[0]:%s", __func__, status, |
| client_if, app_uuid.ToString().c_str()); |
| g_internal->client_if = client_if; |
| |
| // Setup our advertisement. This has no callback. |
| g_internal->gatt->advertiser->SetData(0 /* std_inst */, false, |
| {/*TODO: put inverval 2,2 here*/}, |
| base::Bind(&DoNothing)); |
| |
| g_internal->gatt->advertiser->Enable( |
| 0 /* std_inst */, true, base::Bind(&EnableAdvertisingCallback), |
| 0 /* no duration */, 0 /* no maxExtAdvEvent*/, base::Bind(&DoNothing)); |
| } |
| |
| void ServiceStoppedCallback(int status, int server_if, int srvc_handle) { |
| LOG_INFO(LOG_TAG, "%s: status:%d server_if:%d srvc_handle:%d", __func__, |
| status, server_if, srvc_handle); |
| // This terminates a Stop call. |
| // TODO(icoolidge): make this symmetric with start |
| std::lock_guard<std::mutex> lock(g_internal->lock); |
| g_internal->api_synchronize.notify_one(); |
| } |
| |
| void ScanResultCallback(uint16_t ble_evt_type, uint8_t addr_type, |
| RawAddress* bda, uint8_t ble_primary_phy, |
| uint8_t ble_secondary_phy, uint8_t ble_advertising_sid, |
| int8_t ble_tx_power, int8_t rssi, |
| uint16_t ble_periodic_adv_int, |
| std::vector<uint8_t> adv_data) { |
| std::string addr(BtAddrString(bda)); |
| std::lock_guard<std::mutex> lock(g_internal->lock); |
| g_internal->scan_results[addr] = rssi; |
| } |
| |
| void ClientConnectCallback(int conn_id, int status, int client_if, |
| const RawAddress& bda) { |
| std::string addr(BtAddrString(&bda)); |
| LOG_INFO(LOG_TAG, "%s: conn_id:%d status:%d client_if:%d %s", __func__, |
| conn_id, status, client_if, addr.c_str()); |
| } |
| |
| void ClientDisconnectCallback(int conn_id, int status, int client_if, |
| const RawAddress& bda) { |
| std::string addr(BtAddrString(&bda)); |
| LOG_INFO(LOG_TAG, "%s: conn_id:%d status:%d client_if:%d %s", __func__, |
| conn_id, status, client_if, addr.c_str()); |
| } |
| |
| void IndicationSentCallback(UNUSED_ATTR int conn_id, UNUSED_ATTR int status) { |
| // TODO(icoolidge): what to do |
| } |
| |
| void ResponseConfirmationCallback(UNUSED_ATTR int status, |
| UNUSED_ATTR int handle) { |
| // TODO(icoolidge): what to do |
| } |
| |
| const btgatt_server_callbacks_t gatt_server_callbacks = { |
| RegisterServerCallback, |
| ConnectionCallback, |
| ServiceAddedCallback, |
| ServiceStoppedCallback, |
| nullptr, /* service_deleted_cb */ |
| RequestReadCallback, |
| RequestReadCallback, |
| RequestWriteCallback, |
| RequestWriteCallback, |
| RequestExecWriteCallback, |
| ResponseConfirmationCallback, |
| IndicationSentCallback, |
| nullptr, /* congestion_cb*/ |
| nullptr, /* mtu_changed_cb */ |
| nullptr, /* phy_update_cb */ |
| nullptr, /* conn_update_cb */ |
| }; |
| |
| // TODO(eisenbach): Refactor GATT interface to not require servers |
| // to refer to the client interface. |
| const btgatt_client_callbacks_t gatt_client_callbacks = { |
| RegisterClientCallback, |
| ClientConnectCallback, |
| ClientDisconnectCallback, |
| nullptr, /* search_complete_cb; */ |
| nullptr, /* register_for_notification_cb; */ |
| nullptr, /* notify_cb; */ |
| nullptr, /* read_characteristic_cb; */ |
| nullptr, /* write_characteristic_cb; */ |
| nullptr, /* read_descriptor_cb; */ |
| nullptr, /* write_descriptor_cb; */ |
| nullptr, /* execute_write_cb; */ |
| nullptr, /* read_remote_rssi_cb; */ |
| nullptr, /* configure_mtu_cb; */ |
| nullptr, /* congestion_cb; */ |
| nullptr, /* get_gatt_db_cb; */ |
| nullptr, /* services_removed_cb */ |
| nullptr, /* services_added_cb */ |
| nullptr, /* phy_update_cb */ |
| nullptr, /* conn_update_cb */ |
| }; |
| |
| const btgatt_scanner_callbacks_t gatt_scanner_callbacks = { |
| ScanResultCallback, |
| nullptr, /* batchscan_reports_cb; */ |
| nullptr, /* batchscan_threshold_cb; */ |
| nullptr, /* track_adv_event_cb; */ |
| }; |
| |
| const btgatt_callbacks_t gatt_callbacks = { |
| /** Set to sizeof(btgatt_callbacks_t) */ |
| sizeof(btgatt_callbacks_t), |
| |
| /** GATT Client callbacks */ |
| &gatt_client_callbacks, |
| |
| /** GATT Server callbacks */ |
| &gatt_server_callbacks, |
| |
| /** GATT Server callbacks */ |
| &gatt_scanner_callbacks, |
| }; |
| |
| } // namespace |
| |
| namespace bluetooth { |
| namespace gatt { |
| |
| int ServerInternals::Initialize() { |
| // Get the interface to the GATT profile. |
| const bt_interface_t* bt_iface = |
| hal::BluetoothInterface::Get()->GetHALInterface(); |
| gatt = reinterpret_cast<const btgatt_interface_t*>( |
| bt_iface->get_profile_interface(BT_PROFILE_GATT_ID)); |
| if (!gatt) { |
| LOG_ERROR(LOG_TAG, "Error getting GATT interface"); |
| return -1; |
| } |
| |
| bt_status_t btstat = gatt->init(&gatt_callbacks); |
| if (btstat != BT_STATUS_SUCCESS) { |
| LOG_ERROR(LOG_TAG, "Failed to initialize gatt interface"); |
| return -1; |
| } |
| |
| int status = pipe(pipefd); |
| if (status == -1) { |
| LOG_ERROR(LOG_TAG, "pipe creation failed: %s", strerror(errno)); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| bt_status_t ServerInternals::AddCharacteristic(const Uuid& uuid, |
| uint8_t properties, |
| uint16_t permissions) { |
| pending_svc_decl.push_back({.type = BTGATT_DB_CHARACTERISTIC, |
| .uuid = uuid, |
| .properties = properties, |
| .permissions = permissions}); |
| return BT_STATUS_SUCCESS; |
| } |
| |
| ServerInternals::ServerInternals() |
| : gatt(nullptr), |
| server_if(0), |
| client_if(0), |
| service_handle(0), |
| pipefd{INVALID_FD, INVALID_FD} {} |
| |
| ServerInternals::~ServerInternals() { |
| if (pipefd[0] != INVALID_FD) close(pipefd[0]); |
| if (pipefd[1] != INVALID_FD) close(pipefd[1]); |
| |
| gatt->server->delete_service(server_if, service_handle); |
| gatt->server->unregister_server(server_if); |
| gatt->client->unregister_client(client_if); |
| } |
| |
| Server::Server() : internal_(nullptr) {} |
| |
| Server::~Server() {} |
| |
| bool Server::Initialize(const Uuid& service_id, int* gatt_pipe) { |
| internal_.reset(new ServerInternals); |
| if (!internal_) { |
| LOG_ERROR(LOG_TAG, "Error creating internals"); |
| return false; |
| } |
| g_internal = internal_.get(); |
| |
| std::unique_lock<std::mutex> lock(internal_->lock); |
| int status = internal_->Initialize(); |
| if (status) { |
| LOG_ERROR(LOG_TAG, "Error initializing internals"); |
| return false; |
| } |
| |
| bt_status_t btstat = internal_->gatt->server->register_server(service_id); |
| if (btstat != BT_STATUS_SUCCESS) { |
| LOG_ERROR(LOG_TAG, "Failed to register server"); |
| return false; |
| } |
| |
| internal_->api_synchronize.wait(lock); |
| // TODO(icoolidge): Better error handling. |
| if (internal_->server_if == 0) { |
| LOG_ERROR(LOG_TAG, "Initialization of server failed"); |
| return false; |
| } |
| |
| *gatt_pipe = internal_->pipefd[kPipeReadEnd]; |
| LOG_INFO(LOG_TAG, "Server Initialize succeeded"); |
| return true; |
| } |
| |
| bool Server::SetAdvertisement(const std::vector<Uuid>& ids, |
| const std::vector<uint8_t>& service_data, |
| const std::vector<uint8_t>& manufacturer_data, |
| bool transmit_name) { |
| // std::vector<uint8_t> id_data; |
| // const auto& mutable_manufacturer_data = manufacturer_data; |
| // const auto& mutable_service_data = service_data; |
| |
| // for (const Uuid &id : ids) { |
| // const auto le_id = id.To128BitLE(); |
| // id_data.insert(id_data.end(), le_id.begin(), le_id.end()); |
| // } |
| |
| std::lock_guard<std::mutex> lock(internal_->lock); |
| |
| // Setup our advertisement. This has no callback. |
| internal_->gatt->advertiser->SetData(0, false, /* beacon, not scan response */ |
| {}, base::Bind(&DoNothing)); |
| // transmit_name, /* name */ |
| // 2, 2, interval |
| // mutable_manufacturer_data, |
| // mutable_service_data, |
| // id_data); |
| return true; |
| } |
| |
| bool Server::SetScanResponse(const std::vector<Uuid>& ids, |
| const std::vector<uint8_t>& service_data, |
| const std::vector<uint8_t>& manufacturer_data, |
| bool transmit_name) { |
| // std::vector<uint8_t> id_data; |
| // const auto& mutable_manufacturer_data = manufacturer_data; |
| // const auto& mutable_service_data = service_data; |
| |
| // for (const Uuid &id : ids) { |
| // const auto le_id = id.To128BitLE(); |
| // id_data.insert(id_data.end(), le_id.begin(), le_id.end()); |
| // } |
| |
| std::lock_guard<std::mutex> lock(internal_->lock); |
| |
| // Setup our advertisement. This has no callback. |
| internal_->gatt->advertiser->SetData(0, true, /* scan response */ |
| {}, base::Bind(&DoNothing)); |
| // transmit_name, /* name */ |
| // false, /* no txpower */ |
| // 2, 2, interval |
| // 0, /* appearance */ |
| // mutable_manufacturer_data, |
| // mutable_service_data, |
| // id_data); |
| return true; |
| } |
| |
| bool Server::AddCharacteristic(const Uuid& id, int properties, |
| int permissions) { |
| std::unique_lock<std::mutex> lock(internal_->lock); |
| bt_status_t btstat = |
| internal_->AddCharacteristic(id, properties, permissions); |
| if (btstat != BT_STATUS_SUCCESS) { |
| LOG_ERROR(LOG_TAG, "Failed to add characteristic to service: 0x%04x", |
| internal_->service_handle); |
| return false; |
| } |
| internal_->api_synchronize.wait(lock); |
| const int handle = internal_->uuid_to_attribute[id]; |
| internal_->characteristics[handle].notify = properties & kPropertyNotify; |
| return true; |
| } |
| |
| bool Server::AddBlob(const Uuid& id, const Uuid& control_id, int properties, |
| int permissions) { |
| std::unique_lock<std::mutex> lock(internal_->lock); |
| |
| // First, add the primary attribute (characteristic value) |
| bt_status_t btstat = |
| internal_->AddCharacteristic(id, properties, permissions); |
| if (btstat != BT_STATUS_SUCCESS) { |
| LOG_ERROR(LOG_TAG, "Failed to set scan response data"); |
| return false; |
| } |
| |
| // Next, add the secondary attribute (blob control). |
| // Control attributes have fixed permissions/properties. |
| // Remember position at which blob was added. |
| blob_index.insert(pending_svc_decl.size()); |
| btstat = |
| internal_->AddCharacteristic(control_id, kPropertyRead | kPropertyWrite, |
| kPermissionRead | kPermissionWrite); |
| |
| return true; |
| } |
| |
| bool Server::Start() { |
| std::unique_lock<std::mutex> lock(internal_->lock); |
| bt_status_t btstat = internal_->gatt->server->add_service( |
| internal_->server_if, pending_svc_decl); |
| if (btstat != BT_STATUS_SUCCESS) { |
| LOG_ERROR(LOG_TAG, "Failed to start service with handle: 0x%04x", |
| internal_->service_handle); |
| return false; |
| } |
| internal_->api_synchronize.wait(lock); |
| return true; |
| } |
| |
| bool Server::Stop() { |
| std::unique_lock<std::mutex> lock(internal_->lock); |
| bt_status_t btstat = internal_->gatt->server->stop_service( |
| internal_->server_if, internal_->service_handle); |
| if (btstat != BT_STATUS_SUCCESS) { |
| LOG_ERROR(LOG_TAG, "Failed to stop service with handle: 0x%04x", |
| internal_->service_handle); |
| return false; |
| } |
| internal_->api_synchronize.wait(lock); |
| return true; |
| } |
| |
| bool Server::ScanEnable() { |
| internal_->gatt->scanner->Scan(true); |
| return true; |
| } |
| |
| bool Server::ScanDisable() { |
| internal_->gatt->scanner->Scan(false); |
| return true; |
| } |
| |
| bool Server::GetScanResults(ScanResults* results) { |
| std::lock_guard<std::mutex> lock(internal_->lock); |
| *results = internal_->scan_results; |
| return true; |
| } |
| |
| bool Server::SetCharacteristicValue(const Uuid& id, |
| const std::vector<uint8_t>& value) { |
| std::lock_guard<std::mutex> lock(internal_->lock); |
| const int attribute_id = internal_->uuid_to_attribute[id]; |
| Characteristic& ch = internal_->characteristics[attribute_id]; |
| ch.next_blob = value; |
| ch.next_blob_pending = true; |
| |
| if (!ch.notify) return true; |
| |
| for (auto connection : internal_->connections) { |
| internal_->gatt->server->send_indication(internal_->server_if, attribute_id, |
| connection, true, {0}); |
| } |
| return true; |
| } |
| |
| bool Server::GetCharacteristicValue(const Uuid& id, |
| std::vector<uint8_t>* value) { |
| std::lock_guard<std::mutex> lock(internal_->lock); |
| const int attribute_id = internal_->uuid_to_attribute[id]; |
| *value = internal_->characteristics[attribute_id].blob; |
| return true; |
| } |
| |
| } // namespace gatt |
| } // namespace bluetooth |