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- // Copyright 2016 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/bluetooth/dbus/bluetooth_gatt_service_service_provider_impl.h"
- #include "base/bind.h"
- #include "base/logging.h"
- #include "third_party/cros_system_api/dbus/service_constants.h"
- namespace bluez {
- namespace {
- const char kErrorInvalidArgs[] = "org.freedesktop.DBus.Error.InvalidArgs";
- const char kErrorPropertyReadOnly[] =
- "org.freedesktop.DBus.Error.PropertyReadOnly";
- } // namespace
- BluetoothGattServiceServiceProviderImpl::
- BluetoothGattServiceServiceProviderImpl(
- dbus::Bus* bus,
- const dbus::ObjectPath& object_path,
- const std::string& uuid,
- bool is_primary,
- const std::vector<dbus::ObjectPath>& includes)
- : origin_thread_id_(base::PlatformThread::CurrentId()),
- uuid_(uuid),
- is_primary_(is_primary),
- includes_(includes),
- bus_(bus),
- object_path_(object_path) {
- DVLOG(1) << "Creating Bluetooth GATT service: " << object_path_.value()
- << " UUID: " << uuid;
- if (!bus_)
- return;
- DCHECK(!uuid_.empty());
- DCHECK(object_path_.IsValid());
- exported_object_ = bus_->GetExportedObject(object_path_);
- exported_object_->ExportMethod(
- dbus::kDBusPropertiesInterface, dbus::kDBusPropertiesGet,
- base::BindRepeating(&BluetoothGattServiceServiceProviderImpl::Get,
- weak_ptr_factory_.GetWeakPtr()),
- base::BindOnce(&BluetoothGattServiceServiceProviderImpl::OnExported,
- weak_ptr_factory_.GetWeakPtr()));
- exported_object_->ExportMethod(
- dbus::kDBusPropertiesInterface, dbus::kDBusPropertiesSet,
- base::BindRepeating(&BluetoothGattServiceServiceProviderImpl::Set,
- weak_ptr_factory_.GetWeakPtr()),
- base::BindOnce(&BluetoothGattServiceServiceProviderImpl::OnExported,
- weak_ptr_factory_.GetWeakPtr()));
- exported_object_->ExportMethod(
- dbus::kDBusPropertiesInterface, dbus::kDBusPropertiesGetAll,
- base::BindRepeating(&BluetoothGattServiceServiceProviderImpl::GetAll,
- weak_ptr_factory_.GetWeakPtr()),
- base::BindOnce(&BluetoothGattServiceServiceProviderImpl::OnExported,
- weak_ptr_factory_.GetWeakPtr()));
- }
- BluetoothGattServiceServiceProviderImpl::
- ~BluetoothGattServiceServiceProviderImpl() {
- DVLOG(1) << "Cleaning up Bluetooth GATT service: " << object_path_.value();
- if (bus_)
- bus_->UnregisterExportedObject(object_path_);
- }
- bool BluetoothGattServiceServiceProviderImpl::OnOriginThread() {
- return base::PlatformThread::CurrentId() == origin_thread_id_;
- }
- void BluetoothGattServiceServiceProviderImpl::Get(
- dbus::MethodCall* method_call,
- dbus::ExportedObject::ResponseSender response_sender) {
- DVLOG(2) << "BluetoothGattServiceServiceProvider::Get: "
- << object_path_.value();
- DCHECK(OnOriginThread());
- dbus::MessageReader reader(method_call);
- std::string interface_name;
- std::string property_name;
- if (!reader.PopString(&interface_name) || !reader.PopString(&property_name) ||
- reader.HasMoreData()) {
- std::unique_ptr<dbus::ErrorResponse> error_response =
- dbus::ErrorResponse::FromMethodCall(method_call, kErrorInvalidArgs,
- "Expected 'ss'.");
- std::move(response_sender).Run(std::move(error_response));
- return;
- }
- // Only the GATT service interface is allowed.
- if (interface_name !=
- bluetooth_gatt_service::kBluetoothGattServiceInterface) {
- std::unique_ptr<dbus::ErrorResponse> error_response =
- dbus::ErrorResponse::FromMethodCall(
- method_call, kErrorInvalidArgs,
- "No such interface: '" + interface_name + "'.");
- std::move(response_sender).Run(std::move(error_response));
- return;
- }
- // Return error if |property_name| is unknown.
- if (property_name != bluetooth_gatt_service::kUUIDProperty &&
- property_name != bluetooth_gatt_service::kIncludesProperty) {
- std::unique_ptr<dbus::ErrorResponse> error_response =
- dbus::ErrorResponse::FromMethodCall(
- method_call, kErrorInvalidArgs,
- "No such property: '" + property_name + "'.");
- std::move(response_sender).Run(std::move(error_response));
- return;
- }
- std::unique_ptr<dbus::Response> response =
- dbus::Response::FromMethodCall(method_call);
- dbus::MessageWriter writer(response.get());
- dbus::MessageWriter variant_writer(NULL);
- if (property_name == bluetooth_gatt_service::kUUIDProperty) {
- writer.OpenVariant("s", &variant_writer);
- variant_writer.AppendString(uuid_);
- writer.CloseContainer(&variant_writer);
- } else {
- writer.OpenVariant("ao", &variant_writer);
- variant_writer.AppendArrayOfObjectPaths(includes_);
- writer.CloseContainer(&variant_writer);
- }
- std::move(response_sender).Run(std::move(response));
- }
- void BluetoothGattServiceServiceProviderImpl::Set(
- dbus::MethodCall* method_call,
- dbus::ExportedObject::ResponseSender response_sender) {
- DVLOG(2) << "BluetoothGattServiceServiceProviderImpl::Set: "
- << object_path_.value();
- DCHECK(OnOriginThread());
- // All of the properties on this interface are read-only, so just return
- // error.
- std::unique_ptr<dbus::ErrorResponse> error_response =
- dbus::ErrorResponse::FromMethodCall(method_call, kErrorPropertyReadOnly,
- "All properties are read-only.");
- std::move(response_sender).Run(std::move(error_response));
- }
- void BluetoothGattServiceServiceProviderImpl::GetAll(
- dbus::MethodCall* method_call,
- dbus::ExportedObject::ResponseSender response_sender) {
- DVLOG(2) << "BluetoothGattServiceServiceProvider::GetAll: "
- << object_path_.value();
- DCHECK(OnOriginThread());
- dbus::MessageReader reader(method_call);
- std::string interface_name;
- if (!reader.PopString(&interface_name) || reader.HasMoreData()) {
- std::unique_ptr<dbus::ErrorResponse> error_response =
- dbus::ErrorResponse::FromMethodCall(method_call, kErrorInvalidArgs,
- "Expected 's'.");
- std::move(response_sender).Run(std::move(error_response));
- return;
- }
- // Only the GATT service interface is allowed.
- if (interface_name !=
- bluetooth_gatt_service::kBluetoothGattServiceInterface) {
- std::unique_ptr<dbus::ErrorResponse> error_response =
- dbus::ErrorResponse::FromMethodCall(
- method_call, kErrorInvalidArgs,
- "No such interface: '" + interface_name + "'.");
- std::move(response_sender).Run(std::move(error_response));
- return;
- }
- std::unique_ptr<dbus::Response> response =
- dbus::Response::FromMethodCall(method_call);
- dbus::MessageWriter writer(response.get());
- WriteProperties(&writer);
- std::move(response_sender).Run(std::move(response));
- }
- void BluetoothGattServiceServiceProviderImpl::WriteProperties(
- dbus::MessageWriter* writer) {
- dbus::MessageWriter array_writer(NULL);
- dbus::MessageWriter dict_entry_writer(NULL);
- dbus::MessageWriter variant_writer(NULL);
- writer->OpenArray("{sv}", &array_writer);
- array_writer.OpenDictEntry(&dict_entry_writer);
- dict_entry_writer.AppendString(bluetooth_gatt_service::kUUIDProperty);
- dict_entry_writer.AppendVariantOfString(uuid_);
- array_writer.CloseContainer(&dict_entry_writer);
- array_writer.OpenDictEntry(&dict_entry_writer);
- dict_entry_writer.AppendString(bluetooth_gatt_service::kPrimaryProperty);
- dict_entry_writer.AppendVariantOfBool(is_primary_);
- array_writer.CloseContainer(&dict_entry_writer);
- array_writer.OpenDictEntry(&dict_entry_writer);
- dict_entry_writer.AppendString(bluetooth_gatt_service::kIncludesProperty);
- dict_entry_writer.OpenVariant("ao", &variant_writer);
- variant_writer.AppendArrayOfObjectPaths(includes_);
- dict_entry_writer.CloseContainer(&variant_writer);
- array_writer.CloseContainer(&dict_entry_writer);
- writer->CloseContainer(&array_writer);
- }
- void BluetoothGattServiceServiceProviderImpl::OnExported(
- const std::string& interface_name,
- const std::string& method_name,
- bool success) {
- DVLOG_IF(1, !success) << "Failed to export " << interface_name << "."
- << method_name;
- }
- const dbus::ObjectPath& BluetoothGattServiceServiceProviderImpl::object_path()
- const {
- return object_path_;
- }
- } // namespace bluez
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