| // Copyright 2019 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 "ash/dbus/gesture_properties_service_provider.h" |
| |
| #include <memory> |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "base/logging.h" |
| #include "dbus/message.h" |
| #include "third_party/cros_system_api/dbus/service_constants.h" |
| |
| #include "ui/ozone/public/input_controller.h" |
| #include "ui/ozone/public/ozone_platform.h" |
| |
| namespace ash { |
| |
| GesturePropertiesServiceProvider::GesturePropertiesServiceProvider() |
| : weak_ptr_factory_(this) {} |
| |
| GesturePropertiesServiceProvider::~GesturePropertiesServiceProvider() = default; |
| |
| void GesturePropertiesServiceProvider::Start( |
| scoped_refptr<dbus::ExportedObject> exported_object) { |
| dbus::ExportedObject::OnExportedCallback on_exported = |
| base::BindRepeating(&GesturePropertiesServiceProvider::OnExported, |
| weak_ptr_factory_.GetWeakPtr()); |
| exported_object->ExportMethod( |
| chromeos::kGesturePropertiesServiceInterface, |
| chromeos::kGesturePropertiesServiceListDevicesMethod, |
| base::BindRepeating(&GesturePropertiesServiceProvider::ListDevices, |
| weak_ptr_factory_.GetWeakPtr()), |
| on_exported); |
| exported_object->ExportMethod( |
| chromeos::kGesturePropertiesServiceInterface, |
| chromeos::kGesturePropertiesServiceListPropertiesMethod, |
| base::BindRepeating(&GesturePropertiesServiceProvider::ListProperties, |
| weak_ptr_factory_.GetWeakPtr()), |
| on_exported); |
| exported_object->ExportMethod( |
| chromeos::kGesturePropertiesServiceInterface, |
| chromeos::kGesturePropertiesServiceGetPropertyMethod, |
| base::BindRepeating(&GesturePropertiesServiceProvider::GetProperty, |
| weak_ptr_factory_.GetWeakPtr()), |
| on_exported); |
| exported_object->ExportMethod( |
| chromeos::kGesturePropertiesServiceInterface, |
| chromeos::kGesturePropertiesServiceSetPropertyMethod, |
| base::BindRepeating(&GesturePropertiesServiceProvider::SetProperty, |
| weak_ptr_factory_.GetWeakPtr()), |
| on_exported); |
| } |
| |
| void GesturePropertiesServiceProvider::OnExported( |
| const std::string& interface_name, |
| const std::string& method_name, |
| bool success) { |
| if (!success) |
| LOG(ERROR) << "Failed to export " << interface_name << "." << method_name; |
| } |
| |
| namespace { |
| |
| void GetPropertyCallback( |
| dbus::MethodCall* method_call, |
| std::unique_ptr<dbus::Response> response, |
| const dbus::ExportedObject::ResponseSender& response_sender, |
| bool is_read_only, |
| ui::ozone::mojom::GesturePropValuePtr values) { |
| if (values.is_null()) { |
| response_sender.Run(dbus::ErrorResponse::FromMethodCall( |
| method_call, DBUS_ERROR_INVALID_ARGS, |
| "The device ID or property name specified was not found.")); |
| return; |
| } |
| |
| dbus::MessageWriter writer(response.get()); |
| dbus::MessageWriter variant_writer(nullptr); |
| dbus::MessageWriter array_writer(nullptr); |
| writer.AppendBool(is_read_only); |
| switch (values->which()) { |
| case ui::ozone::mojom::GesturePropValue::Tag::INTS: { |
| writer.AppendUint32(values->get_ints().size()); |
| writer.OpenVariant("ai", &variant_writer); |
| variant_writer.AppendArrayOfInt32s(values->get_ints().data(), |
| values->get_ints().size()); |
| writer.CloseContainer(&variant_writer); |
| break; |
| } |
| case ui::ozone::mojom::GesturePropValue::Tag::SHORTS: { |
| writer.AppendUint32(values->get_shorts().size()); |
| writer.OpenVariant("an", &variant_writer); |
| variant_writer.OpenArray("n", &array_writer); |
| for (int16_t value : values->get_shorts()) { |
| array_writer.AppendInt16(value); |
| } |
| variant_writer.CloseContainer(&array_writer); |
| writer.CloseContainer(&variant_writer); |
| break; |
| } |
| case ui::ozone::mojom::GesturePropValue::Tag::BOOLS: { |
| writer.AppendUint32(values->get_bools().size()); |
| writer.OpenVariant("ab", &variant_writer); |
| variant_writer.OpenArray("b", &array_writer); |
| for (bool value : values->get_bools()) { |
| array_writer.AppendBool(value); |
| } |
| variant_writer.CloseContainer(&array_writer); |
| writer.CloseContainer(&variant_writer); |
| break; |
| } |
| case ui::ozone::mojom::GesturePropValue::Tag::STR: { |
| writer.AppendUint32(1); |
| writer.AppendVariantOfString(values->get_str()); |
| break; |
| } |
| case ui::ozone::mojom::GesturePropValue::Tag::REALS: { |
| writer.AppendUint32(values->get_reals().size()); |
| writer.OpenVariant("ad", &variant_writer); |
| variant_writer.AppendArrayOfDoubles(values->get_reals().data(), |
| values->get_reals().size()); |
| writer.CloseContainer(&variant_writer); |
| break; |
| } |
| default: { |
| // This should never happen. |
| LOG(WARNING) << "No value set on GesturePropValue union; not returning " |
| "values to GetProperty call."; |
| writer.AppendUint32(0); |
| break; |
| } |
| } |
| response_sender.Run(std::move(response)); |
| } |
| |
| void SetPropertyCallback( |
| dbus::MethodCall* method_call, |
| const dbus::ExportedObject::ResponseSender& response_sender, |
| ui::ozone::mojom::SetGesturePropErrorCode error) { |
| std::string error_message; |
| switch (error) { |
| case ui::ozone::mojom::SetGesturePropErrorCode::SUCCESS: |
| response_sender.Run(dbus::Response::FromMethodCall(method_call)); |
| return; |
| case ui::ozone::mojom::SetGesturePropErrorCode::NOT_FOUND: |
| error_message = "The device ID or property name specified was not found."; |
| break; |
| case ui::ozone::mojom::SetGesturePropErrorCode::READ_ONLY: |
| error_message = "That property is read-only."; |
| break; |
| case ui::ozone::mojom::SetGesturePropErrorCode::TYPE_MISMATCH: |
| error_message = |
| "The property is of a different type than the value(s) " |
| "provided."; |
| break; |
| case ui::ozone::mojom::SetGesturePropErrorCode::SIZE_MISMATCH: |
| error_message = |
| "The property has a different number of values to that " |
| "provided."; |
| break; |
| case ui::ozone::mojom::SetGesturePropErrorCode::UNKNOWN_ERROR: |
| default: |
| error_message = "An unknown error occurred."; |
| break; |
| } |
| LOG(ERROR) << "SetProperty error: " << error_message; |
| response_sender.Run(dbus::ErrorResponse::FromMethodCall( |
| method_call, DBUS_ERROR_INVALID_ARGS, error_message)); |
| } |
| |
| void ListDevicesCallback( |
| std::unique_ptr<dbus::Response> response, |
| const dbus::ExportedObject::ResponseSender& response_sender, |
| const base::flat_map<int, std::string>& result) { |
| dbus::MessageWriter writer(response.get()); |
| writer.AppendUint32(result.size()); |
| dbus::MessageWriter dict_writer(nullptr); |
| writer.OpenArray("{is}", &dict_writer); |
| for (const auto& pair : result) { |
| dbus::MessageWriter dict_entry_writer(nullptr); |
| dict_writer.OpenDictEntry(&dict_entry_writer); |
| dict_entry_writer.AppendInt32(pair.first); |
| dict_entry_writer.AppendString(pair.second); |
| dict_writer.CloseContainer(&dict_entry_writer); |
| } |
| writer.CloseContainer(&dict_writer); |
| response_sender.Run(std::move(response)); |
| } |
| |
| void ListPropertiesCallback( |
| std::unique_ptr<dbus::Response> response, |
| const dbus::ExportedObject::ResponseSender& response_sender, |
| const std::vector<std::string>& result) { |
| dbus::MessageWriter writer(response.get()); |
| writer.AppendUint32(result.size()); |
| writer.AppendArrayOfStrings(result); |
| response_sender.Run(std::move(response)); |
| } |
| |
| } // namespace |
| |
| void GesturePropertiesServiceProvider::ListDevices( |
| dbus::MethodCall* method_call, |
| dbus::ExportedObject::ResponseSender response_sender) { |
| std::unique_ptr<dbus::Response> response = |
| dbus::Response::FromMethodCall(method_call); |
| |
| GetService()->ListDevices(base::BindOnce( |
| &ListDevicesCallback, std::move(response), response_sender)); |
| } |
| |
| void GesturePropertiesServiceProvider::ListProperties( |
| dbus::MethodCall* method_call, |
| dbus::ExportedObject::ResponseSender response_sender) { |
| dbus::MessageReader reader(method_call); |
| int32_t device_id; |
| if (!reader.PopInt32(&device_id)) { |
| response_sender.Run(dbus::ErrorResponse::FromMethodCall( |
| method_call, DBUS_ERROR_INVALID_ARGS, |
| "The device ID (int32) is missing.")); |
| return; |
| } |
| |
| std::unique_ptr<dbus::Response> response = |
| dbus::Response::FromMethodCall(method_call); |
| |
| GetService()->ListProperties( |
| device_id, base::BindOnce(&ListPropertiesCallback, std::move(response), |
| response_sender)); |
| } |
| |
| void GesturePropertiesServiceProvider::GetProperty( |
| dbus::MethodCall* method_call, |
| dbus::ExportedObject::ResponseSender response_sender) { |
| dbus::MessageReader reader(method_call); |
| |
| int32_t device_id; |
| std::string property_name; |
| |
| if (!reader.PopInt32(&device_id) || !reader.PopString(&property_name)) { |
| response_sender.Run(dbus::ErrorResponse::FromMethodCall( |
| method_call, DBUS_ERROR_INVALID_ARGS, |
| "The device ID (int32) and/or property name (string) is missing.")); |
| return; |
| } |
| |
| std::unique_ptr<dbus::Response> response = |
| dbus::Response::FromMethodCall(method_call); |
| |
| GetService()->GetProperty( |
| device_id, property_name, |
| base::BindOnce(&GetPropertyCallback, method_call, std::move(response), |
| response_sender)); |
| } |
| |
| static ui::ozone::mojom::GesturePropValuePtr GesturePropValueFromVariant( |
| dbus::MessageReader* variant_reader, |
| std::string* error_message) { |
| std::string string_value; |
| if (variant_reader->PopString(&string_value)) { |
| return ui::ozone::mojom::GesturePropValue::NewStr(string_value); |
| } |
| |
| dbus::MessageReader array_reader(nullptr); |
| if (!variant_reader->PopArray(&array_reader)) { |
| *error_message = |
| "Value(s) should be specified either as a string or an " |
| "array of the appropriate type."; |
| return nullptr; |
| } |
| switch (array_reader.GetDataType()) { |
| case dbus::Message::DataType::INT32: { |
| std::vector<int32_t> values = {}; |
| int32_t value; |
| while (array_reader.PopInt32(&value)) { |
| values.push_back(value); |
| } |
| return ui::ozone::mojom::GesturePropValue::NewInts(values); |
| } |
| case dbus::Message::DataType::INT16: { |
| std::vector<int16_t> values = {}; |
| int16_t value; |
| while (array_reader.PopInt16(&value)) { |
| values.push_back(value); |
| } |
| return ui::ozone::mojom::GesturePropValue::NewShorts(values); |
| } |
| case dbus::Message::DataType::BOOL: { |
| std::vector<bool> values = {}; |
| bool value; |
| while (array_reader.PopBool(&value)) { |
| values.push_back(value); |
| } |
| return ui::ozone::mojom::GesturePropValue::NewBools(values); |
| } |
| case dbus::Message::DataType::DOUBLE: { |
| std::vector<double> values = {}; |
| double value; |
| while (array_reader.PopDouble(&value)) { |
| values.push_back(value); |
| } |
| return ui::ozone::mojom::GesturePropValue::NewReals(values); |
| } |
| case dbus::Message::DataType::STRING: { |
| *error_message = |
| "String properties can only have one value, and so " |
| "should not be specified as arrays."; |
| return nullptr; |
| } |
| default: { |
| *error_message = |
| "Unsupported D-Bus value type; supported types are " |
| "int32, int16, bool, double, and string."; |
| return nullptr; |
| } |
| } |
| } |
| |
| void GesturePropertiesServiceProvider::SetProperty( |
| dbus::MethodCall* method_call, |
| dbus::ExportedObject::ResponseSender response_sender) { |
| dbus::MessageReader reader(method_call); |
| int32_t device_id; |
| std::string property_name; |
| |
| if (!reader.PopInt32(&device_id) || !reader.PopString(&property_name)) { |
| response_sender.Run(dbus::ErrorResponse::FromMethodCall( |
| method_call, DBUS_ERROR_INVALID_ARGS, |
| "The device ID (int32) and/or property name (string) is missing.")); |
| return; |
| } |
| |
| if (!reader.HasMoreData()) { |
| response_sender.Run(dbus::ErrorResponse::FromMethodCall( |
| method_call, DBUS_ERROR_INVALID_ARGS, "No value(s) specified.")); |
| return; |
| } |
| |
| std::string error_message; |
| ui::ozone::mojom::GesturePropValuePtr values = |
| GesturePropValueFromVariant(&reader, &error_message); |
| |
| if (values.is_null()) { |
| response_sender.Run(dbus::ErrorResponse::FromMethodCall( |
| method_call, DBUS_ERROR_INVALID_ARGS, error_message)); |
| return; |
| } |
| |
| GetService()->SetProperty( |
| device_id, property_name, std::move(values), |
| base::BindOnce(&SetPropertyCallback, method_call, response_sender)); |
| } |
| |
| ui::ozone::mojom::GesturePropertiesService* |
| GesturePropertiesServiceProvider::GetService() { |
| if (service_for_test_ != nullptr) |
| return service_for_test_; |
| |
| if (!service_.is_bound()) { |
| ui::ozone::mojom::GesturePropertiesServiceRequest request = |
| mojo::MakeRequest(&service_); |
| ui::OzonePlatform::GetInstance() |
| ->GetInputController() |
| ->GetGesturePropertiesService(std::move(request)); |
| } |
| return service_.get(); |
| } |
| |
| } // namespace ash |
