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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.
- #ifndef DEVICE_BLUETOOTH_DBUS_BLUETOOTH_GATT_DESCRIPTOR_SERVICE_PROVIDER_IMPL_H_
- #define DEVICE_BLUETOOTH_DBUS_BLUETOOTH_GATT_DESCRIPTOR_SERVICE_PROVIDER_IMPL_H_
- #include <stdint.h>
- #include <string>
- #include <vector>
- #include "base/memory/raw_ptr.h"
- #include "base/memory/ref_counted.h"
- #include "base/memory/weak_ptr.h"
- #include "base/threading/platform_thread.h"
- #include "dbus/bus.h"
- #include "dbus/exported_object.h"
- #include "dbus/message.h"
- #include "dbus/object_path.h"
- #include "device/bluetooth/dbus/bluetooth_gatt_attribute_value_delegate.h"
- #include "device/bluetooth/dbus/bluetooth_gatt_descriptor_service_provider.h"
- namespace bluez {
- // The BluetoothGattDescriptorServiceProvider implementation used in production.
- class DEVICE_BLUETOOTH_EXPORT BluetoothGattDescriptorServiceProviderImpl
- : public BluetoothGattDescriptorServiceProvider {
- public:
- // Use nullptr for |bus| to create for testing.
- BluetoothGattDescriptorServiceProviderImpl(
- dbus::Bus* bus,
- const dbus::ObjectPath& object_path,
- std::unique_ptr<BluetoothGattAttributeValueDelegate> delegate,
- const std::string& uuid,
- const std::vector<std::string>& flags,
- const dbus::ObjectPath& characteristic_path);
- BluetoothGattDescriptorServiceProviderImpl(
- const BluetoothGattDescriptorServiceProviderImpl&) = delete;
- BluetoothGattDescriptorServiceProviderImpl& operator=(
- const BluetoothGattDescriptorServiceProviderImpl&) = delete;
- ~BluetoothGattDescriptorServiceProviderImpl() override;
- // BluetoothGattDescriptorServiceProvider override.
- void SendValueChanged(const std::vector<uint8_t>& value) override;
- private:
- // Returns true if the current thread is on the origin thread.
- bool OnOriginThread();
- // Called by dbus:: when the Bluetooth daemon fetches a single property of
- // the descriptor.
- void Get(dbus::MethodCall* method_call,
- dbus::ExportedObject::ResponseSender response_sender);
- // Called by dbus:: when the Bluetooth daemon sets a single property of the
- // descriptor.
- void Set(dbus::MethodCall* method_call,
- dbus::ExportedObject::ResponseSender response_sender);
- // Called by dbus:: when the Bluetooth daemon fetches all properties of the
- // descriptor.
- void GetAll(dbus::MethodCall* method_call,
- dbus::ExportedObject::ResponseSender response_sender);
- // Called by BlueZ when a remote central is requesting to read the value of
- // this descriptor.
- void ReadValue(dbus::MethodCall* method_call,
- dbus::ExportedObject::ResponseSender response_sender);
- // Called by BlueZ when a remote central is requesting to write the value of
- // this descriptor.
- void WriteValue(dbus::MethodCall* method_call,
- dbus::ExportedObject::ResponseSender response_sender);
- // Called by dbus:: when a method is exported.
- void OnExported(const std::string& interface_name,
- const std::string& method_name,
- bool success);
- // Writes the descriptor's properties into the provided writer.
- void WriteProperties(dbus::MessageWriter* writer) override;
- // Called by the Delegate in response to a method to call to read the value
- // of this descriptor.
- void OnReadValue(
- dbus::MethodCall* method_call,
- dbus::ExportedObject::ResponseSender response_sender,
- absl::optional<device::BluetoothGattService::GattErrorCode> error_code,
- const std::vector<uint8_t>& value);
- // Called by the Delegate in response to a method to call to write the value
- // of this descriptor.
- void OnWriteValue(dbus::MethodCall* method_call,
- dbus::ExportedObject::ResponseSender response_sender);
- // Called by the Delegate in response to a failed method call to set
- // the descriptor value.
- void OnWriteFailure(dbus::MethodCall* method_call,
- dbus::ExportedObject::ResponseSender response_sender);
- const dbus::ObjectPath& object_path() const override;
- // Origin thread (i.e. the UI thread in production).
- base::PlatformThreadId origin_thread_id_;
- // 128-bit descriptor UUID of this object.
- std::string uuid_;
- // Permissions for this descriptor.
- std::vector<std::string> flags_;
- // D-Bus bus object is exported on, not owned by this object and must
- // outlive it.
- raw_ptr<dbus::Bus> bus_;
- // Incoming methods to get and set the "Value" property are passed on to the
- // delegate and callbacks passed to generate a reply. |delegate_| is generally
- // the object that owns this one and must outlive it.
- std::unique_ptr<BluetoothGattAttributeValueDelegate> delegate_;
- // D-Bus object path of object we are exporting, kept so we can unregister
- // again in our destructor.
- dbus::ObjectPath object_path_;
- // Object path of the GATT characteristic that the exported descriptor belongs
- // to.
- dbus::ObjectPath characteristic_path_;
- // D-Bus object we are exporting, owned by this object.
- scoped_refptr<dbus::ExportedObject> exported_object_;
- // Weak pointer factory for generating 'this' pointers that might live longer
- // than we do.
- // Note: This should remain the last member so it'll be destroyed and
- // invalidate its weak pointers before any other members are destroyed.
- base::WeakPtrFactory<BluetoothGattDescriptorServiceProviderImpl>
- weak_ptr_factory_{this};
- };
- } // namespace bluez
- #endif // DEVICE_BLUETOOTH_DBUS_BLUETOOTH_GATT_DESCRIPTOR_SERVICE_PROVIDER_IMPL_H_
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