blob: 6514141c10d609ad110a48bef2c8232c60718ebf [file] [log] [blame]
/*
*
* Copyright (c) 2024 Project CHIP Authors
*
* 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.
*/
#pragma once
#include <mutex>
#include <string>
#include <vector>
#include <gio/gio.h>
#include <glib.h>
#include <lib/core/CHIPError.h>
#include <platform/GLibTypeDeleter.h>
#include <system/SystemMutex.h>
#include "BluezObjectList.h"
namespace chip {
namespace DeviceLayer {
namespace Internal {
/// Delegate for receiving notifications about various events on the Adapter1
/// interface managed by the BlueZ object manager.
class BluezObjectManagerAdapterNotificationsDelegate
{
public:
virtual ~BluezObjectManagerAdapterNotificationsDelegate() {}
virtual void OnDeviceAdded(BluezDevice1 & device) = 0;
virtual void OnDevicePropertyChanged(BluezDevice1 & device, GVariant * changedProps, const char * const * invalidatedProps) = 0;
virtual void OnDeviceRemoved(BluezDevice1 & device) = 0;
};
class BluezObjectManager
{
public:
BluezObjectManager() = default;
BluezObjectManager(const BluezObjectManager &) = delete;
BluezObjectManager & operator=(const BluezObjectManager &) = delete;
~BluezObjectManager() = default;
CHIP_ERROR Init();
void Shutdown();
// Convenience method to get the D-Bus connection established by this object manager.
GDBusConnection * GetConnection() const { return mConnection.get(); }
// Convenience method to get the BlueZ object manager.
GDBusObjectManager * GetObjectManager() const { return mObjectManager.get(); }
// Get the list of objects in the BlueZ object manager.
BluezObjectList GetObjects() const { return BluezObjectList(mObjectManager.get()); }
// Get the adapter with the given HCI ID.
BluezAdapter1 * GetAdapter(unsigned int aAdapterId);
// Get the adapter with the given Bluetooth address.
BluezAdapter1 * GetAdapter(const char * aAdapterAddress);
// Subscribe to notifications associated with the given adapter.
// In case when the adapter is removed, the subscription will be automatically canceled.
CHIP_ERROR SubscribeDeviceNotifications(BluezAdapter1 * adapter, BluezObjectManagerAdapterNotificationsDelegate * delegate);
// Unsubscribe from notifications associated with the given adapter.
CHIP_ERROR UnsubscribeDeviceNotifications(BluezAdapter1 * adapter, BluezObjectManagerAdapterNotificationsDelegate * delegate);
private:
CHIP_ERROR SetupDBusConnection();
CHIP_ERROR SetupObjectManager();
CHIP_ERROR SetupAdapter(BluezAdapter1 * aAdapter);
void NotifyAdapterAdded(BluezAdapter1 * aAdapter);
void NotifyAdapterRemoved(BluezAdapter1 * aAdapter);
void RemoveAdapterSubscriptions(BluezAdapter1 * aAdapter);
using NotificationsDelegates = std::vector<BluezObjectManagerAdapterNotificationsDelegate *>;
NotificationsDelegates GetDeviceNotificationsDelegates(BluezDevice1 * device);
void OnObjectAdded(GDBusObjectManager * aMgr, BluezObject * aObj);
void OnObjectRemoved(GDBusObjectManager * aMgr, BluezObject * aObj);
void OnInterfacePropertiesChanged(GDBusObjectManagerClient * aMgr, BluezObject * aObj, GDBusProxy * aIface,
GVariant * aChangedProps, const char * const * aInvalidatedProps);
GAutoPtr<GDBusConnection> mConnection;
GAutoPtr<GDBusObjectManager> mObjectManager;
std::mutex mSubscriptionsMutex;
std::vector<std::pair<std::string, BluezObjectManagerAdapterNotificationsDelegate *>>
mSubscriptions CHIP_GUARDED_BY(mSubscriptionsMutex);
};
// Helper function to convert glib error returned by bluez_*_call_*() functions to CHIP_ERROR.
CHIP_ERROR BluezCallToChipError(const GError * aError);
} // namespace Internal
} // namespace DeviceLayer
} // namespace chip