remotedevicemanager.cpp

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// Copyright (C) 2017 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

#include <QtCore/QLoggingCategory>

#include "remotedevicemanager_p.h"

#include "bluez5_helper_p.h"

#include "device1_bluez5_p.h"

#include "objectmanager_p.h"

QT_BEGIN_NAMESPACE

Q_DECLARE_LOGGING_CATEGORY(QT_BT_BLUEZ)

using namespace QtBluetoothPrivate; // for D-Bus wrappers

/*!

    \class RemoteDeviceManager

    \inmodule QtBluetooth

    \internal

    Convenience wrapper around org.bluez.Device1 management.

    Very simple and not thread safe.

*/

RemoteDeviceManager::RemoteDeviceManager(

        const QBluetoothAddress &address, QObject *parent)

    : QObject(parent), localAddress(address)

    initializeBluez5();

    bool ok = false;

    adapterPath = findAdapterForAddress(address, &ok);

    if (!ok || adapterPath.isEmpty()) {

        qCWarning(QT_BT_BLUEZ) << "Cannot initialize RemoteDeviceManager";

bool RemoteDeviceManager::scheduleJob(JobType job, const QList<QBluetoothAddress> &remoteDevices)

    if (adapterPath.isEmpty())

        return false;

    for (const auto& remote : remoteDevices)

        jobQueue.push_back(std::make_pair(job, remote));

    QTimer::singleShot(0, this, [this](){ runQueue(); });

    return true;

void RemoteDeviceManager::runQueue()

    if (jobInProgress || adapterPath.isEmpty())

        return;

    if (jobQueue.empty())

        return;

    jobInProgress = true;

    switch (jobQueue.front().first) {

    case JobType::JobDisconnectDevice:

        disconnectDevice(jobQueue.front().second);

        break;

    default:

        break;

void RemoteDeviceManager::prepareNextJob()

    Q_ASSERT(!jobQueue.empty());

    jobQueue.pop_front();

    jobInProgress = false;

    qCDebug(QT_BT_BLUEZ) << "RemoteDeviceManager job queue status:" << jobQueue.empty();

    if (jobQueue.empty())

        emit finished();

    else

        runQueue();

void RemoteDeviceManager::disconnectDevice(const QBluetoothAddress &remote)

    // collect initial set of information

    OrgFreedesktopDBusObjectManagerInterface managerBluez5(

                                               QStringLiteral("org.bluez"),

                                               QStringLiteral("/"),

                                               QDBusConnection::systemBus(), this);

    QDBusPendingReply<ManagedObjectList> reply = managerBluez5.GetManagedObjects();

    reply.waitForFinished();

    if (reply.isError()) {

        QTimer::singleShot(0, this, [this](){ prepareNextJob(); });

        return;

    bool jobStarted = false;

    ManagedObjectList managedObjectList = reply.value();

    for (auto it = managedObjectList.constBegin(); it != managedObjectList.constEnd(); ++it) {

        const QDBusObjectPath &path = it.key();

        const InterfaceList &ifaceList = it.value();

        for (auto jt = ifaceList.constBegin(); jt != ifaceList.constEnd(); ++jt) {

            const QString &iface = jt.key();

            if (path.path().indexOf(adapterPath) != 0)

                continue; //devices whose path doesn't start with same path we skip

            if (iface != QStringLiteral("org.bluez.Device1"))

                continue;

            const QBluetoothAddress foundAddress(ifaceList.value(iface).value(QStringLiteral("Address")).toString());

            if (foundAddress != remote)

                continue;

            // found the correct Device1 path

            OrgBluezDevice1Interface* device1 = new OrgBluezDevice1Interface(QStringLiteral("org.bluez"),

                                                                             path.path(),

                                                                             QDBusConnection::systemBus(),

                                                                             this);

            QDBusPendingReply<> asyncReply = device1->Disconnect();

            QDBusPendingCallWatcher* watcher = new QDBusPendingCallWatcher(asyncReply, this);

            const auto watcherFinished = [this, device1](QDBusPendingCallWatcher* call) {

                call->deleteLater();

                device1->deleteLater();

                prepareNextJob();

};

            connect(watcher, &QDBusPendingCallWatcher::finished, this, watcherFinished);

            jobStarted = true;

            break;

    if (!jobStarted) {

        qCDebug(QT_BT_BLUEZ) << "RemoteDeviceManager JobDisconnectDevice failed";

        QTimer::singleShot(0, this, [this](){ prepareNextJob(); });

QT_END_NAMESPACE

#include "moc_remotedevicemanager_p.cpp"