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// Copyright (C) 2021 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 <QtNetwork/private/qnetworkinformation_p.h>
#include "qnetworklistmanagerevents.h"
#include <QtCore/qglobal.h>
#include <QtCore/private/qobject_p.h>
#include <QtCore/qscopeguard.h>
QT_BEGIN_NAMESPACE
// Declared in qnetworklistmanagerevents.h
Q_LOGGING_CATEGORY(lcNetInfoNLM, "qt.network.info.netlistmanager");
static QString backendName()
{
return QString::fromUtf16(QNetworkInformationBackend::PluginNames
[QNetworkInformationBackend::PluginNamesWindowsIndex]);
}
namespace {
bool testCONNECTIVITY(NLM_CONNECTIVITY connectivity, NLM_CONNECTIVITY flag)
{
return (connectivity & flag) == flag;
}
QNetworkInformation::Reachability reachabilityFromNLM_CONNECTIVITY(NLM_CONNECTIVITY connectivity)
{
if (connectivity == NLM_CONNECTIVITY_DISCONNECTED)
return QNetworkInformation::Reachability::Disconnected;
if (testCONNECTIVITY(connectivity, NLM_CONNECTIVITY_IPV6_INTERNET)
|| testCONNECTIVITY(connectivity, NLM_CONNECTIVITY_IPV4_INTERNET)) {
return QNetworkInformation::Reachability::Online;
}
if (testCONNECTIVITY(connectivity, NLM_CONNECTIVITY_IPV6_SUBNET)
|| testCONNECTIVITY(connectivity, NLM_CONNECTIVITY_IPV4_SUBNET)) {
return QNetworkInformation::Reachability::Site;
}
if (testCONNECTIVITY(connectivity, NLM_CONNECTIVITY_IPV6_LOCALNETWORK)
|| testCONNECTIVITY(connectivity, NLM_CONNECTIVITY_IPV4_LOCALNETWORK)) {
return QNetworkInformation::Reachability::Local;
}
if (testCONNECTIVITY(connectivity, NLM_CONNECTIVITY_IPV6_NOTRAFFIC)
|| testCONNECTIVITY(connectivity, NLM_CONNECTIVITY_IPV4_NOTRAFFIC)) {
return QNetworkInformation::Reachability::Unknown;
}
return QNetworkInformation::Reachability::Unknown;
}
}
class QNetworkListManagerNetworkInformationBackend : public QNetworkInformationBackend
{
Q_OBJECT
public:
QNetworkListManagerNetworkInformationBackend();
~QNetworkListManagerNetworkInformationBackend();
QString name() const override { return backendName(); }
QNetworkInformation::Features featuresSupported() const override
{
return featuresSupportedStatic();
}
static QNetworkInformation::Features featuresSupportedStatic()
{
return QNetworkInformation::Features(QNetworkInformation::Feature::Reachability
| QNetworkInformation::Feature::CaptivePortal
#ifdef SUPPORTS_WINRT
| QNetworkInformation::Feature::TransportMedium
#endif
);
}
[[nodiscard]] bool start();
void stop();
private:
bool event(QEvent *event) override;
void setConnectivity(NLM_CONNECTIVITY newConnectivity);
void checkCaptivePortal();
ComPtr<QNetworkListManagerEvents> managerEvents;
NLM_CONNECTIVITY connectivity = NLM_CONNECTIVITY_DISCONNECTED;
bool monitoring = false;
bool comInitFailed = false;
};
class QNetworkListManagerNetworkInformationBackendFactory : public QNetworkInformationBackendFactory
{
Q_OBJECT
Q_PLUGIN_METADATA(IID QNetworkInformationBackendFactory_iid)
Q_INTERFACES(QNetworkInformationBackendFactory)
public:
QNetworkListManagerNetworkInformationBackendFactory() = default;
~QNetworkListManagerNetworkInformationBackendFactory() = default;
QString name() const override { return backendName(); }
QNetworkInformation::Features featuresSupported() const override
{
return QNetworkListManagerNetworkInformationBackend::featuresSupportedStatic();
}
QNetworkInformationBackend *
create(QNetworkInformation::Features requiredFeatures) const override
{
if ((requiredFeatures & featuresSupported()) != requiredFeatures)
return nullptr;
auto backend = new QNetworkListManagerNetworkInformationBackend();
if (!backend->start()) {
qCWarning(lcNetInfoNLM) << "Failed to start listening to events";
delete backend;
backend = nullptr;
}
return backend;
}
};
QNetworkListManagerNetworkInformationBackend::QNetworkListManagerNetworkInformationBackend()
{
auto hr = CoInitialize(nullptr);
if (FAILED(hr)) {
qCWarning(lcNetInfoNLM) << "Failed to initialize COM:" << errorStringFromHResult(hr);
comInitFailed = true;
return;
}
managerEvents = new QNetworkListManagerEvents();
connect(managerEvents.Get(), &QNetworkListManagerEvents::connectivityChanged, this,
&QNetworkListManagerNetworkInformationBackend::setConnectivity);
connect(managerEvents.Get(), &QNetworkListManagerEvents::transportMediumChanged, this,
&QNetworkListManagerNetworkInformationBackend::setTransportMedium);
connect(managerEvents.Get(), &QNetworkListManagerEvents::isMeteredChanged, this,
&QNetworkListManagerNetworkInformationBackend::setMetered);
}
QNetworkListManagerNetworkInformationBackend::~QNetworkListManagerNetworkInformationBackend()
{
if (comInitFailed)
return;
stop();
}
void QNetworkListManagerNetworkInformationBackend::setConnectivity(NLM_CONNECTIVITY newConnectivity)
{
if (reachabilityFromNLM_CONNECTIVITY(connectivity)
!= reachabilityFromNLM_CONNECTIVITY(newConnectivity)) {
connectivity = newConnectivity;
setReachability(reachabilityFromNLM_CONNECTIVITY(newConnectivity));
// @future: only check if signal is connected
checkCaptivePortal();
}
}
void QNetworkListManagerNetworkInformationBackend::checkCaptivePortal()
{
setBehindCaptivePortal(managerEvents->checkBehindCaptivePortal());
}
bool QNetworkListManagerNetworkInformationBackend::event(QEvent *event)
{
if (event->type() == QEvent::ThreadChange && monitoring) {
stop();
QMetaObject::invokeMethod(this, &QNetworkListManagerNetworkInformationBackend::start,
Qt::QueuedConnection);
}
return QObject::event(event);
}
bool QNetworkListManagerNetworkInformationBackend::start()
{
Q_ASSERT(!monitoring);
if (comInitFailed) {
auto hr = CoInitialize(nullptr);
if (FAILED(hr)) {
qCWarning(lcNetInfoNLM) << "Failed to initialize COM:" << errorStringFromHResult(hr);
comInitFailed = true;
return false;
}
comInitFailed = false;
}
if (!managerEvents)
managerEvents = new QNetworkListManagerEvents();
if (managerEvents->start())
monitoring = true;
return monitoring;
}
void QNetworkListManagerNetworkInformationBackend::stop()
{
if (monitoring) {
Q_ASSERT(managerEvents);
// Can return false but realistically shouldn't since that would break everything:
managerEvents->stop();
monitoring = false;
managerEvents.Reset();
}
CoUninitialize();
comInitFailed = true; // we check this value in start() to see if we need to re-initialize
}
QT_END_NAMESPACE
#include "qnetworklistmanagernetworkinformationbackend.moc"
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