1 files changed, 199 insertions, 0 deletions
diff --git a/src/plugins/networkinformation/networklistmanager/qnetworklistmanagernetworkinformationbackend.cpp b/src/plugins/networkinformation/networklistmanager/qnetworklistmanagernetworkinformationbackend.cpp
new file mode 100644
index 0000000000..766648486e
--- /dev/null
+++ b/src/plugins/networkinformation/networklistmanager/qnetworklistmanagernetworkinformationbackend.cpp
@@ -0,0 +1,199 @@
+// 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>
+
+#include <QtCore/private/qfunctions_win_p.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
+#if QT_CONFIG(cpp_winrt)
+                                             | QNetworkInformation::Feature::TransportMedium
+                                             | QNetworkInformation::Feature::Metered
+#endif
+                                             );
+    }
+
+    [[nodiscard]] bool start();
+    void stop();
+
+private:
+    bool event(QEvent *event) override;
+    void setConnectivity(NLM_CONNECTIVITY newConnectivity);
+    void checkCaptivePortal();
+
+    QComHelper comHelper;
+
+    ComPtr<QNetworkListManagerEvents> managerEvents;
+
+    NLM_CONNECTIVITY connectivity = NLM_CONNECTIVITY_DISCONNECTED;
+
+    bool monitoring = 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()
+{
+    if (!comHelper.isValid())
+        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()
+{
+    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)
+        qFatal("Moving QNetworkListManagerNetworkInformationBackend to different thread is not supported");
+
+    return QObject::event(event);
+}
+
+bool QNetworkListManagerNetworkInformationBackend::start()
+{
+    Q_ASSERT(!monitoring);
+
+    if (!comHelper.isValid())
+        return false;
+
+    if (!managerEvents)
+        managerEvents = new QNetworkListManagerEvents();
+
+    if (managerEvents->start())
+        monitoring = true;
+    return monitoring;
+}
+
+void QNetworkListManagerNetworkInformationBackend::stop()
+{
+    if (monitoring) {
+        Q_ASSERT(managerEvents);
+        managerEvents->stop();
+        monitoring = false;
+        managerEvents.Reset();
+    }
+}
+
+QT_END_NAMESPACE
+
+#include "qnetworklistmanagernetworkinformationbackend.moc"