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****************************************************************************/

#include "qgenericengine_p.h"

#include "qnetworkconfiguration_p.h"

#include <QtCore/qthread.h>

#include <QtCore/qmutex.h>

#include <QtCore/qcoreapplication.h>

#include <QtCore/qstringlist.h>

#include <QtCore/qdebug.h>

#ifdef Q_OS_WIN

#include "qnetworksessionengine_win_p.h"

#endif

#ifdef Q_OS_LINUX

#include <sys/socket.h>

#include <sys/ioctl.h>

#include <net/if.h>

#include <net/if_arp.h>

#endif

QTM_BEGIN_NAMESPACE

Q_GLOBAL_STATIC(QGenericEngine, genericEngine)

static QString qGetInterfaceType(const QString &interface)

{

#ifdef Q_OS_WIN32

    unsigned long oid;

    DWORD bytesWritten;

    NDIS_MEDIUM medium;

    NDIS_PHYSICAL_MEDIUM physicalMedium;

    HANDLE handle = CreateFile((TCHAR *)QString("\\\\.\\%1").arg(interface).utf16(), 0,

                               FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);

    if (handle == INVALID_HANDLE_VALUE)

        return QLatin1String("Unknown");

    oid = OID_GEN_MEDIA_SUPPORTED;

    bytesWritten = 0;

    bool result = DeviceIoControl(handle, IOCTL_NDIS_QUERY_GLOBAL_STATS, &oid, sizeof(oid),

                                  &medium, sizeof(medium), &bytesWritten, 0);

    if (!result) {

        CloseHandle(handle);

        return QLatin1String("Unknown");

    }

    oid = OID_GEN_PHYSICAL_MEDIUM;

    bytesWritten = 0;

    result = DeviceIoControl(handle, IOCTL_NDIS_QUERY_GLOBAL_STATS, &oid, sizeof(oid),

                             &physicalMedium, sizeof(physicalMedium), &bytesWritten, 0);

    if (!result) {

        CloseHandle(handle);

        if (medium == NdisMedium802_3)

            return QLatin1String("Ethernet");

        else

            return QLatin1String("Unknown");

    }

    CloseHandle(handle);

    if (medium == NdisMedium802_3) {

        switch (physicalMedium) {

        case NdisPhysicalMediumWirelessLan:

            return QLatin1String("WLAN");

        case NdisPhysicalMediumBluetooth:

            return QLatin1String("Bluetooth");

        case NdisPhysicalMediumWiMax:

            return QLatin1String("WiMAX");

        default:

#ifdef BEARER_MANAGEMENT_DEBUG

            qDebug() << "Physical Medium" << physicalMedium;

#endif

            return QLatin1String("Ethernet");

        }

    }

#ifdef BEARER_MANAGEMENT_DEBUG

    qDebug() << medium << physicalMedium;

#endif

#elif defined(Q_OS_LINUX)

    int sock = socket(AF_INET, SOCK_DGRAM, 0);

    ifreq request;

    strncpy(request.ifr_name, interface.toLocal8Bit().data(), sizeof(request.ifr_name));

    int result = ioctl(sock, SIOCGIFHWADDR, &request);

    close(sock);

    if (result >= 0 && request.ifr_hwaddr.sa_family == ARPHRD_ETHER)

        return QLatin1String("Ethernet");

#else

    Q_UNUSED(interface);

#endif

    return QLatin1String("Unknown");

}

QGenericEngine::QGenericEngine(QObject *parent)

:   QNetworkSessionEngine(parent)

{

    connect(&pollTimer, SIGNAL(timeout()), this, SIGNAL(configurationsChanged()));

    pollTimer.setInterval(10000);

}

QGenericEngine::~QGenericEngine()

{

}

QList<QNetworkConfigurationPrivate *> QGenericEngine::getConfigurations(bool *ok)

{

    if (ok)

        *ok = true;

    QList<QNetworkConfigurationPrivate *> foundConfigurations;

    // Immediately after connecting with a wireless access point

    // QNetworkInterface::allInterfaces() will sometimes return an empty list. Calling it again a

    // second time results in a non-empty list. If we loose interfaces we will end up removing

    // network configurations which will break current sessions.

    QList<QNetworkInterface> interfaces = QNetworkInterface::allInterfaces();

    if (interfaces.isEmpty())

        interfaces = QNetworkInterface::allInterfaces();

    // create configuration for each interface

    while (!interfaces.isEmpty()) {

        QNetworkInterface interface = interfaces.takeFirst();

        if (!interface.isValid())

            continue;

        // ignore loopback interface

        if (interface.flags() & QNetworkInterface::IsLoopBack)

            continue;

        // ignore WLAN interface handled in separate engine

        if (qGetInterfaceType(interface.name()) == "WLAN")

            continue;

        QNetworkConfigurationPrivate *cpPriv = new QNetworkConfigurationPrivate;

        const QString humanReadableName = interface.humanReadableName();

        cpPriv->name = humanReadableName.isEmpty() ? interface.name() : humanReadableName;

        cpPriv->isValid = true;

        uint identifier;

        if (interface.index())

            identifier = qHash(QLatin1String("NLA:") + QString::number(interface.index()));

        else

            identifier = qHash(QLatin1String("NLA:") + interface.hardwareAddress());

        cpPriv->id = QString::number(identifier);

        cpPriv->state = QNetworkConfiguration::Discovered;

        cpPriv->type = QNetworkConfiguration::InternetAccessPoint;

        if (interface.name().isEmpty())

            cpPriv->bearer = QLatin1String("Unknown");

        else

            cpPriv->bearer = qGetInterfaceType(interface.name());

        if((interface.flags() & QNetworkInterface::IsUp) && !interface.addressEntries().isEmpty())

            cpPriv->state |= QNetworkConfiguration::Active;

        configurationInterface[identifier] = interface.name();

        foundConfigurations.append(cpPriv);

    }

    pollTimer.start();

    return foundConfigurations;

}

QString QGenericEngine::getInterfaceFromId(const QString &id)

{

    return configurationInterface.value(id.toUInt());

}

bool QGenericEngine::hasIdentifier(const QString &id)

{

    return configurationInterface.contains(id.toUInt());

}

/*QString QGenericEngine::bearerName(const QString &id)

{

    QString interface = getInterfaceFromId(id);

    if (interface.isEmpty())

        return QLatin1String("Unknown");

    return qGetInterfaceType(interface);

}*/

void QGenericEngine::connectToId(const QString &id)

{

    emit connectionError(id, OperationNotSupported);

}

void QGenericEngine::disconnectFromId(const QString &id)

{

    emit connectionError(id, OperationNotSupported);

}

void QGenericEngine::requestUpdate()

{

    emit configurationsChanged();

}

QGenericEngine *QGenericEngine::instance()

{

    return genericEngine();

}

#include "moc_qgenericengine_p.cpp"

QTM_END_NAMESPACE