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

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** This file is part of the plugins of the Qt Toolkit.

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** No Commercial Usage

** This file contains pre-release code and may not be distributed.

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** contained in the Technology Preview License Agreement accompanying

** this package.

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** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

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

#include "qnativewifiengine.h"

#include "platformdefs.h"

#include "../qnetworksession_impl.h"

#include <QtNetwork/private/qnetworkconfiguration_p.h>

#include <QtCore/qstringlist.h>

#include <QtCore/qcoreapplication.h>

#include <QtCore/qdebug.h>

#ifndef QT_NO_BEARERMANAGEMENT

QT_BEGIN_NAMESPACE

WlanOpenHandleProto local_WlanOpenHandle = 0;

WlanRegisterNotificationProto local_WlanRegisterNotification = 0;

WlanEnumInterfacesProto local_WlanEnumInterfaces = 0;

WlanGetAvailableNetworkListProto local_WlanGetAvailableNetworkList = 0;

WlanQueryInterfaceProto local_WlanQueryInterface = 0;

WlanConnectProto local_WlanConnect = 0;

WlanDisconnectProto local_WlanDisconnect = 0;

WlanScanProto local_WlanScan = 0;

WlanFreeMemoryProto local_WlanFreeMemory = 0;

WlanCloseHandleProto local_WlanCloseHandle = 0;

void qNotificationCallback(WLAN_NOTIFICATION_DATA *data, QNativeWifiEngine *d)

{

    Q_UNUSED(d);

    switch (data->NotificationCode) {

    case wlan_notification_acm_connection_complete:

    case wlan_notification_acm_disconnected:

        QMetaObject::invokeMethod(d, "scanComplete", Qt::QueuedConnection);

        break;

    default:

        ;

    }

}

QNativeWifiEngine::QNativeWifiEngine(QObject *parent)

:   QBearerEngineImpl(parent), handle(INVALID_HANDLE_VALUE)

{

    connect(QCoreApplication::instance(), SIGNAL(aboutToQuit()), this, SLOT(closeHandle()));

}

QNativeWifiEngine::~QNativeWifiEngine()

{

    closeHandle();

}

void QNativeWifiEngine::scanComplete()

{

    QMutexLocker locker(&mutex);

    if (!available()) {

        locker.unlock();

        emit updateCompleted();

        return;

    }

    // enumerate interfaces

    WLAN_INTERFACE_INFO_LIST *interfaceList;

    DWORD result = local_WlanEnumInterfaces(handle, 0, &interfaceList);

    if (result != ERROR_SUCCESS) {

#ifdef BEARER_MANAGEMENT_DEBUG

        qDebug("%s: WlanEnumInterfaces failed with error %ld\n", __FUNCTION__, result);

#endif

        locker.unlock();

        emit updateCompleted();

        return;

    }

    QStringList previous = accessPointConfigurations.keys();

    for (unsigned int i = 0; i < interfaceList->dwNumberOfItems; ++i) {

        const WLAN_INTERFACE_INFO &interface = interfaceList->InterfaceInfo[i];

        WLAN_AVAILABLE_NETWORK_LIST *networkList;

        result = local_WlanGetAvailableNetworkList(handle, &interface.InterfaceGuid,

                                                   3, 0, &networkList);

        if (result != ERROR_SUCCESS) {

#ifdef BEARER_MANAGEMENT_DEBUG

            qDebug("%s: WlanGetAvailableNetworkList failed with error %ld\n",

                   __FUNCTION__, result);

#endif

            continue;

        }

        QStringList seenNetworks;

        for (unsigned int j = 0; j < networkList->dwNumberOfItems; ++j) {

            WLAN_AVAILABLE_NETWORK &network = networkList->Network[j];

            QString networkName;

            if (network.strProfileName[0] != 0) {

                networkName = QString::fromWCharArray(network.strProfileName);

            } else {

                networkName = QByteArray(reinterpret_cast<char *>(network.dot11Ssid.ucSSID),

                                         network.dot11Ssid.uSSIDLength);

            }

            const QString id = QString::number(qHash(QLatin1String("WLAN:") + networkName));

            previous.removeAll(id);

            QNetworkConfiguration::StateFlags state = QNetworkConfiguration::Undefined;

            if (!(network.dwFlags & WLAN_AVAILABLE_NETWORK_HAS_PROFILE))

                state = QNetworkConfiguration::Undefined;

            if (network.strProfileName[0] != 0) {

                if (network.bNetworkConnectable) {

                    if (network.dwFlags & WLAN_AVAILABLE_NETWORK_CONNECTED)

                        state = QNetworkConfiguration::Active;

                    else

                        state = QNetworkConfiguration::Discovered;

                } else {

                    state = QNetworkConfiguration::Defined;

                }

            }

            if (seenNetworks.contains(networkName))

                continue;

            else

                seenNetworks.append(networkName);

            if (accessPointConfigurations.contains(id)) {

                QNetworkConfigurationPrivatePointer ptr = accessPointConfigurations.value(id);

                bool changed = false;

                ptr->mutex.lock();

                if (!ptr->isValid) {

                    ptr->isValid = true;

                    changed = true;

                }

                if (ptr->name != networkName) {

                    ptr->name = networkName;

                    changed = true;

                }

                if (ptr->state != state) {

                    ptr->state = state;

                    changed = true;

                }

                ptr->mutex.unlock();

                if (changed) {

                    locker.unlock();

                    emit configurationChanged(ptr);

                    locker.relock();

                }

            } else {

                QNetworkConfigurationPrivatePointer ptr(new QNetworkConfigurationPrivate);

                ptr->name = networkName;

                ptr->isValid = true;

                ptr->id = id;

                ptr->state = state;

                ptr->type = QNetworkConfiguration::InternetAccessPoint;

                ptr->bearer = QLatin1String("WLAN");

                accessPointConfigurations.insert(id, ptr);

                locker.unlock();

                emit configurationAdded(ptr);

                locker.relock();

            }

        }

        local_WlanFreeMemory(networkList);

    }

    local_WlanFreeMemory(interfaceList);

    while (!previous.isEmpty()) {

        QNetworkConfigurationPrivatePointer ptr =

            accessPointConfigurations.take(previous.takeFirst());

        locker.unlock();

        emit configurationRemoved(ptr);

        locker.relock();

    }

    locker.unlock();

    emit updateCompleted();

}

QString QNativeWifiEngine::getInterfaceFromId(const QString &id)

{

    QMutexLocker locker(&mutex);

    if (!available())

        return QString();

    // enumerate interfaces

    WLAN_INTERFACE_INFO_LIST *interfaceList;

    DWORD result = local_WlanEnumInterfaces(handle, 0, &interfaceList);

    if (result != ERROR_SUCCESS) {

#ifdef BEARER_MANAGEMENT_DEBUG

        qDebug("%s: WlanEnumInterfaces failed with error %ld\n", __FUNCTION__, result);

#endif

        return QString();

    }

    for (unsigned int i = 0; i < interfaceList->dwNumberOfItems; ++i) {

        const WLAN_INTERFACE_INFO &interface = interfaceList->InterfaceInfo[i];

        DWORD dataSize;

        WLAN_CONNECTION_ATTRIBUTES *connectionAttributes;

        result = local_WlanQueryInterface(handle, &interface.InterfaceGuid,

                                          wlan_intf_opcode_current_connection, 0, &dataSize,

                                          reinterpret_cast<PVOID *>(&connectionAttributes), 0);

        if (result != ERROR_SUCCESS) {

#ifdef BEARER_MANAGEMENT_DEBUG

            if (result != ERROR_INVALID_STATE)

                qDebug("%s: WlanQueryInterface failed with error %ld\n", __FUNCTION__, result);

#endif

            continue;

        }

        if (qHash(QLatin1String("WLAN:") +

                  QString::fromWCharArray(connectionAttributes->strProfileName)) == id.toUInt()) {

            QString guid("{%1-%2-%3-%4%5-%6%7%8%9%10%11}");

            guid = guid.arg(interface.InterfaceGuid.Data1, 8, 16, QChar('0'));

            guid = guid.arg(interface.InterfaceGuid.Data2, 4, 16, QChar('0'));

            guid = guid.arg(interface.InterfaceGuid.Data3, 4, 16, QChar('0'));

            for (int i = 0; i < 8; ++i)

                guid = guid.arg(interface.InterfaceGuid.Data4[i], 2, 16, QChar('0'));

            local_WlanFreeMemory(connectionAttributes);

            local_WlanFreeMemory(interfaceList);

            return guid.toUpper();

        }

        local_WlanFreeMemory(connectionAttributes);

    }

    local_WlanFreeMemory(interfaceList);

    return QString();

}

bool QNativeWifiEngine::hasIdentifier(const QString &id)

{

    QMutexLocker locker(&mutex);

    if (!available())

        return false;

    // enumerate interfaces

    WLAN_INTERFACE_INFO_LIST *interfaceList;

    DWORD result = local_WlanEnumInterfaces(handle, 0, &interfaceList);

    if (result != ERROR_SUCCESS) {

#ifdef BEARER_MANAGEMENT_DEBUG

        qDebug("%s: WlanEnumInterfaces failed with error %ld\n", __FUNCTION__, result);

#endif

        return false;

    }

    for (unsigned int i = 0; i < interfaceList->dwNumberOfItems; ++i) {

        const WLAN_INTERFACE_INFO &interface = interfaceList->InterfaceInfo[i];

        WLAN_AVAILABLE_NETWORK_LIST *networkList;

        result = local_WlanGetAvailableNetworkList(handle, &interface.InterfaceGuid,

                                                   3, 0, &networkList);

        if (result != ERROR_SUCCESS) {

#ifdef BEARER_MANAGEMENT_DEBUG

            qDebug("%s: WlanGetAvailableNetworkList failed with error %ld\n",

                   __FUNCTION__, result);

#endif

            continue;

        }

        for (unsigned int j = 0; j < networkList->dwNumberOfItems; ++j) {

            WLAN_AVAILABLE_NETWORK &network = networkList->Network[j];

            QString networkName;

            if (network.strProfileName[0] != 0) {

                networkName = QString::fromWCharArray(network.strProfileName);

            } else {

                networkName = QByteArray(reinterpret_cast<char *>(network.dot11Ssid.ucSSID),

                                         network.dot11Ssid.uSSIDLength);

            }

            if (qHash(QLatin1String("WLAN:") + networkName) == id.toUInt()) {

                local_WlanFreeMemory(networkList);

                local_WlanFreeMemory(interfaceList);

                return true;

            }

        }

        local_WlanFreeMemory(networkList);

    }

    local_WlanFreeMemory(interfaceList);

    return false;

}

/*QString QNativeWifiEngine::bearerName(const QString &)

{

    return QLatin1String("WLAN");

}*/

void QNativeWifiEngine::connectToId(const QString &id)

{

    QMutexLocker locker(&mutex);

    if (!available()) {

        locker.unlock();

        emit connectionError(id, InterfaceLookupError);

        return;

    }

    WLAN_INTERFACE_INFO_LIST *interfaceList;

    DWORD result = local_WlanEnumInterfaces(handle, 0, &interfaceList);

    if (result != ERROR_SUCCESS) {

#ifdef BEARER_MANAGEMENT_DEBUG

        qDebug("%s: WlanEnumInterfaces failed with error %ld\n", __FUNCTION__, result);

#endif

        locker.unlock();

        emit connectionError(id, InterfaceLookupError);

        return;

    }

    QString profile;

    for (unsigned int i = 0; i < interfaceList->dwNumberOfItems; ++i) {

        const WLAN_INTERFACE_INFO &interface = interfaceList->InterfaceInfo[i];

        WLAN_AVAILABLE_NETWORK_LIST *networkList;

        result = local_WlanGetAvailableNetworkList(handle, &interface.InterfaceGuid,

                                                   3, 0, &networkList);

        if (result != ERROR_SUCCESS) {

#ifdef BEARER_MANAGEMENT_DEBUG

            qDebug("%s: WlanGetAvailableNetworkList failed with error %ld\n",

                   __FUNCTION__, result);

#endif

            continue;

        }

        for (unsigned int j = 0; j < networkList->dwNumberOfItems; ++j) {

            WLAN_AVAILABLE_NETWORK &network = networkList->Network[j];

            profile = QString::fromWCharArray(network.strProfileName);

            if (qHash(QLatin1String("WLAN:") + profile) == id.toUInt())

                break;

            else

                profile.clear();

        }

        local_WlanFreeMemory(networkList);

        if (!profile.isEmpty()) {

            WLAN_CONNECTION_PARAMETERS parameters;

            parameters.wlanConnectionMode = wlan_connection_mode_profile;

            parameters.strProfile = reinterpret_cast<LPCWSTR>(profile.utf16());

            parameters.pDot11Ssid = 0;

            parameters.pDesiredBssidList = 0;

            parameters.dot11BssType = dot11_BSS_type_any;

            parameters.dwFlags = 0;

            DWORD result = local_WlanConnect(handle, &interface.InterfaceGuid, &parameters, 0);

            if (result != ERROR_SUCCESS) {

#ifdef BEARER_MANAGEMENT_DEBUG

                qDebug("%s: WlanConnect failed with error %ld\n", __FUNCTION__, result);

#endif

                locker.unlock();

                emit connectionError(id, ConnectError);

                locker.relock();

                break;

            }

            break;

        }

    }

    local_WlanFreeMemory(interfaceList);

    if (profile.isEmpty()) {

        locker.unlock();

        emit connectionError(id, InterfaceLookupError);

    }

}

void QNativeWifiEngine::disconnectFromId(const QString &id)

{

    QMutexLocker locker(&mutex);

    if (!available()) {

        locker.unlock();

        emit connectionError(id, InterfaceLookupError);

        return;

    }

    QString interface = getInterfaceFromId(id);

    if (interface.isEmpty()) {

        locker.unlock();

        emit connectionError(id, InterfaceLookupError);

        return;

    }

    QStringList split = interface.mid(1, interface.length() - 2).split('-');

    GUID guid;

    guid.Data1 = split.at(0).toUInt(0, 16);

    guid.Data2 = split.at(1).toUShort(0, 16);

    guid.Data3 = split.at(2).toUShort(0, 16);

    guid.Data4[0] = split.at(3).left(2).toUShort(0, 16);

    guid.Data4[1] = split.at(3).right(2).toUShort(0, 16);

    for (int i = 0; i < 6; ++i)

        guid.Data4[i + 2] = split.at(4).mid(i*2, 2).toUShort(0, 16);

    DWORD result = local_WlanDisconnect(handle, &guid, 0);

    if (result != ERROR_SUCCESS) {

#ifdef BEARER_MANAGEMENT_DEBUG

        qDebug("%s: WlanDisconnect failed with error %ld\n", __FUNCTION__, result);

#endif

        locker.unlock();

        emit connectionError(id, DisconnectionError);

        return;

    }

}

void QNativeWifiEngine::initialize()

{

    scanComplete();

}

void QNativeWifiEngine::requestUpdate()

{

    QMutexLocker locker(&mutex);

    if (!available()) {

        locker.unlock();

        emit updateCompleted();

        return;

    }

    // enumerate interfaces

    WLAN_INTERFACE_INFO_LIST *interfaceList;

    DWORD result = local_WlanEnumInterfaces(handle, 0, &interfaceList);

    if (result != ERROR_SUCCESS) {

#ifdef BEARER_MANAGEMENT_DEBUG

        qDebug("%s: WlanEnumInterfaces failed with error %ld\n", __FUNCTION__, result);

#endif

        locker.unlock();

        emit updateCompleted();

        return;

    }

    bool requested = false;

    for (unsigned int i = 0; i < interfaceList->dwNumberOfItems; ++i) {

        result = local_WlanScan(handle, &interfaceList->InterfaceInfo[i].InterfaceGuid, 0, 0, 0);

        if (result != ERROR_SUCCESS) {

#ifdef BEARER_MANAGEMENT_DEBUG

            qDebug("%s: WlanScan failed with error %ld\n", __FUNCTION__, result);

#endif

        } else {

            requested = true;

        }

    }

    local_WlanFreeMemory(interfaceList);

    if (!requested) {

        locker.unlock();

        emit updateCompleted();