source: trunk/src/network/kernel/qnetworkinterface.cpp@ 116

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#include "qnetworkinterface.h"
#include "qnetworkinterface_p.h"

#include "qdebug.h"
#include "qendian.h"

#ifndef QT_NO_NETWORKINTERFACE

QT_BEGIN_NAMESPACE

static QList<QNetworkInterfacePrivate *> postProcess(QList<QNetworkInterfacePrivate *> list)
{
    // Some platforms report a netmask but don't report a broadcast address
    // Go through all available addresses and calculate the broadcast address
    // from the IP and the netmask
    //
    // This is an IPv4-only thing -- IPv6 has no concept of broadcasts
    // The math is:
    //    broadcast = IP | ~netmask

    QList<QNetworkInterfacePrivate *>::Iterator it = list.begin();
    const QList<QNetworkInterfacePrivate *>::Iterator end = list.end();
    for ( ; it != end; ++it) {
        QList<QNetworkAddressEntry>::Iterator addr_it = (*it)->addressEntries.begin();
        const QList<QNetworkAddressEntry>::Iterator addr_end = (*it)->addressEntries.end();
        for ( ; addr_it != addr_end; ++addr_it) {
            if (addr_it->ip().protocol() != QAbstractSocket::IPv4Protocol)
                continue;

            if (!addr_it->netmask().isNull() && addr_it->broadcast().isNull()) {
                QHostAddress bcast = addr_it->ip();
                bcast = QHostAddress(bcast.toIPv4Address() | ~addr_it->netmask().toIPv4Address());
                addr_it->setBroadcast(bcast);
            }
        }
    }

    return list;
}

Q_GLOBAL_STATIC(QNetworkInterfaceManager, manager)

QNetworkInterfaceManager::QNetworkInterfaceManager()
{
}

QNetworkInterfaceManager::~QNetworkInterfaceManager()
{
}

QSharedDataPointer<QNetworkInterfacePrivate> QNetworkInterfaceManager::interfaceFromName(const QString &name)
{
    QList<QSharedDataPointer<QNetworkInterfacePrivate> > interfaceList = allInterfaces();
    QList<QSharedDataPointer<QNetworkInterfacePrivate> >::ConstIterator it = interfaceList.constBegin();
    for ( ; it != interfaceList.constEnd(); ++it)
        if ((*it)->name == name)
            return *it;

    return empty;
}

QSharedDataPointer<QNetworkInterfacePrivate> QNetworkInterfaceManager::interfaceFromIndex(int index)
{
    QList<QSharedDataPointer<QNetworkInterfacePrivate> > interfaceList = allInterfaces();
    QList<QSharedDataPointer<QNetworkInterfacePrivate> >::ConstIterator it = interfaceList.constBegin();
    for ( ; it != interfaceList.constEnd(); ++it)
        if ((*it)->index == index)
            return *it;

    return empty;
}

QList<QSharedDataPointer<QNetworkInterfacePrivate> > QNetworkInterfaceManager::allInterfaces()
{
    QList<QNetworkInterfacePrivate *> list = postProcess(scan());
    QList<QSharedDataPointer<QNetworkInterfacePrivate> > result;

    foreach (QNetworkInterfacePrivate *ptr, list)
        result << QSharedDataPointer<QNetworkInterfacePrivate>(ptr);

    return result;
}

QString QNetworkInterfacePrivate::makeHwAddress(int len, uchar *data)
{
    QString result;
    for (int i = 0; i < len; ++i) {
        if (i)
            result += QLatin1Char(':');
        
        char buf[3];
#if defined(Q_OS_WIN) && !defined(Q_OS_WINCE) && defined(_MSC_VER) && _MSC_VER >= 1400
        sprintf_s(buf, 3, "%02hX", ushort(data[i]));
#else
        sprintf(buf, "%02hX", ushort(data[i]));
#endif
        result += QLatin1String(buf);
    }
    return result;
}

/*!
    \class QNetworkAddressEntry
    \brief The QNetworkAddressEntry class stores one IP address
    supported by a network interface, along with its associated
    netmask and broadcast address.

    \since 4.2