qnetworkinterface.cpp

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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;
}

QNetworkAddressEntry::QNetworkAddressEntry()
    : d(new QNetworkAddressEntryPrivate)
{
}

QNetworkAddressEntry::QNetworkAddressEntry(const QNetworkAddressEntry &other)
    : d(new QNetworkAddressEntryPrivate(*other.d.data()))
{
}

QNetworkAddressEntry &QNetworkAddressEntry::operator=(const QNetworkAddressEntry &other)
{
    *d.data() = *other.d.data();
    return *this;
}

QNetworkAddressEntry::~QNetworkAddressEntry()
{
}

bool QNetworkAddressEntry::operator==(const QNetworkAddressEntry &other) const
{
    if (d == other.d) return true;
    if (!d || !other.d) return false;
    return d->address == other.d->address &&
        d->netmask == other.d->netmask &&
        d->broadcast == other.d->broadcast;
}

QHostAddress QNetworkAddressEntry::ip() const
{
    return d->address;
}

void QNetworkAddressEntry::setIp(const QHostAddress &newIp)
{
    d->address = newIp;
}

QHostAddress QNetworkAddressEntry::netmask() const
{
    return d->netmask;
}

void QNetworkAddressEntry::setNetmask(const QHostAddress &newNetmask)
{
    if (newNetmask.protocol() != ip().protocol()) {
        d->netmask = QNetmaskAddress();
        return;
    }

    d->netmask.setAddress(newNetmask);
}

int QNetworkAddressEntry::prefixLength() const
{
    return d->netmask.prefixLength();
}

void QNetworkAddressEntry::setPrefixLength(int length)
{
    d->netmask.setPrefixLength(d->address.protocol(), length);
}

QHostAddress QNetworkAddressEntry::broadcast() const
{
    return d->broadcast;
}

void QNetworkAddressEntry::setBroadcast(const QHostAddress &newBroadcast)
{
    d->broadcast = newBroadcast;
}

QNetworkInterface::QNetworkInterface()
    : d(0)
{
}

QNetworkInterface::~QNetworkInterface()
{
}

QNetworkInterface::QNetworkInterface(const QNetworkInterface &other)
    : d(other.d)
{
}

QNetworkInterface &QNetworkInterface::operator=(const QNetworkInterface &other)
{
    d = other.d;
    return *this;
}

bool QNetworkInterface::isValid() const
{
    return !name().isEmpty();
}

int QNetworkInterface::index() const
{
    return d ? d->index : 0;
}

QString QNetworkInterface::name() const
{
    return d ? d->name : QString();
}

QString QNetworkInterface::humanReadableName() const
{
    return d ? !d->friendlyName.isEmpty() ? d->friendlyName : name() : QString();
}

QNetworkInterface::InterfaceFlags QNetworkInterface::flags() const
{
    return d ? d->flags : InterfaceFlags(0);
}

QString QNetworkInterface::hardwareAddress() const
{
    return d ? d->hardwareAddress : QString();
}

QList<QNetworkAddressEntry> QNetworkInterface::addressEntries() const
{
    return d ? d->addressEntries : QList<QNetworkAddressEntry>();
}

QNetworkInterface QNetworkInterface::interfaceFromName(const QString &name)
{
    QNetworkInterface result;
    result.d = manager()->interfaceFromName(name);
    return result;
}

QNetworkInterface QNetworkInterface::interfaceFromIndex(int index)
{
    QNetworkInterface result;
    result.d = manager()->interfaceFromIndex(index);
    return result;
}

QList<QNetworkInterface> QNetworkInterface::allInterfaces()
{
    QList<QSharedDataPointer<QNetworkInterfacePrivate> > privs = manager()->allInterfaces();
    QList<QNetworkInterface> result;
    foreach (const QSharedDataPointer<QNetworkInterfacePrivate> &p, privs) {
        QNetworkInterface item;
        item.d = p;
        result << item;
    }

    return result;
}

QList<QHostAddress> QNetworkInterface::allAddresses()
{
    QList<QSharedDataPointer<QNetworkInterfacePrivate> > privs = manager()->allInterfaces();
    QList<QHostAddress> result;
    foreach (const QSharedDataPointer<QNetworkInterfacePrivate> &p, privs) {
        foreach (const QNetworkAddressEntry &entry, p->addressEntries)
            result += entry.ip();
    }

    return result;
}

#ifndef QT_NO_DEBUG_STREAM
static inline QDebug flagsDebug(QDebug debug, QNetworkInterface::InterfaceFlags flags)
{
    if (flags & QNetworkInterface::IsUp)
        debug.nospace() << "IsUp ";
    if (flags & QNetworkInterface::IsRunning)
        debug.nospace() << "IsRunning ";
    if (flags & QNetworkInterface::CanBroadcast)
        debug.nospace() << "CanBroadcast ";
    if (flags & QNetworkInterface::IsLoopBack)
        debug.nospace() << "IsLoopBack ";
    if (flags & QNetworkInterface::IsPointToPoint)
        debug.nospace() << "IsPointToPoint ";
    if (flags & QNetworkInterface::CanMulticast)
        debug.nospace() << "CanMulticast ";
    return debug.nospace();
}

static inline QDebug operator<<(QDebug debug, const QNetworkAddressEntry &entry)
{
    debug.nospace() << "(address = " << entry.ip();
    if (!entry.netmask().isNull())
        debug.nospace() << ", netmask = " << entry.netmask();
    if (!entry.broadcast().isNull())
        debug.nospace() << ", broadcast = " << entry.broadcast();
    debug.nospace() << ')';
    return debug.space();
}

QDebug operator<<(QDebug debug, const QNetworkInterface &networkInterface)
{
    debug.nospace() << "QNetworkInterface(name = " << networkInterface.name()
                    << ", hardware address = " << networkInterface.hardwareAddress()
                    << ", flags = ";
    flagsDebug(debug, networkInterface.flags());
#if defined(Q_CC_RVCT)
    // RVCT gets confused with << networkInterface.addressEntries(), reason unknown.
    debug.nospace() << ")\n";
#else
    debug.nospace() << ", entries = " << networkInterface.addressEntries()
                    << ")\n";
#endif
    return debug.space();
}
#endif

QT_END_NAMESPACE

#endif // QT_NO_NETWORKINTERFACE