How To Get System Network Interface List in using qt4.5

[rakesh]

hai,
i am new to qt and linux..my problem..in my project we display list network interface using qt4.5 version in ferdora 8.i am using platform is c++..i am see Qnetworkinterface but i am code some ....but it gives some errors...pls help me any one....i am send code..this wrong give right way...once again help me...
thanks in adavance....
Q_GLOBAL_STATIC(QNetworkInterfaceManager, manager)

QNetworkInterfaceManager::QNetworkInterfaceManager ()
{
}

QNetworkInterfaceManager::~QNetworkInterfaceManage r()
{
}

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=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_Lin) && 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)
{
}

/*!
Constructs a QNetworkAddressEntry object that is a copy of the
object \a other.
*/
QNetworkAddressEntry::QNetworkAddressEntry(const QNetworkAddressEntry &other)
: d(new QNetworkAddressEntryPrivate(*other.d))
{
}



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

/*!
Frees the resources associated with the QNetworkInterface object.
*/
QNetworkInterface::~QNetworkInterface()
{
}

/*!
Creates a copy of the the QNetworkInterface object contained in \a
other.
*/
QNetworkInterface::QNetworkInterface(const QNetworkInterface &other)
: d(other.d)
{
}

/*!
Copies the contents of the QNetworkInterface object contained in \a
other into this one.
*/
QNetworkInterface &QNetworkInterface:perator=(const QNetworkInterface &other)
{
d = other.d;
return *this;
}

/*!
Returns true if this QNetworkInterface object contains valid
information about a network interface.
*/
bool QNetworkInterface::isValid() const
{
return !name().isEmpty();
}

/*!
Returns the name of this network interface. On Unix systems, this
is a string containing the type of the interface and optionally a
sequence number, such as "eth0", "lo" or "pcn0". On Windows, it's
an internal ID that cannot be changed by the user.
*/
QString QNetworkInterface::name() const
{
return d ? d->name : QString();
}

/*!
Returns the flags associated with this network interface.
*/
QNetworkInterface::InterfaceFlags QNetworkInterface::flags() const
{
return d ? d->flags : InterfaceFlags(0);
}

/*!
Returns the low-level hardware address for this interface. On
Ethernet interfaces, this will be a MAC address in string
representation, separated by colons.

Other interface types may have other types of hardware
addresses. Implementations should not depend on this function
returning a valid MAC address.
*/
QString QNetworkInterface::hardwareAddress() const
{
return d ? d->hardwareAddress : QString();
}

/*!
Returns the list of IP addresses that this interface possesses
along with their associated netmasks and broadcast addresses.

If the netmask or broadcast address information is not necessary,
you can call the addresses() function to obtain just the IP
addresses.
*/
QList<QNetworkAddressEntry> QNetworkInterface::addressEntries() const
{
return d ? d->addressEntries : QList<QNetworkAddressEntry>();
}

/*!
Returns a QNetworkInterface object for the interface named \a
name. If no such interface exists, this function returns an
invalid QNetworkInterface object.

\sa name(), isValid()
*/
QNetworkInterface QNetworkInterface::interfaceFromName(const QString &name)
{
QNetworkInterface result;
result.d = manager()->interfaceFromName(name);
return result;
}

/*!
Returns a QNetworkInterface object for the interface whose internal
ID is \a index. Network interfaces have a unique identifier called
the "interface index" to distinguish it from other interfaces on
the system. Often, this value is assigned progressively and
interfaces being removed and then added again get a different
value every time.

This index is also found in the IPv6 address' scope ID field.
*/
QNetworkInterface QNetworkInterface::interfaceFromIndex(int index)
{
QNetworkInterface result;
result.d = manager()->interfaceFromIndex(index);
return result;
}

/*!
Returns a listing of all the network interfaces found on the host
machine.
*/
QList<QNetworkInterface> QNetworkInterface::allInterfaces()
{
QList<QSharedDataPointer<QNetworkInterfacePrivate> > privs = manager()->allInterfaces();
QList<QNetworkInterface> result;
foreach (QSharedDataPointer<QNetworkInterfacePrivate> p, privs) {
QNetworkInterface item;
item.d = p;
result << item;
}

return result;
}

/*!
This convenience function returns all IP addresses found on the
host machine. It is equivalent to calling addresses() in all the
objects returned by allInterfaces().
*/
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 &interface)
{
debug.nospace() << "QNetworkInterface(name = " << interface.name()
<< ", hardware address = " << interface.hardwareAddress()
<< ", flags = ";
flagsDebug(debug, interface.flags());
debug.nospace() << ", entries = " << interface.addressEntries()
<< ")\n";
return debug.space();
}
#endif

[faldzip]

just use QNetworkInterface::allInterfaces().
Example:

QList<QNetworkInterface> list = QNetworkInterface::allInterfaces(); // now you have interfaces list
foreach (QNetworkInterface iface, list)  // this should print all interfaces' names
{
	qDebug() << iface.name();
}

QList<QNetworkInterface> list = QNetworkInterface::allInterfaces(); // now you have interfaces list
foreach (QNetworkInterface iface, list)  // this should print all interfaces' names
{
	qDebug() << iface.name();
}

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Didn't test it, but it should be something like this.

P.S. Use CODE tags for pasting code.
P.S.2. It's better to see your code where you want to solve your problem than Qt source code. And you can read about almost every class and method in Qt Assistant, or on http://doc.trolltech.com

[aamer4yu]

PS3 ... Its better to submit long codes as attachments / zip files

[rakesh]

Thanks for ur replays...i can use that code, can do something like but it gives error..please very this and please correct way.....pls help me...
QList<QNetworkInterface> NetList = QNetworkInterface::allInterfaces();
int NetCount = 0;
int Neti = 0;
QString MacStr;
QNetworkInterface thisNet;
NetCount = NetList.count();
for(Neti = 0;Neti < NetCount; Neti++)
{
if(NetList[Neti].isValid())
{
thisNet = NetList[Neti];
break;
}
qDebug() << thisNet.name();
}

MacStr = thisNet.hardwareAddress();

[faldzip]

Use CODE tags in posts

And what error did you get?

[Lykurg]

...for me it works fine

[rakesh]

its working but the network interface not display in the form i can use this way...in if condition

ui.combobox->addItem(NetInter.Name)...
but it gives error in the ui is not declared in scope..
pls give any wrong this process

ui.combobox->addItem(NetInter.Name)...
but it gives error in the ui is not declared in scope..
pls give any wrong this process

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[rakesh]

how to display in combobox,how to work in combobox...

[rakesh]

hai,any one help me...for display items in combobox..i am connect combobox to class after how to display networkInterface list in combobox...for using slots pls help me ...any one..i saw slots using code , i can try but its not working...
void QIP::setInterface(int index)
{
qDebug()<<"Setting up new interface...\n";
networkInterface = networkList.at(index);
qDebug()<<"Network name: "<<networkInterface.name();
qDebug()<<"\t[+] Done...\n";
}
give error in 'at' is not declared in the scope...whats problem...pls help me..any one....

[Lykurg]

1. Use the *'*"?$§%-CODE tags
2. Reconsider your way of asking. Sorry but I don't understand your problem.

What's 'networkList'? What error do you get? Out of range? Have you included all necessary header...

[rakesh]

i am retrive network interfaces in combobox,but i am select etho network in combobox...it gives systems crash error..i am using qt4.5 version...what is problem...help me any one

[Lykurg]

Ok, you do something like that:

QComboBox *box = new QComboBox(this);
QList<QNetworkInterface> list = QNetworkInterface::allInterfaces(); 
foreach (QNetworkInterface iface, list)
{
    box->addItem(iface.name());
}

QComboBox *box = new QComboBox(this);
QList<QNetworkInterface> list = QNetworkInterface::allInterfaces(); 
foreach (QNetworkInterface iface, list)
{
    box->addItem(iface.name());
}

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And then? Which slot is connected to currentIndexChanged()? It's highly probably that the error occurs there. But without any code it's hardly to say. Maybee you could also send the debugger output...

[faldzip]

I think that your problem is simple: lack of basic knowlage of C++ and Qt GUI programming. My guess is that networkList was declared in other method so it no longer exist. What's more:
1. Use CODE tags :]
2. Try to change your way of posting and asking - typing many "please help me" instead of just one sentance describing errors you get is a bad idea - it's hard to help if we don't know much about your problem.
3. I think that you are not reading our answer carefully or you dont understand it (because of english) or something like that, because we ask you something and your reply isn't connected with what we say. (like CODE tags :P)
4. Summary: Read some C++ tutorial carefully and get trough some Qt Examples and demos for begginers.

Good luck!