Mac-4.7.4/src/network/kernel/qnetworkinterface.cpp - platform/external/qt - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** This file is part of the QtNetwork module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** GNU Lesser General Public License Usage
 ** 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 will be met:
 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
 ** In addition, as a special exception, Nokia gives you certain additional
 ** rights. These rights are described in the Nokia Qt LGPL Exception
 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU General
 ** Public License version 3.0 as published by the Free Software Foundation
 ** and appearing in the file LICENSE.GPL included in the packaging of this
 ** file. Please review the following information to ensure the GNU General
 ** Public License version 3.0 requirements will be met:
 ** http://www.gnu.org/copyleft/gpl.html.
 **
 ** Other Usage
 ** Alternatively, this file may be used in accordance with the terms and
 ** conditions contained in a signed written agreement between you and Nokia.
 **
 **
 **
 **
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #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
     \reentrant
     \ingroup network

     Each network interface can contain zero or more IP addresses, which
     in turn can be associated with a netmask and/or a broadcast
     address (depending on support from the operating system).

     This class represents one such group.
 */

 /*!
     Constructs an empty QNetworkAddressEntry object.
 */
 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.data()))
 {
 }

 /*!
     Makes a copy of the QNetworkAddressEntry object \a other.
 */
 QNetworkAddressEntry &QNetworkAddressEntry::operator=(const QNetworkAddressEntry &other)
 {
     *d.data() = *other.d.data();
     return *this;
 }

 /*!
     Destroys this QNetworkAddressEntry object.
 */
 QNetworkAddressEntry::~QNetworkAddressEntry()
 {
 }

 /*!
     Returns true if this network address entry is the same as \a
     other.
 */
 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;
 }

 /*!
     \fn bool QNetworkAddressEntry::operator!=(const QNetworkAddressEntry &other) const

     Returns true if this network address entry is different from \a
     other.
 */

 /*!
     This function returns one IPv4 or IPv6 address found, that was
     found in a network interface.
 */
 QHostAddress QNetworkAddressEntry::ip() const
 {
     return d->address;
 }

 /*!
     Sets the IP address the QNetworkAddressEntry object contains to \a
     newIp.
 */
 void QNetworkAddressEntry::setIp(const QHostAddress &newIp)
 {
     d->address = newIp;
 }

 /*!
     Returns the netmask associated with the IP address. The
     netmask is expressed in the form of an IP address, such as
     255.255.0.0.

     For IPv6 addresses, the prefix length is converted to an address
     where the number of bits set to 1 is equal to the prefix
     length. For a prefix length of 64 bits (the most common value),
     the netmask will be expressed as a QHostAddress holding the
     address FFFF:FFFF:FFFF:FFFF::

     \sa prefixLength()
 */
 QHostAddress QNetworkAddressEntry::netmask() const
 {
     return d->netmask;
 }

 /*!
     Sets the netmask that this QNetworkAddressEntry object contains to
     \a newNetmask. Setting the netmask also sets the prefix length to
     match the new netmask.

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

     d->netmask.setAddress(newNetmask);
 }

 /*!
     \since 4.5
     Returns the prefix length of this IP address. The prefix length
     matches the number of bits set to 1 in the netmask (see
     netmask()). For IPv4 addresses, the value is between 0 and 32. For
     IPv6 addresses, it's contained between 0 and 128 and is the
     preferred form of representing addresses.

     This function returns -1 if the prefix length could not be
     determined (i.e., netmask() returns a null QHostAddress()).

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

 /*!
     \since 4.5
     Sets the prefix length of this IP address to \a length. The value
     of \a length must be valid for this type of IP address: between 0
     and 32 for IPv4 addresses, between 0 and 128 for IPv6
     addresses. Setting to any invalid value is equivalent to setting
     to -1, which means "no prefix length".

     Setting the prefix length also sets the netmask (see netmask()).

     \sa setNetmask()
 */
 void QNetworkAddressEntry::setPrefixLength(int length)
 {
     d->netmask.setPrefixLength(d->address.protocol(), length);
 }

 /*!
     Returns the broadcast address associated with the IPv4
     address and netmask. It can usually be derived from those two by
     setting to 1 the bits of the IP address where the netmask contains
     a 0. (In other words, by bitwise-OR'ing the IP address with the
     inverse of the netmask)

     This member is always empty for IPv6 addresses, since the concept
     of broadcast has been abandoned in that system in favor of
     multicast. In particular, the group of hosts corresponding to all
     the nodes in the local network can be reached by the "all-nodes"
     special multicast group (address FF02::1).
 */
 QHostAddress QNetworkAddressEntry::broadcast() const
 {
     return d->broadcast;
 }

 /*!
     Sets the broadcast IP address of this QNetworkAddressEntry object
     to \a newBroadcast.
 */
 void QNetworkAddressEntry::setBroadcast(const QHostAddress &newBroadcast)
 {
     d->broadcast = newBroadcast;
 }

 /*!
     \class QNetworkInterface
     \brief The QNetworkInterface class provides a listing of the host's IP
     addresses and network interfaces.

     \since 4.2
     \reentrant
     \ingroup network

     QNetworkInterface represents one network interface attached to the
     host where the program is being run. Each network interface may
     contain zero or more IP addresses, each of which is optionally
     associated with a netmask and/or a broadcast address. The list of
     such trios can be obtained with addressEntries(). Alternatively,
     when the netmask or the broadcast addresses aren't necessary, use
     the allAddresses() convenience function to obtain just the IP
     addresses.

     QNetworkInterface also reports the interface's hardware address with
     hardwareAddress().

     Not all operating systems support reporting all features. Only the
     IPv4 addresses are guaranteed to be listed by this class in all
     platforms. In particular, IPv6 address listing is only supported
     on Windows XP and more recent versions, Linux, MacOS X and the
     BSDs.

     \sa QNetworkAddressEntry
 */

 /*!
     \enum QNetworkInterface::InterfaceFlag
     Specifies the flags associated with this network interface. The
     possible values are:

     \value IsUp                 the network interface is active
     \value IsRunning            the network interface has resources
                                 allocated
     \value CanBroadcast         the network interface works in
                                 broadcast mode
     \value IsLoopBack           the network interface is a loopback
                                 interface: that is, it's a virtual
                                 interface whose destination is the
                                 host computer itself
     \value IsPointToPoint       the network interface is a
                                 point-to-point interface: that is,
                                 there is one, single other address
                                 that can be directly reached by it.
     \value CanMulticast         the network interface supports
                                 multicasting

     Note that one network interface cannot be both broadcast-based and
     point-to-point.
 */

 /*!
     Constructs an empty network interface object.
 */
 QNetworkInterface::QNetworkInterface()
     : d(0)
 {
 }

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

 /*!
     Creates a copy of 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::operator=(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();
 }

 /*!
     \since 4.5
     Returns the interface system index, if known. This is an integer
     assigned by the operating system to identify this interface and it
     generally doesn't change. It matches the scope ID field in IPv6
     addresses.

     If the index isn't known, this function returns 0.
 */
 int QNetworkInterface::index() const
 {
     return d ? d->index : 0;
 }

 /*!
     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();
 }

 /*!
     \since 4.5

     Returns the human-readable name of this network interface on
     Windows, such as "Local Area Connection", if the name could be
     determined. If it couldn't, this function returns the same as
     name(). The human-readable name is a name that the user can modify
     in the Windows Control Panel, so it may change during the
     execution of the program.

     On Unix, this function currently always returns the same as
     name(), since Unix systems don't store a configuration for
     human-readable names.
 */
 QString QNetworkInterface::humanReadableName() const
 {
     return d ? !d->friendlyName.isEmpty() ? d->friendlyName : 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 allAddresses() 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 (const 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 addressEntries() on all the
     objects returned by allInterfaces() to obtain lists of QHostAddress
     objects then calling QHostAddress::ip() on each of these.
 */
 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
	/****************************************************************************
	**
	** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
	** All rights reserved.
	** Contact: Nokia Corporation (qt-info@nokia.com)
	**
	** This file is part of the QtNetwork module of the Qt Toolkit.
	**
	** $QT_BEGIN_LICENSE:LGPL$
	** GNU Lesser General Public License Usage
	** 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 will be met:
	** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
	**
	** In addition, as a special exception, Nokia gives you certain additional
	** rights. These rights are described in the Nokia Qt LGPL Exception
	** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
	**
	** GNU General Public License Usage
	** Alternatively, this file may be used under the terms of the GNU General
	** Public License version 3.0 as published by the Free Software Foundation
	** and appearing in the file LICENSE.GPL included in the packaging of this
	** file. Please review the following information to ensure the GNU General
	** Public License version 3.0 requirements will be met:
	** http://www.gnu.org/copyleft/gpl.html.
	**
	** Other Usage
	** Alternatively, this file may be used in accordance with the terms and
	** conditions contained in a signed written agreement between you and Nokia.
	**
	**
	**
	**
	**
	** $QT_END_LICENSE$
	**
	****************************************************************************/

	#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
	\reentrant
	\ingroup network

	Each network interface can contain zero or more IP addresses, which
	in turn can be associated with a netmask and/or a broadcast
	address (depending on support from the operating system).

	This class represents one such group.
	*/

	/*!
	Constructs an empty QNetworkAddressEntry object.
	*/
	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.data()))
	{
	}

	/*!
	Makes a copy of the QNetworkAddressEntry object \a other.
	*/
	QNetworkAddressEntry &QNetworkAddressEntry::operator=(const QNetworkAddressEntry &other)
	{
	d.data() = other.d.data();
	return *this;
	}

	/*!
	Destroys this QNetworkAddressEntry object.
	*/
	QNetworkAddressEntry::~QNetworkAddressEntry()
	{
	}

	/*!
	Returns true if this network address entry is the same as \a
	other.
	*/
	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;
	}

	/*!
	\fn bool QNetworkAddressEntry::operator!=(const QNetworkAddressEntry &other) const

	Returns true if this network address entry is different from \a
	other.
	*/

	/*!
	This function returns one IPv4 or IPv6 address found, that was
	found in a network interface.
	*/
	QHostAddress QNetworkAddressEntry::ip() const
	{
	return d->address;
	}

	/*!
	Sets the IP address the QNetworkAddressEntry object contains to \a
	newIp.
	*/
	void QNetworkAddressEntry::setIp(const QHostAddress &newIp)
	{
	d->address = newIp;
	}

	/*!
	Returns the netmask associated with the IP address. The
	netmask is expressed in the form of an IP address, such as
	255.255.0.0.

	For IPv6 addresses, the prefix length is converted to an address
	where the number of bits set to 1 is equal to the prefix
	length. For a prefix length of 64 bits (the most common value),
	the netmask will be expressed as a QHostAddress holding the
	address FFFF:FFFF:FFFF:FFFF::

	\sa prefixLength()
	*/
	QHostAddress QNetworkAddressEntry::netmask() const
	{
	return d->netmask;
	}

	/*!
	Sets the netmask that this QNetworkAddressEntry object contains to
	\a newNetmask. Setting the netmask also sets the prefix length to
	match the new netmask.

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

	d->netmask.setAddress(newNetmask);
	}

	/*!
	\since 4.5
	Returns the prefix length of this IP address. The prefix length
	matches the number of bits set to 1 in the netmask (see
	netmask()). For IPv4 addresses, the value is between 0 and 32. For
	IPv6 addresses, it's contained between 0 and 128 and is the
	preferred form of representing addresses.

	This function returns -1 if the prefix length could not be
	determined (i.e., netmask() returns a null QHostAddress()).

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

	/*!
	\since 4.5
	Sets the prefix length of this IP address to \a length. The value
	of \a length must be valid for this type of IP address: between 0
	and 32 for IPv4 addresses, between 0 and 128 for IPv6
	addresses. Setting to any invalid value is equivalent to setting
	to -1, which means "no prefix length".

	Setting the prefix length also sets the netmask (see netmask()).

	\sa setNetmask()
	*/
	void QNetworkAddressEntry::setPrefixLength(int length)
	{
	d->netmask.setPrefixLength(d->address.protocol(), length);
	}

	/*!
	Returns the broadcast address associated with the IPv4
	address and netmask. It can usually be derived from those two by
	setting to 1 the bits of the IP address where the netmask contains
	a 0. (In other words, by bitwise-OR'ing the IP address with the
	inverse of the netmask)

	This member is always empty for IPv6 addresses, since the concept
	of broadcast has been abandoned in that system in favor of
	multicast. In particular, the group of hosts corresponding to all
	the nodes in the local network can be reached by the "all-nodes"
	special multicast group (address FF02::1).
	*/
	QHostAddress QNetworkAddressEntry::broadcast() const
	{
	return d->broadcast;
	}

	/*!
	Sets the broadcast IP address of this QNetworkAddressEntry object
	to \a newBroadcast.
	*/
	void QNetworkAddressEntry::setBroadcast(const QHostAddress &newBroadcast)
	{
	d->broadcast = newBroadcast;
	}

	/*!
	\class QNetworkInterface
	\brief The QNetworkInterface class provides a listing of the host's IP
	addresses and network interfaces.

	\since 4.2
	\reentrant
	\ingroup network

	QNetworkInterface represents one network interface attached to the
	host where the program is being run. Each network interface may
	contain zero or more IP addresses, each of which is optionally
	associated with a netmask and/or a broadcast address. The list of
	such trios can be obtained with addressEntries(). Alternatively,
	when the netmask or the broadcast addresses aren't necessary, use
	the allAddresses() convenience function to obtain just the IP
	addresses.

	QNetworkInterface also reports the interface's hardware address with
	hardwareAddress().

	Not all operating systems support reporting all features. Only the
	IPv4 addresses are guaranteed to be listed by this class in all
	platforms. In particular, IPv6 address listing is only supported
	on Windows XP and more recent versions, Linux, MacOS X and the
	BSDs.

	\sa QNetworkAddressEntry
	*/

	/*!
	\enum QNetworkInterface::InterfaceFlag
	Specifies the flags associated with this network interface. The
	possible values are:

	\value IsUp the network interface is active
	\value IsRunning the network interface has resources
	allocated
	\value CanBroadcast the network interface works in
	broadcast mode
	\value IsLoopBack the network interface is a loopback
	interface: that is, it's a virtual
	interface whose destination is the
	host computer itself
	\value IsPointToPoint the network interface is a
	point-to-point interface: that is,
	there is one, single other address
	that can be directly reached by it.
	\value CanMulticast the network interface supports
	multicasting

	Note that one network interface cannot be both broadcast-based and
	point-to-point.
	*/

	/*!
	Constructs an empty network interface object.
	*/
	QNetworkInterface::QNetworkInterface()
	: d(0)
	{
	}

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

	/*!
	Creates a copy of 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::operator=(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();
	}

	/*!
	\since 4.5
	Returns the interface system index, if known. This is an integer
	assigned by the operating system to identify this interface and it
	generally doesn't change. It matches the scope ID field in IPv6
	addresses.

	If the index isn't known, this function returns 0.
	*/
	int QNetworkInterface::index() const
	{
	return d ? d->index : 0;
	}

	/*!
	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();
	}

	/*!
	\since 4.5

	Returns the human-readable name of this network interface on
	Windows, such as "Local Area Connection", if the name could be
	determined. If it couldn't, this function returns the same as
	name(). The human-readable name is a name that the user can modify
	in the Windows Control Panel, so it may change during the
	execution of the program.

	On Unix, this function currently always returns the same as
	name(), since Unix systems don't store a configuration for
	human-readable names.
	*/
	QString QNetworkInterface::humanReadableName() const
	{
	return d ? !d->friendlyName.isEmpty() ? d->friendlyName : 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 allAddresses() 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 (const 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 addressEntries() on all the
	objects returned by allInterfaces() to obtain lists of QHostAddress
	objects then calling QHostAddress::ip() on each of these.
	*/
	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