/**************************************************************************** ** ** Copyright (C) 2010 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. ** ** $QT_BEGIN_LICENSE:LGPL$ ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the Technology Preview License Agreement accompanying ** this package. ** ** 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 ** 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. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** ** ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "qnetworkinterface.h" #include "qnetworkinterface_p.h" #include "qdebug.h" #include "qendian.h" #ifndef QT_NO_NETWORKINTERFACE QT_BEGIN_NAMESPACE static QList postProcess(QList 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::Iterator it = list.begin(); const QList::Iterator end = list.end(); for ( ; it != end; ++it) { QList::Iterator addr_it = (*it)->addressEntries.begin(); const QList::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 QNetworkInterfaceManager::interfaceFromName(const QString &name) { QList > interfaceList = allInterfaces(); QList >::ConstIterator it = interfaceList.constBegin(); for ( ; it != interfaceList.constEnd(); ++it) if ((*it)->name == name) return *it; return empty; } QSharedDataPointer QNetworkInterfaceManager::interfaceFromIndex(int index) { QList > interfaceList = allInterfaces(); QList >::ConstIterator it = interfaceList.constBegin(); for ( ; it != interfaceList.constEnd(); ++it) if ((*it)->index == index) return *it; return empty; } QList > QNetworkInterfaceManager::allInterfaces() { QList list = postProcess(scan()); QList > result; foreach (QNetworkInterfacePrivate *ptr, list) result << QSharedDataPointer(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 QNetworkInterface::addressEntries() const { return d ? d->addressEntries : QList(); } /*! 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::allInterfaces() { QList > privs = manager()->allInterfaces(); QList result; foreach (const QSharedDataPointer &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 QNetworkInterface::allAddresses() { QList > privs = manager()->allInterfaces(); QList result; foreach (const QSharedDataPointer &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