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/****************************************************************************
**
** 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 "qset.h"
#include "qnetworkinterface.h"
#include "qnetworkinterface_p.h"
#include "qalgorithms.h"
#include "private/qnet_unix_p.h"
#ifndef QT_NO_NETWORKINTERFACE
#define IP_MULTICAST // make AIX happy and define IFF_MULTICAST
#include <sys/types.h>
#include <sys/socket.h>
#ifdef Q_OS_SOLARIS
# include <sys/sockio.h>
#endif
#include <net/if.h>
#ifndef QT_NO_GETIFADDRS
# include <ifaddrs.h>
#endif
#ifdef QT_LINUXBASE
# include <arpa/inet.h>
# ifndef SIOCGIFBRDADDR
# define SIOCGIFBRDADDR 0x8919
# endif
#endif // QT_LINUXBASE
#include <qplatformdefs.h>
QT_BEGIN_NAMESPACE
static QHostAddress addressFromSockaddr(sockaddr *sa)
{
QHostAddress address;
if (!sa)
return address;
if (sa->sa_family == AF_INET)
address.setAddress(htonl(((sockaddr_in *)sa)->sin_addr.s_addr));
#ifndef QT_NO_IPV6
else if (sa->sa_family == AF_INET6)
address.setAddress(((sockaddr_in6 *)sa)->sin6_addr.s6_addr);
#endif
return address;
}
static QNetworkInterface::InterfaceFlags convertFlags(uint rawFlags)
{
QNetworkInterface::InterfaceFlags flags = 0;
flags |= (rawFlags & IFF_UP) ? QNetworkInterface::IsUp : QNetworkInterface::InterfaceFlag(0);
flags |= (rawFlags & IFF_RUNNING) ? QNetworkInterface::IsRunning : QNetworkInterface::InterfaceFlag(0);
flags |= (rawFlags & IFF_BROADCAST) ? QNetworkInterface::CanBroadcast : QNetworkInterface::InterfaceFlag(0);
flags |= (rawFlags & IFF_LOOPBACK) ? QNetworkInterface::IsLoopBack : QNetworkInterface::InterfaceFlag(0);
#ifdef IFF_POINTOPOINT //cygwin doesn't define IFF_POINTOPOINT
flags |= (rawFlags & IFF_POINTOPOINT) ? QNetworkInterface::IsPointToPoint : QNetworkInterface::InterfaceFlag(0);
#endif
#ifdef IFF_MULTICAST
flags |= (rawFlags & IFF_MULTICAST) ? QNetworkInterface::CanMulticast : QNetworkInterface::InterfaceFlag(0);
#endif
return flags;
}
#ifdef QT_NO_GETIFADDRS
// getifaddrs not available
static const int STORAGEBUFFER_GROWTH = 256;
static QSet<QByteArray> interfaceNames(int socket)
{
QSet<QByteArray> result;
#ifdef QT_NO_IPV6IFNAME
QByteArray storageBuffer;
struct ifconf interfaceList;
forever {
// grow the storage buffer
storageBuffer.resize(storageBuffer.size() + STORAGEBUFFER_GROWTH);
interfaceList.ifc_buf = storageBuffer.data();
interfaceList.ifc_len = storageBuffer.size();
// get the interface list
if (qt_safe_ioctl(socket, SIOCGIFCONF, &interfaceList) >= 0) {
if (int(interfaceList.ifc_len + sizeof(ifreq) + 64) < storageBuffer.size()) {
// if the buffer was big enough, break
storageBuffer.resize(interfaceList.ifc_len);
break;
}
} else {
// internal error
return result;
}
if (storageBuffer.size() > 100000) {
// out of space
return result;
}
}
int interfaceCount = interfaceList.ifc_len / sizeof(ifreq);
for (int i = 0; i < interfaceCount; ++i) {
QByteArray name = QByteArray(interfaceList.ifc_req[i].ifr_name);
if (!name.isEmpty())
result << name;
}
return result;
#else
Q_UNUSED(socket);
// use if_nameindex
struct if_nameindex *interfaceList = ::if_nameindex();
for (struct if_nameindex *ptr = interfaceList; ptr && ptr->if_name; ++ptr)
result << ptr->if_name;
if_freenameindex(interfaceList);
return result;
#endif
}
static QNetworkInterfacePrivate *findInterface(int socket, QList<QNetworkInterfacePrivate *> &interfaces,
struct ifreq &req)
{
QNetworkInterfacePrivate *iface = 0;
int ifindex = 0;
#ifndef QT_NO_IPV6IFNAME
// Get the interface index
ifindex = if_nametoindex(req.ifr_name);
// find the interface data
QList<QNetworkInterfacePrivate *>::Iterator if_it = interfaces.begin();
for ( ; if_it != interfaces.end(); ++if_it)
if ((*if_it)->index == ifindex) {
// existing interface
iface = *if_it;
break;
}
#else
// Search by name
QList<QNetworkInterfacePrivate *>::Iterator if_it = interfaces.begin();
for ( ; if_it != interfaces.end(); ++if_it)
if ((*if_it)->name == QLatin1String(req.ifr_name)) {
// existing interface
iface = *if_it;
break;
}
#endif
if (!iface) {
// new interface, create data:
iface = new QNetworkInterfacePrivate;
iface->index = ifindex;
interfaces << iface;
#ifdef SIOCGIFNAME
// Get the canonical name
QByteArray oldName = req.ifr_name;
if (qt_safe_ioctl(socket, SIOCGIFNAME, &req) >= 0) {
iface->name = QString::fromLatin1(req.ifr_name);
// reset the name:
memcpy(req.ifr_name, oldName, qMin<int>(oldName.length() + 1, sizeof(req.ifr_name) - 1));
} else
#endif
{
// use this name anyways
iface->name = QString::fromLatin1(req.ifr_name);
}
// Get interface flags
if (qt_safe_ioctl(socket, SIOCGIFFLAGS, &req) >= 0) {
iface->flags = convertFlags(req.ifr_flags);
}
#ifdef SIOCGIFHWADDR
// Get the HW address
if (qt_safe_ioctl(socket, SIOCGIFHWADDR, &req) >= 0) {
uchar *addr = (uchar *)&req.ifr_addr;
iface->hardwareAddress = iface->makeHwAddress(6, addr);
}
#endif
}
return iface;
}
static QList<QNetworkInterfacePrivate *> interfaceListing()
{
QList<QNetworkInterfacePrivate *> interfaces;
int socket;
if ((socket = qt_safe_socket(AF_INET, SOCK_STREAM, IPPROTO_IP)) == -1)
return interfaces; // error
QSet<QByteArray> names = interfaceNames(socket);
QSet<QByteArray>::ConstIterator it = names.constBegin();
for ( ; it != names.constEnd(); ++it) {
ifreq req;
memset(&req, 0, sizeof(ifreq));
memcpy(req.ifr_name, *it, qMin<int>(it->length() + 1, sizeof(req.ifr_name) - 1));
QNetworkInterfacePrivate *iface = findInterface(socket, interfaces, req);
// Get the interface broadcast address
QNetworkAddressEntry entry;
if (iface->flags & QNetworkInterface::CanBroadcast) {
if (qt_safe_ioctl(socket, SIOCGIFBRDADDR, &req) >= 0) {
sockaddr *sa = &req.ifr_addr;
if (sa->sa_family == AF_INET)
entry.setBroadcast(addressFromSockaddr(sa));
}
}
// Get the interface netmask
if (qt_safe_ioctl(socket, SIOCGIFNETMASK, &req) >= 0) {
sockaddr *sa = &req.ifr_addr;
entry.setNetmask(addressFromSockaddr(sa));
}
// Get the address of the interface
if (qt_safe_ioctl(socket, SIOCGIFADDR, &req) >= 0) {
sockaddr *sa = &req.ifr_addr;
entry.setIp(addressFromSockaddr(sa));
}
iface->addressEntries << entry;
}
::close(socket);
return interfaces;
}
#else
// use getifaddrs
// platform-specific defs:
# ifdef Q_OS_LINUX
QT_BEGIN_INCLUDE_NAMESPACE
# include <features.h>
QT_END_INCLUDE_NAMESPACE
# endif
# if defined(Q_OS_LINUX) && __GLIBC__ - 0 >= 2 && __GLIBC_MINOR__ - 0 >= 1
# include <netpacket/packet.h>
static QList<QNetworkInterfacePrivate *> createInterfaces(ifaddrs *rawList)
{
QList<QNetworkInterfacePrivate *> interfaces;
for (ifaddrs *ptr = rawList; ptr; ptr = ptr->ifa_next) {
if ( !ptr->ifa_addr )
continue;
// Get the interface index
int ifindex = if_nametoindex(ptr->ifa_name);
// on Linux we use AF_PACKET and sockaddr_ll to obtain hHwAddress
QList<QNetworkInterfacePrivate *>::Iterator if_it = interfaces.begin();
for ( ; if_it != interfaces.end(); ++if_it)
if ((*if_it)->index == ifindex) {
// this one has been added already
if ( ptr->ifa_addr->sa_family == AF_PACKET
&& (*if_it)->hardwareAddress.isEmpty()) {
sockaddr_ll *sll = (sockaddr_ll *)ptr->ifa_addr;
(*if_it)->hardwareAddress = (*if_it)->makeHwAddress(sll->sll_halen, (uchar*)sll->sll_addr);
}
break;
}
if ( if_it != interfaces.end() )
continue;
QNetworkInterfacePrivate *iface = new QNetworkInterfacePrivate;
interfaces << iface;
iface->index = ifindex;
iface->name = QString::fromLatin1(ptr->ifa_name);
iface->flags = convertFlags(ptr->ifa_flags);
if ( ptr->ifa_addr->sa_family == AF_PACKET ) {
sockaddr_ll *sll = (sockaddr_ll *)ptr->ifa_addr;
iface->hardwareAddress = iface->makeHwAddress(sll->sll_halen, (uchar*)sll->sll_addr);
}
}
return interfaces;
}
# elif defined(Q_OS_BSD4)
QT_BEGIN_INCLUDE_NAMESPACE
# include <net/if_dl.h>
QT_END_INCLUDE_NAMESPACE
static QList<QNetworkInterfacePrivate *> createInterfaces(ifaddrs *rawList)
{
QList<QNetworkInterfacePrivate *> interfaces;
// on NetBSD we use AF_LINK and sockaddr_dl
// scan the list for that family
for (ifaddrs *ptr = rawList; ptr; ptr = ptr->ifa_next)
if (ptr->ifa_addr && ptr->ifa_addr->sa_family == AF_LINK) {
QNetworkInterfacePrivate *iface = new QNetworkInterfacePrivate;
interfaces << iface;
sockaddr_dl *sdl = (sockaddr_dl *)ptr->ifa_addr;
iface->index = sdl->sdl_index;
iface->name = QString::fromLatin1(ptr->ifa_name);
iface->flags = convertFlags(ptr->ifa_flags);
iface->hardwareAddress = iface->makeHwAddress(sdl->sdl_alen, (uchar*)LLADDR(sdl));
}
return interfaces;
}
# else // Generic version
static QList<QNetworkInterfacePrivate *> createInterfaces(ifaddrs *rawList)
{
QList<QNetworkInterfacePrivate *> interfaces;
// make sure there's one entry for each interface
for (ifaddrs *ptr = rawList; ptr; ptr = ptr->ifa_next) {
// Get the interface index
int ifindex = if_nametoindex(ptr->ifa_name);
QList<QNetworkInterfacePrivate *>::Iterator if_it = interfaces.begin();
for ( ; if_it != interfaces.end(); ++if_it)
if ((*if_it)->index == ifindex)
// this one has been added already
break;
if (if_it == interfaces.end()) {
// none found, create
QNetworkInterfacePrivate *iface = new QNetworkInterfacePrivate;
interfaces << iface;
iface->index = ifindex;
iface->name = QString::fromLatin1(ptr->ifa_name);
iface->flags = convertFlags(ptr->ifa_flags);
}
}
return interfaces;
}
# endif
static QList<QNetworkInterfacePrivate *> interfaceListing()
{
QList<QNetworkInterfacePrivate *> interfaces;
int socket;
if ((socket = qt_safe_socket(AF_INET, SOCK_STREAM, IPPROTO_IP)) == -1)
return interfaces; // error
ifaddrs *interfaceListing;
if (getifaddrs(&interfaceListing) == -1) {
// error
::close(socket);
return interfaces;
}
interfaces = createInterfaces(interfaceListing);
for (ifaddrs *ptr = interfaceListing; ptr; ptr = ptr->ifa_next) {
// Get the interface index
int ifindex = if_nametoindex(ptr->ifa_name);
QNetworkInterfacePrivate *iface = 0;
QList<QNetworkInterfacePrivate *>::Iterator if_it = interfaces.begin();
for ( ; if_it != interfaces.end(); ++if_it)
if ((*if_it)->index == ifindex) {
// found this interface already
iface = *if_it;
break;
}
if (!iface) {
// skip all non-IP interfaces
continue;
}
QNetworkAddressEntry entry;
entry.setIp(addressFromSockaddr(ptr->ifa_addr));
if (entry.ip().isNull())
// could not parse the address
continue;
entry.setNetmask(addressFromSockaddr(ptr->ifa_netmask));
if (iface->flags & QNetworkInterface::CanBroadcast)
entry.setBroadcast(addressFromSockaddr(ptr->ifa_broadaddr));
iface->addressEntries << entry;
}
freeifaddrs(interfaceListing);
::close(socket);
return interfaces;
}
#endif
QList<QNetworkInterfacePrivate *> QNetworkInterfaceManager::scan()
{
return interfaceListing();
}
QT_END_NAMESPACE
#endif // QT_NO_NETWORKINTERFACE
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