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// Copyright (C) 2016 The Qt Company Ltd.
// Copyright (C) 2016 Intel Corporation.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#define WIN32_LEAN_AND_MEAN 1
#include "qnetworkinterface.h"
#include "qnetworkinterface_p.h"
#ifndef QT_NO_NETWORKINTERFACE
#include <qhostinfo.h>
#include <qhash.h>
#include <qurl.h>
// Since we need to include winsock2.h, we need to define WIN32_LEAN_AND_MEAN
// (above) so windows.h won't include winsock.h.
// In addition, we need to include winsock2.h before iphlpapi.h and we need
// to include ws2ipdef.h to work around an MinGW-w64 bug
// (http://sourceforge.net/p/mingw-w64/mailman/message/32935366/)
#include <winsock2.h>
#include <ws2ipdef.h>
#include <wincrypt.h>
#include <iphlpapi.h>
#include <ws2tcpip.h>
#include <qt_windows.h>
// In case these aren't defined
#define IF_TYPE_IEEE80216_WMAN 237
#define IF_TYPE_IEEE802154 259
QT_BEGIN_NAMESPACE
static QHostAddress addressFromSockaddr(sockaddr *sa)
{
QHostAddress address;
if (!sa)
return address;
if (sa->sa_family == AF_INET) {
address.setAddress(htonl(reinterpret_cast<const sockaddr_in *>(sa)->sin_addr.s_addr));
} else if (sa->sa_family == AF_INET6) {
auto sai6 = reinterpret_cast<const sockaddr_in6 *>(sa);
address.setAddress(sai6->sin6_addr.s6_addr);
if (sai6->sin6_scope_id)
address.setScopeId(QNetworkInterfaceManager::interfaceNameFromIndex(sai6->sin6_scope_id));
} else {
qWarning("Got unknown socket family %d", sa->sa_family);
}
return address;
}
uint QNetworkInterfaceManager::interfaceIndexFromName(const QString &name)
{
NET_IFINDEX id;
NET_LUID luid;
if (ConvertInterfaceNameToLuidW(reinterpret_cast<const wchar_t *>(name.constData()), &luid) == NO_ERROR
&& ConvertInterfaceLuidToIndex(&luid, &id) == NO_ERROR)
return uint(id);
return 0;
}
QString QNetworkInterfaceManager::interfaceNameFromIndex(uint index)
{
NET_LUID luid;
if (ConvertInterfaceIndexToLuid(index, &luid) == NO_ERROR) {
WCHAR buf[IF_MAX_STRING_SIZE + 1];
if (ConvertInterfaceLuidToNameW(&luid, buf, sizeof(buf)/sizeof(buf[0])) == NO_ERROR)
return QString::fromWCharArray(buf);
}
return QString::number(index);
}
static QList<QNetworkInterfacePrivate *> interfaceListing()
{
QList<QNetworkInterfacePrivate *> interfaces;
IP_ADAPTER_ADDRESSES staticBuf[2]; // 2 is arbitrary
PIP_ADAPTER_ADDRESSES pAdapter = staticBuf;
ULONG bufSize = sizeof staticBuf;
ULONG flags = GAA_FLAG_INCLUDE_PREFIX |
GAA_FLAG_SKIP_DNS_SERVER |
GAA_FLAG_SKIP_MULTICAST;
ULONG retval = GetAdaptersAddresses(AF_UNSPEC, flags, NULL, pAdapter, &bufSize);
if (retval == ERROR_BUFFER_OVERFLOW) {
// need more memory
pAdapter = reinterpret_cast<IP_ADAPTER_ADDRESSES *>(malloc(bufSize));
if (!pAdapter)
return interfaces;
// try again
if (GetAdaptersAddresses(AF_UNSPEC, flags, NULL, pAdapter, &bufSize) != ERROR_SUCCESS) {
free(pAdapter);
return interfaces;
}
} else if (retval != ERROR_SUCCESS) {
// error
return interfaces;
}
// iterate over the list and add the entries to our listing
for (PIP_ADAPTER_ADDRESSES ptr = pAdapter; ptr; ptr = ptr->Next) {
// the structure grows over time, so let's make sure the fields
// introduced in Windows Vista are present (Luid is the furthest
// field we access from IP_ADAPTER_ADDRESSES_LH)
Q_ASSERT(ptr->Length >= offsetof(IP_ADAPTER_ADDRESSES, Luid));
Q_ASSERT(ptr->Length >= offsetof(IP_ADAPTER_ADDRESSES, Ipv6IfIndex));
QNetworkInterfacePrivate *iface = new QNetworkInterfacePrivate;
interfaces << iface;
iface->index = 0;
if (ptr->Ipv6IfIndex != 0)
iface->index = ptr->Ipv6IfIndex;
else if (ptr->IfIndex != 0)
iface->index = ptr->IfIndex;
iface->mtu = qMin<qint64>(ptr->Mtu, INT_MAX);
iface->flags = QNetworkInterface::CanBroadcast;
if (ptr->OperStatus == IfOperStatusUp)
iface->flags |= QNetworkInterface::IsUp | QNetworkInterface::IsRunning;
if ((ptr->Flags & IP_ADAPTER_NO_MULTICAST) == 0)
iface->flags |= QNetworkInterface::CanMulticast;
if (ptr->IfType == IF_TYPE_PPP)
iface->flags |= QNetworkInterface::IsPointToPoint;
switch (ptr->IfType) {
case IF_TYPE_ETHERNET_CSMACD:
iface->type = QNetworkInterface::Ethernet;
break;
case IF_TYPE_FDDI:
iface->type = QNetworkInterface::Fddi;
break;
case IF_TYPE_PPP:
iface->type = QNetworkInterface::Ppp;
break;
case IF_TYPE_SLIP:
iface->type = QNetworkInterface::Slip;
break;
case IF_TYPE_SOFTWARE_LOOPBACK:
iface->type = QNetworkInterface::Loopback;
iface->flags |= QNetworkInterface::IsLoopBack;
break;
case IF_TYPE_IEEE80211:
iface->type = QNetworkInterface::Ieee80211;
break;
case IF_TYPE_IEEE1394:
iface->type = QNetworkInterface::Ieee1394;
break;
case IF_TYPE_IEEE80216_WMAN:
iface->type = QNetworkInterface::Ieee80216;
break;
case IF_TYPE_IEEE802154:
iface->type = QNetworkInterface::Ieee802154;
break;
}
// use ConvertInterfaceLuidToNameW because that returns a friendlier name, though not
// as "friendly" as FriendlyName below
WCHAR buf[IF_MAX_STRING_SIZE + 1];
if (ConvertInterfaceLuidToNameW(&ptr->Luid, buf, sizeof(buf)/sizeof(buf[0])) == NO_ERROR)
iface->name = QString::fromWCharArray(buf);
if (iface->name.isEmpty())
iface->name = QString::fromLocal8Bit(ptr->AdapterName);
iface->friendlyName = QString::fromWCharArray(ptr->FriendlyName);
if (ptr->PhysicalAddressLength)
iface->hardwareAddress = iface->makeHwAddress(ptr->PhysicalAddressLength,
ptr->PhysicalAddress);
// parse the IP (unicast) addresses
for (PIP_ADAPTER_UNICAST_ADDRESS addr = ptr->FirstUnicastAddress; addr; addr = addr->Next) {
Q_ASSERT(addr->Length >= offsetof(IP_ADAPTER_UNICAST_ADDRESS, OnLinkPrefixLength));
// skip addresses in invalid state
if (addr->DadState == IpDadStateInvalid)
continue;
QNetworkAddressEntry entry;
entry.setIp(addressFromSockaddr(addr->Address.lpSockaddr));
entry.setPrefixLength(addr->OnLinkPrefixLength);
auto toDeadline = [](ULONG lifetime) -> QDeadlineTimer {
if (lifetime == 0xffffffffUL)
return QDeadlineTimer::Forever;
return QDeadlineTimer(lifetime * 1000);
};
entry.setAddressLifetime(toDeadline(addr->ValidLifetime), toDeadline(addr->PreferredLifetime));
entry.setDnsEligibility(addr->Flags & IP_ADAPTER_ADDRESS_DNS_ELIGIBLE ?
QNetworkAddressEntry::DnsEligible :
QNetworkAddressEntry::DnsIneligible);
iface->addressEntries << entry;
}
}
if (pAdapter != staticBuf)
free(pAdapter);
return interfaces;
}
QList<QNetworkInterfacePrivate *> QNetworkInterfaceManager::scan()
{
return interfaceListing();
}
QString QHostInfo::localDomainName()
{
FIXED_INFO info, *pinfo;
ULONG bufSize = sizeof info;
pinfo = &info;
if (GetNetworkParams(pinfo, &bufSize) == ERROR_BUFFER_OVERFLOW) {
pinfo = reinterpret_cast<FIXED_INFO *>(malloc(bufSize));
if (!pinfo)
return QString();
// try again
if (GetNetworkParams(pinfo, &bufSize) != ERROR_SUCCESS) {
free(pinfo);
return QString(); // error
}
}
QString domainName = QUrl::fromAce(pinfo->DomainName);
if (pinfo != &info)
free(pinfo);
return domainName;
}
QT_END_NAMESPACE
#endif // QT_NO_NETWORKINTERFACE
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