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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtNetwork module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#include "qdnslookup_p.h"
#include <qfunctions_winrt.h>
#include <qurl.h>
#include <qdebug.h>
#include <wrl.h>
#include <windows.foundation.h>
#include <windows.foundation.collections.h>
#include <windows.networking.h>
#include <windows.networking.sockets.h>
using namespace Microsoft::WRL;
using namespace Microsoft::WRL::Wrappers;
using namespace ABI::Windows::Foundation;
using namespace ABI::Windows::Foundation::Collections;
using namespace ABI::Windows::Networking;
using namespace ABI::Windows::Networking::Connectivity;
using namespace ABI::Windows::Networking::Sockets;
#define E_NO_SUCH_HOST 0x80072af9
QT_BEGIN_NAMESPACE
void QDnsLookupRunnable::query(const int requestType, const QByteArray &requestName, const QHostAddress &nameserver, QDnsLookupReply *reply)
{
// TODO: Add nameserver support for winRT
if (!nameserver.isNull())
qWarning("Ignoring nameserver as its currently not supported on WinRT");
// TODO: is there any way to do "proper" dns lookup?
if (requestType != QDnsLookup::A && requestType != QDnsLookup::AAAA
&& requestType != QDnsLookup::ANY) {
reply->error = QDnsLookup::InvalidRequestError;
reply->errorString = QLatin1String("WinRT only supports IPv4 and IPv6 requests");
return;
}
QString aceHostname = QUrl::fromAce(requestName);
if (aceHostname.isEmpty()) {
reply->error = QDnsLookup::InvalidRequestError;
reply->errorString = requestName.isEmpty() ? tr("No hostname given") : tr("Invalid hostname");
return;
}
ComPtr<IHostNameFactory> hostnameFactory;
HRESULT hr = RoGetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Networking_HostName).Get(),
IID_PPV_ARGS(&hostnameFactory));
if (FAILED(hr)) {
reply->error = QDnsLookup::ResolverError;
reply->errorString = QLatin1String("Could not obtain hostname factory");
return;
}
ComPtr<IHostName> host;
HStringReference hostNameRef((const wchar_t*)aceHostname.utf16());
hr = hostnameFactory->CreateHostName(hostNameRef.Get(), &host);
Q_ASSERT_SUCCEEDED(hr);
ComPtr<IDatagramSocketStatics> datagramSocketStatics;
hr = GetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Networking_Sockets_DatagramSocket).Get(), &datagramSocketStatics);
Q_ASSERT_SUCCEEDED(hr);
ComPtr<IAsyncOperation<IVectorView<EndpointPair *> *>> op;
hr = datagramSocketStatics->GetEndpointPairsAsync(host.Get(),
HString::MakeReference(L"0").Get(),
&op);
Q_ASSERT_SUCCEEDED(hr);
ComPtr<IVectorView<EndpointPair *>> endpointPairs;
hr = QWinRTFunctions::await(op, endpointPairs.GetAddressOf(), QWinRTFunctions::YieldThread, 60 * 1000);
if (hr == E_NO_SUCH_HOST || !endpointPairs) {
reply->error = QDnsLookup::NotFoundError;
reply->errorString = tr("Host %1 could not be found.").arg(aceHostname);
return;
}
if (FAILED(hr)) {
reply->error = QDnsLookup::ServerFailureError;
reply->errorString = tr("Unknown error");
return;
}
unsigned int size;
hr = endpointPairs->get_Size(&size);
Q_ASSERT_SUCCEEDED(hr);
// endpoint pairs might contain duplicates so we temporarily store addresses in a QSet
QSet<QHostAddress> addresses;
for (unsigned int i = 0; i < size; ++i) {
ComPtr<IEndpointPair> endpointpair;
hr = endpointPairs->GetAt(i, &endpointpair);
Q_ASSERT_SUCCEEDED(hr);
ComPtr<IHostName> remoteHost;
hr = endpointpair->get_RemoteHostName(&remoteHost);
Q_ASSERT_SUCCEEDED(hr);
HostNameType type;
hr = remoteHost->get_Type(&type);
Q_ASSERT_SUCCEEDED(hr);
if (type == HostNameType_Bluetooth || type == HostNameType_DomainName
|| (requestType != QDnsLookup::ANY
&& ((type == HostNameType_Ipv4 && requestType == QDnsLookup::AAAA)
|| (type == HostNameType_Ipv6 && requestType == QDnsLookup::A))))
continue;
HString name;
hr = remoteHost->get_CanonicalName(name.GetAddressOf());
Q_ASSERT_SUCCEEDED(hr);
UINT32 length;
PCWSTR rawString = name.GetRawBuffer(&length);
addresses.insert(QHostAddress(QString::fromWCharArray(rawString, length)));
}
for (const QHostAddress &address : qAsConst(addresses)) {
QDnsHostAddressRecord record;
record.d->name = aceHostname;
record.d->value = address;
reply->hostAddressRecords.append(record);
}
}
QT_END_NAMESPACE
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