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// Copyright (C) 2012 Jeremy Lainé <jeremy.laine@m4x.org>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include <winsock2.h>
#include "qdnslookup_p.h"
#include <qurl.h>
#include <private/qsystemerror_p.h>
#include <qt_windows.h>
#include <windns.h>
#include <memory.h>
QT_BEGIN_NAMESPACE
void QDnsLookupRunnable::query(const int requestType, const QByteArray &requestName, const QHostAddress &nameserver, QDnsLookupReply *reply)
{
// Perform DNS query.
PDNS_RECORD dns_records = 0;
const QString requestNameUtf16 = QString::fromUtf8(requestName.data(), requestName.size());
IP4_ARRAY srvList;
memset(&srvList, 0, sizeof(IP4_ARRAY));
if (!nameserver.isNull()) {
if (nameserver.protocol() == QAbstractSocket::IPv4Protocol) {
// The below code is referenced from: http://support.microsoft.com/kb/831226
srvList.AddrCount = 1;
srvList.AddrArray[0] = htonl(nameserver.toIPv4Address());
} else if (nameserver.protocol() == QAbstractSocket::IPv6Protocol) {
// For supoprting IPv6 nameserver addresses, we'll need to switch
// from DnsQuey() to DnsQueryEx() as it supports passing an IPv6
// address in the nameserver list
qWarning("%s", QDnsLookupPrivate::msgNoIpV6NameServerAdresses);
reply->error = QDnsLookup::ResolverError;
reply->errorString = tr(QDnsLookupPrivate::msgNoIpV6NameServerAdresses);
return;
}
}
const DNS_STATUS status = DnsQuery_W(reinterpret_cast<const wchar_t*>(requestNameUtf16.utf16()), requestType, DNS_QUERY_STANDARD, &srvList, &dns_records, NULL);
switch (status) {
case ERROR_SUCCESS:
break;
case DNS_ERROR_RCODE_FORMAT_ERROR:
reply->error = QDnsLookup::InvalidRequestError;
reply->errorString = tr("Server could not process query");
return;
case DNS_ERROR_RCODE_SERVER_FAILURE:
reply->error = QDnsLookup::ServerFailureError;
reply->errorString = tr("Server failure");
return;
case DNS_ERROR_RCODE_NAME_ERROR:
reply->error = QDnsLookup::NotFoundError;
reply->errorString = tr("Non existent domain");
return;
case DNS_ERROR_RCODE_REFUSED:
reply->error = QDnsLookup::ServerRefusedError;
reply->errorString = tr("Server refused to answer");
return;
default:
reply->error = QDnsLookup::InvalidReplyError;
reply->errorString = QSystemError(status, QSystemError::NativeError).toString();
return;
}
// Extract results.
for (PDNS_RECORD ptr = dns_records; ptr != NULL; ptr = ptr->pNext) {
const QString name = QUrl::fromAce( QString::fromWCharArray( ptr->pName ).toLatin1() );
if (ptr->wType == QDnsLookup::A) {
QDnsHostAddressRecord record;
record.d->name = name;
record.d->timeToLive = ptr->dwTtl;
record.d->value = QHostAddress(ntohl(ptr->Data.A.IpAddress));
reply->hostAddressRecords.append(record);
} else if (ptr->wType == QDnsLookup::AAAA) {
Q_IPV6ADDR addr;
memcpy(&addr, &ptr->Data.AAAA.Ip6Address, sizeof(Q_IPV6ADDR));
QDnsHostAddressRecord record;
record.d->name = name;
record.d->timeToLive = ptr->dwTtl;
record.d->value = QHostAddress(addr);
reply->hostAddressRecords.append(record);
} else if (ptr->wType == QDnsLookup::CNAME) {
QDnsDomainNameRecord record;
record.d->name = name;
record.d->timeToLive = ptr->dwTtl;
record.d->value = QUrl::fromAce(QString::fromWCharArray(ptr->Data.Cname.pNameHost).toLatin1());
reply->canonicalNameRecords.append(record);
} else if (ptr->wType == QDnsLookup::MX) {
QDnsMailExchangeRecord record;
record.d->name = name;
record.d->exchange = QUrl::fromAce(QString::fromWCharArray(ptr->Data.Mx.pNameExchange).toLatin1());
record.d->preference = ptr->Data.Mx.wPreference;
record.d->timeToLive = ptr->dwTtl;
reply->mailExchangeRecords.append(record);
} else if (ptr->wType == QDnsLookup::NS) {
QDnsDomainNameRecord record;
record.d->name = name;
record.d->timeToLive = ptr->dwTtl;
record.d->value = QUrl::fromAce(QString::fromWCharArray(ptr->Data.Ns.pNameHost).toLatin1());
reply->nameServerRecords.append(record);
} else if (ptr->wType == QDnsLookup::PTR) {
QDnsDomainNameRecord record;
record.d->name = name;
record.d->timeToLive = ptr->dwTtl;
record.d->value = QUrl::fromAce(QString::fromWCharArray(ptr->Data.Ptr.pNameHost).toLatin1());
reply->pointerRecords.append(record);
} else if (ptr->wType == QDnsLookup::SRV) {
QDnsServiceRecord record;
record.d->name = name;
record.d->target = QUrl::fromAce(QString::fromWCharArray(ptr->Data.Srv.pNameTarget).toLatin1());
record.d->port = ptr->Data.Srv.wPort;
record.d->priority = ptr->Data.Srv.wPriority;
record.d->timeToLive = ptr->dwTtl;
record.d->weight = ptr->Data.Srv.wWeight;
reply->serviceRecords.append(record);
} else if (ptr->wType == QDnsLookup::TXT) {
QDnsTextRecord record;
record.d->name = name;
record.d->timeToLive = ptr->dwTtl;
for (unsigned int i = 0; i < ptr->Data.Txt.dwStringCount; ++i) {
record.d->values << QString::fromWCharArray((ptr->Data.Txt.pStringArray[i])).toLatin1();;
}
reply->textRecords.append(record);
}
}
DnsRecordListFree(dns_records, DnsFreeRecordList);
}
QT_END_NAMESPACE
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