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/* Copyright 2013-2021 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "LookupServerAddress.h"
#include <launch/LaunchTask.h>
LookupServerAddress::LookupServerAddress(LaunchTask *parent) :
LaunchStep(parent), m_dnsLookup(new QDnsLookup(this))
{
connect(m_dnsLookup, &QDnsLookup::finished, this, &LookupServerAddress::on_dnsLookupFinished);
m_dnsLookup->setType(QDnsLookup::SRV);
}
void LookupServerAddress::setLookupAddress(const QString &lookupAddress)
{
m_lookupAddress = lookupAddress;
m_dnsLookup->setName(QString("_minecraft._tcp.%1").arg(lookupAddress));
}
void LookupServerAddress::setOutputAddressPtr(MinecraftServerTargetPtr output)
{
m_output = std::move(output);
}
bool LookupServerAddress::abort()
{
m_dnsLookup->abort();
emitFailed("Aborted");
return true;
}
void LookupServerAddress::executeTask()
{
m_dnsLookup->lookup();
}
void LookupServerAddress::on_dnsLookupFinished()
{
if (isFinished())
{
// Aborted
return;
}
if (m_dnsLookup->error() != QDnsLookup::NoError)
{
emit logLine(QString("Failed to resolve server address (this is NOT an error!) %1: %2\n")
.arg(m_dnsLookup->name(), m_dnsLookup->errorString()), MessageLevel::Launcher);
resolve(m_lookupAddress, 25565); // Technically the task failed, however, we don't abort the launch
// and leave it up to minecraft to fail (or maybe not) when connecting
return;
}
const auto records = m_dnsLookup->serviceRecords();
if (records.empty())
{
emit logLine(
QString("Failed to resolve server address %1: the DNS lookup succeeded, but no records were returned.\n")
.arg(m_dnsLookup->name()), MessageLevel::Warning);
resolve(m_lookupAddress, 25565); // Technically the task failed, however, we don't abort the launch
// and leave it up to minecraft to fail (or maybe not) when connecting
return;
}
const auto &firstRecord = records.at(0);
quint16 port = firstRecord.port();
emit logLine(QString("Resolved server address %1 to %2 with port %3\n").arg(
m_dnsLookup->name(), firstRecord.target(), QString::number(port)),MessageLevel::Launcher);
resolve(firstRecord.target(), port);
}
void LookupServerAddress::resolve(const QString &address, quint16 port)
{
m_output->address = address;
m_output->port = port;
emitSucceeded();
m_dnsLookup->deleteLater();
}
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