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