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#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::setPort(quint16 port)
{
m_port = port;
}
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::MultiMC);
resolve(m_lookupAddress, m_port); // 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, m_port); // 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);
if (firstRecord.port() != m_port && m_port != 0)
{
emit logLine(
QString("DNS record for %1 suggested %2 as server port, but user supplied %3. Using user override,"
" but the port may be wrong!\n").arg(m_dnsLookup->name(), QString::number(firstRecord.port()), QString::number(m_port)),
MessageLevel::Warning);
}
else if (m_port == 0)
{
m_port = firstRecord.port();
}
emit logLine(QString("Resolved server address %1 to %2 with port %3\n").arg(
m_dnsLookup->name(), firstRecord.target(), QString::number(m_port)),MessageLevel::MultiMC);
resolve(firstRecord.target(), m_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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