sneedmc/launcher/minecraft/launch/MinecraftServerTarget.cpp

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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 "MinecraftServerTarget.h"
#include <QStringList>
// FIXME: the way this is written, it can't ever do any sort of validation and can accept total junk
MinecraftServerTarget MinecraftServerTarget::parse(const QString &fullAddress) {
QStringList split = fullAddress.split(":");
// The logic below replicates the exact logic minecraft uses for parsing server addresses.
// While the conversion is not lossless and eats errors, it ensures the same behavior
// within Minecraft and PolyMC when entering server addresses.
if (fullAddress.startsWith("["))
{
int bracket = fullAddress.indexOf("]");
if (bracket > 0)
{
QString ipv6 = fullAddress.mid(1, bracket - 1);
QString port = fullAddress.mid(bracket + 1).trimmed();
if (port.startsWith(":") && !ipv6.isEmpty())
{
port = port.mid(1);
split = QStringList({ ipv6, port });
}
else
{
split = QStringList({ipv6});
}
}
}
if (split.size() > 2)
{
split = QStringList({fullAddress});
}
QString realAddress = split[0];
quint16 realPort = 25565;
if (split.size() > 1)
{
bool ok;
realPort = split[1].toUInt(&ok);
if (!ok)
{
realPort = 25565;
}
}
return MinecraftServerTarget { realAddress, realPort };
}