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/* SPDX-FileCopyrightText: 2026 Project Tick
* SPDX-FileContributor: Project Tick
* SPDX-License-Identifier: GPL-3.0-or-later
*
* MeshMC - A Custom Launcher for Minecraft
* Copyright (C) 2026 Project Tick
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* 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 "ExtractNatives.h"
#include <minecraft/MinecraftInstance.h>
#include <launch/LaunchTask.h>
#include "MMCZip.h"
#include "FileSystem.h"
#include <QDir>
#ifdef major
#undef major
#endif
#ifdef minor
#undef minor
#endif
static QString replaceSuffix(QString target, const QString& suffix,
const QString& replacement)
{
if (!target.endsWith(suffix)) {
return target;
}
target.resize(target.length() - suffix.length());
return target + replacement;
}
static bool unzipNatives(QString source, QString targetFolder,
bool applyJnilibHack, bool nativeOpenAL,
bool nativeGLFW)
{
QDir directory(targetFolder);
QStringList entries = MMCZip::listEntries(source);
if (entries.isEmpty()) {
return false;
}
for (const auto& name : entries) {
auto lowercase = name.toLower();
if (nativeGLFW && name.contains("glfw")) {
continue;
}
if (nativeOpenAL && name.contains("openal")) {
continue;
}
// Skip directories
if (name.endsWith('/'))
continue;
QString outName = name;
if (applyJnilibHack) {
outName = replaceSuffix(outName, ".jnilib", ".dylib");
}
QString absFilePath = directory.absoluteFilePath(outName);
if (!MMCZip::extractRelFile(source, name, absFilePath)) {
return false;
}
}
return true;
}
void ExtractNatives::executeTask()
{
auto instance = m_parent->instance();
std::shared_ptr<MinecraftInstance> minecraftInstance =
std::dynamic_pointer_cast<MinecraftInstance>(instance);
auto toExtract = minecraftInstance->getNativeJars();
if (toExtract.isEmpty()) {
emitSucceeded();
return;
}
auto settings = minecraftInstance->settings();
bool nativeOpenAL = settings->get("UseNativeOpenAL").toBool();
bool nativeGLFW = settings->get("UseNativeGLFW").toBool();
auto outputPath = minecraftInstance->getNativePath();
auto javaVersion = minecraftInstance->getJavaVersion();
bool jniHackEnabled = javaVersion.major() >= 8;
for (const auto& source : toExtract) {
if (!unzipNatives(source, outputPath, jniHackEnabled, nativeOpenAL,
nativeGLFW)) {
const char* reason = QT_TR_NOOP(
"Couldn't extract native jar '%1' to destination '%2'");
emit logLine(QString(reason).arg(source, outputPath),
MessageLevel::Fatal);
emitFailed(tr(reason).arg(source, outputPath));
}
}
emitSucceeded();
}
void ExtractNatives::finalize()
{
auto instance = m_parent->instance();
QString target_dir = FS::PathCombine(instance->instanceRoot(), "natives/");
QDir dir(target_dir);
dir.removeRecursively();
}
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