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// SPDX-License-Identifier: GPL-3.0-only
// SPDX-FileCopyrightText: 2026 Project Tick
// SPDX-FileContributor: Project Tick Team
/*
* ProjT Launcher - Minecraft Launcher
* 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, version 3.
*
* 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, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "ExtractNatives.hpp"
#include <launch/LaunchPipeline.hpp>
#include <minecraft/MinecraftInstance.h>
#include <quazip/quazip.h>
#include <quazip/quazipdir.h>
#include <quazip/quazipfile.h>
#include <quazip/quazipfileinfo.h>
#include <QDir>
#include "FileSystem.h"
#include "MMCZip.h"
#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 isWithinExtractionRoot(const QDir& root, const QString& path)
{
const auto cleanRoot = QDir::cleanPath(root.absolutePath());
const auto cleanPath = QDir::cleanPath(path);
return cleanPath == cleanRoot || cleanPath.startsWith(cleanRoot + '/');
}
static bool symlinkEscapesExtractionRoot(QuaZip& zip, const QString& outputPath, const QDir& root)
{
QuaZipFileInfo64 info;
if (!zip.getCurrentFileInfo(&info) || !info.isSymbolicLink())
{
return false;
}
QuaZipFile linkFile(&zip);
if (!linkFile.open(QIODevice::ReadOnly))
{
return true;
}
const auto linkTarget = QFile::decodeName(linkFile.readAll());
linkFile.close();
QString resolvedTarget;
if (QDir::isAbsolutePath(linkTarget))
{
resolvedTarget = QDir::cleanPath(linkTarget);
}
else
{
const auto outputDir = QFileInfo(outputPath).dir();
resolvedTarget = QDir::cleanPath(outputDir.absoluteFilePath(linkTarget));
}
return !isWithinExtractionRoot(root, resolvedTarget);
}
static bool unzipNatives(QString source, QString targetFolder, bool applyJnilibHack)
{
QuaZip zip(source);
if (!zip.open(QuaZip::mdUnzip))
{
return false;
}
QDir directory(targetFolder);
if (!zip.goToFirstFile())
{
return false;
}
do
{
QString name = zip.getCurrentFileName();
auto lowercase = name.toLower();
if (applyJnilibHack)
{
name = replaceSuffix(name, ".jnilib", ".dylib");
}
QString absFilePath = directory.absoluteFilePath(name);
if (symlinkEscapesExtractionRoot(zip, absFilePath, directory))
{
return false;
}
if (!JlCompress::extractFile(&zip, "", absFilePath))
{
return false;
}
}
while (zip.goToNextFile());
zip.close();
if (zip.getZipError() != 0)
{
return false;
}
return true;
}
void ExtractNatives::executeTask()
{
auto instance = m_flow->instance();
auto toExtract = instance->getNativeJars();
if (toExtract.isEmpty())
{
emitSucceeded();
return;
}
auto settings = instance->settings();
auto outputPath = instance->getNativePath();
FS::ensureFolderPathExists(outputPath);
auto javaVersion = instance->getRuntimeVersion();
bool jniHackEnabled = javaVersion.major() >= 8;
for (const auto& source : toExtract)
{
if (!unzipNatives(source, outputPath, jniHackEnabled))
{
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_flow->instance();
QString target_dir = FS::PathCombine(instance->instanceRoot(), "natives/");
QDir dir(target_dir);
dir.removeRecursively();
}
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