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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 "RuntimeProbeStep.hpp"
#include <FileSystem.h>
#include <launch/LaunchPipeline.hpp>
#include <QCryptographicHash>
#include <QFileInfo>
#include <QStandardPaths>
namespace projt::launch::steps
{
RuntimeProbeStep::RuntimeProbeStep(projt::launch::LaunchPipeline* parent) : projt::launch::LaunchStage(parent)
{}
bool RuntimeProbeStep::CachedRuntimeInfo::isComplete() const
{
return !version.isEmpty() && !arch.isEmpty() && !realArch.isEmpty() && !vendor.isEmpty();
}
RuntimeProbeStep::CachedRuntimeInfo RuntimeProbeStep::readCache() const
{
auto settings = m_flow->instance()->settings();
CachedRuntimeInfo cache;
cache.signature = settings->get("JavaSignature").toString();
cache.version = settings->get("JavaVersion").toString();
cache.arch = settings->get("JavaArchitecture").toString();
cache.realArch = settings->get("JavaRealArchitecture").toString();
cache.vendor = settings->get("JavaVendor").toString();
return cache;
}
QString RuntimeProbeStep::computeSignature(const QFileInfo& info, const QString& resolvedPath) const
{
QCryptographicHash hash(QCryptographicHash::Sha1);
hash.addData(QByteArray::number(info.lastModified().toMSecsSinceEpoch()));
hash.addData(resolvedPath.toUtf8());
return hash.result().toHex();
}
bool RuntimeProbeStep::needsProbe(const CachedRuntimeInfo& cache, const QString& signature) const
{
if (cache.signature != signature)
{
return true;
}
return !cache.isComplete();
}
void RuntimeProbeStep::executeTask()
{
auto instance = m_flow->instance();
auto settings = instance->settings();
QString configuredPath = settings->get("JavaPath").toString();
m_resolvedPath = FS::ResolveExecutable(configuredPath);
bool perInstance = settings->get("OverrideJava").toBool() || settings->get("OverrideJavaLocation").toBool();
QString executablePath = QStandardPaths::findExecutable(m_resolvedPath);
if (executablePath.isEmpty())
{
if (perInstance)
{
emit logLine(
QString("The Java binary \"%1\" couldn't be found. Please fix the Java path override in the "
"instance's settings or disable it.")
.arg(configuredPath),
MessageLevel::Warning);
}
else
{
emit logLine(QString("The Java binary \"%1\" couldn't be found. Please set up Java in the settings.")
.arg(configuredPath),
MessageLevel::Warning);
}
emitFailed(QString("Java path is not valid."));
return;
}
emit logLine("Java path is:\n" + m_resolvedPath + "\n\n", MessageLevel::Launcher);
if (projt::java::RuntimeProbeTask::probeJarPath().isEmpty())
{
const char* reason = QT_TR_NOOP("Java checker library could not be found. Please check your installation.");
emit logLine(tr(reason), MessageLevel::Fatal);
emitFailed(tr(reason));
return;
}
QFileInfo javaInfo(executablePath);
m_signature = computeSignature(javaInfo, m_resolvedPath);
auto cache = readCache();
if (!needsProbe(cache, m_signature))
{
printRuntimeInfo(cache.version, cache.arch, cache.realArch, cache.vendor);
instance->updateRuntimeContext();
emitSucceeded();
return;
}
projt::java::RuntimeProbeTask::ProbeSettings probeSettings;
probeSettings.binaryPath = executablePath;
m_probeTask.reset(new projt::java::RuntimeProbeTask(probeSettings));
emit logLine(tr("Checking Java version..."), MessageLevel::Launcher);
connect(m_probeTask.get(),
&projt::java::RuntimeProbeTask::probeFinished,
this,
&RuntimeProbeStep::onProbeFinished);
m_probeTask->start();
}
void RuntimeProbeStep::onProbeFinished(const projt::java::RuntimeProbeTask::ProbeReport& report)
{
switch (report.status)
{
case projt::java::RuntimeProbeTask::ProbeReport::Status::Errored:
{
emit logLine(QString("Could not start java:"), MessageLevel::Error);
emit logLines(report.stderrLog.split('\n'), MessageLevel::Error);
emit logLine(QString("\nCheck your Java settings."), MessageLevel::Launcher);
emitFailed(QString("Could not start java!"));
return;
}
case projt::java::RuntimeProbeTask::ProbeReport::Status::InvalidData:
{
emit logLine(QString("Java checker returned some invalid data we don't understand:"),
MessageLevel::Error);
emit logLines(report.stdoutLog.split('\n'), MessageLevel::Warning);
emit logLine("\nMinecraft might not start properly.", MessageLevel::Launcher);
m_flow->instance()->updateRuntimeContext();
emitSucceeded();
return;
}
case projt::java::RuntimeProbeTask::ProbeReport::Status::Valid:
{
printRuntimeInfo(report.version.toString(), report.platformTag, report.platformArch, report.vendor);
storeProbeResult(report);
m_flow->instance()->updateRuntimeContext();
emitSucceeded();
return;
}
}
}
void RuntimeProbeStep::storeProbeResult(const projt::java::RuntimeProbeTask::ProbeReport& report) const
{
auto settings = m_flow->instance()->settings();
settings->set("JavaVersion", report.version.toString());
settings->set("JavaArchitecture", report.platformTag);
settings->set("JavaRealArchitecture", report.platformArch);
settings->set("JavaVendor", report.vendor);
settings->set("JavaSignature", m_signature);
}
void RuntimeProbeStep::printRuntimeInfo(const QString& version,
const QString& architecture,
const QString& realArchitecture,
const QString& vendor)
{
emit logLine(QString("Java is version %1, using %2 (%3) architecture, from %4.\n\n")
.arg(version, architecture, realArchitecture, vendor),
MessageLevel::Launcher);
}
} // namespace projt::launch::steps
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