1 files changed, 151 insertions, 0 deletions
diff --git a/archived/projt-launcher/launcher/JavaCommon.cpp b/archived/projt-launcher/launcher/JavaCommon.cpp
new file mode 100644
index 0000000000..5986249178
--- /dev/null
+++ b/archived/projt-launcher/launcher/JavaCommon.cpp
@@ -0,0 +1,151 @@
+// 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 "JavaCommon.h"
+#include "java/services/RuntimeProbeTask.hpp"
+#include "ui/dialogs/CustomMessageBox.h"
+
+#include <QRegularExpression>
+
+bool JavaCommon::checkJVMArgs(QString jvmargs, QWidget* parent)
+{
+	static const QRegularExpression s_memRegex("-Xm[sx]");
+	static const QRegularExpression s_versionRegex("-version:.*");
+	if (jvmargs.contains("-XX:PermSize=") || jvmargs.contains(s_memRegex) || jvmargs.contains("-XX-MaxHeapSize")
+		|| jvmargs.contains("-XX:InitialHeapSize"))
+	{
+		auto warnStr = QObject::tr(
+			"You tried to manually set a JVM memory option (using \"-XX:PermSize\", \"-XX-MaxHeapSize\", "
+			"\"-XX:InitialHeapSize\", \"-Xmx\" "
+			"or \"-Xms\").\n"
+			"There are dedicated boxes for these in the settings (Java tab, in the Memory group at the top).\n"
+			"This message will be displayed until you remove them from the JVM arguments.");
+		CustomMessageBox::selectable(parent, QObject::tr("JVM arguments warning"), warnStr, QMessageBox::Warning)
+			->exec();
+		return false;
+	}
+	// block lunacy with passing required version to the JVM
+	if (jvmargs.contains(s_versionRegex))
+	{
+		auto warnStr = QObject::tr("You tried to pass required Java version argument to the JVM (using "
+								   "\"-version:xxx\"). This is not safe and will not be "
+								   "allowed.\n"
+								   "This message will be displayed until you remove this from the JVM arguments.");
+		CustomMessageBox::selectable(parent, QObject::tr("JVM arguments warning"), warnStr, QMessageBox::Warning)
+			->exec();
+		return false;
+	}
+	return true;
+}
+
+void JavaCommon::javaWasOk(QWidget* parent, const projt::java::RuntimeProbeTask::ProbeReport& result)
+{
+	QString text;
+	text += QObject::tr("Java test succeeded!<br />Platform reported: %1<br />Java version "
+						"reported: %2<br />Java vendor "
+						"reported: %3<br />")
+				.arg(result.platformArch, result.version.toString(), result.vendor);
+	if (result.stderrLog.size())
+	{
+		auto htmlError = result.stderrLog;
+		htmlError.replace('\n', "<br />");
+		text += QObject::tr("<br />Warnings:<br /><font color=\"orange\">%1</font>").arg(htmlError);
+	}
+	CustomMessageBox::selectable(parent, QObject::tr("Java test success"), text, QMessageBox::Information)->show();
+}
+
+void JavaCommon::javaArgsWereBad(QWidget* parent, const projt::java::RuntimeProbeTask::ProbeReport& result)
+{
+	auto htmlError = result.stderrLog;
+	QString text;
+	htmlError.replace('\n', "<br />");
+	text += QObject::tr("The specified Java binary didn't work with the arguments you provided:<br />");
+	text += QString("<font color=\"red\">%1</font>").arg(htmlError);
+	CustomMessageBox::selectable(parent, QObject::tr("Java test failure"), text, QMessageBox::Warning)->show();
+}
+
+void JavaCommon::javaBinaryWasBad(QWidget* parent, const projt::java::RuntimeProbeTask::ProbeReport& result)
+{
+	QString text;
+	text += QObject::tr("The specified Java binary didn't work.<br />You should press 'Detect', "
+						"or set the path to the Java executable.<br />");
+	CustomMessageBox::selectable(parent, QObject::tr("Java test failure"), text, QMessageBox::Warning)->show();
+}
+
+void JavaCommon::javaCheckNotFound(QWidget* parent)
+{
+	QString text;
+	text += QObject::tr("Java checker library could not be found. Please check your installation.");
+	CustomMessageBox::selectable(parent, QObject::tr("Java test failure"), text, QMessageBox::Warning)->show();
+}
+
+void JavaCommon::TestCheck::run()
+{
+	if (!JavaCommon::checkJVMArgs(m_args, m_parent))
+	{
+		emit finished();
+		return;
+	}
+	if (projt::java::RuntimeProbeTask::probeJarPath().isEmpty())
+	{
+		javaCheckNotFound(m_parent);
+		emit finished();
+		return;
+	}
+	projt::java::RuntimeProbeTask::ProbeSettings settings;
+	settings.binaryPath = m_path;
+	checker.reset(new projt::java::RuntimeProbeTask(settings));
+	connect(checker.get(), &projt::java::RuntimeProbeTask::probeFinished, this, &JavaCommon::TestCheck::checkFinished);
+	checker->start();
+}
+
+void JavaCommon::TestCheck::checkFinished(const projt::java::RuntimeProbeTask::ProbeReport& result)
+{
+	if (result.status != projt::java::RuntimeProbeTask::ProbeReport::Status::Valid)
+	{
+		javaBinaryWasBad(m_parent, result);
+		emit finished();
+		return;
+	}
+	projt::java::RuntimeProbeTask::ProbeSettings settings;
+	settings.binaryPath = m_path;
+	settings.extraArgs	= m_args;
+	settings.minMem		= m_minMem;
+	settings.maxMem		= m_maxMem;
+	settings.permGen	= result.version.needsPermGen() ? m_permGen : 0;
+	checker.reset(new projt::java::RuntimeProbeTask(settings));
+	connect(checker.get(),
+			&projt::java::RuntimeProbeTask::probeFinished,
+			this,
+			&JavaCommon::TestCheck::checkFinishedWithArgs);
+	checker->start();
+}
+
+void JavaCommon::TestCheck::checkFinishedWithArgs(const projt::java::RuntimeProbeTask::ProbeReport& result)
+{
+	if (result.status == projt::java::RuntimeProbeTask::ProbeReport::Status::Valid)
+	{
+		javaWasOk(m_parent, result);
+		emit finished();
+		return;
+	}
+	javaArgsWereBad(m_parent, result);
+	emit finished();
+}