Add 'meshmc/' from commit 'fad6a1066616b69d7f5fef01178efdf014c59537'

git-subtree-dir: meshmc
git-subtree-mainline: 934382c8a1ce738589dee9ee0f14e1cec812770e
git-subtree-split: fad6a1066616b69d7f5fef01178efdf014c59537

1 files changed, 386 insertions, 0 deletions

diff --git a/meshmc/launcher/minecraft/OneSixVersionFormat.cpp b/meshmc/launcher/minecraft/OneSixVersionFormat.cpp
new file mode 100644
index 0000000000..990b845d95
--- /dev/null
+++ b/meshmc/launcher/minecraft/OneSixVersionFormat.cpp
@@ -0,0 +1,386 @@
+/* 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/>.
+ */
+
+#include "OneSixVersionFormat.h"
+#include <Json.h>
+#include "minecraft/ParseUtils.h"
+#include <minecraft/MojangVersionFormat.h>
+
+using namespace Json;
+
+static void readString(const QJsonObject& root, const QString& key,
+					   QString& variable)
+{
+	if (root.contains(key)) {
+		variable = requireString(root.value(key));
+	}
+}
+
+LibraryPtr OneSixVersionFormat::libraryFromJson(ProblemContainer& problems,
+												const QJsonObject& libObj,
+												const QString& filename)
+{
+	LibraryPtr out =
+		MojangVersionFormat::libraryFromJson(problems, libObj, filename);
+	readString(libObj, "MMC-hint", out->m_hint);
+	readString(libObj, "MMC-absulute_url", out->m_absoluteURL);
+	readString(libObj, "MMC-absoluteUrl", out->m_absoluteURL);
+	readString(libObj, "MMC-filename", out->m_filename);
+	readString(libObj, "MMC-displayname", out->m_displayname);
+	return out;
+}
+
+QJsonObject OneSixVersionFormat::libraryToJson(Library* library)
+{
+	QJsonObject libRoot = MojangVersionFormat::libraryToJson(library);
+	if (library->m_absoluteURL.size())
+		libRoot.insert("MMC-absoluteUrl", library->m_absoluteURL);
+	if (library->m_hint.size())
+		libRoot.insert("MMC-hint", library->m_hint);
+	if (library->m_filename.size())
+		libRoot.insert("MMC-filename", library->m_filename);
+	if (library->m_displayname.size())
+		libRoot.insert("MMC-displayname", library->m_displayname);
+	return libRoot;
+}
+
+VersionFilePtr OneSixVersionFormat::versionFileFromJson(
+	const QJsonDocument& doc, const QString& filename, const bool requireOrder)
+{
+	VersionFilePtr out(new VersionFile());
+	if (doc.isEmpty() || doc.isNull()) {
+		throw JSONValidationError(filename + " is empty or null");
+	}
+	if (!doc.isObject()) {
+		throw JSONValidationError(filename + " is not an object");
+	}
+
+	QJsonObject root = doc.object();
+
+	Meta::MetadataVersion formatVersion = Meta::parseFormatVersion(root, false);
+	switch (formatVersion) {
+		case Meta::MetadataVersion::InitialRelease:
+			break;
+		case Meta::MetadataVersion::Invalid:
+			throw JSONValidationError(filename +
+									  " does not contain a recognizable "
+									  "version of the metadata format.");
+	}
+
+	if (requireOrder) {
+		if (root.contains("order")) {
+			out->order = requireInteger(root.value("order"));
+		} else {
+			// FIXME: evaluate if we don't want to throw exceptions here instead
+			qCritical() << filename << "doesn't contain an order field";
+		}
+	}
+
+	out->name = root.value("name").toString();
+
+	if (root.contains("uid")) {
+		out->uid = root.value("uid").toString();
+	} else {
+		out->uid = root.value("fileId").toString();
+	}
+
+	out->version = root.value("version").toString();
+
+	MojangVersionFormat::readVersionProperties(root, out.get());
+
+	// added for legacy Minecraft window embedding, TODO: remove
+	readString(root, "appletClass", out->appletClass);
+
+	if (root.contains("+tweakers")) {
+		for (auto tweakerVal : requireArray(root.value("+tweakers"))) {
+			out->addTweakers.append(requireString(tweakerVal));
+		}
+	}
+
+	if (root.contains("+traits")) {
+		for (auto tweakerVal : requireArray(root.value("+traits"))) {
+			out->traits.insert(requireString(tweakerVal));
+		}
+	}
+
+	if (root.contains("jarMods")) {
+		for (auto libVal : requireArray(root.value("jarMods"))) {
+			QJsonObject libObj = requireObject(libVal);
+			// parse the jarmod
+			auto lib =
+				OneSixVersionFormat::jarModFromJson(*out, libObj, filename);
+			// and add to jar mods
+			out->jarMods.append(lib);
+		}
+	} else if (root.contains(
+				   "+jarMods")) // DEPRECATED: old style '+jarMods' are only
+								// here for backwards compatibility
+	{
+		for (auto libVal : requireArray(root.value("+jarMods"))) {
+			QJsonObject libObj = requireObject(libVal);
+			// parse the jarmod
+			auto lib = OneSixVersionFormat::plusJarModFromJson(
+				*out, libObj, filename, out->name);
+			// and add to jar mods
+			out->jarMods.append(lib);
+		}
+	}
+
+	if (root.contains("mods")) {
+		for (auto libVal : requireArray(root.value("mods"))) {
+			QJsonObject libObj = requireObject(libVal);
+			// parse the jarmod
+			auto lib = OneSixVersionFormat::modFromJson(*out, libObj, filename);
+			// and add to jar mods
+			out->mods.append(lib);
+		}
+	}
+
+	auto readLibs = [&](const char* which, QList<LibraryPtr>& outList) {
+		for (auto libVal : requireArray(root.value(which))) {
+			QJsonObject libObj = requireObject(libVal);
+			// parse the library
+			auto lib = libraryFromJson(*out, libObj, filename);
+			outList.append(lib);
+		}
+	};
+	bool hasPlusLibs = root.contains("+libraries");
+	bool hasLibs = root.contains("libraries");
+	if (hasPlusLibs && hasLibs) {
+		out->addProblem(
+			ProblemSeverity::Warning,
+			QObject::tr("Version file has both '+libraries' and 'libraries'. "
+						"This is no longer supported."));
+		readLibs("libraries", out->libraries);
+		readLibs("+libraries", out->libraries);
+	} else if (hasLibs) {
+		readLibs("libraries", out->libraries);
+	} else if (hasPlusLibs) {
+		readLibs("+libraries", out->libraries);
+	}
+
+	if (root.contains("mavenFiles")) {
+		readLibs("mavenFiles", out->mavenFiles);
+	}
+
+	// if we have mainJar, just use it
+	if (root.contains("mainJar")) {
+		QJsonObject libObj = requireObject(root, "mainJar");
+		out->mainJar = libraryFromJson(*out, libObj, filename);
+	}
+	// else reconstruct it from downloads and id ... if that's available
+	else if (!out->minecraftVersion.isEmpty()) {
+		auto lib = std::make_shared<Library>();
+		lib->setRawName(
+			GradleSpecifier(QString("com.mojang:minecraft:%1:client")
+								.arg(out->minecraftVersion)));
+		// we have a reliable client download, use it.
+		if (out->mojangDownloads.contains("client")) {
+			auto LibDLInfo = std::make_shared<MojangLibraryDownloadInfo>();
+			LibDLInfo->artifact = out->mojangDownloads["client"];
+			lib->setMojangDownloadInfo(LibDLInfo);
+		}
+		// we got nothing...
+		else {
+			out->addProblem(
+				ProblemSeverity::Error,
+				QObject::tr(
+					"URL for the main jar could not be determined - Mojang "
+					"removed the server that we used as fallback."));
+		}
+		out->mainJar = lib;
+	}
+
+	if (root.contains("requires")) {
+		Meta::parseRequires(root, &out->requirements);
+	}
+	QString dependsOnMinecraftVersion = root.value("mcVersion").toString();
+	if (!dependsOnMinecraftVersion.isEmpty()) {
+		Meta::Require mcReq;
+		mcReq.uid = "net.minecraft";
+		mcReq.equalsVersion = dependsOnMinecraftVersion;
+		if (out->requirements.count(mcReq) == 0) {
+			out->requirements.insert(mcReq);
+		}
+	}
+	if (root.contains("conflicts")) {
+		Meta::parseRequires(root, &out->conflicts);
+	}
+	if (root.contains("volatile")) {
+		out->m_volatile = requireBoolean(root, "volatile");
+	}
+
+	/* removed features that shouldn't be used */
+	if (root.contains("tweakers")) {
+		out->addProblem(
+			ProblemSeverity::Error,
+			QObject::tr(
+				"Version file contains unsupported element 'tweakers'"));
+	}
+	if (root.contains("-libraries")) {
+		out->addProblem(
+			ProblemSeverity::Error,
+			QObject::tr(
+				"Version file contains unsupported element '-libraries'"));
+	}
+	if (root.contains("-tweakers")) {
+		out->addProblem(
+			ProblemSeverity::Error,
+			QObject::tr(
+				"Version file contains unsupported element '-tweakers'"));
+	}
+	if (root.contains("-minecraftArguments")) {
+		out->addProblem(ProblemSeverity::Error,
+						QObject::tr("Version file contains unsupported element "
+									"'-minecraftArguments'"));
+	}
+	if (root.contains("+minecraftArguments")) {
+		out->addProblem(ProblemSeverity::Error,
+						QObject::tr("Version file contains unsupported element "
+									"'+minecraftArguments'"));
+	}
+	return out;
+}
+
+QJsonDocument
+OneSixVersionFormat::versionFileToJson(const VersionFilePtr& patch)
+{
+	QJsonObject root;
+	writeString(root, "name", patch->name);
+
+	writeString(root, "uid", patch->uid);
+
+	writeString(root, "version", patch->version);
+
+	Meta::serializeFormatVersion(root, Meta::MetadataVersion::InitialRelease);
+
+	MojangVersionFormat::writeVersionProperties(patch.get(), root);
+
+	if (patch->mainJar) {
+		root.insert("mainJar", libraryToJson(patch->mainJar.get()));
+	}
+	writeString(root, "appletClass", patch->appletClass);
+	writeStringList(root, "+tweakers", patch->addTweakers);
+	writeStringList(root, "+traits", patch->traits.values());
+	if (!patch->libraries.isEmpty()) {
+		QJsonArray array;
+		for (auto value : patch->libraries) {
+			array.append(OneSixVersionFormat::libraryToJson(value.get()));
+		}
+		root.insert("libraries", array);
+	}
+	if (!patch->mavenFiles.isEmpty()) {
+		QJsonArray array;
+		for (auto value : patch->mavenFiles) {
+			array.append(OneSixVersionFormat::libraryToJson(value.get()));
+		}
+		root.insert("mavenFiles", array);
+	}
+	if (!patch->jarMods.isEmpty()) {
+		QJsonArray array;
+		for (auto value : patch->jarMods) {
+			array.append(OneSixVersionFormat::jarModtoJson(value.get()));
+		}
+		root.insert("jarMods", array);
+	}
+	if (!patch->mods.isEmpty()) {
+		QJsonArray array;
+		for (auto value : patch->jarMods) {
+			array.append(OneSixVersionFormat::modtoJson(value.get()));
+		}
+		root.insert("mods", array);
+	}
+	if (!patch->requirements.empty()) {
+		Meta::serializeRequires(root, &patch->requirements, "requires");
+	}
+	if (!patch->conflicts.empty()) {
+		Meta::serializeRequires(root, &patch->conflicts, "conflicts");
+	}
+	if (patch->m_volatile) {
+		root.insert("volatile", true);
+	}
+	// write the contents to a json document.
+	{
+		QJsonDocument out;
+		out.setObject(root);
+		return out;
+	}
+}
+
+LibraryPtr OneSixVersionFormat::plusJarModFromJson(ProblemContainer& problems,
+												   const QJsonObject& libObj,
+												   const QString& filename,
+												   const QString& originalName)
+{
+	LibraryPtr out(new Library());
+	if (!libObj.contains("name")) {
+		throw JSONValidationError(
+			filename + "contains a jarmod that doesn't have a 'name' field");
+	}
+
+	// just make up something unique on the spot for the library name.
+	auto uuid = QUuid::createUuid();
+	QString id = uuid.toString().remove('{').remove('}');
+	out->setRawName(GradleSpecifier("org.projecttick.jarmods:" + id + ":1"));
+
+	// filename override is the old name
+	out->setFilename(libObj.value("name").toString());
+
+	// it needs to be local, it is stored in the instance jarmods folder
+	out->setHint("local");
+
+	// read the original name if present - some versions did not set it
+	// it is the original jar mod filename before it got renamed at the point of
+	// addition
+	auto displayName = libObj.value("originalName").toString();
+	if (displayName.isEmpty()) {
+		auto fixed = originalName;
+		fixed.remove(" (jar mod)");
+		out->setDisplayName(fixed);
+	} else {
+		out->setDisplayName(displayName);
+	}
+	return out;
+}
+
+LibraryPtr OneSixVersionFormat::jarModFromJson(ProblemContainer& problems,
+											   const QJsonObject& libObj,
+											   const QString& filename)
+{
+	return libraryFromJson(problems, libObj, filename);
+}
+
+QJsonObject OneSixVersionFormat::jarModtoJson(Library* jarmod)
+{
+	return libraryToJson(jarmod);
+}
+
+LibraryPtr OneSixVersionFormat::modFromJson(ProblemContainer& problems,
+											const QJsonObject& libObj,
+											const QString& filename)
+{
+	return libraryFromJson(problems, libObj, filename);
+}
+
+QJsonObject OneSixVersionFormat::modtoJson(Library* jarmod)
+{
+	return libraryToJson(jarmod);
+}