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// SPDX-License-Identifier: GPL-3.0-only
/*
* PolyMC - Minecraft Launcher
* Copyright (c) 2022 flowln <flowlnlnln@gmail.com>
*
* 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, see <https://www.gnu.org/licenses/>.
*/
#include "LocalResourcePackParseTask.h"
#include "FileSystem.h"
#include "Json.h"
#include <quazip/quazip.h>
#include <quazip/quazipdir.h>
#include <quazip/quazipfile.h>
#include <QCryptographicHash>
namespace ResourcePackUtils {
bool process(ResourcePack& pack, ProcessingLevel level)
{
switch (pack.type()) {
case ResourceType::FOLDER:
return ResourcePackUtils::processFolder(pack, level);
case ResourceType::ZIPFILE:
return ResourcePackUtils::processZIP(pack, level);
default:
qWarning() << "Invalid type for resource pack parse task!";
return false;
}
}
bool processFolder(ResourcePack& pack, ProcessingLevel level)
{
Q_ASSERT(pack.type() == ResourceType::FOLDER);
auto mcmeta_invalid = [&pack]() {
qWarning() << "Resource pack at" << pack.fileinfo().filePath() << "does not have a valid pack.mcmeta";
return false; // the mcmeta is not optional
};
QFileInfo mcmeta_file_info(FS::PathCombine(pack.fileinfo().filePath(), "pack.mcmeta"));
if (mcmeta_file_info.exists() && mcmeta_file_info.isFile()) {
QFile mcmeta_file(mcmeta_file_info.filePath());
if (!mcmeta_file.open(QIODevice::ReadOnly))
return mcmeta_invalid(); // can't open mcmeta file
auto data = mcmeta_file.readAll();
bool mcmeta_result = ResourcePackUtils::processMCMeta(pack, std::move(data));
mcmeta_file.close();
if (!mcmeta_result) {
return mcmeta_invalid(); // mcmeta invalid
}
} else {
return mcmeta_invalid(); // mcmeta file isn't a valid file
}
QFileInfo assets_dir_info(FS::PathCombine(pack.fileinfo().filePath(), "assets"));
if (!assets_dir_info.exists() || !assets_dir_info.isDir()) {
return false; // assets dir does not exists or isn't valid
}
if (level == ProcessingLevel::BasicInfoOnly) {
return true; // only need basic info already checked
}
auto png_invalid = [&pack]() {
qWarning() << "Resource pack at" << pack.fileinfo().filePath() << "does not have a valid pack.png";
return true; // the png is optional
};
QFileInfo image_file_info(FS::PathCombine(pack.fileinfo().filePath(), "pack.png"));
if (image_file_info.exists() && image_file_info.isFile()) {
QFile pack_png_file(image_file_info.filePath());
if (!pack_png_file.open(QIODevice::ReadOnly))
return png_invalid(); // can't open pack.png file
auto data = pack_png_file.readAll();
bool pack_png_result = ResourcePackUtils::processPackPNG(pack, std::move(data));
pack_png_file.close();
if (!pack_png_result) {
return png_invalid(); // pack.png invalid
}
} else {
return png_invalid(); // pack.png does not exists or is not a valid file.
}
return true; // all tests passed
}
bool processZIP(ResourcePack& pack, ProcessingLevel level)
{
Q_ASSERT(pack.type() == ResourceType::ZIPFILE);
QuaZip zip(pack.fileinfo().filePath());
if (!zip.open(QuaZip::mdUnzip))
return false; // can't open zip file
QuaZipFile file(&zip);
auto mcmeta_invalid = [&pack]() {
qWarning() << "Resource pack at" << pack.fileinfo().filePath() << "does not have a valid pack.mcmeta";
return false; // the mcmeta is not optional
};
if (zip.setCurrentFile("pack.mcmeta")) {
if (!file.open(QIODevice::ReadOnly)) {
qCritical() << "Failed to open file in zip.";
zip.close();
return mcmeta_invalid();
}
auto data = file.readAll();
bool mcmeta_result = ResourcePackUtils::processMCMeta(pack, std::move(data));
file.close();
if (!mcmeta_result) {
return mcmeta_invalid(); // mcmeta invalid
}
} else {
return mcmeta_invalid(); // could not set pack.mcmeta as current file.
}
QuaZipDir zipDir(&zip);
if (!zipDir.exists("/assets")) {
return false; // assets dir does not exists at zip root
}
if (level == ProcessingLevel::BasicInfoOnly) {
zip.close();
return true; // only need basic info already checked
}
auto png_invalid = [&pack]() {
qWarning() << "Resource pack at" << pack.fileinfo().filePath() << "does not have a valid pack.png";
return true; // the png is optional
};
if (zip.setCurrentFile("pack.png")) {
if (!file.open(QIODevice::ReadOnly)) {
qCritical() << "Failed to open file in zip.";
zip.close();
return png_invalid();
}
auto data = file.readAll();
bool pack_png_result = ResourcePackUtils::processPackPNG(pack, std::move(data));
file.close();
if (!pack_png_result) {
return png_invalid(); // pack.png invalid
}
} else {
return png_invalid(); // could not set pack.mcmeta as current file.
}
zip.close();
return true;
}
// https://minecraft.fandom.com/wiki/Tutorials/Creating_a_resource_pack#Formatting_pack.mcmeta
bool processMCMeta(ResourcePack& pack, QByteArray&& raw_data)
{
try {
auto json_doc = QJsonDocument::fromJson(raw_data);
auto pack_obj = Json::requireObject(json_doc.object(), "pack", {});
pack.setPackFormat(Json::ensureInteger(pack_obj, "pack_format", 0));
pack.setDescription(Json::ensureString(pack_obj, "description", ""));
} catch (Json::JsonException& e) {
qWarning() << "JsonException: " << e.what() << e.cause();
return false;
}
return true;
}
bool processPackPNG(ResourcePack& pack, QByteArray&& raw_data)
{
auto img = QImage::fromData(raw_data);
if (!img.isNull()) {
pack.setImage(img);
} else {
qWarning() << "Failed to parse pack.png.";
return false;
}
return true;
}
bool validate(QFileInfo file)
{
ResourcePack rp{ file };
return ResourcePackUtils::process(rp, ProcessingLevel::BasicInfoOnly) && rp.valid();
}
} // namespace ResourcePackUtils
LocalResourcePackParseTask::LocalResourcePackParseTask(int token, ResourcePack& rp)
: Task(nullptr, false), m_token(token), m_resource_pack(rp)
{}
bool LocalResourcePackParseTask::abort()
{
m_aborted = true;
return true;
}
void LocalResourcePackParseTask::executeTask()
{
if (!ResourcePackUtils::process(m_resource_pack))
return;
if (m_aborted)
emitAborted();
else
emitSucceeded();
}
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