NOISSUE sanitize loading and downloading of metadata files

1 files changed, 144 insertions, 0 deletions

diff --git a/api/logic/meta/JsonFormat.cpp b/api/logic/meta/JsonFormat.cpp
new file mode 100644
index 00000000..4e43b715
--- /dev/null
+++ b/api/logic/meta/JsonFormat.cpp
@@ -0,0 +1,144 @@
+/* Copyright 2015-2017 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "JsonFormat.h"
+
+// FIXME: remove this from here... somehow
+#include "minecraft/onesix/OneSixVersionFormat.h"
+#include "Json.h"
+
+#include "Index.h"
+#include "Version.h"
+#include "VersionList.h"
+
+using namespace Json;
+
+namespace Meta
+{
+
+static const int currentFormatVersion = 0;
+
+// Index
+static BaseEntity::Ptr parseIndexInternal(const QJsonObject &obj)
+{
+	const QVector<QJsonObject> objects = requireIsArrayOf<QJsonObject>(obj, "packages");
+	QVector<VersionListPtr> lists;
+	lists.reserve(objects.size());
+	std::transform(objects.begin(), objects.end(), std::back_inserter(lists), [](const QJsonObject &obj)
+	{
+		VersionListPtr list = std::make_shared<VersionList>(requireString(obj, "uid"));
+		list->setName(ensureString(obj, "name", QString()));
+		return list;
+	});
+	return std::make_shared<Index>(lists);
+}
+
+// Version
+static VersionPtr parseCommonVersion(const QString &uid, const QJsonObject &obj)
+{
+	const QVector<QJsonObject> requiresRaw = obj.contains("requires") ? requireIsArrayOf<QJsonObject>(obj, "requires") : QVector<QJsonObject>();
+	QVector<Reference> requires;
+	requires.reserve(requiresRaw.size());
+	std::transform(requiresRaw.begin(), requiresRaw.end(), std::back_inserter(requires), [](const QJsonObject &rObj)
+	{
+		Reference ref(requireString(rObj, "uid"));
+		ref.setVersion(ensureString(rObj, "version", QString()));
+		return ref;
+	});
+
+	VersionPtr version = std::make_shared<Version>(uid, requireString(obj, "version"));
+	version->setTime(QDateTime::fromString(requireString(obj, "releaseTime"), Qt::ISODate).toMSecsSinceEpoch() / 1000);
+	version->setType(ensureString(obj, "type", QString()));
+	version->setRequires(requires);
+	return version;
+}
+
+static BaseEntity::Ptr parseVersionInternal(const QJsonObject &obj)
+{
+	VersionPtr version = parseCommonVersion(requireString(obj, "uid"), obj);
+
+	version->setData(OneSixVersionFormat::versionFileFromJson(QJsonDocument(obj),
+										   QString("%1/%2.json").arg(version->uid(), version->version()),
+										   obj.contains("order")));
+	return version;
+}
+
+// Version list / package
+static BaseEntity::Ptr parseVersionListInternal(const QJsonObject &obj)
+{
+	const QString uid = requireString(obj, "uid");
+
+	const QVector<QJsonObject> versionsRaw = requireIsArrayOf<QJsonObject>(obj, "versions");
+	QVector<VersionPtr> versions;
+	versions.reserve(versionsRaw.size());
+	std::transform(versionsRaw.begin(), versionsRaw.end(), std::back_inserter(versions), [uid](const QJsonObject &vObj)
+	{
+		return parseCommonVersion(uid, vObj);
+	});
+
+	VersionListPtr list = std::make_shared<VersionList>(uid);
+	list->setName(ensureString(obj, "name", QString()));
+	list->setVersions(versions);
+	return list;
+}
+
+
+static int formatVersion(const QJsonObject &obj)
+{
+	if (!obj.contains("formatVersion")) {
+		throw ParseException(QObject::tr("Missing required field: 'formatVersion'"));
+	}
+	if (!obj.value("formatVersion").isDouble()) {
+		throw ParseException(QObject::tr("Required field has invalid type: 'formatVersion'"));
+	}
+	return obj.value("formatVersion").toInt();
+}
+
+void parseIndex(const QJsonObject &obj, Index *ptr)
+{
+	const int version = formatVersion(obj);
+	switch (version) {
+	case 0:
+		ptr->merge(parseIndexInternal(obj));
+		break;
+	default:
+		throw ParseException(QObject::tr("Unknown formatVersion: %1").arg(version));
+	}
+}
+
+void parseVersionList(const QJsonObject &obj, VersionList *ptr)
+{
+	const int version = formatVersion(obj);
+	switch (version) {
+	case 0:
+		ptr->merge(parseVersionListInternal(obj));
+		break;
+	default:
+		throw ParseException(QObject::tr("Unknown formatVersion: %1").arg(version));
+	}
+}
+
+void parseVersion(const QJsonObject &obj, Version *ptr)
+{
+	const int version = formatVersion(obj);
+	switch (version) {
+	case 0:
+		ptr->merge(parseVersionInternal(obj));
+		break;
+	default:
+		throw ParseException(QObject::tr("Unknown formatVersion: %1").arg(version));
+	}
+}
+}