sneedmc/logic/minecraft/VersionBuilder.cpp
2014-09-06 19:03:05 +02:00

361 lines
10 KiB
C++

/* Copyright 2013 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 <QList>
#include <QJsonObject>
#include <QJsonArray>
#include <QJsonDocument>
#include <QFile>
#include <QFileInfo>
#include <QMessageBox>
#include <QObject>
#include <QDir>
#include <qresource.h>
#include <modutils.h>
#include "MultiMC.h"
#include "logic/minecraft/VersionBuilder.h"
#include "logic/minecraft/InstanceVersion.h"
#include "logic/minecraft/OneSixRule.h"
#include "logic/minecraft/VersionPatch.h"
#include "logic/minecraft/VersionFile.h"
#include "VersionBuildError.h"
#include "MinecraftVersionList.h"
#include "logic/OneSixInstance.h"
#include "logic/MMCJson.h"
#include "logger/QsLog.h"
VersionBuilder::VersionBuilder()
{
}
void VersionBuilder::build(InstanceVersion *version, OneSixInstance *instance,
const QStringList &external)
{
VersionBuilder builder;
builder.m_version = version;
builder.m_instance = instance;
builder.external_patches = external;
builder.buildInternal();
}
void VersionBuilder::readJsonAndApplyToVersion(InstanceVersion *version, const QJsonObject &obj)
{
VersionBuilder builder;
builder.m_version = version;
builder.m_instance = 0;
builder.readJsonAndApply(obj);
}
void VersionBuilder::buildFromCustomJson()
{
QLOG_INFO() << "Building version from custom.json within the instance.";
QLOG_INFO() << "Reading custom.json";
auto file = parseJsonFile(QFileInfo(instance_root.absoluteFilePath("custom.json")), false);
file->name = "custom.json";
file->filename = "custom.json";
file->fileId = "org.multimc.custom.json";
file->order = -1;
file->version = QString();
m_version->VersionPatches.append(file);
m_version->finalize();
return;
}
void VersionBuilder::buildFromVersionJson()
{
QLOG_INFO() << "Building version from version.json and patches within the instance.";
QLOG_INFO() << "Reading version.json";
auto file = parseJsonFile(QFileInfo(instance_root.absoluteFilePath("version.json")), false);
file->name = "Minecraft";
file->fileId = "org.multimc.version.json";
file->order = -1;
file->version = m_instance->intendedVersionId();
file->mcVersion = m_instance->intendedVersionId();
m_version->VersionPatches.append(file);
// load all patches, put into map for ordering, apply in the right order
readInstancePatches();
// some final touches
m_version->finalize();
}
void VersionBuilder::readInstancePatches()
{
PatchOrder userOrder;
readOverrideOrders(m_instance, userOrder);
QDir patches(instance_root.absoluteFilePath("patches/"));
// first, load things by sort order.
for (auto id : userOrder)
{
// ignore builtins
if (id == "net.minecraft")
continue;
if (id == "org.lwjgl")
continue;
// parse the file
QString filename = patches.absoluteFilePath(id + ".json");
QFileInfo finfo(filename);
if(!finfo.exists())
{
QLOG_INFO() << "Patch file " << filename << " was deleted by external means...";
continue;
}
QLOG_INFO() << "Reading" << filename << "by user order";
auto file = parseJsonFile(finfo, false);
// sanity check. prevent tampering with files.
if (file->fileId != id)
{
throw VersionBuildError(
QObject::tr("load id %1 does not match internal id %2").arg(id, file->fileId));
}
m_version->VersionPatches.append(file);
}
// now load the rest by internal preference.
QMap<int, QPair<QString, VersionFilePtr>> files;
for (auto info : patches.entryInfoList(QStringList() << "*.json", QDir::Files))
{
// parse the file
QLOG_INFO() << "Reading" << info.fileName();
auto file = parseJsonFile(info, true);
// ignore builtins
if (file->fileId == "net.minecraft")
continue;
if (file->fileId == "org.lwjgl")
continue;
// do not load what we already loaded in the first pass
if (userOrder.contains(file->fileId))
continue;
if (files.contains(file->order))
{
// FIXME: do not throw?
throw VersionBuildError(QObject::tr("%1 has the same order as %2")
.arg(file->fileId, files[file->order].second->fileId));
}
files.insert(file->order, qMakePair(info.fileName(), file));
}
for (auto order : files.keys())
{
auto &filePair = files[order];
m_version->VersionPatches.append(filePair.second);
}
}
void VersionBuilder::buildFromExternalPatches()
{
QLOG_INFO() << "Building version from external files.";
int externalOrder = -1;
for (auto fileName : external_patches)
{
QLOG_INFO() << "Reading" << fileName;
auto file = parseJsonFile(QFileInfo(fileName), false, fileName.endsWith("pack.json"));
file->name = QFileInfo(fileName).fileName();
file->fileId = "org.multimc.external." + file->name;
file->order = (externalOrder += 1);
file->version = QString();
file->mcVersion = QString();
m_version->VersionPatches.append(file);
}
// some final touches
m_version->finalize();
}
void VersionBuilder::buildFromMultilayer()
{
QLOG_INFO() << "Building version from multilayered sources.";
// just the builtin stuff for now
auto minecraftList = MMC->minecraftlist();
auto mcversion = minecraftList->findVersion(m_instance->intendedVersionId());
auto minecraftPatch = std::dynamic_pointer_cast<VersionPatch>(mcversion);
if (!minecraftPatch)
{
throw VersionIncomplete("net.minecraft");
}
minecraftPatch->setOrder(-2);
m_version->VersionPatches.append(minecraftPatch);
// TODO: this is obviously fake.
QResource LWJGL(":/versions/LWJGL/2.9.1.json");
auto lwjgl = parseJsonFile(LWJGL.absoluteFilePath(), false, false);
auto lwjglPatch = std::dynamic_pointer_cast<VersionPatch>(lwjgl);
if (!lwjglPatch)
{
throw VersionIncomplete("org.lwjgl");
}
lwjglPatch->setOrder(-1);
lwjgl->setVanilla(true);
m_version->VersionPatches.append(lwjglPatch);
// load all patches, put into map for ordering, apply in the right order
readInstancePatches();
m_version->finalize();
}
void VersionBuilder::buildInternal()
{
m_version->VersionPatches.clear();
instance_root = QDir(m_instance->instanceRoot());
// if we do external files, do just those.
if (!external_patches.isEmpty())
{
buildFromExternalPatches();
}
// else, if there's custom json, we just do that.
else if (QFile::exists(instance_root.absoluteFilePath("custom.json")))
{
buildFromCustomJson();
}
// version.json -> patches/*.json
else if (QFile::exists(instance_root.absoluteFilePath("version.json")))
{
buildFromVersionJson();
}
else
{
buildFromMultilayer();
}
}
void VersionBuilder::readJsonAndApply(const QJsonObject &obj)
{
m_version->clear();
auto file = VersionFile::fromJson(QJsonDocument(obj), QString(), false);
file->applyTo(m_version);
m_version->VersionPatches.append(file);
}
VersionFilePtr VersionBuilder::parseJsonFile(const QFileInfo &fileInfo, const bool requireOrder,
bool isFTB)
{
QFile file(fileInfo.absoluteFilePath());
if (!file.open(QFile::ReadOnly))
{
throw JSONValidationError(QObject::tr("Unable to open the version file %1: %2.")
.arg(fileInfo.fileName(), file.errorString()));
}
QJsonParseError error;
QJsonDocument doc = QJsonDocument::fromJson(file.readAll(), &error);
if (error.error != QJsonParseError::NoError)
{
throw JSONValidationError(
QObject::tr("Unable to process the version file %1: %2 at %3.")
.arg(fileInfo.fileName(), error.errorString())
.arg(error.offset));
}
return VersionFile::fromJson(doc, file.fileName(), requireOrder, isFTB);
}
VersionFilePtr VersionBuilder::parseBinaryJsonFile(const QFileInfo &fileInfo)
{
QFile file(fileInfo.absoluteFilePath());
if (!file.open(QFile::ReadOnly))
{
throw JSONValidationError(QObject::tr("Unable to open the version file %1: %2.")
.arg(fileInfo.fileName(), file.errorString()));
}
QJsonDocument doc = QJsonDocument::fromBinaryData(file.readAll());
file.close();
if (doc.isNull())
{
file.remove();
throw JSONValidationError(
QObject::tr("Unable to process the version file %1.").arg(fileInfo.fileName()));
}
return VersionFile::fromJson(doc, file.fileName(), false, false);
}
static const int currentOrderFileVersion = 1;
bool VersionBuilder::readOverrideOrders(OneSixInstance *instance, PatchOrder &order)
{
QFile orderFile(instance->instanceRoot() + "/order.json");
if (!orderFile.exists())
{
QLOG_WARN() << "Order file doesn't exist. Ignoring.";
return false;
}
if (!orderFile.open(QFile::ReadOnly))
{
QLOG_ERROR() << "Couldn't open" << orderFile.fileName()
<< " for reading:" << orderFile.errorString();
QLOG_WARN() << "Ignoring overriden order";
return false;
}
// and it's valid JSON
QJsonParseError error;
QJsonDocument doc = QJsonDocument::fromJson(orderFile.readAll(), &error);
if (error.error != QJsonParseError::NoError)
{
QLOG_ERROR() << "Couldn't parse" << orderFile.fileName() << ":" << error.errorString();
QLOG_WARN() << "Ignoring overriden order";
return false;
}
// and then read it and process it if all above is true.
try
{
auto obj = MMCJson::ensureObject(doc);
// check order file version.
auto version = MMCJson::ensureInteger(obj.value("version"), "version");
if (version != currentOrderFileVersion)
{
throw JSONValidationError(QObject::tr("Invalid order file version, expected %1")
.arg(currentOrderFileVersion));
}
auto orderArray = MMCJson::ensureArray(obj.value("order"));
for(auto item: orderArray)
{
order.append(MMCJson::ensureString(item));
}
}
catch (JSONValidationError &err)
{
QLOG_ERROR() << "Couldn't parse" << orderFile.fileName() << ": bad file format";
QLOG_WARN() << "Ignoring overriden order";
order.clear();
return false;
}
return true;
}
bool VersionBuilder::writeOverrideOrders(OneSixInstance *instance, const PatchOrder &order)
{
QJsonObject obj;
obj.insert("version", currentOrderFileVersion);
QJsonArray orderArray;
for(auto str: order)
{
orderArray.append(str);
}
obj.insert("order", orderArray);
QFile orderFile(instance->instanceRoot() + "/order.json");
if (!orderFile.open(QFile::WriteOnly))
{
QLOG_ERROR() << "Couldn't open" << orderFile.fileName()
<< "for writing:" << orderFile.errorString();
return false;
}
orderFile.write(QJsonDocument(obj).toJson(QJsonDocument::Indented));
return true;
}