pollymc/logic/ForgeInstaller.cpp

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/* 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 "ForgeInstaller.h"
#include "OneSixVersion.h"
#include "OneSixLibrary.h"
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#include "net/HttpMetaCache.h"
#include <quazip.h>
#include <quazipfile.h>
#include <pathutils.h>
#include <QStringList>
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#include "MultiMC.h"
ForgeInstaller::ForgeInstaller(QString filename, QString universal_url)
{
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std::shared_ptr<OneSixVersion> newVersion;
m_universal_url = universal_url;
QuaZip zip(filename);
if (!zip.open(QuaZip::mdUnzip))
return;
QuaZipFile file(&zip);
// read the install profile
if (!zip.setCurrentFile("install_profile.json"))
return;
QJsonParseError jsonError;
if (!file.open(QIODevice::ReadOnly))
return;
QJsonDocument jsonDoc = QJsonDocument::fromJson(file.readAll(), &jsonError);
file.close();
if (jsonError.error != QJsonParseError::NoError)
return;
if (!jsonDoc.isObject())
return;
QJsonObject root = jsonDoc.object();
auto installVal = root.value("install");
auto versionInfoVal = root.value("versionInfo");
if (!installVal.isObject() || !versionInfoVal.isObject())
return;
// read the forge version info
{
newVersion = OneSixVersion::fromJson(versionInfoVal.toObject());
if (!newVersion)
return;
}
QJsonObject installObj = installVal.toObject();
QString libraryName = installObj.value("path").toString();
internalPath = installObj.value("filePath").toString();
// where do we put the library? decode the mojang path
OneSixLibrary lib(libraryName);
lib.finalize();
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auto cacheentry = MMC->metacache()->resolveEntry("libraries", lib.storagePath());
finalPath = "libraries/" + lib.storagePath();
if (!ensureFilePathExists(finalPath))
return;
if (!zip.setCurrentFile(internalPath))
return;
if (!file.open(QIODevice::ReadOnly))
return;
{
QByteArray data = file.readAll();
// extract file
QSaveFile extraction(finalPath);
if (!extraction.open(QIODevice::WriteOnly))
return;
if (extraction.write(data) != data.size())
return;
if (!extraction.commit())
return;
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QCryptographicHash md5sum(QCryptographicHash::Md5);
md5sum.addData(data);
cacheentry->stale = false;
cacheentry->md5sum = md5sum.result().toHex().constData();
MMC->metacache()->updateEntry(cacheentry);
}
file.close();
m_forge_version = newVersion;
realVersionId = m_forge_version->id = installObj.value("minecraft").toString();
}
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bool ForgeInstaller::apply(std::shared_ptr<OneSixVersion> to)
{
if (!m_forge_version)
return false;
to->externalUpdateStart();
int sliding_insert_window = 0;
{
// for each library in the version we are adding (except for the blacklisted)
QSet<QString> blacklist{"lwjgl", "lwjgl_util", "lwjgl-platform"};
for (auto lib : m_forge_version->libraries)
{
QString libName = lib->name();
// WARNING: This could actually break.
// if this is the actual forge lib, set an absolute url for the download
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if (libName.contains("minecraftforge"))
{
lib->setAbsoluteUrl(m_universal_url);
}
else if (libName.contains("scala"))
{
lib->setHint("forge-pack-xz");
}
if (blacklist.contains(libName))
continue;
// find an entry that matches this one
bool found = false;
for (auto tolib : to->libraries)
{
if (tolib->name() != libName)
continue;
found = true;
// replace lib
tolib = lib;
break;
}
if (!found)
{
// add lib
to->libraries.insert(sliding_insert_window, lib);
sliding_insert_window++;
}
}
to->mainClass = m_forge_version->mainClass;
to->minecraftArguments = m_forge_version->minecraftArguments;
to->processArguments = m_forge_version->processArguments;
}
to->externalUpdateFinish();
return to->toOriginalFile();
}