pollymc/logic/LegacyUpdate.cpp

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#include "LegacyUpdate.h"
#include "lists/LwjglVersionList.h"
#include "lists/MinecraftVersionList.h"
#include "BaseInstance.h"
#include "LegacyInstance.h"
#include "MultiMC.h"
#include "ModList.h"
#include <pathutils.h>
#include <quazip.h>
#include <quazipfile.h>
#include <JlCompress.h>
LegacyUpdate::LegacyUpdate ( BaseInstance* inst, QObject* parent ) : BaseUpdate ( inst, parent ) {}
void LegacyUpdate::executeTask()
{
lwjglStart();
}
void LegacyUpdate::lwjglStart()
{
LegacyInstance * inst = (LegacyInstance *) m_inst;
lwjglVersion = inst->lwjglVersion();
lwjglTargetPath = PathCombine("lwjgl", lwjglVersion );
lwjglNativesPath = PathCombine( lwjglTargetPath, "natives");
// if the 'done' file exists, we don't have to download this again
QFileInfo doneFile(PathCombine(lwjglTargetPath, "done"));
if(doneFile.exists())
{
jarStart();
return;
}
auto &list = LWJGLVersionList::get();
if(!list.isLoaded())
{
emitFailed("Too soon! Let the LWJGL list load :)");
return;
}
setStatus("Downloading new LWJGL.");
auto version = list.getVersion(lwjglVersion);
if(!version)
{
emitFailed("Game update failed: the selected LWJGL version is invalid.");
return;
}
QString url = version->url();
QUrl realUrl(url);
QString hostname = realUrl.host();
auto worker = MMC->qnam();
QNetworkRequest req(realUrl);
req.setRawHeader("Host", hostname.toLatin1());
req.setHeader(QNetworkRequest::UserAgentHeader, "Wget/1.14 (linux-gnu)");
QNetworkReply * rep = worker->get ( req );
m_reply = QSharedPointer<QNetworkReply> (rep, &QObject::deleteLater);
connect(rep, SIGNAL(downloadProgress(qint64,qint64)), SLOT(updateDownloadProgress(qint64,qint64)));
connect(worker, SIGNAL(finished(QNetworkReply*)), SLOT(lwjglFinished(QNetworkReply*)));
//connect(rep, SIGNAL(error(QNetworkReply::NetworkError)), SLOT(downloadError(QNetworkReply::NetworkError)));
}
void LegacyUpdate::lwjglFinished(QNetworkReply* reply)
{
if(m_reply != reply)
{
return;
}
if(reply->error() != QNetworkReply::NoError)
{
emitFailed( "Failed to download: "+
reply->errorString()+
"\nSometimes you have to wait a bit if you download many LWJGL versions in a row. YMMV");
return;
}
auto *worker = MMC->qnam();
//Here i check if there is a cookie for me in the reply and extract it
QList<QNetworkCookie> cookies = qvariant_cast<QList<QNetworkCookie>>(reply->header(QNetworkRequest::SetCookieHeader));
if(cookies.count() != 0)
{
//you must tell which cookie goes with which url
worker->cookieJar()->setCookiesFromUrl(cookies, QUrl("sourceforge.net"));
}
//here you can check for the 302 or whatever other header i need
QVariant newLoc = reply->header(QNetworkRequest::LocationHeader);
if(newLoc.isValid())
{
QString redirectedTo = reply->header(QNetworkRequest::LocationHeader).toString();
QUrl realUrl(redirectedTo);
QString hostname = realUrl.host();
QNetworkRequest req(redirectedTo);
req.setRawHeader("Host", hostname.toLatin1());
req.setHeader(QNetworkRequest::UserAgentHeader, "Wget/1.14 (linux-gnu)");
QNetworkReply * rep = worker->get(req);
connect(rep, SIGNAL(downloadProgress(qint64,qint64)), SLOT(updateDownloadProgress(qint64,qint64)));
m_reply = QSharedPointer<QNetworkReply> (rep, &QObject::deleteLater);
return;
}
QFile saveMe("lwjgl.zip");
saveMe.open(QIODevice::WriteOnly);
saveMe.write(m_reply->readAll());
saveMe.close();
setStatus("Installing new LWJGL...");
extractLwjgl();
jarStart();
}
void LegacyUpdate::extractLwjgl()
{
// make sure the directories are there
bool success = ensureFolderPathExists(lwjglNativesPath);
if(!success)
{
emitFailed("Failed to extract the lwjgl libs - error when creating required folders.");
return;
}
QuaZip zip("lwjgl.zip");
if(!zip.open(QuaZip::mdUnzip))
{
emitFailed("Failed to extract the lwjgl libs - not a valid archive.");
return;
}
// and now we are going to access files inside it
QuaZipFile file(&zip);
const QString jarNames[] = { "jinput.jar", "lwjgl_util.jar", "lwjgl.jar" };
for(bool more=zip.goToFirstFile(); more; more=zip.goToNextFile())
{
if(!file.open(QIODevice::ReadOnly))
{
zip.close();
emitFailed("Failed to extract the lwjgl libs - error while reading archive.");
return;
}
QuaZipFileInfo info;
QString name = file.getActualFileName();
if(name.endsWith('/'))
{
file.close();
continue;
}
QString destFileName;
// Look for the jars
for (int i = 0; i < 3; i++)
{
if (name.endsWith(jarNames[i]))
{
destFileName = PathCombine(lwjglTargetPath, jarNames[i]);
}
}
// Not found? look for the natives
if(destFileName.isEmpty())
{
#ifdef Q_OS_WIN32
QString nativesDir = "windows";
#else
#ifdef Q_OS_MAC
QString nativesDir = "macosx";
#else
QString nativesDir = "linux";
#endif
#endif
if (name.contains(nativesDir))
{
int lastSlash = name.lastIndexOf('/');
int lastBackSlash = name.lastIndexOf('/');
if(lastSlash != -1)
name = name.mid(lastSlash+1);
else if(lastBackSlash != -1)
name = name.mid(lastBackSlash+1);
destFileName = PathCombine(lwjglNativesPath, name);
}
}
// Now if destFileName is still empty, go to the next file.
if (!destFileName.isEmpty())
{
setStatus("Installing new LWJGL - Extracting " + name);
QFile output(destFileName);
output.open(QIODevice::WriteOnly);
output.write(file.readAll()); // FIXME: wste of memory!?
output.close();
}
file.close(); // do not forget to close!
}
zip.close();
m_reply.clear();
QFile doneFile(PathCombine(lwjglTargetPath, "done"));
doneFile.open(QIODevice::WriteOnly);
doneFile.write("done.");
doneFile.close();
}
void LegacyUpdate::lwjglFailed()
{
emitFailed("Bad stuff happened while trying to get the lwjgl libs...");
}
void LegacyUpdate::jarStart()
{
LegacyInstance * inst = (LegacyInstance *) m_inst;
if(!inst->shouldUpdate() || inst->shouldUseCustomBaseJar())
{
ModTheJar();
return;
}
setStatus("Checking for jar updates...");
// Make directories
QDir binDir(inst->binDir());
if (!binDir.exists() && !binDir.mkpath("."))
{
emitFailed("Failed to create bin folder.");
return;
}
// Build a list of URLs that will need to be downloaded.
setStatus("Downloading new minecraft.jar");
QString urlstr("http://s3.amazonaws.com/Minecraft.Download/versions/");
QString intended_version_id = inst->intendedVersionId();
urlstr += intended_version_id + "/" + intended_version_id + ".jar";
auto dljob = new DownloadJob("Minecraft.jar for version " + intended_version_id);
dljob->add(QUrl(urlstr), inst->defaultBaseJar());
legacyDownloadJob.reset();
connect(legacyDownloadJob.data(), SIGNAL(finished()), SLOT(jarFinished()));
connect(legacyDownloadJob.data(), SIGNAL(failed()), SLOT(jarFailed()));
connect(legacyDownloadJob.data(), SIGNAL(progress(qint64,qint64)), SLOT(updateDownloadProgress(qint64,qint64)));
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legacyDownloadJob->start();
}
void LegacyUpdate::jarFinished()
{
// process the jar
ModTheJar();
}
void LegacyUpdate::jarFailed()
{
// bad, bad
emitFailed("Failed to download the minecraft jar. Try again later.");
}
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bool LegacyUpdate::MergeZipFiles( QuaZip* into, QFileInfo from, QSet< QString >& contained, MetainfAction metainf )
{
setStatus("Installing mods - Adding " + from.fileName());
QuaZip modZip(from.filePath());
modZip.open(QuaZip::mdUnzip);
QuaZipFile fileInsideMod(&modZip);
QuaZipFile zipOutFile( into );
for(bool more=modZip.goToFirstFile(); more; more=modZip.goToNextFile())
{
QString filename = modZip.getCurrentFileName();
if(filename.contains("META-INF") && metainf == LegacyUpdate::IgnoreMetainf)
{
qDebug() << "Skipping META-INF " << filename << " from " << from.fileName();
continue;
}
if(contained.contains(filename))
{
qDebug() << "Skipping already contained file " << filename << " from " << from.fileName();
continue;
}
contained.insert(filename);
qDebug() << "Adding file " << filename << " from " << from.fileName();
if(!fileInsideMod.open(QIODevice::ReadOnly))
{
qDebug() << "Failed to open " << filename << " from " << from.fileName();
return false;
}
/*
QuaZipFileInfo old_info;
fileInsideMod.getFileInfo(&old_info);
*/
QuaZipNewInfo info_out(fileInsideMod.getActualFileName());
/*
info_out.externalAttr = old_info.externalAttr;
*/
if(!zipOutFile.open(QIODevice::WriteOnly, info_out))
{
qDebug() << "Failed to open " << filename << " in the jar";
fileInsideMod.close();
return false;
}
if(!JlCompress::copyData(fileInsideMod, zipOutFile))
{
zipOutFile.close();
fileInsideMod.close();
qDebug() << "Failed to copy data of " << filename << " into the jar";
return false;
}
zipOutFile.close();
fileInsideMod.close();
}
return true;
}
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void LegacyUpdate::ModTheJar()
{
LegacyInstance * inst = (LegacyInstance *) m_inst;
if(!inst->shouldRebuild())
{
emitSucceeded();
return;
}
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// Get the mod list
auto modList = inst->jarModList();
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QFileInfo runnableJar (inst->runnableJar());
QFileInfo baseJar (inst->baseJar());
bool base_is_custom = inst->shouldUseCustomBaseJar();
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// Nothing to do if there are no jar mods to install, no backup and just the mc jar
if(base_is_custom)
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{
// yes, this can happen if the instance only has the runnable jar and not the base jar
// it *could* be assumed that such an instance is vanilla, but that wouldn't be safe
// because that's not something mmc4 guarantees
if(runnableJar.isFile() && !baseJar.exists() && modList->empty())
{
inst->setShouldRebuild(false);
emitSucceeded();
return;
}
setStatus("Installing mods - backing up minecraft.jar...");
if (!baseJar.exists() && !QFile::copy(runnableJar.filePath(), baseJar.filePath()))
{
emitFailed("Failed to back up minecraft.jar");
return;
}
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}
if (!baseJar.exists())
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{
emitFailed("The base jar " + baseJar.filePath() + " does not exist");
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return;
}
if (runnableJar.exists() && !QFile::remove(runnableJar.filePath()))
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{
emitFailed("Failed to delete old minecraft.jar");
return;
}
//TaskStep(); // STEP 1
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setStatus("Installing mods - Opening minecraft.jar");
QuaZip zipOut(runnableJar.filePath());
if(!zipOut.open(QuaZip::mdCreate))
{
QFile::remove(runnableJar.filePath());
emitFailed("Failed to open the minecraft.jar for modding");
return;
}
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// Files already added to the jar.
// These files will be skipped.
QSet<QString> addedFiles;
// Modify the jar
setStatus("Installing mods - Adding mod files...");
for (int i = modList->size() - 1; i >= 0; i--)
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{
auto &mod = modList->operator[](i);
if (mod.type() == Mod::MOD_ZIPFILE)
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{
if(!MergeZipFiles(&zipOut, mod.filename(), addedFiles, LegacyUpdate::KeepMetainf))
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{
zipOut.close();
QFile::remove(runnableJar.filePath());
emitFailed("Failed to add " + mod.filename().fileName() + " to the jar.");
return;
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}
}
else if (mod.type() == Mod::MOD_SINGLEFILE)
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{
auto filename = mod.filename();
if(!JlCompress::compressFile(&zipOut, filename.absoluteFilePath(), filename.fileName()))
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{
zipOut.close();
QFile::remove(runnableJar.filePath());
emitFailed("Failed to add " + filename.fileName() + " to the jar");
return;
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}
addedFiles.insert(filename.fileName());
qDebug() << "Adding file " << filename.fileName() << " from " << filename.absoluteFilePath();
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}
else if (mod.type() == Mod::MOD_FOLDER)
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{
auto filename = mod.filename();
QString what_to_zip = filename.absoluteFilePath();
QDir dir(what_to_zip);
dir.cdUp();
QString parent_dir = dir.absolutePath();
if(!JlCompress::compressSubDir(&zipOut, what_to_zip, parent_dir, true, addedFiles))
{
zipOut.close();
QFile::remove(runnableJar.filePath());
emitFailed("Failed to add " + filename.fileName() + " to the jar");
return;
}
qDebug() << "Adding folder " << filename.fileName() << " from " << filename.absoluteFilePath();
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}
}
if(!MergeZipFiles(&zipOut, baseJar, addedFiles, LegacyUpdate::IgnoreMetainf))
{
zipOut.close();
QFile::remove(runnableJar.filePath());
emitFailed("Failed to insert minecraft.jar contents.");
return;
}
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// Recompress the jar
zipOut.close();
if(zipOut.getZipError()!=0)
{
QFile::remove(runnableJar.filePath());
emitFailed("Failed to finalize minecraft.jar!");
return;
}
inst->setShouldRebuild(false);
//inst->UpdateVersion(true);
emitSucceeded();
return;
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}