void LegacyUpdate::jarStart()
{
LegacyInstance *inst = (LegacyInstance *)m_inst;
if (!inst->shouldUpdate() || inst->shouldUseCustomBaseJar())
{
ModTheJar();
return;
}
setStatus(tr("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(tr("Downloading new minecraft.jar ..."));
QString version_id = inst->intendedVersionId();
QString localPath = version_id + "/" + version_id + ".jar";
QString urlstr = "http://" + URLConstants::AWS_DOWNLOAD_VERSIONS + localPath;
auto dljob = new NetJob("Minecraft.jar for version " + version_id);
auto metacache = MMC->metacache();
auto entry = metacache->resolveEntry("versions", localPath);
dljob->addNetAction(CacheDownload::make(QUrl(urlstr), entry));
connect(dljob, SIGNAL(succeeded()), SLOT(jarFinished()));
connect(dljob, SIGNAL(failed()), SLOT(jarFailed()));
connect(dljob, SIGNAL(progress(qint64, qint64)), SIGNAL(progress(qint64, qint64)));
legacyDownloadJob.reset(dljob);
legacyDownloadJob->start();
}
void LegacyUpdate::ModTheJar()
{
LegacyInstance *inst = (LegacyInstance *)m_inst;
if (!inst->shouldRebuild())
{
emitSucceeded();
return;
}
// Get the mod list
auto modList = inst->jarModList();
QFileInfo runnableJar(inst->runnableJar());
QFileInfo baseJar(inst->baseJar());
bool base_is_custom = inst->shouldUseCustomBaseJar();
// Nothing to do if there are no jar mods to install, no backup and just the mc jar
if (base_is_custom)
{
// 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(tr("Installing mods: Backing up minecraft.jar ..."));
if (!baseJar.exists() && !QFile::copy(runnableJar.filePath(), baseJar.filePath()))
{
emitFailed("It seems both the active and base jar are gone. A fresh base jar will "
"be used on next run.");
inst->setShouldRebuild(true);
inst->setShouldUpdate(true);
inst->setShouldUseCustomBaseJar(false);
return;
}
}
if (!baseJar.exists())
{
emitFailed("The base jar " + baseJar.filePath() + " does not exist");
return;
}
if (runnableJar.exists() && !QFile::remove(runnableJar.filePath()))
{
emitFailed("Failed to delete old minecraft.jar");
return;
}
// TaskStep(); // STEP 1
setStatus(tr("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;
}
// Files already added to the jar.
// These files will be skipped.
QSet<QString> addedFiles;
// Modify the jar
setStatus(tr("Installing mods: Adding mod files..."));
for (int i = modList->size() - 1; i >= 0; i--)
{
auto &mod = modList->operator[](i);
// do not merge disabled mods.
if (!mod.enabled())
continue;
if (mod.type() == Mod::MOD_ZIPFILE)
{
if (!MergeZipFiles(&zipOut, mod.filename(), addedFiles, LegacyUpdate::KeepMetainf))
{
zipOut.close();
QFile::remove(runnableJar.filePath());
emitFailed("Failed to add " + mod.filename().fileName() + " to the jar.");
return;
}
}
else if (mod.type() == Mod::MOD_SINGLEFILE)
{
auto filename = mod.filename();
if (!JlCompress::compressFile(&zipOut, filename.absoluteFilePath(),
filename.fileName()))
{
zipOut.close();
QFile::remove(runnableJar.filePath());
emitFailed("Failed to add " + filename.fileName() + " to the jar");
return;
}
addedFiles.insert(filename.fileName());
QLOG_INFO() << "Adding file " << filename.fileName() << " from "
<< filename.absoluteFilePath();
}
else if (mod.type() == Mod::MOD_FOLDER)
{
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;
}
QLOG_INFO() << "Adding folder " << filename.fileName() << " from "
<< filename.absoluteFilePath();
}
}
if (!MergeZipFiles(&zipOut, baseJar, addedFiles, LegacyUpdate::IgnoreMetainf))
{
zipOut.close();
QFile::remove(runnableJar.filePath());
emitFailed("Failed to insert minecraft.jar contents.");
return;
}
// 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;
}
