moonlight-qt/app/settings/mappingfetcher.cpp
2021-03-02 18:14:15 -06:00

91 lines
3.4 KiB
C++

#include "mappingfetcher.h"
#include "path.h"
#include <QNetworkReply>
MappingFetcher::MappingFetcher(QObject *parent) :
QObject(parent),
m_Nam(this)
{
// Never communicate over HTTP
m_Nam.setStrictTransportSecurityEnabled(true);
// Allow HTTP redirects
m_Nam.setRedirectPolicy(QNetworkRequest::NoLessSafeRedirectPolicy);
connect(&m_Nam, &QNetworkAccessManager::finished,
this, &MappingFetcher::handleMappingListFetched);
}
void MappingFetcher::start()
{
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0) && QT_VERSION < QT_VERSION_CHECK(5, 15, 1) && !defined(QT_NO_BEARERMANAGEMENT)
// HACK: Set network accessibility to work around QTBUG-80947 (introduced in Qt 5.14.0 and fixed in Qt 5.15.1)
QT_WARNING_PUSH
QT_WARNING_DISABLE_DEPRECATED
m_Nam.setNetworkAccessible(QNetworkAccessManager::Accessible);
QT_WARNING_POP
#endif
QUrl url("https://moonlight-stream.org/SDL_GameControllerDB/gamecontrollerdb.txt");
QNetworkRequest request(url);
#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
request.setAttribute(QNetworkRequest::Http2AllowedAttribute, true);
#else
request.setAttribute(QNetworkRequest::HTTP2AllowedAttribute, true);
#endif
// Qt 5.12 introduced QNetworkRequest::IfModifiedSinceHeader. We _could_ implement it
// by hand (including QDateTime conversion to the correct string form) for earlier Qt
// versions, but that's a pain and this is just an optimization anyway. We'll do a bit
// of extra work on those legacy Qt versions by fetching the GCDB each time we launch.
#if QT_VERSION >= QT_VERSION_CHECK(5, 12, 0)
// Only download the file if it's newer than what we have
QFileInfo existingFileInfo = Path::getCacheFileInfo("gamecontrollerdb.txt");
if (existingFileInfo.exists()) {
// Make sure the cached file looks reasonable. It should have some data and
// the last modified time should not be in the future.
QDateTime lastModifiedTime = existingFileInfo.lastModified().toUTC();
if (existingFileInfo.size() > 0 && lastModifiedTime <= QDateTime::currentDateTimeUtc()) {
request.setHeader(QNetworkRequest::IfModifiedSinceHeader, existingFileInfo.lastModified().toUTC());
}
else {
Path::deleteCacheFile("gamecontrollerdb.txt");
}
}
#endif
// We'll get a callback when this is finished
m_Nam.get(request);
}
void MappingFetcher::handleMappingListFetched(QNetworkReply* reply)
{
Q_ASSERT(reply->isFinished());
if (reply->error() == QNetworkReply::NoError) {
// Queue the reply for deletion
reply->deleteLater();
// If we get a 304 back, Qt will happily just tell us our request was
// successful and let us try to write our empty response to disk. Check
// the status code directly to prevent this.
if (reply->attribute(QNetworkRequest::HttpStatusCodeAttribute) == 304) {
qInfo() << "Gamepad mappings are up to date";
}
else {
// Update the cached data on disk for next call to applyMappings()
QByteArray data = reply->readAll();
if (!data.isEmpty()) {
Path::writeCacheFile("gamecontrollerdb.txt", data);
}
qInfo() << "Downloaded updated gamepad mappings";
}
}
else {
qWarning() << "Failed to download updated gamepad mappings:" << reply->error();
reply->deleteLater();
}
}