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177e21076b
When stuck in areas with really bad internet 5 seconds may not be enough, but making the timeout longer in general seems the wrong way to go. So keep the default 5 seconds but allow the user to override that with subsurface --cloud-timeout=NN Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
108 lines
3.5 KiB
C++
108 lines
3.5 KiB
C++
#include <QObject>
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#include <QTimer>
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#include <QNetworkAccessManager>
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#include <QNetworkReply>
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#include <QEventLoop>
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#include "pref.h"
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#include "helpers.h"
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#include "git-access.h"
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#include "checkcloudconnection.h"
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CheckCloudConnection::CheckCloudConnection(QObject *parent) :
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QObject(parent),
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reply(0)
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{
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}
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#define TEAPOT "/make-latte?number-of-shots=3"
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#define HTTP_I_AM_A_TEAPOT 418
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#define MILK "Linus does not like non-fat milk"
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bool CheckCloudConnection::checkServer()
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{
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if (verbose)
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fprintf(stderr, "Checking cloud connection...\n");
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QTimer timer;
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timer.setSingleShot(true);
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QEventLoop loop;
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QNetworkRequest request;
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request.setRawHeader("Accept", "text/plain");
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request.setRawHeader("User-Agent", getUserAgent().toUtf8());
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request.setRawHeader("Client-Id", getUUID().toUtf8());
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request.setUrl(QString(prefs.cloud_base_url) + TEAPOT);
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QNetworkAccessManager *mgr = new QNetworkAccessManager();
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reply = mgr->get(request);
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connect(&timer, &QTimer::timeout, &loop, &QEventLoop::quit);
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connect(reply, &QNetworkReply::finished, &loop, &QEventLoop::quit);
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connect(reply, &QNetworkReply::sslErrors, this, &CheckCloudConnection::sslErrors);
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for (int seconds = 1; seconds <= prefs.cloud_timeout; seconds++) {
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timer.start(1000); // wait the given number of seconds (default 5)
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loop.exec();
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if (timer.isActive()) {
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// didn't time out, did we get the right response?
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timer.stop();
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if (reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() == HTTP_I_AM_A_TEAPOT &&
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reply->readAll() == QByteArray(MILK)) {
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reply->deleteLater();
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mgr->deleteLater();
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if (verbose > 1)
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qWarning() << "Cloud storage: successfully checked connection to cloud server";
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git_storage_update_progress(false, "successfully checked cloud connection");
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return true;
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}
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} else if (seconds < prefs.cloud_timeout) {
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QString text = QString("waited %1 sec for cloud connetion").arg(seconds);
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git_storage_update_progress(false, qPrintable(text));
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} else {
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disconnect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
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reply->abort();
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}
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}
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git_storage_update_progress(false, "cloud connection failed");
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prefs.git_local_only = true;
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if (verbose)
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qDebug() << "connection test to cloud server failed" <<
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reply->error() << reply->errorString() <<
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reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() <<
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reply->readAll();
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reply->deleteLater();
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mgr->deleteLater();
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if (verbose)
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qWarning() << "Cloud storage: unable to connect to cloud server";
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return false;
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}
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void CheckCloudConnection::sslErrors(QList<QSslError> errorList)
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{
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if (verbose) {
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qDebug() << "Received error response trying to set up https connection with cloud storage backend:";
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Q_FOREACH (QSslError err, errorList) {
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qDebug() << err.errorString();
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}
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}
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QSslConfiguration conf = reply->sslConfiguration();
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QSslCertificate cert = conf.peerCertificate();
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QByteArray hexDigest = cert.digest().toHex();
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if (reply->url().toString().contains(prefs.cloud_base_url) &&
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hexDigest == "13ff44c62996cfa5cd69d6810675490e") {
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if (verbose)
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qDebug() << "Overriding SSL check as I recognize the certificate digest" << hexDigest;
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reply->ignoreSslErrors();
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} else {
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if (verbose)
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qDebug() << "got invalid SSL certificate with hex digest" << hexDigest;
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}
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}
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// helper to be used from C code
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extern "C" bool canReachCloudServer()
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{
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if (verbose)
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qWarning() << "Cloud storage: checking connection to cloud server";
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CheckCloudConnection *checker = new CheckCloudConnection;
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return checker->checkServer();
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}
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