calamares/src/libcalamares/network/Manager.cpp

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/* === This file is part of Calamares - <https://github.com/calamares> ===
*
* Copyright 2019, Adriaan de Groot <groot@kde.org>
*
* Calamares is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Calamares is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Calamares. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Manager.h"
#include <QEventLoop>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QNetworkRequest>
namespace CalamaresUtils
{
namespace Network
{
struct Manager::Private
{
std::unique_ptr< QNetworkAccessManager > m_nam;
QUrl m_hasInternetUrl;
bool m_hasInternet;
Private();
};
} // namespace Network
} // namespace CalamaresUtils
CalamaresUtils::Network::Manager::Private::Private()
: m_nam( std::make_unique< QNetworkAccessManager >() )
, m_hasInternet( false )
{
}
CalamaresUtils::Network::Manager::Manager()
: d( std::make_unique< Private >() )
{
}
CalamaresUtils::Network::Manager::~Manager() {}
CalamaresUtils::Network::Manager&
CalamaresUtils::Network::Manager::instance()
{
static auto* s_manager = new CalamaresUtils::Network::Manager();
return *s_manager;
}
bool
CalamaresUtils::Network::Manager::hasInternet()
{
return d->m_hasInternet;
}
bool
CalamaresUtils::Network::Manager::checkHasInternet()
{
bool hasInternet = d->m_nam->networkAccessible() == QNetworkAccessManager::Accessible;
if ( !hasInternet && ( d->m_nam->networkAccessible() == QNetworkAccessManager::UnknownAccessibility ) )
{
hasInternet = synchronousPing( d->m_hasInternetUrl );
}
d->m_hasInternet = hasInternet;
return hasInternet;
}
void
CalamaresUtils::Network::Manager::setCheckHasInternetUrl( const QUrl& url )
{
d->m_hasInternetUrl = url;
}
bool
CalamaresUtils::Network::Manager::synchronousPing( const QUrl& url )
{
if ( !url.isValid() )
{
return false;
}
QNetworkRequest req = QNetworkRequest( url );
QNetworkReply* reply = d->m_nam->get( req );
QEventLoop loop;
connect( reply, &QNetworkReply::finished, &loop, &QEventLoop::quit );
loop.exec();
return reply->bytesAvailable();
}