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/*
* LinuxNetworkFunctions.cpp - implementation of LinuxNetworkFunctions class
*
* Copyright (c) 2017-2025 Tobias Junghans <tobydox@veyon.io>
*
* This file is part of Veyon - https://veyon.io
*
* This program 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 2 of the License, or (at your option) any later version.
*
* This program 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 this program (see COPYING); if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <QProcess>
#include "LinuxNetworkFunctions.h"
LinuxNetworkFunctions::PingResult LinuxNetworkFunctions::ping(const QString& hostAddress)
{
QProcess pingProcess;
pingProcess.start( QStringLiteral("ping"), { QStringLiteral("-c"), QStringLiteral("1"), QStringLiteral("-w"), QString::number( PingTimeout / 1000 ), hostAddress } );
if (pingProcess.waitForFinished(PingProcessTimeout))
{
switch (pingProcess.exitCode())
{
case 0: return PingResult::ReplyReceived;
case 1: return PingResult::TimedOut;
case 2: return PingResult::NameResolutionFailed;
default:
break;
}
}
return PingResult::Unknown;
}
bool LinuxNetworkFunctions::configureFirewallException( const QString& applicationPath, const QString& description, bool enabled )
{
Q_UNUSED(applicationPath)
Q_UNUSED(description)
Q_UNUSED(enabled)
return true;
}
bool LinuxNetworkFunctions::configureSocketKeepalive( Socket socket, bool enabled, int idleTime, int interval, int probes )
{
int optval;
socklen_t optlen = sizeof(optval);
auto fd = static_cast<int>( socket );
// Try to set the option active
optval = enabled ? 1 : 0;
if( setsockopt( fd, SOL_SOCKET, SO_KEEPALIVE, &optval, optlen ) < 0 )
{
vWarning() << "could not set SO_KEEPALIVE";
return false;
}
optval = std::max<int>( 1, idleTime / 1000 );
if( setsockopt( fd, IPPROTO_TCP, TCP_KEEPIDLE, &optval, optlen ) < 0 )
{
vWarning() << "could not set TCP_KEEPIDLE";
return false;
}
optval = std::max<int>( 1, interval / 1000 );
if( setsockopt( fd, IPPROTO_TCP, TCP_KEEPINTVL, &optval, optlen ) < 0 )
{
vWarning() << "could not set TCP_KEEPINTVL";
return false;
}
optval = probes;
if( setsockopt( fd, IPPROTO_TCP, TCP_KEEPCNT, &optval, optlen ) < 0 )
{
vWarning() << "could not set TCP_KEEPCNT";
return false;
}
return true;
}
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