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/******************************************************************************
*
* Copyright (C) 2002 Hugo PEREIRA <mailto: hugo.pereira@free.fr>
*
* This 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 software 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. If not, see <http://www.gnu.org/licenses/>.
*
*******************************************************************************/
#include "SshSocket.h"
#include "Debug.h"
#include <QElapsedTimer>
#if HAVE_SSH
#include <libssh2.h>
#endif
namespace Ssh
{
//_______________________________________________________________________
Socket::Socket( QObject* parent ):
BaseSocket( parent )
{}
//_______________________________________________________________________
void Socket::connectToHost( void* session, const QString& host, quint16 port )
{
Debug::Throw() << "Ssh::Socket::connectToHost - " << host << ":" << port << endl;
// store session, host and port
session_ = session;
host_ = host;
port_ = port;
// make sure timer is running
if( timer_.isActive() ) timer_.stop();
if( !_tryConnect() ) timer_.start( _latency(), this );
}
//_______________________________________________________________________
bool Socket::waitForConnected( int msecs )
{
// do nothing if already connected
if( isConnected() ) return true;
QElapsedTimer timer;
timer.start();
while( msecs < 0 || timer.elapsed() < msecs )
{ if( _tryConnect() ) return true; }
return false;
}
//_______________________________________________________________________
void Socket::timerEvent( QTimerEvent* event )
{
// check timer id
if( event->timerId() == timer_.timerId() )
{
#if HAVE_SSH
if( _tryConnect() ) timer_.stop();
return;
#else
timer_.stop();
setErrorString( "no ssh" );
return;
#endif
} else return BaseSocket::timerEvent( event );
}
//_______________________________________________________________________
bool Socket::_tryConnect()
{
if( isConnected() ) return true;
#if HAVE_SSH
auto session( static_cast<LIBSSH2_SESSION*>(session_) );
auto channel = libssh2_channel_direct_tcpip( session, qPrintable( host_ ), port_ );
if( channel )
{
_setChannel( channel, QIODevice::ReadWrite );
return true;
} else if( libssh2_session_last_errno( session ) != LIBSSH2_ERROR_EAGAIN ) {
timer_.stop();
char *errMsg(nullptr);
libssh2_session_last_error(session, &errMsg, NULL, 0);
setErrorString( tr( "error getting direct tcp channel: %1" ).arg( errMsg ) );
emit error( QAbstractSocket::ConnectionRefusedError );
return true;
}
return false;
#else
return true;
#endif
}
}
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