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/*
* SocketDevice.h - SocketDevice abstraction
*
* Copyright (c) 2010-2021 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.
*
*/
#pragma once
#include <QIODevice>
class SocketDevice : public QIODevice
{
Q_OBJECT
public:
enum SocketOperation
{
SocketOpRead,
SocketOpWrite
} ;
using Dispatcher = qint64 (*)(char *, const qint64, SocketOperation, void *);
explicit SocketDevice( Dispatcher dispatcher, void *user = nullptr, QObject* parent = nullptr ) :
QIODevice( parent ),
m_dispatcher( dispatcher ),
m_user( user )
{
open( ReadWrite | Unbuffered ); // Flawfinder: ignore
}
Dispatcher dispatcher()
{
return m_dispatcher;
}
void *user()
{
return m_user;
}
void setUser( void *user )
{
m_user = user;
}
qint64 read( char *buf, qint64 bytes ) // Flawfinder: ignore
{
return readData( buf, bytes );
}
qint64 write( const char *buf, qint64 bytes )
{
return writeData( buf, bytes );
}
protected:
qint64 readData( char *buf, qint64 bytes ) override
{
return m_dispatcher( buf, bytes, SocketOpRead, m_user );
}
qint64 writeData( const char *buf, qint64 bytes ) override
{
return m_dispatcher( const_cast<char *>( buf ), bytes,
SocketOpWrite, m_user );
}
private:
Dispatcher m_dispatcher;
void * m_user;
} ;
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