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/********************************************************************
* Copyright (C) 2005, 2006 Piotr Pszczolkowski
*-------------------------------------------------------------------
* This file is part of BSCommander (Beesoft Commander).
*
* BSCommander 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.
*
* BSCommander 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 BsC; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*-------------------------------------------------------------------
* These algorithms are from book:
* John Viega and Matt Messier - "Secure Programming Cookbook for C and C++"
*******************************************************************/
#ifndef INCLUDED_WIPEFILE_H
#define INCLUDED_WIPEFILE_H
/*------- include files:
-------------------------------------------------------------------*/
#ifndef INCLUDED_QOBJECT_H
#include <qobject.h>
#define INCLUDED_QOBJECT_H
#endif // INCLUDED_QOBJECT_H
#ifndef INCLUDED_QSTRING_H
#include <qstring.h>
#define INCLUDED_QSTRING_H
#endif // INCLUDED_QSTRING_H
#ifndef INCLUDED_QDIALOG_H
#include <qdialog.h>
#define INCLUDED_QDIALOG_H
#endif // INCLUDED_QDIALOG_H
#ifndef INCLUDED_UNISTD_H
#include <unistd.h>
#define INCLUDED_UNISTD_H
#endif // INCLUDED_UNISTD_H
/*------- class declaration:
-------------------------------------------------------------------*/
class WipeFile : public QObject
{
Q_OBJECT
// ******* CONSTRUCTION / DESTRUCTION *******
public:
WipeFile( const QString& in_fpath, QDialog* in_dialog = 0 );
private:
WipeFile( const WipeFile& );
WipeFile& operator=( const WipeFile& );
// ******* TYPES *******
private:
enum {
WIPE_BUFSIZE = 4096,
SINGLE_PATS_SIZE = 16,
TRIPLE_PATS_ROWS = 6,
TRIPLE_PATS_COLS = 3
};
// ******* CONSTANTS *******
private:
static const unsigned char SinglePats[SINGLE_PATS_SIZE];
static const unsigned char TriplePats[TRIPLE_PATS_ROWS][TRIPLE_PATS_COLS];
static const QString WipeMsg;
// ******* MEMBERS *******
private:
const QString d_fpath;
QDialog* const d_dialog;
int d_devrand_fd;
int d_devrand_fd_noblock;
int d_devurand_fd;
unsigned char d_buffer[WIPE_BUFSIZE];
// ******* METHODS *******
public:
int wipe ();
private:
int fd_wipe ( int in_fd );
int pattern_pass ( int in_fd, unsigned char* in_buffer, size_t in_bufsize, size_t in_filesize );
int random_pass ( int in_fd, size_t in_nbytes );
int write_data ( int in_fd, const void* const in_buffer, size_t in_nbytes );
int make_fd_noblocking( int in_fd );
int rand_init ();
int rand ( unsigned char* out_buffer, size_t in_nbytes );
void progress ( int in_progress );
bool can_do ();
};
#endif // INCLUDED_WIPEFILE_H
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