proxmark3/client/loclass/fileutils.h

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/*****************************************************************************
* WARNING
*
* THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
*
* USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
* PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
* AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
*
* THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
*
*****************************************************************************
*
* This file is part of loclass. It is a reconstructon of the cipher engine
* used in iClass, and RFID techology.
*
* The implementation is based on the work performed by
* Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
* Milosch Meriac in the paper "Dismantling IClass".
*
* Copyright (C) 2014 Martin Holst Swende
*
* This is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* This file 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 loclass. If not, see <http://www.gnu.org/licenses/>.
*
*
*
****************************************************************************/
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#ifndef FILEUTILS_H
#define FILEUTILS_H
#ifndef ON_DEVICE
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/**
* @brief Utility function to save data to a file. This method takes a preferred name, but if that
* file already exists, it tries with another name until it finds something suitable.
* E.g. dumpdata-15.txt
* @param preferredName
* @param suffix the file suffix. Leave out the ".".
* @param data The binary data to write to the file
* @param datalen the length of the data
* @return 0 for ok, 1 for failz
*/
int saveFile(const char *preferredName, const char *suffix, const void* data, size_t datalen);
/**
* @brief Utility function to save load binary data from a a file. This method takes a filename,
* Should only be used for fixed-size binary files
* @param fileName the name of the file
* @param data a buffer to place data in
* @param datalen the length of the data/data.
* @return
*/
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int fileExists(const char *filename);
#endif //ON_DEVICE
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/**
* Utility function to print to console. This is used consistently within the library instead
* of printf, but it actually only calls printf. The reason to have this method is to
*make it simple to plug this library into proxmark, which has this function already to
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* write also to a logfile. When doing so, just point this function to use PrintAndLog
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* @param fmt
*/
void prnlog(char *fmt, ...);
#endif // FILEUTILS_H