FIX: coverity scan found some bugs in EMV code. These are the fixes to:

[proxmark3-svn] / armsrc / util.h

//-----------------------------------------------------------------------------
// Jonathan Westhues, Aug 2005
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
// Utility functions used in many places, not specific to any piece of code.
//-----------------------------------------------------------------------------

#ifndef __UTIL_H
#define __UTIL_H

#include "common.h"
#include "proxmark3.h"
#include "string.h"
#include "BigBuf.h"
#include "ticks.h"

#define BYTEx(x, n) (((x) >> (n * 8)) & 0xff )

#define LED_RED 1
#define LED_ORANGE 2
#define LED_GREEN 4
#define LED_RED2 8
#define BUTTON_HOLD 1
#define BUTTON_NO_CLICK 0
#define BUTTON_SINGLE_CLICK -1
#define BUTTON_DOUBLE_CLICK -2
#define BUTTON_ERROR -99

#ifndef BSWAP_16
# define BSWAP_16(x) ((( ((x) & 0xFF00 ) >> 8))| ( (((x) & 0x00FF) << 8)))
#endif
#ifndef BITMASK
# define BITMASK(X) (1 << (X))
#endif
#ifndef ARRAYLEN
# define ARRAYLEN(x) (sizeof(x)/sizeof((x)[0]))
#endif

size_t nbytes(size_t nbits);
uint32_t SwapBits(uint32_t value, int nrbits);
uint32_t reflect(uint32_t v, int b);
void num_to_bytes(uint64_t n, size_t len, uint8_t* dest);
uint64_t bytes_to_num(uint8_t* src, size_t len);
void rol(uint8_t *data, const size_t len);
void lsl (uint8_t *data, size_t len);
int32_t le24toh (uint8_t data[3]);
uint8_t hex2int(char hexchar);

void LED(int led, int ms);
void LEDsoff();
int BUTTON_CLICKED(int ms);
int BUTTON_HELD(int ms);
void FormatVersionInformation(char *dst, int len, const char *prefix, void *version_information);

#endif