git.zerfleddert.de Git - proxmark3-svn/blob - client/util.c

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // utilities
   9 //-----------------------------------------------------------------------------
  10
  11 #include "util.h"
  12
  13 void print_hex(const uint8_t * data, const size_t len)
  14 {
  15         size_t i;
  16
  17         for (i=0; i < len; i++)
  18                 printf("%02x ", data[i]);
  19
  20         printf("\n");
  21 }
  22
  23 char * sprint_hex(const uint8_t * data, const size_t len) {
  24         static char buf[1024];
  25         char * tmp = buf;
  26         size_t i;
  27
  28         for (i=0; i < len && i < 1024/3; i++, tmp += 3)
  29                 sprintf(tmp, "%02x ", data[i]);
  30
  31         return buf;
  32 }
  33
  34 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
  35 {
  36         while (len--) {
  37                 dest[len] = (uint8_t) n;
  38                 n >>= 8;
  39         }
  40 }
  41
  42 uint64_t bytes_to_num(uint8_t* src, size_t len)
  43 {
  44         uint64_t num = 0;
  45         while (len--)
  46         {
  47                 num = (num << 8) | (*src);
  48                 src++;
  49         }
  50         return num;
  51 }