client/emv/dump.c

   1 /*
   2  * libopenemv - a library to work with EMV family of smart cards
   3  * Copyright (C) 2015 Dmitry Eremin-Solenikov
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  */
  15
  16 #ifdef HAVE_CONFIG_H
  17 #include <config.h>
  18 #endif
  19
  20 #include "dump.h"
  21 #include <stdio.h>
  22 #include <string.h>
  23
  24 #define PRINT_INDENT(level)     {for (int i = 0; i < (level); i++) fprintf(f, "\t");}
  25
  26 void dump_buffer_simple(const unsigned char *ptr, size_t len, FILE *f)
  27 {
  28         int i;
  29
  30         if (!f)
  31                 f = stdout;
  32
  33         for (i = 0; i < len; i ++)
  34                 fprintf(f, "%s%02hhX", i ? " " : "", ptr[i]);
  35 }
  36
  37 void dump_buffer(const unsigned char *ptr, size_t len, FILE *f, int level)
  38 {
  39         int i, j;
  40
  41         if (!f)
  42                 f = stdout;
  43
  44         for (i = 0; i < len; i += 16) {
  45                 PRINT_INDENT(level);
  46                 fprintf(f, "\t%02x:", i);
  47                 for (j = 0; j < 16; j++) {
  48                         if (i + j < len)
  49                                 fprintf(f, " %02hhx", ptr[i + j]);
  50                         else
  51                                 fprintf(f, "   ");
  52                 }
  53                 fprintf(f, " |");
  54                 for (j = 0; j < 16 && i + j < len; j++) {
  55                         fprintf(f, "%c", (ptr[i+j] >= 0x20 && ptr[i+j] < 0x7f) ? ptr[i+j] : '.' );
  56                 }
  57                 fprintf(f, "\n");
  58         }
  59 }
  60