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 <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <ctype.h>
  15 #include "util.h"
  16
  17 #ifdef __linux__
  18 #include <termios.h>
  19 #include <sys/ioctl.h>
  20 int ukbhit(void)
  21 {
  22   int cnt = 0;
  23   int error;
  24   static struct termios Otty, Ntty;
  25
  26
  27   tcgetattr( 0, &Otty);
  28   Ntty = Otty;
  29
  30   Ntty.c_iflag          = 0;       /* input mode                */
  31   Ntty.c_oflag          = 0;       /* output mode               */
  32   Ntty.c_lflag         &= ~ICANON; /* raw mode */
  33   Ntty.c_cc[VMIN]       = CMIN;    /* minimum time to wait      */
  34   Ntty.c_cc[VTIME]      = CTIME;   /* minimum characters to wait for */
  35
  36   if (0 == (error = tcsetattr(0, TCSANOW, &Ntty))) {
  37     error += ioctl(0, FIONREAD, &cnt);
  38     error += tcsetattr(0, TCSANOW, &Otty);
  39   }
  40
  41   return ( error == 0 ? cnt : -1 );
  42 }
  43
  44 #else
  45 #include <conio.h>
  46 int ukbhit(void) {
  47         return kbhit();
  48 }
  49 #endif
  50
  51
  52 void print_hex(const uint8_t * data, const size_t len)
  53 {
  54         size_t i;
  55
  56         for (i=0; i < len; i++)
  57                 printf("%02x ", data[i]);
  58
  59         printf("\n");
  60 }
  61
  62 char * sprint_hex(const uint8_t * data, const size_t len) {
  63         static char buf[1024];
  64         char * tmp = buf;
  65         size_t i;
  66
  67         for (i=0; i < len && i < 1024/3; i++, tmp += 3)
  68                 sprintf(tmp, "%02x ", data[i]);
  69
  70         return buf;
  71 }
  72
  73 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
  74 {
  75         while (len--) {
  76                 dest[len] = (uint8_t) n;
  77                 n >>= 8;
  78         }
  79 }
  80
  81 uint64_t bytes_to_num(uint8_t* src, size_t len)
  82 {
  83         uint64_t num = 0;
  84         while (len--)
  85         {
  86                 num = (num << 8) | (*src);
  87                 src++;
  88         }
  89         return num;
  90 }
  91
  92 //  -------------------------------------------------------------------------
  93 //  line     - param line
  94 //  bg, en   - symbol numbers in param line of beginning an ending parameter
  95 //  paramnum - param number (from 0)
  96 //  -------------------------------------------------------------------------
  97 int param_getptr(const char *line, int *bg, int *en, int paramnum)
  98 {
  99         int i;
 100         int len = strlen(line);
 101
 102         *bg = 0;
 103         *en = 0;
 104
 105   // skip spaces
 106         while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++;
 107         if (*bg >= len) {
 108                 return 1;
 109         }
 110
 111         for (i = 0; i < paramnum; i++) {
 112                 while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++;
 113                 while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++;
 114
 115                 if (line[*bg] == '\0') return 1;
 116         }
 117
 118         *en = *bg;
 119         while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++;
 120
 121         (*en)--;
 122
 123         return 0;
 124 }
 125
 126 char param_getchar(const char *line, int paramnum)
 127 {
 128         int bg, en;
 129
 130         if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
 131
 132         return line[bg];
 133 }
 134
 135 uint8_t param_get8(const char *line, int paramnum)
 136 {
 137         return param_get8ex(line, paramnum, 10, 0);
 138 }
 139
 140 uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base)
 141 {
 142         int bg, en;
 143
 144         if (!param_getptr(line, &bg, &en, paramnum))
 145                 return strtol(&line[bg], NULL, base) & 0xff;
 146         else
 147                 return deflt;
 148 }
 149
 150 uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base)
 151 {
 152         int bg, en;
 153
 154         if (!param_getptr(line, &bg, &en, paramnum))
 155                 return strtol(&line[bg], NULL, base);
 156         else
 157                 return deflt;
 158 }
 159
 160 uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
 161 {
 162         int bg, en;
 163
 164         if (!param_getptr(line, &bg, &en, paramnum))
 165                 return strtol(&line[bg], NULL, base);
 166         else
 167                 return deflt;
 168
 169         return 0;
 170 }
 171
 172 int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
 173 {
 174         int bg, en, temp, i;
 175
 176         if (hexcnt % 2)
 177                 return 1;
 178
 179         if (param_getptr(line, &bg, &en, paramnum)) return 1;
 180
 181         if (en - bg + 1 != hexcnt)
 182                 return 1;
 183
 184         for(i = 0; i < hexcnt; i += 2) {
 185                 if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) )   return 1;
 186
 187                 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
 188                 data[i / 2] = temp & 0xff;
 189         }
 190
 191         return 0;
 192 }