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 //  string parameters lib
  94 //  -------------------------------------------------------------------------
  95
  96 //  -------------------------------------------------------------------------
  97 //  line     - param line
  98 //  bg, en   - symbol numbers in param line of beginning an ending parameter
  99 //  paramnum - param number (from 0)
 100 //  -------------------------------------------------------------------------
 101 int param_getptr(const char *line, int *bg, int *en, int paramnum)
 102 {
 103         int i;
 104         int len = strlen(line);
 105
 106         *bg = 0;
 107         *en = 0;
 108
 109   // skip spaces
 110         while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++;
 111         if (*bg >= len) {
 112                 return 1;
 113         }
 114
 115         for (i = 0; i < paramnum; i++) {
 116                 while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++;
 117                 while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++;
 118
 119                 if (line[*bg] == '\0') return 1;
 120         }
 121
 122         *en = *bg;
 123         while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++;
 124
 125         (*en)--;
 126
 127         return 0;
 128 }
 129
 130 char param_getchar(const char *line, int paramnum)
 131 {
 132         int bg, en;
 133
 134         if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
 135
 136         return line[bg];
 137 }
 138
 139 uint8_t param_get8(const char *line, int paramnum)
 140 {
 141         return param_get8ex(line, paramnum, 10, 0);
 142 }
 143
 144 uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base)
 145 {
 146         int bg, en;
 147
 148         if (!param_getptr(line, &bg, &en, paramnum))
 149                 return strtol(&line[bg], NULL, base) & 0xff;
 150         else
 151                 return deflt;
 152 }
 153
 154 uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base)
 155 {
 156         int bg, en;
 157
 158         if (!param_getptr(line, &bg, &en, paramnum))
 159                 return strtol(&line[bg], NULL, base);
 160         else
 161                 return deflt;
 162 }
 163
 164 uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
 165 {
 166         int bg, en;
 167
 168         if (!param_getptr(line, &bg, &en, paramnum))
 169                 return strtol(&line[bg], NULL, base);
 170         else
 171                 return deflt;
 172
 173         return 0;
 174 }
 175
 176 int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
 177 {
 178         int bg, en, temp, i;
 179
 180         if (hexcnt % 2)
 181                 return 1;
 182
 183         if (param_getptr(line, &bg, &en, paramnum)) return 1;
 184
 185         if (en - bg + 1 != hexcnt)
 186                 return 1;
 187
 188         for(i = 0; i < hexcnt; i += 2) {
 189                 if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) )   return 1;
 190
 191                 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
 192                 data[i / 2] = temp & 0xff;
 193         }
 194
 195         return 0;
 196 }