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 #ifndef _WIN32
  14 #include <termios.h>
  15 #include <sys/ioctl.h>
  16
  17 int ukbhit(void)
  18 {
  19   int cnt = 0;
  20   int error;
  21   static struct termios Otty, Ntty;
  22
  23
  24   tcgetattr( 0, &Otty);
  25   Ntty = Otty;
  26
  27   Ntty.c_iflag          = 0;       /* input mode                */
  28   Ntty.c_oflag          = 0;       /* output mode               */
  29   Ntty.c_lflag         &= ~ICANON; /* raw mode */
  30   Ntty.c_cc[VMIN]       = CMIN;    /* minimum time to wait      */
  31   Ntty.c_cc[VTIME]      = CTIME;   /* minimum characters to wait for */
  32
  33   if (0 == (error = tcsetattr(0, TCSANOW, &Ntty))) {
  34     error += ioctl(0, FIONREAD, &cnt);
  35     error += tcsetattr(0, TCSANOW, &Otty);
  36   }
  37
  38   return ( error == 0 ? cnt : -1 );
  39 }
  40
  41 #else
  42 #include <conio.h>
  43 int ukbhit(void) {
  44         return kbhit();
  45 }
  46 #endif
  47
  48 // log files functions
  49 void AddLogLine(char *fileName, char *extData, char *c) {
  50         FILE *fLog = NULL;
  51
  52         fLog = fopen(fileName, "a");
  53         if (!fLog) {
  54                 printf("Could not append log file %s", fileName);
  55                 return;
  56         }
  57
  58         fprintf(fLog, "%s", extData);
  59         fprintf(fLog, "%s\n", c);
  60         fclose(fLog);
  61 }
  62
  63 void AddLogHex(char *fileName, char *extData, const uint8_t * data, const size_t len){
  64         AddLogLine(fileName, extData, sprint_hex(data, len));
  65 }
  66
  67 void AddLogUint64(char *fileName, char *extData, const uint64_t data) {
  68   char buf[100] = {0};
  69         sprintf(buf, "%x%x", (unsigned int)((data & 0xFFFFFFFF00000000) >> 32), (unsigned int)(data & 0xFFFFFFFF));
  70         AddLogLine(fileName, extData, buf);
  71 }
  72
  73 void AddLogCurrentDT(char *fileName) {
  74         char buff[20];
  75         struct tm *curTime;
  76
  77         time_t now = time(0);
  78         curTime = gmtime(&now);
  79
  80         strftime (buff, sizeof(buff), "%Y-%m-%d %H:%M:%S", curTime);
  81         AddLogLine(fileName, "\nanticollision: ", buff);
  82 }
  83
  84 void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount) {
  85         char * fnameptr = fileName;
  86         memset(fileName, 0x00, 200);
  87
  88         for (int j = 0; j < byteCount; j++, fnameptr += 2)
  89                 sprintf(fnameptr, "%02x", uid[j]);
  90         sprintf(fnameptr, "%s", ext);
  91 }
  92
  93 // printing and converting functions
  94
  95 void print_hex(const uint8_t * data, const size_t len)
  96 {
  97         size_t i;
  98
  99         for (i=0; i < len; i++)
 100                 printf("%02x ", data[i]);
 101
 102         printf("\n");
 103 }
 104
 105 char * sprint_hex(const uint8_t * data, const size_t len) {
 106
 107         int maxLen = ( len > 1024/3) ? 1024/3 : len;
 108         static char buf[1024];
 109         char * tmp = buf;
 110         size_t i;
 111
 112         for (i=0; i < maxLen; ++i, tmp += 3)
 113                 sprintf(tmp, "%02x ", data[i]);
 114
 115         return buf;
 116 }
 117
 118 char * sprint_bin(const uint8_t * data, const size_t len) {
 119
 120         int maxLen = ( len > 1024) ? 1024 : len;
 121         static char buf[1024];
 122         char * tmp = buf;
 123         size_t i;
 124
 125         for (i=0; i < maxLen; ++i, ++tmp)
 126                 sprintf(tmp, "%u", data[i]);
 127
 128         return buf;
 129 }
 130
 131 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
 132 {
 133         while (len--) {
 134                 dest[len] = (uint8_t) n;
 135                 n >>= 8;
 136         }
 137 }
 138
 139 uint64_t bytes_to_num(uint8_t* src, size_t len)
 140 {
 141         uint64_t num = 0;
 142         while (len--)
 143         {
 144                 num = (num << 8) | (*src);
 145                 src++;
 146         }
 147         return num;
 148 }
 149
 150 //assumes little endian
 151 char * printBits(size_t const size, void const * const ptr)
 152 {
 153     unsigned char *b = (unsigned char*) ptr;
 154     unsigned char byte;
 155         static char buf[1024];
 156         char * tmp = buf;
 157     int i, j;
 158
 159     for (i=size-1;i>=0;i--)
 160     {
 161         for (j=7;j>=0;j--)
 162         {
 163             byte = b[i] & (1<<j);
 164             byte >>= j;
 165             sprintf(tmp, "%u", byte);
 166                         tmp++;
 167         }
 168     }
 169         return buf;
 170 }
 171
 172 //  -------------------------------------------------------------------------
 173 //  string parameters lib
 174 //  -------------------------------------------------------------------------
 175
 176 //  -------------------------------------------------------------------------
 177 //  line     - param line
 178 //  bg, en   - symbol numbers in param line of beginning an ending parameter
 179 //  paramnum - param number (from 0)
 180 //  -------------------------------------------------------------------------
 181 int param_getptr(const char *line, int *bg, int *en, int paramnum)
 182 {
 183         int i;
 184         int len = strlen(line);
 185
 186         *bg = 0;
 187         *en = 0;
 188
 189   // skip spaces
 190         while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++;
 191         if (*bg >= len) {
 192                 return 1;
 193         }
 194
 195         for (i = 0; i < paramnum; i++) {
 196                 while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++;
 197                 while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++;
 198
 199                 if (line[*bg] == '\0') return 1;
 200         }
 201
 202         *en = *bg;
 203         while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++;
 204
 205         (*en)--;
 206
 207         return 0;
 208 }
 209
 210 char param_getchar(const char *line, int paramnum)
 211 {
 212         int bg, en;
 213
 214         if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
 215
 216         return line[bg];
 217 }
 218
 219 uint8_t param_get8(const char *line, int paramnum)
 220 {
 221         return param_get8ex(line, paramnum, 10, 0);
 222 }
 223
 224 uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base)
 225 {
 226         int bg, en;
 227
 228         if (!param_getptr(line, &bg, &en, paramnum))
 229                 return strtoul(&line[bg], NULL, base) & 0xff;
 230         else
 231                 return deflt;
 232 }
 233
 234 uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base)
 235 {
 236         int bg, en;
 237
 238         if (!param_getptr(line, &bg, &en, paramnum))
 239                 return strtoul(&line[bg], NULL, base);
 240         else
 241                 return deflt;
 242 }
 243
 244 uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
 245 {
 246         int bg, en;
 247
 248         if (!param_getptr(line, &bg, &en, paramnum))
 249                 return strtoull(&line[bg], NULL, base);
 250         else
 251                 return deflt;
 252
 253         return 0;
 254 }
 255
 256 int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
 257 {
 258         int bg, en, temp, i;
 259
 260         if (hexcnt % 2)
 261                 return 1;
 262
 263         if (param_getptr(line, &bg, &en, paramnum)) return 1;
 264
 265         if (en - bg + 1 != hexcnt)
 266                 return 1;
 267
 268         for(i = 0; i < hexcnt; i += 2) {
 269                 if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) )   return 1;
 270
 271                 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
 272                 data[i / 2] = temp & 0xff;
 273         }
 274
 275         return 0;
 276 }
 277
 278 int param_getstr(const char *line, int paramnum, char * str)
 279 {
 280         int bg, en;
 281
 282         if (param_getptr(line, &bg, &en, paramnum)) return 0;
 283
 284         memcpy(str, line + bg, en - bg + 1);
 285         str[en - bg + 1] = 0;
 286
 287         return en - bg + 1;
 288 }