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 *file, char *extData, char *c) {
  50         FILE *fLog = NULL;
  51     char filename[FILE_PATH_SIZE] = {0x00};
  52     int len = 0;
  53
  54     len = strlen(file);
  55     if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
  56     memcpy(filename, file, len);
  57
  58         fLog = fopen(filename, "a");
  59         if (!fLog) {
  60                 printf("Could not append log file %s", filename);
  61                 return;
  62         }
  63
  64         fprintf(fLog, "%s", extData);
  65         fprintf(fLog, "%s\n", c);
  66         fclose(fLog);
  67 }
  68
  69 void AddLogHex(char *fileName, char *extData, const uint8_t * data, const size_t len){
  70         AddLogLine(fileName, extData, sprint_hex(data, len));
  71 }
  72
  73 void AddLogUint64(char *fileName, char *extData, const uint64_t data) {
  74   char buf[100] = {0};
  75         sprintf(buf, "%x%x", (unsigned int)((data & 0xFFFFFFFF00000000) >> 32), (unsigned int)(data & 0xFFFFFFFF));
  76         AddLogLine(fileName, extData, buf);
  77 }
  78
  79 void AddLogCurrentDT(char *fileName) {
  80         char buff[20];
  81         struct tm *curTime;
  82
  83         time_t now = time(0);
  84         curTime = gmtime(&now);
  85
  86         strftime (buff, sizeof(buff), "%Y-%m-%d %H:%M:%S", curTime);
  87         AddLogLine(fileName, "\nanticollision: ", buff);
  88 }
  89
  90 void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount) {
  91         char * fnameptr = fileName;
  92         memset(fileName, 0x00, 200);
  93
  94         for (int j = 0; j < byteCount; j++, fnameptr += 2)
  95                 sprintf(fnameptr, "%02x", uid[j]);
  96         sprintf(fnameptr, "%s", ext);
  97 }
  98
  99 // printing and converting functions
 100
 101 void print_hex(const uint8_t * data, const size_t len)
 102 {
 103         size_t i;
 104
 105         for (i=0; i < len; i++)
 106                 printf("%02x ", data[i]);
 107
 108         printf("\n");
 109 }
 110
 111 char * sprint_hex(const uint8_t * data, const size_t len) {
 112
 113         int maxLen = ( len > 1024/3) ? 1024/3 : len;
 114         static char buf[1024];
 115         memset(buf, 0x00, 1024);
 116         char * tmp = buf;
 117         size_t i;
 118
 119         for (i=0; i < maxLen; ++i, tmp += 3)
 120                 sprintf(tmp, "%02x ", data[i]);
 121
 122         return buf;
 123 }
 124
 125 char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) {
 126
 127         int maxLen = ( len > 1024) ? 1024 : len;
 128         static char buf[1024];
 129         memset(buf, 0x00, 1024);
 130         char *tmp = buf;
 131
 132         for (size_t i=0; i < maxLen; ++i){
 133                 sprintf(tmp++, "%u", data[i]);
 134                 if (breaks > 0 && !((i+1) % breaks))
 135                         sprintf(tmp++, "%s","\n");
 136         }
 137
 138         return buf;
 139 }
 140
 141 char *sprint_bin(const uint8_t *data, const size_t len) {
 142         return sprint_bin_break(data, len, 0);
 143 }
 144 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
 145 {
 146         while (len--) {
 147                 dest[len] = (uint8_t) n;
 148                 n >>= 8;
 149         }
 150 }
 151
 152 uint64_t bytes_to_num(uint8_t* src, size_t len)
 153 {
 154         uint64_t num = 0;
 155         while (len--)
 156         {
 157                 num = (num << 8) | (*src);
 158                 src++;
 159         }
 160         return num;
 161 }
 162
 163 // aa,bb,cc,dd,ee,ff,gg,hh, ii,jj,kk,ll,mm,nn,oo,pp
 164 // to
 165 // hh,gg,ff,ee,dd,cc,bb,aa, pp,oo,nn,mm,ll,kk,jj,ii
 166 // up to 64 bytes or 512 bits
 167 uint8_t *SwapEndian64(uint8_t *src, size_t len){
 168         static uint8_t temp[64]={0};
 169         for (uint8_t block=0; block < (uint8_t)len/8; block++){
 170                 for (size_t i = 0; i < 8; i++){
 171                         temp[i+(8*block)] = src[(7-i)+(8*block)];
 172                 }
 173         }
 174         return temp;
 175 }
 176
 177 //assumes little endian
 178 char * printBits(size_t const size, void const * const ptr)
 179 {
 180     unsigned char *b = (unsigned char*) ptr;
 181     unsigned char byte;
 182         static char buf[1024];
 183         char * tmp = buf;
 184     int i, j;
 185
 186     for (i=size-1;i>=0;i--)
 187     {
 188         for (j=7;j>=0;j--)
 189         {
 190             byte = b[i] & (1<<j);
 191             byte >>= j;
 192             sprintf(tmp, "%u", byte);
 193                         tmp++;
 194         }
 195     }
 196         return buf;
 197 }
 198
 199 //  -------------------------------------------------------------------------
 200 //  string parameters lib
 201 //  -------------------------------------------------------------------------
 202
 203 //  -------------------------------------------------------------------------
 204 //  line     - param line
 205 //  bg, en   - symbol numbers in param line of beginning an ending parameter
 206 //  paramnum - param number (from 0)
 207 //  -------------------------------------------------------------------------
 208 int param_getptr(const char *line, int *bg, int *en, int paramnum)
 209 {
 210         int i;
 211         int len = strlen(line);
 212
 213         *bg = 0;
 214         *en = 0;
 215
 216   // skip spaces
 217         while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++;
 218         if (*bg >= len) {
 219                 return 1;
 220         }
 221
 222         for (i = 0; i < paramnum; i++) {
 223                 while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++;
 224                 while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++;
 225
 226                 if (line[*bg] == '\0') return 1;
 227         }
 228
 229         *en = *bg;
 230         while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++;
 231
 232         (*en)--;
 233
 234         return 0;
 235 }
 236
 237
 238 char param_getchar(const char *line, int paramnum)
 239 {
 240         int bg, en;
 241
 242         if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
 243
 244         return line[bg];
 245 }
 246
 247 uint8_t param_get8(const char *line, int paramnum)
 248 {
 249         return param_get8ex(line, paramnum, 10, 0);
 250 }
 251
 252 /**
 253  * @brief Reads a decimal integer (actually, 0-254, not 255)
 254  * @param line
 255  * @param paramnum
 256  * @return -1 if error
 257  */
 258 uint8_t param_getdec(const char *line, int paramnum, uint8_t *destination)
 259 {
 260         uint8_t val =  param_get8ex(line, paramnum, 255, 10);
 261         if( (int8_t) val == -1) return 1;
 262         (*destination) = val;
 263         return 0;
 264 }
 265 /**
 266  * @brief Checks if param is decimal
 267  * @param line
 268  * @param paramnum
 269  * @return
 270  */
 271 uint8_t param_isdec(const char *line, int paramnum)
 272 {
 273         int bg, en;
 274         //TODO, check more thorougly
 275         if (!param_getptr(line, &bg, &en, paramnum)) return 1;
 276                 //              return strtoul(&line[bg], NULL, 10) & 0xff;
 277
 278         return 0;
 279 }
 280
 281 uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base)
 282 {
 283         int bg, en;
 284
 285         if (!param_getptr(line, &bg, &en, paramnum))
 286                 return strtoul(&line[bg], NULL, base) & 0xff;
 287         else
 288                 return deflt;
 289 }
 290
 291 uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base)
 292 {
 293         int bg, en;
 294
 295         if (!param_getptr(line, &bg, &en, paramnum))
 296                 return strtoul(&line[bg], NULL, base);
 297         else
 298                 return deflt;
 299 }
 300
 301 uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
 302 {
 303         int bg, en;
 304
 305         if (!param_getptr(line, &bg, &en, paramnum))
 306                 return strtoull(&line[bg], NULL, base);
 307         else
 308                 return deflt;
 309
 310         return 0;
 311 }
 312
 313 int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
 314 {
 315         int bg, en, temp, i;
 316
 317         if (hexcnt % 2)
 318                 return 1;
 319
 320         if (param_getptr(line, &bg, &en, paramnum)) return 1;
 321
 322         if (en - bg + 1 != hexcnt)
 323                 return 1;
 324
 325         for(i = 0; i < hexcnt; i += 2) {
 326                 if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) )   return 1;
 327
 328                 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
 329                 data[i / 2] = temp & 0xff;
 330         }
 331
 332         return 0;
 333 }
 334
 335 int param_getstr(const char *line, int paramnum, char * str)
 336 {
 337         int bg, en;
 338
 339         if (param_getptr(line, &bg, &en, paramnum)) return 0;
 340
 341         memcpy(str, line + bg, en - bg + 1);
 342         str[en - bg + 1] = 0;
 343
 344         return en - bg + 1;
 345 }
 346
 347 /*
 348 The following methods comes from Rfidler sourcecode.
 349 https://github.com/ApertureLabsLtd/RFIDler/blob/master/firmware/Pic32/RFIDler.X/src/
 350 */
 351
 352 // convert hex to sequence of 0/1 bit values
 353 // returns number of bits converted
 354 int hextobinarray(char *target, char *source)
 355 {
 356     int length, i, count= 0;
 357     char x;
 358
 359     length = strlen(source);
 360     // process 4 bits (1 hex digit) at a time
 361     while(length--)
 362     {
 363         x= *(source++);
 364         // capitalize
 365         if (x >= 'a' && x <= 'f')
 366             x -= 32;
 367         // convert to numeric value
 368         if (x >= '0' && x <= '9')
 369             x -= '0';
 370         else if (x >= 'A' && x <= 'F')
 371             x -= 'A' - 10;
 372         else
 373             return 0;
 374         // output
 375         for(i= 0 ; i < 4 ; ++i, ++count)
 376             *(target++)= (x >> (3 - i)) & 1;
 377     }
 378
 379     return count;
 380 }
 381
 382 // convert hex to human readable binary string
 383 int hextobinstring(char *target, char *source)
 384 {
 385     int length;
 386
 387     if(!(length= hextobinarray(target, source)))
 388         return 0;
 389     binarraytobinstring(target, target, length);
 390     return length;
 391 }
 392
 393 // convert binary array of 0x00/0x01 values to hex (safe to do in place as target will always be shorter than source)
 394 // return number of bits converted
 395 int binarraytohex(char *target, char *source, int length)
 396 {
 397     unsigned char i, x;
 398     int j = length;
 399
 400     if(j % 4)
 401         return 0;
 402
 403     while(j)
 404     {
 405         for(i= x= 0 ; i < 4 ; ++i)
 406             x +=  ( source[i] << (3 - i));
 407         sprintf(target,"%X", x);
 408         ++target;
 409         source += 4;
 410         j -= 4;
 411     }
 412     return length;
 413 }
 414
 415 // convert binary array to human readable binary
 416 void binarraytobinstring(char *target, char *source,  int length)
 417 {
 418     int i;
 419
 420     for(i= 0 ; i < length ; ++i)
 421         *(target++)= *(source++) + '0';
 422     *target= '\0';
 423 }
 424
 425 // return parity bit required to match type
 426 uint8_t GetParity( char *bits, uint8_t type, int length)
 427 {
 428     int x;
 429
 430     for(x= 0 ; length > 0 ; --length)
 431         x += bits[length - 1];
 432     x %= 2;
 433
 434     return x ^ type;
 435 }
 436
 437 // add HID parity to binary array: EVEN prefix for 1st half of ID, ODD suffix for 2nd half
 438 void wiegand_add_parity(char *target, char *source, char length)
 439 {
 440     *(target++)= GetParity(source, EVEN, length / 2);
 441     memcpy(target, source, length);
 442     target += length;
 443     *(target)= GetParity(source + length / 2, ODD, length / 2);
 444 }