cvs.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 #if !defined(_WIN32)
  12 #define _POSIX_C_SOURCE 199309L                 // need nanosleep()
  13 #endif
  14
  15 #include "util.h"
  16
  17 #include <stdint.h>
  18 #include <string.h>
  19 #include <ctype.h>
  20 #include <stdlib.h>
  21 #include <stdio.h>
  22 #include <time.h>
  23 #include "data.h"
  24
  25 #define MAX_BIN_BREAK_LENGTH   (3072+384+1)
  26
  27 #ifndef _WIN32
  28 #include <termios.h>
  29 #include <sys/ioctl.h>
  30 #include <unistd.h>
  31
  32 int ukbhit(void)
  33 {
  34   int cnt = 0;
  35   int error;
  36   static struct termios Otty, Ntty;
  37
  38   if ( tcgetattr(STDIN_FILENO, &Otty) == -1 ) return -1;
  39   Ntty = Otty;
  40
  41   Ntty.c_iflag          = 0x0000;   // input mode
  42   Ntty.c_oflag          = 0x0000;   // output mode
  43   Ntty.c_lflag         &= ~ICANON;  // control mode = raw
  44   Ntty.c_cc[VMIN]       = 1;        // return if at least 1 character is in the queue
  45   Ntty.c_cc[VTIME]      = 0;        // no timeout. Wait forever
  46
  47   if (0 == (error = tcsetattr(STDIN_FILENO, TCSANOW, &Ntty))) {   // set new attributes
  48     error += ioctl(STDIN_FILENO, FIONREAD, &cnt);                 // get number of characters availabe
  49     error += tcsetattr(STDIN_FILENO, TCSANOW, &Otty);             // reset attributes
  50   }
  51
  52   return ( error == 0 ? cnt : -1 );
  53 }
  54
  55 #else
  56
  57 #include <conio.h>
  58 int ukbhit(void) {
  59         return kbhit();
  60 }
  61 #endif
  62
  63 // log files functions
  64 void AddLogLine(char *file, char *extData, char *c) {
  65         FILE *fLog = NULL;
  66     char filename[FILE_PATH_SIZE] = {0x00};
  67     int len = 0;
  68
  69     len = strlen(file);
  70     if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
  71     memcpy(filename, file, len);
  72
  73         fLog = fopen(filename, "a");
  74         if (!fLog) {
  75                 printf("Could not append log file %s", filename);
  76                 return;
  77         }
  78
  79         fprintf(fLog, "%s", extData);
  80         fprintf(fLog, "%s\n", c);
  81         fclose(fLog);
  82 }
  83
  84 void AddLogHex(char *fileName, char *extData, const uint8_t * data, const size_t len){
  85         AddLogLine(fileName, extData, sprint_hex(data, len));
  86 }
  87
  88 void AddLogUint64(char *fileName, char *extData, const uint64_t data) {
  89   char buf[100] = {0};
  90         sprintf(buf, "%x%x", (unsigned int)((data & 0xFFFFFFFF00000000) >> 32), (unsigned int)(data & 0xFFFFFFFF));
  91         AddLogLine(fileName, extData, buf);
  92 }
  93
  94 void AddLogCurrentDT(char *fileName) {
  95         char buff[20];
  96         struct tm *curTime;
  97
  98         time_t now = time(0);
  99         curTime = gmtime(&now);
 100
 101         strftime (buff, sizeof(buff), "%Y-%m-%d %H:%M:%S", curTime);
 102         AddLogLine(fileName, "\nanticollision: ", buff);
 103 }
 104
 105 void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount) {
 106         char * fnameptr = fileName;
 107         memset(fileName, 0x00, 200);
 108
 109         for (int j = 0; j < byteCount; j++, fnameptr += 2)
 110                 sprintf(fnameptr, "%02x", (unsigned int) uid[j]);
 111         sprintf(fnameptr, "%s", ext);
 112 }
 113
 114 // printing and converting functions
 115
 116 void print_hex(const uint8_t * data, const size_t len)
 117 {
 118         size_t i;
 119
 120         for (i=0; i < len; i++)
 121                 printf("%02x ", data[i]);
 122
 123         printf("\n");
 124 }
 125
 126 void print_hex_break(const uint8_t *data, const size_t len, uint8_t breaks) {
 127
 128         int rownum = 0;
 129         printf("[%02d] | ", rownum);
 130         for (int i = 0; i < len; ++i) {
 131
 132                 printf("%02X ", data[i]);
 133
 134                 // check if a line break is needed
 135                 if ( breaks > 0 && !((i+1) % breaks) && (i+1 < len) ) {
 136                         ++rownum;
 137                         printf("\n[%02d] | ", rownum);
 138                 }
 139         }
 140         printf("\n");
 141 }
 142
 143 char *sprint_hex(const uint8_t *data, const size_t len) {
 144
 145         int maxLen = ( len > 1024/3) ? 1024/3 : len;
 146         static char buf[1024];
 147         memset(buf, 0x00, 1024);
 148         char *tmp = buf;
 149         size_t i;
 150
 151         for (i=0; i < maxLen; ++i, tmp += 3)
 152                 sprintf(tmp, "%02x ", (unsigned int) data[i]);
 153
 154         return buf;
 155 }
 156
 157 char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) {
 158         // make sure we don't go beyond our char array memory
 159         int max_len;
 160         if (breaks==0)
 161                 max_len = ( len > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len;
 162         else
 163                 max_len = ( len+(len/breaks) > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len+(len/breaks);
 164
 165         static char buf[MAX_BIN_BREAK_LENGTH]; // 3072 + end of line characters if broken at 8 bits
 166         //clear memory
 167         memset(buf, 0x00, sizeof(buf));
 168         char *tmp = buf;
 169
 170         size_t in_index = 0;
 171         // loop through the out_index to make sure we don't go too far
 172         for (size_t out_index=0; out_index < max_len-1; out_index++) {
 173                 // set character - (should be binary but verify it isn't more than 1 digit)
 174                 if (data[in_index]<10)
 175                         sprintf(tmp++, "%u", (unsigned int) data[in_index]);
 176                 // check if a line break is needed and we have room to print it in our array
 177                 if ( (breaks > 0) && !((in_index+1) % breaks) && (out_index+1 != max_len) ) {
 178                         // increment and print line break
 179                         out_index++;
 180                         sprintf(tmp++, "%s","\n");
 181                 }
 182                 in_index++;
 183         }
 184
 185         return buf;
 186 }
 187
 188 char *sprint_bin(const uint8_t *data, const size_t len) {
 189         return sprint_bin_break(data, len, 0);
 190 }
 191
 192 char *sprint_hex_ascii(const uint8_t *data, const size_t len) {
 193         static char buf[1024];
 194         char *tmp = buf;
 195         memset(buf, 0x00, 1024);
 196         size_t max_len = (len > 1010) ? 1010 : len;
 197
 198         sprintf(tmp, "%s| ", sprint_hex(data, max_len) );
 199
 200         size_t i = 0;
 201         size_t pos = (max_len * 3)+2;
 202         while(i < max_len){
 203                 char c = data[i];
 204                 if ( (c < 32) || (c == 127))
 205                         c = '.';
 206                 sprintf(tmp+pos+i, "%c",  c);
 207                 ++i;
 208         }
 209         return buf;
 210 }
 211
 212 char *sprint_ascii(const uint8_t *data, const size_t len) {
 213         static char buf[1024];
 214         char *tmp = buf;
 215         memset(buf, 0x00, 1024);
 216         size_t max_len = (len > 1010) ? 1010 : len;
 217         size_t i = 0;
 218         while(i < max_len){
 219                 char c = data[i];
 220                 tmp[i] = ((c < 32) || (c == 127)) ? '.' : c;
 221                 ++i;
 222         }
 223         return buf;
 224 }
 225
 226 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
 227 {
 228         while (len--) {
 229                 dest[len] = (uint8_t) n;
 230                 n >>= 8;
 231         }
 232 }
 233
 234 uint64_t bytes_to_num(uint8_t* src, size_t len)
 235 {
 236         uint64_t num = 0;
 237         while (len--)
 238         {
 239                 num = (num << 8) | (*src);
 240                 src++;
 241         }
 242         return num;
 243 }
 244
 245 void num_to_bytebits(uint64_t   n, size_t len, uint8_t *dest) {
 246         while (len--) {
 247                 dest[len] = n & 1;
 248                 n >>= 1;
 249         }
 250 }
 251
 252 //least significant bit first
 253 void num_to_bytebitsLSBF(uint64_t n, size_t len, uint8_t *dest) {
 254         for(int i = 0 ; i < len ; ++i) {
 255                 dest[i] =  n & 1;
 256                 n >>= 1;
 257         }
 258 }
 259
 260 // Swap bit order on a uint32_t value.  Can be limited by nrbits just use say 8bits reversal
 261 // And clears the rest of the bits.
 262 uint32_t SwapBits(uint32_t value, int nrbits) {
 263         uint32_t newvalue = 0;
 264         for(int i = 0; i < nrbits; i++) {
 265                 newvalue ^= ((value >> i) & 1) << (nrbits - 1 - i);
 266         }
 267         return newvalue;
 268 }
 269
 270 // aa,bb,cc,dd,ee,ff,gg,hh, ii,jj,kk,ll,mm,nn,oo,pp
 271 // to
 272 // hh,gg,ff,ee,dd,cc,bb,aa, pp,oo,nn,mm,ll,kk,jj,ii
 273 // up to 64 bytes or 512 bits
 274 uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockSize){
 275         static uint8_t buf[64];
 276         memset(buf, 0x00, 64);
 277         uint8_t *tmp = buf;
 278         for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
 279                 for (size_t i = 0; i < blockSize; i++){
 280                         tmp[i+(blockSize*block)] = src[(blockSize-1-i)+(blockSize*block)];
 281                 }
 282         }
 283         return tmp;
 284 }
 285
 286 // takes a uint8_t src array, for len items and reverses the byte order in blocksizes (8,16,32,64),
 287 // returns: the dest array contains the reordered src array.
 288 void SwapEndian64ex(const uint8_t *src, const size_t len, const uint8_t blockSize, uint8_t *dest){
 289         for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
 290                 for (size_t i = 0; i < blockSize; i++){
 291                         dest[i+(blockSize*block)] = src[(blockSize-1-i)+(blockSize*block)];
 292                 }
 293         }
 294 }
 295
 296 //assumes little endian
 297 char * printBits(size_t const size, void const * const ptr)
 298 {
 299     unsigned char *b = (unsigned char*) ptr;
 300     unsigned char byte;
 301         static char buf[1024];
 302         char * tmp = buf;
 303     int i, j;
 304
 305     for (i=size-1;i>=0;i--)
 306     {
 307         for (j=7;j>=0;j--)
 308         {
 309             byte = b[i] & (1<<j);
 310             byte >>= j;
 311             sprintf(tmp, "%u", (unsigned int)byte);
 312                         tmp++;
 313         }
 314     }
 315         return buf;
 316 }
 317
 318 //  -------------------------------------------------------------------------
 319 //  string parameters lib
 320 //  -------------------------------------------------------------------------
 321
 322 //  -------------------------------------------------------------------------
 323 //  line     - param line
 324 //  bg, en   - symbol numbers in param line of beginning an ending parameter
 325 //  paramnum - param number (from 0)
 326 //  -------------------------------------------------------------------------
 327 int param_getptr(const char *line, int *bg, int *en, int paramnum)
 328 {
 329         int i;
 330         int len = strlen(line);
 331
 332         *bg = 0;
 333         *en = 0;
 334
 335   // skip spaces
 336         while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++;
 337         if (*bg >= len) {
 338                 return 1;
 339         }
 340
 341         for (i = 0; i < paramnum; i++) {
 342                 while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++;
 343                 while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++;
 344
 345                 if (line[*bg] == '\0') return 1;
 346         }
 347
 348         *en = *bg;
 349         while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++;
 350
 351         (*en)--;
 352
 353         return 0;
 354 }
 355
 356
 357 char param_getchar(const char *line, int paramnum)
 358 {
 359         int bg, en;
 360
 361         if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
 362
 363         return line[bg];
 364 }
 365
 366 uint8_t param_get8(const char *line, int paramnum)
 367 {
 368         return param_get8ex(line, paramnum, 0, 10);
 369 }
 370
 371 /**
 372  * @brief Reads a decimal integer (actually, 0-254, not 255)
 373  * @param line
 374  * @param paramnum
 375  * @return -1 if error
 376  */
 377 uint8_t param_getdec(const char *line, int paramnum, uint8_t *destination)
 378 {
 379         uint8_t val =  param_get8ex(line, paramnum, 255, 10);
 380         if( (int8_t) val == -1) return 1;
 381         (*destination) = val;
 382         return 0;
 383 }
 384 /**
 385  * @brief Checks if param is decimal
 386  * @param line
 387  * @param paramnum
 388  * @return
 389  */
 390 uint8_t param_isdec(const char *line, int paramnum)
 391 {
 392         int bg, en;
 393         //TODO, check more thorougly
 394         if (!param_getptr(line, &bg, &en, paramnum)) return 1;
 395                 //              return strtoul(&line[bg], NULL, 10) & 0xff;
 396
 397         return 0;
 398 }
 399
 400 uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base)
 401 {
 402         int bg, en;
 403
 404         if (!param_getptr(line, &bg, &en, paramnum))
 405                 return strtoul(&line[bg], NULL, base) & 0xff;
 406         else
 407                 return deflt;
 408 }
 409
 410 uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base)
 411 {
 412         int bg, en;
 413
 414         if (!param_getptr(line, &bg, &en, paramnum))
 415                 return strtoul(&line[bg], NULL, base);
 416         else
 417                 return deflt;
 418 }
 419
 420 uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
 421 {
 422         int bg, en;
 423
 424         if (!param_getptr(line, &bg, &en, paramnum))
 425                 return strtoull(&line[bg], NULL, base);
 426         else
 427                 return deflt;
 428 }
 429
 430 int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
 431 {
 432         int bg, en, temp, i;
 433
 434         if (hexcnt % 2)
 435                 return 1;
 436
 437         if (param_getptr(line, &bg, &en, paramnum)) return 1;
 438
 439         if (en - bg + 1 != hexcnt)
 440                 return 1;
 441
 442         for(i = 0; i < hexcnt; i += 2) {
 443                 if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) )   return 1;
 444
 445                 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
 446                 data[i / 2] = temp & 0xff;
 447         }
 448
 449         return 0;
 450 }
 451 int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *hexcnt)
 452 {
 453         int bg, en, temp, i;
 454
 455         //if (hexcnt % 2)
 456         //      return 1;
 457
 458         if (param_getptr(line, &bg, &en, paramnum)) return 1;
 459
 460         *hexcnt = en - bg + 1;
 461         if (*hexcnt % 2) //error if not complete hex bytes
 462                 return 1;
 463
 464         for(i = 0; i < *hexcnt; i += 2) {
 465                 if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) )   return 1;
 466
 467                 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
 468                 data[i / 2] = temp & 0xff;
 469         }
 470
 471         return 0;
 472 }
 473 int param_getstr(const char *line, int paramnum, char * str)
 474 {
 475         int bg, en;
 476
 477         if (param_getptr(line, &bg, &en, paramnum)) return 0;
 478
 479         memcpy(str, line + bg, en - bg + 1);
 480         str[en - bg + 1] = 0;
 481
 482         return en - bg + 1;
 483 }
 484
 485 /*
 486 The following methods comes from Rfidler sourcecode.
 487 https://github.com/ApertureLabsLtd/RFIDler/blob/master/firmware/Pic32/RFIDler.X/src/
 488 */
 489
 490 // convert hex to sequence of 0/1 bit values
 491 // returns number of bits converted
 492 int hextobinarray(char *target, char *source)
 493 {
 494     int length, i, count= 0;
 495     char x;
 496
 497     length = strlen(source);
 498     // process 4 bits (1 hex digit) at a time
 499     while(length--)
 500     {
 501         x= *(source++);
 502         // capitalize
 503         if (x >= 'a' && x <= 'f')
 504             x -= 32;
 505         // convert to numeric value
 506         if (x >= '0' && x <= '9')
 507             x -= '0';
 508         else if (x >= 'A' && x <= 'F')
 509             x -= 'A' - 10;
 510         else
 511             return 0;
 512         // output
 513         for(i= 0 ; i < 4 ; ++i, ++count)
 514             *(target++)= (x >> (3 - i)) & 1;
 515     }
 516
 517     return count;
 518 }
 519
 520 // convert hex to human readable binary string
 521 int hextobinstring(char *target, char *source)
 522 {
 523     int length;
 524
 525     if(!(length= hextobinarray(target, source)))
 526         return 0;
 527     binarraytobinstring(target, target, length);
 528     return length;
 529 }
 530
 531 // convert binary array of 0x00/0x01 values to hex (safe to do in place as target will always be shorter than source)
 532 // return number of bits converted
 533 int binarraytohex(char *target,char *source, int length)
 534 {
 535     unsigned char i, x;
 536     int j = length;
 537
 538     if(j % 4)
 539         return 0;
 540
 541     while(j)
 542     {
 543         for(i= x= 0 ; i < 4 ; ++i)
 544             x +=  ( source[i] << (3 - i));
 545         sprintf(target,"%X", (unsigned int)x);
 546         ++target;
 547         source += 4;
 548         j -= 4;
 549     }
 550     return length;
 551 }
 552
 553 // convert binary array to human readable binary
 554 void binarraytobinstring(char *target, char *source,  int length)
 555 {
 556     int i;
 557
 558     for(i= 0 ; i < length ; ++i)
 559         *(target++)= *(source++) + '0';
 560     *target= '\0';
 561 }
 562
 563 // return parity bit required to match type
 564 uint8_t GetParity( uint8_t *bits, uint8_t type, int length)
 565 {
 566     int x;
 567
 568     for(x= 0 ; length > 0 ; --length)
 569         x += bits[length - 1];
 570     x %= 2;
 571
 572     return x ^ type;
 573 }
 574
 575 // add HID parity to binary array: EVEN prefix for 1st half of ID, ODD suffix for 2nd half
 576 void wiegand_add_parity(uint8_t *target, uint8_t *source, uint8_t length)
 577 {
 578     *(target++)= GetParity(source, EVEN, length / 2);
 579     memcpy(target, source, length);
 580     target += length;
 581     *(target)= GetParity(source + length / 2, ODD, length / 2);
 582 }
 583
 584 // xor two arrays together for len items.  The dst array contains the new xored values.
 585 void xor(unsigned char *dst, unsigned char *src, size_t len) {
 586    for( ; len > 0; len--,dst++,src++)
 587        *dst ^= *src;
 588 }
 589
 590 int32_t le24toh (uint8_t data[3]) {
 591     return (data[2] << 16) | (data[1] << 8) | data[0];
 592 }
 593 uint32_t le32toh (uint8_t *data) {
 594         return (uint32_t)( (data[3]<<24) | (data[2]<<16) | (data[1]<<8) | data[0]);
 595 }
 596
 597 // RotateLeft - Ultralight, Desfire, works on byte level
 598 // 00-01-02  >> 01-02-00
 599 void rol(uint8_t *data, const size_t len){
 600     uint8_t first = data[0];
 601     for (size_t i = 0; i < len-1; i++) {
 602         data[i] = data[i+1];
 603     }
 604     data[len-1] = first;
 605 }
 606
 607
 608 // Replace unprintable characters with a dot in char buffer
 609 void clean_ascii(unsigned char *buf, size_t len) {
 610   for (size_t i = 0; i < len; i++) {
 611     if (!isprint(buf[i]))
 612       buf[i] = '.';
 613   }
 614 }
 615
 616
 617 // Timer functions
 618 #if !defined (_WIN32)
 619 #include <errno.h>
 620
 621 static void nsleep(uint64_t n) {
 622   struct timespec timeout;
 623   timeout.tv_sec = n/1000000000;
 624   timeout.tv_nsec = n%1000000000;
 625   while (nanosleep(&timeout, &timeout) && errno == EINTR);
 626 }
 627
 628 void msleep(uint32_t n) {
 629         nsleep(1000000 * n);
 630 }
 631
 632 #endif // _WIN32
 633
 634 // a milliseconds timer for performance measurement
 635 uint64_t msclock() {
 636 #if defined(_WIN32)
 637 #include <sys/types.h>
 638         struct _timeb t;
 639         if (_ftime_s(&t)) {
 640                 return 0;
 641         } else {
 642                 return 1000 * t.time + t.millitm;
 643         }
 644 #else
 645         struct timespec t;
 646         clock_gettime(CLOCK_MONOTONIC, &t);
 647         return (t.tv_sec * 1000 + t.tv_nsec / 1000000);
 648 #endif
 649 }