]> cvs.zerfleddert.de Git - proxmark3-svn/blob - client/util.c
eef97e2abc7d584f0a2b77b7ace367844151a3ff
[proxmark3-svn] / 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 #include <stdint.h>
14 #include <string.h>
15 #include <ctype.h>
16 #include <stdlib.h>
17 #include <stdio.h>
18 #include <time.h>
19 #include <stdarg.h>
20
21 #ifdef _WIN32
22 #include <windows.h>
23 #endif
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 char getch(void)
56 {
57 char c;
58 int error;
59 struct termios Otty, Ntty;
60 if ( tcgetattr(STDIN_FILENO, &Otty) == -1 ) return -1;
61 Ntty = Otty;
62 Ntty.c_lflag &= ~ICANON; /* disable buffered i/o */
63 if (0 == (error = tcsetattr(STDIN_FILENO, TCSANOW, &Ntty))) { // set new attributes
64 c = getchar();
65 error += tcsetattr(STDIN_FILENO, TCSANOW, &Otty); // reset attributes
66 }
67 return ( error == 0 ? c : -1 );
68 }
69
70 #else // _WIN32
71
72 #include <conio.h>
73 int ukbhit(void) {
74 return kbhit();
75 }
76 #endif
77
78 // log files functions
79 void AddLogLine(char *file, char *extData, char *c) {
80 FILE *fLog = NULL;
81 char filename[FILE_PATH_SIZE] = {0x00};
82 int len = 0;
83
84 len = strlen(file);
85 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
86 memcpy(filename, file, len);
87
88 fLog = fopen(filename, "a");
89 if (!fLog) {
90 printf("Could not append log file %s", filename);
91 return;
92 }
93
94 fprintf(fLog, "%s", extData);
95 fprintf(fLog, "%s\n", c);
96 fclose(fLog);
97 }
98
99 void AddLogHex(char *fileName, char *extData, const uint8_t * data, const size_t len){
100 AddLogLine(fileName, extData, sprint_hex(data, len));
101 }
102
103 void AddLogUint64(char *fileName, char *extData, const uint64_t data) {
104 char buf[100] = {0};
105 sprintf(buf, "%x%x", (unsigned int)((data & 0xFFFFFFFF00000000) >> 32), (unsigned int)(data & 0xFFFFFFFF));
106 AddLogLine(fileName, extData, buf);
107 }
108
109 void AddLogCurrentDT(char *fileName) {
110 char buff[20];
111 struct tm *curTime;
112
113 time_t now = time(0);
114 curTime = gmtime(&now);
115
116 strftime (buff, sizeof(buff), "%Y-%m-%d %H:%M:%S", curTime);
117 AddLogLine(fileName, "\nanticollision: ", buff);
118 }
119
120 void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount) {
121 char * fnameptr = fileName;
122 memset(fileName, 0x00, 200);
123
124 for (int j = 0; j < byteCount; j++, fnameptr += 2)
125 sprintf(fnameptr, "%02x", (unsigned int) uid[j]);
126 sprintf(fnameptr, "%s", ext);
127 }
128
129 // fill buffer from structure [{uint8_t data, size_t length},...]
130 int FillBuffer(uint8_t *data, size_t maxDataLength, size_t *dataLength, ...) {
131 *dataLength = 0;
132 va_list valist;
133 va_start(valist, dataLength);
134
135 uint8_t *vdata = NULL;
136 size_t vlength = 0;
137 do{
138 vdata = va_arg(valist, uint8_t *);
139 if (!vdata)
140 break;
141
142 vlength = va_arg(valist, size_t);
143 if (*dataLength + vlength > maxDataLength) {
144 va_end(valist);
145 return 1;
146 }
147
148 memcpy(&data[*dataLength], vdata, vlength);
149 *dataLength += vlength;
150
151 } while (vdata);
152
153 va_end(valist);
154
155 return 0;
156 }
157
158 bool CheckStringIsHEXValue(const char *value) {
159 for (int i = 0; i < strlen(value); i++)
160 if (!isxdigit(value[i]))
161 return false;
162
163 if (strlen(value) % 2)
164 return false;
165
166 return true;
167 }
168
169 void hex_to_buffer(const uint8_t *buf, const uint8_t *hex_data, const size_t hex_len, const size_t hex_max_len,
170 const size_t min_str_len, const size_t spaces_between, bool uppercase) {
171
172 char *tmp = (char *)buf;
173 size_t i;
174 memset(tmp, 0x00, hex_max_len);
175
176 int maxLen = ( hex_len > hex_max_len) ? hex_max_len : hex_len;
177
178 for (i = 0; i < maxLen; ++i, tmp += 2 + spaces_between) {
179 sprintf(tmp, (uppercase) ? "%02X" : "%02x", (unsigned int) hex_data[i]);
180
181 for (int j = 0; j < spaces_between; j++)
182 sprintf(tmp + 2 + j, " ");
183 }
184
185 i *= (2 + spaces_between);
186 int minStrLen = min_str_len > i ? min_str_len : 0;
187 if (minStrLen > hex_max_len)
188 minStrLen = hex_max_len;
189 for(; i < minStrLen; i++, tmp += 1)
190 sprintf(tmp, " ");
191
192 return;
193 }
194
195 // printing and converting functions
196
197 char *sprint_hex(const uint8_t *data, const size_t len) {
198 static char buf[4097] = {0};
199
200 hex_to_buffer((uint8_t *)buf, data, len, sizeof(buf) - 1, 0, 1, false);
201
202 return buf;
203 }
204
205 char *sprint_hex_inrow_ex(const uint8_t *data, const size_t len, const size_t min_str_len) {
206 static char buf[4097] = {0};
207
208 hex_to_buffer((uint8_t *)buf, data, len, sizeof(buf) - 1, min_str_len, 0, false);
209
210 return buf;
211 }
212
213 char *sprint_hex_inrow(const uint8_t *data, const size_t len) {
214 return sprint_hex_inrow_ex(data, len, 0);
215 }
216
217 char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) {
218 // make sure we don't go beyond our char array memory
219 int max_len;
220 if (breaks==0)
221 max_len = ( len > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len;
222 else
223 max_len = ( len+(len/breaks) > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len+(len/breaks);
224
225 static char buf[MAX_BIN_BREAK_LENGTH]; // 3072 + end of line characters if broken at 8 bits
226 //clear memory
227 memset(buf, 0x00, sizeof(buf));
228 char *tmp = buf;
229
230 size_t in_index = 0;
231 // loop through the out_index to make sure we don't go too far
232 for (size_t out_index=0; out_index < max_len; out_index++) {
233 // set character - (should be binary but verify it isn't more than 1 digit)
234 if (data[in_index]<10)
235 sprintf(tmp++, "%u", (unsigned int) data[in_index]);
236 // check if a line break is needed and we have room to print it in our array
237 if ( (breaks > 0) && !((in_index+1) % breaks) && (out_index+1 < max_len) ) {
238 // increment and print line break
239 out_index++;
240 sprintf(tmp++, "%s","\n");
241 }
242 in_index++;
243 }
244
245 return buf;
246 }
247
248 char *sprint_bin(const uint8_t *data, const size_t len) {
249 return sprint_bin_break(data, len, 0);
250 }
251
252 char *sprint_ascii_ex(const uint8_t *data, const size_t len, const size_t min_str_len) {
253 static char buf[1024];
254 char *tmp = buf;
255 memset(buf, 0x00, 1024);
256 size_t max_len = (len > 1010) ? 1010 : len;
257 size_t i = 0;
258 while(i < max_len){
259 char c = data[i];
260 tmp[i] = ((c < 32) || (c == 127)) ? '.' : c;
261 ++i;
262 }
263
264 int minStrLen = min_str_len > i ? min_str_len : 0;
265 for(; i < minStrLen; ++i)
266 tmp[i] = ' ';
267
268 return buf;
269 }
270
271 char *sprint_ascii(const uint8_t *data, const size_t len) {
272 return sprint_ascii_ex(data, len, 0);
273 }
274
275 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
276 {
277 while (len--) {
278 dest[len] = (uint8_t) n;
279 n >>= 8;
280 }
281 }
282
283 uint64_t bytes_to_num(uint8_t* src, size_t len)
284 {
285 uint64_t num = 0;
286 while (len--)
287 {
288 num = (num << 8) | (*src);
289 src++;
290 }
291 return num;
292 }
293
294 void num_to_bytebits(uint64_t n, size_t len, uint8_t *dest) {
295 while (len--) {
296 dest[len] = n & 1;
297 n >>= 1;
298 }
299 }
300
301 //least significant bit first
302 void num_to_bytebitsLSBF(uint64_t n, size_t len, uint8_t *dest) {
303 for(int i = 0 ; i < len ; ++i) {
304 dest[i] = n & 1;
305 n >>= 1;
306 }
307 }
308
309 // Swap bit order on a uint32_t value. Can be limited by nrbits just use say 8bits reversal
310 // And clears the rest of the bits.
311 uint32_t SwapBits(uint32_t value, int nrbits) {
312 uint32_t newvalue = 0;
313 for(int i = 0; i < nrbits; i++) {
314 newvalue ^= ((value >> i) & 1) << (nrbits - 1 - i);
315 }
316 return newvalue;
317 }
318
319 // aa,bb,cc,dd,ee,ff,gg,hh, ii,jj,kk,ll,mm,nn,oo,pp
320 // to
321 // hh,gg,ff,ee,dd,cc,bb,aa, pp,oo,nn,mm,ll,kk,jj,ii
322 // up to 64 bytes or 512 bits
323 uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockSize){
324 static uint8_t buf[64];
325 memset(buf, 0x00, 64);
326 uint8_t *tmp = buf;
327 for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
328 for (size_t i = 0; i < blockSize; i++){
329 tmp[i+(blockSize*block)] = src[(blockSize-1-i)+(blockSize*block)];
330 }
331 }
332 return tmp;
333 }
334
335 //assumes little endian
336 char *printBits(size_t const size, void const * const ptr)
337 {
338 unsigned char *b = (unsigned char*) ptr;
339 unsigned char byte;
340 static char buf[1024];
341 char * tmp = buf;
342 int i, j;
343
344 for (i=size-1;i>=0;i--)
345 {
346 for (j=7;j>=0;j--)
347 {
348 byte = b[i] & (1<<j);
349 byte >>= j;
350 sprintf(tmp, "%u", (unsigned int)byte);
351 tmp++;
352 }
353 }
354 return buf;
355 }
356
357 char * printBitsPar(const uint8_t *b, size_t len) {
358 static char buf1[512] = {0};
359 static char buf2[512] = {0};
360 static char *buf;
361 if (buf != buf1)
362 buf = buf1;
363 else
364 buf = buf2;
365 memset(buf, 0x00, 512);
366
367 for (int i = 0; i < len; i++) {
368 buf[i] = ((b[i / 8] << (i % 8)) & 0x80) ? '1':'0';
369 }
370 return buf;
371 }
372
373
374 // -------------------------------------------------------------------------
375 // string parameters lib
376 // -------------------------------------------------------------------------
377
378 // -------------------------------------------------------------------------
379 // line - param line
380 // bg, en - symbol numbers in param line of beginning and ending parameter
381 // paramnum - param number (from 0)
382 // -------------------------------------------------------------------------
383 int param_getptr(const char *line, int *bg, int *en, int paramnum)
384 {
385 int i;
386 int len = strlen(line);
387
388 *bg = 0;
389 *en = 0;
390
391 // skip spaces
392 while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++;
393 if (*bg >= len) {
394 return 1;
395 }
396
397 for (i = 0; i < paramnum; i++) {
398 while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++;
399 while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++;
400
401 if (line[*bg] == '\0') return 1;
402 }
403
404 *en = *bg;
405 while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++;
406
407 (*en)--;
408
409 return 0;
410 }
411
412
413 int param_getlength(const char *line, int paramnum)
414 {
415 int bg, en;
416
417 if (param_getptr(line, &bg, &en, paramnum)) return 0;
418
419 return en - bg + 1;
420 }
421
422 char param_getchar(const char *line, int paramnum) {
423 return param_getchar_indx(line, 0, paramnum);
424 }
425
426 char param_getchar_indx(const char *line, int indx, int paramnum) {
427 int bg, en;
428
429 if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
430
431 if (bg + indx > en)
432 return '\0';
433
434 return line[bg + indx];
435 }
436
437 uint8_t param_get8(const char *line, int paramnum)
438 {
439 return param_get8ex(line, paramnum, 0, 10);
440 }
441
442 /**
443 * @brief Reads a decimal integer (actually, 0-254, not 255)
444 * @param line
445 * @param paramnum
446 * @return -1 if error
447 */
448 uint8_t param_getdec(const char *line, int paramnum, uint8_t *destination)
449 {
450 uint8_t val = param_get8ex(line, paramnum, 255, 10);
451 if( (int8_t) val == -1) return 1;
452 (*destination) = val;
453 return 0;
454 }
455 /**
456 * @brief Checks if param is decimal
457 * @param line
458 * @param paramnum
459 * @return
460 */
461 uint8_t param_isdec(const char *line, int paramnum)
462 {
463 int bg, en;
464 //TODO, check more thorougly
465 if (!param_getptr(line, &bg, &en, paramnum)) return 1;
466 // return strtoul(&line[bg], NULL, 10) & 0xff;
467
468 return 0;
469 }
470
471 uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base)
472 {
473 int bg, en;
474
475 if (!param_getptr(line, &bg, &en, paramnum))
476 return strtoul(&line[bg], NULL, base) & 0xff;
477 else
478 return deflt;
479 }
480
481 uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base)
482 {
483 int bg, en;
484
485 if (!param_getptr(line, &bg, &en, paramnum))
486 return strtoul(&line[bg], NULL, base);
487 else
488 return deflt;
489 }
490
491 uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
492 {
493 int bg, en;
494
495 if (!param_getptr(line, &bg, &en, paramnum))
496 return strtoull(&line[bg], NULL, base);
497 else
498 return deflt;
499 }
500
501 int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
502 {
503 int bg, en, temp, i;
504
505 if (hexcnt % 2)
506 return 1;
507
508 if (param_getptr(line, &bg, &en, paramnum)) return 1;
509
510 if (en - bg + 1 != hexcnt)
511 return 1;
512
513 for(i = 0; i < hexcnt; i += 2) {
514 if (!(isxdigit((unsigned char)line[bg + i]) && isxdigit((unsigned char)line[bg + i + 1])) ) return 1;
515
516 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
517 data[i / 2] = temp & 0xff;
518 }
519
520 return 0;
521 }
522 int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *hexcnt)
523 {
524 int bg, en, temp, i;
525
526 //if (hexcnt % 2)
527 // return 1;
528
529 if (param_getptr(line, &bg, &en, paramnum)) return 1;
530
531 *hexcnt = en - bg + 1;
532 if (*hexcnt % 2) //error if not complete hex bytes
533 return 1;
534
535 for(i = 0; i < *hexcnt; i += 2) {
536 if (!(isxdigit((unsigned char)line[bg + i]) && isxdigit((unsigned char)line[bg + i + 1])) ) return 1;
537
538 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
539 data[i / 2] = temp & 0xff;
540 }
541
542 return 0;
543 }
544
545 int param_gethex_to_eol(const char *line, int paramnum, uint8_t * data, int maxdatalen, int *datalen) {
546 int bg, en;
547 uint32_t temp;
548 char buf[5] = {0};
549
550 if (param_getptr(line, &bg, &en, paramnum)) return 1;
551
552 *datalen = 0;
553
554 int indx = bg;
555 while (line[indx]) {
556 if (line[indx] == '\t' || line[indx] == ' ') {
557 indx++;
558 continue;
559 }
560
561 if (isxdigit((unsigned char)line[indx])) {
562 buf[strlen(buf) + 1] = 0x00;
563 buf[strlen(buf)] = line[indx];
564 } else {
565 // if we have symbols other than spaces and hex
566 return 1;
567 }
568
569 if (*datalen >= maxdatalen) {
570 // if we dont have space in buffer and have symbols to translate
571 return 2;
572 }
573
574 if (strlen(buf) >= 2) {
575 sscanf(buf, "%x", &temp);
576 data[*datalen] = (uint8_t)(temp & 0xff);
577 *buf = 0;
578 (*datalen)++;
579 }
580
581 indx++;
582 }
583
584 if (strlen(buf) > 0)
585 //error when not completed hex bytes
586 return 3;
587
588 return 0;
589 }
590
591 int param_getstr(const char *line, int paramnum, char * str, size_t buffersize)
592 {
593 int bg, en;
594
595 if (param_getptr(line, &bg, &en, paramnum)) {
596 return 0;
597 }
598
599 // Prevent out of bounds errors
600 if (en - bg + 1 >= buffersize) {
601 printf("out of bounds error: want %d bytes have %zd bytes\n", en - bg + 1 + 1, buffersize);
602 return 0;
603 }
604
605 memcpy(str, line + bg, en - bg + 1);
606 str[en - bg + 1] = 0;
607
608 return en - bg + 1;
609 }
610
611 /*
612 The following methods comes from Rfidler sourcecode.
613 https://github.com/ApertureLabsLtd/RFIDler/blob/master/firmware/Pic32/RFIDler.X/src/
614 */
615
616 // convert hex to sequence of 0/1 bit values
617 // returns number of bits converted
618 int hextobinarray(char *target, char *source)
619 {
620 int length, i, count= 0;
621 char* start = source;
622 char x;
623
624 length = strlen(source);
625 // process 4 bits (1 hex digit) at a time
626 while(length--)
627 {
628 x= *(source++);
629 // capitalize
630 if (x >= 'a' && x <= 'f')
631 x -= 32;
632 // convert to numeric value
633 if (x >= '0' && x <= '9')
634 x -= '0';
635 else if (x >= 'A' && x <= 'F')
636 x -= 'A' - 10;
637 else {
638 printf("Discovered unknown character %c %d at idx %tu of %s\n", x, x, source - start, start);
639 return 0;
640 }
641 // output
642 for(i= 0 ; i < 4 ; ++i, ++count)
643 *(target++)= (x >> (3 - i)) & 1;
644 }
645
646 return count;
647 }
648
649 // convert binary array of 0x00/0x01 values to hex (safe to do in place as target will always be shorter than source)
650 // return number of bits converted
651 int binarraytohex(char *target,char *source, int length)
652 {
653 unsigned char i, x;
654 int j = length;
655
656 if(j % 4)
657 return 0;
658
659 while(j)
660 {
661 for(i= x= 0 ; i < 4 ; ++i)
662 x += ( source[i] << (3 - i));
663 sprintf(target,"%X", (unsigned int)x);
664 ++target;
665 source += 4;
666 j -= 4;
667 }
668 return length;
669 }
670
671 // return parity bit required to match type
672 uint8_t GetParity( uint8_t *bits, uint8_t type, int length)
673 {
674 int x;
675
676 for(x= 0 ; length > 0 ; --length)
677 x += bits[length - 1];
678 x %= 2;
679
680 return x ^ type;
681 }
682
683 // add HID parity to binary array: EVEN prefix for 1st half of ID, ODD suffix for 2nd half
684 void wiegand_add_parity(uint8_t *target, uint8_t *source, uint8_t length)
685 {
686 *(target++)= GetParity(source, EVEN, length / 2);
687 memcpy(target, source, length);
688 target += length;
689 *(target)= GetParity(source + length / 2, ODD, length / 2);
690 }
691
692 // xor two arrays together for len items. The dst array contains the new xored values.
693 void xor(unsigned char *dst, unsigned char *src, size_t len) {
694 for( ; len > 0; len--,dst++,src++)
695 *dst ^= *src;
696 }
697
698 // RotateLeft - Ultralight, Desfire, works on byte level
699 // 00-01-02 >> 01-02-00
700 void rol(uint8_t *data, const size_t len){
701 uint8_t first = data[0];
702 for (size_t i = 0; i < len-1; i++) {
703 data[i] = data[i+1];
704 }
705 data[len-1] = first;
706 }
707
708
709 // Replace unprintable characters with a dot in char buffer
710 void clean_ascii(unsigned char *buf, size_t len) {
711 for (size_t i = 0; i < len; i++) {
712 if (!isprint(buf[i]))
713 buf[i] = '.';
714 }
715 }
716
717 // replace \r \n to \0
718 void strcleanrn(char *buf, size_t len) {
719 strcreplace(buf, len, '\n', '\0');
720 strcreplace(buf, len, '\r', '\0');
721 }
722
723 // replace char in buffer
724 void strcreplace(char *buf, size_t len, char from, char to) {
725 for (size_t i = 0; i < len; i++) {
726 if (buf[i] == from)
727 buf[i] = to;
728 }
729 }
730
731 char *strmcopy(char *buf) {
732 char * str = NULL;
733 if ((str = (char*) malloc(strlen(buf) + 1)) != NULL) {
734 memset(str, 0, strlen(buf) + 1);
735 strcpy(str, buf);
736 }
737 return str;
738 }
739
740
741 // determine number of logical CPU cores (use for multithreaded functions)
742 extern int num_CPUs(void)
743 {
744 #if defined(_WIN32)
745 #include <sysinfoapi.h>
746 SYSTEM_INFO sysinfo;
747 GetSystemInfo(&sysinfo);
748 return sysinfo.dwNumberOfProcessors;
749 #elif defined(__linux__) || defined(__APPLE__)
750 #include <unistd.h>
751 return sysconf(_SC_NPROCESSORS_ONLN);
752 #else
753 return 1;
754 #endif
755 }
756
Impressum, Datenschutz