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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"
ace26dbd 12#define MAX_BIN_BREAK_LENGTH (3072+384+1)
534983d7 13
cb64309e 14#ifndef _WIN32
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15#include <termios.h>
16#include <sys/ioctl.h>
79544b28 17
ace26dbd 18
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19int ukbhit(void)
20{
21 int cnt = 0;
22 int error;
23 static struct termios Otty, Ntty;
24
25
8ea57060 26 if ( tcgetattr( 0, &Otty) == -1 ) return -1;
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27 Ntty = Otty;
28
29 Ntty.c_iflag = 0; /* input mode */
30 Ntty.c_oflag = 0; /* output mode */
31 Ntty.c_lflag &= ~ICANON; /* raw mode */
32 Ntty.c_cc[VMIN] = CMIN; /* minimum time to wait */
33 Ntty.c_cc[VTIME] = CTIME; /* minimum characters to wait for */
34
35 if (0 == (error = tcsetattr(0, TCSANOW, &Ntty))) {
36 error += ioctl(0, FIONREAD, &cnt);
37 error += tcsetattr(0, TCSANOW, &Otty);
38 }
39
40 return ( error == 0 ? cnt : -1 );
41}
42
43#else
44#include <conio.h>
45int ukbhit(void) {
46 return kbhit();
47}
48#endif
49
55acbb2a 50// log files functions
b915fda3 51void AddLogLine(char *file, char *extData, char *c) {
55acbb2a 52 FILE *fLog = NULL;
b915fda3 53 char filename[FILE_PATH_SIZE] = {0x00};
54 int len = 0;
55
56 len = strlen(file);
57 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
58 memcpy(filename, file, len);
59
60 fLog = fopen(filename, "a");
55acbb2a 61 if (!fLog) {
b915fda3 62 printf("Could not append log file %s", filename);
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63 return;
64 }
65
66 fprintf(fLog, "%s", extData);
67 fprintf(fLog, "%s\n", c);
68 fclose(fLog);
69}
70
71void AddLogHex(char *fileName, char *extData, const uint8_t * data, const size_t len){
72 AddLogLine(fileName, extData, sprint_hex(data, len));
73}
74
75void AddLogUint64(char *fileName, char *extData, const uint64_t data) {
76 char buf[100] = {0};
77 sprintf(buf, "%x%x", (unsigned int)((data & 0xFFFFFFFF00000000) >> 32), (unsigned int)(data & 0xFFFFFFFF));
78 AddLogLine(fileName, extData, buf);
79}
80
81void AddLogCurrentDT(char *fileName) {
82 char buff[20];
83 struct tm *curTime;
84
85 time_t now = time(0);
86 curTime = gmtime(&now);
87
88 strftime (buff, sizeof(buff), "%Y-%m-%d %H:%M:%S", curTime);
89 AddLogLine(fileName, "\nanticollision: ", buff);
90}
91
e0c635d1 92void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount) {
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93 char * fnameptr = fileName;
94 memset(fileName, 0x00, 200);
95
e0c635d1 96 for (int j = 0; j < byteCount; j++, fnameptr += 2)
d1869c33 97 sprintf(fnameptr, "%02x", (unsigned int) uid[j]);
55acbb2a 98 sprintf(fnameptr, "%s", ext);
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99}
100
101// printing and converting functions
f397b5cc 102
534983d7 103void print_hex(const uint8_t * data, const size_t len)
104{
105 size_t i;
106
107 for (i=0; i < len; i++)
108 printf("%02x ", data[i]);
109
110 printf("\n");
111}
112
59f726c9 113void print_hex_break(const uint8_t *data, const size_t len, uint8_t breaks) {
114
115 int rownum = 0;
116 printf("[%02d] | ", rownum);
117 for (int i = 0; i < len; ++i) {
118
119 printf("%02X ", data[i]);
120
121 // check if a line break is needed
122 if ( breaks > 0 && !((i+1) % breaks) && (i+1 < len) ) {
123 ++rownum;
124 printf("\n[%02d] | ", rownum);
125 }
126 }
127 printf("\n");
128}
129
4973f23d 130char *sprint_hex(const uint8_t *data, const size_t len) {
b915fda3 131
132 int maxLen = ( len > 1024/3) ? 1024/3 : len;
534983d7 133 static char buf[1024];
c585a5cf 134 memset(buf, 0x00, 1024);
4973f23d 135 char *tmp = buf;
534983d7 136 size_t i;
137
b915fda3 138 for (i=0; i < maxLen; ++i, tmp += 3)
d1869c33 139 sprintf(tmp, "%02x ", (unsigned int) data[i]);
534983d7 140
141 return buf;
142}
f89c7050 143
2767fc02 144char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) {
ace26dbd 145 // make sure we don't go beyond our char array memory
7bc6fac3 146 int max_len;
147 if (breaks==0)
148 max_len = ( len > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len;
149 else
150 max_len = ( len+(len/breaks) > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len+(len/breaks);
151
ace26dbd 152 static char buf[MAX_BIN_BREAK_LENGTH]; // 3072 + end of line characters if broken at 8 bits
153 //clear memory
154 memset(buf, 0x00, sizeof(buf));
2767fc02 155 char *tmp = buf;
79544b28 156
ace26dbd 157 size_t in_index = 0;
158 // loop through the out_index to make sure we don't go too far
59f726c9 159 for (size_t out_index=0; out_index < max_len-1; out_index++) {
8ea57060 160 // set character - (should be binary but verify it isn't more than 1 digit)
161 if (data[in_index]<10)
d1869c33 162 sprintf(tmp++, "%u", (unsigned int) data[in_index]);
6ca1477c 163 // check if a line break is needed and we have room to print it in our array
ace26dbd 164 if ( (breaks > 0) && !((in_index+1) % breaks) && (out_index+1 != max_len) ) {
165 // increment and print line break
166 out_index++;
2767fc02 167 sprintf(tmp++, "%s","\n");
ace26dbd 168 }
169 in_index++;
2767fc02 170 }
79544b28 171
172 return buf;
173}
174
2767fc02 175char *sprint_bin(const uint8_t *data, const size_t len) {
176 return sprint_bin_break(data, len, 0);
177}
59f726c9 178
179char *sprint_hex_ascii(const uint8_t *data, const size_t len) {
180 static char buf[1024];
181 char *tmp = buf;
182 memset(buf, 0x00, 1024);
183 size_t max_len = (len > 1010) ? 1010 : len;
184
185 sprintf(tmp, "%s| ", sprint_hex(data, max_len) );
186
187 size_t i = 0;
188 size_t pos = (max_len * 3)+2;
189 while(i < max_len){
190 char c = data[i];
191 if ( (c < 32) || (c == 127))
192 c = '.';
193 sprintf(tmp+pos+i, "%c", c);
194 ++i;
195 }
196 return buf;
197}
198
199char *sprint_ascii(const uint8_t *data, const size_t len) {
200 static char buf[1024];
201 char *tmp = buf;
202 memset(buf, 0x00, 1024);
203 size_t max_len = (len > 1010) ? 1010 : len;
204 size_t i = 0;
205 while(i < max_len){
206 char c = data[i];
207 tmp[i] = ((c < 32) || (c == 127)) ? '.' : c;
208 ++i;
209 }
210 return buf;
211}
212
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213void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
214{
215 while (len--) {
216 dest[len] = (uint8_t) n;
217 n >>= 8;
218 }
219}
220
221uint64_t bytes_to_num(uint8_t* src, size_t len)
222{
223 uint64_t num = 0;
224 while (len--)
225 {
226 num = (num << 8) | (*src);
227 src++;
228 }
229 return num;
230}
f397b5cc 231
709665b5 232void num_to_bytebits(uint64_t n, size_t len, uint8_t *dest) {
233 while (len--) {
234 dest[len] = n & 1;
235 n >>= 1;
236 }
237}
238
59f726c9 239//least significant bit first
240void num_to_bytebitsLSBF(uint64_t n, size_t len, uint8_t *dest) {
241 for(int i = 0 ; i < len ; ++i) {
242 dest[i] = n & 1;
243 n >>= 1;
244 }
245}
246
247
f9848fd6 248// aa,bb,cc,dd,ee,ff,gg,hh, ii,jj,kk,ll,mm,nn,oo,pp
249// to
250// hh,gg,ff,ee,dd,cc,bb,aa, pp,oo,nn,mm,ll,kk,jj,ii
251// up to 64 bytes or 512 bits
2b3af97d 252uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockSize){
253 static uint8_t buf[64];
254 memset(buf, 0x00, 64);
255 uint8_t *tmp = buf;
256 for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
257 for (size_t i = 0; i < blockSize; i++){
258 tmp[i+(blockSize*block)] = src[(blockSize-1-i)+(blockSize*block)];
f9848fd6 259 }
260 }
2b3af97d 261 return tmp;
f9848fd6 262}
263
59f726c9 264// takes a uint8_t src array, for len items and reverses the byte order in blocksizes (8,16,32,64),
265// returns: the dest array contains the reordered src array.
266void SwapEndian64ex(const uint8_t *src, const size_t len, const uint8_t blockSize, uint8_t *dest){
267 for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
268 for (size_t i = 0; i < blockSize; i++){
269 dest[i+(blockSize*block)] = src[(blockSize-1-i)+(blockSize*block)];
270 }
271 }
272}
273
79544b28 274//assumes little endian
275char * printBits(size_t const size, void const * const ptr)
276{
277 unsigned char *b = (unsigned char*) ptr;
278 unsigned char byte;
279 static char buf[1024];
280 char * tmp = buf;
281 int i, j;
282
283 for (i=size-1;i>=0;i--)
284 {
285 for (j=7;j>=0;j--)
286 {
287 byte = b[i] & (1<<j);
288 byte >>= j;
d1869c33 289 sprintf(tmp, "%u", (unsigned int)byte);
79544b28 290 tmp++;
291 }
292 }
293 return buf;
294}
295
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296// -------------------------------------------------------------------------
297// string parameters lib
298// -------------------------------------------------------------------------
299
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300// -------------------------------------------------------------------------
301// line - param line
302// bg, en - symbol numbers in param line of beginning an ending parameter
303// paramnum - param number (from 0)
304// -------------------------------------------------------------------------
305int param_getptr(const char *line, int *bg, int *en, int paramnum)
306{
307 int i;
308 int len = strlen(line);
309
310 *bg = 0;
311 *en = 0;
312
313 // skip spaces
314 while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++;
315 if (*bg >= len) {
316 return 1;
317 }
318
319 for (i = 0; i < paramnum; i++) {
320 while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++;
321 while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++;
322
323 if (line[*bg] == '\0') return 1;
324 }
325
326 *en = *bg;
327 while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++;
328
329 (*en)--;
330
331 return 0;
332}
333
31abe49f 334
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335char param_getchar(const char *line, int paramnum)
336{
337 int bg, en;
338
339 if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
340
341 return line[bg];
342}
343
344uint8_t param_get8(const char *line, int paramnum)
345{
6ca1477c 346 return param_get8ex(line, paramnum, 0, 10);
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347}
348
f6d9fb17 349/**
31abe49f 350 * @brief Reads a decimal integer (actually, 0-254, not 255)
f6d9fb17
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351 * @param line
352 * @param paramnum
31abe49f 353 * @return -1 if error
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354 */
355uint8_t param_getdec(const char *line, int paramnum, uint8_t *destination)
356{
31abe49f 357 uint8_t val = param_get8ex(line, paramnum, 255, 10);
31abe49f 358 if( (int8_t) val == -1) return 1;
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359 (*destination) = val;
360 return 0;
361}
362/**
363 * @brief Checks if param is decimal
364 * @param line
365 * @param paramnum
366 * @return
367 */
368uint8_t param_isdec(const char *line, int paramnum)
369{
370 int bg, en;
371 //TODO, check more thorougly
372 if (!param_getptr(line, &bg, &en, paramnum)) return 1;
373 // return strtoul(&line[bg], NULL, 10) & 0xff;
374
375 return 0;
376}
377
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378uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base)
379{
380 int bg, en;
381
382 if (!param_getptr(line, &bg, &en, paramnum))
6c6d1ac1 383 return strtoul(&line[bg], NULL, base) & 0xff;
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384 else
385 return deflt;
386}
387
388uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base)
389{
390 int bg, en;
391
392 if (!param_getptr(line, &bg, &en, paramnum))
6c6d1ac1 393 return strtoul(&line[bg], NULL, base);
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394 else
395 return deflt;
396}
397
398uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
399{
400 int bg, en;
401
402 if (!param_getptr(line, &bg, &en, paramnum))
6c6d1ac1 403 return strtoull(&line[bg], NULL, base);
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404 else
405 return deflt;
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406}
407
408int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
409{
410 int bg, en, temp, i;
411
412 if (hexcnt % 2)
413 return 1;
414
415 if (param_getptr(line, &bg, &en, paramnum)) return 1;
416
417 if (en - bg + 1 != hexcnt)
418 return 1;
419
420 for(i = 0; i < hexcnt; i += 2) {
421 if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) ) return 1;
422
423 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
424 data[i / 2] = temp & 0xff;
425 }
426
427 return 0;
428}
1a5a73ab 429int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *hexcnt)
430{
431 int bg, en, temp, i;
432
433 //if (hexcnt % 2)
434 // return 1;
435
436 if (param_getptr(line, &bg, &en, paramnum)) return 1;
437
438 *hexcnt = en - bg + 1;
439 if (*hexcnt % 2) //error if not complete hex bytes
440 return 1;
aea4d766 441
1a5a73ab 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}
aea4d766 451int param_getstr(const char *line, int paramnum, char * str)
452{
453 int bg, en;
454
455 if (param_getptr(line, &bg, &en, paramnum)) return 0;
456
457 memcpy(str, line + bg, en - bg + 1);
458 str[en - bg + 1] = 0;
459
460 return en - bg + 1;
461}
79544b28 462
463/*
464The following methods comes from Rfidler sourcecode.
465https://github.com/ApertureLabsLtd/RFIDler/blob/master/firmware/Pic32/RFIDler.X/src/
466*/
467
468// convert hex to sequence of 0/1 bit values
469// returns number of bits converted
470int hextobinarray(char *target, char *source)
471{
472 int length, i, count= 0;
473 char x;
474
475 length = strlen(source);
476 // process 4 bits (1 hex digit) at a time
477 while(length--)
478 {
479 x= *(source++);
480 // capitalize
481 if (x >= 'a' && x <= 'f')
482 x -= 32;
483 // convert to numeric value
484 if (x >= '0' && x <= '9')
485 x -= '0';
486 else if (x >= 'A' && x <= 'F')
487 x -= 'A' - 10;
488 else
489 return 0;
490 // output
491 for(i= 0 ; i < 4 ; ++i, ++count)
492 *(target++)= (x >> (3 - i)) & 1;
493 }
494
495 return count;
496}
497
498// convert hex to human readable binary string
499int hextobinstring(char *target, char *source)
500{
501 int length;
502
503 if(!(length= hextobinarray(target, source)))
504 return 0;
505 binarraytobinstring(target, target, length);
506 return length;
507}
508
509// convert binary array of 0x00/0x01 values to hex (safe to do in place as target will always be shorter than source)
510// return number of bits converted
1c4c0b06 511int binarraytohex(char *target,char *source, int length)
79544b28 512{
513 unsigned char i, x;
514 int j = length;
515
516 if(j % 4)
517 return 0;
518
519 while(j)
520 {
521 for(i= x= 0 ; i < 4 ; ++i)
522 x += ( source[i] << (3 - i));
d1869c33 523 sprintf(target,"%X", (unsigned int)x);
79544b28 524 ++target;
525 source += 4;
526 j -= 4;
527 }
528 return length;
529}
530
531// convert binary array to human readable binary
532void binarraytobinstring(char *target, char *source, int length)
533{
534 int i;
535
536 for(i= 0 ; i < length ; ++i)
537 *(target++)= *(source++) + '0';
538 *target= '\0';
539}
540
541// return parity bit required to match type
709665b5 542uint8_t GetParity( uint8_t *bits, uint8_t type, int length)
79544b28 543{
544 int x;
545
546 for(x= 0 ; length > 0 ; --length)
547 x += bits[length - 1];
548 x %= 2;
549
550 return x ^ type;
551}
552
553// add HID parity to binary array: EVEN prefix for 1st half of ID, ODD suffix for 2nd half
709665b5 554void wiegand_add_parity(uint8_t *target, uint8_t *source, uint8_t length)
79544b28 555{
556 *(target++)= GetParity(source, EVEN, length / 2);
557 memcpy(target, source, length);
558 target += length;
559 *(target)= GetParity(source + length / 2, ODD, length / 2);
560}
4973f23d 561
59f726c9 562// xor two arrays together for len items. The dst array contains the new xored values.
4973f23d 563void xor(unsigned char *dst, unsigned char *src, size_t len) {
564 for( ; len > 0; len--,dst++,src++)
565 *dst ^= *src;
566}
567
568int32_t le24toh (uint8_t data[3]) {
569 return (data[2] << 16) | (data[1] << 8) | data[0];
570}
c872d8c1 571uint32_t le32toh (uint8_t *data) {
572 return (uint32_t)( (data[3]<<24) | (data[2]<<16) | (data[1]<<8) | data[0]);
573}
c4c3af7c 574
575// RotateLeft - Ultralight, Desfire, works on byte level
576// 00-01-02 >> 01-02-00
577void rol(uint8_t *data, const size_t len){
578 uint8_t first = data[0];
579 for (size_t i = 0; i < len-1; i++) {
580 data[i] = data[i+1];
581 }
582 data[len-1] = first;
583}
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