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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" | |
12 | #define MAX_BIN_BREAK_LENGTH (3072+384+1) | |
13 | ||
14 | #ifndef _WIN32 | |
15 | #include <termios.h> | |
16 | #include <sys/ioctl.h> | |
17 | ||
18 | ||
19 | int ukbhit(void) | |
20 | { | |
21 | int cnt = 0; | |
22 | int error; | |
23 | static struct termios Otty, Ntty; | |
24 | ||
25 | ||
26 | if ( tcgetattr( 0, &Otty) == -1 ) return -1; | |
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> | |
45 | int ukbhit(void) { | |
46 | return kbhit(); | |
47 | } | |
48 | #endif | |
49 | ||
50 | // log files functions | |
51 | void AddLogLine(char *file, char *extData, char *c) { | |
52 | FILE *fLog = NULL; | |
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"); | |
61 | if (!fLog) { | |
62 | printf("Could not append log file %s", filename); | |
63 | return; | |
64 | } | |
65 | ||
66 | fprintf(fLog, "%s", extData); | |
67 | fprintf(fLog, "%s\n", c); | |
68 | fclose(fLog); | |
69 | } | |
70 | ||
71 | void AddLogHex(char *fileName, char *extData, const uint8_t * data, const size_t len){ | |
72 | AddLogLine(fileName, extData, sprint_hex(data, len)); | |
73 | } | |
74 | ||
75 | void 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 | ||
81 | void 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 | ||
92 | void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount) { | |
93 | char * fnameptr = fileName; | |
94 | memset(fileName, 0x00, 200); | |
95 | ||
96 | for (int j = 0; j < byteCount; j++, fnameptr += 2) | |
97 | sprintf(fnameptr, "%02x", (unsigned int) uid[j]); | |
98 | sprintf(fnameptr, "%s", ext); | |
99 | } | |
100 | ||
101 | // printing and converting functions | |
102 | ||
103 | void 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 | ||
113 | char *sprint_hex(const uint8_t *data, const size_t len) { | |
114 | ||
115 | int maxLen = ( len > 1024/3) ? 1024/3 : len; | |
116 | static char buf[1024]; | |
117 | memset(buf, 0x00, 1024); | |
118 | char *tmp = buf; | |
119 | size_t i; | |
120 | ||
121 | for (i=0; i < maxLen; ++i, tmp += 3) | |
122 | sprintf(tmp, "%02x ", (unsigned int) data[i]); | |
123 | ||
124 | return buf; | |
125 | } | |
126 | ||
127 | char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) { | |
128 | // make sure we don't go beyond our char array memory | |
129 | int max_len; | |
130 | if (breaks==0) | |
131 | max_len = ( len > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len; | |
132 | else | |
133 | max_len = ( len+(len/breaks) > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len+(len/breaks); | |
134 | ||
135 | static char buf[MAX_BIN_BREAK_LENGTH]; // 3072 + end of line characters if broken at 8 bits | |
136 | //clear memory | |
137 | memset(buf, 0x00, sizeof(buf)); | |
138 | char *tmp = buf; | |
139 | ||
140 | size_t in_index = 0; | |
141 | // loop through the out_index to make sure we don't go too far | |
142 | for (size_t out_index=0; out_index < max_len; out_index++) { | |
143 | // set character - (should be binary but verify it isn't more than 1 digit) | |
144 | if (data[in_index]<10) | |
145 | sprintf(tmp++, "%u", (unsigned int) data[in_index]); | |
146 | // check if a line break is needed and we have room to print it in our array | |
147 | if ( (breaks > 0) && !((in_index+1) % breaks) && (out_index+1 != max_len) ) { | |
148 | // increment and print line break | |
149 | out_index++; | |
150 | sprintf(tmp++, "%s","\n"); | |
151 | } | |
152 | in_index++; | |
153 | } | |
154 | ||
155 | return buf; | |
156 | } | |
157 | ||
158 | char *sprint_bin(const uint8_t *data, const size_t len) { | |
159 | return sprint_bin_break(data, len, 0); | |
160 | } | |
161 | void num_to_bytes(uint64_t n, size_t len, uint8_t* dest) | |
162 | { | |
163 | while (len--) { | |
164 | dest[len] = (uint8_t) n; | |
165 | n >>= 8; | |
166 | } | |
167 | } | |
168 | ||
169 | uint64_t bytes_to_num(uint8_t* src, size_t len) | |
170 | { | |
171 | uint64_t num = 0; | |
172 | while (len--) | |
173 | { | |
174 | num = (num << 8) | (*src); | |
175 | src++; | |
176 | } | |
177 | return num; | |
178 | } | |
179 | ||
180 | void num_to_bytebits(uint64_t n, size_t len, uint8_t *dest) { | |
181 | while (len--) { | |
182 | dest[len] = n & 1; | |
183 | n >>= 1; | |
184 | } | |
185 | } | |
186 | ||
187 | // aa,bb,cc,dd,ee,ff,gg,hh, ii,jj,kk,ll,mm,nn,oo,pp | |
188 | // to | |
189 | // hh,gg,ff,ee,dd,cc,bb,aa, pp,oo,nn,mm,ll,kk,jj,ii | |
190 | // up to 64 bytes or 512 bits | |
191 | uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockSize){ | |
192 | static uint8_t buf[64]; | |
193 | memset(buf, 0x00, 64); | |
194 | uint8_t *tmp = buf; | |
195 | for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){ | |
196 | for (size_t i = 0; i < blockSize; i++){ | |
197 | tmp[i+(blockSize*block)] = src[(blockSize-1-i)+(blockSize*block)]; | |
198 | } | |
199 | } | |
200 | return tmp; | |
201 | } | |
202 | ||
203 | //assumes little endian | |
204 | char * printBits(size_t const size, void const * const ptr) | |
205 | { | |
206 | unsigned char *b = (unsigned char*) ptr; | |
207 | unsigned char byte; | |
208 | static char buf[1024]; | |
209 | char * tmp = buf; | |
210 | int i, j; | |
211 | ||
212 | for (i=size-1;i>=0;i--) | |
213 | { | |
214 | for (j=7;j>=0;j--) | |
215 | { | |
216 | byte = b[i] & (1<<j); | |
217 | byte >>= j; | |
218 | sprintf(tmp, "%u", (unsigned int)byte); | |
219 | tmp++; | |
220 | } | |
221 | } | |
222 | return buf; | |
223 | } | |
224 | ||
225 | // ------------------------------------------------------------------------- | |
226 | // string parameters lib | |
227 | // ------------------------------------------------------------------------- | |
228 | ||
229 | // ------------------------------------------------------------------------- | |
230 | // line - param line | |
231 | // bg, en - symbol numbers in param line of beginning an ending parameter | |
232 | // paramnum - param number (from 0) | |
233 | // ------------------------------------------------------------------------- | |
234 | int param_getptr(const char *line, int *bg, int *en, int paramnum) | |
235 | { | |
236 | int i; | |
237 | int len = strlen(line); | |
238 | ||
239 | *bg = 0; | |
240 | *en = 0; | |
241 | ||
242 | // skip spaces | |
243 | while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++; | |
244 | if (*bg >= len) { | |
245 | return 1; | |
246 | } | |
247 | ||
248 | for (i = 0; i < paramnum; i++) { | |
249 | while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++; | |
250 | while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++; | |
251 | ||
252 | if (line[*bg] == '\0') return 1; | |
253 | } | |
254 | ||
255 | *en = *bg; | |
256 | while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++; | |
257 | ||
258 | (*en)--; | |
259 | ||
260 | return 0; | |
261 | } | |
262 | ||
263 | ||
264 | char param_getchar(const char *line, int paramnum) | |
265 | { | |
266 | int bg, en; | |
267 | ||
268 | if (param_getptr(line, &bg, &en, paramnum)) return 0x00; | |
269 | ||
270 | return line[bg]; | |
271 | } | |
272 | ||
273 | uint8_t param_get8(const char *line, int paramnum) | |
274 | { | |
275 | return param_get8ex(line, paramnum, 0, 10); | |
276 | } | |
277 | ||
278 | /** | |
279 | * @brief Reads a decimal integer (actually, 0-254, not 255) | |
280 | * @param line | |
281 | * @param paramnum | |
282 | * @return -1 if error | |
283 | */ | |
284 | uint8_t param_getdec(const char *line, int paramnum, uint8_t *destination) | |
285 | { | |
286 | uint8_t val = param_get8ex(line, paramnum, 255, 10); | |
287 | if( (int8_t) val == -1) return 1; | |
288 | (*destination) = val; | |
289 | return 0; | |
290 | } | |
291 | /** | |
292 | * @brief Checks if param is decimal | |
293 | * @param line | |
294 | * @param paramnum | |
295 | * @return | |
296 | */ | |
297 | uint8_t param_isdec(const char *line, int paramnum) | |
298 | { | |
299 | int bg, en; | |
300 | //TODO, check more thorougly | |
301 | if (!param_getptr(line, &bg, &en, paramnum)) return 1; | |
302 | // return strtoul(&line[bg], NULL, 10) & 0xff; | |
303 | ||
304 | return 0; | |
305 | } | |
306 | ||
307 | uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base) | |
308 | { | |
309 | int bg, en; | |
310 | ||
311 | if (!param_getptr(line, &bg, &en, paramnum)) | |
312 | return strtoul(&line[bg], NULL, base) & 0xff; | |
313 | else | |
314 | return deflt; | |
315 | } | |
316 | ||
317 | uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base) | |
318 | { | |
319 | int bg, en; | |
320 | ||
321 | if (!param_getptr(line, &bg, &en, paramnum)) | |
322 | return strtoul(&line[bg], NULL, base); | |
323 | else | |
324 | return deflt; | |
325 | } | |
326 | ||
327 | uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base) | |
328 | { | |
329 | int bg, en; | |
330 | ||
331 | if (!param_getptr(line, &bg, &en, paramnum)) | |
332 | return strtoull(&line[bg], NULL, base); | |
333 | else | |
334 | return deflt; | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
339 | int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt) | |
340 | { | |
341 | int bg, en, temp, i; | |
342 | ||
343 | if (hexcnt % 2) | |
344 | return 1; | |
345 | ||
346 | if (param_getptr(line, &bg, &en, paramnum)) return 1; | |
347 | ||
348 | if (en - bg + 1 != hexcnt) | |
349 | return 1; | |
350 | ||
351 | for(i = 0; i < hexcnt; i += 2) { | |
352 | if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) ) return 1; | |
353 | ||
354 | sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp); | |
355 | data[i / 2] = temp & 0xff; | |
356 | } | |
357 | ||
358 | return 0; | |
359 | } | |
360 | int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *hexcnt) | |
361 | { | |
362 | int bg, en, temp, i; | |
363 | ||
364 | //if (hexcnt % 2) | |
365 | // return 1; | |
366 | ||
367 | if (param_getptr(line, &bg, &en, paramnum)) return 1; | |
368 | ||
369 | *hexcnt = en - bg + 1; | |
370 | if (*hexcnt % 2) //error if not complete hex bytes | |
371 | return 1; | |
372 | ||
373 | for(i = 0; i < *hexcnt; i += 2) { | |
374 | if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) ) return 1; | |
375 | ||
376 | sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp); | |
377 | data[i / 2] = temp & 0xff; | |
378 | } | |
379 | ||
380 | return 0; | |
381 | } | |
382 | int param_getstr(const char *line, int paramnum, char * str) | |
383 | { | |
384 | int bg, en; | |
385 | ||
386 | if (param_getptr(line, &bg, &en, paramnum)) return 0; | |
387 | ||
388 | memcpy(str, line + bg, en - bg + 1); | |
389 | str[en - bg + 1] = 0; | |
390 | ||
391 | return en - bg + 1; | |
392 | } | |
393 | ||
394 | /* | |
395 | The following methods comes from Rfidler sourcecode. | |
396 | https://github.com/ApertureLabsLtd/RFIDler/blob/master/firmware/Pic32/RFIDler.X/src/ | |
397 | */ | |
398 | ||
399 | // convert hex to sequence of 0/1 bit values | |
400 | // returns number of bits converted | |
401 | int hextobinarray(char *target, char *source) | |
402 | { | |
403 | int length, i, count= 0; | |
404 | char x; | |
405 | ||
406 | length = strlen(source); | |
407 | // process 4 bits (1 hex digit) at a time | |
408 | while(length--) | |
409 | { | |
410 | x= *(source++); | |
411 | // capitalize | |
412 | if (x >= 'a' && x <= 'f') | |
413 | x -= 32; | |
414 | // convert to numeric value | |
415 | if (x >= '0' && x <= '9') | |
416 | x -= '0'; | |
417 | else if (x >= 'A' && x <= 'F') | |
418 | x -= 'A' - 10; | |
419 | else | |
420 | return 0; | |
421 | // output | |
422 | for(i= 0 ; i < 4 ; ++i, ++count) | |
423 | *(target++)= (x >> (3 - i)) & 1; | |
424 | } | |
425 | ||
426 | return count; | |
427 | } | |
428 | ||
429 | // convert hex to human readable binary string | |
430 | int hextobinstring(char *target, char *source) | |
431 | { | |
432 | int length; | |
433 | ||
434 | if(!(length= hextobinarray(target, source))) | |
435 | return 0; | |
436 | binarraytobinstring(target, target, length); | |
437 | return length; | |
438 | } | |
439 | ||
440 | // convert binary array of 0x00/0x01 values to hex (safe to do in place as target will always be shorter than source) | |
441 | // return number of bits converted | |
442 | int binarraytohex(char *target,char *source, int length) | |
443 | { | |
444 | unsigned char i, x; | |
445 | int j = length; | |
446 | ||
447 | if(j % 4) | |
448 | return 0; | |
449 | ||
450 | while(j) | |
451 | { | |
452 | for(i= x= 0 ; i < 4 ; ++i) | |
453 | x += ( source[i] << (3 - i)); | |
454 | sprintf(target,"%X", (unsigned int)x); | |
455 | ++target; | |
456 | source += 4; | |
457 | j -= 4; | |
458 | } | |
459 | return length; | |
460 | } | |
461 | ||
462 | // convert binary array to human readable binary | |
463 | void binarraytobinstring(char *target, char *source, int length) | |
464 | { | |
465 | int i; | |
466 | ||
467 | for(i= 0 ; i < length ; ++i) | |
468 | *(target++)= *(source++) + '0'; | |
469 | *target= '\0'; | |
470 | } | |
471 | ||
472 | // return parity bit required to match type | |
473 | uint8_t GetParity( uint8_t *bits, uint8_t type, int length) | |
474 | { | |
475 | int x; | |
476 | ||
477 | for(x= 0 ; length > 0 ; --length) | |
478 | x += bits[length - 1]; | |
479 | x %= 2; | |
480 | ||
481 | return x ^ type; | |
482 | } | |
483 | ||
484 | // add HID parity to binary array: EVEN prefix for 1st half of ID, ODD suffix for 2nd half | |
485 | void wiegand_add_parity(uint8_t *target, uint8_t *source, uint8_t length) | |
486 | { | |
487 | *(target++)= GetParity(source, EVEN, length / 2); | |
488 | memcpy(target, source, length); | |
489 | target += length; | |
490 | *(target)= GetParity(source + length / 2, ODD, length / 2); | |
491 | } | |
492 | ||
493 | void xor(unsigned char *dst, unsigned char *src, size_t len) { | |
494 | for( ; len > 0; len--,dst++,src++) | |
495 | *dst ^= *src; | |
496 | } | |
497 | ||
498 | int32_t le24toh (uint8_t data[3]) { | |
499 | return (data[2] << 16) | (data[1] << 8) | data[0]; | |
500 | } | |
501 | ||
502 | // RotateLeft - Ultralight, Desfire, works on byte level | |
503 | // 00-01-02 >> 01-02-00 | |
504 | void rol(uint8_t *data, const size_t len){ | |
505 | uint8_t first = data[0]; | |
506 | for (size_t i = 0; i < len-1; i++) { | |
507 | data[i] = data[i+1]; | |
508 | } | |
509 | data[len-1] = first; | |
510 | } |