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[proxmark3-svn] / client / util.c
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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"
534983d7 12
cb64309e 13#ifndef _WIN32
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14#include <termios.h>
15#include <sys/ioctl.h>
79544b28 16
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17int 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>
43int ukbhit(void) {
44 return kbhit();
45}
46#endif
47
55acbb2a 48// log files functions
b915fda3 49void AddLogLine(char *file, char *extData, char *c) {
55acbb2a 50 FILE *fLog = NULL;
b915fda3 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");
55acbb2a 59 if (!fLog) {
b915fda3 60 printf("Could not append log file %s", filename);
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61 return;
62 }
63
64 fprintf(fLog, "%s", extData);
65 fprintf(fLog, "%s\n", c);
66 fclose(fLog);
67}
68
69void AddLogHex(char *fileName, char *extData, const uint8_t * data, const size_t len){
70 AddLogLine(fileName, extData, sprint_hex(data, len));
71}
72
73void 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
79void 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
e0c635d1 90void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount) {
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91 char * fnameptr = fileName;
92 memset(fileName, 0x00, 200);
93
e0c635d1 94 for (int j = 0; j < byteCount; j++, fnameptr += 2)
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95 sprintf(fnameptr, "%02x", uid[j]);
96 sprintf(fnameptr, "%s", ext);
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97}
98
99// printing and converting functions
f397b5cc 100
534983d7 101void 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
4973f23d 111char *sprint_hex(const uint8_t *data, const size_t len) {
b915fda3 112
113 int maxLen = ( len > 1024/3) ? 1024/3 : len;
534983d7 114 static char buf[1024];
c585a5cf 115 memset(buf, 0x00, 1024);
4973f23d 116 char *tmp = buf;
534983d7 117 size_t i;
118
b915fda3 119 for (i=0; i < maxLen; ++i, tmp += 3)
534983d7 120 sprintf(tmp, "%02x ", data[i]);
121
122 return buf;
123}
f89c7050 124
2767fc02 125char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) {
79544b28 126
e6432f05 127 int maxLen = ( len > 1020) ? 1020 : len;
79544b28 128 static char buf[1024];
c585a5cf 129 memset(buf, 0x00, 1024);
2767fc02 130 char *tmp = buf;
79544b28 131
2767fc02 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 }
79544b28 137
138 return buf;
139}
140
2767fc02 141char *sprint_bin(const uint8_t *data, const size_t len) {
142 return sprint_bin_break(data, len, 0);
143}
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144void 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
152uint64_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}
f397b5cc 162
709665b5 163void num_to_bytebits(uint64_t n, size_t len, uint8_t *dest) {
164 while (len--) {
165 dest[len] = n & 1;
166 n >>= 1;
167 }
168}
169
f9848fd6 170// aa,bb,cc,dd,ee,ff,gg,hh, ii,jj,kk,ll,mm,nn,oo,pp
171// to
172// hh,gg,ff,ee,dd,cc,bb,aa, pp,oo,nn,mm,ll,kk,jj,ii
173// up to 64 bytes or 512 bits
2b3af97d 174uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockSize){
175 static uint8_t buf[64];
176 memset(buf, 0x00, 64);
177 uint8_t *tmp = buf;
178 for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
179 for (size_t i = 0; i < blockSize; i++){
180 tmp[i+(blockSize*block)] = src[(blockSize-1-i)+(blockSize*block)];
f9848fd6 181 }
182 }
2b3af97d 183 return tmp;
f9848fd6 184}
185
79544b28 186//assumes little endian
187char * printBits(size_t const size, void const * const ptr)
188{
189 unsigned char *b = (unsigned char*) ptr;
190 unsigned char byte;
191 static char buf[1024];
192 char * tmp = buf;
193 int i, j;
194
195 for (i=size-1;i>=0;i--)
196 {
197 for (j=7;j>=0;j--)
198 {
199 byte = b[i] & (1<<j);
200 byte >>= j;
201 sprintf(tmp, "%u", byte);
202 tmp++;
203 }
204 }
205 return buf;
206}
207
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208// -------------------------------------------------------------------------
209// string parameters lib
210// -------------------------------------------------------------------------
211
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212// -------------------------------------------------------------------------
213// line - param line
214// bg, en - symbol numbers in param line of beginning an ending parameter
215// paramnum - param number (from 0)
216// -------------------------------------------------------------------------
217int param_getptr(const char *line, int *bg, int *en, int paramnum)
218{
219 int i;
220 int len = strlen(line);
221
222 *bg = 0;
223 *en = 0;
224
225 // skip spaces
226 while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++;
227 if (*bg >= len) {
228 return 1;
229 }
230
231 for (i = 0; i < paramnum; i++) {
232 while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++;
233 while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++;
234
235 if (line[*bg] == '\0') return 1;
236 }
237
238 *en = *bg;
239 while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++;
240
241 (*en)--;
242
243 return 0;
244}
245
31abe49f 246
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247char param_getchar(const char *line, int paramnum)
248{
249 int bg, en;
250
251 if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
252
253 return line[bg];
254}
255
256uint8_t param_get8(const char *line, int paramnum)
257{
258 return param_get8ex(line, paramnum, 10, 0);
259}
260
f6d9fb17 261/**
31abe49f 262 * @brief Reads a decimal integer (actually, 0-254, not 255)
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263 * @param line
264 * @param paramnum
31abe49f 265 * @return -1 if error
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266 */
267uint8_t param_getdec(const char *line, int paramnum, uint8_t *destination)
268{
31abe49f 269 uint8_t val = param_get8ex(line, paramnum, 255, 10);
31abe49f 270 if( (int8_t) val == -1) return 1;
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271 (*destination) = val;
272 return 0;
273}
274/**
275 * @brief Checks if param is decimal
276 * @param line
277 * @param paramnum
278 * @return
279 */
280uint8_t param_isdec(const char *line, int paramnum)
281{
282 int bg, en;
283 //TODO, check more thorougly
284 if (!param_getptr(line, &bg, &en, paramnum)) return 1;
285 // return strtoul(&line[bg], NULL, 10) & 0xff;
286
287 return 0;
288}
289
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290uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base)
291{
292 int bg, en;
293
294 if (!param_getptr(line, &bg, &en, paramnum))
6c6d1ac1 295 return strtoul(&line[bg], NULL, base) & 0xff;
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296 else
297 return deflt;
298}
299
300uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base)
301{
302 int bg, en;
303
304 if (!param_getptr(line, &bg, &en, paramnum))
6c6d1ac1 305 return strtoul(&line[bg], NULL, base);
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306 else
307 return deflt;
308}
309
310uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
311{
312 int bg, en;
313
314 if (!param_getptr(line, &bg, &en, paramnum))
6c6d1ac1 315 return strtoull(&line[bg], NULL, base);
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316 else
317 return deflt;
318
319 return 0;
320}
321
322int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
323{
324 int bg, en, temp, i;
325
326 if (hexcnt % 2)
327 return 1;
328
329 if (param_getptr(line, &bg, &en, paramnum)) return 1;
330
331 if (en - bg + 1 != hexcnt)
332 return 1;
333
334 for(i = 0; i < hexcnt; i += 2) {
335 if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) ) return 1;
336
337 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
338 data[i / 2] = temp & 0xff;
339 }
340
341 return 0;
342}
1a5a73ab 343int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *hexcnt)
344{
345 int bg, en, temp, i;
346
347 //if (hexcnt % 2)
348 // return 1;
349
350 if (param_getptr(line, &bg, &en, paramnum)) return 1;
351
352 *hexcnt = en - bg + 1;
353 if (*hexcnt % 2) //error if not complete hex bytes
354 return 1;
aea4d766 355
1a5a73ab 356 for(i = 0; i < *hexcnt; i += 2) {
357 if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) ) return 1;
358
359 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
360 data[i / 2] = temp & 0xff;
361 }
362
363 return 0;
364}
aea4d766 365int param_getstr(const char *line, int paramnum, char * str)
366{
367 int bg, en;
368
369 if (param_getptr(line, &bg, &en, paramnum)) return 0;
370
371 memcpy(str, line + bg, en - bg + 1);
372 str[en - bg + 1] = 0;
373
374 return en - bg + 1;
375}
79544b28 376
377/*
378The following methods comes from Rfidler sourcecode.
379https://github.com/ApertureLabsLtd/RFIDler/blob/master/firmware/Pic32/RFIDler.X/src/
380*/
381
382// convert hex to sequence of 0/1 bit values
383// returns number of bits converted
384int hextobinarray(char *target, char *source)
385{
386 int length, i, count= 0;
387 char x;
388
389 length = strlen(source);
390 // process 4 bits (1 hex digit) at a time
391 while(length--)
392 {
393 x= *(source++);
394 // capitalize
395 if (x >= 'a' && x <= 'f')
396 x -= 32;
397 // convert to numeric value
398 if (x >= '0' && x <= '9')
399 x -= '0';
400 else if (x >= 'A' && x <= 'F')
401 x -= 'A' - 10;
402 else
403 return 0;
404 // output
405 for(i= 0 ; i < 4 ; ++i, ++count)
406 *(target++)= (x >> (3 - i)) & 1;
407 }
408
409 return count;
410}
411
412// convert hex to human readable binary string
413int hextobinstring(char *target, char *source)
414{
415 int length;
416
417 if(!(length= hextobinarray(target, source)))
418 return 0;
419 binarraytobinstring(target, target, length);
420 return length;
421}
422
423// convert binary array of 0x00/0x01 values to hex (safe to do in place as target will always be shorter than source)
424// return number of bits converted
1c4c0b06 425int binarraytohex(char *target,char *source, int length)
79544b28 426{
427 unsigned char i, x;
428 int j = length;
429
430 if(j % 4)
431 return 0;
432
433 while(j)
434 {
435 for(i= x= 0 ; i < 4 ; ++i)
436 x += ( source[i] << (3 - i));
437 sprintf(target,"%X", x);
438 ++target;
439 source += 4;
440 j -= 4;
441 }
442 return length;
443}
444
445// convert binary array to human readable binary
446void binarraytobinstring(char *target, char *source, int length)
447{
448 int i;
449
450 for(i= 0 ; i < length ; ++i)
451 *(target++)= *(source++) + '0';
452 *target= '\0';
453}
454
455// return parity bit required to match type
709665b5 456uint8_t GetParity( uint8_t *bits, uint8_t type, int length)
79544b28 457{
458 int x;
459
460 for(x= 0 ; length > 0 ; --length)
461 x += bits[length - 1];
462 x %= 2;
463
464 return x ^ type;
465}
466
467// add HID parity to binary array: EVEN prefix for 1st half of ID, ODD suffix for 2nd half
709665b5 468void wiegand_add_parity(uint8_t *target, uint8_t *source, uint8_t length)
79544b28 469{
470 *(target++)= GetParity(source, EVEN, length / 2);
471 memcpy(target, source, length);
472 target += length;
473 *(target)= GetParity(source + length / 2, ODD, length / 2);
474}
4973f23d 475
476void xor(unsigned char *dst, unsigned char *src, size_t len) {
477 for( ; len > 0; len--,dst++,src++)
478 *dst ^= *src;
479}
480
481int32_t le24toh (uint8_t data[3]) {
482 return (data[2] << 16) | (data[1] << 8) | data[0];
483}
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