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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
f9848fd6 163// aa,bb,cc,dd,ee,ff,gg,hh, ii,jj,kk,ll,mm,nn,oo,pp
164// to
165// hh,gg,ff,ee,dd,cc,bb,aa, pp,oo,nn,mm,ll,kk,jj,ii
166// up to 64 bytes or 512 bits
2b3af97d 167uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockSize){
168 static uint8_t buf[64];
169 memset(buf, 0x00, 64);
170 uint8_t *tmp = buf;
171 for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
172 for (size_t i = 0; i < blockSize; i++){
173 tmp[i+(blockSize*block)] = src[(blockSize-1-i)+(blockSize*block)];
f9848fd6 174 }
175 }
2b3af97d 176 return tmp;
f9848fd6 177}
178
79544b28 179//assumes little endian
180char * printBits(size_t const size, void const * const ptr)
181{
182 unsigned char *b = (unsigned char*) ptr;
183 unsigned char byte;
184 static char buf[1024];
185 char * tmp = buf;
186 int i, j;
187
188 for (i=size-1;i>=0;i--)
189 {
190 for (j=7;j>=0;j--)
191 {
192 byte = b[i] & (1<<j);
193 byte >>= j;
194 sprintf(tmp, "%u", byte);
195 tmp++;
196 }
197 }
198 return buf;
199}
200
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201// -------------------------------------------------------------------------
202// string parameters lib
203// -------------------------------------------------------------------------
204
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205// -------------------------------------------------------------------------
206// line - param line
207// bg, en - symbol numbers in param line of beginning an ending parameter
208// paramnum - param number (from 0)
209// -------------------------------------------------------------------------
210int param_getptr(const char *line, int *bg, int *en, int paramnum)
211{
212 int i;
213 int len = strlen(line);
214
215 *bg = 0;
216 *en = 0;
217
218 // skip spaces
219 while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++;
220 if (*bg >= len) {
221 return 1;
222 }
223
224 for (i = 0; i < paramnum; i++) {
225 while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++;
226 while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++;
227
228 if (line[*bg] == '\0') return 1;
229 }
230
231 *en = *bg;
232 while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++;
233
234 (*en)--;
235
236 return 0;
237}
238
31abe49f 239
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240char param_getchar(const char *line, int paramnum)
241{
242 int bg, en;
243
244 if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
245
246 return line[bg];
247}
248
249uint8_t param_get8(const char *line, int paramnum)
250{
251 return param_get8ex(line, paramnum, 10, 0);
252}
253
f6d9fb17 254/**
31abe49f 255 * @brief Reads a decimal integer (actually, 0-254, not 255)
f6d9fb17
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256 * @param line
257 * @param paramnum
31abe49f 258 * @return -1 if error
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259 */
260uint8_t param_getdec(const char *line, int paramnum, uint8_t *destination)
261{
31abe49f 262 uint8_t val = param_get8ex(line, paramnum, 255, 10);
31abe49f 263 if( (int8_t) val == -1) return 1;
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264 (*destination) = val;
265 return 0;
266}
267/**
268 * @brief Checks if param is decimal
269 * @param line
270 * @param paramnum
271 * @return
272 */
273uint8_t param_isdec(const char *line, int paramnum)
274{
275 int bg, en;
276 //TODO, check more thorougly
277 if (!param_getptr(line, &bg, &en, paramnum)) return 1;
278 // return strtoul(&line[bg], NULL, 10) & 0xff;
279
280 return 0;
281}
282
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283uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base)
284{
285 int bg, en;
286
287 if (!param_getptr(line, &bg, &en, paramnum))
6c6d1ac1 288 return strtoul(&line[bg], NULL, base) & 0xff;
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289 else
290 return deflt;
291}
292
293uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base)
294{
295 int bg, en;
296
297 if (!param_getptr(line, &bg, &en, paramnum))
6c6d1ac1 298 return strtoul(&line[bg], NULL, base);
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299 else
300 return deflt;
301}
302
303uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
304{
305 int bg, en;
306
307 if (!param_getptr(line, &bg, &en, paramnum))
6c6d1ac1 308 return strtoull(&line[bg], NULL, base);
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309 else
310 return deflt;
311
312 return 0;
313}
314
315int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
316{
317 int bg, en, temp, i;
318
319 if (hexcnt % 2)
320 return 1;
321
322 if (param_getptr(line, &bg, &en, paramnum)) return 1;
323
324 if (en - bg + 1 != hexcnt)
325 return 1;
326
327 for(i = 0; i < hexcnt; i += 2) {
328 if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) ) return 1;
329
330 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
331 data[i / 2] = temp & 0xff;
332 }
333
334 return 0;
335}
1a5a73ab 336int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *hexcnt)
337{
338 int bg, en, temp, i;
339
340 //if (hexcnt % 2)
341 // return 1;
342
343 if (param_getptr(line, &bg, &en, paramnum)) return 1;
344
345 *hexcnt = en - bg + 1;
346 if (*hexcnt % 2) //error if not complete hex bytes
347 return 1;
aea4d766 348
1a5a73ab 349 for(i = 0; i < *hexcnt; i += 2) {
350 if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) ) return 1;
351
352 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
353 data[i / 2] = temp & 0xff;
354 }
355
356 return 0;
357}
aea4d766 358int param_getstr(const char *line, int paramnum, char * str)
359{
360 int bg, en;
361
362 if (param_getptr(line, &bg, &en, paramnum)) return 0;
363
364 memcpy(str, line + bg, en - bg + 1);
365 str[en - bg + 1] = 0;
366
367 return en - bg + 1;
368}
79544b28 369
370/*
371The following methods comes from Rfidler sourcecode.
372https://github.com/ApertureLabsLtd/RFIDler/blob/master/firmware/Pic32/RFIDler.X/src/
373*/
374
375// convert hex to sequence of 0/1 bit values
376// returns number of bits converted
377int hextobinarray(char *target, char *source)
378{
379 int length, i, count= 0;
380 char x;
381
382 length = strlen(source);
383 // process 4 bits (1 hex digit) at a time
384 while(length--)
385 {
386 x= *(source++);
387 // capitalize
388 if (x >= 'a' && x <= 'f')
389 x -= 32;
390 // convert to numeric value
391 if (x >= '0' && x <= '9')
392 x -= '0';
393 else if (x >= 'A' && x <= 'F')
394 x -= 'A' - 10;
395 else
396 return 0;
397 // output
398 for(i= 0 ; i < 4 ; ++i, ++count)
399 *(target++)= (x >> (3 - i)) & 1;
400 }
401
402 return count;
403}
404
405// convert hex to human readable binary string
406int hextobinstring(char *target, char *source)
407{
408 int length;
409
410 if(!(length= hextobinarray(target, source)))
411 return 0;
412 binarraytobinstring(target, target, length);
413 return length;
414}
415
416// convert binary array of 0x00/0x01 values to hex (safe to do in place as target will always be shorter than source)
417// return number of bits converted
1c4c0b06 418int binarraytohex(char *target,char *source, int length)
79544b28 419{
420 unsigned char i, x;
421 int j = length;
422
423 if(j % 4)
424 return 0;
425
426 while(j)
427 {
428 for(i= x= 0 ; i < 4 ; ++i)
429 x += ( source[i] << (3 - i));
430 sprintf(target,"%X", x);
431 ++target;
432 source += 4;
433 j -= 4;
434 }
435 return length;
436}
437
438// convert binary array to human readable binary
439void binarraytobinstring(char *target, char *source, int length)
440{
441 int i;
442
443 for(i= 0 ; i < length ; ++i)
444 *(target++)= *(source++) + '0';
445 *target= '\0';
446}
447
448// return parity bit required to match type
449uint8_t GetParity( char *bits, uint8_t type, int length)
450{
451 int x;
452
453 for(x= 0 ; length > 0 ; --length)
454 x += bits[length - 1];
455 x %= 2;
456
457 return x ^ type;
458}
459
460// add HID parity to binary array: EVEN prefix for 1st half of ID, ODD suffix for 2nd half
461void wiegand_add_parity(char *target, char *source, char length)
462{
463 *(target++)= GetParity(source, EVEN, length / 2);
464 memcpy(target, source, length);
465 target += length;
466 *(target)= GetParity(source + length / 2, ODD, length / 2);
467}
4973f23d 468
469void xor(unsigned char *dst, unsigned char *src, size_t len) {
470 for( ; len > 0; len--,dst++,src++)
471 *dst ^= *src;
472}
473
474int32_t le24toh (uint8_t data[3]) {
475 return (data[2] << 16) | (data[1] << 8) | data[0];
476}
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