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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
13 #ifndef _WIN32
14 #include <termios.h>
15 #include <sys/ioctl.h>
16
17 int 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>
43 int ukbhit(void) {
44 return kbhit();
45 }
46 #endif
47
48 // log files functions
49 void AddLogLine(char *file, char *extData, char *c) {
50 FILE *fLog = NULL;
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");
59 if (!fLog) {
60 printf("Could not append log file %s", filename);
61 return;
62 }
63
64 fprintf(fLog, "%s", extData);
65 fprintf(fLog, "%s\n", c);
66 fclose(fLog);
67 }
68
69 void AddLogHex(char *fileName, char *extData, const uint8_t * data, const size_t len){
70 AddLogLine(fileName, extData, sprint_hex(data, len));
71 }
72
73 void 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
79 void 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
90 void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount) {
91 char * fnameptr = fileName;
92 memset(fileName, 0x00, 200);
93
94 for (int j = 0; j < byteCount; j++, fnameptr += 2)
95 sprintf(fnameptr, "%02x", uid[j]);
96 sprintf(fnameptr, "%s", ext);
97 }
98
99 // printing and converting functions
100
101 void 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
111 char * sprint_hex(const uint8_t * data, const size_t len) {
112
113 int maxLen = ( len > 1024/3) ? 1024/3 : len;
114 static char buf[1024];
115 char * tmp = buf;
116 size_t i;
117
118 for (i=0; i < maxLen; ++i, tmp += 3)
119 sprintf(tmp, "%02x ", data[i]);
120
121 return buf;
122 }
123
124 char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) {
125
126 int maxLen = ( len > 1024) ? 1024 : len;
127 static char buf[1024];
128 char *tmp = buf;
129
130 for (size_t i=0; i < maxLen; ++i){
131 sprintf(tmp++, "%u", data[i]);
132 if (breaks > 0 && !((i+1) % breaks))
133 sprintf(tmp++, "%s","\n");
134 }
135
136 return buf;
137 }
138
139 char *sprint_bin(const uint8_t *data, const size_t len) {
140 return sprint_bin_break(data, len, 0);
141 }
142 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
143 {
144 while (len--) {
145 dest[len] = (uint8_t) n;
146 n >>= 8;
147 }
148 }
149
150 uint64_t bytes_to_num(uint8_t* src, size_t len)
151 {
152 uint64_t num = 0;
153 while (len--)
154 {
155 num = (num << 8) | (*src);
156 src++;
157 }
158 return num;
159 }
160
161 // aa,bb,cc,dd,ee,ff,gg,hh, ii,jj,kk,ll,mm,nn,oo,pp
162 // to
163 // hh,gg,ff,ee,dd,cc,bb,aa, pp,oo,nn,mm,ll,kk,jj,ii
164 // up to 64 bytes or 512 bits
165 uint8_t *SwapEndian64(uint8_t *src, size_t len){
166 static uint8_t temp[64]={0};
167 for (uint8_t block=0; block < (uint8_t)len/8; block++){
168 for (size_t i = 0; i < 8; i++){
169 temp[i+(8*block)] = src[(7-i)+(8*block)];
170 }
171 }
172 return temp;
173 }
174
175 //assumes little endian
176 char * printBits(size_t const size, void const * const ptr)
177 {
178 unsigned char *b = (unsigned char*) ptr;
179 unsigned char byte;
180 static char buf[1024];
181 char * tmp = buf;
182 int i, j;
183
184 for (i=size-1;i>=0;i--)
185 {
186 for (j=7;j>=0;j--)
187 {
188 byte = b[i] & (1<<j);
189 byte >>= j;
190 sprintf(tmp, "%u", byte);
191 tmp++;
192 }
193 }
194 return buf;
195 }
196
197 // -------------------------------------------------------------------------
198 // string parameters lib
199 // -------------------------------------------------------------------------
200
201 // -------------------------------------------------------------------------
202 // line - param line
203 // bg, en - symbol numbers in param line of beginning an ending parameter
204 // paramnum - param number (from 0)
205 // -------------------------------------------------------------------------
206 int param_getptr(const char *line, int *bg, int *en, int paramnum)
207 {
208 int i;
209 int len = strlen(line);
210
211 *bg = 0;
212 *en = 0;
213
214 // skip spaces
215 while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++;
216 if (*bg >= len) {
217 return 1;
218 }
219
220 for (i = 0; i < paramnum; i++) {
221 while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++;
222 while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++;
223
224 if (line[*bg] == '\0') return 1;
225 }
226
227 *en = *bg;
228 while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++;
229
230 (*en)--;
231
232 return 0;
233 }
234
235
236 char param_getchar(const char *line, int paramnum)
237 {
238 int bg, en;
239
240 if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
241
242 return line[bg];
243 }
244
245 uint8_t param_get8(const char *line, int paramnum)
246 {
247 return param_get8ex(line, paramnum, 10, 0);
248 }
249
250 /**
251 * @brief Reads a decimal integer (actually, 0-254, not 255)
252 * @param line
253 * @param paramnum
254 * @return -1 if error
255 */
256 uint8_t param_getdec(const char *line, int paramnum, uint8_t *destination)
257 {
258 uint8_t val = param_get8ex(line, paramnum, 255, 10);
259 if( (int8_t) val == -1) return 1;
260 (*destination) = val;
261 return 0;
262 }
263 /**
264 * @brief Checks if param is decimal
265 * @param line
266 * @param paramnum
267 * @return
268 */
269 uint8_t param_isdec(const char *line, int paramnum)
270 {
271 int bg, en;
272 //TODO, check more thorougly
273 if (!param_getptr(line, &bg, &en, paramnum)) return 1;
274 // return strtoul(&line[bg], NULL, 10) & 0xff;
275
276 return 0;
277 }
278
279 uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base)
280 {
281 int bg, en;
282
283 if (!param_getptr(line, &bg, &en, paramnum))
284 return strtoul(&line[bg], NULL, base) & 0xff;
285 else
286 return deflt;
287 }
288
289 uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base)
290 {
291 int bg, en;
292
293 if (!param_getptr(line, &bg, &en, paramnum))
294 return strtoul(&line[bg], NULL, base);
295 else
296 return deflt;
297 }
298
299 uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
300 {
301 int bg, en;
302
303 if (!param_getptr(line, &bg, &en, paramnum))
304 return strtoull(&line[bg], NULL, base);
305 else
306 return deflt;
307
308 return 0;
309 }
310
311 int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
312 {
313 int bg, en, temp, i;
314
315 if (hexcnt % 2)
316 return 1;
317
318 if (param_getptr(line, &bg, &en, paramnum)) return 1;
319
320 if (en - bg + 1 != hexcnt)
321 return 1;
322
323 for(i = 0; i < hexcnt; i += 2) {
324 if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) ) return 1;
325
326 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
327 data[i / 2] = temp & 0xff;
328 }
329
330 return 0;
331 }
332
333 int param_getstr(const char *line, int paramnum, char * str)
334 {
335 int bg, en;
336
337 if (param_getptr(line, &bg, &en, paramnum)) return 0;
338
339 memcpy(str, line + bg, en - bg + 1);
340 str[en - bg + 1] = 0;
341
342 return en - bg + 1;
343 }
344
345 /*
346 The following methods comes from Rfidler sourcecode.
347 https://github.com/ApertureLabsLtd/RFIDler/blob/master/firmware/Pic32/RFIDler.X/src/
348 */
349
350 // convert hex to sequence of 0/1 bit values
351 // returns number of bits converted
352 int hextobinarray(char *target, char *source)
353 {
354 int length, i, count= 0;
355 char x;
356
357 length = strlen(source);
358 // process 4 bits (1 hex digit) at a time
359 while(length--)
360 {
361 x= *(source++);
362 // capitalize
363 if (x >= 'a' && x <= 'f')
364 x -= 32;
365 // convert to numeric value
366 if (x >= '0' && x <= '9')
367 x -= '0';
368 else if (x >= 'A' && x <= 'F')
369 x -= 'A' - 10;
370 else
371 return 0;
372 // output
373 for(i= 0 ; i < 4 ; ++i, ++count)
374 *(target++)= (x >> (3 - i)) & 1;
375 }
376
377 return count;
378 }
379
380 // convert hex to human readable binary string
381 int hextobinstring(char *target, char *source)
382 {
383 int length;
384
385 if(!(length= hextobinarray(target, source)))
386 return 0;
387 binarraytobinstring(target, target, length);
388 return length;
389 }
390
391 // convert binary array of 0x00/0x01 values to hex (safe to do in place as target will always be shorter than source)
392 // return number of bits converted
393 int binarraytohex(char *target, char *source, int length)
394 {
395 unsigned char i, x;
396 int j = length;
397
398 if(j % 4)
399 return 0;
400
401 while(j)
402 {
403 for(i= x= 0 ; i < 4 ; ++i)
404 x += ( source[i] << (3 - i));
405 sprintf(target,"%X", x);
406 ++target;
407 source += 4;
408 j -= 4;
409 }
410 return length;
411 }
412
413 // convert binary array to human readable binary
414 void binarraytobinstring(char *target, char *source, int length)
415 {
416 int i;
417
418 for(i= 0 ; i < length ; ++i)
419 *(target++)= *(source++) + '0';
420 *target= '\0';
421 }
422
423 // return parity bit required to match type
424 uint8_t GetParity( char *bits, uint8_t type, int length)
425 {
426 int x;
427
428 for(x= 0 ; length > 0 ; --length)
429 x += bits[length - 1];
430 x %= 2;
431
432 return x ^ type;
433 }
434
435 // add HID parity to binary array: EVEN prefix for 1st half of ID, ODD suffix for 2nd half
436 void wiegand_add_parity(char *target, char *source, char length)
437 {
438 *(target++)= GetParity(source, EVEN, length / 2);
439 memcpy(target, source, length);
440 target += length;
441 *(target)= GetParity(source + length / 2, ODD, length / 2);
442 }
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