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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 memset(buf, 0x00, 1024);
116 char * tmp = buf;
117 size_t i;
118
119 for (i=0; i < maxLen; ++i, tmp += 3)
120 sprintf(tmp, "%02x ", data[i]);
121
122 return buf;
123 }
124
125 char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) {
126
127 int maxLen = ( len > 1020) ? 1020 : len;
128 static char buf[1024];
129 memset(buf, 0x00, 1024);
130 char *tmp = buf;
131
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 }
137
138 return buf;
139 }
140
141 char *sprint_bin(const uint8_t *data, const size_t len) {
142 return sprint_bin_break(data, len, 0);
143 }
144 void 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
152 uint64_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 }
162
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
167 uint8_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)];
174 }
175 }
176 return tmp;
177 }
178
179 //assumes little endian
180 char * 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
201 // -------------------------------------------------------------------------
202 // string parameters lib
203 // -------------------------------------------------------------------------
204
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 // -------------------------------------------------------------------------
210 int 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
239
240 char 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
249 uint8_t param_get8(const char *line, int paramnum)
250 {
251 return param_get8ex(line, paramnum, 10, 0);
252 }
253
254 /**
255 * @brief Reads a decimal integer (actually, 0-254, not 255)
256 * @param line
257 * @param paramnum
258 * @return -1 if error
259 */
260 uint8_t param_getdec(const char *line, int paramnum, uint8_t *destination)
261 {
262 uint8_t val = param_get8ex(line, paramnum, 255, 10);
263 if( (int8_t) val == -1) return 1;
264 (*destination) = val;
265 return 0;
266 }
267 /**
268 * @brief Checks if param is decimal
269 * @param line
270 * @param paramnum
271 * @return
272 */
273 uint8_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
283 uint8_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))
288 return strtoul(&line[bg], NULL, base) & 0xff;
289 else
290 return deflt;
291 }
292
293 uint32_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))
298 return strtoul(&line[bg], NULL, base);
299 else
300 return deflt;
301 }
302
303 uint64_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))
308 return strtoull(&line[bg], NULL, base);
309 else
310 return deflt;
311
312 return 0;
313 }
314
315 int 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 }
336
337 int param_getstr(const char *line, int paramnum, char * str)
338 {
339 int bg, en;
340
341 if (param_getptr(line, &bg, &en, paramnum)) return 0;
342
343 memcpy(str, line + bg, en - bg + 1);
344 str[en - bg + 1] = 0;
345
346 return en - bg + 1;
347 }
348
349 /*
350 The following methods comes from Rfidler sourcecode.
351 https://github.com/ApertureLabsLtd/RFIDler/blob/master/firmware/Pic32/RFIDler.X/src/
352 */
353
354 // convert hex to sequence of 0/1 bit values
355 // returns number of bits converted
356 int hextobinarray(char *target, char *source)
357 {
358 int length, i, count= 0;
359 char x;
360
361 length = strlen(source);
362 // process 4 bits (1 hex digit) at a time
363 while(length--)
364 {
365 x= *(source++);
366 // capitalize
367 if (x >= 'a' && x <= 'f')
368 x -= 32;
369 // convert to numeric value
370 if (x >= '0' && x <= '9')
371 x -= '0';
372 else if (x >= 'A' && x <= 'F')
373 x -= 'A' - 10;
374 else
375 return 0;
376 // output
377 for(i= 0 ; i < 4 ; ++i, ++count)
378 *(target++)= (x >> (3 - i)) & 1;
379 }
380
381 return count;
382 }
383
384 // convert hex to human readable binary string
385 int hextobinstring(char *target, char *source)
386 {
387 int length;
388
389 if(!(length= hextobinarray(target, source)))
390 return 0;
391 binarraytobinstring(target, target, length);
392 return length;
393 }
394
395 // convert binary array of 0x00/0x01 values to hex (safe to do in place as target will always be shorter than source)
396 // return number of bits converted
397 int binarraytohex(char *target, char *source, int length)
398 {
399 unsigned char i, x;
400 int j = length;
401
402 if(j % 4)
403 return 0;
404
405 while(j)
406 {
407 for(i= x= 0 ; i < 4 ; ++i)
408 x += ( source[i] << (3 - i));
409 sprintf(target,"%X", x);
410 ++target;
411 source += 4;
412 j -= 4;
413 }
414 return length;
415 }
416
417 // convert binary array to human readable binary
418 void binarraytobinstring(char *target, char *source, int length)
419 {
420 int i;
421
422 for(i= 0 ; i < length ; ++i)
423 *(target++)= *(source++) + '0';
424 *target= '\0';
425 }
426
427 // return parity bit required to match type
428 uint8_t GetParity( char *bits, uint8_t type, int length)
429 {
430 int x;
431
432 for(x= 0 ; length > 0 ; --length)
433 x += bits[length - 1];
434 x %= 2;
435
436 return x ^ type;
437 }
438
439 // add HID parity to binary array: EVEN prefix for 1st half of ID, ODD suffix for 2nd half
440 void wiegand_add_parity(char *target, char *source, char length)
441 {
442 *(target++)= GetParity(source, EVEN, length / 2);
443 memcpy(target, source, length);
444 target += length;
445 *(target)= GetParity(source + length / 2, ODD, length / 2);
446 }
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