| 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 | } |
| 447 | |
| 448 | void xor(unsigned char * dst, unsigned char * src, size_t len) { |
| 449 | for( ; len > 0; len--,dst++,src++) |
| 450 | *dst ^= *src; |
| 451 | } |
| 452 | |
| 453 | int32_t le24toh (uint8_t data[3]) { |
| 454 | return (data[2] << 16) | (data[1] << 8) | data[0]; |
| 455 | } |