git.zerfleddert.de Git - proxmark3-svn/blob - client/cmdhf14a.c

   1 //-----------------------------------------------------------------------------
   2 // 2011, Merlok
   3 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>, Hagen Fritsch
   4 //
   5 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   6 // at your option, any later version. See the LICENSE.txt file for the text of
   7 // the license.
   8 //-----------------------------------------------------------------------------
   9 // High frequency ISO14443A commands
  10 //-----------------------------------------------------------------------------
  11
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <string.h>
  15 #include <unistd.h>
  16 #include "util.h"
  17 #include "iso14443crc.h"
  18 #include "data.h"
  19 #include "proxmark3.h"
  20 #include "ui.h"
  21 #include "cmdparser.h"
  22 #include "cmdhf14a.h"
  23 #include "common.h"
  24 #include "cmdmain.h"
  25 #include "mifare.h"
  26
  27 static int CmdHelp(const char *Cmd);
  28 static void waitCmd(uint8_t iLen);
  29
  30 int CmdHF14AList(const char *Cmd)
  31 {
  32         bool ShowWaitCycles = false;
  33         char param = param_getchar(Cmd, 0);
  34
  35         if (param == 'h' || (param != 0 && param != 'f')) {
  36                 PrintAndLog("List data in trace buffer.");
  37                 PrintAndLog("Usage:  hf 14a list [f]");
  38                 PrintAndLog("f - show frame delay times as well");
  39                 PrintAndLog("sample: hf 14a list f");
  40                 return 0;
  41         }
  42
  43         if (param == 'f') {
  44                 ShowWaitCycles = true;
  45         }
  46
  47 // for the time being. Need better Bigbuf handling.
  48 #define TRACE_SIZE 3000
  49
  50         uint8_t trace[TRACE_SIZE];
  51         GetFromBigBuf(trace, TRACE_SIZE, 0);
  52         WaitForResponse(CMD_ACK, NULL);
  53
  54         PrintAndLog("Recorded Activity");
  55         PrintAndLog("");
  56         PrintAndLog("Start = Start of Start Bit, End = End of last modulation. Src = Source of Transfer");
  57         PrintAndLog("All times are in carrier periods (1/13.56Mhz)");
  58         PrintAndLog("");
  59         PrintAndLog("     Start |       End | Src | Data");
  60         PrintAndLog("-----------|-----------|-----|--------");
  61
  62         uint16_t tracepos = 0;
  63         uint16_t duration;
  64         uint16_t data_len;
  65         uint16_t parity_len;
  66         bool isResponse;
  67         uint32_t timestamp;
  68         uint32_t first_timestamp;
  69         uint32_t EndOfTransmissionTimestamp;
  70
  71         for (;;) {
  72
  73                 if(tracepos >= TRACE_SIZE) {
  74                         break;
  75                 }
  76
  77                 timestamp = *((uint32_t *)(trace + tracepos));
  78                 if(tracepos == 0) {
  79                         first_timestamp = timestamp;
  80                 }
  81                 tracepos += 4;
  82                 duration = *((uint16_t *)(trace + tracepos));
  83                 tracepos += 2;
  84                 data_len = *((uint16_t *)(trace + tracepos));
  85                 tracepos += 2;
  86
  87                 if (data_len & 0x8000) {
  88                   data_len &= 0x7fff;
  89                   isResponse = true;
  90                 } else {
  91                   isResponse = false;
  92                 }
  93
  94                 parity_len = (data_len-1)/8 + 1;
  95
  96                 if (tracepos + data_len + parity_len >= TRACE_SIZE) {
  97                         break;
  98                 }
  99
 100                 uint8_t *frame = trace + tracepos;
 101                 tracepos += data_len;
 102                 uint8_t *parityBytes = trace + tracepos;
 103                 tracepos += parity_len;
 104
 105                 // Break and stick with current result if buffer was not completely full
 106                 if (timestamp == 0x44444444) break;
 107
 108                 char line[1000] = "";
 109                 int j;
 110                 for (j = 0; j < data_len; j++) {
 111                         int oddparity = 0x01;
 112                         int k;
 113
 114                         for (k=0;k<8;k++) {
 115                                 oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
 116                         }
 117
 118                         uint8_t parityBits = parityBytes[j>>3];
 119                         if (isResponse && (oddparity != ((parityBits >> (7-(j&0x0007))) & 0x01))) {
 120                                 sprintf(line+(j*4), "%02x!  ", frame[j]);
 121                         } else {
 122                                 sprintf(line+(j*4), "%02x   ", frame[j]);
 123                         }
 124                 }
 125
 126                 char crc[6] = "";
 127                 if (data_len > 2) {
 128                 uint8_t b1, b2;
 129                         ComputeCrc14443(CRC_14443_A, frame, data_len-2, &b1, &b2);
 130                         if (b1 != frame[data_len-2] || b2 != frame[data_len-1]) {
 131                                 sprintf(crc, (isResponse & (data_len < 6)) ? "" : " !crc");
 132                         } else {
 133                                 sprintf(crc, "");
 134                         }
 135                 }
 136
 137                 EndOfTransmissionTimestamp = timestamp + duration;
 138
 139                 PrintAndLog(" %9d | %9d | %s | %s %s",
 140                         (timestamp - first_timestamp),
 141                         (EndOfTransmissionTimestamp - first_timestamp),
 142                         (isResponse ? "Tag" : "Rdr"),
 143                         line,
 144                         crc);
 145
 146                 bool next_isResponse = *((uint16_t *)(trace + tracepos + 6)) & 0x8000;
 147
 148                 if (ShowWaitCycles && !isResponse && next_isResponse) {
 149                         uint32_t next_timestamp = *((uint32_t *)(trace + tracepos));
 150                         if (next_timestamp != 0x44444444) {
 151                                 PrintAndLog(" %9d | %9d | %s | fdt (Frame Delay Time): %d",
 152                                         (EndOfTransmissionTimestamp - first_timestamp),
 153                                         (next_timestamp - first_timestamp),
 154                                         "   ",
 155                                         (next_timestamp - EndOfTransmissionTimestamp));
 156                         }
 157                 }
 158
 159         }
 160
 161         return 0;
 162 }
 163
 164 void iso14a_set_timeout(uint32_t timeout) {
 165         UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_SET_TIMEOUT, 0, timeout}};
 166         SendCommand(&c);
 167 }
 168
 169 int CmdHF14AReader(const char *Cmd)
 170 {
 171         UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_NO_DISCONNECT, 0, 0}};
 172         SendCommand(&c);
 173
 174         UsbCommand resp;
 175         WaitForResponse(CMD_ACK,&resp);
 176
 177         iso14a_card_select_t card;
 178         memcpy(&card, (iso14a_card_select_t *)resp.d.asBytes, sizeof(iso14a_card_select_t));
 179
 180         uint64_t select_status = resp.arg[0];           // 0: couldn't read, 1: OK, with ATS, 2: OK, no ATS
 181
 182         if(select_status == 0) {
 183                 PrintAndLog("iso14443a card select failed");
 184                 return 0;
 185         }
 186
 187         PrintAndLog("ATQA : %02x %02x", card.atqa[1], card.atqa[0]);
 188         PrintAndLog(" UID : %s", sprint_hex(card.uid, card.uidlen));
 189         PrintAndLog(" SAK : %02x [%d]", card.sak, resp.arg[0]);
 190
 191         switch (card.sak) {
 192                 case 0x00: PrintAndLog("TYPE : NXP MIFARE Ultralight | Ultralight C"); break;
 193                 case 0x04: PrintAndLog("TYPE : NXP MIFARE (various !DESFire !DESFire EV1)"); break;
 194                 case 0x08: PrintAndLog("TYPE : NXP MIFARE CLASSIC 1k | Plus 2k SL1"); break;
 195                 case 0x09: PrintAndLog("TYPE : NXP MIFARE Mini 0.3k"); break;
 196                 case 0x10: PrintAndLog("TYPE : NXP MIFARE Plus 2k SL2"); break;
 197                 case 0x11: PrintAndLog("TYPE : NXP MIFARE Plus 4k SL2"); break;
 198                 case 0x18: PrintAndLog("TYPE : NXP MIFARE Classic 4k | Plus 4k SL1"); break;
 199                 case 0x20: PrintAndLog("TYPE : NXP MIFARE DESFire 4k | DESFire EV1 2k/4k/8k | Plus 2k/4k SL3 | JCOP 31/41"); break;
 200                 case 0x24: PrintAndLog("TYPE : NXP MIFARE DESFire | DESFire EV1"); break;
 201                 case 0x28: PrintAndLog("TYPE : JCOP31 or JCOP41 v2.3.1"); break;
 202                 case 0x38: PrintAndLog("TYPE : Nokia 6212 or 6131 MIFARE CLASSIC 4K"); break;
 203                 case 0x88: PrintAndLog("TYPE : Infineon MIFARE CLASSIC 1K"); break;
 204                 case 0x98: PrintAndLog("TYPE : Gemplus MPCOS"); break;
 205                 default: ;
 206         }
 207
 208
 209         // try to request ATS even if tag claims not to support it
 210         if (select_status == 2) {
 211                 uint8_t rats[] = { 0xE0, 0x80 }; // FSDI=8 (FSD=256), CID=0
 212                 c.arg[0] = ISO14A_RAW | ISO14A_APPEND_CRC | ISO14A_NO_DISCONNECT;
 213                 c.arg[1] = 2;
 214                 c.arg[2] = 0;
 215                 memcpy(c.d.asBytes, rats, 2);
 216                 SendCommand(&c);
 217                 WaitForResponse(CMD_ACK,&resp);
 218
 219             memcpy(&card.ats, resp.d.asBytes, resp.arg[0]);
 220                 card.ats_len = resp.arg[0];                             // note: ats_len includes CRC Bytes
 221         }
 222
 223         // disconnect
 224         c.arg[0] = 0;
 225         c.arg[1] = 0;
 226         c.arg[2] = 0;
 227         SendCommand(&c);
 228
 229
 230         if(card.ats_len >= 3) {                 // a valid ATS consists of at least the length byte (TL) and 2 CRC bytes
 231                 bool ta1 = 0, tb1 = 0, tc1 = 0;
 232                 int pos;
 233
 234                 if (select_status == 2) {
 235                         PrintAndLog("SAK incorrectly claims that card doesn't support RATS");
 236                 }
 237                 PrintAndLog(" ATS : %s", sprint_hex(card.ats, card.ats_len));
 238                 PrintAndLog("       -  TL : length is %d bytes", card.ats[0]);
 239                 if (card.ats[0] != card.ats_len - 2) {
 240                         PrintAndLog("ATS may be corrupted. Length of ATS (%d bytes incl. 2 Bytes CRC) doesn't match TL", card.ats_len);
 241                 }
 242
 243                 if (card.ats[0] > 1) {          // there is a format byte (T0)
 244                         ta1 = (card.ats[1] & 0x10) == 0x10;
 245                         tb1 = (card.ats[1] & 0x20) == 0x20;
 246                         tc1 = (card.ats[1] & 0x40) == 0x40;
 247                         int16_t fsci = card.ats[1] & 0x0f;
 248                         PrintAndLog("       -  T0 : TA1 is%s present, TB1 is%s present, "
 249                                         "TC1 is%s present, FSCI is %d (FSC = %ld)",
 250                                 (ta1 ? "" : " NOT"), (tb1 ? "" : " NOT"), (tc1 ? "" : " NOT"),
 251                                 fsci,
 252                                 fsci < 5 ? (fsci - 2) * 8 :
 253                                         fsci < 8 ? (fsci - 3) * 32 :
 254                                         fsci == 8 ? 256 :
 255                                         -1
 256                                 );
 257                 }
 258                 pos = 2;
 259                 if (ta1) {
 260                         char dr[16], ds[16];
 261                         dr[0] = ds[0] = '\0';
 262                         if (card.ats[pos] & 0x10) strcat(ds, "2, ");
 263                         if (card.ats[pos] & 0x20) strcat(ds, "4, ");
 264                         if (card.ats[pos] & 0x40) strcat(ds, "8, ");
 265                         if (card.ats[pos] & 0x01) strcat(dr, "2, ");
 266                         if (card.ats[pos] & 0x02) strcat(dr, "4, ");
 267                         if (card.ats[pos] & 0x04) strcat(dr, "8, ");
 268                         if (strlen(ds) != 0) ds[strlen(ds) - 2] = '\0';
 269                         if (strlen(dr) != 0) dr[strlen(dr) - 2] = '\0';
 270                         PrintAndLog("       - TA1 : different divisors are%s supported, "
 271                                         "DR: [%s], DS: [%s]",
 272                                         (card.ats[pos] & 0x80 ? " NOT" : ""), dr, ds);
 273                         pos++;
 274                 }
 275                 if (tb1) {
 276                         uint32_t sfgi = card.ats[pos] & 0x0F;
 277                         uint32_t fwi = card.ats[pos] >> 4;
 278                         PrintAndLog("       - TB1 : SFGI = %d (SFGT = %s%ld/fc), FWI = %d (FWT = %ld/fc)",
 279                                         (sfgi),
 280                                         sfgi ? "" : "(not needed) ",
 281                                         sfgi ? (1 << 12) << sfgi : 0,
 282                                         fwi,
 283                                         (1 << 12) << fwi
 284                                         );
 285                         pos++;
 286                 }
 287                 if (tc1) {
 288                         PrintAndLog("       - TC1 : NAD is%s supported, CID is%s supported",
 289                                         (card.ats[pos] & 0x01) ? "" : " NOT",
 290                                         (card.ats[pos] & 0x02) ? "" : " NOT");
 291                         pos++;
 292                 }
 293                 if (card.ats[0] > pos) {
 294                         char *tip = "";
 295                         if (card.ats[0] - pos >= 7) {
 296                                 if (memcmp(card.ats + pos, "\xC1\x05\x2F\x2F\x01\xBC\xD6", 7) == 0) {
 297                                         tip = "-> MIFARE Plus X 2K or 4K";
 298                                 } else if (memcmp(card.ats + pos, "\xC1\x05\x2F\x2F\x00\x35\xC7", 7) == 0) {
 299                                         tip = "-> MIFARE Plus S 2K or 4K";
 300                                 }
 301                         }
 302                         PrintAndLog("       -  HB : %s%s", sprint_hex(card.ats + pos, card.ats[0] - pos), tip);
 303                         if (card.ats[pos] == 0xC1) {
 304                                 PrintAndLog("               c1 -> Mifare or (multiple) virtual cards of various type");
 305                                 PrintAndLog("                  %02x -> Length is %d bytes",
 306                                                 card.ats[pos + 1], card.ats[pos + 1]);
 307                                 switch (card.ats[pos + 2] & 0xf0) {
 308                                         case 0x10:
 309                                                 PrintAndLog("                     1x -> MIFARE DESFire");
 310                                                 break;
 311                                         case 0x20:
 312                                                 PrintAndLog("                     2x -> MIFARE Plus");
 313                                                 break;
 314                                 }
 315                                 switch (card.ats[pos + 2] & 0x0f) {
 316                                         case 0x00:
 317                                                 PrintAndLog("                     x0 -> <1 kByte");
 318                                                 break;
 319                                         case 0x01:
 320                                                 PrintAndLog("                     x0 -> 1 kByte");
 321                                                 break;
 322                                         case 0x02:
 323                                                 PrintAndLog("                     x0 -> 2 kByte");
 324                                                 break;
 325                                         case 0x03:
 326                                                 PrintAndLog("                     x0 -> 4 kByte");
 327                                                 break;
 328                                         case 0x04:
 329                                                 PrintAndLog("                     x0 -> 8 kByte");
 330                                                 break;
 331                                 }
 332                                 switch (card.ats[pos + 3] & 0xf0) {
 333                                         case 0x00:
 334                                                 PrintAndLog("                        0x -> Engineering sample");
 335                                                 break;
 336                                         case 0x20:
 337                                                 PrintAndLog("                        2x -> Released");
 338                                                 break;
 339                                 }
 340                                 switch (card.ats[pos + 3] & 0x0f) {
 341                                         case 0x00:
 342                                                 PrintAndLog("                        x0 -> Generation 1");
 343                                                 break;
 344                                         case 0x01:
 345                                                 PrintAndLog("                        x1 -> Generation 2");
 346                                                 break;
 347                                         case 0x02:
 348                                                 PrintAndLog("                        x2 -> Generation 3");
 349                                                 break;
 350                                 }
 351                                 switch (card.ats[pos + 4] & 0x0f) {
 352                                         case 0x00:
 353                                                 PrintAndLog("                           x0 -> Only VCSL supported");
 354                                                 break;
 355                                         case 0x01:
 356                                                 PrintAndLog("                           x1 -> VCS, VCSL, and SVC supported");
 357                                                 break;
 358                                         case 0x0E:
 359                                                 PrintAndLog("                           xE -> no VCS command supported");
 360                                                 break;
 361                                 }
 362                         }
 363                 }
 364         } else {
 365                 PrintAndLog("proprietary non iso14443-4 card found, RATS not supported");
 366         }
 367
 368         return select_status;
 369 }
 370
 371 // Collect ISO14443 Type A UIDs
 372 int CmdHF14ACUIDs(const char *Cmd)
 373 {
 374         // requested number of UIDs
 375         int n = atoi(Cmd);
 376         // collect at least 1 (e.g. if no parameter was given)
 377         n = n > 0 ? n : 1;
 378
 379         PrintAndLog("Collecting %d UIDs", n);
 380         PrintAndLog("Start: %u", time(NULL));
 381         // repeat n times
 382         for (int i = 0; i < n; i++) {
 383                 // execute anticollision procedure
 384                 UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT, 0, 0}};
 385                 SendCommand(&c);
 386
 387                 UsbCommand resp;
 388                 WaitForResponse(CMD_ACK,&resp);
 389
 390                 iso14a_card_select_t *card = (iso14a_card_select_t *) resp.d.asBytes;
 391
 392                 // check if command failed
 393                 if (resp.arg[0] == 0) {
 394                         PrintAndLog("Card select failed.");
 395                 } else {
 396                         char uid_string[20];
 397                         for (uint16_t i = 0; i < card->uidlen; i++) {
 398                                 sprintf(&uid_string[2*i], "%02X", card->uid[i]);
 399                         }
 400                         PrintAndLog("%s", uid_string);
 401                 }
 402         }
 403         PrintAndLog("End: %u", time(NULL));
 404
 405         return 1;
 406 }
 407
 408 // ## simulate iso14443a tag
 409 // ## greg - added ability to specify tag UID
 410 int CmdHF14ASim(const char *Cmd)
 411 {
 412         UsbCommand c = {CMD_SIMULATE_TAG_ISO_14443a,{0,0,0}};
 413
 414         // Retrieve the tag type
 415         uint8_t tagtype = param_get8ex(Cmd,0,0,10);
 416
 417         // When no argument was given, just print help message
 418         if (tagtype == 0) {
 419                 PrintAndLog("");
 420                 PrintAndLog(" Emulating ISO/IEC 14443 type A tag with 4 or 7 byte UID");
 421                 PrintAndLog("");
 422                 PrintAndLog("   syntax: hf 14a sim <type> <uid>");
 423                 PrintAndLog("    types: 1 = MIFARE Classic");
 424                 PrintAndLog("           2 = MIFARE Ultralight");
 425                 PrintAndLog("           3 = MIFARE DESFIRE");
 426                 PrintAndLog("           4 = ISO/IEC 14443-4");
 427                 PrintAndLog("");
 428                 return 1;
 429         }
 430
 431         // Store the tag type
 432         c.arg[0] = tagtype;
 433
 434         // Retrieve the full 4 or 7 byte long uid
 435         uint64_t long_uid = param_get64ex(Cmd,1,0,16);
 436
 437         // Are we handling the (optional) second part uid?
 438         if (long_uid > 0xffffffff) {
 439                 PrintAndLog("Emulating ISO/IEC 14443 type A tag with 7 byte UID (%014"llx")",long_uid);
 440                 // Store the second part
 441                 c.arg[2] = (long_uid & 0xffffffff);
 442                 long_uid >>= 32;
 443                 // Store the first part, ignore the first byte, it is replaced by cascade byte (0x88)
 444                 c.arg[1] = (long_uid & 0xffffff);
 445         } else {
 446                 PrintAndLog("Emulating ISO/IEC 14443 type A tag with 4 byte UID (%08x)",long_uid);
 447                 // Only store the first part
 448                 c.arg[1] = long_uid & 0xffffffff;
 449         }
 450 /*
 451                 // At lease save the mandatory first part of the UID
 452                 c.arg[0] = long_uid & 0xffffffff;
 453
 454
 455         // At lease save the mandatory first part of the UID
 456         c.arg[0] = long_uid & 0xffffffff;
 457
 458         if (c.arg[1] == 0) {
 459                 PrintAndLog("Emulating ISO/IEC 14443 type A tag with UID %01d %08x %08x",c.arg[0],c.arg[1],c.arg[2]);
 460         }
 461
 462         switch (c.arg[0]) {
 463                 case 1: {
 464                         PrintAndLog("Emulating ISO/IEC 14443-3 type A tag with 4 byte UID");
 465                         UsbCommand c = {CMD_SIMULATE_TAG_ISO_14443a,param_get32ex(Cmd,0,0,10),param_get32ex(Cmd,1,0,16),param_get32ex(Cmd,2,0,16)};
 466                 } break;
 467                 case 2: {
 468                         PrintAndLog("Emulating ISO/IEC 14443-4 type A tag with 7 byte UID");
 469                 } break;
 470                 default: {
 471                         PrintAndLog("Error: unkown tag type (%d)",c.arg[0]);
 472                         PrintAndLog("syntax: hf 14a sim <uid>",c.arg[0]);
 473                         PrintAndLog(" type1: 4 ",c.arg[0]);
 474
 475                         return 1;
 476                 } break;
 477         }
 478 */
 479 /*
 480   unsigned int hi = 0, lo = 0;
 481   int n = 0, i = 0;
 482   while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
 483     hi= (hi << 4) | (lo >> 28);
 484     lo= (lo << 4) | (n & 0xf);
 485   }
 486 */
 487 //      UsbCommand c = {CMD_SIMULATE_TAG_ISO_14443a,param_get32ex(Cmd,0,0,10),param_get32ex(Cmd,1,0,16),param_get32ex(Cmd,2,0,16)};
 488 //  PrintAndLog("Emulating ISO/IEC 14443 type A tag with UID %01d %08x %08x",c.arg[0],c.arg[1],c.arg[2]);
 489   SendCommand(&c);
 490   return 0;
 491 }
 492
 493 int CmdHF14ASnoop(const char *Cmd) {
 494         int param = 0;
 495
 496         if (param_getchar(Cmd, 0) == 'h') {
 497                 PrintAndLog("It get data from the field and saves it into command buffer.");
 498                 PrintAndLog("Buffer accessible from command hf 14a list.");
 499                 PrintAndLog("Usage:  hf 14a snoop [c][r]");
 500                 PrintAndLog("c - triggered by first data from card");
 501                 PrintAndLog("r - triggered by first 7-bit request from reader (REQ,WUP,...)");
 502                 PrintAndLog("sample: hf 14a snoop c r");
 503                 return 0;
 504         }
 505
 506         for (int i = 0; i < 2; i++) {
 507                 char ctmp = param_getchar(Cmd, i);
 508                 if (ctmp == 'c' || ctmp == 'C') param |= 0x01;
 509                 if (ctmp == 'r' || ctmp == 'R') param |= 0x02;
 510         }
 511
 512   UsbCommand c = {CMD_SNOOP_ISO_14443a, {param, 0, 0}};
 513   SendCommand(&c);
 514   return 0;
 515 }
 516
 517 int CmdHF14ACmdRaw(const char *cmd) {
 518     UsbCommand c = {CMD_READER_ISO_14443a, {0, 0, 0}};
 519     uint8_t reply=1;
 520     uint8_t crc=0;
 521     uint8_t power=0;
 522     uint8_t active=0;
 523     uint8_t active_select=0;
 524     uint16_t numbits=0;
 525     char buf[5]="";
 526     int i=0;
 527     uint8_t data[100];
 528     unsigned int datalen=0, temp;
 529
 530     if (strlen(cmd)<2) {
 531         PrintAndLog("Usage: hf 14a raw [-r] [-c] [-p] [-f] [-b] <number of bits> <0A 0B 0C ... hex>");
 532         PrintAndLog("       -r    do not read response");
 533         PrintAndLog("       -c    calculate and append CRC");
 534         PrintAndLog("       -p    leave the signal field ON after receive");
 535         PrintAndLog("       -a    active signal field ON without select");
 536         PrintAndLog("       -s    active signal field ON with select");
 537         PrintAndLog("       -b    number of bits to send. Useful for send partial byte");
 538         return 0;
 539     }
 540
 541     // strip
 542     while (*cmd==' ' || *cmd=='\t') cmd++;
 543
 544     while (cmd[i]!='\0') {
 545         if (cmd[i]==' ' || cmd[i]=='\t') { i++; continue; }
 546         if (cmd[i]=='-') {
 547             switch (cmd[i+1]) {
 548                 case 'r':
 549                     reply=0;
 550                     break;
 551                 case 'c':
 552                     crc=1;
 553                     break;
 554                 case 'p':
 555                     power=1;
 556                     break;
 557                 case 'a':
 558                     active=1;
 559                     break;
 560                 case 's':
 561                     active_select=1;
 562                     break;
 563                 case 'b':
 564                     sscanf(cmd+i+2,"%d",&temp);
 565                     numbits = temp & 0xFFFF;
 566                     i+=3;
 567                     while(cmd[i]!=' ' && cmd[i]!='\0') { i++; }
 568                     i-=2;
 569                     break;
 570                 default:
 571                     PrintAndLog("Invalid option");
 572                     return 0;
 573             }
 574             i+=2;
 575             continue;
 576         }
 577         if ((cmd[i]>='0' && cmd[i]<='9') ||
 578             (cmd[i]>='a' && cmd[i]<='f') ||
 579             (cmd[i]>='A' && cmd[i]<='F') ) {
 580             buf[strlen(buf)+1]=0;
 581             buf[strlen(buf)]=cmd[i];
 582             i++;
 583
 584             if (strlen(buf)>=2) {
 585                 sscanf(buf,"%x",&temp);
 586                 data[datalen]=(uint8_t)(temp & 0xff);
 587                 datalen++;
 588                 *buf=0;
 589             }
 590             continue;
 591         }
 592         PrintAndLog("Invalid char on input");
 593         return 0;
 594     }
 595     if(crc && datalen>0)
 596     {
 597         uint8_t first, second;
 598         ComputeCrc14443(CRC_14443_A, data, datalen, &first, &second);
 599         data[datalen++] = first;
 600         data[datalen++] = second;
 601     }
 602
 603     if(active || active_select)
 604     {
 605         c.arg[0] |= ISO14A_CONNECT;
 606         if(active)
 607             c.arg[0] |= ISO14A_NO_SELECT;
 608     }
 609     if(power)
 610         c.arg[0] |= ISO14A_NO_DISCONNECT;
 611     if(datalen>0)
 612         c.arg[0] |= ISO14A_RAW;
 613
 614     c.arg[1] = datalen;
 615     c.arg[2] = numbits;
 616     memcpy(c.d.asBytes,data,datalen);
 617
 618     SendCommand(&c);
 619
 620     if (reply) {
 621         if(active_select)
 622             waitCmd(1);
 623         if(datalen>0)
 624             waitCmd(0);
 625     } // if reply
 626     return 0;
 627 }
 628
 629 static void waitCmd(uint8_t iSelect)
 630 {
 631     uint8_t *recv;
 632     UsbCommand resp;
 633     char *hexout;
 634
 635     if (WaitForResponseTimeout(CMD_ACK,&resp,1000)) {
 636         recv = resp.d.asBytes;
 637         uint8_t iLen = iSelect ? resp.arg[1] : resp.arg[0];
 638         PrintAndLog("received %i octets",iLen);
 639         if(!iLen)
 640             return;
 641         hexout = (char *)malloc(iLen * 3 + 1);
 642         if (hexout != NULL) {
 643             for (int i = 0; i < iLen; i++) { // data in hex
 644                 sprintf(&hexout[i * 3], "%02X ", recv[i]);
 645             }
 646             PrintAndLog("%s", hexout);
 647             free(hexout);
 648         } else {
 649             PrintAndLog("malloc failed your client has low memory?");
 650         }
 651     } else {
 652         PrintAndLog("timeout while waiting for reply.");
 653     }
 654 }
 655
 656 static command_t CommandTable[] =
 657 {
 658   {"help",   CmdHelp,              1, "This help"},
 659   {"list",   CmdHF14AList,         0, "List ISO 14443a history"},
 660   {"reader", CmdHF14AReader,       0, "Act like an ISO14443 Type A reader"},
 661   {"cuids",  CmdHF14ACUIDs,        0, "<n> Collect n>0 ISO14443 Type A UIDs in one go"},
 662   {"sim",    CmdHF14ASim,          0, "<UID> -- Fake ISO 14443a tag"},
 663   {"snoop",  CmdHF14ASnoop,        0, "Eavesdrop ISO 14443 Type A"},
 664   {"raw",    CmdHF14ACmdRaw,       0, "Send raw hex data to tag"},
 665   {NULL, NULL, 0, NULL}
 666 };
 667
 668 int CmdHF14A(const char *Cmd) {
 669         // flush
 670         WaitForResponseTimeout(CMD_ACK,NULL,100);
 671
 672         // parse
 673   CmdsParse(CommandTable, Cmd);
 674   return 0;
 675 }
 676
 677 int CmdHelp(const char *Cmd)
 678 {
 679   CmdsHelp(CommandTable);
 680   return 0;
 681 }