git.rot13.org Git - librfid/blob - utils/librfid-tool.c

   1 /* librfid-tool - a small command-line tool for librfid testing
   2  *
   3  * (C) 2005-2008 by Harald Welte <laforge@gnumonks.org>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License version 2
   7  *  as published by the Free Software Foundation
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, write to the Free Software
  16  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <stdio.h>
  20 #include <unistd.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <errno.h>
  24
  25 #ifndef __MINGW32__
  26 #include <libgen.h>
  27 #endif
  28
  29 #define _GNU_SOURCE
  30 #include <getopt.h>
  31
  32 #include <librfid/rfid.h>
  33 #include <librfid/rfid_scan.h>
  34 #include <librfid/rfid_reader.h>
  35 #include <librfid/rfid_layer2.h>
  36 #include <librfid/rfid_protocol.h>
  37
  38 #include <librfid/rfid_layer2_iso14443a.h>
  39 #include <librfid/rfid_layer2_iso15693.h>
  40
  41 #include <librfid/rfid_protocol_mifare_classic.h>
  42 #include <librfid/rfid_protocol_mifare_ul.h>
  43 #include <librfid/rfid_protocol_tagit.h>
  44 #include <librfid/rfid_protocol_icode.h>
  45
  46 #include "librfid-tool.h"
  47
  48
  49 static int select_mf(void)
  50 {
  51         unsigned char cmd[] = { 0x00, 0xa4, 0x00, 0x00, 0x02, 0x3f, 0x00, 0x00 };
  52         unsigned char ret[256];
  53         unsigned int rlen = sizeof(ret);
  54
  55         int rv;
  56
  57         rv = rfid_protocol_transceive(ph, cmd, sizeof(cmd), ret, &rlen, 0, 0);
  58         if (rv < 0)
  59                 return rv;
  60
  61         printf("%d: [%s]\n", rlen, hexdump(ret, rlen));
  62
  63         return 0;
  64 }
  65
  66
  67 static int iso7816_get_challenge(unsigned char len)
  68 {
  69         unsigned char cmd[] = { 0x00, 0x84, 0x00, 0x00, 0x08 };
  70         unsigned char ret[256];
  71         unsigned int rlen = sizeof(ret);
  72
  73         cmd[4] = len;
  74
  75         int rv;
  76
  77         rv = rfid_protocol_transceive(ph, cmd, sizeof(cmd), ret, &rlen, 0, 0);
  78         if (rv < 0)
  79                 return rv;
  80
  81         printf("%d: [%s]\n", rlen, hexdump(ret, rlen));
  82
  83         return 0;
  84 }
  85
  86 int
  87 iso7816_select_application(void)
  88 {
  89         unsigned char cmd[] = { 0x00, 0xa4, 0x04, 0x0c, 0x07,
  90                        0xa0, 0x00, 0x00, 0x02, 0x47, 0x10, 0x01 };
  91         unsigned char resp[7];
  92         unsigned int rlen = sizeof(resp);
  93
  94         int rv;
  95
  96         rv = rfid_protocol_transceive(ph, cmd, sizeof(cmd), resp, &rlen, 0, 0);
  97         if (rv < 0)
  98                 return rv;
  99
 100         /* FIXME: parse response */
 101         printf("%s\n", hexdump(resp, rlen));
 102
 103         return 0;
 104 }
 105
 106 int
 107 iso7816_select_ef(u_int16_t fid)
 108 {
 109         unsigned char cmd[7] = { 0x00, 0xa4, 0x02, 0x0c, 0x02, 0x00, 0x00 };
 110         unsigned char resp[7];
 111         unsigned int rlen = sizeof(resp);
 112
 113         int rv;
 114
 115         cmd[5] = (fid >> 8) & 0xff;
 116         cmd[6] = fid & 0xff;
 117
 118         rv = rfid_protocol_transceive(ph, cmd, sizeof(cmd), resp, &rlen, 0, 0);
 119         if (rv < 0)
 120                 return rv;
 121
 122         /* FIXME: parse response */
 123         printf("%s\n", hexdump(resp, rlen));
 124
 125         return 0;
 126 }
 127
 128 int
 129 iso7816_read_binary(unsigned char *buf, unsigned int *len)
 130 {
 131         unsigned char cmd[] = { 0x00, 0xb0, 0x00, 0x00, 0x00 };
 132         unsigned char resp[256];
 133         unsigned int rlen = sizeof(resp);
 134
 135         int rv;
 136
 137         rv = rfid_protocol_transceive(ph, cmd, sizeof(cmd), resp, &rlen, 0, 0);
 138         if (rv < 0)
 139                 return rv;
 140
 141         printf("%s\n", hexdump(resp, rlen));
 142
 143         /* FIXME: parse response, determine whether we need additional reads */
 144
 145         /* FIXME: copy 'len' number of response bytes to 'buf' */
 146         return 0;
 147 }
 148
 149 /* wrapper function around SELECT EF and READ BINARY */
 150 int
 151 iso7816_read_ef(u_int16_t fid, unsigned char *buf, unsigned int *len)
 152 {
 153         int rv;
 154
 155         rv = iso7816_select_ef(fid);
 156         if (rv < 0)
 157                 return rv;
 158
 159         return iso7816_read_binary(buf, len);
 160 }
 161
 162 /* mifare ultralight helpers */
 163 int
 164 mifare_ulight_write(struct rfid_protocol_handle *ph)
 165 {
 166         unsigned char buf[4] = { 0xa1, 0xa2, 0xa3, 0xa4 };
 167
 168         return rfid_protocol_write(ph, 10, buf, 4);
 169 }
 170
 171 int
 172 mifare_ulight_blank(struct rfid_protocol_handle *ph)
 173 {
 174         unsigned char buf[4] = { 0x00, 0x00, 0x00, 0x00 };
 175         int i, ret;
 176
 177         for (i = 4; i <= MIFARE_UL_PAGE_MAX; i++) {
 178                 ret = rfid_protocol_write(ph, i, buf, 4);
 179                 if (ret < 0)
 180                         return ret;
 181         }
 182         return 0;
 183 }
 184
 185 static int
 186 mifare_ulight_read(struct rfid_protocol_handle *ph)
 187 {
 188         unsigned char buf[20];
 189         unsigned int len = sizeof(buf);
 190         int ret;
 191         int i;
 192
 193         for (i = 0; i <= MIFARE_UL_PAGE_MAX; i++) {
 194                 ret = rfid_protocol_read(ph, i, buf, &len);
 195                 if (ret < 0)
 196                         return ret;
 197
 198                 printf("Page 0x%x: %s\n", i, hexdump(buf, 4));
 199         }
 200         return 0;
 201 }
 202
 203 /* mifare classic helpers */
 204 static int
 205 mifare_classic_read_sector(struct rfid_protocol_handle *ph, int sector)
 206 {
 207         unsigned char buf[20];
 208         unsigned int len = sizeof(buf);
 209         int ret;
 210         int block, blocks_per_sector, first_block;
 211
 212         printf("Reading sector %u\n", sector);
 213
 214         first_block = mfcl_sector2block(sector);
 215         blocks_per_sector = mfcl_sector_blocks(sector);
 216
 217         if (first_block < 0 || blocks_per_sector < 0)
 218                 return -EINVAL;
 219
 220         for (block = first_block; block < first_block + blocks_per_sector;
 221              block++) {
 222                 printf("Reading block %u: ", block);
 223                 ret = rfid_protocol_read(ph, block, buf, &len);
 224                 if (ret == -ETIMEDOUT)
 225                         fprintf(stderr, "TIMEOUT\n");
 226                 if (ret < 0) {
 227                         printf("Error %d reading\n", ret);
 228                         return ret;
 229                 }
 230
 231                 printf("Page 0x%x: %s\n", block, hexdump(buf, len));
 232         }
 233         return 0;
 234 }
 235
 236 static int
 237 mifare_classic_dump(struct rfid_protocol_handle *ph)
 238 {
 239         unsigned int size;
 240         unsigned int size_len = sizeof(size);
 241         int sector, num_sectors;
 242
 243         if (rfid_protocol_getopt(ph, RFID_OPT_PROTO_SIZE,
 244                                  &size, &size_len) == 0) {
 245                 printf("Size: %u bytes\n", size);
 246         } else {
 247                 printf("Size: unknown ?!?\n");
 248                 return -EINVAL;
 249         }
 250
 251         switch (size) {
 252         case 320:
 253                 num_sectors = 5;
 254                 break;
 255         case 1024:
 256                 num_sectors = 16;
 257                 break;
 258         case 4096:
 259                 num_sectors = 40;
 260                 break;
 261         default:
 262                 return -EINVAL;
 263         }
 264
 265         for (sector = 0; sector < num_sectors; sector++) {
 266                 int rc;
 267
 268                 printf("Authenticating sector %u: ", sector);
 269                 fflush(stdout);
 270
 271                 rc = mfcl_set_key(ph, MIFARE_CL_KEYA_DEFAULT_INFINEON);
 272                 if (rc < 0) {
 273                         printf("key format error\n");
 274                         exit(1);
 275                 }
 276
 277                 rc = mfcl_auth(ph, RFID_CMD_MIFARE_AUTH1A,
 278                                mfcl_sector2block(sector));
 279                 if (rc < 0) {
 280                         printf("mifare auth error\n");
 281                         exit(1);
 282                 } else
 283                         printf("mifare auth succeeded!\n");
 284
 285                 mifare_classic_read_sector(ph, sector);
 286         }
 287 }
 288
 289 static char *proto_names[] = {
 290         [RFID_PROTOCOL_TCL] = "tcl",
 291         [RFID_PROTOCOL_MIFARE_UL] = "mifare-ultralight",
 292         [RFID_PROTOCOL_MIFARE_CLASSIC] = "mifare-classic",
 293         [RFID_PROTOCOL_ICODE_SLI] = "icode",
 294         [RFID_PROTOCOL_TAGIT] = "tagit",
 295 };
 296
 297 static int proto_by_name(const char *name)
 298 {
 299         int i;
 300
 301         for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
 302                 if (proto_names[i] == NULL)
 303                         continue;
 304                 if (!strcasecmp(name, proto_names[i]))
 305                         return i;
 306         }
 307         return -1;
 308 }
 309
 310 static char *l2_names[] = {
 311         [RFID_LAYER2_ISO14443A] = "iso14443a",
 312         [RFID_LAYER2_ISO14443B] = "iso14443b",
 313         [RFID_LAYER2_ISO15693] = "iso15693",
 314         [RFID_LAYER2_ICODE1] = "icode1",
 315 };
 316
 317 static int l2_by_name(const char *name)
 318 {
 319         int i;
 320
 321         for (i = 0; i < ARRAY_SIZE(l2_names); i++) {
 322                 if (l2_names[i] == NULL)
 323                         continue;
 324                 if (!strcasecmp(name, l2_names[i]))
 325                         return i;
 326         }
 327         return -1;
 328 }
 329
 330 static int do_scan(int first)
 331 {
 332         int rc;
 333         unsigned int size;
 334         unsigned int size_len = sizeof(size);
 335
 336         if (first) {
 337                 rh->reader->rf_power(rh, 0);
 338                 usleep(10*1000);
 339                 rh->reader->rf_power(rh, 1);
 340         }
 341         printf("scanning for RFID token...\n");
 342         rc = rfid_scan(rh, &l2h, &ph);
 343         if (rc >= 2) {
 344                 unsigned char uid_buf[16];
 345                 unsigned int uid_len = sizeof(uid_buf);
 346                 rfid_layer2_getopt(l2h, RFID_OPT_LAYER2_UID, &uid_buf,
 347                                    &uid_len);
 348                 printf("Layer 2 success (%s): %s\n", rfid_layer2_name(l2h),
 349                         hexdump(uid_buf, uid_len));
 350         }
 351         if (rc >= 3) {
 352                 printf("Protocol success (%s)\n", rfid_protocol_name(ph));
 353
 354                 if (rfid_protocol_getopt(ph, RFID_OPT_PROTO_SIZE,
 355                                          &size, &size_len) == 0)
 356                         printf("Size: %u bytes\n", size);
 357         }
 358
 359         return rc;
 360 }
 361
 362 static void do_endless_scan()
 363 {
 364         int rc;
 365         int first = 1;
 366
 367         while (1) {
 368                 if (first)
 369                         putc('\n', stdout);
 370                 printf("==> doing %s scan\n", first ? "first" : "successive");
 371                 rc = do_scan(first);
 372                 if (rc >= 3) {
 373                         printf("closing proto\n");
 374                         rfid_protocol_close(ph);
 375                 }
 376                 if (rc >= 2) {
 377                         printf("closing layer2\n");
 378                         rfid_layer2_close(l2h);
 379                         first = 0;
 380                 } else
 381                         first = 1;
 382         }
 383 }
 384
 385 static void do_regdump(void)
 386 {
 387         u_int8_t buffer[0xff];
 388         int i;
 389
 390         printf("dumping rc632 regs...\n");
 391
 392         rc632_register_dump(rh->ah, buffer);
 393
 394         printf("\n     ");
 395         for (i=0; i<=0x0f; i++)
 396                 printf(" 0x_%01X",i);
 397         printf("\n-----------------------------------------------------------------------------------\n");
 398
 399         for (i=0; i <= 0x3f; i++) {
 400                 if ((i % 0x10) == 0)
 401                         printf("0x%01X_:",i/0x10);
 402                 printf(" 0x%02X", buffer[i]);
 403                 if ((i% 0x10) == 0x0f)
 404                         printf("\n");
 405         }
 406
 407         /* print regdump as c-style array*/
 408         printf("u_int8_t rc632_regs[] = {");
 409         for (i = 0; i <= 0x3f; i++) {
 410                 if (((i+1) % 0x08) == 1) {
 411                         if (i > 7)
 412                                 printf("//%2d..%2d",i-8,i-1);
 413                         printf("\n\t");
 414                 }
 415                 printf(" 0x%02X, ",buffer[i]);
 416         }
 417         printf("//%2d..%2d\n\t 0 };\n",i-8,i-1);
 418
 419 }
 420
 421 static void do_enum(int layer2)
 422 {
 423         int rc;
 424         //unsigned int size;
 425         //unsigned int size_len = sizeof(size);
 426         unsigned char uid_buf[16];
 427         unsigned int uid_len;
 428
 429         printf("scanning for RFID token on layer %s...\n", l2_names[layer2]);
 430
 431         if (rh->reader->l2_supported & (1 << layer2)) {
 432                 l2h = rfid_layer2_init(rh, layer2);
 433                 rc = rfid_layer2_open(l2h);
 434         } else {
 435                 printf("error during layer2_open\n");
 436                 return ;
 437         }
 438
 439         while (rc>=0) {
 440                 if (l2h) {
 441                         uid_len = sizeof(uid_buf);
 442                         rfid_layer2_getopt(l2h, RFID_OPT_LAYER2_UID, &uid_buf, &uid_len);
 443                         printf("Layer 2 success (%s)[%d]: %s\n", rfid_layer2_name(l2h), uid_len, hexdump(uid_buf, uid_len));
 444                 }
 445
 446         /*
 447                 ph = rfid_protocol_scan(l2h);
 448                 if (ph) {
 449                         printf("Protocol success (%s)\n", rfid_protocol_name(ph));
 450
 451                         if (rfid_protocol_getopt(ph, RFID_OPT_PROTO_SIZE,
 452                                              &size, &size_len) == 0)
 453                         printf("Size: %u bytes\n", size);
 454                 } else
 455                         printf("##############\n");
 456                 */
 457
 458                 if (rc >= 0) {
 459                         rfid_layer2_close(l2h);
 460                 }
 461                 rc = rfid_layer2_open(l2h);
 462         }
 463 }
 464
 465 #define OPTION_OFFSET 256
 466
 467 static struct option original_opts[] = {
 468         { "help", 0, 0, 'h' },
 469         { "layer2", 1, 0, 'l' },
 470         { "protocol", 1, 0, 'p' },
 471         { "scan", 0, 0, 's' },
 472         { "scan-loop", 0, 0, 'S' },
 473         { "dump", 0, 0, 'd' },
 474         { "enum", 0, 0, 'e' },
 475         {0, 0, 0, 0}
 476 };
 477
 478 /* module / option merging code */
 479 static struct option *opts = original_opts;
 480 static unsigned int global_option_offset = 0;
 481
 482 static char *program_name;
 483 static char *program_version = LIBRFID_TOOL_VERSION;
 484
 485 static void free_opts(int reset_offset)
 486 {
 487         if (opts != original_opts) {
 488                 free(opts);
 489                 opts = original_opts;
 490                 if (reset_offset)
 491                         global_option_offset = 0;
 492         }
 493 }
 494
 495 static struct option *
 496 merge_options(struct option *oldopts, const struct option *newopts,
 497               unsigned int *option_offset)
 498 {
 499         unsigned int num_old, num_new, i;
 500         struct option *merge;
 501
 502         for (num_old = 0; oldopts[num_old].name; num_old++);
 503         for (num_new = 0; oldopts[num_new].name; num_new++);
 504
 505         global_option_offset += OPTION_OFFSET;
 506         *option_offset = global_option_offset;
 507
 508         merge = malloc(sizeof(struct option) * (num_new + num_old + 1));
 509         memcpy(merge, oldopts, num_old * sizeof(struct option));
 510         free_opts(0); /* Release previous options merged if any */
 511         for (i = 0; i < num_new; i++) {
 512                 merge[num_old + i] = newopts[i];
 513                 merge[num_old + i].val += *option_offset;
 514         }
 515         memset(merge + num_old + num_new, 0, sizeof(struct option));
 516
 517         return merge;
 518 }
 519
 520 struct rfidtool_module *find_module(const char *name)
 521 {
 522         return NULL;
 523 }
 524
 525 void register_module(struct rfidtool_module *me)
 526 {
 527         struct rfidtool_module *old;
 528
 529         if (strcmp(me->version, program_version) != 0) {
 530                 fprintf(stderr, "%s: target `%s' v%s (I'm v%s).\n",
 531                         program_name, me->name, me->version, program_version);
 532                 exit(1);
 533         }
 534
 535         old = find_module(me->name);
 536         if (old) {
 537                 fprintf(stderr, "%s: target `%s' already registered.\n",
 538                         program_name, me->name);
 539                 exit(1);
 540         }
 541 }
 542
 543 static void help(void)
 544 {
 545         printf( " -s    --scan          scan until first RFID tag is found\n"
 546                 " -S    --scan-loop     endless scanning loop\n"
 547                 " -p    --protocol      {tcl,mifare-ultralight,mifare-classic,tagit}\n"
 548                 " -l    --layer2        {iso14443a,iso14443b,iso15693}\n"
 549                 " -d    --dump          dump rc632 registers\n"
 550                 " -e    --enum          enumerate all tag's in field (iso14443a)\n"
 551                 " -h    --help\n");
 552 }
 553
 554 int main(int argc, char **argv)
 555 {
 556         int rc;
 557         char buf[0x100];
 558         int i, len, protocol = -1, layer2 = -1;
 559
 560 #ifdef  __MINGW32__
 561         program_name = argv[0];
 562 #else /*__MINGW32__*/
 563         program_name = basename(argv[0]);
 564 #endif/*__MINGW32__*/
 565
 566         printf("%s - (C) 2005-2008 by Harald Welte\n"
 567                "This program is Free Software and has "
 568                "ABSOLUTELY NO WARRANTY\n\n", program_name);
 569
 570         printf("initializing librfid\n");
 571         rfid_init();
 572
 573         while (1) {
 574                 int c, option_index = 0;
 575                 c = getopt_long(argc, argv, "hp:l:sSde", opts, &option_index);
 576                 if (c == -1)
 577                         break;
 578
 579                 switch (c) {
 580                 case 'e':
 581                         if (reader_init() < 0)
 582                                 exit(1);
 583                         layer2 = RFID_LAYER2_ISO14443A;
 584                         do_enum(layer2);
 585                         exit(0);
 586                         break;
 587                 case 'd':
 588                         if (reader_init() < 0)
 589                                 exit(1);
 590                         do_regdump();
 591                         break;
 592                 case 's':
 593                         if (reader_init() < 0)
 594                                 exit(1);
 595                         do_scan(0);
 596                         exit(0);
 597                         break;
 598                 case 'S':
 599                         if (reader_init() < 0)
 600                                 exit(1);
 601                         do_endless_scan();
 602                         exit(0);
 603                         break;
 604                 case 'p':
 605                         protocol = proto_by_name(optarg);
 606                         if (protocol < 0) {
 607                                 fprintf(stderr, "unknown protocol `%s'\n",
 608                                         optarg);
 609                                 exit(2);
 610                         }
 611                         break;
 612                 case 'l':
 613                         layer2 = l2_by_name(optarg);
 614                         if (layer2 < 0) {
 615                                 fprintf(stderr, "unknown layer2 `%s'\n",
 616                                         optarg);
 617                                 exit(2);
 618                         }
 619                         break;
 620                 case 'h':
 621                         help();
 622                         exit(0);
 623                         break;
 624                 }
 625         }
 626
 627         switch (protocol) {
 628         case RFID_PROTOCOL_MIFARE_UL:
 629         case RFID_PROTOCOL_MIFARE_CLASSIC:
 630                 layer2 = RFID_LAYER2_ISO14443A;
 631                 break;
 632         case -1:
 633                 fprintf(stderr, "you have to specify --protocol\n");
 634                 exit(2);
 635         }
 636
 637         if (layer2 < 0) {
 638                 fprintf(stderr, "you have to specify --layer2\n");
 639                 exit(2);
 640         }
 641
 642         if (reader_init() < 0)
 643                 exit(1);
 644
 645
 646         if (l2_init(layer2) < 0) {
 647                 rfid_reader_close(rh);
 648                 exit(1);
 649         }
 650
 651         if (l3_init(protocol) < 0) {
 652                 rfid_reader_close(rh);
 653                 exit(1);
 654         }
 655
 656         switch (protocol) {
 657
 658         case RFID_PROTOCOL_TCL:
 659                 printf("Protocol T=CL\n");
 660                 /* we've established T=CL at this point */
 661                 printf("selecting Master File\n");
 662                 rc = select_mf();
 663                 if (rc < 0) {
 664                         printf("error selecting MF\n");
 665                         break;
 666                 }
 667
 668                 printf("Getting random challenge, length 255\n");
 669                 rc = iso7816_get_challenge(0xff);
 670                 if (rc < 0) {
 671                         printf("error getting random challenge\n");
 672                         break;
 673                 }
 674
 675                 printf("selecting Passport application\n");
 676                 rc = iso7816_select_application();
 677                 if (rc < 0) {
 678                         printf("error selecting passport application\n");
 679                         break;
 680                 }
 681
 682                 printf("selecting EF 0x1e\n");
 683                 rc = iso7816_select_ef(0x011e);
 684                 if (rc < 0) {
 685                         printf("error selecting EF 0x1e\n");
 686                         break;
 687                 }
 688
 689                 printf("selecting EF 0x01\n");
 690                 rc = iso7816_select_ef(0x0101);
 691                 if (rc < 0) {
 692                         printf("error selecting EF 0x01\n");
 693                         break;
 694                 }
 695
 696                 while (1) {
 697                         printf("reading EF1\n");
 698                         len = sizeof(buf);
 699                         printf("reading ef\n");
 700                         rc = iso7816_read_binary(buf, &len);
 701                         if (rc < 0) {
 702                                 printf("error reading EF\n");
 703                                 break;
 704                         }
 705                 }
 706 #if 0
 707                 for (i = 0; i < 4; i++)
 708                         iso7816_get_challenge(0xff);
 709 #endif
 710                 break;
 711         case RFID_PROTOCOL_MIFARE_UL:
 712                 printf("Protocol Mifare Ultralight\n");
 713                 mifare_ulight_read(ph);
 714 #if 0
 715                 mifare_ulight_blank(ph);
 716                 mifare_ulight_write(ph);
 717                 mifare_ulight_read(ph);
 718 #endif
 719                 break;
 720         case RFID_PROTOCOL_MIFARE_CLASSIC:
 721                 printf("Protocol Mifare Classic\n");
 722                 mifare_classic_dump(ph);
 723                 break;
 724         default:
 725                 printf("unknown protocol %u\n", protocol);
 726                 exit(1);
 727                 break;
 728         }
 729
 730         rfid_reader_close(rh);
 731
 732         exit(0);
 733 }