librfid/utils/librfid-tool.c

918 lines
20 KiB
C

/* librfid-tool - a small command-line tool for librfid testing
*
* (C) 2005-2008 by Harald Welte <laforge@gnumonks.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#ifndef __MINGW32__
#include <libgen.h>
#endif
#define _GNU_SOURCE
#include <getopt.h>
#include <librfid/rfid.h>
#include <librfid/rfid_scan.h>
#include <librfid/rfid_reader.h>
#include <librfid/rfid_layer2.h>
#include <librfid/rfid_protocol.h>
#include <librfid/rfid_layer2_iso14443a.h>
#include <librfid/rfid_layer2_iso15693.h>
#include <librfid/rfid_protocol_mifare_classic.h>
#include <librfid/rfid_protocol_mifare_ul.h>
#include <librfid/rfid_protocol_tagit.h>
#include <librfid/rfid_protocol_icode.h>
#include <librfid/rfid_protocol_tcl.h>
#include "librfid-tool.h"
static int select_mf(void)
{
unsigned char cmd[] = { 0x00, 0xa4, 0x00, 0x00, 0x02, 0x3f, 0x00, 0x00 };
unsigned char ret[256];
unsigned int rlen = sizeof(ret);
int rv;
rv = rfid_protocol_transceive(ph, cmd, sizeof(cmd), ret, &rlen, 0, 0);
if (rv < 0)
return rv;
printf("%d: [%s]\n", rlen, hexdump(ret, rlen));
return 0;
}
static int iso7816_get_challenge(unsigned char len)
{
unsigned char cmd[] = { 0x00, 0x84, 0x00, 0x00, 0x08 };
unsigned char ret[256];
unsigned int rlen = sizeof(ret);
cmd[4] = len;
int rv;
rv = rfid_protocol_transceive(ph, cmd, sizeof(cmd), ret, &rlen, 0, 0);
if (rv < 0)
return rv;
printf("%d: [%s]\n", rlen, hexdump(ret, rlen));
return 0;
}
int
iso7816_select_application(void)
{
unsigned char cmd[] = { 0x00, 0xa4, 0x04, 0x0c, 0x07,
0xa0, 0x00, 0x00, 0x02, 0x47, 0x10, 0x01 };
unsigned char resp[7];
unsigned int rlen = sizeof(resp);
int rv;
rv = rfid_protocol_transceive(ph, cmd, sizeof(cmd), resp, &rlen, 0, 0);
if (rv < 0)
return rv;
/* FIXME: parse response */
printf("%s\n", hexdump(resp, rlen));
return 0;
}
int
iso7816_select_ef(u_int16_t fid)
{
unsigned char cmd[7] = { 0x00, 0xa4, 0x02, 0x0c, 0x02, 0x00, 0x00 };
unsigned char resp[7];
unsigned int rlen = sizeof(resp);
int rv;
cmd[5] = (fid >> 8) & 0xff;
cmd[6] = fid & 0xff;
rv = rfid_protocol_transceive(ph, cmd, sizeof(cmd), resp, &rlen, 0, 0);
if (rv < 0)
return rv;
/* FIXME: parse response */
printf("%s\n", hexdump(resp, rlen));
return 0;
}
int
iso7816_read_binary(unsigned char *buf, unsigned int *len)
{
unsigned char cmd[] = { 0x00, 0xb0, 0x00, 0x00, 0x00 };
unsigned char resp[256];
unsigned int rlen = sizeof(resp);
int rv;
rv = rfid_protocol_transceive(ph, cmd, sizeof(cmd), resp, &rlen, 0, 0);
if (rv < 0)
return rv;
printf("%s\n", hexdump(resp, rlen));
/* FIXME: parse response, determine whether we need additional reads */
/* FIXME: copy 'len' number of response bytes to 'buf' */
return 0;
}
/* wrapper function around SELECT EF and READ BINARY */
int
iso7816_read_ef(u_int16_t fid, unsigned char *buf, unsigned int *len)
{
int rv;
rv = iso7816_select_ef(fid);
if (rv < 0)
return rv;
return iso7816_read_binary(buf, len);
}
/* mifare ultralight helpers */
int
mifare_ulight_write(struct rfid_protocol_handle *ph)
{
unsigned char buf[4] = { 0xa1, 0xa2, 0xa3, 0xa4 };
return rfid_protocol_write(ph, 10, buf, 4);
}
int
mifare_ulight_blank(struct rfid_protocol_handle *ph)
{
unsigned char buf[4] = { 0x00, 0x00, 0x00, 0x00 };
int i, ret;
for (i = 4; i <= MIFARE_UL_PAGE_MAX; i++) {
ret = rfid_protocol_write(ph, i, buf, 4);
if (ret < 0)
return ret;
}
return 0;
}
static int
mifare_ulight_read(struct rfid_protocol_handle *ph)
{
unsigned char buf[20];
unsigned int len = sizeof(buf);
int ret;
int i;
for (i = 0; i <= MIFARE_UL_PAGE_MAX; i++) {
ret = rfid_protocol_read(ph, i, buf, &len);
if (ret < 0)
return ret;
printf("Page 0x%x: %s\n", i, hexdump(buf, 4));
}
return 0;
}
/* mifare classic helpers */
static int
mifare_classic_read_sector(struct rfid_protocol_handle *ph, int sector)
{
unsigned char buf[20];
unsigned int len = sizeof(buf);
int ret;
int block, blocks_per_sector, first_block;
printf("Reading sector %u\n", sector);
first_block = mfcl_sector2block(sector);
blocks_per_sector = mfcl_sector_blocks(sector);
if (first_block < 0 || blocks_per_sector < 0)
return -EINVAL;
for (block = first_block; block < first_block + blocks_per_sector;
block++) {
printf("Reading block %u: ", block);
ret = rfid_protocol_read(ph, block, buf, &len);
if (ret == -ETIMEDOUT)
fprintf(stderr, "TIMEOUT\n");
if (ret < 0) {
printf("Error %d reading\n", ret);
return ret;
}
printf("Page 0x%x: %s\n", block, hexdump(buf, len));
}
return 0;
}
static int
mifare_classic_dump(struct rfid_protocol_handle *ph)
{
unsigned int size;
unsigned int size_len = sizeof(size);
int sector, num_sectors;
if (rfid_protocol_getopt(ph, RFID_OPT_PROTO_SIZE,
&size, &size_len) == 0) {
printf("Size: %u bytes\n", size);
} else {
printf("Size: unknown ?!?\n");
return -EINVAL;
}
switch (size) {
case 320:
num_sectors = 5;
break;
case 1024:
num_sectors = 16;
break;
case 4096:
num_sectors = 40;
break;
default:
return -EINVAL;
}
for (sector = 0; sector < num_sectors; sector++) {
int rc;
printf("Authenticating sector %u: ", sector);
fflush(stdout);
rc = mfcl_set_key(ph, MIFARE_CL_KEYA_DEFAULT_INFINEON);
if (rc < 0) {
printf("key format error\n");
exit(1);
}
rc = mfcl_auth(ph, RFID_CMD_MIFARE_AUTH1A,
mfcl_sector2block(sector));
if (rc < 0) {
printf("mifare auth error\n");
exit(1);
} else
printf("mifare auth succeeded!\n");
mifare_classic_read_sector(ph, sector);
}
}
void
iso15693_write(struct rfid_reader_handle *rh,int layer2,int sector,
unsigned char *data, unsigned int len)
{
int rc;
unsigned char uid_buf[16];
unsigned int uid_len = sizeof(uid_buf);
if (rh->reader->l2_supported & (1 << layer2)) {
l2h = rfid_layer2_init(rh, layer2);
if (!l2h) {
printf("error during layer2(%d)_init (0=14a,1=14b,3=15)\n",layer2);
return;
}
printf("Layer2 init ok\n");
rc = rfid_layer2_open(l2h);
if (rc>0){
rfid_layer2_getopt(l2h, RFID_OPT_LAYER2_UID, &uid_buf, &uid_len);
printf("Layer 2 success (%s)[%d]: '%s'\n", rfid_layer2_name(l2h), uid_len, hexdump(uid_buf, uid_len));
rc = iso15693_write_block(l2h,sector,data,len);
printf("write>>rc: %d\n",rc);
}else {
printf("error during layer2_open\n");
return ;
}
rfid_layer2_close(l2h);
rfid_layer2_fini(l2h);
}
}
void iso15693_dump(struct rfid_reader_handle *rh,int layer2,int sector){
unsigned int size;
unsigned int size_len = sizeof(size);
unsigned char buf[1024];
int rc,i;
unsigned char uid_buf[16], block_sec;
unsigned int uid_len = sizeof(uid_buf);
if (rh->reader->l2_supported & (1 << layer2)) {
l2h = rfid_layer2_init(rh, layer2);
if (!l2h) {
printf("error during layer2(%d)_init (0=14a,1=14b,3=15)\n",layer2);
return;
}
printf("Layer2 init ok\n");
rc = rfid_layer2_open(l2h);
if (rc>0){
rfid_layer2_getopt(l2h, RFID_OPT_LAYER2_UID, &uid_buf, &uid_len);
printf("Layer 2 success (%s)[%d]: '%s'\n", rfid_layer2_name(l2h), uid_len, hexdump(uid_buf, uid_len));
if (sector < 0){
if (sector<=-3)
iso15693_select(l2h);
for(i=0;i<=255;i++){
rc = iso15693_read_block(l2h,i,buf,sizeof(buf),&block_sec);
if (rc>=0)
printf("block[%3d:%02x]sec:0x%0x data(%d): %s\n",i,i,block_sec,rc,rfid_hexdump(buf,rc));
else{
printf("no data(read_block(%d)>> %d)\n",i,rc);
if ((sector == -1)||(sector == -3))
break;
}
}
}else{
if (sector>255)
sector=255;
rc = iso15693_read_block(l2h,sector,buf,sizeof(buf));
if (rc>=0)
printf("block[%d]data(%d): %s\n",i,rc,rfid_hexdump(buf,rc));
else
printf("no data(read_block(%d)>> %d)\n",i,rc);
}
} else {
printf("error during layer2_open\n");
return ;
}
rfid_layer2_close(l2h);
rfid_layer2_fini(l2h);
}
}
static char *proto_names[] = {
[RFID_PROTOCOL_TCL] = "tcl",
[RFID_PROTOCOL_MIFARE_UL] = "mifare-ultralight",
[RFID_PROTOCOL_MIFARE_CLASSIC] = "mifare-classic",
[RFID_PROTOCOL_ICODE_SLI] = "icode",
[RFID_PROTOCOL_TAGIT] = "tagit",
};
static int proto_by_name(const char *name)
{
int i;
for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
if (proto_names[i] == NULL)
continue;
if (!strcasecmp(name, proto_names[i]))
return i;
}
return -1;
}
static char *l2_names[] = {
[RFID_LAYER2_ISO14443A] = "iso14443a",
[RFID_LAYER2_ISO14443B] = "iso14443b",
[RFID_LAYER2_ISO15693] = "iso15693",
[RFID_LAYER2_ICODE1] = "icode1",
};
static int l2_by_name(const char *name)
{
int i;
for (i = 0; i < ARRAY_SIZE(l2_names); i++) {
if (l2_names[i] == NULL)
continue;
if (!strcasecmp(name, l2_names[i]))
return i;
}
return -1;
}
static int do_scan(int first)
{
int rc;
unsigned int size;
unsigned int size_len = sizeof(size);
char *data;
unsigned int data_len;
if (first) {
unsigned int opt;
unsigned int optlen = sizeof(opt);
/* turn off RF */
opt = 1;
rfid_reader_setopt(rh, RFID_OPT_RDR_RF_KILL, &opt, optlen);
usleep(10*1000);
/* turn on RF */
opt = 0;
rfid_reader_setopt(rh, RFID_OPT_RDR_RF_KILL, &opt, optlen);
}
printf("scanning for RFID token...\n");
rc = rfid_scan(rh, &l2h, &ph);
if (rc >= 2) {
unsigned char uid_buf[16];
unsigned int uid_len = sizeof(uid_buf);
rfid_layer2_getopt(l2h, RFID_OPT_LAYER2_UID, &uid_buf,
&uid_len);
printf("Layer 2 success (%s): %s\n", rfid_layer2_name(l2h),
hexdump(uid_buf, uid_len));
}
if (rc >= 3) {
printf("Protocol success (%s)\n", rfid_protocol_name(ph));
if (rfid_protocol_getopt(ph, RFID_OPT_PROTO_SIZE,
&size, &size_len) == 0)
printf("Size: %u bytes\n", size);
size_len = sizeof(size);
size = 0;
if (rfid_protocol_getopt(ph, RFID_OPT_P_TCL_ATS_LEN,
&size, &size_len) == 0) {
data_len = size + 1;
data = malloc(data_len);
if (data) {
if (rfid_protocol_getopt(ph, RFID_OPT_P_TCL_ATS,
data, &data_len) == 0) {
printf("Got ATS of %u bytes: %s\n", size,
hexdump(data, data_len));
}
}
}
}
return rc;
}
static void do_endless_scan()
{
int rc;
int first = 1;
while (1) {
if (first)
putc('\n', stdout);
printf("==> doing %s scan\n", first ? "first" : "successive");
rc = do_scan(first);
if (rc >= 3) {
printf("closing proto\n");
rfid_protocol_close(ph);
}
if (rc >= 2) {
printf("closing layer2\n");
rfid_layer2_close(l2h);
first = 0;
} else
first = 1;
}
}
static void do_regdump(void)
{
u_int8_t buffer[0xff];
int i;
printf("dumping rc632 regs...\n");
rc632_register_dump(rh->ah, buffer);
printf("\n ");
for (i=0; i<=0x0f; i++)
printf(" 0x_%01X",i);
printf("\n-----------------------------------------------------------------------------------\n");
for (i=0; i <= 0x3f; i++) {
if ((i % 0x10) == 0)
printf("0x%01X_:",i/0x10);
printf(" 0x%02X", buffer[i]);
if ((i% 0x10) == 0x0f)
printf("\n");
}
/* print regdump as c-style array*/
printf("u_int8_t rc632_regs[] = {");
for (i = 0; i <= 0x3f; i++) {
if (((i+1) % 0x08) == 1) {
if (i > 7)
printf("//%2d..%2d",i-8,i-1);
printf("\n\t");
}
printf(" 0x%02X, ",buffer[i]);
}
printf("//%2d..%2d\n\t 0 };\n",i-8,i-1);
}
static void do_enum(int layer2)
{
int rc;
//unsigned int size;
//unsigned int size_len = sizeof(size);
unsigned char uid_buf[16];
unsigned int uid_len;
printf("scanning for RFID token on layer %s...\n", l2_names[layer2]);
if (rh->reader->l2_supported & (1 << layer2)) {
l2h = rfid_layer2_init(rh, layer2);
if (!l2h) {
printf("error during layer2(%s)_init\n",
l2_names[layer2]);
return;
}
printf("Layer2 init ok\n");
rc = rfid_layer2_open(l2h);
} else {
printf("error during layer2_open\n");
return ;
}
while (rc>=0) {
if (l2h) {
uid_len = sizeof(uid_buf);
rfid_layer2_getopt(l2h, RFID_OPT_LAYER2_UID, &uid_buf, &uid_len);
printf("Layer 2 success (%s)[%d]: '%s'\n", rfid_layer2_name(l2h), uid_len, hexdump(uid_buf, uid_len));
}
/*
ph = rfid_protocol_scan(l2h);
if (ph) {
printf("Protocol success (%s)\n", rfid_protocol_name(ph));
if (rfid_protocol_getopt(ph, RFID_OPT_PROTO_SIZE,
&size, &size_len) == 0)
printf("Size: %u bytes\n", size);
} else
printf("##############\n");
*/
if (rc >= 0) {
rfid_layer2_close(l2h);
}
rc = rfid_layer2_open(l2h);
}
}
static void do_enum_loop(int layer2, unsigned int delay)
{
while (1) {
do_enum(layer2);
{
unsigned int opt;
unsigned int optlen = sizeof(opt);
/* turn off RF */
opt = 1;
rfid_reader_setopt(rh, RFID_OPT_RDR_RF_KILL, &opt, optlen);
usleep(10 * 1000);
/* turn on RF */
opt = 0;
rfid_reader_setopt(rh, RFID_OPT_RDR_RF_KILL, &opt, optlen);
}
usleep(delay * 1000);
printf("--- next run ---\n");
}
}
#define OPTION_OFFSET 256
static struct option original_opts[] = {
{ "help", 0, 0, 'h' },
{ "layer2", 1, 0, 'l' },
{ "protocol", 1, 0, 'p' },
{ "scan", 0, 0, 's' },
{ "scan-loop", 0, 0, 'S' },
{ "dump", 0, 0, 'd' },
{ "enum", 0, 0, 'e' },
{ "read", 1, 0, 'r' },
{ "write", 1, 0, 'w'},
{ "enum-loop", 1, 0, 'E' },
{0, 0, 0, 0}
};
/* module / option merging code */
static struct option *opts = original_opts;
static unsigned int global_option_offset = 0;
static char *program_name;
static char *program_version = LIBRFID_TOOL_VERSION;
static void free_opts(int reset_offset)
{
if (opts != original_opts) {
free(opts);
opts = original_opts;
if (reset_offset)
global_option_offset = 0;
}
}
static struct option *
merge_options(struct option *oldopts, const struct option *newopts,
unsigned int *option_offset)
{
unsigned int num_old, num_new, i;
struct option *merge;
for (num_old = 0; oldopts[num_old].name; num_old++);
for (num_new = 0; oldopts[num_new].name; num_new++);
global_option_offset += OPTION_OFFSET;
*option_offset = global_option_offset;
merge = malloc(sizeof(struct option) * (num_new + num_old + 1));
memcpy(merge, oldopts, num_old * sizeof(struct option));
free_opts(0); /* Release previous options merged if any */
for (i = 0; i < num_new; i++) {
merge[num_old + i] = newopts[i];
merge[num_old + i].val += *option_offset;
}
memset(merge + num_old + num_new, 0, sizeof(struct option));
return merge;
}
struct rfidtool_module *find_module(const char *name)
{
return NULL;
}
void register_module(struct rfidtool_module *me)
{
struct rfidtool_module *old;
if (strcmp(me->version, program_version) != 0) {
fprintf(stderr, "%s: target `%s' v%s (I'm v%s).\n",
program_name, me->name, me->version, program_version);
exit(1);
}
old = find_module(me->name);
if (old) {
fprintf(stderr, "%s: target `%s' already registered.\n",
program_name, me->name);
exit(1);
}
}
static void help(void)
{
printf( " -s --scan scan until first RFID tag is found\n"
" -S --scan-loop endless scanning loop\n"
" -p --protocol {tcl,mifare-ultralight,mifare-classic,tagit,icode}\n"
" -l --layer2 {iso14443a,iso14443b,iso15693,icode1}\n"
" -d --dump dump rc632 registers\n"
" -e --enum enumerate all tag's in field \n"
" -E --enum-loop <delay> (ms) enumerate endless\n"
" -r --read <secror> read iso15693 sector \n\t\t\t(-1:0-255 stop on error, -2: 0-255 no stop)\n"
" -w --write <sector> write to iso15693 sector data: 01:02:03:04\n"
" -h --help\n");
}
int main(int argc, char **argv)
{
int rc;
char buf[0x100];
int i, len, protocol = -1, layer2 = -1;
#ifdef __MINGW32__
program_name = argv[0];
#else /*__MINGW32__*/
program_name = basename(argv[0]);
#endif/*__MINGW32__*/
printf("%s - (C) 2005-2008 by Harald Welte\n"
"This program is Free Software and has "
"ABSOLUTELY NO WARRANTY\n\n", program_name);
printf("initializing librfid\n");
rfid_init();
while (1) {
int c, option_index = 0;
c = getopt_long(argc, argv, "hp:l:sSdeE:r:w:", opts, &option_index);
if (c == -1)
break;
switch (c) {
case 'w':
//hexread(key, optarg, strlen(optarg));
i = strtol(optarg, NULL, 10);
if (reader_init() < 0)
exit(1);
layer2 = RFID_LAYER2_ISO15693;
iso15693_write(rh,layer2,i,"\x1\x2\x3\x4",4);
rfid_reader_close(rh);
exit(0);
break;
case 'r':
i = strtol(optarg, NULL, 10);
if (reader_init() < 0)
exit(1);
//if (layer2 < 0)
layer2 = RFID_LAYER2_ISO15693;
iso15693_dump(rh,layer2,i);
rfid_reader_close(rh);
exit(0);
break;
case 'E':
i = strtol(optarg, NULL, 10);
if (reader_init() < 0)
exit(1);
if (layer2<0)
layer2 = RFID_LAYER2_ISO14443A;
do_enum_loop(layer2, i>1? i : 500);
rfid_reader_close(rh);
exit(0);
break;
case 'e':
if (reader_init() < 0)
exit(1);
if (layer2 < 0)
layer2 = RFID_LAYER2_ISO14443A;
do_enum(layer2);
rfid_reader_close(rh);
exit(0);
break;
case 'd':
if (reader_init() < 0)
exit(1);
do_regdump();
rfid_reader_close(rh);
break;
case 's':
if (reader_init() < 0)
exit(1);
do_scan(0);
rfid_reader_close(rh);
exit(0);
break;
case 'S':
if (reader_init() < 0)
exit(1);
do_endless_scan();
exit(0);
break;
case 'p':
protocol = proto_by_name(optarg);
if (protocol < 0) {
fprintf(stderr, "unknown protocol `%s'\n",
optarg);
exit(2);
}
break;
case 'l':
layer2 = l2_by_name(optarg);
if (layer2 < 0) {
fprintf(stderr, "unknown layer2 `%s'\n",
optarg);
exit(2);
}
break;
default:
printf("unknown cmd: %c\n",c);
case 'h':
help();
exit(0);
break;
case '?':
exit(0);
}
}
switch (protocol) {
case RFID_PROTOCOL_MIFARE_UL:
case RFID_PROTOCOL_MIFARE_CLASSIC:
layer2 = RFID_LAYER2_ISO14443A;
break;
case -1:
fprintf(stderr, "you have to specify --protocol\n");
exit(2);
}
if (layer2 < 0) {
fprintf(stderr, "you have to specify --layer2\n");
exit(2);
}
if (reader_init() < 0)
exit(1);
if (l2_init(layer2) < 0) {
rfid_reader_close(rh);
exit(1);
}
if (l3_init(protocol) < 0) {
rfid_reader_close(rh);
exit(1);
}
switch (protocol) {
case RFID_PROTOCOL_TCL:
printf("Protocol T=CL\n");
/* we've established T=CL at this point */
printf("selecting Master File\n");
rc = select_mf();
if (rc < 0) {
printf("error selecting MF\n");
break;
}
printf("Getting random challenge, length 255\n");
rc = iso7816_get_challenge(0xff);
if (rc < 0) {
printf("error getting random challenge\n");
break;
}
printf("selecting Passport application\n");
rc = iso7816_select_application();
if (rc < 0) {
printf("error selecting passport application\n");
break;
}
printf("selecting EF 0x1e\n");
rc = iso7816_select_ef(0x011e);
if (rc < 0) {
printf("error selecting EF 0x1e\n");
break;
}
printf("selecting EF 0x01\n");
rc = iso7816_select_ef(0x0101);
if (rc < 0) {
printf("error selecting EF 0x01\n");
break;
}
while (1) {
printf("reading EF1\n");
len = sizeof(buf);
printf("reading ef\n");
rc = iso7816_read_binary(buf, &len);
if (rc < 0) {
printf("error reading EF\n");
break;
}
}
#if 0
for (i = 0; i < 4; i++)
iso7816_get_challenge(0xff);
#endif
break;
case RFID_PROTOCOL_MIFARE_UL:
printf("Protocol Mifare Ultralight\n");
mifare_ulight_read(ph);
#if 0
mifare_ulight_blank(ph);
mifare_ulight_write(ph);
mifare_ulight_read(ph);
#endif
break;
case RFID_PROTOCOL_MIFARE_CLASSIC:
printf("Protocol Mifare Classic\n");
mifare_classic_dump(ph);
break;
default:
printf("unknown protocol %u\n", protocol);
exit(1);
break;
}
rfid_reader_close(rh);
exit(0);
}