libfreefare/examples/mifare-desfire-format.c
Romain Tartiere 9872a1b087 Rename DESFIRE_4K to DESFIRE.
The code can work with virtually any size of DESFire (since the operating
system embedded in the card handle almost everything), so there is no need for
us to distinguish cards of different sizes.
2010-07-27 08:44:12 +00:00

148 lines
3.4 KiB
C

/*-
* Copyright (C) 2010, Romain Tartiere.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at your
* option) any later version.
*
* 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 Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
* $Id$
*/
#include "config.h"
#include <err.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <nfc/nfc.h>
#include <freefare.h>
uint8_t null_key_data[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
struct {
bool interactive;
} format_options = {
.interactive = true
};
void
usage(char *progname)
{
fprintf (stderr, "usage: %s [-y]\n", progname);
fprintf (stderr, "\nOptions:\n");
fprintf (stderr, " -y Do not ask for confirmation (dangerous)\n");
}
int
main(int argc, char *argv[])
{
int ch;
int error = EXIT_SUCCESS;
nfc_device_t *device = NULL;
MifareTag *tags = NULL;
while ((ch = getopt (argc, argv, "hy")) != -1) {
switch (ch) {
case 'h':
usage(argv[0]);
exit (EXIT_SUCCESS);
break;
case 'y':
format_options.interactive = false;
break;
default:
usage(argv[0]);
exit (EXIT_FAILURE);
}
}
argc -= optind;
argv += optind;
nfc_device_desc_t devices[8];
size_t device_count;
nfc_list_devices (devices, 8, &device_count);
if (!device_count)
errx (EXIT_FAILURE, "No NFC device found.");
for (size_t d = 0; d < device_count; d++) {
device = nfc_connect (&(devices[d]));
if (!device) {
warnx ("nfc_connect() failed.");
error = EXIT_FAILURE;
continue;
}
tags = freefare_get_tags (device);
if (!tags) {
nfc_disconnect (device);
errx (EXIT_FAILURE, "Error listing Mifare DESFire tags.");
}
for (int i = 0; (!error) && tags[i]; i++) {
if (DESFIRE != freefare_get_tag_type (tags[i]))
continue;
char *tag_uid = freefare_get_tag_uid (tags[i]);
char buffer[BUFSIZ];
printf ("Found %s with UID %s.", freefare_get_tag_friendly_name (tags[i]), tag_uid);
bool format = true;
if (format_options.interactive) {
printf ("Format [yN] ");
fgets (buffer, BUFSIZ, stdin);
format = ((buffer[0] == 'y') || (buffer[0] == 'Y'));
} else {
printf ("\n");
}
if (format) {
int res;
MifareDESFireKey default_key = mifare_desfire_des_key_new_with_version (null_key_data);
res = mifare_desfire_connect (tags[i]);
if (res < 0) {
warnx ("Can't connect to Mifare DESFire target.");
error = EXIT_FAILURE;
break;
}
res = mifare_desfire_authenticate (tags[i], 0, default_key);
if (res < 0) {
warnx ("Can't authenticate on Mifare DESFire target.");
error = EXIT_FAILURE;
break;
}
res = mifare_desfire_format_picc (tags[i]);
if (res < 0) {
warn ("Can't format PICC.");
error = EXIT_FAILURE;
break;
}
mifare_desfire_disconnect (tags[i]);
}
free (tag_uid);
}
freefare_free_tags (tags);
nfc_disconnect (device);
}
exit (error);
} /* main() */