dd8e031e8c
Don't connect it to the build yet because the corresponding code in the library has not been committed yet: I want to keep a track of modifications I do in the VCS.
148 lines
3.5 KiB
C
148 lines
3.5 KiB
C
/*-
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* Copyright (C) 2010, Romain Tartiere.
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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* $Id$
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*/
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#include "config.h"
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#include <err.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <nfc/nfc.h>
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#include <freefare.h>
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uint8_t null_key_data[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
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struct {
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bool interactive;
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} configure_options = {
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.interactive = true
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};
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void
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usage(char *progname)
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{
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fprintf (stderr, "usage: %s [-y]\n", progname);
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fprintf (stderr, "\nOptions:\n");
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fprintf (stderr, " -y Do not ask for confirmation (dangerous)\n");
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}
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int
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main(int argc, char *argv[])
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{
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int ch;
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int error = EXIT_SUCCESS;
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nfc_device_t *device = NULL;
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MifareTag *tags = NULL;
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while ((ch = getopt (argc, argv, "hy")) != -1) {
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switch (ch) {
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case 'h':
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usage(argv[0]);
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exit (EXIT_SUCCESS);
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break;
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case 'y':
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configure_options.interactive = false;
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break;
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default:
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usage(argv[0]);
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exit (EXIT_FAILURE);
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}
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}
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argc -= optind;
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argv += optind;
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nfc_device_desc_t devices[8];
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size_t device_count;
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nfc_list_devices (devices, 8, &device_count);
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if (!device_count)
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errx (EXIT_FAILURE, "No NFC device found.");
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for (size_t d = 0; d < device_count; d++) {
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device = nfc_connect (&(devices[d]));
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if (!device) {
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warnx ("nfc_connect() failed.");
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error = EXIT_FAILURE;
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continue;
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}
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tags = freefare_get_tags (device);
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if (!tags) {
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nfc_disconnect (device);
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errx (EXIT_FAILURE, "Error listing Mifare DESFire tags.");
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}
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for (int i = 0; (!error) && tags[i]; i++) {
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if (DESFIRE != freefare_get_tag_type (tags[i]))
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continue;
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char *tag_uid = freefare_get_tag_uid (tags[i]);
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char buffer[BUFSIZ];
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printf ("Found %s with UID %s. ", freefare_get_tag_friendly_name (tags[i]), tag_uid);
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bool do_it = true;
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if (configure_options.interactive) {
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printf ("Configure random UID (this cannot be undone) [yN] ");
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fgets (buffer, BUFSIZ, stdin);
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do_it = ((buffer[0] == 'y') || (buffer[0] == 'Y'));
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} else {
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printf ("\n");
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}
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if (do_it) {
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int res;
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MifareDESFireKey default_key = mifare_desfire_des_key_new_with_version (null_key_data);
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res = mifare_desfire_connect (tags[i]);
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if (res < 0) {
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warnx ("Can't connect to Mifare DESFire target.");
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error = EXIT_FAILURE;
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break;
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}
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res = mifare_desfire_authenticate (tags[i], 0, default_key);
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if (res < 0) {
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freefare_perror (tags[i], "mifare_desfire_authenticate");
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error = EXIT_FAILURE;
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break;
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}
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res = mifare_desfire_set_configuration (tags[i], false, true);
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if (res < 0) {
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freefare_perror (tags[i], "mifare_desfire_set_configuration");
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error = EXIT_FAILURE;
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break;
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}
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mifare_desfire_disconnect (tags[i]);
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}
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free (tag_uid);
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}
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freefare_free_tags (tags);
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nfc_disconnect (device);
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}
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exit (error);
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} /* main() */
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