254 lines
6.1 KiB
C
254 lines
6.1 KiB
C
/*-
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* Copyright (C) 2010, Romain Tartiere, Romuald Conty.
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* Copyright (C) 2012, Romuald Conty.
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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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#define START_FORMAT_N "Formatting %d sectors ["
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#define DONE_FORMAT "] done.\n"
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MifareClassicKey default_keys[] = {
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{ 0xff,0xff,0xff,0xff,0xff,0xff },
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{ 0xd3,0xf7,0xd3,0xf7,0xd3,0xf7 },
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{ 0xa0,0xa1,0xa2,0xa3,0xa4,0xa5 },
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{ 0xb0,0xb1,0xb2,0xb3,0xb4,0xb5 },
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{ 0x4d,0x3a,0x99,0xc3,0x51,0xdd },
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{ 0x1a,0x98,0x2c,0x7e,0x45,0x9a },
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{ 0xaa,0xbb,0xcc,0xdd,0xee,0xff },
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{ 0x00,0x00,0x00,0x00,0x00,0x00 }
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};
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int format_mifare_classic_1k (MifareTag tag);
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int format_mifare_classic_4k (MifareTag tag);
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int try_format_sector (MifareTag tag, MifareClassicSectorNumber sector);
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static int at_block = 0;
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static int mod_block = 10;
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struct {
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bool fast;
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bool interactive;
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} format_options = {
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.fast = false,
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.interactive = true
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};
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static void
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display_progress (void)
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{
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at_block++;
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if (0 == (at_block % mod_block)) {
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printf ("%d", at_block);
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fflush (stdout);
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} else {
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printf (".");
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fflush (stdout);
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}
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}
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int
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format_mifare_classic_1k (MifareTag tag)
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{
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printf (START_FORMAT_N, 16);
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for (int sector = 0; sector < 16; sector++) {
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if (!try_format_sector (tag, sector))
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return 0;
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}
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printf (DONE_FORMAT);
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return 1;
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}
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int
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format_mifare_classic_4k (MifareTag tag)
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{
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printf (START_FORMAT_N, 32 + 8);
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for (int sector = 0; sector < (32 + 8); sector++) {
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if (!try_format_sector (tag, sector))
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return 0;
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}
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printf (DONE_FORMAT);
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return 1;
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}
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int
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try_format_sector (MifareTag tag, MifareClassicSectorNumber sector)
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{
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display_progress ();
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for (size_t i = 0; i < (sizeof (default_keys) / sizeof (MifareClassicKey)); i++) {
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MifareClassicBlockNumber block = mifare_classic_sector_last_block (sector);
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if ((0 == mifare_classic_connect (tag)) && (0 == mifare_classic_authenticate (tag, block, default_keys[i], MFC_KEY_A))) {
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if (0 == mifare_classic_format_sector (tag, sector)) {
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mifare_classic_disconnect (tag);
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return 1;
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} else if (EIO == errno) {
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err (EXIT_FAILURE, "sector %d", sector);
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}
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mifare_classic_disconnect (tag);
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}
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if ((0 == mifare_classic_connect (tag)) && (0 == mifare_classic_authenticate (tag, block, default_keys[i], MFC_KEY_B))) {
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if (0 == mifare_classic_format_sector (tag, sector)) {
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mifare_classic_disconnect (tag);
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return 1;
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} else if (EIO == errno) {
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err (EXIT_FAILURE, "sector %d", sector);
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}
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mifare_classic_disconnect (tag);
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}
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}
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warnx ("No known authentication key for sector %d", sector);
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return 0;
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}
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static void
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usage(char *progname)
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{
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fprintf (stderr, "usage: %s [-fy]\n", progname);
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fprintf (stderr, "\nOptions:\n");
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fprintf (stderr, " -f Fast format (only erase MAD)\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 *device = NULL;
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MifareTag *tags = NULL;
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while ((ch = getopt (argc, argv, "fhy")) != -1) {
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switch (ch) {
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case 'f':
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format_options.fast = true;
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break;
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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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format_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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// Remaining args, if any, are in argv[optind .. (argc-1)]
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nfc_connstring devices[8];
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size_t device_count;
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nfc_context *context;
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nfc_init (&context);
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device_count = nfc_list_devices (context, devices, 8);
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if (device_count <= 0)
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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_open (context, devices[d]);
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if (!device) {
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warnx ("nfc_open() 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_close (device);
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errx (EXIT_FAILURE, "Error listing Mifare Classic tag.");
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}
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for (int i = 0; (!error) && tags[i]; i++) {
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switch (freefare_get_tag_type (tags[i])) {
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case CLASSIC_1K:
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case CLASSIC_4K:
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break;
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default:
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continue;
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}
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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 format = true;
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if (format_options.interactive) {
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printf ("Format [yN] ");
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fgets (buffer, BUFSIZ, stdin);
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format = ((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 (format) {
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enum mifare_tag_type tt = freefare_get_tag_type (tags[i]);
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at_block = 0;
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if (format_options.fast) {
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printf (START_FORMAT_N, (tt == CLASSIC_1K) ? 1 : 2);
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if (!try_format_sector (tags[i], 0x00))
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break;
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if (tt == CLASSIC_4K)
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if (!try_format_sector (tags[i], 0x10))
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break;
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printf (DONE_FORMAT);
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continue;
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}
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switch (tt) {
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case CLASSIC_1K:
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mod_block = 4;
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if (!format_mifare_classic_1k (tags[i]))
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error = 1;
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break;
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case CLASSIC_4K:
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mod_block = 10;
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if (!format_mifare_classic_4k (tags[i]))
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error = 1;
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break;
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default:
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/* Keep compiler quiet */
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break;
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}
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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_close (device);
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}
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nfc_exit (context);
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exit (error);
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}
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