99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
#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 <nfc/nfc.h>
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#include <freefare.h>
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#define block_address(sector, block) ((sector * 4) + block)
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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
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try_format_sector (MifareClassicTag tag, MifareSectorNumber sector)
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{
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for (int i = 0; i < (sizeof (default_keys) / sizeof (MifareClassicKey)); i++) {
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printf (" s=%d i=%d \n", sector, i);
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if ((0 == mifare_classic_connect (tag)) && (0 == mifare_classic_authenticate (tag, block_address (sector, 0), 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 0;
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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_address (sector, 0), 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 0;
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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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return -1;
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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 error = 0;
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nfc_device_t *device = NULL;
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MifareClassicTag *tags = NULL;
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MifareClassicTag *tag = NULL;
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device = nfc_connect (NULL);
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if (!device)
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errx (EXIT_FAILURE, "No NFC device found.");
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tags = mifare_classic_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 classic tag.");
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}
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if (!tags[0]) {
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mifare_classic_free_tags (tags);
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nfc_disconnect (device);
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errx (EXIT_FAILURE, "No MIFARE classic tag on NFC device.");
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}
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tag = tags;
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while (*tag) {
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char *tag_uid = mifare_classic_get_uid (*tag);
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/* FIXME get the tag size */
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size_t sector_count = 15;
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for (size_t n = 0; n < sector_count; n++) {
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if (try_format_sector (*tag, n) < 0) {
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warnx ("%s: Can't format sector %ld (0x%02lx)", tag_uid, n, n);
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error = 1;
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}
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}
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free(tag_uid);
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tag++;
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}
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mifare_classic_free_tags (tags);
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nfc_disconnect (device);
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exit (error);
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}
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