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Add support for MIFARE Classic 4K.

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- New mifare_classic_first_sector_block(), mifare_classic_last_sector_block() functions to ease detection of sectors boundaries;
  - New unit tests for mifare_classic_first_sector_block() and mifare_classic_last_sector_block();
  - Start to update the API for consistently using blocks and not mixing blocks and sectors with mifare_classic_*() functions;
  - Update the mifare-classic-format(1) example to handle MIFARE Classic 1k and 4k.

Many thanks to Johann Dantant from SpringCard for giving me MIFARE Classic 4k cards.
This commit is contained in:
Romain Tartiere 2010-02-23 02:12:18 +00:00
parent 24a9198f41
commit 5f7f8ffe2a
5 changed files with 151 additions and 57 deletions
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101
examples/mifare-classic-format.c
View file

@ -26,8 +26,6 @@
#include <freefare.h>
#define block_address(sector, block) ((sector * 4) + block)
MifareClassicKey default_keys[] = {
{ 0xff,0xff,0xff,0xff,0xff,0xff },
{ 0xd3,0xf7,0xd3,0xf7,0xd3,0xf7 },
@ -38,34 +36,61 @@ MifareClassicKey default_keys[] = {
{ 0xaa,0xbb,0xcc,0xdd,0xee,0xff },
{ 0x00,0x00,0x00,0x00,0x00,0x00 }
};
int format_mifare_classic_1k (MifareTag tag);
int format_mifare_classic_4k (MifareTag tag);
int try_format_sector (MifareTag tag, MifareClassicBlockNumber block);
int
try_format_sector (MifareTag tag, MifareSectorNumber sector)
format_mifare_classic_1k (MifareTag tag)
{
for (int sector = 0; sector < 16; sector++) {
if (!try_format_sector (tag, sector * 4))
return 0;
}
return 1;
}
int
format_mifare_classic_4k (MifareTag tag)
{
for (int sector = 0; sector < 32; sector++) {
if (!try_format_sector (tag, sector * 4))
return 0;
}
for (int sector = 0; sector < 8; sector++) {
if (!try_format_sector (tag, 128 + sector * 16))
return 0;
}
return 1;
}
int
try_format_sector (MifareTag tag, MifareClassicBlockNumber block)
{
for (int i = 0; i < (sizeof (default_keys) / sizeof (MifareClassicKey)); i++) {
printf (" s=%d i=%d \n", sector, i);
if ((0 == mifare_classic_connect (tag)) && (0 == mifare_classic_authenticate (tag, block_address (sector, 0), default_keys[i], MFC_KEY_A))) {
if (0 == mifare_classic_format_sector (tag, sector)) {
if ((0 == mifare_classic_connect (tag)) && (0 == mifare_classic_authenticate (tag, block, default_keys[i], MFC_KEY_A))) {
if (0 == mifare_classic_format_sector (tag, block)) {
mifare_classic_disconnect (tag);
return 0;
return 1;
} else if (EIO == errno) {
err (EXIT_FAILURE, "sector %d", sector);
err (EXIT_FAILURE, "block %d", block);
}
mifare_classic_disconnect (tag);
}
if ((0 == mifare_classic_connect (tag)) && (0 == mifare_classic_authenticate (tag, block_address (sector, 0), default_keys[i], MFC_KEY_B))) {
if (0 == mifare_classic_format_sector (tag, sector)) {
if ((0 == mifare_classic_connect (tag)) && (0 == mifare_classic_authenticate (tag, block, default_keys[i], MFC_KEY_B))) {
if (0 == mifare_classic_format_sector (tag, block)) {
mifare_classic_disconnect (tag);
return 0;
return 1;
} else if (EIO == errno) {
err (EXIT_FAILURE, "sector %d", sector);
err (EXIT_FAILURE, "block %d", block);
}
mifare_classic_disconnect (tag);
}
}
return -1;
warnx ("No known authentication key for block %d", block);
return 0;
}
int
@ -74,7 +99,6 @@ main(int argc, char *argv[])
int error = 0;
nfc_device_t *device = NULL;
MifareTag *tags = NULL;
MifareTag *tag = NULL;
device = nfc_connect (NULL);
if (!device)
@ -86,34 +110,39 @@ main(int argc, char *argv[])
errx (EXIT_FAILURE, "Error listing MIFARE classic tag.");
}
if (!tags[0]) {
freefare_free_tags (tags);
nfc_disconnect (device);
errx (EXIT_FAILURE, "No MIFARE tag on NFC device.");
}
for (int i = 0; (!error) && tags[i]; i++) {
switch (freefare_get_tag_type (tags[i])) {
case CLASSIC_1K:
case CLASSIC_4K:
break;
default:
continue;
}
tag = tags;
char *tag_uid = mifare_classic_get_uid (tags[i]);
char buffer[BUFSIZ];
if ((freefare_get_tag_type (*tag) != CLASSIC_1K) &&
(freefare_get_tag_type (*tag) != CLASSIC_4K)) {
errx (EXIT_FAILURE, "Not a MIFARE Classic tag.");
}
printf ("Found MIFARE Classic %s. Format [yN] ", tag_uid);
fgets (buffer, BUFSIZ, stdin);
bool format = ((buffer[0] == 'y') || (buffer[0] == 'Y'));
while (*tag) {
char *tag_uid = mifare_classic_get_uid (*tag);
/* FIXME get the tag size */
size_t sector_count = 15;
for (size_t n = 0; n < sector_count; n++) {
if (try_format_sector (*tag, n) < 0) {
warnx ("%s: Can't format sector %ld (0x%02lx)", tag_uid, n, n);
error = 1;
if (format) {
switch (freefare_get_tag_type (tags[i])) {
case CLASSIC_1K:
if (!format_mifare_classic_1k (tags[i]))
error = 1;
break;
case CLASSIC_4K:
if (!format_mifare_classic_4k (tags[i]))
error = 1;
break;
default:
/* Keep compiler quiet */
break;
}
}
free(tag_uid);
tag++;
free (tag_uid);
}
freefare_free_tags (tags);