void
test_tlv_decode_short (void)
{
uint8_t *res;
uint16_t size;
uint8_t type;
res = tlv_decode (eshortdata, &type, &size);
cut_assert_equal_int (3, type, cut_message ("Wrong type"));
cut_assert_equal_int (sizeof (shortdata), size, cut_message ("Wrong value length"));
cut_assert_equal_memory (shortdata, sizeof (shortdata), res, size, cut_message ("Wrong decoded value"));
free (res);
}
int
mifare_classic_read_ndef(MifareTag tag, char * buffer, char *max_size)
{
int error = EXIT_SUCCESS;
Mad mad;
// NFCForum card has a MAD, load it.
if (0 == mifare_classic_connect (tag)) {
} else {
return -2;
}
if ((mad = mad_read (tag))) {
// Dump the NFCForum application using MAD information
ssize_t len;
if ((len = mifare_application_read (tag, mad, mad_nfcforum_aid, buffer, max_size, mifare_classic_nfcforum_public_key_a, MFC_KEY_A)) != -1) {
uint8_t tlv_type;
uint16_t tlv_data_len;
uint8_t * tlv_data;
uint8_t * pbuffer = buffer;
uint8_t found = false;
while (!found)
{
tlv_data = tlv_decode (pbuffer, &tlv_type, &tlv_data_len);
switch (tlv_type) {
case 0x00:
printf ("NFC Forum application contains a \"NULL TLV\", Skipping...\n"); // According to [ANNFC1K4K], we skip this Tag to read further TLV blocks.
pbuffer += tlv_record_length(pbuffer, NULL, NULL);
if (pbuffer >= buffer + sizeof(buffer)) {
error= -3;
found = true;
}
break;
case 0x03:
printf ("NFC Forum application contains a \"NDEF Message TLV\".\n");
found = true;
error = tlv_data_len;
memcpy(buffer,tlv_data,tlv_data_len);
break;
case 0xFD:
printf ("NFC Forum application contains a \"Proprietary TLV\", Skipping...\n"); // According to [ANNFC1K4K], we can skip this TLV to read further TLV blocks.
pbuffer += tlv_record_length(pbuffer, NULL, NULL);
if (pbuffer >= buffer + sizeof(buffer)) {
error= -4;
found = true;
}
break;
case 0xFE:
printf ("NFC Forum application contains a \"Terminator TLV\", no available data.\n");
error= -5;
found = true;
break;
default:
printf ("NFC Forum application contains an invalid TLV.\n");
error= -6;
found = true;
}
}
} else {
printf ("No NFC Forum application.\n");
error= -7;
}
} else {
printf ("No MAD detected.\n");
}
vPortFree (mad);
return error;
}
