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added ndef tlv parsing

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This commit is contained in:
merlokk 2019-03-05 00:48:02 +02:00
parent 0a30e03aaf
commit a2f8f0628c
1 changed files with 58 additions and 0 deletions

58
client/mifare/ndef.c
View file

@ -9,8 +9,66 @@
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
#include "ndef.h" #include "ndef.h"
#include "ui.h"
uint16_t ndefTLVGetLength(uint8_t *data, size_t *indx) {
uint16_t len = 0;
if (data[0] == 0xff) {
len = (data[1] << 8) + data[2];
*indx += 3;
} else {
len = data[0];
*indx += 1;
}
return len;
}
int NDEFDecodeAndPrint(uint8_t *ndef, size_t ndefLen, bool verbose) { int NDEFDecodeAndPrint(uint8_t *ndef, size_t ndefLen, bool verbose) {
size_t indx = 0;
while (indx < ndefLen) {
switch (ndef[indx]) {
case 0x00: {
indx++;
uint16_t len = ndefTLVGetLength(&ndef[indx], &indx);
PrintAndLogEx(INFO, "NDEF NULL block.");
if (len)
PrintAndLogEx(WARNING, "NDEF NULL block size must be 0 instead of %d.", len);
indx += len;
break;
}
case 0x03: {
indx++;
uint16_t len = ndefTLVGetLength(&ndef[indx], &indx);
PrintAndLogEx(INFO, "NDEF message. len: %d", len);
// ndef decode
indx += len;
break;
}
case 0xfd: {
indx++;
uint16_t len = ndefTLVGetLength(&ndef[indx], &indx);
PrintAndLogEx(INFO, "NDEF proprietary info. Skipped %d bytes.", len);
indx += len;
break;
}
case 0xfe: {
PrintAndLogEx(INFO, "NDEF Terminator. Done.");
return 0;
break;
}
default: {
PrintAndLogEx(ERR, "unknown tag 0x%02x", ndef[indx]);
return 1;
}
}
}
return 0; return 0;
} }