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r3df0xx 2022-05-23 21:47:24 +03:00
commit 0121fa40a0
2 changed files with 43 additions and 32 deletions
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11
ReadMe.md
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@ -11,7 +11,14 @@ Our goal is to make any features possible in this device without any stupid limi
You should clone with
```shell
$ git clone --recursive https://github.com/flipperdevices/flipperzero-firmware.git
$ git clone --recursive https://github.com/Eng1n33r/flipperzero-firmware.git
```
# Clone the Repository
You should clone with
```shell
$ git clone --recursive https://github.com/Eng1n33r/flipperzero-firmware.git
```
# Update firmware
@ -50,7 +57,7 @@ One liner: `make flash_radio`
## With USB DFU
1. Download latest [Firmware](https://update.flipperzero.one)
1. Download latest [Firmware](https://github.com/Eng1n33r/flipperzero-firmware/releases)
2. Reboot Flipper to Bootloader
- Press and hold `← Left` + `↩ Back` for reset

64
lib/nfc_protocols/emv.c
View file

@ -79,34 +79,34 @@ static void emv_trace(FuriHalNfcTxRxContext* tx_rx, const char* message) {
static bool emv_decode_response(uint8_t* buff, uint16_t len, EmvApplication* app) {
uint16_t i = 0;
uint16_t tag = 0, fb = 0;
uint16_t tag = 0, first_byte = 0;
uint16_t tlen = 0;
bool success = false;
while(i < len) {
fb = buff[i]; // first byte
if((fb & 31) == 31) { // 2-byte tag
tag = buff[i] << 8 | buff[i+1];
first_byte = buff[i];
if((first_byte & 31) == 31) { // 2-byte tag
tag = buff[i] << 8 | buff[i + 1];
i++;
FURI_LOG_T(TAG, " 2-byte TLV EMV tag: %x",tag);
FURI_LOG_T(TAG, " 2-byte TLV EMV tag: %x", tag);
} else {
tag = buff[i];
FURI_LOG_T(TAG, " 1-byte TLV EMV tag: %x",tag);
FURI_LOG_T(TAG, " 1-byte TLV EMV tag: %x", tag);
}
i++;
tlen=buff[i];
if((tlen & 128) == 128) { // long length value
tlen = buff[i];
if((tlen & 128) == 128) { // long length value
i++;
tlen=buff[i];
FURI_LOG_T(TAG, " 2-byte TLV length: %d",tlen);
tlen = buff[i];
FURI_LOG_T(TAG, " 2-byte TLV length: %d", tlen);
} else {
FURI_LOG_T(TAG, " 1-byte TLV length: %d",tlen);
FURI_LOG_T(TAG, " 1-byte TLV length: %d", tlen);
}
i++;
if((fb & 32) == 32) { // "Constructed" -- contains more TLV data to parse
FURI_LOG_T(TAG, "Constructed TLV %x",tag);
if (!emv_decode_response(&buff[i], tlen, app)) {
printf( "Failed to decode response for %x \r\n",tag);
if((first_byte & 32) == 32) { // "Constructed" -- contains more TLV data to parse
FURI_LOG_T(TAG, "Constructed TLV %x", tag);
if(!emv_decode_response(&buff[i], tlen, app)) {
FURI_LOG_T(TAG, "Failed to decode response for %x", tag);
// return false;
} else {
success = true;
@ -117,7 +117,7 @@ static bool emv_decode_response(uint8_t* buff, uint16_t len, EmvApplication* app
app->aid_len = tlen;
memcpy(app->aid, &buff[i], tlen);
success = true;
FURI_LOG_T(TAG, "found EMV_TAG_AID %x",tag);
FURI_LOG_T(TAG, "found EMV_TAG_AID %x", tag);
break;
case EMV_TAG_PRIORITY:
memcpy(&app->priority, &buff[i], tlen);
@ -128,30 +128,34 @@ static bool emv_decode_response(uint8_t* buff, uint16_t len, EmvApplication* app
app->name[tlen] = '\0';
app->name_found = true;
success = true;
FURI_LOG_T(TAG, "found EMV_TAG_CARD_NAME %x : %s",tag,app->name);
FURI_LOG_T(TAG, "found EMV_TAG_CARD_NAME %x : %s", tag, app->name);
break;
case EMV_TAG_PDOL:
memcpy(app->pdol.data, &buff[i], tlen);
app->pdol.size = tlen;
success = true;
FURI_LOG_T(TAG, "found EMV_TAG_PDOL %x (len=%d)",tag,tlen);
FURI_LOG_T(TAG, "found EMV_TAG_PDOL %x (len=%d)", tag, tlen);
break;
case EMV_TAG_AFL:
memcpy(app->afl.data, &buff[i], tlen);
app->afl.size = tlen;
success = true;
FURI_LOG_T(TAG, "found EMV_TAG_AFL %x (len=%d)",tag,tlen);
FURI_LOG_T(TAG, "found EMV_TAG_AFL %x (len=%d)", tag, tlen);
break;
case EMV_TAG_CARD_NUM: // Track 2 Equivalent Data. 0xD0 delimits PAN from expiry (YYMM)
for (int x=1; x < tlen; x++) {
if (buff[i+x+1] > 0xD0) {
memcpy(app->card_number, &buff[i], x+1);
app->card_number_len = x+1;
case EMV_TAG_CARD_NUM: // Track 2 Equivalent Data. 0xD0 delimits PAN from expiry (YYMM)
for(int x = 1; x < tlen; x++) {
if(buff[i + x + 1] > 0xD0) {
memcpy(app->card_number, &buff[i], x + 1);
app->card_number_len = x + 1;
break;
}
}
}
success = true;
FURI_LOG_T(TAG, "found EMV_TAG_CARD_NUM %x (len=%d)",EMV_TAG_CARD_NUM,app->card_number_len);
FURI_LOG_T(
TAG,
"found EMV_TAG_CARD_NUM %x (len=%d)",
EMV_TAG_CARD_NUM,
app->card_number_len);
break;
case EMV_TAG_PAN:
memcpy(app->card_number, &buff[i], tlen);
@ -160,15 +164,15 @@ static bool emv_decode_response(uint8_t* buff, uint16_t len, EmvApplication* app
break;
case EMV_TAG_EXP_DATE:
app->exp_year = buff[i];
app->exp_month = buff[i+1];
app->exp_month = buff[i + 1];
success = true;
break;
case EMV_TAG_CURRENCY_CODE:
app->currency_code = (buff[i] << 8 | buff[i+1]);
app->currency_code = (buff[i] << 8 | buff[i + 1]);
success = true;
break;
case EMV_TAG_COUNTRY_CODE:
app->country_code = (buff[i] << 8 | buff[i+1]);
app->country_code = (buff[i] << 8 | buff[i + 1]);
success = true;
break;
}
@ -299,7 +303,7 @@ static bool emv_get_processing_options(FuriHalNfcTxRxContext* tx_rx, EmvApplicat
if(furi_hal_nfc_tx_rx(tx_rx, 300)) {
emv_trace(tx_rx, "Get processing options answer:");
if(emv_decode_response(tx_rx->rx_data, tx_rx->rx_bits / 8, app)) {
if (app->card_number_len > 0) {
if(app->card_number_len > 0) {
card_num_read = true;
}
}