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unleashed-firmware/applications/nfc/nfc_worker.c
gornekich b0f582df99
[FL-1972], [FL-1920] Mifare Ultralight and NTAG separation (#918) 
* nfc: rename read mifare ultralight menu
* nfc: separate ntag and mifare ultralight
* nfc: save Mifare Ultralight type
* nfc: add valid ack and nack messages
* nfc: add compatible write command implementation
* nfc: support f6 target
2021-12-21 15:33:17 +03:00

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30 KiB
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#include "nfc_worker_i.h"
#include <furi-hal.h>
#include "nfc_protocols/emv_decoder.h"
#include "nfc_protocols/mifare_ultralight.h"
#define TAG "NfcWorker"
/***************************** NFC Worker API *******************************/
NfcWorker* nfc_worker_alloc() {
NfcWorker* nfc_worker = furi_alloc(sizeof(NfcWorker));
// Worker thread attributes
nfc_worker->thread_attr.name = "NfcWorker";
nfc_worker->thread_attr.stack_size = 8192;
nfc_worker->callback = NULL;
nfc_worker->context = NULL;
// Initialize rfal
if(!furi_hal_nfc_is_busy()) {
nfc_worker_change_state(nfc_worker, NfcWorkerStateReady);
} else {
nfc_worker_change_state(nfc_worker, NfcWorkerStateBroken);
}
return nfc_worker;
}
void nfc_worker_free(NfcWorker* nfc_worker) {
furi_assert(nfc_worker);
free(nfc_worker);
}
NfcWorkerState nfc_worker_get_state(NfcWorker* nfc_worker) {
return nfc_worker->state;
}
void nfc_worker_start(
NfcWorker* nfc_worker,
NfcWorkerState state,
NfcDeviceData* dev_data,
NfcWorkerCallback callback,
void* context) {
furi_assert(nfc_worker);
furi_assert(dev_data);
while(nfc_worker->state != NfcWorkerStateReady) {
osDelay(10);
}
nfc_worker->callback = callback;
nfc_worker->context = context;
nfc_worker->dev_data = dev_data;
nfc_worker_change_state(nfc_worker, state);
nfc_worker->thread = osThreadNew(nfc_worker_task, nfc_worker, &nfc_worker->thread_attr);
}
void nfc_worker_stop(NfcWorker* nfc_worker) {
furi_assert(nfc_worker);
if(nfc_worker->state == NfcWorkerStateBroken || nfc_worker->state == NfcWorkerStateReady) {
return;
}
nfc_worker_change_state(nfc_worker, NfcWorkerStateStop);
}
void nfc_worker_change_state(NfcWorker* nfc_worker, NfcWorkerState state) {
nfc_worker->state = state;
}
/***************************** NFC Worker Thread *******************************/
void nfc_worker_task(void* context) {
NfcWorker* nfc_worker = context;
furi_hal_power_insomnia_enter();
furi_hal_nfc_exit_sleep();
if(nfc_worker->state == NfcWorkerStateDetect) {
nfc_worker_detect(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateEmulate) {
nfc_worker_emulate(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateReadEMVApp) {
nfc_worker_read_emv_app(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateReadEMV) {
nfc_worker_read_emv(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateEmulateApdu) {
nfc_worker_emulate_apdu(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateReadMifareUl) {
nfc_worker_read_mifare_ul(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateEmulateMifareUl) {
nfc_worker_emulate_mifare_ul(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateField) {
nfc_worker_field(nfc_worker);
}
furi_hal_nfc_deactivate();
nfc_worker_change_state(nfc_worker, NfcWorkerStateReady);
furi_hal_power_insomnia_exit();
osThreadExit();
}
void nfc_worker_detect(NfcWorker* nfc_worker) {
rfalNfcDevice* dev_list;
rfalNfcDevice* dev;
uint8_t dev_cnt;
NfcDeviceCommonData* result = &nfc_worker->dev_data->nfc_data;
while(nfc_worker->state == NfcWorkerStateDetect) {
if(furi_hal_nfc_detect(&dev_list, &dev_cnt, 1000, true)) {
// Process first found device
dev = &dev_list[0];
result->uid_len = dev->nfcidLen;
memcpy(result->uid, dev->nfcid, dev->nfcidLen);
if(dev->type == RFAL_NFC_LISTEN_TYPE_NFCA) {
result->device = NfcDeviceNfca;
result->atqa[0] = dev->dev.nfca.sensRes.anticollisionInfo;
result->atqa[1] = dev->dev.nfca.sensRes.platformInfo;
result->sak = dev->dev.nfca.selRes.sak;
if(mf_ul_check_card_type(
dev->dev.nfca.sensRes.anticollisionInfo,
dev->dev.nfca.sensRes.platformInfo,
dev->dev.nfca.selRes.sak)) {
result->protocol = NfcDeviceProtocolMifareUl;
} else if(dev->rfInterface == RFAL_NFC_INTERFACE_ISODEP) {
result->protocol = NfcDeviceProtocolEMV;
} else {
result->protocol = NfcDeviceProtocolUnknown;
}
} else if(dev->type == RFAL_NFC_LISTEN_TYPE_NFCB) {
result->device = NfcDeviceNfcb;
} else if(dev->type == RFAL_NFC_LISTEN_TYPE_NFCF) {
result->device = NfcDeviceNfcf;
} else if(dev->type == RFAL_NFC_LISTEN_TYPE_NFCV) {
result->device = NfcDeviceNfcv;
}
// Notify caller and exit
if(nfc_worker->callback) {
nfc_worker->callback(nfc_worker->context);
}
break;
}
osDelay(100);
}
}
void nfc_worker_emulate(NfcWorker* nfc_worker) {
NfcDeviceCommonData* data = &nfc_worker->dev_data->nfc_data;
while(nfc_worker->state == NfcWorkerStateEmulate) {
if(furi_hal_nfc_listen(data->uid, data->uid_len, data->atqa, data->sak, false, 100)) {
FURI_LOG_D(TAG, "Reader detected");
}
osDelay(10);
}
}
void nfc_worker_read_emv_app(NfcWorker* nfc_worker) {
ReturnCode err;
rfalNfcDevice* dev_list;
EmvApplication emv_app = {};
uint8_t dev_cnt = 0;
uint8_t tx_buff[255] = {};
uint16_t tx_len = 0;
uint8_t* rx_buff;
uint16_t* rx_len;
NfcDeviceData* result = nfc_worker->dev_data;
while(nfc_worker->state == NfcWorkerStateReadEMVApp) {
memset(&emv_app, 0, sizeof(emv_app));
if(furi_hal_nfc_detect(&dev_list, &dev_cnt, 1000, false)) {
// Card was found. Check that it supports EMV
if(dev_list[0].rfInterface == RFAL_NFC_INTERFACE_ISODEP) {
result->nfc_data.uid_len = dev_list[0].dev.nfca.nfcId1Len;
result->nfc_data.atqa[0] = dev_list[0].dev.nfca.sensRes.anticollisionInfo;
result->nfc_data.atqa[1] = dev_list[0].dev.nfca.sensRes.platformInfo;
result->nfc_data.sak = dev_list[0].dev.nfca.selRes.sak;
memcpy(
result->nfc_data.uid, dev_list[0].dev.nfca.nfcId1, result->nfc_data.uid_len);
result->nfc_data.protocol = NfcDeviceProtocolEMV;
FURI_LOG_D(TAG, "Send select PPSE command");
tx_len = emv_prepare_select_ppse(tx_buff);
err = furi_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
if(err != ERR_NONE) {
FURI_LOG_D(TAG, "Error during selection PPSE request: %d", err);
furi_hal_nfc_deactivate();
continue;
}
FURI_LOG_D(TAG, "Select PPSE response received. Start parsing response");
if(emv_decode_ppse_response(rx_buff, *rx_len, &emv_app)) {
FURI_LOG_D(TAG, "Select PPSE responce parced");
// Notify caller and exit
result->emv_data.aid_len = emv_app.aid_len;
memcpy(result->emv_data.aid, emv_app.aid, emv_app.aid_len);
if(nfc_worker->callback) {
nfc_worker->callback(nfc_worker->context);
}
break;
} else {
FURI_LOG_D(TAG, "Can't find pay application");
furi_hal_nfc_deactivate();
continue;
}
} else {
// Can't find EMV card
FURI_LOG_W(TAG, "Card doesn't support EMV");
furi_hal_nfc_deactivate();
}
} else {
// Can't find EMV card
FURI_LOG_D(TAG, "Can't find any cards");
furi_hal_nfc_deactivate();
}
osDelay(20);
}
}
void nfc_worker_read_emv(NfcWorker* nfc_worker) {
ReturnCode err;
rfalNfcDevice* dev_list;
EmvApplication emv_app = {};
uint8_t dev_cnt = 0;
uint8_t tx_buff[255] = {};
uint16_t tx_len = 0;
uint8_t* rx_buff;
uint16_t* rx_len;
NfcDeviceData* result = nfc_worker->dev_data;
while(nfc_worker->state == NfcWorkerStateReadEMV) {
memset(&emv_app, 0, sizeof(emv_app));
if(furi_hal_nfc_detect(&dev_list, &dev_cnt, 1000, false)) {
// Card was found. Check that it supports EMV
if(dev_list[0].rfInterface == RFAL_NFC_INTERFACE_ISODEP) {
result->nfc_data.uid_len = dev_list[0].dev.nfca.nfcId1Len;
result->nfc_data.atqa[0] = dev_list[0].dev.nfca.sensRes.anticollisionInfo;
result->nfc_data.atqa[1] = dev_list[0].dev.nfca.sensRes.platformInfo;
result->nfc_data.sak = dev_list[0].dev.nfca.selRes.sak;
memcpy(
result->nfc_data.uid, dev_list[0].dev.nfca.nfcId1, result->nfc_data.uid_len);
result->nfc_data.protocol = NfcDeviceProtocolEMV;
FURI_LOG_D(TAG, "Send select PPSE command");
tx_len = emv_prepare_select_ppse(tx_buff);
err = furi_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
if(err != ERR_NONE) {
FURI_LOG_D(TAG, "Error during selection PPSE request: %d", err);
furi_hal_nfc_deactivate();
continue;
}
FURI_LOG_D(TAG, "Select PPSE response received. Start parsing response");
if(emv_decode_ppse_response(rx_buff, *rx_len, &emv_app)) {
FURI_LOG_D(TAG, "Select PPSE responce parced");
result->emv_data.aid_len = emv_app.aid_len;
memcpy(result->emv_data.aid, emv_app.aid, emv_app.aid_len);
} else {
FURI_LOG_D(TAG, "Can't find pay application");
furi_hal_nfc_deactivate();
continue;
}
FURI_LOG_D(TAG, "Starting application ...");
tx_len = emv_prepare_select_app(tx_buff, &emv_app);
err = furi_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
if(err != ERR_NONE) {
FURI_LOG_D(TAG, "Error during application selection request: %d", err);
furi_hal_nfc_deactivate();
continue;
}
FURI_LOG_D(TAG, "Select application response received. Start parsing response");
if(emv_decode_select_app_response(rx_buff, *rx_len, &emv_app)) {
FURI_LOG_D(TAG, "Card name: %s", emv_app.name);
memcpy(result->emv_data.name, emv_app.name, sizeof(emv_app.name));
} else if(emv_app.pdol.size > 0) {
FURI_LOG_D(TAG, "Can't find card name, but PDOL is present.");
} else {
FURI_LOG_D(TAG, "Can't find card name or PDOL");
furi_hal_nfc_deactivate();
continue;
}
FURI_LOG_D(TAG, "Starting Get Processing Options command ...");
tx_len = emv_prepare_get_proc_opt(tx_buff, &emv_app);
err = furi_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
if(err != ERR_NONE) {
FURI_LOG_D(TAG, "Error during Get Processing Options command: %d", err);
furi_hal_nfc_deactivate();
continue;
}
if(emv_decode_get_proc_opt(rx_buff, *rx_len, &emv_app)) {
FURI_LOG_D(TAG, "Card number parsed");
result->emv_data.number_len = emv_app.card_number_len;
memcpy(result->emv_data.number, emv_app.card_number, emv_app.card_number_len);
// Notify caller and exit
if(nfc_worker->callback) {
nfc_worker->callback(nfc_worker->context);
}
break;
} else {
// Mastercard doesn't give PAN / card number as GPO response
// Iterate over all files found in application
bool pan_found = false;
for(uint8_t i = 0; (i < emv_app.afl.size) && !pan_found; i += 4) {
uint8_t sfi = emv_app.afl.data[i] >> 3;
uint8_t record_start = emv_app.afl.data[i + 1];
uint8_t record_end = emv_app.afl.data[i + 2];
// Iterate over all records in file
for(uint8_t record = record_start; record <= record_end; ++record) {
tx_len = emv_prepare_read_sfi_record(tx_buff, sfi, record);
err = furi_hal_nfc_data_exchange(
tx_buff, tx_len, &rx_buff, &rx_len, false);
if(err != ERR_NONE) {
FURI_LOG_D(
TAG,
"Error reading application sfi %d, record %d",
sfi,
record);
}
if(emv_decode_read_sfi_record(rx_buff, *rx_len, &emv_app)) {
pan_found = true;
break;
}
}
}
if(pan_found) {
FURI_LOG_D(TAG, "Card PAN found");
result->emv_data.number_len = emv_app.card_number_len;
memcpy(
result->emv_data.number,
emv_app.card_number,
result->emv_data.number_len);
if(emv_app.exp_month) {
result->emv_data.exp_mon = emv_app.exp_month;
result->emv_data.exp_year = emv_app.exp_year;
}
if(emv_app.country_code) {
result->emv_data.country_code = emv_app.country_code;
}
if(emv_app.currency_code) {
result->emv_data.currency_code = emv_app.currency_code;
}
// Notify caller and exit
if(nfc_worker->callback) {
nfc_worker->callback(nfc_worker->context);
}
break;
} else {
FURI_LOG_D(TAG, "Can't read card number");
}
furi_hal_nfc_deactivate();
}
} else {
// Can't find EMV card
FURI_LOG_W(TAG, "Card doesn't support EMV");
furi_hal_nfc_deactivate();
}
} else {
// Can't find EMV card
FURI_LOG_D(TAG, "Can't find any cards");
furi_hal_nfc_deactivate();
}
osDelay(20);
}
}
void nfc_worker_emulate_apdu(NfcWorker* nfc_worker) {
ReturnCode err;
uint8_t tx_buff[255] = {};
uint16_t tx_len = 0;
uint8_t* rx_buff;
uint16_t* rx_len;
NfcDeviceCommonData params = {
.uid = {0xCF, 0x72, 0xd4, 0x40},
.uid_len = 4,
.atqa = {0x00, 0x04},
.sak = 0x20,
.device = NfcDeviceNfca,
.protocol = NfcDeviceProtocolEMV,
};
// Test RX data
const uint8_t debug_rx[] = {
0xba, 0x0b, 0xba, 0xba, 0x20, 0x00, 0x02, 0x28, 0xde, 0xad, 0xbe, 0xef, 0x00, 0xca, 0xca,
0xca, 0xfe, 0xfa, 0xce, 0x14, 0x88, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88,
0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xba,
0x0b, 0xba, 0xba, 0x20, 0x00, 0x02, 0x28, 0xde, 0xad, 0xbe, 0xef, 0x00, 0xca, 0xca, 0xca,
0xfe, 0xfa, 0xce, 0x14, 0x88, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99,
0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xba, 0x0b,
0xba, 0xba, 0x20, 0x00, 0x02, 0x28, 0xde, 0xad, 0xbe, 0xef, 0x00, 0xca, 0xca, 0xca, 0xfe,
0xfa, 0xce, 0x14, 0x88, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa,
0xbb, 0xcc, 0xdd, 0xee, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xba, 0x0b, 0xba,
0xba, 0x20, 0x00, 0x02, 0x28, 0xde, 0xad, 0xbe, 0xef, 0x00, 0xca, 0xca, 0xca, 0xfe, 0xfa,
0xce, 0x14, 0x88, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb,
0xcc, 0xdd, 0xee, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xba, 0x0b, 0xba, 0xba,
0x20, 0x00, 0x02, 0x28, 0xde, 0xad, 0xbe, 0xef, 0x00, 0xca, 0xca, 0xca, 0xfe, 0xfa, 0xce,
0x14, 0x88, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc,
0xdd, 0xee, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xba, 0x0b, 0xba, 0xba, 0x20,
0x00, 0x02, 0x28, 0xde, 0xad, 0xbe, 0xef, 0x00, 0xca, 0xca, 0xca, 0xfe, 0xfa, 0xce, 0x14,
0x88, 0x00};
// Test TX data
const uint8_t debug_tx[] = {
0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xff, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32,
0x10, 0x14, 0x88, 0x02, 0x28, 0x00, 0x00, 0xca, 0xca, 0x00, 0xc0, 0xc0, 0x00, 0xde, 0xad,
0xbe, 0xef, 0xce, 0xee, 0xec, 0xca, 0xfe, 0xba, 0xba, 0xb0, 0xb0, 0xac, 0xdc, 0x11, 0x12,
0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xff, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10,
0x14, 0x88, 0x02, 0x28, 0x00, 0x00, 0xca, 0xca, 0x00, 0xc0, 0xc0, 0x00, 0xde, 0xad, 0xbe,
0xef, 0xce, 0xee, 0xec, 0xca, 0xfe, 0xba, 0xba, 0xb0, 0xb0, 0xac, 0xdc, 0x11, 0x12, 0x34,
0x56, 0x78, 0x9a, 0xbc, 0xde, 0xff, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0x14,
0x88, 0x02, 0x28, 0x00, 0x00, 0xca, 0xca, 0x00, 0xc0, 0xc0, 0x00, 0xde, 0xad, 0xbe, 0xef,
0xce, 0xee, 0xec, 0xca, 0xfe, 0xba, 0xba, 0xb0, 0xb0, 0xac, 0xdc, 0x11, 0x12, 0x34, 0x56,
0x78, 0x9a, 0xbc, 0xde, 0xff, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0x14, 0x88,
0x02, 0x28, 0x00, 0x00, 0xca, 0xca, 0x00, 0xc0, 0xc0, 0x00, 0xde, 0xad, 0xbe, 0xef, 0xce,
0xee, 0xec, 0xca, 0xfe, 0xba, 0xba, 0xb0, 0xb0, 0xac, 0xdc, 0x11, 0x12, 0x34, 0x56, 0x78,
0x9a, 0xbc, 0xde, 0xff, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0x14, 0x88, 0x02,
0x28, 0x00, 0x00, 0xca, 0xca, 0x00, 0xc0, 0xc0, 0x00, 0xde, 0xad, 0xbe, 0xef, 0xce, 0xee,
0xec, 0xca, 0xfe, 0xba, 0xba, 0xb0, 0xb0, 0xac, 0xdc, 0x11, 0x12, 0x34, 0x56, 0x78, 0x9a,
0xbc, 0xde, 0xff, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0x14, 0x88, 0x02, 0x28,
0x00, 0x00};
while(nfc_worker->state == NfcWorkerStateEmulateApdu) {
if(furi_hal_nfc_listen(params.uid, params.uid_len, params.atqa, params.sak, false, 300)) {
FURI_LOG_D(TAG, "POS terminal detected");
// Read data from POS terminal
err = furi_hal_nfc_data_exchange(NULL, 0, &rx_buff, &rx_len, false);
if(err == ERR_NONE) {
FURI_LOG_D(TAG, "Received Select PPSE");
} else {
FURI_LOG_D(TAG, "Error in 1st data exchange: select PPSE");
furi_hal_nfc_deactivate();
continue;
}
FURI_LOG_D(TAG, "Transive SELECT PPSE ANS");
tx_len = emv_select_ppse_ans(tx_buff);
err = furi_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
if(err == ERR_NONE) {
FURI_LOG_D(TAG, "Received Select APP");
} else {
FURI_LOG_D(TAG, "Error in 2nd data exchange: select APP");
furi_hal_nfc_deactivate();
continue;
}
FURI_LOG_D(TAG, "Transive SELECT APP ANS");
tx_len = emv_select_app_ans(tx_buff);
err = furi_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
if(err == ERR_NONE) {
FURI_LOG_D(TAG, "Received PDOL");
} else {
FURI_LOG_D(TAG, "Error in 3rd data exchange: receive PDOL");
furi_hal_nfc_deactivate();
continue;
}
FURI_LOG_D(TAG, "Transive PDOL ANS");
tx_len = emv_get_proc_opt_ans(tx_buff);
err = furi_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
if(err == ERR_NONE) {
FURI_LOG_D(TAG, "Transive PDOL ANS");
} else {
FURI_LOG_D(TAG, "Error in 4rd data exchange: Transive PDOL ANS");
furi_hal_nfc_deactivate();
continue;
}
if(*rx_len != sizeof(debug_rx) || memcmp(rx_buff, debug_rx, sizeof(debug_rx))) {
FURI_LOG_D(TAG, "Failed long message test");
} else {
FURI_LOG_D(TAG, "Correct debug message received");
tx_len = sizeof(debug_tx);
err = furi_hal_nfc_data_exchange(
(uint8_t*)debug_tx, tx_len, &rx_buff, &rx_len, false);
if(err == ERR_NONE) {
FURI_LOG_D(TAG, "Transive Debug message");
}
}
furi_hal_nfc_deactivate();
} else {
FURI_LOG_D(TAG, "Can't find reader");
}
osDelay(20);
}
}
void nfc_worker_read_mifare_ul(NfcWorker* nfc_worker) {
ReturnCode err;
rfalNfcDevice* dev_list;
uint8_t dev_cnt = 0;
uint8_t tx_buff[255] = {};
uint16_t tx_len = 0;
uint8_t* rx_buff;
uint16_t* rx_len;
MifareUlDevice mf_ul_read;
NfcDeviceData* result = nfc_worker->dev_data;
while(nfc_worker->state == NfcWorkerStateReadMifareUl) {
furi_hal_nfc_deactivate();
memset(&mf_ul_read, 0, sizeof(mf_ul_read));
if(furi_hal_nfc_detect(&dev_list, &dev_cnt, 300, false)) {
if(dev_list[0].type == RFAL_NFC_LISTEN_TYPE_NFCA &&
mf_ul_check_card_type(
dev_list[0].dev.nfca.sensRes.anticollisionInfo,
dev_list[0].dev.nfca.sensRes.platformInfo,
dev_list[0].dev.nfca.selRes.sak)) {
// Get Mifare Ultralight version
FURI_LOG_D(TAG, "Found Mifare Ultralight tag. Reading tag version");
tx_len = mf_ul_prepare_get_version(tx_buff);
err = furi_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
if(err == ERR_NONE) {
mf_ul_parse_get_version_response(rx_buff, &mf_ul_read);
FURI_LOG_D(
TAG,
"Mifare Ultralight Type: %d, Pages: %d",
mf_ul_read.data.type,
mf_ul_read.pages_to_read);
FURI_LOG_D(TAG, "Reading signature ...");
tx_len = mf_ul_prepare_read_signature(tx_buff);
if(furi_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false)) {
FURI_LOG_D(TAG, "Failed reading signature");
memset(mf_ul_read.data.signature, 0, sizeof(mf_ul_read.data.signature));
} else {
mf_ul_parse_read_signature_response(rx_buff, &mf_ul_read);
}
} else if(err == ERR_TIMEOUT) {
FURI_LOG_D(
TAG,
"Card doesn't respond to GET VERSION command. Setting default read parameters");
err = ERR_NONE;
mf_ul_set_default_version(&mf_ul_read);
// Reinit device
furi_hal_nfc_deactivate();
if(!furi_hal_nfc_detect(&dev_list, &dev_cnt, 300, false)) {
FURI_LOG_D(TAG, "Lost connection. Restarting search");
continue;
}
} else {
FURI_LOG_D(
TAG, "Error getting Mifare Ultralight version. Error code: %d", err);
continue;
}
if(mf_ul_read.support_fast_read) {
FURI_LOG_D(TAG, "Reading pages ...");
tx_len = mf_ul_prepare_fast_read(tx_buff, 0x00, mf_ul_read.pages_to_read - 1);
if(furi_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false)) {
FURI_LOG_D(TAG, "Failed reading pages");
continue;
} else {
mf_ul_parse_fast_read_response(
rx_buff, 0x00, mf_ul_read.pages_to_read - 1, &mf_ul_read);
}
FURI_LOG_D(TAG, "Reading 3 counters ...");
for(uint8_t i = 0; i < 3; i++) {
tx_len = mf_ul_prepare_read_cnt(tx_buff, i);
if(furi_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false)) {
FURI_LOG_W(TAG, "Failed reading Counter %d", i);
mf_ul_read.data.counter[i] = 0;
} else {
mf_ul_parse_read_cnt_response(rx_buff, i, &mf_ul_read);
}
}
FURI_LOG_D(TAG, "Checking tearing flags ...");
for(uint8_t i = 0; i < 3; i++) {
tx_len = mf_ul_prepare_check_tearing(tx_buff, i);
if(furi_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false)) {
FURI_LOG_D(TAG, "Error checking tearing flag %d", i);
mf_ul_read.data.tearing[i] = MF_UL_TEARING_FLAG_DEFAULT;
} else {
mf_ul_parse_check_tearing_response(rx_buff, i, &mf_ul_read);
}
}
} else {
// READ card with READ command (4 pages at a time)
for(uint8_t page = 0; page < mf_ul_read.pages_to_read; page += 4) {
FURI_LOG_D(TAG, "Reading pages %d - %d ...", page, page + 3);
tx_len = mf_ul_prepare_read(tx_buff, page);
if(furi_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false)) {
FURI_LOG_D(TAG, "Read pages %d - %d failed", page, page + 3);
continue;
} else {
mf_ul_parse_read_response(rx_buff, page, &mf_ul_read);
}
}
}
// Fill result data
result->nfc_data.uid_len = dev_list[0].dev.nfca.nfcId1Len;
result->nfc_data.atqa[0] = dev_list[0].dev.nfca.sensRes.anticollisionInfo;
result->nfc_data.atqa[1] = dev_list[0].dev.nfca.sensRes.platformInfo;
result->nfc_data.sak = dev_list[0].dev.nfca.selRes.sak;
result->nfc_data.protocol = NfcDeviceProtocolMifareUl;
memcpy(
result->nfc_data.uid, dev_list[0].dev.nfca.nfcId1, result->nfc_data.uid_len);
result->mf_ul_data = mf_ul_read.data;
// Notify caller and exit
if(nfc_worker->callback) {
nfc_worker->callback(nfc_worker->context);
}
break;
} else {
FURI_LOG_W(TAG, "Tag does not support Mifare Ultralight");
}
} else {
FURI_LOG_D(TAG, "Can't find any tags");
}
osDelay(100);
}
}
void nfc_worker_emulate_mifare_ul(NfcWorker* nfc_worker) {
ReturnCode err;
uint8_t tx_buff[255] = {};
uint16_t tx_len = 0;
uint8_t* rx_buff;
uint16_t* rx_len;
NfcDeviceData* data = nfc_worker->dev_data;
MifareUlDevice mf_ul_emulate;
// Setup emulation parameters from mifare ultralight data structure
mf_ul_prepare_emulation(&mf_ul_emulate, &data->mf_ul_data);
while(nfc_worker->state == NfcWorkerStateEmulateMifareUl) {
// WARNING
// DO NOT call any blocking functions (e.g. FURI_LOG_*) in this loop,
// as any delay will negatively affect the stability of the emulation.
if(furi_hal_nfc_listen(
data->nfc_data.uid,
data->nfc_data.uid_len,
data->nfc_data.atqa,
data->nfc_data.sak,
true,
200)) {
if(furi_hal_nfc_get_first_frame(&rx_buff, &rx_len)) {
// Data exchange loop
while(nfc_worker->state == NfcWorkerStateEmulateMifareUl) {
tx_len = mf_ul_prepare_emulation_response(
rx_buff, *rx_len, tx_buff, &mf_ul_emulate);
if(tx_len > 0) {
if(tx_len < 8) {
err = furi_hal_nfc_raw_bitstream_exchange(
tx_buff, tx_len, &rx_buff, &rx_len, false);
*rx_len /= 8;
} else {
err = furi_hal_nfc_data_exchange(
tx_buff, tx_len / 8, &rx_buff, &rx_len, false);
}
if(err == ERR_NONE) {
continue;
} else {
FURI_LOG_D(TAG, "Communication error: %d", err);
break;
}
} else {
furi_hal_nfc_deactivate();
break;
}
}
} else {
FURI_LOG_D(TAG, "Error in 1st data exchange");
furi_hal_nfc_deactivate();
}
}
// Check if data was modified
if(mf_ul_emulate.data_changed) {
nfc_worker->dev_data->mf_ul_data = mf_ul_emulate.data;
if(nfc_worker->callback) {
nfc_worker->callback(nfc_worker->context);
}
}
FURI_LOG_D(TAG, "Can't find reader");
osThreadYield();
}
}
void nfc_worker_field(NfcWorker* nfc_worker) {
furi_hal_nfc_field_on();
while(nfc_worker->state == NfcWorkerStateField) {
osDelay(50);
}
furi_hal_nfc_field_off();
}
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