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[FL-2198], [FL-2161] NFC emulation refactoring (#968)

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* rfal: add state changed callback
* furi_hal_nfc: add NFC-A emulation API
* nfc: add emulation logger, refactor scenes
* elements: fix text_box element
* gui: fix text box module
* nfc: remove unnecessary buffers
* nfc: introduce emulation callback concept
* nfc: format sources
* bt settings: fix incorrect scene switch
* bt settings: format sources
* Debug: fix x2d import for python 3
* Gui: rename method name widget_clear to widget_reset
* nfc: add nfca emulation handler
* nfc: add global custom events enum
* nfc: UID emulation Data -> Log
* furi_hal_nfc: fix incorrect timings
* u2f, badusb: widget_clear() -> widget_reset()

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
This commit is contained in:
gornekich
2022-02-02 22:59:28 +03:00
committed by GitHub
parent 838df4c9ea
commit 8cfd0eab9e
46 changed files with 719 additions and 251 deletions
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95
applications/nfc/nfc_worker.c
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@@ -57,7 +57,7 @@ void nfc_worker_stop(NfcWorker* nfc_worker) {
if(nfc_worker->state == NfcWorkerStateBroken || nfc_worker->state == NfcWorkerStateReady) {
return;
}
furi_hal_nfc_stop();
nfc_worker_change_state(nfc_worker, NfcWorkerStateStop);
}
@@ -140,13 +140,37 @@ void nfc_worker_detect(NfcWorker* nfc_worker) {
}
}
bool nfc_worker_emulate_uid_callback(
uint8_t* buff_rx,
uint16_t buff_rx_len,
uint8_t* buff_tx,
uint16_t* buff_tx_len,
uint32_t* data_type,
void* context) {
furi_assert(context);
NfcWorker* nfc_worker = context;
NfcReaderRequestData* reader_data = &nfc_worker->dev_data->reader_data;
reader_data->size = buff_rx_len / 8;
if(reader_data->size > 0) {
memcpy(reader_data->data, buff_rx, reader_data->size);
if(nfc_worker->callback) {
nfc_worker->callback(nfc_worker->context);
}
}
return true;
}
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);
furi_hal_nfc_emulate_nfca(
data->uid,
data->uid_len,
data->atqa,
data->sak,
nfc_worker_emulate_uid_callback,
nfc_worker,
1000);
}
}
@@ -603,65 +627,26 @@ void nfc_worker_read_mifare_ul(NfcWorker* nfc_worker) {
}
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;
NfcDeviceCommonData* nfc_common = &nfc_worker->dev_data->nfc_data;
MifareUlDevice mf_ul_emulate;
// Setup emulation parameters from mifare ultralight data structure
mf_ul_prepare_emulation(&mf_ul_emulate, &data->mf_ul_data);
mf_ul_prepare_emulation(&mf_ul_emulate, &nfc_worker->dev_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();
}
}
furi_hal_nfc_emulate_nfca(
nfc_common->uid,
nfc_common->uid_len,
nfc_common->atqa,
nfc_common->sak,
mf_ul_prepare_emulation_response,
&mf_ul_emulate,
5000);
// 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);
}
mf_ul_emulate.data_changed = false;
}
FURI_LOG_D(TAG, "Can't find reader");
osThreadYield();
}
}