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a6242e8ca3
unleashed-firmware/applications/nfc/nfc_worker.c
Yukai Li 556af0b82b
nfc: NTAG21x complete emulation (#1313) 
* nfc: Refactor Mifare Ultralight feature flags
  Unify them in both reader and emulator to make handling easier
* nfc: Refactor MFUL PWD_AUTH and add AUTHLIM counter
* nfc: Add MFUL EV1 VCSL command emulation
* nfc: Enforce message size check in MFUL emulation
  Also fix READ_CNT byte order, but it's not fully working
* nfc: Add MFUL auth counter serialization
  Also fill counter on successful read from tag
* nfc: Fix MFUL INCR_CNT emulation
* nfc: Fix MFUL READ_CNT emulation
* nfc: Refactor MFUL emulation and implement full write support
* nfc: Fix Mifare Ultralight serialization
* nfc: Add MFUL OTP/CC handling
* nfc: Make sure MF0UL21 dynamic lock byte 3 also reads 0xBD
* nfc: Small MFUL refactor and fix CFGLCK behavior
* WIP: nfc: MFUL read support with ASCII mirror and auth roll-over
  This is too complex and I don't like it
* nfc: Simplify MFUL read emulation, fix mirror range check
* nfc: Implement MFUL auth and ASCII mirror for FAST_READ
* nfc: Fix MFUL read roll-over with AUTH0 set
* nfc: Implement MFUL read counter increment
* nfc: Align ASCII mirror to NTAG21x behavior
* nfc: Handle invalid command in MFUL emulation
* nfc: Fix MFUL static lock check
* nfc: Refactor MFUL emulation to use cached config pages
* nfc: Refactor MFUL auth counter to count up instead of down
* nfc: Add missing NULL check
* WIP: nfc: Various MFUL emulation behavior tweaks
* WIP: nfc: More MFUL emulation behavior adjustments
* nfc: Match AUTHLIM emulation to NTAG21x behavior
* nfc: Fix MFUL dynamic lock emulation
* nfc: Fix typo in MFUL read counters
* nfc: Fix typo in MFUL FAST_READ emulation
* nfc: Increase emulation TX buffer size
  Enough space for if someone requests FAST_READ of all pages of an NTAG
* nfc: Fix MFUL negative verification counter overflow
* nfc: Change auth counter kv name
* nfc: Fix NTAG I2C FAST_READ emulation
* nfc: Fix NTAG21x config reload behavior

Co-authored-by: あく <alleteam@gmail.com>
2022-06-22 00:04:35 +09:00

703 lines
29 KiB
C
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#include "nfc_worker_i.h"
#include <furi_hal.h>
#define TAG "NfcWorker"
/***************************** NFC Worker API *******************************/
NfcWorker* nfc_worker_alloc() {
NfcWorker* nfc_worker = malloc(sizeof(NfcWorker));
// Worker thread attributes
nfc_worker->thread = furi_thread_alloc();
furi_thread_set_name(nfc_worker->thread, "NfcWorker");
furi_thread_set_stack_size(nfc_worker->thread, 8192);
furi_thread_set_callback(nfc_worker->thread, nfc_worker_task);
furi_thread_set_context(nfc_worker->thread, nfc_worker);
nfc_worker->callback = NULL;
nfc_worker->context = NULL;
nfc_worker->storage = furi_record_open("storage");
// Initialize rfal
while(furi_hal_nfc_is_busy()) {
osDelay(10);
}
nfc_worker_change_state(nfc_worker, NfcWorkerStateReady);
if(furi_hal_rtc_is_flag_set(FuriHalRtcFlagDebug)) {
nfc_worker->debug_pcap_worker = nfc_debug_pcap_alloc(nfc_worker->storage);
}
return nfc_worker;
}
void nfc_worker_free(NfcWorker* nfc_worker) {
furi_assert(nfc_worker);
furi_thread_free(nfc_worker->thread);
furi_record_close("storage");
if(nfc_worker->debug_pcap_worker) nfc_debug_pcap_free(nfc_worker->debug_pcap_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(furi_hal_nfc_is_busy()) {
osDelay(10);
}
nfc_worker->callback = callback;
nfc_worker->context = context;
nfc_worker->dev_data = dev_data;
nfc_worker_change_state(nfc_worker, state);
furi_thread_start(nfc_worker->thread);
}
void nfc_worker_stop(NfcWorker* nfc_worker) {
furi_assert(nfc_worker);
if(nfc_worker->state == NfcWorkerStateBroken || nfc_worker->state == NfcWorkerStateReady) {
return;
}
furi_hal_nfc_stop();
nfc_worker_change_state(nfc_worker, NfcWorkerStateStop);
furi_thread_join(nfc_worker->thread);
}
void nfc_worker_change_state(NfcWorker* nfc_worker, NfcWorkerState state) {
nfc_worker->state = state;
}
/***************************** NFC Worker Thread *******************************/
int32_t nfc_worker_task(void* context) {
NfcWorker* nfc_worker = context;
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 == NfcWorkerStateReadEMVData) {
nfc_worker_read_emv(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateEmulateApdu) {
nfc_worker_emulate_apdu(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateReadMifareUltralight) {
nfc_worker_read_mifare_ultralight(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateEmulateMifareUltralight) {
nfc_worker_emulate_mifare_ul(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateReadMifareClassic) {
nfc_worker_mifare_classic_dict_attack(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateEmulateMifareClassic) {
nfc_worker_emulate_mifare_classic(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateReadMifareDesfire) {
nfc_worker_read_mifare_desfire(nfc_worker);
}
furi_hal_nfc_sleep();
nfc_worker_change_state(nfc_worker, NfcWorkerStateReady);
return 0;
}
void nfc_worker_detect(NfcWorker* nfc_worker) {
nfc_device_data_clear(nfc_worker->dev_data);
NfcDeviceData* dev_data = nfc_worker->dev_data;
FuriHalNfcDevData* nfc_data = &nfc_worker->dev_data->nfc_data;
while(nfc_worker->state == NfcWorkerStateDetect) {
if(furi_hal_nfc_detect(nfc_data, 1000)) {
// Process first found device
if(nfc_data->type == FuriHalNfcTypeA) {
if(mf_ul_check_card_type(nfc_data->atqa[0], nfc_data->atqa[1], nfc_data->sak)) {
dev_data->protocol = NfcDeviceProtocolMifareUl;
} else if(mf_classic_check_card_type(
nfc_data->atqa[0], nfc_data->atqa[1], nfc_data->sak)) {
dev_data->protocol = NfcDeviceProtocolMifareClassic;
} else if(mf_df_check_card_type(
nfc_data->atqa[0], nfc_data->atqa[1], nfc_data->sak)) {
dev_data->protocol = NfcDeviceProtocolMifareDesfire;
} else if(nfc_data->interface == FuriHalNfcInterfaceIsoDep) {
dev_data->protocol = NfcDeviceProtocolEMV;
} else {
dev_data->protocol = NfcDeviceProtocolUnknown;
}
}
// Notify caller and exit
if(nfc_worker->callback) {
nfc_worker->callback(NfcWorkerEventSuccess, nfc_worker->context);
}
break;
}
furi_hal_nfc_sleep();
osDelay(100);
}
}
void nfc_worker_emulate(NfcWorker* nfc_worker) {
FuriHalNfcTxRxContext tx_rx = {};
nfc_debug_pcap_prepare_tx_rx(nfc_worker->debug_pcap_worker, &tx_rx, true);
FuriHalNfcDevData* data = &nfc_worker->dev_data->nfc_data;
NfcReaderRequestData* reader_data = &nfc_worker->dev_data->reader_data;
while(nfc_worker->state == NfcWorkerStateEmulate) {
if(furi_hal_nfc_listen(data->uid, data->uid_len, data->atqa, data->sak, true, 100)) {
if(furi_hal_nfc_tx_rx(&tx_rx, 100)) {
reader_data->size = tx_rx.rx_bits / 8;
if(reader_data->size > 0) {
memcpy(reader_data->data, tx_rx.rx_data, reader_data->size);
if(nfc_worker->callback) {
nfc_worker->callback(NfcWorkerEventSuccess, nfc_worker->context);
}
}
} else {
FURI_LOG_E(TAG, "Failed to get reader commands");
}
}
}
}
void nfc_worker_read_emv_app(NfcWorker* nfc_worker) {
FuriHalNfcTxRxContext tx_rx = {};
nfc_debug_pcap_prepare_tx_rx(nfc_worker->debug_pcap_worker, &tx_rx, false);
EmvApplication emv_app = {};
NfcDeviceData* result = nfc_worker->dev_data;
FuriHalNfcDevData* nfc_data = &nfc_worker->dev_data->nfc_data;
nfc_device_data_clear(result);
while(nfc_worker->state == NfcWorkerStateReadEMVApp) {
if(furi_hal_nfc_detect(nfc_data, 1000)) {
// Card was found. Check that it supports EMV
if(nfc_data->interface == FuriHalNfcInterfaceIsoDep) {
result->protocol = NfcDeviceProtocolEMV;
if(emv_search_application(&tx_rx, &emv_app)) {
// 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(NfcWorkerEventSuccess, nfc_worker->context);
}
}
} else {
FURI_LOG_W(TAG, "Card doesn't support EMV");
}
} else {
FURI_LOG_D(TAG, "Can't find any cards");
}
furi_hal_nfc_sleep();
osDelay(20);
}
}
void nfc_worker_read_emv(NfcWorker* nfc_worker) {
FuriHalNfcTxRxContext tx_rx = {};
nfc_debug_pcap_prepare_tx_rx(nfc_worker->debug_pcap_worker, &tx_rx, false);
EmvApplication emv_app = {};
NfcDeviceData* result = nfc_worker->dev_data;
FuriHalNfcDevData* nfc_data = &nfc_worker->dev_data->nfc_data;
nfc_device_data_clear(result);
while(nfc_worker->state == NfcWorkerStateReadEMVData) {
if(furi_hal_nfc_detect(nfc_data, 1000)) {
// Card was found. Check that it supports EMV
if(nfc_data->interface == FuriHalNfcInterfaceIsoDep) {
result->protocol = NfcDeviceProtocolEMV;
if(emv_read_bank_card(&tx_rx, &emv_app)) {
result->emv_data.number_len = emv_app.card_number_len;
memcpy(
result->emv_data.number, emv_app.card_number, result->emv_data.number_len);
result->emv_data.aid_len = emv_app.aid_len;
memcpy(result->emv_data.aid, emv_app.aid, emv_app.aid_len);
if(emv_app.name_found) {
memcpy(result->emv_data.name, emv_app.name, sizeof(emv_app.name));
}
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(NfcWorkerEventSuccess, nfc_worker->context);
}
break;
}
} else {
FURI_LOG_W(TAG, "Card doesn't support EMV");
}
} else {
FURI_LOG_D(TAG, "Can't find any cards");
}
furi_hal_nfc_sleep();
osDelay(20);
}
}
void nfc_worker_emulate_apdu(NfcWorker* nfc_worker) {
FuriHalNfcTxRxContext tx_rx = {};
nfc_debug_pcap_prepare_tx_rx(nfc_worker->debug_pcap_worker, &tx_rx, true);
FuriHalNfcDevData params = {
.uid = {0xCF, 0x72, 0xd4, 0x40},
.uid_len = 4,
.atqa = {0x00, 0x04},
.sak = 0x20,
.type = FuriHalNfcTypeA,
};
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");
if(emv_card_emulation(&tx_rx)) {
FURI_LOG_D(TAG, "EMV card emulated");
}
} else {
FURI_LOG_D(TAG, "Can't find reader");
}
furi_hal_nfc_sleep();
osDelay(20);
}
}
void nfc_worker_read_mifare_ultralight(NfcWorker* nfc_worker) {
FuriHalNfcTxRxContext tx_rx = {};
nfc_debug_pcap_prepare_tx_rx(nfc_worker->debug_pcap_worker, &tx_rx, false);
MfUltralightReader reader = {};
MfUltralightData data = {};
NfcDeviceData* result = nfc_worker->dev_data;
FuriHalNfcDevData* nfc_data = &nfc_worker->dev_data->nfc_data;
while(nfc_worker->state == NfcWorkerStateReadMifareUltralight) {
if(furi_hal_nfc_detect(nfc_data, 300)) {
if(nfc_data->type == FuriHalNfcTypeA &&
mf_ul_check_card_type(nfc_data->atqa[0], nfc_data->atqa[1], nfc_data->sak)) {
FURI_LOG_D(TAG, "Found Mifare Ultralight tag. Start reading");
if(mf_ul_read_card(&tx_rx, &reader, &data)) {
result->protocol = NfcDeviceProtocolMifareUl;
result->mf_ul_data = data;
// Notify caller and exit
if(nfc_worker->callback) {
nfc_worker->callback(NfcWorkerEventSuccess, nfc_worker->context);
}
break;
} else {
FURI_LOG_D(TAG, "Failed reading Mifare Ultralight");
}
} else {
FURI_LOG_W(TAG, "Tag is not Mifare Ultralight");
}
} else {
FURI_LOG_D(TAG, "Can't find any tags");
}
furi_hal_nfc_sleep();
osDelay(100);
}
}
void nfc_worker_emulate_mifare_ul(NfcWorker* nfc_worker) {
FuriHalNfcDevData* nfc_data = &nfc_worker->dev_data->nfc_data;
MfUltralightEmulator emulator = {};
mf_ul_prepare_emulation(&emulator, &nfc_worker->dev_data->mf_ul_data);
while(nfc_worker->state == NfcWorkerStateEmulateMifareUltralight) {
mf_ul_reset_emulation(&emulator, true);
furi_hal_nfc_emulate_nfca(
nfc_data->uid,
nfc_data->uid_len,
nfc_data->atqa,
nfc_data->sak,
mf_ul_prepare_emulation_response,
&emulator,
5000);
// Check if data was modified
if(emulator.data_changed) {
nfc_worker->dev_data->mf_ul_data = emulator.data;
if(nfc_worker->callback) {
nfc_worker->callback(NfcWorkerEventSuccess, nfc_worker->context);
}
emulator.data_changed = false;
}
}
}
void nfc_worker_mifare_classic_dict_attack(NfcWorker* nfc_worker) {
furi_assert(nfc_worker->callback);
FuriHalNfcTxRxContext tx_rx_ctx = {};
nfc_debug_pcap_prepare_tx_rx(nfc_worker->debug_pcap_worker, &tx_rx_ctx, false);
MfClassicAuthContext auth_ctx = {};
MfClassicReader reader = {};
uint64_t curr_key = 0;
uint16_t curr_sector = 0;
uint8_t total_sectors = 0;
NfcWorkerEvent event;
FuriHalNfcDevData* nfc_data = &nfc_worker->dev_data->nfc_data;
// Open dictionary
nfc_worker->dict_stream = file_stream_alloc(nfc_worker->storage);
if(!nfc_mf_classic_dict_open_file(nfc_worker->dict_stream)) {
event = NfcWorkerEventNoDictFound;
nfc_worker->callback(event, nfc_worker->context);
nfc_mf_classic_dict_close_file(nfc_worker->dict_stream);
stream_free(nfc_worker->dict_stream);
return;
}
// Detect Mifare Classic card
while(nfc_worker->state == NfcWorkerStateReadMifareClassic) {
if(furi_hal_nfc_detect(nfc_data, 300)) {
if(mf_classic_get_type(
nfc_data->uid,
nfc_data->uid_len,
nfc_data->atqa[0],
nfc_data->atqa[1],
nfc_data->sak,
&reader)) {
total_sectors = mf_classic_get_total_sectors_num(&reader);
if(reader.type == MfClassicType1k) {
event = NfcWorkerEventDetectedClassic1k;
} else {
event = NfcWorkerEventDetectedClassic4k;
}
nfc_worker->callback(event, nfc_worker->context);
break;
}
} else {
event = NfcWorkerEventNoCardDetected;
nfc_worker->callback(event, nfc_worker->context);
}
}
if(nfc_worker->state == NfcWorkerStateReadMifareClassic) {
bool card_removed_notified = false;
bool card_found_notified = false;
// Seek for mifare classic keys
for(curr_sector = 0; curr_sector < total_sectors; curr_sector++) {
FURI_LOG_I(TAG, "Sector: %d ...", curr_sector);
event = NfcWorkerEventNewSector;
nfc_worker->callback(event, nfc_worker->context);
mf_classic_auth_init_context(&auth_ctx, reader.cuid, curr_sector);
bool sector_key_found = false;
while(nfc_mf_classic_dict_get_next_key(nfc_worker->dict_stream, &curr_key)) {
furi_hal_nfc_sleep();
if(furi_hal_nfc_activate_nfca(300, &reader.cuid)) {
if(!card_found_notified) {
if(reader.type == MfClassicType1k) {
event = NfcWorkerEventDetectedClassic1k;
} else {
event = NfcWorkerEventDetectedClassic4k;
}
nfc_worker->callback(event, nfc_worker->context);
card_found_notified = true;
card_removed_notified = false;
}
FURI_LOG_D(
TAG,
"Try to auth to sector %d with key %04lx%08lx",
curr_sector,
(uint32_t)(curr_key >> 32),
(uint32_t)curr_key);
if(mf_classic_auth_attempt(&tx_rx_ctx, &auth_ctx, curr_key)) {
sector_key_found = true;
if((auth_ctx.key_a != MF_CLASSIC_NO_KEY) &&
(auth_ctx.key_b != MF_CLASSIC_NO_KEY))
break;
}
} else {
// Notify that no tag is availalble
FURI_LOG_D(TAG, "Can't find tags");
if(!card_removed_notified) {
event = NfcWorkerEventNoCardDetected;
nfc_worker->callback(event, nfc_worker->context);
card_removed_notified = true;
card_found_notified = false;
}
}
if(nfc_worker->state != NfcWorkerStateReadMifareClassic) break;
osDelay(1);
}
if(nfc_worker->state != NfcWorkerStateReadMifareClassic) break;
if(sector_key_found) {
// Notify that keys were found
if(auth_ctx.key_a != MF_CLASSIC_NO_KEY) {
FURI_LOG_I(
TAG,
"Sector %d key A: %04lx%08lx",
curr_sector,
(uint32_t)(auth_ctx.key_a >> 32),
(uint32_t)auth_ctx.key_a);
event = NfcWorkerEventFoundKeyA;
nfc_worker->callback(event, nfc_worker->context);
}
if(auth_ctx.key_b != MF_CLASSIC_NO_KEY) {
FURI_LOG_I(
TAG,
"Sector %d key B: %04lx%08lx",
curr_sector,
(uint32_t)(auth_ctx.key_b >> 32),
(uint32_t)auth_ctx.key_b);
event = NfcWorkerEventFoundKeyB;
nfc_worker->callback(event, nfc_worker->context);
}
// Add sectors to read sequence
mf_classic_reader_add_sector(&reader, curr_sector, auth_ctx.key_a, auth_ctx.key_b);
}
nfc_mf_classic_dict_reset(nfc_worker->dict_stream);
}
}
if(nfc_worker->state == NfcWorkerStateReadMifareClassic) {
FURI_LOG_I(TAG, "Found keys to %d sectors. Start reading sectors", reader.sectors_to_read);
uint8_t sectors_read =
mf_classic_read_card(&tx_rx_ctx, &reader, &nfc_worker->dev_data->mf_classic_data);
if(sectors_read) {
event = NfcWorkerEventSuccess;
nfc_worker->dev_data->protocol = NfcDeviceProtocolMifareClassic;
FURI_LOG_I(TAG, "Successfully read %d sectors", sectors_read);
} else {
event = NfcWorkerEventFail;
FURI_LOG_W(TAG, "Failed to read any sector");
}
nfc_worker->callback(event, nfc_worker->context);
}
nfc_mf_classic_dict_close_file(nfc_worker->dict_stream);
stream_free(nfc_worker->dict_stream);
}
void nfc_worker_emulate_mifare_classic(NfcWorker* nfc_worker) {
FuriHalNfcTxRxContext tx_rx = {};
nfc_debug_pcap_prepare_tx_rx(nfc_worker->debug_pcap_worker, &tx_rx, true);
FuriHalNfcDevData* nfc_data = &nfc_worker->dev_data->nfc_data;
MfClassicEmulator emulator = {
.cuid = nfc_util_bytes2num(&nfc_data->uid[nfc_data->uid_len - 4], 4),
.data = nfc_worker->dev_data->mf_classic_data,
.data_changed = false,
};
NfcaSignal* nfca_signal = nfca_signal_alloc();
tx_rx.nfca_signal = nfca_signal;
while(nfc_worker->state == NfcWorkerStateEmulateMifareClassic) {
if(furi_hal_nfc_listen(
nfc_data->uid, nfc_data->uid_len, nfc_data->atqa, nfc_data->sak, true, 300)) {
mf_classic_emulator(&emulator, &tx_rx);
}
}
if(emulator.data_changed) {
nfc_worker->dev_data->mf_classic_data = emulator.data;
if(nfc_worker->callback) {
nfc_worker->callback(NfcWorkerEventSuccess, nfc_worker->context);
}
emulator.data_changed = false;
}
nfca_signal_free(nfca_signal);
}
void nfc_worker_read_mifare_desfire(NfcWorker* nfc_worker) {
FuriHalNfcTxRxContext tx_rx = {};
nfc_debug_pcap_prepare_tx_rx(nfc_worker->debug_pcap_worker, &tx_rx, false);
NfcDeviceData* result = nfc_worker->dev_data;
nfc_device_data_clear(result);
MifareDesfireData* data = &result->mf_df_data;
FuriHalNfcDevData* nfc_data = &nfc_worker->dev_data->nfc_data;
while(nfc_worker->state == NfcWorkerStateReadMifareDesfire) {
furi_hal_nfc_sleep();
if(!furi_hal_nfc_detect(nfc_data, 300)) {
osDelay(100);
continue;
}
memset(data, 0, sizeof(MifareDesfireData));
if(nfc_data->type != FuriHalNfcTypeA ||
!mf_df_check_card_type(nfc_data->atqa[0], nfc_data->atqa[1], nfc_data->sak)) {
FURI_LOG_D(TAG, "Tag is not DESFire");
osDelay(100);
continue;
}
FURI_LOG_D(TAG, "Found DESFire tag");
result->protocol = NfcDeviceProtocolMifareDesfire;
// Get DESFire version
tx_rx.tx_bits = 8 * mf_df_prepare_get_version(tx_rx.tx_data);
if(!furi_hal_nfc_tx_rx_full(&tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange getting version");
continue;
}
if(!mf_df_parse_get_version_response(tx_rx.rx_data, tx_rx.rx_bits / 8, &data->version)) {
FURI_LOG_W(TAG, "Bad DESFire GET_VERSION response");
continue;
}
tx_rx.tx_bits = 8 * mf_df_prepare_get_free_memory(tx_rx.tx_data);
if(furi_hal_nfc_tx_rx_full(&tx_rx)) {
data->free_memory = malloc(sizeof(MifareDesfireFreeMemory));
memset(data->free_memory, 0, sizeof(MifareDesfireFreeMemory));
if(!mf_df_parse_get_free_memory_response(
tx_rx.rx_data, tx_rx.rx_bits / 8, data->free_memory)) {
FURI_LOG_D(TAG, "Bad DESFire GET_FREE_MEMORY response (normal for pre-EV1 cards)");
free(data->free_memory);
data->free_memory = NULL;
}
}
tx_rx.tx_bits = 8 * mf_df_prepare_get_key_settings(tx_rx.tx_data);
if(!furi_hal_nfc_tx_rx_full(&tx_rx)) {
FURI_LOG_D(TAG, "Bad exchange getting key settings");
} else {
data->master_key_settings = malloc(sizeof(MifareDesfireKeySettings));
memset(data->master_key_settings, 0, sizeof(MifareDesfireKeySettings));
if(!mf_df_parse_get_key_settings_response(
tx_rx.rx_data, tx_rx.rx_bits / 8, data->master_key_settings)) {
FURI_LOG_W(TAG, "Bad DESFire GET_KEY_SETTINGS response");
free(data->master_key_settings);
data->master_key_settings = NULL;
} else {
MifareDesfireKeyVersion** key_version_head =
&data->master_key_settings->key_version_head;
for(uint8_t key_id = 0; key_id < data->master_key_settings->max_keys; key_id++) {
tx_rx.tx_bits = 8 * mf_df_prepare_get_key_version(tx_rx.tx_data, key_id);
if(!furi_hal_nfc_tx_rx_full(&tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange getting key version");
continue;
}
MifareDesfireKeyVersion* key_version = malloc(sizeof(MifareDesfireKeyVersion));
memset(key_version, 0, sizeof(MifareDesfireKeyVersion));
key_version->id = key_id;
if(!mf_df_parse_get_key_version_response(
tx_rx.rx_data, tx_rx.rx_bits / 8, key_version)) {
FURI_LOG_W(TAG, "Bad DESFire GET_KEY_VERSION response");
free(key_version);
continue;
}
*key_version_head = key_version;
key_version_head = &key_version->next;
}
}
}
tx_rx.tx_bits = 8 * mf_df_prepare_get_application_ids(tx_rx.tx_data);
if(!furi_hal_nfc_tx_rx_full(&tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange getting application IDs");
} else {
if(!mf_df_parse_get_application_ids_response(
tx_rx.rx_data, tx_rx.rx_bits / 8, &data->app_head)) {
FURI_LOG_W(TAG, "Bad DESFire GET_APPLICATION_IDS response");
}
}
for(MifareDesfireApplication* app = data->app_head; app; app = app->next) {
tx_rx.tx_bits = 8 * mf_df_prepare_select_application(tx_rx.tx_data, app->id);
if(!furi_hal_nfc_tx_rx_full(&tx_rx) ||
!mf_df_parse_select_application_response(tx_rx.rx_data, tx_rx.rx_bits / 8)) {
FURI_LOG_W(TAG, "Bad exchange selecting application");
continue;
}
tx_rx.tx_bits = 8 * mf_df_prepare_get_key_settings(tx_rx.tx_data);
if(!furi_hal_nfc_tx_rx_full(&tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange getting key settings");
} else {
app->key_settings = malloc(sizeof(MifareDesfireKeySettings));
memset(app->key_settings, 0, sizeof(MifareDesfireKeySettings));
if(!mf_df_parse_get_key_settings_response(
tx_rx.rx_data, tx_rx.rx_bits / 8, app->key_settings)) {
FURI_LOG_W(TAG, "Bad DESFire GET_KEY_SETTINGS response");
free(app->key_settings);
app->key_settings = NULL;
continue;
}
MifareDesfireKeyVersion** key_version_head = &app->key_settings->key_version_head;
for(uint8_t key_id = 0; key_id < app->key_settings->max_keys; key_id++) {
tx_rx.tx_bits = 8 * mf_df_prepare_get_key_version(tx_rx.tx_data, key_id);
if(!furi_hal_nfc_tx_rx_full(&tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange getting key version");
continue;
}
MifareDesfireKeyVersion* key_version = malloc(sizeof(MifareDesfireKeyVersion));
memset(key_version, 0, sizeof(MifareDesfireKeyVersion));
key_version->id = key_id;
if(!mf_df_parse_get_key_version_response(
tx_rx.rx_data, tx_rx.rx_bits / 8, key_version)) {
FURI_LOG_W(TAG, "Bad DESFire GET_KEY_VERSION response");
free(key_version);
continue;
}
*key_version_head = key_version;
key_version_head = &key_version->next;
}
}
tx_rx.tx_bits = 8 * mf_df_prepare_get_file_ids(tx_rx.tx_data);
if(!furi_hal_nfc_tx_rx_full(&tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange getting file IDs");
} else {
if(!mf_df_parse_get_file_ids_response(
tx_rx.rx_data, tx_rx.rx_bits / 8, &app->file_head)) {
FURI_LOG_W(TAG, "Bad DESFire GET_FILE_IDS response");
}
}
for(MifareDesfireFile* file = app->file_head; file; file = file->next) {
tx_rx.tx_bits = 8 * mf_df_prepare_get_file_settings(tx_rx.tx_data, file->id);
if(!furi_hal_nfc_tx_rx_full(&tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange getting file settings");
continue;
}
if(!mf_df_parse_get_file_settings_response(
tx_rx.rx_data, tx_rx.rx_bits / 8, file)) {
FURI_LOG_W(TAG, "Bad DESFire GET_FILE_SETTINGS response");
continue;
}
switch(file->type) {
case MifareDesfireFileTypeStandard:
case MifareDesfireFileTypeBackup:
tx_rx.tx_bits = 8 * mf_df_prepare_read_data(tx_rx.tx_data, file->id, 0, 0);
break;
case MifareDesfireFileTypeValue:
tx_rx.tx_bits = 8 * mf_df_prepare_get_value(tx_rx.tx_data, file->id);
break;
case MifareDesfireFileTypeLinearRecord:
case MifareDesfireFileTypeCyclicRecord:
tx_rx.tx_bits = 8 * mf_df_prepare_read_records(tx_rx.tx_data, file->id, 0, 0);
break;
}
if(!furi_hal_nfc_tx_rx_full(&tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange reading file %d", file->id);
continue;
}
if(!mf_df_parse_read_data_response(tx_rx.rx_data, tx_rx.rx_bits / 8, file)) {
FURI_LOG_W(TAG, "Bad response reading file %d", file->id);
continue;
}
}
}
// Notify caller and exit
if(nfc_worker->callback) {
nfc_worker->callback(NfcWorkerEventSuccess, nfc_worker->context);
}
break;
}
}
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