flipperzero-firmware/lib/nfc_protocols/mifare_ultralight.c
gornekich 956788c09b
[FL-2369] NFC refactoring (#1095)
* nfc: clean up scenes
* nfc worker: remove field on from worker
* nfc worker: move full data exchange to furi hal
* nfc_device: check UID length
* nfc protocol: introduce mifare common API
* nfc: move common data to furi hal nfc
* nfc: rename emv_decoder -> emv
* nfc: move emv data structure to emv lib
* nfc: remove deactivate after detection
* nfc: rework furi hal nfc detect
* nfc: clean up CLI commands and type
* nfc: remove unused includes and function
* nfc: add TxRxType enum
* nfc: read mifare ultralight refactoring
* nfc: refactore mifare ultralight start
* rfal: fix custom data exchange
* nfc: refactor read bank card
* nfc: refactor read emv application
* nfc: refactor emv test emulation
* nfc: refactor uid emulation
* nfc: add limit to uid emulation logger
* fix source formatting
* furi_hal_nfc: fix data exchange full
* nfc: fix mifare ultralight type load

Co-authored-by: あく <alleteam@gmail.com>
2022-04-19 18:23:58 +03:00

404 lines
14 KiB
C

#include "mifare_ultralight.h"
#include <furi.h>
#define TAG "MfUltralight"
bool mf_ul_check_card_type(uint8_t ATQA0, uint8_t ATQA1, uint8_t SAK) {
if((ATQA0 == 0x44) && (ATQA1 == 0x00) && (SAK == 0x00)) {
return true;
}
return false;
}
static void mf_ul_set_default_version(MfUltralightReader* reader, MfUltralightData* data) {
data->type = MfUltralightTypeUnknown;
reader->pages_to_read = 16;
reader->support_fast_read = false;
}
bool mf_ultralight_read_version(
FuriHalNfcTxRxContext* tx_rx,
MfUltralightReader* reader,
MfUltralightData* data) {
bool version_read = false;
do {
FURI_LOG_D(TAG, "Reading version");
tx_rx->tx_data[0] = MF_UL_GET_VERSION_CMD;
tx_rx->tx_bits = 8;
tx_rx->tx_rx_type = FuriHalNfcTxRxTypeDefault;
if(!furi_hal_nfc_tx_rx(tx_rx, 4)) {
FURI_LOG_D(TAG, "Failed reading version");
mf_ul_set_default_version(reader, data);
furi_hal_nfc_sleep();
furi_hal_nfc_activate_nfca(300, NULL);
break;
}
MfUltralightVersion* version = (MfUltralightVersion*)tx_rx->rx_data;
data->version = *version;
if(version->storage_size == 0x0B || version->storage_size == 0x00) {
data->type = MfUltralightTypeUL11;
reader->pages_to_read = 20;
reader->support_fast_read = true;
} else if(version->storage_size == 0x0E) {
data->type = MfUltralightTypeUL21;
reader->pages_to_read = 41;
reader->support_fast_read = true;
} else if(version->storage_size == 0x0F) {
data->type = MfUltralightTypeNTAG213;
reader->pages_to_read = 45;
reader->support_fast_read = false;
} else if(version->storage_size == 0x11) {
data->type = MfUltralightTypeNTAG215;
reader->pages_to_read = 135;
reader->support_fast_read = false;
} else if(version->storage_size == 0x13) {
data->type = MfUltralightTypeNTAG216;
reader->pages_to_read = 231;
reader->support_fast_read = false;
} else {
mf_ul_set_default_version(reader, data);
break;
}
version_read = true;
} while(false);
return version_read;
}
bool mf_ultralight_read_pages(
FuriHalNfcTxRxContext* tx_rx,
MfUltralightReader* reader,
MfUltralightData* data) {
uint8_t pages_read_cnt = 0;
for(size_t i = 0; i < reader->pages_to_read; i += 4) {
FURI_LOG_D(TAG, "Reading pages %d - %d", i, i + 3);
tx_rx->tx_data[0] = MF_UL_READ_CMD;
tx_rx->tx_data[1] = i;
tx_rx->tx_bits = 16;
tx_rx->tx_rx_type = FuriHalNfcTxRxTypeDefault;
if(!furi_hal_nfc_tx_rx(tx_rx, 4)) {
FURI_LOG_D(TAG, "Failed to read pages %d - %d", i, i + 3);
break;
}
if(i + 4 <= reader->pages_to_read) {
pages_read_cnt = 4;
} else {
pages_read_cnt = reader->pages_to_read - reader->pages_read;
}
reader->pages_read += pages_read_cnt;
data->data_size = reader->pages_read * 4;
memcpy(&data->data[i * 4], tx_rx->rx_data, pages_read_cnt * 4);
}
return reader->pages_read == reader->pages_to_read;
}
bool mf_ultralight_fast_read_pages(
FuriHalNfcTxRxContext* tx_rx,
MfUltralightReader* reader,
MfUltralightData* data) {
FURI_LOG_D(TAG, "Reading pages 0 - %d", reader->pages_to_read);
tx_rx->tx_data[0] = MF_UL_FAST_READ_CMD;
tx_rx->tx_data[1] = 0;
tx_rx->tx_data[2] = reader->pages_to_read - 1;
tx_rx->tx_bits = 24;
tx_rx->tx_rx_type = FuriHalNfcTxRxTypeDefault;
if(furi_hal_nfc_tx_rx(tx_rx, 20)) {
reader->pages_read = reader->pages_to_read;
data->data_size = reader->pages_read * 4;
memcpy(data->data, tx_rx->rx_data, data->data_size);
} else {
FURI_LOG_D(TAG, "Failed to read pages 0 - %d", reader->pages_to_read);
}
return reader->pages_read == reader->pages_to_read;
}
bool mf_ultralight_read_signature(FuriHalNfcTxRxContext* tx_rx, MfUltralightData* data) {
bool signature_read = false;
FURI_LOG_D(TAG, "Reading signature");
tx_rx->tx_data[0] = MF_UL_READ_SIG;
tx_rx->tx_data[1] = 0;
tx_rx->tx_bits = 16;
tx_rx->tx_rx_type = FuriHalNfcTxRxTypeDefault;
if(furi_hal_nfc_tx_rx(tx_rx, 7)) {
memcpy(data->signature, tx_rx->rx_data, sizeof(data->signature));
signature_read = true;
} else {
FURI_LOG_D(TAG, "Failed redaing signature");
}
return signature_read;
}
bool mf_ultralight_read_counters(FuriHalNfcTxRxContext* tx_rx, MfUltralightData* data) {
uint8_t counter_read = 0;
FURI_LOG_D(TAG, "Reading counters");
for(size_t i = 0; i < 3; i++) {
tx_rx->tx_data[0] = MF_UL_READ_CNT;
tx_rx->rx_data[1] = i;
tx_rx->tx_bits = 16;
tx_rx->tx_rx_type = FuriHalNfcTxRxTypeDefault;
if(!furi_hal_nfc_tx_rx(tx_rx, 4)) {
FURI_LOG_D(TAG, "Failed to read %d counter", i);
break;
}
data->counter[i] = (tx_rx->rx_data[2] << 16) | (tx_rx->rx_data[1] << 8) |
tx_rx->rx_data[0];
counter_read++;
}
return counter_read == 2;
}
bool mf_ultralight_read_tearing_flags(FuriHalNfcTxRxContext* tx_rx, MfUltralightData* data) {
uint8_t flag_read = 0;
FURI_LOG_D(TAG, "Reading tearing flags");
for(size_t i = 0; i < 3; i++) {
tx_rx->tx_data[0] = MF_UL_CHECK_TEARING;
tx_rx->rx_data[1] = i;
tx_rx->tx_bits = 16;
tx_rx->tx_rx_type = FuriHalNfcTxRxTypeDefault;
if(!furi_hal_nfc_tx_rx(tx_rx, 4)) {
FURI_LOG_D(TAG, "Failed to read %d tearing flag", i);
break;
}
data->tearing[i] = tx_rx->rx_data[0];
flag_read++;
}
return flag_read == 2;
}
bool mf_ul_read_card(
FuriHalNfcTxRxContext* tx_rx,
MfUltralightReader* reader,
MfUltralightData* data) {
furi_assert(tx_rx);
furi_assert(reader);
furi_assert(data);
bool card_read = false;
// Read Mifare Ultralight version
if(mf_ultralight_read_version(tx_rx, reader, data)) {
// Read Signature
mf_ultralight_read_signature(tx_rx, data);
}
// Read data blocks
if(reader->support_fast_read) {
mf_ultralight_read_counters(tx_rx, data);
mf_ultralight_read_tearing_flags(tx_rx, data);
}
card_read = mf_ultralight_read_pages(tx_rx, reader, data);
return card_read;
}
// TODO rework
static void mf_ul_protect_auth_data_on_read_command(
uint8_t* tx_buff,
uint8_t start_page,
uint8_t end_page,
MfUltralightEmulator* emulator) {
if(emulator->data.type >= MfUltralightTypeNTAG213) {
uint8_t pwd_page = (emulator->data.data_size / 4) - 2;
uint8_t pack_page = pwd_page + 1;
if((start_page <= pwd_page) && (end_page >= pwd_page)) {
memset(&tx_buff[(pwd_page - start_page) * 4], 0, 4);
}
if((start_page <= pack_page) && (end_page >= pack_page)) {
memset(&tx_buff[(pack_page - start_page) * 4], 0, 2);
}
}
}
void mf_ul_prepare_emulation(MfUltralightEmulator* emulator, MfUltralightData* data) {
emulator->data = *data;
emulator->auth_data = NULL;
emulator->data_changed = false;
emulator->comp_write_cmd_started = false;
if(data->type == MfUltralightTypeUnknown) {
emulator->support_fast_read = false;
} else if(data->type == MfUltralightTypeUL11) {
emulator->support_fast_read = true;
} else if(data->type == MfUltralightTypeUL21) {
emulator->support_fast_read = true;
} else if(data->type == MfUltralightTypeNTAG213) {
emulator->support_fast_read = false;
} else if(data->type == MfUltralightTypeNTAG215) {
emulator->support_fast_read = false;
} else if(data->type == MfUltralightTypeNTAG216) {
emulator->support_fast_read = false;
}
if(data->type >= MfUltralightTypeNTAG213) {
uint16_t pwd_page = (data->data_size / 4) - 2;
emulator->auth_data = (MfUltralightAuth*)&data->data[pwd_page * 4];
}
}
bool mf_ul_prepare_emulation_response(
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);
MfUltralightEmulator* emulator = context;
uint8_t cmd = buff_rx[0];
uint16_t page_num = emulator->data.data_size / 4;
uint16_t tx_bytes = 0;
uint16_t tx_bits = 0;
bool command_parsed = false;
// Check composite commands
if(emulator->comp_write_cmd_started) {
// Compatibility write is the only one composit command
if(buff_rx_len == 16) {
memcpy(&emulator->data.data[emulator->comp_write_page_addr * 4], buff_rx, 4);
emulator->data_changed = true;
// Send ACK message
buff_tx[0] = 0x0A;
tx_bits = 4;
*data_type = FURI_HAL_NFC_TXRX_RAW;
command_parsed = true;
}
emulator->comp_write_cmd_started = false;
} else if(cmd == MF_UL_GET_VERSION_CMD) {
if(emulator->data.type != MfUltralightTypeUnknown) {
tx_bytes = sizeof(emulator->data.version);
memcpy(buff_tx, &emulator->data.version, tx_bytes);
*data_type = FURI_HAL_NFC_TXRX_DEFAULT;
command_parsed = true;
}
} else if(cmd == MF_UL_READ_CMD) {
uint8_t start_page = buff_rx[1];
if(start_page < page_num) {
tx_bytes = 16;
if(start_page + 4 > page_num) {
// Handle roll-over mechanism
uint8_t end_pages_num = page_num - start_page;
memcpy(buff_tx, &emulator->data.data[start_page * 4], end_pages_num * 4);
memcpy(&buff_tx[end_pages_num * 4], emulator->data.data, (4 - end_pages_num) * 4);
} else {
memcpy(buff_tx, &emulator->data.data[start_page * 4], tx_bytes);
}
mf_ul_protect_auth_data_on_read_command(
buff_tx, start_page, (start_page + 4), emulator);
*data_type = FURI_HAL_NFC_TXRX_DEFAULT;
command_parsed = true;
}
} else if(cmd == MF_UL_FAST_READ_CMD) {
if(emulator->support_fast_read) {
uint8_t start_page = buff_rx[1];
uint8_t end_page = buff_rx[2];
if((start_page < page_num) && (end_page < page_num) && (start_page < (end_page + 1))) {
tx_bytes = ((end_page + 1) - start_page) * 4;
memcpy(buff_tx, &emulator->data.data[start_page * 4], tx_bytes);
mf_ul_protect_auth_data_on_read_command(buff_tx, start_page, end_page, emulator);
*data_type = FURI_HAL_NFC_TXRX_DEFAULT;
command_parsed = true;
}
}
} else if(cmd == MF_UL_WRITE) {
uint8_t write_page = buff_rx[1];
if((write_page > 1) && (write_page < page_num - 2)) {
memcpy(&emulator->data.data[write_page * 4], &buff_rx[2], 4);
emulator->data_changed = true;
// ACK
buff_tx[0] = 0x0A;
tx_bits = 4;
*data_type = FURI_HAL_NFC_TXRX_RAW;
command_parsed = true;
}
} else if(cmd == MF_UL_COMP_WRITE) {
uint8_t write_page = buff_rx[1];
if((write_page > 1) && (write_page < page_num - 2)) {
emulator->comp_write_cmd_started = true;
emulator->comp_write_page_addr = write_page;
// ACK
buff_tx[0] = 0x0A;
tx_bits = 4;
*data_type = FURI_HAL_NFC_TXRX_RAW;
command_parsed = true;
}
} else if(cmd == MF_UL_READ_CNT) {
uint8_t cnt_num = buff_rx[1];
if(cnt_num < 3) {
buff_tx[0] = emulator->data.counter[cnt_num] >> 16;
buff_tx[1] = emulator->data.counter[cnt_num] >> 8;
buff_tx[2] = emulator->data.counter[cnt_num];
tx_bytes = 3;
*data_type = FURI_HAL_NFC_TXRX_DEFAULT;
command_parsed = true;
}
} else if(cmd == MF_UL_INC_CNT) {
uint8_t cnt_num = buff_rx[1];
uint32_t inc = (buff_rx[2] | (buff_rx[3] << 8) | (buff_rx[4] << 16));
if((cnt_num < 3) && (emulator->data.counter[cnt_num] + inc < 0x00FFFFFF)) {
emulator->data.counter[cnt_num] += inc;
emulator->data_changed = true;
// ACK
buff_tx[0] = 0x0A;
tx_bits = 4;
*data_type = FURI_HAL_NFC_TXRX_RAW;
command_parsed = true;
}
} else if(cmd == MF_UL_AUTH) {
if(emulator->data.type >= MfUltralightTypeNTAG213) {
if(memcmp(&buff_rx[1], emulator->auth_data->pwd, 4) == 0) {
buff_tx[0] = emulator->auth_data->pack.raw[0];
buff_tx[1] = emulator->auth_data->pack.raw[1];
tx_bytes = 2;
*data_type = FURI_HAL_NFC_TXRX_DEFAULT;
command_parsed = true;
} else if(!emulator->auth_data->pack.value) {
buff_tx[0] = 0x80;
buff_tx[1] = 0x80;
tx_bytes = 2;
*data_type = FURI_HAL_NFC_TXRX_DEFAULT;
command_parsed = true;
}
}
} else if(cmd == MF_UL_READ_SIG) {
// Check 2nd byte = 0x00 - RFU
if(buff_rx[1] == 0x00) {
tx_bytes = sizeof(emulator->data.signature);
memcpy(buff_tx, emulator->data.signature, tx_bytes);
*data_type = FURI_HAL_NFC_TXRX_DEFAULT;
command_parsed = true;
}
} else if(cmd == MF_UL_CHECK_TEARING) {
uint8_t cnt_num = buff_rx[1];
if(cnt_num < 3) {
buff_tx[0] = emulator->data.tearing[cnt_num];
tx_bytes = 1;
*data_type = FURI_HAL_NFC_TXRX_DEFAULT;
command_parsed = true;
}
} else if(cmd == MF_UL_HALT_START) {
tx_bits = 0;
command_parsed = true;
}
if(!command_parsed) {
// Send NACK
buff_tx[0] = 0x00;
tx_bits = 4;
*data_type = FURI_HAL_NFC_TXRX_RAW;
}
// Return tx buffer size in bits
if(tx_bytes) {
tx_bits = tx_bytes * 8;
}
*buff_tx_len = tx_bits;
return tx_bits > 0;
}