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unleashed-firmware/lib/nfc/protocols/slix.c
g3gg0.de c10c45616d
SLIX2 emulation support / practical use for Dymo printers (#2783) 
* improve digital_signal for longer packets, also clean up code
* added SLIX2 specific features like signature and unknown keys (for issue #2781), added WRITE_PASSWORD handling
* fix NfcV AFI selection
* when NFCV_CMD_READ_MULTI_BLOCK reads beyond memory end, return the maximum possible block's content
* added SLIX2 reading
* fix NXP SYSTEMINFO response check size
* capture the first received password if none was set before
* clear stored data before reading SLIX details renamed slix2_dump functions to slix2_read
* display card block size values as decimal

Co-authored-by: あく <alleteam@gmail.com>
2023-06-29 02:44:34 +09:00

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#include <limits.h>
#include "nfcv.h"
#include "slix.h"
#include "nfc_util.h"
#include <furi.h>
#include "furi_hal_nfc.h"
#include <furi_hal_random.h>
#define TAG "SLIX"
ReturnCode slix2_read_nxp_sysinfo(FuriHalNfcDevData* nfc_data, NfcVData* nfcv_data) {
furi_assert(nfc_data);
furi_assert(nfcv_data);
uint8_t rxBuf[32];
uint16_t received = 0;
ReturnCode ret = ERR_NONE;
FURI_LOG_D(TAG, "Read NXP SYSTEM INFORMATION...");
for(int tries = 0; tries < NFCV_COMMAND_RETRIES; tries++) {
uint8_t cmd[] = {};
uint8_t uid[NFCV_UID_LENGTH];
/* UID is stored reversed in requests */
for(int pos = 0; pos < nfc_data->uid_len; pos++) {
uid[pos] = nfc_data->uid[nfc_data->uid_len - 1 - pos];
}
ReturnCode ret = rfalNfcvPollerTransceiveReq(
NFCV_CMD_NXP_GET_NXP_SYSTEM_INFORMATION,
RFAL_NFCV_REQ_FLAG_DEFAULT,
NFCV_MANUFACTURER_NXP,
uid,
cmd,
sizeof(cmd),
rxBuf,
sizeof(rxBuf),
&received);
if(ret == ERR_NONE) {
break;
}
}
if(ret != ERR_NONE || received != 8) { //-V560
FURI_LOG_D(TAG, "Failed: %d, %d", ret, received);
return ret;
}
FURI_LOG_D(TAG, "Success...");
NfcVSlixData* slix = &nfcv_data->sub_data.slix;
slix->pp_pointer = rxBuf[1];
slix->pp_condition = rxBuf[2];
/* convert NXP's to our internal lock bits format */
nfcv_data->security_status[0] = 0;
nfcv_data->security_status[0] |= (rxBuf[3] & SlixLockBitDsfid) ? NfcVLockBitDsfid : 0;
nfcv_data->security_status[0] |= (rxBuf[3] & SlixLockBitAfi) ? NfcVLockBitAfi : 0;
nfcv_data->security_status[0] |= (rxBuf[3] & SlixLockBitEas) ? NfcVLockBitEas : 0;
nfcv_data->security_status[0] |= (rxBuf[3] & SlixLockBitPpl) ? NfcVLockBitPpl : 0;
return ERR_NONE;
}
ReturnCode slix2_read_signature(FuriHalNfcDevData* nfc_data, NfcVData* nfcv_data) {
furi_assert(nfc_data);
furi_assert(nfcv_data);
uint8_t rxBuf[64];
uint16_t received = 0;
ReturnCode ret = ERR_NONE;
FURI_LOG_D(TAG, "Read SIGNATURE...");
for(int tries = 0; tries < NFCV_COMMAND_RETRIES; tries++) {
uint8_t cmd[] = {};
uint8_t uid[NFCV_UID_LENGTH];
/* UID is stored reversed in requests */
for(int pos = 0; pos < nfc_data->uid_len; pos++) {
uid[pos] = nfc_data->uid[nfc_data->uid_len - 1 - pos];
}
ReturnCode ret = rfalNfcvPollerTransceiveReq(
NFCV_CMD_NXP_READ_SIGNATURE,
RFAL_NFCV_REQ_FLAG_DEFAULT,
NFCV_MANUFACTURER_NXP,
uid,
cmd,
sizeof(cmd),
rxBuf,
sizeof(rxBuf),
&received);
if(ret == ERR_NONE) {
break;
}
}
if(ret != ERR_NONE || received != 33) { //-V560
FURI_LOG_D(TAG, "Failed: %d, %d", ret, received);
return ret;
}
FURI_LOG_D(TAG, "Success...");
NfcVSlixData* slix = &nfcv_data->sub_data.slix;
memcpy(slix->signature, &rxBuf[1], 32);
return ERR_NONE;
}
ReturnCode slix2_read_custom(FuriHalNfcDevData* nfc_data, NfcVData* nfcv_data) {
ReturnCode ret = ERR_NONE;
ret = slix2_read_nxp_sysinfo(nfc_data, nfcv_data);
if(ret != ERR_NONE) {
return ret;
}
ret = slix2_read_signature(nfc_data, nfcv_data);
return ret;
}
static uint32_t slix_read_be(uint8_t* data, uint32_t length) {
uint32_t value = 0;
for(uint32_t pos = 0; pos < length; pos++) {
value <<= 8;
value |= data[pos];
}
return value;
}
uint8_t slix_get_ti(FuriHalNfcDevData* nfc_data) {
return (nfc_data->uid[3] >> 3) & 3;
}
bool slix_check_card_type(FuriHalNfcDevData* nfc_data) {
if((nfc_data->uid[0] == 0xE0) && (nfc_data->uid[1] == 0x04) && (nfc_data->uid[2] == 0x01) &&
slix_get_ti(nfc_data) == 2) {
return true;
}
return false;
}
bool slix2_check_card_type(FuriHalNfcDevData* nfc_data) {
if((nfc_data->uid[0] == 0xE0) && (nfc_data->uid[1] == 0x04) && (nfc_data->uid[2] == 0x01) &&
slix_get_ti(nfc_data) == 1) {
return true;
}
return false;
}
bool slix_s_check_card_type(FuriHalNfcDevData* nfc_data) {
if((nfc_data->uid[0] == 0xE0) && (nfc_data->uid[1] == 0x04) && (nfc_data->uid[2] == 0x02)) {
return true;
}
return false;
}
bool slix_l_check_card_type(FuriHalNfcDevData* nfc_data) {
if((nfc_data->uid[0] == 0xE0) && (nfc_data->uid[1] == 0x04) && (nfc_data->uid[2] == 0x03)) {
return true;
}
return false;
}
ReturnCode slix_get_random(NfcVData* data) {
uint16_t received = 0;
uint8_t rxBuf[32];
ReturnCode ret = rfalNfcvPollerTransceiveReq(
NFCV_CMD_NXP_GET_RANDOM_NUMBER,
RFAL_NFCV_REQ_FLAG_DEFAULT,
NFCV_MANUFACTURER_NXP,
NULL,
NULL,
0,
rxBuf,
sizeof(rxBuf),
&received);
if(ret == ERR_NONE) {
if(received != 3) {
return ERR_PROTO;
}
if(data != NULL) {
data->sub_data.slix.rand[0] = rxBuf[2];
data->sub_data.slix.rand[1] = rxBuf[1];
}
}
return ret;
}
ReturnCode slix_unlock(NfcVData* data, uint32_t password_id) {
furi_assert(rand);
uint16_t received = 0;
uint8_t rxBuf[32];
uint8_t cmd_set_pass[] = {
password_id,
data->sub_data.slix.rand[1],
data->sub_data.slix.rand[0],
data->sub_data.slix.rand[1],
data->sub_data.slix.rand[0]};
uint8_t* password = NULL;
switch(password_id) {
case SLIX_PASS_READ:
password = data->sub_data.slix.key_read;
break;
case SLIX_PASS_WRITE:
password = data->sub_data.slix.key_write;
break;
case SLIX_PASS_PRIVACY:
password = data->sub_data.slix.key_privacy;
break;
case SLIX_PASS_DESTROY:
password = data->sub_data.slix.key_destroy;
break;
case SLIX_PASS_EASAFI:
password = data->sub_data.slix.key_eas;
break;
default:
break;
}
if(!password) {
return ERR_NOTSUPP;
}
for(int pos = 0; pos < 4; pos++) {
cmd_set_pass[1 + pos] ^= password[3 - pos];
}
ReturnCode ret = rfalNfcvPollerTransceiveReq(
NFCV_CMD_NXP_SET_PASSWORD,
RFAL_NFCV_REQ_FLAG_DATA_RATE,
NFCV_MANUFACTURER_NXP,
NULL,
cmd_set_pass,
sizeof(cmd_set_pass),
rxBuf,
sizeof(rxBuf),
&received);
return ret;
}
static void slix_generic_pass_infos(
uint8_t password_id,
NfcVSlixData* slix,
uint8_t** password,
uint32_t* flag_valid,
uint32_t* flag_set) {
switch(password_id) {
case SLIX_PASS_READ:
*password = slix->key_read;
*flag_valid = NfcVSlixDataFlagsValidKeyRead;
*flag_set = NfcVSlixDataFlagsHasKeyRead;
break;
case SLIX_PASS_WRITE:
*password = slix->key_write;
*flag_valid = NfcVSlixDataFlagsValidKeyWrite;
*flag_set = NfcVSlixDataFlagsHasKeyWrite;
break;
case SLIX_PASS_PRIVACY:
*password = slix->key_privacy;
*flag_valid = NfcVSlixDataFlagsValidKeyPrivacy;
*flag_set = NfcVSlixDataFlagsHasKeyPrivacy;
break;
case SLIX_PASS_DESTROY:
*password = slix->key_destroy;
*flag_valid = NfcVSlixDataFlagsValidKeyDestroy;
*flag_set = NfcVSlixDataFlagsHasKeyDestroy;
break;
case SLIX_PASS_EASAFI:
*password = slix->key_eas;
*flag_valid = NfcVSlixDataFlagsValidKeyEas;
*flag_set = NfcVSlixDataFlagsHasKeyEas;
break;
default:
break;
}
}
bool slix_generic_protocol_filter(
FuriHalNfcTxRxContext* tx_rx,
FuriHalNfcDevData* nfc_data,
void* nfcv_data_in,
uint32_t password_supported) {
furi_assert(tx_rx);
furi_assert(nfc_data);
furi_assert(nfcv_data_in);
NfcVData* nfcv_data = (NfcVData*)nfcv_data_in;
NfcVEmuProtocolCtx* ctx = nfcv_data->emu_protocol_ctx;
NfcVSlixData* slix = &nfcv_data->sub_data.slix;
if((slix->flags & NfcVSlixDataFlagsPrivacy) &&
ctx->command != NFCV_CMD_NXP_GET_RANDOM_NUMBER &&
ctx->command != NFCV_CMD_NXP_SET_PASSWORD) {
snprintf(
nfcv_data->last_command,
sizeof(nfcv_data->last_command),
"command 0x%02X ignored, privacy mode",
ctx->command);
FURI_LOG_D(TAG, "%s", nfcv_data->last_command);
return true;
}
bool handled = false;
switch(ctx->command) {
case NFCV_CMD_NXP_GET_RANDOM_NUMBER: {
slix->rand[0] = furi_hal_random_get();
slix->rand[1] = furi_hal_random_get();
ctx->response_buffer[0] = NFCV_NOERROR;
ctx->response_buffer[1] = slix->rand[1];
ctx->response_buffer[2] = slix->rand[0];
nfcv_emu_send(
tx_rx, nfcv_data, ctx->response_buffer, 3, ctx->response_flags, ctx->send_time);
snprintf(
nfcv_data->last_command,
sizeof(nfcv_data->last_command),
"GET_RANDOM_NUMBER -> 0x%02X%02X",
slix->rand[0],
slix->rand[1]);
handled = true;
break;
}
case NFCV_CMD_NXP_SET_PASSWORD: {
/* the password to be set is the first parameter */
uint8_t password_id = nfcv_data->frame[ctx->payload_offset];
/* right after that is the XORed password */
uint8_t* password_xored = &nfcv_data->frame[ctx->payload_offset + 1];
/* only handle if the password type is supported */
if(!(password_id & password_supported)) {
break;
}
/* fetch the last RAND value */
uint8_t* rand = slix->rand;
/* first calc the password that has been sent */
uint8_t password_rcv[4];
for(int pos = 0; pos < 4; pos++) {
password_rcv[pos] = password_xored[3 - pos] ^ rand[pos % 2];
}
uint32_t pass_received = slix_read_be(password_rcv, 4);
/* then determine the password type (or even update if not set yet) */
uint8_t* password = NULL;
uint32_t flag_valid = 0;
uint32_t flag_set = 0;
slix_generic_pass_infos(password_id, slix, &password, &flag_valid, &flag_set);
/* when the password is not supported, return silently */
if(!password) {
break;
}
/* check if the password is known */
bool pass_valid = false;
uint32_t pass_expect = 0;
if(slix->flags & flag_set) {
/* if so, fetch the stored password and compare */
pass_expect = slix_read_be(password, 4);
pass_valid = (pass_expect == pass_received);
} else {
/* if not known, just accept it and store that password */
memcpy(password, password_rcv, 4);
nfcv_data->modified = true;
slix->flags |= flag_set;
pass_valid = true;
}
/* if the pass was valid or accepted for other reasons, continue */
if(pass_valid) {
slix->flags |= flag_valid;
/* handle actions when a correct password was given, aside of setting the flag */
switch(password_id) {
case SLIX_PASS_PRIVACY:
slix->flags &= ~NfcVSlixDataFlagsPrivacy;
nfcv_data->modified = true;
break;
case SLIX_PASS_DESTROY:
slix->flags |= NfcVSlixDataFlagsDestroyed;
FURI_LOG_D(TAG, "Pooof! Got destroyed");
break;
default:
break;
}
ctx->response_buffer[0] = NFCV_NOERROR;
nfcv_emu_send(
tx_rx, nfcv_data, ctx->response_buffer, 1, ctx->response_flags, ctx->send_time);
snprintf(
nfcv_data->last_command,
sizeof(nfcv_data->last_command),
"SET_PASSWORD #%02X 0x%08lX OK",
password_id,
pass_received);
} else {
snprintf(
nfcv_data->last_command,
sizeof(nfcv_data->last_command),
"SET_PASSWORD #%02X 0x%08lX/%08lX FAIL",
password_id,
pass_received,
pass_expect);
}
handled = true;
break;
}
case NFCV_CMD_NXP_WRITE_PASSWORD: {
uint8_t password_id = nfcv_data->frame[ctx->payload_offset];
if(!(password_id & password_supported)) {
break;
}
uint8_t* new_password = &nfcv_data->frame[ctx->payload_offset + 1];
uint8_t* password = NULL;
uint32_t flag_valid = 0;
uint32_t flag_set = 0;
slix_generic_pass_infos(password_id, slix, &password, &flag_valid, &flag_set);
/* when the password is not supported, return silently */
if(!password) {
break;
}
bool pass_valid = (slix->flags & flag_valid);
if(!(slix->flags & flag_set)) {
pass_valid = true;
}
if(pass_valid) {
slix->flags |= flag_valid;
slix->flags |= flag_set;
memcpy(password, new_password, 4);
ctx->response_buffer[0] = NFCV_NOERROR;
nfcv_emu_send(
tx_rx, nfcv_data, ctx->response_buffer, 1, ctx->response_flags, ctx->send_time);
snprintf(
nfcv_data->last_command, sizeof(nfcv_data->last_command), "WRITE_PASSWORD OK");
} else {
snprintf(
nfcv_data->last_command, sizeof(nfcv_data->last_command), "WRITE_PASSWORD FAIL");
}
handled = true;
break;
}
case NFCV_CMD_NXP_ENABLE_PRIVACY: {
ctx->response_buffer[0] = NFCV_NOERROR;
nfcv_emu_send(
tx_rx, nfcv_data, ctx->response_buffer, 1, ctx->response_flags, ctx->send_time);
snprintf(
nfcv_data->last_command,
sizeof(nfcv_data->last_command),
"NFCV_CMD_NXP_ENABLE_PRIVACY");
slix->flags |= NfcVSlixDataFlagsPrivacy;
handled = true;
break;
}
}
return handled;
}
bool slix_l_protocol_filter(
FuriHalNfcTxRxContext* tx_rx,
FuriHalNfcDevData* nfc_data,
void* nfcv_data_in) {
furi_assert(tx_rx);
furi_assert(nfc_data);
furi_assert(nfcv_data_in);
bool handled = false;
/* many SLIX share some of the functions, place that in a generic handler */
if(slix_generic_protocol_filter(
tx_rx,
nfc_data,
nfcv_data_in,
SLIX_PASS_PRIVACY | SLIX_PASS_DESTROY | SLIX_PASS_EASAFI)) {
return true;
}
return handled;
}
void slix_l_prepare(NfcVData* nfcv_data) {
FURI_LOG_D(
TAG, " Privacy pass: 0x%08lX", slix_read_be(nfcv_data->sub_data.slix.key_privacy, 4));
FURI_LOG_D(
TAG, " Destroy pass: 0x%08lX", slix_read_be(nfcv_data->sub_data.slix.key_destroy, 4));
FURI_LOG_D(TAG, " EAS pass: 0x%08lX", slix_read_be(nfcv_data->sub_data.slix.key_eas, 4));
FURI_LOG_D(
TAG,
" Privacy mode: %s",
(nfcv_data->sub_data.slix.flags & NfcVSlixDataFlagsPrivacy) ? "ON" : "OFF");
NfcVEmuProtocolCtx* ctx = nfcv_data->emu_protocol_ctx;
ctx->emu_protocol_filter = &slix_l_protocol_filter;
}
bool slix_s_protocol_filter(
FuriHalNfcTxRxContext* tx_rx,
FuriHalNfcDevData* nfc_data,
void* nfcv_data_in) {
furi_assert(tx_rx);
furi_assert(nfc_data);
furi_assert(nfcv_data_in);
bool handled = false;
/* many SLIX share some of the functions, place that in a generic handler */
if(slix_generic_protocol_filter(tx_rx, nfc_data, nfcv_data_in, SLIX_PASS_ALL)) {
return true;
}
return handled;
}
void slix_s_prepare(NfcVData* nfcv_data) {
FURI_LOG_D(
TAG, " Privacy pass: 0x%08lX", slix_read_be(nfcv_data->sub_data.slix.key_privacy, 4));
FURI_LOG_D(
TAG, " Destroy pass: 0x%08lX", slix_read_be(nfcv_data->sub_data.slix.key_destroy, 4));
FURI_LOG_D(TAG, " EAS pass: 0x%08lX", slix_read_be(nfcv_data->sub_data.slix.key_eas, 4));
FURI_LOG_D(
TAG,
" Privacy mode: %s",
(nfcv_data->sub_data.slix.flags & NfcVSlixDataFlagsPrivacy) ? "ON" : "OFF");
NfcVEmuProtocolCtx* ctx = nfcv_data->emu_protocol_ctx;
ctx->emu_protocol_filter = &slix_s_protocol_filter;
}
bool slix_protocol_filter(
FuriHalNfcTxRxContext* tx_rx,
FuriHalNfcDevData* nfc_data,
void* nfcv_data_in) {
furi_assert(tx_rx);
furi_assert(nfc_data);
furi_assert(nfcv_data_in);
bool handled = false;
/* many SLIX share some of the functions, place that in a generic handler */
if(slix_generic_protocol_filter(tx_rx, nfc_data, nfcv_data_in, SLIX_PASS_EASAFI)) {
return true;
}
return handled;
}
void slix_prepare(NfcVData* nfcv_data) {
FURI_LOG_D(
TAG, " Privacy pass: 0x%08lX", slix_read_be(nfcv_data->sub_data.slix.key_privacy, 4));
FURI_LOG_D(
TAG, " Destroy pass: 0x%08lX", slix_read_be(nfcv_data->sub_data.slix.key_destroy, 4));
FURI_LOG_D(TAG, " EAS pass: 0x%08lX", slix_read_be(nfcv_data->sub_data.slix.key_eas, 4));
FURI_LOG_D(
TAG,
" Privacy mode: %s",
(nfcv_data->sub_data.slix.flags & NfcVSlixDataFlagsPrivacy) ? "ON" : "OFF");
NfcVEmuProtocolCtx* ctx = nfcv_data->emu_protocol_ctx;
ctx->emu_protocol_filter = &slix_protocol_filter;
}
bool slix2_protocol_filter( // -V524
FuriHalNfcTxRxContext* tx_rx,
FuriHalNfcDevData* nfc_data,
void* nfcv_data_in) {
furi_assert(tx_rx);
furi_assert(nfc_data);
furi_assert(nfcv_data_in);
NfcVData* nfcv_data = (NfcVData*)nfcv_data_in;
NfcVEmuProtocolCtx* ctx = nfcv_data->emu_protocol_ctx;
NfcVSlixData* slix = &nfcv_data->sub_data.slix;
bool handled = false;
/* many SLIX share some of the functions, place that in a generic handler */
if(slix_generic_protocol_filter(tx_rx, nfc_data, nfcv_data_in, SLIX_PASS_ALL)) {
return true;
}
switch(ctx->command) {
/* override WRITE BLOCK for block 79 (16 bit counter) */
case NFCV_CMD_WRITE_BLOCK:
case NFCV_CMD_WRITE_MULTI_BLOCK: {
uint8_t resp_len = 1;
uint8_t blocks = 1;
uint8_t block = nfcv_data->frame[ctx->payload_offset];
uint8_t data_pos = ctx->payload_offset + 1;
if(ctx->command == NFCV_CMD_WRITE_MULTI_BLOCK) {
blocks = nfcv_data->frame[data_pos] + 1;
data_pos++;
}
uint8_t* data = &nfcv_data->frame[data_pos];
uint32_t data_len = nfcv_data->block_size * blocks;
if((block + blocks) <= nfcv_data->block_num &&
(data_pos + data_len + 2) == nfcv_data->frame_length) {
ctx->response_buffer[0] = NFCV_NOERROR;
for(int block_num = block; block_num < block + blocks; block_num++) {
/* special case, 16-bit counter */
if(block_num == 79) {
uint32_t dest;
uint32_t ctr_old;
memcpy(&dest, &nfcv_data->frame[data_pos], 4);
memcpy(&ctr_old, &nfcv_data->data[nfcv_data->block_size * block_num], 4);
uint32_t ctr_new = ctr_old;
bool allowed = true;
/* increment counter */
if(dest == 1) {
ctr_new = (ctr_old & 0xFFFF0000) | ((ctr_old + 1) & 0xFFFF);
/* protection flag set? */
if(ctr_old & 0x01000000) { //-V1051
allowed = nfcv_data->sub_data.slix.flags &
NfcVSlixDataFlagsValidKeyRead;
}
} else {
ctr_new = dest;
allowed = nfcv_data->sub_data.slix.flags & NfcVSlixDataFlagsValidKeyWrite;
}
if(allowed) {
memcpy( //-V1086
&nfcv_data->data[nfcv_data->block_size * block_num],
&ctr_new,
4);
} else {
/* incorrect read or write password */
ctx->response_buffer[0] = NFCV_RES_FLAG_ERROR;
ctx->response_buffer[1] = NFCV_ERROR_GENERIC;
resp_len = 2;
}
} else {
memcpy(
&nfcv_data->data[nfcv_data->block_size * block_num],
&nfcv_data->frame[data_pos],
nfcv_data->block_size);
}
data_pos += nfcv_data->block_size;
}
nfcv_data->modified = true;
} else {
ctx->response_buffer[0] = NFCV_RES_FLAG_ERROR;
ctx->response_buffer[1] = NFCV_ERROR_GENERIC;
resp_len = 2;
}
bool respond = (ctx->response_buffer[0] == NFCV_NOERROR) ||
(ctx->addressed || ctx->selected);
if(respond) {
nfcv_emu_send(
tx_rx,
nfcv_data,
ctx->response_buffer,
resp_len,
ctx->response_flags,
ctx->send_time);
}
if(ctx->command == NFCV_CMD_WRITE_MULTI_BLOCK) {
snprintf(
nfcv_data->last_command,
sizeof(nfcv_data->last_command),
"WRITE MULTI BLOCK %d, %d blocks",
block,
blocks);
} else {
snprintf(
nfcv_data->last_command,
sizeof(nfcv_data->last_command),
"WRITE BLOCK %d <- %02X %02X %02X %02X",
block,
data[0],
data[1],
data[2],
data[3]);
}
handled = true;
break;
}
case NFCV_CMD_NXP_READ_SIGNATURE: {
uint32_t len = 0;
ctx->response_buffer[len++] = NFCV_NOERROR;
memcpy(&ctx->response_buffer[len], slix->signature, sizeof(slix->signature));
len += sizeof(slix->signature);
nfcv_emu_send(
tx_rx, nfcv_data, ctx->response_buffer, len, ctx->response_flags, ctx->send_time);
snprintf(nfcv_data->last_command, sizeof(nfcv_data->last_command), "READ_SIGNATURE");
handled = true;
break;
}
case NFCV_CMD_NXP_GET_NXP_SYSTEM_INFORMATION: {
uint32_t len = 0;
uint8_t lock_bits = 0;
/* convert our internal lock bits format into NXP's */
lock_bits |= (nfcv_data->security_status[0] & NfcVLockBitDsfid) ? SlixLockBitDsfid : 0;
lock_bits |= (nfcv_data->security_status[0] & NfcVLockBitAfi) ? SlixLockBitAfi : 0;
lock_bits |= (nfcv_data->security_status[0] & NfcVLockBitEas) ? SlixLockBitEas : 0;
lock_bits |= (nfcv_data->security_status[0] & NfcVLockBitPpl) ? SlixLockBitPpl : 0;
ctx->response_buffer[len++] = NFCV_NOERROR;
ctx->response_buffer[len++] = nfcv_data->sub_data.slix.pp_pointer;
ctx->response_buffer[len++] = nfcv_data->sub_data.slix.pp_condition;
ctx->response_buffer[len++] = lock_bits;
ctx->response_buffer[len++] = 0x7F; /* features LSB */
ctx->response_buffer[len++] = 0x35; /* features */
ctx->response_buffer[len++] = 0; /* features */
ctx->response_buffer[len++] = 0; /* features MSB */
nfcv_emu_send(
tx_rx, nfcv_data, ctx->response_buffer, len, ctx->response_flags, ctx->send_time);
snprintf(
nfcv_data->last_command,
sizeof(nfcv_data->last_command),
"GET_NXP_SYSTEM_INFORMATION");
handled = true;
break;
}
}
return handled;
}
void slix2_prepare(NfcVData* nfcv_data) {
FURI_LOG_D(
TAG, " Privacy pass: 0x%08lX", slix_read_be(nfcv_data->sub_data.slix.key_privacy, 4));
FURI_LOG_D(
TAG, " Destroy pass: 0x%08lX", slix_read_be(nfcv_data->sub_data.slix.key_destroy, 4));
FURI_LOG_D(TAG, " EAS pass: 0x%08lX", slix_read_be(nfcv_data->sub_data.slix.key_eas, 4));
FURI_LOG_D(
TAG,
" Privacy mode: %s",
(nfcv_data->sub_data.slix.flags & NfcVSlixDataFlagsPrivacy) ? "ON" : "OFF");
NfcVEmuProtocolCtx* ctx = nfcv_data->emu_protocol_ctx;
ctx->emu_protocol_filter = &slix2_protocol_filter;
}
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