flipperzero-firmware/lib/lfrfid/protocols/protocol_fdx_b.c

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[FL-2529][FL-1628] New LF-RFID subsystem (#1601) * Makefile: unit tests pack * RFID: pulse joiner and its unit test * Move pulse protocol helpers to appropriate place * Drop pulse_joiner tests * Generic protocol, protocols dictionary, unit test * Protocol dict unit test * iButton: protocols dictionary * Lib: varint * Lib: profiler * Unit test: varint * rfid: worker mockup * LFRFID: em4100 unit test * Storage: file_exist function * rfid: fsk osc * rfid: generic fsk demodulator * rfid: protocol em4100 * rfid: protocol h10301 * rfid: protocol io prox xsf * Unit test: rfid protocols * rfid: new hal * rfid: raw worker * Unit test: fix error output * rfid: worker * rfid: plain c cli * fw: migrate to scons * lfrfid: full io prox support * unit test: io prox protocol * SubGHZ: move bit defines to source * FSK oscillator: level duration compability * libs: bit manipulation library * lfrfid: ioprox protocol, use bit library and new level duration method of FSK ocillator * bit lib: unit tests * Bit lib: parity tests, remove every nth bit, copy bits * Lfrfid: awid protocol * bit lib: uint16 and uint32 getters, unit tests * lfrfid: FDX-B read, draft version * Minunit: better memeq assert * bit lib: reverse, print, print regions * Protocol dict: get protocol features, get protocol validate count * lfrfid worker: improved read * lfrfid raw worker: psk support * Cli: rfid plain C cli * protocol AWID: render * protocol em4100: render * protocol h10301: render * protocol indala26: support every indala 26 scramble * Protocol IO Prox: render * Protocol FDX-B: advanced read * lfrfid: remove unused test function * lfrfid: fix os primitives * bit lib: crc16 and unit tests * FDX-B: save data * lfrfid worker: increase stream size. Alloc raw worker only when needed. * lfrfid: indala26 emulation * lfrfid: prepare to write * lfrfid: fdx-b emulation * lfrfid: awid, ioprox write * lfrfid: write t55xx w\o validation * lfrfid: better t55xx block0 handling * lfrfid: use new t5577 functions in worker * lfrfid: improve protocol description * lfrfid: write and verify * lfrfid: delete cpp cli * lfrfid: improve worker usage * lfrfid-app: step to new worker * lfrfid: old indala (I40134) load fallback * lfrfid: indala26, recover wrong synced data * lfrfid: remove old worker * lfrfid app: dummy read screen * lfrfid app: less dummy read screen * lfrfid: generic 96-bit HID protocol (covers up to HID 37-bit) * rename * lfrfid: improve indala26 read * lfrfid: generic 192-bit HID protocol (covers all HID extended) * lfrfid: TODO about HID render * lfrfid: new protocol FDX-A * lfrfid-app: correct worker stop on exit * misc fixes * lfrfid: FDX-A and HID distinguishability has been fixed. * lfrfid: decode HID size header and render it (#1612) * lfrfid: rename HID96 and HID192 to HIDProx and HIDExt * lfrfid: extra actions scene * lfrfid: decode generic HID Proximity size lazily (#1618) * lib: stream of data buffers concept * lfrfid: raw file helper * lfrfid: changed raw worker api * lfrfid: packed varint pair * lfrfid: read stream speedup * lfrfid app: show read mode * Documentation * lfrfid app: raw read gui * lfrfid app: storage check for raw read * memleak fix * review fixes * lfrfid app: read blink color * lfrfid app: reset key name after read * review fixes * lfrfid app: fix copypasted text * review fixes * lfrfid: disable debug gpio * lfrfid: card detection events * lfrfid: change validation color from magenta to green * Update core_defines. * lfrfid: prefix fdx-b id by zeroes * lfrfid: parse up to 43-bit HID Proximity keys (#1640) * Fbt: downgrade toolchain and fix PS1 * lfrfid: fix unit tests * lfrfid app: remove printf * lfrfid: indala26, use bit 55 as data * lfrfid: indala26, better brief format * lfrfid: indala26, loading fallback * lfrfid: read timing tuning Co-authored-by: James Ide <ide@users.noreply.github.com> Co-authored-by: あく <alleteam@gmail.com>
2022-08-23 15:57:39 +00:00
#include <furi.h>
#include "toolbox/level_duration.h"
#include "protocol_fdx_b.h"
#include <toolbox/manchester_decoder.h>
#include <lfrfid/tools/bit_lib.h>
#include "lfrfid_protocols.h"
#define FDX_B_ENCODED_BIT_SIZE (128)
#define FDX_B_ENCODED_BYTE_SIZE (((FDX_B_ENCODED_BIT_SIZE) / 8))
#define FDX_B_PREAMBLE_BIT_SIZE (11)
#define FDX_B_PREAMBLE_BYTE_SIZE (2)
#define FDX_B_ENCODED_BYTE_FULL_SIZE (FDX_B_ENCODED_BYTE_SIZE + FDX_B_PREAMBLE_BYTE_SIZE)
#define FDXB_DECODED_DATA_SIZE (11)
#define FDX_B_SHORT_TIME (128)
#define FDX_B_LONG_TIME (256)
#define FDX_B_JITTER_TIME (60)
#define FDX_B_SHORT_TIME_LOW (FDX_B_SHORT_TIME - FDX_B_JITTER_TIME)
#define FDX_B_SHORT_TIME_HIGH (FDX_B_SHORT_TIME + FDX_B_JITTER_TIME)
#define FDX_B_LONG_TIME_LOW (FDX_B_LONG_TIME - FDX_B_JITTER_TIME)
#define FDX_B_LONG_TIME_HIGH (FDX_B_LONG_TIME + FDX_B_JITTER_TIME)
typedef struct {
bool last_short;
bool last_level;
size_t encoded_index;
uint8_t encoded_data[FDX_B_ENCODED_BYTE_FULL_SIZE];
uint8_t data[FDXB_DECODED_DATA_SIZE];
} ProtocolFDXB;
ProtocolFDXB* protocol_fdx_b_alloc(void) {
ProtocolFDXB* protocol = malloc(sizeof(ProtocolFDXB));
return protocol;
};
void protocol_fdx_b_free(ProtocolFDXB* protocol) {
free(protocol);
};
uint8_t* protocol_fdx_b_get_data(ProtocolFDXB* proto) {
return proto->data;
};
void protocol_fdx_b_decoder_start(ProtocolFDXB* protocol) {
memset(protocol->encoded_data, 0, FDX_B_ENCODED_BYTE_FULL_SIZE);
protocol->last_short = false;
};
static bool protocol_fdx_b_can_be_decoded(ProtocolFDXB* protocol) {
bool result = false;
/*
msb lsb
0 10000000000 Header pattern. 11 bits.
11 1nnnnnnnn
20 1nnnnnnnn 38 bit (12 digit) National code.
29 1nnnnnnnn eg. 000000001008 (decimal).
38 1nnnnnnnn
47 1nnnnnncc 10 bit (3 digit) Country code.
56 1cccccccc eg. 999 (decimal).
65 1s------- 1 bit data block status flag.
74 1-------a 1 bit animal application indicator.
83 1xxxxxxxx 16 bit checksum.
92 1xxxxxxxx
101 1eeeeeeee 24 bits of extra data if present.
110 1eeeeeeee eg. $123456.
119 1eeeeeeee
*/
do {
// check 11 bits preamble
if(bit_lib_get_bits_16(protocol->encoded_data, 0, 11) != 0b10000000000) break;
// check next 11 bits preamble
if(bit_lib_get_bits_16(protocol->encoded_data, 128, 11) != 0b10000000000) break;
// check control bits
if(!bit_lib_test_parity(protocol->encoded_data, 3, 13 * 9, BitLibParityAlways1, 9)) break;
// compute checksum
uint8_t crc_data[8];
for(size_t i = 0; i < 8; i++) {
bit_lib_copy_bits(crc_data, i * 8, 8, protocol->encoded_data, 12 + 9 * i);
}
uint16_t crc_res = bit_lib_crc16(crc_data, 8, 0x1021, 0x0000, false, false, 0x0000);
// read checksum
uint16_t crc_ex = 0;
bit_lib_copy_bits((uint8_t*)&crc_ex, 8, 8, protocol->encoded_data, 84);
bit_lib_copy_bits((uint8_t*)&crc_ex, 0, 8, protocol->encoded_data, 93);
// compare checksum
if(crc_res != crc_ex) break;
result = true;
} while(false);
return result;
}
void protocol_fdx_b_decode(ProtocolFDXB* protocol) {
// remove parity
bit_lib_remove_bit_every_nth(protocol->encoded_data, 3, 13 * 9, 9);
// remove header pattern
for(size_t i = 0; i < 11; i++)
bit_lib_push_bit(protocol->encoded_data, FDX_B_ENCODED_BYTE_FULL_SIZE, 0);
// 0 nnnnnnnn
// 8 nnnnnnnn 38 bit (12 digit) National code.
// 16 nnnnnnnn eg. 000000001008 (decimal).
// 24 nnnnnnnn
// 32 nnnnnncc 10 bit (3 digit) Country code.
// 40 cccccccc eg. 999 (decimal).
// 48 s------- 1 bit data block status flag.
// 56 -------a 1 bit animal application indicator.
// 64 xxxxxxxx 16 bit checksum.
// 72 xxxxxxxx
// 80 eeeeeeee 24 bits of extra data if present.
// 88 eeeeeeee eg. $123456.
// 92 eeeeeeee
// copy data without checksum
bit_lib_copy_bits(protocol->data, 0, 64, protocol->encoded_data, 0);
bit_lib_copy_bits(protocol->data, 64, 24, protocol->encoded_data, 80);
// const BitLibRegion regions_encoded[] = {
// {'n', 0, 38},
// {'c', 38, 10},
// {'b', 48, 16},
// {'x', 64, 16},
// {'e', 80, 24},
// };
// bit_lib_print_regions(regions_encoded, 5, protocol->encoded_data, FDX_B_ENCODED_BIT_SIZE);
// const BitLibRegion regions_decoded[] = {
// {'n', 0, 38},
// {'c', 38, 10},
// {'b', 48, 16},
// {'e', 64, 24},
// };
// bit_lib_print_regions(regions_decoded, 4, protocol->data, FDXB_DECODED_DATA_SIZE * 8);
}
bool protocol_fdx_b_decoder_feed(ProtocolFDXB* protocol, bool level, uint32_t duration) {
bool result = false;
UNUSED(level);
bool pushed = false;
// Bi-Phase Manchester decoding
if(duration >= FDX_B_SHORT_TIME_LOW && duration <= FDX_B_SHORT_TIME_HIGH) {
if(protocol->last_short == false) {
protocol->last_short = true;
} else {
pushed = true;
bit_lib_push_bit(protocol->encoded_data, FDX_B_ENCODED_BYTE_FULL_SIZE, false);
protocol->last_short = false;
}
} else if(duration >= FDX_B_LONG_TIME_LOW && duration <= FDX_B_LONG_TIME_HIGH) {
if(protocol->last_short == false) {
pushed = true;
bit_lib_push_bit(protocol->encoded_data, FDX_B_ENCODED_BYTE_FULL_SIZE, true);
} else {
// reset
protocol->last_short = false;
}
} else {
// reset
protocol->last_short = false;
}
if(pushed && protocol_fdx_b_can_be_decoded(protocol)) {
protocol_fdx_b_decode(protocol);
result = true;
}
return result;
};
bool protocol_fdx_b_encoder_start(ProtocolFDXB* protocol) {
memset(protocol->encoded_data, 0, FDX_B_ENCODED_BYTE_FULL_SIZE);
bit_lib_set_bit(protocol->encoded_data, 0, 1);
for(size_t i = 0; i < 13; i++) {
bit_lib_set_bit(protocol->encoded_data, 11 + 9 * i, 1);
if(i == 8 || i == 9) continue;
if(i < 8) {
bit_lib_copy_bits(protocol->encoded_data, 12 + 9 * i, 8, protocol->data, i * 8);
} else {
bit_lib_copy_bits(protocol->encoded_data, 12 + 9 * i, 8, protocol->data, (i - 2) * 8);
}
}
uint16_t crc_res = bit_lib_crc16(protocol->data, 8, 0x1021, 0x0000, false, false, 0x0000);
bit_lib_copy_bits(protocol->encoded_data, 84, 8, (uint8_t*)&crc_res, 8);
bit_lib_copy_bits(protocol->encoded_data, 93, 8, (uint8_t*)&crc_res, 0);
protocol->encoded_index = 0;
protocol->last_short = false;
protocol->last_level = false;
return true;
};
LevelDuration protocol_fdx_b_encoder_yield(ProtocolFDXB* protocol) {
uint32_t duration;
protocol->last_level = !protocol->last_level;
bool bit = bit_lib_get_bit(protocol->encoded_data, protocol->encoded_index);
// Bi-Phase Manchester encoder
if(bit) {
// one long pulse for 1
duration = FDX_B_LONG_TIME / 8;
bit_lib_increment_index(protocol->encoded_index, FDX_B_ENCODED_BIT_SIZE);
} else {
// two short pulses for 0
duration = FDX_B_SHORT_TIME / 8;
if(protocol->last_short) {
bit_lib_increment_index(protocol->encoded_index, FDX_B_ENCODED_BIT_SIZE);
protocol->last_short = false;
} else {
protocol->last_short = true;
}
}
return level_duration_make(protocol->last_level, duration);
};
// 0 nnnnnnnn
// 8 nnnnnnnn 38 bit (12 digit) National code.
// 16 nnnnnnnn eg. 000000001008 (decimal).
// 24 nnnnnnnn
// 32 nnnnnnnn 10 bit (3 digit) Country code.
// 40 cccccccc eg. 999 (decimal).
// 48 s------- 1 bit data block status flag.
// 56 -------a 1 bit animal application indicator.
// 64 eeeeeeee 24 bits of extra data if present.
// 72 eeeeeeee eg. $123456.
// 80 eeeeeeee
static uint64_t protocol_fdx_b_get_national_code(const uint8_t* data) {
uint64_t national_code = bit_lib_get_bits_32(data, 0, 32);
national_code = national_code << 32;
national_code |= bit_lib_get_bits_32(data, 32, 6) << (32 - 6);
bit_lib_reverse_bits((uint8_t*)&national_code, 0, 64);
return national_code;
}
static uint16_t protocol_fdx_b_get_country_code(const uint8_t* data) {
uint16_t country_code = bit_lib_get_bits_16(data, 38, 10) << 6;
bit_lib_reverse_bits((uint8_t*)&country_code, 0, 16);
return country_code;
}
static bool protocol_fdx_b_get_temp(const uint8_t* data, float* temp) {
uint32_t extended = bit_lib_get_bits_32(data, 64, 24) << 8;
bit_lib_reverse_bits((uint8_t*)&extended, 0, 32);
uint8_t ex_parity = (extended & 0x100) >> 8;
uint8_t ex_temperature = extended & 0xff;
uint8_t ex_calc_parity = bit_lib_test_parity_32(ex_temperature, BitLibParityOdd);
bool ex_temperature_present = (ex_calc_parity == ex_parity) && !(extended & 0xe00);
if(ex_temperature_present) {
float temperature_f = 74 + ex_temperature * 0.2;
*temp = temperature_f;
return true;
} else {
return false;
}
}
void protocol_fdx_b_render_data(ProtocolFDXB* protocol, string_t result) {
// 38 bits of national code
uint64_t national_code = protocol_fdx_b_get_national_code(protocol->data);
// 10 bit of country code
uint16_t country_code = protocol_fdx_b_get_country_code(protocol->data);
bool block_status = bit_lib_get_bit(protocol->data, 48);
bool rudi_bit = bit_lib_get_bit(protocol->data, 49);
uint8_t reserved = bit_lib_get_bits(protocol->data, 50, 5);
uint8_t user_info = bit_lib_get_bits(protocol->data, 55, 5);
uint8_t replacement_number = bit_lib_get_bits(protocol->data, 60, 3);
bool animal_flag = bit_lib_get_bit(protocol->data, 63);
string_printf(result, "ID: %03u-%012llu\r\n", country_code, national_code);
string_cat_printf(result, "Animal: %s, ", animal_flag ? "Yes" : "No");
float temperature;
if(protocol_fdx_b_get_temp(protocol->data, &temperature)) {
float temperature_c = (temperature - 32) / 1.8;
string_cat_printf(
result, "T: %.2fF, %.2fC\r\n", (double)temperature, (double)temperature_c);
} else {
string_cat_printf(result, "T: ---\r\n");
}
string_cat_printf(
result,
"Bits: %X-%X-%X-%X-%X",
block_status,
rudi_bit,
reserved,
user_info,
replacement_number);
};
void protocol_fdx_b_render_brief_data(ProtocolFDXB* protocol, string_t result) {
// 38 bits of national code
uint64_t national_code = protocol_fdx_b_get_national_code(protocol->data);
// 10 bit of country code
uint16_t country_code = protocol_fdx_b_get_country_code(protocol->data);
bool animal_flag = bit_lib_get_bit(protocol->data, 63);
string_printf(result, "ID: %03u-%012llu\r\n", country_code, national_code);
string_cat_printf(result, "Animal: %s, ", animal_flag ? "Yes" : "No");
float temperature;
if(protocol_fdx_b_get_temp(protocol->data, &temperature)) {
float temperature_c = (temperature - 32) / 1.8;
string_cat_printf(result, "T: %.2fC", (double)temperature_c);
} else {
string_cat_printf(result, "T: ---");
}
};
bool protocol_fdx_b_write_data(ProtocolFDXB* protocol, void* data) {
LFRFIDWriteRequest* request = (LFRFIDWriteRequest*)data;
bool result = false;
protocol_fdx_b_encoder_start(protocol);
if(request->write_type == LFRFIDWriteTypeT5577) {
request->t5577.block[0] = LFRFID_T5577_MODULATION_DIPHASE | LFRFID_T5577_BITRATE_RF_32 |
(4 << LFRFID_T5577_MAXBLOCK_SHIFT);
request->t5577.block[1] = bit_lib_get_bits_32(protocol->encoded_data, 0, 32);
request->t5577.block[2] = bit_lib_get_bits_32(protocol->encoded_data, 32, 32);
request->t5577.block[3] = bit_lib_get_bits_32(protocol->encoded_data, 64, 32);
request->t5577.block[4] = bit_lib_get_bits_32(protocol->encoded_data, 96, 32);
request->t5577.blocks_to_write = 5;
result = true;
}
return result;
};
const ProtocolBase protocol_fdx_b = {
.name = "FDX-B",
.manufacturer = "ISO",
.data_size = FDXB_DECODED_DATA_SIZE,
.features = LFRFIDFeatureASK,
.validate_count = 3,
.alloc = (ProtocolAlloc)protocol_fdx_b_alloc,
.free = (ProtocolFree)protocol_fdx_b_free,
.get_data = (ProtocolGetData)protocol_fdx_b_get_data,
.decoder =
{
.start = (ProtocolDecoderStart)protocol_fdx_b_decoder_start,
.feed = (ProtocolDecoderFeed)protocol_fdx_b_decoder_feed,
},
.encoder =
{
.start = (ProtocolEncoderStart)protocol_fdx_b_encoder_start,
.yield = (ProtocolEncoderYield)protocol_fdx_b_encoder_yield,
},
.render_data = (ProtocolRenderData)protocol_fdx_b_render_data,
.render_brief_data = (ProtocolRenderData)protocol_fdx_b_render_brief_data,
.write_data = (ProtocolWriteData)protocol_fdx_b_write_data,
};