mirror of
https://github.com/DarkFlippers/unleashed-firmware
synced 2024-12-26 20:53:07 +00:00
267 lines
No EOL
9.2 KiB
C
267 lines
No EOL
9.2 KiB
C
#include <furi.h>
|
|
#include <toolbox/protocols/protocol.h>
|
|
#include <lfrfid/tools/bit_lib.h>
|
|
#include "lfrfid_protocols.h"
|
|
|
|
#define KERI_PREAMBLE_BIT_SIZE (33)
|
|
#define KERI_PREAMBLE_DATA_SIZE (5)
|
|
|
|
#define KERI_ENCODED_BIT_SIZE (64)
|
|
#define KERI_ENCODED_DATA_SIZE (((KERI_ENCODED_BIT_SIZE) / 8) + KERI_PREAMBLE_DATA_SIZE)
|
|
#define KERI_ENCODED_DATA_LAST ((KERI_ENCODED_BIT_SIZE) / 8)
|
|
|
|
#define KERI_DECODED_BIT_SIZE (28)
|
|
#define KERI_DECODED_DATA_SIZE (4)
|
|
|
|
#define KERI_US_PER_BIT (255)
|
|
#define KERI_ENCODER_PULSES_PER_BIT (16)
|
|
|
|
typedef struct {
|
|
uint8_t data_index;
|
|
uint8_t bit_clock_index;
|
|
bool last_bit;
|
|
bool current_polarity;
|
|
bool pulse_phase;
|
|
} ProtocolKeriEncoder;
|
|
|
|
typedef struct {
|
|
uint8_t encoded_data[KERI_ENCODED_DATA_SIZE];
|
|
uint8_t negative_encoded_data[KERI_ENCODED_DATA_SIZE];
|
|
uint8_t corrupted_encoded_data[KERI_ENCODED_DATA_SIZE];
|
|
uint8_t corrupted_negative_encoded_data[KERI_ENCODED_DATA_SIZE];
|
|
|
|
uint8_t data[KERI_DECODED_DATA_SIZE];
|
|
ProtocolKeriEncoder encoder;
|
|
} ProtocolKeri;
|
|
|
|
ProtocolKeri* protocol_keri_alloc(void) {
|
|
ProtocolKeri* protocol = malloc(sizeof(ProtocolKeri));
|
|
return protocol;
|
|
};
|
|
|
|
void protocol_keri_free(ProtocolKeri* protocol) {
|
|
free(protocol);
|
|
};
|
|
|
|
uint8_t* protocol_keri_get_data(ProtocolKeri* protocol) {
|
|
return protocol->data;
|
|
};
|
|
|
|
void protocol_keri_decoder_start(ProtocolKeri* protocol) {
|
|
memset(protocol->encoded_data, 0, KERI_ENCODED_DATA_SIZE);
|
|
memset(protocol->negative_encoded_data, 0, KERI_ENCODED_DATA_SIZE);
|
|
memset(protocol->corrupted_encoded_data, 0, KERI_ENCODED_DATA_SIZE);
|
|
memset(protocol->corrupted_negative_encoded_data, 0, KERI_ENCODED_DATA_SIZE);
|
|
};
|
|
|
|
static bool protocol_keri_check_preamble(uint8_t* data, size_t bit_index) {
|
|
// Preamble 11100000 00000000 00000000 00000000 1
|
|
if(*(uint32_t*)&data[bit_index / 8] != 0b00000000000000000000000011100000) return false;
|
|
if(bit_lib_get_bit(data, bit_index + 32) != 1) return false;
|
|
return true;
|
|
}
|
|
|
|
static bool protocol_keri_can_be_decoded(uint8_t* data) {
|
|
if(!protocol_keri_check_preamble(data, 0)) return false;
|
|
if(!protocol_keri_check_preamble(data, 64)) return false;
|
|
///if(bit_lib_get_bit(data, 61) != 0) return false;
|
|
//if(bit_lib_get_bit(data, 60) != 0) return false;
|
|
return true;
|
|
}
|
|
|
|
static bool protocol_keri_decoder_feed_internal(bool polarity, uint32_t time, uint8_t* data) {
|
|
time += (KERI_US_PER_BIT / 2);
|
|
|
|
size_t bit_count = (time / KERI_US_PER_BIT);
|
|
bool result = false;
|
|
|
|
if(bit_count < KERI_ENCODED_BIT_SIZE) {
|
|
for(size_t i = 0; i < bit_count; i++) {
|
|
bit_lib_push_bit(data, KERI_ENCODED_DATA_SIZE, polarity);
|
|
if(protocol_keri_can_be_decoded(data)) {
|
|
result = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static void protocol_keri_descramble(uint32_t* fc, uint32_t* cn, uint32_t* internal_id) {
|
|
const uint8_t card_to_id[] = {255, 255, 255, 255, 13, 12, 20, 5, 16, 6, 21,
|
|
17, 8, 255, 0, 7, 10, 15, 255, 11, 4, 1,
|
|
255, 18, 255, 19, 2, 14, 3, 9, 255, 255};
|
|
|
|
const uint8_t card_to_fc[] = {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
|
|
255, 255, 0, 255, 255, 255, 255, 2, 255, 255, 255,
|
|
3, 255, 4, 255, 255, 255, 255, 255, 1, 255};
|
|
|
|
*fc = 0;
|
|
*cn = 0;
|
|
for(uint8_t card_idx = 0; card_idx < 32; card_idx++) {
|
|
bool bit = (*internal_id >> card_idx) & 1;
|
|
// Card ID
|
|
if(card_to_id[card_idx] < 32) {
|
|
*cn = *cn | (bit << card_to_id[card_idx]);
|
|
}
|
|
// Card FC
|
|
if(card_to_fc[card_idx] < 32) {
|
|
*fc = *fc | (bit << card_to_fc[card_idx]);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void protocol_keri_decoder_save(uint8_t* data_to, const uint8_t* data_from) {
|
|
uint32_t id = bit_lib_get_bits_32(data_from, 32, 32);
|
|
data_to[3] = (uint8_t)id;
|
|
data_to[2] = (uint8_t)(id >>= 8);
|
|
data_to[1] = (uint8_t)(id >>= 8);
|
|
data_to[0] = (uint8_t)(id >>= 8);
|
|
}
|
|
|
|
bool protocol_keri_decoder_feed(ProtocolKeri* protocol, bool level, uint32_t duration) {
|
|
bool result = false;
|
|
|
|
if(duration > (KERI_US_PER_BIT / 2)) {
|
|
if(protocol_keri_decoder_feed_internal(level, duration, protocol->encoded_data)) {
|
|
protocol_keri_decoder_save(protocol->data, protocol->encoded_data);
|
|
result = true;
|
|
return result;
|
|
}
|
|
|
|
if(protocol_keri_decoder_feed_internal(!level, duration, protocol->negative_encoded_data)) {
|
|
protocol_keri_decoder_save(protocol->data, protocol->negative_encoded_data);
|
|
result = true;
|
|
return result;
|
|
}
|
|
}
|
|
|
|
if(duration > (KERI_US_PER_BIT / 4)) {
|
|
// Try to decode wrong phase synced data
|
|
if(level) {
|
|
duration += 120;
|
|
} else {
|
|
if(duration > 120) {
|
|
duration -= 120;
|
|
}
|
|
}
|
|
|
|
if(protocol_keri_decoder_feed_internal(level, duration, protocol->corrupted_encoded_data)) {
|
|
protocol_keri_decoder_save(protocol->data, protocol->corrupted_encoded_data);
|
|
|
|
result = true;
|
|
return result;
|
|
}
|
|
|
|
if(protocol_keri_decoder_feed_internal(
|
|
!level, duration, protocol->corrupted_negative_encoded_data)) {
|
|
protocol_keri_decoder_save(protocol->data, protocol->corrupted_negative_encoded_data);
|
|
|
|
result = true;
|
|
return result;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
};
|
|
|
|
bool protocol_keri_encoder_start(ProtocolKeri* protocol) {
|
|
memset(protocol->encoded_data, 0, KERI_ENCODED_DATA_SIZE);
|
|
*(uint32_t*)&protocol->encoded_data[0] = 0b00000000000000000000000011100000;
|
|
bit_lib_copy_bits(protocol->encoded_data, 32, 32, protocol->data, 0);
|
|
bit_lib_set_bits(protocol->encoded_data, 32, 1, 1);
|
|
|
|
protocol->encoder.last_bit =
|
|
bit_lib_get_bit(protocol->encoded_data, KERI_ENCODED_BIT_SIZE - 1);
|
|
protocol->encoder.data_index = 0;
|
|
protocol->encoder.current_polarity = true;
|
|
protocol->encoder.pulse_phase = true;
|
|
protocol->encoder.bit_clock_index = 0;
|
|
|
|
return true;
|
|
};
|
|
|
|
LevelDuration protocol_keri_encoder_yield(ProtocolKeri* protocol) {
|
|
LevelDuration level_duration;
|
|
ProtocolKeriEncoder* encoder = &protocol->encoder;
|
|
|
|
if(encoder->pulse_phase) {
|
|
level_duration = level_duration_make(encoder->current_polarity, 1);
|
|
encoder->pulse_phase = false;
|
|
} else {
|
|
level_duration = level_duration_make(!encoder->current_polarity, 1);
|
|
encoder->pulse_phase = true;
|
|
|
|
encoder->bit_clock_index++;
|
|
if(encoder->bit_clock_index >= KERI_ENCODER_PULSES_PER_BIT) {
|
|
encoder->bit_clock_index = 0;
|
|
|
|
bool current_bit = bit_lib_get_bit(protocol->encoded_data, encoder->data_index);
|
|
|
|
if(current_bit != encoder->last_bit) {
|
|
encoder->current_polarity = !encoder->current_polarity;
|
|
}
|
|
|
|
encoder->last_bit = current_bit;
|
|
|
|
bit_lib_increment_index(encoder->data_index, KERI_ENCODED_BIT_SIZE);
|
|
}
|
|
}
|
|
|
|
return level_duration;
|
|
};
|
|
|
|
void protocol_keri_render_data(ProtocolKeri* protocol, FuriString* result) {
|
|
uint32_t data = bit_lib_get_bits_32(protocol->data, 0, 32);
|
|
uint32_t internal_id = data & 0x7FFFFFFF;
|
|
uint32_t fc = 0;
|
|
uint32_t cn = 0;
|
|
protocol_keri_descramble(&fc, &cn, &data);
|
|
furi_string_printf(result, "Internal ID: %u\r\nFC: %u, Card: %u\r\n", internal_id, fc, cn);
|
|
}
|
|
|
|
bool protocol_keri_write_data(ProtocolKeri* protocol, void* data) {
|
|
LFRFIDWriteRequest* request = (LFRFIDWriteRequest*)data;
|
|
bool result = false;
|
|
|
|
// Start bit should be always set
|
|
protocol->data[0] |= (1 << 7);
|
|
protocol_keri_encoder_start(protocol);
|
|
|
|
if(request->write_type == LFRFIDWriteTypeT5577) {
|
|
request->t5577.block[0] = LFRFID_T5577_TESTMODE_DISABLED | LFRFID_T5577_X_MODE |
|
|
LFRFID_T5577_MODULATION_PSK1 | LFRFID_T5577_PSKCF_RF_2 |
|
|
(2 << LFRFID_T5577_MAXBLOCK_SHIFT);
|
|
request->t5577.block[0] |= 0xF << 18;
|
|
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.blocks_to_write = 3;
|
|
result = true;
|
|
}
|
|
return result;
|
|
};
|
|
|
|
const ProtocolBase protocol_keri = {
|
|
.name = "Keri",
|
|
.manufacturer = "Keri",
|
|
.data_size = KERI_DECODED_DATA_SIZE,
|
|
.features = LFRFIDFeaturePSK,
|
|
.validate_count = 6,
|
|
.alloc = (ProtocolAlloc)protocol_keri_alloc,
|
|
.free = (ProtocolFree)protocol_keri_free,
|
|
.get_data = (ProtocolGetData)protocol_keri_get_data,
|
|
.decoder =
|
|
{
|
|
.start = (ProtocolDecoderStart)protocol_keri_decoder_start,
|
|
.feed = (ProtocolDecoderFeed)protocol_keri_decoder_feed,
|
|
},
|
|
.encoder =
|
|
{
|
|
.start = (ProtocolEncoderStart)protocol_keri_encoder_start,
|
|
.yield = (ProtocolEncoderYield)protocol_keri_encoder_yield,
|
|
},
|
|
.render_data = (ProtocolRenderData)protocol_keri_render_data,
|
|
.render_brief_data = (ProtocolRenderData)protocol_keri_render_data,
|
|
.write_data = (ProtocolWriteData)protocol_keri_write_data,
|
|
}; |