72ca6b25e9
* SubGhz: add error protocol * WS: add error protocol * SubGhz: error processing * SubGhz: more stringent CAME protocol restrictions * SubGhz: fix header duration CAME protocol * SubGhz: delete comments * SubGhz: sync SubGhzProtocolStatus with FuriStatus * SubGhz: update documentation and bump api_version Co-authored-by: あく <alleteam@gmail.com>
456 lines
17 KiB
C
456 lines
17 KiB
C
#include "alutech_at_4n.h"
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#include "../blocks/const.h"
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#include "../blocks/decoder.h"
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#include "../blocks/encoder.h"
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#include "../blocks/generic.h"
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#include "../blocks/math.h"
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#define TAG "SubGhzProtocoAlutech_at_4n"
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#define SUBGHZ_NO_ALUTECH_AT_4N_RAINBOW_TABLE 0xFFFFFFFF
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static const SubGhzBlockConst subghz_protocol_alutech_at_4n_const = {
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.te_short = 400,
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.te_long = 800,
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.te_delta = 140,
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.min_count_bit_for_found = 72,
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};
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struct SubGhzProtocolDecoderAlutech_at_4n {
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SubGhzProtocolDecoderBase base;
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SubGhzBlockDecoder decoder;
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SubGhzBlockGeneric generic;
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uint64_t data;
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uint32_t crc;
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uint16_t header_count;
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const char* alutech_at_4n_rainbow_table_file_name;
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};
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struct SubGhzProtocolEncoderAlutech_at_4n {
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SubGhzProtocolEncoderBase base;
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SubGhzProtocolBlockEncoder encoder;
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SubGhzBlockGeneric generic;
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};
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typedef enum {
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Alutech_at_4nDecoderStepReset = 0,
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Alutech_at_4nDecoderStepCheckPreambula,
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Alutech_at_4nDecoderStepSaveDuration,
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Alutech_at_4nDecoderStepCheckDuration,
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} Alutech_at_4nDecoderStep;
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const SubGhzProtocolDecoder subghz_protocol_alutech_at_4n_decoder = {
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.alloc = subghz_protocol_decoder_alutech_at_4n_alloc,
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.free = subghz_protocol_decoder_alutech_at_4n_free,
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.feed = subghz_protocol_decoder_alutech_at_4n_feed,
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.reset = subghz_protocol_decoder_alutech_at_4n_reset,
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.get_hash_data = subghz_protocol_decoder_alutech_at_4n_get_hash_data,
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.serialize = subghz_protocol_decoder_alutech_at_4n_serialize,
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.deserialize = subghz_protocol_decoder_alutech_at_4n_deserialize,
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.get_string = subghz_protocol_decoder_alutech_at_4n_get_string,
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};
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const SubGhzProtocolEncoder subghz_protocol_alutech_at_4n_encoder = {
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.alloc = NULL,
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.free = NULL,
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.deserialize = NULL,
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.stop = NULL,
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.yield = NULL,
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};
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const SubGhzProtocol subghz_protocol_alutech_at_4n = {
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.name = SUBGHZ_PROTOCOL_ALUTECH_AT_4N_NAME,
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.type = SubGhzProtocolTypeDynamic,
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.flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable,
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.decoder = &subghz_protocol_alutech_at_4n_decoder,
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.encoder = &subghz_protocol_alutech_at_4n_encoder,
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};
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/**
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* Read bytes from rainbow table
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* @param file_name Full path to rainbow table the file
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* @param number_alutech_at_4n_magic_data number in the array
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* @return alutech_at_4n_magic_data
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*/
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static uint32_t subghz_protocol_alutech_at_4n_get_magic_data_in_file(
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const char* file_name,
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uint8_t number_alutech_at_4n_magic_data) {
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if(!strcmp(file_name, "")) return SUBGHZ_NO_ALUTECH_AT_4N_RAINBOW_TABLE;
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uint8_t buffer[sizeof(uint32_t)] = {0};
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uint32_t address = number_alutech_at_4n_magic_data * sizeof(uint32_t);
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uint32_t alutech_at_4n_magic_data = 0;
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if(subghz_keystore_raw_get_data(file_name, address, buffer, sizeof(uint32_t))) {
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for(size_t i = 0; i < sizeof(uint32_t); i++) {
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alutech_at_4n_magic_data = (alutech_at_4n_magic_data << 8) | buffer[i];
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}
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} else {
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alutech_at_4n_magic_data = SUBGHZ_NO_ALUTECH_AT_4N_RAINBOW_TABLE;
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}
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return alutech_at_4n_magic_data;
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}
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static uint8_t subghz_protocol_alutech_at_4n_crc(uint64_t data) {
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uint8_t* p = (uint8_t*)&data;
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uint8_t crc = 0xff;
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for(uint8_t y = 0; y < 8; y++) {
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crc = crc ^ p[y];
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for(uint8_t i = 0; i < 8; i++) {
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if((crc & 0x80) != 0) {
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crc <<= 1;
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crc ^= 0x31;
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} else {
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crc <<= 1;
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}
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}
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}
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return crc;
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}
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static uint8_t subghz_protocol_alutech_at_4n_decrypt_data_crc(uint8_t data) {
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uint8_t crc = data;
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for(uint8_t i = 0; i < 8; i++) {
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if((crc & 0x80) != 0) {
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crc <<= 1;
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crc ^= 0x31;
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} else {
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crc <<= 1;
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}
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}
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return ~crc;
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}
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static uint64_t subghz_protocol_alutech_at_4n_decrypt(uint64_t data, const char* file_name) {
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uint8_t* p = (uint8_t*)&data;
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uint32_t data1 = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
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uint32_t data2 = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7];
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uint32_t data3 = 0;
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uint32_t magic_data[] = {
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subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 0),
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subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 1),
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subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 2),
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subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 3),
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subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 4),
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subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 5)};
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uint32_t i = magic_data[0];
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do {
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data2 = data2 -
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((magic_data[1] + (data1 << 4)) ^ ((magic_data[2] + (data1 >> 5)) ^ (data1 + i)));
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data3 = data2 + i;
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i += magic_data[3];
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data1 =
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data1 - ((magic_data[4] + (data2 << 4)) ^ ((magic_data[5] + (data2 >> 5)) ^ data3));
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} while(i != 0);
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p[0] = (uint8_t)(data1 >> 24);
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p[1] = (uint8_t)(data1 >> 16);
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p[3] = (uint8_t)data1;
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p[4] = (uint8_t)(data2 >> 24);
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p[5] = (uint8_t)(data2 >> 16);
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p[2] = (uint8_t)(data1 >> 8);
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p[6] = (uint8_t)(data2 >> 8);
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p[7] = (uint8_t)data2;
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return data;
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}
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// static uint64_t subghz_protocol_alutech_at_4n_encrypt(uint64_t data, const char* file_name) {
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// uint8_t* p = (uint8_t*)&data;
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// uint32_t data1 = 0;
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// uint32_t data2 = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
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// uint32_t data3 = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7];
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// uint32_t magic_data[] = {
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// subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 6),
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// subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 4),
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// subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 5),
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// subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 1),
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// subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 2),
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// subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 0)};
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// do {
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// data1 = data1 + magic_data[0];
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// data2 = data2 + ((magic_data[1] + (data3 << 4)) ^
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// ((magic_data[2] + (data3 >> 5)) ^ (data1 + data3)));
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// data3 = data3 + ((magic_data[3] + (data2 << 4)) ^
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// ((magic_data[4] + (data2 >> 5)) ^ (data1 + data2)));
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// } while(data1 != magic_data[5]);
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// p[0] = (uint8_t)(data2 >> 24);
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// p[1] = (uint8_t)(data2 >> 16);
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// p[3] = (uint8_t)data2;
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// p[4] = (uint8_t)(data3 >> 24);
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// p[5] = (uint8_t)(data3 >> 16);
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// p[2] = (uint8_t)(data2 >> 8);
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// p[6] = (uint8_t)(data3 >> 8);
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// p[7] = (uint8_t)data3;
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// return data;
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// }
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void* subghz_protocol_decoder_alutech_at_4n_alloc(SubGhzEnvironment* environment) {
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SubGhzProtocolDecoderAlutech_at_4n* instance =
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malloc(sizeof(SubGhzProtocolDecoderAlutech_at_4n));
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instance->base.protocol = &subghz_protocol_alutech_at_4n;
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instance->generic.protocol_name = instance->base.protocol->name;
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instance->alutech_at_4n_rainbow_table_file_name =
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subghz_environment_get_alutech_at_4n_rainbow_table_file_name(environment);
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if(instance->alutech_at_4n_rainbow_table_file_name) {
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FURI_LOG_I(
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TAG, "Loading rainbow table from %s", instance->alutech_at_4n_rainbow_table_file_name);
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}
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return instance;
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}
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void subghz_protocol_decoder_alutech_at_4n_free(void* context) {
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furi_assert(context);
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SubGhzProtocolDecoderAlutech_at_4n* instance = context;
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instance->alutech_at_4n_rainbow_table_file_name = NULL;
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free(instance);
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}
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void subghz_protocol_decoder_alutech_at_4n_reset(void* context) {
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furi_assert(context);
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SubGhzProtocolDecoderAlutech_at_4n* instance = context;
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instance->decoder.parser_step = Alutech_at_4nDecoderStepReset;
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}
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void subghz_protocol_decoder_alutech_at_4n_feed(void* context, bool level, uint32_t duration) {
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furi_assert(context);
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SubGhzProtocolDecoderAlutech_at_4n* instance = context;
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switch(instance->decoder.parser_step) {
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case Alutech_at_4nDecoderStepReset:
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if((level) && DURATION_DIFF(duration, subghz_protocol_alutech_at_4n_const.te_short) <
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subghz_protocol_alutech_at_4n_const.te_delta) {
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instance->decoder.parser_step = Alutech_at_4nDecoderStepCheckPreambula;
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instance->header_count++;
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}
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break;
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case Alutech_at_4nDecoderStepCheckPreambula:
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if((!level) && (DURATION_DIFF(duration, subghz_protocol_alutech_at_4n_const.te_short) <
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subghz_protocol_alutech_at_4n_const.te_delta)) {
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instance->decoder.parser_step = Alutech_at_4nDecoderStepReset;
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break;
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}
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if((instance->header_count > 2) &&
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(DURATION_DIFF(duration, subghz_protocol_alutech_at_4n_const.te_short * 10) <
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subghz_protocol_alutech_at_4n_const.te_delta * 10)) {
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// Found header
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instance->decoder.parser_step = Alutech_at_4nDecoderStepSaveDuration;
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instance->decoder.decode_data = 0;
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instance->data = 0;
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instance->decoder.decode_count_bit = 0;
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} else {
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instance->decoder.parser_step = Alutech_at_4nDecoderStepReset;
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instance->header_count = 0;
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}
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break;
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case Alutech_at_4nDecoderStepSaveDuration:
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if(level) {
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instance->decoder.te_last = duration;
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instance->decoder.parser_step = Alutech_at_4nDecoderStepCheckDuration;
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}
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break;
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case Alutech_at_4nDecoderStepCheckDuration:
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if(!level) {
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if(duration >= ((uint32_t)subghz_protocol_alutech_at_4n_const.te_short * 2 +
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subghz_protocol_alutech_at_4n_const.te_delta)) {
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//add last bit
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if(DURATION_DIFF(
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instance->decoder.te_last, subghz_protocol_alutech_at_4n_const.te_short) <
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subghz_protocol_alutech_at_4n_const.te_delta) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 1);
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} else if(
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DURATION_DIFF(
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instance->decoder.te_last, subghz_protocol_alutech_at_4n_const.te_long) <
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subghz_protocol_alutech_at_4n_const.te_delta * 2) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 0);
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}
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// Found end TX
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instance->decoder.parser_step = Alutech_at_4nDecoderStepReset;
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if(instance->decoder.decode_count_bit ==
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subghz_protocol_alutech_at_4n_const.min_count_bit_for_found) {
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if(instance->generic.data != instance->data) {
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instance->generic.data = instance->data;
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instance->generic.data_count_bit = instance->decoder.decode_count_bit;
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instance->crc = instance->decoder.decode_data;
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if(instance->base.callback)
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instance->base.callback(&instance->base, instance->base.context);
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}
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instance->decoder.decode_data = 0;
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instance->data = 0;
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instance->decoder.decode_count_bit = 0;
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instance->header_count = 0;
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}
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break;
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} else if(
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(DURATION_DIFF(
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instance->decoder.te_last, subghz_protocol_alutech_at_4n_const.te_short) <
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subghz_protocol_alutech_at_4n_const.te_delta) &&
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(DURATION_DIFF(duration, subghz_protocol_alutech_at_4n_const.te_long) <
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subghz_protocol_alutech_at_4n_const.te_delta * 2)) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 1);
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if(instance->decoder.decode_count_bit == 64) {
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instance->data = instance->decoder.decode_data;
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instance->decoder.decode_data = 0;
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}
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instance->decoder.parser_step = Alutech_at_4nDecoderStepSaveDuration;
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} else if(
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(DURATION_DIFF(
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instance->decoder.te_last, subghz_protocol_alutech_at_4n_const.te_long) <
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subghz_protocol_alutech_at_4n_const.te_delta * 2) &&
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(DURATION_DIFF(duration, subghz_protocol_alutech_at_4n_const.te_short) <
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subghz_protocol_alutech_at_4n_const.te_delta)) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 0);
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if(instance->decoder.decode_count_bit == 64) {
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instance->data = instance->decoder.decode_data;
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instance->decoder.decode_data = 0;
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}
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instance->decoder.parser_step = Alutech_at_4nDecoderStepSaveDuration;
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} else {
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instance->decoder.parser_step = Alutech_at_4nDecoderStepReset;
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instance->header_count = 0;
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}
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} else {
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instance->decoder.parser_step = Alutech_at_4nDecoderStepReset;
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instance->header_count = 0;
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}
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break;
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}
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}
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/**
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* Analysis of received data
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* @param instance Pointer to a SubGhzBlockGeneric* instance
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* @param file_name Full path to rainbow table the file
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*/
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static void subghz_protocol_alutech_at_4n_remote_controller(
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SubGhzBlockGeneric* instance,
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uint8_t crc,
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const char* file_name) {
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/**
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* Message format 72bit LSB first
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* data crc
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* XXXXXXXXXXXXXXXX CC
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*
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* For analysis, you need to turn the package MSB
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* in decoded messages format
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*
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* crc1 serial cnt key
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* cc SSSSSSSS XXxx BB
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*
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* crc1 is calculated from the lower part of cnt
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* key 1=0xff, 2=0x11, 3=0x22, 4=0x33, 5=0x44
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*
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*/
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bool status = false;
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uint64_t data = subghz_protocol_blocks_reverse_key(instance->data, 64);
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crc = subghz_protocol_blocks_reverse_key(crc, 8);
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if(crc == subghz_protocol_alutech_at_4n_crc(data)) {
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data = subghz_protocol_alutech_at_4n_decrypt(data, file_name);
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status = true;
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}
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if(status && ((uint8_t)(data >> 56) ==
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subghz_protocol_alutech_at_4n_decrypt_data_crc((uint8_t)((data >> 8) & 0xFF)))) {
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instance->btn = (uint8_t)data & 0xFF;
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instance->cnt = (uint16_t)(data >> 8) & 0xFFFF;
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instance->serial = (uint32_t)(data >> 24) & 0xFFFFFFFF;
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}
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if(!status) {
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instance->btn = 0;
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instance->cnt = 0;
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instance->serial = 0;
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}
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}
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uint8_t subghz_protocol_decoder_alutech_at_4n_get_hash_data(void* context) {
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furi_assert(context);
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SubGhzProtocolDecoderAlutech_at_4n* instance = context;
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return (uint8_t)instance->crc;
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}
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SubGhzProtocolStatus subghz_protocol_decoder_alutech_at_4n_serialize(
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void* context,
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FlipperFormat* flipper_format,
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SubGhzRadioPreset* preset) {
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furi_assert(context);
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SubGhzProtocolDecoderAlutech_at_4n* instance = context;
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SubGhzProtocolStatus res =
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subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
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if((res == SubGhzProtocolStatusOk) &&
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!flipper_format_write_uint32(flipper_format, "CRC", &instance->crc, 1)) {
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FURI_LOG_E(TAG, "Unable to add CRC");
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res = SubGhzProtocolStatusErrorParserOthers;
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}
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return res;
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}
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SubGhzProtocolStatus subghz_protocol_decoder_alutech_at_4n_deserialize(
|
|
void* context,
|
|
FlipperFormat* flipper_format) {
|
|
furi_assert(context);
|
|
SubGhzProtocolDecoderAlutech_at_4n* instance = context;
|
|
SubGhzProtocolStatus ret = SubGhzProtocolStatusError;
|
|
do {
|
|
ret = subghz_block_generic_deserialize_check_count_bit(
|
|
&instance->generic,
|
|
flipper_format,
|
|
subghz_protocol_alutech_at_4n_const.min_count_bit_for_found);
|
|
if(ret != SubGhzProtocolStatusOk) {
|
|
break;
|
|
}
|
|
if(!flipper_format_rewind(flipper_format)) {
|
|
FURI_LOG_E(TAG, "Rewind error");
|
|
ret = SubGhzProtocolStatusErrorParserOthers;
|
|
break;
|
|
}
|
|
if(!flipper_format_read_uint32(flipper_format, "CRC", (uint32_t*)&instance->crc, 1)) {
|
|
FURI_LOG_E(TAG, "Missing CRC");
|
|
ret = SubGhzProtocolStatusErrorParserOthers;
|
|
break;
|
|
}
|
|
} while(false);
|
|
return ret;
|
|
}
|
|
|
|
void subghz_protocol_decoder_alutech_at_4n_get_string(void* context, FuriString* output) {
|
|
furi_assert(context);
|
|
SubGhzProtocolDecoderAlutech_at_4n* instance = context;
|
|
subghz_protocol_alutech_at_4n_remote_controller(
|
|
&instance->generic, instance->crc, instance->alutech_at_4n_rainbow_table_file_name);
|
|
uint32_t code_found_hi = instance->generic.data >> 32;
|
|
uint32_t code_found_lo = instance->generic.data & 0x00000000ffffffff;
|
|
|
|
furi_string_cat_printf(
|
|
output,
|
|
"%s %d\r\n"
|
|
"Key:0x%08lX%08lX%02X\r\n"
|
|
"Sn:0x%08lX Btn:0x%01X\r\n"
|
|
"Cnt:0x%03lX\r\n",
|
|
|
|
instance->generic.protocol_name,
|
|
instance->generic.data_count_bit,
|
|
code_found_hi,
|
|
code_found_lo,
|
|
(uint8_t)instance->crc,
|
|
instance->generic.serial,
|
|
instance->generic.btn,
|
|
instance->generic.cnt);
|
|
}
|