mirror of
https://github.com/DarkFlippers/unleashed-firmware.git
synced 2025-12-12 04:34:43 +04:00
598 lines
21 KiB
C
598 lines
21 KiB
C
#include "phoenix_v2.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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#include "../blocks/custom_btn_i.h"
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#define TAG "SubGhzProtocolPhoenixV2"
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static const SubGhzBlockConst subghz_protocol_phoenix_v2_const = {
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.te_short = 427,
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.te_long = 853,
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.te_delta = 100,
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.min_count_bit_for_found = 52,
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};
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struct SubGhzProtocolDecoderPhoenix_V2 {
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SubGhzProtocolDecoderBase base;
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SubGhzBlockDecoder decoder;
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SubGhzBlockGeneric generic;
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};
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struct SubGhzProtocolEncoderPhoenix_V2 {
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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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Phoenix_V2DecoderStepReset = 0,
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Phoenix_V2DecoderStepFoundStartBit,
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Phoenix_V2DecoderStepSaveDuration,
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Phoenix_V2DecoderStepCheckDuration,
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} Phoenix_V2DecoderStep;
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const SubGhzProtocolDecoder subghz_protocol_phoenix_v2_decoder = {
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.alloc = subghz_protocol_decoder_phoenix_v2_alloc,
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.free = subghz_protocol_decoder_phoenix_v2_free,
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.feed = subghz_protocol_decoder_phoenix_v2_feed,
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.reset = subghz_protocol_decoder_phoenix_v2_reset,
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.get_hash_data = subghz_protocol_decoder_phoenix_v2_get_hash_data,
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.serialize = subghz_protocol_decoder_phoenix_v2_serialize,
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.deserialize = subghz_protocol_decoder_phoenix_v2_deserialize,
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.get_string = subghz_protocol_decoder_phoenix_v2_get_string,
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};
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const SubGhzProtocolEncoder subghz_protocol_phoenix_v2_encoder = {
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.alloc = subghz_protocol_encoder_phoenix_v2_alloc,
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.free = subghz_protocol_encoder_phoenix_v2_free,
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.deserialize = subghz_protocol_encoder_phoenix_v2_deserialize,
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.stop = subghz_protocol_encoder_phoenix_v2_stop,
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.yield = subghz_protocol_encoder_phoenix_v2_yield,
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};
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const SubGhzProtocol subghz_protocol_phoenix_v2 = {
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.name = SUBGHZ_PROTOCOL_PHOENIX_V2_NAME,
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.type = SubGhzProtocolTypeDynamic,
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.flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable |
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SubGhzProtocolFlag_Load | SubGhzProtocolFlag_Save | SubGhzProtocolFlag_Send,
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.decoder = &subghz_protocol_phoenix_v2_decoder,
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.encoder = &subghz_protocol_phoenix_v2_encoder,
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};
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void* subghz_protocol_encoder_phoenix_v2_alloc(SubGhzEnvironment* environment) {
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UNUSED(environment);
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SubGhzProtocolEncoderPhoenix_V2* instance = malloc(sizeof(SubGhzProtocolEncoderPhoenix_V2));
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instance->base.protocol = &subghz_protocol_phoenix_v2;
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instance->generic.protocol_name = instance->base.protocol->name;
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instance->encoder.repeat = 10;
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instance->encoder.size_upload = 128;
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instance->encoder.upload = malloc(instance->encoder.size_upload * sizeof(LevelDuration));
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instance->encoder.is_running = false;
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return instance;
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}
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void subghz_protocol_encoder_phoenix_v2_free(void* context) {
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furi_assert(context);
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SubGhzProtocolEncoderPhoenix_V2* instance = context;
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free(instance->encoder.upload);
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free(instance);
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}
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// Pre define functions
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static uint16_t subghz_protocol_phoenix_v2_encrypt_counter(uint64_t full_key, uint16_t counter);
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static void subghz_protocol_phoenix_v2_check_remote_controller(SubGhzBlockGeneric* instance);
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bool subghz_protocol_phoenix_v2_create_data(
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void* context,
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FlipperFormat* flipper_format,
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uint32_t serial,
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uint16_t cnt,
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SubGhzRadioPreset* preset) {
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furi_assert(context);
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SubGhzProtocolEncoderPhoenix_V2* instance = context;
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instance->generic.btn = 0x1;
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instance->generic.serial = serial;
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instance->generic.cnt = cnt;
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instance->generic.data_count_bit = 52;
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uint64_t local_data_rev =
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(uint64_t)(((uint64_t)instance->generic.cnt << 40) |
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((uint64_t)instance->generic.btn << 32) | (uint64_t)instance->generic.serial);
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uint16_t encrypted_counter = (uint16_t)subghz_protocol_phoenix_v2_encrypt_counter(
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local_data_rev, instance->generic.cnt);
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instance->generic.data = subghz_protocol_blocks_reverse_key(
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(uint64_t)(((uint64_t)encrypted_counter << 40) | ((uint64_t)instance->generic.btn << 32) |
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(uint64_t)instance->generic.serial),
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instance->generic.data_count_bit + 4);
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return SubGhzProtocolStatusOk ==
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subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
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}
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// Get custom button code
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static uint8_t subghz_protocol_phoenix_v2_get_btn_code(void) {
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uint8_t custom_btn_id = subghz_custom_btn_get();
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uint8_t original_btn_code = subghz_custom_btn_get_original();
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uint8_t btn = original_btn_code;
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// Set custom button
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if((custom_btn_id == SUBGHZ_CUSTOM_BTN_OK) && (original_btn_code != 0)) {
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// Restore original button code
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btn = original_btn_code;
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} else if(custom_btn_id == SUBGHZ_CUSTOM_BTN_UP) {
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switch(original_btn_code) {
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case 0x1:
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btn = 0x2;
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break;
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case 0x2:
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btn = 0x1;
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break;
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case 0x4:
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btn = 0x1;
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break;
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case 0x8:
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btn = 0x1;
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break;
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case 0x3:
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btn = 0x1;
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break;
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default:
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break;
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}
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} else if(custom_btn_id == SUBGHZ_CUSTOM_BTN_DOWN) {
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switch(original_btn_code) {
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case 0x1:
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btn = 0x4;
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break;
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case 0x2:
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btn = 0x4;
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break;
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case 0x4:
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btn = 0x2;
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break;
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case 0x8:
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btn = 0x4;
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break;
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case 0x3:
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btn = 0x4;
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break;
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default:
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break;
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}
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} else if(custom_btn_id == SUBGHZ_CUSTOM_BTN_LEFT) {
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switch(original_btn_code) {
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case 0x1:
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btn = 0x8;
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break;
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case 0x2:
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btn = 0x8;
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break;
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case 0x4:
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btn = 0x8;
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break;
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case 0x8:
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btn = 0x2;
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break;
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case 0x3:
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btn = 0x8;
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break;
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default:
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break;
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}
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} else if(custom_btn_id == SUBGHZ_CUSTOM_BTN_RIGHT) {
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switch(original_btn_code) {
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case 0x1:
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btn = 0x3;
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break;
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case 0x2:
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btn = 0x3;
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break;
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case 0x4:
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btn = 0x3;
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break;
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case 0x8:
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btn = 0x3;
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break;
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case 0x3:
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btn = 0x2;
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break;
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default:
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break;
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}
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}
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return btn;
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}
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/**
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* Generating an upload from data.
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* @param instance Pointer to a SubGhzProtocolEncoderPhoenix_V2 instance
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* @return true On success
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*/
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static bool
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subghz_protocol_encoder_phoenix_v2_get_upload(SubGhzProtocolEncoderPhoenix_V2* instance) {
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furi_assert(instance);
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size_t index = 0;
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size_t size_upload = (instance->generic.data_count_bit * 2) + 2;
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if(size_upload > instance->encoder.size_upload) {
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FURI_LOG_E(TAG, "Size upload exceeds allocated encoder buffer.");
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return false;
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} else {
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instance->encoder.size_upload = size_upload;
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}
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uint8_t btn = instance->generic.btn;
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// Save original button for later use
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if(subghz_custom_btn_get_original() == 0) {
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subghz_custom_btn_set_original(btn);
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}
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// Get custom button code
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// This will override the btn variable if a custom button is set
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btn = subghz_protocol_phoenix_v2_get_btn_code();
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// Reconstruction of the data
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if(instance->generic.cnt < 0xFFFF) {
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if((instance->generic.cnt + furi_hal_subghz_get_rolling_counter_mult()) > 0xFFFF) {
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instance->generic.cnt = 0;
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} else {
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instance->generic.cnt += furi_hal_subghz_get_rolling_counter_mult();
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}
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} else if((instance->generic.cnt >= 0xFFFF) && (furi_hal_subghz_get_rolling_counter_mult() != 0)) {
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instance->generic.cnt = 0;
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}
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uint64_t local_data_rev = subghz_protocol_blocks_reverse_key(
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instance->generic.data, instance->generic.data_count_bit + 4);
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uint16_t encrypted_counter = (uint16_t)subghz_protocol_phoenix_v2_encrypt_counter(
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local_data_rev, instance->generic.cnt);
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instance->generic.data = subghz_protocol_blocks_reverse_key(
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(uint64_t)(((uint64_t)encrypted_counter << 40) | ((uint64_t)btn << 32) |
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(uint64_t)instance->generic.serial),
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instance->generic.data_count_bit + 4);
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//Send header
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instance->encoder.upload[index++] =
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level_duration_make(false, (uint32_t)subghz_protocol_phoenix_v2_const.te_short * 60);
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//Send start bit
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instance->encoder.upload[index++] =
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level_duration_make(true, (uint32_t)subghz_protocol_phoenix_v2_const.te_short * 6);
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//Send key data
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for(uint8_t i = instance->generic.data_count_bit; i > 0; i--) {
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if(!bit_read(instance->generic.data, i - 1)) {
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//send bit 1
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instance->encoder.upload[index++] =
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level_duration_make(false, (uint32_t)subghz_protocol_phoenix_v2_const.te_long);
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instance->encoder.upload[index++] =
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level_duration_make(true, (uint32_t)subghz_protocol_phoenix_v2_const.te_short);
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} else {
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//send bit 0
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instance->encoder.upload[index++] =
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level_duration_make(false, (uint32_t)subghz_protocol_phoenix_v2_const.te_short);
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instance->encoder.upload[index++] =
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level_duration_make(true, (uint32_t)subghz_protocol_phoenix_v2_const.te_long);
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}
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}
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return true;
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}
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SubGhzProtocolStatus
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subghz_protocol_encoder_phoenix_v2_deserialize(void* context, FlipperFormat* flipper_format) {
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furi_assert(context);
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SubGhzProtocolEncoderPhoenix_V2* instance = context;
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SubGhzProtocolStatus ret = SubGhzProtocolStatusError;
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do {
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ret = subghz_block_generic_deserialize_check_count_bit(
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&instance->generic,
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flipper_format,
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subghz_protocol_phoenix_v2_const.min_count_bit_for_found);
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if(ret != SubGhzProtocolStatusOk) {
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break;
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}
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//optional parameter parameter
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flipper_format_read_uint32(
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flipper_format, "Repeat", (uint32_t*)&instance->encoder.repeat, 1);
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subghz_protocol_phoenix_v2_check_remote_controller(&instance->generic);
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if(!subghz_protocol_encoder_phoenix_v2_get_upload(instance)) {
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ret = SubGhzProtocolStatusErrorEncoderGetUpload;
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break;
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}
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uint8_t key_data[sizeof(uint64_t)] = {0};
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for(size_t i = 0; i < sizeof(uint64_t); i++) {
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key_data[sizeof(uint64_t) - i - 1] = (instance->generic.data >> i * 8) & 0xFF;
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}
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if(!flipper_format_update_hex(flipper_format, "Key", key_data, sizeof(uint64_t))) {
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FURI_LOG_E(TAG, "Unable to add Key");
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break;
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}
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instance->encoder.is_running = true;
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} while(false);
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return ret;
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}
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void subghz_protocol_encoder_phoenix_v2_stop(void* context) {
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SubGhzProtocolEncoderPhoenix_V2* instance = context;
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instance->encoder.is_running = false;
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}
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LevelDuration subghz_protocol_encoder_phoenix_v2_yield(void* context) {
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SubGhzProtocolEncoderPhoenix_V2* instance = context;
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if(instance->encoder.repeat == 0 || !instance->encoder.is_running) {
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instance->encoder.is_running = false;
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return level_duration_reset();
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}
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LevelDuration ret = instance->encoder.upload[instance->encoder.front];
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if(++instance->encoder.front == instance->encoder.size_upload) {
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instance->encoder.repeat--;
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instance->encoder.front = 0;
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}
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return ret;
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}
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void* subghz_protocol_decoder_phoenix_v2_alloc(SubGhzEnvironment* environment) {
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UNUSED(environment);
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SubGhzProtocolDecoderPhoenix_V2* instance = malloc(sizeof(SubGhzProtocolDecoderPhoenix_V2));
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instance->base.protocol = &subghz_protocol_phoenix_v2;
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instance->generic.protocol_name = instance->base.protocol->name;
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return instance;
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}
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void subghz_protocol_decoder_phoenix_v2_free(void* context) {
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furi_assert(context);
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SubGhzProtocolDecoderPhoenix_V2* instance = context;
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free(instance);
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}
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void subghz_protocol_decoder_phoenix_v2_reset(void* context) {
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furi_assert(context);
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SubGhzProtocolDecoderPhoenix_V2* instance = context;
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instance->decoder.parser_step = Phoenix_V2DecoderStepReset;
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}
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void subghz_protocol_decoder_phoenix_v2_feed(void* context, bool level, uint32_t duration) {
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furi_assert(context);
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SubGhzProtocolDecoderPhoenix_V2* instance = context;
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switch(instance->decoder.parser_step) {
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case Phoenix_V2DecoderStepReset:
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if((!level) && (DURATION_DIFF(duration, subghz_protocol_phoenix_v2_const.te_short * 60) <
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subghz_protocol_phoenix_v2_const.te_delta * 30)) {
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//Found Preambula
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instance->decoder.parser_step = Phoenix_V2DecoderStepFoundStartBit;
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}
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break;
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case Phoenix_V2DecoderStepFoundStartBit:
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if(level && (DURATION_DIFF(duration, (subghz_protocol_phoenix_v2_const.te_short * 6)) <
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subghz_protocol_phoenix_v2_const.te_delta * 4)) {
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//Found start bit
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instance->decoder.parser_step = Phoenix_V2DecoderStepSaveDuration;
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instance->decoder.decode_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 = Phoenix_V2DecoderStepReset;
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}
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break;
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case Phoenix_V2DecoderStepSaveDuration:
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if(!level) {
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if(duration >= ((uint32_t)subghz_protocol_phoenix_v2_const.te_short * 10 +
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subghz_protocol_phoenix_v2_const.te_delta)) {
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instance->decoder.parser_step = Phoenix_V2DecoderStepFoundStartBit;
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if(instance->decoder.decode_count_bit ==
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subghz_protocol_phoenix_v2_const.min_count_bit_for_found) {
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instance->generic.data = instance->decoder.decode_data;
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instance->generic.data_count_bit = instance->decoder.decode_count_bit;
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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->decoder.decode_count_bit = 0;
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break;
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} else {
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instance->decoder.te_last = duration;
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instance->decoder.parser_step = Phoenix_V2DecoderStepCheckDuration;
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}
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}
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break;
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case Phoenix_V2DecoderStepCheckDuration:
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if(level) {
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if((DURATION_DIFF(
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instance->decoder.te_last, subghz_protocol_phoenix_v2_const.te_short) <
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subghz_protocol_phoenix_v2_const.te_delta) &&
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(DURATION_DIFF(duration, subghz_protocol_phoenix_v2_const.te_long) <
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subghz_protocol_phoenix_v2_const.te_delta * 3)) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 1);
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instance->decoder.parser_step = Phoenix_V2DecoderStepSaveDuration;
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} else if(
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(DURATION_DIFF(
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instance->decoder.te_last, subghz_protocol_phoenix_v2_const.te_long) <
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subghz_protocol_phoenix_v2_const.te_delta * 3) &&
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(DURATION_DIFF(duration, subghz_protocol_phoenix_v2_const.te_short) <
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subghz_protocol_phoenix_v2_const.te_delta)) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 0);
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instance->decoder.parser_step = Phoenix_V2DecoderStepSaveDuration;
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} else {
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instance->decoder.parser_step = Phoenix_V2DecoderStepReset;
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}
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} else {
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instance->decoder.parser_step = Phoenix_V2DecoderStepReset;
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}
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break;
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}
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}
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static uint16_t subghz_protocol_phoenix_v2_encrypt_counter(uint64_t full_key, uint16_t counter) {
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uint8_t xor_key1 = (uint8_t)(full_key >> 24); // First byte of serial
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uint8_t xor_key2 = (uint8_t)((full_key >> 16) & 0xFF); // Second byte of serial
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uint8_t byte2 = (uint8_t)(counter >> 8); // First counter byte
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uint8_t byte1 = (uint8_t)(counter & 0xFF); // Second counter byte
|
|
|
|
// See decrypt function before reading these comments
|
|
for(int i = 0; i < 16; i++) {
|
|
// The key to reversing the process is that the MSB of the *current* byte2
|
|
// tells us what the MSB of the *previous* byte1 was. This allows us to
|
|
// determine if the conditional XOR was applied before?.
|
|
uint8_t msb_of_prev_byte1 = byte2 & 0x80;
|
|
|
|
if(msb_of_prev_byte1 == 0) {
|
|
// reverse the XOR.
|
|
byte2 ^= xor_key2;
|
|
byte1 ^= xor_key1;
|
|
}
|
|
|
|
// Perform the bit shuffle in reverse
|
|
// Store the least significant bit (LSB) of the current byte1.
|
|
uint8_t lsb_of_current_byte1 = byte1 & 1;
|
|
|
|
byte2 = (byte2 << 1) | lsb_of_current_byte1;
|
|
byte1 = (byte1 >> 1) | msb_of_prev_byte1;
|
|
}
|
|
|
|
return (uint16_t)byte1 << 8 | byte2;
|
|
}
|
|
|
|
static uint16_t subghz_protocol_phoenix_v2_decrypt_counter(uint64_t full_key) {
|
|
uint16_t encrypted_value = (uint16_t)((full_key >> 40) & 0xFFFF);
|
|
|
|
uint8_t byte1 = (uint8_t)(encrypted_value >> 8); // First encrypted counter byte
|
|
uint8_t byte2 = (uint8_t)(encrypted_value & 0xFF); // Second encrypted counter byte
|
|
|
|
uint8_t xor_key1 = (uint8_t)(full_key >> 24); // First byte of serial
|
|
uint8_t xor_key2 = (uint8_t)((full_key >> 16) & 0xFF); // Second byte of serial
|
|
|
|
for(int i = 0; i < 16; i++) {
|
|
// Store the most significant bit (MSB) of byte1.
|
|
// The check `(msb_of_byte1 == 0)` will determine if we apply the XOR keys.
|
|
uint8_t msb_of_byte1 = byte1 & 0x80;
|
|
|
|
// Store the least significant bit (LSB) of byte2.
|
|
uint8_t lsb_of_byte2 = byte2 & 1;
|
|
|
|
// Perform a bit shuffle between the two bytes
|
|
byte2 = (byte2 >> 1) | msb_of_byte1;
|
|
byte1 = (byte1 << 1) | lsb_of_byte2;
|
|
|
|
// Conditionally apply the XOR keys based on the original MSB of byte1.
|
|
if(msb_of_byte1 == 0) {
|
|
byte1 ^= xor_key1;
|
|
// The mask `& 0x7F` clears the MSB of byte2 after the XOR.
|
|
byte2 = (byte2 ^ xor_key2) & 0x7F;
|
|
}
|
|
}
|
|
|
|
return (uint16_t)byte2 << 8 | byte1;
|
|
}
|
|
|
|
/**
|
|
* Analysis of received data
|
|
* @param instance Pointer to a SubGhzBlockGeneric* instance
|
|
*/
|
|
static void subghz_protocol_phoenix_v2_check_remote_controller(SubGhzBlockGeneric* instance) {
|
|
// 2022.08 - @Skorpionm
|
|
// 2025.07 - @xMasterX & @RocketGod-git
|
|
// Fully supported now, with button switch and add manually
|
|
//
|
|
// Key samples
|
|
// Full key example: 0xC63E01B9615720 - after subghz_protocol_blocks_reverse_key was applied
|
|
// Serial - B9615720
|
|
// Button - 01
|
|
// Encrypted -> Decrypted counters
|
|
// C63E - 025C
|
|
// BCC1 - 025D
|
|
// 3341 - 025E
|
|
// 49BE - 025F
|
|
// 99D3 - 0260
|
|
// E32C - 0261
|
|
|
|
uint64_t data_rev =
|
|
subghz_protocol_blocks_reverse_key(instance->data, instance->data_count_bit + 4);
|
|
|
|
instance->serial = data_rev & 0xFFFFFFFF;
|
|
instance->cnt = subghz_protocol_phoenix_v2_decrypt_counter(data_rev);
|
|
instance->btn = (data_rev >> 32) & 0xF;
|
|
// encrypted cnt is (data_rev >> 40) & 0xFFFF
|
|
|
|
// Save original button for later use
|
|
if(subghz_custom_btn_get_original() == 0) {
|
|
subghz_custom_btn_set_original(instance->btn);
|
|
}
|
|
subghz_custom_btn_set_max(4);
|
|
}
|
|
|
|
uint8_t subghz_protocol_decoder_phoenix_v2_get_hash_data(void* context) {
|
|
furi_assert(context);
|
|
SubGhzProtocolDecoderPhoenix_V2* instance = context;
|
|
return subghz_protocol_blocks_get_hash_data(
|
|
&instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
|
|
}
|
|
|
|
SubGhzProtocolStatus subghz_protocol_decoder_phoenix_v2_serialize(
|
|
void* context,
|
|
FlipperFormat* flipper_format,
|
|
SubGhzRadioPreset* preset) {
|
|
furi_assert(context);
|
|
SubGhzProtocolDecoderPhoenix_V2* instance = context;
|
|
return subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
|
|
}
|
|
|
|
SubGhzProtocolStatus
|
|
subghz_protocol_decoder_phoenix_v2_deserialize(void* context, FlipperFormat* flipper_format) {
|
|
furi_assert(context);
|
|
SubGhzProtocolDecoderPhoenix_V2* instance = context;
|
|
return subghz_block_generic_deserialize_check_count_bit(
|
|
&instance->generic,
|
|
flipper_format,
|
|
subghz_protocol_phoenix_v2_const.min_count_bit_for_found);
|
|
}
|
|
|
|
void subghz_protocol_decoder_phoenix_v2_get_string(void* context, FuriString* output) {
|
|
furi_assert(context);
|
|
SubGhzProtocolDecoderPhoenix_V2* instance = context;
|
|
subghz_protocol_phoenix_v2_check_remote_controller(&instance->generic);
|
|
furi_string_cat_printf(
|
|
output,
|
|
"V2 Phoenix %dbit\r\n"
|
|
"Key:%05lX%08lX\r\n"
|
|
"Sn:0x%07lX \r\n"
|
|
"Cnt: 0x%04lX\r\n"
|
|
"Btn: %X\r\n",
|
|
instance->generic.data_count_bit,
|
|
(uint32_t)(instance->generic.data >> 32) & 0xFFFFFFFF,
|
|
(uint32_t)(instance->generic.data & 0xFFFFFFFF),
|
|
instance->generic.serial,
|
|
instance->generic.cnt,
|
|
instance->generic.btn);
|
|
}
|