3360f818a1
* Adding checks for get_upload functions Almost in every protocol, function which generates upload might fail and return false. But we don't check this result, which might end up sending random memory contents to the air. * Format sources and fix crash on ivalid bit count in chamberlain Co-authored-by: あく <alleteam@gmail.com>
335 lines
12 KiB
C
335 lines
12 KiB
C
#include "gate_tx.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 "SubGhzProtocolGateTx"
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static const SubGhzBlockConst subghz_protocol_gate_tx_const = {
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.te_short = 350,
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.te_long = 700,
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.te_delta = 100,
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.min_count_bit_for_found = 24,
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};
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struct SubGhzProtocolDecoderGateTx {
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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 SubGhzProtocolEncoderGateTx {
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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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GateTXDecoderStepReset = 0,
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GateTXDecoderStepFoundStartBit,
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GateTXDecoderStepSaveDuration,
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GateTXDecoderStepCheckDuration,
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} GateTXDecoderStep;
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const SubGhzProtocolDecoder subghz_protocol_gate_tx_decoder = {
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.alloc = subghz_protocol_decoder_gate_tx_alloc,
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.free = subghz_protocol_decoder_gate_tx_free,
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.feed = subghz_protocol_decoder_gate_tx_feed,
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.reset = subghz_protocol_decoder_gate_tx_reset,
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.get_hash_data = subghz_protocol_decoder_gate_tx_get_hash_data,
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.serialize = subghz_protocol_decoder_gate_tx_serialize,
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.deserialize = subghz_protocol_decoder_gate_tx_deserialize,
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.get_string = subghz_protocol_decoder_gate_tx_get_string,
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};
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const SubGhzProtocolEncoder subghz_protocol_gate_tx_encoder = {
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.alloc = subghz_protocol_encoder_gate_tx_alloc,
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.free = subghz_protocol_encoder_gate_tx_free,
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.deserialize = subghz_protocol_encoder_gate_tx_deserialize,
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.stop = subghz_protocol_encoder_gate_tx_stop,
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.yield = subghz_protocol_encoder_gate_tx_yield,
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};
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const SubGhzProtocol subghz_protocol_gate_tx = {
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.name = SUBGHZ_PROTOCOL_GATE_TX_NAME,
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.type = SubGhzProtocolTypeStatic,
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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_gate_tx_decoder,
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.encoder = &subghz_protocol_gate_tx_encoder,
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};
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void* subghz_protocol_encoder_gate_tx_alloc(SubGhzEnvironment* environment) {
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UNUSED(environment);
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SubGhzProtocolEncoderGateTx* instance = malloc(sizeof(SubGhzProtocolEncoderGateTx));
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instance->base.protocol = &subghz_protocol_gate_tx;
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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 = 52; //max 24bit*2 + 2 (start, stop)
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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_gate_tx_free(void* context) {
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furi_assert(context);
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SubGhzProtocolEncoderGateTx* instance = context;
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free(instance->encoder.upload);
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free(instance);
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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 SubGhzProtocolEncoderGateTx instance
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* @return true On success
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*/
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static bool subghz_protocol_encoder_gate_tx_get_upload(SubGhzProtocolEncoderGateTx* 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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//Send header
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instance->encoder.upload[index++] =
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level_duration_make(false, (uint32_t)subghz_protocol_gate_tx_const.te_short * 49);
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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_gate_tx_const.te_long);
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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_gate_tx_const.te_long);
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instance->encoder.upload[index++] =
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level_duration_make(true, (uint32_t)subghz_protocol_gate_tx_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_gate_tx_const.te_short);
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instance->encoder.upload[index++] =
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level_duration_make(true, (uint32_t)subghz_protocol_gate_tx_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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bool subghz_protocol_encoder_gate_tx_deserialize(void* context, FlipperFormat* flipper_format) {
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furi_assert(context);
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SubGhzProtocolEncoderGateTx* instance = context;
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bool res = false;
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do {
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if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
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FURI_LOG_E(TAG, "Deserialize error");
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break;
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}
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if(instance->generic.data_count_bit !=
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subghz_protocol_gate_tx_const.min_count_bit_for_found) {
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FURI_LOG_E(TAG, "Wrong number of bits in key");
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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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if(!subghz_protocol_encoder_gate_tx_get_upload(instance)) break;
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instance->encoder.is_running = true;
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res = true;
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} while(false);
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return res;
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}
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void subghz_protocol_encoder_gate_tx_stop(void* context) {
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SubGhzProtocolEncoderGateTx* instance = context;
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instance->encoder.is_running = false;
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}
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LevelDuration subghz_protocol_encoder_gate_tx_yield(void* context) {
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SubGhzProtocolEncoderGateTx* 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_gate_tx_alloc(SubGhzEnvironment* environment) {
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UNUSED(environment);
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SubGhzProtocolDecoderGateTx* instance = malloc(sizeof(SubGhzProtocolDecoderGateTx));
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instance->base.protocol = &subghz_protocol_gate_tx;
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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_gate_tx_free(void* context) {
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furi_assert(context);
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SubGhzProtocolDecoderGateTx* instance = context;
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free(instance);
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}
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void subghz_protocol_decoder_gate_tx_reset(void* context) {
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furi_assert(context);
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SubGhzProtocolDecoderGateTx* instance = context;
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instance->decoder.parser_step = GateTXDecoderStepReset;
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}
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void subghz_protocol_decoder_gate_tx_feed(void* context, bool level, uint32_t duration) {
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furi_assert(context);
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SubGhzProtocolDecoderGateTx* instance = context;
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switch(instance->decoder.parser_step) {
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case GateTXDecoderStepReset:
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if((!level) && (DURATION_DIFF(duration, subghz_protocol_gate_tx_const.te_short * 47) <
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subghz_protocol_gate_tx_const.te_delta * 47)) {
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//Found Preambula
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instance->decoder.parser_step = GateTXDecoderStepFoundStartBit;
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}
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break;
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case GateTXDecoderStepFoundStartBit:
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if(level && ((DURATION_DIFF(duration, subghz_protocol_gate_tx_const.te_long) <
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subghz_protocol_gate_tx_const.te_delta * 3))) {
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//Found start bit
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instance->decoder.parser_step = GateTXDecoderStepSaveDuration;
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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 = GateTXDecoderStepReset;
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}
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break;
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case GateTXDecoderStepSaveDuration:
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if(!level) {
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if(duration >= ((uint32_t)subghz_protocol_gate_tx_const.te_short * 10 +
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subghz_protocol_gate_tx_const.te_delta)) {
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instance->decoder.parser_step = GateTXDecoderStepFoundStartBit;
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if(instance->decoder.decode_count_bit >=
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subghz_protocol_gate_tx_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 = GateTXDecoderStepCheckDuration;
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}
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}
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break;
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case GateTXDecoderStepCheckDuration:
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if(level) {
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if((DURATION_DIFF(instance->decoder.te_last, subghz_protocol_gate_tx_const.te_short) <
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subghz_protocol_gate_tx_const.te_delta) &&
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(DURATION_DIFF(duration, subghz_protocol_gate_tx_const.te_long) <
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subghz_protocol_gate_tx_const.te_delta * 3)) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 0);
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instance->decoder.parser_step = GateTXDecoderStepSaveDuration;
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} else if(
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(DURATION_DIFF(instance->decoder.te_last, subghz_protocol_gate_tx_const.te_long) <
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subghz_protocol_gate_tx_const.te_delta * 3) &&
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(DURATION_DIFF(duration, subghz_protocol_gate_tx_const.te_short) <
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subghz_protocol_gate_tx_const.te_delta)) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 1);
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instance->decoder.parser_step = GateTXDecoderStepSaveDuration;
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} else {
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instance->decoder.parser_step = GateTXDecoderStepReset;
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}
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} else {
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instance->decoder.parser_step = GateTXDecoderStepReset;
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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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*/
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static void subghz_protocol_gate_tx_check_remote_controller(SubGhzBlockGeneric* instance) {
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uint32_t code_found_reverse =
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subghz_protocol_blocks_reverse_key(instance->data, instance->data_count_bit);
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instance->serial = (code_found_reverse & 0xFF) << 12 |
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((code_found_reverse >> 8) & 0xFF) << 4 |
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((code_found_reverse >> 20) & 0x0F);
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instance->btn = ((code_found_reverse >> 16) & 0x0F);
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}
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uint8_t subghz_protocol_decoder_gate_tx_get_hash_data(void* context) {
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furi_assert(context);
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SubGhzProtocolDecoderGateTx* instance = context;
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return subghz_protocol_blocks_get_hash_data(
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&instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
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}
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bool subghz_protocol_decoder_gate_tx_serialize(
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void* context,
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FlipperFormat* flipper_format,
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SubGhzPresetDefinition* preset) {
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furi_assert(context);
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SubGhzProtocolDecoderGateTx* instance = context;
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return subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
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}
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bool subghz_protocol_decoder_gate_tx_deserialize(void* context, FlipperFormat* flipper_format) {
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furi_assert(context);
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SubGhzProtocolDecoderGateTx* instance = context;
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bool ret = false;
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do {
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if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
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break;
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}
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if(instance->generic.data_count_bit !=
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subghz_protocol_gate_tx_const.min_count_bit_for_found) {
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FURI_LOG_E(TAG, "Wrong number of bits in key");
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break;
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}
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ret = true;
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} while(false);
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return ret;
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}
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void subghz_protocol_decoder_gate_tx_get_string(void* context, string_t output) {
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furi_assert(context);
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SubGhzProtocolDecoderGateTx* instance = context;
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subghz_protocol_gate_tx_check_remote_controller(&instance->generic);
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string_cat_printf(
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output,
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"%s %dbit\r\n"
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"Key:%06lX\r\n"
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"Sn:%05lX Btn:%lX\r\n",
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instance->generic.protocol_name,
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instance->generic.data_count_bit,
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(uint32_t)(instance->generic.data & 0xFFFFFF),
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instance->generic.serial,
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instance->generic.btn);
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}
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