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unleashed-firmware/lib/subghz/protocols/intertechno_v3.c
Max Lapan 3360f818a1
Subghz: Adding checks for get_upload functions (#1704) 
* 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>
2022-09-20 14:29:10 +09:00

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#include "intertechno_v3.h"
#include "../blocks/const.h"
#include "../blocks/decoder.h"
#include "../blocks/encoder.h"
#include "../blocks/generic.h"
#include "../blocks/math.h"
#define TAG "SubGhzProtocolIntertechnoV3"
#define CH_PATTERN "%c%c%c%c"
#define CNT_TO_CH(ch) \
(ch & 0x8 ? '1' : '0'), (ch & 0x4 ? '1' : '0'), (ch & 0x2 ? '1' : '0'), (ch & 0x1 ? '1' : '0')
#define INTERTECHNO_V3_DIMMING_COUNT_BIT 36
static const SubGhzBlockConst subghz_protocol_intertechno_v3_const = {
.te_short = 275,
.te_long = 1375,
.te_delta = 150,
.min_count_bit_for_found = 32,
};
struct SubGhzProtocolDecoderIntertechno_V3 {
SubGhzProtocolDecoderBase base;
SubGhzBlockDecoder decoder;
SubGhzBlockGeneric generic;
};
struct SubGhzProtocolEncoderIntertechno_V3 {
SubGhzProtocolEncoderBase base;
SubGhzProtocolBlockEncoder encoder;
SubGhzBlockGeneric generic;
};
typedef enum {
IntertechnoV3DecoderStepReset = 0,
IntertechnoV3DecoderStepStartSync,
IntertechnoV3DecoderStepFoundSync,
IntertechnoV3DecoderStepStartDuration,
IntertechnoV3DecoderStepSaveDuration,
IntertechnoV3DecoderStepCheckDuration,
IntertechnoV3DecoderStepEndDuration,
} IntertechnoV3DecoderStep;
const SubGhzProtocolDecoder subghz_protocol_intertechno_v3_decoder = {
.alloc = subghz_protocol_decoder_intertechno_v3_alloc,
.free = subghz_protocol_decoder_intertechno_v3_free,
.feed = subghz_protocol_decoder_intertechno_v3_feed,
.reset = subghz_protocol_decoder_intertechno_v3_reset,
.get_hash_data = subghz_protocol_decoder_intertechno_v3_get_hash_data,
.serialize = subghz_protocol_decoder_intertechno_v3_serialize,
.deserialize = subghz_protocol_decoder_intertechno_v3_deserialize,
.get_string = subghz_protocol_decoder_intertechno_v3_get_string,
};
const SubGhzProtocolEncoder subghz_protocol_intertechno_v3_encoder = {
.alloc = subghz_protocol_encoder_intertechno_v3_alloc,
.free = subghz_protocol_encoder_intertechno_v3_free,
.deserialize = subghz_protocol_encoder_intertechno_v3_deserialize,
.stop = subghz_protocol_encoder_intertechno_v3_stop,
.yield = subghz_protocol_encoder_intertechno_v3_yield,
};
const SubGhzProtocol subghz_protocol_intertechno_v3 = {
.name = SUBGHZ_PROTOCOL_INTERTECHNO_V3_NAME,
.type = SubGhzProtocolTypeStatic,
.flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_315 | SubGhzProtocolFlag_868 |
SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable | SubGhzProtocolFlag_Load |
SubGhzProtocolFlag_Save | SubGhzProtocolFlag_Send,
.decoder = &subghz_protocol_intertechno_v3_decoder,
.encoder = &subghz_protocol_intertechno_v3_encoder,
};
void* subghz_protocol_encoder_intertechno_v3_alloc(SubGhzEnvironment* environment) {
UNUSED(environment);
SubGhzProtocolEncoderIntertechno_V3* instance =
malloc(sizeof(SubGhzProtocolEncoderIntertechno_V3));
instance->base.protocol = &subghz_protocol_intertechno_v3;
instance->generic.protocol_name = instance->base.protocol->name;
instance->encoder.repeat = 10;
instance->encoder.size_upload = 256;
instance->encoder.upload = malloc(instance->encoder.size_upload * sizeof(LevelDuration));
instance->encoder.is_running = false;
return instance;
}
void subghz_protocol_encoder_intertechno_v3_free(void* context) {
furi_assert(context);
SubGhzProtocolEncoderIntertechno_V3* instance = context;
free(instance->encoder.upload);
free(instance);
}
/**
* Generating an upload from data.
* @param instance Pointer to a SubGhzProtocolEncoderIntertechno_V3 instance
* @return true On success
*/
static bool subghz_protocol_encoder_intertechno_v3_get_upload(
SubGhzProtocolEncoderIntertechno_V3* instance) {
furi_assert(instance);
size_t index = 0;
//Send header
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_intertechno_v3_const.te_short);
instance->encoder.upload[index++] =
level_duration_make(false, (uint32_t)subghz_protocol_intertechno_v3_const.te_short * 38);
//Send sync
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_intertechno_v3_const.te_short);
instance->encoder.upload[index++] =
level_duration_make(false, (uint32_t)subghz_protocol_intertechno_v3_const.te_short * 10);
//Send key data
for(uint8_t i = instance->generic.data_count_bit; i > 0; i--) {
if((instance->generic.data_count_bit == INTERTECHNO_V3_DIMMING_COUNT_BIT) && (i == 9)) {
//send bit dimm
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_intertechno_v3_const.te_short);
instance->encoder.upload[index++] = level_duration_make(
false, (uint32_t)subghz_protocol_intertechno_v3_const.te_short);
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_intertechno_v3_const.te_short);
instance->encoder.upload[index++] = level_duration_make(
false, (uint32_t)subghz_protocol_intertechno_v3_const.te_short);
} else if(bit_read(instance->generic.data, i - 1)) {
//send bit 1
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_intertechno_v3_const.te_short);
instance->encoder.upload[index++] =
level_duration_make(false, (uint32_t)subghz_protocol_intertechno_v3_const.te_long);
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_intertechno_v3_const.te_short);
instance->encoder.upload[index++] = level_duration_make(
false, (uint32_t)subghz_protocol_intertechno_v3_const.te_short);
} else {
//send bit 0
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_intertechno_v3_const.te_short);
instance->encoder.upload[index++] = level_duration_make(
false, (uint32_t)subghz_protocol_intertechno_v3_const.te_short);
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_intertechno_v3_const.te_short);
instance->encoder.upload[index++] =
level_duration_make(false, (uint32_t)subghz_protocol_intertechno_v3_const.te_long);
}
}
instance->encoder.size_upload = index;
return true;
}
bool subghz_protocol_encoder_intertechno_v3_deserialize(
void* context,
FlipperFormat* flipper_format) {
furi_assert(context);
SubGhzProtocolEncoderIntertechno_V3* instance = context;
bool res = false;
do {
if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
FURI_LOG_E(TAG, "Deserialize error");
break;
}
if((instance->generic.data_count_bit !=
subghz_protocol_intertechno_v3_const.min_count_bit_for_found) &&
(instance->generic.data_count_bit != INTERTECHNO_V3_DIMMING_COUNT_BIT)) {
FURI_LOG_E(TAG, "Wrong number of bits in key");
break;
}
//optional parameter parameter
flipper_format_read_uint32(
flipper_format, "Repeat", (uint32_t*)&instance->encoder.repeat, 1);
if(!subghz_protocol_encoder_intertechno_v3_get_upload(instance)) break;
instance->encoder.is_running = true;
res = true;
} while(false);
return res;
}
void subghz_protocol_encoder_intertechno_v3_stop(void* context) {
SubGhzProtocolEncoderIntertechno_V3* instance = context;
instance->encoder.is_running = false;
}
LevelDuration subghz_protocol_encoder_intertechno_v3_yield(void* context) {
SubGhzProtocolEncoderIntertechno_V3* instance = context;
if(instance->encoder.repeat == 0 || !instance->encoder.is_running) {
instance->encoder.is_running = false;
return level_duration_reset();
}
LevelDuration ret = instance->encoder.upload[instance->encoder.front];
if(++instance->encoder.front == instance->encoder.size_upload) {
instance->encoder.repeat--;
instance->encoder.front = 0;
}
return ret;
}
void* subghz_protocol_decoder_intertechno_v3_alloc(SubGhzEnvironment* environment) {
UNUSED(environment);
SubGhzProtocolDecoderIntertechno_V3* instance =
malloc(sizeof(SubGhzProtocolDecoderIntertechno_V3));
instance->base.protocol = &subghz_protocol_intertechno_v3;
instance->generic.protocol_name = instance->base.protocol->name;
return instance;
}
void subghz_protocol_decoder_intertechno_v3_free(void* context) {
furi_assert(context);
SubGhzProtocolDecoderIntertechno_V3* instance = context;
free(instance);
}
void subghz_protocol_decoder_intertechno_v3_reset(void* context) {
furi_assert(context);
SubGhzProtocolDecoderIntertechno_V3* instance = context;
instance->decoder.parser_step = IntertechnoV3DecoderStepReset;
}
void subghz_protocol_decoder_intertechno_v3_feed(void* context, bool level, uint32_t duration) {
furi_assert(context);
SubGhzProtocolDecoderIntertechno_V3* instance = context;
switch(instance->decoder.parser_step) {
case IntertechnoV3DecoderStepReset:
if((!level) &&
(DURATION_DIFF(duration, subghz_protocol_intertechno_v3_const.te_short * 37) <
subghz_protocol_intertechno_v3_const.te_delta * 15)) {
instance->decoder.parser_step = IntertechnoV3DecoderStepStartSync;
}
break;
case IntertechnoV3DecoderStepStartSync:
if(level && (DURATION_DIFF(duration, subghz_protocol_intertechno_v3_const.te_short) <
subghz_protocol_intertechno_v3_const.te_delta)) {
instance->decoder.parser_step = IntertechnoV3DecoderStepFoundSync;
} else {
instance->decoder.parser_step = IntertechnoV3DecoderStepReset;
}
break;
case IntertechnoV3DecoderStepFoundSync:
if(!level && (DURATION_DIFF(duration, subghz_protocol_intertechno_v3_const.te_short * 10) <
subghz_protocol_intertechno_v3_const.te_delta * 3)) {
instance->decoder.parser_step = IntertechnoV3DecoderStepStartDuration;
instance->decoder.decode_data = 0;
instance->decoder.decode_count_bit = 0;
} else {
instance->decoder.parser_step = IntertechnoV3DecoderStepReset;
}
break;
case IntertechnoV3DecoderStepStartDuration:
if(level && (DURATION_DIFF(duration, subghz_protocol_intertechno_v3_const.te_short) <
subghz_protocol_intertechno_v3_const.te_delta)) {
instance->decoder.parser_step = IntertechnoV3DecoderStepSaveDuration;
} else {
instance->decoder.parser_step = IntertechnoV3DecoderStepReset;
}
break;
case IntertechnoV3DecoderStepSaveDuration:
if(!level) { //save interval
if(duration >= (subghz_protocol_intertechno_v3_const.te_short * 11)) {
instance->decoder.parser_step = IntertechnoV3DecoderStepStartSync;
if((instance->decoder.decode_count_bit ==
subghz_protocol_intertechno_v3_const.min_count_bit_for_found) ||
(instance->decoder.decode_count_bit == INTERTECHNO_V3_DIMMING_COUNT_BIT)) {
instance->generic.data = instance->decoder.decode_data;
instance->generic.data_count_bit = instance->decoder.decode_count_bit;
if(instance->base.callback)
instance->base.callback(&instance->base, instance->base.context);
}
break;
}
instance->decoder.te_last = duration;
instance->decoder.parser_step = IntertechnoV3DecoderStepCheckDuration;
} else {
instance->decoder.parser_step = IntertechnoV3DecoderStepReset;
}
break;
case IntertechnoV3DecoderStepCheckDuration:
if(level) {
//Add 0 bit
if((DURATION_DIFF(
instance->decoder.te_last, subghz_protocol_intertechno_v3_const.te_short) <
subghz_protocol_intertechno_v3_const.te_delta) &&
(DURATION_DIFF(duration, subghz_protocol_intertechno_v3_const.te_short) <
subghz_protocol_intertechno_v3_const.te_delta)) {
subghz_protocol_blocks_add_bit(&instance->decoder, 0);
instance->decoder.parser_step = IntertechnoV3DecoderStepEndDuration;
} else if(
//Add 1 bit
(DURATION_DIFF(
instance->decoder.te_last, subghz_protocol_intertechno_v3_const.te_long) <
subghz_protocol_intertechno_v3_const.te_delta * 2) &&
(DURATION_DIFF(duration, subghz_protocol_intertechno_v3_const.te_short) <
subghz_protocol_intertechno_v3_const.te_delta)) {
subghz_protocol_blocks_add_bit(&instance->decoder, 1);
instance->decoder.parser_step = IntertechnoV3DecoderStepEndDuration;
} else if(
//Add dimm_state
(DURATION_DIFF(
instance->decoder.te_last, subghz_protocol_intertechno_v3_const.te_short) <
subghz_protocol_intertechno_v3_const.te_delta * 2) &&
(DURATION_DIFF(duration, subghz_protocol_intertechno_v3_const.te_short) <
subghz_protocol_intertechno_v3_const.te_delta) &&
(instance->decoder.decode_count_bit == 27)) {
subghz_protocol_blocks_add_bit(&instance->decoder, 0);
instance->decoder.parser_step = IntertechnoV3DecoderStepEndDuration;
} else
instance->decoder.parser_step = IntertechnoV3DecoderStepReset;
} else {
instance->decoder.parser_step = IntertechnoV3DecoderStepReset;
}
break;
case IntertechnoV3DecoderStepEndDuration:
if(!level && ((DURATION_DIFF(duration, subghz_protocol_intertechno_v3_const.te_short) <
subghz_protocol_intertechno_v3_const.te_delta) ||
(DURATION_DIFF(duration, subghz_protocol_intertechno_v3_const.te_long) <
subghz_protocol_intertechno_v3_const.te_delta * 2))) {
instance->decoder.parser_step = IntertechnoV3DecoderStepStartDuration;
} else {
instance->decoder.parser_step = IntertechnoV3DecoderStepReset;
}
break;
}
}
/**
* Analysis of received data
* @param instance Pointer to a SubGhzBlockGeneric* instance
*/
static void subghz_protocol_intertechno_v3_check_remote_controller(SubGhzBlockGeneric* instance) {
/*
* A frame is either 32 or 36 bits:
*
* _
* start bit: | |__________ (T,10T)
* _ _
* '0': | |_| |_____ (T,T,T,5T)
* _ _
* '1': | |_____| |_ (T,5T,T,T)
* _ _
* dimm: | |_| |_ (T,T,T,T)
*
* _
* stop bit: | |____...____ (T,38T)
*
* if frame 32 bits
* SSSSSSSSSSSSSSSSSSSSSSSSSS all_ch on/off ~ch
* Key:0x3F86C59F => 00111111100001101100010110 0 1 1111
*
* if frame 36 bits
* SSSSSSSSSSSSSSSSSSSSSSSSSS all_ch dimm ~ch dimm_level
* Key:0x42D2E8856 => 01000010110100101110100010 0 X 0101 0110
*
*/
if(instance->data_count_bit == subghz_protocol_intertechno_v3_const.min_count_bit_for_found) {
instance->serial = (instance->data >> 6) & 0x3FFFFFF;
if((instance->data >> 5) & 0x1) {
instance->cnt = 1 << 5;
} else {
instance->cnt = (~instance->data & 0xF);
}
instance->btn = (instance->data >> 4) & 0x1;
} else if(instance->data_count_bit == INTERTECHNO_V3_DIMMING_COUNT_BIT) {
instance->serial = (instance->data >> 10) & 0x3FFFFFF;
if((instance->data >> 9) & 0x1) {
instance->cnt = 1 << 5;
} else {
instance->cnt = (~(instance->data >> 4) & 0xF);
}
instance->btn = (instance->data) & 0xF;
} else {
instance->serial = 0;
instance->cnt = 0;
instance->btn = 0;
}
}
uint8_t subghz_protocol_decoder_intertechno_v3_get_hash_data(void* context) {
furi_assert(context);
SubGhzProtocolDecoderIntertechno_V3* instance = context;
return subghz_protocol_blocks_get_hash_data(
&instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
}
bool subghz_protocol_decoder_intertechno_v3_serialize(
void* context,
FlipperFormat* flipper_format,
SubGhzPresetDefinition* preset) {
furi_assert(context);
SubGhzProtocolDecoderIntertechno_V3* instance = context;
return subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
}
bool subghz_protocol_decoder_intertechno_v3_deserialize(
void* context,
FlipperFormat* flipper_format) {
furi_assert(context);
SubGhzProtocolDecoderIntertechno_V3* instance = context;
bool ret = false;
do {
if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
break;
}
if((instance->generic.data_count_bit !=
subghz_protocol_intertechno_v3_const.min_count_bit_for_found) &&
(instance->generic.data_count_bit != INTERTECHNO_V3_DIMMING_COUNT_BIT)) {
FURI_LOG_E(TAG, "Wrong number of bits in key");
break;
}
ret = true;
} while(false);
return ret;
}
void subghz_protocol_decoder_intertechno_v3_get_string(void* context, string_t output) {
furi_assert(context);
SubGhzProtocolDecoderIntertechno_V3* instance = context;
subghz_protocol_intertechno_v3_check_remote_controller(&instance->generic);
string_cat_printf(
output,
"%.11s %db\r\n"
"Key:0x%08llX\r\n"
"Sn:%07lX\r\n",
instance->generic.protocol_name,
instance->generic.data_count_bit,
instance->generic.data,
instance->generic.serial);
if(instance->generic.data_count_bit ==
subghz_protocol_intertechno_v3_const.min_count_bit_for_found) {
if(instance->generic.cnt >> 5) {
string_cat_printf(
output, "Ch: All Btn:%s\r\n", (instance->generic.btn ? "On" : "Off"));
} else {
string_cat_printf(
output,
"Ch:" CH_PATTERN " Btn:%s\r\n",
CNT_TO_CH(instance->generic.cnt),
(instance->generic.btn ? "On" : "Off"));
}
} else if(instance->generic.data_count_bit == INTERTECHNO_V3_DIMMING_COUNT_BIT) {
string_cat_printf(
output,
"Ch:" CH_PATTERN " Dimm:%d%%\r\n",
CNT_TO_CH(instance->generic.cnt),
(int)(6.67 * (float)instance->generic.btn));
}
}
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