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RFID: write fix for some protocols

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OFW PR 1828 by nminaylov
This commit is contained in:
MX 2022-10-04 21:06:16 +03:00
parent b5d6d60535
commit 96502e21ae
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GPG key ID: 6C4C311DFD4B4AB5
4 changed files with 20 additions and 0 deletions
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7
lib/lfrfid/protocols/protocol_awid.c
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@ -205,8 +205,15 @@ bool protocol_awid_write_data(ProtocolAwid* protocol, void* data) {
LFRFIDWriteRequest* request = (LFRFIDWriteRequest*)data;
bool result = false;
// Fix incorrect length byte
if(protocol->data[0] != 26 && protocol->data[0] != 50 && protocol->data[0] != 37 &&
protocol->data[0] != 34) {
protocol->data[0] = 26;
}
// Correct protocol data by redecoding
protocol_awid_encode(protocol->data, (uint8_t*)protocol->encoded_data);
bit_lib_remove_bit_every_nth((uint8_t*)protocol->encoded_data, 8, 88, 4);
protocol_awid_decode(protocol->encoded_data, protocol->data);
protocol_awid_encode(protocol->data, (uint8_t*)protocol->encoded_data);

9
lib/lfrfid/protocols/protocol_fdx_a.c
View file

@ -79,6 +79,14 @@ static bool protocol_fdx_a_decode(const uint8_t* from, uint8_t* to) {
return true;
}
static void protocol_fdx_a_fix_parity(ProtocolFDXA* protocol) {
for(size_t i = 0; i < FDXA_DECODED_DATA_SIZE; i++) {
if(bit_lib_test_parity_32(protocol->data[i], BitLibParityOdd)) {
protocol->data[i] ^= (1 << 7);
}
}
}
static bool protocol_fdx_a_can_be_decoded(const uint8_t* data) {
// check preamble
if(data[0] != FDXA_PREAMBLE_0 || data[1] != FDXA_PREAMBLE_1 || data[12] != FDXA_PREAMBLE_0 ||
@ -179,6 +187,7 @@ bool protocol_fdx_a_write_data(ProtocolFDXA* protocol, void* data) {
bool result = false;
// Correct protocol data by redecoding
protocol_fdx_a_fix_parity(protocol);
protocol_fdx_a_encoder_start(protocol);
protocol_fdx_a_decode(protocol->encoded_data, protocol->data);

3
lib/lfrfid/protocols/protocol_keri.c
View file

@ -170,6 +170,7 @@ bool protocol_keri_encoder_start(ProtocolKeri* protocol) {
memset(protocol->encoded_data, 0, KERI_ENCODED_DATA_SIZE);
*(uint32_t*)&protocol->encoded_data[0] = 0b00000000000000000000000011100000;
bit_lib_copy_bits(protocol->encoded_data, 32, 32, protocol->data, 0);
bit_lib_set_bits(protocol->encoded_data, 32, 1, 1);
protocol->encoder.last_bit =
bit_lib_get_bit(protocol->encoded_data, KERI_ENCODED_BIT_SIZE - 1);
@ -224,6 +225,8 @@ bool protocol_keri_write_data(ProtocolKeri* protocol, void* data) {
LFRFIDWriteRequest* request = (LFRFIDWriteRequest*)data;
bool result = false;
// Start bit should be always set
protocol->data[0] |= (1 << 7);
protocol_keri_encoder_start(protocol);
if(request->write_type == LFRFIDWriteTypeT5577) {

1
lib/lfrfid/protocols/protocol_pyramid.c
View file

@ -221,6 +221,7 @@ bool protocol_pyramid_write_data(ProtocolPyramid* protocol, void* data) {
// Correct protocol data by redecoding
protocol_pyramid_encode(protocol);
bit_lib_remove_bit_every_nth(protocol->encoded_data, 8, 15 * 8, 8);
protocol_pyramid_decode(protocol);
protocol_pyramid_encoder_start(protocol);