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Code Issues Activity

NFC TRT Parser: Additional checks to prevent false positives (#3966)

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* additional checks to prevent false positives
* Update trt.c

Co-authored-by: あく <alleteam@gmail.com>
This commit is contained in:
Zinong Li
2024-10-20 23:58:33 +08:00
committed by GitHub
parent 1822221c69
commit f8fa71c575
1 changed files with 4 additions and 1 deletions
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5
applications/main/nfc/plugins/supported_cards/trt.c
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@@ -40,7 +40,10 @@ static bool trt_parse(const NfcDevice* device, FuriString* parsed_data) {
const uint8_t* full_record_pointer = &data->page[FULL_SALE_TIME_STAMP_PAGE].data[0]; const uint8_t* full_record_pointer = &data->page[FULL_SALE_TIME_STAMP_PAGE].data[0];
uint32_t latest_sale_record = bit_lib_get_bits_32(partial_record_pointer, 3, 20); uint32_t latest_sale_record = bit_lib_get_bits_32(partial_record_pointer, 3, 20);
uint32_t latest_sale_full_record = bit_lib_get_bits_32(full_record_pointer, 0, 27); uint32_t latest_sale_full_record = bit_lib_get_bits_32(full_record_pointer, 0, 27);
if(latest_sale_record != (latest_sale_full_record & 0xFFFFF)) break; if(latest_sale_record != (latest_sale_full_record & 0xFFFFF))
break; // check if the copy matches
if((latest_sale_record == 0) || (latest_sale_full_record == 0))
break; // prevent false positive
// Parse date // Parse date
// yyy yyyymmmm dddddhhh hhnnnnnn // yyy yyyymmmm dddddhhh hhnnnnnn