unleashed-firmware/applications/nfc/helpers/nfc_emv_parser.c
SG 274c12fc56
[FL-2274] Inventing streams and moving FFF to them (#981)
* Streams: string stream
* String stream: updated insert/delete api
* Streams: generic stream interface and string stream implementation
* Streams: helpers for insert and delete_and_insert
* FFF: now compatible with streams
* MinUnit: introduced tests with arguments
* FFF: stream access violation
* Streams: copy data between streams
* Streams: file stream
* FFF: documentation
* FFStream: documentation
* FFF: alloc as file
* MinUnit: support for nested tests
* Streams: changed delete_and_insert, now it returns success flag. Added ability dump stream inner parameters and data to cout.
* FFF: simplified file open function
* Streams: unit tests
* FFF: tests
* Streams: declare cache_size constant as define, to allow variable modified arrays
* FFF: lib moved to a separate folder
* iButton: new FFF
* RFID: new FFF
* Animations: new FFF
* IR: new FFF
* NFC: new FFF
* Flipper file format: delete lib
* U2F: new FFF
* Subghz: new FFF and streams
* Streams: read line
* Streams: split
* FuriCore: implement memset with extra asserts
* FuriCore: implement extra heap asserts without inventing memset
* Scene manager: protected access to the scene id stack with a size check
* NFC worker: dirty fix for issue where hal_nfc was busy on app start
* Furi: update allocator to erase memory on allocation. Replace furi_alloc with malloc.
* FuriCore: cleanup memmgr code.
* Furi HAL: furi_hal_init is split into critical and non-critical parts. The critical part is currently clock and console.
* Memmgr: added ability to track allocations and deallocations through console.
* FFStream: some speedup
* Streams, FF: minor fixes
* Tests: restore
* File stream: a slightly more thread-safe version of file_stream_delete_and_insert

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
2022-02-18 22:53:46 +03:00

82 lines
2.2 KiB
C
Executable File

#include "nfc_emv_parser.h"
#include <flipper_format/flipper_format.h>
static const char* nfc_resources_header = "Flipper EMV resources";
static const uint32_t nfc_resources_file_version = 1;
static bool nfc_emv_parser_search_data(
Storage* storage,
const char* file_name,
string_t key,
string_t data) {
bool parsed = false;
FlipperFormat* file = flipper_format_file_alloc(storage);
string_t temp_str;
string_init(temp_str);
do {
// Open file
if(!flipper_format_file_open_existing(file, file_name)) break;
// Read file header and version
uint32_t version = 0;
if(!flipper_format_read_header(file, temp_str, &version)) break;
if(string_cmp_str(temp_str, nfc_resources_header) ||
(version != nfc_resources_file_version))
break;
if(!flipper_format_read_string(file, string_get_cstr(key), data)) break;
parsed = true;
} while(false);
string_clear(temp_str);
flipper_format_free(file);
return parsed;
}
bool nfc_emv_parser_get_aid_name(
Storage* storage,
uint8_t* aid,
uint8_t aid_len,
string_t aid_name) {
furi_assert(storage);
bool parsed = false;
string_t key;
string_init(key);
for(uint8_t i = 0; i < aid_len; i++) {
string_cat_printf(key, "%02X", aid[i]);
}
if(nfc_emv_parser_search_data(storage, "/ext/nfc/assets/aid.nfc", key, aid_name)) {
parsed = true;
}
string_clear(key);
return parsed;
}
bool nfc_emv_parser_get_country_name(
Storage* storage,
uint16_t country_code,
string_t country_name) {
bool parsed = false;
string_t key;
string_init_printf(key, "%04X", country_code);
if(nfc_emv_parser_search_data(storage, "/ext/nfc/assets/country_code.nfc", key, country_name)) {
parsed = true;
}
string_clear(key);
return parsed;
}
bool nfc_emv_parser_get_currency_name(
Storage* storage,
uint16_t currency_code,
string_t currency_name) {
bool parsed = false;
string_t key;
string_init_printf(key, "%04X", currency_code);
if(nfc_emv_parser_search_data(
storage, "/ext/nfc/assets/currency_code.nfc", key, currency_name)) {
parsed = true;
}
string_clear(key);
return parsed;
}