flipperzero-firmware/applications/nfc/helpers/nfc_emv_parser.c
hedger 056446dfed
[FL-2675] /int space reservation (#1448)
* storage: added global #defines for /int, /ext & /any
* storage: introduced PATH_EXT, PATH_INT& PATH_ANY macros
* core apps: moved hardcoded config files names to separate headers; prefixed them with "."; updater: added file name migration to new naming convention on backup extraction
* storage: fixed storage_merge_recursive handling of complex directory structures; storage_move_to_sd: changed data migration logic to all non-dot files & all folders
* core: added macro aliases for core record names
* Bumped protobuf commit pointer
* storage: reserved 5 pages in /int; denying write&creation of non-dot files when running out of free space

Co-authored-by: あく <alleteam@gmail.com>
2022-07-26 21:21:51 +09:00

83 lines
2.3 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_PATH("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_PATH("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_PATH("nfc/assets/currency_code.nfc"), key, currency_name)) {
parsed = true;
}
string_clear(key);
return parsed;
}