[FL-1919] NFC rework with Flipper File Format (#756)

* nfc: allocate nfc device on heap
* nfc: rework save with flipper file format
* nfc: rework nfc device load with flipper file
* nfc: save AID length and data
* nfc: remove file worker usage
* nfc: format sources
* nfc: rework with flipper file format addons
* assets: update EMV resources with flipper file format
* nfc: rework EMV resources parsing with new file format
* assets: fix EMV AID file format
* nfc: fix nfc_device usage

Co-authored-by: あく <alleteam@gmail.com>

applications/nfc/helpers/nfc_emv_parser.c

@@ -1,49 +1,80 @@
 #include "nfc_emv_parser.h"
+#include <lib/flipper_file/flipper_file.h>
 
-#include <file-worker.h>
+static const char* nfc_resources_header = "Flipper EMV resources";
+static const uint32_t nfc_resources_file_version = 1;
 
-static bool
-    nfc_emv_parser_get_value(const char* file_path, string_t key, char delimiter, string_t value) {
-    bool found = false;
-    FileWorker* file_worker = file_worker_alloc(true);
+static bool nfc_emv_parser_search_data(
+    Storage* storage,
+    const char* file_name,
+    string_t key,
+    string_t data) {
+    bool parsed = false;
+    FlipperFile* file = flipper_file_alloc(storage);
+    string_t temp_str;
+    string_init(temp_str);
 
-    if(file_worker_open(file_worker, file_path, FSAM_READ, FSOM_OPEN_EXISTING)) {
-        if(file_worker_get_value_from_key(file_worker, key, delimiter, value)) {
-            found = true;
-        }
-    }
+    do {
+        // Open file
+        if(!flipper_file_open_existing(file, file_name)) break;
+        // Read file header and version
+        uint32_t version = 0;
+        if(!flipper_file_read_header(file, temp_str, &version)) break;
+        if(string_cmp_str(temp_str, nfc_resources_header) ||
+           (version != nfc_resources_file_version))
+            break;
+        if(!flipper_file_read_string(file, string_get_cstr(key), data)) break;
+        parsed = true;
+    } while(false);
 
-    file_worker_close(file_worker);
-    file_worker_free(file_worker);
-    return found;
+    string_clear(temp_str);
+    flipper_file_free(file);
+    return parsed;
 }
 
-bool nfc_emv_parser_get_aid_name(uint8_t* aid, uint8_t aid_len, string_t aid_name) {
-    bool result = false;
+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]);
     }
-    result = nfc_emv_parser_get_value("/ext/nfc/emv/aid.nfc", key, ' ', aid_name);
+    if(nfc_emv_parser_search_data(storage, "/ext/nfc/emv/aid.nfc", key, aid_name)) {
+        parsed = true;
+    }
     string_clear(key);
-    return result;
+    return parsed;
 }
 
-bool nfc_emv_parser_get_country_name(uint16_t country_code, string_t country_name) {
-    bool result = false;
+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);
-    result = nfc_emv_parser_get_value("/ext/nfc/emv/country_code.nfc", key, ' ', country_name);
+    if(nfc_emv_parser_search_data(storage, "/ext/nfc/emv/country_code.nfc", key, country_name)) {
+        parsed = true;
+    }
     string_clear(key);
-    return result;
+    return parsed;
 }
 
-bool nfc_emv_parser_get_currency_name(uint16_t currency_code, string_t currency_name) {
-    bool result = false;
+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);
-    result = nfc_emv_parser_get_value("/ext/nfc/emv/currency_code.nfc", key, ' ', currency_name);
+    if(nfc_emv_parser_search_data(storage, "/ext/nfc/emv/currency_code.nfc", key, currency_name)) {
+        parsed = true;
+    }
     string_clear(key);
-    return result;
+    return parsed;
 }

applications/nfc/helpers/nfc_emv_parser.h

@@ -3,25 +3,39 @@
 #include <stdint.h>
 #include <stdbool.h>
 #include <m-string.h>
+#include <storage/storage.h>
 
 /** Get EMV application name by number
+ * @param storage Storage instance
  * @param aid - AID number array
  * @param aid_len - AID length
  * @param aid_name - string to keep AID name
  * @return - true if AID found, false otherwies
  */
-bool nfc_emv_parser_get_aid_name(uint8_t* aid, uint8_t aid_len, string_t aid_name);
+bool nfc_emv_parser_get_aid_name(
+    Storage* storage,
+    uint8_t* aid,
+    uint8_t aid_len,
+    string_t aid_name);
 
 /** Get country name by country code
+ * @param storage Storage instance
  * @param country_code - ISO 3166 country code
  * @param country_name - string to keep country name
  * @return - true if country found, false otherwies
  */
-bool nfc_emv_parser_get_country_name(uint16_t country_code, string_t country_name);
+bool nfc_emv_parser_get_country_name(
+    Storage* storage,
+    uint16_t country_code,
+    string_t country_name);
 
 /** Get currency name by currency code
+ * @param storage Storage instance
  * @param currency_code - ISO 3166 currency code
  * @param currency_name - string to keep currency name
  * @return - true if currency found, false otherwies
  */
-bool nfc_emv_parser_get_currency_name(uint16_t currency_code, string_t currency_name);
+bool nfc_emv_parser_get_currency_name(
+    Storage* storage,
+    uint16_t currency_code,
+    string_t currency_name);