[FL-3008], [FL-2734], [FL-2766], [FL-2898] NFC bug fixes (#2098)

* nfc: rework mf classic update
* nfc: rename cache folder to .cache
* nfc: fix ATQA order bytes in nfc files
* file browser: add hide dot files option
* nfc: fix iso-14443-4 uid cards emulation
* nfc: fix unit tests

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

applications/debug/unit_tests/nfc/nfc_test.c

@@ -393,7 +393,7 @@ static void mf_classic_generator_test(uint8_t uid_len, MfClassicType type) {
         "nfc_device_save == true assert failed\r\n");
     // Verify that key cache is saved
     FuriString* key_cache_name = furi_string_alloc();
-    furi_string_set_str(key_cache_name, "/ext/nfc/cache/");
+    furi_string_set_str(key_cache_name, "/ext/nfc/.cache/");
     for(size_t i = 0; i < uid_len; i++) {
         furi_string_cat_printf(key_cache_name, "%02X", uid[i]);
     }

applications/main/archive/helpers/archive_browser.c

@@ -80,10 +80,11 @@ static void archive_file_browser_set_path(
     ArchiveBrowserView* browser,
     FuriString* path,
     const char* filter_ext,
-    bool skip_assets) {
+    bool skip_assets,
+    bool hide_dot_files) {
     furi_assert(browser);
     if(!browser->worker_running) {
-        browser->worker = file_browser_worker_alloc(path, filter_ext, skip_assets);
+        browser->worker = file_browser_worker_alloc(path, filter_ext, skip_assets, hide_dot_files);
         file_browser_worker_set_callback_context(browser->worker, browser);
         file_browser_worker_set_folder_callback(browser->worker, archive_folder_open_cb);
         file_browser_worker_set_list_callback(browser->worker, archive_list_load_cb);
@@ -92,7 +93,8 @@ static void archive_file_browser_set_path(
         browser->worker_running = true;
     } else {
         furi_assert(browser->worker);
-        file_browser_worker_set_config(browser->worker, path, filter_ext, skip_assets);
+        file_browser_worker_set_config(
+            browser->worker, path, filter_ext, skip_assets, hide_dot_files);
     }
 }
 
@@ -473,7 +475,7 @@ void archive_switch_tab(ArchiveBrowserView* browser, InputKey key) {
         if(archive_is_dir_exists(browser->path)) {
             bool skip_assets = (strcmp(archive_get_tab_ext(tab), "*") == 0) ? false : true;
             archive_file_browser_set_path(
-                browser, browser->path, archive_get_tab_ext(tab), skip_assets);
+                browser, browser->path, archive_get_tab_ext(tab), skip_assets, false);
             tab_empty = false; // Empty check will be performed later
         }
     }

applications/services/dialogs/dialogs.h

@@ -19,6 +19,7 @@ typedef struct DialogsApp DialogsApp;
  * File browser dialog extra options
  * @param extension file extension to be offered for selection
  * @param skip_assets true - do not show assets folders
+ * @param hide_dot_files true - hide dot files
  * @param icon file icon pointer, NULL for default icon
  * @param hide_ext true - hide extensions for files
  * @param item_loader_callback callback function for providing custom icon & entry name
@@ -27,6 +28,7 @@ typedef struct DialogsApp DialogsApp;
 typedef struct {
     const char* extension;
     bool skip_assets;
+    bool hide_dot_files;
     const Icon* icon;
     bool hide_ext;
     FileBrowserLoadItemCallback item_loader_callback;

applications/services/dialogs/dialogs_api.c

@@ -20,6 +20,7 @@ bool dialog_file_browser_show(
             .file_icon = options ? options->icon : NULL,
             .hide_ext = options ? options->hide_ext : true,
             .skip_assets = options ? options->skip_assets : true,
+            .hide_dot_files = options ? options->hide_dot_files : true,
             .preselected_filename = path,
             .item_callback = options ? options->item_loader_callback : NULL,
             .item_callback_context = options ? options->item_loader_context : NULL,

applications/services/dialogs/dialogs_message.h

@@ -11,6 +11,7 @@ typedef struct {
     const char* extension;
     bool skip_assets;
     bool hide_ext;
+    bool hide_dot_files;
     const Icon* file_icon;
     FuriString* result_path;
     FuriString* preselected_filename;

applications/services/dialogs/dialogs_module_file_browser.c

@@ -38,7 +38,12 @@ bool dialogs_app_process_module_file_browser(const DialogsAppMessageDataFileBrow
     file_browser_set_callback(
         file_browser, dialogs_app_file_browser_callback, file_browser_context);
     file_browser_configure(
-        file_browser, data->extension, data->skip_assets, data->file_icon, data->hide_ext);
+        file_browser,
+        data->extension,
+        data->skip_assets,
+        data->hide_dot_files,
+        data->file_icon,
+        data->hide_ext);
     file_browser_set_item_callback(file_browser, data->item_callback, data->item_callback_context);
     file_browser_start(file_browser, data->preselected_filename);
 

applications/services/gui/modules/file_browser.c

@@ -84,6 +84,7 @@ struct FileBrowser {
     BrowserWorker* worker;
     const char* ext_filter;
     bool skip_assets;
+    bool hide_dot_files;
     bool hide_ext;
 
     FileBrowserCallback callback;
@@ -163,6 +164,7 @@ void file_browser_configure(
     FileBrowser* browser,
     const char* extension,
     bool skip_assets,
+    bool hide_dot_files,
     const Icon* file_icon,
     bool hide_ext) {
     furi_assert(browser);
@@ -170,6 +172,7 @@ void file_browser_configure(
     browser->ext_filter = extension;
     browser->skip_assets = skip_assets;
     browser->hide_ext = hide_ext;
+    browser->hide_dot_files = hide_dot_files;
 
     with_view_model(
         browser->view,
@@ -183,7 +186,8 @@ void file_browser_configure(
 
 void file_browser_start(FileBrowser* browser, FuriString* path) {
     furi_assert(browser);
-    browser->worker = file_browser_worker_alloc(path, browser->ext_filter, browser->skip_assets);
+    browser->worker = file_browser_worker_alloc(
+        path, browser->ext_filter, browser->skip_assets, browser->hide_dot_files);
     file_browser_worker_set_callback_context(browser->worker, browser);
     file_browser_worker_set_folder_callback(browser->worker, browser_folder_open_cb);
     file_browser_worker_set_list_callback(browser->worker, browser_list_load_cb);

applications/services/gui/modules/file_browser.h

@@ -30,6 +30,7 @@ void file_browser_configure(
     FileBrowser* browser,
     const char* extension,
     bool skip_assets,
+    bool hide_dot_files,
     const Icon* file_icon,
     bool hide_ext);
 

applications/services/gui/modules/file_browser_worker.c

@@ -42,6 +42,7 @@ struct BrowserWorker {
     uint32_t load_offset;
     uint32_t load_count;
     bool skip_assets;
+    bool hide_dot_files;
     idx_last_array_t idx_last;
 
     void* cb_ctx;
@@ -76,6 +77,13 @@ static bool browser_path_trim(FuriString* path) {
 }
 
 static bool browser_filter_by_name(BrowserWorker* browser, FuriString* name, bool is_folder) {
+    // Skip dot files if enabled
+    if(browser->hide_dot_files) {
+        if(furi_string_start_with_str(name, ".")) {
+            return false;
+        }
+    }
+
     if(is_folder) {
         // Skip assets folders (if enabled)
         if(browser->skip_assets) {
@@ -361,14 +369,18 @@ static int32_t browser_worker(void* context) {
     return 0;
 }
 
-BrowserWorker*
-    file_browser_worker_alloc(FuriString* path, const char* filter_ext, bool skip_assets) {
+BrowserWorker* file_browser_worker_alloc(
+    FuriString* path,
+    const char* filter_ext,
+    bool skip_assets,
+    bool hide_dot_files) {
     BrowserWorker* browser = malloc(sizeof(BrowserWorker)); //-V773
 
     idx_last_array_init(browser->idx_last);
 
     browser->filter_extension = furi_string_alloc_set(filter_ext);
     browser->skip_assets = skip_assets;
+    browser->hide_dot_files = hide_dot_files;
     browser->path_start = furi_string_alloc_set(path);
     browser->path_current = furi_string_alloc_set(path);
     browser->path_next = furi_string_alloc_set(path);
@@ -437,11 +449,13 @@ void file_browser_worker_set_config(
     BrowserWorker* browser,
     FuriString* path,
     const char* filter_ext,
-    bool skip_assets) {
+    bool skip_assets,
+    bool hide_dot_files) {
     furi_assert(browser);
     furi_string_set(browser->path_next, path);
     furi_string_set(browser->filter_extension, filter_ext);
     browser->skip_assets = skip_assets;
+    browser->hide_dot_files = hide_dot_files;
     furi_thread_flags_set(furi_thread_get_id(browser->thread), WorkerEvtConfigChange);
 }
 

applications/services/gui/modules/file_browser_worker.h

@@ -21,8 +21,11 @@ typedef void (*BrowserWorkerListItemCallback)(
     bool is_last);
 typedef void (*BrowserWorkerLongLoadCallback)(void* context);
 
-BrowserWorker*
-    file_browser_worker_alloc(FuriString* path, const char* filter_ext, bool skip_assets);
+BrowserWorker* file_browser_worker_alloc(
+    FuriString* path,
+    const char* filter_ext,
+    bool skip_assets,
+    bool hide_dot_files);
 
 void file_browser_worker_free(BrowserWorker* browser);
 
@@ -48,7 +51,8 @@ void file_browser_worker_set_config(
     BrowserWorker* browser,
     FuriString* path,
     const char* filter_ext,
-    bool skip_assets);
+    bool skip_assets,
+    bool hide_dot_files);
 
 void file_browser_worker_folder_enter(BrowserWorker* browser, FuriString* path, int32_t item_idx);
 

firmware/targets/f7/api_symbols.csv

@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,8.1,,
+Version,+,9.0,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
 Header,+,applications/services/cli/cli_vcp.h,,
@@ -806,14 +806,14 @@ Function,-,fgetpos,int,"FILE*, fpos_t*"
 Function,-,fgets,char*,"char*, int, FILE*"
 Function,-,fgets_unlocked,char*,"char*, int, FILE*"
 Function,+,file_browser_alloc,FileBrowser*,FuriString*
-Function,+,file_browser_configure,void,"FileBrowser*, const char*, _Bool, const Icon*, _Bool"
+Function,+,file_browser_configure,void,"FileBrowser*, const char*, _Bool, _Bool, const Icon*, _Bool"
 Function,+,file_browser_free,void,FileBrowser*
 Function,+,file_browser_get_view,View*,FileBrowser*
 Function,+,file_browser_set_callback,void,"FileBrowser*, FileBrowserCallback, void*"
 Function,+,file_browser_set_item_callback,void,"FileBrowser*, FileBrowserLoadItemCallback, void*"
 Function,+,file_browser_start,void,"FileBrowser*, FuriString*"
 Function,+,file_browser_stop,void,FileBrowser*
-Function,+,file_browser_worker_alloc,BrowserWorker*,"FuriString*, const char*, _Bool"
+Function,+,file_browser_worker_alloc,BrowserWorker*,"FuriString*, const char*, _Bool, _Bool"
 Function,+,file_browser_worker_folder_enter,void,"BrowserWorker*, FuriString*, int32_t"
 Function,+,file_browser_worker_folder_exit,void,BrowserWorker*
 Function,+,file_browser_worker_folder_refresh,void,"BrowserWorker*, int32_t"
@@ -821,7 +821,7 @@ Function,+,file_browser_worker_free,void,BrowserWorker*
 Function,+,file_browser_worker_is_in_start_folder,_Bool,BrowserWorker*
 Function,+,file_browser_worker_load,void,"BrowserWorker*, uint32_t, uint32_t"
 Function,+,file_browser_worker_set_callback_context,void,"BrowserWorker*, void*"
-Function,+,file_browser_worker_set_config,void,"BrowserWorker*, FuriString*, const char*, _Bool"
+Function,+,file_browser_worker_set_config,void,"BrowserWorker*, FuriString*, const char*, _Bool, _Bool"
 Function,+,file_browser_worker_set_folder_callback,void,"BrowserWorker*, BrowserWorkerFolderOpenCallback"
 Function,+,file_browser_worker_set_item_callback,void,"BrowserWorker*, BrowserWorkerListItemCallback"
 Function,+,file_browser_worker_set_list_callback,void,"BrowserWorker*, BrowserWorkerListLoadCallback"

firmware/targets/f7/furi_hal/furi_hal_nfc.c

@@ -244,6 +244,9 @@ bool furi_hal_nfc_listen(
     params.lmConfigPA.SEL_RES = sak;
     rfalNfcDiscover(&params);
 
+    // Disable EMD suppression.
+    st25r3916ModifyRegister(ST25R3916_REG_EMD_SUP_CONF, ST25R3916_REG_EMD_SUP_CONF_emd_emv, 0);
+
     uint32_t start = DWT->CYCCNT;
     while(state != RFAL_NFC_STATE_ACTIVATED) {
         rfalNfcWorker();

lib/nfc/nfc_device.c

@@ -8,11 +8,11 @@
 #include <flipper_format/flipper_format.h>
 
 #define TAG "NfcDevice"
-#define NFC_DEVICE_KEYS_FOLDER EXT_PATH("nfc/cache")
+#define NFC_DEVICE_KEYS_FOLDER EXT_PATH("nfc/.cache")
 #define NFC_DEVICE_KEYS_EXTENSION ".keys"
 
 static const char* nfc_file_header = "Flipper NFC device";
-static const uint32_t nfc_file_version = 2;
+static const uint32_t nfc_file_version = 3;
 
 static const char* nfc_keys_file_header = "Flipper NFC keys";
 static const uint32_t nfc_keys_file_version = 1;
@@ -27,6 +27,11 @@ NfcDevice* nfc_device_alloc() {
     nfc_dev->dialogs = furi_record_open(RECORD_DIALOGS);
     nfc_dev->load_path = furi_string_alloc();
     nfc_dev->dev_data.parsed_data = furi_string_alloc();
+
+    // Rename cache folder name for backward compatibility
+    if(storage_common_stat(nfc_dev->storage, "/ext/nfc/cache", NULL) == FSE_OK) {
+        storage_common_rename(nfc_dev->storage, "/ext/nfc/cache", NFC_DEVICE_KEYS_FOLDER);
+    }
     return nfc_dev;
 }
 
@@ -1041,7 +1046,9 @@ bool nfc_device_save(NfcDevice* dev, const char* dev_name) {
         if(!flipper_format_write_comment_cstr(file, "UID, ATQA and SAK are common for all formats"))
             break;
         if(!flipper_format_write_hex(file, "UID", data->uid, data->uid_len)) break;
-        if(!flipper_format_write_hex(file, "ATQA", data->atqa, 2)) break;
+        // Save ATQA in MSB order for correct companion apps display
+        uint8_t atqa[2] = {data->atqa[1], data->atqa[0]};
+        if(!flipper_format_write_hex(file, "ATQA", atqa, 2)) break;
         if(!flipper_format_write_hex(file, "SAK", &data->sak, 1)) break;
         // Save more data if necessary
         if(dev->format == NfcDeviceSaveFormatMifareUl) {
@@ -1089,6 +1096,9 @@ static bool nfc_device_load_data(NfcDevice* dev, FuriString* path, bool show_dia
     temp_str = furi_string_alloc();
     bool deprecated_version = false;
 
+    // Version 2 of file format had ATQA bytes swapped
+    uint32_t version_with_lsb_atqa = 2;
+
     if(dev->loading_cb) {
         dev->loading_cb(dev->loading_cb_ctx, true);
     }
@@ -1107,10 +1117,13 @@ static bool nfc_device_load_data(NfcDevice* dev, FuriString* path, bool show_dia
         // Read and verify file header
         uint32_t version = 0;
         if(!flipper_format_read_header(file, temp_str, &version)) break;
-        if(furi_string_cmp_str(temp_str, nfc_file_header) || (version != nfc_file_version)) {
+        if(furi_string_cmp_str(temp_str, nfc_file_header)) break;
+        if(version != nfc_file_version) {
+            if(version < version_with_lsb_atqa) {
                 deprecated_version = true;
                 break;
             }
+        }
         // Read Nfc device type
         if(!flipper_format_read_string(file, "Device type", temp_str)) break;
         if(!nfc_device_parse_format_string(dev, temp_str)) break;
@@ -1119,7 +1132,14 @@ static bool nfc_device_load_data(NfcDevice* dev, FuriString* path, bool show_dia
         if(!(data_cnt == 4 || data_cnt == 7)) break;
         data->uid_len = data_cnt;
         if(!flipper_format_read_hex(file, "UID", data->uid, data->uid_len)) break;
+        if(version == version_with_lsb_atqa) {
             if(!flipper_format_read_hex(file, "ATQA", data->atqa, 2)) break;
+        } else {
+            uint8_t atqa[2] = {};
+            if(!flipper_format_read_hex(file, "ATQA", atqa, 2)) break;
+            data->atqa[0] = atqa[1];
+            data->atqa[1] = atqa[0];
+        }
         if(!flipper_format_read_hex(file, "SAK", &data->sak, 1)) break;
         // Load CUID
         uint8_t* cuid_start = data->uid;
@@ -1187,6 +1207,7 @@ bool nfc_file_select(NfcDevice* dev) {
     const DialogsFileBrowserOptions browser_options = {
         .extension = NFC_APP_EXTENSION,
         .skip_assets = true,
+        .hide_dot_files = true,
         .icon = &I_Nfc_10px,
         .hide_ext = true,
         .item_loader_callback = NULL,

lib/nfc/protocols/mifare_classic.c

@@ -712,46 +712,16 @@ uint8_t mf_classic_update_card(FuriHalNfcTxRxContext* tx_rx, MfClassicData* data
     furi_assert(tx_rx);
     furi_assert(data);
 
-    uint8_t sectors_read = 0;
-    Crypto1 crypto = {};
     uint8_t total_sectors = mf_classic_get_total_sectors_num(data->type);
-    uint64_t key_a = 0;
-    uint64_t key_b = 0;
-    MfClassicSectorReader sec_reader = {};
-    MfClassicSector temp_sector = {};
 
     for(size_t i = 0; i < total_sectors; i++) {
-        MfClassicSectorTrailer* sec_tr = mf_classic_get_sector_trailer_by_sector(data, i);
-        // Load key A
-        if(mf_classic_is_key_found(data, i, MfClassicKeyA)) {
-            sec_reader.key_a = nfc_util_bytes2num(sec_tr->key_a, 6);
-        } else {
-            sec_reader.key_a = MF_CLASSIC_NO_KEY;
-        }
-        // Load key B
-        if(mf_classic_is_key_found(data, i, MfClassicKeyB)) {
-            sec_reader.key_b = nfc_util_bytes2num(sec_tr->key_b, 6);
-        } else {
-            sec_reader.key_b = MF_CLASSIC_NO_KEY;
-        }
-        if((key_a != MF_CLASSIC_NO_KEY) || (key_b != MF_CLASSIC_NO_KEY)) {
-            sec_reader.sector_num = i;
-            if(mf_classic_read_sector_with_reader(tx_rx, &crypto, &sec_reader, &temp_sector)) {
-                uint8_t first_block = mf_classic_get_first_block_num_of_sector(i);
-                for(uint8_t j = 0; j < temp_sector.total_blocks; j++) {
-                    mf_classic_set_block_read(data, first_block + j, &temp_sector.block[j]);
-                }
-                sectors_read++;
-            } else {
-                // Invalid key, set it to not found
-                if(key_a != MF_CLASSIC_NO_KEY) {
-                    mf_classic_set_key_not_found(data, i, MfClassicKeyA);
-                } else {
-                    mf_classic_set_key_not_found(data, i, MfClassicKeyB);
-                }
-            }
-        }
+        mf_classic_read_sector(tx_rx, data, i);
     }
+    uint8_t sectors_read = 0;
+    uint8_t keys_found = 0;
+    mf_classic_get_read_sectors_and_keys(data, &sectors_read, &keys_found);
+    FURI_LOG_D(TAG, "Read %d sectors and %d keys", sectors_read, keys_found);
+
     return sectors_read;
 }