FindMy: Add OpenHaystack import from .keys file

applications/system/findmy/scenes/findmy_scene_config.c

@@ -3,7 +3,8 @@
 enum VarItemListIndex {
     VarItemListIndexBroadcastInterval,
     VarItemListIndexTransmitPower,
-    VarItemListIndexRegisterTag,
+    VarItemListIndexImportTagFromFile,
+    VarItemListIndexRegisterTagManually,
     VarItemListIndexAbout,
 };
 
@@ -57,7 +58,10 @@ void findmy_scene_config_on_enter(void* context) {
     snprintf(power_str, sizeof(power_str), "%ddBm", app->state.transmit_power);
     variable_item_set_current_value_text(item, power_str);
 
-    item = variable_item_list_add(var_item_list, "Register Tag", 0, NULL, NULL);
+    item = variable_item_list_add(var_item_list, "Import Tag From File", 0, NULL, NULL);
+
+    item = variable_item_list_add(var_item_list, "Register Tag Manually", 0, NULL, NULL);
+
     item = variable_item_list_add(
         var_item_list,
         "Matthew KuKanich, Thanks to Chapoly1305, WillyJL, OpenHaystack, Testers",
@@ -82,7 +86,10 @@ bool findmy_scene_config_on_event(void* context, SceneManagerEvent event) {
         scene_manager_set_scene_state(app->scene_manager, FindMySceneConfig, event.event);
         consumed = true;
         switch(event.event) {
-        case VarItemListIndexRegisterTag:
+        case VarItemListIndexImportTagFromFile:
+            scene_manager_next_scene(app->scene_manager, FindMySceneConfigImport);
+            break;
+        case VarItemListIndexRegisterTagManually:
             scene_manager_next_scene(app->scene_manager, FindMySceneConfigMac);
             break;
         case VarItemListIndexAbout:

applications/system/findmy/scenes/findmy_scene_config_import.c

@@ -0,0 +1,145 @@
+#include "../findmy_i.h"
+
+enum VarItemListIndex {
+    VarItemListIndexOpenHaystack,
+};
+
+static const char* parse_open_haystack(FindMy* app, const char* path) {
+    const char* error = NULL;
+
+    Stream* stream = file_stream_alloc(app->storage);
+    FuriString* line = furi_string_alloc();
+    do {
+        error = "Can't open file";
+        if(!file_stream_open(stream, path, FSAM_READ, FSOM_OPEN_EXISTING)) break;
+
+        error = "Wrong file format";
+        while(stream_read_line(stream, line)) {
+            if(furi_string_start_with(line, "Public key: ") ||
+               furi_string_start_with(line, "Advertisement key: ")) {
+                error = NULL;
+                break;
+            }
+        }
+        if(error) break;
+
+        furi_string_right(line, furi_string_search_char(line, ':') + 2);
+        furi_string_trim(line);
+
+        error = "Base64 failed";
+        size_t decoded_len;
+        uint8_t* public_key = base64_decode(
+            (uint8_t*)furi_string_get_cstr(line), furi_string_size(line), &decoded_len);
+        if(decoded_len != 28) {
+            free(public_key);
+            break;
+        }
+
+        memcpy(app->state.mac, public_key, sizeof(app->state.mac));
+        app->state.mac[0] |= 0b11000000;
+        furi_hal_bt_reverse_mac_addr(app->state.mac);
+
+        uint8_t advertisement_template[EXTRA_BEACON_MAX_DATA_SIZE] = {
+            0x1e, // length (30)
+            0xff, // manufacturer specific data
+            0x4c, 0x00, // company ID (Apple)
+            0x12, 0x19, // offline finding type and length
+            0x00, //state
+            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+            0x00, // first two bits of key[0]
+            0x00, // hint
+        };
+        memcpy(app->state.data, advertisement_template, sizeof(app->state.data));
+        memcpy(&app->state.data[7], &public_key[6], decoded_len - 6);
+        app->state.data[29] = public_key[0] >> 6;
+        findmy_state_sync_config(&app->state);
+        findmy_state_save(&app->state);
+
+        free(public_key);
+        error = NULL;
+
+    } while(false);
+    furi_string_free(line);
+    file_stream_close(stream);
+    stream_free(stream);
+
+    return error;
+}
+
+void findmy_scene_config_import_callback(void* context, uint32_t index) {
+    furi_assert(context);
+    FindMy* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, index);
+}
+
+void findmy_scene_config_import_on_enter(void* context) {
+    FindMy* app = context;
+    VariableItemList* var_item_list = app->var_item_list;
+    VariableItem* item;
+
+    item = variable_item_list_add(var_item_list, "OpenHaystack .keys", 0, NULL, NULL);
+
+    // This scene acts more like a submenu than a var item list tbh
+    UNUSED(item);
+
+    variable_item_list_set_enter_callback(var_item_list, findmy_scene_config_import_callback, app);
+
+    variable_item_list_set_selected_item(
+        var_item_list, scene_manager_get_scene_state(app->scene_manager, FindMySceneConfigImport));
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FindMyViewVarItemList);
+}
+
+bool findmy_scene_config_import_on_event(void* context, SceneManagerEvent event) {
+    FindMy* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        scene_manager_set_scene_state(app->scene_manager, FindMySceneConfigImport, event.event);
+        consumed = true;
+
+        const char* extension = NULL;
+        switch(event.event) {
+        case VarItemListIndexOpenHaystack:
+            extension = ".keys";
+            break;
+        default:
+            break;
+        }
+        if(!extension) {
+            return consumed;
+        }
+
+        const DialogsFileBrowserOptions browser_options = {
+            .extension = extension,
+            .icon = &I_text_10px,
+            .base_path = FINDMY_STATE_DIR,
+        };
+        storage_simply_mkdir(app->storage, browser_options.base_path);
+        FuriString* path = furi_string_alloc_set_str(browser_options.base_path);
+        if(dialog_file_browser_show(app->dialogs, path, path, &browser_options)) {
+            // The parse functions return the error text, or NULL for success
+            // Used in result to show success or error message
+            const char* error = NULL;
+            switch(event.event) {
+            case VarItemListIndexOpenHaystack:
+                error = parse_open_haystack(app, furi_string_get_cstr(path));
+                break;
+            }
+            scene_manager_set_scene_state(
+                app->scene_manager, FindMySceneConfigImportResult, (uint32_t)error);
+            scene_manager_next_scene(app->scene_manager, FindMySceneConfigImportResult);
+        }
+        furi_string_free(path);
+    }
+
+    return consumed;
+}
+
+void findmy_scene_config_import_on_exit(void* context) {
+    FindMy* app = context;
+    VariableItemList* var_item_list = app->var_item_list;
+
+    variable_item_list_reset(var_item_list);
+}

applications/system/findmy/scenes/findmy_scene_config_import_result.c

@@ -0,0 +1,58 @@
+#include "../findmy_i.h"
+
+enum PopupEvent {
+    PopupEventExit,
+};
+
+static void findmy_scene_config_import_result_callback(void* context) {
+    FindMy* app = context;
+
+    view_dispatcher_send_custom_event(app->view_dispatcher, PopupEventExit);
+}
+
+void findmy_scene_config_import_result_on_enter(void* context) {
+    FindMy* app = context;
+    Popup* popup = app->popup;
+
+    const char* error = (const char*)scene_manager_get_scene_state(
+        app->scene_manager, FindMySceneConfigImportResult);
+    if(error) {
+        popup_set_icon(popup, 83, 22, &I_WarningDolphinFlip_45x42);
+        popup_set_header(popup, "Error!", 13, 22, AlignLeft, AlignBottom);
+        popup_set_text(popup, error, 6, 26, AlignLeft, AlignTop);
+        popup_disable_timeout(popup);
+    } else {
+        popup_set_icon(popup, 36, 5, &I_DolphinDone_80x58);
+        popup_set_header(popup, "Imported!", 13, 22, AlignLeft, AlignBottom);
+        popup_enable_timeout(popup);
+    }
+    popup_set_timeout(popup, 1500);
+    popup_set_context(popup, app);
+    popup_set_callback(popup, findmy_scene_config_import_result_callback);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FindMyViewPopup);
+}
+
+bool findmy_scene_config_import_result_on_event(void* context, SceneManagerEvent event) {
+    FindMy* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        switch(event.event) {
+        case PopupEventExit:
+            scene_manager_search_and_switch_to_previous_scene(
+                app->scene_manager, FindMySceneConfig);
+            break;
+        default:
+            break;
+        }
+    }
+
+    return consumed;
+}
+
+void findmy_scene_config_import_result_on_exit(void* context) {
+    FindMy* app = context;
+    popup_reset(app->popup);
+}

applications/system/findmy/scenes/findmy_scenes.h

@@ -1,4 +1,6 @@
 ADD_SCENE(findmy, main, Main)
 ADD_SCENE(findmy, config, Config)
+ADD_SCENE(findmy, config_import, ConfigImport)
+ADD_SCENE(findmy, config_import_result, ConfigImportResult)
 ADD_SCENE(findmy, config_mac, ConfigMac)
 ADD_SCENE(findmy, config_packet, ConfigPacket)