[FL-1958] U2F prototype (#879)

* U2F implementation prototype
* U2F data encryption and store, user confirmation request
* remove debug prints
* fix notification bug in chrome
* split u2f_alloc into u2f_init and u2f_alloc
* typo fix, furi-hal-trng -> furi-hal-random
* rand/srand redefinition
* SubGhz: a little bit of Dante.
* u2f_data naming fix

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

applications/u2f/scenes/u2f_scene.c

@@ -0,0 +1,30 @@
+#include "u2f_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const u2f_scene_on_enter_handlers[])(void*) = {
+#include "u2f_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const u2f_scene_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "u2f_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const u2f_scene_on_exit_handlers[])(void* context) = {
+#include "u2f_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers u2f_scene_handlers = {
+    .on_enter_handlers = u2f_scene_on_enter_handlers,
+    .on_event_handlers = u2f_scene_on_event_handlers,
+    .on_exit_handlers = u2f_scene_on_exit_handlers,
+    .scene_num = U2fSceneNum,
+};

applications/u2f/scenes/u2f_scene.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) U2fScene##id,
+typedef enum {
+#include "u2f_scene_config.h"
+    U2fSceneNum,
+} U2fScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers u2f_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "u2f_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "u2f_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "u2f_scene_config.h"
+#undef ADD_SCENE

applications/u2f/scenes/u2f_scene_config.h

@@ -0,0 +1 @@
+ADD_SCENE(u2f, main, Main)

applications/u2f/scenes/u2f_scene_main.c

@@ -0,0 +1,92 @@
+#include "../u2f_app_i.h"
+#include "../views/u2f_view.h"
+#include "furi-hal.h"
+#include "../u2f.h"
+
+#define U2F_EVENT_TIMEOUT 500
+
+static void u2f_scene_main_ok_callback(InputType type, void* context) {
+    furi_assert(context);
+    U2fApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, U2fCustomEventConfirm);
+}
+
+static void u2f_scene_main_event_callback(U2fNotifyEvent evt, void* context) {
+    furi_assert(context);
+    U2fApp* app = context;
+    if(evt == U2fNotifyRegister)
+        view_dispatcher_send_custom_event(app->view_dispatcher, U2fCustomEventRegister);
+    else if(evt == U2fNotifyAuth)
+        view_dispatcher_send_custom_event(app->view_dispatcher, U2fCustomEventAuth);
+    else if(evt == U2fNotifyWink)
+        view_dispatcher_send_custom_event(app->view_dispatcher, U2fCustomEventWink);
+}
+
+static void u2f_scene_main_timer_callback(void* context) {
+    furi_assert(context);
+    U2fApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, U2fCustomEventTimeout);
+}
+
+bool u2f_scene_main_on_event(void* context, SceneManagerEvent event) {
+    furi_assert(context);
+    U2fApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if((event.event == U2fCustomEventRegister) || (event.event == U2fCustomEventAuth)) {
+            osTimerStart(app->timer, U2F_EVENT_TIMEOUT);
+            if(app->event_cur == U2fCustomEventNone) {
+                app->event_cur = event.event;
+                if(event.event == U2fCustomEventRegister)
+                    u2f_view_set_state(app->u2f_view, U2fMsgRegister);
+                else if(event.event == U2fCustomEventAuth)
+                    u2f_view_set_state(app->u2f_view, U2fMsgAuth);
+                notification_message(app->notifications, &sequence_success);
+            }
+            notification_message(app->notifications, &sequence_blink_blue_10);
+        } else if(event.event == U2fCustomEventWink) {
+            notification_message(app->notifications, &sequence_blink_green_10);
+        } else if(event.event == U2fCustomEventTimeout) {
+            app->event_cur = U2fCustomEventNone;
+            u2f_view_set_state(app->u2f_view, U2fMsgNone);
+        } else if(event.event == U2fCustomEventConfirm) {
+            if(app->event_cur != U2fCustomEventNone) {
+                u2f_confirm_user_present(app->u2f_instance);
+            }
+        }
+
+        consumed = true;
+    } else if(event.type == SceneManagerEventTypeTick) {
+    }
+    return consumed;
+}
+
+void u2f_scene_main_on_enter(void* context) {
+    U2fApp* app = context;
+
+    app->timer = osTimerNew(u2f_scene_main_timer_callback, osTimerOnce, app, NULL);
+
+    app->u2f_instance = u2f_alloc();
+    app->u2f_ready = u2f_init(app->u2f_instance);
+    if(app->u2f_ready == true) {
+        u2f_set_event_callback(app->u2f_instance, u2f_scene_main_event_callback, app);
+        app->u2f_hid = u2f_hid_start(app->u2f_instance);
+        u2f_view_set_ok_callback(app->u2f_view, u2f_scene_main_ok_callback, app);
+    } else {
+        u2f_free(app->u2f_instance);
+        u2f_view_set_state(app->u2f_view, U2fMsgError);
+    }
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, U2fAppViewMain);
+}
+
+void u2f_scene_main_on_exit(void* context) {
+    U2fApp* app = context;
+    osTimerStop(app->timer);
+    osTimerDelete(app->timer);
+    if(app->u2f_ready == true) {
+        u2f_hid_stop(app->u2f_hid);
+        u2f_free(app->u2f_instance);
+    }
+}