Momentum-Apps/scenes/esubghz_chat_key_display.c

#include "../esubghz_chat_i.h"

void key_display_result_cb(DialogExResult result, void* context)
{
	furi_assert(context);
	ESubGhzChatState* state = context;

	switch(result) {
	case DialogExResultLeft:
		scene_manager_handle_custom_event(state->scene_manager,
				ESubGhzChatEvent_KeyDisplayBack);
		break;

	default:
		break;
	}
}

/* Prepares the key display scene. */
void scene_on_enter_key_display(void* context)
{
	FURI_LOG_T(APPLICATION_NAME, "scene_on_enter_key_display");

	furi_assert(context);
	ESubGhzChatState* state = context;

	if (state->encrypted) {
		uint8_t key[KEY_BITS / 8];
		crypto_ctx_get_key(state->crypto_ctx, key);
		snprintf(state->key_hex_str, KEY_HEX_STR_SIZE,
				"%02hX%02hX%02hX%02hX%02hX%02hX"
				"%02hX%02hX%02hX%02hX%02hX\n"
				"%02hX%02hX%02hX%02hX%02hX%02hX"
				"%02hX%02hX%02hX%02hX%02hX\n"
				"%02hX%02hX%02hX%02hX%02hX%02hX"
				"%02hX%02hX%02hX%02hX",
				key[0], key[1], key[2], key[3], key[4], key[5],
				key[6], key[7], key[8], key[9], key[10],
				key[11], key[12], key[13], key[14], key[15], key[16],
				key[17], key[18], key[19], key[20], key[21],
				key[22], key[23], key[24], key[25], key[26], key[27],
				key[28], key[29], key[30], key[31]);
		crypto_explicit_bzero(key, sizeof(key));
	} else {
		strcpy(state->key_hex_str, "No Key");
	}

	dialog_ex_reset(state->key_display);

	dialog_ex_set_header(state->key_display, "KEY (HEX)", 64, 2,
			AlignCenter, AlignTop);
	dialog_ex_set_text(state->key_display, state->key_hex_str, 64, 16,
			AlignCenter, AlignTop);

	dialog_ex_set_icon(state->key_display, 0, 0, NULL);

	dialog_ex_set_left_button_text(state->key_display, "Back");

	dialog_ex_set_result_callback(state->key_display,
			key_display_result_cb);
	dialog_ex_set_context(state->key_display, state);

	view_dispatcher_switch_to_view(state->view_dispatcher, ESubGhzChatView_KeyDisplay);
}

/* Handles scene manager events for the key display scene. */
bool scene_on_event_key_display(void* context, SceneManagerEvent event)
{
	FURI_LOG_T(APPLICATION_NAME, "scene_on_event_key_display");

	furi_assert(context);
	ESubGhzChatState* state = context;

	bool consumed = false;

	switch(event.type) {
	case SceneManagerEventTypeCustom:
		switch(event.event) {
		/* switch to message input scene */
		case ESubGhzChatEvent_KeyDisplayBack:
			if (!scene_manager_previous_scene(
						state->scene_manager)) {
				view_dispatcher_stop(state->view_dispatcher);
			}
			consumed = true;
			break;
		}
		break;

	default:
		consumed = false;
		break;
	}

	return consumed;
}

/* Cleans up the key display scene. */
void scene_on_exit_key_display(void* context)
{
	FURI_LOG_T(APPLICATION_NAME, "scene_on_exit_key_display");

	furi_assert(context);
	ESubGhzChatState* state = context;

	dialog_ex_reset(state->key_display);
	crypto_explicit_bzero(state->key_hex_str, sizeof(state->key_hex_str));
}