B2CA-1813: High Fees warning screen

Makefile

@@ -30,7 +30,7 @@ APPNAME      = "Cardano ADA"
 # Application version
 APPVERSION_M = 7
 APPVERSION_N = 1
-APPVERSION_P = 3
+APPVERSION_P = 4
 APPVERSION   = "$(APPVERSION_M).$(APPVERSION_N).$(APPVERSION_P)"
 
 # Application source files

src/signTx_ui.c

@@ -293,6 +293,8 @@ void signTx_handleInput_ui_runStep()
 
 // ============================== FEE ==============================
 
+#define MAX_FEES 5000000	// 5 ADA threshold
+
 void signTx_handleFee_ui_runStep()
 {
 	TRACE("UI step %d", ctx->ui_step);
@@ -304,11 +306,17 @@ void signTx_handleFee_ui_runStep()
 
 	UI_STEP(HANDLE_FEE_STEP_DISPLAY) {
 		#ifdef HAVE_BAGL
-		ui_displayAdaAmountScreen("Transaction fee", BODY_CTX->stageData.fee, this_fn);
+		if (BODY_CTX->stageData.fee > (uint64_t)MAX_FEES) {
+			ui_displayPaginatedText("Warning: Fees are", "above 5 ADA", fee_high_cb);
+		} else {
+			fee_high_cb();
+		}
 		#elif defined(HAVE_NBGL)
-		char adaAmountStr[50] = {0};
-		ui_getAdaAmountScreen(adaAmountStr, SIZEOF(adaAmountStr), BODY_CTX->stageData.fee);
-		fill_and_display_if_required("Fees", adaAmountStr, this_fn, respond_with_user_reject);
+		if (BODY_CTX->stageData.fee > (uint64_t)MAX_FEES) {
+			display_warning_fee();
+		} else {
+			fee_high_cb(TOKEN_HIGH_FEES_NEXT, 0);
+		}
 		#endif // HAVE_BAGL
 	}
 	UI_STEP(HANDLE_FEE_STEP_RESPOND) {

src/ui.h

@@ -3,8 +3,17 @@
 
 #include "io.h"
 #include "uiHelpers.h"
+#ifdef HAVE_NBGL
+#include "nbgl_use_case.h"
+#endif
 
 #ifdef HAVE_NBGL
+enum {
+    TOKEN_HIGH_FEES_NEXT = FIRST_USER_TOKEN,
+    TOKEN_HIGH_FEES_REJECT,
+};
+
+
 typedef void (*callback_t)(void);
 
 void set_light_confirmation(bool needed);
@@ -24,6 +33,8 @@ void ui_idle_flow(void);
 void display_cancel_message(void);
 void display_error(void);
 void nbgl_reset_transaction_full_context(void);
+void display_warning_fee(void);
+void fee_high_cb(int token, uint8_t index);
 #endif
 
 #ifdef HAVE_BAGL

src/uiScreens_bagl.c

@@ -10,6 +10,7 @@
 #include "state.h"
 #include "uiHelpers.h"
 #include "menu.h"
+#include "signTx_ui.h"
 
 static const int INS_NONE = -1;
 
@@ -906,4 +907,9 @@ void ui_displayInputScreen(
 	        callback
 	);
 }
+
+void fee_high_cb(void) {
+	ui_displayAdaAmountScreen("Transaction fee", BODY_CTX->stageData.fee, signTx_handleFee_ui_runStep);
+}
+
 #endif // HAVE_BAGL

src/uiScreens_bagl.h

@@ -177,4 +177,6 @@ void ui_displayInputScreen(
         ui_callback_fn_t callback
 );
 
+void fee_high_cb(void);
+
 #endif // H_CARDANO_APP_UI_SCREENS_BAGL

src/ui_nbgl.c

@@ -20,6 +20,7 @@
 #include "ui.h"
 #include "uiHelpers.h"
 #include "uiScreens_nbgl.h"
+#include "signTx_ui.h"
 
 #define MAX_LINE_PER_PAGE_COUNT NB_MAX_LINES_IN_REVIEW
 #define MAX_TAG_TITLE_LINE_LENGTH 30
@@ -334,7 +335,7 @@ static void _display_warning(void)
 {
 	TRACE("_warning");
 
-	nbgl_useCaseReviewStart(&C_warning64px, "WARNING",
+	nbgl_useCaseReviewStart(&C_Warning_64px, "WARNING",
 	                        uiContext.pageText[0], "Reject if not sure",
 	                        ui_callback, &display_cancel);
 	#ifdef HEADLESS
@@ -356,7 +357,7 @@ static void _display_choice(void)
 {
 	TRACE("_choice");
 
-	nbgl_useCaseChoice(&C_round_warning_64px, uiContext.pageText[0],
+	nbgl_useCaseChoice(&C_Important_Circle_64px, uiContext.pageText[0],
 	                   uiContext.pageText[1], "Allow", "Don't Allow",
 	                   display_choice_callback);
 	#ifdef HEADLESS
@@ -602,4 +603,47 @@ void display_status(const char* text)
 {
 	nbgl_useCaseStatus(text, true, ui_idle_flow);
 }
+
+
+void fee_high_cb(int token, uint8_t index) {
+	UNUSED(index);
+	char adaAmountStr[50] = {0};
+
+	switch (token) {
+		case TOKEN_HIGH_FEES_NEXT:
+			ui_getAdaAmountScreen(adaAmountStr, SIZEOF(adaAmountStr), BODY_CTX->stageData.fee);
+			fill_and_display_if_required("Fees", adaAmountStr, signTx_handleFee_ui_runStep, respond_with_user_reject);
+			break;
+		case TOKEN_HIGH_FEES_REJECT:
+			nbgl_useCaseConfirm("Reject transaction?", NULL, "Yes, reject",
+								"Go back to transaction", display_cancel_status);
+			break;
+		default:
+			break;
+	}
+}
+
+void display_warning_fee(void) {
+	nbgl_pageInfoDescription_t info = {0};
+
+	info.footerText     = "Reject";
+	info.footerToken    = TOKEN_HIGH_FEES_REJECT;
+	info.isSwipeable    = true;
+	info.tapActionToken = TOKEN_HIGH_FEES_NEXT;
+	info.topRightStyle  = NO_BUTTON_STYLE;
+	info.tuneId         = TUNE_LOOK_AT_ME;
+
+	info.centeredInfo.icon  = &C_Important_Circle_64px;
+	info.centeredInfo.text1 = "Fee are above\n5 ADA";
+	info.centeredInfo.text3 = "Swipe to review";
+	info.centeredInfo.style = LARGE_CASE_GRAY_INFO;
+
+	nbgl_pageDrawInfo(fee_high_cb, NULL, &info);
+
+	#ifdef HEADLESS
+	nbgl_refresh();
+	fee_high_cb(TOKEN_HIGH_FEES_NEXT, 0);
+	#endif
+}
+
 #endif // HAVE_NBGL