Now prevents NFT signatures without NFT metadata

src/eth_plugin_handler.c

@@ -48,14 +48,14 @@ void eth_plugin_prepare_query_contract_UI(ethQueryContractUI_t *queryContractUI,
     memset((uint8_t *) queryContractUI, 0, sizeof(ethQueryContractUI_t));
 
     // If no extra information was found, set the pointer to NULL
-    if (allzeroes(&tmpCtx.transactionContext.extraInfo[1], sizeof(union extraInfo_t))) {
+    if (NO_EXTRA_INFO(tmpCtx, 1)) {
         queryContractUI->item1 = NULL;
     } else {
         queryContractUI->item1 = &tmpCtx.transactionContext.extraInfo[1];
     }
 
     // If no extra information was found, set the pointer to NULL
-    if (allzeroes(&tmpCtx.transactionContext.extraInfo[0], sizeof(union extraInfo_t))) {
+    if (NO_EXTRA_INFO(tmpCtx, 0)) {
         queryContractUI->item2 = NULL;
     } else {
         queryContractUI->item2 = &tmpCtx.transactionContext.extraInfo[0];

src/eth_plugin_handler.h

@@ -3,6 +3,9 @@
 
 #include "eth_plugin_interface.h"
 
+#define NO_EXTRA_INFO(ctx, idx) \
+    (allzeroes(&(ctx.transactionContext.extraInfo[idx]), sizeof(extraInfo_t)))
+
 void eth_plugin_prepare_init(ethPluginInitContract_t *init, uint8_t *selector, uint32_t dataSize);
 void eth_plugin_prepare_provide_parameter(ethPluginProvideParameter_t *provideParameter,
                                           uint8_t *parameter,

src/nft.h

@@ -1,7 +1,10 @@
 #ifndef _NFT_H_
 #define _NFT_H_
 
+#include <stdint.h>
+
 #define COLLECTION_NAME_MAX_LEN 70
+#define NO_NFT_METADATA         (NO_EXTRA_INFO(tmpCtx, 1))
 
 typedef struct nftInfo_t {
     uint8_t contractAddress[ADDRESS_LENGTH];  // must be first item