Added some asset info util functions

src/manage_asset_info.c

@@ -4,12 +4,26 @@ void reset_known_tokens(void) {
     memset(tmpCtx.transactionContext.tokenSet, 0, MAX_ITEMS);
 }
 
+static extraInfo_t *get_asset_info(uint8_t index) {
+    if (index >= MAX_ITEMS) {
+        return NULL;
+    }
+    return &tmpCtx.transactionContext.extraInfo[index];
+}
+
+static bool asset_info_is_set(uint8_t index) {
+    if (index >= MAX_ITEMS) {
+        return false;
+    }
+    return tmpCtx.transactionContext.tokenSet[index] != 0;
+}
+
 extraInfo_t *get_asset_info_by_addr(const uint8_t *contractAddress) {
     // Works for ERC-20 & NFT tokens since both structs in the union have the
     // contract address aligned
     for (uint8_t i = 0; i < MAX_ITEMS; i++) {
         extraInfo_t *currentItem = &tmpCtx.transactionContext.extraInfo[i];
-        if (tmpCtx.transactionContext.tokenSet[i] &&
+        if (asset_info_is_set(i) &&
             (memcmp(currentItem->token.address, contractAddress, ADDRESS_LENGTH) == 0)) {
             PRINTF("Token found at index %d\n", i);
             return currentItem;
@@ -18,3 +32,14 @@ extraInfo_t *get_asset_info_by_addr(const uint8_t *contractAddress) {
 
     return NULL;
 }
+
+extraInfo_t *get_current_asset_info(void) {
+    return get_asset_info(tmpCtx.transactionContext.currentItemIndex);
+}
+
+void validate_current_asset_info(void) {
+    // mark it as set
+    tmpCtx.transactionContext.tokenSet[tmpCtx.transactionContext.currentItemIndex] = 1;
+    // increment index
+    tmpCtx.transactionContext.currentItemIndex = (tmpCtx.transactionContext.currentItemIndex + 1) % MAX_ITEMS;
+}

src/manage_asset_info.h

@@ -4,3 +4,5 @@
 
 void reset_known_tokens(void);
 extraInfo_t *get_asset_info_by_addr(const uint8_t *contractAddress);
+extraInfo_t *get_current_asset_info(void);
+void validate_current_asset_info(void);