Add support for view tags when scanning

monero-project/monero#8061

src/rpc/daemon_zmq.cpp

@@ -93,6 +93,10 @@ namespace cryptonote
   {
     wire::object(source, WIRE_FIELD(hash));
   }
+  static void read_bytes(wire::json_reader& source, txout_to_tagged_key& self)
+  {
+    wire::object(source, WIRE_FIELD(key), WIRE_FIELD(view_tag));
+  }
   static void read_bytes(wire::json_reader& source, txout_to_key& self)
   {
     wire::object(source, WIRE_FIELD(key));
@@ -103,6 +107,7 @@ namespace cryptonote
       WIRE_FIELD(amount),
       wire::variant_field("transaction output variant", std::ref(self.target),
         wire::option<txout_to_key>{"to_key"},
+        wire::option<txout_to_tagged_key>{"to_tagged_key"},
         wire::option<txout_to_script>{"to_script"},
         wire::option<txout_to_scripthash>{"to_scripthash"}
       )

src/scanner.cpp

@@ -241,14 +241,18 @@ namespace lws
         {
           ++index;
 
-          cryptonote::txout_to_key const* const out_data =
-            boost::get<cryptonote::txout_to_key>(std::addressof(out.target));
-          if (!out_data)
+          crypto::public_key out_pub_key;
+          if (!cryptonote::get_output_public_key(out, out_pub_key))
+            continue; // to next output
+
+          boost::optional<crypto::view_tag> view_tag_opt =
+            cryptonote::get_output_view_tag(out);
+          if (!cryptonote::out_can_be_to_acc(view_tag_opt, derived, index))
             continue; // to next output
 
           crypto::public_key derived_pub;
           const bool received =
-            crypto::wallet::derive_subaddress_public_key(out_data->key, derived, index, derived_pub) &&
+            crypto::wallet::derive_subaddress_public_key(out_pub_key, derived, index, derived_pub) &&
             derived_pub == user.spend_public();
 
           if (!received)
@@ -300,7 +304,7 @@ namespace lws
               timestamp,
               tx.unlock_time,
               *prefix_hash,
-              out_data->key,
+              out_pub_key,
               mask,
               {0, 0, 0, 0, 0, 0, 0}, // reserved bytes
               db::pack(ext, payment_id.first),

src/wire/crypto.h

@@ -69,4 +69,9 @@ namespace wire
   struct is_blob<rct::key>
     : std::true_type
   {};
+
+  template<>
+  struct is_blob<crypto::view_tag>
+    : std::true_type
+  {};
 }