wallet: new rescan_spent command to update outputs' spent status

This obsoletes the need for a lengthy blockchain rescan when
a transaction doesn't end up in the chain after being accepted
by the daemon, or any other reason why the wallet's idea of
spent and unspent outputs gets out of sync from the blockchain's.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/wallet/wallet_errors.h b/src/wallet/wallet_errors.h
index bf520c36c..94518e691 100644
--- a/src/wallet/wallet_errors.h
+++ b/src/wallet/wallet_errors.h
@@ -73,6 +73,7 @@ namespace tools
     //       wallet_rpc_error *
     //         daemon_busy
     //         no_connection_to_daemon
+    //         is_key_image_spent_error
     //       wallet_files_doesnt_correspond
     //
     // * - class with protected ctor
@@ -574,6 +575,14 @@ namespace tools
       }
     };
     //----------------------------------------------------------------------------------------------------
+    struct is_key_image_spent_error : public wallet_rpc_error
+    {
+      explicit is_key_image_spent_error(std::string&& loc, const std::string& request)
+        : wallet_rpc_error(std::move(loc), "error from is_key_image_spent call", request)
+      {
+      }
+    };
+    //----------------------------------------------------------------------------------------------------
     struct wallet_files_doesnt_correspond : public wallet_logic_error
     {
       explicit wallet_files_doesnt_correspond(std::string&& loc, const std::string& keys_file, const std::string& wallet_file)