1 files changed, 22 insertions, 23 deletions

diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index 0b310111e..05fe0a1ad 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -5701,17 +5701,13 @@ void wallet2::load(const std::string& wallet_, const epee::wipeable_string& pass
 
         try
         {
-          std::stringstream iss;
-          iss << cache_data;
-          binary_archive<false> ar(iss);
+          binary_archive<false> ar{epee::strspan<std::uint8_t>(cache_data)};
           if (::serialization::serialize(ar, *this))
             if (::serialization::check_stream_state(ar))
               loaded = true;
           if (!loaded)
           {
-            std::stringstream iss;
-            iss << cache_data;
-            binary_archive<false> ar(iss);
+            binary_archive<false> ar{epee::strspan<std::uint8_t>(cache_data)};
             ar.enable_varint_bug_backward_compatibility();
             if (::serialization::serialize(ar, *this))
               if (::serialization::check_stream_state(ar))
@@ -6786,8 +6782,7 @@ bool wallet2::parse_unsigned_tx_from_str(const std::string &unsigned_tx_st, unsi
     catch(const std::exception &e) { LOG_PRINT_L0("Failed to decrypt unsigned tx: " << e.what()); return false; }
     try
     {
-      std::istringstream iss(s);
-      binary_archive<false> ar(iss);
+      binary_archive<false> ar{epee::strspan<std::uint8_t>(s)};
       if (!::serialization::serialize(ar, exported_txs))
       {
         LOG_PRINT_L0("Failed to parse data from unsigned tx");
@@ -7101,8 +7096,7 @@ bool wallet2::parse_tx_from_str(const std::string &signed_tx_st, std::vector<too
     catch (const std::exception &e) { LOG_PRINT_L0("Failed to decrypt signed transaction: " << e.what()); return false; }
     try
     {
-      std::istringstream iss(s);
-      binary_archive<false> ar(iss);
+      binary_archive<false> ar{epee::strspan<std::uint8_t>(s)};
       if (!::serialization::serialize(ar, signed_txs))
       {
         LOG_PRINT_L0("Failed to deserialize signed transaction");
@@ -7237,8 +7231,7 @@ bool wallet2::parse_multisig_tx_from_str(std::string multisig_tx_st, multisig_tx
   bool loaded = false;
   try
   {
-    std::istringstream iss(multisig_tx_st);
-    binary_archive<false> ar(iss);
+    binary_archive<false> ar{epee::strspan<std::uint8_t>(multisig_tx_st)};
     if (::serialization::serialize(ar, exported_txs))
       if (::serialization::check_stream_state(ar))
         loaded = true;
@@ -11516,6 +11509,9 @@ void wallet2::check_tx_key_helper(const cryptonote::transaction &tx, const crypt
 
 void wallet2::check_tx_key_helper(const crypto::hash &txid, const crypto::key_derivation &derivation, const std::vector<crypto::key_derivation> &additional_derivations, const cryptonote::account_public_address &address, uint64_t &received, bool &in_pool, uint64_t &confirmations)
 {
+  uint32_t rpc_version;
+  THROW_WALLET_EXCEPTION_IF(!check_connection(&rpc_version), error::wallet_internal_error, "Failed to connect to daemon: " + get_daemon_address());
+
   COMMAND_RPC_GET_TRANSACTIONS::request req;
   COMMAND_RPC_GET_TRANSACTIONS::response res;
   req.txs_hashes.push_back(epee::string_tools::pod_to_hex(txid));
@@ -11561,10 +11557,17 @@ void wallet2::check_tx_key_helper(const crypto::hash &txid, const crypto::key_de
   confirmations = 0;
   if (!in_pool)
   {
-    std::string err;
-    uint64_t bc_height = get_daemon_blockchain_height(err);
-    if (err.empty())
-      confirmations = bc_height - res.txs.front().block_height;
+    if (rpc_version < MAKE_CORE_RPC_VERSION(3, 7))
+    {
+      std::string err;
+      uint64_t bc_height = get_daemon_blockchain_height(err);
+      if (err.empty() && bc_height > res.txs.front().block_height)
+        confirmations = bc_height - res.txs.front().block_height;
+    }
+    else
+    {
+      confirmations = res.txs.front().confirmations;
+    }
   }
 }
 
@@ -12027,8 +12030,7 @@ bool wallet2::check_reserve_proof(const cryptonote::account_public_address &addr
   serializable_unordered_map<crypto::public_key, crypto::signature> subaddr_spendkeys;
   try
   {
-    std::istringstream iss(sig_decoded);
-    binary_archive<false> ar(iss);
+    binary_archive<false> ar{epee::strspan<std::uint8_t>(sig_decoded)};
     if (::serialization::serialize_noeof(ar, proofs))
       if (::serialization::serialize_noeof(ar, subaddr_spendkeys))
         if (::serialization::check_stream_state(ar))
@@ -13212,9 +13214,7 @@ size_t wallet2::import_outputs_from_str(const std::string &outputs_st)
     std::pair<uint64_t, std::vector<tools::wallet2::transfer_details>> outputs;
     try
     {
-      std::stringstream iss;
-      iss << body;
-      binary_archive<false> ar(iss);
+      binary_archive<false> ar{epee::strspan<std::uint8_t>(body)};
       if (::serialization::serialize(ar, outputs))
         if (::serialization::check_stream_state(ar))
           loaded = true;
@@ -13466,8 +13466,7 @@ size_t wallet2::import_multisig(std::vector<cryptonote::blobdata> blobs)
     bool loaded = false;
     try
     {
-      std::istringstream iss(body);
-      binary_archive<false> ar(iss);
+      binary_archive<false> ar{epee::strspan<std::uint8_t>(body)};
       if (::serialization::serialize(ar, i))
         if (::serialization::check_stream_state(ar))
           loaded = true;