wallet_rpc_server: optionally return tx blobs on transfer calls

also add do_not_relay flag to them, so it now becomes possible
to create a tx without sending it yet

src/wallet/wallet_rpc_server.cpp

@@ -454,7 +454,8 @@ namespace tools
         return false;
       }
 
-      m_wallet->commit_tx(ptx_vector);
+      if (!req.do_not_relay)
+        m_wallet->commit_tx(ptx_vector);
 
       // populate response with tx hash
       res.tx_hash = epee::string_tools::pod_to_hex(cryptonote::get_transaction_hash(ptx_vector.back().tx));
@@ -463,6 +464,13 @@ namespace tools
         res.tx_key = epee::string_tools::pod_to_hex(ptx_vector.back().tx_key);
       }
       res.fee = ptx_vector.back().fee;
+
+      if (req.get_tx_hex)
+      {
+        cryptonote::blobdata blob;
+        tx_to_blob(ptx_vector.back().tx, blob);
+        res.tx_blob = epee::string_tools::buff_to_hex_nodelimer(blob);
+      }
       return true;
     }
     catch (const tools::error::daemon_busy& e)
@@ -519,9 +527,12 @@ namespace tools
       ptx_vector = m_wallet->create_transactions_2(dsts, mixin, req.unlock_time, req.priority, extra, m_trusted_daemon);
       LOG_PRINT_L2("on_transfer_split called create_transactions_2");
 
-      LOG_PRINT_L2("on_transfer_split calling commit_tx");
+      if (!req.do_not_relay)
-      m_wallet->commit_tx(ptx_vector);
+      {
-      LOG_PRINT_L2("on_transfer_split called commit_tx");
+        LOG_PRINT_L2("on_transfer_split calling commit_tx");
+        m_wallet->commit_tx(ptx_vector);
+        LOG_PRINT_L2("on_transfer_split called commit_tx");
+      }
 
       // populate response with tx hashes
       for (auto & ptx : ptx_vector)
@@ -538,6 +549,13 @@ namespace tools
         res.amount_list.push_back(ptx_amount);
 
         res.fee_list.push_back(ptx.fee);
+
+        if (req.get_tx_hex)
+        {
+          cryptonote::blobdata blob;
+          tx_to_blob(ptx.tx, blob);
+          res.tx_blob_list.push_back(epee::string_tools::buff_to_hex_nodelimer(blob));
+        }
       }
 
       return true;
@@ -577,7 +595,8 @@ namespace tools
     {
       std::vector<wallet2::pending_tx> ptx_vector = m_wallet->create_unmixable_sweep_transactions(m_trusted_daemon);
 
-      m_wallet->commit_tx(ptx_vector);
+      if (!req.do_not_relay)
+        m_wallet->commit_tx(ptx_vector);
 
       // populate response with tx hashes
       for (auto & ptx : ptx_vector)
@@ -588,6 +607,12 @@ namespace tools
           res.tx_key_list.push_back(epee::string_tools::pod_to_hex(ptx.tx_key));
         }
         res.fee_list.push_back(ptx.fee);
+        if (req.get_tx_hex)
+        {
+          cryptonote::blobdata blob;
+          tx_to_blob(ptx.tx, blob);
+          res.tx_blob_list.push_back(epee::string_tools::buff_to_hex_nodelimer(blob));
+        }
       }
 
       return true;
@@ -640,7 +665,8 @@ namespace tools
     {
       std::vector<wallet2::pending_tx> ptx_vector = m_wallet->create_transactions_all(req.below_amount, dsts[0].addr, req.mixin, req.unlock_time, req.priority, extra, m_trusted_daemon);
 
-      m_wallet->commit_tx(ptx_vector);
+      if (!req.do_not_relay)
+        m_wallet->commit_tx(ptx_vector);
 
       // populate response with tx hashes
       for (auto & ptx : ptx_vector)
@@ -650,7 +676,12 @@ namespace tools
         {
           res.tx_key_list.push_back(epee::string_tools::pod_to_hex(ptx.tx_key));
         }
-        res.fee_list.push_back(ptx.fee);
+        if (req.get_tx_hex)
+        {
+          cryptonote::blobdata blob;
+          tx_to_blob(ptx.tx, blob);
+          res.tx_blob_list.push_back(epee::string_tools::buff_to_hex_nodelimer(blob));
+        }
       }
 
       return true;

src/wallet/wallet_rpc_server_commands_defs.h

@@ -119,6 +119,8 @@ namespace wallet_rpc
       uint64_t unlock_time;
       std::string payment_id;
       bool get_tx_key;
+      bool do_not_relay;
+      bool get_tx_hex;
 
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE(destinations)
@@ -127,6 +129,8 @@ namespace wallet_rpc
         KV_SERIALIZE(unlock_time)
         KV_SERIALIZE(payment_id)
         KV_SERIALIZE(get_tx_key)
+        KV_SERIALIZE_OPT(do_not_relay, false)
+        KV_SERIALIZE_OPT(get_tx_hex, false)
       END_KV_SERIALIZE_MAP()
     };
 
@@ -136,12 +140,14 @@ namespace wallet_rpc
       std::string tx_key;
       std::list<std::string> amount_keys;
       uint64_t fee;
+      std::string tx_blob;
 
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE(tx_hash)
         KV_SERIALIZE(tx_key)
         KV_SERIALIZE(amount_keys)
         KV_SERIALIZE(fee)
+        KV_SERIALIZE(tx_blob)
       END_KV_SERIALIZE_MAP()
     };
   };
@@ -156,6 +162,8 @@ namespace wallet_rpc
       uint64_t unlock_time;
       std::string payment_id;
       bool get_tx_keys;
+      bool do_not_relay;
+      bool get_tx_hex;
 
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE(destinations)
@@ -164,6 +172,8 @@ namespace wallet_rpc
         KV_SERIALIZE(unlock_time)
         KV_SERIALIZE(payment_id)
         KV_SERIALIZE(get_tx_keys)
+        KV_SERIALIZE_OPT(do_not_relay, false)
+        KV_SERIALIZE_OPT(get_tx_hex, false)
       END_KV_SERIALIZE_MAP()
     };
 
@@ -182,12 +192,14 @@ namespace wallet_rpc
       std::list<std::string> tx_key_list;
       std::list<uint64_t> amount_list;
       std::list<uint64_t> fee_list;
+      std::list<std::string> tx_blob_list;
 
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE(tx_hash_list)
         KV_SERIALIZE(tx_key_list)
         KV_SERIALIZE(amount_list)
         KV_SERIALIZE(fee_list)
+        KV_SERIALIZE(tx_blob_list)
       END_KV_SERIALIZE_MAP()
     };
   };
@@ -197,9 +209,13 @@ namespace wallet_rpc
     struct request
     {
       bool get_tx_keys;
+      bool do_not_relay;
+      bool get_tx_hex;
 
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE(get_tx_keys)
+        KV_SERIALIZE_OPT(do_not_relay, false)
+        KV_SERIALIZE_OPT(get_tx_hex, false)
       END_KV_SERIALIZE_MAP()
     };
 
@@ -217,11 +233,13 @@ namespace wallet_rpc
       std::list<std::string> tx_hash_list;
       std::list<std::string> tx_key_list;
       std::list<uint64_t> fee_list;
+      std::list<std::string> tx_blob_list;
 
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE(tx_hash_list)
         KV_SERIALIZE(tx_key_list)
         KV_SERIALIZE(fee_list)
+        KV_SERIALIZE(tx_blob_list)
       END_KV_SERIALIZE_MAP()
     };
   };
@@ -237,6 +255,8 @@ namespace wallet_rpc
       std::string payment_id;
       bool get_tx_keys;
       uint64_t below_amount;
+      bool do_not_relay;
+      bool get_tx_hex;
 
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE(address)
@@ -246,6 +266,8 @@ namespace wallet_rpc
         KV_SERIALIZE(payment_id)
         KV_SERIALIZE(get_tx_keys)
         KV_SERIALIZE(below_amount)
+        KV_SERIALIZE_OPT(do_not_relay, false)
+        KV_SERIALIZE_OPT(get_tx_hex, false)
       END_KV_SERIALIZE_MAP()
     };
 
@@ -263,11 +285,13 @@ namespace wallet_rpc
       std::list<std::string> tx_hash_list;
       std::list<std::string> tx_key_list;
       std::list<uint64_t> fee_list;
+      std::list<std::string> tx_blob_list;
 
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE(tx_hash_list)
         KV_SERIALIZE(tx_key_list)
         KV_SERIALIZE(fee_list)
+        KV_SERIALIZE(tx_blob_list)
       END_KV_SERIALIZE_MAP()
     };
   };