From 659dcb6c591bce62375722ca7d11edb52a897b4f Mon Sep 17 00:00:00 2001
From: MarcoFalke <falke.marco@gmail.com>
Date: Thu, 6 Dec 2018 16:13:53 -0500
Subject: [PATCH] rpc: Avoid creating non-standard raw transactions

Github-Pull: #14890
Rebased-From: fa4c8679ed94f215ce895938f7c3c169a2ce101e
---
 src/rpc/rawtransaction.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
index 20d0d22bd..8f78847ad 100644
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -348,6 +348,15 @@ static UniValue verifytxoutproof(const JSONRPCRequest& request)
     return res;
 }
 
+
+    // Duplicate checking
+    std::set<CTxDestination> destinations;
+    bool has_data{false};
+
+            if (has_data) {
+                throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, duplicate key: data");
+            }
+            has_data = true;
 static UniValue createrawtransaction(const JSONRPCRequest& request)
 {
             RPCHelpMan{"createrawtransaction",