From aeb784e398b2608ce0028de9a6514f508ad69d19 Mon Sep 17 00:00:00 2001
From: Jeremiah Buddenhagen <bitspill+git@bitspill.net>
Date: Fri, 23 Feb 2018 15:28:37 -0800
Subject: [PATCH] Transaction floData length limits

---
 src/validation.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/validation.cpp b/src/validation.cpp
index f989a6afe..0a3bc343d 100755
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -461,6 +461,16 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool
         return state.DoS(0, false, REJECT_NONSTANDARD, "no-witness-yet", true);
     }
 
+    if (tx.nVersion >= 2) {
+        int maxCommentLen = 528;
+        if (witnessEnabled) {
+            maxCommentLen = 1040;
+        }
+        if (tx.strFloData.length() > maxCommentLen) {
+            return state.DoS(0, false, REJECT_INVALID, "flo-data-too-large");
+        }
+    }
+
     // Rather not work on nonstandard transactions (unless -testnet/-regtest)
     std::string reason;
     if (fRequireStandard && !IsStandardTx(tx, reason, witnessEnabled))