From d752ba86c1872f64a4641cf77008826d32bde65f Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Wed, 8 Oct 2014 16:29:45 -0700
Subject: Add SCRIPT_VERIFY_SIGPUSHONLY (BIP62 rule 2)

---
 src/script/interpreter.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/script/interpreter.cpp')

diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp
index cd73b88210..e463de8cc2 100644
--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@@ -980,6 +980,10 @@ bool SignatureChecker::CheckSig(const vector<unsigned char>& vchSigIn, const vec
 
 bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, unsigned int flags, const BaseSignatureChecker& checker)
 {
+    if ((flags & SCRIPT_VERIFY_SIGPUSHONLY) != 0 && !scriptSig.IsPushOnly()) {
+        return false;
+    }
+
     vector<vector<unsigned char> > stack, stackCopy;
     if (!EvalScript(stack, scriptSig, flags, checker))
         return false;
-- 
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