From 5b75c477841fa463aad9c6e6d95a98b50ce14dd3 Mon Sep 17 00:00:00 2001
From: Andrew Chow <achow101-github@achow101.com>
Date: Tue, 30 May 2017 15:42:10 -0700
Subject: Add a valid opcode sanity check to CScript

Added a function in CScript that checks if the script contains valid opcodes.

Add a test for that function
---
 src/script/script.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

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

diff --git a/src/script/script.cpp b/src/script/script.cpp
index 70eb8a139..a71fee19c 100644
--- a/src/script/script.cpp
+++ b/src/script/script.cpp
@@ -267,3 +267,15 @@ std::string CScriptWitness::ToString() const
     }
     return ret + ")";
 }
+
+bool CScript::HasValidOps() const
+{
+    CScript::const_iterator it = begin();
+    while (it < end()) {
+        opcodetype opcode;
+        if (!GetOp(it, opcode) || opcode > 0xb9) {
+            return false;
+        }
+    }
+    return true;
+}
-- 
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