From 4960e48b486f0da0099818a01892bd5d6f5e31f2 Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Sun, 17 Apr 2016 08:45:37 -0700
Subject: [PATCH] disabled opcodes fixes.

---
 lib/bcoin/script.js | 34 +++++++++++++++++-----------------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/lib/bcoin/script.js b/lib/bcoin/script.js
index 8d1b084f..1211b2bb 100644
--- a/lib/bcoin/script.js
+++ b/lib/bcoin/script.js
@@ -1529,33 +1529,33 @@ Script.prototype.interpret = function interpret(stack, flags, tx, index, version
       case opcodes.OP_SUBSTR: {
         if (stack.length < 3)
           throw new ScriptError('Stack too small.', op, ip);
-        v1 = Script.num(stack.pop(), flags).toNumber(); // end
+        v3 = Script.num(stack.pop(), flags).toNumber(); // end
         v2 = Script.num(stack.pop(), flags).toNumber(); // begin
-        v3 = stack.pop(); // string
-        if (v2 < 0 || v1 < v2)
+        v1 = stack.pop(); // string
+        if (v2 < 0 || v3 < v2)
           throw new ScriptError('String begin and end out of range.', op, ip);
-        if (v2 > v3.length)
-          v2 = v3.length;
-        if (v1 > v3.length)
-          v1 = v3.length;
-        stack.push(v3.slice(v2, v1));
+        if (v2 > v1.length)
+          v2 = v1.length;
+        if (v3 > v1.length)
+          v3 = v1.length;
+        stack.push(v1.slice(v2, v3));
         break;
       }
       case opcodes.OP_LEFT:
       case opcodes.OP_RIGHT: {
         if (stack.length < 2)
           throw new ScriptError('Stack too small.', op, ip);
-        v1 = Script.num(stack.pop(), flags).toNumber(); // size
-        v2 = stack.pop(); // string
-        if (v1 < 0)
+        v2 = Script.num(stack.pop(), flags).toNumber(); // size
+        v1 = stack.pop(); // string
+        if (v2 < 0)
           throw new ScriptError('String size is negative.', op, ip);
-        if (v1 > v2.length)
-          v1 = v2.length;
+        if (v2 > v1.length)
+          v2 = v1.length;
         if (op === opcodes.OP_LEFT)
-          v2 = v2.slice(0, v1);
+          v1 = v1.slice(0, v2);
         else
-          v2 = v2.slice(v2.length - v1);
-        stack.push(v2);
+          v1 = v1.slice(v1.length - v2);
+        stack.push(v1);
         break;
       }
       case opcodes.OP_INVERT: {
@@ -1563,7 +1563,7 @@ Script.prototype.interpret = function interpret(stack, flags, tx, index, version
           throw new ScriptError('Stack too small.', op, ip);
         val = utils.slice(stack.pop());
         for (i = 0; i < val.length; i++)
-          val[i] = ~val[i];
+          val[i] = ~val[i] & 0xff;
         stack.push(val);
         break;
       }