From 6d63eee26296f94a0ebd90a5686c03b256890e1f Mon Sep 17 00:00:00 2001
From: a1xd <68629610+a1xd@users.noreply.github.com>
Date: Thu, 23 Sep 2021 18:40:52 -0400
Subject: check number of points on LUT parse

---
 grapher/Models/Options/LUT/LUTPanelOptions.cs | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'grapher/Models')

diff --git a/grapher/Models/Options/LUT/LUTPanelOptions.cs b/grapher/Models/Options/LUT/LUTPanelOptions.cs
index 4357619..3690c76 100644
--- a/grapher/Models/Options/LUT/LUTPanelOptions.cs
+++ b/grapher/Models/Options/LUT/LUTPanelOptions.cs
@@ -135,17 +135,31 @@ namespace grapher.Models.Options.LUT
 
         private static (Vec2<float>[], int length) UserTextToPoints(string userText)
         {
+            const int MaxPoints = 256;
+
             if (string.IsNullOrWhiteSpace(userText))
             {
                 throw new ApplicationException("Text must be entered in text box to fill Look Up Table.");
             }
 
-            Vec2<float>[] points = new Vec2<float>[256];
+            Vec2<float>[] points = new Vec2<float>[MaxPoints];
 
             var userTextSplit = userText.Trim().Trim(';').Split(';');
             int index = 0;
             float lastX = 0;
 
+            int pointsCount = userTextSplit.Count();
+
+            if (pointsCount < 2)
+            {
+                throw new ApplicationException("At least 2 points required");
+            }
+
+            if (pointsCount > MaxPoints)
+            {
+                throw new ApplicationException($"Number of points exceeds max ({MaxPoints})");
+            }
+
             foreach(var pointEntry in userTextSplit)
             {
                 var pointSplit = pointEntry.Trim().Split(',');
-- 
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