From 3e782b7265faa69dc87689f66fb4247f9d90855f Mon Sep 17 00:00:00 2001
From: davidovski <david@davidovski.xyz>
Date: Wed, 9 Aug 2023 11:30:54 +0100
Subject: Add cell coord validation

---
 index.php | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'index.php')

diff --git a/index.php b/index.php
index 81a4b43..f7399af 100644
--- a/index.php
+++ b/index.php
@@ -15,9 +15,10 @@
 
     if ($_SERVER['REQUEST_METHOD'] === 'POST') {
         $pos = explode(",", $_POST["cell"]);
-        $grid[$pos[0]][$pos[1]] = $_POST["color"];
-
-        file_put_contents('array.json',  json_encode($grid));
+        if ($pos[0] >= 0 && $pos[1] >= 0 && $pos[0] < $GRID_SIZE && $pos[1] < $GRID_SIZE) {
+            $grid[$pos[0]][$pos[1]] = $_POST["color"];
+            file_put_contents('array.json',  json_encode($grid));
+        }
     }
 ?>
 
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