From 99eae85be4cc069fed135ecb5c9de6ef3bb10d38 Mon Sep 17 00:00:00 2001
From: Fred Woolard <woolardfa@appstate.edu>
Date: Sun, 30 May 2021 18:25:37 -0400
Subject: [PATCH] MDL-71777 antivirus: Use hash_from_path (sha1_file)

---
 lib/classes/antivirus/scanner.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/classes/antivirus/scanner.php b/lib/classes/antivirus/scanner.php
index c12d6a5771d..c20cb040afc 100644
--- a/lib/classes/antivirus/scanner.php
+++ b/lib/classes/antivirus/scanner.php
@@ -204,7 +204,7 @@ abstract class scanner {
         // Check for empty file, or file not uploaded.
         if (!empty($file) && filesize($file) !== false) {
             $content->filesize = display_size(filesize($file));
-            $content->contenthash = \file_storage::hash_from_string(file_get_contents($file));
+            $content->contenthash = \file_storage::hash_from_path($file);
             $content->contenttype = mime_content_type($file);
         } else {
             $content->filesize = $unknown;