From d8529b7477be1783bf47d5ec9c1bfe98b0bf4f07 Mon Sep 17 00:00:00 2001
From: Jerome Jutteau <jerome@jutteau.fr>
Date: Wed, 4 Dec 2019 23:14:17 +0100
Subject: [PATCH] [FIX] Better error handling with md5_outside

Signed-off-by: Jerome Jutteau <jerome@jutteau.fr>
---
 lib/functions.php | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/lib/functions.php b/lib/functions.php
index 4e22796..5a5316c 100644
--- a/lib/functions.php
+++ b/lib/functions.php
@@ -343,22 +343,30 @@ function jirafeau_hash_file($method, $file_path)
  */
 function jirafeau_md5_outside($file_path)
 {
-    $size = filesize($file_path);
-    if ($size === false) {
-        $size = 0;
-    }
+    $out = false;
     $handle = fopen($file_path, "r");
     if ($handle === false) {
         return false;
     }
+    $size = filesize($file_path);
+    if ($size === false) {
+        goto err;
+    }
     $first = fread($handle, 64);
     if ($first === false) {
-        return false;
+        goto err;
+    }
+    if (fseek($handle, $size < 64 ? 0 : $size - 64) == -1) {
+        goto err;
     }
-    fseek($handle, $size < 64 ? 0 : $size - 64);
     $last = fread($handle, 64);
+    if ($last === false) {
+        goto err;
+    }
+    $out = md5($first . $last . $size);
+    err:
     fclose($handle);
-    return md5($first . $last . $size);
+    return $out;
 }
 
 /**
-- 
2.34.1