MAGETWO-92162: [Backport for 2.2.x] Log File Validation

Author: Oleksandr Gorkun

dev/tests/functional/utils/log.php

@@ -5,15 +5,13 @@
  */
 
 if (!isset($_GET['name'])) {
-    throw new \InvalidArgumentException('The name of log file is required for getting logs.');
+    throw new \InvalidArgumentException(
+        'The name of log file is required for getting logs.'
+    );
 }
-
 $name = urldecode($_GET['name']);
 if (preg_match('/\.\.(\\\|\/)/', $name)) {
     throw new \InvalidArgumentException('Invalid log file name');
 }
-$logDir = '../../../../var/log';
-$logFile = realpath($logDir .'/' .$name);
-$file = file_get_contents($logFile);
 
-echo serialize($file);
+echo serialize(file_get_contents('../../../../var/log' .'/' .$name));