From 3195122905f96502290407f6a04c4ed6ea94c3bc Mon Sep 17 00:00:00 2001
From: srsbiz <rk@srsbiz.pl>
Date: Mon, 31 Dec 2012 10:36:11 +0100
Subject: [PATCH] [HttpFoundation] Check if required shell functions for
 `FileBinaryMimeTypeGuesser` are not disabled

---
 .../HttpFoundation/File/MimeType/FileBinaryMimeTypeGuesser.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/HttpFoundation/File/MimeType/FileBinaryMimeTypeGuesser.php b/src/Symfony/Component/HttpFoundation/File/MimeType/FileBinaryMimeTypeGuesser.php
index 115d95deef..bf30fe8124 100644
--- a/src/Symfony/Component/HttpFoundation/File/MimeType/FileBinaryMimeTypeGuesser.php
+++ b/src/Symfony/Component/HttpFoundation/File/MimeType/FileBinaryMimeTypeGuesser.php
@@ -28,8 +28,9 @@ class FileBinaryMimeTypeGuesser implements MimeTypeGuesserInterface
      */
     public static function isSupported()
     {
-        return !strstr(PHP_OS, 'WIN');
+        return !defined('PHP_WINDOWS_VERSION_BUILD') && function_exists('passthru') && function_exists('escapeshellarg');
     }
+
     /**
      * Guesses the mime type of the file with the given path
      *