From 3444bdae821fa363d4059432bdf5bfded8ceff05 Mon Sep 17 00:00:00 2001
From: Jordan Alliot <jordan.alliot@gmail.com>
Date: Thu, 5 Jan 2012 11:58:49 +0100
Subject: [PATCH] Check openssl extension for proxy

---
 src/Composer/Downloader/FileDownloader.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Composer/Downloader/FileDownloader.php b/src/Composer/Downloader/FileDownloader.php
index a96e64f1e..aeb655be4 100644
--- a/src/Composer/Downloader/FileDownloader.php
+++ b/src/Composer/Downloader/FileDownloader.php
@@ -64,6 +64,10 @@ abstract class FileDownloader implements DownloaderInterface
             // http(s):// is not supported in proxy
             $proxy = str_replace(array('http://', 'https://'), array('tcp://', 'ssl://'), $_SERVER['HTTP_PROXY']);
 
+            if (0 === strpos($proxy, 'ssl:') && !extension_loaded('openssl')) {
+                throw new \RuntimeException('You must enable the openssl extension to use a proxy over https');
+            }
+
             $ctx = stream_context_create(array(
                 'http' => array(
                     'proxy'           => $proxy,