From 446149c9ef8118d5a5df6bfd6dd8207d612ff759 Mon Sep 17 00:00:00 2001
From: printempw <h@prinzeugen.net>
Date: Tue, 27 Sep 2016 22:15:51 +0800
Subject: [PATCH] fix url() function when using CDN

---
 app/Providers/AppServiceProvider.php | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/app/Providers/AppServiceProvider.php b/app/Providers/AppServiceProvider.php
index d1720d83..2441ed07 100644
--- a/app/Providers/AppServiceProvider.php
+++ b/app/Providers/AppServiceProvider.php
@@ -15,7 +15,13 @@ class AppServiceProvider extends ServiceProvider
      */
     public function boot()
     {
-        //
+        // replace HTTP_HOST with site url setted in options to prevent CDN source problems
+        preg_match('/https?:\/\/([^\/]+)\/?.*/', option('site_url'), $host);
+
+        // check if host is valid
+        if (isset($host[1]) && '' === preg_replace('/(?:^\[)?[a-zA-Z0-9-:\]_]+\.?/', '', $host[1])) {
+            $this->app['request']->headers->set('host', $host[1]);
+        };
     }
 
     /**