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[friendica.git] / src / Util / Network.php

diff --git a/src/Util/Network.php b/src/Util/Network.php
index 6694fd4f0c057f3fad686824233334457bf5957a..2c9949ee23bd93061304b0eeb883f5cafb4630c1 100644 (file)
--- a/src/Util/Network.php
+++ b/src/Util/Network.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * @copyright Copyright (C) 2020, Friendica
+ * @copyright Copyright (C) 2010-2021, the Friendica project
  *
  * @license GNU AGPL version 3 or any later version
  *
@@ -177,6 +177,35 @@ class Network
                return false;
        }
 
+       /**
+        * Checks if the provided url is on the list of domains where redirects are blocked.
+        * Returns true if it is or malformed URL, false if not.
+        *
+        * @param string $url The url to check the domain from
+        *
+        * @return boolean
+        */
+       public static function isRedirectBlocked(string $url)
+       {
+               $host = @parse_url($url, PHP_URL_HOST);
+               if (!$host) {
+                       return false;
+               }
+
+               $no_redirect_list = DI::config()->get('system', 'no_redirect_list', []);
+               if (!$no_redirect_list) {
+                       return false;
+               }
+
+               foreach ($no_redirect_list as $no_redirect) {
+                       if (fnmatch(strtolower($no_redirect), strtolower($host))) {
+                               return true;
+                       }
+               }
+
+               return false;
+       }
+
        /**
         * Check if email address is allowed to register here.
         *