X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FUtil%2FNetwork.php;h=0b10687c9d5a64f3a5e8ceef166d04002cec7293;hb=dee1899628380998d3a284e41bfc49ce0737dd2f;hp=6694fd4f0c057f3fad686824233334457bf5957a;hpb=fc2340d4afe6466c58e35afd64fe9010bf185b04;p=friendica.git

diff --git a/src/Util/Network.php b/src/Util/Network.php
index 6694fd4f0c..0b10687c9d 100644
--- 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.
 	 *
@@ -519,4 +548,15 @@ class Network
 			exit;
 		}
 	}
+
+	/**
+	 * Check if the given URL is a local link
+	 *
+	 * @param string $url 
+	 * @return bool 
+	 */
+	public static function isLocalLink(string $url)
+	{
+		return (strpos(Strings::normaliseLink($url), Strings::normaliseLink(DI::baseUrl())) !== false);
+	}
 }