X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FNetwork%2FProbe.php;h=6359d8607a4699ea1b50f0fdf52d9c12150f8b55;hb=befc2af5043a3afde251721c0d27df695db1bb7e;hp=67db29a4f3536fe9b0e98332de9578ac55db8b8a;hpb=5232a8583f8d0ca5e6339e067814ff6f32dcf3fe;p=friendica.git

diff --git a/src/Network/Probe.php b/src/Network/Probe.php
index 67db29a4f3..6359d8607a 100644
--- a/src/Network/Probe.php
+++ b/src/Network/Probe.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
  *
@@ -258,7 +258,7 @@ class Probe
 	 * @return string profile link
 	 * @throws HTTPException\InternalServerErrorException
 	 */
-	public static function webfingerDfrn($webbie, &$hcard_url)
+	public static function webfingerDfrn(string $webbie, string &$hcard_url)
 	{
 		$profile_link = '';
 
@@ -1754,6 +1754,10 @@ class Probe
 	 */
 	public static function getFeedLink(string $url, string $body)
 	{
+		if (empty($body)) {
+			return '';
+		}
+
 		$doc = new DOMDocument();
 		if (!@$doc->loadHTML($body)) {
 			return false;
@@ -1801,26 +1805,28 @@ class Probe
 
 		$hrefParts = parse_url($href);
 
-		// Root path case (/path) including relative scheme case (//host/path)
-		if ($hrefParts['path'] && $hrefParts['path'][0] == '/') {
-			$path = $hrefParts['path'];
-		} else {
-			$path = $path . '/' . $hrefParts['path'];
-
-			// Resolve arbitrary relative path
-			// Lifted from https://www.php.net/manual/en/function.realpath.php#84012
-			$parts = array_filter(explode('/', $path), 'strlen');
-			$absolutes = array();
-			foreach ($parts as $part) {
-				if ('.' == $part) continue;
-				if ('..' == $part) {
-					array_pop($absolutes);
-				} else {
-					$absolutes[] = $part;
+		if (!empty($hrefParts['path'])) {
+			// Root path case (/path) including relative scheme case (//host/path)
+			if ($hrefParts['path'] && $hrefParts['path'][0] == '/') {
+				$path = $hrefParts['path'];
+			} else {
+				$path = $path . '/' . $hrefParts['path'];
+
+				// Resolve arbitrary relative path
+				// Lifted from https://www.php.net/manual/en/function.realpath.php#84012
+				$parts = array_filter(explode('/', $path), 'strlen');
+				$absolutes = array();
+				foreach ($parts as $part) {
+					if ('.' == $part) continue;
+					if ('..' == $part) {
+						array_pop($absolutes);
+					} else {
+						$absolutes[] = $part;
+					}
 				}
-			}
 
-			$path = '/' . implode('/', $absolutes);
+				$path = '/' . implode('/', $absolutes);
+			}
 		}
 
 		// Relative scheme case (//host/path)