MiczFlor#1309, MiczFlor#1451, MiczFlor#1691 Add user-agent to avoid 4…

…00-bad-requests from open.spotify.com.

htdocs/inc.viewFolderTree.php

@@ -116,18 +116,19 @@
 			// this is a new and easier way for loading spotify informations!
 			$uri = file_get_contents($subfolder."/spotify.txt");
 			$url = "https://open.spotify.com/oembed/?url=".trim($uri)."&format=json";
+			$headers = stream_context_create(array('http'=>array('method'=>'GET', 'header'=>'user-agent:Phoniebox')));
 
 			if (!file_exists($coverfile)) {
-				$str = file_get_contents($url);
+				$str = file_get_contents($url, false, $headers);
 				$json  = json_decode($str, true);
 
 				$cover = $json['thumbnail_url'];
-				$coverdl = file_get_contents($cover);
+				$coverdl = file_get_contents($cover, false, $headers);
 				file_put_contents($coverfile, $coverdl);
 			}
 
 			if (!file_exists($titlefile)) {
-				$str = file_get_contents($url);
+				$str = file_get_contents($url, false, $headers);
 				$json  = json_decode($str, true);
 
 				$title = $json['title'];