Finetuning for #5102

Author: Till Brehm

interface/lib/classes/functions.inc.php

@@ -480,9 +480,9 @@ public function htmlentities($value) {
 
 	// Function to check paths before we use it as include. Use with absolute paths only.
 	public function check_include_path($path) {
-		if(strpos($path,'//')) die('Include path seems to be an URL: '.$this->htmlentities($path));
-		if(strpos($path,'..')) die('Two dots are not allowed in include path: '.$this->htmlentities($path));
-		if(!preg_match("/^[a-zA-Z0-9_\/\.\-]{1,}$/", $path)) die('Wrong chars in include path: '.$this->htmlentities($path));
+		if(strpos($path,'//') === false) die('Include path seems to be an URL: '.$this->htmlentities($path));
+		if(strpos($path,'..') === false) die('Two dots are not allowed in include path: '.$this->htmlentities($path));
+		if(!preg_match("/^[a-zA-Z0-9_\/\.\-]+$/", $path)) die('Wrong chars in include path: '.$this->htmlentities($path));
 		$path = realpath($path);
 		if($path == '') die('Include path does not exist.');
 		if(substr($path,0,strlen(ISPC_ROOT_PATH)) != ISPC_ROOT_PATH) die('Path '.$this->htmlentities($path).' is outside of ISPConfig installation directory.');
@@ -495,7 +495,8 @@ public function check_language($language) {
 		if(preg_match('/^[a-z]{2}$/',$language)) {
 			 return $language;
 		} else {
-			die('Invalid language string: '.$this->htmlentities($language));	
+			$app->log('Wrong language string: '.$this->htmlentities($language),1);
+			return 'en';	
 		}
 	}