* Filemanager/Sharing: fix lost session on first load in sharing links with Firefox

api/anon_images.php

@@ -15,12 +15,18 @@ use EGroupware\Api;
 
 $GLOBALS['egw_info'] = array('flags' => array(
 	'disable_Template_class'  => True,
-	'login'                   => True,
-	'currentapp'              => 'login',
+	'noheader'                => True,
+	// misuse session creation callback to send the image, in case we have no session
+	'autocreate_session_callback' => 'send_image',
+	'currentapp'              => 'api',
 ));
 
 require('../header.inc.php');
 
+send_image();
+
+function send_image()
+{
 	$path = $GLOBALS['egw_info']['server']['files_dir'] . '/anon-images';
 
 	if (!file_exists($path) || empty($_GET['src']) ||
@@ -42,3 +48,5 @@ else
 		fpassthru($fp);
 		fclose($fp);
 	}
+	exit;
+}