Avatar cache

Author: remdex

lhc_web/modules/lhwidgetrestapi/avatar.php

@@ -657,7 +657,14 @@ public function generate($avatarId, $sansEnv, $ver) {
     }
 }
 
-if (empty($Params['user_parameters']['id'])) {
+if ((string)$Params['user_parameters']['id'] == '') {
+    if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
+        header('HTTP/1.1 304 Not Modified');
+        die();
+    }
+    header('Content-type: image/svg+xml');
+    header('Cache-control: max-age='.(60*60*24*365));
+    header('Expires: '.gmdate(DATE_RFC1123,time()+60*60*24*365));
     echo '<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg
    xmlns:dc="http://purl.org/dc/elements/1.1/"
@@ -679,7 +686,7 @@ public function generate($avatarId, $sansEnv, $ver) {
       M75.586,54.102A121.429 121.429 0 0 1 150,28.571A121.429 121.429 0 0 1 271.429,150A121.429 121.429 0 0 1 245.898,224.414Z
       M224.414,245.898A121.429 121.429 0 0 1 150,271.429A121.429 121.429 0 0 1 28.571,150A121.429 121.429 0 0 1 54.102,75.586Z"/>
 </svg>';
-    header('Content-type: image/svg+xml');
+    exit;
 }
 
 $propsMapping = [