From d66afcbaaa42be89edf57da761134b35e1b3f7cf Mon Sep 17 00:00:00 2001
From: myvesta <38690722+myvesta@users.noreply.github.com>
Date: Sun, 15 Aug 2021 14:20:13 +0200
Subject: [PATCH] Preventing CSRF in schedule / backup

---
 web/schedule/backup/index.php | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/web/schedule/backup/index.php b/web/schedule/backup/index.php
index 67c7b44ff..10b83a245 100644
--- a/web/schedule/backup/index.php
+++ b/web/schedule/backup/index.php
@@ -1,4 +1,14 @@
 <?php
+
+// Preventing CSRF
+$host_arr=explode(":", $_SERVER['HTTP_HOST']);
+$hostname=$host_arr[0];
+$port = $_SERVER['SERVER_PORT'];
+$expected_http_origin="https://".$hostname.":".$port;
+if ($_SERVER['HTTP_ORIGIN'] != $expected_http_origin) {
+    die ("Nope.");
+}
+
 // Init
 error_reporting(NULL);
 ob_start();