From ba20d8d5af9b132a32e953ad44a210aa52985d93 Mon Sep 17 00:00:00 2001
From: Shish <shish@shishnet.org>
Date: Tue, 27 Aug 2019 00:09:35 +0100
Subject: [PATCH] filter non-ascii domains

---
 ext/rule34/main.php | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/ext/rule34/main.php b/ext/rule34/main.php
index 3e9c650c..a3330498 100644
--- a/ext/rule34/main.php
+++ b/ext/rule34/main.php
@@ -68,6 +68,17 @@ class Rule34 extends Extension
     {
     }
 
+    public function onSourceSet(SourceSetEvent $event)
+    {
+        // Maybe check for 404?
+        if (empty($event->source)) {
+            return;
+        }
+        if (!preg_match("/^(https?:\/\/)?[a-zA-Z0-9\.\-]+(\/.*)?$/", $event->source)) {
+            throw new SCoreException("Invalid source URL");
+        }
+    }
+
     public function onPageRequest(PageRequestEvent $event)
     {
         global $database, $page, $user;