From 3e97458ee28c79c16f7c792d96c01c44ea2356ed Mon Sep 17 00:00:00 2001
From: floppydiskette <floppydisk@hyprcat.net>
Date: Fri, 27 Dec 2024 18:47:40 +0000
Subject: rudimentary "spam filter"

---
 app/Http/Middleware/GuestbookValidate.php | 37 +++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 app/Http/Middleware/GuestbookValidate.php

(limited to 'app/Http/Middleware/GuestbookValidate.php')

diff --git a/app/Http/Middleware/GuestbookValidate.php b/app/Http/Middleware/GuestbookValidate.php
new file mode 100644
index 0000000..b2218bb
--- /dev/null
+++ b/app/Http/Middleware/GuestbookValidate.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+class GuestbookValidate
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Closure(\Illuminate\Http\Request): (\Symfony\Component\HttpFoundation\Response)  $next
+     */
+    public function handle(Request $request, Closure $next): Response
+    {
+        if (
+            !$request->validate([
+                'name' => 'required',
+                'message' => 'required'
+            ]) ||
+            $this->containsUrl($request->get('message')) ||
+            $this->containsUrl($request->get('name'))
+        ) {
+            return response()->view('errors.guestbook-invalid', [], 400);
+        }
+        return $next($request);
+    }
+
+    public function containsUrl($str) {
+        $matches = [];
+        $pattern = '/\b(?:https?|ftp|www)(:\/\/)*[-A-Z0-9+&@#\/%?=~_|$!:,.;]*[A-Z0-9+&@#\/%=~_|$]/i';
+        preg_match_all($pattern, $str, $matches);
+        return count($matches[0]);
+    }
+}
-- 
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