From 995e80cb77e4143f1798c7bb47182a4dd0dbaac7 Mon Sep 17 00:00:00 2001
From: Kieran <kieran@harkin.me>
Date: Thu, 8 Sep 2022 16:13:24 +0100
Subject: [PATCH] 404 legacy links

---
 VoidCat/Controllers/IndexController.cs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/VoidCat/Controllers/IndexController.cs b/VoidCat/Controllers/IndexController.cs
index c866924..917daa5 100644
--- a/VoidCat/Controllers/IndexController.cs
+++ b/VoidCat/Controllers/IndexController.cs
@@ -1,4 +1,5 @@
-using Microsoft.AspNetCore.Mvc;
+using System.Text.RegularExpressions;
+using Microsoft.AspNetCore.Mvc;
 using Newtonsoft.Json;
 using VoidCat.Model;
 using VoidCat.Services.Abstractions;
@@ -30,6 +31,12 @@ public class IndexController : Controller
         var manifestPath = Path.Combine(_webHost.WebRootPath, "asset-manifest.json");
         if (!System.IO.File.Exists(manifestPath)) return StatusCode(500);
 
+        // old format hash, return 404
+        if (id.Length == 40 && Regex.IsMatch(id, @"[0-9a-z]{40}"))
+        {
+            Response.StatusCode = 404;
+        }
+        
         var jsonManifest = await System.IO.File.ReadAllTextAsync(manifestPath);
         return View("~/Pages/Index.cshtml", new IndexModel
         {