From 7c18649859762a5c1760c4f2310e8ffe6966d729 Mon Sep 17 00:00:00 2001
From: Guangcong Luo <guangcongluo@gmail.com>
Date: Fri, 10 Nov 2023 00:45:22 +0000
Subject: [PATCH] Workaround for large cookies

The FCCDCF cookie frequently goes oversize, and has recently
been causing people to be unable to access PS because their total
cookie size is going over 8KB, above Apache's default maximum.

https://business.safety.google/adscookies/

It looks like this cookie is set by Google and, according to the
internet, sometimes gets filled with junk? I don't know of an
easy way to fix this, but I'm hoping this does it.
---
 index.template.html  |  3 ++-
 js/clean-cookies.php | 21 +++++++++++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)
 create mode 100644 js/clean-cookies.php

diff --git a/index.template.html b/index.template.html
index 3aac30a1e..cc3ba8c76 100644
--- a/index.template.html
+++ b/index.template.html
@@ -124,4 +124,5 @@ https://psim.us/dev
 <script src="//play.pokemonshowdown.com/js/battle-dex-search.js?"></script>
 <script src="//play.pokemonshowdown.com/js/search.js?"></script>
 
-<script src="//play.pokemonshowdown.com/data/aliases.js?" async="async"></script>
+<script src="//play.pokemonshowdown.com/data/aliases.js?" async></script>
+<script src="//play.pokemonshowdown.com/js/clean-cookies.php" async></script>
diff --git a/js/clean-cookies.php b/js/clean-cookies.php
new file mode 100644
index 000000000..10aa87c22
--- /dev/null
+++ b/js/clean-cookies.php
@@ -0,0 +1,21 @@
+<?php
+
+error_reporting(E_ALL);
+ini_set('display_errors', TRUE);
+ini_set('display_startup_errors', TRUE);
+
+$cleaned = false;
+
+foreach ($_COOKIE as $name => $value) {
+	if (strlen($value) > 3000) {
+		setcookie($name, '', time()-1000, '/', 'play.pokemonshowdown.com');
+		setcookie($name, '', time()-1000, '/', '.play.pokemonshowdown.com');
+		setcookie($name, '', time()-1000, '/', 'pokemonshowdown.com');
+		setcookie($name, '', time()-1000, '/', '.pokemonshowdown.com');
+		$cleaned = true;
+	}
+}
+
+if ($cleaned) {
+	echo 'alert("You had a cookie which was too big to handle and had to be deleted. If you had cookie settings, they may not be right.")';
+}