From 4cc35a28390d201633c4a55a37314b7b64ccd78d Mon Sep 17 00:00:00 2001
From: William Jacoby <bonelifer@gmail.com>
Date: Mon, 5 Oct 2026 09:20:38 -0500
Subject: [PATCH] Require phpBB 3.3.19

Refuse to enable on phpBB older than 3.3.19 or below the extension's minimum PHP version, showing a clear reason instead of a generic error. phpBB 3.3.17 through 3.3.19 fixed a series of security issues, so older boards should update phpBB first.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 ext.php                                   | 32 ++++++++++++++++-
 language/en/install_editedpostsunread.php | 43 +++++++++++++++++++++++
 2 files changed, 74 insertions(+), 1 deletion(-)
 create mode 100644 language/en/install_editedpostsunread.php

diff --git a/ext.php b/ext.php
index ad68734..d68f1cc 100644
--- a/ext.php
+++ b/ext.php
@@ -33,13 +33,23 @@ class ext extends \phpbb\extension\base
 	const NEW_NAMESPACE = '\\phpbbmodders\\editedpostsunread\\';
 
 	/**
+	 * Refuse to enable below the minimum phpBB and PHP versions.
+	 *
 	 * Refuse to enable while the old copy is still enabled; both would run
 	 * at once and the old one's data can't be moved while it's in use.
 	 *
-	 * @return bool|array True if enableable, otherwise an array of reasons
+	 * @return bool|string|array True if enableable, otherwise a reason string or array of reasons
 	 */
 	public function is_enableable()
 	{
+		if (!$this->check_phpbb_version() || !$this->check_php_version())
+		{
+			$language = $this->container->get('language');
+			$language->add_lang('install_editedpostsunread', 'phpbbmodders/editedpostsunread');
+
+			return $language->lang('EDITEDPOSTSUNREAD_NOT_ENABLEABLE');
+		}
+
 		if ($this->container->get('ext.manager')->is_enabled(self::OLD_EXT_NAME))
 		{
 			return ['Disable the old "' . self::OLD_EXT_NAME . '" extension first (keep its data, do not delete it).'];
@@ -48,6 +58,26 @@ public function is_enableable()
 		return true;
 	}
 
+	/**
+	 * Require phpBB 3.3.19
+	 *
+	 * @return bool
+	 */
+	public function check_phpbb_version()
+	{
+		return phpbb_version_compare(PHPBB_VERSION, '3.3.19', '>=');
+	}
+
+	/**
+	 * Require PHP 7.4
+	 *
+	 * @return bool
+	 */
+	public function check_php_version()
+	{
+		return PHP_VERSION_ID >= 70400;
+	}
+
 	/**
 	 * Move an old install's data to the new name, then enable as usual.
 	 *
diff --git a/language/en/install_editedpostsunread.php b/language/en/install_editedpostsunread.php
new file mode 100644
index 0000000..b614da1
--- /dev/null
+++ b/language/en/install_editedpostsunread.php
@@ -0,0 +1,43 @@
+<?php
+/**
+ *
+ * Mark Edited Posts Unread extension for the phpBB Forum Software package
+ *
+ * @copyright (c) 2015 RMcGirr83
+ * @copyright (c) 2026, phpBB Modders, https://www.phpbbmodders.com/
+ * @license GNU General Public License, version 2 (GPL-2.0)
+ *
+ */
+
+/**
+ * DO NOT CHANGE
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+// DEVELOPERS PLEASE NOTE
+//
+// All language files should use UTF-8 as their encoding and the files must not contain a BOM.
+//
+// Placeholders can now contain order information, e.g. instead of
+// 'Page %s of %s' you can (and should) write 'Page %1$s of %2$s', this allows
+// translators to re-order the output of data while ensuring it remains correct
+//
+// You do not need this where single placeholders are used, e.g. 'Message %d' is fine
+// equally where a string contains only two placeholders which are used to wrap text
+// in a url you again do not need to specify an order e.g., 'Click %sHERE%s' is fine
+//
+// Some characters you may want to copy&paste:
+// ’ » “ ” …
+//
+
+$lang = array_merge($lang, [
+	'EDITEDPOSTSUNREAD_NOT_ENABLEABLE'	=> 'Mark Edited Posts Unread could not be enabled. The minimum requirements of phpBB 3.3.19 and/or PHP 7.4.0 were not satisfied.',
+]);