From d809b0b18e1f65acff6575886aa7e89ef3fb4c93 Mon Sep 17 00:00:00 2001
From: discomrade <83621080+discomrade@users.noreply.github.com>
Date: Sat, 31 Aug 2024 21:28:59 +0100
Subject: [PATCH] [bbcode] allow relative image links

This is useful for CSP when a site is hosted on multiple domains, such as a mirror.
---
 ext/bbcode/info.php | 1 +
 ext/bbcode/main.php | 1 +
 2 files changed, 2 insertions(+)

diff --git a/ext/bbcode/info.php b/ext/bbcode/info.php
index 218b4bba..f893ad86 100644
--- a/ext/bbcode/info.php
+++ b/ext/bbcode/info.php
@@ -34,6 +34,7 @@ class BBCodeInfo extends ExtensionInfo
    Link tags:
    <ul>
      <li>[img]url[/img]
+     <li>[img]site://_images/image.jpg[/img]
      <li>[url]<a href=\"{self::SHIMMIE_URL}\">https://code.shishnet.org/</a>[/url]
      <li>[url=<a href=\"{self::SHIMMIE_URL}\">https://code.shishnet.org/</a>]some text[/url]
      <li>[url]site://ext_doc/bbcode[/url]
diff --git a/ext/bbcode/main.php b/ext/bbcode/main.php
index 35dc0fd1..358a43d5 100644
--- a/ext/bbcode/main.php
+++ b/ext/bbcode/main.php
@@ -29,6 +29,7 @@ class BBCode extends FormatterExtension
         $text = preg_replace_ex('!\[url\]((?:https?|ftp|irc|mailto)://.*?)\[/url\]!s', '<a href="$1">$1</a>', $text);
         $text = preg_replace_ex('!\[email\](.*?)\[/email\]!s', '<a href="mailto:$1">$1</a>', $text);
         $text = preg_replace_ex('!\[img\](https?:\/\/.*?)\[/img\]!s', '<img alt="user image" src="$1">', $text);
+        $text = preg_replace_ex('!\[img\]site://(.*?)(#c\d+)?\[/img\]!s', '<img alt="user image" src="'.make_link('$1$2').'">', $text);
         $text = preg_replace_ex('!\[\[([^\|\]]+)\|([^\]]+)\]\]!s', '<a href="'.make_link('wiki/$1').'">$2</a>', $text);
         $text = preg_replace_ex('!\[\[([^\]]+)\]\]!s', '<a href="'.make_link('wiki/$1').'">$1</a>', $text);
         $text = preg_replace_ex("!\n\s*\n!", "\n\n", $text);