From b7032a1449596fe8c10cbb4f0c7405f506f54796 Mon Sep 17 00:00:00 2001
From: Aevann1 <randomname42029@gmail.com>
Date: Fri, 15 Jul 2022 15:17:39 +0200
Subject: [PATCH] RFCs are for incels

---
 files/helpers/sanitize.py | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/files/helpers/sanitize.py b/files/helpers/sanitize.py
index c5460d2d1..df3506e26 100644
--- a/files/helpers/sanitize.py
+++ b/files/helpers/sanitize.py
@@ -101,6 +101,32 @@ def allowed_attributes(tag, name, value):
 		return False
 
 
+def build_url_re(tlds, protocols):
+    """Builds the url regex used by linkifier
+
+    If you want a different set of tlds or allowed protocols, pass those in
+    and stomp on the existing ``url_re``::
+
+        from bleach import linkifier
+
+        my_url_re = linkifier.build_url_re(my_tlds_list, my_protocols)
+
+        linker = LinkifyFilter(url_re=my_url_re)
+
+    """
+    return re.compile(
+        r"""\(*  # Match any opening parentheses.
+        \b(?<![@.])(?:(?:{0}):/{{0,3}}(?:(?:\w+:)?\w+@)?)?  # http://
+        ([\w-]+\.)+(?:{1})(?:\:[0-9]+)?(?!\.\w)\b   # xx.yy.tld(:##)?
+        (?:[/?][^\s\|\\\^\[\]`<>"]*)?
+            # /path/zz (excluding "unsafe" chars from RFC 1738,
+            # except for # and ~, which happen in practice)
+        """.format(
+            "|".join(sorted(protocols)), "|".join(sorted(tlds))
+        ),
+        re.IGNORECASE | re.VERBOSE | re.UNICODE,
+    )
+
 url_re = build_url_re(tlds=TLDS, protocols=['http', 'https'])
 
 def callback(attrs, new=False):