[#1234] Merge remote-tracking branch 'remotes/upstream/develop' into 1234-mastodon...

[akkoma] / lib / pleroma / html.ex

diff --git a/lib/pleroma/html.ex b/lib/pleroma/html.ex
index 06e60cba33494cc0e8b3860b91b17d2af5e66ec1..3951f0f51beaf8490d30178e1a49ef85bc682737 100644 (file)
--- a/lib/pleroma/html.ex
+++ b/lib/pleroma/html.ex
@@ -282,3 +282,31 @@ defmodule Pleroma.HTML.Transform.MediaProxy do
   def scrub({_tag, children}), do: children
   def scrub(text), do: text
 end
+
+defmodule Pleroma.HTML.Scrubber.LinksOnly do
+  @moduledoc """
+  An HTML scrubbing policy which limits to links only.
+  """
+
+  @valid_schemes Pleroma.Config.get([:uri_schemes, :valid_schemes], [])
+
+  require HtmlSanitizeEx.Scrubber.Meta
+  alias HtmlSanitizeEx.Scrubber.Meta
+
+  Meta.remove_cdata_sections_before_scrub()
+  Meta.strip_comments()
+
+  # links
+  Meta.allow_tag_with_uri_attributes("a", ["href"], @valid_schemes)
+
+  Meta.allow_tag_with_this_attribute_values("a", "rel", [
+    "tag",
+    "nofollow",
+    "noopener",
+    "noreferrer",
+    "me"
+  ])
+
+  Meta.allow_tag_with_these_attributes("a", ["name", "title"])
+  Meta.strip_everything_not_covered()
+end