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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.ActivityPub.MRF.NormalizeMarkup do
   6   @moduledoc "Scrub configured hypertext markup"
   7   alias Pleroma.HTML
   8
   9   @behaviour Pleroma.Web.ActivityPub.MRF
  10
  11   def filter(%{"type" => "Create", "object" => child_object} = object) do
  12     scrub_policy = Pleroma.Config.get([:mrf_normalize_markup, :scrub_policy])
  13
  14     content =
  15       child_object["content"]
  16       |> HTML.filter_tags(scrub_policy)
  17
  18     object = put_in(object, ["object", "content"], content)
  19
  20     {:ok, object}
  21   end
  22
  23   def filter(object), do: {:ok, object}
  24
  25   def describe, do: {:ok, %{}}
  26 end