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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2019 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" => activity_type} = object) when activity_type == "Create" do
  12     scrub_policy = Pleroma.Config.get([:mrf_normalize_markup, :scrub_policy])
  13
  14     child = object["object"]
  15
  16     content =
  17       child["content"]
  18       |> HTML.filter_tags(scrub_policy)
  19
  20     child = Map.put(child, "content", content)
  21
  22     object = Map.put(object, "object", child)
  23
  24     {:ok, object}
  25   end
  26
  27   def filter(object), do: {:ok, object}
  28 end