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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.ActivityPub.MRF.HellthreadPolicy do
   6   @behaviour Pleroma.Web.ActivityPub.MRF
   7
   8   @impl true
   9   def filter(%{"type" => "Create"} = object) do
  10     threshold = Pleroma.Config.get([:mrf_hellthread, :threshold])
  11     recipients = (object["to"] || []) ++ (object["cc"] || [])
  12
  13     if length(recipients) > threshold do
  14       {:reject, nil}
  15     else
  16       {:ok, object}
  17     end
  18   end
  19
  20   @impl true
  21   def filter(object), do: {:ok, object}
  22 end