defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do alias Pleroma.User @behaviour Pleroma.Web.ActivityPub.MRF defp check_accept(%{host: actor_host} = _actor_info, object) do accepts = Pleroma.Config.get([:mrf_simple, :accept]) cond do accepts == [] -> {:ok, object} actor_host == Pleroma.Config.get([Pleroma.Web.Endpoint, :url, :host]) -> {:ok, object} Enum.member?(accepts, actor_host) -> {:ok, object} true -> {:reject, nil} end end defp check_reject(%{host: actor_host} = _actor_info, object) do if Enum.member?(Pleroma.Config.get([:mrf_simple, :reject]), actor_host) do {:reject, nil} else {:ok, object} end end defp check_media_removal( %{host: actor_host} = _actor_info, %{"type" => "Create", "object" => %{"attachement" => child_attachment}} = object ) when length(child_attachment) > 0 do object = if Enum.member?(Pleroma.Config.get([:mrf_simple, :media_removal]), actor_host) do child_object = Map.delete(object["object"], "attachment") Map.put(object, "object", child_object) else object end {:ok, object} end defp check_media_removal(_actor_info, object), do: {:ok, object} defp check_media_nsfw( %{host: actor_host} = _actor_info, %{ "type" => "Create", "object" => %{"attachment" => child_attachment} = child_object } = object ) when length(child_attachment) > 0 do object = if Enum.member?(Pleroma.Config.get([:mrf_simple, :media_nsfw]), actor_host) do tags = (child_object["tag"] || []) ++ ["nsfw"] child_object = Map.put(child_object, "tags", tags) child_object = Map.put(child_object, "sensitive", true) Map.put(object, "object", child_object) else object end {:ok, object} end defp check_media_nsfw(_actor_info, object), do: {:ok, object} defp check_ftl_removal(%{host: actor_host} = _actor_info, object) do object = with true <- Enum.member?( Pleroma.Config.get([:mrf_simple, :federated_timeline_removal]), actor_host ), user <- User.get_cached_by_ap_id(object["actor"]), true <- "https://www.w3.org/ns/activitystreams#Public" in object["to"], true <- user.follower_address in object["cc"] do to = List.delete(object["to"], "https://www.w3.org/ns/activitystreams#Public") ++ [user.follower_address] cc = List.delete(object["cc"], user.follower_address) ++ ["https://www.w3.org/ns/activitystreams#Public"] object |> Map.put("to", to) |> Map.put("cc", cc) else _ -> object end {:ok, object} end @impl true def filter(object) do actor_info = URI.parse(object["actor"]) with {:ok, object} <- check_accept(actor_info, object), {:ok, object} <- check_reject(actor_info, object), {:ok, object} <- check_media_removal(actor_info, object), {:ok, object} <- check_media_nsfw(actor_info, object), {:ok, object} <- check_ftl_removal(actor_info, object) do {:ok, object} else _e -> {:reject, nil} end end end