# Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.MRF.ObjectAgePolicy do
require Pleroma.Constants
@moduledoc "Filter activities depending on their age"
- @behaviour Pleroma.Web.ActivityPub.MRF
+ @behaviour Pleroma.Web.ActivityPub.MRF.Policy
defp check_date(%{"object" => %{"published" => published}} = message) do
with %DateTime{} = now <- DateTime.utc_now(),
defp check_reject(message, actions) do
if :reject in actions do
- {:reject, nil}
+ {:reject, "[ObjectAgePolicy]"}
else
{:ok, message}
end
defp check_delist(message, actions) do
if :delist in actions do
with %User{} = user <- User.get_cached_by_ap_id(message["actor"]) do
- to = List.delete(message["to"], Pleroma.Constants.as_public()) ++ [user.follower_address]
- cc = List.delete(message["cc"], user.follower_address) ++ [Pleroma.Constants.as_public()]
+ to =
+ List.delete(message["to"] || [], Pleroma.Constants.as_public()) ++
+ [user.follower_address]
+
+ cc =
+ List.delete(message["cc"] || [], user.follower_address) ++
+ [Pleroma.Constants.as_public()]
message =
message
{:ok, message}
else
- # Unhandleable error: somebody is messing around, just drop the message.
_e ->
- {:reject, nil}
+ {:reject, "[ObjectAgePolicy] Unhandled error"}
end
else
{:ok, message}
defp check_strip_followers(message, actions) do
if :strip_followers in actions do
with %User{} = user <- User.get_cached_by_ap_id(message["actor"]) do
- to = List.delete(message["to"], user.follower_address)
- cc = List.delete(message["cc"], user.follower_address)
+ to = List.delete(message["to"] || [], user.follower_address)
+ cc = List.delete(message["cc"] || [], user.follower_address)
message =
message
{:ok, message}
else
- # Unhandleable error: somebody is messing around, just drop the message.
_e ->
- {:reject, nil}
+ {:reject, "[ObjectAgePolicy] Unhandled error"}
end
else
{:ok, message}
{:ok, %{mrf_object_age: mrf_object_age}}
end
+
+ @impl true
+ def config_description do
+ %{
+ key: :mrf_object_age,
+ related_policy: "Pleroma.Web.ActivityPub.MRF.ObjectAgePolicy",
+ label: "MRF Object Age",
+ description:
+ "Rejects or delists posts based on their timestamp deviance from your server's clock.",
+ children: [
+ %{
+ key: :threshold,
+ type: :integer,
+ description: "Required age (in seconds) of a post before actions are taken.",
+ suggestions: [172_800]
+ },
+ %{
+ key: :actions,
+ type: {:list, :atom},
+ description:
+ "A list of actions to apply to the post. `:delist` removes the post from public timelines; " <>
+ "`:strip_followers` removes followers from the ActivityPub recipient list ensuring they won't be delivered to home timelines; " <>
+ "`:reject` rejects the message entirely",
+ suggestions: [:delist, :strip_followers, :reject]
+ }
+ ]
+ }
+ end
end