+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
defmodule Pleroma.Web.ActivityPub.MRF.RejectNonPublic do
+ @moduledoc "Rejects non-public (followers-only, direct) activities"
+
+ alias Pleroma.Config
alias Pleroma.User
+
@behaviour Pleroma.Web.ActivityPub.MRF
- def filter(object) do
- if object["type"] == "Create" do
- user = User.get_by_ap_id(object["actor"])
- public = "https://www.w3.org/ns/activitystreams#Public"
-
- #Determine visibility
- visibility =
- cond do
- #Public
- public in object["to"] -> "p"
- #Unlisted
- public in object["cc"] -> "u"
- #Followers-only
- user.follower_address in object["to"] -> "f"
- #Direct
- true -> "d"
- end
-
- {flag, object_out} =
- case visibility do
- "p" -> {:ok, object}
- "u" -> {:ok, object}
- _ -> {:reject, nil}
- end
-
- {flag, object_out}
- else
- {:ok, object}
+ require Pleroma.Constants
+
+ @impl true
+ def filter(%{"type" => "Create"} = object) do
+ user = User.get_cached_by_ap_id(object["actor"])
+
+ # Determine visibility
+ visibility =
+ cond do
+ Pleroma.Constants.as_public() in object["to"] -> "public"
+ Pleroma.Constants.as_public() in object["cc"] -> "unlisted"
+ user.follower_address in object["to"] -> "followers"
+ true -> "direct"
+ end
+
+ policy = Config.get(:mrf_rejectnonpublic)
+
+ cond do
+ visibility in ["public", "unlisted"] ->
+ {:ok, object}
+
+ visibility == "followers" and Keyword.get(policy, :allow_followersonly) ->
+ {:ok, object}
+
+ visibility == "direct" and Keyword.get(policy, :allow_direct) ->
+ {:ok, object}
+
+ true ->
+ {:reject, "[RejectNonPublic] visibility: #{visibility}"}
end
end
+
+ @impl true
+ def filter(object), do: {:ok, object}
+
+ @impl true
+ def describe,
+ do: {:ok, %{mrf_rejectnonpublic: Config.get(:mrf_rejectnonpublic) |> Enum.into(%{})}}
end