70 lines
1.7 KiB
Elixir
70 lines
1.7 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2023 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
defmodule Pleroma.Web.ActivityPub.MRF.NoEmptyPolicy do
|
|
@moduledoc "Filter local activities which have no content"
|
|
@behaviour Pleroma.Web.ActivityPub.MRF.Policy
|
|
|
|
alias Pleroma.Web.Endpoint
|
|
|
|
@impl true
|
|
def filter(%{"actor" => actor} = object) do
|
|
with true <- is_local?(actor),
|
|
true <- is_eligible_type?(object),
|
|
true <- is_note?(object),
|
|
false <- has_attachment?(object),
|
|
true <- only_mentions?(object) do
|
|
{:reject, "[NoEmptyPolicy]"}
|
|
else
|
|
_ ->
|
|
{:ok, object}
|
|
end
|
|
end
|
|
|
|
def filter(object), do: {:ok, object}
|
|
|
|
defp is_local?(actor) do
|
|
if actor |> String.starts_with?("#{Endpoint.url()}") do
|
|
true
|
|
else
|
|
false
|
|
end
|
|
end
|
|
|
|
defp has_attachment?(%{
|
|
"object" => %{"type" => "Note", "attachment" => attachments}
|
|
})
|
|
when length(attachments) > 0,
|
|
do: true
|
|
|
|
defp has_attachment?(_), do: false
|
|
|
|
defp only_mentions?(%{"object" => %{"type" => "Note", "source" => source}}) do
|
|
source =
|
|
case source do
|
|
%{"content" => text} -> text
|
|
_ -> source
|
|
end
|
|
|
|
non_mentions =
|
|
source |> String.split() |> Enum.filter(&(not String.starts_with?(&1, "@"))) |> length
|
|
|
|
if non_mentions > 0 do
|
|
false
|
|
else
|
|
true
|
|
end
|
|
end
|
|
|
|
defp only_mentions?(_), do: false
|
|
|
|
defp is_note?(%{"object" => %{"type" => "Note"}}), do: true
|
|
defp is_note?(_), do: false
|
|
|
|
defp is_eligible_type?(%{"type" => type}) when type in ["Create", "Update"], do: true
|
|
defp is_eligible_type?(_), do: false
|
|
|
|
@impl true
|
|
def describe, do: {:ok, %{}}
|
|
end
|