vocabulary_policy.ex (2369B)
- # Pleroma: A lightweight social networking server
- # Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
- # SPDX-License-Identifier: AGPL-3.0-only
- defmodule Pleroma.Web.ActivityPub.MRF.VocabularyPolicy do
- @moduledoc "Filter activities which belong to certain activity vocabularies"
- @behaviour Pleroma.Web.ActivityPub.MRF.Policy
- @impl true
- def filter(%{"type" => "Undo", "object" => object} = activity) do
- with {:ok, _} <- filter(object) do
- {:ok, activity}
- else
- {:reject, _} = e -> e
- end
- end
- def filter(%{"type" => activity_type} = activity) do
- with accepted_vocabulary <- Pleroma.Config.get([:mrf_vocabulary, :accept]),
- rejected_vocabulary <- Pleroma.Config.get([:mrf_vocabulary, :reject]),
- {_, true} <-
- {:accepted,
- Enum.empty?(accepted_vocabulary) || Enum.member?(accepted_vocabulary, activity_type)},
- {_, false} <-
- {:rejected,
- length(rejected_vocabulary) > 0 && Enum.member?(rejected_vocabulary, activity_type)},
- {:ok, _} <- filter(activity["object"]) do
- {:ok, activity}
- else
- {:reject, _} = e -> e
- {:accepted, _} -> {:reject, "[VocabularyPolicy] #{activity_type} not in accept list"}
- {:rejected, _} -> {:reject, "[VocabularyPolicy] #{activity_type} in reject list"}
- end
- end
- def filter(activity), do: {:ok, activity}
- @impl true
- def describe,
- do: {:ok, %{mrf_vocabulary: Pleroma.Config.get(:mrf_vocabulary) |> Map.new()}}
- @impl true
- def config_description do
- %{
- key: :mrf_vocabulary,
- related_policy: "Pleroma.Web.ActivityPub.MRF.VocabularyPolicy",
- label: "MRF Vocabulary",
- description: "Filter activities which belong to certain activity vocabularies",
- children: [
- %{
- key: :accept,
- type: {:list, :string},
- description:
- "A list of ActivityStreams terms to accept. If empty, all supported activities are accepted.",
- suggestions: ["Create", "Follow", "Mention", "Announce", "Like"]
- },
- %{
- key: :reject,
- type: {:list, :string},
- description:
- "A list of ActivityStreams terms to reject. If empty, no activities are rejected.",
- suggestions: ["Create", "Follow", "Mention", "Announce", "Like"]
- }
- ]
- }
- end
- end