git.squeep.com Git - akkoma/blob - lib/pleroma/web/activity_pub/pipeline.ex

   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.ActivityPub.Pipeline do
   6   alias Pleroma.Activity
   7   alias Pleroma.Config
   8   alias Pleroma.Object
   9   alias Pleroma.Repo
  10   alias Pleroma.Web.ActivityPub.ActivityPub
  11   alias Pleroma.Web.ActivityPub.MRF
  12   alias Pleroma.Web.ActivityPub.ObjectValidator
  13   alias Pleroma.Web.ActivityPub.SideEffects
  14   alias Pleroma.Web.Federator
  15
  16   @spec common_pipeline(map(), keyword()) ::
  17           {:ok, Activity.t() | Object.t(), keyword()} | {:error, any()}
  18   def common_pipeline(object, meta) do
  19     case Repo.transaction(fn -> do_common_pipeline(object, meta) end) do
  20       {:ok, {:ok, activity, meta}} ->
  21         SideEffects.handle_after_transaction(meta)
  22         {:ok, activity, meta}
  23
  24       {:ok, value} ->
  25         value
  26
  27       {:error, e} ->
  28         {:error, e}
  29     end
  30   end
  31
  32   def do_common_pipeline(object, meta) do
  33     with {_, {:ok, validated_object, meta}} <-
  34            {:validate_object, ObjectValidator.validate(object, meta)},
  35          {_, {:ok, mrfd_object}} <- {:mrf_object, MRF.filter(validated_object)},
  36          {_, {:ok, activity, meta}} <-
  37            {:persist_object, ActivityPub.persist(mrfd_object, meta)},
  38          {_, {:ok, activity, meta}} <-
  39            {:execute_side_effects, SideEffects.handle(activity, meta)},
  40          {_, {:ok, _}} <- {:federation, maybe_federate(activity, meta)} do
  41       {:ok, activity, meta}
  42     else
  43       {:mrf_object, {:reject, _}} -> {:ok, nil, meta}
  44       e -> {:error, e}
  45     end
  46   end
  47
  48   defp maybe_federate(%Object{}, _), do: {:ok, :not_federated}
  49
  50   defp maybe_federate(%Activity{} = activity, meta) do
  51     with {:ok, local} <- Keyword.fetch(meta, :local) do
  52       do_not_federate = meta[:do_not_federate] || !Config.get([:instance, :federating])
  53
  54       if !do_not_federate && local do
  55         activity =
  56           if object = Keyword.get(meta, :object_data) do
  57             %{activity | data: Map.put(activity.data, "object", object)}
  58           else
  59             activity
  60           end
  61
  62         Federator.publish(activity)
  63         {:ok, :federated}
  64       else
  65         {:ok, :not_federated}
  66       end
  67     else
  68       _e -> {:error, :badarg}
  69     end
  70   end
  71 end