75 lines
		
	
	
	
		
			2.3 KiB
		
	
	
	
		
			Elixir
		
	
	
	
	
	
			
		
		
	
	
			75 lines
		
	
	
	
		
			2.3 KiB
		
	
	
	
		
			Elixir
		
	
	
	
	
	
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.ActivityPub.Pipeline do
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  alias Pleroma.Activity
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  alias Pleroma.Config
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  alias Pleroma.Object
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  alias Pleroma.Repo
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  alias Pleroma.Web.ActivityPub.ActivityPub
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  alias Pleroma.Web.ActivityPub.MRF
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  alias Pleroma.Web.ActivityPub.ObjectValidator
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  alias Pleroma.Web.ActivityPub.SideEffects
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  alias Pleroma.Web.Federator
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  @spec common_pipeline(map(), keyword()) ::
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          {:ok, Activity.t() | Object.t(), keyword()} | {:error, any()}
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  def common_pipeline(object, meta) do
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    case Repo.transaction(fn -> do_common_pipeline(object, meta) end) do
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      {:ok, {:ok, activity, meta}} ->
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        SideEffects.handle_after_transaction(meta)
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        {:ok, activity, meta}
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      {:ok, value} ->
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        value
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      {:error, e} ->
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        {:error, e}
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      {:reject, e} ->
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        {:reject, e}
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    end
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  end
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  def do_common_pipeline(object, meta) do
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    with {_, {:ok, validated_object, meta}} <-
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           {:validate_object, ObjectValidator.validate(object, meta)},
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         {_, {:ok, mrfd_object, meta}} <-
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           {:mrf_object, MRF.pipeline_filter(validated_object, meta)},
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         {_, {:ok, activity, meta}} <-
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           {:persist_object, ActivityPub.persist(mrfd_object, meta)},
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         {_, {:ok, activity, meta}} <-
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           {:execute_side_effects, SideEffects.handle(activity, meta)},
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         {_, {:ok, _}} <- {:federation, maybe_federate(activity, meta)} do
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      {:ok, activity, meta}
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    else
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      {:mrf_object, {:reject, message, _}} -> {:reject, message}
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      e -> {:error, e}
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    end
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  end
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  defp maybe_federate(%Object{}, _), do: {:ok, :not_federated}
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  defp maybe_federate(%Activity{} = activity, meta) do
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    with {:ok, local} <- Keyword.fetch(meta, :local) do
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      do_not_federate = meta[:do_not_federate] || !Config.get([:instance, :federating])
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      if !do_not_federate && local do
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        activity =
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          if object = Keyword.get(meta, :object_data) do
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            %{activity | data: Map.put(activity.data, "object", object)}
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          else
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            activity
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          end
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        Federator.publish(activity)
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        {:ok, :federated}
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      else
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        {:ok, :not_federated}
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      end
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    else
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      _e -> {:error, :badarg}
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    end
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  end
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end
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