40 lines
		
	
	
	
		
			1,016 B
		
	
	
	
		
			Elixir
		
	
	
	
	
	
			
		
		
	
	
			40 lines
		
	
	
	
		
			1,016 B
		
	
	
	
		
			Elixir
		
	
	
	
	
	
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.ActivityPub.MRF.SubchainPolicy do
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  alias Pleroma.Config
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  alias Pleroma.Web.ActivityPub.MRF
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  require Logger
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  @behaviour MRF
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  defp lookup_subchain(actor) do
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    with matches <- Config.get([:mrf_subchain, :match_actor]),
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         {match, subchain} <- Enum.find(matches, fn {k, _v} -> String.match?(actor, k) end) do
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      {:ok, match, subchain}
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    else
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      _e -> {:error, :notfound}
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    end
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  end
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  @impl true
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  def filter(%{"actor" => actor} = message) do
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    with {:ok, match, subchain} <- lookup_subchain(actor) do
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      Logger.debug(
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        "[SubchainPolicy] Matched #{actor} against #{inspect(match)} with subchain #{
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          inspect(subchain)
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        }"
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      )
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      subchain
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      |> MRF.filter(message)
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    else
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      _e -> {:ok, message}
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    end
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  end
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  @impl true
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  def filter(message), do: {:ok, message}
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end
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