66 lines
1.8 KiB
Elixir
66 lines
1.8 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2021 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 Pleroma.Web.ActivityPub.MRF.Policy
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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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MRF.filter(subchain, 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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@impl true
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def describe, do: {:ok, %{}}
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@impl true
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def config_description do
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%{
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key: :mrf_subchain,
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related_policy: "Pleroma.Web.ActivityPub.MRF.SubchainPolicy",
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label: "MRF Subchain",
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description:
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"This policy processes messages through an alternate pipeline when a given message matches certain criteria." <>
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" All criteria are configured as a map of regular expressions to lists of policy modules.",
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children: [
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%{
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key: :match_actor,
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type: {:map, {:list, :string}},
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description: "Matches a series of regular expressions against the actor field",
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suggestions: [
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%{
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~r/https:\/\/example.com/s => [Pleroma.Web.ActivityPub.MRF.DropPolicy]
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}
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]
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}
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]
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}
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end
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end
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