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# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.MRF do
@callback filter(Map.t()) :: {:ok | :reject, Map.t()}
def filter(object) do
get_policies()
|> Enum.reduce({:ok, object}, fn
policy, {:ok, object} ->
policy.filter(object)
_, error ->
error
end)
end
def get_policies() do
Application.get_env(:pleroma, :instance, [])
|> Keyword.get(:rewrite_policy, [])
|> get_policies()
end
defp get_policies(policy) when is_atom(policy), do: [policy]
defp get_policies(policies) when is_list(policies), do: policies
defp get_policies(_), do: []
end
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