86 lines
2.3 KiB
Elixir
86 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.MRF do
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@callback filter(Map.t()) :: {:ok | :reject, Map.t()}
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def filter(policies, %{} = message) do
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policies
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|> Enum.reduce({:ok, message}, fn
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policy, {:ok, message} -> policy.filter(message)
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_, error -> error
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end)
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end
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def filter(%{} = object), do: get_policies() |> filter(object)
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def pipeline_filter(%{} = message, meta) do
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object = meta[:object_data]
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ap_id = message["object"]
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if object && ap_id do
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with {:ok, message} <- filter(Map.put(message, "object", object)) do
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meta = Keyword.put(meta, :object_data, message["object"])
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{:ok, Map.put(message, "object", ap_id), meta}
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else
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{err, message} -> {err, message, meta}
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end
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else
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{err, message} = filter(message)
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{err, message, meta}
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end
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end
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def get_policies do
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Pleroma.Config.get([:mrf, :policies], []) |> get_policies()
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end
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defp get_policies(policy) when is_atom(policy), do: [policy]
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defp get_policies(policies) when is_list(policies), do: policies
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defp get_policies(_), do: []
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@spec subdomains_regex([String.t()]) :: [Regex.t()]
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def subdomains_regex(domains) when is_list(domains) do
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for domain <- domains, do: ~r(^#{String.replace(domain, "*.", "(.*\\.)*")}$)i
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end
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@spec subdomain_match?([Regex.t()], String.t()) :: boolean()
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def subdomain_match?(domains, host) do
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Enum.any?(domains, fn domain -> Regex.match?(domain, host) end)
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end
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@callback describe() :: {:ok | :error, Map.t()}
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def describe(policies) do
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{:ok, policy_configs} =
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policies
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|> Enum.reduce({:ok, %{}}, fn
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policy, {:ok, data} ->
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{:ok, policy_data} = policy.describe()
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{:ok, Map.merge(data, policy_data)}
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_, error ->
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error
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end)
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mrf_policies =
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get_policies()
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|> Enum.map(fn policy -> to_string(policy) |> String.split(".") |> List.last() end)
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exclusions = Pleroma.Config.get([:mrf, :transparency_exclusions])
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base =
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%{
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mrf_policies: mrf_policies,
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exclusions: length(exclusions) > 0
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}
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|> Map.merge(policy_configs)
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{:ok, base}
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end
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def describe, do: get_policies() |> describe()
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end
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