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user_allow_list_policy.ex
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user_allow_list_policy.ex
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# Pleroma: A lightweight social networking server
# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.MRF.UserAllowListPolicy do
alias Pleroma.Config
@moduledoc "Accept-list of users from specified instances"
@behaviour Pleroma.Web.ActivityPub.MRF.Policy
defp filter_by_list(object, []), do: {:ok, object}
defp filter_by_list(%{"actor" => actor} = object, allow_list) do
if actor in allow_list do
{:ok, object}
else
{:reject, "[UserAllowListPolicy] #{actor} not in the list"}
end
end
@impl true
def filter(%{"actor" => actor} = object) do
actor_info = URI.parse(actor)
allow_list =
Config.get(
[:mrf_user_allowlist, actor_info.host],
[]
)
filter_by_list(object, allow_list)
end
def filter(object), do: {:ok, object}
@impl true
def describe do
mrf_user_allowlist =
Config.get([:mrf_user_allowlist], [])
|> Map.new(fn {k, v} -> {k, length(v)} end)
{:ok, %{mrf_user_allowlist: mrf_user_allowlist}}
end
# TODO: change way of getting settings on `lib/pleroma/web/activity_pub/mrf/user_allow_list_policy.ex:18` to use `hosts` subkey
# @impl true
# def config_description do
# %{
# key: :mrf_user_allowlist,
# related_policy: "Pleroma.Web.ActivityPub.MRF.UserAllowListPolicy",
# description: "Accept-list of users from specified instances",
# children: [
# %{
# key: :hosts,
# type: :map,
# description:
# "The keys in this section are the domain names that the policy should apply to." <>
# " Each key should be assigned a list of users that should be allowed " <>
# "through by their ActivityPub ID",
# suggestions: [%{"example.org" => ["https://example.org/users/admin"]}]
# }
# ]
# }
# end
end

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