Replace MastodonAPIController.account_register/2 rate limiter

lib/pleroma/plugs/rate_limit_plug.ex

@@ -1,36 +0,0 @@
-# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Plugs.RateLimitPlug do
-  import Phoenix.Controller, only: [json: 2]
-  import Plug.Conn
-
-  def init(opts), do: opts
-
-  def call(conn, opts) do
-    enabled? = Pleroma.Config.get([:app_account_creation, :enabled])
-
-    case check_rate(conn, Map.put(opts, :enabled, enabled?)) do
-      {:ok, _count} -> conn
-      {:error, _count} -> render_error(conn)
-      %Plug.Conn{} = conn -> conn
-    end
-  end
-
-  defp check_rate(conn, %{enabled: true} = opts) do
-    max_requests = opts[:max_requests]
-    bucket_name = conn.remote_ip |> Tuple.to_list() |> Enum.join(".")
-
-    ExRated.check_rate(bucket_name, opts[:interval] * 1000, max_requests)
-  end
-
-  defp check_rate(conn, _), do: conn
-
-  defp render_error(conn) do
-    conn
-    |> put_status(:forbidden)
-    |> json(%{error: "Rate limit exceeded."})
-    |> halt()
-  end
-end

lib/pleroma/web/mastodon_api/mastodon_api_controller.ex

@@ -46,15 +46,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
 
   require Logger
 
-  plug(
-    Pleroma.Plugs.RateLimitPlug,
-    %{
-      max_requests: Config.get([:app_account_creation, :max_requests]),
-      interval: Config.get([:app_account_creation, :interval])
-    }
-    when action in [:account_register]
-  )
-
+  plug(Pleroma.Plugs.RateLimiter, :app_account_creation when action == :account_register)
   plug(Pleroma.Plugs.RateLimiter, :search when action in [:search, :search2, :account_search])
 
   @local_mastodon_name "Mastodon-Local"