37 lines
994 B
Elixir
37 lines
994 B
Elixir
# 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
|