# Pleroma: A lightweight social networking server # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/> # SPDX-License-Identifier: AGPL-3.0-only defmodule Pleroma.Captcha.Kocaptcha do alias Pleroma.Captcha.Service @behaviour Service @impl Service def new do endpoint = Pleroma.Config.get!([__MODULE__, :endpoint]) case Tesla.get(endpoint <> "/new") do {:error, _} -> %{error: "Kocaptcha service unavailable"} {:ok, res} -> json_resp = Poison.decode!(res.body) %{ type: :kocaptcha, token: json_resp["token"], url: endpoint <> json_resp["url"], answer_data: json_resp["md5"] } end end @impl Service def validate(_token, captcha, answer_data) do # Here the token is unsed, because the unencrypted captcha answer is just passed to method if not is_nil(captcha) and :crypto.hash(:md5, captcha) |> Base.encode16() == String.upcase(answer_data), do: :ok, else: {:error, "Invalid CAPTCHA"} end end