git.squeep.com Git - akkoma/blob - lib/pleroma/captcha/kocaptcha.ex

   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Captcha.Kocaptcha do
   6   import Pleroma.Web.Gettext
   7   alias Pleroma.Captcha.Service
   8   @behaviour Service
   9
  10   @impl Service
  11   def new do
  12     endpoint = Pleroma.Config.get!([__MODULE__, :endpoint])
  13
  14     case Tesla.get(endpoint <> "/new") do
  15       {:error, _} ->
  16         %{error: dgettext("errors", "Kocaptcha service unavailable")}
  17
  18       {:ok, res} ->
  19         json_resp = Jason.decode!(res.body)
  20
  21         %{
  22           type: :kocaptcha,
  23           token: json_resp["token"],
  24           url: endpoint <> json_resp["url"],
  25           answer_data: json_resp["md5"]
  26         }
  27     end
  28   end
  29
  30   @impl Service
  31   def validate(_token, captcha, answer_data) do
  32     # Here the token is unsed, because the unencrypted captcha answer is just passed to method
  33     if not is_nil(captcha) and
  34          :crypto.hash(:md5, captcha) |> Base.encode16() == String.upcase(answer_data),
  35        do: :ok,
  36        else: {:error, dgettext("errors", "Invalid CAPTCHA")}
  37   end
  38 end