71 lines
1.8 KiB
Elixir
71 lines
1.8 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Captcha do
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use GenServer
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@ets_options [:ordered_set, :private, :named_table, {:read_concurrency, true}]
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@doc false
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def start_link() do
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GenServer.start_link(__MODULE__, [], name: __MODULE__)
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end
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@doc false
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def init(_) do
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# Create a ETS table to store captchas
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ets_name = Module.concat(method(), Ets)
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^ets_name = :ets.new(Module.concat(method(), Ets), @ets_options)
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# Clean up old captchas every few minutes
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seconds_retained = Pleroma.Config.get!([__MODULE__, :seconds_retained])
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Process.send_after(self(), :cleanup, 1000 * seconds_retained)
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{:ok, nil}
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end
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@doc """
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Ask the configured captcha service for a new captcha
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"""
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def new() do
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GenServer.call(__MODULE__, :new)
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end
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@doc """
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Ask the configured captcha service to validate the captcha
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"""
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def validate(token, captcha) do
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GenServer.call(__MODULE__, {:validate, token, captcha})
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end
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@doc false
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def handle_call(:new, _from, state) do
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enabled = Pleroma.Config.get([__MODULE__, :enabled])
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if !enabled do
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{:reply, %{type: :none}, state}
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else
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{:reply, method().new(), state}
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end
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end
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@doc false
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def handle_call({:validate, token, captcha}, _from, state) do
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{:reply, method().validate(token, captcha), state}
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end
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@doc false
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def handle_info(:cleanup, state) do
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:ok = method().cleanup()
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seconds_retained = Pleroma.Config.get!([__MODULE__, :seconds_retained])
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# Schedule the next clenup
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Process.send_after(self(), :cleanup, 1000 * seconds_retained)
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{:noreply, state}
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end
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defp method, do: Pleroma.Config.get!([__MODULE__, :method])
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end
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