49 lines
1.2 KiB
Elixir
49 lines
1.2 KiB
Elixir
defmodule Pleroma.Captcha.Kocaptcha do
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alias Pleroma.Captcha.Service
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@behaviour Service
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@ets __MODULE__.Ets
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@impl Service
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def new() do
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endpoint = Pleroma.Config.get!([__MODULE__, :endpoint])
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case Tesla.get(endpoint <> "/new") do
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{:error, _} ->
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%{error: "Kocaptcha service unavailable"}
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{:ok, res} ->
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json_resp = Poison.decode!(res.body)
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token = json_resp["token"]
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true = :ets.insert(@ets, {token, json_resp["md5"]})
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%{type: :kocaptcha, token: token, url: endpoint <> json_resp["url"]}
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end
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end
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@impl Service
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def validate(token, captcha) do
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with false <- is_nil(captcha),
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[{^token, saved_md5}] <- :ets.lookup(@ets, token),
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true <- :crypto.hash(:md5, captcha) |> Base.encode16() == String.upcase(saved_md5) do
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# Clear the saved value
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cleanup(token)
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true
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else
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_ -> false
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end
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end
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@impl Service
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def cleanup(token) do
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# Only delete the entry if it exists in the table, because ets:delete raises an exception if it does not
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case :ets.lookup(@ets, token) do
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[{^token, _}] -> :ets.delete(@ets, token)
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_ -> true
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end
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end
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end
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