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49 lines
1.1 KiB
Elixir
49 lines
1.1 KiB
Elixir
defmodule PhilomenaWeb.CurrentBanPlug do
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@moduledoc """
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This plug loads the ban for the current user.
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## Example
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plug PhilomenaWeb.CurrentBanPlug
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"""
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alias Philomena.Bans
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alias Plug.Conn
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@doc false
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@spec init(any()) :: any()
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def init(opts), do: opts
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@doc false
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@spec call(Conn.t(), any()) :: Conn.t()
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def call(conn, _opts) do
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conn = Conn.fetch_cookies(conn)
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fingerprint = conn.cookies["_ses"]
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user = conn.assigns.current_user
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ip = conn.remote_ip
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ban = Bans.exists_for?(user, ip, fingerprint)
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cond do
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discourage?(ban) ->
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Conn.register_before_send(conn, fn conn ->
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:timer.sleep(normal_time())
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pass(error?(), conn)
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end)
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|> Conn.assign(:current_ban, nil)
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true ->
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Conn.assign(conn, :current_ban, ban)
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end
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end
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defp discourage?(%{note: note}) when is_binary(note), do: String.contains?(note, "discourage")
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defp discourage?(_ban), do: false
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defp normal_time, do: :rand.normal(5_000, 25_000_000) |> trunc() |> max(0)
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defp error?, do: :rand.uniform() < 0.05
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defp pass(false, conn), do: conn
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defp pass(_true, _conn), do: nil
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end
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