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100 lines
2.7 KiB
Elixir
100 lines
2.7 KiB
Elixir
defmodule PowLockout.Phoenix.ControllerCallbacks do
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@moduledoc """
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Controller callback logic for account lockout.
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### User is locked out
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Triggers on `Pow.Phoenix.SessionController.create/2`.
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When a user is locked out, the credentials will be treated as if they were
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invalid and the user will be redirected back to `Pow.Phoenix.Routes.`.
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### User successfully authenticates
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Triggers on `Pow.Phoenix.SessionController.create/2`.
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When a user successfully signs in, the failed attempts counter will be
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reset to zero.
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### Users unsuccessfully authenticates
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Triggers on `Pow.Phoenix.SessionController.create/2`.
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When a user unsuccessfully signs in, the failed attempts counter will be
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incremented, and the user may be locked out.
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See `PowLockout.Ecto.Schema` for more.
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"""
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use Pow.Extension.Phoenix.ControllerCallbacks.Base
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alias Plug.Conn
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alias Pow.Plug
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alias Phoenix.Controller
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alias PowLockout.Phoenix.{UnlockController, Mailer}
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alias PowLockout.Plug, as: PowLockoutPlug
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@doc false
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@impl true
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def before_respond(Pow.Phoenix.SessionController, :create, {result, conn}, _config) do
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PowLockoutPlug.user_for_attempts(conn)
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|> maybe_fail_attempt(conn, result)
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end
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defp maybe_fail_attempt(nil, conn, result),
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do: {result, conn}
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defp maybe_fail_attempt(%{locked_at: nil} = user, conn, :ok) do
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case PowLockoutPlug.succeed_attempt(conn, user) do
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{:error, _changeset, conn} ->
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{:halt, conn}
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{:ok, _user, conn} ->
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{:ok, conn}
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end
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end
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defp maybe_fail_attempt(_locked_user, conn, :ok) do
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{:error, invalid_credentials(conn)}
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end
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defp maybe_fail_attempt(user, conn, _error) do
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PowLockoutPlug.fail_attempt(conn, user)
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|> case do
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{:error, _changeset, conn} ->
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{:halt, conn}
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{:ok, %{locked_at: nil}, conn} ->
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{:error, invalid_credentials(conn)}
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{:ok, user, conn} ->
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send_unlock_email(user, conn)
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{:error, invalid_credentials(conn)}
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end
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end
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defp invalid_credentials(conn) do
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{:ok, conn} =
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Plug.clear_authenticated_user(conn)
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conn
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|> Conn.assign(:changeset, Plug.change_user(conn, conn.params["user"]))
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|> Controller.put_flash(:error, messages(conn).invalid_credentials(conn))
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|> Controller.render("new.html")
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end
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@doc """
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Sends an unlock e-mail to the user.
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"""
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@spec send_unlock_email(map(), Conn.t()) :: any()
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def send_unlock_email(user, conn) do
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url = unlock_url(conn, user.unlock_token)
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email = Mailer.email_unlock(conn, user, url)
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Pow.Phoenix.Mailer.deliver(conn, email)
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end
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defp unlock_url(conn, token) do
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routes(conn).url_for(conn, UnlockController, :show, [token])
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end
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end
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