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ash_authentication
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Authentication extension for the Ash Framework.
Security advisory:
This version has known vulnerabilities.
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Files
lib/ash_authentication/strategies/totp/verify_action.ex
# SPDX-FileCopyrightText: 2022 Alembic Pty Ltd
#
# SPDX-License-Identifier: MIT
defmodule AshAuthentication.Strategy.Totp.VerifyAction do
@moduledoc """
Implementation of the TOTP verify action.
This module is used as the `run` implementation for the verify action,
which checks if a provided TOTP code is valid for a given user.
"""
use Ash.Resource.Actions.Implementation
alias Ash.ActionInput
alias AshAuthentication.Info
alias AshAuthentication.Strategy.Totp.Helpers
@doc false
@impl true
def run(input, _opts, context) do
user = ActionInput.get_argument(input, :user)
totp_code = ActionInput.get_argument(input, :code)
load_opts =
context
|> Ash.Context.to_opts(lazy?: true, reuse_values?: true)
with :ok <- Helpers.validate_totp_code(totp_code),
{:ok, strategy} <- Info.strategy_for_action(input.resource, input.action.name),
{:ok, user} <-
Ash.load(user, [strategy.read_secret_from, strategy.last_totp_at_field], load_opts) do
secret = Map.get(user, strategy.read_secret_from)
last_totp_at = Helpers.datetime_to_unix(Map.get(user, strategy.last_totp_at_field))
{:ok, Helpers.valid_totp?(secret, totp_code, strategy, since: last_totp_at)}
else
{:error, :invalid_format} -> {:ok, false}
other -> other
end
end
end