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ash_authentication
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3.0.3
Authentication extension for the Ash Framework.
Security advisory:
This version has known vulnerabilities.
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Files
lib/ash_authentication/plug/dispatcher.ex
# SPDX-FileCopyrightText: 2022 Alembic Pty Ltd
#
# SPDX-License-Identifier: MIT
defmodule AshAuthentication.Plug.Dispatcher do
@moduledoc """
Route requests and callbacks to the correct provider plugs.
"""
@behaviour Plug
alias AshAuthentication.Strategy
alias Plug.Conn
import AshAuthentication.Plug.Helpers, only: [get_authentication_result: 1]
import Strategy.RememberMe.Plug.Helpers, only: [maybe_put_remember_me_cookies: 2]
@type config :: {atom, Strategy.t(), module} | module
@unsent ~w[unset set set_chunked set_file]a
@doc false
@impl true
@spec init([config]) :: config
def init([config]), do: config
@doc """
Send the request to the correct strategy and then return the result.
"""
@impl true
@spec call(Conn.t(), config | any) :: Conn.t()
def call(conn, {phase, strategy, return_to}) do
activity = {Strategy.name(strategy), phase}
conn =
conn
|> drop_params(["glob"])
|> add_request_context()
strategy
|> Strategy.plug(phase, conn)
|> get_authentication_result()
|> maybe_put_remember_me_cookies(return_to)
|> case do
{conn, _} when conn.state not in @unsent ->
conn
{conn, :ok} ->
return_to.handle_success(conn, activity, nil, nil)
{conn, {:ok, user}} when is_binary(user.__metadata__.token) ->
return_to.handle_success(conn, activity, user, user.__metadata__.token)
{conn, {:ok, user}} ->
return_to.handle_success(conn, activity, user, nil)
{conn, :error} ->
return_to.handle_failure(conn, activity, nil)
{conn, {:error, reason}} ->
return_to.handle_failure(conn, activity, reason)
conn when conn.state not in @unsent ->
conn
conn ->
return_to.handle_failure(conn, activity, :no_authentication_result)
end
end
def call(conn, return_to) do
return_to.handle_failure(conn, {nil, nil}, :not_found)
end
defp drop_params(conn, keys), do: %{conn | params: Map.drop(conn.params, keys)}
defp add_request_context(conn) do
peer_data = Conn.get_peer_data(conn)
context =
%{
ash_authentication_request: %{
remote_ip: peer_data.address |> :inet.ntoa() |> to_string(),
remote_port: peer_data.port,
http_host: conn.host,
http_method: conn.method,
forwarded: Conn.get_req_header(conn, "forwarded"),
x_forwarded_for: Conn.get_req_header(conn, "x-forwarded-for")
}
}
Ash.PlugHelpers.set_context(conn, context)
end
end