auth_helper.ex
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auth_helper.ex
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	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	defmodule Pleroma.Helpers.AuthHelper do
	alias Pleroma.Web.Plugs.OAuthScopesPlug
	alias Plug.Conn

	import Plug.Conn

	@oauth_token_session_key :oauth_token

	@doc """
	Skips OAuth permissions (scopes) checks, assigns nil `:token`.
	Intended to be used with explicit authentication and only when OAuth token cannot be determined.
	"""
	def skip_oauth(conn) do
	conn
	\|> assign(:token, nil)
	\|> OAuthScopesPlug.skip_plug()
	end

	@doc "Drops authentication info from connection"
	def drop_auth_info(conn) do
	# To simplify debugging, setting a private variable on `conn` if auth info is dropped
	conn
	\|> assign(:user, nil)
	\|> assign(:token, nil)
	\|> put_private(:authentication_ignored, true)
	end

	@doc "Gets OAuth token string from session"
	def get_session_token(%Conn{} = conn) do
	get_session(conn, @oauth_token_session_key)
	end

	@doc "Updates OAuth token string in session"
	def put_session_token(%Conn{} = conn, token) when is_binary(token) do
	put_session(conn, @oauth_token_session_key, token)
	end

	@doc "Deletes OAuth token string from session"
	def delete_session_token(%Conn{} = conn) do
	delete_session(conn, @oauth_token_session_key)
	end
	end