1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Plugs.OAuthPlug do
11 alias Pleroma.Web.OAuth.Token
13 @realm_reg Regex.compile!("Bearer\:?\s+(.*)$", "i")
15 def init(options), do: options
17 def call(%{assigns: %{user: %User{}}} = conn, _), do: conn
19 def call(%{params: %{"access_token" => access_token}} = conn, _) do
20 with {:ok, user, token_record} <- fetch_user_and_token(access_token) do
22 |> assign(:token, token_record)
23 |> assign(:user, user)
30 with {:ok, token_str} <- fetch_token_str(conn),
31 {:ok, user, token_record} <- fetch_user_and_token(token_str) do
33 |> assign(:token, token_record)
34 |> assign(:user, user)
42 @spec fetch_user_and_token(String.t()) :: {:ok, User.t(), Token.t()} | nil
43 defp fetch_user_and_token(token) do
46 where: t.token == ^token,
47 join: user in assoc(t, :user),
51 # credo:disable-for-next-line Credo.Check.Readability.MaxLineLength
52 with %Token{user: %{info: %{deactivated: false} = _} = user} = token_record <- Repo.one(query) do
53 {:ok, user, token_record}
57 # Gets token from session by :oauth_token key
59 @spec fetch_token_from_session(Plug.Conn.t()) :: :no_token_found | {:ok, String.t()}
60 defp fetch_token_from_session(conn) do
61 case get_session(conn, :oauth_token) do
62 nil -> :no_token_found
67 # Gets token from headers
69 @spec fetch_token_str(Plug.Conn.t()) :: :no_token_found | {:ok, String.t()}
70 defp fetch_token_str(%Plug.Conn{} = conn) do
71 headers = get_req_header(conn, "authorization")
73 with :no_token_found <- fetch_token_str(headers),
74 do: fetch_token_from_session(conn)
77 @spec fetch_token_str(Keyword.t()) :: :no_token_found | {:ok, String.t()}
78 defp fetch_token_str([]), do: :no_token_found
80 defp fetch_token_str([token | tail]) do
81 trimmed_token = String.trim(token)
83 case Regex.run(@realm_reg, trimmed_token) do
84 [_, match] -> {:ok, String.trim(match)}
85 _ -> fetch_token_str(tail)