1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Plugs.OAuthPlug do
15 @realm_reg Regex.compile!("Bearer\:?\s+(.*)$", "i")
17 def init(options), do: options
19 def call(%{assigns: %{user: %User{}}} = conn, _), do: conn
22 with {:ok, token_str} <- fetch_token_str(conn),
23 {:ok, user, token_record} <- fetch_user_and_token(token_str) do
25 |> assign(:token, token_record)
26 |> assign(:user, user)
34 @spec fetch_user_and_token(String.t()) :: {:ok, User.t(), Token.t()} | nil
35 defp fetch_user_and_token(token) do
36 query = from(q in Token, where: q.token == ^token, preload: [:user])
38 with %Token{user: %{info: %{deactivated: false} = _} = user} = token_record <- Repo.one(query) do
39 {:ok, user, token_record}
43 # Gets token from session by :oauth_token key
45 @spec fetch_token_from_session(Plug.Conn.t()) :: :no_token_found | {:ok, String.t()}
46 defp fetch_token_from_session(conn) do
47 case get_session(conn, :oauth_token) do
48 nil -> :no_token_found
53 # Gets token from headers
55 @spec fetch_token_str(Plug.Conn.t()) :: :no_token_found | {:ok, String.t()}
56 defp fetch_token_str(%Plug.Conn{} = conn) do
57 headers = get_req_header(conn, "authorization")
59 with :no_token_found <- fetch_token_str(headers),
60 do: fetch_token_from_session(conn)
63 @spec fetch_token_str(Keyword.t()) :: :no_token_found | {:ok, String.t()}
64 defp fetch_token_str([]), do: :no_token_found
66 defp fetch_token_str([token | tail]) do
67 trimmed_token = String.trim(token)
69 case Regex.run(@realm_reg, trimmed_token) do
70 [_, match] -> {:ok, String.trim(match)}
71 _ -> fetch_token_str(tail)