1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Web.Plugs.OAuthPlug do
11 alias Pleroma.Web.OAuth.App
12 alias Pleroma.Web.OAuth.Token
14 @realm_reg Regex.compile!("Bearer\:?\s+(.*)$", "i")
16 def init(options), do: options
18 def call(%{assigns: %{user: %User{}}} = conn, _), do: conn
20 def call(%{params: %{"access_token" => access_token}} = conn, _) do
21 with {:ok, user, token_record} <- fetch_user_and_token(access_token) do
23 |> assign(:token, token_record)
24 |> assign(:user, user)
27 # token found, but maybe only with app
28 with {:ok, app, token_record} <- fetch_app_and_token(access_token) do
30 |> assign(:token, token_record)
39 case fetch_token_str(conn) do
41 with {:ok, user, token_record} <- fetch_user_and_token(token) do
43 |> assign(:token, token_record)
44 |> assign(:user, user)
47 # token found, but maybe only with app
48 with {:ok, app, token_record} <- fetch_app_and_token(token) do
50 |> assign(:token, token_record)
64 @spec fetch_user_and_token(String.t()) :: {:ok, User.t(), Token.t()} | nil
65 defp fetch_user_and_token(token) do
68 where: t.token == ^token,
69 join: user in assoc(t, :user),
73 # credo:disable-for-next-line Credo.Check.Readability.MaxLineLength
74 with %Token{user: user} = token_record <- Repo.one(query) do
75 {:ok, user, token_record}
79 @spec fetch_app_and_token(String.t()) :: {:ok, App.t(), Token.t()} | nil
80 defp fetch_app_and_token(token) do
82 from(t in Token, where: t.token == ^token, join: app in assoc(t, :app), preload: [app: app])
84 with %Token{app: app} = token_record <- Repo.one(query) do
85 {:ok, app, token_record}
89 # Gets token from session by :oauth_token key
91 @spec fetch_token_from_session(Plug.Conn.t()) :: :no_token_found | {:ok, String.t()}
92 defp fetch_token_from_session(conn) do
93 case get_session(conn, :oauth_token) do
94 nil -> :no_token_found
99 # Gets token from headers
101 @spec fetch_token_str(Plug.Conn.t()) :: :no_token_found | {:ok, String.t()}
102 defp fetch_token_str(%Plug.Conn{} = conn) do
103 headers = get_req_header(conn, "authorization")
105 with :no_token_found <- fetch_token_str(headers),
106 do: fetch_token_from_session(conn)
109 @spec fetch_token_str(Keyword.t()) :: :no_token_found | {:ok, String.t()}
110 defp fetch_token_str([]), do: :no_token_found
112 defp fetch_token_str([token | tail]) do
113 trimmed_token = String.trim(token)
115 case Regex.run(@realm_reg, trimmed_token) do
116 [_, match] -> {:ok, String.trim(match)}
117 _ -> fetch_token_str(tail)