Add expiring mutes for activities
[akkoma] / lib / pleroma / web / oauth / token / utils.ex
1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
4
5 defmodule Pleroma.Web.OAuth.Token.Utils do
6 @moduledoc """
7 Auxiliary functions for dealing with tokens.
8 """
9
10 alias Pleroma.Repo
11 alias Pleroma.Web.OAuth.App
12
13 @doc "Fetch app by client credentials from request"
14 @spec fetch_app(Plug.Conn.t()) :: {:ok, App.t()} | {:error, :not_found}
15 def fetch_app(conn) do
16 res =
17 conn
18 |> fetch_client_credentials()
19 |> fetch_client
20
21 case res do
22 %App{} = app -> {:ok, app}
23 _ -> {:error, :not_found}
24 end
25 end
26
27 defp fetch_client({id, secret}) when is_binary(id) and is_binary(secret) do
28 Repo.get_by(App, client_id: id, client_secret: secret)
29 end
30
31 defp fetch_client({_id, _secret}), do: nil
32
33 defp fetch_client_credentials(conn) do
34 # Per RFC 6749, HTTP Basic is preferred to body params
35 with ["Basic " <> encoded] <- Plug.Conn.get_req_header(conn, "authorization"),
36 {:ok, decoded} <- Base.decode64(encoded),
37 [id, secret] <-
38 Enum.map(
39 String.split(decoded, ":"),
40 fn s -> URI.decode_www_form(s) end
41 ) do
42 {id, secret}
43 else
44 _ -> {conn.params["client_id"], conn.params["client_secret"]}
45 end
46 end
47
48 @doc "convert token inserted_at to unix timestamp"
49 def format_created_at(%{inserted_at: inserted_at} = _token) do
50 inserted_at
51 |> DateTime.from_naive!("Etc/UTC")
52 |> DateTime.to_unix()
53 end
54
55 @doc false
56 @spec generate_token(keyword()) :: binary()
57 def generate_token(opts \\ []) do
58 opts
59 |> Keyword.get(:size, 32)
60 |> :crypto.strong_rand_bytes()
61 |> Base.url_encode64(padding: false)
62 end
63
64 # XXX - for whatever reason our token arrives urlencoded, but Plug.Conn should be
65 # decoding it. Investigate sometime.
66 def fix_padding(token) do
67 token
68 |> URI.decode()
69 |> Base.url_decode64!(padding: false)
70 |> Base.url_encode64(padding: false)
71 end
72 end