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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.OAuth.Token do
   6   use Ecto.Schema
   7
   8   import Ecto.Query
   9
  10   alias Pleroma.{User, Repo}
  11   alias Pleroma.Web.OAuth
  12   alias Pleroma.Web.OAuth.{Token, App, Authorization}
  13
  14   schema "oauth_tokens" do
  15     field(:token, :string)
  16     field(:refresh_token, :string)
  17     field(:scope, :string)
  18     field(:valid_until, :naive_datetime)
  19     belongs_to(:user, Pleroma.User, type: Pleroma.FlakeId)
  20     belongs_to(:app, App)
  21
  22     timestamps()
  23   end
  24
  25   def exchange_token(app, auth) do
  26     with {:ok, auth} <- Authorization.use_token(auth),
  27          true <- auth.app_id == app.id do
  28       create_token(app, Repo.get(User, auth.user_id), auth.scope)
  29     end
  30   end
  31
  32   def create_token(%App{} = app, %User{} = user, scope \\ nil) do
  33     scopes = OAuth.parse_scopes(scope || app.scopes)
  34     token = :crypto.strong_rand_bytes(32) |> Base.url_encode64()
  35     refresh_token = :crypto.strong_rand_bytes(32) |> Base.url_encode64()
  36
  37     token = %Token{
  38       token: token,
  39       refresh_token: refresh_token,
  40       scope: Enum.join(scopes, " "),
  41       user_id: user.id,
  42       app_id: app.id,
  43       valid_until: NaiveDateTime.add(NaiveDateTime.utc_now(), 60 * 10)
  44     }
  45
  46     Repo.insert(token)
  47   end
  48
  49   def delete_user_tokens(%User{id: user_id}) do
  50     from(
  51       t in Pleroma.Web.OAuth.Token,
  52       where: t.user_id == ^user_id
  53     )
  54     |> Repo.delete_all()
  55   end
  56 end