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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.Authorization do
   6   use Ecto.Schema
   7
   8   alias Pleroma.User
   9   alias Pleroma.Repo
  10   alias Pleroma.Web.OAuth.Authorization
  11   alias Pleroma.Web.OAuth.App
  12
  13   import Ecto.Changeset
  14   import Ecto.Query
  15
  16   schema "oauth_authorizations" do
  17     field(:token, :string)
  18     field(:scopes, {:array, :string}, default: [])
  19     field(:valid_until, :naive_datetime)
  20     field(:used, :boolean, default: false)
  21     belongs_to(:user, Pleroma.User, type: Pleroma.FlakeId)
  22     belongs_to(:app, App)
  23
  24     timestamps()
  25   end
  26
  27   def create_authorization(%App{} = app, %User{} = user, scopes \\ nil) do
  28     scopes = scopes || app.scopes
  29     token = :crypto.strong_rand_bytes(32) |> Base.url_encode64(padding: false)
  30
  31     authorization = %Authorization{
  32       token: token,
  33       used: false,
  34       user_id: user.id,
  35       app_id: app.id,
  36       scopes: scopes,
  37       valid_until: NaiveDateTime.add(NaiveDateTime.utc_now(), 60 * 10)
  38     }
  39
  40     Repo.insert(authorization)
  41   end
  42
  43   def use_changeset(%Authorization{} = auth, params) do
  44     auth
  45     |> cast(params, [:used])
  46     |> validate_required([:used])
  47   end
  48
  49   def use_token(%Authorization{used: false, valid_until: valid_until} = auth) do
  50     if NaiveDateTime.diff(NaiveDateTime.utc_now(), valid_until) < 0 do
  51       Repo.update(use_changeset(auth, %{used: true}))
  52     else
  53       {:error, "token expired"}
  54     end
  55   end
  56
  57   def use_token(%Authorization{used: true}), do: {:error, "already used"}
  58
  59   def delete_user_authorizations(%User{id: user_id}) do
  60     from(
  61       a in Pleroma.Web.OAuth.Authorization,
  62       where: a.user_id == ^user_id
  63     )
  64     |> Repo.delete_all()
  65   end
  66 end