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