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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.OAuth.Authorization do
use Ecto.Schema
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Web.OAuth.App
alias Pleroma.Web.OAuth.Authorization
import Ecto.Changeset
import Ecto.Query
@type t :: %__MODULE__{}
schema "oauth_authorizations" do
field(:token, :string)
field(:scopes, {:array, :string}, default: [])
field(:valid_until, :naive_datetime_usec)
field(:used, :boolean, default: false)
belongs_to(:user, User, type: FlakeId.Ecto.CompatType)
belongs_to(:app, App)
timestamps()
end
@spec create_authorization(App.t(), User.t() | %{}, [String.t()] | nil) ::
{:ok, Authorization.t()} | {:error, Changeset.t()}
def create_authorization(%App{} = app, %User{} = user, scopes \\ nil) do
%{
scopes: scopes || app.scopes,
user_id: user.id,
app_id: app.id
}
|> create_changeset()
|> Repo.insert()
end
@spec create_changeset(map()) :: Changeset.t()
def create_changeset(attrs \\ %{}) do
%Authorization{}
|> cast(attrs, [:user_id, :app_id, :scopes, :valid_until])
|> validate_required([:app_id, :scopes])
|> add_token()
|> add_lifetime()
end
defp add_token(changeset) do
token = :crypto.strong_rand_bytes(32) |> Base.url_encode64(padding: false)
put_change(changeset, :token, token)
end
defp add_lifetime(changeset) do
put_change(changeset, :valid_until, NaiveDateTime.add(NaiveDateTime.utc_now(), 60 * 10))
end
@spec use_changeset(Authtorizatiton.t(), map()) :: Changeset.t()
def use_changeset(%Authorization{} = auth, params) do
auth
|> cast(params, [:used])
|> validate_required([:used])
end
@spec use_token(Authorization.t()) ::
{:ok, Authorization.t()} | {:error, Changeset.t()} | {:error, String.t()}
def use_token(%Authorization{used: false, valid_until: valid_until} = auth) do
if NaiveDateTime.diff(NaiveDateTime.utc_now(), valid_until) < 0 do
Repo.update(use_changeset(auth, %{used: true}))
else
{:error, "token expired"}
end
end
def use_token(%Authorization{used: true}), do: {:error, "already used"}
@spec delete_user_authorizations(User.t()) :: {integer(), any()}
def delete_user_authorizations(%User{} = user) do
user
|> delete_by_user_query
|> Repo.delete_all()
end
def delete_by_user_query(%User{id: user_id}) do
from(a in __MODULE__, where: a.user_id == ^user_id)
end
@doc "gets auth for app by token"
@spec get_by_token(App.t(), String.t()) :: {:ok, t()} | {:error, :not_found}
def get_by_token(%App{id: app_id} = _app, token) do
from(t in __MODULE__, where: t.app_id == ^app_id and t.token == ^token)
|> Repo.find_resource()
end
end
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