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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.Token do
use Ecto.Schema
import Ecto.Changeset
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Web.OAuth.App
alias Pleroma.Web.OAuth.Authorization
alias Pleroma.Web.OAuth.Token
alias Pleroma.Web.OAuth.Token.Query
@type t :: %__MODULE__{}
schema "oauth_tokens" do
field(:token, :string)
field(:refresh_token, :string)
field(:scopes, {:array, :string}, default: [])
field(:valid_until, :naive_datetime_usec)
belongs_to(:user, User, type: FlakeId.Ecto.CompatType)
belongs_to(:app, App)
timestamps()
end
@doc "Gets token for app by access 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
Query.get_by_app(app_id)
|> Query.get_by_token(token)
|> Repo.find_resource()
end
@doc "Gets token for app by refresh token"
@spec get_by_refresh_token(App.t(), String.t()) :: {:ok, t()} | {:error, :not_found}
def get_by_refresh_token(%App{id: app_id} = _app, token) do
Query.get_by_app(app_id)
|> Query.get_by_refresh_token(token)
|> Query.preload([:user])
|> Repo.find_resource()
end
@spec exchange_token(App.t(), Authorization.t()) :: {:ok, Token.t()} | {:error, Changeset.t()}
def exchange_token(app, auth) do
with {:ok, auth} <- Authorization.use_token(auth),
true <- auth.app_id == app.id do
user = if auth.user_id, do: User.get_cached_by_id(auth.user_id), else: %User{}
create(
app,
user,
%{scopes: auth.scopes}
)
end
end
defp put_token(changeset) do
changeset
|> change(%{token: Token.Utils.generate_token()})
|> validate_required([:token])
|> unique_constraint(:token)
end
defp put_refresh_token(changeset, attrs) do
refresh_token = Map.get(attrs, :refresh_token, Token.Utils.generate_token())
changeset
|> change(%{refresh_token: refresh_token})
|> validate_required([:refresh_token])
|> unique_constraint(:refresh_token)
end
defp put_valid_until(changeset, attrs) do
expires_in =
Map.get(attrs, :valid_until, NaiveDateTime.add(NaiveDateTime.utc_now(), expires_in()))
changeset
|> change(%{valid_until: expires_in})
|> validate_required([:valid_until])
end
@spec create(App.t(), User.t(), map()) :: {:ok, Token} | {:error, Changeset.t()}
def create(%App{} = app, %User{} = user, attrs \\ %{}) do
with {:ok, token} <- do_create(app, user, attrs) do
if Pleroma.Config.get([:oauth2, :clean_expired_tokens]) do
Pleroma.Workers.PurgeExpiredToken.enqueue(%{
token_id: token.id,
valid_until: DateTime.from_naive!(token.valid_until, "Etc/UTC"),
mod: __MODULE__
})
end
{:ok, token}
end
end
defp do_create(app, user, attrs) do
%__MODULE__{user_id: user.id, app_id: app.id}
|> cast(%{scopes: attrs[:scopes] || app.scopes}, [:scopes])
|> validate_required([:scopes, :app_id])
|> put_valid_until(attrs)
|> put_token()
|> put_refresh_token(attrs)
|> Repo.insert()
end
def delete_user_tokens(%User{id: user_id}) do
Query.get_by_user(user_id)
|> Repo.delete_all()
end
def delete_user_token(%User{id: user_id}, token_id) do
Query.get_by_user(user_id)
|> Query.get_by_id(token_id)
|> Repo.delete_all()
end
def get_user_tokens(%User{id: user_id}) do
Query.get_by_user(user_id)
|> Query.preload([:app])
|> Repo.all()
end
def is_expired?(%__MODULE__{valid_until: valid_until}) do
NaiveDateTime.diff(NaiveDateTime.utc_now(), valid_until) > 0
end
def is_expired?(_), do: false
defp expires_in, do: Pleroma.Config.get([:oauth2, :token_expires_in], 600)
end
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