akkoma/lib/pleroma/plugs/oauth_scopes_plug.ex

29 lines
895 B
Elixir

# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Plugs.OAuthScopesPlug do
import Plug.Conn
alias Pleroma.Web.OAuth
@behaviour Plug
def init(%{required_scopes: _} = options), do: options
def call(%Plug.Conn{assigns: assigns} = conn, %{required_scopes: required_scopes}) do
token = assigns[:token]
granted_scopes = token && OAuth.parse_scopes(token.scope)
if is_nil(token) || required_scopes -- granted_scopes == [] do
conn
else
missing_scopes = required_scopes -- granted_scopes
error_message = "Insufficient permissions: #{Enum.join(missing_scopes, ", ")}."
conn
|> put_resp_content_type("application/json")
|> send_resp(403, Jason.encode!(%{error: error_message}))
|> halt()
end
end
end