forked from AkkomaGang/akkoma
FloatingGhost
b8be8192fb
this didn't actually _do_ anything in the past, the users would be prevented from accessing the resource, but they shouldn't be able to even create them
84 lines
2.2 KiB
Elixir
84 lines
2.2 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.OAuth.Scopes do
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@moduledoc """
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Functions for dealing with scopes.
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"""
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alias Pleroma.Web.Plugs.OAuthScopesPlug
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@doc """
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Fetch scopes from request params.
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Note: `scopes` is used by Mastodon — supporting it but sticking to
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OAuth's standard `scope` wherever we control it
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"""
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@spec fetch_scopes(map() | struct(), list()) :: list()
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def fetch_scopes(params, default) do
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parse_scopes(params["scope"] || params["scopes"] || params[:scopes], default)
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end
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def parse_scopes(scopes, _default) when is_list(scopes) do
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Enum.filter(scopes, &(&1 not in [nil, ""]))
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end
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def parse_scopes(scopes, default) when is_binary(scopes) do
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scopes
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|> to_list
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|> parse_scopes(default)
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end
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def parse_scopes(_, default) do
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default
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end
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@doc """
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Convert scopes string to list
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"""
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@spec to_list(binary()) :: [binary()]
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def to_list(nil), do: []
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def to_list(str) do
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str
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|> String.trim()
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|> String.split(~r/[\s,]+/)
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end
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@doc """
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Convert scopes list to string
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"""
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@spec to_string(list()) :: binary()
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def to_string(scopes), do: Enum.join(scopes, " ")
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@doc """
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Validates scopes.
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"""
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@spec validate(list() | nil, list(), Pleroma.User.t()) ::
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{:ok, list()} | {:error, :missing_scopes | :unsupported_scopes, :user_is_not_an_admin}
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def validate(blank_scopes, _app_scopes, _user) when blank_scopes in [nil, []],
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do: {:error, :missing_scopes}
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def validate(scopes, app_scopes, %Pleroma.User{is_admin: is_admin}) do
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if !is_admin && contains_admin_scopes?(scopes) do
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{:error, :user_is_not_an_admin}
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else
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validate_scopes_are_supported(scopes, app_scopes)
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end
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end
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defp validate_scopes_are_supported(scopes, app_scopes) do
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case OAuthScopesPlug.filter_descendants(scopes, app_scopes) do
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^scopes -> {:ok, scopes}
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_ -> {:error, :unsupported_scopes}
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end
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end
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def contains_admin_scopes?(scopes) do
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scopes
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|> OAuthScopesPlug.filter_descendants(["admin"])
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|> Enum.any?()
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end
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end
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