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-rw-r--r--lib/pleroma/web/oauth/scopes.ex76
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diff --git a/lib/pleroma/web/oauth/scopes.ex b/lib/pleroma/web/oauth/scopes.ex
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--- a/lib/pleroma/web/oauth/scopes.ex
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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.Scopes do
- @moduledoc """
- Functions for dealing with scopes.
- """
-
- alias Pleroma.Plugs.OAuthScopesPlug
-
- @doc """
- Fetch scopes from request params.
-
- Note: `scopes` is used by Mastodon — supporting it but sticking to
- OAuth's standard `scope` wherever we control it
- """
- @spec fetch_scopes(map() | struct(), list()) :: list()
-
- def fetch_scopes(params, default) do
- parse_scopes(params["scope"] || params["scopes"] || params[:scopes], default)
- end
-
- def parse_scopes(scopes, _default) when is_list(scopes) do
- Enum.filter(scopes, &(&1 not in [nil, ""]))
- end
-
- def parse_scopes(scopes, default) when is_binary(scopes) do
- scopes
- |> to_list
- |> parse_scopes(default)
- end
-
- def parse_scopes(_, default) do
- default
- end
-
- @doc """
- Convert scopes string to list
- """
- @spec to_list(binary()) :: [binary()]
- def to_list(nil), do: []
-
- def to_list(str) do
- str
- |> String.trim()
- |> String.split(~r/[\s,]+/)
- end
-
- @doc """
- Convert scopes list to string
- """
- @spec to_string(list()) :: binary()
- def to_string(scopes), do: Enum.join(scopes, " ")
-
- @doc """
- Validates scopes.
- """
- @spec validate(list() | nil, list()) ::
- {:ok, list()} | {:error, :missing_scopes | :unsupported_scopes}
- def validate(blank_scopes, _app_scopes) when blank_scopes in [nil, []],
- do: {:error, :missing_scopes}
-
- def validate(scopes, app_scopes) do
- case OAuthScopesPlug.filter_descendants(scopes, app_scopes) do
- ^scopes -> {:ok, scopes}
- _ -> {:error, :unsupported_scopes}
- end
- end
-
- def contains_admin_scopes?(scopes) do
- scopes
- |> OAuthScopesPlug.filter_descendants(["admin"])
- |> Enum.any?()
- end
-end