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# Copyright 2015 Google, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
require "googleauth/signet"
require "googleauth/credentials_loader"
require "multi_json"
module Google
module Auth
##
# Small utility for normalizing scopes into canonical form.
#
# The canonical form of scopes is as an array of strings, each in the form
# of a full URL. This utility converts space-delimited scope strings into
# this form, and handles a small number of common aliases.
#
# This is used by UserRefreshCredentials to verify that a credential grants
# a requested scope.
#
module ScopeUtil
##
# Aliases understood by this utility
#
ALIASES = {
"email" => "https://www.googleapis.com/auth/userinfo.email",
"profile" => "https://www.googleapis.com/auth/userinfo.profile",
"openid" => "https://www.googleapis.com/auth/plus.me"
}.freeze
##
# Normalize the input, which may be an array of scopes or a whitespace-
# delimited scope string. The output is always an array, even if a single
# scope is input.
#
# @param scope [String,Array<String>] Input scope(s)
# @return [Array<String>] An array of scopes in canonical form.
#
def self.normalize scope
list = as_array scope
list.map { |item| ALIASES[item] || item }
end
##
# Ensure the input is an array. If a single string is passed in, splits
# it via whitespace. Does not interpret aliases.
#
# @param scope [String,Array<String>] Input scope(s)
# @return [Array<String>] Always an array of strings
# @raise [ArgumentError] If the input is not a string or array of strings
#
def self.as_array scope
case scope
when Array
scope.each do |item|
unless item.is_a? String
raise ArgumentError, "Invalid scope value: #{item.inspect}. Must be string or array"
end
end
scope
when String
scope.split
else
raise ArgumentError, "Invalid scope value: #{scope.inspect}. Must be string or array"
end
end
end
end
end
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