lib/mongo/auth/cr/conversation.rb
# frozen_string_literal: true
# rubocop:todo all
# Copyright (C) 2014-2020 MongoDB 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.
module Mongo
module Auth
class CR
# Defines behavior around a single MONGODB-CR conversation between the
# client and server.
#
# @since 2.0.0
# @deprecated MONGODB-CR authentication mechanism is deprecated
# as of MongoDB 3.6. Support for it in the Ruby driver will be
# removed in driver version 3.0. Please use SCRAM instead.
# @api private
class Conversation < ConversationBase
# The login message base.
#
# @since 2.0.0
LOGIN = { authenticate: 1 }.freeze
# @return [ String ] database The database to authenticate against.
attr_reader :database
# @return [ String ] nonce The initial auth nonce.
attr_reader :nonce
# Start the CR conversation. This returns the first message that
# needs to be sent to the server.
#
# @param [ Server::Connection ] connection The connection being
# authenticated.
#
# @return [ Protocol::Message ] The first CR conversation message.
#
# @since 2.0.0
def start(connection)
selector = Auth::GET_NONCE
build_message(connection, user.auth_source, selector)
end
# Continue the CR conversation. This sends the client final message
# to the server after setting the reply from the previous server
# communication.
#
# @param [ BSON::Document ] reply_document The reply document of the
# previous message.
# @param [ Mongo::Server::Connection ] connection The connection being
# authenticated.
#
# @return [ Protocol::Message ] The next message to send.
#
# @since 2.0.0
def continue(reply_document, connection)
@nonce = reply_document[Auth::NONCE]
selector = LOGIN.merge(user: user.name, nonce: nonce, key: user.auth_key(nonce))
build_message(connection, user.auth_source, selector)
end
end
end
end
end