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# Copyright (C) 2014 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.
require 'mongo/auth/scram/conversation'
module Mongo
module Auth
# Defines behaviour for SCRAM-SHA1 authentication.
#
# @since 2.0.0
class SCRAM
# The authentication mechinism string.
#
# @since 2.0.0
MECHANISM = 'SCRAM-SHA-1'.freeze
# @return [ Mongo::Auth::User ] The user to authenticate.
attr_reader :user
# Instantiate a new authenticator.
#
# @example Create the authenticator.
# Mongo::Auth::SCRAM.new(user)
#
# @param [ Mongo::Auth::User ] user The user to authenticate.
#
# @since 2.0.0
def initialize(user)
@user = user
end
# Log the user in on the given connection.
#
# @example Log the user in.
# user.login(connection)
#
# @param [ Mongo::Connection ] connection The connection to log into.
# on.
#
# @return [ Protocol::Message ] The authentication response.
#
# @since 2.0.0
def login(connection)
conversation = Conversation.new(user)
reply = connection.dispatch([ conversation.start(connection) ])
connection.update_cluster_time(Operation::Result.new(reply))
reply = connection.dispatch([ conversation.continue(reply, connection) ])
connection.update_cluster_time(Operation::Result.new(reply))
until reply.documents[0][Conversation::DONE]
reply = connection.dispatch([ conversation.finalize(reply, connection) ])
connection.update_cluster_time(Operation::Result.new(reply))
end
reply
end
end
end
end
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