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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.
module Mongo
module Auth
class X509
# Defines behaviour around a single x.509 conversation between the
# client and server.
#
# @since 2.0.0
class Conversation
# The login message.
#
# @since 2.0.0
LOGIN = { authenticate: 1 }.freeze
# @return [ Protocol::Message ] reply The current reply in the
# conversation.
attr_reader :reply
# @return [ User ] user The user for the conversation.
attr_reader :user
# Finalize the x.509 conversation. This is meant to be iterated until
# the provided reply indicates the conversation is finished.
#
# @example Finalize the conversation.
# conversation.finalize(reply)
#
# @param [ Protocol::Message ] reply The reply of the previous
# message.
#
# @return [ Protocol::Query ] The next message to send.
#
# @since 2.0.0
def finalize(reply)
validate!(reply)
end
# Start the x.509 conversation. This returns the first message that
# needs to be send to the server.
#
# @example Start the conversation.
# conversation.start
#
# @param [ Mongo::Server::Connection ] connection The connection being authenticated.
#
# @return [ Protocol::Query ] The first x.509 conversation message.
#
# @since 2.0.0
def start(connection = nil)
login = LOGIN.merge(mechanism: X509::MECHANISM)
login[:user] = user.name if user.name
if connection && connection.features.op_msg_enabled?
selector = login
selector[Protocol::Msg::DATABASE_IDENTIFIER] = user.auth_source
cluster_time = connection.mongos? && connection.cluster_time
selector[Operation::CLUSTER_TIME] = cluster_time if cluster_time
Protocol::Msg.new([:none], {}, selector)
else
Protocol::Query.new(
Auth::EXTERNAL,
Database::COMMAND,
login,
limit: -1
)
end
end
# Create the new conversation.
#
# @example Create the new conversation.
# Conversation.new(user, "admin")
#
# @param [ Auth::User ] user The user to converse about.
#
# @since 2.0.0
def initialize(user)
@user = user
end
private
def validate!(reply)
raise Unauthorized.new(user) if reply.documents[0][Operation::Result::OK] != 1
@reply = reply
end
end
end
end
end
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