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require 'openssl'
require_relative '../support.rb'
module EM::Mongo
class MONGODB_CR < Authentication
MECHANISM = 'MONGODB-CR'.freeze
def authenticate(username, password)
response = RequestResponse.new
auth_resp = @db.collection(SYSTEM_COMMAND_COLLECTION).first({'getnonce' => 1})
auth_resp.callback do |res|
if not res or not res['nonce']
if res.nil? then response.fail "connection failure"
else response.fail "invalid first server response: " + res.to_s
end
else
auth = BSON::OrderedHash.new
auth['authenticate'] = 1
auth['user'] = username
auth['nonce'] = res['nonce']
auth['key'] = auth_key(username, password, res['nonce'])
auth_resp2 = @db.collection(SYSTEM_COMMAND_COLLECTION).first(auth)
auth_resp2.callback do |res|
if Support.ok?(res)
response.succeed true
else
response.fail res
end
end
auth_resp2.errback { |err| response.fail err }
end
end
auth_resp.errback { |err| response.fail err }
response
end
# Generate an MD5 for authentication.
#
# @param [String] username
# @param [String] password
# @param [String] nonce
#
# @return [String] a key for db authentication.
def auth_key(username, password, nonce)
OpenSSL::Digest::MD5.hexdigest("#{nonce}#{username}#{Support.hash_password(username, password)}")
end
end
end
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