mongodb/mongo-ruby-driver

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lib/mongo/auth/stringprep/profiles/sasl.rb

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# frozen_string_literal: true
# encoding: utf-8

# Copyright (C) 2018-2020 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
    module StringPrep
      module Profiles
        # Contains the mappings and prohibited lists for SASLPrep (RFC 4013).
        #
        # @note Only available for Ruby versions 2.2.0 and up.
        #
        # @since 2.6.0
        # @api private
        module SASL
          MAP_NON_ASCII_TO_SPACE = {
            0x00A0 => [0x0020],
            0x1680 => [0x0020],
            0x2000 => [0x0020],
            0x2001 => [0x0020],
            0x2002 => [0x0020],
            0x2003 => [0x0020],
            0x2004 => [0x0020],
            0x2005 => [0x0020],
            0x2006 => [0x0020],
            0x2007 => [0x0020],
            0x2008 => [0x0020],
            0x2009 => [0x0020],
            0x200A => [0x0020],
            0x200B => [0x0020],
            0x202F => [0x0020],
            0x205F => [0x0020],
            0x3000 => [0x0020],
          }.freeze

          # The mappings to use for SASL string preparation.
          #
          # @since 2.6.0
          MAPPINGS = [
            Tables::B1,
            MAP_NON_ASCII_TO_SPACE,
          ].freeze

          # The prohibited character lists to use for SASL string preparation.
          #
          # @since 2.6.0
          PROHIBITED = [
            Tables::A1,
            Tables::C1_2,
            Tables::C2_1,
            Tables::C2_2,
            Tables::C3,
            Tables::C4,
            Tables::C5,
            Tables::C6,
            Tables::C7,
            Tables::C8,
            Tables::C9,
          ].freeze
        end
      end
    end
  end
end