helper.rb

#
# Cookbook:: iis
# Library:: helper
#
# Copyright:: 2017-2019, Chef Software, 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 IISCookbook
  # Contains functions that are used throughout this cookbook
  module Helper
    @iis_version = nil

    if RUBY_PLATFORM =~ /mswin|mingw32|windows/
      require 'chef/win32/version'
      require 'win32/registry'
    end

    require 'rexml/document'
    require 'chef/mixin/shell_out'

    include Chef::Mixin::ShellOut
    include REXML

    def self.older_than_windows2012?
      if RUBY_PLATFORM =~ /mswin|mingw32|windows/
        win_version = Chef::ReservedNames::Win32::Version.new
        win_version.windows_7? || win_version.windows_server_2008_r2?
      end
    end

    def windows_cleanpath(path)
      path = if defined?(Chef::Util::PathHelper.cleanpath).nil?
               win_friendly_path(path)
             else
               Chef::Util::PathHelper.cleanpath(path)
             end
      # Remove any trailing slashes to prevent them from accidentally escaping any quotes.
      path.tr('/', '\\')
    end

    def application_cleanname(application_name)
      if application_name.count('/') == 0
        "#{application_name}/"
      elsif application_name.count('/') > 1
        application_name.chomp('/')
      else
        application_name
      end
    end

    def value(document, xpath)
      Text.unnormalize(XPath.first(document, xpath).to_s)
    end

    def get_value(document, xpath)
      XPath.match(document, xpath)
    end

    def bool(value)
      value == 'true'
    end

    def appcmd(node)
      @appcmd ||= "#{node['iis']['home']}\\appcmd.exe"
    end

    def iis_version
      if @iis_version.nil?
        version_string = Win32::Registry::HKEY_LOCAL_MACHINE.open('SOFTWARE\Microsoft\InetStp').read('VersionString')[1]
        version_string.slice! 'Version '
        @iis_version = version_string
      end
      @iis_version.to_f
    end

    def locate_sysnative_cmd(cmd)
      if ::File.exist?("#{ENV['WINDIR']}\\sysnative\\#{cmd}")
        "#{ENV['WINDIR']}\\sysnative\\#{cmd}"
      elsif ::File.exist?("#{ENV['WINDIR']}\\system32\\#{cmd}")
        "#{ENV['WINDIR']}\\system32\\#{cmd}"
      else
        cmd
      end
    end
  end
end