javapluginversion64_ver2.rb

#!/usr/bin/ruby
#
#
# author: Eric Ohtake
#
# The custom fact fetches the Java Plugin 64 bits version currently installed on the system.
#
## Key for the version v8u65 HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\4EA42A62D9304AC4784BF2681408560F
## Key for the version v8u66 HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\4EA42A62D9304AC4784BF2681408660F

Facter.add('javaplugin64') do
  confine :kernel => :windows

  javaplugin64 = ''
  # This regex goes just before the 3 numbers given to the Java version/update
  regexp = '4EA42A62D9304AC4784BF268140.*'

  begin

    if RUBY_PLATFORM.downcase.include?('mswin') or RUBY_PLATFORM.downcase.include?('mingw32')
      require 'win32/registry'

      versionkeys = Array.new

      # Opens the registry key, and uses the regex to match the root of the key. Then add all the matches to the array.
      Win32::Registry::HKEY_LOCAL_MACHINE.open('SOFTWARE\\Classes\\Installer\\Products') do | version |
        version.each_key do | key |
          if /#{regexp}/ =~ key
            versionkeys << key
          end
        end
      end

      # Uses the key found above to open the values accordingly to the version.
      versionkeys.each do | versionkey |
        Win32::Registry::HKEY_LOCAL_MACHINE.open("SOFTWARE\\Classes\\Installer\\Products\\#{versionkey}") do |reg|
          reg.each do | name,type,data |
            if name.eql?('ProductName')
              javaplugin64 << data.concat('; ')
            end
          end
        end
      end
    end
  end

  setcode do
    javaplugin64.chomp('; ')
  end
end