Create Network Manager OpenVPN certificates and keys from .ovpn file

ovpn_files.rb

FILE_NAMES = {'ca' => 'ca.crt',
              'cert' => 'usr.crt',
              'key' => 'usr.key',
              'tls-auth' => 'tls.key',
              }

config = File.read(ARGV[0])

FILE_NAMES.each do |tag, filename|
  config.match(/<#{tag}>(.*?)<\/#{tag}>/m)
  File.open(filename, 'w') {|f| f.write($1)} if $1
end