Script to connect to several VPNs that use different racoon config files from the command line

vpn_connect.rb

#!/usr/bin/env ruby

CONFIGURED_INTERFACES = ["O2", "TID"]
VPN_INTERFACE_NAMES = "%s VPN"
RACOON_CONFIG_FILES = "/etc/racoon/racoon.conf.%s"

unless (ARGV.length > 0 && CONFIGURED_INTERFACES.include?(ARGV[0].upcase))
  puts "usage: vpn_connect [#{CONFIGURED_INTERFACES.join('|')}]"
  exit 1
end

interface = ARGV[0].upcase

CONFIGURED_INTERFACES.each do |int|
  interface_name = VPN_INTERFACE_NAMES % int

  is_enabled = `networksetup -showpppoestatus "#{interface_name}"`
  unless is_enabled.include? 'disconnected'
    puts "Disconnecting VPN #{int}..."
    `networksetup -disconnectpppoeservice "#{interface_name}"`
  end
end

interface_filename = RACOON_CONFIG_FILES % interface.downcase

puts "Copying racoon config file from interface #{interface}"
`cp #{interface_filename} /etc/racoon/racoon.conf`

puts "Connecting to VPN #{interface}"
`networksetup -connectpppoeservice "#{interface} VPN"`