gistfile1.txt

#!/System/Library/Frameworks/Ruby.framework/Versions/Current/usr/bin/ruby
require 'tempfile'

module Tty extend self
  def blue; bold 34; end
  def white; bold 39; end
  def red; underline 31; end
  def reset; escape 0; end
  def bold n; escape "1;#{n}" end
  def underline n; escape "4;#{n}" end
  def escape n; "\033[#{n}m" if STDOUT.tty? end
end

class Array
  def shell_s
    cp = dup
    first = cp.shift
    cp.map{ |arg| arg.gsub " ", "\\ " }.unshift(first) * " "
  end
end

def ohai *args
  puts "#{Tty.blue}==>#{Tty.white} #{args.shell_s}#{Tty.reset}"
end

def warn warning
  puts "#{Tty.red}Warning#{Tty.reset}: #{warning.chomp}"
end

def system *args
  abort "Failed during: #{args.shell_s}" unless Kernel.system(*args)
end

def sudo *args
  ohai "/usr/bin/sudo", *args
  system "/usr/bin/sudo", *args
end

def getc  # NOTE only tested on OS X
  system "/bin/stty raw -echo"
  if STDIN.respond_to?(:getbyte)
    STDIN.getbyte
  else
    STDIN.getc
  end
ensure
  system "/bin/stty -raw echo"
end

def wait_for_user
  puts
  puts "Press RETURN to continue or any other key to abort"
  c = getc
  # we test for \r and \n because some stuff does \r instead
  abort unless c == 13 or c == 10
end

PPP_PATH = '/etc/ppp'
PPP_SCRIPT_NAME = 'ip-up'
PPP_SCRIPT_CONTENT = <<-ROUTES_CONTENT
#!/bin/sh

/sbin/route -n add 10.0.0.0/16 172.16.1.1
ROUTES_CONTENT

if !File.directory? PPP_PATH
abort <<-EOABORT if !File.directory? PPP_PATH
The folder  #{PPP_PATH} does not exists, your version of OSX might not be compatible
EOABORT
end

ohai "Creating route initialization script"
file = Tempfile.new('vpn_route_config_')
begin
  file.write PPP_SCRIPT_CONTENT
  file.flush
  sudo "cp", file.path, File.join(PPP_PATH, PPP_SCRIPT_NAME)
ensure
   file.close
   file.unlink
end

sudo "/bin/chmod", "ug+rwx", File.join(PPP_PATH, PPP_SCRIPT_NAME)
ohai "done! to undo delete this file: #{File.join(PPP_PATH, PPP_SCRIPT_NAME)}"
ohai "vpn routes setup ready"