Extends the connection timeout for a particular VPN

osxvpnfix

#!/usr/bin/env ruby

def usage(error=nil)
  puts "Usage: sudo osxvpnfix </var/run/racoon/ip.conf> [lifetime]"
  puts "Error: #{error}"
  exit 1
end

usage("Must be run as root.") unless(`whoami`.strip == "root")

path = ARGV[0] || usage("Path to the VPN's config is required.")
period = ARGV[1] || "24 hours"

usage("The VPN's config must exist.") unless(File.exist?(path))

config = File.read(path)

# Create /etc directory if it doesn't exist
remote_config = "/etc/remote"
if !File.exist?(remote_config)
  puts "Creating #{remote_config}"
  require "fileutils"
  FileUtils.mkdir_p(remote_config)
end

# Patch racoon config if needed
racoon_config = "/etc/racoon/racoon.conf"
if "" == `grep "/etc/remote" #{racoon_config}`.strip
  puts "Patching #{racoon_config}"
  File.open(racoon_config, 'a') do |f|
    f.puts
    f.puts %(include "/etc/remote/*.conf" ;)
  end
end

# Modify and copy vpn config file
puts "Writing modified config file."
config.gsub!(/lifetime time \d+ \w+/, "lifetime time #{period}")
File.open("#{remote_config}/#{File.basename(path)}", "w") do |f|
  f.write(config)
end