gistfile1.rb

def launch_server
	server = TCPServer.new(7910)
  	while (session = server.accept)
		Thread.new do
      			begin
    				command = session.readline.chomp
      			rescue
    				# If input is a ^c close client session and wait for a new one
				session.close
			next
      			end
      			# may be changed with 00:16:3E:XX:XX:XX ... if wanted
      			if command =~ /^([a-fA-F0-9]{2}:){5}([a-fA-F0-9]{2})$/
				ip = omshell(command)
         			if ip
	 				name = nsupdate(ip,parse(command))
					session.puts ip+"\t"+name+".virtual"
	 			else
					session.puts "ip address not attributed"
	 			end
      			elsif command =~ /^([a-fA-F0-9]{2}):([a-fA-F0-9]{2}):([a-fA-F0-9]{2}):([a-fA-F0-9]{2}):([a-fA-F0-9]{2}):([a-fA-F0-9]{2}) ([\w\-_]+)$/
      	 			matching = Regexp.last_match
         			mac = matching[1..6].join(':')
         			name = matching[7]
				puts mac
				puts name
				ip = omshell(mac)
         			if ip
	 				if name = nsupdate(ip,name)
	      					session.puts ip+"\t"+name+".virtual"
              				else
						session.puts "can't setup hostname"
              				end
         			else
					session.puts "ip address not attributed"
	 			end
      			else
				session.puts "bad command : xenconf mac [hostname]"
      			end
      			session.close
    		end
  	end
end