#!/usr/bin/env python

from sys import stdout, exit
from socket import socket, AF_INET, SOCK_STREAM, SOL_SOCKET, SO_REUSEADDR, getservbyname
from threading import Thread
from time import sleep
from string import strip

finger_port = getservbyname("finger", "tcp")

class finger_client(Thread):
	def __init__(self, user):
		Thread.__init__(self)
		self.user = user
	def run(self):
		sock = socket(AF_INET, SOCK_STREAM)
		sock.connect(("localhost",finger_port))
		file = sock.makefile("r+")
		file.write(self.user + "\n")
		file.flush()
		print strip(file.readline())

class finger_server(Thread):
	def __init__(self):
		Thread.__init__(self)
	def run(self):
		max_queued_connections=5
		listen = socket(AF_INET, SOCK_STREAM)
		listen.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
		listen.bind(("", finger_port))
		listen.listen(max_queued_connections)
		while 1:
			(conn, peer) = listen.accept()
			finger_handler(conn).start()

class finger_handler(Thread):
	def __init__(self, conn):
		Thread.__init__(self)
		self.file = conn.makefile("r+")
		self.db = {
			"sam":"a naughty boy",
			"fabian":"a nuff-nuff",
			"danny":"a heffalump",
		}
	def run(self):
		file = self.file
		name = strip(file.readline())
		msg = name + " is " + self.db.get(name, "unknown")
		file.write(msg + "\n")
		file.close()

finger_server().start()
sleep(0.2)
finger_client("sam").start()
finger_client("fabian").start()
finger_client("danny").start()
finger_client("bert").start()