#! /usr/bin/env python

import sys, string
from random import randint
from crypt  import crypt

def help():
   print "Usage: %s < username clear_passwd >" % sys.argv[0]
   sys.exit()

if len(sys.argv) not in (1,2,3) or 'help' in sys.argv:
   help()

if len(sys.argv) == 2:
   passwd = ''
   username = sys.argv[1]+':'
elif len(sys.argv) == 1:
   username = ''
   passwd = ''
elif len(sys.argv) == 3:
   username = sys.argv[1]+':'
   passwd = sys.argv[2]

seedroot = string.letters[string.find(string.letters,'a'): \
			  string.find(string.letters,'z')]
seedroot = seedroot +  string.letters[string.find(string.letters,'A'): \
				      string.find(string.letters,'Z')]
seedroot = seedroot + string.digits

l = len(seedroot) - 1
spike = seedroot[randint(0,l)] + seedroot[randint(0,l)]

if passwd == '':
   for i in range(7):
      passwd = passwd + seedroot[randint(0,l)]
   pos = randint(0,6)
   signs = "!@#$%&*()_-+',.;"
   l = len(signs)
   passwd = passwd[:pos]+signs[randint(0,l)]+passwd[pos:]

passwdc = crypt(passwd,spike)
print username+passwdc+ ":      password is " + passwd