#!/usr/local/bin/python2.4

URL = 'http://www.openbsd.org/errata42.html'
SHA1 = '24a908827642f19ee046db6ca66f3024eb5a457e'

import urllib
import sha
import sys

fh = urllib.urlopen(URL)
m = sha.new(fh.read())
fh.close()
h = m.hexdigest()
if h != SHA1:
        print 'The contents of \'' + URL + '\' have changed.'
        fh = open(sys.argv[0], 'r+')
        l = fh.readlines()
        l[3] = 'SHA1 = \'' + h + '\'\n'
        fh.seek(0)
        fh.truncate()
        fh.writelines(l)
        fh.close()