Use this python script to login the campus network of BUPT

auth_bupt_net.py

#!/usr/bin/env python
#-*- coding:utf-8 -*-
import urllib2
import urllib
import md5
import re
import time
import optparse

user = 'YOUR USERNAME'
passwd = 'YOUR PASSWORD'

user_agent = 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1017.2 Safari/535.19'
net_gateway = 'http://gw.bupt.edu.cn'


def get_passwd2(passwd):
    m = md5.new()
    m.update(passwd)
    passwd2 = m.hexdigest()
    passwd2 = passwd2[8:24]
    return passwd2

def do_logout(user, passwd):
    headers = {
            'User-Agent' : user_agent,
            }
    data = 'username=' + user + '&password=' + passwd + '&drop=0&type=1&n=1'
    logout_url = net_gateway + '/cgi-bin/force_logout'
    logout_req = urllib2.Request(url=logout_url, data=data, headers=headers)
    try:
        logout_rsp = urllib2.urlopen(logout_req)
        page = logout_rsp.read()
        print page
    except Exception, e:
        raise e

def do_login(user, passwd):
    headers = {
            'User-Agent' : user_agent,
            }

    passwd2 = get_passwd2(passwd)
    data = {
            'username' : user,
            'password' : passwd2,
            'drop'     : 0,
            'type'     : 1,
            'n'        : 100
            }
    data = urllib.urlencode(data)
    
    login_url = net_gateway + '/cgi-bin/do_login'
    login_req = urllib2.Request(url=login_url, data=data, headers=headers)
    try:
        login_rsp = urllib2.urlopen(login_req)
        page = login_rsp.read()
        #page == 'online_num_error'
        return page
    except Exception, e:
        raise e

def test_network():
    headers = {
            'User-Agent' : user_agent,
            }
    req = urllib2.Request('http://www.douban.com', headers=headers)
    rsp = urllib2.urlopen(req)
    page = rsp.read()
    rst = re.search('http://(\d{1,3}\.){3}\d{1,3}/muxjp\.php', page)
    if rst is None:
        return 'no need login'
    else:
        return 'need login'

def do_auth(user, passwd):
    test = test_network()
    if test == 'need login':
        try_time = 0
        msg = do_login(user, passwd)
        while msg == 'online_num_error' and try_time < 10:
            try_time += 1
            do_logout(user, passwd)
            print 'try logout times:%d' % try_time
            time.sleep(3)
            msg = do_login(user, passwd)
        print msg
    else:
        print test
    
if __name__ == '__main__':
    parser = optparse.OptionParser()
    parser.add_option('-t', type='string', dest='t', default='login', help='auth type, default is "login", you can use "logout"')
    (options, args) = parser.parse_args()
    if options.t == 'login':
        do_auth(user, passwd)
    elif options.t == 'logout':
        do_logout(user, passwd)