Login to BJUT network with ipv4 and ipv6.

bjut_login.py

import requests
import getpass
import sys

username = input('username=')
password = getpass.getpass('password=')

headers = {
    'Connection': 'keep-alive',
    'Cache-Control': 'max-age=0',
    'sec-ch-ua': '"Google Chrome";v="89", "Chromium";v="89", ";Not A Brand";v="99"',
    'sec-ch-ua-mobile': '?0',
    'Origin': 'http://lgn6.bjut.edu.cn',
    'Upgrade-Insecure-Requests': '1',
    'DNT': '1',
    'Content-Type': 'application/x-www-form-urlencoded',
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Safari/537.36',
    'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9',
    'Sec-Fetch-Site': 'cross-site',
    'Sec-Fetch-Mode': 'navigate',
    'Sec-Fetch-User': '?1',
    'Sec-Fetch-Dest': 'document',
    'Referer': 'http://lgn6.bjut.edu.cn/',
    'Accept-Language': 'en-US,en;q=0.9,zh-CN;q=0.8,zh;q=0.7',
}

params = (
    ('https://lgn.bjut.edu.cn', ''),
)

data = {
  'DDDDD': username,
  'upass': password,
  'v46s': '0',
  'v6ip': '',
  'f4serip': '172.30.201.10',
  '0MKKey': ''
}

try:
    response = requests.post('https://lgn6.bjut.edu.cn/V6?https://lgn.bjut.edu.cn', headers=headers, data=data)
    print(response.text)
except:
    input('something went wrong...')
    sys.exit()

tmp = response.text.split('value=')
v6ip = tmp[-1].split('\'')[1]


headers = {
    'Connection': 'keep-alive',
    'Cache-Control': 'max-age=0',
    'sec-ch-ua': '"Google Chrome";v="89", "Chromium";v="89", ";Not A Brand";v="99"',
    'sec-ch-ua-mobile': '?0',
    'Origin': 'https://lgn6.bjut.edu.cn',
    'Upgrade-Insecure-Requests': '1',
    'DNT': '1',
    'Content-Type': 'application/x-www-form-urlencoded',
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Safari/537.36',
    'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9',
    'Sec-Fetch-Site': 'same-site',
    'Sec-Fetch-Mode': 'navigate',
    'Sec-Fetch-Dest': 'document',
    'Referer': 'https://lgn6.bjut.edu.cn/',
    'Accept-Language': 'en-US,en;q=0.9,zh-CN;q=0.8,zh;q=0.7',
}

data = {
  'DDDDD': username,
  'upass': password,
  '0MKKey': 'Login',
  'v6ip': v6ip
}

try:
    response = requests.post('https://lgn.bjut.edu.cn/', headers=headers, data=data)
    print(response.text)
except:
    input('something went wrong...')
    sys.exit()


if 'You have successfully logged into our system.' in response.text:
    print('***Login successful***')
    print('***Login successful***')
    print('***Login successful***')
    print('***Login successful***')
    print('***Login successful***')
    print('***Login successful***')
    print('***Login successful***')
    print('***Login successful***')
    

input('press any key to continue...')