NetworkManager script to automatically log into NS "WiFi in de trein" network. Place in `/etc/NetworkManager/dispatcher.d`.

ns-login.py

#!/usr/bin/env python3
import syslog
import os
import sys
import requests
import time
from bs4 import BeautifulSoup


def attempt_login():
    syslog.syslog('Requesting homepage for CSRF token...')
    response = requests.get('http://portal.nstrein.ns.nl')
    response.raise_for_status()
    soup = BeautifulSoup(response.text, 'lxml')
    input = soup.find('input', {'id': 'csrfToken'})
    csrf_token = input['value']
    syslog.syslog('Making internet request...')
    requests.post('http://portal.nstrein.ns.nl/nstrein:main/internet?csrfToken=' + csrf_token).raise_for_status()


def check_connection():
    response = requests.get('https://icanhazip.com')
    response.raise_for_status()
    syslog.syslog('Connected to the internet with external IP address: ' + response.text.strip())


def main():
    if sys.argv[2] != 'up':
        syslog.syslog('Ignoring non-up action: ' + sys.argv[2])
        return

    if os.environ['CONNECTION_ID'].lower() != 'wifi in de trein':
        syslog.syslog('Ignoring connection: ' + os.environ['CONNECTION_ID'])
        return

    while True:
        try:
            attempt_login()
            check_connection()
            return
        except Exception as ex:
            print(ex)

        time.sleep(5)

main()

Dependencies for Fedora: dnf install python3-requests python3-beautifulsoup4 python3-lxml