Automatic login to Deutsche Bahn Wi-Fi

bahn_login.py

#!/usr/bin/env python3

import re
import requests

LOGIN_URL = "http://www.wifionice.de/de/"
CSRF_REGEX = re.compile(b'"CSRFToken" value="([0-9a-f]+)"')

print("Einloggen...")
with requests.Session() as s:
    resp = s.get(LOGIN_URL)
    for line in resp.iter_lines():
        match = CSRF_REGEX.search(line)
        if match:
            token = match.group(1).decode(resp.encoding)
    login_data = {"login": "true", "CSRFToken": token, "connect": ""}
    resp = s.post(LOGIN_URL, data=login_data)
    for line in resp.iter_lines():
        if b'class="user-online' in line:
            print("Login erfolgreich!")
            break

I just trying to adopt this on a Raspberry Pico W with Micropython but it does not work. Did somebody try this?

I have not used this script in a long time, but I'm currently riding an ICE train and found following small differences:

• The login URL is now https://login.wifionice.de/de/. Scraping the CSRF token should still work the same way.
• POST data now only consists of the login and CSRFToken parameters.
• Either send the request with allow_redirects=False and check whether the Location header points to https://iceportal.de, or do another GET request and search for "Sie sind online".

The script should also work for DB station Wi-Fi (WIFI@DB) and DB Systel (dbs4public) hotspots, but the hostnames may vary.