Monitor Django site with authentication

# www.fduran.com
# script to test/monitor if a Django site using authentication is up

# install pip if not already in system
apt-get install python-setuptools python-dev build-essential
easy_install -U pip

# install requests
pip install requests

# script
import requests

# constants
url = 'https://example.com/login/'
username = 'valid user'
password = 'valid password'
expected = 'string in landing authenticated page' # easier if not in login page

message = ''
g = requests.get(url)
if g.status_code != 200:
    # alert page down
    message = "ALERT: Page down"
else:
    sessionid = g.cookies['sessionid']
    csrftoken = g.cookies['csrftoken']
    cookies = {'sessionid':sessionid, 'csrftoken':csrftoken}
    payload = {'username':username, 'password':password, 'csrfmiddlewaretoken':csrftoken, 'next':''}
    headers = {'Referer': url}
    p = requests.post(url, cookies=cookies, data=payload, headers=headers)

    if p.status_code == 200:
        if p.text.find('Please try again') != -1:
            message = "ALERT: Wrong username or password"
        elif p.text.find(expected) != -1:
            # all good
            #message = "Good, expected content found"
            pass
        else:
            # alert
            message = "ALERT: expected content not found"
    else:
        # alert
        message =  "ALERT: cannot authenticate"


# alert
if (message):
    # send email, SMS etc
    print message