Question

InstaMapper is a GPS tracking service that updates the device’s position more frequently when the device is being tracked live on the InstaMapper webpage. I’d like to have this happen all the time so I thought I’d write a python script to login to my account and access the page periodically.

import urllib2, urllib, cookielib

cj = cookielib.LWPCookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj)) 
urllib2.install_opener(opener)

params = urllib.urlencode(dict(username_hb='user', password_hb='hunter2')) 
opener.open('http://www.instamapper.com/fe?action=login', params)
if not 'id' in [cookie.name for cookie in cj]:
    raise ValueError, "Login failed"

# try secured page
resp = opener.open('http://www.instamapper.com/fe?page=track&device_key=abc')
print resp.read()
resp.close()

The ValueError is raised each time. If I remove this and read the response, the page thinks I have disabled cookies and blocks access to that page. Why isn’t cj grabbing the InstaMapper cookie?

Are there better ways to make the tracking service think I’m viewing my account constantly?

Answer 1

action=login is part of the parameters, and should be treated accordingly:

params = urllib.urlencode(dict(action='login', username_hb='user', password_hb='hunter2')) 
opener.open('http://www.instamapper.com/fe', params)

(Also, this particular username/password combination is invalid, I assume, that you actually use a valid username and password in your actual code, otherwise the login fails corretly.)