Code examples to follow along with http://brett.is/writing/about/third-party-tracking-pixels/
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66 lines
2.2 KiB
66 lines
2.2 KiB
from Cookie import SimpleCookie
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from urllib import quote
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from urlparse import parse_qs
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from uuid import uuid4
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from wsgiref.simple_server import make_server
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def tracking_server(environ, respond):
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"""Function used to handle all requests made to
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this tracking server
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"""
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if environ['PATH_INFO'] == '/track.js':
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return track_user(environ, respond)
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elif environ['PATH_INFO'] == '/favicon.ico':
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respond('204 NO CONTENT', [])
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return ['']
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else:
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return html_content(environ, respond)
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def track_user(environ, respond):
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"""Function used to handle the route: /track.js
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This will check to make sure that the user
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has a cookie id=<USER_ID>, if not then we will
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generate a new uuid4 id for them and set the
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cookie.
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This will also print to stdout when we generate
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a new cookie as well as what the user searched for.
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"""
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cookies = SimpleCookie()
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cookies.load(environ.get('HTTP_COOKIE', ''))
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user_id = cookies.get('id')
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if not user_id:
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user_id = uuid4()
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print 'User did not have id, giving: %s' % user_id
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query = parse_qs(environ['QUERY_STRING'])
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search = query.get('s', [''])[0]
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print 'User %s Searched For: %s' % (user_id, search)
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headers = [('Content-Type', 'application/javascript'),
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('Set-Cookie', 'id=%s' % user_id)]
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respond('200 OK', headers)
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return ['']
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def html_content(environ, respond):
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"""Function used to handle any route that is not /track.js
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This will return to the user a very basic html page that has
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a script that to call /track.js?s=<SEARCH> with the content
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of the ?search= parameter to this request.
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"""
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query = parse_qs(environ['QUERY_STRING'])
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search = quote(query.get('search', [''])[0])
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headers = [('Content-Type', 'text/html')]
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respond('200 OK', headers)
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return ['<html><head></head><body><h2>Welcome</h2><script src="/track.js?s=%s"></script></body></html>\n' % search]
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if __name__ == '__main__':
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try:
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httpd = make_server('', 8000, tracking_server)
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print 'Tracking Server Listening on Port 8000...'
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httpd.serve_forever()
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except KeyboardInterrupt:
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print 'Exiting...'
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