pythonurllib2

How do I prevent Python's urllib(2) from following a redirect

I am currently trying to log into a site using Python however the site seems to be sending a cookie and a redirect statement on the same page. Python seems to be following that redirect thus preventing me from reading the cookie send by the login page. How do I prevent Python's urllib (or urllib2) urlopen from following the redirect?

Solution

  • You could do a couple of things:

    1. Build your own HTTPRedirectHandler that intercepts each redirect
    2. Create an instance of HTTPCookieProcessor and install that opener so that you have access to the cookiejar.

    This is a quick little thing that shows both

    import urllib2

#redirect_handler = urllib2.HTTPRedirectHandler()

class MyHTTPRedirectHandler(urllib2.HTTPRedirectHandler):
    def http_error_302(self, req, fp, code, msg, headers):
        print "Cookie Manip Right Here"
        return urllib2.HTTPRedirectHandler.http_error_302(self, req, fp, code, msg, headers)

    http_error_301 = http_error_303 = http_error_307 = http_error_302

cookieprocessor = urllib2.HTTPCookieProcessor()

opener = urllib2.build_opener(MyHTTPRedirectHandler, cookieprocessor)
urllib2.install_opener(opener)

response =urllib2.urlopen("WHEREEVER")
print response.read()

print cookieprocessor.cookiejar