A page we used on Curse to stop users who are new, who are using old browsers (ones who usually have extreme issues with CSS handling) and recommend they update.
Can easily be modified to suit your needs.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | from django.http import HttpResponse, QueryDict
from django.conf import settings
from cursesite.functions.functions import render_template
ALLOWED_BROWSERS = (
('Firefox', 1.5),
('Opera', 9),
('MSIE', 7),
('Safari', 85),
)
def check_browser(agent):
for b in ALLOWED_BROWSERS:
loc = agent.find(b[0])
if loc != -1:
start = loc+len(b[0])+1
end = agent.find(' ', start)
if end != -1:
version = agent[start:end]
else:
version = agent[start:]
if version == '':
version = '2.0'
elif version[-1] == ';':
version = version[0:-1]
version = version.split('.')
version = "%s.%s" % (version[0].split(')')[0], ''.join(version[1:]).split(',')[0].split('+')[0].split('u')[0].split('a')[0])
if float(version) < float(b[1]):
valid = False
else:
valid = True
ec = {'browser_version': version, 'browser': b[0], 'valid': valid}
return ec
return {'browser': agent, 'browser_version': '', 'valid': True}
class ValidateBrowser(object):
def process_response(self, request, response):
if '_verify_browser' in request.COOKIES or request.META['HTTP_USER_AGENT'] == 'Python-urllib/1.16' or request.GET.get('skipcheck', False) or request.META['HTTP_USER_AGENT'].find('Googlebot') != -1:
return response
agent = request.META['HTTP_USER_AGENT']
ec = check_browser(agent)
if '_verified' in request.GET:
ec.update({'no_cookies': True})
# Redirect URL
if 'PATH_INFO' in request.META:
url = request.META['PATH_INFO']
elif 'REQUEST_URI' in request.META:
url = request.META['REQUEST_URI']
else:
url = '/'
q = QueryDict(request.META['QUERY_STRING'])
if '_verified' not in q:
q = q.copy() # to make it mutable
q.update({'_verified': '1'})
url += "?%s" % q.urlencode()
ec.update({'url': url})
response = render_template(request, 'browsercheck.html', ec)
response.set_cookie('_verify_browser', '1', max_age=60*60*24*30, domain=settings.SESSION_COOKIE_DOMAIN)
return response
|
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