def registration(request):
cletters = random.choice(ascii_lowercase) + random.choice(ascii_lowercase) + random.choice(ascii_lowercase) + random.choice(ascii_lowercase)
ckey = str(random.SystemRandom().randrange(0, 18446744073709551616L)) + str(time.time())
key_ = unicodedata.normalize('NFKD', ckey + unicode(cletters.upper())).encode('ascii', 'ignore') + unicodedata.normalize('NFKD', unicode(cletters)).encode('ascii', 'ignore')
key = hashlib.sha1(key_).hexdigest()
print key
print cletters
cptmod = Captcha()
cptmod.hash = key
cptmod.code = cletters
cptmod.save()
c = { 'key' : key,
'form': RegistrationForm, }
return render(request, 'registration.html', c)
def render(self, name, value, attrs=None):
captcha = Captcha()
raw_html = u'<input type="text" name="%s" />' % name
raw_html = u'%s \r\n %s' % (
raw_html, u'<img class="captcha" src="%s" />' % captcha.url)
return mark_safe(raw_html)
def __init__(self, *args, **kwargs):
super(CaptchaForm, self).__init__(*args, **kwargs)
# The super.__init__ call does not actually set the data or initial
# onto the fields/widgets, so we just need the captcha_id field and
# widget to exist before self.get_captcha() is called
self.fields['captcha_id'] = forms.IntegerField()
self.fields['captcha_id'].widget = forms.HiddenInput()
if not self.is_bound:
# New form, new captcha
c = Captcha(text=get_string())
c.save()
# Ensure that the hidden field is properly populated
self.initial['captcha_id'] = c.id
else:
c = self.get_captcha()
self.fields['captcha'] = CaptchaField(label="Turing test", captcha=c)
def get_captcha(self):
# Somewhat hacky, but best way I had to get the captcha id
f = self.fields['captcha_id']
w = f.widget
#value = w.value_from_datadict(self.data, None, self.add_prefix('captcha_id'))
#make it work in 0.96, where value_from_datadict() have 2 arguments
value = w.value_from_datadict(self.data, self.add_prefix('captcha_id'))
captcha_id = f.clean(value)
try:
# Always clean expired captchas before getting one for validation
Captcha.clean_expired()
return Captcha.objects.get(pk=captcha_id)
except Captcha.DoesNotExist:
# The original captcha expired, make a new one for revalidation
c = Captcha(id=captcha_id,text=get_string())
c.save()
return c
