def test_object(self):
captcha = MathCaptcha('1 * 2')
self.assertFalse(
captcha.validate(1)
)
self.assertTrue(
captcha.validate(2)
)
restored = MathCaptcha.from_hash(captcha.hashed)
self.assertEqual(
captcha.question,
restored.question
)
self.assertRaises(
ValueError,
MathCaptcha.from_hash,
captcha.hashed[:40]
)
class CaptchaRegistrationForm(RegistrationForm):
'''
Registration form with captcha protection.
'''
captcha = forms.IntegerField(required=True)
captcha_id = forms.CharField(widget=forms.HiddenInput)
def __init__(self, data=None, *args, **kwargs):
super(CaptchaRegistrationForm, self).__init__(
data,
*args,
**kwargs
)
# Load data
self.tampering = False
if data is None or 'captcha_id' not in data:
self.captcha = MathCaptcha()
else:
try:
self.captcha = MathCaptcha.from_hash(data['captcha_id'])
except ValueError:
self.captcha = MathCaptcha()
self.tampering = True
# Set correct label
self.fields['captcha'].label = _('What is %s') % self.captcha.display
self.fields['captcha_id'].initial = self.captcha.hashed
def clean_captcha(self):
'''
Validation for captcha.
'''
if (self.tampering
or not self.captcha.validate(self.cleaned_data['captcha'])):
raise forms.ValidationError(
_('Please check your math and try again.')
)
if 'email' in self.cleaned_data:
mail = self.cleaned_data['email']
else:
mail = 'NONE'
weblate.logger.info(
'Passed captcha for %s (%s = %s)',
mail,
self.captcha.question,
self.cleaned_data['captcha']
)