plone.app.discussion/plone/app/discussion/browser/validator.py

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# Captcha/ReCaptcha validators. We override the standard validators from
# plone.formwidget.captcha and plone.formwidget.recaptcha, in order to
# switch between the two. This is necessary, because the zcml registration
# of the CaptchaValidator has to be there, no matter which captcha solution
# is installed, or even when no captcha solution is installed.
from Acquisition import aq_inner
from z3c.form import validator
from z3c.form.interfaces import IValidator
from zope.component import getMultiAdapter, provideAdapter, queryUtility
from zope.schema import ValidationError
from plone.registry.interfaces import IRegistry
from plone.app.discussion.interfaces import IDiscussionSettings
from plone.formwidget.captcha import CaptchaMessageFactory as _
class WrongCaptchaCode(ValidationError):
__doc__ = _("""The code you entered was wrong, please enter the new one.""")
class CaptchaValidator(validator.SimpleFieldValidator):
def validate(self, value):
super(CaptchaValidator, self).validate(value)
registry = queryUtility(IRegistry)
settings = registry.forInterface(IDiscussionSettings)
if settings.captcha == 'captcha':
# Fetch captcha view
captcha = getMultiAdapter((aq_inner(self.context), self.request), name='captcha')
if value:
if not captcha.verify(value):
raise WrongCaptchaCode
else:
return True
raise WrongCaptchaCode
elif settings.captcha == 'recaptcha':
# Fetch recatpcha view
captcha = getMultiAdapter((aq_inner(self.context), self.request), name='recaptcha')
if not captcha.verify():
raise WrongCaptchaCode
else:
return True