67 lines
2.0 KiB
Python
67 lines
2.0 KiB
Python
# -*- coding: utf-8 -*-
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"""Captcha validator, see captcha.txt for design notes.
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"""
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from Acquisition import aq_inner
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from z3c.form import validator
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from z3c.form.interfaces import IValidator
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from zope.component import getMultiAdapter, queryUtility
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from zope.interface import implements, Interface
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from zope.schema.interfaces import IField
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from zope.component import adapts
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from plone.registry.interfaces import IRegistry
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from plone.app.discussion.interfaces import ICaptcha
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from plone.app.discussion.interfaces import IDiscussionSettings
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from plone.app.discussion.interfaces import IDiscussionLayer
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try:
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from collective.z3cform.norobots.validator import WrongNorobotsAnswer
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except ImportError:
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pass
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try:
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from plone.formwidget.captcha.validator import WrongCaptchaCode
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except ImportError:
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pass
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try:
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from plone.formwidget.recaptcha.validator import WrongCaptchaCode
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except ImportError:
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pass
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class CaptchaValidator(validator.SimpleFieldValidator):
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implements(IValidator)
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adapts(Interface, IDiscussionLayer, Interface, IField, Interface)
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# Object, Request, Form, Field, Widget,
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# We adapt the CaptchaValidator class to all form fields (IField)
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def validate(self, value):
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super(CaptchaValidator, self).validate(value)
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registry = queryUtility(IRegistry)
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settings = registry.forInterface(IDiscussionSettings, check=False)
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if settings.captcha in ('captcha', 'recaptcha', 'norobots'):
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captcha = getMultiAdapter((aq_inner(self.context), self.request),
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name=settings.captcha)
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if not captcha.verify(input=value):
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if settings.captcha == 'norobots':
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raise WrongNorobotsAnswer
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else:
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raise WrongCaptchaCode
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else:
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return True
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# Register Captcha validator for the Captcha field in the ICaptcha Form
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validator.WidgetValidatorDiscriminators(CaptchaValidator,
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field=ICaptcha['captcha'])
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