77 lines
2.8 KiB
Plaintext
77 lines
2.8 KiB
Plaintext
"""
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recaptcha-django
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ReCAPTCHA (Completely Automated Public Turing test to tell Computers and
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Humans Apart - while helping digitize books, newspapers, and old time radio
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shows) module for django
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"""
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from django.forms import Widget, Field, ValidationError
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from django.conf import settings
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from django.utils.translation import get_language, ugettext_lazy as _
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from django.utils.html import conditional_escape
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from django.utils.safestring import mark_safe
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from recaptcha.client import captcha
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HUMAN_ERRORS = {
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'unknown': _(u'Unknown error.'),
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'invalid-site-public-key': _(u'ReCAPTCHA is wrongly configured.'),
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'invalid-site-private-key': _(u'ReCAPTCHA is wrongly configured.'),
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'invalid-request-cookie': _(u'Bad reCAPTCHA challenge parameter.'),
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'incorrect-captcha-sol': _(u'The CAPTCHA solution was incorrect.'),
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'verify-params-incorrect': _(u'Bad reCAPTCHA verification parameters.'),
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'invalid-referrer': _(u'Provided reCAPTCHA API keys are not valid for this domain.'),
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'recaptcha-not-reachable': _(u'ReCAPTCHA could not be reached.')
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}
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class ReCaptchaWidget(Widget):
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"""
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A Widget that renders a ReCAPTCHA form
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"""
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options = ['theme', 'lang', 'custom_theme_widget', 'tabindex']
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def render(self, name, value, attrs=None):
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final_attrs = self.build_attrs(attrs)
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error = final_attrs.get('error', None)
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html = captcha.displayhtml(settings.RECAPTCHA_PUBLIC_KEY, error=error)
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options = u',\n'.join([u'%s: "%s"' % (k, conditional_escape(v)) \
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for k, v in final_attrs.items() if k in self.options])
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return mark_safe(u"""<script type="text/javascript">
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var RecaptchaOptions = {
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%s
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};
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</script>
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%s
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""" % (options, html))
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def value_from_datadict(self, data, files, name):
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"""
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Generates Widget value from data dictionary.
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"""
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try:
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return {'challenge': data['recaptcha_challenge_field'],
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'response': data['recaptcha_response_field'],
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'ip': data['recaptcha_ip_field']}
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except KeyError:
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return None
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class ReCaptchaField(Field):
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"""
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Field definition for a ReCAPTCHA
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"""
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widget = ReCaptchaWidget
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def clean(self, value):
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if value is None:
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raise ValidationError(_('Invalid request'))
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resp = captcha.submit(value.get('challenge', None),
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value.get('response', None),
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settings.RECAPTCHA_PRIVATE_KEY,
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value.get('ip', None))
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if not resp.is_valid:
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self.widget.attrs['error'] = resp.error_code
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raise ValidationError(HUMAN_ERRORS.get(resp.error_code, _(u'Unknown error.')))
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