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fields.py
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Created
Wed, Nov 19, 1:31 PM

fields.py
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import os
import sys
from django import forms
from django.conf import settings
try:
from django.utils.encoding import smart_unicode
except ImportError:
from django.utils.encoding import smart_text as smart_unicode
from django.core.exceptions import ValidationError
from django.utils.translation import ugettext_lazy as _
from . import client
from .widgets import NoReCaptchaWidget
class NoReCaptchaField(forms.CharField):
default_error_messages = {
'captcha_invalid': _('Incorrect, please try again.')
}
def __init__(self, site_key=None, secret_key=None,
gtag_attrs={}, js_params={}, *args, **kwargs):
"""
site_key = the Google provided site_key
secret_key = the Google provided secret_key
gtag_attrs = html input attributes to provide
to the g-recaptcha tag
js_params = parameters to passed to the javascript backend
See: https://developers.google.com/recaptcha/docs/display
"""
site_key = site_key if site_key else \
settings.NORECAPTCHA_SITE_KEY
self.secret_key = secret_key if secret_key else \
settings.NORECAPTCHA_SECRET_KEY
self.widget = NoReCaptchaWidget(
site_key=site_key, gtag_attrs=gtag_attrs, js_params=js_params)
self.required = True
super(NoReCaptchaField, self).__init__(*args, **kwargs)
def get_remote_ip(self):
"""
Return the remote IP from the request.
First check the REMOTE_ADDR header and then the
HTTP_X_FORWARDED_FOR header.
"""
f = sys._getframe()
while f:
if 'request' in f.f_locals:
request = f.f_locals['request']
if request:
remote_ip = request.META.get('REMOTE_ADDR', '')
forwarded_ip = request.META.get('HTTP_X_FORWARDED_FOR', '')
ip = remote_ip if not forwarded_ip else forwarded_ip
return ip
f = f.f_back
def clean(self, value):
super(NoReCaptchaField, self).clean(value)
g_nocaptcha_response_value = smart_unicode(value)
if os.environ.get('NORECAPTCHA_TESTING', None) == 'True' \
and g_nocaptcha_response_value == 'PASSED':
return value
check_captcha = client.submit(
g_nocaptcha_response_value, secret_key=self.secret_key,
remoteip=self.get_remote_ip())
if not check_captcha.is_valid:
raise ValidationError(self.error_messages['captcha_invalid'])
return value

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