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client.py
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Created
Sun, Mar 22, 3:05 AM

client.py
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import logging
import django
try:
import json
except ImportError:
from django.utils import simplejson as json
from django.conf import settings
from django.template.loader import render_to_string
from django.utils.translation import get_language
from django.utils.encoding import force_text
from ._compat import want_bytes, urlencode, Request, urlopen, PY2
logger = logging.getLogger(__name__)
DEFAULT_VERIFY_URL = "https://www.google.com/recaptcha/api/siteverify"
DEFAULT_FALLBACK_URL = "https://www.google.com/recaptcha/api/fallback"
DEFAULT_WIDGET_TEMPLATE = 'nocaptcha_recaptcha/widget.html'
VERIFY_URL = getattr(settings, "NORECAPTCHA_VERIFY_URL",
DEFAULT_VERIFY_URL)
FALLBACK_URL = getattr(settings, "NORECAPTCHA_FALLBACK_URL",
DEFAULT_FALLBACK_URL)
WIDGET_TEMPLATE = getattr(settings, "NORECAPTCHA_WIDGET_TEMPLATE",
DEFAULT_WIDGET_TEMPLATE)
class RecaptchaResponse(object):
def __init__(self, is_valid, error_codes=None):
self.is_valid = is_valid
self.error_codes = error_codes
def displayhtml(site_key, gtag_attrs, js_params):
"""Gets the HTML to display for reCAPTCHA
site_key -- The public api key provided by Google ReCaptcha
"""
if 'hl' not in js_params:
js_params['hl'] = get_language()[:2]
return render_to_string(
WIDGET_TEMPLATE,
{
'fallback_url': FALLBACK_URL,
'site_key': site_key,
'js_params': js_params,
'gtag_attrs': gtag_attrs,
})
def submit(g_nocaptcha_response_value, secret_key, remoteip):
"""
Submits a reCAPTCHA request for verification. Returns RecaptchaResponse
for the request
recaptcha_response_field -- The value of recaptcha_response_field
from the form
secret_key -- your reCAPTCHA private key
remoteip -- the user's ip address
"""
if not (g_nocaptcha_response_value and len(g_nocaptcha_response_value)):
return RecaptchaResponse(
is_valid=False,
error_codes=['incorrect-captcha-sol']
)
params = urlencode({
'secret': want_bytes(secret_key),
'remoteip': want_bytes(remoteip),
'response': want_bytes(g_nocaptcha_response_value),
})
if not PY2:
params = params.encode('utf-8')
req = Request(
url=VERIFY_URL, data=params,
headers={
'Content-type': 'application/x-www-form-urlencoded',
'User-agent': 'noReCAPTCHA Python'
}
)
httpresp = urlopen(req)
try:
res = force_text(httpresp.read())
return_values = json.loads(res)
except (ValueError, TypeError):
return RecaptchaResponse(
is_valid=False,
error_codes=['json-read-issue']
)
except:
return RecaptchaResponse(
is_valid=False,
error_codes=['unknown-network-issue']
)
finally:
httpresp.close()
return_code = return_values.get("success", False)
error_codes = return_values.get('error-codes', [])
logger.debug("%s - %s" % (return_code, error_codes))
if return_code is True:
return RecaptchaResponse(is_valid=True)
else:
return RecaptchaResponse(is_valid=False, error_codes=error_codes)

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