source: products/quintagroup.captcha.core/trunk/quintagroup/captcha/core/skins/captcha_core/dynamic/captcha_validator.vpy @ 3618

from quintagroup.captcha.core import ProductMessageFactory as _
from quintagroup.captcha.core.utils import decrypt, parseKey, \
    encrypt1, getWord
from DateTime import DateTime
from Products.CMFCore.utils import getToolByName

def set_error():
    message = _(u"Please re-enter validation code.")
    context.plone_utils.addPortalMessage(message, 'error')
    state.setError('key', message, 'key_required')
    return state.set(status="failure")

if state.getStatus()=='failure':
    return  state
request = context.REQUEST

test_key = request.get('key', '')
hashkey = request.get('hashkey', '')
try:
    decrypted_key = decrypt(context.captcha_key, hashkey)
except:
    return set_error()
parsed_key = parseKey(decrypted_key)

index = parsed_key['key']
date = parsed_key['date']

enc = test_key
try:
    solution = getWord(int(index))
except AttributeError:
    return set_error()
captcha_tool = getToolByName(context, 'portal_captchas')
if (enc != solution) or (captcha_tool.has_key(decrypted_key)) \
    or (DateTime().timeTime() - float(date)>3600):
    return set_error() 
else:
    captcha_tool.addExpiredKey(decrypted_key)
    return state.set(status="success")