[1960] | 1 | from DateTime import DateTime |
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| 2 | |
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| 3 | from zope.interface import Interface, Invalid |
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| 4 | from zope.component import adapts |
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| 5 | from zope.i18n import MessageFactory |
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| 6 | |
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| 7 | from Products.CMFCore.utils import getToolByName |
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| 8 | |
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| 9 | from quintagroup.plonecaptchas.utils import decrypt, parseKey, encrypt1, getWord |
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| 10 | |
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| 11 | from z3c.form.validator import SimpleFieldValidator |
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| 12 | |
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| 13 | from interfaces import ICaptcha |
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| 14 | |
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| 15 | _ = MessageFactory('quintagroup.z3cform.captcha') |
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| 16 | |
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| 17 | class CaptchaValidator(SimpleFieldValidator): |
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| 18 | """Captcha validator""" |
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| 19 | |
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| 20 | adapts(Interface, Interface, Interface, ICaptcha, Interface) |
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| 21 | |
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| 22 | def validate(self, value): |
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| 23 | # Verify the user input against the captcha |
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| 24 | errors = () |
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| 25 | context = self.context |
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| 26 | request = self.request |
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| 27 | value = value or '' |
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| 28 | captcha_type = context.getCaptchaType() |
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| 29 | if captcha_type in ['static', 'dynamic']: |
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| 30 | hashkey = request.get('%shashkey' % self.widget.form.prefix, '') |
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| 31 | decrypted_key = decrypt(context.captcha_key, hashkey) |
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| 32 | parsed_key = parseKey(decrypted_key) |
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| 33 | |
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| 34 | index = parsed_key['key'] |
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| 35 | date = parsed_key['date'] |
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| 36 | |
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| 37 | if captcha_type == 'static': |
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| 38 | img = getattr(context, '%s.jpg' % index) |
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| 39 | solution = img.title |
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| 40 | enc = encrypt1(value) |
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| 41 | else: |
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| 42 | enc = value |
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| 43 | solution = getWord(int(index)) |
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| 44 | |
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| 45 | captcha_tool = getToolByName(context, 'portal_captchas') |
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| 46 | if (enc != solution) or (captcha_tool.has_key(decrypted_key)) or (DateTime().timeTime() - float(date) > 3600): |
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| 47 | raise ValueError(_(u'Please re-enter validation code.')) |
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| 48 | else: |
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| 49 | captcha_tool.addExpiredKey(decrypted_key) |
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