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# Copyright (C) 2018 Philipp Hörist <philipp AT hoerist.com>
#
# This file is part of nbxmpp.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 3
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; If not, see <http://www.gnu.org/licenses/>.
import logging
from nbxmpp.protocol import NS_CAPTCHA
from nbxmpp.protocol import NS_DATA
from nbxmpp.protocol import InvalidStanza
from nbxmpp.structs import StanzaHandler
from nbxmpp.structs import CaptchaData
from nbxmpp.modules.dataforms import extend_form
from nbxmpp.modules.bits_of_binary import parse_bob_data
log = logging.getLogger('nbxmpp.m.captcha')
class Captcha:
def __init__(self, client):
self._client = client
self.handlers = [
StanzaHandler(name='message',
callback=self._process_captcha,
ns=NS_CAPTCHA,
priority=40),
]
@staticmethod
def _process_captcha(_con, stanza, properties):
captcha = stanza.getTag('captcha', namespace=NS_CAPTCHA)
if captcha is None:
return
data_form = captcha.getTag('x', namespace=NS_DATA)
if data_form is None:
log.warning('Invalid captcha form')
log.warning(stanza)
return
form = extend_form(node=data_form)
try:
bob_data = parse_bob_data(stanza)
except InvalidStanza:
bob_data = None
properties.captcha = CaptchaData(form=form,
bob_data=bob_data)
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