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# coding: utf-8
# This file is a part of VK4XMPP transport
# © simpleApps, 2014 — 2015.
from hashlib import sha1
def sendCaptcha(user, url):
logger.debug("VKLogin: sending message with captcha to %s" % user.source)
body = _("WARNING: VK has sent you a CAPTCHA."
" Please, follow %s and enter the text shown on the image to the chat."
" Example: !captcha my_captcha_key. Tnx") % url
msg = xmpp.Message(user.source, body, "chat", frm=TransportID)
x = msg.setTag("x", namespace=xmpp.NS_OOB)
x.setTagData("url", url)
captcha = msg.setTag("captcha", namespace=xmpp.NS_CAPTCHA)
image = utils.getLinkData(url, False)
if image:
hash = sha1(image).hexdigest()
encoded = image.encode("base64")
form = utils.buildDataForm(type="form", fields = [
{"var": "FORM_TYPE", "value": xmpp.NS_CAPTCHA, "type": "hidden"},
{"var": "from", "value": TransportID, "type": "hidden"},
{"var": "ocr", "label": _("Enter shown text"),
"payload": [xmpp.Node("required"),
xmpp.Node("media", {"xmlns": xmpp.NS_MEDIA},
[xmpp.Node("uri", {"type": "image/jpg"},
["cid:sha1+%s@bob.xmpp.org" % hash]
)
])
]}
])
captcha.addChild(node=form)
oob = msg.setTag("data", {"cid": "sha1+%s@bob.xmpp.org" % hash, "type": "image/jpg", "max-age": "0"}, xmpp.NS_URN_OOB)
oob.setData(encoded)
sender(Component, msg)
sendPresence(user.source, TransportID, show="xa", reason=body)
TransportFeatures.update({xmpp.NS_OOB,
xmpp.NS_MEDIA,
xmpp.NS_CAPTCHA,
xmpp.NS_URN_OOB})
registerHandler("evt04", sendCaptcha)
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