view sat/plugins/plugin_xep_0070.py @ 2617:81b70eeb710f

quick_frontend(contact list): refactored update: update is now called with appropriate constant value (C.UPDATE_ADD, C.UPDATE_DELETE, C.UPDATE_MODIFY and so on) when a widget change visibility according to current options. Before it was linked to cache only (C.UPDATE_ADD was only called when contact was first added to cache). This make widget handling in frontends more easy. Renamed entityToShow to entityVisible, which seems to correspond better. Started reducing lines lenght to 90 chars as a test. May become the new coding style soon.
author Goffi <goffi@goffi.org>
date Sun, 24 Jun 2018 21:59:29 +0200
parents 26edcf3a30eb
children 56f94936df1e
line wrap: on
line source

#!/usr/bin/python
# -*- coding: utf-8 -*-

# SAT plugin for managing xep-0070
# Copyright (C) 2009-2016 Geoffrey POUZET (chteufleur@kingpenguin.tk)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
from sat.core.i18n import _, D_
from sat.core.constants import Const as C
from sat.core.log import getLogger
from twisted.words.protocols.jabber import xmlstream
from twisted.words.protocols import jabber
log = getLogger(__name__)
from sat.tools import xml_tools

from wokkel import disco, iwokkel
from zope.interface import implements
try:
    from twisted.words.protocols.xmlstream import XMPPHandler
except ImportError:
    from wokkel.subprotocols import XMPPHandler


NS_HTTP_AUTH = 'http://jabber.org/protocol/http-auth'

IQ = 'iq'
IQ_GET = '/'+IQ+'[@type="get"]'
IQ_HTTP_AUTH_REQUEST = IQ_GET + '/confirm[@xmlns="' + NS_HTTP_AUTH + '"]'

MSG = 'message'
MSG_GET = '/'+MSG+'[@type="normal"]'
MSG_HTTP_AUTH_REQUEST = MSG_GET + '/confirm[@xmlns="' + NS_HTTP_AUTH + '"]'


PLUGIN_INFO = {
    C.PI_NAME: "XEP-0070 Plugin",
    C.PI_IMPORT_NAME: "XEP-0070",
    C.PI_TYPE: "XEP",
    C.PI_PROTOCOLS: ["XEP-0070"],
    C.PI_DEPENDENCIES: [],
    C.PI_MAIN: "XEP_0070",
    C.PI_HANDLER: "yes",
    C.PI_DESCRIPTION: _("""Implementation of HTTP Requests via XMPP""")
}


class XEP_0070(object):
    """
    Implementation for XEP 0070.
    """

    def __init__(self, host):
        log.info(_(u"Plugin XEP_0070 initialization"))
        self.host = host
        self._dictRequest = dict()

    def getHandler(self, client):
        return XEP_0070_handler(self, client.profile)

    def onHttpAuthRequestIQ(self, iq_elt, client):
        """This method is called on confirmation request received (XEP-0070 #4.5)

        @param iq_elt: IQ element
        @param client: %(doc_client)s
        """
        log.info(_("XEP-0070 Verifying HTTP Requests via XMPP (iq)"))
        self._treatHttpAuthRequest(iq_elt, IQ, client)

    def onHttpAuthRequestMsg(self, msg_elt, client):
        """This method is called on confirmation request received (XEP-0070 #4.5)

        @param msg_elt: message element
        @param client: %(doc_client)s
        """
        log.info(_("XEP-0070 Verifying HTTP Requests via XMPP (message)"))
        self._treatHttpAuthRequest(msg_elt, MSG, client)

    def _treatHttpAuthRequest(self, elt, stanzaType, client):
        elt.handled = True
        auth_elt = elt.elements(NS_HTTP_AUTH, 'confirm').next()
        auth_id = auth_elt['id']
        auth_method = auth_elt['method']
        auth_url = auth_elt['url']
        self._dictRequest[client] = (auth_id, auth_method, auth_url, stanzaType, elt)

        confirm_ui = xml_tools.XMLUI("form", title=D_(u"Auth confirmation"), submit_id='')
        confirm_ui.addText(D_(u"{} needs to validate your identity, do you agreeĀ ?".format(auth_url)))
        confirm_ui.addText(D_(u"Validation code : {}".format(auth_id)))
        confirm_ui.addText(D_(u"Please check that this code is the same as on {}".format(auth_url)))
        confirm_ui.addText(u"")
        confirm_ui.addText(D_(u"Submit to authorize, cancel otherwise."))
        d = xml_tools.deferredUI(self.host, confirm_ui, chained=False)
        d.addCallback(self._authRequestCallback, client.profile)
        self.host.actionNew({u"xmlui": confirm_ui.toXml()}, profile=client.profile)

    def _authRequestCallback(self, result, profile):
        client = self.host.getClient(profile)
        try:
            cancelled = result['cancelled']
        except KeyError:
            cancelled = False

        authorized = False

        if cancelled:
            auth_id, auth_method, auth_url, stanzaType, elt = self._dictRequest[client]
            del self._dictRequest[client]
            authorized = False
        else:
            try:
                auth_id, auth_method, auth_url, stanzaType, elt = self._dictRequest[client]
                del self._dictRequest[client]
                authorized = True
            except KeyError:
                authorized = False

        if authorized:
            if (stanzaType == IQ):
                # iq
                log.debug(_(u"XEP-0070 reply iq"))
                iq_result_elt = xmlstream.toResponse(elt, 'result')
                client.send(iq_result_elt)
            elif (stanzaType == MSG):
                # message
                log.debug(_(u"XEP-0070 reply message"))
                msg_result_elt = xmlstream.toResponse(elt, 'result')
                msg_result_elt.addChild(elt.elements(NS_HTTP_AUTH, 'confirm').next())
                client.send(msg_result_elt)
        else:
            log.debug(_(u"XEP-0070 reply error"))
            result_elt = jabber.error.StanzaError("not-authorized").toResponse(elt)
            client.send(result_elt)


class XEP_0070_handler(XMPPHandler):
    implements(iwokkel.IDisco)

    def __init__(self, plugin_parent, profile):
        self.plugin_parent = plugin_parent
        self.host = plugin_parent.host
        self.profile = profile

    def connectionInitialized(self):
        self.xmlstream.addObserver(IQ_HTTP_AUTH_REQUEST, self.plugin_parent.onHttpAuthRequestIQ, client=self.parent)
        self.xmlstream.addObserver(MSG_HTTP_AUTH_REQUEST, self.plugin_parent.onHttpAuthRequestMsg, client=self.parent)

    def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
        return [disco.DiscoFeature(NS_HTTP_AUTH)]

    def getDiscoItems(self, requestor, target, nodeIdentifier=''):
        return []