view sat/tools/web.py @ 3696:52ee22d78e18

plugin XEP-0384: fix encryption for user own devices: our own jid is added automatically by OMEMO library, but during the generation of the stanza, our list of jids was used to get the keys (and thus our own jid and devices keys was missing). fix 402
author Goffi <goffi@goffi.org>
date Fri, 22 Oct 2021 18:46:51 +0200
parents 7550ae9cfbac
children 65bac82e4049
line wrap: on
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#!/usr/bin/env python3

# Libervia: an XMPP client
# Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)

# 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 OpenSSL import SSL
from zope.interface import implementer
from treq.client import HTTPClient
from twisted.internet.interfaces import IOpenSSLClientConnectionCreator
from twisted.internet import reactor, ssl
from twisted.web import iweb
from twisted.web import client as http_client
from sat.core.log import getLogger


log = getLogger(__name__)


SSLError = SSL.Error


@implementer(IOpenSSLClientConnectionCreator)
class NoCheckConnectionCreator(object):
    def __init__(self, hostname, ctx):
        self._ctx = ctx

    def clientConnectionForTLS(self, tlsProtocol):
        context = self._ctx
        connection = SSL.Connection(context, None)
        connection.set_app_data(tlsProtocol)
        return connection


@implementer(iweb.IPolicyForHTTPS)
class NoCheckContextFactory:
    """Context factory which doesn't do TLS certificate check

    /!\\ it's obvisously a security flaw to use this class,
    and it should be used only with explicit agreement from the end used
    """

    def creatorForNetloc(self, hostname, port):
        log.warning(
            "TLS check disabled for {host} on port {port}".format(
                host=hostname, port=port
            )
        )
        certificateOptions = ssl.CertificateOptions(trustRoot=None)
        return NoCheckConnectionCreator(hostname, certificateOptions.getContext())


#: following treq doesn't check TLS, obviously it is unsecure and should not be used
#: without explicit warning
treq_client_no_ssl = HTTPClient(http_client.Agent(reactor, NoCheckContextFactory()))