Mercurial > libervia-backend
view sat/tools/web.py @ 3160:330a5f1d9eea
core (memory/crypto): replaced `PyCrypto` by `cryptography`:
`PyCrypto` is unmaintained for years but was used in SàT for password hashing. This patch
fixes that by replacing `PyCrypto` by the reference `cryptography` module which is well
maintained.
The behaviour stays the same (except that previously async `hash`, `encrypt` and `decrypt`
methods are now synchronous, as they are quick and using a deferToThread may actually be
more resource intensive than using blocking methods).
It is planed to improve `memory.crypto` by using more up-to-date cryptography/hashing
algorithms in the future.
PyCrypto is no more a dependency of SàT
author | Goffi <goffi@goffi.org> |
---|---|
date | Sun, 09 Feb 2020 23:50:26 +0100 |
parents | 9d0df638c8b4 |
children | 2c0628f3927e |
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#!/usr/bin/env python3 # SàT: an XMPP client # Copyright (C) 2009-2020 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(ssl.ClientContextFactory): """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_no_ssl = HTTPClient(http_client.Agent(reactor, NoCheckContextFactory))