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annotate sat/tools/web.py @ 3582:71516731d0aa

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core (memory/sqla): database migration using Alembic: Alembic database migration tool, which is the recommended one for SQLAlchemy has been integrated. When a database is created, it will be used to stamp to current (head) revision, otherwise, DB will be checked to see if it needs to be updated, and upgrade will be triggered if necessary.
author Goffi <goffi@goffi.org>
date Fri, 25 Jun 2021 17:55:23 +0200
parents 7550ae9cfbac
children 65bac82e4049
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1 #!/usr/bin/env python3
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2
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3 # Libervia: an XMPP client
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4 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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5
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6 # This program is free software: you can redistribute it and/or modify
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7 # it under the terms of the GNU Affero General Public License as published by
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8 # the Free Software Foundation, either version 3 of the License, or
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9 # (at your option) any later version.
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10
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU Affero General Public License for more details.
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15
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16 # You should have received a copy of the GNU Affero General Public License
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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18
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19 from OpenSSL import SSL
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20 from zope.interface import implementer
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21 from treq.client import HTTPClient
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22 from twisted.internet.interfaces import IOpenSSLClientConnectionCreator
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23 from twisted.internet import reactor, ssl
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24 from twisted.web import iweb
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25 from twisted.web import client as http_client
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26 from sat.core.log import getLogger
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27
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28
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29 log = getLogger(__name__)
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31
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32 SSLError = SSL.Error
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33
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34
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35 @implementer(IOpenSSLClientConnectionCreator)
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36 class NoCheckConnectionCreator(object):
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37 def __init__(self, hostname, ctx):
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38 self._ctx = ctx
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39
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40 def clientConnectionForTLS(self, tlsProtocol):
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41 context = self._ctx
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42 connection = SSL.Connection(context, None)
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43 connection.set_app_data(tlsProtocol)
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44 return connection
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47 @implementer(iweb.IPolicyForHTTPS)
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48 class NoCheckContextFactory:
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49 """Context factory which doesn't do TLS certificate check
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50
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51 /!\\ it's obvisously a security flaw to use this class,
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52 and it should be used only with explicit agreement from the end used
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53 """
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54
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55 def creatorForNetloc(self, hostname, port):
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56 log.warning(
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57 "TLS check disabled for {host} on port {port}".format(
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58 host=hostname, port=port
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59 )
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60 )
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61 certificateOptions = ssl.CertificateOptions(trustRoot=None)
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62 return NoCheckConnectionCreator(hostname, certificateOptions.getContext())
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63
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65 #: following treq doesn't check TLS, obviously it is unsecure and should not be used
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66 #: without explicit warning
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67 treq_client_no_ssl = HTTPClient(http_client.Agent(reactor, NoCheckContextFactory()))