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annotate sat/plugins/plugin_dbg_manhole.py @ 2755:12d1ca646af1

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plugin manhole: manhole debug plugin, first draft: this plugin open a telnet server which open a Python interpreter and allows to inspect the backend while it is running. To enable it, the settings "manhole_debug_dangerous_port_int" must be set to the desired TCP port in [DEFAULT] section of sat.conf. A warning will be logged if the server is enabled. Currently only a telnet server is available, and no login is required. This may change in the futur to enable login/password and ssh access, or even an XMPP access. This is a debugging feature and must only be used during development. Once in the Python interpreter, the "host" variable is accessible.
author Goffi <goffi@goffi.org>
date Fri, 04 Jan 2019 18:59:24 +0100
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children e2005dd39c92
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT plugin for debugging, using a manhole
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5 # Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from sat.core.i18n import _
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21 from sat.core.constants import Const as C
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22 from sat.core.log import getLogger
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23 from twisted.conch.insults import insults
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24 from twisted.conch.telnet import TelnetTransport, TelnetBootstrapProtocol
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25 from twisted.internet import reactor, protocol
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26 from twisted.conch.manhole import ColoredManhole
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27
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28 log = getLogger(__name__)
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29
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30 PLUGIN_INFO = {
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31 C.PI_NAME: u"Manhole debug plugin",
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32 C.PI_IMPORT_NAME: u"manhole",
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33 C.PI_TYPE: u"DEBUG",
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34 C.PI_PROTOCOLS: [],
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35 C.PI_DEPENDENCIES: [],
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36 C.PI_MAIN: u"Manhole",
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37 C.PI_HANDLER: u"no",
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38 C.PI_DESCRIPTION: _(u"""Debug plugin to have a telnet server"""),
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39 }
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40
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41
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42
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43 class Manhole(object):
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44
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45 def __init__(self, host):
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46 self.host = host
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47 port = int(host.memory.getConfig(None, "manhole_debug_dangerous_port_int"))
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48 if port:
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49 self.startManhole(port)
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50
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51 def startManhole(self, port):
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52 log.warning(_(u"/!\\ Manhole debug server activated, be sure to not use it in "
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53 u"production, this is dangerous /!\\"))
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54 log.info(_(u"You can connect to manhole server using telnet on port {port}")
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55 .format(port=port))
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56 f = protocol.ServerFactory()
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57 namespace = {
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58 u"host": self.host,
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59 }
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60 f.protocol = lambda: TelnetTransport(TelnetBootstrapProtocol,
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61 insults.ServerProtocol,
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62 ColoredManhole,
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63 namespace=namespace,
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64 )
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65 reactor.listenTCP(port, f)