libervia-backend/sat/plugins/plugin_dbg_manhole.py
Goffi e47a9b2027 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.
2019-01-04 18:59:24 +01:00

65 lines
2.4 KiB
Python

#!/usr/bin/env python2
# -*- coding: utf-8 -*-
# SAT plugin for debugging, using a manhole
# Copyright (C) 2009-2019 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 sat.core.i18n import _
from sat.core.constants import Const as C
from sat.core.log import getLogger
from twisted.conch.insults import insults
from twisted.conch.telnet import TelnetTransport, TelnetBootstrapProtocol
from twisted.internet import reactor, protocol
from twisted.conch.manhole import ColoredManhole
log = getLogger(__name__)
PLUGIN_INFO = {
C.PI_NAME: u"Manhole debug plugin",
C.PI_IMPORT_NAME: u"manhole",
C.PI_TYPE: u"DEBUG",
C.PI_PROTOCOLS: [],
C.PI_DEPENDENCIES: [],
C.PI_MAIN: u"Manhole",
C.PI_HANDLER: u"no",
C.PI_DESCRIPTION: _(u"""Debug plugin to have a telnet server"""),
}
class Manhole(object):
def __init__(self, host):
self.host = host
port = int(host.memory.getConfig(None, "manhole_debug_dangerous_port_int"))
if port:
self.startManhole(port)
def startManhole(self, port):
log.warning(_(u"/!\\ Manhole debug server activated, be sure to not use it in "
u"production, this is dangerous /!\\"))
log.info(_(u"You can connect to manhole server using telnet on port {port}")
.format(port=port))
f = protocol.ServerFactory()
namespace = {
u"host": self.host,
}
f.protocol = lambda: TelnetTransport(TelnetBootstrapProtocol,
insults.ServerProtocol,
ColoredManhole,
namespace=namespace,
)
reactor.listenTCP(port, f)