MatrixSynapse/synapse/util/manhole.py

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# Copyright 2016 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from twisted.conch.manhole import ColoredManhole
from twisted.conch.insults import insults
from twisted.conch import manhole_ssh
from twisted.cred import checkers, portal
from twisted.conch.ssh.keys import Key
PUBLIC_KEY = (
"ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAGEArzJx8OYOnJmzf4tfBEvLi8DVPrJ3/c9k2I/Az"
"64fxjHf9imyRJbixtQhlH9lfNjUIx+4LmrJH5QNRsFporcHDKOTwTTYLh5KmRpslkYHRivcJS"
"kbh/C+BR3utDS555mV"
)
PRIVATE_KEY = """-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----"""
def manhole(username, password, globals):
"""Starts a ssh listener with password authentication using
the given username and password. Clients connecting to the ssh
listener will find themselves in a colored python shell with
the supplied globals.
Args:
username(str): The username ssh clients should auth with.
password(str): The password ssh clients should auth with.
globals(dict): The variables to expose in the shell.
Returns:
twisted.internet.protocol.Factory: A factory to pass to ``listenTCP``
"""
checker = checkers.InMemoryUsernamePasswordDatabaseDontUse(
**{username: password}
)
rlm = manhole_ssh.TerminalRealm()
rlm.chainedProtocolFactory = lambda: insults.ServerProtocol(
ColoredManhole,
dict(globals, __name__="__console__")
)
factory = manhole_ssh.ConchFactory(portal.Portal(rlm, [checker]))
factory.publicKeys['ssh-rsa'] = Key.fromString(PUBLIC_KEY)
factory.privateKeys['ssh-rsa'] = Key.fromString(PRIVATE_KEY)
return factory