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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Tests for L{twisted.conch.manhole_tap}.
"""
try:
import cryptography
except ImportError:
cryptography = None
try:
import pyasn1
except ImportError:
pyasn1 = None
if cryptography and pyasn1:
from twisted.conch import manhole_tap, manhole_ssh
from twisted.application.internet import StreamServerEndpointService
from twisted.application.service import MultiService
from twisted.cred import error
from twisted.cred.credentials import UsernamePassword
from twisted.conch import telnet
from twisted.python import usage
from twisted.trial.unittest import TestCase
class MakeServiceTests(TestCase):
"""
Tests for L{manhole_tap.makeService}.
"""
if not cryptography:
skip = "can't run without cryptography"
if not pyasn1:
skip = "Cannot run without PyASN1"
usernamePassword = (b'iamuser', b'thisispassword')
def setUp(self):
"""
Create a passwd-like file with a user.
"""
self.filename = self.mktemp()
with open(self.filename, 'wb') as f:
f.write(b':'.join(self.usernamePassword))
self.options = manhole_tap.Options()
def test_requiresPort(self):
"""
L{manhole_tap.makeService} requires either 'telnetPort' or 'sshPort' to
be given.
"""
with self.assertRaises(usage.UsageError) as e:
manhole_tap.Options().parseOptions([])
self.assertEqual(e.exception.args[0], ("At least one of --telnetPort "
"and --sshPort must be specified"))
def test_telnetPort(self):
"""
L{manhole_tap.makeService} will make a telnet service on the port
defined by C{--telnetPort}. It will not make a SSH service.
"""
self.options.parseOptions(["--telnetPort", "tcp:222"])
service = manhole_tap.makeService(self.options)
self.assertIsInstance(service, MultiService)
self.assertEqual(len(service.services), 1)
self.assertIsInstance(service.services[0], StreamServerEndpointService)
self.assertIsInstance(service.services[0].factory.protocol,
manhole_tap.makeTelnetProtocol)
self.assertEqual(service.services[0].endpoint._port, 222)
def test_sshPort(self):
"""
L{manhole_tap.makeService} will make a SSH service on the port
defined by C{--sshPort}. It will not make a telnet service.
"""
# Why the sshKeyDir and sshKeySize params? To prevent it stomping over
# (or using!) the user's private key, we just make a super small one
# which will never be used in a temp directory.
self.options.parseOptions(["--sshKeyDir", self.mktemp(),
"--sshKeySize", "512",
"--sshPort", "tcp:223"])
service = manhole_tap.makeService(self.options)
self.assertIsInstance(service, MultiService)
self.assertEqual(len(service.services), 1)
self.assertIsInstance(service.services[0], StreamServerEndpointService)
self.assertIsInstance(service.services[0].factory,
manhole_ssh.ConchFactory)
self.assertEqual(service.services[0].endpoint._port, 223)
def test_passwd(self):
"""
The C{--passwd} command-line option will load a passwd-like file.
"""
self.options.parseOptions(['--telnetPort', 'tcp:22',
'--passwd', self.filename])
service = manhole_tap.makeService(self.options)
portal = service.services[0].factory.protocol.portal
self.assertEqual(len(portal.checkers.keys()), 2)
# Ensure it's the passwd file we wanted by trying to authenticate
self.assertTrue(self.successResultOf(
portal.login(UsernamePassword(*self.usernamePassword),
None, telnet.ITelnetProtocol)))
self.assertIsInstance(self.failureResultOf(
portal.login(UsernamePassword(b"wrong", b"user"),
None, telnet.ITelnetProtocol)).value,
error.UnauthorizedLogin)