1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
# Copyright (C) 2003-2007 Robey Pointer <robeypointer@gmail.com>
# Copyright (C) 2013-2014 science + computing ag
# Author: Sebastian Deiss <sebastian.deiss@t-online.de>
#
#
# This file is part of paramiko.
#
# Paramiko is free software; you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation; either version 2.1 of the License, or (at your option)
# any later version.
#
# Paramiko 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 Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with Paramiko; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
"""
Unit Tests for the GSS-API / SSPI SSHv2 Diffie-Hellman Key Exchange and user
authentication
"""
import socket
import threading
import unittest
import paramiko
class NullServer (paramiko.ServerInterface):
def get_allowed_auths(self, username):
return 'gssapi-keyex'
def check_auth_gssapi_keyex(self, username,
gss_authenticated=paramiko.AUTH_FAILED,
cc_file=None):
if gss_authenticated == paramiko.AUTH_SUCCESSFUL:
return paramiko.AUTH_SUCCESSFUL
return paramiko.AUTH_FAILED
def enable_auth_gssapi(self):
UseGSSAPI = True
return UseGSSAPI
def check_channel_request(self, kind, chanid):
return paramiko.OPEN_SUCCEEDED
def check_channel_exec_request(self, channel, command):
if command != 'yes':
return False
return True
class GSSKexTest(unittest.TestCase):
def init(username, hostname):
global krb5_principal, targ_name
krb5_principal = username
targ_name = hostname
init = staticmethod(init)
def setUp(self):
self.username = krb5_principal
self.hostname = socket.getfqdn(targ_name)
self.sockl = socket.socket()
self.sockl.bind((targ_name, 0))
self.sockl.listen(1)
self.addr, self.port = self.sockl.getsockname()
self.event = threading.Event()
thread = threading.Thread(target=self._run)
thread.start()
def tearDown(self):
for attr in "tc ts socks sockl".split():
if hasattr(self, attr):
getattr(self, attr).close()
def _run(self):
self.socks, addr = self.sockl.accept()
self.ts = paramiko.Transport(self.socks, gss_kex=True)
host_key = paramiko.RSAKey.from_private_key_file('tests/test_rsa.key')
self.ts.add_server_key(host_key)
self.ts.set_gss_host(targ_name)
try:
self.ts.load_server_moduli()
except:
print ('(Failed to load moduli -- gex will be unsupported.)')
server = NullServer()
self.ts.start_server(self.event, server)
def test_1_gsskex_and_auth(self):
"""
Verify that Paramiko can handle SSHv2 GSS-API / SSPI authenticated
Diffie-Hellman Key Exchange and user authentication with the GSS-API
context created during key exchange.
"""
host_key = paramiko.RSAKey.from_private_key_file('tests/test_rsa.key')
public_host_key = paramiko.RSAKey(data=host_key.asbytes())
self.tc = paramiko.SSHClient()
self.tc.get_host_keys().add('[%s]:%d' % (self.hostname, self.port),
'ssh-rsa', public_host_key)
self.tc.connect(self.hostname, self.port, username=self.username,
gss_auth=True, gss_kex=True)
self.event.wait(1.0)
self.assert_(self.event.isSet())
self.assert_(self.ts.is_active())
self.assertEquals(self.username, self.ts.get_username())
self.assertEquals(True, self.ts.is_authenticated())
stdin, stdout, stderr = self.tc.exec_command('yes')
schan = self.ts.accept(1.0)
schan.send('Hello there.\n')
schan.send_stderr('This is on stderr.\n')
schan.close()
self.assertEquals('Hello there.\n', stdout.readline())
self.assertEquals('', stdout.readline())
self.assertEquals('This is on stderr.\n', stderr.readline())
self.assertEquals('', stderr.readline())
stdin.close()
stdout.close()
stderr.close()
|
