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# Copyright (C) 2003-2009 Robey Pointer <robeypointer@gmail.com>
#
# 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.
"""
Some unit tests for SSHClient.
"""
import os
import socket
import threading
import time
import unittest
import weakref
from binascii import hexlify
from tests.util import test_path
import paramiko
class NullServer (paramiko.ServerInterface):
def get_allowed_auths(self, username):
if username == 'slowdive':
return 'publickey,password'
return 'publickey'
def check_auth_password(self, username, password):
if (username == 'slowdive') and (password == 'pygmalion'):
return paramiko.AUTH_SUCCESSFUL
return paramiko.AUTH_FAILED
def check_auth_publickey(self, username, key):
if (key.get_name() == 'ssh-dss') and (hexlify(key.get_fingerprint()) == '4478f0b9a23cc5182009ff755bc1d26c'):
return paramiko.AUTH_SUCCESSFUL
return paramiko.AUTH_FAILED
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 SSHClientTest (unittest.TestCase):
def setUp(self):
self.sockl = socket.socket()
self.sockl.bind(('localhost', 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)
host_key = paramiko.RSAKey.from_private_key_file(test_path('test_rsa.key'))
self.ts.add_server_key(host_key)
server = NullServer()
self.ts.start_server(self.event, server)
def test_1_client(self):
"""
verify that the SSHClient stuff works too.
"""
public_host_key = paramiko.RSAKey(data=str(host_key))
host_key = paramiko.RSAKey.from_private_key_file(test_path('test_rsa.key'))
self.tc = paramiko.SSHClient()
self.tc.get_host_keys().add('[%s]:%d' % (self.addr, self.port), 'ssh-rsa', public_host_key)
self.tc.connect(self.addr, self.port, username='slowdive', password='pygmalion')
self.event.wait(1.0)
self.assert_(self.event.isSet())
self.assert_(self.ts.is_active())
self.assertEquals('slowdive', 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()
def test_2_client_dsa(self):
"""
verify that SSHClient works with a DSA key.
"""
public_host_key = paramiko.RSAKey(data=str(host_key))
host_key = paramiko.RSAKey.from_private_key_file(test_path('test_rsa.key'))
self.tc = paramiko.SSHClient()
self.tc.get_host_keys().add('[%s]:%d' % (self.addr, self.port), 'ssh-rsa', public_host_key)
self.tc.connect(self.addr, self.port, username='slowdive', key_filename=test_path('test_dss.key'))
self.event.wait(1.0)
self.assert_(self.event.isSet())
self.assert_(self.ts.is_active())
self.assertEquals('slowdive', 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()
def test_3_multiple_key_files(self):
"""
verify that SSHClient accepts and tries multiple key files.
"""
public_host_key = paramiko.RSAKey(data=str(host_key))
host_key = paramiko.RSAKey.from_private_key_file(test_path('test_rsa.key'))
self.tc = paramiko.SSHClient()
self.tc.get_host_keys().add('[%s]:%d' % (self.addr, self.port), 'ssh-rsa', public_host_key)
self.tc.connect(self.addr, self.port, username='slowdive', key_filename=[ test_path('test_rsa.key'), test_path('test_dss.key') ])
self.event.wait(1.0)
self.assert_(self.event.isSet())
self.assert_(self.ts.is_active())
self.assertEquals('slowdive', self.ts.get_username())
self.assertEquals(True, self.ts.is_authenticated())
def test_4_auto_add_policy(self):
"""
verify that SSHClient's AutoAddPolicy works.
"""
public_host_key = paramiko.RSAKey(data=str(host_key))
host_key = paramiko.RSAKey.from_private_key_file(test_path('test_rsa.key'))
self.tc = paramiko.SSHClient()
self.tc.set_missing_host_key_policy(paramiko.AutoAddPolicy())
self.assertEquals(0, len(self.tc.get_host_keys()))
self.tc.connect(self.addr, self.port, username='slowdive', password='pygmalion')
self.event.wait(1.0)
self.assert_(self.event.isSet())
self.assert_(self.ts.is_active())
self.assertEquals('slowdive', self.ts.get_username())
self.assertEquals(True, self.ts.is_authenticated())
self.assertEquals(1, len(self.tc.get_host_keys()))
self.assertEquals(public_host_key, self.tc.get_host_keys()['[%s]:%d' % (self.addr, self.port)]['ssh-rsa'])
def test_5_cleanup(self):
"""
verify that when an SSHClient is collected, its transport (and the
transport's packetizer) is closed.
"""
public_host_key = paramiko.RSAKey(data=str(host_key))
host_key = paramiko.RSAKey.from_private_key_file(test_path('test_rsa.key'))
self.tc = paramiko.SSHClient()
self.tc.set_missing_host_key_policy(paramiko.AutoAddPolicy())
self.assertEquals(0, len(self.tc.get_host_keys()))
self.tc.connect(self.addr, self.port, username='slowdive', password='pygmalion')
self.event.wait(1.0)
self.assert_(self.event.isSet())
self.assert_(self.ts.is_active())
p = weakref.ref(self.tc._transport.packetizer)
self.assert_(p() is not None)
del self.tc
# hrm, sometimes p isn't cleared right away. why is that?
st = time.time()
while (time.time() - st < 5.0) and (p() is not None):
time.sleep(0.1)
self.assert_(p() is None)
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