255 lines
9.3 KiB
Python
255 lines
9.3 KiB
Python
# Copyright (C) 2003-2009 Robey Pointer <robeypointer@gmail.com>
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#
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# This file is part of paramiko.
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#
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# Paramiko is free software; you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation; either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# Paramiko is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with Paramiko; if not, write to the Free Software Foundation, Inc.,
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# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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"""
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Some unit tests for SSHClient.
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"""
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import socket
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from tempfile import mkstemp
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import threading
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import unittest
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import weakref
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import warnings
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import os
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from tests.util import test_path
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import paramiko
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from paramiko.common import PY2
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class NullServer (paramiko.ServerInterface):
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def get_allowed_auths(self, username):
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if username == 'slowdive':
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return 'publickey,password'
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return 'publickey'
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def check_auth_password(self, username, password):
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if (username == 'slowdive') and (password == 'pygmalion'):
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return paramiko.AUTH_SUCCESSFUL
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return paramiko.AUTH_FAILED
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def check_auth_publickey(self, username, key):
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if (key.get_name() == 'ssh-dss') and key.get_fingerprint() == b'\x44\x78\xf0\xb9\xa2\x3c\xc5\x18\x20\x09\xff\x75\x5b\xc1\xd2\x6c':
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return paramiko.AUTH_SUCCESSFUL
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return paramiko.AUTH_FAILED
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def check_channel_request(self, kind, chanid):
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return paramiko.OPEN_SUCCEEDED
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def check_channel_exec_request(self, channel, command):
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if command != 'yes':
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return False
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return True
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class SSHClientTest (unittest.TestCase):
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def setUp(self):
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self.sockl = socket.socket()
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self.sockl.bind(('localhost', 0))
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self.sockl.listen(1)
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self.addr, self.port = self.sockl.getsockname()
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self.event = threading.Event()
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def tearDown(self):
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for attr in "tc ts socks sockl".split():
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if hasattr(self, attr):
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getattr(self, attr).close()
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def _run(self):
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self.socks, addr = self.sockl.accept()
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self.ts = paramiko.Transport(self.socks)
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host_key = paramiko.RSAKey.from_private_key_file(test_path('test_rsa.key'))
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self.ts.add_server_key(host_key)
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server = NullServer()
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self.ts.start_server(self.event, server)
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def test_1_client(self):
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"""
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verify that the SSHClient stuff works too.
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"""
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threading.Thread(target=self._run).start()
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host_key = paramiko.RSAKey.from_private_key_file(test_path('test_rsa.key'))
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public_host_key = paramiko.RSAKey(data=host_key.asbytes())
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self.tc = paramiko.SSHClient()
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self.tc.get_host_keys().add('[%s]:%d' % (self.addr, self.port), 'ssh-rsa', public_host_key)
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self.tc.connect(self.addr, self.port, username='slowdive', password='pygmalion')
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self.event.wait(1.0)
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self.assertTrue(self.event.isSet())
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self.assertTrue(self.ts.is_active())
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self.assertEqual('slowdive', self.ts.get_username())
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self.assertEqual(True, self.ts.is_authenticated())
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stdin, stdout, stderr = self.tc.exec_command('yes')
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schan = self.ts.accept(1.0)
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schan.send('Hello there.\n')
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schan.send_stderr('This is on stderr.\n')
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schan.close()
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self.assertEqual('Hello there.\n', stdout.readline())
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self.assertEqual('', stdout.readline())
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self.assertEqual('This is on stderr.\n', stderr.readline())
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self.assertEqual('', stderr.readline())
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stdin.close()
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stdout.close()
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stderr.close()
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def test_2_client_dsa(self):
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"""
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verify that SSHClient works with a DSA key.
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"""
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threading.Thread(target=self._run).start()
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host_key = paramiko.RSAKey.from_private_key_file(test_path('test_rsa.key'))
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public_host_key = paramiko.RSAKey(data=host_key.asbytes())
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self.tc = paramiko.SSHClient()
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self.tc.get_host_keys().add('[%s]:%d' % (self.addr, self.port), 'ssh-rsa', public_host_key)
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self.tc.connect(self.addr, self.port, username='slowdive', key_filename=test_path('test_dss.key'))
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self.event.wait(1.0)
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self.assertTrue(self.event.isSet())
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self.assertTrue(self.ts.is_active())
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self.assertEqual('slowdive', self.ts.get_username())
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self.assertEqual(True, self.ts.is_authenticated())
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stdin, stdout, stderr = self.tc.exec_command('yes')
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schan = self.ts.accept(1.0)
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schan.send('Hello there.\n')
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schan.send_stderr('This is on stderr.\n')
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schan.close()
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self.assertEqual('Hello there.\n', stdout.readline())
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self.assertEqual('', stdout.readline())
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self.assertEqual('This is on stderr.\n', stderr.readline())
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self.assertEqual('', stderr.readline())
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stdin.close()
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stdout.close()
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stderr.close()
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def test_3_multiple_key_files(self):
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"""
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verify that SSHClient accepts and tries multiple key files.
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"""
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threading.Thread(target=self._run).start()
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host_key = paramiko.RSAKey.from_private_key_file(test_path('test_rsa.key'))
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public_host_key = paramiko.RSAKey(data=host_key.asbytes())
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self.tc = paramiko.SSHClient()
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self.tc.get_host_keys().add('[%s]:%d' % (self.addr, self.port), 'ssh-rsa', public_host_key)
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self.tc.connect(self.addr, self.port, username='slowdive', key_filename=[ test_path('test_rsa.key'), test_path('test_dss.key') ])
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self.event.wait(1.0)
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self.assertTrue(self.event.isSet())
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self.assertTrue(self.ts.is_active())
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self.assertEqual('slowdive', self.ts.get_username())
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self.assertEqual(True, self.ts.is_authenticated())
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def test_4_auto_add_policy(self):
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"""
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verify that SSHClient's AutoAddPolicy works.
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"""
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threading.Thread(target=self._run).start()
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host_key = paramiko.RSAKey.from_private_key_file(test_path('test_rsa.key'))
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public_host_key = paramiko.RSAKey(data=host_key.asbytes())
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self.tc = paramiko.SSHClient()
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self.tc.set_missing_host_key_policy(paramiko.AutoAddPolicy())
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self.assertEqual(0, len(self.tc.get_host_keys()))
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self.tc.connect(self.addr, self.port, username='slowdive', password='pygmalion')
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self.event.wait(1.0)
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self.assertTrue(self.event.isSet())
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self.assertTrue(self.ts.is_active())
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self.assertEqual('slowdive', self.ts.get_username())
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self.assertEqual(True, self.ts.is_authenticated())
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self.assertEqual(1, len(self.tc.get_host_keys()))
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self.assertEqual(public_host_key, self.tc.get_host_keys()['[%s]:%d' % (self.addr, self.port)]['ssh-rsa'])
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def test_5_save_host_keys(self):
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"""
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verify that SSHClient correctly saves a known_hosts file.
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"""
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warnings.filterwarnings('ignore', 'tempnam.*')
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host_key = paramiko.RSAKey.from_private_key_file(test_path('test_rsa.key'))
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public_host_key = paramiko.RSAKey(data=host_key.asbytes())
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fd, localname = mkstemp()
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os.close(fd)
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client = paramiko.SSHClient()
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self.assertEquals(0, len(client.get_host_keys()))
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host_id = '[%s]:%d' % (self.addr, self.port)
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client.get_host_keys().add(host_id, 'ssh-rsa', public_host_key)
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self.assertEquals(1, len(client.get_host_keys()))
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self.assertEquals(public_host_key, client.get_host_keys()[host_id]['ssh-rsa'])
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client.save_host_keys(localname)
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with open(localname) as fd:
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assert host_id in fd.read()
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os.unlink(localname)
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def test_6_cleanup(self):
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"""
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verify that when an SSHClient is collected, its transport (and the
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transport's packetizer) is closed.
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"""
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# Unclear why this is borked on Py3, but it is, and does not seem worth
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# pursuing at the moment.
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if not PY2:
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return
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threading.Thread(target=self._run).start()
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host_key = paramiko.RSAKey.from_private_key_file(test_path('test_rsa.key'))
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public_host_key = paramiko.RSAKey(data=host_key.asbytes())
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self.tc = paramiko.SSHClient()
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self.tc.set_missing_host_key_policy(paramiko.AutoAddPolicy())
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self.assertEqual(0, len(self.tc.get_host_keys()))
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self.tc.connect(self.addr, self.port, username='slowdive', password='pygmalion')
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self.event.wait(1.0)
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self.assertTrue(self.event.isSet())
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self.assertTrue(self.ts.is_active())
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p = weakref.ref(self.tc._transport.packetizer)
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self.assertTrue(p() is not None)
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self.tc.close()
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del self.tc
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# hrm, sometimes p isn't cleared right away. why is that?
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#st = time.time()
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#while (time.time() - st < 5.0) and (p() is not None):
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# time.sleep(0.1)
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# instead of dumbly waiting for the GC to collect, force a collection
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# to see whether the SSHClient object is deallocated correctly
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import gc
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gc.collect()
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self.assertTrue(p() is None)
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