def test_connect_unknown_host(self):
ssh_connection = SSHConnection(hostname="0.0.0.1",
known_hosts_file=self.known_hosts_file)
with self.assertRaises(
GvmError,
msg=("Could'nt establish a connection to fetch the remote "
"server key: [Errno 65] No route to host"),
):
ssh_connection.connect()
def test_connect_denied_known_hosts_file(self):
if os.path.exists(self.known_hosts_file):
os.chmod(self.known_hosts_file, 0000)
ssh_connection = SSHConnection(hostname="0.0.0.1",
known_hosts_file=self.known_hosts_file)
with self.assertRaises(
GvmError,
msg=("Could'nt establish a connection to fetch the remote "
"server key: [Errno 65] No route to host"),
):
ssh_connection.connect()
def test_connect(self):
with patch("paramiko.SSHClient") as SSHClientMock:
client_mock = SSHClientMock.return_value
client_mock.exec_command.return_value = ["a", "b", "c"]
ssh_connection = SSHConnection(
known_hosts_file=self.known_hosts_file)
ssh_connection.connect()
self.assertEqual(ssh_connection._stdin, "a")
self.assertEqual(ssh_connection._stdout, "b")
self.assertEqual(ssh_connection._stderr, "c")
ssh_connection.disconnect()
def test_read(self):
with patch("paramiko.SSHClient") as SSHClientMock:
client_mock = SSHClientMock.return_value
stdout = Mock()
stdout.channel.recv.return_value = b"foo bar baz"
client_mock.exec_command.return_value = [None, stdout, None]
ssh_connection = SSHConnection(
known_hosts_file=self.known_hosts_file)
ssh_connection.connect()
recved = ssh_connection._read()
self.assertEqual(recved, b"foo bar baz")
ssh_connection.disconnect()
def test_send(self):
with patch("paramiko.SSHClient") as SSHClientMock:
client_mock = SSHClientMock.return_value
stdin = Mock()
stdin.channel.send.return_value = 4
client_mock.exec_command.return_value = [stdin, None, None]
ssh_connection = SSHConnection(
known_hosts_file=self.known_hosts_file)
ssh_connection.connect()
req = ssh_connection.send("blah")
self.assertEqual(req, 4)
ssh_connection.disconnect()
def test_send_error(self):
with patch("paramiko.SSHClient") as SSHClientMock:
client_mock = SSHClientMock.return_value
stdin = Mock()
stdin.channel.send.return_value = None
client_mock.exec_command.return_value = [stdin, None, None]
ssh_connection = SSHConnection(
known_hosts_file=self.known_hosts_file)
ssh_connection.connect()
with self.assertRaises(GvmError,
msg="Remote closed the connection"):
ssh_connection.send("blah")
ssh_connection.disconnect()
def test_disconnect_os_error(self):
with patch("paramiko.SSHClient") as SSHClientMock:
client_mock = SSHClientMock.return_value
client_mock.exec_command.return_value = ["a", "b", "c"]
client_mock.close.side_effect = OSError
ssh_connection = SSHConnection(
known_hosts_file=self.known_hosts_file)
ssh_connection.connect()
with self.assertRaises(OSError):
with self.assertLogs("gvm.connections", level="INFO") as cm:
ssh_connection.disconnect()
self.assertEqual(cm.output, ["Connection closing error: "])
def test_send_and_slice(self):
with patch("paramiko.SSHClient") as SSHClientMock:
client_mock = SSHClientMock.return_value
stdin = Mock()
stdin.channel.send.side_effect = [2, 2]
client_mock.exec_command.return_value = [stdin, None, None]
ssh_connection = SSHConnection(
known_hosts_file=self.known_hosts_file)
ssh_connection.connect()
req = ssh_connection.send("blah")
self.assertEqual(req, 4)
stdin.channel.send.assert_called()
with self.assertRaises(AssertionError):
stdin.channel.send.assert_called_once()
ssh_connection.disconnect()
def test_disconnect(self):
with patch("paramiko.SSHClient") as SSHClientMock:
client_mock = SSHClientMock.return_value
client_mock.exec_command.return_value = ["a", "b", "c"]
ssh_connection = SSHConnection(
known_hosts_file=self.known_hosts_file)
ssh_connection.connect()
self.assertEqual(ssh_connection._stdin, "a")
self.assertEqual(ssh_connection._stdout, "b")
self.assertEqual(ssh_connection._stderr, "c")
ssh_connection.disconnect()
# make sure the attributes have been deleted
with self.assertRaises(AttributeError):
type(ssh_connection._stdin)
with self.assertRaises(AttributeError):
type(ssh_connection._stdout)
with self.assertRaises(AttributeError):
type(ssh_connection._stderr)
with self.assertRaises(AttributeError):
type(ssh_connection._socket)
with self.assertRaises(AttributeError):
with self.assertLogs("gvm.connections", level="INFO") as cm:
# disconnect twice should not work ...
ssh_connection.disconnect()
self.assertEqual(
cm.output,
[
"Connection might already be"
" closed. No socket found.",
],
)
ssh_connection._socket = None
ssh_connection.disconnect()
def test_connect_error(self):
print(self.known_hosts_file.read_text(encoding="utf-8"))
ssh_connection = SSHConnection(known_hosts_file=self.known_hosts_file)
with self.assertRaises(GvmError, msg="SSH Connection failed"):
ssh_connection.connect()