mirror of
https://github.com/dkmstr/openuds.git
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141 lines
6.5 KiB
Python
141 lines
6.5 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright (c) 2022 Virtual Cable S.L.U.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without modification,
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# are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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# * Neither the name of Virtual Cable S.L. nor the names of its contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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'''
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Author: Adolfo Gómez, dkmaster at dkmon dot com
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'''
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import random
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import socket
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import logging
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import multiprocessing
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from unittest import IsolatedAsyncioTestCase, mock
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from udstunnel import process_connection
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from uds_tunnel import consts
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from .utils import tuntools
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logger = logging.getLogger(__name__)
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class TestTunnel(IsolatedAsyncioTestCase):
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async def asyncSetUp(self) -> None:
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# Disable logging os slow tests
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logging.disable(logging.WARNING)
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return await super().asyncSetUp()
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async def test_tunnel_invalid_command(self) -> None:
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# Test invalid handshake
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# data = b''
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# future: asyncio.Future = asyncio.Future()
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# def callback(ldata: bytes) -> None:
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# nonlocal data
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# data += ldata
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# future.set_result(True)
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# Send invalid commands and see what happens
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# Commands are 4 bytes length, try with less and more invalid commands
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for i in range(0, 100, 10):
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# Set timeout to 1 seconds
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bad_cmd = bytes(random.randint(0, 255) for _ in range(i)) # nosec: Some garbage, not security related
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logger.info('Testing invalid command with %s', bad_cmd)
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async with tuntools.create_test_tunnel(callback=lambda x: None, port=7770, remote_port=54555, command_timeout=0.1) as cfg:
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logger_mock = mock.MagicMock()
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with mock.patch('uds_tunnel.tunnel.logger', logger_mock):
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# Open connection to tunnel
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async with tuntools.open_tunnel_client(cfg) as (reader, writer):
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# Send data
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writer.write(bad_cmd)
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await writer.drain()
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# Wait for response
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readed = await reader.read(1024)
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# Logger should have been called once with error
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logger_mock.error.assert_called()
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if len(bad_cmd) < 4:
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# Response shout have been timeout
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self.assertEqual(readed, consts.RESPONSE_ERROR_TIMEOUT)
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# And logger should have been called with timeout
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self.assertIn('TIMEOUT', logger_mock.error.call_args[0][0])
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else:
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# Response shout have been command error
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self.assertEqual(readed, consts.RESPONSE_ERROR_COMMAND)
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# And logger should have been called with command error
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self.assertIn('ERROR', logger_mock.error.call_args[0][0])
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# Info should have been called with connection info and
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self.assertIn(
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'CONNECT FROM', logger_mock.info.call_args_list[0][0][0]
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) # First call to info
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def test_tunnel_invalid_handshake(self) -> None:
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# Not async test, executed on main thread without event loop
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# Pipe for testing
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own_conn, other_conn = multiprocessing.Pipe() # pylint: disable=unused-variable
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# Some random data to send on each test, all invalid
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# 0 bytes will make timeout to be reached
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for i in list(range(10)) + list(range(100, 10000, 100)):
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# Create a simple socket for testing
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rsock, wsock = socket.socketpair()
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# Set read timeout to 1 seconds
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rsock.settimeout(3)
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# Set timeout to 1 seconds
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bad_handshake = bytes(random.randint(0, 255) for _ in range(i)) # nosec not for security
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logger_mock = mock.MagicMock()
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with mock.patch('udstunnel.logger', logger_mock):
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wsock.sendall(bad_handshake)
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process_connection(rsock, ('host', 'port'), own_conn)
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# Check that logger has been called
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logger_mock.error.assert_called_once()
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# And ensure that error contains 'HANDSHAKE invalid'
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self.assertIn('HANDSHAKE invalid', logger_mock.error.call_args[0][0])
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def test_valid_handshake(self) -> None:
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# Not async test
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# Pipe for testing
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own_conn, other_conn = multiprocessing.Pipe()
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# Create a simple socket for testing
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rsock, wsock = socket.socketpair()
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# Set read timeout to 1 seconds
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rsock.settimeout(3)
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# Patch logger to check that it's not called
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logger_mock = mock.MagicMock()
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with mock.patch('udstunnel.logger', logger_mock):
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wsock.sendall(consts.HANDSHAKE_V1)
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process_connection(rsock, ('host', 'port'), own_conn)
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# Check that logger has not been called
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logger_mock.error.assert_not_called()
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# and that other_conn has received a ('host', 'port') tuple
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# recv()[0] will be a copy of the socket, we don't care about it
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self.assertEqual(other_conn.recv()[1], ('host', 'port'))
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