FreedomBox/plinth/tests/test_daemon.py
Sunil Mohan Adapa 465e452daf
diagnostics: Refactor check IDs, tests and background checks
- Ensure that each diagnostic test category can be identified by easy prefix
matching on the test ID.

- Give a different unique IDs each different kind of test. More specific tests
of a type get a different kind of ID.

- Make comparison of diagnostic test results in test cases more comprehensive.

- Simplify code that shows the number if issues identified.

- In many languages, there is complex logic to write plural forms. Plurals
can't be handled by assuming singular = 1 item and plural is > 1. Translation of
messages in Notification does not support plurals properly. Avoid this for now
by using sometimes incorrect plural form.

- For i18n we should avoid joining phrases/words. Words don't always maintain
order after translation.

- Notify about the total number of issues in diagnostics and not just the most
severe category. This is likely to draw more attention and avoid i18n
complexity.

- Dismiss the diagnostic notification if the latest run succeeded completely.

Tests:

- Unit tests pass.

- Diagnostics for following apps works: networks (drop-in config),
apache (daemon, listen address, internal firewall, external firewall),
tor (netcat), torproxy (internal only firewall, torproxy url, torproxy using
tor), privoxy (privoxy url, package available, package latest),

- Untested: Is release file available method in upgrades app.

Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: James Valleroy <jvalleroy@mailbox.org>
2023-10-07 04:52:22 +09:00

314 lines
12 KiB
Python

# SPDX-License-Identifier: AGPL-3.0-or-later
"""
Test module for component managing system daemons and other systemd units.
"""
import socket
import subprocess
from unittest.mock import Mock, call, patch
import pytest
from plinth.app import App, FollowerComponent, Info
from plinth.daemon import (Daemon, RelatedDaemon, app_is_running,
diagnose_netcat, diagnose_port_listening)
from plinth.modules.diagnostics.check import DiagnosticCheck, Result
privileged_modules_to_mock = ['plinth.privileged.service']
class AppTest(App):
"""Test application that contains a daemon."""
app_id = 'test-app'
@pytest.fixture(name='daemon')
def fixture_daemon():
"""Create a test daemon object."""
return Daemon('test-daemon', 'test-unit')
@pytest.fixture(name='app_list')
def fixture_app_list(daemon):
"""A list of apps on which tests are to be run."""
app1 = AppTest()
app1.add(Info('test-app', 1))
app1.add(daemon)
with patch('plinth.app.App.list') as app_list:
app_list.return_value = [app1]
yield app_list
def test_initialization():
"""Test that component is initialized properly."""
with pytest.raises(ValueError):
Daemon(None, None)
daemon = Daemon('test-daemon', 'test-unit')
assert daemon.component_id == 'test-daemon'
assert daemon.unit == 'test-unit'
assert not daemon.strict_check
assert daemon.listen_ports == []
assert daemon.alias is None
listen_ports = [(345, 'tcp4'), (123, 'udp')]
daemon = Daemon('test-daemon', 'test-unit', strict_check=True,
listen_ports=listen_ports, alias='test-unit-2')
assert daemon.strict_check
assert daemon.listen_ports == listen_ports
assert daemon.alias == 'test-unit-2'
@patch('plinth.action_utils.service_is_enabled')
def test_is_enabled(service_is_enabled, daemon):
"""Test that daemon enabled check works."""
service_is_enabled.return_value = True
assert daemon.is_enabled()
service_is_enabled.assert_has_calls(
[call('test-unit', strict_check=False)])
service_is_enabled.return_value = False
assert not daemon.is_enabled()
service_is_enabled.reset_mock()
daemon.strict_check = True
daemon.is_enabled()
service_is_enabled.assert_has_calls([call('test-unit', strict_check=True)])
@patch('subprocess.run')
@patch('subprocess.call')
def test_enable(subprocess_call, subprocess_run, app_list, mock_privileged,
daemon):
"""Test that enabling the daemon works."""
daemon.enable()
subprocess_call.assert_has_calls(
[call(['systemctl', 'enable', 'test-unit'])])
subprocess_run.assert_any_call(['systemctl', 'start', 'test-unit'],
stdout=subprocess.DEVNULL, check=False)
subprocess_call.reset_mock()
daemon.alias = 'test-unit-2'
daemon.enable()
subprocess_call.assert_has_calls([
call(['systemctl', 'enable', 'test-unit']),
call(['systemctl', 'enable', 'test-unit-2'])
])
subprocess_run.assert_any_call(['systemctl', 'start', 'test-unit'],
stdout=subprocess.DEVNULL, check=False)
subprocess_run.assert_any_call(['systemctl', 'start', 'test-unit-2'],
stdout=subprocess.DEVNULL, check=False)
@patch('subprocess.run')
@patch('subprocess.call')
def test_disable(subprocess_call, subprocess_run, mock_privileged, daemon):
"""Test that disabling the daemon works."""
daemon.disable()
subprocess_call.assert_has_calls(
[call(['systemctl', 'disable', 'test-unit'])])
subprocess_run.assert_any_call(['systemctl', 'stop', 'test-unit'],
stdout=subprocess.DEVNULL, check=False)
subprocess_call.reset_mock()
daemon.alias = 'test-unit-2'
daemon.disable()
subprocess_call.assert_has_calls([
call(['systemctl', 'disable', 'test-unit']),
call(['systemctl', 'disable', 'test-unit-2'])
])
subprocess_run.assert_any_call(['systemctl', 'stop', 'test-unit'],
stdout=subprocess.DEVNULL, check=False)
subprocess_run.assert_any_call(['systemctl', 'stop', 'test-unit-2'],
stdout=subprocess.DEVNULL, check=False)
@patch('plinth.action_utils.service_is_running')
def test_is_running(service_is_running, daemon):
"""Test that checking that the daemon is running works."""
service_is_running.return_value = True
assert daemon.is_running()
service_is_running.assert_has_calls([call('test-unit')])
service_is_running.return_value = False
assert not daemon.is_running()
@patch('plinth.action_utils.service_is_running')
@patch('plinth.daemon.diagnose_port_listening')
def test_diagnose(port_listening, service_is_running, daemon):
"""Test running diagnostics."""
def side_effect(port, kind):
name = f'test-result-{port}-{kind}'
return DiagnosticCheck(name, name, Result.PASSED)
daemon = Daemon('test-daemon', 'test-unit', listen_ports=[(8273, 'tcp4'),
(345, 'udp')])
port_listening.side_effect = side_effect
service_is_running.return_value = True
results = daemon.diagnose()
assert results == [
DiagnosticCheck('daemon-running-test-unit',
'Service test-unit is running', Result.PASSED),
DiagnosticCheck('test-result-8273-tcp4', 'test-result-8273-tcp4',
Result.PASSED),
DiagnosticCheck('test-result-345-udp', 'test-result-345-udp',
Result.PASSED)
]
port_listening.assert_has_calls([call(8273, 'tcp4'), call(345, 'udp')])
service_is_running.assert_has_calls([call('test-unit')])
service_is_running.return_value = False
results = daemon.diagnose()
assert results[0].result == Result.FAILED
@patch('plinth.action_utils.service_is_running')
def test_app_is_running(service_is_running):
"""Test that checking whether app is running works."""
daemon1 = Daemon('test-daemon-1', 'test-unit-1')
daemon2 = FollowerComponent('test-daemon-2', 'test-unit-2')
daemon2.is_running = Mock()
follower1 = FollowerComponent('test-follower-1')
class TestApp(App):
"""Test app"""
app_id = 'test-app'
app = TestApp()
app.add(daemon1)
app.add(daemon2)
app.add(follower1)
service_is_running.return_value = True
daemon2.is_running.return_value = False
assert not app_is_running(app)
service_is_running.return_value = False
daemon2.is_running.return_value = False
assert not app_is_running(app)
service_is_running.return_value = True
daemon2.is_running.return_value = True
assert app_is_running(app)
@patch('psutil.net_connections')
def test_diagnose_port_listening(connections):
"""Test running port listening diagnostics test."""
connections.return_value = [
Mock(status='LISTEN', laddr=('0.0.0.0', 1234), family=socket.AF_INET),
Mock(status='ESTABLISHED', laddr=('0.0.0.0', 2345),
family=socket.AF_INET),
Mock(raddr=(), laddr=('0.0.0.0', 3456), family=socket.AF_INET),
Mock(raddr=('1.1.1.1', 53), laddr=('0.0.0.0', 4567),
family=socket.AF_INET),
Mock(status='LISTEN', laddr=('::1', 5678), familiy=socket.AF_INET6),
Mock(status='LISTEN', laddr=('::', 6789), familiy=socket.AF_INET6),
Mock(raddr=(), laddr=('::1', 5678), familiy=socket.AF_INET6),
Mock(raddr=(), laddr=('::', 6789), familiy=socket.AF_INET6),
]
# Check that message is correct
results = diagnose_port_listening(1234)
assert results == DiagnosticCheck('daemon-listening-tcp-1234',
'Listening on tcp port 1234',
Result.PASSED)
results = diagnose_port_listening(1234, 'tcp', '0.0.0.0')
assert results == DiagnosticCheck(
'daemon-listening-address-tcp-1234-0.0.0.0',
'Listening on tcp port 0.0.0.0:1234', Result.PASSED)
# Failed results
results = diagnose_port_listening(4321)
assert results == DiagnosticCheck('daemon-listening-tcp-4321',
'Listening on tcp port 4321',
Result.FAILED)
results = diagnose_port_listening(4321, 'tcp', '0.0.0.0')
assert results == DiagnosticCheck(
'daemon-listening-address-tcp-4321-0.0.0.0',
'Listening on tcp port 0.0.0.0:4321', Result.FAILED)
# Check if psutil call is being made with right argument
results = diagnose_port_listening(1234, 'tcp')
connections.assert_called_with('tcp')
results = diagnose_port_listening(1234, 'tcp4')
connections.assert_called_with('tcp')
results = diagnose_port_listening(1234, 'tcp6')
connections.assert_called_with('tcp6')
results = diagnose_port_listening(3456, 'udp')
connections.assert_called_with('udp')
results = diagnose_port_listening(3456, 'udp4')
connections.assert_called_with('udp')
results = diagnose_port_listening(3456, 'udp6')
connections.assert_called_with('udp6')
# TCP
assert diagnose_port_listening(1234).result == Result.PASSED
assert diagnose_port_listening(1000).result == Result.FAILED
assert diagnose_port_listening(2345).result == Result.FAILED
assert diagnose_port_listening(1234, 'tcp',
'0.0.0.0').result == Result.PASSED
assert diagnose_port_listening(1234, 'tcp',
'1.1.1.1').result == Result.FAILED
assert diagnose_port_listening(1234, 'tcp6').result == Result.PASSED
assert diagnose_port_listening(1234, 'tcp4').result == Result.PASSED
assert diagnose_port_listening(6789, 'tcp4').result == Result.PASSED
assert diagnose_port_listening(5678, 'tcp4').result == Result.FAILED
# UDP
assert diagnose_port_listening(3456, 'udp').result == Result.PASSED
assert diagnose_port_listening(3000, 'udp').result == Result.FAILED
assert diagnose_port_listening(4567, 'udp').result == Result.FAILED
assert diagnose_port_listening(3456, 'udp',
'0.0.0.0').result == Result.PASSED
assert diagnose_port_listening(3456, 'udp',
'1.1.1.1').result == Result.FAILED
assert diagnose_port_listening(3456, 'udp6').result == Result.PASSED
assert diagnose_port_listening(3456, 'udp4').result == Result.PASSED
assert diagnose_port_listening(6789, 'udp4').result == Result.PASSED
assert diagnose_port_listening(5678, 'udp4').result == Result.FAILED
@patch('subprocess.Popen')
def test_diagnose_netcat(popen):
"""Test running diagnostic test using netcat."""
popen().returncode = 0
result = diagnose_netcat('test-host', 3300, input='test-input')
assert result == DiagnosticCheck('daemon-netcat-test-host-3300',
'Connect to test-host:3300',
Result.PASSED)
assert popen.mock_calls[1][1] == (['nc', 'test-host', '3300'], )
assert popen.mock_calls[2] == call().communicate(input=b'test-input')
result = diagnose_netcat('test-host', 3300, input='test-input',
negate=True)
assert result == DiagnosticCheck('daemon-netcat-negate-test-host-3300',
'Cannot connect to test-host:3300',
Result.FAILED)
popen().returncode = 1
result = diagnose_netcat('test-host', 3300, input='test-input')
assert result == DiagnosticCheck('daemon-netcat-test-host-3300',
'Connect to test-host:3300',
Result.FAILED)
result = diagnose_netcat('test-host', 3300, input='test-input',
negate=True)
assert result == DiagnosticCheck('daemon-netcat-negate-test-host-3300',
'Cannot connect to test-host:3300',
Result.PASSED)
def test_related_daemon_initialization():
"""Test that initializing related daemon works."""
component = RelatedDaemon('test-component', 'test-daemon')
assert component.component_id == 'test-component'
assert component.unit == 'test-daemon'
with pytest.raises(ValueError):
RelatedDaemon(None, 'test-daemon')