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# This file is part of cloud-init. See LICENSE file for license information.
import logging
import shutil
import tempfile
import unittest
from contextlib import ExitStack
from unittest import mock
from cloudinit import distros
from cloudinit.config import cc_ca_certs
from cloudinit import helpers
from cloudinit import subp
from cloudinit import util
from tests.unittests.helpers import TestCase
from tests.unittests.util import get_cloud
class TestNoConfig(unittest.TestCase):
def setUp(self):
super(TestNoConfig, self).setUp()
self.name = "ca-certs"
self.cloud_init = None
self.log = logging.getLogger("TestNoConfig")
self.args = []
def test_no_config(self):
"""
Test that nothing is done if no ca-certs configuration is provided.
"""
config = util.get_builtin_cfg()
with ExitStack() as mocks:
util_mock = mocks.enter_context(
mock.patch.object(util, 'write_file'))
certs_mock = mocks.enter_context(
mock.patch.object(cc_ca_certs, 'update_ca_certs'))
cc_ca_certs.handle(self.name, config, self.cloud_init, self.log,
self.args)
self.assertEqual(util_mock.call_count, 0)
self.assertEqual(certs_mock.call_count, 0)
class TestConfig(TestCase):
def setUp(self):
super(TestConfig, self).setUp()
self.name = "ca-certs"
self.paths = None
self.log = logging.getLogger("TestNoConfig")
self.args = []
def _fetch_distro(self, kind):
cls = distros.fetch(kind)
paths = helpers.Paths({})
return cls(kind, {}, paths)
def _mock_init(self):
self.mocks = ExitStack()
self.addCleanup(self.mocks.close)
# Mock out the functions that actually modify the system
self.mock_add = self.mocks.enter_context(
mock.patch.object(cc_ca_certs, 'add_ca_certs'))
self.mock_update = self.mocks.enter_context(
mock.patch.object(cc_ca_certs, 'update_ca_certs'))
self.mock_remove = self.mocks.enter_context(
mock.patch.object(cc_ca_certs, 'remove_default_ca_certs'))
def test_no_trusted_list(self):
"""
Test that no certificates are written if the 'trusted' key is not
present.
"""
config = {"ca-certs": {}}
for distro_name in cc_ca_certs.distros:
self._mock_init()
cloud = get_cloud(distro_name)
cc_ca_certs.handle(self.name, config, cloud, self.log, self.args)
self.assertEqual(self.mock_add.call_count, 0)
self.assertEqual(self.mock_update.call_count, 1)
self.assertEqual(self.mock_remove.call_count, 0)
def test_empty_trusted_list(self):
"""Test that no certificate are written if 'trusted' list is empty."""
config = {"ca-certs": {"trusted": []}}
for distro_name in cc_ca_certs.distros:
self._mock_init()
cloud = get_cloud(distro_name)
cc_ca_certs.handle(self.name, config, cloud, self.log, self.args)
self.assertEqual(self.mock_add.call_count, 0)
self.assertEqual(self.mock_update.call_count, 1)
self.assertEqual(self.mock_remove.call_count, 0)
def test_single_trusted(self):
"""Test that a single cert gets passed to add_ca_certs."""
config = {"ca-certs": {"trusted": ["CERT1"]}}
for distro_name in cc_ca_certs.distros:
self._mock_init()
cloud = get_cloud(distro_name)
conf = cc_ca_certs._distro_ca_certs_configs(distro_name)
cc_ca_certs.handle(self.name, config, cloud, self.log, self.args)
self.mock_add.assert_called_once_with(conf, ['CERT1'])
self.assertEqual(self.mock_update.call_count, 1)
self.assertEqual(self.mock_remove.call_count, 0)
def test_multiple_trusted(self):
"""Test that multiple certs get passed to add_ca_certs."""
config = {"ca-certs": {"trusted": ["CERT1", "CERT2"]}}
for distro_name in cc_ca_certs.distros:
self._mock_init()
cloud = get_cloud(distro_name)
conf = cc_ca_certs._distro_ca_certs_configs(distro_name)
cc_ca_certs.handle(self.name, config, cloud, self.log, self.args)
self.mock_add.assert_called_once_with(conf, ['CERT1', 'CERT2'])
self.assertEqual(self.mock_update.call_count, 1)
self.assertEqual(self.mock_remove.call_count, 0)
def test_remove_default_ca_certs(self):
"""Test remove_defaults works as expected."""
config = {"ca-certs": {"remove-defaults": True}}
for distro_name in cc_ca_certs.distros:
self._mock_init()
cloud = get_cloud(distro_name)
cc_ca_certs.handle(self.name, config, cloud, self.log, self.args)
self.assertEqual(self.mock_add.call_count, 0)
self.assertEqual(self.mock_update.call_count, 1)
self.assertEqual(self.mock_remove.call_count, 1)
def test_no_remove_defaults_if_false(self):
"""Test remove_defaults is not called when config value is False."""
config = {"ca-certs": {"remove-defaults": False}}
for distro_name in cc_ca_certs.distros:
self._mock_init()
cloud = get_cloud(distro_name)
cc_ca_certs.handle(self.name, config, cloud, self.log, self.args)
self.assertEqual(self.mock_add.call_count, 0)
self.assertEqual(self.mock_update.call_count, 1)
self.assertEqual(self.mock_remove.call_count, 0)
def test_correct_order_for_remove_then_add(self):
"""Test remove_defaults is not called when config value is False."""
config = {"ca-certs": {"remove-defaults": True, "trusted": ["CERT1"]}}
for distro_name in cc_ca_certs.distros:
self._mock_init()
cloud = get_cloud(distro_name)
conf = cc_ca_certs._distro_ca_certs_configs(distro_name)
cc_ca_certs.handle(self.name, config, cloud, self.log, self.args)
self.mock_add.assert_called_once_with(conf, ['CERT1'])
self.assertEqual(self.mock_update.call_count, 1)
self.assertEqual(self.mock_remove.call_count, 1)
class TestAddCaCerts(TestCase):
def setUp(self):
super(TestAddCaCerts, self).setUp()
tmpdir = tempfile.mkdtemp()
self.addCleanup(shutil.rmtree, tmpdir)
self.paths = helpers.Paths({
'cloud_dir': tmpdir,
})
self.add_patch("cloudinit.config.cc_ca_certs.os.stat", "m_stat")
def _fetch_distro(self, kind):
cls = distros.fetch(kind)
paths = helpers.Paths({})
return cls(kind, {}, paths)
def test_no_certs_in_list(self):
"""Test that no certificate are written if not provided."""
for distro_name in cc_ca_certs.distros:
conf = cc_ca_certs._distro_ca_certs_configs(distro_name)
with mock.patch.object(util, 'write_file') as mockobj:
cc_ca_certs.add_ca_certs(conf, [])
self.assertEqual(mockobj.call_count, 0)
def test_single_cert_trailing_cr(self):
"""Test adding a single certificate to the trusted CAs
when existing ca-certificates has trailing newline"""
cert = "CERT1\nLINE2\nLINE3"
ca_certs_content = "line1\nline2\ncloud-init-ca-certs.crt\nline3\n"
expected = "line1\nline2\nline3\ncloud-init-ca-certs.crt\n"
self.m_stat.return_value.st_size = 1
for distro_name in cc_ca_certs.distros:
conf = cc_ca_certs._distro_ca_certs_configs(distro_name)
with ExitStack() as mocks:
mock_write = mocks.enter_context(
mock.patch.object(util, 'write_file'))
mock_load = mocks.enter_context(
mock.patch.object(util, 'load_file',
return_value=ca_certs_content))
cc_ca_certs.add_ca_certs(conf, [cert])
mock_write.assert_has_calls([
mock.call(conf['ca_cert_full_path'],
cert, mode=0o644)])
if conf['ca_cert_config'] is not None:
mock_write.assert_has_calls([
mock.call(conf['ca_cert_config'],
expected, omode="wb")])
mock_load.assert_called_once_with(conf['ca_cert_config'])
def test_single_cert_no_trailing_cr(self):
"""Test adding a single certificate to the trusted CAs
when existing ca-certificates has no trailing newline"""
cert = "CERT1\nLINE2\nLINE3"
ca_certs_content = "line1\nline2\nline3"
self.m_stat.return_value.st_size = 1
for distro_name in cc_ca_certs.distros:
conf = cc_ca_certs._distro_ca_certs_configs(distro_name)
with ExitStack() as mocks:
mock_write = mocks.enter_context(
mock.patch.object(util, 'write_file'))
mock_load = mocks.enter_context(
mock.patch.object(util, 'load_file',
return_value=ca_certs_content))
cc_ca_certs.add_ca_certs(conf, [cert])
mock_write.assert_has_calls([
mock.call(conf['ca_cert_full_path'],
cert, mode=0o644)])
if conf['ca_cert_config'] is not None:
mock_write.assert_has_calls([
mock.call(conf['ca_cert_config'],
"%s\n%s\n" % (ca_certs_content,
conf['ca_cert_filename']),
omode="wb")])
mock_load.assert_called_once_with(conf['ca_cert_config'])
def test_single_cert_to_empty_existing_ca_file(self):
"""Test adding a single certificate to the trusted CAs
when existing ca-certificates.conf is empty"""
cert = "CERT1\nLINE2\nLINE3"
expected = "cloud-init-ca-certs.crt\n"
self.m_stat.return_value.st_size = 0
for distro_name in cc_ca_certs.distros:
conf = cc_ca_certs._distro_ca_certs_configs(distro_name)
with mock.patch.object(util, 'write_file',
autospec=True) as m_write:
cc_ca_certs.add_ca_certs(conf, [cert])
m_write.assert_has_calls([
mock.call(conf['ca_cert_full_path'],
cert, mode=0o644)])
if conf['ca_cert_config'] is not None:
m_write.assert_has_calls([
mock.call(conf['ca_cert_config'],
expected, omode="wb")])
def test_multiple_certs(self):
"""Test adding multiple certificates to the trusted CAs."""
certs = ["CERT1\nLINE2\nLINE3", "CERT2\nLINE2\nLINE3"]
expected_cert_file = "\n".join(certs)
ca_certs_content = "line1\nline2\nline3"
self.m_stat.return_value.st_size = 1
for distro_name in cc_ca_certs.distros:
conf = cc_ca_certs._distro_ca_certs_configs(distro_name)
with ExitStack() as mocks:
mock_write = mocks.enter_context(
mock.patch.object(util, 'write_file'))
mock_load = mocks.enter_context(
mock.patch.object(util, 'load_file',
return_value=ca_certs_content))
cc_ca_certs.add_ca_certs(conf, certs)
mock_write.assert_has_calls([
mock.call(conf['ca_cert_full_path'],
expected_cert_file, mode=0o644)])
if conf['ca_cert_config'] is not None:
mock_write.assert_has_calls([
mock.call(conf['ca_cert_config'],
"%s\n%s\n" % (ca_certs_content,
conf['ca_cert_filename']),
omode='wb')])
mock_load.assert_called_once_with(conf['ca_cert_config'])
class TestUpdateCaCerts(unittest.TestCase):
def test_commands(self):
for distro_name in cc_ca_certs.distros:
conf = cc_ca_certs._distro_ca_certs_configs(distro_name)
with mock.patch.object(subp, 'subp') as mockobj:
cc_ca_certs.update_ca_certs(conf)
mockobj.assert_called_once_with(
conf['ca_cert_update_cmd'], capture=False)
class TestRemoveDefaultCaCerts(TestCase):
def setUp(self):
super(TestRemoveDefaultCaCerts, self).setUp()
tmpdir = tempfile.mkdtemp()
self.addCleanup(shutil.rmtree, tmpdir)
self.paths = helpers.Paths({
'cloud_dir': tmpdir,
})
def test_commands(self):
for distro_name in cc_ca_certs.distros:
conf = cc_ca_certs._distro_ca_certs_configs(distro_name)
with ExitStack() as mocks:
mock_delete = mocks.enter_context(
mock.patch.object(util, 'delete_dir_contents'))
mock_write = mocks.enter_context(
mock.patch.object(util, 'write_file'))
mock_subp = mocks.enter_context(
mock.patch.object(subp, 'subp'))
cc_ca_certs.remove_default_ca_certs(distro_name, conf)
mock_delete.assert_has_calls([
mock.call(conf['ca_cert_path']),
mock.call(conf['ca_cert_system_path'])])
if conf['ca_cert_config'] is not None:
mock_write.assert_called_once_with(
conf['ca_cert_config'], "", mode=0o644)
if distro_name in ['debian', 'ubuntu']:
mock_subp.assert_called_once_with(
('debconf-set-selections', '-'),
"ca-certificates \
ca-certificates/trust_new_crts select no")
# vi: ts=4 expandtab
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