571 lines
23 KiB
Python
571 lines
23 KiB
Python
# Copyright 2012, VMware, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import copy
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import signal
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import socket
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from unittest import mock
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import testtools
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from neutron_lib import exceptions
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from neutron_lib import fixture as lib_fixtures
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from oslo_config import cfg
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import oslo_i18n
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from neutron.agent.linux import utils
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from neutron.privileged.agent.linux import utils as priv_utils
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from neutron.tests import base
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_marker = object()
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class AgentUtilsExecuteTest(base.BaseTestCase):
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def setUp(self):
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super(AgentUtilsExecuteTest, self).setUp()
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self.test_file = self.get_temp_file_path('test_execute.tmp')
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open(self.test_file, 'w').close()
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self.process = mock.patch('eventlet.green.subprocess.Popen').start()
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self.process.return_value.returncode = 0
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self.mock_popen = self.process.return_value.communicate
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def test_without_helper(self):
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expected = "%s\n" % self.test_file
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self.mock_popen.return_value = [expected, ""]
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result = utils.execute(["ls", self.test_file])
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self.assertEqual(result, expected)
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def test_with_root_privileges_privsep(self):
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with mock.patch.object(priv_utils, 'execute_process') as \
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mock_execute_process:
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mock_execute_process.return_value = ['', '', 0]
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utils.execute(['ls', self.test_file], run_as_root=True,
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privsep_exec=True)
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mock_execute_process.assert_called_once()
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def test_with_root_privileges_rootwrap(self):
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expected = "ls %s\n" % self.test_file
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self.mock_popen.return_value = [expected, ""]
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self.config(group='AGENT', root_helper='echo')
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result = utils.execute(["ls", self.test_file], run_as_root=True)
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self.assertEqual(result, expected)
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@mock.patch.object(utils.RootwrapDaemonHelper, 'get_client')
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def test_with_root_privileges_rootwrap_exception(self, get_client):
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client_inst = mock.Mock()
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client_inst.execute.side_effect = RuntimeError
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get_client.return_value = client_inst
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self.config(group='AGENT', root_helper_daemon='echo')
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with mock.patch.object(utils, 'LOG') as log:
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self.assertRaises(RuntimeError, utils.execute,
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['ls'], run_as_root=True)
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self.assertTrue(log.error.called)
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def test_stderr_true(self):
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expected = "%s\n" % self.test_file
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self.mock_popen.return_value = [expected, ""]
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out = utils.execute(["ls", self.test_file], return_stderr=True)
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self.assertIsInstance(out, tuple)
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self.assertEqual(out, (expected, ""))
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def test_check_exit_code(self):
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self.mock_popen.return_value = ["", ""]
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stdout = utils.execute(["ls", self.test_file[:-1]],
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check_exit_code=False)
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self.assertEqual("", stdout)
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def test_execute_raises(self):
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self.mock_popen.side_effect = RuntimeError
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self.assertRaises(RuntimeError, utils.execute,
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["ls", self.test_file[:-1]])
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def test_process_input(self):
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expected = "%s\n" % self.test_file[:-1]
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self.mock_popen.return_value = [expected, ""]
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result = utils.execute(["cat"], process_input="%s\n" %
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self.test_file[:-1])
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self.assertEqual(result, expected)
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def test_with_addl_env(self):
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expected = "%s\n" % self.test_file
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self.mock_popen.return_value = [expected, ""]
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result = utils.execute(["ls", self.test_file],
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addl_env={'foo': 'bar'})
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self.assertEqual(result, expected)
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def test_return_code_log_error_raise_runtime(self):
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self.mock_popen.return_value = ('', '')
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self.process.return_value.returncode = 1
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with mock.patch.object(utils, 'LOG') as log:
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self.assertRaises(RuntimeError, utils.execute,
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['ls'])
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self.assertTrue(log.error.called)
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def test_return_code_log_error_no_raise_runtime(self):
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self.mock_popen.return_value = ('', '')
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self.process.return_value.returncode = 1
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with mock.patch.object(utils, 'LOG') as log:
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utils.execute(['ls'], check_exit_code=False)
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self.assertTrue(log.error.called)
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def test_return_code_log_debug(self):
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self.mock_popen.return_value = ('', '')
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with mock.patch.object(utils, 'LOG') as log:
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utils.execute(['ls'])
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self.assertTrue(log.debug.called)
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def test_return_code_log_error_change_locale(self):
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ja_output = 'std_out in Japanese'
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ja_error = 'std_err in Japanese'
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ja_message_out = oslo_i18n._message.Message(ja_output)
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ja_message_err = oslo_i18n._message.Message(ja_error)
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ja_translate_out = oslo_i18n._translate.translate(ja_message_out, 'ja')
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ja_translate_err = oslo_i18n._translate.translate(ja_message_err, 'ja')
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self.mock_popen.return_value = (ja_translate_out, ja_translate_err)
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self.process.return_value.returncode = 1
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with mock.patch.object(utils, 'LOG') as log:
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utils.execute(['ls'], check_exit_code=False)
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self.assertIn(ja_translate_out, str(log.error.call_args_list))
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self.assertIn(ja_translate_err, str(log.error.call_args_list))
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def test_return_code_raise_runtime_do_not_log_fail_as_error(self):
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self.mock_popen.return_value = ('', '')
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self.process.return_value.returncode = 1
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with mock.patch.object(utils, 'LOG') as log:
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self.assertRaises(exceptions.ProcessExecutionError, utils.execute,
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['ls'], log_fail_as_error=False)
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self.assertFalse(log.error.called)
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def test_encode_process_input(self):
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str_idata = "%s\n" % self.test_file[:-1]
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str_odata = "%s\n" % self.test_file
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bytes_idata = str_idata.encode(encoding='utf-8')
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bytes_odata = str_odata.encode(encoding='utf-8')
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self.mock_popen.return_value = [bytes_odata, b'']
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result = utils.execute(['cat'], process_input=str_idata)
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self.mock_popen.assert_called_once_with(bytes_idata)
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self.assertEqual(str_odata, result)
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def test_return_str_data(self):
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str_data = "%s\n" % self.test_file
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self.mock_popen.return_value = [str_data, '']
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result = utils.execute(['ls', self.test_file], return_stderr=True)
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self.assertEqual((str_data, ''), result)
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def test_surrogateescape_in_decoding_out_data(self):
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bytes_err_data = b'\xed\xa0\xbd'
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err_data = bytes_err_data.decode('utf-8', 'surrogateescape')
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out_data = "%s\n" % self.test_file
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bytes_out_data = out_data.encode(encoding='utf-8')
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self.mock_popen.return_value = [bytes_out_data, bytes_err_data]
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result = utils.execute(['ls', self.test_file], return_stderr=True)
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self.assertEqual((out_data, err_data), result)
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class AgentUtilsExecuteEncodeTest(base.BaseTestCase):
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def setUp(self):
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super(AgentUtilsExecuteEncodeTest, self).setUp()
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self.test_file = self.get_temp_file_path('test_execute.tmp')
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open(self.test_file, 'w').close()
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def test_decode_return_data(self):
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str_data = "%s\n" % self.test_file
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result = utils.execute(['ls', self.test_file], return_stderr=True)
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self.assertEqual((str_data, ''), result)
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class TestFindForkTopParent(base.BaseTestCase):
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def _test_find_fork_top_parent(self, expected=_marker,
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find_parent_pid_retvals=None,
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pid_invoked_with_cmdline_retvals=None):
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def _find_parent_pid(x):
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if find_parent_pid_retvals:
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return find_parent_pid_retvals.pop(0)
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pid_invoked_with_cmdline = {}
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if pid_invoked_with_cmdline_retvals:
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pid_invoked_with_cmdline['side_effect'] = (
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pid_invoked_with_cmdline_retvals)
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else:
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pid_invoked_with_cmdline['return_value'] = False
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with mock.patch.object(utils, 'find_parent_pid',
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side_effect=_find_parent_pid), \
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mock.patch.object(utils, 'pid_invoked_with_cmdline',
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**pid_invoked_with_cmdline):
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actual = utils.find_fork_top_parent(_marker)
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self.assertEqual(expected, actual)
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def test_returns_own_pid_no_parent(self):
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self._test_find_fork_top_parent()
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def test_returns_own_pid_nofork(self):
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self._test_find_fork_top_parent(find_parent_pid_retvals=['2', '3'])
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def test_returns_first_parent_pid_fork(self):
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self._test_find_fork_top_parent(
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expected='2',
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find_parent_pid_retvals=['2', '3', '4'],
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pid_invoked_with_cmdline_retvals=[True, False, False])
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def test_returns_top_parent_pid_fork(self):
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self._test_find_fork_top_parent(
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expected='4',
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find_parent_pid_retvals=['2', '3', '4'],
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pid_invoked_with_cmdline_retvals=[True, True, True])
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class TestKillProcess(base.BaseTestCase):
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def _test_kill_process(self, pid, raise_exception=False,
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kill_signal=signal.SIGKILL, pid_killed=True):
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if raise_exception:
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exc = exceptions.ProcessExecutionError('', returncode=0)
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else:
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exc = None
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with mock.patch.object(utils, 'execute',
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side_effect=exc) as mock_execute:
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with mock.patch.object(utils, 'process_is_running',
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return_value=not pid_killed):
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utils.kill_process(pid, kill_signal, run_as_root=True,
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privsep_exec=False)
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mock_execute.assert_called_with(['kill', '-%d' % kill_signal, pid],
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run_as_root=True, privsep_exec=False)
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def test_kill_process_returns_none_for_valid_pid(self):
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self._test_kill_process('1')
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def test_kill_process_returns_none_for_stale_pid(self):
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self._test_kill_process('1', raise_exception=True)
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def test_kill_process_raises_exception_for_execute_exception(self):
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with testtools.ExpectedException(exceptions.ProcessExecutionError):
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# Simulate that the process is running after trying to kill due to
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# any reason such as, for example, Permission denied
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self._test_kill_process('1', raise_exception=True,
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pid_killed=False)
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def test_kill_process_with_different_signal(self):
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self._test_kill_process('1', kill_signal=signal.SIGTERM)
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class TestGetCmdlineFromPid(base.BaseTestCase):
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def setUp(self):
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super(TestGetCmdlineFromPid, self).setUp()
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self.pid = 34
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self.process_is_running_mock = mock.patch.object(
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utils, "process_is_running").start()
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def _test_cmdline(self, process, expected_cmd):
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self.process_is_running_mock.return_value = True
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mock_open = self.useFixture(
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lib_fixtures.OpenFixture('/proc/%s/cmdline' % self.pid, process)
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).mock_open
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cmdline = utils.get_cmdline_from_pid(self.pid)
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mock_open.assert_called_once_with('/proc/%s/cmdline' % self.pid, 'r')
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self.assertEqual(expected_cmd, cmdline)
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def test_cmdline_separated_with_null_char(self):
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process_cmd = "python3\0test-binary\0test option\0"
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expected_cmdline = ["python3", "test-binary", "test option"]
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self._test_cmdline(process_cmd, expected_cmdline)
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def test_cmdline_separated_with_space_char(self):
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process_cmd = "python3 test-binary test option\0"
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expected_cmdline = ["python3", "test-binary", "test", "option"]
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self._test_cmdline(process_cmd, expected_cmdline)
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def test_cmdline_with_single_argument(self):
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process_cmd = "test-binary\0"
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expected_cmdline = ["test-binary"]
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self._test_cmdline(process_cmd, expected_cmdline)
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def test_no_process_running(self):
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self.process_is_running_mock.return_value = False
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mock_open = self.useFixture(
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lib_fixtures.OpenFixture('/proc/%s/cmdline' % self.pid)
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).mock_open
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cmdline = utils.get_cmdline_from_pid(self.pid)
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mock_open.assert_not_called()
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self.assertEqual([], cmdline)
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def test_cmdline_process_disappearing(self):
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self.process_is_running_mock.return_value = True
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mock_open = self.useFixture(
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lib_fixtures.OpenFixture('/proc/%s/cmdline' % self.pid, 'process')
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).mock_open
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mock_open.side_effect = IOError()
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cmdline = utils.get_cmdline_from_pid(self.pid)
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mock_open.assert_called_once_with('/proc/%s/cmdline' % self.pid, 'r')
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self.assertEqual([], cmdline)
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class TestGetRoothelperChildPid(base.BaseTestCase):
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def _test_get_root_helper_child_pid(self, expected=_marker,
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run_as_root=False, pids=None,
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cmds=None):
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def _find_child_pids(x):
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if not pids:
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return []
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pids.pop(0)
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return pids
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mock_pid = object()
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pid_invoked_with_cmdline = {}
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if cmds:
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pid_invoked_with_cmdline['side_effect'] = cmds
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else:
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pid_invoked_with_cmdline['return_value'] = False
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with mock.patch.object(utils, 'find_child_pids',
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side_effect=_find_child_pids), \
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mock.patch.object(utils, 'pid_invoked_with_cmdline',
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**pid_invoked_with_cmdline):
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actual = utils.get_root_helper_child_pid(
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mock_pid, mock.ANY, run_as_root)
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if expected is _marker:
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expected = str(mock_pid)
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self.assertEqual(expected, actual)
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def test_returns_process_pid_not_root(self):
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self._test_get_root_helper_child_pid()
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def test_returns_child_pid_as_root(self):
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self._test_get_root_helper_child_pid(expected='2', pids=['1', '2'],
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run_as_root=True,
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cmds=[True])
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def test_returns_last_child_pid_as_root(self):
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self._test_get_root_helper_child_pid(expected='3',
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pids=['1', '2', '3'],
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run_as_root=True,
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cmds=[False, True])
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def test_returns_first_non_root_helper_child(self):
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self._test_get_root_helper_child_pid(
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expected='2',
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pids=['1', '2', '3'],
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run_as_root=True,
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cmds=[True, False])
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def test_returns_none_as_root(self):
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self._test_get_root_helper_child_pid(expected=None, run_as_root=True)
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class TestPathUtilities(base.BaseTestCase):
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def test_remove_abs_path(self):
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self.assertEqual(['ping', '8.8.8.8'],
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utils.remove_abs_path(['/usr/bin/ping', '8.8.8.8']))
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def test_cmd_matches_expected_matches_abs_path(self):
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cmd = ['/bar/../foo']
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self.assertTrue(utils.cmd_matches_expected(cmd, cmd, None))
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def test_cmd_matches_expected_matches_script(self):
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self.assertTrue(utils.cmd_matches_expected(['python', 'script'],
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['script'], None))
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def test_cmd_matches_expected_doesnt_match(self):
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self.assertFalse(utils.cmd_matches_expected('foo', 'bar', None))
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def test_cmd_matches_expected_matches_script_with_procname(self):
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self.assertTrue(utils.cmd_matches_expected(
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['proc_name', '(python', 'script)'], ['script'], 'proc_name'))
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def test_cmd_matches_expected_matches_abs_path_script_with_procname(self):
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self.assertTrue(utils.cmd_matches_expected(
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['proc_name', '(python', '/bar/../foo)'], ['/bar/../foo'],
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'proc_name'))
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self.assertTrue(utils.cmd_matches_expected(
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['proc_name', '(python', '/bar/../foo', 'input_param)'],
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['/bar/../foo', 'input_param'], 'proc_name'))
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self.assertTrue(utils.cmd_matches_expected(
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['proc_name', '(/bar/../foo', 'input_param)'],
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['/bar/../foo', 'input_param'], 'proc_name'))
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class FakeUser(object):
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def __init__(self, name):
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self.pw_name = name
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class FakeGroup(object):
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def __init__(self, name):
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self.gr_name = name
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class TestBaseOSUtils(base.BaseTestCase):
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EUID = 123
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EUNAME = 'user'
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EGID = 456
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EGNAME = 'group'
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@mock.patch('os.geteuid', return_value=EUID)
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@mock.patch('pwd.getpwuid', return_value=FakeUser(EUNAME))
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def test_is_effective_user_id(self, getpwuid, geteuid):
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self.assertTrue(utils.is_effective_user(self.EUID))
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geteuid.assert_called_once_with()
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self.assertFalse(getpwuid.called)
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@mock.patch('os.geteuid', return_value=EUID)
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@mock.patch('pwd.getpwuid', return_value=FakeUser(EUNAME))
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def test_is_effective_user_str_id(self, getpwuid, geteuid):
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self.assertTrue(utils.is_effective_user(str(self.EUID)))
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geteuid.assert_called_once_with()
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self.assertFalse(getpwuid.called)
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@mock.patch('os.geteuid', return_value=EUID)
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@mock.patch('pwd.getpwuid', return_value=FakeUser(EUNAME))
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def test_is_effective_user_name(self, getpwuid, geteuid):
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self.assertTrue(utils.is_effective_user(self.EUNAME))
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geteuid.assert_called_once_with()
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getpwuid.assert_called_once_with(self.EUID)
|
|
|
|
@mock.patch('os.geteuid', return_value=EUID)
|
|
@mock.patch('pwd.getpwuid', return_value=FakeUser(EUNAME))
|
|
def test_is_not_effective_user(self, getpwuid, geteuid):
|
|
self.assertFalse(utils.is_effective_user('wrong'))
|
|
geteuid.assert_called_once_with()
|
|
getpwuid.assert_called_once_with(self.EUID)
|
|
|
|
@mock.patch('os.getegid', return_value=EGID)
|
|
@mock.patch('grp.getgrgid', return_value=FakeGroup(EGNAME))
|
|
def test_is_effective_group_id(self, getgrgid, getegid):
|
|
self.assertTrue(utils.is_effective_group(self.EGID))
|
|
getegid.assert_called_once_with()
|
|
self.assertFalse(getgrgid.called)
|
|
|
|
@mock.patch('os.getegid', return_value=EGID)
|
|
@mock.patch('grp.getgrgid', return_value=FakeGroup(EGNAME))
|
|
def test_is_effective_group_str_id(self, getgrgid, getegid):
|
|
self.assertTrue(utils.is_effective_group(str(self.EGID)))
|
|
getegid.assert_called_once_with()
|
|
self.assertFalse(getgrgid.called)
|
|
|
|
@mock.patch('os.getegid', return_value=EGID)
|
|
@mock.patch('grp.getgrgid', return_value=FakeGroup(EGNAME))
|
|
def test_is_effective_group_name(self, getgrgid, getegid):
|
|
self.assertTrue(utils.is_effective_group(self.EGNAME))
|
|
getegid.assert_called_once_with()
|
|
getgrgid.assert_called_once_with(self.EGID)
|
|
|
|
@mock.patch('os.getegid', return_value=EGID)
|
|
@mock.patch('grp.getgrgid', return_value=FakeGroup(EGNAME))
|
|
def test_is_not_effective_group(self, getgrgid, getegid):
|
|
self.assertFalse(utils.is_effective_group('wrong'))
|
|
getegid.assert_called_once_with()
|
|
getgrgid.assert_called_once_with(self.EGID)
|
|
|
|
|
|
class TestUnixDomainHttpConnection(base.BaseTestCase):
|
|
def test_connect(self):
|
|
with mock.patch.object(utils, 'cfg') as cfg:
|
|
cfg.CONF.metadata_proxy_socket = '/the/path'
|
|
with mock.patch('socket.socket') as socket_create:
|
|
conn = utils.UnixDomainHTTPConnection('169.254.169.254',
|
|
timeout=3)
|
|
conn.connect()
|
|
|
|
socket_create.assert_has_calls([
|
|
mock.call(socket.AF_UNIX, socket.SOCK_STREAM),
|
|
mock.call().settimeout(3),
|
|
mock.call().connect('/the/path')]
|
|
)
|
|
self.assertEqual(conn.timeout, 3)
|
|
|
|
|
|
class TestUnixDomainHttpProtocol(base.BaseTestCase):
|
|
def setUp(self):
|
|
super(TestUnixDomainHttpProtocol, self).setUp()
|
|
self.ewhi = mock.patch('eventlet.wsgi.HttpProtocol.__init__').start()
|
|
|
|
def test_init_empty_client(self):
|
|
for addr in ('', b''):
|
|
utils.UnixDomainHttpProtocol(mock.Mock(), addr, mock.Mock())
|
|
self.ewhi.assert_called_once_with(mock.ANY, mock.ANY,
|
|
('<local>', 0), mock.ANY)
|
|
self.ewhi.reset_mock()
|
|
|
|
def test_init_with_client(self):
|
|
utils.UnixDomainHttpProtocol(mock.Mock(), 'foo', mock.Mock())
|
|
self.ewhi.assert_called_once_with(mock.ANY, mock.ANY, 'foo', mock.ANY)
|
|
|
|
def test_init_new_style_empty_client(self):
|
|
conn_state = ['', mock.Mock(), mock.Mock()]
|
|
# have to make a copy since the init will modify what we pass
|
|
csc = copy.copy(conn_state)
|
|
csc[0] = ('<local>', 0)
|
|
utils.UnixDomainHttpProtocol(conn_state, mock.Mock())
|
|
self.ewhi.assert_called_once_with(mock.ANY, csc, mock.ANY)
|
|
|
|
def test_init_new_style_client(self):
|
|
conn_state = ['foo', mock.Mock(), mock.Mock()]
|
|
utils.UnixDomainHttpProtocol(conn_state, mock.Mock())
|
|
self.ewhi.assert_called_once_with(mock.ANY, conn_state, mock.ANY)
|
|
|
|
def test_init_unknown_client(self):
|
|
utils.UnixDomainHttpProtocol('foo')
|
|
self.ewhi.assert_called_once_with(mock.ANY, 'foo')
|
|
|
|
|
|
class TestUnixDomainWSGIServer(base.BaseTestCase):
|
|
def setUp(self):
|
|
super(TestUnixDomainWSGIServer, self).setUp()
|
|
self.eventlet_p = mock.patch.object(utils, 'eventlet')
|
|
self.eventlet = self.eventlet_p.start()
|
|
|
|
def test_start(self):
|
|
self.server = utils.UnixDomainWSGIServer('test')
|
|
mock_app = mock.Mock()
|
|
with mock.patch.object(self.server, '_launch') as launcher:
|
|
self.server.start(mock_app, '/the/path', workers=5, backlog=128)
|
|
self.eventlet.assert_has_calls([
|
|
mock.call.listen(
|
|
'/the/path',
|
|
family=socket.AF_UNIX,
|
|
backlog=128
|
|
)]
|
|
)
|
|
launcher.assert_called_once_with(mock_app, workers=5)
|
|
|
|
def test_run(self):
|
|
self.server = utils.UnixDomainWSGIServer('test')
|
|
self.server._run('app', 'sock')
|
|
|
|
self.eventlet.wsgi.server.assert_called_once_with(
|
|
'sock',
|
|
'app',
|
|
protocol=utils.UnixDomainHttpProtocol,
|
|
log=mock.ANY,
|
|
log_format=cfg.CONF.wsgi_log_format,
|
|
max_size=self.server.num_threads
|
|
)
|
|
|
|
def test_num_threads(self):
|
|
num_threads = 8
|
|
self.server = utils.UnixDomainWSGIServer('test',
|
|
num_threads=num_threads)
|
|
self.server._run('app', 'sock')
|
|
|
|
self.eventlet.wsgi.server.assert_called_once_with(
|
|
'sock',
|
|
'app',
|
|
protocol=utils.UnixDomainHttpProtocol,
|
|
log=mock.ANY,
|
|
log_format=cfg.CONF.wsgi_log_format,
|
|
max_size=num_threads
|
|
)
|