188 lines
7.9 KiB
Python
188 lines
7.9 KiB
Python
# Copyright (c) 2013 The Johns Hopkins University/Applied Physics Laboratory
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# All Rights Reserved.
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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 binascii
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import copy
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import mock
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import six
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from castellan.common.objects import symmetric_key as key
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from castellan.tests.unit.key_manager import fake
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from os_brick.encryptors import cryptsetup
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from os_brick import exception
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from os_brick.tests.encryptors import test_base
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from oslo_concurrency import processutils as putils
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def fake__get_key(context, passphrase):
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raw = bytes(binascii.unhexlify(passphrase))
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symmetric_key = key.SymmetricKey('AES', len(raw) * 8, raw)
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return symmetric_key
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class CryptsetupEncryptorTestCase(test_base.VolumeEncryptorTestCase):
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@mock.patch('os.path.exists', return_value=False)
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def _create(self, mock_exists):
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return cryptsetup.CryptsetupEncryptor(
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connection_info=self.connection_info,
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root_helper=self.root_helper,
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keymgr=self.keymgr)
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def setUp(self):
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super(CryptsetupEncryptorTestCase, self).setUp()
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self.dev_path = self.connection_info['data']['device_path']
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self.dev_name = 'crypt-%s' % self.dev_path.split('/')[-1]
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self.symlink_path = self.dev_path
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@mock.patch('os_brick.executor.Executor._execute')
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def test__open_volume(self, mock_execute):
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self.encryptor._open_volume("passphrase")
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mock_execute.assert_has_calls([
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mock.call('cryptsetup', 'create', '--key-file=-', self.dev_name,
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self.dev_path, process_input='passphrase',
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run_as_root=True,
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root_helper=self.root_helper,
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check_exit_code=True),
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])
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@mock.patch('os_brick.executor.Executor._execute')
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def test_attach_volume(self, mock_execute):
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fake_key = 'e8b76872e3b04c18b3b6656bbf6f5089'
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self.encryptor._get_key = mock.MagicMock()
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self.encryptor._get_key.return_value = fake__get_key(None, fake_key)
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self.encryptor.attach_volume(None)
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mock_execute.assert_has_calls([
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mock.call('cryptsetup', 'create', '--key-file=-', self.dev_name,
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self.dev_path, process_input=fake_key,
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root_helper=self.root_helper,
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run_as_root=True, check_exit_code=True),
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mock.call('ln', '--symbolic', '--force',
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'/dev/mapper/%s' % self.dev_name, self.symlink_path,
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root_helper=self.root_helper,
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run_as_root=True, check_exit_code=True),
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])
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@mock.patch('os_brick.executor.Executor._execute')
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def test__close_volume(self, mock_execute):
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self.encryptor.detach_volume()
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mock_execute.assert_has_calls([
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mock.call('cryptsetup', 'remove', self.dev_name,
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root_helper=self.root_helper,
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run_as_root=True, check_exit_code=[0, 4]),
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])
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@mock.patch('os_brick.executor.Executor._execute')
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def test_detach_volume(self, mock_execute):
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self.encryptor.detach_volume()
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mock_execute.assert_has_calls([
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mock.call('cryptsetup', 'remove', self.dev_name,
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root_helper=self.root_helper,
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run_as_root=True, check_exit_code=[0, 4]),
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])
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def test_init_volume_encryption_not_supported(self):
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# Tests that creating a CryptsetupEncryptor fails if there is no
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# device_path key.
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type = 'unencryptable'
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data = dict(volume_id='a194699b-aa07-4433-a945-a5d23802043e')
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connection_info = dict(driver_volume_type=type, data=data)
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exc = self.assertRaises(exception.VolumeEncryptionNotSupported,
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cryptsetup.CryptsetupEncryptor,
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root_helper=self.root_helper,
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connection_info=connection_info,
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keymgr=fake.fake_api())
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self.assertIn(type, six.text_type(exc))
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@mock.patch('os_brick.executor.Executor._execute')
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@mock.patch('os.path.exists', return_value=True)
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def test_init_volume_encryption_with_old_name(self, mock_exists,
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mock_execute):
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# If an old name crypt device exists, dev_path should be the old name.
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old_dev_name = self.dev_path.split('/')[-1]
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encryptor = cryptsetup.CryptsetupEncryptor(
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root_helper=self.root_helper,
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connection_info=self.connection_info,
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keymgr=self.keymgr)
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self.assertFalse(encryptor.dev_name.startswith('crypt-'))
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self.assertEqual(old_dev_name, encryptor.dev_name)
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self.assertEqual(self.dev_path, encryptor.dev_path)
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self.assertEqual(self.symlink_path, encryptor.symlink_path)
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mock_exists.assert_called_once_with('/dev/mapper/%s' % old_dev_name)
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mock_execute.assert_called_once_with(
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'cryptsetup', 'status', old_dev_name, run_as_root=True)
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@mock.patch('os_brick.executor.Executor._execute')
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@mock.patch('os.path.exists', side_effect=[False, True])
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def test_init_volume_encryption_with_wwn(self, mock_exists, mock_execute):
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# If an wwn name crypt device exists, dev_path should be based on wwn.
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old_dev_name = self.dev_path.split('/')[-1]
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wwn = 'fake_wwn'
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connection_info = copy.deepcopy(self.connection_info)
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connection_info['data']['multipath_id'] = wwn
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encryptor = cryptsetup.CryptsetupEncryptor(
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root_helper=self.root_helper,
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connection_info=connection_info,
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keymgr=fake.fake_api(),
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execute=mock_execute)
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self.assertFalse(encryptor.dev_name.startswith('crypt-'))
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self.assertEqual(wwn, encryptor.dev_name)
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self.assertEqual(self.dev_path, encryptor.dev_path)
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self.assertEqual(self.symlink_path, encryptor.symlink_path)
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mock_exists.assert_has_calls([
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mock.call('/dev/mapper/%s' % old_dev_name),
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mock.call('/dev/mapper/%s' % wwn)])
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mock_execute.assert_called_once_with(
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'cryptsetup', 'status', wwn, run_as_root=True)
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@mock.patch('os_brick.executor.Executor._execute')
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def test_attach_volume_unmangle_passphrase(self, mock_execute):
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fake_key = '0725230b'
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fake_key_mangled = '72523b'
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self.encryptor._get_key = mock.MagicMock()
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self.encryptor._get_key.return_value = fake__get_key(None, fake_key)
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mock_execute.side_effect = [
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putils.ProcessExecutionError(exit_code=2), # luksOpen
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mock.DEFAULT,
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mock.DEFAULT,
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]
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self.encryptor.attach_volume(None)
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mock_execute.assert_has_calls([
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mock.call('cryptsetup', 'create', '--key-file=-', self.dev_name,
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self.dev_path, process_input=fake_key,
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root_helper=self.root_helper, run_as_root=True,
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check_exit_code=True),
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mock.call('cryptsetup', 'create', '--key-file=-', self.dev_name,
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self.dev_path, process_input=fake_key_mangled,
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root_helper=self.root_helper, run_as_root=True,
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check_exit_code=True),
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mock.call('ln', '--symbolic', '--force',
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'/dev/mapper/%s' % self.dev_name, self.symlink_path,
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root_helper=self.root_helper, run_as_root=True,
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check_exit_code=True),
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])
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self.assertEqual(3, mock_execute.call_count)
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