Use format_inspector from oslo
This removes glance's in-tree format_inspector implementation and makes it use the newly-released oslo_utils' one. We need very few changes for this to work, but this is the summary: - Oslo's safety_check() raises instead of returns false - Oslo uses InspectWrapper which does in-flight detection, which we need to handle just a little differently. - Oslo detects GPT-formatted disks as 'gpt' format, which we need to consider as 'raw' for compatibility reasons. Depends-On: https://review.opendev.org/c/openstack/tempest/+/927395 Change-Id: I7e32d5ae717224b504e06f7fccb854f68c713643
This commit is contained in:
Dan Smith
parent
d8de63a500
commit
0be2737d66
@ -21,11 +21,11 @@ from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_utils import encodeutils
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from oslo_utils import excutils
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from oslo_utils.imageutils import format_inspector
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from taskflow.patterns import linear_flow as lf
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from taskflow import task
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from glance.async_ import utils
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from glance.common import format_inspector
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from glance.i18n import _, _LI
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LOG = logging.getLogger(__name__)
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@ -99,12 +99,11 @@ class _ConvertImage(task.Task):
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# See https://bugs.launchpad.net/nova/+bug/2059809 for details.
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try:
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inspector = format_inspector.detect_file_format(self.src_path)
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if not inspector.safety_check():
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inspector.safety_check()
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except format_inspector.SafetyCheckFailed:
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LOG.error('Image failed %s safety check; aborting conversion',
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source_format)
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raise RuntimeError('Image has disallowed configuration')
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except RuntimeError:
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raise
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except format_inspector.ImageFormatError as e:
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LOG.error('Image claimed to be %s format failed format '
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'inspection: %s', source_format, e)
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@ -113,7 +112,12 @@ class _ConvertImage(task.Task):
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LOG.exception('Unknown error inspecting image format: %s', e)
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raise RuntimeError('Unable to inspect image')
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if str(inspector) == 'iso':
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detected_format = str(inspector)
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if detected_format == 'gpt':
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# FIXME(danms): We need to consider GPT to be raw for compatibility
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detected_format = 'raw'
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if detected_format == 'iso':
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if source_format == 'iso':
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# NOTE(abhishekk): Excluding conversion and preserving image
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# disk_format as `iso` only
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@ -126,7 +130,7 @@ class _ConvertImage(task.Task):
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LOG.error('Image claimed to be %s format but format '
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'inspection found: ISO', source_format)
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raise RuntimeError("Image has disallowed configuration")
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elif str(inspector) != source_format:
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elif detected_format != source_format:
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LOG.error('Image claimed to be %s format failed format '
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'inspection', source_format)
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raise RuntimeError('Image format mismatch')
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File diff suppressed because it is too large
Load Diff
@ -25,9 +25,9 @@ from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_utils import encodeutils
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from oslo_utils import excutils
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from oslo_utils.imageutils import format_inspector
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from glance.common import exception
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from glance.common import format_inspector
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from glance.common import store_utils
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from glance.common import utils
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import glance.domain.proxy
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@ -580,37 +580,55 @@ class ImageProxy(glance.domain.proxy.Image):
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img_signature_key_type=key_type
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)
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if not self.image.virtual_size:
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inspector = format_inspector.get_inspector(self.image.disk_format)
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else:
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# No need to do this again
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inspector = None
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if inspector and self.image.container_format == 'bare':
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fmt = inspector()
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data = format_inspector.InfoWrapper(data, fmt)
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LOG.debug('Enabling in-flight format inspection for %s', fmt)
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else:
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fmt = None
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if self.image.container_format == 'bare':
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# FIXME(danms): We do not pass an expected_format here because
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# we do not (currently) want to interrupt the data pipeline if
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# the format does not match.
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data = format_inspector.InspectWrapper(data)
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LOG.debug('Enabling in-flight format inspection for %s',
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self.image.disk_format)
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self._upload_to_store(data, verifier, backend, size)
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virtual_size = 0
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if fmt and fmt.format_match:
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try:
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virtual_size = fmt.virtual_size
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data.close()
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except AttributeError:
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# We did not get a closeable or file-like object as data and/or
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# did not wrap it because of container_format
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pass
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virtual_size = 0
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try:
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inspector = data.format
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format = str(inspector)
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# format_inspector detects GPT, which we need to treat as raw for
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# compatibility reasons
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if format == 'gpt':
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format = 'raw'
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if format == self.image.disk_format:
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virtual_size = inspector.virtual_size
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LOG.info('Image format matched and virtual size computed: %i',
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virtual_size)
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except Exception as e:
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LOG.error(_LE('Unable to determine virtual_size because: %s'),
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e)
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elif fmt:
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else:
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LOG.info('Image declared as %s but detected as %s, '
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'not updating virtual_size',
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self.image.disk_format, inspector)
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except AttributeError:
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# We must not have wrapped this for inspection because of
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# container_format
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pass
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except format_inspector.ImageFormatError:
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# No format matched!
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# FIXME(danms): This should be an error in the future for most
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# cases
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LOG.warning('Image format %s did not match; '
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'unable to calculate virtual size',
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self.image.disk_format)
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except Exception as e:
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LOG.error(_LE('Unable to determine virtual_size because: %s'), e)
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if virtual_size:
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self.image.virtual_size = fmt.virtual_size
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self.image.virtual_size = virtual_size
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if set_active and self.image.status != 'active':
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self.image.status = 'active'
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@ -21,11 +21,11 @@ from unittest import mock
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import glance_store
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from oslo_concurrency import processutils
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from oslo_config import cfg
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from oslo_utils.imageutils import format_inspector
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import glance.async_.flows.api_image_import as import_flow
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import glance.async_.flows.plugins.image_conversion as image_conversion
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from glance.async_ import utils as async_utils
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from glance.common import format_inspector
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from glance.common import utils
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from glance import domain
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from glance import gateway
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@ -97,8 +97,8 @@ class TestConvertImageTask(test_utils.BaseTestCase):
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self.task.task_id)
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self.detect_file_format_mock = mock.MagicMock()
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self.useFixture(fixtures.MockPatch('glance.common.format_inspector.'
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'detect_file_format',
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self.useFixture(fixtures.MockPatch(
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'oslo_utils.imageutils.format_inspector.detect_file_format',
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self.detect_file_format_mock))
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@mock.patch.object(os, 'stat')
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@ -126,7 +126,6 @@ class TestConvertImageTask(test_utils.BaseTestCase):
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'virtual-size': 456}
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inspector = self.detect_file_format_mock.return_value
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inspector.__str__.return_value = 'raw'
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inspector.safety_check.return_value = True
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image_convert.execute('file:///test/path.raw')
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# NOTE(hemanthm): Asserting that the source format is passed
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@ -164,7 +163,6 @@ class TestConvertImageTask(test_utils.BaseTestCase):
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self.img_repo.get.return_value = image
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inspector = self.detect_file_format_mock.return_value
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inspector.__str__.return_value = 'iso'
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inspector.safety_check.return_value = True
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image_convert.execute('file:///test/path.iso')
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self.assertEqual(fmt, image.disk_format)
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@ -206,7 +204,6 @@ class TestConvertImageTask(test_utils.BaseTestCase):
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with mock.patch.object(processutils, 'execute') as exc_mock:
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inspector = self.detect_file_format_mock.return_value
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inspector.__str__.return_value = 'qcow2'
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inspector.safety_check.return_value = True
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exc_mock.side_effect = OSError('fail')
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self.assertRaises(OSError,
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convert.execute, 'file:///test/path.raw')
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@ -227,7 +224,6 @@ class TestConvertImageTask(test_utils.BaseTestCase):
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exc_mock.return_value = '', 'some error'
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inspector = self.detect_file_format_mock.return_value
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inspector.__str__.return_value = 'qcow2'
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inspector.safety_check.return_value = True
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self.assertRaises(RuntimeError,
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convert.execute, 'file:///test/path.raw')
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exc_mock.assert_called_once_with(
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@ -249,7 +245,6 @@ class TestConvertImageTask(test_utils.BaseTestCase):
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with mock.patch.object(processutils, 'execute') as exc_mock:
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inspector = self.detect_file_format_mock.return_value
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inspector.__str__.return_value = 'qcow2'
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inspector.safety_check.return_value = True
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exc_mock.return_value = json.dumps(data), ''
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e = self.assertRaises(RuntimeError,
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convert.execute, 'file:///test/path.qcow')
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@ -269,7 +264,6 @@ class TestConvertImageTask(test_utils.BaseTestCase):
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exc_mock.return_value = json.dumps(data), ''
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inspector = self.detect_file_format_mock.return_value
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inspector.__str__.return_value = 'qcow2'
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inspector.safety_check.return_value = True
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e = self.assertRaises(RuntimeError,
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convert.execute, 'file:///test/path.qcow')
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self.assertEqual('QCOW images with data-file set are not allowed',
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@ -284,7 +278,8 @@ class TestConvertImageTask(test_utils.BaseTestCase):
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def test_image_convert_fails_inspection_safety_check(self):
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convert = self._setup_image_convert_info_fail()
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inspector = self.detect_file_format_mock.return_value
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inspector.safety_check.return_value = False
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inspector.safety_check.side_effect = (
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format_inspector.SafetyCheckFailed({}))
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self.assertRaisesRegex(RuntimeError,
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'Image has disallowed configuration',
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convert.execute, 'file:///test/path.qcow')
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@ -315,7 +310,6 @@ class TestConvertImageTask(test_utils.BaseTestCase):
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with mock.patch.object(processutils, 'execute') as exc_mock:
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inspector = self.detect_file_format_mock.return_value
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inspector.__str__.return_value = 'vmdk'
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inspector.safety_check.return_value = True
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exc_mock.return_value = json.dumps(data), ''
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convert.execute('file:///test/path.vmdk')
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@ -347,7 +341,6 @@ class TestConvertImageTask(test_utils.BaseTestCase):
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with mock.patch.object(processutils, 'execute') as exc_mock:
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inspector = self.detect_file_format_mock.return_value
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inspector.__str__.return_value = 'raw'
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inspector.safety_check.return_value = True
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exc_mock.side_effect = [('{"format":"raw"}', ''),
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OSError('convert_fail')]
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self.assertRaises(OSError,
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@ -373,7 +366,6 @@ class TestConvertImageTask(test_utils.BaseTestCase):
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('', 'some error')]
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inspector = self.detect_file_format_mock.return_value
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inspector.__str__.return_value = 'raw'
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inspector.safety_check.return_value = True
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self.assertRaises(RuntimeError,
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convert.execute, 'file:///test/path.raw')
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exc_mock.assert_has_calls(
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@ -396,7 +388,6 @@ class TestConvertImageTask(test_utils.BaseTestCase):
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exc_mock.return_value = ('{}', '')
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inspector = self.detect_file_format_mock.return_value
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inspector.__str__.return_value = 'qcow2'
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inspector.safety_check.return_value = True
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exc = self.assertRaises(RuntimeError,
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convert.execute, 'file:///test/path.raw')
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self.assertIn('Image metadata disagrees about format', str(exc))
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@ -429,7 +420,6 @@ class TestConvertImageTask(test_utils.BaseTestCase):
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'{"format": "qcow2", "virtual-size": 123}', '')
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inspector = self.detect_file_format_mock.return_value
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inspector.__str__.return_value = 'qcow2'
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inspector.safety_check.return_value = True
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convert.execute('file:///test/path.qcow')
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# Make sure we only called qemu-img for inspection, not conversion
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exc_mock.assert_called_once_with(
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@ -1,648 +0,0 @@
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# Copyright 2020 Red Hat, Inc
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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 io
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import os
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import re
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import struct
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import subprocess
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import tempfile
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from unittest import mock
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from oslo_utils import units
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from glance.common import format_inspector
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from glance.tests import utils as test_utils
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TEST_IMAGE_PREFIX = 'glance-unittest-formatinspector-'
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def get_size_from_qemu_img(filename):
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output = subprocess.check_output('qemu-img info "%s"' % filename,
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shell=True)
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for line in output.split(b'\n'):
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m = re.search(b'^virtual size: .* .([0-9]+) bytes', line.strip())
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if m:
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return int(m.group(1))
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raise Exception('Could not find virtual size with qemu-img')
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class TestFormatInspectors(test_utils.BaseTestCase):
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def setUp(self):
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super(TestFormatInspectors, self).setUp()
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self._created_files = []
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def tearDown(self):
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super(TestFormatInspectors, self).tearDown()
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for fn in self._created_files:
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try:
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os.remove(fn)
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except Exception:
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pass
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def _create_iso(self, image_size, subformat='9660'):
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"""Create an ISO file of the given size.
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:param image_size: The size of the image to create in bytes
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:param subformat: The subformat to use, if any
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"""
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# these tests depend on mkisofs
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# being installed and in the path,
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# if it is not installed, skip
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try:
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subprocess.check_output('mkisofs --version', shell=True)
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except Exception:
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self.skipTest('mkisofs not installed')
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size = image_size // units.Mi
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base_cmd = "mkisofs"
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if subformat == 'udf':
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# depending on the distribution mkisofs may not support udf
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# and may be provided by genisoimage instead. As a result we
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# need to check if the command supports udf via help
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# instead of checking the installed version.
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# mkisofs --help outputs to stderr so we need to
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# redirect it to stdout to use grep.
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try:
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subprocess.check_output(
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'mkisofs --help 2>&1 | grep udf', shell=True)
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except Exception:
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self.skipTest('mkisofs does not support udf format')
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base_cmd += " -udf"
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prefix = TEST_IMAGE_PREFIX
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prefix += '-%s-' % subformat
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fn = tempfile.mktemp(prefix=prefix, suffix='.iso')
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self._created_files.append(fn)
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subprocess.check_output(
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'dd if=/dev/zero of=%s bs=1M count=%i' % (fn, size),
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shell=True)
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subprocess.check_output(
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'%s -V "TEST" -o %s %s' % (base_cmd, fn, fn),
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shell=True)
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return fn
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def _generate_bad_iso(self):
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# we want to emulate a malicious user who uploads a an
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# ISO file has a qcow2 header in the system area
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# of the ISO file
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# we will create a qcow2 image and an ISO file
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# and then copy the qcow2 header to the ISO file
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# e.g.
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# mkisofs -o orig.iso /etc/resolv.conf
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# qemu-img create orig.qcow2 -f qcow2 64M
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# dd if=orig.qcow2 of=outcome bs=32K count=1
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# dd if=orig.iso of=outcome bs=32K skip=1 seek=1
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qcow = self._create_img('qcow2', 10 * units.Mi)
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iso = self._create_iso(64 * units.Mi, subformat='9660')
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# first ensure the files are valid
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iso_fmt = self._test_format_at_block_size('iso', iso, 4 * units.Ki)
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self.assertTrue(iso_fmt.format_match)
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qcow_fmt = self._test_format_at_block_size('qcow2', qcow, 4 * units.Ki)
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self.assertTrue(qcow_fmt.format_match)
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# now copy the qcow2 header to an ISO file
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prefix = TEST_IMAGE_PREFIX
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prefix += '-bad-'
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fn = tempfile.mktemp(prefix=prefix, suffix='.iso')
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self._created_files.append(fn)
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subprocess.check_output(
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'dd if=%s of=%s bs=32K count=1' % (qcow, fn),
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shell=True)
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subprocess.check_output(
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'dd if=%s of=%s bs=32K skip=1 seek=1' % (iso, fn),
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shell=True)
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return qcow, iso, fn
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def _create_img(self, fmt, size, subformat=None, options=None,
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backing_file=None):
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"""Create an image file of the given format and size.
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:param fmt: The format to create
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:param size: The size of the image to create in bytes
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:param subformat: The subformat to use, if any
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:param options: A dictionary of options to pass to the format
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:param backing_file: The backing file to use, if any
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"""
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if fmt == 'iso':
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return self._create_iso(size, subformat)
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# these tests depend on qemu-img
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# being installed and in the path,
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# if it is not installed, skip
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try:
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subprocess.check_output('qemu-img --version', shell=True)
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except Exception:
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self.skipTest('qemu-img not installed')
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if fmt == 'vhd':
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# QEMU calls the vhd format vpc
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fmt = 'vpc'
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if options is None:
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options = {}
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opt = ''
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prefix = TEST_IMAGE_PREFIX
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||||
|
||||
if subformat:
|
||||
options['subformat'] = subformat
|
||||
prefix += subformat + '-'
|
||||
|
||||
if options:
|
||||
opt += '-o ' + ','.join('%s=%s' % (k, v)
|
||||
for k, v in options.items())
|
||||
|
||||
if backing_file is not None:
|
||||
opt += ' -b %s -F raw' % backing_file
|
||||
|
||||
fn = tempfile.mktemp(prefix=prefix,
|
||||
suffix='.%s' % fmt)
|
||||
self._created_files.append(fn)
|
||||
subprocess.check_output(
|
||||
'qemu-img create -f %s %s %s %i' % (fmt, opt, fn, size),
|
||||
shell=True)
|
||||
return fn
|
||||
|
||||
def _create_allocated_vmdk(self, size_mb, subformat=None):
|
||||
# We need a "big" VMDK file to exercise some parts of the code of the
|
||||
# format_inspector. A way to create one is to first create an empty
|
||||
# file, and then to convert it with the -S 0 option.
|
||||
|
||||
if subformat is None:
|
||||
# Matches qemu-img default, see `qemu-img convert -O vmdk -o help`
|
||||
subformat = 'monolithicSparse'
|
||||
|
||||
prefix = TEST_IMAGE_PREFIX
|
||||
prefix += '-%s-' % subformat
|
||||
fn = tempfile.mktemp(prefix=prefix, suffix='.vmdk')
|
||||
self._created_files.append(fn)
|
||||
raw = tempfile.mktemp(prefix=prefix, suffix='.raw')
|
||||
self._created_files.append(raw)
|
||||
|
||||
# Create a file with pseudo-random data, otherwise it will get
|
||||
# compressed in the streamOptimized format
|
||||
subprocess.check_output(
|
||||
'dd if=/dev/urandom of=%s bs=1M count=%i' % (raw, size_mb),
|
||||
shell=True)
|
||||
|
||||
# Convert it to VMDK
|
||||
subprocess.check_output(
|
||||
'qemu-img convert -f raw -O vmdk -o subformat=%s -S 0 %s %s' % (
|
||||
subformat, raw, fn),
|
||||
shell=True)
|
||||
return fn
|
||||
|
||||
def _test_format_at_block_size(self, format_name, img, block_size):
|
||||
fmt = format_inspector.get_inspector(format_name)()
|
||||
self.assertIsNotNone(fmt,
|
||||
'Did not get format inspector for %s' % (
|
||||
format_name))
|
||||
wrapper = format_inspector.InfoWrapper(open(img, 'rb'), fmt)
|
||||
|
||||
while True:
|
||||
chunk = wrapper.read(block_size)
|
||||
if not chunk:
|
||||
break
|
||||
|
||||
wrapper.close()
|
||||
return fmt
|
||||
|
||||
def _test_format_at_image_size(self, format_name, image_size,
|
||||
subformat=None):
|
||||
"""Test the format inspector for the given format at the
|
||||
given image size.
|
||||
:param format_name: The format to test
|
||||
:param image_size: The size of the image to create in bytes
|
||||
:param subformat: The subformat to use, if any
|
||||
"""
|
||||
img = self._create_img(format_name, image_size, subformat=subformat)
|
||||
|
||||
# Some formats have internal alignment restrictions making this not
|
||||
# always exactly like image_size, so get the real value for comparison
|
||||
virtual_size = get_size_from_qemu_img(img)
|
||||
|
||||
# Read the format in various sizes, some of which will read whole
|
||||
# sections in a single read, others will be completely unaligned, etc.
|
||||
block_sizes = [64 * units.Ki, 1 * units.Mi]
|
||||
# ISO images have a 32KB system area at the beginning of the image
|
||||
# as a result reading that in 17 or 512 byte blocks takes too long,
|
||||
# causing the test to fail. The 64KiB block size is enough to read
|
||||
# the system area and header in a single read. the 1MiB block size
|
||||
# adds very little time to the test so we include it.
|
||||
if format_name != 'iso':
|
||||
block_sizes.extend([17, 512])
|
||||
for block_size in block_sizes:
|
||||
fmt = self._test_format_at_block_size(format_name, img, block_size)
|
||||
self.assertTrue(fmt.format_match,
|
||||
'Failed to match %s at size %i block %i' % (
|
||||
format_name, image_size, block_size))
|
||||
self.assertEqual(virtual_size, fmt.virtual_size,
|
||||
('Failed to calculate size for %s at size %i '
|
||||
'block %i') % (format_name, image_size,
|
||||
block_size))
|
||||
memory = sum(fmt.context_info.values())
|
||||
self.assertLess(memory, 512 * units.Ki,
|
||||
'Format used more than 512KiB of memory: %s' % (
|
||||
fmt.context_info))
|
||||
|
||||
def _test_format(self, format_name, subformat=None):
|
||||
# Try a few different image sizes, including some odd and very small
|
||||
# sizes
|
||||
for image_size in (512, 513, 2057, 7):
|
||||
self._test_format_at_image_size(format_name, image_size * units.Mi,
|
||||
subformat=subformat)
|
||||
|
||||
def test_qcow2(self):
|
||||
self._test_format('qcow2')
|
||||
|
||||
def test_iso_9660(self):
|
||||
self._test_format('iso', subformat='9660')
|
||||
|
||||
def test_udf(self):
|
||||
self._test_format('iso', subformat='udf')
|
||||
|
||||
def test_bad_iso_qcow2(self):
|
||||
_, _, fn = self._generate_bad_iso()
|
||||
iso_check = self._test_format_at_block_size('iso', fn, 4 * units.Ki)
|
||||
qcow_check = self._test_format_at_block_size('qcow2', fn, 4 * units.Ki)
|
||||
# this system area of the ISO file is not considered part of the format
|
||||
# the qcow2 header is in the system area of the ISO file
|
||||
# so the ISO file is still valid
|
||||
self.assertTrue(iso_check.format_match)
|
||||
# the qcow2 header is in the system area of the ISO file
|
||||
# but that will be parsed by the qcow2 format inspector
|
||||
# and it will match
|
||||
self.assertTrue(qcow_check.format_match)
|
||||
# if we call format_inspector.detect_file_format it should detect
|
||||
# and raise an exception because both match internally.
|
||||
e = self.assertRaises(
|
||||
format_inspector.ImageFormatError,
|
||||
format_inspector.detect_file_format, fn)
|
||||
self.assertIn('Multiple formats detected', str(e))
|
||||
|
||||
def test_vhd(self):
|
||||
self._test_format('vhd')
|
||||
|
||||
def test_vhdx(self):
|
||||
self._test_format('vhdx')
|
||||
|
||||
def test_vmdk(self):
|
||||
self._test_format('vmdk')
|
||||
|
||||
def test_vmdk_stream_optimized(self):
|
||||
self._test_format('vmdk', 'streamOptimized')
|
||||
|
||||
def test_from_file_reads_minimum(self):
|
||||
img = self._create_img('qcow2', 10 * units.Mi)
|
||||
file_size = os.stat(img).st_size
|
||||
fmt = format_inspector.QcowInspector.from_file(img)
|
||||
# We know everything we need from the first 512 bytes of a QCOW image,
|
||||
# so make sure that we did not read the whole thing when we inspect
|
||||
# a local file.
|
||||
self.assertLess(fmt.actual_size, file_size)
|
||||
|
||||
def qed_supported(self):
|
||||
output = subprocess.check_output('qemu-img create --help', shell=True)
|
||||
return b' qed ' in output
|
||||
|
||||
def test_qed_always_unsafe(self):
|
||||
if not self.qed_supported():
|
||||
raise self.skipException('qed format not supported by qemu-img')
|
||||
|
||||
img = self._create_img('qed', 10 * units.Mi)
|
||||
fmt = format_inspector.get_inspector('qed').from_file(img)
|
||||
self.assertTrue(fmt.format_match)
|
||||
self.assertFalse(fmt.safety_check())
|
||||
|
||||
def _test_vmdk_bad_descriptor_offset(self, subformat=None):
|
||||
format_name = 'vmdk'
|
||||
image_size = 10 * units.Mi
|
||||
descriptorOffsetAddr = 0x1c
|
||||
BAD_ADDRESS = 0x400
|
||||
img = self._create_img(format_name, image_size, subformat=subformat)
|
||||
|
||||
# Corrupt the header
|
||||
fd = open(img, 'r+b')
|
||||
fd.seek(descriptorOffsetAddr)
|
||||
fd.write(struct.pack('<Q', BAD_ADDRESS // 512))
|
||||
fd.close()
|
||||
|
||||
# Read the format in various sizes, some of which will read whole
|
||||
# sections in a single read, others will be completely unaligned, etc.
|
||||
for block_size in (64 * units.Ki, 512, 17, 1 * units.Mi):
|
||||
fmt = self._test_format_at_block_size(format_name, img, block_size)
|
||||
self.assertTrue(fmt.format_match,
|
||||
'Failed to match %s at size %i block %i' % (
|
||||
format_name, image_size, block_size))
|
||||
self.assertEqual(0, fmt.virtual_size,
|
||||
('Calculated a virtual size for a corrupt %s at '
|
||||
'size %i block %i') % (format_name, image_size,
|
||||
block_size))
|
||||
|
||||
def test_vmdk_bad_descriptor_offset(self):
|
||||
self._test_vmdk_bad_descriptor_offset()
|
||||
|
||||
def test_vmdk_bad_descriptor_offset_stream_optimized(self):
|
||||
self._test_vmdk_bad_descriptor_offset(subformat='streamOptimized')
|
||||
|
||||
def _test_vmdk_bad_descriptor_mem_limit(self, subformat=None):
|
||||
format_name = 'vmdk'
|
||||
image_size = 5 * units.Mi
|
||||
virtual_size = 5 * units.Mi
|
||||
descriptorOffsetAddr = 0x1c
|
||||
descriptorSizeAddr = descriptorOffsetAddr + 8
|
||||
twoMBInSectors = (2 << 20) // 512
|
||||
# We need a big VMDK because otherwise we will not have enough data to
|
||||
# fill-up the CaptureRegion.
|
||||
img = self._create_allocated_vmdk(image_size // units.Mi,
|
||||
subformat=subformat)
|
||||
|
||||
# Corrupt the end of descriptor address so it "ends" at 2MB
|
||||
fd = open(img, 'r+b')
|
||||
fd.seek(descriptorSizeAddr)
|
||||
fd.write(struct.pack('<Q', twoMBInSectors))
|
||||
fd.close()
|
||||
|
||||
# Read the format in various sizes, some of which will read whole
|
||||
# sections in a single read, others will be completely unaligned, etc.
|
||||
for block_size in (64 * units.Ki, 512, 17, 1 * units.Mi):
|
||||
fmt = self._test_format_at_block_size(format_name, img, block_size)
|
||||
self.assertTrue(fmt.format_match,
|
||||
'Failed to match %s at size %i block %i' % (
|
||||
format_name, image_size, block_size))
|
||||
self.assertEqual(virtual_size, fmt.virtual_size,
|
||||
('Failed to calculate size for %s at size %i '
|
||||
'block %i') % (format_name, image_size,
|
||||
block_size))
|
||||
memory = sum(fmt.context_info.values())
|
||||
self.assertLess(memory, 1.5 * units.Mi,
|
||||
'Format used more than 1.5MiB of memory: %s' % (
|
||||
fmt.context_info))
|
||||
|
||||
def test_vmdk_bad_descriptor_mem_limit(self):
|
||||
self._test_vmdk_bad_descriptor_mem_limit()
|
||||
|
||||
def test_vmdk_bad_descriptor_mem_limit_stream_optimized(self):
|
||||
self._test_vmdk_bad_descriptor_mem_limit(subformat='streamOptimized')
|
||||
|
||||
def test_qcow2_safety_checks(self):
|
||||
# Create backing and data-file names (and initialize the backing file)
|
||||
backing_fn = tempfile.mktemp(prefix='backing')
|
||||
self._created_files.append(backing_fn)
|
||||
with open(backing_fn, 'w') as f:
|
||||
f.write('foobar')
|
||||
data_fn = tempfile.mktemp(prefix='data')
|
||||
self._created_files.append(data_fn)
|
||||
|
||||
# A qcow with no backing or data file is safe
|
||||
fn = self._create_img('qcow2', 5 * units.Mi, None)
|
||||
inspector = format_inspector.QcowInspector.from_file(fn)
|
||||
self.assertTrue(inspector.safety_check())
|
||||
|
||||
# A backing file makes it unsafe
|
||||
fn = self._create_img('qcow2', 5 * units.Mi, None,
|
||||
backing_file=backing_fn)
|
||||
inspector = format_inspector.QcowInspector.from_file(fn)
|
||||
self.assertFalse(inspector.safety_check())
|
||||
|
||||
# A data-file makes it unsafe
|
||||
fn = self._create_img('qcow2', 5 * units.Mi,
|
||||
options={'data_file': data_fn,
|
||||
'data_file_raw': 'on'})
|
||||
inspector = format_inspector.QcowInspector.from_file(fn)
|
||||
self.assertFalse(inspector.safety_check())
|
||||
|
||||
# Trying to load a non-QCOW file is an error
|
||||
self.assertRaises(format_inspector.ImageFormatError,
|
||||
format_inspector.QcowInspector.from_file,
|
||||
backing_fn)
|
||||
|
||||
def test_qcow2_feature_flag_checks(self):
|
||||
data = bytearray(512)
|
||||
data[0:4] = b'QFI\xFB'
|
||||
inspector = format_inspector.QcowInspector()
|
||||
inspector.region('header').data = data
|
||||
|
||||
# All zeros, no feature flags - all good
|
||||
self.assertFalse(inspector.has_unknown_features)
|
||||
|
||||
# A feature flag set in the first byte (highest-order) is not
|
||||
# something we know about, so fail.
|
||||
data[0x48] = 0x01
|
||||
self.assertTrue(inspector.has_unknown_features)
|
||||
|
||||
# The first bit in the last byte (lowest-order) is known (the dirty
|
||||
# bit) so that should pass
|
||||
data[0x48] = 0x00
|
||||
data[0x4F] = 0x01
|
||||
self.assertFalse(inspector.has_unknown_features)
|
||||
|
||||
# Currently (as of 2024), the high-order feature flag bit in the low-
|
||||
# order byte is not assigned, so make sure we reject it.
|
||||
data[0x4F] = 0x80
|
||||
self.assertTrue(inspector.has_unknown_features)
|
||||
|
||||
def test_vdi(self):
|
||||
self._test_format('vdi')
|
||||
|
||||
def _test_format_with_invalid_data(self, format_name):
|
||||
fmt = format_inspector.get_inspector(format_name)()
|
||||
wrapper = format_inspector.InfoWrapper(open(__file__, 'rb'), fmt)
|
||||
while True:
|
||||
chunk = wrapper.read(32)
|
||||
if not chunk:
|
||||
break
|
||||
|
||||
wrapper.close()
|
||||
self.assertFalse(fmt.format_match)
|
||||
self.assertEqual(0, fmt.virtual_size)
|
||||
memory = sum(fmt.context_info.values())
|
||||
self.assertLess(memory, 512 * units.Ki,
|
||||
'Format used more than 512KiB of memory: %s' % (
|
||||
fmt.context_info))
|
||||
|
||||
def test_qcow2_invalid(self):
|
||||
self._test_format_with_invalid_data('qcow2')
|
||||
|
||||
def test_vhd_invalid(self):
|
||||
self._test_format_with_invalid_data('vhd')
|
||||
|
||||
def test_vhdx_invalid(self):
|
||||
self._test_format_with_invalid_data('vhdx')
|
||||
|
||||
def test_vmdk_invalid(self):
|
||||
self._test_format_with_invalid_data('vmdk')
|
||||
|
||||
def test_vdi_invalid(self):
|
||||
self._test_format_with_invalid_data('vdi')
|
||||
|
||||
def test_vmdk_invalid_type(self):
|
||||
fmt = format_inspector.get_inspector('vmdk')()
|
||||
wrapper = format_inspector.InfoWrapper(open(__file__, 'rb'), fmt)
|
||||
while True:
|
||||
chunk = wrapper.read(32)
|
||||
if not chunk:
|
||||
break
|
||||
|
||||
wrapper.close()
|
||||
|
||||
fake_rgn = mock.MagicMock()
|
||||
fake_rgn.complete = True
|
||||
fake_rgn.data = b'foocreateType="someunknownformat"bar'
|
||||
|
||||
with mock.patch.object(fmt, 'has_region', return_value=True):
|
||||
with mock.patch.object(fmt, 'region', return_value=fake_rgn):
|
||||
self.assertEqual(0, fmt.virtual_size)
|
||||
|
||||
|
||||
class TestFormatInspectorInfra(test_utils.BaseTestCase):
|
||||
def _test_capture_region_bs(self, bs):
|
||||
data = b''.join(chr(x).encode() for x in range(ord('A'), ord('z')))
|
||||
|
||||
regions = [
|
||||
format_inspector.CaptureRegion(3, 9),
|
||||
format_inspector.CaptureRegion(0, 256),
|
||||
format_inspector.CaptureRegion(32, 8),
|
||||
]
|
||||
|
||||
for region in regions:
|
||||
# None of them should be complete yet
|
||||
self.assertFalse(region.complete)
|
||||
|
||||
pos = 0
|
||||
for i in range(0, len(data), bs):
|
||||
chunk = data[i:i + bs]
|
||||
pos += len(chunk)
|
||||
for region in regions:
|
||||
region.capture(chunk, pos)
|
||||
|
||||
self.assertEqual(data[3:12], regions[0].data)
|
||||
self.assertEqual(data[0:256], regions[1].data)
|
||||
self.assertEqual(data[32:40], regions[2].data)
|
||||
|
||||
# The small regions should be complete
|
||||
self.assertTrue(regions[0].complete)
|
||||
self.assertTrue(regions[2].complete)
|
||||
|
||||
# This region extended past the available data, so not complete
|
||||
self.assertFalse(regions[1].complete)
|
||||
|
||||
def test_capture_region(self):
|
||||
for block_size in (1, 3, 7, 13, 32, 64):
|
||||
self._test_capture_region_bs(block_size)
|
||||
|
||||
def _get_wrapper(self, data):
|
||||
source = io.BytesIO(data)
|
||||
fake_fmt = mock.create_autospec(format_inspector.get_inspector('raw'))
|
||||
return format_inspector.InfoWrapper(source, fake_fmt)
|
||||
|
||||
def test_info_wrapper_file_like(self):
|
||||
data = b''.join(chr(x).encode() for x in range(ord('A'), ord('z')))
|
||||
wrapper = self._get_wrapper(data)
|
||||
|
||||
read_data = b''
|
||||
while True:
|
||||
chunk = wrapper.read(8)
|
||||
if not chunk:
|
||||
break
|
||||
read_data += chunk
|
||||
|
||||
self.assertEqual(data, read_data)
|
||||
|
||||
def test_info_wrapper_iter_like(self):
|
||||
data = b''.join(chr(x).encode() for x in range(ord('A'), ord('z')))
|
||||
wrapper = self._get_wrapper(data)
|
||||
|
||||
read_data = b''
|
||||
for chunk in wrapper:
|
||||
read_data += chunk
|
||||
|
||||
self.assertEqual(data, read_data)
|
||||
|
||||
def test_info_wrapper_file_like_eats_error(self):
|
||||
wrapper = self._get_wrapper(b'123456')
|
||||
wrapper._format.eat_chunk.side_effect = Exception('fail')
|
||||
|
||||
data = b''
|
||||
while True:
|
||||
chunk = wrapper.read(3)
|
||||
if not chunk:
|
||||
break
|
||||
data += chunk
|
||||
|
||||
# Make sure we got all the data despite the error
|
||||
self.assertEqual(b'123456', data)
|
||||
|
||||
# Make sure we only called this once and never again after
|
||||
# the error was raised
|
||||
wrapper._format.eat_chunk.assert_called_once_with(b'123')
|
||||
|
||||
def test_info_wrapper_iter_like_eats_error(self):
|
||||
fake_fmt = mock.create_autospec(format_inspector.get_inspector('raw'))
|
||||
wrapper = format_inspector.InfoWrapper(iter([b'123', b'456']),
|
||||
fake_fmt)
|
||||
fake_fmt.eat_chunk.side_effect = Exception('fail')
|
||||
|
||||
data = b''
|
||||
for chunk in wrapper:
|
||||
data += chunk
|
||||
|
||||
# Make sure we got all the data despite the error
|
||||
self.assertEqual(b'123456', data)
|
||||
|
||||
# Make sure we only called this once and never again after
|
||||
# the error was raised
|
||||
fake_fmt.eat_chunk.assert_called_once_with(b'123')
|
||||
|
||||
def test_get_inspector(self):
|
||||
self.assertEqual(format_inspector.QcowInspector,
|
||||
format_inspector.get_inspector('qcow2'))
|
||||
self.assertIsNone(format_inspector.get_inspector('foo'))
|
||||
|
||||
|
||||
class TestFormatInspectorsTargeted(test_utils.BaseTestCase):
|
||||
def _make_vhd_meta(self, guid_raw, item_length):
|
||||
# Meta region header, padded to 32 bytes
|
||||
data = struct.pack('<8sHH', b'metadata', 0, 1)
|
||||
data += b'0' * 20
|
||||
|
||||
# Metadata table entry, 16-byte GUID, 12-byte information,
|
||||
# padded to 32-bytes
|
||||
data += guid_raw
|
||||
data += struct.pack('<III', 256, item_length, 0)
|
||||
data += b'0' * 6
|
||||
|
||||
return data
|
||||
|
||||
def test_vhd_table_over_limit(self):
|
||||
ins = format_inspector.VHDXInspector()
|
||||
meta = format_inspector.CaptureRegion(0, 0)
|
||||
desired = b'012345678ABCDEF0'
|
||||
# This is a poorly-crafted image that specifies a larger table size
|
||||
# than is allowed
|
||||
meta.data = self._make_vhd_meta(desired, 33 * 2048)
|
||||
ins.new_region('metadata', meta)
|
||||
new_region = ins._find_meta_entry(ins._guid(desired))
|
||||
# Make sure we clamp to our limit of 32 * 2048
|
||||
self.assertEqual(
|
||||
format_inspector.VHDXInspector.VHDX_METADATA_TABLE_MAX_SIZE,
|
||||
new_region.length)
|
||||
|
||||
def test_vhd_table_under_limit(self):
|
||||
ins = format_inspector.VHDXInspector()
|
||||
meta = format_inspector.CaptureRegion(0, 0)
|
||||
desired = b'012345678ABCDEF0'
|
||||
meta.data = self._make_vhd_meta(desired, 16 * 2048)
|
||||
ins.new_region('metadata', meta)
|
||||
new_region = ins._find_meta_entry(ins._guid(desired))
|
||||
# Table size was under the limit, make sure we get it back
|
||||
self.assertEqual(16 * 2048, new_region.length)
|
||||
@ -12,6 +12,8 @@
|
||||
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
# License for the specific language governing permissions and limitations
|
||||
# under the License.
|
||||
import io
|
||||
|
||||
from cryptography import exceptions as crypto_exception
|
||||
from cursive import exception as cursive_exception
|
||||
from cursive import signature_utils
|
||||
@ -117,14 +119,23 @@ class TestStoreMultiBackends(utils.BaseTestCase):
|
||||
image_stub.disk_format = 'iso'
|
||||
image = glance.location.ImageProxy(image_stub, context,
|
||||
self.store_api, self.store_utils)
|
||||
found_data = []
|
||||
|
||||
def consumer(data, _v, _b, _s):
|
||||
found_data.append(data.read(4))
|
||||
|
||||
with mock.patch.object(image, "_upload_to_store") as mloc:
|
||||
image.set_data('YYYY', 4, backend='ceph1')
|
||||
mloc.side_effect = consumer
|
||||
src_data = io.BytesIO(b'YYYY')
|
||||
image.set_data(src_data, 4, backend='ceph1')
|
||||
msig.assert_called_once_with(context=context,
|
||||
img_signature_certificate_uuid='UUID',
|
||||
img_signature_hash_method='METHOD',
|
||||
img_signature='VALID',
|
||||
img_signature_key_type='TYPE')
|
||||
mloc.assert_called_once_with('YYYY', msig.return_value, 'ceph1', 4)
|
||||
mloc.assert_called_once_with(mock.ANY, msig.return_value, 'ceph1',
|
||||
4)
|
||||
self.assertEqual([b'YYYY'], found_data)
|
||||
|
||||
self.assertEqual('active', image.status)
|
||||
|
||||
@ -284,9 +295,11 @@ class TestStoreImage(utils.BaseTestCase):
|
||||
self.assertEqual('active', image.status)
|
||||
self.assertEqual(0, image.virtual_size)
|
||||
|
||||
@mock.patch('glance.common.format_inspector.QcowInspector.virtual_size',
|
||||
@mock.patch('oslo_utils.imageutils.format_inspector.QcowInspector.'
|
||||
'virtual_size',
|
||||
new_callable=mock.PropertyMock)
|
||||
@mock.patch('glance.common.format_inspector.QcowInspector.format_match',
|
||||
@mock.patch('oslo_utils.imageutils.format_inspector.QcowInspector.'
|
||||
'format_match',
|
||||
new_callable=mock.PropertyMock)
|
||||
def test_image_set_data_inspector_virtual_size_failure(self, mock_fm,
|
||||
mock_vs):
|
||||
@ -315,11 +328,12 @@ class TestStoreImage(utils.BaseTestCase):
|
||||
self.assertEqual('active', image.status)
|
||||
self.assertEqual(0, image.virtual_size)
|
||||
|
||||
@mock.patch('glance.common.format_inspector.get_inspector')
|
||||
def test_image_set_data_inspector_not_needed(self, mock_gi):
|
||||
@mock.patch('oslo_utils.imageutils.format_inspector.InspectWrapper')
|
||||
def test_image_set_data_inspector_not_needed(self, mock_inspect):
|
||||
context = glance.context.RequestContext(user=USER1)
|
||||
image_stub = ImageStub(UUID2, status='queued', locations=[])
|
||||
image_stub.virtual_size = 123
|
||||
image_stub.container_format = 'gzip'
|
||||
image_stub.disk_format = 'qcow2'
|
||||
# We are going to pass an iterable data source, so use the
|
||||
# FakeStoreAPIReader that actually reads from that data
|
||||
@ -335,7 +349,7 @@ class TestStoreImage(utils.BaseTestCase):
|
||||
self.assertEqual(123, image.virtual_size)
|
||||
# If the image already had virtual_size set (i.e. we're setting
|
||||
# a new location), we should not re-calculate the value.
|
||||
mock_gi.assert_not_called()
|
||||
mock_inspect.assert_not_called()
|
||||
|
||||
def test_image_set_data_location_metadata(self):
|
||||
context = glance.context.RequestContext(user=USER1)
|
||||
|
||||
@ -13,7 +13,7 @@ oslo.config>=8.1.0 # Apache-2.0
|
||||
oslo.concurrency>=4.5.1 # Apache-2.0
|
||||
oslo.context>=2.22.0 # Apache-2.0
|
||||
oslo.upgradecheck>=1.3.0 # Apache-2.0
|
||||
oslo.utils>=4.7.0 # Apache-2.0
|
||||
oslo.utils>=7.3.0 # Apache-2.0
|
||||
stevedore!=3.0.0,>=1.20.0 # Apache-2.0
|
||||
futurist>=1.2.0 # Apache-2.0
|
||||
taskflow>=4.0.0 # Apache-2.0
|
||||
|
||||
Loading…
Reference in New Issue
Block a user