def update(self, req, image_id, tag_value):
image_repo = self.gateway.get_repo(req.context,
authorization_layer=False)
try:
image = image_repo.get(image_id)
api_policy.ImageAPIPolicy(req.context, image,
self.policy).modify_image()
image.tags.add(tag_value)
image_repo.save(image)
except exception.NotFound:
msg = _("Image %s not found.") % image_id
LOG.warning(msg)
raise webob.exc.HTTPNotFound(explanation=msg)
except exception.Forbidden:
msg = _("Not allowed to update tags for image %s.") % image_id
LOG.warning(msg)
raise webob.exc.HTTPForbidden(explanation=msg)
except exception.Invalid as e:
msg = (_("Could not update image: %s") %
encodeutils.exception_to_unicode(e))
LOG.warning(msg)
raise webob.exc.HTTPBadRequest(explanation=msg)
except exception.ImageTagLimitExceeded as e:
msg = (_("Image tag limit exceeded for image %(id)s: %(e)s:") % {
"id": image_id,
"e": encodeutils.exception_to_unicode(e)
})
LOG.warning(msg)
raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg)
def test_add_image(self):
generic_target = {
'project_id': self.context.project_id,
'owner': self.context.project_id,
'visibility': 'private'
}
self.policy = policy.ImageAPIPolicy(self.context, {},
enforcer=self.enforcer)
self.policy.add_image()
self.enforcer.enforce.assert_called_once_with(self.context,
'add_image',
generic_target)
def test_add_image_translates_owner_failure(self):
self.policy = policy.ImageAPIPolicy(self.context, {'owner': 'else'},
enforcer=self.enforcer)
# Make sure add_image works with no exception
self.policy.add_image()
# Make sure we don't get in the way of any other exceptions
self.enforcer.enforce.side_effect = exception.Duplicate
self.assertRaises(exception.Duplicate, self.policy.add_image)
# If the exception is HTTPForbidden and the owner differs,
# make sure we get the proper message translation
self.enforcer.enforce.side_effect = webob.exc.HTTPForbidden('original')
exc = self.assertRaises(webob.exc.HTTPForbidden, self.policy.add_image)
self.assertIn('You are not permitted to create images owned by',
str(exc))
# If the owner does not differ, make sure we get the original reason
self.policy = policy.ImageAPIPolicy(self.context, {},
enforcer=self.enforcer)
exc = self.assertRaises(webob.exc.HTTPForbidden, self.policy.add_image)
self.assertIn('original', str(exc))
def delete(self, req, image_id, tag_value):
image_repo = self.gateway.get_repo(req.context,
authorization_layer=False)
try:
image = image_repo.get(image_id)
api_policy.ImageAPIPolicy(req.context, image,
self.policy).modify_image()
if tag_value not in image.tags:
raise webob.exc.HTTPNotFound()
image.tags.remove(tag_value)
image_repo.save(image)
except exception.NotFound:
msg = _("Image %s not found.") % image_id
LOG.warning(msg)
raise webob.exc.HTTPNotFound(explanation=msg)
except exception.Forbidden:
msg = _("Not allowed to delete tags for image %s.") % image_id
LOG.warning(msg)
raise webob.exc.HTTPForbidden(explanation=msg)
def download(self, req, image_id):
image_repo = self.gateway.get_repo(req.context,
authorization_layer=False)
try:
image = image_repo.get(image_id)
if image.status == 'deactivated' and not req.context.is_admin:
msg = _('The requested image has been deactivated. '
'Image data download is forbidden.')
raise exception.Forbidden(message=msg)
# NOTE(abhishekk): This is the right place to verify whether
# user has permission to download the image or not.
api_pol = api_policy.ImageAPIPolicy(req.context, image,
self.policy)
api_pol.download_image()
except exception.NotFound as e:
raise webob.exc.HTTPNotFound(explanation=e.msg)
except exception.Forbidden as e:
LOG.debug("User not permitted to download image '%s'", image_id)
raise webob.exc.HTTPForbidden(explanation=e.msg)
return image
def test_add_image_falls_back_to_legacy(self):
self.config(enforce_secure_rbac=False)
self.context.is_admin = False
self.policy = policy.ImageAPIPolicy(self.context, {'owner': 'else'},
enforcer=self.enforcer)
self.assertRaises(exception.Forbidden, self.policy.add_image)
# Make sure we're calling the legacy handler if secure_rbac is False
with mock.patch('glance.api.v2.policy.check_admin_or_same_owner') as m:
self.policy.add_image()
m.assert_called_once_with(self.context, {
'project_id': 'else',
'owner': 'else',
'visibility': 'private'
})
# Make sure we are not calling the legacy handler if
# secure_rbac is being used. We won't fail the check because
# our enforcer is a mock, just make sure we don't call that handler.
self.config(enforce_secure_rbac=True)
with mock.patch('glance.api.v2.policy.check_admin_or_same_owner') as m:
self.policy.add_image()
m.assert_not_called()
def _enforce(self, req, image):
"""Authorize an action against our policies"""
api_pol = api_policy.ImageAPIPolicy(req.context, image,
self.policy)
api_pol.download_image()
def setUp(self):
super(APIImagePolicy, self).setUp()
self.image = mock.MagicMock()
self.policy = policy.ImageAPIPolicy(self.context,
self.image,
enforcer=self.enforcer)
def stage(self, req, image_id, data, size):
try:
ks_quota.enforce_image_staging_total(req.context,
req.context.owner)
except exception.LimitExceeded as e:
raise webob.exc.HTTPRequestEntityTooLarge(explanation=str(e),
request=req)
image_repo = self.gateway.get_repo(req.context,
authorization_layer=False)
# NOTE(abhishekk): stage API call does not have its own policy but
# it requires get_image access, this is the right place to check
# whether user has access to image or not
try:
image = image_repo.get(image_id)
except exception.NotFound as e:
raise webob.exc.HTTPNotFound(explanation=e.msg)
api_pol = api_policy.ImageAPIPolicy(req.context,
image,
enforcer=self.policy)
try:
api_pol.modify_image()
except exception.Forbidden as e:
# NOTE(abhishekk): This will throw Forbidden if S-RBAC is not
# enabled
raise webob.exc.HTTPForbidden(explanation=e.msg)
# NOTE(jokke): this is horrible way to do it but as long as
# glance_store is in a shape it is, the only way. Don't hold me
# accountable for it.
# TODO(abhishekk): After removal of backend module from glance_store
# need to change this to use multi_backend module.
def _build_staging_store():
conf = cfg.ConfigOpts()
try:
backend.register_opts(conf)
except cfg.DuplicateOptError:
pass
conf.set_override('filesystem_store_datadir',
CONF.node_staging_uri[7:],
group='glance_store')
staging_store = backend._load_store(conf, 'file')
try:
staging_store.configure()
except AttributeError:
msg = _("'node_staging_uri' is not set correctly. Could not "
"load staging store.")
raise exception.BadStoreUri(message=msg)
return staging_store
# NOTE(abhishekk): Use reserved 'os_glance_staging_store' for staging
# the data, the else part will be removed once multiple backend feature
# is declared as stable.
if CONF.enabled_backends:
staging_store = glance_store.get_store_from_store_identifier(
'os_glance_staging_store')
else:
staging_store = _build_staging_store()
try:
image.status = 'uploading'
image_repo.save(image, from_state='queued')
ks_quota.enforce_image_count_uploading(req.context,
req.context.owner)
try:
uri, size, id, store_info = staging_store.add(
image_id,
utils.LimitingReader(utils.CooperativeReader(data),
CONF.image_size_cap), 0)
image.size = size
except glance_store.Duplicate:
msg = _("The image %s has data on staging") % image_id
raise webob.exc.HTTPConflict(explanation=msg)
# NOTE(danms): Record this worker's
# worker_self_reference_url in the image metadata so we
# know who has the staging data.
self_url = CONF.worker_self_reference_url or CONF.public_endpoint
if self_url:
image.extra_properties['os_glance_stage_host'] = self_url
image_repo.save(image, from_state='uploading')
except exception.NotFound as e:
raise webob.exc.HTTPNotFound(explanation=e.msg)
except glance_store.StorageFull as e:
msg = _("Image storage media "
"is full: %s") % encodeutils.exception_to_unicode(e)
LOG.error(msg)
self._unstage(image_repo, image, staging_store)
raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg,
request=req)
except exception.StorageQuotaFull as e:
msg = _("Image exceeds the storage "
"quota: %s") % encodeutils.exception_to_unicode(e)
LOG.debug(msg)
self._unstage(image_repo, image, staging_store)
raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg,
request=req)
except exception.ImageSizeLimitExceeded as e:
msg = _("The incoming image is "
"too large: %s") % encodeutils.exception_to_unicode(e)
LOG.debug(msg)
self._unstage(image_repo, image, staging_store)
raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg,
request=req)
except exception.LimitExceeded as e:
LOG.debug(str(e))
self._unstage(image_repo, image, staging_store)
raise webob.exc.HTTPRequestEntityTooLarge(explanation=str(e),
request=req)
except glance_store.StorageWriteDenied as e:
msg = _("Insufficient permissions on image "
"storage media: %s") % encodeutils.exception_to_unicode(e)
LOG.error(msg)
self._unstage(image_repo, image, staging_store)
raise webob.exc.HTTPServiceUnavailable(explanation=msg,
request=req)
except exception.InvalidImageStatusTransition as e:
msg = encodeutils.exception_to_unicode(e)
LOG.debug(msg)
raise webob.exc.HTTPConflict(explanation=e.msg, request=req)
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception(
_LE("Failed to stage image data due to "
"internal error"))
self._restore(image_repo, image)
def upload(self, req, image_id, data, size):
try:
ks_quota.enforce_image_size_total(req.context, req.context.owner)
except exception.LimitExceeded as e:
raise webob.exc.HTTPRequestEntityTooLarge(explanation=str(e),
request=req)
backend = None
if CONF.enabled_backends:
backend = req.headers.get('x-image-meta-store',
CONF.glance_store.default_backend)
try:
glance_store.get_store_from_store_identifier(backend)
except glance_store.UnknownScheme as exc:
raise webob.exc.HTTPBadRequest(explanation=exc.msg,
request=req,
content_type='text/plain')
image_repo = self.gateway.get_repo(req.context,
authorization_layer=False)
image = None
refresher = None
cxt = req.context
try:
image = image_repo.get(image_id)
# NOTE(abhishekk): This is the right place to check whether user
# have permission to upload the image and remove the policy check
# later from the policy layer.
api_pol = api_policy.ImageAPIPolicy(req.context, image,
self.policy)
api_pol.upload_image()
image.status = 'saving'
try:
# create a trust if backend is registry
try:
# request user plugin for current token
user_plugin = req.environ.get('keystone.token_auth')
roles = []
# use roles from request environment because they
# are not transformed to lower-case unlike cxt.roles
for role_info in req.environ.get(
'keystone.token_info')['token']['roles']:
roles.append(role_info['name'])
refresher = trust_auth.TokenRefresher(
user_plugin, cxt.project_id, roles)
except Exception as e:
LOG.info(
_LI("Unable to create trust: %s "
"Use the existing user token."),
encodeutils.exception_to_unicode(e))
image_repo.save(image, from_state='queued')
ks_quota.enforce_image_count_uploading(req.context,
req.context.owner)
image.set_data(data, size, backend=backend)
try:
image_repo.save(image, from_state='saving')
except exception.NotAuthenticated:
if refresher is not None:
# request a new token to update an image in database
cxt.auth_token = refresher.refresh_token()
image_repo.save(image, from_state='saving')
else:
raise
try:
# release resources required for re-auth
if refresher is not None:
refresher.release_resources()
except Exception as e:
LOG.info(
_LI("Unable to delete trust %(trust)s: %(msg)s"), {
"trust": refresher.trust_id,
"msg": encodeutils.exception_to_unicode(e)
})
except (glance_store.NotFound, exception.ImageNotFound,
exception.Conflict):
msg = (_("Image %s could not be found after upload. "
"The image may have been deleted during the "
"upload, cleaning up the chunks uploaded.") %
image_id)
LOG.warn(msg)
# NOTE(sridevi): Cleaning up the uploaded chunks.
try:
image.delete()
except exception.ImageNotFound:
# NOTE(sridevi): Ignore this exception
pass
raise webob.exc.HTTPGone(explanation=msg,
request=req,
content_type='text/plain')
except exception.NotAuthenticated:
msg = (_("Authentication error - the token may have "
"expired during file upload. Deleting image data for "
"%s.") % image_id)
LOG.debug(msg)
try:
image.delete()
except exception.NotAuthenticated:
# NOTE: Ignore this exception
pass
raise webob.exc.HTTPUnauthorized(explanation=msg,
request=req,
content_type='text/plain')
except ValueError as e:
LOG.debug("Cannot save data for image %(id)s: %(e)s", {
'id': image_id,
'e': encodeutils.exception_to_unicode(e)
})
self._restore(image_repo, image)
raise webob.exc.HTTPBadRequest(
explanation=encodeutils.exception_to_unicode(e))
except glance_store.StoreAddDisabled:
msg = _("Error in store configuration. Adding images to store "
"is disabled.")
LOG.exception(msg)
self._restore(image_repo, image)
raise webob.exc.HTTPGone(explanation=msg,
request=req,
content_type='text/plain')
except exception.InvalidImageStatusTransition as e:
msg = encodeutils.exception_to_unicode(e)
LOG.exception(msg)
raise webob.exc.HTTPConflict(explanation=e.msg, request=req)
except exception.Forbidden:
msg = ("Not allowed to upload image data for image %s" % image_id)
LOG.debug(msg)
raise webob.exc.HTTPForbidden(explanation=msg, request=req)
except exception.NotFound as e:
raise webob.exc.HTTPNotFound(explanation=e.msg)
except glance_store.StorageFull as e:
msg = _("Image storage media "
"is full: %s") % encodeutils.exception_to_unicode(e)
LOG.error(msg)
self._restore(image_repo, image)
raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg,
request=req)
except exception.StorageQuotaFull as e:
msg = _("Image exceeds the storage "
"quota: %s") % encodeutils.exception_to_unicode(e)
LOG.error(msg)
self._restore(image_repo, image)
raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg,
request=req)
except exception.ImageSizeLimitExceeded as e:
msg = _("The incoming image is "
"too large: %s") % encodeutils.exception_to_unicode(e)
LOG.error(msg)
self._restore(image_repo, image)
raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg,
request=req)
except exception.LimitExceeded as e:
LOG.error(str(e))
self._restore(image_repo, image)
raise webob.exc.HTTPRequestEntityTooLarge(explanation=str(e),
request=req)
except glance_store.StorageWriteDenied as e:
msg = _("Insufficient permissions on image "
"storage media: %s") % encodeutils.exception_to_unicode(e)
LOG.error(msg)
self._restore(image_repo, image)
raise webob.exc.HTTPServiceUnavailable(explanation=msg,
request=req)
except cursive_exception.SignatureVerificationError as e:
msg = (
_LE("Signature verification failed for image %(id)s: %(e)s") %
{
'id': image_id,
'e': encodeutils.exception_to_unicode(e)
})
LOG.error(msg)
self._restore(image_repo, image)
raise webob.exc.HTTPBadRequest(explanation=msg)
except webob.exc.HTTPGone:
with excutils.save_and_reraise_exception():
LOG.error(_LE("Failed to upload image data due to HTTP error"))
except webob.exc.HTTPError:
with excutils.save_and_reraise_exception():
LOG.error(_LE("Failed to upload image data due to HTTP error"))
self._restore(image_repo, image)
except Exception:
with excutils.save_and_reraise_exception():
LOG.error(
_LE("Failed to upload image data due to "
"internal error"))
self._restore(image_repo, image)
