Dinesh Bhor
0cc94bfd59
If nova list API is called with empty regex pattern like below:
http://<host-ip>/compute/v2.1/servers?name=""
it fails at db layer and returns 500 InternalServerError.
Empty string('') is a valid regex for re.compile [1] so nova-api fails
to catch it at schema layer and it is passed to databse for searching.
Database fails to search it with "REGEXP %(display_name_1)s)" and
'display_name_1' as u'' in sql query which leads to below error:
InternalError: (1139, u"Got error 'empty (sub)expression' from regexp")
This issue is there for every query parameter which is using below
regex parameter types defined in parameter_types.py:
common_query_regex_param
This patch fixes this issue by rejecting the request with 400 if the
provided filter regex is empty string. If user is intending to filter
something, user must pass something to the filter, it cannot be a empty
string.
[1] https://github.com/openstack/nova/blob/16.0.0/nova/api/validation/validators.py#L40
Closes-Bug: #1718877
Change-Id: I3f6fa04dc7267279964e8e5dd2a790b997a40e4e
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OpenStack Nova
==============
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