S3 never lists an empty result for another region: a valid region
other than the endpoint's own gets 400 InvalidArgument, "Requests with
bucket-region specified must be made to the corresponding regional
endpoint", with no ArgumentValue. The gateway is a single regional
endpoint, so it now does the same instead of clearing the listing.
Match the region case-insensitively like S3, and check an empty
bucket-region= too by looking for the query argument itself, since an
empty value is not a valid AWS region either.
ListBuckets ignored bucket-region: a value that is not a region was
accepted, and a region other than the gateway one still listed every
bucket. S3 rejects an invalid value with 400 InvalidArgument, "Argument
value abc is not a valid AWS Region", and lists only the buckets of the
requested region.
Check bucket-region against the AWS region code format, always
accepting the gateway region whatever its name, and return an empty
list for any other region, since every bucket lives in the gateway
region. Enable the REST tests that cover both cases.
Fixes#1923Fixes#1930
dualfroz
upstream