moto/moto/s3/urls.py

from __future__ import unicode_literals
from .responses import S3ResponseInstance

url_bases = [
    "https?://s3(.*).amazonaws.com",
    "https?://(?P<bucket_name>[a-zA-Z0-9\-_.]*)\.?s3(.*).amazonaws.com"
]

url_paths = {
    # subdomain bucket
    '{0}/$': S3ResponseInstance.bucket_response,

    # subdomain key of path-based bucket
    '{0}/(?P<key_or_bucket_name>.+)': S3ResponseInstance.ambiguous_response,

    # path-based bucket + key
    '{0}/(?P<bucket_name_path>[a-zA-Z0-9\-_./]+)/(?P<key_name>.+)': S3ResponseInstance.key_response,
}