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Allow using AWS_QUERYSTRING_AUTH & AWS_S3_CUSTOM_DOMAIN at the same time #839

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13 changes: 13 additions & 0 deletions storages/backends/s3boto3.py
Original file line number Diff line number Diff line change
Expand Up @@ -573,6 +573,19 @@ def url(self, name, parameters=None, expire=None, http_method=None):
params['Key'] = name
url = self.bucket.meta.client.generate_presigned_url('get_object', Params=params,
ExpiresIn=expire, HttpMethod=http_method)

if self.custom_domain:
# Key parameter can't be empty. Use "/" and remove it later.
params['Key'] = '/'
root_url_signed = self.bucket.meta.client.generate_presigned_url('get_object',
Params=params,
ExpiresIn=expire)
# Remove signing parameter and previouly added key "/".
root_url = self._strip_signing_parameters(root_url_signed)[:-1]
# Replace bucket domain with custom domain.
custom_url = "{}//{}/".format(self.url_protocol, self.custom_domain)
url = url.replace(root_url, custom_url)

if self.querystring_auth:
return url
return self._strip_signing_parameters(url)
Expand Down