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s3: fix 405 error on HEAD for delete marker with versionId

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When getting an object by specifying a versionId in the request, if the
specified version is a delete marker, it returns 405 (Method Not Allowed),
instead of 404 (Not Found) which would be returned without a versionId. See
https://docs.aws.amazon.com/AmazonS3/latest/userguide/DeleteMarker.html

Before this change, we were only looking for 404 (and not 405) to determine
whether the object exists. This meant that in some circumstances (ex. when
Versioning is enabled for the bucket and we have a non-null X-Amz-Version-Id), we
deemed the object to exist when we should not have.

After this change, 405 (Method Not Allowed) is treated the same as 404 (Not
Found) for the purposes of headObject.

See https://forum.rclone.org/t/bisync-rename-failed-method-not-allowed/45723/13
This commit is contained in:
nielash 2024-06-12 01:00:26 -04:00 committed by Nick Craig-Wood
parent 1aa3a37a28
commit 8470bdf810
1 changed files with 1 additions and 1 deletions
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2
backend/s3/s3.go
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@ -5422,7 +5422,7 @@ func (f *Fs) headObject(ctx context.Context, req *s3.HeadObjectInput) (resp *s3.
})
if err != nil {
if awsErr, ok := err.(awserr.RequestFailure); ok {
if awsErr.StatusCode() == http.StatusNotFound {
if awsErr.StatusCode() == http.StatusNotFound || awsErr.StatusCode() == http.StatusMethodNotAllowed {
return nil, fs.ErrorObjectNotFound
}
}