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azureblob: fix directory marker detection after SDK upgrade 

When the SDK was upgraded it started delivering metadata where the
keys were not in lower case as per the old SDK.

Rclone normalises the case of the keys for storage in the Object, but
the directory marker check was being done with the unnormalised keys
as it needs to be done before the Object is created.

This fixes the directory marker check to do a case insensitive compare
of the metadata keys.
This commit is contained in:
Nick Craig-Wood 2022-12-13 10:45:40 +00:00
parent 43bf177ff7
commit 3d291da0f6
1 changed files with 18 additions and 8 deletions
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26
backend/azureblob/azureblob.go
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@ -988,13 +988,18 @@ func (o *Object) updateMetadataWithModTime(modTime time.Time) {
func isDirectoryMarker(size int64, metadata map[string]string, remote string) bool {
// Directory markers are 0 length
if size == 0 {
// Note that metadata with hdi_isfolder = true seems to be a
// defacto standard for marking blobs as directories.
endsWithSlash := strings.HasSuffix(remote, "/")
if endsWithSlash || remote == "" || metadata["hdi_isfolder"] == "true" {
if endsWithSlash || remote == "" {
return true
}
// Note that metadata with hdi_isfolder = true seems to be a
// defacto standard for marking blobs as directories.
// Note also that the metadata hasn't been normalised to lower case yet
for k, v := range metadata {
if strings.EqualFold(k, "hdi_isfolder") && v == "true" {
return true
}
}
}
return false
}
@ -1007,13 +1012,18 @@ func isDirectoryMarker(size int64, metadata map[string]string, remote string) bo
func isDirectoryMarkerP(size int64, metadata map[string]*string, remote string) bool {
// Directory markers are 0 length
if size == 0 {
// Note that metadata with hdi_isfolder = true seems to be a
// defacto standard for marking blobs as directories.
endsWithSlash := strings.HasSuffix(remote, "/")
if endsWithSlash || remote == "" || (metadata["hdi_isfolder"] != nil && *metadata["hdi_isfolder"] == "true") {
if endsWithSlash || remote == "" {
return true
}
// Note that metadata with hdi_isfolder = true seems to be a
// defacto standard for marking blobs as directories.
// Note also that the metadata hasn't been normalised to lower case yet
for k, pv := range metadata {
if strings.EqualFold(k, "hdi_isfolder") && pv != nil && *pv == "true" {
return true
}
}
}
return false
}