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S3 Gateway: Check for encryption headers properly (#10309)

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kannappanr 2020-08-22 11:41:49 -07:00 committed by GitHub
parent 0ff246653b
commit d15a5ad4cc
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2 changed files with 14 additions and 1 deletions
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11
cmd/crypto/metadata.go
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@ -65,6 +65,17 @@ func RemoveInternalEntries(metadata map[string]string) {
delete(metadata, S3KMSSealedKey)
}
// IsSourceEncrypted returns true if the source is encrypted
func IsSourceEncrypted(metadata map[string]string) bool {
if _, ok := metadata[SSECAlgorithm]; ok {
return true
}
if _, ok := metadata[SSEHeader]; ok {
return true
}
return false
}
// IsEncrypted returns true if the object metadata indicates
// that it was uploaded using some form of server-side-encryption.
//

4
cmd/object-handlers.go
View file

@ -1021,6 +1021,8 @@ func (api objectAPIHandlers) CopyObjectHandler(w http.ResponseWriter, r *http.Re
rawReader := srcInfo.Reader
pReader := NewPutObjReader(srcInfo.Reader, nil, nil)
// Check if either the source is encrypted or the destination will be encrypted.
objectEncryption := crypto.IsSourceEncrypted(srcInfo.UserDefined) || crypto.IsRequested(r.Header)
var encMetadata = make(map[string]string)
if objectAPI.IsEncryptionSupported() && !isCompressed {
// Encryption parameters not applicable for this object.
@ -1202,7 +1204,7 @@ func (api objectAPIHandlers) CopyObjectHandler(w http.ResponseWriter, r *http.Re
// if encryption is enabled we do not need explicit "REPLACE" metadata to
// be enabled as well - this is to allow for key-rotation.
if !isDirectiveReplace(r.Header.Get(xhttp.AmzMetadataDirective)) && !isDirectiveReplace(r.Header.Get(xhttp.AmzTagDirective)) &&
srcInfo.metadataOnly && !crypto.IsEncrypted(srcInfo.UserDefined) && srcOpts.VersionID == "" {
srcInfo.metadataOnly && !crypto.IsEncrypted(srcInfo.UserDefined) && srcOpts.VersionID == "" && !objectEncryption {
// If x-amz-metadata-directive is not set to REPLACE then we need
// to error out if source and destination are same.
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopyDest), r.URL, guessIsBrowserReq(r))