xForwardedProto  = http.CanonicalHeaderKey("X-Forwarded-Proto")
	xForwardedScheme = http.CanonicalHeaderKey("X-Forwarded-Scheme")
	xRealIP          = http.CanonicalHeaderKey("X-Real-IP")
)

var (
	// RFC7239 defines a new "Forwarded: " header designed to replace the
	// existing use of X-Forwarded-* headers.
	// e.g. Forwarded: for=192.0.2.60;proto=https;by=203.0.113.43
	forwarded = http.CanonicalHeaderKey("Forwarded")

)

// Parse parses s as single-key KMS. The given string
// is expected to have the following format:
//
//	<key-id>:<base64-key>
//
// The returned KMS implementation uses the parsed
// key ID and key to derive new DEKs and decrypt ciphertext.
func Parse(s string) (KMS, error) {
	v := strings.SplitN(s, ":", 2)
	if len(v) != 2 {
		return nil, errors.New("kms: invalid master key format")
	}

	keyID, b64Key := v[0], v[1]

		return nil, nil, err
	}
	if GlobalKMS == nil {
		return NewPutObjReader(hr), &ObjectOptions{MaxParity: true}, nil
	}

	// Note: Local variables with names ek, oek, etc are named inline with
	// acronyms defined here -
	// https://github.com/minio/minio/blob/master/docs/security/README.md#acronyms

	// Encrypt json encoded tier configurations
	metadata := make(map[string]string)

	}
	m.SendSeq++

	dst, err := msg.MarshalMsg(dst)
	if err != nil {
		return err
	}
	if msg.Flags&FlagSubroute != 0 {
		if m.subroute == nil {
			return fmt.Errorf("internal error: subroute not defined on client")
		}
		hid := m.subroute.withHandler(msg.Handler)
		before := len(dst)
		dst = append(dst, hid[:]...)
		if debugPrint {

}

// Check if the directive REPLACE is requested.
func isDirectiveReplace(value string) bool {
	return value == replaceDirective
}

// userMetadataKeyPrefixes contains the prefixes of used-defined metadata keys.
// All values stored with a key starting with one of the following prefixes
// must be extracted from the header.
var userMetadataKeyPrefixes = []string{
	"x-amz-meta-",
	"x-minio-meta-",
}

	}
	if u.Credentials.IsTemp() && !u.Credentials.IsServiceAccount() {
		c.iamSTSAccountsMap[key] = u
	} else {
		c.iamUsersMap[key] = u
	}
	c.updatedAt = time.Now()
	return nil
}

// IAMStorageAPI defines an interface for the IAM persistence layer
type IAMStorageAPI interface {
	// The role of the read-write lock is to prevent go routines from
	// concurrently reading and writing the IAM storage. The (r)lock()

// 2. Replication config - is omitted from import as remote target credentials are not available from exported data for security reasons.
// 3. lifecycle config - if transition rules are present, tier name needs to have been defined.
func (a adminAPIHandlers) ImportBucketMetadataHandler(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()

	// Get current object layer instance.

		r.tags = append(r.tags, KeyVal{key, val})
	}
	return r
}

// GetTags - returns the user defined tags
func (r *ReqInfo) GetTags() []KeyVal {
	if r == nil {
		return nil
	}
	r.RLock()
	defer r.RUnlock()
	return append(make([]KeyVal, 0, len(r.tags)), r.tags...)
}

// GetTagsMap - returns the user defined tags in a map structure
func (r *ReqInfo) GetTagsMap() map[string]interface{} {
	if r == nil {

	ETag         string
	Size         int64

	// Owner of the object.
	Owner *Owner `xml:"Owner,omitempty"`

	// The class of storage used to store the object.
	StorageClass string

	// UserMetadata user-defined metadata
	UserMetadata *Metadata `xml:"UserMetadata,omitempty"`
	UserTags     string    `xml:"UserTags,omitempty"`

	Internal *ObjectInternalInfo `xml:"Internal,omitempty"`
}

	if err != nil {
		return err
	}

	var partIDbin [4]byte
	binary.LittleEndian.PutUint32(partIDbin[:], uint32(partID)) // marshal part ID

	mac := hmac.New(sha256.New, objectEncryptionKey) // derive part encryption key from part ID and object key
	mac.Write(partIDbin[:])
	partEncryptionKey := mac.Sum(nil)

	// Limit the reader, so the decryptor doesn't receive bytes
	// from the next part (different DARE stream)