if !ret.RetainUntilDate.IsZero() && ret.RetainUntilDate.Before(t) {
		return &ret, ErrPastObjectLockRetainDate
	}

	return &ret, nil
}

// IsObjectLockRetentionRequested returns true if object lock retention headers are set.
func IsObjectLockRetentionRequested(h http.Header) bool {
	if _, ok := h[AmzObjectLockMode]; ok {
		return true
	}
	if _, ok := h[AmzObjectLockRetainUntilDate]; ok {
		return true
	}

	var mode objectlock.RetMode
	var retainDate objectlock.RetentionDate
	var legalHold objectlock.ObjectLegalHold

	retentionRequested := objectlock.IsObjectLockRetentionRequested(rq.Header)
	legalHoldRequested := objectlock.IsObjectLockLegalHoldRequested(rq.Header)

	retentionCfg, err := globalBucketObjectLockSys.Get(bucket)
	if err != nil {