user, found := strings.CutSuffix(c.User(), "=ldap")
	if found {
		if !globalIAMSys.LDAPConfig.Enabled() {
			return nil, errSFTPLDAPNotEnabled
		}
		return processLDAPAuthentication(key, pass, user)
	}

	user, found = strings.CutSuffix(c.User(), "=svc")
	if found {
		goto internalAuth
	}

	if globalIAMSys.LDAPConfig.Enabled() {

	}
	return s[len(prefix):], true
}

// CutSuffix returns s without the provided ending suffix byte slice
// and reports whether it found the suffix.
// If s doesn't end with suffix, CutSuffix returns s, false.
// If suffix is the empty byte slice, CutSuffix returns s, true.
//
// CutSuffix returns slices of the original slice s, not copies.
func CutSuffix(s, suffix []byte) (before []byte, found bool) {