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ID4me RelyingParty API prototype

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/*
 * Copyright (C) 2016-2020 OX Software GmbH
 * Developed by Peter Höbel [email protected]
 * See the LICENSE file for licensing conditions
 * SPDX-License-Identifier: MIT
*/

package org.id4me;

import java.util.regex.Pattern;

/**
 * Provides functionality to validate an ID4me identifier.
 * 
 * @author Peter Hoebel
 */
public class Id4meValidator {

	private static final Pattern VALID_EMAIL_ADDRESS_REGEX = Pattern
			.compile("^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,63}$", Pattern.CASE_INSENSITIVE);

	private static final Pattern VALID_DOMAIN_NAME_REGEX = Pattern
			.compile("^((?!-)[_A-Za-z0-9-]{1,63}(? 0) {
			return VALID_EMAIL_ADDRESS_REGEX.matcher(id4me).find();
		} else {
			if (id4me.indexOf(".") > 0)
				return VALID_DOMAIN_NAME_REGEX.matcher(id4me).find();
			else
				return VALID_TOP_LEVEL_DOMAIN_NAME_REGEX.matcher(id4me).find();
		}
	}

}