com.liferay.util.CreditCard.java Source code

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Here is the source code for com.liferay.util.CreditCard.java

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/**
 * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.util;

import com.liferay.portal.kernel.util.CalendarFactoryUtil;
import com.liferay.portal.kernel.util.CalendarUtil;
import com.liferay.portal.kernel.util.LocaleUtil;
import com.liferay.portal.kernel.util.StringBundler;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.util.StringUtil;
import com.liferay.portal.kernel.util.TimeZoneUtil;
import com.liferay.portal.kernel.util.Validator;

import java.util.Calendar;

/**
 * @author Brian Wing Shun Chan
 */
public class CreditCard {

    public static String hide(String number) {
        return hide(number, StringPool.STAR);
    }

    public static String hide(String number, String x) {
        if (number == null) {
            return number;
        }

        int numberLen = number.length();

        if (numberLen > 4) {
            StringBundler sb = new StringBundler(numberLen - 3);

            for (int i = 0; i < numberLen - 4; i++) {
                sb.append(x);
            }

            sb.append(number.substring(numberLen - 4, numberLen));

            number = sb.toString();
        }

        return number;
    }

    public static boolean isValidExpirationDate(int expirationMonth, int expirationYear) {

        Calendar calendar = CalendarFactoryUtil.getCalendar(TimeZoneUtil.getDefault(), LocaleUtil.getDefault());

        if (CalendarUtil.isFuture(expirationMonth, expirationYear)) {
            return true;
        } else if ((expirationMonth == calendar.get(Calendar.MONTH))
                && (expirationYear == calendar.get(Calendar.YEAR))) {

            return true;
        }

        return false;
    }

    public static boolean isValidNumber(String number, String type) {
        number = StringUtil.extractDigits(number);

        if (type.equals("visa")) {
            if (!number.startsWith("4")) {
                return false;
            }

            if ((number.length() != 13) && (number.length() != 16)) {
                return false;
            }
        } else if (type.equals("mastercard")) {
            if (!number.startsWith("51") && !number.startsWith("52") && !number.startsWith("53")
                    && !number.startsWith("54") && !number.startsWith("55")) {

                return false;
            }

            if (number.length() != 16) {
                return false;
            }
        } else if (type.equals("discover")) {
            if (!number.startsWith("6011")) {

                return false;
            }

            if (number.length() != 16) {
                return false;
            }
        } else if (type.equals("amex")) {
            if (!number.startsWith("34") && !number.startsWith("35") && !number.startsWith("36")
                    && !number.startsWith("37")) {

                return false;
            }

            if (number.length() != 15) {
                return false;
            }
        }

        return Validator.isLUHN(number);
    }

}