/*
*
* Copyright (c) 2013 - 2017 Lijun Liao
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
*
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* THE AUTHOR LIJUN LIAO. LIJUN LIAO DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the XiPKI software without
* disclosing the source code of your own applications.
*
* For more information, please contact Lijun Liao at this
* address: lijun.liao@gmail.com
*/
package org.xipki.pki.ca.api.profile;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;
import org.xipki.commons.common.util.ParamUtil;
/**
* @author Lijun Liao
* @since 2.0.0
*/
public class CertValidity implements Comparable<CertValidity> {
public enum Unit {
YEAR("y"),
DAY("d"),
HOUR("h");
private String suffix;
Unit(final String suffix) {
this.suffix = suffix;
}
public String getSuffix() {
return suffix;
}
} // enum Unit
private static final long SECOND = 1000L;
private static final long HOUR = 60L * 60 * SECOND;
private static final long DAY = 24L * HOUR;
private static final TimeZone TIMEZONE_UTC = TimeZone.getTimeZone("UTC");
private final int validity;
private final Unit unit;
public CertValidity(final int validity, final Unit unit) {
this.validity = ParamUtil.requireMin("validity", validity, 1);
this.unit = ParamUtil.requireNonNull("unit", unit);
}
public static CertValidity getInstance(final String validityS) {
ParamUtil.requireNonBlank("validityS", validityS);
final int len = validityS.length();
final char suffix = validityS.charAt(len - 1);
Unit unit;
String numValdityS;
if (suffix == 'y' || suffix == 'Y') {
unit = Unit.YEAR;
numValdityS = validityS.substring(0, len - 1);
} else if (suffix == 'd' || suffix == 'D') {
unit = Unit.DAY;
numValdityS = validityS.substring(0, len - 1);
} else if (suffix == 'h' || suffix == 'H') {
unit = Unit.HOUR;
numValdityS = validityS.substring(0, len - 1);
} else if (suffix >= '0' && suffix <= '9') {
unit = Unit.DAY;
numValdityS = validityS;
} else {
throw new IllegalArgumentException(String.format("invalid validityS: %s", validityS));
}
int validity;
try {
validity = Integer.parseInt(numValdityS);
} catch (NumberFormatException ex) {
throw new IllegalArgumentException(String.format("invalid validityS: %s", validityS));
}
return new CertValidity(validity, unit);
} // method getInstance
public int getValidity() {
return validity;
}
public Unit getUnit() {
return unit;
}
public Date add(final Date referenceDate) {
switch (unit) {
case HOUR:
return new Date(referenceDate.getTime() + HOUR - SECOND);
case DAY:
return new Date(referenceDate.getTime() + DAY - SECOND);
case YEAR:
Calendar cal = Calendar.getInstance(TIMEZONE_UTC);
cal.setTime(referenceDate);
cal.add(Calendar.YEAR, validity);
cal.add(Calendar.SECOND, -1);
int month = cal.get(Calendar.MONTH);
// February
if (month == 1) {
int day = cal.get(Calendar.DAY_OF_MONTH);
if (day > 28) {
int year = cal.get(Calendar.YEAR);
day = isLeapYear(year) ? 29 : 28;
}
}
return cal.getTime();
default:
throw new RuntimeException(String.format(
"should not reach here, unknown CertValidity.Unit %s", unit));
}
} // method add
private int getApproxHours() {
switch (unit) {
case HOUR:
return validity;
case DAY:
return 24 * validity;
case YEAR:
return (365 * validity + validity / 4) * 24;
default:
throw new RuntimeException(String.format(
"should not reach here, unknown CertValidity.Unit %s", unit));
}
}
@Override
public int hashCode() {
return toString().hashCode();
}
@Override
public int compareTo(final CertValidity obj) {
ParamUtil.requireNonNull("obj", obj);
if (unit == obj.unit) {
if (validity == obj.validity) {
return 0;
}
return (validity < obj.validity) ? -1 : 1;
} else {
int thisHours = getApproxHours();
int thatHours = obj.getApproxHours();
if (thisHours == thatHours) {
return 0;
} else {
return (thisHours < thatHours) ? -1 : 1;
}
}
}
@Override
public boolean equals(final Object obj) {
if (!(obj instanceof CertValidity)) {
return false;
}
CertValidity other = (CertValidity) obj;
return unit == other.unit && validity == other.validity;
}
@Override
public String toString() {
switch (unit) {
case HOUR:
return validity + "h";
case DAY:
return validity + "d";
case YEAR:
return validity + "y";
default:
throw new RuntimeException(String.format(
"should not reach here, unknown CertValidity.Unit %s", unit));
}
}
private static boolean isLeapYear(final int year) {
if (year % 4 != 0) {
return false;
} else if (year % 100 != 0) {
return true;
} else {
return year % 400 == 0;
}
}
}