org.wildfly.security.keystore.LdapGeneralizedTimeUtil Maven / Gradle / Ivy
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* Copyright 2016 Red Hat, Inc., and individual contributors
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* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package org.wildfly.security.keystore;
import java.text.ParseException;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;
/**
* LDAP timestamp (Generalized time as defined in RFC 4517) util
*
* @author Jan Kalina
*/
class LdapGeneralizedTimeUtil {
/**
* Convert Generalized Time as defined in RFC4517 to the Date
*/
static Date generalizedTimeToDate(String generalized) throws ParseException {
String[] parts = generalized.split("[Z+-]");
String[] timeFraction = parts[0].split("[.,]");
String time = timeFraction[0];
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(0);
calendar.setLenient(false);
calendar.set(Calendar.YEAR, Integer.parseInt(time.substring(0, 4)));
calendar.set(Calendar.MONTH, Integer.parseInt(time.substring(4, 6)) - 1);
calendar.set(Calendar.DAY_OF_MONTH, Integer.parseInt(time.substring(6, 8)));
calendar.set(Calendar.HOUR_OF_DAY, Integer.parseInt(time.substring(8, 10)));
if (time.length() >= 12) calendar.set(Calendar.MINUTE, Integer.parseInt(time.substring(10, 12)));
if (time.length() >= 14) calendar.set(Calendar.SECOND, Integer.parseInt(time.substring(12, 14)));
// fraction
if (timeFraction.length >= 2) {
double fraction = Double.parseDouble("0." + timeFraction[1]);
if (time.length() >= 14) { // fraction of second
calendar.set(Calendar.MILLISECOND, (int) Math.round(fraction * 1000));
} else if (time.length() >= 12) { // fraction of minute
calendar.set(Calendar.SECOND, (int) Math.round(fraction * 60));
} else { // fraction of hour
calendar.set(Calendar.MINUTE, (int) Math.round(fraction * 60));
}
}
// timezone
if (generalized.length() > parts[0].length()) {
char delimiter = generalized.charAt(parts[0].length());
if (delimiter == 'Z') {
calendar.setTimeZone(TimeZone.getTimeZone("GMT"));
} else {
calendar.setTimeZone(TimeZone.getTimeZone("GMT" + delimiter + parts[1]));
}
}
return calendar.getTime();
}
}