/*
* Copyright ( c ) 2015 , 2018 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code 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 General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
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*/
import java.nio.file.Files;
import java.nio.file.Paths;
import java.time.Instant;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import javax.security.auth.RefreshFailedException;
import javax.security.auth.Subject;
import javax.security.auth.kerberos.KerberosTicket;
import javax.security.auth.login.LoginContext;
/*
* @ test
* @ bug 6857795 8075299 8194486
* @ summary Checks Kerberos ticket properties
* @ library / test / lib
* @ run main jdk . test . lib . FileInstaller TestHosts TestHosts
* @ run main / othervm - Djdk . net . hosts . file = TestHosts KrbTicket
*/
public class KrbTicket {
private static final String REALM = "TEST.REALM" ;
private static final String HOST = "localhost" ;
private static final String USER = "TESTER" ;
private static final String USER_PRINCIPAL = USER + "@" + REALM;
private static final String PASSWORD = "password" ;
private static final String KRBTGT_PRINCIPAL = "krbtgt/" + REALM;
private static final String KRB5_CONF_FILENAME = "krb5.conf" ;
private static final String JAAS_CONF = "jaas.conf" ;
private static final long TICKET_LIFTETIME = 5 * 60 * 1000 ; // 5 mins
public static void main(String[] args) throws Exception {
// define principals
Map<String, String> principals = new HashMap<>();
principals.put(USER_PRINCIPAL, PASSWORD);
principals.put(KRBTGT_PRINCIPAL, null );
System.setProperty("java.security.krb5.conf" , KRB5_CONF_FILENAME);
// start a local KDC instance
KDC kdc = KDC.startKDC(HOST, null , REALM, principals, null , null );
KDC.saveConfig(KRB5_CONF_FILENAME, kdc,
"forwardable = true" , "proxiable = true" );
// create JAAS config
Files.write(Paths.get(JAAS_CONF), Arrays.asList(
"Client {" ,
" com.sun.security.auth.module.Krb5LoginModule required;" ,
"};"
));
System.setProperty("java.security.auth.login.config" , JAAS_CONF);
System.setProperty("javax.security.auth.useSubjectCredsOnly" , "false" );
long startTime = Instant.now().getEpochSecond() * 1000 ;
LoginContext lc = new LoginContext("Client" ,
new Helper.UserPasswordHandler(USER, PASSWORD));
lc.login();
Subject subject = lc.getSubject();
System.out.println("subject: " + subject);
Set creds = subject.getPrivateCredentials(
KerberosTicket.class );
if (creds.size() > 1 ) {
throw new RuntimeException("Multiple credintials found" );
}
Object o = creds.iterator().next();
if (!(o instanceof KerberosTicket)) {
throw new RuntimeException("Instance of KerberosTicket expected" );
}
KerberosTicket krbTkt = (KerberosTicket) o;
System.out.println("forwardable = " + krbTkt.isForwardable());
System.out.println("proxiable = " + krbTkt.isProxiable());
System.out.println("renewable = " + krbTkt.isRenewable());
System.out.println("current = " + krbTkt.isCurrent());
if (!krbTkt.isForwardable()) {
throw new RuntimeException("Forwardable ticket expected" );
}
if (!krbTkt.isProxiable()) {
throw new RuntimeException("Proxiable ticket expected" );
}
if (!krbTkt.isCurrent()) {
throw new RuntimeException("Ticket is not current" );
}
if (krbTkt.isRenewable()) {
throw new RuntimeException("Not renewable ticket expected" );
}
try {
krbTkt.refresh();
throw new RuntimeException(
"Expected RefreshFailedException not thrown" );
} catch (RefreshFailedException e) {
System.out.println("Expected exception: " + e);
}
if (!checkTime(krbTkt, startTime)) {
throw new RuntimeException("Wrong ticket life time" );
}
krbTkt.destroy();
if (!krbTkt.isDestroyed()) {
throw new RuntimeException("Ticket not destroyed" );
}
System.out.println("Test passed" );
}
private static boolean checkTime(KerberosTicket krbTkt, long startTime) {
long ticketEndTime = krbTkt.getEndTime().getTime();
long roughLifeTime = ticketEndTime - startTime;
System.out.println("start time = " + startTime);
System.out.println("end time = " + ticketEndTime);
System.out.println("rough life time = " + roughLifeTime);
return roughLifeTime >= TICKET_LIFTETIME;
}
}
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(vorverarbeitet am 2026-06-10)
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