/*
* Copyright ( c ) 2011 , 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
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
/*
* @ test
* @ bug 6894072 8194486
* @ summary always refresh keytab
* @ library / test / lib
* @ compile - XDignore . symbol . file TwoPrinces . java
* @ run main jdk . test . lib . FileInstaller TestHosts TestHosts
* @ run main / othervm - Djdk . net . hosts . file = TestHosts TwoPrinces
*/
import java.io.File;
import java.io.FileOutputStream;
import sun.security.jgss.GSSUtil;
import sun.security.krb5.Config;
public class TwoPrinces {
public static void main(String[] args)
throws Exception {
KDC k1 = KDC.create("R1" );
k1.addPrincipal("u1" , "hello" .toCharArray());
k1.addPrincipalRandKey("krbtgt/R1" );
k1.addPrincipalRandKey("host/same.host" );
KDC k2 = KDC.create("R2" );
k2.addPrincipal("u2" , "hello" .toCharArray());
k2.addPrincipalRandKey("krbtgt/R2" );
k2.addPrincipalRandKey("host/same.host" );
System.setProperty("java.security.krb5.conf" , "krb5.conf" );
// R1 is the default realm now
KDC.saveConfig("krb5.conf" , k1, k2);
Config.refresh();
k1.writeKtab("ktab1" );
k2.writeKtab("ktab2" );
// A JAAS config file with 2 Krb5LoginModules, after commit, the
// subject with have principals and keytabs from both sides
System.setProperty("java.security.auth.login.config" , "jaas.conf" );
File f = new File("jaas.conf" );
FileOutputStream fos = new FileOutputStream(f);
fos.write((
"me {\n"
+ " com.sun.security.auth.module.Krb5LoginModule required"
+ " isInitiator=true principal=\" host/same.host@R1\""
+ " useKeyTab=true keyTab=ktab1 storeKey=true;\n"
+ " com.sun.security.auth.module.Krb5LoginModule required"
+ " isInitiator=true principal=\" host/same.host@R2\""
+ " useKeyTab=true keyTab=ktab2 storeKey=true;\n"
+ "};\n"
).getBytes());
fos.close();
/*
* This server side context will be able to act as services in both
* realms . Please note that we still don ' t support a single instance
* of server to accept connections from two realms at the same time .
* Therefore , we must call startAsServer in a given realm to start
* working there . The same Subject never changes anyway .
*/
Context s = Context.fromJAAS("me" );
// Default realm still R1
s.startAsServer("host@same.host" , GSSUtil.GSS_KRB5_MECH_OID);
Context c1 = Context.fromUserPass("u1" , "hello" .toCharArray(), false );
c1.startAsClient("host@same.host" , GSSUtil.GSS_KRB5_MECH_OID);
Context.handshake(c1, s);
KDC.saveConfig("krb5.conf" , k2, k1);
Config.refresh();
// Default realm now R2
s.startAsServer("host@same.host" , GSSUtil.GSS_KRB5_MECH_OID);
Context c2 = Context.fromUserPass("u2" , "hello" .toCharArray(), false );
c2.startAsClient("host@same.host" , GSSUtil.GSS_KRB5_MECH_OID);
Context.handshake(c2, s);
}
}
Messung V0.5 in Prozent C=85 H=92 G=88
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-06-10)
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