--- /dev/null 2014-06-25 16:47:47.000000000 +0800 +++ new/test/sun/security/krb5/ccache/EmptyRealmCC.java 2014-06-25 16:47:46.000000000 +0800 @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2014, 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 8048073 + * @summary Cannot read ccache entry with a realm-less service name + * @compile -XDignore.symbol.file EmptyRealmCC.java + * @run main EmptyRealmCC + */ +import java.nio.file.Files; +import java.nio.file.Paths; + +import sun.security.krb5.internal.ccache.CredentialsCache; + +public class EmptyRealmCC { + public static void main(String[] args) throws Exception { + byte[] ccache = TimeInCCache.ccache; + + // The service name starts at 0x52: + // + // 0050: 00 00 00 02 00 00 00 0A 4D 41 58 49 2E 4C + // ----------- ----------- + // 0060: 4F 43 41 4C 00 00 00 06 6B 72 62 74 67 74 00 00 + // ----------- ----- + // 0070: 00 0A 4D 41 58 49 2E 4C 4F 43 41 4C + // ----- + // + // which contains 2 (the length of names), a 10-byte realm, a 6-byte + // name[0], and a 10-byte name[1]. + + // We will empty the realm, and pack the realm string to another + // name (6-byte ".LOCAL"). Finally "krbtgt/MAXI.LOCAL@MAXI.LOCAL" + // becomes ".LOCAL/krbtgt/MAXI.LOCAL@". + + // length of names is now 3 + ccache[0x55] = 3; + // The empty realm + System.arraycopy(new byte[4], 0, ccache, 0x56, 4); + // Length of inserted name is 6 + System.arraycopy(new byte[]{0,0,0,6}, 0, ccache, 0x5A, 4); + + Files.write(Paths.get("tmpcc"), TimeInCCache.ccache); + if (CredentialsCache.getInstance("tmpcc").getCredsList() != null) { + throw new Exception("Nothing should be there"); + } + } +}