71 lines
2.7 KiB
Java
71 lines
2.7 KiB
Java
/*
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* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8048073
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* @summary Cannot read ccache entry with a realm-less service name
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* @modules java.security.jgss/sun.security.krb5
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* java.security.jgss/sun.security.krb5.internal.ccache
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* @compile -XDignore.symbol.file EmptyRealmCC.java
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* @run main EmptyRealmCC
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*/
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import java.nio.file.Files;
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import java.nio.file.Paths;
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import sun.security.krb5.internal.ccache.CredentialsCache;
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public class EmptyRealmCC {
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public static void main(String[] args) throws Exception {
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byte[] ccache = TimeInCCache.ccache;
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// The service name starts at 0x52:
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//
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// 0050: 00 00 00 02 00 00 00 0A 4D 41 58 49 2E 4C
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// ----------- -----------
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// 0060: 4F 43 41 4C 00 00 00 06 6B 72 62 74 67 74 00 00
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// ----------- -----
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// 0070: 00 0A 4D 41 58 49 2E 4C 4F 43 41 4C
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// -----
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//
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// which contains 2 (the length of names), a 10-byte realm, a 6-byte
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// name[0], and a 10-byte name[1].
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// We will empty the realm, and pack the realm string to another
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// name (6-byte ".LOCAL"). Finally "krbtgt/MAXI.LOCAL@MAXI.LOCAL"
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// becomes ".LOCAL/krbtgt/MAXI.LOCAL@".
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// length of names is now 3
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ccache[0x55] = 3;
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// The empty realm
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System.arraycopy(new byte[4], 0, ccache, 0x56, 4);
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// Length of inserted name is 6
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System.arraycopy(new byte[]{0,0,0,6}, 0, ccache, 0x5A, 4);
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Files.write(Paths.get("tmpcc"), TimeInCCache.ccache);
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if (CredentialsCache.getInstance("tmpcc").getCredsList() != null) {
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throw new Exception("Nothing should be there");
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}
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}
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}
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