1 /*
2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @bug 6894072
27 * @compile -XDignore.symbol.file DynamicKeytab.java
28 * @run main/othervm DynamicKeytab
29 * @summary always refresh keytab
30 */
31
32 import java.io.File;
33 import java.io.FileOutputStream;
34 import java.nio.file.Files;
35 import java.nio.file.Paths;
36 import org.ietf.jgss.GSSException;
37 import sun.security.jgss.GSSUtil;
38 import sun.security.krb5.KrbException;
39 import sun.security.krb5.internal.Krb5;
40
41 public class DynamicKeytab {
42
43 Context c, s;
44 public static void main(String[] args)
45 throws Exception {
46 new DynamicKeytab().go();
47 }
48
49 void go() throws Exception {
50 OneKDC k = new OneKDC(null);
51 k.writeJAASConf();
52
53 Files.delete(Paths.get(OneKDC.KTAB));
54
55 // Starts with no keytab
56 c = Context.fromJAAS("client");
57 s = Context.fromJAAS("com.sun.security.jgss.krb5.accept");
58
59 // Test 1: read new key 1 from keytab
60 k.addPrincipal(OneKDC.SERVER, "pass1".toCharArray());
61 k.writeKtab(OneKDC.KTAB);
62 connect();
63
64 // Test 2: service key cached, find 1 in keytab (now contains 1 and 2)
65 k.addPrincipal(OneKDC.SERVER, "pass2".toCharArray());
66 k.appendKtab(OneKDC.KTAB);
67 connect();
68
69 // Test 3: re-login. Now find 2 in keytab
70 c = Context.fromJAAS("client");
71 connect();
72
73 // Test 4: re-login, KDC use 3 this time.
74 c = Context.fromJAAS("client");
75 // Put 3 and 4 into keytab but keep the real key back to 3.
76 k.addPrincipal(OneKDC.SERVER, "pass3".toCharArray());
77 k.appendKtab(OneKDC.KTAB);
78 k.addPrincipal(OneKDC.SERVER, "pass4".toCharArray());
79 k.appendKtab(OneKDC.KTAB);
80 k.addPrincipal(OneKDC.SERVER, "pass3".toCharArray());
81 connect();
82
83 // Test 5: invalid keytab file, should ignore
84 try (FileOutputStream fos = new FileOutputStream(OneKDC.KTAB)) {
85 fos.write("BADBADBAD".getBytes());
86 }
87 connect();
88
89 // Test 6: delete keytab file, identical to revoke all
90 Files.delete(Paths.get(OneKDC.KTAB));
91 try {
92 connect();
93 throw new Exception("Should not success");
94 } catch (GSSException gsse) {
95 System.out.println(gsse);
96 KrbException ke = (KrbException)gsse.getCause();
97 // KrbApReq.authenticate(*) if (dkey == null)...
98 // This should have been Krb5.KRB_AP_ERR_NOKEY
99 if (ke.returnCode() != Krb5.API_INVALID_ARG) {
100 throw new Exception("Not expected failure code: " +
101 ke.returnCode());
102 }
103 }
104
105 // Test 7: 3 revoked, should fail (now contains only 5)
106 k.addPrincipal(OneKDC.SERVER, "pass5".toCharArray());
107 k.writeKtab(OneKDC.KTAB); // overwrite keytab, which means
108 // old key is revoked
109 try {
110 connect();
111 throw new Exception("Should not success");
112 } catch (GSSException gsse) {
113 System.out.println(gsse);
114 // Since 7197159, different kvno is accepted, this return code
115 // will never be thrown out again.
116 //KrbException ke = (KrbException)gsse.getCause();
117 //if (ke.returnCode() != Krb5.KRB_AP_ERR_BADKEYVER) {
118 // throw new Exception("Not expected failure code: " +
119 // ke.returnCode());
120 //}
121 }
122
123 // Test 8: an empty KDC means revoke all
124 KDC.create("EMPTY.REALM").writeKtab(OneKDC.KTAB);
125 try {
126 connect();
127 throw new Exception("Should not success");
128 } catch (GSSException gsse) {
129 System.out.println(gsse);
130 KrbException ke = (KrbException)gsse.getCause();
131 // KrbApReq.authenticate(*) if (dkey == null)...
132 // This should have been Krb5.KRB_AP_ERR_NOKEY
133 if (ke.returnCode() != Krb5.API_INVALID_ARG) {
134 throw new Exception("Not expected failure code: " +
135 ke.returnCode());
136 }
137 }
138 }
139
140 void connect() throws Exception {
141 Thread.sleep(2000); // make sure ktab timestamp is different
142 c.startAsClient(OneKDC.SERVER, GSSUtil.GSS_KRB5_MECH_OID);
143 s.startAsServer(GSSUtil.GSS_KRB5_MECH_OID);
144 Context.handshake(c, s);
145 }
146 }