File: 6706974-krb5_test_infrastructure.patch

package info (click to toggle)
openjdk-6 6b27-1.12.6-1~deb6u1
  • links: PTS, VCS
  • area: main
  • in suites: squeeze-proposed-updates
  • size: 133,540 kB
  • ctags: 37,146
  • sloc: java: 173,188; cpp: 13,710; asm: 6,470; ansic: 4,827; sh: 4,156; makefile: 4,149; perl: 1,005; python: 310
file content (2090 lines) | stat: -rw-r--r-- 82,639 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
# HG changeset patch
# User weijun
# Date 1224219720 -28800
# Node ID 3f051f3ba5bba355ddd6df6d0cb1528aef631a2d
# Parent  8b2d7e577d4a89fab8a892623cb4dff4e6fca0a6
6706974: Add krb5 test infrastructure
Reviewed-by: valeriep

diff -r 8b2d7e577d4a -r 3f051f3ba5bb test/sun/security/krb5/auto/Action.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ openjdk/jdk/test/sun/security/krb5/auto/Action.java	Fri Oct 17 13:02:00 2008 +0800
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/**
+ * Action used in Context.doAs
+ */
+public interface Action {
+    /**
+     * This method always reads a byte block and emits another one
+     */
+    byte[] run(Context s, byte[] input) throws Exception;
+}
+
diff -r 8b2d7e577d4a -r 3f051f3ba5bb test/sun/security/krb5/auto/BasicKrb5Test.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ openjdk/jdk/test/sun/security/krb5/auto/BasicKrb5Test.java	Fri Oct 17 13:02:00 2008 +0800
@@ -0,0 +1,111 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 6706974
+ * @summary Add krb5 test infrastructure
+ */
+
+import org.ietf.jgss.GSSName;
+import sun.security.jgss.GSSUtil;
+import sun.security.krb5.Config;
+import sun.security.krb5.internal.crypto.EType;
+
+/**
+ * Basic JGSS/krb5 test with 3 parties: client, server, backend server. Each
+ * party uses JAAS login to get subjects and executes JGSS calls using
+ * Subject.doAs.
+ */
+public class BasicKrb5Test {
+
+    /**
+     * @param args empty or etype
+     */
+    public static void main(String[] args)
+            throws Exception {
+
+        String etype = null;
+        if (args.length > 0) {
+            etype = args[0];
+        }
+        System.out.println("Testing etype " + etype);
+        if (etype != null && !EType.isSupported(Config.getInstance().getType(etype))) {
+            System.out.println("Not supported.");
+            System.exit(0);
+        }
+
+        // Creates and starts the KDC
+        new OneKDC(etype).writeJAASConf();
+        new BasicKrb5Test().go(OneKDC.SERVER, OneKDC.BACKEND);
+    }
+
+    void go(final String server, final String backend) throws Exception {
+        Context c, s, s2, b;
+        c = Context.fromJAAS("client");
+        s = Context.fromJAAS("server");
+        b = Context.fromJAAS("backend");
+
+        c.startAsClient(server, GSSUtil.GSS_KRB5_MECH_OID);
+        c.x().requestCredDeleg(true);
+        s.startAsServer(GSSUtil.GSS_KRB5_MECH_OID);
+
+        c.status();
+        s.status();
+
+        Context.handshake(c, s);
+        GSSName client = c.x().getSrcName();
+
+        c.status();
+        s.status();
+
+        Context.transmit("i say high --", c, s);
+        Context.transmit("   you say low", s, c);
+
+        s2 = s.delegated();
+        s.dispose();
+        s = null;
+
+        s2.startAsClient(backend, GSSUtil.GSS_KRB5_MECH_OID);
+        b.startAsServer(GSSUtil.GSS_KRB5_MECH_OID);
+
+        s2.status();
+        b.status();
+
+        Context.handshake(s2, b);
+        GSSName client2 = b.x().getSrcName();
+
+        if (!client.equals(client2)) {
+            throw new Exception("Delegation failed");
+        }
+
+        s2.status();
+        b.status();
+
+        Context.transmit("you say hello --", s2, b);
+        Context.transmit("   i say goodbye", b, s2);
+
+        s2.dispose();
+        b.dispose();
+    }
+}
diff -r 8b2d7e577d4a -r 3f051f3ba5bb test/sun/security/krb5/auto/CleanState.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ openjdk/jdk/test/sun/security/krb5/auto/CleanState.java	Fri Oct 17 13:02:00 2008 +0800
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 6716534
+ * @summary Krb5LoginModule has not cleaned temp info between authentication attempts
+ */
+import com.sun.security.auth.module.Krb5LoginModule;
+import java.util.HashMap;
+import java.util.Map;
+import javax.security.auth.Subject;
+import javax.security.auth.callback.Callback;
+import javax.security.auth.callback.CallbackHandler;
+import javax.security.auth.callback.NameCallback;
+import javax.security.auth.callback.PasswordCallback;
+
+public class CleanState {
+    public static void main(String[] args) throws Exception {
+        CleanState x = new CleanState();
+        new OneKDC(null);
+        x.go();
+    }
+
+    void go() throws Exception {
+        Krb5LoginModule krb5 = new Krb5LoginModule();
+
+        final String name = OneKDC.USER;
+        final char[] password = OneKDC.PASS;
+        char[] badpassword = "hellokitty".toCharArray();
+
+        Map<String,String> map = new HashMap<String,String>();
+        map.put("useTicketCache", "false");
+        map.put("doNotPrompt", "false");
+        map.put("tryFirstPass", "true");
+        Map<String,Object> shared = new HashMap<String,Object>();
+        shared.put("javax.security.auth.login.name", name);
+        shared.put("javax.security.auth.login.password", badpassword);
+
+        krb5.initialize(new Subject(), new CallbackHandler() {
+            @Override
+            public void handle(Callback[] callbacks) {
+                for(Callback callback: callbacks) {
+                    if (callback instanceof NameCallback) {
+                        ((NameCallback)callback).setName(name);
+                    }
+                    if (callback instanceof PasswordCallback) {
+                        ((PasswordCallback)callback).setPassword(password);
+                    }
+                }
+            }
+        }, shared, map);
+        krb5.login();
+    }
+}
diff -r 8b2d7e577d4a -r 3f051f3ba5bb test/sun/security/krb5/auto/Context.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ openjdk/jdk/test/sun/security/krb5/auto/Context.java	Fri Oct 17 13:02:00 2008 +0800
@@ -0,0 +1,386 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+import com.sun.security.auth.module.Krb5LoginModule;
+import java.security.PrivilegedActionException;
+import java.security.PrivilegedExceptionAction;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import javax.security.auth.Subject;
+import javax.security.auth.kerberos.KerberosKey;
+import javax.security.auth.kerberos.KerberosTicket;
+import javax.security.auth.login.LoginContext;
+import org.ietf.jgss.GSSContext;
+import org.ietf.jgss.GSSCredential;
+import org.ietf.jgss.GSSException;
+import org.ietf.jgss.GSSManager;
+import org.ietf.jgss.GSSName;
+import org.ietf.jgss.MessageProp;
+import org.ietf.jgss.Oid;
+
+/**
+ * Context of a JGSS subject, encapsulating Subject and GSSContext.
+ *
+ * Three "constructors", which acquire the (private) credentials and fill
+ * it into the Subject:
+ *
+ * 1. static fromJAAS(): Creates a Context using a JAAS login config entry
+ * 2. static fromUserPass(): Creates a Context using a username and a password
+ * 3. delegated(): A new context which uses the delegated credentials from a
+ *    previously established acceptor Context
+ *
+ * Two context initiators, which create the GSSContext object inside:
+ *
+ * 1. startAsClient()
+ * 2. startAsServer()
+ *
+ * Privileged action:
+ *    doAs(): Performs an action in the name of the Subject
+ *
+ * Handshake process:
+ *    static handShake(initiator, acceptor)
+ *
+ * A four-phase typical data communication which includes all four GSS
+ * actions (wrap, unwrap, getMic and veryfyMiC):
+ *    static transmit(message, from, to)
+ */
+public class Context {
+
+    private Subject s;
+    private GSSContext x;
+    private boolean f;      // context established?
+    private String name;
+    private GSSCredential cred;     // see static method delegated().
+
+    private Context() {}
+
+    /**
+     * Using the delegated credentials from a previous acceptor
+     * @param c
+     */
+    public Context delegated() throws Exception {
+        Context out = new Context();
+        out.s = s;
+        out.cred = x.getDelegCred();
+        out.name = name + " as " + out.cred.getName().toString();
+        return out;
+    }
+
+    /**
+     * Logins with a JAAS login config entry name
+     */
+    public static Context fromJAAS(final String name) throws Exception {
+        Context out = new Context();
+        out.name = name;
+        LoginContext lc = new LoginContext(name);
+        lc.login();
+        out.s = lc.getSubject();
+        return out;
+    }
+
+    /**
+     * Logins with a username and a password, using Krb5LoginModule directly
+     * @param storeKey true if key should be saved, used on acceptor side
+     */
+    public static Context fromUserPass(String user, char[] pass, boolean storeKey) throws Exception {
+        Context out = new Context();
+        out.name = user;
+        out.s = new Subject();
+        Krb5LoginModule krb5 = new Krb5LoginModule();
+        Map<String, String> map = new HashMap<String, String>();
+        map.put("tryFirstPass", "true");
+        if (storeKey) {
+            map.put("storeKey", "true");
+        }
+        Map<String, Object> shared = new HashMap<String, Object>();
+        shared.put("javax.security.auth.login.name", user);
+        shared.put("javax.security.auth.login.password", pass);
+
+        krb5.initialize(out.s, null, shared, map);
+        krb5.login();
+        krb5.commit();
+        return out;
+    }
+
+    /**
+     * Starts as a client
+     * @param target communication peer
+     * @param mech GSS mech
+     * @throws java.lang.Exception
+     */
+    public void startAsClient(final String target, final Oid mech) throws Exception {
+        doAs(new Action() {
+            @Override
+            public byte[] run(Context me, byte[] dummy) throws Exception {
+                GSSManager m = GSSManager.getInstance();
+                me.x = m.createContext(
+                        target.indexOf('@') < 0 ?
+                            m.createName(target, null) :
+                            m.createName(target, GSSName.NT_HOSTBASED_SERVICE),
+                        mech,
+                        cred,
+                        GSSContext.DEFAULT_LIFETIME);
+                return null;
+            }
+        }, null);
+        f = false;
+    }
+
+    /**
+     * Starts as a server
+     * @param mech GSS mech
+     * @throws java.lang.Exception
+     */
+    public void startAsServer(final Oid mech) throws Exception {
+        doAs(new Action() {
+            @Override
+            public byte[] run(Context me, byte[] dummy) throws Exception {
+                GSSManager m = GSSManager.getInstance();
+                me.x = m.createContext(m.createCredential(
+                        null,
+                        GSSCredential.INDEFINITE_LIFETIME,
+                        mech,
+                        GSSCredential.ACCEPT_ONLY));
+                return null;
+            }
+        }, null);
+        f = false;
+    }
+
+    /**
+     * Accesses the internal GSSContext object. Currently it's used for --
+     *
+     * 1. calling requestXXX() before handshake
+     * 2. accessing source name
+     *
+     * Note: If the application needs to do any privileged call on this
+     * object, please use doAs(). Otherwise, it can be done directly. The
+     * methods listed above are all non-privileged calls.
+     *
+     * @return the GSSContext object
+     */
+    public GSSContext x() {
+        return x;
+    }
+
+    /**
+     * Disposes the GSSContext within
+     * @throws org.ietf.jgss.GSSException
+     */
+    public void dispose() throws GSSException {
+        x.dispose();
+    }
+
+    /**
+     * Does something using the Subject inside
+     * @param action the action
+     * @param in the input byte
+     * @return the output byte
+     * @throws java.lang.Exception
+     */
+    public byte[] doAs(final Action action, final byte[] in) throws Exception {
+        try {
+            return Subject.doAs(s, new PrivilegedExceptionAction<byte[]>() {
+
+                @Override
+                public byte[] run() throws Exception {
+                    return action.run(Context.this, in);
+                }
+            });
+        } catch (PrivilegedActionException pae) {
+            throw pae.getException();
+        }
+    }
+
+    /**
+     * Prints status of GSSContext and Subject
+     * @throws java.lang.Exception
+     */
+    public void status() throws Exception {
+        System.out.println("STATUS OF " + name.toUpperCase());
+        try {
+            StringBuffer sb = new StringBuffer();
+            if (x.getAnonymityState()) {
+                sb.append("anon, ");
+            }
+            if (x.getConfState()) {
+                sb.append("conf, ");
+            }
+            if (x.getCredDelegState()) {
+                sb.append("deleg, ");
+            }
+            if (x.getIntegState()) {
+                sb.append("integ, ");
+            }
+            if (x.getMutualAuthState()) {
+                sb.append("mutual, ");
+            }
+            if (x.getReplayDetState()) {
+                sb.append("rep det, ");
+            }
+            if (x.getSequenceDetState()) {
+                sb.append("seq det, ");
+            }
+            System.out.println("Context status of " + name + ": " + sb.toString());
+            System.out.println(x.getSrcName() + " -> " + x.getTargName());
+        } catch (Exception e) {
+            ;// Don't care
+        }
+        System.out.println("=====================================");
+        for (Object o : s.getPrivateCredentials()) {
+            System.out.println("    " + o.getClass());
+            if (o instanceof KerberosTicket) {
+                KerberosTicket kt = (KerberosTicket) o;
+                System.out.println("        " + kt.getServer() + " for " + kt.getClient());
+            } else if (o instanceof KerberosKey) {
+                KerberosKey kk = (KerberosKey) o;
+                System.out.print("        " + kk.getKeyType() + " " + kk.getVersionNumber() + " " + kk.getAlgorithm() + " ");
+                for (byte b : kk.getEncoded()) {
+                    System.out.printf("%02X", b & 0xff);
+                }
+                System.out.println();
+            } else if (o instanceof Map) {
+                Map map = (Map) o;
+                for (Object k : map.keySet()) {
+                    System.out.println("        " + k + ": " + map.get(k));
+                }
+            }
+        }
+    }
+
+    /**
+     * Transmits a message from one Context to another. The sender wraps the
+     * message and sends it to the receiver. The receiver unwraps it, creates
+     * a MIC of the clear text and sends it back to the sender. The sender
+     * verifies the MIC against the message sent earlier.
+     * @param message the message
+     * @param s1 the sender
+     * @param s2 the receiver
+     * @throws java.lang.Exception If anything goes wrong
+     */
+    static public void transmit(final String message, final Context s1,
+            final Context s2) throws Exception {
+        final byte[] messageBytes = message.getBytes();
+        System.out.printf("-------------------- TRANSMIT from %s to %s------------------------\n",
+                s1.name, s2.name);
+
+        byte[] t = s1.doAs(new Action() {
+            @Override
+            public byte[] run(Context me, byte[] dummy) throws Exception {
+                System.out.println("wrap");
+                MessageProp p1 = new MessageProp(0, true);
+                byte[] out = me.x.wrap(messageBytes, 0, messageBytes.length, p1);
+                System.out.println(printProp(p1));
+                return out;
+            }
+        }, null);
+
+        t = s2.doAs(new Action() {
+            @Override
+            public byte[] run(Context me, byte[] input) throws Exception {
+                MessageProp p1 = new MessageProp(0, true);
+                byte[] bytes = me.x.unwrap(input, 0, input.length, p1);
+                if (!Arrays.equals(messageBytes, bytes))
+                    throw new Exception("wrap/unwrap mismatch");
+                System.out.println("unwrap");
+                System.out.println(printProp(p1));
+                p1 = new MessageProp(0, true);
+                System.out.println("getMIC");
+                bytes = me.x.getMIC(bytes, 0, bytes.length, p1);
+                System.out.println(printProp(p1));
+                return bytes;
+            }
+        }, t);
+        // Re-unwrap should make p2.isDuplicateToken() returns true
+        s1.doAs(new Action() {
+            @Override
+            public byte[] run(Context me, byte[] input) throws Exception {
+                MessageProp p1 = new MessageProp(0, true);
+                System.out.println("verifyMIC");
+                me.x.verifyMIC(input, 0, input.length,
+                        messageBytes, 0, messageBytes.length,
+                        p1);
+                System.out.println(printProp(p1));
+                return null;
+            }
+        }, t);
+    }
+
+    /**
+     * Returns a string description of a MessageProp object
+     * @param prop the object
+     * @return the description
+     */
+    static public String printProp(MessageProp prop) {
+        StringBuffer sb = new StringBuffer();
+        sb.append("MessagePop: ");
+        sb.append("QOP="+ prop.getQOP() + ", ");
+        sb.append(prop.getPrivacy()?"privacy, ":"");
+        sb.append(prop.isDuplicateToken()?"dup, ":"");
+        sb.append(prop.isGapToken()?"gap, ":"");
+        sb.append(prop.isOldToken()?"old, ":"");
+        sb.append(prop.isUnseqToken()?"unseq, ":"");
+        sb.append(prop.getMinorString()+ "(" + prop.getMinorStatus()+")");
+        return sb.toString();
+    }
+
+    /**
+     * Handshake (security context establishment process) between two Contexts
+     * @param c the initiator
+     * @param s the acceptor
+     * @throws java.lang.Exception
+     */
+    static public void handshake(final Context c, final Context s) throws Exception {
+        byte[] t = new byte[0];
+        while (!c.f || !s.f) {
+            t = c.doAs(new Action() {
+                @Override
+                public byte[] run(Context me, byte[] input) throws Exception {
+                    if (me.x.isEstablished()) {
+                        me.f = true;
+                        System.out.println(c.name + " side established");
+                        return null;
+                    } else {
+                        System.out.println(c.name + " call initSecContext");
+                        return me.x.initSecContext(input, 0, input.length);
+                    }
+                }
+            }, t);
+
+            t = s.doAs(new Action() {
+                @Override
+                public byte[] run(Context me, byte[] input) throws Exception {
+                    if (me.x.isEstablished()) {
+                        me.f = true;
+                        System.out.println(s.name + " side established");
+                        return null;
+                    } else {
+                        System.out.println(s.name + " called acceptSecContext");
+                        return me.x.acceptSecContext(input, 0, input.length);
+                    }
+                }
+            }, t);
+        }
+    }
+}
diff -r 8b2d7e577d4a -r 3f051f3ba5bb test/sun/security/krb5/auto/CrossRealm.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ openjdk/jdk/test/sun/security/krb5/auto/CrossRealm.java	Fri Oct 17 13:02:00 2008 +0800
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 6706974
+ * @summary Add krb5 test infrastructure
+ */
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.security.Security;
+import javax.security.auth.callback.Callback;
+import javax.security.auth.callback.CallbackHandler;
+import javax.security.auth.callback.NameCallback;
+import javax.security.auth.callback.PasswordCallback;
+import javax.security.auth.callback.UnsupportedCallbackException;
+import org.ietf.jgss.GSSContext;
+import org.ietf.jgss.GSSManager;
+import org.ietf.jgss.GSSName;
+import sun.security.jgss.GSSUtil;
+
+public class CrossRealm implements CallbackHandler {
+    public static void main(String[] args) throws Exception {
+        startKDCs();
+        xRealmAuth();
+    }
+
+    static void startKDCs() throws Exception {
+        // Create and start the KDC
+        KDC kdc1 = KDC.create("RABBIT.HOLE");
+        kdc1.addPrincipal("dummy", "bogus".toCharArray());
+        kdc1.addPrincipalRandKey("krbtgt/RABBIT.HOLE");
+        kdc1.addPrincipal("krbtgt/SNAKE.HOLE", "sharedsec".toCharArray());
+
+        KDC kdc2 = KDC.create("SNAKE.HOLE");
+        kdc2.addPrincipalRandKey("krbtgt/SNAKE.HOLE");
+        kdc2.addPrincipal("krbtgt/RABBIT.HOLE", "sharedsec".toCharArray());
+        kdc2.addPrincipalRandKey("host/www.snake.hole");
+
+        KDC.saveConfig("krb5-localkdc.conf", kdc1, kdc2,
+                "forwardable=true",
+                "[domain_realm]",
+                ".snake.hole=SNAKE.HOLE");
+        System.setProperty("java.security.krb5.conf", "krb5-localkdc.conf");
+    }
+
+    static void xRealmAuth() throws Exception {
+        Security.setProperty("auth.login.defaultCallbackHandler", "CrossRealm");
+        System.setProperty("java.security.auth.login.config", "jaas-localkdc.conf");
+        System.setProperty("javax.security.auth.useSubjectCredsOnly", "false");
+        FileOutputStream fos = new FileOutputStream("jaas-localkdc.conf");
+        fos.write(("com.sun.security.jgss.krb5.initiate {\n" +
+                "    com.sun.security.auth.module.Krb5LoginModule\n" +
+                "    required\n" +
+                "    principal=dummy\n" +
+                "    doNotPrompt=false\n" +
+                "    useTicketCache=false\n" +
+                "    ;\n" +
+                "};").getBytes());
+        fos.close();
+
+        GSSManager m = GSSManager.getInstance();
+        m.createContext(
+                m.createName("host@www.snake.hole", GSSName.NT_HOSTBASED_SERVICE),
+                GSSUtil.GSS_KRB5_MECH_OID,
+                null,
+                GSSContext.DEFAULT_LIFETIME).initSecContext(new byte[0], 0, 0);
+    }
+
+    @Override
+    public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
+        for (Callback callback : callbacks) {
+            if (callback instanceof NameCallback) {
+                ((NameCallback) callback).setName("dummy");
+            }
+            if (callback instanceof PasswordCallback) {
+                ((PasswordCallback) callback).setPassword("bogus".toCharArray());
+            }
+        }
+    }
+}
diff -r 8b2d7e577d4a -r 3f051f3ba5bb test/sun/security/krb5/auto/KDC.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ openjdk/jdk/test/sun/security/krb5/auto/KDC.java	Fri Oct 17 13:02:00 2008 +0800
@@ -0,0 +1,962 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.net.*;
+import java.io.*;
+import java.lang.reflect.Method;
+import java.security.SecureRandom;
+import java.util.*;
+import java.util.concurrent.*;
+import sun.security.krb5.*;
+import sun.security.krb5.internal.*;
+import sun.security.krb5.internal.crypto.KeyUsage;
+import sun.security.krb5.internal.ktab.KeyTab;
+import sun.security.util.DerInputStream;
+import sun.security.util.DerOutputStream;
+import sun.security.util.DerValue;
+
+/**
+ * A KDC server.
+ * <p>
+ * Features:
+ * <ol>
+ * <li> Supports TCP and UDP
+ * <li> Supports AS-REQ and TGS-REQ
+ * <li> Principal db and other settings hard coded in application
+ * <li> Options, say, request preauth or not
+ * </ol>
+ * Side effects:
+ * <ol>
+ * <li> The Sun-internal class <code>sun.security.krb5.Config</code> is a
+ * singleton and initialized according to Kerberos settings (krb5.conf and
+ * java.security.krb5.* system properties). This means once it's initialized
+ * it will not automatically notice any changes to these settings (or file
+ * changes of krb5.conf). The KDC class normally does not touch these
+ * settings (except for the <code>writeKtab()</code> method). However, to make
+ * sure nothing ever goes wrong, if you want to make any changes to these
+ * settings after calling a KDC method, call <code>Config.refresh()</code> to
+ * make sure your changes are reflected in the <code>Config</code> object.
+ * </ol>
+ * Issues and TODOs:
+ * <ol>
+ * <li> Generates krb5.conf to be used on another machine, currently the kdc is
+ * always localhost
+ * <li> More options to KDC, say, error output, say, response nonce !=
+ * request nonce
+ * </ol>
+ * Note: This program uses internal krb5 classes (including reflection to
+ * access private fields and methods).
+ * <p>
+ * Usages:
+ * <p>
+ * 1. Init and start the KDC:
+ * <pre>
+ * KDC kdc = KDC.create("REALM.NAME", port, isDaemon);
+ * KDC kdc = KDC.create("REALM.NAME");
+ * </pre>
+ * Here, <code>port</code> is the UDP and TCP port number the KDC server
+ * listens on. If zero, a random port is chosen, which you can use getPort()
+ * later to retrieve the value.
+ * <p>
+ * If <code>isDaemon</code> is true, the KDC worker threads will be daemons.
+ * <p>
+ * The shortcut <code>KDC.create("REALM.NAME")</code> has port=0 and
+ * isDaemon=false, and is commonly used in an embedded KDC.
+ * <p>
+ * 2. Adding users:
+ * <pre>
+ * kdc.addPrincipal(String principal_name, char[] password);
+ * kdc.addPrincipalRandKey(String principal_name);
+ * </pre>
+ * A service principal's name should look like "host/f.q.d.n". The second form
+ * generates a random key. To expose this key, call <code>writeKtab()</code> to
+ * save the keys into a keytab file.
+ * <p>
+ * Note that you need to add the principal name krbtgt/REALM.NAME yourself.
+ * <p>
+ * Note that you can safely add a principal at any time after the KDC is
+ * started and before a user requests info on this principal.
+ * <p>
+ * 3. Other public methods:
+ * <ul>
+ * <li> <code>getPort</code>: Returns the port number the KDC uses
+ * <li> <code>getRealm</code>: Returns the realm name
+ * <li> <code>writeKtab</code>: Writes all principals' keys into a keytab file
+ * <li> <code>saveConfig</code>: Saves a krb5.conf file to access this KDC
+ * <li> <code>setOption</code>: Sets various options
+ * </ul>
+ * Read the javadoc for details. Lazy developer can use <code>OneKDC</code>
+ * directly.
+ */
+public class KDC {
+
+    // Under the hood.
+
+    // The random generator to generate random keys (including session keys)
+    private static SecureRandom secureRandom = new SecureRandom();
+    // Principal db
+    private Map<String,char[]> passwords = new HashMap<String,char[]>();
+    // Realm name
+    private String realm;
+    // The request/response job queue
+    private BlockingQueue<Job> q = new ArrayBlockingQueue<Job>(100);
+    // Service port number
+    private int port;
+    // Options
+    private Map<Option,Object> options = new HashMap<Option,Object>();
+
+    /**
+     * Option names, to be expanded forever.
+     */
+    public static enum Option {
+        /**
+         * Whether pre-authentication is required. Default Boolean.TRUE
+         */
+        PREAUTH_REQUIRED,
+    };
+
+    /**
+     * A standalone KDC server.
+     * @param args
+     * @throws java.lang.Exception
+     */
+    public static void main(String[] args) throws Exception {
+        if (args.length > 0) {
+            if (args[0].equals("-help") || args[0].equals("--help")) {
+                System.out.println("Usage:");
+                System.out.println("   java " + KDC.class + "       " +
+                        "Start KDC on port 8888");
+                return;
+            }
+        }
+        KDC kdc = create("RABBIT.HOLE", 8888, false);
+        kdc.addPrincipal("dummy", "bogus".toCharArray());
+        kdc.addPrincipal("foo", "bar".toCharArray());
+        kdc.addPrincipalRandKey("krbtgt/" + kdc.realm);
+        kdc.addPrincipalRandKey("server/localhost");
+        kdc.addPrincipalRandKey("backend/localhost");
+    }
+
+    /**
+     * Creates and starts a KDC running as a daemon on a random port.
+     * @param realm the realm name
+     * @return the running KDC instance
+     * @throws java.io.IOException for any socket creation error
+     */
+    public static KDC create(String realm) throws IOException {
+        return create(realm, 0, true);
+    }
+
+    /**
+     * Creates and starts a KDC server.
+     * @param realm the realm name
+     * @param port the TCP and UDP port to listen to. A random port will to
+     *        chosen if zero.
+     * @param asDaemon if true, KDC threads will be daemons. Otherwise, not.
+     * @return the running KDC instance
+     * @throws java.io.IOException for any socket creation error
+     */
+    public static KDC create(String realm, int port, boolean asDaemon) throws IOException {
+        return new KDC(realm, port, asDaemon);
+    }
+
+    /**
+     * Sets an option
+     * @param key the option name
+     * @param obj the value
+     */
+    public void setOption(Option key, Object value) {
+        options.put(key, value);
+    }
+
+    /**
+     * Write all principals' keys into a keytab file. Note that the keys for
+     * the krbtgt principal for this realm will not be written.
+     * <p>
+     * Attention: This method references krb5.conf settings. If you need to
+     * setup krb5.conf later, please call <code>Config.refresh()</code> after
+     * the new setting. For example:
+     * <pre>
+     * kdc.writeKtab("/etc/kdc/ktab");  // Config is initialized,
+     * System.setProperty("java.security.krb5.conf", "/home/mykrb5.conf");
+     * Config.refresh();
+     * </pre>
+     *
+     * Inside this method there are 2 places krb5.conf is used:
+     * <ol>
+     * <li> (Fatal) Generating keys: EncryptionKey.acquireSecretKeys
+     * <li> (Has workaround) Creating PrincipalName
+     * </ol>
+     * @param tab The keytab filename to write to.
+     * @throws java.io.IOException for any file output error
+     * @throws sun.security.krb5.KrbException for any realm and/or principal
+     *         name error.
+     */
+    public void writeKtab(String tab) throws IOException, KrbException {
+        KeyTab ktab = KeyTab.create(tab);
+        for (String name : passwords.keySet()) {
+            if (name.equals("krbtgt/" + realm)) {
+                continue;
+            }
+            ktab.addEntry(new PrincipalName(name + "@" + realm,
+                    name.indexOf('/') < 0 ?
+                        PrincipalName.KRB_NT_UNKNOWN :
+                        PrincipalName.KRB_NT_SRV_HST), passwords.get(name));
+        }
+        ktab.save();
+    }
+
+    /**
+     * Adds a new principal to this realm with a given password.
+     * @param user the principal's name. For a service principal, use the
+     *        form of host/f.q.d.n
+     * @param pass the password for the principal
+     */
+    public void addPrincipal(String user, char[] pass) {
+        passwords.put(user, pass);
+    }
+
+    /**
+     * Adds a new principal to this realm with a random password
+     * @param user the principal's name. For a service principal, use the
+     *        form of host/f.q.d.n
+     */
+    public void addPrincipalRandKey(String user) {
+        passwords.put(user, randomPassword());
+    }
+
+    /**
+     * Returns the name of this realm
+     * @return the name of this realm
+     */
+    public String getRealm() {
+        return realm;
+    }
+
+    /**
+     * Writes a krb5.conf for one or more KDC that includes KDC locations for
+     * each realm and the default realm name. You can also add extra strings
+     * into the file. The method should be called like:
+     * <pre>
+     *   KDC.saveConfig("krb5.conf", kdc1, kdc2, ..., line1, line2, ...);
+     * </pre>
+     * Here you can provide one or more kdc# and zero or more line# arguments.
+     * The line# will be put after [libdefaults] and before [realms]. Therefore
+     * you can append new lines into [libdefaults] and/or create your new
+     * stanzas as well. Note that a newline character will be appended to
+     * each line# argument.
+     * <p>
+     * For example:
+     * <pre>
+     * KDC.saveConfig("krb5.conf", this);
+     * </pre>
+     * generates:
+     * <pre>
+     * [libdefaults]
+     * default_realm = REALM.NAME
+     *
+     * [realms]
+     *   REALM.NAME = {
+     *     kdc = localhost:port_number
+     *   }
+     * </pre>
+     *
+     * Another example:
+     * <pre>
+     * KDC.saveConfig("krb5.conf", kdc1, kdc2, "forwardable = true", "",
+     *         "[domain_realm]",
+     *         ".kdc1.com = KDC1.NAME");
+     * </pre>
+     * generates:
+     * <pre>
+     * [libdefaults]
+     * default_realm = KDC1.NAME
+     * forwardable = true
+     *
+     * [domain_realm]
+     * .kdc1.com = KDC1.NAME
+     *
+     * [realms]
+     *   KDC1.NAME = {
+     *     kdc = localhost:port1
+     *   }
+     *   KDC2.NAME = {
+     *     kdc = localhost:port2
+     *   }
+     * </pre>
+     * @param file the name of the file to write into
+     * @param kdc the first (and default) KDC
+     * @param more more KDCs or extra lines (in their appearing order) to
+     * insert into the krb5.conf file. This method reads each argument's type
+     * to determine what it's for. This argument can be empty.
+     * @throws java.io.IOException for any file output error
+     */
+    public static void saveConfig(String file, KDC kdc, Object... more)
+            throws IOException {
+        File f = new File(file);
+        StringBuffer sb = new StringBuffer();
+        sb.append("[libdefaults]\ndefault_realm = ");
+        sb.append(kdc.realm);
+        sb.append("\n");
+        for (Object o: more) {
+            if (o instanceof String) {
+                sb.append(o);
+                sb.append("\n");
+            }
+        }
+        sb.append("\n[realms]\n");
+        sb.append(realmLineForKDC(kdc));
+        for (Object o: more) {
+            if (o instanceof KDC) {
+                sb.append(realmLineForKDC((KDC)o));
+            }
+        }
+        FileOutputStream fos = new FileOutputStream(f);
+        fos.write(sb.toString().getBytes());
+        fos.close();
+    }
+
+    /**
+     * Returns the service port of the KDC server.
+     * @return the KDC service port
+     */
+    public int getPort() {
+        return port;
+    }
+
+    // Private helper methods
+
+    /**
+     * Private constructor, cannot be called outside.
+     * @param realm
+     */
+    private KDC(String realm) {
+        this.realm = realm;
+    }
+
+    /**
+     * A constructor that starts the KDC service also.
+     */
+    protected KDC(String realm, int port, boolean asDaemon)
+            throws IOException {
+        this(realm);
+        startServer(port, asDaemon);
+    }
+    /**
+     * Generates a 32-char random password
+     * @return the password
+     */
+    private static char[] randomPassword() {
+        char[] pass = new char[32];
+        for (int i=0; i<32; i++)
+            pass[i] = (char)secureRandom.nextInt();
+        return pass;
+    }
+
+    /**
+     * Generates a random key for the given encryption type.
+     * @param eType the encryption type
+     * @return the generated key
+     * @throws sun.security.krb5.KrbException for unknown/unsupported etype
+     */
+    private static EncryptionKey generateRandomKey(int eType)
+            throws KrbException  {
+        // Is 32 enough for AES256? I should have generated the keys directly
+        // but different cryptos have different rules on what keys are valid.
+        char[] pass = randomPassword();
+        String algo;
+        switch (eType) {
+            case EncryptedData.ETYPE_DES_CBC_MD5: algo = "DES"; break;
+            case EncryptedData.ETYPE_DES3_CBC_HMAC_SHA1_KD: algo = "DESede"; break;
+            case EncryptedData.ETYPE_AES128_CTS_HMAC_SHA1_96: algo = "AES128"; break;
+            case EncryptedData.ETYPE_ARCFOUR_HMAC: algo = "ArcFourHMAC"; break;
+            case EncryptedData.ETYPE_AES256_CTS_HMAC_SHA1_96: algo = "AES256"; break;
+            default: algo = "DES"; break;
+        }
+        return new EncryptionKey(pass, "NOTHING", algo);    // Silly
+    }
+
+    /**
+     * Returns the password for a given principal
+     * @param p principal
+     * @return the password
+     * @throws sun.security.krb5.KrbException when the principal is not inside
+     *         the database.
+     */
+    private char[] getPassword(PrincipalName p) throws KrbException {
+        char[] pass = passwords.get(p.getNameString());
+        if (pass == null) {
+            throw new KrbException(Krb5.KDC_ERR_C_PRINCIPAL_UNKNOWN);
+        }
+        return pass;
+    }
+
+    /**
+     * Returns the salt string for the principal. For normal users, the
+     * concatenation for the realm name and the sections of the principal;
+     * for krgtgt/A@B and krbtgt/B@A, always return AB (so that inter-realm
+     * principals have the same key).
+     * @param p principal
+     * @return the salt
+     */
+    private String getSalt(PrincipalName p) {
+        String[] ns = p.getNameStrings();
+        if (ns[0].equals("krbtgt") && ns.length > 1) {
+            // Shared cross-realm keys must be the same
+            if (ns[1].compareTo(realm) < 0) {
+                return ns[1] + realm;
+            } else {
+                return realm + ns[1];
+            }
+        } else {
+            String s = getRealm();
+            for (String n: p.getNameStrings()) {
+                s += n;
+            }
+            return s;
+        }
+    }
+
+    /**
+     * Returns the key for a given principal of the given encryption type
+     * @param p the principal
+     * @param etype the encryption type
+     * @return the key
+     * @throws sun.security.krb5.KrbException for unknown/unsupported etype
+     */
+    private EncryptionKey keyForUser(PrincipalName p, int etype) throws KrbException {
+        try {
+            // Do not call EncryptionKey.acquireSecretKeys(), otherwise
+            // the krb5.conf config file would be loaded.
+            Method stringToKey = EncryptionKey.class.getDeclaredMethod("stringToKey", char[].class, String.class, byte[].class, Integer.TYPE);
+            stringToKey.setAccessible(true);
+            return new EncryptionKey((byte[]) stringToKey.invoke(null, getPassword(p), getSalt(p), null, etype), etype, null);
+        } catch (InvocationTargetException ex) {
+            KrbException ke = (KrbException)ex.getCause();
+            throw ke;
+        } catch (Exception e) {
+            throw new RuntimeException(e);  // should not happen
+        }
+    }
+
+    /**
+     * Processes an incoming request and generates a response.
+     * @param in the request
+     * @return the response
+     * @throws java.lang.Exception for various errors
+     */
+    private byte[] processMessage(byte[] in) throws Exception {
+        if ((in[0] & 0x1f) == Krb5.KRB_AS_REQ)
+            return processAsReq(in);
+        else
+            return processTgsReq(in);
+    }
+
+    /**
+     * Processes a TGS_REQ and generates a TGS_REP (or KRB_ERROR)
+     * @param in the request
+     * @return the response
+     * @throws java.lang.Exception for various errors
+     */
+    private byte[] processTgsReq(byte[] in) throws Exception {
+        TGSReq tgsReq = new TGSReq(in);
+        try {
+            System.out.println(realm + "> " + tgsReq.reqBody.cname +
+                    " sends TGS-REQ for " +
+                    tgsReq.reqBody.sname);
+            KDCReqBody body = tgsReq.reqBody;
+            int etype = 0;
+
+            // Reflection: PAData[] pas = tgsReq.pAData;
+            Field f = KDCReq.class.getDeclaredField("pAData");
+            f.setAccessible(true);
+            PAData[] pas = (PAData[])f.get(tgsReq);
+
+            Ticket tkt = null;
+            EncTicketPart etp = null;
+            if (pas == null || pas.length == 0) {
+                throw new KrbException(Krb5.KDC_ERR_PADATA_TYPE_NOSUPP);
+            } else {
+                for (PAData pa: pas) {
+                    if (pa.getType() == Krb5.PA_TGS_REQ) {
+                        APReq apReq = new APReq(pa.getValue());
+                        EncryptedData ed = apReq.authenticator;
+                        tkt = apReq.ticket;
+                        etype = tkt.encPart.getEType();
+                        EncryptionKey kkey = null;
+                        if (!tkt.realm.toString().equals(realm)) {
+                            if (tkt.sname.getNameString().equals("krbtgt/" + realm)) {
+                                kkey = keyForUser(new PrincipalName("krbtgt/" + tkt.realm.toString(), realm), etype);
+                            }
+                        } else {
+                            kkey = keyForUser(tkt.sname, etype);
+                        }
+                        byte[] bb = tkt.encPart.decrypt(kkey, KeyUsage.KU_TICKET);
+                        DerInputStream derIn = new DerInputStream(bb);
+                        DerValue der = derIn.getDerValue();
+                        etp = new EncTicketPart(der.toByteArray());
+                    }
+                }
+                if (tkt == null) {
+                    throw new KrbException(Krb5.KDC_ERR_PADATA_TYPE_NOSUPP);
+                }
+            }
+            EncryptionKey skey = keyForUser(body.sname, etype);
+            if (skey == null) {
+                throw new KrbException(Krb5.KDC_ERR_SUMTYPE_NOSUPP); // TODO
+            }
+
+            // Session key for original ticket, TGT
+            EncryptionKey ckey = etp.key;
+
+            // Session key for session with the service
+            EncryptionKey key = generateRandomKey(etype);
+
+            // Check time, TODO
+            KerberosTime till = body.till;
+            if (till == null) {
+                throw new KrbException(Krb5.KDC_ERR_NEVER_VALID); // TODO
+            } else if (till.isZero()) {
+                till = new KerberosTime(new Date().getTime() + 1000 * 3600 * 11);
+            }
+
+            boolean[] bFlags = new boolean[Krb5.TKT_OPTS_MAX+1];
+            if (body.kdcOptions.get(KDCOptions.FORWARDABLE)) {
+                bFlags[Krb5.TKT_OPTS_FORWARDABLE] = true;
+            }
+            if (body.kdcOptions.get(KDCOptions.FORWARDED) ||
+                    etp.flags.get(Krb5.TKT_OPTS_FORWARDED)) {
+                bFlags[Krb5.TKT_OPTS_FORWARDED] = true;
+            }
+            if (body.kdcOptions.get(KDCOptions.RENEWABLE)) {
+                bFlags[Krb5.TKT_OPTS_RENEWABLE] = true;
+                //renew = new KerberosTime(new Date().getTime() + 1000 * 3600 * 24 * 7);
+            }
+            if (body.kdcOptions.get(KDCOptions.PROXIABLE)) {
+                bFlags[Krb5.TKT_OPTS_PROXIABLE] = true;
+            }
+            if (body.kdcOptions.get(KDCOptions.POSTDATED)) {
+                bFlags[Krb5.TKT_OPTS_POSTDATED] = true;
+            }
+            if (body.kdcOptions.get(KDCOptions.ALLOW_POSTDATE)) {
+                bFlags[Krb5.TKT_OPTS_MAY_POSTDATE] = true;
+            }
+            bFlags[Krb5.TKT_OPTS_INITIAL] = true;
+
+            TicketFlags tFlags = new TicketFlags(bFlags);
+            EncTicketPart enc = new EncTicketPart(
+                    tFlags,
+                    key,
+                    etp.crealm,
+                    etp.cname,
+                    new TransitedEncoding(1, new byte[0]),  // TODO
+                    new KerberosTime(new Date()),
+                    body.from,
+                    till, body.rtime,
+                    body.addresses,
+                    null);
+            Ticket t = new Ticket(
+                    body.crealm,
+                    body.sname,
+                    new EncryptedData(skey, enc.asn1Encode(), KeyUsage.KU_TICKET)
+            );
+            EncTGSRepPart enc_part = new EncTGSRepPart(
+                    key,
+                    new LastReq(new LastReqEntry[]{
+                        new LastReqEntry(0, new KerberosTime(new Date().getTime() - 10000))
+                    }),
+                    body.getNonce(),    // TODO: detect replay
+                    new KerberosTime(new Date().getTime() + 1000 * 3600 * 24),
+                    // Next 5 and last MUST be same with ticket
+                    tFlags,
+                    new KerberosTime(new Date()),
+                    body.from,
+                    till, body.rtime,
+                    body.crealm,
+                    body.sname,
+                    body.addresses
+                    );
+            EncryptedData edata = new EncryptedData(ckey, enc_part.asn1Encode(), KeyUsage.KU_ENC_TGS_REP_PART_SESSKEY);
+            TGSRep tgsRep = new TGSRep(null,
+                    etp.crealm,
+                    etp.cname,
+                    t,
+                    edata);
+            System.out.println("     Return " + tgsRep.cname
+                    + " ticket for " + tgsRep.ticket.sname);
+
+            DerOutputStream out = new DerOutputStream();
+            out.write(DerValue.createTag(DerValue.TAG_APPLICATION,
+                    true, (byte)Krb5.KRB_TGS_REP), tgsRep.asn1Encode());
+            return out.toByteArray();
+        } catch (KrbException ke) {
+            ke.printStackTrace(System.out);
+            KRBError kerr = ke.getError();
+            KDCReqBody body = tgsReq.reqBody;
+            System.out.println("     Error " + ke.returnCode()
+                    + " " +ke.returnCodeMessage());
+            if (kerr == null) {
+                kerr = new KRBError(null, null, null,
+                        new KerberosTime(new Date()),
+                        0,
+                        ke.returnCode(),
+                        body.crealm, body.cname,
+                        new Realm(getRealm()), body.sname,
+                        KrbException.errorMessage(ke.returnCode()),
+                        null);
+            }
+            return kerr.asn1Encode();
+        }
+    }
+
+    /**
+     * Processes a AS_REQ and generates a AS_REP (or KRB_ERROR)
+     * @param in the request
+     * @return the response
+     * @throws java.lang.Exception for various errors
+     */
+    private byte[] processAsReq(byte[] in) throws Exception {
+        ASReq asReq = new ASReq(in);
+        int[] eTypes = null;
+        try {
+            System.out.println(realm + "> " + asReq.reqBody.cname +
+                    " sends AS-REQ for " +
+                    asReq.reqBody.sname);
+
+            KDCReqBody body = asReq.reqBody;
+
+            // Reflection: int[] eType = body.eType;
+            Field f = KDCReqBody.class.getDeclaredField("eType");
+            f.setAccessible(true);
+            eTypes = (int[])f.get(body);
+            int eType = eTypes[0];
+
+            EncryptionKey ckey = keyForUser(body.cname, eType);
+            EncryptionKey skey = keyForUser(body.sname, eType);
+            if (ckey == null) {
+                throw new KrbException(Krb5.KDC_ERR_ETYPE_NOSUPP);
+            }
+            if (skey == null) {
+                throw new KrbException(Krb5.KDC_ERR_SUMTYPE_NOSUPP); // TODO
+            }
+
+            // Session key
+            EncryptionKey key = generateRandomKey(eType);
+            // Check time, TODO
+            KerberosTime till = body.till;
+            if (till == null) {
+                throw new KrbException(Krb5.KDC_ERR_NEVER_VALID); // TODO
+            } else if (till.isZero()) {
+                till = new KerberosTime(new Date().getTime() + 1000 * 3600 * 11);
+            }
+            //body.from
+            boolean[] bFlags = new boolean[Krb5.TKT_OPTS_MAX+1];
+            if (body.kdcOptions.get(KDCOptions.FORWARDABLE)) {
+                bFlags[Krb5.TKT_OPTS_FORWARDABLE] = true;
+            }
+            if (body.kdcOptions.get(KDCOptions.RENEWABLE)) {
+                bFlags[Krb5.TKT_OPTS_RENEWABLE] = true;
+                //renew = new KerberosTime(new Date().getTime() + 1000 * 3600 * 24 * 7);
+            }
+            if (body.kdcOptions.get(KDCOptions.PROXIABLE)) {
+                bFlags[Krb5.TKT_OPTS_PROXIABLE] = true;
+            }
+            if (body.kdcOptions.get(KDCOptions.POSTDATED)) {
+                bFlags[Krb5.TKT_OPTS_POSTDATED] = true;
+            }
+            if (body.kdcOptions.get(KDCOptions.ALLOW_POSTDATE)) {
+                bFlags[Krb5.TKT_OPTS_MAY_POSTDATE] = true;
+            }
+            bFlags[Krb5.TKT_OPTS_INITIAL] = true;
+
+            f = KDCReq.class.getDeclaredField("pAData");
+            f.setAccessible(true);
+            PAData[] pas = (PAData[])f.get(asReq);
+            if (pas == null || pas.length == 0) {
+                Object preauth = options.get(Option.PREAUTH_REQUIRED);
+                if (preauth == null || preauth.equals(Boolean.TRUE)) {
+                    throw new KrbException(Krb5.KDC_ERR_PREAUTH_REQUIRED);
+                }
+            } else {
+                try {
+                    Constructor<EncryptedData> ctor = EncryptedData.class.getDeclaredConstructor(DerValue.class);
+                    ctor.setAccessible(true);
+                    EncryptedData data = ctor.newInstance(new DerValue(pas[0].getValue()));
+                    data.decrypt(ckey, KeyUsage.KU_PA_ENC_TS);
+                } catch (Exception e) {
+                    throw new KrbException(Krb5.KDC_ERR_PREAUTH_FAILED);
+                }
+                bFlags[Krb5.TKT_OPTS_PRE_AUTHENT] = true;
+            }
+
+            TicketFlags tFlags = new TicketFlags(bFlags);
+            EncTicketPart enc = new EncTicketPart(
+                    tFlags,
+                    key,
+                    body.crealm,
+                    body.cname,
+                    new TransitedEncoding(1, new byte[0]),
+                    new KerberosTime(new Date()),
+                    body.from,
+                    till, body.rtime,
+                    body.addresses,
+                    null);
+            Ticket t = new Ticket(
+                    body.crealm,
+                    body.sname,
+                    new EncryptedData(skey, enc.asn1Encode(), KeyUsage.KU_TICKET)
+            );
+            EncASRepPart enc_part = new EncASRepPart(
+                    key,
+                    new LastReq(new LastReqEntry[]{
+                        new LastReqEntry(0, new KerberosTime(new Date().getTime() - 10000))
+                    }),
+                    body.getNonce(),    // TODO: detect replay?
+                    new KerberosTime(new Date().getTime() + 1000 * 3600 * 24),
+                    // Next 5 and last MUST be same with ticket
+                    tFlags,
+                    new KerberosTime(new Date()),
+                    body.from,
+                    till, body.rtime,
+                    body.crealm,
+                    body.sname,
+                    body.addresses
+                    );
+            EncryptedData edata = new EncryptedData(ckey, enc_part.asn1Encode(), KeyUsage.KU_ENC_AS_REP_PART);
+            ASRep asRep = new ASRep(null,
+                    body.crealm,
+                    body.cname,
+                    t,
+                    edata);
+
+            System.out.println("     Return " + asRep.cname
+                    + " ticket for " + asRep.ticket.sname);
+
+            DerOutputStream out = new DerOutputStream();
+            out.write(DerValue.createTag(DerValue.TAG_APPLICATION,
+                    true, (byte)Krb5.KRB_AS_REP), asRep.asn1Encode());
+            return out.toByteArray();
+        } catch (KrbException ke) {
+            ke.printStackTrace(System.out);
+            KRBError kerr = ke.getError();
+            KDCReqBody body = asReq.reqBody;
+            System.out.println("     Error " + ke.returnCode()
+                    + " " +ke.returnCodeMessage());
+            byte[] eData = null;
+            if (kerr == null) {
+                if (ke.returnCode() == Krb5.KDC_ERR_PREAUTH_REQUIRED ||
+                        ke.returnCode() == Krb5.KDC_ERR_PREAUTH_FAILED) {
+                    PAData pa;
+
+                    ETypeInfo2 ei2 = new ETypeInfo2(eTypes[0], null, null);
+                    DerOutputStream eid = new DerOutputStream();
+                    eid.write(DerValue.tag_Sequence, ei2.asn1Encode());
+
+                    pa = new PAData(Krb5.PA_ETYPE_INFO2, eid.toByteArray());
+
+                    DerOutputStream bytes = new DerOutputStream();
+                    bytes.write(new PAData(Krb5.PA_ENC_TIMESTAMP, new byte[0]).asn1Encode());
+                    bytes.write(pa.asn1Encode());
+
+                    boolean allOld = true;
+                    for (int i: eTypes) {
+                        if (i == EncryptedData.ETYPE_AES128_CTS_HMAC_SHA1_96 ||
+                                i == EncryptedData.ETYPE_AES256_CTS_HMAC_SHA1_96) {
+                            allOld = false;
+                            break;
+                        }
+                    }
+                    if (allOld) {
+                        ETypeInfo ei = new ETypeInfo(eTypes[0], null);
+                        eid = new DerOutputStream();
+                        eid.write(DerValue.tag_Sequence, ei.asn1Encode());
+                        pa = new PAData(Krb5.PA_ETYPE_INFO, eid.toByteArray());
+                        bytes.write(pa.asn1Encode());
+                    }
+                    DerOutputStream temp = new DerOutputStream();
+                    temp.write(DerValue.tag_Sequence, bytes);
+                    eData = temp.toByteArray();
+                }
+                kerr = new KRBError(null, null, null,
+                        new KerberosTime(new Date()),
+                        0,
+                        ke.returnCode(),
+                        body.crealm, body.cname,
+                        new Realm(getRealm()), body.sname,
+                        KrbException.errorMessage(ke.returnCode()),
+                        eData);
+            }
+            return kerr.asn1Encode();
+        }
+    }
+
+    /**
+     * Generates a line for a KDC to put inside [realms] of krb5.conf
+     * @param kdc the KDC
+     * @return REALM.NAME = { kdc = localhost:port }
+     */
+    private static String realmLineForKDC(KDC kdc) {
+        return String.format("  %s = {\n    kdc = localhost:%d\n  }\n", kdc.realm, kdc.port);
+    }
+
+    /**
+     * Start the KDC service. This server listens on both UDP and TCP using
+     * the same port number. It uses three threads to deal with requests.
+     * They can be set to daemon threads if requested.
+     * @param port the port number to listen to. If zero, a random available
+     *  port no less than 8000 will be chosen and used.
+     * @param asDaemon true if the KDC threads should be daemons
+     * @throws java.io.IOException for any communication error
+     */
+    protected void startServer(int port, boolean asDaemon) throws IOException {
+        DatagramSocket u1 = null;
+        ServerSocket t1 = null;
+        if (port > 0) {
+            u1 = new DatagramSocket(port, InetAddress.getByName("127.0.0.1"));
+            t1 = new ServerSocket(port);
+        } else {
+            while (true) {
+                // Try to find a port number that's both TCP and UDP free
+                try {
+                    port = 8000 + new java.util.Random().nextInt(10000);
+                    u1 = null;
+                    u1 = new DatagramSocket(port, InetAddress.getByName("127.0.0.1"));
+                    t1 = new ServerSocket(port);
+                    break;
+                } catch (Exception e) {
+                    if (u1 != null) u1.close();
+                }
+            }
+        }
+        final DatagramSocket udp = u1;
+        final ServerSocket tcp = t1;
+        System.out.println("Start KDC on " + port);
+
+        this.port = port;
+
+        // The UDP consumer
+        Thread thread = new Thread() {
+            public void run() {
+                while (true) {
+                    try {
+                        byte[] inbuf = new byte[8192];
+                        DatagramPacket p = new DatagramPacket(inbuf, inbuf.length);
+                        udp.receive(p);
+                        System.out.println("-----------------------------------------------");
+                        System.out.println(">>>>> UDP packet received");
+                        q.put(new Job(processMessage(Arrays.copyOf(inbuf, p.getLength())), udp, p));
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+        };
+        thread.setDaemon(asDaemon);
+        thread.start();
+
+        // The TCP consumer
+        thread = new Thread() {
+            public void run() {
+                while (true) {
+                    try {
+                        Socket socket = tcp.accept();
+                        System.out.println("-----------------------------------------------");
+                        System.out.println(">>>>> TCP connection established");
+                        DataInputStream in = new DataInputStream(socket.getInputStream());
+                        DataOutputStream out = new DataOutputStream(socket.getOutputStream());
+                        byte[] token = new byte[in.readInt()];
+                        in.readFully(token);
+                        q.put(new Job(processMessage(token), socket, out));
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+        };
+        thread.setDaemon(asDaemon);
+        thread.start();
+
+        // The dispatcher
+        thread = new Thread() {
+            public void run() {
+                while (true) {
+                    try {
+                        q.take().send();
+                    } catch (Exception e) {
+                    }
+                }
+            }
+        };
+        thread.setDaemon(true);
+        thread.start();
+    }
+
+    /**
+     * Helper class to encapsulate a job in a KDC.
+     */
+    private static class Job {
+        byte[] token;           // The received request at creation time and
+                                // the response at send time
+        Socket s;               // The TCP socket from where the request comes
+        DataOutputStream out;   // The OutputStream of the TCP socket
+        DatagramSocket s2;      // The UDP socket from where the request comes
+        DatagramPacket dp;      // The incoming UDP datagram packet
+        boolean useTCP;         // Whether TCP or UDP is used
+
+        // Creates a job object for TCP
+        Job(byte[] token, Socket s, DataOutputStream out) {
+            useTCP = true;
+            this.token = token;
+            this.s = s;
+            this.out = out;
+        }
+
+        // Creates a job object for UDP
+        Job(byte[] token, DatagramSocket s2, DatagramPacket dp) {
+            useTCP = false;
+            this.token = token;
+            this.s2 = s2;
+            this.dp = dp;
+        }
+
+        // Sends the output back to the client
+        void send() {
+            try {
+                if (useTCP) {
+                    System.out.println(">>>>> TCP request honored");
+                    out.writeInt(token.length);
+                    out.write(token);
+                    s.close();
+                } else {
+                    System.out.println(">>>>> UDP request honored");
+                    s2.send(new DatagramPacket(token, token.length, dp.getAddress(), dp.getPort()));
+                }
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+    }
+}
diff -r 8b2d7e577d4a -r 3f051f3ba5bb test/sun/security/krb5/auto/KerberosHashEqualsTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ openjdk/jdk/test/sun/security/krb5/auto/KerberosHashEqualsTest.java	Fri Oct 17 13:02:00 2008 +0800
@@ -0,0 +1,173 @@
+/*
+ * Copyright 2005-2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 4641821
+ * @summary hashCode() and equals() for KerberosKey and KerberosTicket
+ */
+
+import java.net.InetAddress;
+import java.util.Date;
+import javax.security.auth.kerberos.KerberosKey;
+import javax.security.auth.kerberos.KerberosPrincipal;
+import javax.security.auth.kerberos.KerberosTicket;
+
+public class KerberosHashEqualsTest {
+    public static void main(String[] args) throws Exception {
+        new OneKDC(null);
+        new KerberosHashEqualsTest().check();
+    }
+
+    void checkSame(Object o1, Object o2) {
+        if(!o1.equals(o2)) {
+            throw new RuntimeException("equals() fails");
+        }
+        if(o1.hashCode() != o2.hashCode()) {
+            throw new RuntimeException("hashCode() not same");
+        }
+    }
+
+    void checkNotSame(Object o1, Object o2) {
+        if(o1.equals(o2)) {
+            throw new RuntimeException("equals() succeeds");
+        }
+    }
+
+    void check() throws Exception {
+
+        // The key part:
+        // new KerberosKey(principal, bytes, keyType, version)
+
+        KerberosKey k1, k2;
+        KerberosPrincipal CLIENT = new KerberosPrincipal("client");
+        KerberosPrincipal SERVER = new KerberosPrincipal("server");
+        byte[] PASS = "pass".getBytes();
+
+        k1 = new KerberosKey(CLIENT, PASS, 1, 1);
+        k2 = new KerberosKey(CLIENT, PASS, 1, 1);
+        checkSame(k1, k1);  // me is me
+        checkSame(k1, k2);  // same
+
+        // A destroyed key doesn't equal to any key
+        k2.destroy();
+        checkNotSame(k1, k2);
+        checkNotSame(k2, k1);
+        k1.destroy();
+        checkNotSame(k1, k2);   // even if they are both destroyed
+        checkNotSame(k2, k1);
+        checkSame(k2, k2);
+
+        // a little difference means not equal
+        k1 = new KerberosKey(CLIENT, PASS, 1, 1);
+        k2 = new KerberosKey(SERVER, PASS, 1, 1);
+        checkNotSame(k1, k2);   // Different principal name
+
+        k2 = new KerberosKey(CLIENT, "ssap".getBytes(), 1, 1);
+        checkNotSame(k1, k2);   // Different password
+
+        k2 = new KerberosKey(CLIENT, PASS, 2, 1);
+        checkNotSame(k1, k2);   // Different keytype
+
+        k2 = new KerberosKey(CLIENT, PASS, 1, 2);
+        checkNotSame(k1, k2);   // Different version
+
+        k2 = new KerberosKey(null, PASS, 1, 2);
+        checkNotSame(k1, k2);   // null is not non-null
+
+        k1 = new KerberosKey(null, PASS, 1, 2);
+        checkSame(k1, k2);      // null is null
+
+        checkNotSame(k1, "Another Object");
+
+        // The ticket part:
+        // new KerberosTicket(asn1 bytes, client, server, session key, type, flags,
+        //      auth, start, end, renewUntil times, address)
+
+        KerberosTicket t1, t2;
+
+        byte[] ASN1 = "asn1".getBytes();
+        boolean[] FORWARDABLE = new boolean[] {true, true};
+        boolean[] ALLTRUE = new boolean[] {true, true, true, true, true, true, true, true, true, true};
+        Date D0 = new Date(0);
+
+        t1 = new KerberosTicket(ASN1, CLIENT, SERVER, PASS, 1, FORWARDABLE, D0, D0, D0, D0, null);
+        t2 = new KerberosTicket(ASN1, CLIENT, SERVER, PASS, 1, FORWARDABLE, D0, D0, D0, D0, null);
+        checkSame(t1, t1);
+        checkSame(t1, t2);
+
+        // destroyed tickets doesn't equal to each other
+        t1.destroy();
+        checkNotSame(t1, t2);
+        checkNotSame(t2, t1);
+
+        t2.destroy();
+        checkNotSame(t1, t2);   // even if they are both destroyed
+        checkNotSame(t2, t1);
+
+        checkSame(t2, t2);  // unless they are the same object
+
+        // a little difference means not equal
+        t1 = new KerberosTicket(ASN1, CLIENT, SERVER, PASS, 1, FORWARDABLE, D0, D0, D0, D0, null);
+        t2 = new KerberosTicket("asn11".getBytes(), CLIENT, SERVER, PASS, 1, FORWARDABLE, D0, D0, D0, D0, null);
+        checkNotSame(t1, t2);   // Different ASN1 encoding
+
+        t2 = new KerberosTicket(ASN1, new KerberosPrincipal("client1"), SERVER, PASS, 1, FORWARDABLE, D0, D0, D0, D0, null);
+        checkNotSame(t1, t2);   // Different client
+
+        t2 = new KerberosTicket(ASN1, CLIENT, new KerberosPrincipal("server1"), PASS, 1, FORWARDABLE, D0, D0, D0, D0, null);
+        checkNotSame(t1, t2);   // Different server
+
+        t2 = new KerberosTicket(ASN1, CLIENT, SERVER, "pass1".getBytes(), 1, FORWARDABLE, D0, D0, D0, D0, null);
+        checkNotSame(t1, t2);   // Different session key
+
+        t2 = new KerberosTicket(ASN1, CLIENT, SERVER, PASS, 2, FORWARDABLE, D0, D0, D0, D0, null);
+        checkNotSame(t1, t2);   // Different key type
+
+        t2 = new KerberosTicket(ASN1, CLIENT, SERVER, PASS, 1, new boolean[] {true, false}, D0, D0, D0, D0, null);
+        checkNotSame(t1, t2);   // Different flags, not FORWARDABLE
+
+        t2 = new KerberosTicket(ASN1, CLIENT, SERVER, PASS, 1, FORWARDABLE, new Date(1), D0, D0, D0, null);
+        checkNotSame(t1, t2);   // Different authtime
+
+        t2 = new KerberosTicket(ASN1, CLIENT, SERVER, PASS, 1, FORWARDABLE, D0, new Date(1), D0, D0, null);
+        checkNotSame(t1, t2);   // Different starttime
+
+        t2 = new KerberosTicket(ASN1, CLIENT, SERVER, PASS, 1, FORWARDABLE, D0, D0, new Date(1), D0, null);
+        checkNotSame(t1, t2);   // Different endtime
+
+        t2 = new KerberosTicket(ASN1, CLIENT, SERVER, PASS, 1, FORWARDABLE, D0, D0, D0, D0, new InetAddress[2]);
+        checkNotSame(t1, t2);   // Different client addresses
+
+        t2 = new KerberosTicket(ASN1, CLIENT, SERVER, PASS, 1, FORWARDABLE, D0, D0, D0, new Date(1), null);
+        t1 = new KerberosTicket(ASN1, CLIENT, SERVER, PASS, 1, FORWARDABLE, D0, D0, D0, new Date(2), null);
+        checkSame(t1, t2);      // renewtill is ignored when RENEWABLE ticket flag is not set.
+
+        t2 = new KerberosTicket(ASN1, CLIENT, SERVER, PASS, 1, ALLTRUE, D0, D0, D0, new Date(1), null);
+        t1 = new KerberosTicket(ASN1, CLIENT, SERVER, PASS, 1, ALLTRUE, D0, D0, D0, new Date(2), null);
+        checkNotSame(t1, t2);   // renewtill is used when RENEWABLE is set.
+
+        checkNotSame(t1, "Another Object");
+        System.out.println("Good!");
+    }
+}
diff -r 8b2d7e577d4a -r 3f051f3ba5bb test/sun/security/krb5/auto/OneKDC.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ openjdk/jdk/test/sun/security/krb5/auto/OneKDC.java	Fri Oct 17 13:02:00 2008 +0800
@@ -0,0 +1,140 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.security.Security;
+import javax.security.auth.callback.Callback;
+import javax.security.auth.callback.CallbackHandler;
+import javax.security.auth.callback.NameCallback;
+import javax.security.auth.callback.PasswordCallback;
+import sun.security.krb5.Config;
+
+/**
+ * This class starts a simple KDC with one realm, several typical principal
+ * names, generates delete-on-exit krb5.conf and keytab files, and setup
+ * system properties for them. There's also a helper method to generate a
+ * JAAS login config file that can be used for JAAS or JGSS apps.
+ * <p>
+ * Just call this line to start everything:
+ * <pre>
+ * new OneKDC(null).writeJaasConf();
+ * </pre>
+ */
+public class OneKDC extends KDC {
+
+    public static final String USER = "dummy";
+    public static final char[] PASS = "bogus".toCharArray();
+    public static final String SERVER = "server/localhost";
+    public static final String BACKEND = "backend/localhost";
+    public static final String KRB5_CONF = "localkdc-krb5.conf";
+    public static final String KTAB = "localkdc.ktab";
+    public static final String JAAS_CONF = "localkdc-jaas.conf";
+    public static final String REALM = "RABBIT.HOLE";
+
+    /**
+     * Creates the KDC and starts it.
+     * @param etype Encryption type, null if not specified
+     * @throws java.lang.Exception if there's anything wrong
+     */
+    public OneKDC(String etype) throws Exception {
+        super(REALM, 0, true);
+        addPrincipal(USER, PASS);
+        addPrincipalRandKey("krbtgt/" + REALM);
+        addPrincipalRandKey(SERVER);
+        addPrincipalRandKey(BACKEND);
+        KDC.saveConfig(KRB5_CONF, this,
+                "forwardable = true",
+                "default_keytab_name = " + KTAB,
+                etype == null ? "" : "default_tkt_enctypes=" + etype + "\ndefault_tgs_enctypes=" + etype);
+        System.setProperty("java.security.krb5.conf", KRB5_CONF);
+        // Whatever krb5.conf had been loaded before, we reload ours now.
+        Config.refresh();
+
+        writeKtab(KTAB);
+        new File(KRB5_CONF).deleteOnExit();
+        new File(KTAB).deleteOnExit();
+    }
+
+    /**
+     * Writes a JAAS login config file, which contains as many as useful
+     * entries, including JGSS style initiator/acceptor and normal JAAS
+     * entries with names using existing OneKDC principals.
+     * @throws java.lang.Exception if anything goes wrong
+     */
+    public void writeJAASConf() throws IOException {
+        System.setProperty("java.security.auth.login.config", JAAS_CONF);
+        File f = new File(JAAS_CONF);
+        FileOutputStream fos = new FileOutputStream(f);
+        fos.write((
+                "com.sun.security.jgss.krb5.initiate {\n" +
+                "    com.sun.security.auth.module.Krb5LoginModule required;\n};\n" +
+                "com.sun.security.jgss.krb5.accept {\n" +
+                "    com.sun.security.auth.module.Krb5LoginModule required\n" +
+                "    principal=\"" + SERVER + "\"\n" +
+                "    useKeyTab=true\n" +
+                "    isInitiator=false\n" +
+                "    storeKey=true;\n};\n" +
+                "client {\n" +
+                "    com.sun.security.auth.module.Krb5LoginModule required;\n};\n" +
+                "server {\n" +
+                "    com.sun.security.auth.module.Krb5LoginModule required\n" +
+                "    principal=\"" + SERVER + "\"\n" +
+                "    useKeyTab=true\n" +
+                "    storeKey=true;\n};\n" +
+                "backend {\n" +
+                "    com.sun.security.auth.module.Krb5LoginModule required\n" +
+                "    principal=\"" + BACKEND + "\"\n" +
+                "    useKeyTab=true\n" +
+                "    storeKey=true\n" +
+                "    isInitiator=false;\n};\n"
+                ).getBytes());
+        fos.close();
+        f.deleteOnExit();
+        Security.setProperty("auth.login.defaultCallbackHandler", "OneKDC$CallbackForClient");
+    }
+
+    /**
+     * The default callback handler for JAAS login. Note that this handler is
+     * hard coded to provide only info for USER1. If you need to provide info
+     * for another principal, please use Context.fromUserPass() instead.
+     */
+    public static class CallbackForClient implements CallbackHandler {
+        public void handle(Callback[] callbacks) {
+            String user = OneKDC.USER;
+            char[] pass = OneKDC.PASS;
+            for (Callback callback : callbacks) {
+                if (callback instanceof NameCallback) {
+                    System.out.println("Callback for name: " + user);
+                    ((NameCallback) callback).setName(user);
+                }
+                if (callback instanceof PasswordCallback) {
+                    System.out.println("Callback for pass: "
+                            + new String(pass));
+                    ((PasswordCallback) callback).setPassword(pass);
+                }
+            }
+        }
+    }
+}
diff -r 8b2d7e577d4a -r 3f051f3ba5bb test/sun/security/krb5/auto/basic.sh
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ openjdk/jdk/test/sun/security/krb5/auto/basic.sh	Fri Oct 17 13:02:00 2008 +0800
@@ -0,0 +1,65 @@
+#
+# Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+# CA 95054 USA or visit www.sun.com if you need additional information or
+# have any questions.
+#
+
+# @test
+# @bug 6706974
+# @summary Add krb5 test infrastructure
+# @run shell/timeout=300 basic.sh
+#
+
+if [ "${TESTSRC}" = "" ] ; then
+  TESTSRC="."
+fi
+if [ "${TESTJAVA}" = "" ] ; then
+  echo "TESTJAVA not set.  Test cannot execute."
+  echo "FAILED!!!"
+  exit 1
+fi
+
+# set platform-dependent variables
+OS=`uname -s`
+case "$OS" in
+  Windows_* )
+    FS="\\"
+    ;;
+  * )
+    FS="/"
+    ;;
+esac
+
+${TESTJAVA}${FS}bin${FS}javac -d . \
+    ${TESTSRC}${FS}BasicKrb5Test.java \
+    ${TESTSRC}${FS}KDC.java \
+    ${TESTSRC}${FS}OneKDC.java \
+    ${TESTSRC}${FS}Action.java \
+    ${TESTSRC}${FS}Context.java \
+    || exit 10
+${TESTJAVA}${FS}bin${FS}java -Dtest.src=$TESTSRC BasicKrb5Test || exit 100
+${TESTJAVA}${FS}bin${FS}java -Dtest.src=$TESTSRC BasicKrb5Test des-cbc-crc || exit 1
+${TESTJAVA}${FS}bin${FS}java -Dtest.src=$TESTSRC BasicKrb5Test des-cbc-md5 || exit 3
+${TESTJAVA}${FS}bin${FS}java -Dtest.src=$TESTSRC BasicKrb5Test des3-cbc-sha1 || exit 16
+${TESTJAVA}${FS}bin${FS}java -Dtest.src=$TESTSRC BasicKrb5Test aes128-cts || exit 17
+${TESTJAVA}${FS}bin${FS}java -Dtest.src=$TESTSRC BasicKrb5Test aes256-cts || exit 18
+${TESTJAVA}${FS}bin${FS}java -Dtest.src=$TESTSRC BasicKrb5Test rc4-hmac || exit 23
+
+exit 0