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
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
|
/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright 1993 OpenVision Technologies, Inc., All Rights Reserved
*
* $Header$
*/
#include "k5-int.h"
#include <sys/time.h>
#include <kadm5/admin.h>
#include <kdb.h>
#include "server_internal.h"
#ifdef USE_PASSWORD_SERVER
#include <sys/wait.h>
#include <signal.h>
#endif
#include <krb5/kadm5_hook_plugin.h>
#ifdef USE_VALGRIND
#include <valgrind/memcheck.h>
#else
#define VALGRIND_CHECK_DEFINED(LVALUE) ((void)0)
#endif
extern krb5_principal master_princ;
extern krb5_principal hist_princ;
extern krb5_keyblock master_keyblock;
extern krb5_db_entry master_db;
static int decrypt_key_data(krb5_context context,
int n_key_data, krb5_key_data *key_data,
krb5_keyblock **keyblocks, int *n_keys);
/*
* XXX Functions that ought to be in libkrb5.a, but aren't.
*/
kadm5_ret_t krb5_copy_key_data_contents(context, from, to)
krb5_context context;
krb5_key_data *from, *to;
{
int i, idx;
*to = *from;
idx = (from->key_data_ver == 1 ? 1 : 2);
for (i = 0; i < idx; i++) {
if ( from->key_data_length[i] ) {
to->key_data_contents[i] = malloc(from->key_data_length[i]);
if (to->key_data_contents[i] == NULL) {
for (i = 0; i < idx; i++)
zapfree(to->key_data_contents[i], to->key_data_length[i]);
return ENOMEM;
}
memcpy(to->key_data_contents[i], from->key_data_contents[i],
from->key_data_length[i]);
}
}
return 0;
}
static krb5_tl_data *dup_tl_data(krb5_tl_data *tl)
{
krb5_tl_data *n;
n = (krb5_tl_data *) malloc(sizeof(krb5_tl_data));
if (n == NULL)
return NULL;
n->tl_data_contents = malloc(tl->tl_data_length);
if (n->tl_data_contents == NULL) {
free(n);
return NULL;
}
memcpy(n->tl_data_contents, tl->tl_data_contents, tl->tl_data_length);
n->tl_data_type = tl->tl_data_type;
n->tl_data_length = tl->tl_data_length;
n->tl_data_next = NULL;
return n;
}
/* This is in lib/kdb/kdb_cpw.c, but is static */
static void cleanup_key_data(context, count, data)
krb5_context context;
int count;
krb5_key_data * data;
{
int i;
for (i = 0; i < count; i++)
krb5_free_key_data_contents(context, &data[i]);
free(data);
}
/* Check whether a ks_tuple is present in an array of ks_tuples. */
static krb5_boolean
ks_tuple_present(int n_ks_tuple, krb5_key_salt_tuple *ks_tuple,
krb5_key_salt_tuple *looking_for)
{
int i;
for (i = 0; i < n_ks_tuple; i++) {
if (ks_tuple[i].ks_enctype == looking_for->ks_enctype &&
ks_tuple[i].ks_salttype == looking_for->ks_salttype)
return TRUE;
}
return FALSE;
}
/* Fetch a policy if it exists; set *have_pol_out appropriately. Return
* success whether or not the policy exists. */
static kadm5_ret_t
get_policy(kadm5_server_handle_t handle, const char *name,
kadm5_policy_ent_t policy_out, krb5_boolean *have_pol_out)
{
kadm5_ret_t ret;
*have_pol_out = FALSE;
if (name == NULL)
return 0;
ret = kadm5_get_policy(handle->lhandle, (char *)name, policy_out);
if (ret == 0)
*have_pol_out = TRUE;
return (ret == KADM5_UNK_POLICY) ? 0 : ret;
}
/*
* Apply the -allowedkeysalts policy (see kadmin(1)'s addpol/modpol
* commands). We use the allowed key/salt tuple list as a default if
* no ks tuples as provided by the caller. We reject lists that include
* key/salts outside the policy. We re-order the requested ks tuples
* (which may be a subset of the policy) to reflect the policy order.
*/
static kadm5_ret_t
apply_keysalt_policy(kadm5_server_handle_t handle, const char *policy,
int n_ks_tuple, krb5_key_salt_tuple *ks_tuple,
int *new_n_kstp, krb5_key_salt_tuple **new_kstp)
{
kadm5_ret_t ret;
kadm5_policy_ent_rec polent;
krb5_boolean have_polent;
int ak_n_ks_tuple = 0;
int new_n_ks_tuple = 0;
krb5_key_salt_tuple *ak_ks_tuple = NULL;
krb5_key_salt_tuple *new_ks_tuple = NULL;
krb5_key_salt_tuple *subset;
int i, m;
if (new_n_kstp != NULL) {
*new_n_kstp = 0;
*new_kstp = NULL;
}
memset(&polent, 0, sizeof(polent));
ret = get_policy(handle, policy, &polent, &have_polent);
if (ret)
goto cleanup;
if (polent.allowed_keysalts == NULL) {
/* Requested keysalts allowed or default to supported_enctypes. */
if (n_ks_tuple == 0) {
/* Default to supported_enctypes. */
n_ks_tuple = handle->params.num_keysalts;
ks_tuple = handle->params.keysalts;
}
/* Dup the requested or defaulted keysalt tuples. */
new_ks_tuple = malloc(n_ks_tuple * sizeof(*new_ks_tuple));
if (new_ks_tuple == NULL) {
ret = ENOMEM;
goto cleanup;
}
memcpy(new_ks_tuple, ks_tuple, n_ks_tuple * sizeof(*new_ks_tuple));
new_n_ks_tuple = n_ks_tuple;
ret = 0;
goto cleanup;
}
ret = krb5_string_to_keysalts(polent.allowed_keysalts,
",", /* Tuple separators */
NULL, /* Key/salt separators */
0, /* No duplicates */
&ak_ks_tuple,
&ak_n_ks_tuple);
/*
* Malformed policy? Shouldn't happen, but it's remotely possible
* someday, so we don't assert, just bail.
*/
if (ret)
goto cleanup;
/* Check that the requested ks_tuples are within policy, if we have one. */
for (i = 0; i < n_ks_tuple; i++) {
if (!ks_tuple_present(ak_n_ks_tuple, ak_ks_tuple, &ks_tuple[i])) {
ret = KADM5_BAD_KEYSALTS;
goto cleanup;
}
}
/* Have policy but no ks_tuple input? Output the policy. */
if (n_ks_tuple == 0) {
new_n_ks_tuple = ak_n_ks_tuple;
new_ks_tuple = ak_ks_tuple;
ak_ks_tuple = NULL;
goto cleanup;
}
/*
* Now filter the policy ks tuples by the requested ones so as to
* preserve in the requested sub-set the relative ordering from the
* policy. We could optimize this (if (n_ks_tuple == ak_n_ks_tuple)
* then skip this), but we don't bother.
*/
subset = calloc(n_ks_tuple, sizeof(*subset));
if (subset == NULL) {
ret = ENOMEM;
goto cleanup;
}
for (m = 0, i = 0; i < ak_n_ks_tuple && m < n_ks_tuple; i++) {
if (ks_tuple_present(n_ks_tuple, ks_tuple, &ak_ks_tuple[i]))
subset[m++] = ak_ks_tuple[i];
}
new_ks_tuple = subset;
new_n_ks_tuple = m;
ret = 0;
cleanup:
if (have_polent)
kadm5_free_policy_ent(handle->lhandle, &polent);
free(ak_ks_tuple);
if (new_n_kstp != NULL) {
*new_n_kstp = new_n_ks_tuple;
*new_kstp = new_ks_tuple;
} else {
free(new_ks_tuple);
}
return ret;
}
/*
* Set *passptr to NULL if the request looks like the first part of a krb5 1.6
* addprinc -randkey operation. The krb5 1.6 dummy password for these requests
* was invalid UTF-8, which runs afoul of the arcfour string-to-key.
*/
static void
check_1_6_dummy(kadm5_principal_ent_t entry, long mask,
int n_ks_tuple, krb5_key_salt_tuple *ks_tuple, char **passptr)
{
int i;
char *password = *passptr;
/* Old-style randkey operations disallowed tickets to start. */
if (password == NULL || !(mask & KADM5_ATTRIBUTES) ||
!(entry->attributes & KRB5_KDB_DISALLOW_ALL_TIX))
return;
/* The 1.6 dummy password was the octets 1..255. */
for (i = 0; (unsigned char) password[i] == i + 1; i++);
if (password[i] != '\0' || i != 255)
return;
/* This will make the caller use a random password instead. */
*passptr = NULL;
}
/* Return the number of keys with the newest kvno. Assumes that all key data
* with the newest kvno are at the front of the key data array. */
static int
count_new_keys(int n_key_data, krb5_key_data *key_data)
{
int n;
for (n = 1; n < n_key_data; n++) {
if (key_data[n - 1].key_data_kvno != key_data[n].key_data_kvno)
return n;
}
return n_key_data;
}
kadm5_ret_t
kadm5_create_principal(void *server_handle,
kadm5_principal_ent_t entry, long mask,
char *password)
{
return
kadm5_create_principal_3(server_handle, entry, mask,
0, NULL, password);
}
kadm5_ret_t
kadm5_create_principal_3(void *server_handle,
kadm5_principal_ent_t entry, long mask,
int n_ks_tuple, krb5_key_salt_tuple *ks_tuple,
char *password)
{
krb5_db_entry *kdb;
osa_princ_ent_rec adb;
kadm5_policy_ent_rec polent;
krb5_boolean have_polent = FALSE;
krb5_int32 now;
krb5_tl_data *tl_data_tail;
unsigned int ret;
kadm5_server_handle_t handle = server_handle;
krb5_keyblock *act_mkey;
krb5_kvno act_kvno;
int new_n_ks_tuple = 0;
krb5_key_salt_tuple *new_ks_tuple = NULL;
CHECK_HANDLE(server_handle);
krb5_clear_error_message(handle->context);
check_1_6_dummy(entry, mask, n_ks_tuple, ks_tuple, &password);
/*
* Argument sanity checking, and opening up the DB
*/
if (entry == NULL)
return EINVAL;
if(!(mask & KADM5_PRINCIPAL) || (mask & KADM5_MOD_NAME) ||
(mask & KADM5_MOD_TIME) || (mask & KADM5_LAST_PWD_CHANGE) ||
(mask & KADM5_MKVNO) || (mask & KADM5_AUX_ATTRIBUTES) ||
(mask & KADM5_LAST_SUCCESS) || (mask & KADM5_LAST_FAILED) ||
(mask & KADM5_FAIL_AUTH_COUNT))
return KADM5_BAD_MASK;
if ((mask & KADM5_KEY_DATA) && entry->n_key_data != 0)
return KADM5_BAD_MASK;
if((mask & KADM5_POLICY) && entry->policy == NULL)
return KADM5_BAD_MASK;
if((mask & KADM5_POLICY) && (mask & KADM5_POLICY_CLR))
return KADM5_BAD_MASK;
if((mask & ~ALL_PRINC_MASK))
return KADM5_BAD_MASK;
if (mask & KADM5_TL_DATA) {
for (tl_data_tail = entry->tl_data; tl_data_tail != NULL;
tl_data_tail = tl_data_tail->tl_data_next) {
if (tl_data_tail->tl_data_type < 256)
return KADM5_BAD_TL_TYPE;
}
}
/*
* Check to see if the principal exists
*/
ret = kdb_get_entry(handle, entry->principal, &kdb, &adb);
switch(ret) {
case KADM5_UNK_PRINC:
break;
case 0:
kdb_free_entry(handle, kdb, &adb);
return KADM5_DUP;
default:
return ret;
}
kdb = calloc(1, sizeof(*kdb));
if (kdb == NULL)
return ENOMEM;
memset(&adb, 0, sizeof(osa_princ_ent_rec));
/*
* If a policy was specified, load it.
* If we can not find the one specified return an error
*/
if ((mask & KADM5_POLICY)) {
ret = get_policy(handle, entry->policy, &polent, &have_polent);
if (ret)
goto cleanup;
}
if (password) {
ret = passwd_check(handle, password, have_polent ? &polent : NULL,
entry->principal);
if (ret)
goto cleanup;
}
/*
* Start populating the various DB fields, using the
* "defaults" for fields that were not specified by the
* mask.
*/
if ((ret = krb5_timeofday(handle->context, &now)))
goto cleanup;
kdb->magic = KRB5_KDB_MAGIC_NUMBER;
kdb->len = KRB5_KDB_V1_BASE_LENGTH; /* gag me with a chainsaw */
if ((mask & KADM5_ATTRIBUTES))
kdb->attributes = entry->attributes;
else
kdb->attributes = handle->params.flags;
if ((mask & KADM5_MAX_LIFE))
kdb->max_life = entry->max_life;
else
kdb->max_life = handle->params.max_life;
if (mask & KADM5_MAX_RLIFE)
kdb->max_renewable_life = entry->max_renewable_life;
else
kdb->max_renewable_life = handle->params.max_rlife;
if ((mask & KADM5_PRINC_EXPIRE_TIME))
kdb->expiration = entry->princ_expire_time;
else
kdb->expiration = handle->params.expiration;
kdb->pw_expiration = 0;
if (have_polent) {
if(polent.pw_max_life)
kdb->pw_expiration = now + polent.pw_max_life;
else
kdb->pw_expiration = 0;
}
if ((mask & KADM5_PW_EXPIRATION))
kdb->pw_expiration = entry->pw_expiration;
kdb->last_success = 0;
kdb->last_failed = 0;
kdb->fail_auth_count = 0;
/* this is kind of gross, but in order to free the tl data, I need
to free the entire kdb entry, and that will try to free the
principal. */
ret = krb5_copy_principal(handle->context, entry->principal, &kdb->princ);
if (ret)
goto cleanup;
if ((ret = krb5_dbe_update_last_pwd_change(handle->context, kdb, now)))
goto cleanup;
if (mask & KADM5_TL_DATA) {
/* splice entry->tl_data onto the front of kdb->tl_data */
for (tl_data_tail = entry->tl_data; tl_data_tail;
tl_data_tail = tl_data_tail->tl_data_next)
{
ret = krb5_dbe_update_tl_data(handle->context, kdb, tl_data_tail);
if( ret )
goto cleanup;
}
}
/*
* We need to have setup the TL data, so we have strings, so we can
* check enctype policy, which is why we check/initialize ks_tuple
* this late.
*/
ret = apply_keysalt_policy(handle, entry->policy, n_ks_tuple, ks_tuple,
&new_n_ks_tuple, &new_ks_tuple);
if (ret)
goto cleanup;
/* initialize the keys */
ret = kdb_get_active_mkey(handle, &act_kvno, &act_mkey);
if (ret)
goto cleanup;
if (mask & KADM5_KEY_DATA) {
/* The client requested no keys for this principal. */
assert(entry->n_key_data == 0);
} else if (password) {
ret = krb5_dbe_cpw(handle->context, act_mkey, new_ks_tuple,
new_n_ks_tuple, password,
(mask & KADM5_KVNO)?entry->kvno:1,
FALSE, kdb);
} else {
/* Null password means create with random key (new in 1.8). */
ret = krb5_dbe_crk(handle->context, &master_keyblock,
new_ks_tuple, new_n_ks_tuple, FALSE, kdb);
}
if (ret)
goto cleanup;
/* Record the master key VNO used to encrypt this entry's keys */
ret = krb5_dbe_update_mkvno(handle->context, kdb, act_kvno);
if (ret)
goto cleanup;
ret = k5_kadm5_hook_create(handle->context, handle->hook_handles,
KADM5_HOOK_STAGE_PRECOMMIT, entry, mask,
new_n_ks_tuple, new_ks_tuple, password);
if (ret)
goto cleanup;
/* populate the admin-server-specific fields. In the OV server,
this used to be in a separate database. Since there's already
marshalling code for the admin fields, to keep things simple,
I'm going to keep it, and make all the admin stuff occupy a
single tl_data record, */
adb.admin_history_kvno = INITIAL_HIST_KVNO;
if (mask & KADM5_POLICY) {
adb.aux_attributes = KADM5_POLICY;
/* this does *not* need to be strdup'ed, because adb is xdr */
/* encoded in osa_adb_create_princ, and not ever freed */
adb.policy = entry->policy;
}
/* In all cases key and the principal data is set, let the database provider know */
kdb->mask = mask | KADM5_KEY_DATA | KADM5_PRINCIPAL ;
/* store the new db entry */
ret = kdb_put_entry(handle, kdb, &adb);
(void) k5_kadm5_hook_create(handle->context, handle->hook_handles,
KADM5_HOOK_STAGE_POSTCOMMIT, entry, mask,
new_n_ks_tuple, new_ks_tuple, password);
cleanup:
free(new_ks_tuple);
krb5_db_free_principal(handle->context, kdb);
if (have_polent)
(void) kadm5_free_policy_ent(handle->lhandle, &polent);
return ret;
}
kadm5_ret_t
kadm5_delete_principal(void *server_handle, krb5_principal principal)
{
unsigned int ret;
krb5_db_entry *kdb;
osa_princ_ent_rec adb;
kadm5_server_handle_t handle = server_handle;
CHECK_HANDLE(server_handle);
krb5_clear_error_message(handle->context);
if (principal == NULL)
return EINVAL;
if ((ret = kdb_get_entry(handle, principal, &kdb, &adb)))
return(ret);
ret = k5_kadm5_hook_remove(handle->context, handle->hook_handles,
KADM5_HOOK_STAGE_PRECOMMIT, principal);
if (ret) {
kdb_free_entry(handle, kdb, &adb);
return ret;
}
ret = kdb_delete_entry(handle, principal);
kdb_free_entry(handle, kdb, &adb);
if (ret == 0)
(void) k5_kadm5_hook_remove(handle->context,
handle->hook_handles,
KADM5_HOOK_STAGE_POSTCOMMIT, principal);
return ret;
}
kadm5_ret_t
kadm5_modify_principal(void *server_handle,
kadm5_principal_ent_t entry, long mask)
{
int ret, ret2, i;
kadm5_policy_ent_rec pol;
krb5_boolean have_pol = FALSE;
krb5_db_entry *kdb;
krb5_tl_data *tl_data_orig;
osa_princ_ent_rec adb;
kadm5_server_handle_t handle = server_handle;
CHECK_HANDLE(server_handle);
krb5_clear_error_message(handle->context);
if(entry == NULL)
return EINVAL;
if((mask & KADM5_PRINCIPAL) || (mask & KADM5_LAST_PWD_CHANGE) ||
(mask & KADM5_MOD_TIME) || (mask & KADM5_MOD_NAME) ||
(mask & KADM5_MKVNO) || (mask & KADM5_AUX_ATTRIBUTES) ||
(mask & KADM5_KEY_DATA) || (mask & KADM5_LAST_SUCCESS) ||
(mask & KADM5_LAST_FAILED))
return KADM5_BAD_MASK;
if((mask & ~ALL_PRINC_MASK))
return KADM5_BAD_MASK;
if((mask & KADM5_POLICY) && entry->policy == NULL)
return KADM5_BAD_MASK;
if((mask & KADM5_POLICY) && (mask & KADM5_POLICY_CLR))
return KADM5_BAD_MASK;
if (mask & KADM5_TL_DATA) {
tl_data_orig = entry->tl_data;
while (tl_data_orig) {
if (tl_data_orig->tl_data_type < 256)
return KADM5_BAD_TL_TYPE;
tl_data_orig = tl_data_orig->tl_data_next;
}
}
ret = kdb_get_entry(handle, entry->principal, &kdb, &adb);
if (ret)
return(ret);
/*
* This is pretty much the same as create ...
*/
if ((mask & KADM5_POLICY)) {
ret = get_policy(handle, entry->policy, &pol, &have_pol);
if (ret)
goto done;
/* set us up to use the new policy */
adb.aux_attributes |= KADM5_POLICY;
if (adb.policy)
free(adb.policy);
adb.policy = strdup(entry->policy);
}
if (have_pol) {
/* set pw_max_life based on new policy */
if (pol.pw_max_life) {
ret = krb5_dbe_lookup_last_pwd_change(handle->context, kdb,
&(kdb->pw_expiration));
if (ret)
goto done;
kdb->pw_expiration += pol.pw_max_life;
} else {
kdb->pw_expiration = 0;
}
}
if ((mask & KADM5_POLICY_CLR) && (adb.aux_attributes & KADM5_POLICY)) {
free(adb.policy);
adb.policy = NULL;
adb.aux_attributes &= ~KADM5_POLICY;
kdb->pw_expiration = 0;
}
if ((mask & KADM5_ATTRIBUTES))
kdb->attributes = entry->attributes;
if ((mask & KADM5_MAX_LIFE))
kdb->max_life = entry->max_life;
if ((mask & KADM5_PRINC_EXPIRE_TIME))
kdb->expiration = entry->princ_expire_time;
if (mask & KADM5_PW_EXPIRATION)
kdb->pw_expiration = entry->pw_expiration;
if (mask & KADM5_MAX_RLIFE)
kdb->max_renewable_life = entry->max_renewable_life;
if((mask & KADM5_KVNO)) {
for (i = 0; i < kdb->n_key_data; i++)
kdb->key_data[i].key_data_kvno = entry->kvno;
}
if (mask & KADM5_TL_DATA) {
krb5_tl_data *tl;
/* may have to change the version number of the API. Updates the list with the given tl_data rather than over-writting */
for (tl = entry->tl_data; tl;
tl = tl->tl_data_next)
{
ret = krb5_dbe_update_tl_data(handle->context, kdb, tl);
if( ret )
{
goto done;
}
}
}
/*
* Setting entry->fail_auth_count to 0 can be used to manually unlock
* an account. It is not possible to set fail_auth_count to any other
* value using kadmin.
*/
if (mask & KADM5_FAIL_AUTH_COUNT) {
if (entry->fail_auth_count != 0) {
ret = KADM5_BAD_SERVER_PARAMS;
goto done;
}
kdb->fail_auth_count = 0;
}
/* let the mask propagate to the database provider */
kdb->mask = mask;
ret = k5_kadm5_hook_modify(handle->context, handle->hook_handles,
KADM5_HOOK_STAGE_PRECOMMIT, entry, mask);
if (ret)
goto done;
ret = kdb_put_entry(handle, kdb, &adb);
if (ret) goto done;
(void) k5_kadm5_hook_modify(handle->context, handle->hook_handles,
KADM5_HOOK_STAGE_POSTCOMMIT, entry, mask);
ret = KADM5_OK;
done:
if (have_pol) {
ret2 = kadm5_free_policy_ent(handle->lhandle, &pol);
ret = ret ? ret : ret2;
}
kdb_free_entry(handle, kdb, &adb);
return ret;
}
kadm5_ret_t
kadm5_rename_principal(void *server_handle,
krb5_principal source, krb5_principal target)
{
krb5_db_entry *kdb;
osa_princ_ent_rec adb;
krb5_error_code ret;
kadm5_server_handle_t handle = server_handle;
CHECK_HANDLE(server_handle);
krb5_clear_error_message(handle->context);
if (source == NULL || target == NULL)
return EINVAL;
if ((ret = kdb_get_entry(handle, target, &kdb, &adb)) == 0) {
kdb_free_entry(handle, kdb, &adb);
return(KADM5_DUP);
}
ret = k5_kadm5_hook_rename(handle->context, handle->hook_handles,
KADM5_HOOK_STAGE_PRECOMMIT, source, target);
if (ret)
return ret;
ret = krb5_db_rename_principal(handle->context, source, target);
if (ret)
return ret;
/* Update the principal mod data. */
ret = kdb_get_entry(handle, target, &kdb, &adb);
if (ret)
return ret;
kdb->mask = 0;
ret = kdb_put_entry(handle, kdb, &adb);
kdb_free_entry(handle, kdb, &adb);
if (ret)
return ret;
(void) k5_kadm5_hook_rename(handle->context, handle->hook_handles,
KADM5_HOOK_STAGE_POSTCOMMIT, source, target);
return 0;
}
kadm5_ret_t
kadm5_get_principal(void *server_handle, krb5_principal principal,
kadm5_principal_ent_t entry,
long in_mask)
{
krb5_db_entry *kdb;
osa_princ_ent_rec adb;
krb5_error_code ret = 0;
long mask;
int i;
kadm5_server_handle_t handle = server_handle;
CHECK_HANDLE(server_handle);
krb5_clear_error_message(handle->context);
/*
* In version 1, all the defined fields are always returned.
* entry is a pointer to a kadm5_principal_ent_t_v1 that should be
* filled with allocated memory.
*/
mask = in_mask;
memset(entry, 0, sizeof(*entry));
if (principal == NULL)
return EINVAL;
if ((ret = kdb_get_entry(handle, principal, &kdb, &adb)))
return ret;
if ((mask & KADM5_POLICY) &&
adb.policy && (adb.aux_attributes & KADM5_POLICY)) {
if ((entry->policy = strdup(adb.policy)) == NULL) {
ret = ENOMEM;
goto done;
}
}
if (mask & KADM5_AUX_ATTRIBUTES)
entry->aux_attributes = adb.aux_attributes;
if ((mask & KADM5_PRINCIPAL) &&
(ret = krb5_copy_principal(handle->context, kdb->princ,
&entry->principal))) {
goto done;
}
if (mask & KADM5_PRINC_EXPIRE_TIME)
entry->princ_expire_time = kdb->expiration;
if ((mask & KADM5_LAST_PWD_CHANGE) &&
(ret = krb5_dbe_lookup_last_pwd_change(handle->context, kdb,
&(entry->last_pwd_change)))) {
goto done;
}
if (mask & KADM5_PW_EXPIRATION)
entry->pw_expiration = kdb->pw_expiration;
if (mask & KADM5_MAX_LIFE)
entry->max_life = kdb->max_life;
/* this is a little non-sensical because the function returns two */
/* values that must be checked separately against the mask */
if ((mask & KADM5_MOD_NAME) || (mask & KADM5_MOD_TIME)) {
ret = krb5_dbe_lookup_mod_princ_data(handle->context, kdb,
&(entry->mod_date),
&(entry->mod_name));
if (ret) {
goto done;
}
if (! (mask & KADM5_MOD_TIME))
entry->mod_date = 0;
if (! (mask & KADM5_MOD_NAME)) {
krb5_free_principal(handle->context, entry->mod_name);
entry->mod_name = NULL;
}
}
if (mask & KADM5_ATTRIBUTES)
entry->attributes = kdb->attributes;
if (mask & KADM5_KVNO)
for (entry->kvno = 0, i=0; i<kdb->n_key_data; i++)
if ((krb5_kvno) kdb->key_data[i].key_data_kvno > entry->kvno)
entry->kvno = kdb->key_data[i].key_data_kvno;
if (mask & KADM5_MKVNO) {
ret = krb5_dbe_get_mkvno(handle->context, kdb, &entry->mkvno);
if (ret)
goto done;
}
if (mask & KADM5_MAX_RLIFE)
entry->max_renewable_life = kdb->max_renewable_life;
if (mask & KADM5_LAST_SUCCESS)
entry->last_success = kdb->last_success;
if (mask & KADM5_LAST_FAILED)
entry->last_failed = kdb->last_failed;
if (mask & KADM5_FAIL_AUTH_COUNT)
entry->fail_auth_count = kdb->fail_auth_count;
if (mask & KADM5_TL_DATA) {
krb5_tl_data *tl, *tl2;
entry->tl_data = NULL;
tl = kdb->tl_data;
while (tl) {
if (tl->tl_data_type > 255) {
if ((tl2 = dup_tl_data(tl)) == NULL) {
ret = ENOMEM;
goto done;
}
tl2->tl_data_next = entry->tl_data;
entry->tl_data = tl2;
entry->n_tl_data++;
}
tl = tl->tl_data_next;
}
}
if (mask & KADM5_KEY_DATA) {
entry->n_key_data = kdb->n_key_data;
if(entry->n_key_data) {
entry->key_data = k5calloc(entry->n_key_data,
sizeof(krb5_key_data), &ret);
if (entry->key_data == NULL)
goto done;
} else
entry->key_data = NULL;
for (i = 0; i < entry->n_key_data; i++)
ret = krb5_copy_key_data_contents(handle->context,
&kdb->key_data[i],
&entry->key_data[i]);
if (ret)
goto done;
}
ret = KADM5_OK;
done:
if (ret && entry->principal) {
krb5_free_principal(handle->context, entry->principal);
entry->principal = NULL;
}
kdb_free_entry(handle, kdb, &adb);
return ret;
}
/*
* Function: check_pw_reuse
*
* Purpose: Check if a key appears in a list of keys, in order to
* enforce password history.
*
* Arguments:
*
* context (r) the krb5 context
* hist_keyblock (r) the key that hist_key_data is
* encrypted in
* n_new_key_data (r) length of new_key_data
* new_key_data (r) keys to check against
* pw_hist_data, encrypted in hist_keyblock
* n_pw_hist_data (r) length of pw_hist_data
* pw_hist_data (r) passwords to check new_key_data against
*
* Effects:
* For each new_key in new_key_data:
* decrypt new_key with the master_keyblock
* for each password in pw_hist_data:
* for each hist_key in password:
* decrypt hist_key with hist_keyblock
* compare the new_key and hist_key
*
* Returns krb5 errors, KADM5_PASS_RESUSE if a key in
* new_key_data is the same as a key in pw_hist_data, or 0.
*/
static kadm5_ret_t
check_pw_reuse(krb5_context context,
krb5_keyblock *hist_keyblocks,
int n_new_key_data, krb5_key_data *new_key_data,
unsigned int n_pw_hist_data, osa_pw_hist_ent *pw_hist_data)
{
unsigned int x, y, z;
krb5_keyblock newkey, histkey, *kb;
krb5_key_data *key_data;
krb5_error_code ret;
assert (n_new_key_data >= 0);
for (x = 0; x < (unsigned) n_new_key_data; x++) {
/* Check only entries with the most recent kvno. */
if (new_key_data[x].key_data_kvno != new_key_data[0].key_data_kvno)
break;
ret = krb5_dbe_decrypt_key_data(context, NULL, &(new_key_data[x]),
&newkey, NULL);
if (ret)
return(ret);
for (y = 0; y < n_pw_hist_data; y++) {
for (z = 0; z < (unsigned int) pw_hist_data[y].n_key_data; z++) {
for (kb = hist_keyblocks; kb->enctype != 0; kb++) {
key_data = &pw_hist_data[y].key_data[z];
ret = krb5_dbe_decrypt_key_data(context, kb, key_data,
&histkey, NULL);
if (ret)
continue;
if (newkey.length == histkey.length &&
newkey.enctype == histkey.enctype &&
memcmp(newkey.contents, histkey.contents,
histkey.length) == 0) {
krb5_free_keyblock_contents(context, &histkey);
krb5_free_keyblock_contents(context, &newkey);
return KADM5_PASS_REUSE;
}
krb5_free_keyblock_contents(context, &histkey);
}
}
}
krb5_free_keyblock_contents(context, &newkey);
}
return(0);
}
static void
free_history_entry(krb5_context context, osa_pw_hist_ent *hist)
{
int i;
for (i = 0; i < hist->n_key_data; i++)
krb5_free_key_data_contents(context, &hist->key_data[i]);
free(hist->key_data);
}
/*
* Function: create_history_entry
*
* Purpose: Creates a password history entry from an array of
* key_data.
*
* Arguments:
*
* context (r) krb5_context to use
* mkey (r) master keyblock to decrypt key data with
* hist_key (r) history keyblock to encrypt key data with
* n_key_data (r) number of elements in key_data
* key_data (r) keys to add to the history entry
* hist_out (w) history entry to fill in
*
* Effects:
*
* hist->key_data is allocated to store n_key_data key_datas. Each
* element of key_data is decrypted with master_keyblock, re-encrypted
* in hist_key, and added to hist->key_data. hist->n_key_data is
* set to n_key_data.
*/
static
int create_history_entry(krb5_context context,
krb5_keyblock *hist_key, int n_key_data,
krb5_key_data *key_data, osa_pw_hist_ent *hist_out)
{
int i;
krb5_error_code ret = 0;
krb5_keyblock key;
krb5_keysalt salt;
krb5_ui_2 kvno;
osa_pw_hist_ent hist;
hist_out->key_data = NULL;
hist_out->n_key_data = 0;
if (n_key_data < 0)
return EINVAL;
memset(&key, 0, sizeof(key));
memset(&hist, 0, sizeof(hist));
if (n_key_data == 0)
goto cleanup;
hist.key_data = k5calloc(n_key_data, sizeof(krb5_key_data), &ret);
if (hist.key_data == NULL)
goto cleanup;
/* We only want to store the most recent kvno, and key_data should already
* be sorted in descending order by kvno. */
kvno = key_data[0].key_data_kvno;
for (i = 0; i < n_key_data; i++) {
if (key_data[i].key_data_kvno < kvno)
break;
ret = krb5_dbe_decrypt_key_data(context, NULL,
&key_data[i], &key,
&salt);
if (ret)
goto cleanup;
ret = krb5_dbe_encrypt_key_data(context, hist_key, &key, &salt,
key_data[i].key_data_kvno,
&hist.key_data[hist.n_key_data]);
if (ret)
goto cleanup;
hist.n_key_data++;
krb5_free_keyblock_contents(context, &key);
/* krb5_free_keysalt(context, &salt); */
}
*hist_out = hist;
hist.n_key_data = 0;
hist.key_data = NULL;
cleanup:
krb5_free_keyblock_contents(context, &key);
free_history_entry(context, &hist);
return ret;
}
/*
* Function: add_to_history
*
* Purpose: Adds a password to a principal's password history.
*
* Arguments:
*
* context (r) krb5_context to use
* hist_kvno (r) kvno of current history key
* adb (r/w) admin principal entry to add keys to
* pol (r) adb's policy
* pw (r) keys for the password to add to adb's key history
*
* Effects:
*
* add_to_history adds a single password to adb's password history.
* pw contains n_key_data keys in its key_data, in storage should be
* allocated but not freed by the caller (XXX blech!).
*
* This function maintains adb->old_keys as a circular queue. It
* starts empty, and grows each time this function is called until it
* is pol->pw_history_num items long. adb->old_key_len holds the
* number of allocated entries in the array, and must therefore be [0,
* pol->pw_history_num). adb->old_key_next is the index into the
* array where the next element should be written, and must be [0,
* adb->old_key_len).
*/
static kadm5_ret_t add_to_history(krb5_context context,
krb5_kvno hist_kvno,
osa_princ_ent_t adb,
kadm5_policy_ent_t pol,
osa_pw_hist_ent *pw)
{
osa_pw_hist_ent *histp;
uint32_t nhist;
unsigned int i, knext, nkeys;
nhist = pol->pw_history_num;
/* A history of 1 means just check the current password */
if (nhist <= 1)
return 0;
if (adb->admin_history_kvno != hist_kvno) {
/* The history key has changed since the last password change, so we
* have to reset the password history. */
free(adb->old_keys);
adb->old_keys = NULL;
adb->old_key_len = 0;
adb->old_key_next = 0;
adb->admin_history_kvno = hist_kvno;
}
nkeys = adb->old_key_len;
knext = adb->old_key_next;
/* resize the adb->old_keys array if necessary */
if (nkeys + 1 < nhist) {
if (adb->old_keys == NULL) {
adb->old_keys = (osa_pw_hist_ent *)
malloc((nkeys + 1) * sizeof (osa_pw_hist_ent));
} else {
adb->old_keys = (osa_pw_hist_ent *)
realloc(adb->old_keys,
(nkeys + 1) * sizeof (osa_pw_hist_ent));
}
if (adb->old_keys == NULL)
return(ENOMEM);
memset(&adb->old_keys[nkeys], 0, sizeof(osa_pw_hist_ent));
nkeys = ++adb->old_key_len;
/*
* To avoid losing old keys, shift forward each entry after
* knext.
*/
for (i = nkeys - 1; i > knext; i--) {
adb->old_keys[i] = adb->old_keys[i - 1];
}
memset(&adb->old_keys[knext], 0, sizeof(osa_pw_hist_ent));
} else if (nkeys + 1 > nhist) {
/*
* The policy must have changed! Shrink the array.
* Can't simply realloc() down, since it might be wrapped.
* To understand the arithmetic below, note that we are
* copying into new positions 0 .. N-1 from old positions
* old_key_next-N .. old_key_next-1, modulo old_key_len,
* where N = pw_history_num - 1 is the length of the
* shortened list. Matt Crawford, FNAL
*/
/*
* M = adb->old_key_len, N = pol->pw_history_num - 1
*
* tmp[0] .. tmp[N-1] = old[(knext-N)%M] .. old[(knext-1)%M]
*/
int j;
osa_pw_hist_t tmp;
tmp = (osa_pw_hist_ent *)
malloc((nhist - 1) * sizeof (osa_pw_hist_ent));
if (tmp == NULL)
return ENOMEM;
for (i = 0; i < nhist - 1; i++) {
/*
* Add nkeys once before taking remainder to avoid
* negative values.
*/
j = (i + nkeys + knext - (nhist - 1)) % nkeys;
tmp[i] = adb->old_keys[j];
}
/* Now free the ones we don't keep (the oldest ones) */
for (i = 0; i < nkeys - (nhist - 1); i++) {
j = (i + nkeys + knext) % nkeys;
histp = &adb->old_keys[j];
for (j = 0; j < histp->n_key_data; j++) {
krb5_free_key_data_contents(context, &histp->key_data[j]);
}
free(histp->key_data);
}
free(adb->old_keys);
adb->old_keys = tmp;
nkeys = adb->old_key_len = nhist - 1;
knext = adb->old_key_next = 0;
}
/*
* If nhist decreased since the last password change, and nkeys+1
* is less than the previous nhist, it is possible for knext to
* index into unallocated space. This condition would not be
* caught by the resizing code above.
*/
if (knext + 1 > nkeys)
knext = adb->old_key_next = 0;
/* free the old pw history entry if it contains data */
histp = &adb->old_keys[knext];
for (i = 0; i < (unsigned int) histp->n_key_data; i++)
krb5_free_key_data_contents(context, &histp->key_data[i]);
free(histp->key_data);
/* store the new entry */
adb->old_keys[knext] = *pw;
/* update the next pointer */
if (++adb->old_key_next == nhist - 1)
adb->old_key_next = 0;
return(0);
}
/* FIXME: don't use global variable for this */
krb5_boolean use_password_server = 0;
#ifdef USE_PASSWORD_SERVER
static krb5_boolean
kadm5_use_password_server (void)
{
return use_password_server;
}
#endif
void kadm5_set_use_password_server (void);
void
kadm5_set_use_password_server (void)
{
use_password_server = 1;
}
#ifdef USE_PASSWORD_SERVER
/*
* kadm5_launch_task () runs a program (task_path) to synchronize the
* Apple password server with the Kerberos database. Password server
* programs can receive arguments on the command line (task_argv)
* and a block of data via stdin (data_buffer).
*
* Because a failure to communicate with the tool results in the
* password server falling out of sync with the database,
* kadm5_launch_task() always fails if it can't talk to the tool.
*/
static kadm5_ret_t
kadm5_launch_task (krb5_context context,
const char *task_path, char * const task_argv[],
const char *buffer)
{
kadm5_ret_t ret;
int data_pipe[2];
ret = pipe (data_pipe);
if (ret)
ret = errno;
if (!ret) {
pid_t pid = fork ();
if (pid == -1) {
ret = errno;
close (data_pipe[0]);
close (data_pipe[1]);
} else if (pid == 0) {
/* The child: */
if (dup2 (data_pipe[0], STDIN_FILENO) == -1)
_exit (1);
close (data_pipe[0]);
close (data_pipe[1]);
execv (task_path, task_argv);
_exit (1); /* Fail if execv fails */
} else {
/* The parent: */
int status;
ret = 0;
close (data_pipe[0]);
/* Write out the buffer to the child, add \n */
if (buffer) {
if (krb5_net_write (context, data_pipe[1], buffer, strlen (buffer)) < 0
|| krb5_net_write (context, data_pipe[1], "\n", 1) < 0)
{
/* kill the child to make sure waitpid() won't hang later */
ret = errno;
kill (pid, SIGKILL);
}
}
close (data_pipe[1]);
waitpid (pid, &status, 0);
if (!ret) {
if (WIFEXITED (status)) {
/* child read password and exited. Check the return value. */
if ((WEXITSTATUS (status) != 0) && (WEXITSTATUS (status) != 252)) {
ret = KRB5KDC_ERR_POLICY; /* password change rejected */
}
} else {
/* child read password but crashed or was killed */
ret = KRB5KRB_ERR_GENERIC; /* FIXME: better error */
}
}
}
}
return ret;
}
#endif
kadm5_ret_t
kadm5_chpass_principal(void *server_handle,
krb5_principal principal, char *password)
{
return
kadm5_chpass_principal_3(server_handle, principal, FALSE,
0, NULL, password);
}
kadm5_ret_t
kadm5_chpass_principal_3(void *server_handle,
krb5_principal principal, krb5_boolean keepold,
int n_ks_tuple, krb5_key_salt_tuple *ks_tuple,
char *password)
{
krb5_int32 now;
kadm5_policy_ent_rec pol;
osa_princ_ent_rec adb;
krb5_db_entry *kdb;
int ret, ret2, last_pwd, hist_added;
krb5_boolean have_pol = FALSE;
kadm5_server_handle_t handle = server_handle;
osa_pw_hist_ent hist;
krb5_keyblock *act_mkey, *hist_keyblocks = NULL;
krb5_kvno act_kvno, hist_kvno;
int new_n_ks_tuple = 0;
krb5_key_salt_tuple *new_ks_tuple = NULL;
CHECK_HANDLE(server_handle);
krb5_clear_error_message(handle->context);
hist_added = 0;
memset(&hist, 0, sizeof(hist));
if (principal == NULL || password == NULL)
return EINVAL;
if ((krb5_principal_compare(handle->context,
principal, hist_princ)) == TRUE)
return KADM5_PROTECT_PRINCIPAL;
if ((ret = kdb_get_entry(handle, principal, &kdb, &adb)))
return(ret);
ret = apply_keysalt_policy(handle, adb.policy, n_ks_tuple, ks_tuple,
&new_n_ks_tuple, &new_ks_tuple);
if (ret)
goto done;
if ((adb.aux_attributes & KADM5_POLICY)) {
ret = get_policy(handle, adb.policy, &pol, &have_pol);
if (ret)
goto done;
}
if (have_pol) {
/* Create a password history entry before we change kdb's key_data. */
ret = kdb_get_hist_key(handle, &hist_keyblocks, &hist_kvno);
if (ret)
goto done;
ret = create_history_entry(handle->context, &hist_keyblocks[0],
kdb->n_key_data, kdb->key_data, &hist);
if (ret)
goto done;
}
if ((ret = passwd_check(handle, password, have_pol ? &pol : NULL,
principal)))
goto done;
ret = kdb_get_active_mkey(handle, &act_kvno, &act_mkey);
if (ret)
goto done;
ret = krb5_dbe_cpw(handle->context, act_mkey, new_ks_tuple, new_n_ks_tuple,
password, 0 /* increment kvno */,
keepold, kdb);
if (ret)
goto done;
ret = krb5_dbe_update_mkvno(handle->context, kdb, act_kvno);
if (ret)
goto done;
kdb->attributes &= ~KRB5_KDB_REQUIRES_PWCHANGE;
ret = krb5_timeofday(handle->context, &now);
if (ret)
goto done;
if ((adb.aux_attributes & KADM5_POLICY)) {
/* the policy was loaded before */
ret = krb5_dbe_lookup_last_pwd_change(handle->context, kdb, &last_pwd);
if (ret)
goto done;
#if 0
/*
* The spec says this check is overridden if the caller has
* modify privilege. The admin server therefore makes this
* check itself (in chpass_principal_wrapper, misc.c). A
* local caller implicitly has all authorization bits.
*/
if ((now - last_pwd) < pol.pw_min_life &&
!(kdb->attributes & KRB5_KDB_REQUIRES_PWCHANGE)) {
ret = KADM5_PASS_TOOSOON;
goto done;
}
#endif
ret = check_pw_reuse(handle->context, hist_keyblocks,
kdb->n_key_data, kdb->key_data,
1, &hist);
if (ret)
goto done;
if (pol.pw_history_num > 1) {
/* If hist_kvno has changed since the last password change, we
* can't check the history. */
if (adb.admin_history_kvno == hist_kvno) {
ret = check_pw_reuse(handle->context, hist_keyblocks,
kdb->n_key_data, kdb->key_data,
adb.old_key_len, adb.old_keys);
if (ret)
goto done;
}
/* Don't save empty history. */
if (hist.n_key_data > 0) {
ret = add_to_history(handle->context, hist_kvno, &adb, &pol,
&hist);
if (ret)
goto done;
hist_added = 1;
}
}
if (pol.pw_max_life)
kdb->pw_expiration = now + pol.pw_max_life;
else
kdb->pw_expiration = 0;
} else {
kdb->pw_expiration = 0;
}
#ifdef USE_PASSWORD_SERVER
if (kadm5_use_password_server () &&
(krb5_princ_size (handle->context, principal) == 1)) {
krb5_data *princ = krb5_princ_component (handle->context, principal, 0);
const char *path = "/usr/sbin/mkpassdb";
char *argv[] = { "mkpassdb", "-setpassword", NULL, NULL };
char *pstring = NULL;
if (!ret) {
pstring = malloc ((princ->length + 1) * sizeof (char));
if (pstring == NULL) { ret = ENOMEM; }
}
if (!ret) {
memcpy (pstring, princ->data, princ->length);
pstring [princ->length] = '\0';
argv[2] = pstring;
ret = kadm5_launch_task (handle->context, path, argv, password);
}
if (pstring != NULL)
free (pstring);
if (ret)
goto done;
}
#endif
ret = krb5_dbe_update_last_pwd_change(handle->context, kdb, now);
if (ret)
goto done;
/* unlock principal on this KDC */
kdb->fail_auth_count = 0;
/* key data and attributes changed, let the database provider know */
kdb->mask = KADM5_KEY_DATA | KADM5_ATTRIBUTES |
KADM5_FAIL_AUTH_COUNT;
/* | KADM5_CPW_FUNCTION */
if (hist_added)
kdb->mask |= KADM5_KEY_HIST;
ret = k5_kadm5_hook_chpass(handle->context, handle->hook_handles,
KADM5_HOOK_STAGE_PRECOMMIT, principal, keepold,
new_n_ks_tuple, new_ks_tuple, password);
if (ret)
goto done;
if ((ret = kdb_put_entry(handle, kdb, &adb)))
goto done;
(void) k5_kadm5_hook_chpass(handle->context, handle->hook_handles,
KADM5_HOOK_STAGE_POSTCOMMIT, principal,
keepold, new_n_ks_tuple, new_ks_tuple, password);
ret = KADM5_OK;
done:
free(new_ks_tuple);
if (!hist_added && hist.key_data)
free_history_entry(handle->context, &hist);
kdb_free_entry(handle, kdb, &adb);
kdb_free_keyblocks(handle, hist_keyblocks);
if (have_pol && (ret2 = kadm5_free_policy_ent(handle->lhandle, &pol))
&& !ret)
ret = ret2;
return ret;
}
kadm5_ret_t
kadm5_randkey_principal(void *server_handle,
krb5_principal principal,
krb5_keyblock **keyblocks,
int *n_keys)
{
return
kadm5_randkey_principal_3(server_handle, principal,
FALSE, 0, NULL,
keyblocks, n_keys);
}
kadm5_ret_t
kadm5_randkey_principal_3(void *server_handle,
krb5_principal principal,
krb5_boolean keepold,
int n_ks_tuple, krb5_key_salt_tuple *ks_tuple,
krb5_keyblock **keyblocks,
int *n_keys)
{
krb5_db_entry *kdb;
osa_princ_ent_rec adb;
krb5_int32 now;
kadm5_policy_ent_rec pol;
int ret, last_pwd, n_new_keys;
krb5_boolean have_pol = FALSE;
kadm5_server_handle_t handle = server_handle;
krb5_keyblock *act_mkey;
krb5_kvno act_kvno;
int new_n_ks_tuple = 0;
krb5_key_salt_tuple *new_ks_tuple = NULL;
if (keyblocks)
*keyblocks = NULL;
CHECK_HANDLE(server_handle);
krb5_clear_error_message(handle->context);
if (principal == NULL)
return EINVAL;
if ((ret = kdb_get_entry(handle, principal, &kdb, &adb)))
return(ret);
ret = apply_keysalt_policy(handle, adb.policy, n_ks_tuple, ks_tuple,
&new_n_ks_tuple, &new_ks_tuple);
if (ret)
goto done;
if (krb5_principal_compare(handle->context, principal, hist_princ)) {
/* If changing the history entry, the new entry must have exactly one
* key. */
if (keepold)
return KADM5_PROTECT_PRINCIPAL;
new_n_ks_tuple = 1;
}
ret = kdb_get_active_mkey(handle, &act_kvno, &act_mkey);
if (ret)
goto done;
ret = krb5_dbe_crk(handle->context, act_mkey, new_ks_tuple, new_n_ks_tuple,
keepold, kdb);
if (ret)
goto done;
ret = krb5_dbe_update_mkvno(handle->context, kdb, act_kvno);
if (ret)
goto done;
kdb->attributes &= ~KRB5_KDB_REQUIRES_PWCHANGE;
ret = krb5_timeofday(handle->context, &now);
if (ret)
goto done;
if ((adb.aux_attributes & KADM5_POLICY)) {
ret = get_policy(handle, adb.policy, &pol, &have_pol);
if (ret)
goto done;
}
if (have_pol) {
ret = krb5_dbe_lookup_last_pwd_change(handle->context, kdb, &last_pwd);
if (ret)
goto done;
#if 0
/*
* The spec says this check is overridden if the caller has
* modify privilege. The admin server therefore makes this
* check itself (in chpass_principal_wrapper, misc.c). A
* local caller implicitly has all authorization bits.
*/
if((now - last_pwd) < pol.pw_min_life &&
!(kdb->attributes & KRB5_KDB_REQUIRES_PWCHANGE)) {
ret = KADM5_PASS_TOOSOON;
goto done;
}
#endif
if (pol.pw_max_life)
kdb->pw_expiration = now + pol.pw_max_life;
else
kdb->pw_expiration = 0;
} else {
kdb->pw_expiration = 0;
}
ret = krb5_dbe_update_last_pwd_change(handle->context, kdb, now);
if (ret)
goto done;
/* unlock principal on this KDC */
kdb->fail_auth_count = 0;
if (keyblocks) {
/* Return only the new keys added by krb5_dbe_crk. */
n_new_keys = count_new_keys(kdb->n_key_data, kdb->key_data);
ret = decrypt_key_data(handle->context, n_new_keys, kdb->key_data,
keyblocks, n_keys);
if (ret)
goto done;
}
/* key data changed, let the database provider know */
kdb->mask = KADM5_KEY_DATA | KADM5_FAIL_AUTH_COUNT;
/* | KADM5_RANDKEY_USED */;
ret = k5_kadm5_hook_chpass(handle->context, handle->hook_handles,
KADM5_HOOK_STAGE_PRECOMMIT, principal, keepold,
new_n_ks_tuple, new_ks_tuple, NULL);
if (ret)
goto done;
if ((ret = kdb_put_entry(handle, kdb, &adb)))
goto done;
(void) k5_kadm5_hook_chpass(handle->context, handle->hook_handles,
KADM5_HOOK_STAGE_POSTCOMMIT, principal,
keepold, new_n_ks_tuple, new_ks_tuple, NULL);
ret = KADM5_OK;
done:
free(new_ks_tuple);
kdb_free_entry(handle, kdb, &adb);
if (have_pol)
kadm5_free_policy_ent(handle->lhandle, &pol);
return ret;
}
/*
* kadm5_setv4key_principal:
*
* Set only ONE key of the principal, removing all others. This key
* must have the DES_CBC_CRC enctype and is entered as having the
* krb4 salttype. This is to enable things like kadmind4 to work.
*/
kadm5_ret_t
kadm5_setv4key_principal(void *server_handle,
krb5_principal principal,
krb5_keyblock *keyblock)
{
krb5_db_entry *kdb;
osa_princ_ent_rec adb;
krb5_int32 now;
kadm5_policy_ent_rec pol;
krb5_keysalt keysalt;
int i, kvno, ret;
krb5_boolean have_pol = FALSE;
#if 0
int last_pwd;
#endif
kadm5_server_handle_t handle = server_handle;
krb5_key_data tmp_key_data;
krb5_keyblock *act_mkey;
memset( &tmp_key_data, 0, sizeof(tmp_key_data));
CHECK_HANDLE(server_handle);
krb5_clear_error_message(handle->context);
if (principal == NULL || keyblock == NULL)
return EINVAL;
if (hist_princ && /* this will be NULL when initializing the databse */
((krb5_principal_compare(handle->context,
principal, hist_princ)) == TRUE))
return KADM5_PROTECT_PRINCIPAL;
if (keyblock->enctype != ENCTYPE_DES_CBC_CRC)
return KADM5_SETV4KEY_INVAL_ENCTYPE;
if ((ret = kdb_get_entry(handle, principal, &kdb, &adb)))
return(ret);
for (kvno = 0, i=0; i<kdb->n_key_data; i++)
if (kdb->key_data[i].key_data_kvno > kvno)
kvno = kdb->key_data[i].key_data_kvno;
if (kdb->key_data != NULL)
cleanup_key_data(handle->context, kdb->n_key_data, kdb->key_data);
kdb->key_data = calloc(1, sizeof(krb5_key_data));
if (kdb->key_data == NULL)
return ENOMEM;
kdb->n_key_data = 1;
keysalt.type = KRB5_KDB_SALTTYPE_V4;
/* XXX data.magic? */
keysalt.data.length = 0;
keysalt.data.data = NULL;
ret = kdb_get_active_mkey(handle, NULL, &act_mkey);
if (ret)
goto done;
/* use tmp_key_data as temporary location and reallocate later */
ret = krb5_dbe_encrypt_key_data(handle->context, act_mkey, keyblock,
&keysalt, kvno + 1, kdb->key_data);
if (ret) {
goto done;
}
kdb->attributes &= ~KRB5_KDB_REQUIRES_PWCHANGE;
ret = krb5_timeofday(handle->context, &now);
if (ret)
goto done;
if ((adb.aux_attributes & KADM5_POLICY)) {
ret = get_policy(handle, adb.policy, &pol, &have_pol);
if (ret)
goto done;
}
if (have_pol) {
#if 0
/*
* The spec says this check is overridden if the caller has
* modify privilege. The admin server therefore makes this
* check itself (in chpass_principal_wrapper, misc.c). A
* local caller implicitly has all authorization bits.
*/
if (ret = krb5_dbe_lookup_last_pwd_change(handle->context,
kdb, &last_pwd))
goto done;
if((now - last_pwd) < pol.pw_min_life &&
!(kdb->attributes & KRB5_KDB_REQUIRES_PWCHANGE)) {
ret = KADM5_PASS_TOOSOON;
goto done;
}
#endif
if (pol.pw_max_life)
kdb->pw_expiration = now + pol.pw_max_life;
else
kdb->pw_expiration = 0;
} else {
kdb->pw_expiration = 0;
}
ret = krb5_dbe_update_last_pwd_change(handle->context, kdb, now);
if (ret)
goto done;
/* unlock principal on this KDC */
kdb->fail_auth_count = 0;
/* key data changed, let the database provider know */
kdb->mask = KADM5_KEY_DATA | KADM5_FAIL_AUTH_COUNT;
if ((ret = kdb_put_entry(handle, kdb, &adb)))
goto done;
ret = KADM5_OK;
done:
for (i = 0; i < tmp_key_data.key_data_ver; i++) {
if (tmp_key_data.key_data_contents[i]) {
memset (tmp_key_data.key_data_contents[i], 0, tmp_key_data.key_data_length[i]);
free (tmp_key_data.key_data_contents[i]);
}
}
kdb_free_entry(handle, kdb, &adb);
if (have_pol)
kadm5_free_policy_ent(handle->lhandle, &pol);
return ret;
}
kadm5_ret_t
kadm5_setkey_principal(void *server_handle,
krb5_principal principal,
krb5_keyblock *keyblocks,
int n_keys)
{
return
kadm5_setkey_principal_3(server_handle, principal,
FALSE, 0, NULL,
keyblocks, n_keys);
}
kadm5_ret_t
kadm5_setkey_principal_3(void *server_handle,
krb5_principal principal,
krb5_boolean keepold,
int n_ks_tuple, krb5_key_salt_tuple *ks_tuple,
krb5_keyblock *keyblocks,
int n_keys)
{
kadm5_key_data *key_data;
kadm5_ret_t ret;
int i;
if (keyblocks == NULL)
return EINVAL;
if (n_ks_tuple) {
if (n_ks_tuple != n_keys)
return KADM5_SETKEY3_ETYPE_MISMATCH;
for (i = 0; i < n_ks_tuple; i++) {
if (ks_tuple[i].ks_enctype != keyblocks[i].enctype)
return KADM5_SETKEY3_ETYPE_MISMATCH;
}
}
key_data = calloc(n_keys, sizeof(kadm5_key_data));
if (key_data == NULL)
return ENOMEM;
for (i = 0; i < n_keys; i++) {
key_data[i].key = keyblocks[i];
key_data[i].salt.type =
n_ks_tuple ? ks_tuple[i].ks_salttype : KRB5_KDB_SALTTYPE_NORMAL;
}
ret = kadm5_setkey_principal_4(server_handle, principal, keepold,
key_data, n_keys);
free(key_data);
return ret;
}
/* Create a key/salt list from a key_data array. */
static kadm5_ret_t
make_ks_from_key_data(krb5_context context, kadm5_key_data *key_data,
int n_key_data, krb5_key_salt_tuple **out)
{
int i;
krb5_key_salt_tuple *ks;
*out = NULL;
ks = calloc(n_key_data, sizeof(*ks));
if (ks == NULL)
return ENOMEM;
for (i = 0; i < n_key_data; i++) {
ks[i].ks_enctype = key_data[i].key.enctype;
ks[i].ks_salttype = key_data[i].salt.type;
}
*out = ks;
return 0;
}
kadm5_ret_t
kadm5_setkey_principal_4(void *server_handle, krb5_principal principal,
krb5_boolean keepold, kadm5_key_data *key_data,
int n_key_data)
{
krb5_db_entry *kdb;
osa_princ_ent_rec adb;
krb5_int32 now;
kadm5_policy_ent_rec pol;
krb5_key_data *new_key_data = NULL;
int i, j, ret, n_new_key_data = 0;
krb5_kvno kvno;
krb5_boolean similar, have_pol = FALSE;
kadm5_server_handle_t handle = server_handle;
krb5_keyblock *act_mkey;
krb5_key_salt_tuple *ks_from_keys = NULL;
CHECK_HANDLE(server_handle);
krb5_clear_error_message(handle->context);
if (principal == NULL || key_data == NULL || n_key_data == 0)
return EINVAL;
/* hist_princ will be NULL when initializing the database. */
if (hist_princ != NULL &&
krb5_principal_compare(handle->context, principal, hist_princ))
return KADM5_PROTECT_PRINCIPAL;
/* For now, all keys must have the same kvno. */
kvno = key_data[0].kvno;
for (i = 1; i < n_key_data; i++) {
if (key_data[i].kvno != kvno)
return KADM5_SETKEY_BAD_KVNO;
}
ret = kdb_get_entry(handle, principal, &kdb, &adb);
if (ret)
return ret;
if (kvno == 0) {
/* Pick the next kvno. */
for (i = 0; i < kdb->n_key_data; i++) {
if (kdb->key_data[i].key_data_kvno > kvno)
kvno = kdb->key_data[i].key_data_kvno;
}
kvno++;
} else if (keepold) {
/* Check that the kvno does collide with existing keys. */
for (i = 0; i < kdb->n_key_data; i++) {
if (kdb->key_data[i].key_data_kvno == kvno) {
ret = KADM5_SETKEY_BAD_KVNO;
goto done;
}
}
}
ret = make_ks_from_key_data(handle->context, key_data, n_key_data,
&ks_from_keys);
if (ret)
goto done;
ret = apply_keysalt_policy(handle, adb.policy, n_key_data, ks_from_keys,
NULL, NULL);
free(ks_from_keys);
if (ret)
goto done;
for (i = 0; i < n_key_data; i++) {
for (j = i + 1; j < n_key_data; j++) {
ret = krb5_c_enctype_compare(handle->context,
key_data[i].key.enctype,
key_data[j].key.enctype,
&similar);
if (ret)
goto done;
if (similar) {
if (key_data[i].salt.type == key_data[j].salt.type) {
ret = KADM5_SETKEY_DUP_ENCTYPES;
goto done;
}
}
}
}
n_new_key_data = n_key_data + (keepold ? kdb->n_key_data : 0);
new_key_data = calloc(n_new_key_data, sizeof(krb5_key_data));
if (new_key_data == NULL) {
n_new_key_data = 0;
ret = ENOMEM;
goto done;
}
n_new_key_data = 0;
for (i = 0; i < n_key_data; i++) {
ret = kdb_get_active_mkey(handle, NULL, &act_mkey);
if (ret)
goto done;
ret = krb5_dbe_encrypt_key_data(handle->context, act_mkey,
&key_data[i].key, &key_data[i].salt,
kvno, &new_key_data[i]);
if (ret)
goto done;
n_new_key_data++;
}
/* Copy old key data if necessary. */
if (keepold) {
memcpy(new_key_data + n_new_key_data, kdb->key_data,
kdb->n_key_data * sizeof(krb5_key_data));
memset(kdb->key_data, 0, kdb->n_key_data * sizeof(krb5_key_data));
/*
* Sort the keys to maintain the defined kvno order. We only need to
* sort if we keep old keys, as otherwise we allow only a single kvno
* to be specified.
*/
krb5_dbe_sort_key_data(new_key_data, n_new_key_data);
}
/* Replace kdb->key_data with the new keys. */
cleanup_key_data(handle->context, kdb->n_key_data, kdb->key_data);
kdb->key_data = new_key_data;
kdb->n_key_data = n_new_key_data;
new_key_data = NULL;
n_new_key_data = 0;
kdb->attributes &= ~KRB5_KDB_REQUIRES_PWCHANGE;
ret = krb5_timeofday(handle->context, &now);
if (ret)
goto done;
if (adb.aux_attributes & KADM5_POLICY) {
ret = get_policy(handle, adb.policy, &pol, &have_pol);
if (ret)
goto done;
}
if (have_pol) {
if (pol.pw_max_life)
kdb->pw_expiration = now + pol.pw_max_life;
else
kdb->pw_expiration = 0;
} else {
kdb->pw_expiration = 0;
}
ret = krb5_dbe_update_last_pwd_change(handle->context, kdb, now);
if (ret)
goto done;
/* Unlock principal on this KDC. */
kdb->fail_auth_count = 0;
/* key data changed, let the database provider know */
kdb->mask = KADM5_KEY_DATA | KADM5_FAIL_AUTH_COUNT;
ret = kdb_put_entry(handle, kdb, &adb);
if (ret)
goto done;
ret = KADM5_OK;
done:
cleanup_key_data(handle->context, n_new_key_data, new_key_data);
kdb_free_entry(handle, kdb, &adb);
if (have_pol)
kadm5_free_policy_ent(handle->lhandle, &pol);
return ret;
}
/*
* Return the list of keys like kadm5_randkey_principal,
* but don't modify the principal.
*/
kadm5_ret_t
kadm5_get_principal_keys(void *server_handle /* IN */,
krb5_principal principal /* IN */,
krb5_kvno kvno /* IN */,
kadm5_key_data **key_data_out /* OUT */,
int *n_key_data_out /* OUT */)
{
krb5_db_entry *kdb;
osa_princ_ent_rec adb;
kadm5_ret_t ret;
kadm5_server_handle_t handle = server_handle;
kadm5_key_data *key_data = NULL;
int i, nkeys = 0;
if (principal == NULL || key_data_out == NULL || n_key_data_out == NULL)
return EINVAL;
CHECK_HANDLE(server_handle);
if ((ret = kdb_get_entry(handle, principal, &kdb, &adb)))
return(ret);
key_data = calloc(kdb->n_key_data, sizeof(kadm5_key_data));
if (key_data == NULL) {
ret = ENOMEM;
goto done;
}
for (i = 0, nkeys = 0; i < kdb->n_key_data; i++) {
if (kvno != 0 && kvno != kdb->key_data[i].key_data_kvno)
continue;
key_data[nkeys].kvno = kdb->key_data[i].key_data_kvno;
ret = krb5_dbe_decrypt_key_data(handle->context, NULL,
&kdb->key_data[i],
&key_data[nkeys].key,
&key_data[nkeys].salt);
if (ret)
goto done;
nkeys++;
}
*n_key_data_out = nkeys;
*key_data_out = key_data;
key_data = NULL;
nkeys = 0;
ret = KADM5_OK;
done:
kdb_free_entry(handle, kdb, &adb);
kadm5_free_kadm5_key_data(handle->context, nkeys, key_data);
return ret;
}
/*
* Allocate an array of n_key_data krb5_keyblocks, fill in each
* element with the results of decrypting the nth key in key_data,
* and if n_keys is not NULL fill it in with the
* number of keys decrypted.
*/
static int decrypt_key_data(krb5_context context,
int n_key_data, krb5_key_data *key_data,
krb5_keyblock **keyblocks, int *n_keys)
{
krb5_keyblock *keys;
int ret, i;
keys = (krb5_keyblock *) malloc(n_key_data*sizeof(krb5_keyblock));
if (keys == NULL)
return ENOMEM;
memset(keys, 0, n_key_data*sizeof(krb5_keyblock));
for (i = 0; i < n_key_data; i++) {
ret = krb5_dbe_decrypt_key_data(context, NULL, &key_data[i], &keys[i],
NULL);
if (ret) {
for (; i >= 0; i--) {
if (keys[i].contents) {
memset (keys[i].contents, 0, keys[i].length);
free( keys[i].contents );
}
}
memset(keys, 0, n_key_data*sizeof(krb5_keyblock));
free(keys);
return ret;
}
}
*keyblocks = keys;
if (n_keys)
*n_keys = n_key_data;
return 0;
}
/*
* Function: kadm5_decrypt_key
*
* Purpose: Retrieves and decrypts a principal key.
*
* Arguments:
*
* server_handle (r) kadm5 handle
* entry (r) principal retrieved with kadm5_get_principal
* ktype (r) enctype to search for, or -1 to ignore
* stype (r) salt type to search for, or -1 to ignore
* kvno (r) kvno to search for, -1 for max, 0 for max
* only if it also matches ktype and stype
* keyblock (w) keyblock to fill in
* keysalt (w) keysalt to fill in, or NULL
* kvnop (w) kvno to fill in, or NULL
*
* Effects: Searches the key_data array of entry, which must have been
* retrived with kadm5_get_principal with the KADM5_KEY_DATA mask, to
* find a key with a specified enctype, salt type, and kvno in a
* principal entry. If not found, return ENOENT. Otherwise, decrypt
* it with the master key, and return the key in keyblock, the salt
* in salttype, and the key version number in kvno.
*
* If ktype or stype is -1, it is ignored for the search. If kvno is
* -1, ktype and stype are ignored and the key with the max kvno is
* returned. If kvno is 0, only the key with the max kvno is returned
* and only if it matches the ktype and stype; otherwise, ENOENT is
* returned.
*/
kadm5_ret_t kadm5_decrypt_key(void *server_handle,
kadm5_principal_ent_t entry, krb5_int32
ktype, krb5_int32 stype, krb5_int32
kvno, krb5_keyblock *keyblock,
krb5_keysalt *keysalt, int *kvnop)
{
kadm5_server_handle_t handle = server_handle;
krb5_db_entry dbent;
krb5_key_data *key_data;
krb5_keyblock *mkey_ptr;
int ret;
CHECK_HANDLE(server_handle);
if (entry->n_key_data == 0 || entry->key_data == NULL)
return EINVAL;
/* find_enctype only uses these two fields */
dbent.n_key_data = entry->n_key_data;
dbent.key_data = entry->key_data;
if ((ret = krb5_dbe_find_enctype(handle->context, &dbent, ktype,
stype, kvno, &key_data)))
return ret;
/* find_mkey only uses this field */
dbent.tl_data = entry->tl_data;
if ((ret = krb5_dbe_find_mkey(handle->context, &dbent, &mkey_ptr))) {
/* try refreshing master key list */
/* XXX it would nice if we had the mkvno here for optimization */
if (krb5_db_fetch_mkey_list(handle->context, master_princ,
&master_keyblock) == 0) {
if ((ret = krb5_dbe_find_mkey(handle->context, &dbent,
&mkey_ptr))) {
return ret;
}
} else {
return ret;
}
}
if ((ret = krb5_dbe_decrypt_key_data(handle->context, NULL, key_data,
keyblock, keysalt)))
return ret;
/*
* Coerce the enctype of the output keyblock in case we got an
* inexact match on the enctype; this behavior will go away when
* the key storage architecture gets redesigned for 1.3.
*/
if (ktype != -1)
keyblock->enctype = ktype;
if (kvnop)
*kvnop = key_data->key_data_kvno;
return KADM5_OK;
}
kadm5_ret_t
kadm5_purgekeys(void *server_handle,
krb5_principal principal,
int keepkvno)
{
kadm5_server_handle_t handle = server_handle;
kadm5_ret_t ret;
krb5_db_entry *kdb;
osa_princ_ent_rec adb;
krb5_key_data *old_keydata;
int n_old_keydata;
int i, j, k;
CHECK_HANDLE(server_handle);
if (principal == NULL)
return EINVAL;
ret = kdb_get_entry(handle, principal, &kdb, &adb);
if (ret)
return(ret);
if (keepkvno <= 0) {
keepkvno = krb5_db_get_key_data_kvno(handle->context, kdb->n_key_data,
kdb->key_data);
}
old_keydata = kdb->key_data;
n_old_keydata = kdb->n_key_data;
kdb->n_key_data = 0;
/* Allocate one extra key_data to avoid allocating 0 bytes. */
kdb->key_data = calloc(n_old_keydata, sizeof(krb5_key_data));
if (kdb->key_data == NULL) {
ret = ENOMEM;
goto done;
}
memset(kdb->key_data, 0, n_old_keydata * sizeof(krb5_key_data));
for (i = 0, j = 0; i < n_old_keydata; i++) {
if (old_keydata[i].key_data_kvno < keepkvno)
continue;
/* Alias the key_data_contents pointers; we null them out in the
* source array immediately after. */
kdb->key_data[j] = old_keydata[i];
for (k = 0; k < old_keydata[i].key_data_ver; k++) {
old_keydata[i].key_data_contents[k] = NULL;
}
j++;
}
kdb->n_key_data = j;
cleanup_key_data(handle->context, n_old_keydata, old_keydata);
kdb->mask = KADM5_KEY_DATA;
ret = kdb_put_entry(handle, kdb, &adb);
if (ret)
goto done;
done:
kdb_free_entry(handle, kdb, &adb);
return ret;
}
kadm5_ret_t
kadm5_get_strings(void *server_handle, krb5_principal principal,
krb5_string_attr **strings_out, int *count_out)
{
kadm5_server_handle_t handle = server_handle;
kadm5_ret_t ret;
krb5_db_entry *kdb = NULL;
*strings_out = NULL;
*count_out = 0;
CHECK_HANDLE(server_handle);
if (principal == NULL)
return EINVAL;
ret = kdb_get_entry(handle, principal, &kdb, NULL);
if (ret)
return ret;
ret = krb5_dbe_get_strings(handle->context, kdb, strings_out, count_out);
kdb_free_entry(handle, kdb, NULL);
return ret;
}
kadm5_ret_t
kadm5_set_string(void *server_handle, krb5_principal principal,
const char *key, const char *value)
{
kadm5_server_handle_t handle = server_handle;
kadm5_ret_t ret;
krb5_db_entry *kdb;
osa_princ_ent_rec adb;
CHECK_HANDLE(server_handle);
if (principal == NULL || key == NULL)
return EINVAL;
ret = kdb_get_entry(handle, principal, &kdb, &adb);
if (ret)
return ret;
ret = krb5_dbe_set_string(handle->context, kdb, key, value);
if (ret)
goto done;
kdb->mask = KADM5_TL_DATA;
ret = kdb_put_entry(handle, kdb, &adb);
done:
kdb_free_entry(handle, kdb, &adb);
return ret;
}
|