summaryrefslogtreecommitdiff
path: root/source3/auth/auth_util.c
blob: f149b19c0e4546967b9ae413b8edd636c0710cce (plain)
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
/*
   Unix SMB/CIFS implementation.
   Authentication utility functions
   Copyright (C) Andrew Tridgell 1992-1998
   Copyright (C) Andrew Bartlett 2001
   Copyright (C) Jeremy Allison 2000-2001
   Copyright (C) Rafal Szczesniak 2002
   Copyright (C) Volker Lendecke 2006

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program 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 for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "smbd/globals.h"
#include "../libcli/auth/libcli_auth.h"

#undef DBGC_CLASS
#define DBGC_CLASS DBGC_AUTH

/****************************************************************************
 Ensure primary group SID is always at position 0 in a 
 auth_serversupplied_info struct.
****************************************************************************/

static void sort_sid_array_for_smbd(struct auth_serversupplied_info *result,
				const DOM_SID *pgroup_sid)
{
	unsigned int i;

	if (!result->sids) {
		return;
	}

	if (sid_compare(&result->sids[0], pgroup_sid)==0) {
		return;
	}

	for (i = 1; i < result->num_sids; i++) {
		if (sid_compare(pgroup_sid,
				&result->sids[i]) == 0) {
			sid_copy(&result->sids[i], &result->sids[0]);
			sid_copy(&result->sids[0], pgroup_sid);
			return;
		}
	}
}

/****************************************************************************
 Create a UNIX user on demand.
****************************************************************************/

static int _smb_create_user(const char *domain, const char *unix_username, const char *homedir)
{
	TALLOC_CTX *ctx = talloc_tos();
	char *add_script;
	int ret;

	add_script = talloc_strdup(ctx, lp_adduser_script());
	if (!add_script || !*add_script) {
		return -1;
	}
	add_script = talloc_all_string_sub(ctx,
				add_script,
				"%u",
				unix_username);
	if (!add_script) {
		return -1;
	}
	if (domain) {
		add_script = talloc_all_string_sub(ctx,
					add_script,
					"%D",
					domain);
		if (!add_script) {
			return -1;
		}
	}
	if (homedir) {
		add_script = talloc_all_string_sub(ctx,
				add_script,
				"%H",
				homedir);
		if (!add_script) {
			return -1;
		}
	}
	ret = smbrun(add_script,NULL);
	flush_pwnam_cache();
	DEBUG(ret ? 0 : 3,
		("smb_create_user: Running the command `%s' gave %d\n",
		 add_script,ret));
	return ret;
}

/****************************************************************************
 Create an auth_usersupplied_data structure
****************************************************************************/

static NTSTATUS make_user_info(struct auth_usersupplied_info **user_info,
                               const char *smb_name,
                               const char *internal_username,
                               const char *client_domain,
                               const char *domain,
                               const char *wksta_name,
                               DATA_BLOB *lm_pwd, DATA_BLOB *nt_pwd,
                               DATA_BLOB *lm_interactive_pwd, DATA_BLOB *nt_interactive_pwd,
                               DATA_BLOB *plaintext,
                               bool encrypted)
{

	DEBUG(5,("attempting to make a user_info for %s (%s)\n", internal_username, smb_name));

	*user_info = SMB_MALLOC_P(struct auth_usersupplied_info);
	if (*user_info == NULL) {
		DEBUG(0,("malloc failed for user_info (size %lu)\n", (unsigned long)sizeof(*user_info)));
		return NT_STATUS_NO_MEMORY;
	}

	ZERO_STRUCTP(*user_info);

	DEBUG(5,("making strings for %s's user_info struct\n", internal_username));

	(*user_info)->smb_name = SMB_STRDUP(smb_name);
	if ((*user_info)->smb_name == NULL) { 
		free_user_info(user_info);
		return NT_STATUS_NO_MEMORY;
	}

	(*user_info)->internal_username = SMB_STRDUP(internal_username);
	if ((*user_info)->internal_username == NULL) { 
		free_user_info(user_info);
		return NT_STATUS_NO_MEMORY;
	}

	(*user_info)->domain = SMB_STRDUP(domain);
	if ((*user_info)->domain == NULL) { 
		free_user_info(user_info);
		return NT_STATUS_NO_MEMORY;
	}

	(*user_info)->client_domain = SMB_STRDUP(client_domain);
	if ((*user_info)->client_domain == NULL) { 
		free_user_info(user_info);
		return NT_STATUS_NO_MEMORY;
	}

	(*user_info)->wksta_name = SMB_STRDUP(wksta_name);
	if ((*user_info)->wksta_name == NULL) { 
		free_user_info(user_info);
		return NT_STATUS_NO_MEMORY;
	}

	DEBUG(5,("making blobs for %s's user_info struct\n", internal_username));

	if (lm_pwd)
		(*user_info)->lm_resp = data_blob(lm_pwd->data, lm_pwd->length);
	if (nt_pwd)
		(*user_info)->nt_resp = data_blob(nt_pwd->data, nt_pwd->length);
	if (lm_interactive_pwd)
		(*user_info)->lm_interactive_pwd = data_blob(lm_interactive_pwd->data, lm_interactive_pwd->length);
	if (nt_interactive_pwd)
		(*user_info)->nt_interactive_pwd = data_blob(nt_interactive_pwd->data, nt_interactive_pwd->length);

	if (plaintext)
		(*user_info)->plaintext_password = data_blob(plaintext->data, plaintext->length);

	(*user_info)->encrypted = encrypted;

	(*user_info)->logon_parameters = 0;

	DEBUG(10,("made an %sencrypted user_info for %s (%s)\n", encrypted ? "":"un" , internal_username, smb_name));

	return NT_STATUS_OK;
}

/****************************************************************************
 Create an auth_usersupplied_data structure after appropriate mapping.
****************************************************************************/

NTSTATUS make_user_info_map(struct auth_usersupplied_info **user_info,
			    const char *smb_name,
			    const char *client_domain,
			    const char *wksta_name,
			    DATA_BLOB *lm_pwd,
			    DATA_BLOB *nt_pwd,
			    DATA_BLOB *lm_interactive_pwd,
			    DATA_BLOB *nt_interactive_pwd,
			    DATA_BLOB *plaintext,
			    bool encrypted)
{
	struct smbd_server_connection *sconn = smbd_server_conn;
	const char *domain;
	NTSTATUS result;
	bool was_mapped;
	fstring internal_username;
	fstrcpy(internal_username, smb_name);
	was_mapped = map_username(sconn, internal_username);

	DEBUG(5, ("Mapping user [%s]\\[%s] from workstation [%s]\n",
		 client_domain, smb_name, wksta_name));

	domain = client_domain;

	/* If you connect to a Windows domain member using a bogus domain name,
	 * the Windows box will map the BOGUS\user to SAMNAME\user.  Thus, if
	 * the Windows box is a DC the name will become DOMAIN\user and be
	 * authenticated against AD, if the Windows box is a member server but
	 * not a DC the name will become WORKSTATION\user.  A standalone
	 * non-domain member box will also map to WORKSTATION\user.
	 * This also deals with the client passing in a "" domain */

	if (!is_trusted_domain(domain) &&
	    !strequal(domain, my_sam_name()))
	{
		if (lp_map_untrusted_to_domain())
			domain = my_sam_name();
		else
			domain = get_global_sam_name();
		DEBUG(5, ("Mapped domain from [%s] to [%s] for user [%s] from "
			  "workstation [%s]\n",
			  client_domain, domain, smb_name, wksta_name));
	}

	/* We know that the given domain is trusted (and we are allowing them),
	 * it is our global SAM name, or for legacy behavior it is our
	 * primary domain name */

	result = make_user_info(user_info, smb_name, internal_username,
			      client_domain, domain, wksta_name,
			      lm_pwd, nt_pwd,
			      lm_interactive_pwd, nt_interactive_pwd,
			      plaintext, encrypted);
	if (NT_STATUS_IS_OK(result)) {
		(*user_info)->was_mapped = was_mapped;
	}
	return result;
}

/****************************************************************************
 Create an auth_usersupplied_data, making the DATA_BLOBs here. 
 Decrypt and encrypt the passwords.
****************************************************************************/

bool make_user_info_netlogon_network(struct auth_usersupplied_info **user_info,
				     const char *smb_name, 
				     const char *client_domain, 
				     const char *wksta_name, 
				     uint32 logon_parameters,
				     const uchar *lm_network_pwd,
				     int lm_pwd_len,
				     const uchar *nt_network_pwd,
				     int nt_pwd_len)
{
	bool ret;
	NTSTATUS status;
	DATA_BLOB lm_blob = data_blob(lm_network_pwd, lm_pwd_len);
	DATA_BLOB nt_blob = data_blob(nt_network_pwd, nt_pwd_len);

	status = make_user_info_map(user_info,
				    smb_name, client_domain, 
				    wksta_name, 
				    lm_pwd_len ? &lm_blob : NULL, 
				    nt_pwd_len ? &nt_blob : NULL,
				    NULL, NULL, NULL,
				    True);

	if (NT_STATUS_IS_OK(status)) {
		(*user_info)->logon_parameters = logon_parameters;
	}
	ret = NT_STATUS_IS_OK(status) ? True : False;

	data_blob_free(&lm_blob);
	data_blob_free(&nt_blob);
	return ret;
}

/****************************************************************************
 Create an auth_usersupplied_data, making the DATA_BLOBs here. 
 Decrypt and encrypt the passwords.
****************************************************************************/

bool make_user_info_netlogon_interactive(struct auth_usersupplied_info **user_info,
					 const char *smb_name, 
					 const char *client_domain, 
					 const char *wksta_name, 
					 uint32 logon_parameters,
					 const uchar chal[8], 
					 const uchar lm_interactive_pwd[16], 
					 const uchar nt_interactive_pwd[16], 
					 const uchar *dc_sess_key)
{
	unsigned char lm_pwd[16];
	unsigned char nt_pwd[16];
	unsigned char local_lm_response[24];
	unsigned char local_nt_response[24];
	unsigned char key[16];

	memcpy(key, dc_sess_key, 16);

	if (lm_interactive_pwd)
		memcpy(lm_pwd, lm_interactive_pwd, sizeof(lm_pwd));

	if (nt_interactive_pwd)
		memcpy(nt_pwd, nt_interactive_pwd, sizeof(nt_pwd));

#ifdef DEBUG_PASSWORD
	DEBUG(100,("key:"));
	dump_data(100, key, sizeof(key));

	DEBUG(100,("lm owf password:"));
	dump_data(100, lm_pwd, sizeof(lm_pwd));

	DEBUG(100,("nt owf password:"));
	dump_data(100, nt_pwd, sizeof(nt_pwd));
#endif

	if (lm_interactive_pwd)
		arcfour_crypt(lm_pwd, key, sizeof(lm_pwd));

	if (nt_interactive_pwd)
		arcfour_crypt(nt_pwd, key, sizeof(nt_pwd));

#ifdef DEBUG_PASSWORD
	DEBUG(100,("decrypt of lm owf password:"));
	dump_data(100, lm_pwd, sizeof(lm_pwd));

	DEBUG(100,("decrypt of nt owf password:"));
	dump_data(100, nt_pwd, sizeof(nt_pwd));
#endif

	if (lm_interactive_pwd)
		SMBOWFencrypt(lm_pwd, chal,
			      local_lm_response);

	if (nt_interactive_pwd)
		SMBOWFencrypt(nt_pwd, chal,
			      local_nt_response);

	/* Password info paranoia */
	ZERO_STRUCT(key);

	{
		bool ret;
		NTSTATUS nt_status;
		DATA_BLOB local_lm_blob;
		DATA_BLOB local_nt_blob;

		DATA_BLOB lm_interactive_blob;
		DATA_BLOB nt_interactive_blob;

		if (lm_interactive_pwd) {
			local_lm_blob = data_blob(local_lm_response,
						  sizeof(local_lm_response));
			lm_interactive_blob = data_blob(lm_pwd,
							sizeof(lm_pwd));
			ZERO_STRUCT(lm_pwd);
		}

		if (nt_interactive_pwd) {
			local_nt_blob = data_blob(local_nt_response,
						  sizeof(local_nt_response));
			nt_interactive_blob = data_blob(nt_pwd,
							sizeof(nt_pwd));
			ZERO_STRUCT(nt_pwd);
		}

		nt_status = make_user_info_map(
			user_info, 
			smb_name, client_domain, wksta_name, 
			lm_interactive_pwd ? &local_lm_blob : NULL,
			nt_interactive_pwd ? &local_nt_blob : NULL,
			lm_interactive_pwd ? &lm_interactive_blob : NULL,
			nt_interactive_pwd ? &nt_interactive_blob : NULL,
			NULL, True);

		if (NT_STATUS_IS_OK(nt_status)) {
			(*user_info)->logon_parameters = logon_parameters;
		}

		ret = NT_STATUS_IS_OK(nt_status) ? True : False;
		data_blob_free(&local_lm_blob);
		data_blob_free(&local_nt_blob);
		data_blob_free(&lm_interactive_blob);
		data_blob_free(&nt_interactive_blob);
		return ret;
	}
}


/****************************************************************************
 Create an auth_usersupplied_data structure
****************************************************************************/

bool make_user_info_for_reply(struct auth_usersupplied_info **user_info,
			      const char *smb_name, 
			      const char *client_domain,
			      const uint8 chal[8],
			      DATA_BLOB plaintext_password)
{

	DATA_BLOB local_lm_blob;
	DATA_BLOB local_nt_blob;
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;

	/*
	 * Not encrypted - do so.
	 */

	DEBUG(5,("make_user_info_for_reply: User passwords not in encrypted "
		 "format.\n"));

	if (plaintext_password.data && plaintext_password.length) {
		unsigned char local_lm_response[24];

#ifdef DEBUG_PASSWORD
		DEBUG(10,("Unencrypted password (len %d):\n",
			  (int)plaintext_password.length));
		dump_data(100, plaintext_password.data,
			  plaintext_password.length);
#endif

		SMBencrypt( (const char *)plaintext_password.data,
			    (const uchar*)chal, local_lm_response);
		local_lm_blob = data_blob(local_lm_response, 24);

		/* We can't do an NT hash here, as the password needs to be
		   case insensitive */
		local_nt_blob = data_blob_null; 
	} else {
		local_lm_blob = data_blob_null; 
		local_nt_blob = data_blob_null; 
	}

	ret = make_user_info_map(
		user_info, smb_name, client_domain, 
		get_remote_machine_name(),
		local_lm_blob.data ? &local_lm_blob : NULL,
		local_nt_blob.data ? &local_nt_blob : NULL,
		NULL, NULL,
		plaintext_password.data && plaintext_password.length ? &plaintext_password : NULL, 
		False);

	data_blob_free(&local_lm_blob);
	return NT_STATUS_IS_OK(ret) ? True : False;
}

/****************************************************************************
 Create an auth_usersupplied_data structure
****************************************************************************/

NTSTATUS make_user_info_for_reply_enc(struct auth_usersupplied_info **user_info,
                                      const char *smb_name,
                                      const char *client_domain, 
                                      DATA_BLOB lm_resp, DATA_BLOB nt_resp)
{
	return make_user_info_map(user_info, smb_name, 
				  client_domain, 
				  get_remote_machine_name(), 
				  lm_resp.data ? &lm_resp : NULL, 
				  nt_resp.data ? &nt_resp : NULL, 
				  NULL, NULL, NULL,
				  True);
}

/****************************************************************************
 Create a guest user_info blob, for anonymous authenticaion.
****************************************************************************/

bool make_user_info_guest(struct auth_usersupplied_info **user_info)
{
	NTSTATUS nt_status;

	nt_status = make_user_info(user_info, 
				   "","", 
				   "","", 
				   "", 
				   NULL, NULL, 
				   NULL, NULL, 
				   NULL,
				   True);

	return NT_STATUS_IS_OK(nt_status) ? True : False;
}

static int server_info_dtor(struct auth_serversupplied_info *server_info)
{
	TALLOC_FREE(server_info->sam_account);
	ZERO_STRUCTP(server_info);
	return 0;
}

/***************************************************************************
 Make a server_info struct. Free with TALLOC_FREE().
***************************************************************************/

static struct auth_serversupplied_info *make_server_info(TALLOC_CTX *mem_ctx)
{
	struct auth_serversupplied_info *result;

	result = TALLOC_ZERO_P(mem_ctx, struct auth_serversupplied_info);
	if (result == NULL) {
		DEBUG(0, ("talloc failed\n"));
		return NULL;
	}

	talloc_set_destructor(result, server_info_dtor);

	/* Initialise the uid and gid values to something non-zero
	   which may save us from giving away root access if there
	   is a bug in allocating these fields. */

	result->utok.uid = -1;
	result->utok.gid = -1;
	return result;
}

static char *sanitize_username(TALLOC_CTX *mem_ctx, const char *username)
{
	fstring tmp;

	alpha_strcpy(tmp, username, ". _-$", sizeof(tmp));
	return talloc_strdup(mem_ctx, tmp);
}

/***************************************************************************
 Is the incoming username our own machine account ?
 If so, the connection is almost certainly from winbindd.
***************************************************************************/

static bool is_our_machine_account(const char *username)
{
	bool ret;
	char *truncname = NULL;
	size_t ulen = strlen(username);

	if (ulen == 0 || username[ulen-1] != '$') {
		return false;
	}
	truncname = SMB_STRDUP(username);
	if (!truncname) {
		return false;
	}
	truncname[ulen-1] = '\0';
	ret = strequal(truncname, global_myname());
	SAFE_FREE(truncname);
	return ret;
}

/***************************************************************************
 Make (and fill) a user_info struct from a struct samu
***************************************************************************/

NTSTATUS make_server_info_sam(struct auth_serversupplied_info **server_info,
			      struct samu *sampass)
{
	struct passwd *pwd;
	gid_t *gids;
	struct auth_serversupplied_info *result;
	const char *username = pdb_get_username(sampass);
	NTSTATUS status;

	if ( !(result = make_server_info(NULL)) ) {
		return NT_STATUS_NO_MEMORY;
	}

	if ( !(pwd = getpwnam_alloc(result, username)) ) {
		DEBUG(1, ("User %s in passdb, but getpwnam() fails!\n",
			  pdb_get_username(sampass)));
		TALLOC_FREE(result);
		return NT_STATUS_NO_SUCH_USER;
	}

	result->sam_account = sampass;
	result->unix_name = pwd->pw_name;
	/* Ensure that we keep pwd->pw_name, because we will free pwd below */
	talloc_steal(result, pwd->pw_name);
	result->utok.gid = pwd->pw_gid;
	result->utok.uid = pwd->pw_uid;

	TALLOC_FREE(pwd);

	result->sanitized_username = sanitize_username(result,
						       result->unix_name);
	if (result->sanitized_username == NULL) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	if (IS_DC && is_our_machine_account(username)) {
		/*
		 * Ensure for a connection from our own
		 * machine account (from winbindd on a DC)
		 * there are no supplementary groups.
		 * Prevents loops in calling gid_to_sid().
		 */
		result->sids = NULL;
		gids = NULL;
		result->num_sids = 0;

		/*
		 * This is a hack of monstrous proportions.
		 * If we know it's winbindd talking to us,
		 * we know we must never recurse into it,
		 * so turn off contacting winbindd for this
		 * entire process. This will get fixed when
		 * winbindd doesn't need to talk to smbd on
		 * a PDC. JRA.
		 */

		(void)winbind_off();

		DEBUG(10, ("make_server_info_sam: our machine account %s "
			"setting supplementary group list empty and "
			"turning off winbindd requests.\n",
			username));
	} else {
		status = pdb_enum_group_memberships(result, sampass,
					    &result->sids, &gids,
					    &result->num_sids);

		if (!NT_STATUS_IS_OK(status)) {
			DEBUG(10, ("pdb_enum_group_memberships failed: %s\n",
				   nt_errstr(status)));
			result->sam_account = NULL; /* Don't free on error exit. */
			TALLOC_FREE(result);
			return status;
		}
	}

	/* For now we throw away the gids and convert via sid_to_gid
	 * later. This needs fixing, but I'd like to get the code straight and
	 * simple first. */

	TALLOC_FREE(gids);

	DEBUG(5,("make_server_info_sam: made server info for user %s -> %s\n",
		 pdb_get_username(sampass), result->unix_name));

	*server_info = result;
	/* Ensure that the sampass will be freed with the result */
	talloc_steal(result, sampass);

	return NT_STATUS_OK;
}

static NTSTATUS log_nt_token(NT_USER_TOKEN *token)
{
	TALLOC_CTX *frame = talloc_stackframe();
	char *command;
	char *group_sidstr;
	size_t i;

	if ((lp_log_nt_token_command() == NULL) ||
	    (strlen(lp_log_nt_token_command()) == 0)) {
		TALLOC_FREE(frame);
		return NT_STATUS_OK;
	}

	group_sidstr = talloc_strdup(frame, "");
	for (i=1; i<token->num_sids; i++) {
		group_sidstr = talloc_asprintf(
			frame, "%s %s", group_sidstr,
			sid_string_talloc(frame, &token->user_sids[i]));
	}

	command = talloc_string_sub(
		frame, lp_log_nt_token_command(),
		"%s", sid_string_talloc(frame, &token->user_sids[0]));
	command = talloc_string_sub(frame, command, "%t", group_sidstr);

	if (command == NULL) {
		TALLOC_FREE(frame);
		return NT_STATUS_NO_MEMORY;
	}

	DEBUG(8, ("running command: [%s]\n", command));
	if (smbrun(command, NULL) != 0) {
		DEBUG(0, ("Could not log NT token\n"));
		TALLOC_FREE(frame);
		return NT_STATUS_ACCESS_DENIED;
	}

	TALLOC_FREE(frame);
	return NT_STATUS_OK;
}

/*
 * Create the token to use from server_info->sam_account and
 * server_info->sids (the info3/sam groups). Find the unix gids.
 */

NTSTATUS create_local_token(struct auth_serversupplied_info *server_info)
{
	NTSTATUS status;
	size_t i;
	struct dom_sid tmp_sid;

	/*
	 * If winbind is not around, we can not make much use of the SIDs the
	 * domain controller provided us with. Likewise if the user name was
	 * mapped to some local unix user.
	 */

	if (((lp_server_role() == ROLE_DOMAIN_MEMBER) && !winbind_ping()) ||
	    (server_info->nss_token)) {
		status = create_token_from_username(server_info,
						    server_info->unix_name,
						    server_info->guest,
						    &server_info->utok.uid,
						    &server_info->utok.gid,
						    &server_info->unix_name,
						    &server_info->ptok);

	} else {
		server_info->ptok = create_local_nt_token(
			server_info,
			pdb_get_user_sid(server_info->sam_account),
			server_info->guest,
			server_info->num_sids, server_info->sids);
		status = server_info->ptok ?
			NT_STATUS_OK : NT_STATUS_NO_SUCH_USER;
	}

	if (!NT_STATUS_IS_OK(status)) {
		return status;
	}

	/* Convert the SIDs to gids. */

	server_info->utok.ngroups = 0;
	server_info->utok.groups = NULL;

	/* Start at index 1, where the groups start. */

	for (i=1; i<server_info->ptok->num_sids; i++) {
		gid_t gid;
		DOM_SID *sid = &server_info->ptok->user_sids[i];

		if (!sid_to_gid(sid, &gid)) {
			DEBUG(10, ("Could not convert SID %s to gid, "
				   "ignoring it\n", sid_string_dbg(sid)));
			continue;
		}
		add_gid_to_array_unique(server_info, gid,
					&server_info->utok.groups,
					&server_info->utok.ngroups);
	}

	/*
	 * Add the "Unix Group" SID for each gid to catch mapped groups
	 * and their Unix equivalent.  This is to solve the backwards
	 * compatibility problem of 'valid users = +ntadmin' where
	 * ntadmin has been paired with "Domain Admins" in the group
	 * mapping table.  Otherwise smb.conf would need to be changed
	 * to 'valid user = "Domain Admins"'.  --jerry
	 *
	 * For consistency we also add the "Unix User" SID,
	 * so that the complete unix token is represented within
	 * the nt token.
	 */

	if (!uid_to_unix_users_sid(server_info->utok.uid, &tmp_sid)) {
		DEBUG(1,("create_local_token: Failed to create SID "
			"for uid %u!\n", (unsigned int)server_info->utok.uid));
	}
	add_sid_to_array_unique(server_info->ptok, &tmp_sid,
				&server_info->ptok->user_sids,
				&server_info->ptok->num_sids);

	for ( i=0; i<server_info->utok.ngroups; i++ ) {
		if (!gid_to_unix_groups_sid( server_info->utok.groups[i], &tmp_sid ) ) {
			DEBUG(1,("create_local_token: Failed to create SID "
				"for gid %u!\n", (unsigned int)server_info->utok.groups[i]));
			continue;
		}
		add_sid_to_array_unique(server_info->ptok, &tmp_sid,
					&server_info->ptok->user_sids,
					&server_info->ptok->num_sids);
	}

	debug_nt_user_token(DBGC_AUTH, 10, server_info->ptok);
	debug_unix_user_token(DBGC_AUTH, 10,
			      server_info->utok.uid,
			      server_info->utok.gid,
			      server_info->utok.ngroups,
			      server_info->utok.groups);

	status = log_nt_token(server_info->ptok);
	return status;
}

/*
 * Create an artificial NT token given just a username. (Initially intended
 * for force user)
 *
 * We go through lookup_name() to avoid problems we had with 'winbind use
 * default domain'.
 *
 * We have 3 cases:
 *
 * unmapped unix users: Go directly to nss to find the user's group.
 *
 * A passdb user: The list of groups is provided by pdb_enum_group_memberships.
 *
 * If the user is provided by winbind, the primary gid is set to "domain
 * users" of the user's domain. For an explanation why this is necessary, see
 * the thread starting at
 * http://lists.samba.org/archive/samba-technical/2006-January/044803.html.
 */

NTSTATUS create_token_from_username(TALLOC_CTX *mem_ctx, const char *username,
				    bool is_guest,
				    uid_t *uid, gid_t *gid,
				    char **found_username,
				    struct nt_user_token **token)
{
	NTSTATUS result = NT_STATUS_NO_SUCH_USER;
	TALLOC_CTX *tmp_ctx;
	DOM_SID user_sid;
	enum lsa_SidType type;
	gid_t *gids;
	DOM_SID *group_sids;
	DOM_SID unix_group_sid;
	size_t num_group_sids;
	size_t num_gids;
	size_t i;

	tmp_ctx = talloc_new(NULL);
	if (tmp_ctx == NULL) {
		DEBUG(0, ("talloc_new failed\n"));
		return NT_STATUS_NO_MEMORY;
	}

	if (!lookup_name_smbconf(tmp_ctx, username, LOOKUP_NAME_ALL,
			 NULL, NULL, &user_sid, &type)) {
		DEBUG(1, ("lookup_name_smbconf for %s failed\n", username));
		goto done;
	}

	if (type != SID_NAME_USER) {
		DEBUG(1, ("%s is a %s, not a user\n", username,
			  sid_type_lookup(type)));
		goto done;
	}

	if (sid_check_is_in_our_domain(&user_sid)) {
		bool ret;

		/* This is a passdb user, so ask passdb */

		struct samu *sam_acct = NULL;

		if ( !(sam_acct = samu_new( tmp_ctx )) ) {
			result = NT_STATUS_NO_MEMORY;
			goto done;
		}

		become_root();
		ret = pdb_getsampwsid(sam_acct, &user_sid);
		unbecome_root();

		if (!ret) {
			DEBUG(1, ("pdb_getsampwsid(%s) for user %s failed\n",
				  sid_string_dbg(&user_sid), username));
			DEBUGADD(1, ("Fall back to unix user %s\n", username));
			goto unix_user;
		}

		result = pdb_enum_group_memberships(tmp_ctx, sam_acct,
						    &group_sids, &gids,
						    &num_group_sids);
		if (!NT_STATUS_IS_OK(result)) {
			DEBUG(1, ("enum_group_memberships failed for %s (%s): "
				  "%s\n", username, sid_string_dbg(&user_sid),
				  nt_errstr(result)));
			DEBUGADD(1, ("Fall back to unix user %s\n", username));
			goto unix_user;
		}

		/* see the smb_panic() in pdb_default_enum_group_memberships */
		SMB_ASSERT(num_group_sids > 0); 

		*gid = gids[0];

		/* Ensure we're returning the found_username on the right context. */
		*found_username = talloc_strdup(mem_ctx,
						pdb_get_username(sam_acct));

		/*
		 * If the SID from lookup_name() was the guest sid, passdb knows
		 * about the mapping of guest sid to lp_guestaccount()
		 * username and will return the unix_pw info for a guest
		 * user. Use it if it's there, else lookup the *uid details
		 * using getpwnam_alloc(). See bug #6291 for details. JRA.
		 */

		/* We must always assign the *uid. */
		if (sam_acct->unix_pw == NULL) {
			struct passwd *pwd = getpwnam_alloc(sam_acct, *found_username );
			if (!pwd) {
				DEBUG(10, ("getpwnam_alloc failed for %s\n",
					*found_username));
				result = NT_STATUS_NO_SUCH_USER;
				goto done;
			}
			result = samu_set_unix(sam_acct, pwd );
			if (!NT_STATUS_IS_OK(result)) {
				DEBUG(10, ("samu_set_unix failed for %s\n",
					*found_username));
				result = NT_STATUS_NO_SUCH_USER;
				goto done;
			}
		}
		*uid = sam_acct->unix_pw->pw_uid;

	} else 	if (sid_check_is_in_unix_users(&user_sid)) {

		/* This is a unix user not in passdb. We need to ask nss
		 * directly, without consulting passdb */

		struct passwd *pass;

		/*
		 * This goto target is used as a fallback for the passdb
		 * case. The concrete bug report is when passdb gave us an
		 * unmapped gid.
		 */

	unix_user:

		if (!sid_to_uid(&user_sid, uid)) {
			DEBUG(1, ("unix_user case, sid_to_uid for %s (%s) failed\n",
				  username, sid_string_dbg(&user_sid)));
			result = NT_STATUS_NO_SUCH_USER;
			goto done;
		}

		uid_to_unix_users_sid(*uid, &user_sid);

		pass = getpwuid_alloc(tmp_ctx, *uid);
		if (pass == NULL) {
			DEBUG(1, ("getpwuid(%u) for user %s failed\n",
				  (unsigned int)*uid, username));
			goto done;
		}

		if (!getgroups_unix_user(tmp_ctx, username, pass->pw_gid,
					 &gids, &num_group_sids)) {
			DEBUG(1, ("getgroups_unix_user for user %s failed\n",
				  username));
			goto done;
		}

		if (num_group_sids) {
			group_sids = TALLOC_ARRAY(tmp_ctx, DOM_SID, num_group_sids);
			if (group_sids == NULL) {
				DEBUG(1, ("TALLOC_ARRAY failed\n"));
				result = NT_STATUS_NO_MEMORY;
				goto done;
			}
		} else {
			group_sids = NULL;
		}

		for (i=0; i<num_group_sids; i++) {
			gid_to_sid(&group_sids[i], gids[i]);
		}

		/* In getgroups_unix_user we always set the primary gid */
		SMB_ASSERT(num_group_sids > 0); 

		*gid = gids[0];

		/* Ensure we're returning the found_username on the right context. */
		*found_username = talloc_strdup(mem_ctx, pass->pw_name);
	} else {

		/* This user is from winbind, force the primary gid to the
		 * user's "domain users" group. Under certain circumstances
		 * (user comes from NT4), this might be a loss of
		 * information. But we can not rely on winbind getting the
		 * correct info. AD might prohibit winbind looking up that
		 * information. */

		uint32 dummy;

		/* We must always assign the *uid. */
		if (!sid_to_uid(&user_sid, uid)) {
			DEBUG(1, ("winbindd case, sid_to_uid for %s (%s) failed\n",
				  username, sid_string_dbg(&user_sid)));
			result = NT_STATUS_NO_SUCH_USER;
			goto done;
		}

		num_group_sids = 1;
		group_sids = TALLOC_ARRAY(tmp_ctx, DOM_SID, num_group_sids);
		if (group_sids == NULL) {
			DEBUG(1, ("TALLOC_ARRAY failed\n"));
			result = NT_STATUS_NO_MEMORY;
			goto done;
		}

		sid_copy(&group_sids[0], &user_sid);
		sid_split_rid(&group_sids[0], &dummy);
		sid_append_rid(&group_sids[0], DOMAIN_GROUP_RID_USERS);

		if (!sid_to_gid(&group_sids[0], gid)) {
			DEBUG(1, ("sid_to_gid(%s) failed\n",
				  sid_string_dbg(&group_sids[0])));
			goto done;
		}

		gids = gid;

		/* Ensure we're returning the found_username on the right context. */
		*found_username = talloc_strdup(mem_ctx, username);
	}

	/* Add the "Unix Group" SID for each gid to catch mapped groups
	   and their Unix equivalent.  This is to solve the backwards
	   compatibility problem of 'valid users = +ntadmin' where
	   ntadmin has been paired with "Domain Admins" in the group
	   mapping table.  Otherwise smb.conf would need to be changed
	   to 'valid user = "Domain Admins"'.  --jerry */

	num_gids = num_group_sids;
	for ( i=0; i<num_gids; i++ ) {
		gid_t high, low;

		/* don't pickup anything managed by Winbind */

		if ( lp_idmap_gid(&low, &high) && (gids[i] >= low) && (gids[i] <= high) )
			continue;

		if ( !gid_to_unix_groups_sid( gids[i], &unix_group_sid ) ) {
			DEBUG(1,("create_token_from_username: Failed to create SID "
				"for gid %u!\n", (unsigned int)gids[i]));
			continue;
		}
		result = add_sid_to_array_unique(tmp_ctx, &unix_group_sid,
						 &group_sids, &num_group_sids);
		if (!NT_STATUS_IS_OK(result)) {
			goto done;
		}
	}

	/* Ensure we're creating the nt_token on the right context. */
	*token = create_local_nt_token(mem_ctx, &user_sid,
				       is_guest, num_group_sids, group_sids);

	if ((*token == NULL) || (*found_username == NULL)) {
		result = NT_STATUS_NO_MEMORY;
		goto done;
	}

	result = NT_STATUS_OK;
 done:
	TALLOC_FREE(tmp_ctx);
	return result;
}

/***************************************************************************
 Build upon create_token_from_username:

 Expensive helper function to figure out whether a user given its name is
 member of a particular group.
***************************************************************************/

bool user_in_group_sid(const char *username, const DOM_SID *group_sid)
{
	NTSTATUS status;
	uid_t uid;
	gid_t gid;
	char *found_username;
	struct nt_user_token *token;
	bool result;

	TALLOC_CTX *mem_ctx;

	mem_ctx = talloc_new(NULL);
	if (mem_ctx == NULL) {
		DEBUG(0, ("talloc_new failed\n"));
		return False;
	}

	status = create_token_from_username(mem_ctx, username, False,
					    &uid, &gid, &found_username,
					    &token);

	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(10, ("could not create token for %s\n", username));
		return False;
	}

	result = nt_token_check_sid(group_sid, token);

	TALLOC_FREE(mem_ctx);
	return result;
}

bool user_in_group(const char *username, const char *groupname)
{
	TALLOC_CTX *mem_ctx;
	DOM_SID group_sid;
	bool ret;

	mem_ctx = talloc_new(NULL);
	if (mem_ctx == NULL) {
		DEBUG(0, ("talloc_new failed\n"));
		return False;
	}

	ret = lookup_name(mem_ctx, groupname, LOOKUP_NAME_ALL,
			  NULL, NULL, &group_sid, NULL);
	TALLOC_FREE(mem_ctx);

	if (!ret) {
		DEBUG(10, ("lookup_name for (%s) failed.\n", groupname));
		return False;
	}

	return user_in_group_sid(username, &group_sid);
}

/***************************************************************************
 Make (and fill) a server_info struct from a 'struct passwd' by conversion
 to a struct samu
***************************************************************************/

NTSTATUS make_server_info_pw(struct auth_serversupplied_info **server_info,
                             char *unix_username,
			     struct passwd *pwd)
{
	NTSTATUS status;
	struct samu *sampass = NULL;
	gid_t *gids;
	char *qualified_name = NULL;
	TALLOC_CTX *mem_ctx = NULL;
	DOM_SID u_sid;
	enum lsa_SidType type;
	struct auth_serversupplied_info *result;

	if ( !(sampass = samu_new( NULL )) ) {
		return NT_STATUS_NO_MEMORY;
	}

	status = samu_set_unix( sampass, pwd );
	if (!NT_STATUS_IS_OK(status)) {
		return status;
	}

	result = make_server_info(NULL);
	if (result == NULL) {
		TALLOC_FREE(sampass);
		return NT_STATUS_NO_MEMORY;
	}

	result->sam_account = sampass;

	result->unix_name = talloc_strdup(result, unix_username);
	result->sanitized_username = sanitize_username(result, unix_username);

	if ((result->unix_name == NULL)
	    || (result->sanitized_username == NULL)) {
		TALLOC_FREE(sampass);
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	result->utok.uid = pwd->pw_uid;
	result->utok.gid = pwd->pw_gid;

	status = pdb_enum_group_memberships(result, sampass,
					    &result->sids, &gids,
					    &result->num_sids);

	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(10, ("pdb_enum_group_memberships failed: %s\n",
			   nt_errstr(status)));
		TALLOC_FREE(result);
		return status;
	}

	/*
	 * The SID returned in server_info->sam_account is based
	 * on our SAM sid even though for a pure UNIX account this should
	 * not be the case as it doesn't really exist in the SAM db.
	 * This causes lookups on "[in]valid users" to fail as they
	 * will lookup this name as a "Unix User" SID to check against
	 * the user token. Fix this by adding the "Unix User"\unix_username
	 * SID to the sid array. The correct fix should probably be
	 * changing the server_info->sam_account user SID to be a
	 * S-1-22 Unix SID, but this might break old configs where
	 * plaintext passwords were used with no SAM backend.
	 */

	mem_ctx = talloc_init("make_server_info_pw_tmp");
	if (!mem_ctx) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	qualified_name = talloc_asprintf(mem_ctx, "%s\\%s",
					unix_users_domain_name(),
					unix_username );
	if (!qualified_name) {
		TALLOC_FREE(result);
		TALLOC_FREE(mem_ctx);
		return NT_STATUS_NO_MEMORY;
	}

	if (!lookup_name(mem_ctx, qualified_name, LOOKUP_NAME_ALL,
						NULL, NULL,
						&u_sid, &type)) {
		TALLOC_FREE(result);
		TALLOC_FREE(mem_ctx);
		return NT_STATUS_NO_SUCH_USER;
	}

	TALLOC_FREE(mem_ctx);

	if (type != SID_NAME_USER) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_SUCH_USER;
	}

	status = add_sid_to_array_unique(result, &u_sid,
					 &result->sids,
					 &result->num_sids);
	if (!NT_STATUS_IS_OK(status)) {
		TALLOC_FREE(result);
		return status;
	}

	/* For now we throw away the gids and convert via sid_to_gid
	 * later. This needs fixing, but I'd like to get the code straight and
	 * simple first. */
	TALLOC_FREE(gids);

	*server_info = result;

	return NT_STATUS_OK;
}

/***************************************************************************
 Make (and fill) a user_info struct for a guest login.
 This *must* succeed for smbd to start. If there is no mapping entry for
 the guest gid, then create one.
***************************************************************************/

static NTSTATUS make_new_server_info_guest(struct auth_serversupplied_info **server_info)
{
	NTSTATUS status;
	struct samu *sampass = NULL;
	DOM_SID guest_sid;
	bool ret;
	static const char zeros[16] = {0, };
	fstring tmp;

	if ( !(sampass = samu_new( NULL )) ) {
		return NT_STATUS_NO_MEMORY;
	}

	sid_compose(&guest_sid, get_global_sam_sid(), DOMAIN_USER_RID_GUEST);

	become_root();
	ret = pdb_getsampwsid(sampass, &guest_sid);
	unbecome_root();

	if (!ret) {
		TALLOC_FREE(sampass);
		return NT_STATUS_NO_SUCH_USER;
	}

	status = make_server_info_sam(server_info, sampass);
	if (!NT_STATUS_IS_OK(status)) {
		TALLOC_FREE(sampass);
		return status;
	}

	(*server_info)->guest = True;

	status = create_local_token(*server_info);
	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(10, ("create_local_token failed: %s\n",
			   nt_errstr(status)));
		return status;
	}

	/* annoying, but the Guest really does have a session key, and it is
	   all zeros! */
	(*server_info)->user_session_key = data_blob(zeros, sizeof(zeros));
	(*server_info)->lm_session_key = data_blob(zeros, sizeof(zeros));

	alpha_strcpy(tmp, pdb_get_username(sampass), ". _-$", sizeof(tmp));
	(*server_info)->sanitized_username = talloc_strdup(*server_info, tmp);

	return NT_STATUS_OK;
}

/****************************************************************************
  Fake a auth_serversupplied_info just from a username
****************************************************************************/

NTSTATUS make_serverinfo_from_username(TALLOC_CTX *mem_ctx,
				       const char *username,
				       bool is_guest,
				       struct auth_serversupplied_info **presult)
{
	struct auth_serversupplied_info *result;
	struct passwd *pwd;
	NTSTATUS status;

	pwd = getpwnam_alloc(talloc_tos(), username);
	if (pwd == NULL) {
		return NT_STATUS_NO_SUCH_USER;
	}

	status = make_server_info_pw(&result, pwd->pw_name, pwd);

	TALLOC_FREE(pwd);

	if (!NT_STATUS_IS_OK(status)) {
		return status;
	}

	result->nss_token = true;
	result->guest = is_guest;

	status = create_local_token(result);

	if (!NT_STATUS_IS_OK(status)) {
		TALLOC_FREE(result);
		return status;
	}

	*presult = result;
	return NT_STATUS_OK;
}


struct auth_serversupplied_info *copy_serverinfo(TALLOC_CTX *mem_ctx,
						 const struct auth_serversupplied_info *src)
{
	struct auth_serversupplied_info *dst;

	dst = make_server_info(mem_ctx);
	if (dst == NULL) {
		return NULL;
	}

	dst->guest = src->guest;
	dst->utok.uid = src->utok.uid;
	dst->utok.gid = src->utok.gid;
	dst->utok.ngroups = src->utok.ngroups;
	if (src->utok.ngroups != 0) {
		dst->utok.groups = (gid_t *)TALLOC_MEMDUP(
			dst, src->utok.groups,
			sizeof(gid_t)*dst->utok.ngroups);
	} else {
		dst->utok.groups = NULL;
	}

	if (src->ptok) {
		dst->ptok = dup_nt_token(dst, src->ptok);
		if (!dst->ptok) {
			TALLOC_FREE(dst);
			return NULL;
		}
	}

	dst->user_session_key = data_blob_talloc( dst, src->user_session_key.data,
						src->user_session_key.length);

	dst->lm_session_key = data_blob_talloc(dst, src->lm_session_key.data,
						src->lm_session_key.length);

	dst->sam_account = samu_new(NULL);
	if (!dst->sam_account) {
		TALLOC_FREE(dst);
		return NULL;
	}

	if (!pdb_copy_sam_account(dst->sam_account, src->sam_account)) {
		TALLOC_FREE(dst);
		return NULL;
	}

	dst->pam_handle = NULL;
	dst->unix_name = talloc_strdup(dst, src->unix_name);
	if (!dst->unix_name) {
		TALLOC_FREE(dst);
		return NULL;
	}

	dst->sanitized_username = talloc_strdup(dst, src->sanitized_username);
	if (!dst->sanitized_username) {
		TALLOC_FREE(dst);
		return NULL;
	}

	return dst;
}

/*
 * Set a new session key. Used in the rpc server where we have to override the
 * SMB level session key with SystemLibraryDTC
 */

bool server_info_set_session_key(struct auth_serversupplied_info *info,
				 DATA_BLOB session_key)
{
	TALLOC_FREE(info->user_session_key.data);

	info->user_session_key = data_blob_talloc(
		info, session_key.data, session_key.length);

	return (info->user_session_key.data != NULL);
}

static struct auth_serversupplied_info *guest_info = NULL;

bool init_guest_info(void)
{
	if (guest_info != NULL)
		return True;

	return NT_STATUS_IS_OK(make_new_server_info_guest(&guest_info));
}

NTSTATUS make_server_info_guest(TALLOC_CTX *mem_ctx,
				struct auth_serversupplied_info **server_info)
{
	*server_info = copy_serverinfo(mem_ctx, guest_info);
	return (*server_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
}

bool copy_current_user(struct current_user *dst, struct current_user *src)
{
	gid_t *groups;
	NT_USER_TOKEN *nt_token;

	groups = (gid_t *)memdup(src->ut.groups,
				 sizeof(gid_t) * src->ut.ngroups);
	if ((src->ut.ngroups != 0) && (groups == NULL)) {
		return False;
	}

	nt_token = dup_nt_token(NULL, src->nt_user_token);
	if (nt_token == NULL) {
		SAFE_FREE(groups);
		return False;
	}

	dst->conn = src->conn;
	dst->vuid = src->vuid;
	dst->ut.uid = src->ut.uid;
	dst->ut.gid = src->ut.gid;
	dst->ut.ngroups = src->ut.ngroups;
	dst->ut.groups = groups;
	dst->nt_user_token = nt_token;
	return True;
}

/***************************************************************************
 Purely internal function for make_server_info_info3
 Fill the sam account from getpwnam
***************************************************************************/
static NTSTATUS fill_sam_account(TALLOC_CTX *mem_ctx, 
				 const char *domain,
				 const char *username,
				 char **found_username,
				 uid_t *uid, gid_t *gid,
				 struct samu *account,
				 bool *username_was_mapped)
{
	struct smbd_server_connection *sconn = smbd_server_conn;
	NTSTATUS nt_status;
	fstring dom_user, lower_username;
	fstring real_username;
	struct passwd *passwd;

	fstrcpy( lower_username, username );
	strlower_m( lower_username );

	fstr_sprintf(dom_user, "%s%c%s", domain, *lp_winbind_separator(), 
		lower_username);

	/* Get the passwd struct.  Try to create the account is necessary. */

	*username_was_mapped = map_username(sconn, dom_user);

	if ( !(passwd = smb_getpwnam( NULL, dom_user, real_username, True )) )
		return NT_STATUS_NO_SUCH_USER;

	*uid = passwd->pw_uid;
	*gid = passwd->pw_gid;

	/* This is pointless -- there is no suport for differing 
	   unix and windows names.  Make sure to always store the 
	   one we actually looked up and succeeded. Have I mentioned
	   why I hate the 'winbind use default domain' parameter?   
	                                 --jerry              */

	*found_username = talloc_strdup( mem_ctx, real_username );

	DEBUG(5,("fill_sam_account: located username was [%s]\n", *found_username));

	nt_status = samu_set_unix( account, passwd );

	TALLOC_FREE(passwd);

	return nt_status;
}

/****************************************************************************
 Wrapper to allow the getpwnam() call to strip the domain name and 
 try again in case a local UNIX user is already there.  Also run through 
 the username if we fallback to the username only.
 ****************************************************************************/

struct passwd *smb_getpwnam( TALLOC_CTX *mem_ctx, char *domuser,
			     fstring save_username, bool create )
{
	struct passwd *pw = NULL;
	char *p;
	fstring username;

	/* we only save a copy of the username it has been mangled 
	   by winbindd use default domain */

	save_username[0] = '\0';

	/* don't call map_username() here since it has to be done higher 
	   up the stack so we don't call it multiple times */

	fstrcpy( username, domuser );

	p = strchr_m( username, *lp_winbind_separator() );

	/* code for a DOMAIN\user string */

	if ( p ) {
		fstring strip_username;

		pw = Get_Pwnam_alloc( mem_ctx, domuser );
		if ( pw ) {	
			/* make sure we get the case of the username correct */
			/* work around 'winbind use default domain = yes' */

			if ( !strchr_m( pw->pw_name, *lp_winbind_separator() ) ) {
				char *domain;

				/* split the domain and username into 2 strings */
				*p = '\0';
				domain = username;

				fstr_sprintf(save_username, "%s%c%s", domain, *lp_winbind_separator(), pw->pw_name);
			}
			else
				fstrcpy( save_username, pw->pw_name );

			/* whew -- done! */		
			return pw;
		}

		/* setup for lookup of just the username */
		/* remember that p and username are overlapping memory */

		p++;
		fstrcpy( strip_username, p );
		fstrcpy( username, strip_username );
	}

	/* just lookup a plain username */

	pw = Get_Pwnam_alloc(mem_ctx, username);

	/* Create local user if requested but only if winbindd
	   is not running.  We need to protect against cases
	   where winbindd is failing and then prematurely
	   creating users in /etc/passwd */

	if ( !pw && create && !winbind_ping() ) {
		/* Don't add a machine account. */
		if (username[strlen(username)-1] == '$')
			return NULL;

		_smb_create_user(NULL, username, NULL);
		pw = Get_Pwnam_alloc(mem_ctx, username);
	}

	/* one last check for a valid passwd struct */

	if ( pw )
		fstrcpy( save_username, pw->pw_name );

	return pw;
}

/***************************************************************************
 Make a server_info struct from the info3 returned by a domain logon 
***************************************************************************/

NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx, 
				const char *sent_nt_username,
				const char *domain,
				struct auth_serversupplied_info **server_info,
				struct netr_SamInfo3 *info3)
{
	static const char zeros[16] = {0, };

	NTSTATUS nt_status = NT_STATUS_OK;
	char *found_username = NULL;
	const char *nt_domain;
	const char *nt_username;
	struct samu *sam_account = NULL;
	DOM_SID user_sid;
	DOM_SID group_sid;
	bool username_was_mapped;

	uid_t uid = (uid_t)-1;
	gid_t gid = (gid_t)-1;

	struct auth_serversupplied_info *result;

	/* 
	   Here is where we should check the list of
	   trusted domains, and verify that the SID 
	   matches.
	*/

	if (!sid_compose(&user_sid, info3->base.domain_sid, info3->base.rid)) {
		return NT_STATUS_INVALID_PARAMETER;
	}

	if (!sid_compose(&group_sid, info3->base.domain_sid,
			 info3->base.primary_gid)) {
		return NT_STATUS_INVALID_PARAMETER;
	}

	nt_username = talloc_strdup(mem_ctx, info3->base.account_name.string);
	if (!nt_username) {
		/* If the server didn't give us one, just use the one we sent
		 * them */
		nt_username = sent_nt_username;
	}

	nt_domain = talloc_strdup(mem_ctx, info3->base.domain.string);
	if (!nt_domain) {
		/* If the server didn't give us one, just use the one we sent
		 * them */
		nt_domain = domain;
	}

	/* try to fill the SAM account..  If getpwnam() fails, then try the 
	   add user script (2.2.x behavior).

	   We use the _unmapped_ username here in an attempt to provide
	   consistent username mapping behavior between kerberos and NTLM[SSP]
	   authentication in domain mode security.  I.E. Username mapping
	   should be applied to the fully qualified username
	   (e.g. DOMAIN\user) and not just the login name.  Yes this means we
	   called map_username() unnecessarily in make_user_info_map() but
	   that is how the current code is designed.  Making the change here
	   is the least disruptive place.  -- jerry */

	if ( !(sam_account = samu_new( NULL )) ) {
		return NT_STATUS_NO_MEMORY;
	}

	/* this call will try to create the user if necessary */

	nt_status = fill_sam_account(mem_ctx, nt_domain, sent_nt_username,
				     &found_username, &uid, &gid, sam_account,
				     &username_was_mapped);


	/* if we still don't have a valid unix account check for 
	  'map to guest = bad uid' */

	if (!NT_STATUS_IS_OK(nt_status)) {
		TALLOC_FREE( sam_account );
		if ( lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_UID ) {
			make_server_info_guest(NULL, server_info);
			return NT_STATUS_OK;
		}
		return nt_status;
	}

	if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
		TALLOC_FREE(sam_account);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
		TALLOC_FREE(sam_account);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
		TALLOC_FREE(sam_account);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
		TALLOC_FREE(sam_account);
		return NT_STATUS_UNSUCCESSFUL;
	}

	if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
		TALLOC_FREE(sam_account);
		return NT_STATUS_UNSUCCESSFUL;
	}

	if (!pdb_set_fullname(sam_account,
			      info3->base.full_name.string,
			      PDB_CHANGED)) {
		TALLOC_FREE(sam_account);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_logon_script(sam_account,
				  info3->base.logon_script.string,
				  PDB_CHANGED)) {
		TALLOC_FREE(sam_account);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_profile_path(sam_account,
				  info3->base.profile_path.string,
				  PDB_CHANGED)) {
		TALLOC_FREE(sam_account);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_homedir(sam_account,
			     info3->base.home_directory.string,
			     PDB_CHANGED)) {
		TALLOC_FREE(sam_account);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_dir_drive(sam_account,
			       info3->base.home_drive.string,
			       PDB_CHANGED)) {
		TALLOC_FREE(sam_account);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_acct_ctrl(sam_account, info3->base.acct_flags, PDB_CHANGED)) {
		TALLOC_FREE(sam_account);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_pass_last_set_time(
		    sam_account,
		    nt_time_to_unix(info3->base.last_password_change),
		    PDB_CHANGED)) {
		TALLOC_FREE(sam_account);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_pass_can_change_time(
		    sam_account,
		    nt_time_to_unix(info3->base.allow_password_change),
		    PDB_CHANGED)) {
		TALLOC_FREE(sam_account);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_pass_must_change_time(
		    sam_account,
		    nt_time_to_unix(info3->base.force_password_change),
		    PDB_CHANGED)) {
		TALLOC_FREE(sam_account);
		return NT_STATUS_NO_MEMORY;
	}

	result = make_server_info(NULL);
	if (result == NULL) {
		DEBUG(4, ("make_server_info failed!\n"));
		TALLOC_FREE(sam_account);
		return NT_STATUS_NO_MEMORY;
	}

	/* save this here to _net_sam_logon() doesn't fail (it assumes a 
	   valid struct samu) */

	result->sam_account = sam_account;
	result->unix_name = talloc_strdup(result, found_username);

	result->sanitized_username = sanitize_username(result,
						       result->unix_name);
	if (result->sanitized_username == NULL) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	/* Fill in the unix info we found on the way */

	result->utok.uid = uid;
	result->utok.gid = gid;

	/* Create a 'combined' list of all SIDs we might want in the SD */

	result->num_sids = 0;
	result->sids = NULL;

	nt_status = sid_array_from_info3(result, info3,
					 &result->sids,
					 &result->num_sids,
					 false, false);
	if (!NT_STATUS_IS_OK(nt_status)) {
		TALLOC_FREE(result);
		return nt_status;
	}

	/* Ensure the primary group sid is at position 0. */
	sort_sid_array_for_smbd(result, &group_sid);

	result->login_server = talloc_strdup(result,
					     info3->base.logon_server.string);

	/* ensure we are never given NULL session keys */

	if (memcmp(info3->base.key.key, zeros, sizeof(zeros)) == 0) {
		result->user_session_key = data_blob_null;
	} else {
		result->user_session_key = data_blob_talloc(
			result, info3->base.key.key,
			sizeof(info3->base.key.key));
	}

	if (memcmp(info3->base.LMSessKey.key, zeros, 8) == 0) {
		result->lm_session_key = data_blob_null;
	} else {
		result->lm_session_key = data_blob_talloc(
			result, info3->base.LMSessKey.key,
			sizeof(info3->base.LMSessKey.key));
	}

	result->nss_token |= username_was_mapped;

	*server_info = result;

	return NT_STATUS_OK;
}

/*****************************************************************************
 Make a server_info struct from the wbcAuthUserInfo returned by a domain logon
******************************************************************************/

NTSTATUS make_server_info_wbcAuthUserInfo(TALLOC_CTX *mem_ctx,
					  const char *sent_nt_username,
					  const char *domain,
					  const struct wbcAuthUserInfo *info,
					  struct auth_serversupplied_info **server_info)
{
	static const char zeros[16] = {0, };

	NTSTATUS nt_status = NT_STATUS_OK;
	char *found_username = NULL;
	const char *nt_domain;
	const char *nt_username;
	struct samu *sam_account = NULL;
	DOM_SID user_sid;
	DOM_SID group_sid;
	bool username_was_mapped;
	uint32_t i;

	uid_t uid = (uid_t)-1;
	gid_t gid = (gid_t)-1;

	struct auth_serversupplied_info *result;

	result = make_server_info(NULL);
	if (result == NULL) {
		DEBUG(4, ("make_server_info failed!\n"));
		return NT_STATUS_NO_MEMORY;
	}

	/*
	   Here is where we should check the list of
	   trusted domains, and verify that the SID
	   matches.
	*/

	memcpy(&user_sid, &info->sids[0].sid, sizeof(user_sid));
	memcpy(&group_sid, &info->sids[1].sid, sizeof(group_sid));

	if (info->account_name) {
		nt_username = talloc_strdup(result, info->account_name);
	} else {
		/* If the server didn't give us one, just use the one we sent
		 * them */
		nt_username = talloc_strdup(result, sent_nt_username);
	}
	if (!nt_username) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	if (info->domain_name) {
		nt_domain = talloc_strdup(result, info->domain_name);
	} else {
		/* If the server didn't give us one, just use the one we sent
		 * them */
		nt_domain = talloc_strdup(result, domain);
	}
	if (!nt_domain) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	/* try to fill the SAM account..  If getpwnam() fails, then try the
	   add user script (2.2.x behavior).

	   We use the _unmapped_ username here in an attempt to provide
	   consistent username mapping behavior between kerberos and NTLM[SSP]
	   authentication in domain mode security.  I.E. Username mapping
	   should be applied to the fully qualified username
	   (e.g. DOMAIN\user) and not just the login name.  Yes this means we
	   called map_username() unnecessarily in make_user_info_map() but
	   that is how the current code is designed.  Making the change here
	   is the least disruptive place.  -- jerry */

	if ( !(sam_account = samu_new( result )) ) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	/* this call will try to create the user if necessary */

	nt_status = fill_sam_account(result, nt_domain, sent_nt_username,
				     &found_username, &uid, &gid, sam_account,
				     &username_was_mapped);

	/* if we still don't have a valid unix account check for
	  'map to guest = bad uid' */

	if (!NT_STATUS_IS_OK(nt_status)) {
		TALLOC_FREE( result );
		if ( lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_UID ) {
			make_server_info_guest(NULL, server_info);
			return NT_STATUS_OK;
		}
		return nt_status;
	}

	if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
		TALLOC_FREE(result);
		return NT_STATUS_UNSUCCESSFUL;
	}

	if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
		TALLOC_FREE(result);
		return NT_STATUS_UNSUCCESSFUL;
	}

	if (!pdb_set_fullname(sam_account, info->full_name, PDB_CHANGED)) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_logon_script(sam_account, info->logon_script, PDB_CHANGED)) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_profile_path(sam_account, info->profile_path, PDB_CHANGED)) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_homedir(sam_account, info->home_directory, PDB_CHANGED)) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_dir_drive(sam_account, info->home_drive, PDB_CHANGED)) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_acct_ctrl(sam_account, info->acct_flags, PDB_CHANGED)) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_pass_last_set_time(
		    sam_account,
		    nt_time_to_unix(info->pass_last_set_time),
		    PDB_CHANGED)) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_pass_can_change_time(
		    sam_account,
		    nt_time_to_unix(info->pass_can_change_time),
		    PDB_CHANGED)) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	if (!pdb_set_pass_must_change_time(
		    sam_account,
		    nt_time_to_unix(info->pass_must_change_time),
		    PDB_CHANGED)) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	/* save this here to _net_sam_logon() doesn't fail (it assumes a
	   valid struct samu) */

	result->sam_account = sam_account;
	result->unix_name = talloc_strdup(result, found_username);

	result->sanitized_username = sanitize_username(result,
						       result->unix_name);
	result->login_server = talloc_strdup(result, info->logon_server);

	if ((result->unix_name == NULL)
	    || (result->sanitized_username == NULL)
	    || (result->login_server == NULL)) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	/* Fill in the unix info we found on the way */

	result->utok.uid = uid;
	result->utok.gid = gid;

	/* Create a 'combined' list of all SIDs we might want in the SD */

	result->num_sids = info->num_sids - 2;
	result->sids = talloc_array(result, DOM_SID, result->num_sids);
	if (result->sids == NULL) {
		TALLOC_FREE(result);
		return NT_STATUS_NO_MEMORY;
	}

	for (i=0; i < result->num_sids; i++) {
		memcpy(&result->sids[i], &info->sids[i+2].sid, sizeof(result->sids[i]));
	}

	/* Ensure the primary group sid is at position 0. */
	sort_sid_array_for_smbd(result, &group_sid);

	/* ensure we are never given NULL session keys */

	if (memcmp(info->user_session_key, zeros, sizeof(zeros)) == 0) {
		result->user_session_key = data_blob_null;
	} else {
		result->user_session_key = data_blob_talloc(
			result, info->user_session_key,
			sizeof(info->user_session_key));
	}

	if (memcmp(info->lm_session_key, zeros, 8) == 0) {
		result->lm_session_key = data_blob_null;
	} else {
		result->lm_session_key = data_blob_talloc(
			result, info->lm_session_key,
			sizeof(info->lm_session_key));
	}

	result->nss_token |= username_was_mapped;

	*server_info = result;

	return NT_STATUS_OK;
}

/***************************************************************************
 Free a user_info struct
***************************************************************************/

void free_user_info(struct auth_usersupplied_info **user_info)
{
	DEBUG(5,("attempting to free (and zero) a user_info structure\n"));
	if (*user_info != NULL) {
		if ((*user_info)->smb_name) {
			DEBUG(10,("structure was created for %s\n",
				  (*user_info)->smb_name));
		}
		SAFE_FREE((*user_info)->smb_name);
		SAFE_FREE((*user_info)->internal_username);
		SAFE_FREE((*user_info)->client_domain);
		SAFE_FREE((*user_info)->domain);
		SAFE_FREE((*user_info)->wksta_name);
		data_blob_free(&(*user_info)->lm_resp);
		data_blob_free(&(*user_info)->nt_resp);
		data_blob_clear_free(&(*user_info)->lm_interactive_pwd);
		data_blob_clear_free(&(*user_info)->nt_interactive_pwd);
		data_blob_clear_free(&(*user_info)->plaintext_password);
		ZERO_STRUCT(**user_info);
	}
	SAFE_FREE(*user_info);
}

/***************************************************************************
 Make an auth_methods struct
***************************************************************************/

bool make_auth_methods(struct auth_context *auth_context, auth_methods **auth_method) 
{
	if (!auth_context) {
		smb_panic("no auth_context supplied to "
			  "make_auth_methods()!\n");
	}

	if (!auth_method) {
		smb_panic("make_auth_methods: pointer to auth_method pointer "
			  "is NULL!\n");
	}

	*auth_method = TALLOC_P(auth_context->mem_ctx, auth_methods);
	if (!*auth_method) {
		DEBUG(0,("make_auth_method: malloc failed!\n"));
		return False;
	}
	ZERO_STRUCTP(*auth_method);

	return True;
}

/**
 * Verify whether or not given domain is trusted.
 *
 * @param domain_name name of the domain to be verified
 * @return true if domain is one of the trusted ones or
 *         false if otherwise
 **/

bool is_trusted_domain(const char* dom_name)
{
	DOM_SID trustdom_sid;
	bool ret;

	/* no trusted domains for a standalone server */

	if ( lp_server_role() == ROLE_STANDALONE )
		return False;

	if (dom_name == NULL || dom_name[0] == '\0') {
		return false;
	}

	if (strequal(dom_name, get_global_sam_name())) {
		return false;
	}

	/* if we are a DC, then check for a direct trust relationships */

	if ( IS_DC ) {
		become_root();
		DEBUG (5,("is_trusted_domain: Checking for domain trust with "
			  "[%s]\n", dom_name ));
		ret = pdb_get_trusteddom_pw(dom_name, NULL, NULL, NULL);
		unbecome_root();
		if (ret)
			return True;
	}
	else {
		wbcErr result;

		/* If winbind is around, ask it */

		result = wb_is_trusted_domain(dom_name);

		if (result == WBC_ERR_SUCCESS) {
			return True;
		}

		if (result == WBC_ERR_DOMAIN_NOT_FOUND) {
			/* winbind could not find the domain */
			return False;
		}

		/* The only other possible result is that winbind is not up
		   and running. We need to update the trustdom_cache
		   ourselves */

		update_trustdom_cache();
	}

	/* now the trustdom cache should be available a DC could still
	 * have a transitive trust so fall back to the cache of trusted
	 * domains (like a domain member would use  */

	if ( trustdom_cache_fetch(dom_name, &trustdom_sid) ) {
		return True;
	}

	return False;
}