summaryrefslogtreecommitdiff
path: root/source3/rpc_server/srv_pipe.c
blob: 812a720d9059f2408d3af9ca7de6ed4a5966cd73 (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
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
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
/* 
 *  Unix SMB/CIFS implementation.
 *  RPC Pipe client / server routines
 *  Almost completely rewritten by (C) Jeremy Allison 2005.
 *  
 *  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 2 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, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*  this module apparently provides an implementation of DCE/RPC over a
 *  named pipe (IPC$ connection using SMBtrans).  details of DCE/RPC
 *  documentation are available (in on-line form) from the X-Open group.
 *
 *  this module should provide a level of abstraction between SMB
 *  and DCE/RPC, while minimising the amount of mallocs, unnecessary
 *  data copies, and network traffic.
 *
 */

#include "includes.h"

extern struct pipe_id_info pipe_names[];
extern struct current_user current_user;

#undef DBGC_CLASS
#define DBGC_CLASS DBGC_RPC_SRV

static void free_pipe_ntlmssp_auth_data(struct pipe_auth_data *auth)
{
	AUTH_NTLMSSP_STATE *a = auth->a_u.auth_ntlmssp_state;

	if (a) {
		auth_ntlmssp_end(&a);
	}
	auth->a_u.auth_ntlmssp_state = NULL;
}

/*******************************************************************
 Generate the next PDU to be returned from the data in p->rdata. 
 Handle NTLMSSP.
 ********************************************************************/

static BOOL create_next_pdu_ntlmssp(pipes_struct *p)
{
	RPC_HDR_RESP hdr_resp;
	uint32 ss_padding_len = 0;
	uint32 data_space_available;
	uint32 data_len_left;
	uint32 data_len;
	prs_struct outgoing_pdu;
	NTSTATUS status;
	DATA_BLOB auth_blob;
	RPC_HDR_AUTH auth_info;
	uint8 auth_type, auth_level;
	AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;

	/*
	 * If we're in the fault state, keep returning fault PDU's until
	 * the pipe gets closed. JRA.
	 */

	if(p->fault_state) {
		setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
		return True;
	}

	memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));

	/* Change the incoming request header to a response. */
	p->hdr.pkt_type = RPC_RESPONSE;

	/* Set up rpc header flags. */
	if (p->out_data.data_sent_length == 0) {
		p->hdr.flags = RPC_FLG_FIRST;
	} else {
		p->hdr.flags = 0;
	}

	/*
	 * Work out how much we can fit in a single PDU.
	 */

	data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;

	/*
	 * Ensure there really is data left to send.
	 */

	if(!data_len_left) {
		DEBUG(0,("create_next_pdu_ntlmssp: no data left to send !\n"));
		return False;
	}

	data_space_available = sizeof(p->out_data.current_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN -
					RPC_HDR_AUTH_LEN - NTLMSSP_SIG_SIZE;

	/*
	 * The amount we send is the minimum of the available
	 * space and the amount left to send.
	 */

	data_len = MIN(data_len_left, data_space_available);

	/*
	 * Set up the alloc hint. This should be the data left to
	 * send.
	 */

	hdr_resp.alloc_hint = data_len_left;

	/*
	 * Work out if this PDU will be the last.
	 */

	if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
		p->hdr.flags |= RPC_FLG_LAST;
		if (data_len_left % 8) {
			ss_padding_len = 8 - (data_len_left % 8);
			DEBUG(10,("create_next_pdu_ntlmssp: adding sign/seal padding of %u\n",
				ss_padding_len ));
		}
	}

	/*
	 * Set up the header lengths.
	 */

	p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN +
			data_len + ss_padding_len +
			RPC_HDR_AUTH_LEN + NTLMSSP_SIG_SIZE;
	p->hdr.auth_len = NTLMSSP_SIG_SIZE;


	/*
	 * Init the parse struct to point at the outgoing
	 * data.
	 */

	prs_init( &outgoing_pdu, 0, p->mem_ctx, MARSHALL);
	prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);

	/* Store the header in the data stream. */
	if(!smb_io_rpc_hdr("hdr", &p->hdr, &outgoing_pdu, 0)) {
		DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR.\n"));
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
		DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_RESP.\n"));
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	/* Copy the data into the PDU. */

	if(!prs_append_some_prs_data(&outgoing_pdu, &p->out_data.rdata, p->out_data.data_sent_length, data_len)) {
		DEBUG(0,("create_next_pdu_ntlmssp: failed to copy %u bytes of data.\n", (unsigned int)data_len));
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	/* Copy the sign/seal padding data. */
	if (ss_padding_len) {
		char pad[8];

		memset(pad, '\0', 8);
		if (!prs_copy_data_in(&outgoing_pdu, pad, ss_padding_len)) {
			DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes of pad data.\n",
					(unsigned int)ss_padding_len));
			prs_mem_free(&outgoing_pdu);
			return False;
		}
	}


	/* Now write out the auth header and null blob. */
	if (p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) {
		auth_type = RPC_NTLMSSP_AUTH_TYPE;
	} else {
		auth_type = RPC_SPNEGO_AUTH_TYPE;
	}
	if (p->auth.auth_level == PIPE_AUTH_LEVEL_PRIVACY) {
		auth_level = RPC_AUTH_LEVEL_PRIVACY;
	} else {
		auth_level = RPC_AUTH_LEVEL_INTEGRITY;
	}

	init_rpc_hdr_auth(&auth_info, auth_type, auth_level, ss_padding_len, 1 /* context id. */);
	if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, &outgoing_pdu, 0)) {
		DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_AUTH.\n"));
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	/* Generate the sign blob. */

	switch (p->auth.auth_level) {
		case PIPE_AUTH_LEVEL_PRIVACY:
			/* Data portion is encrypted. */
			status = ntlmssp_seal_packet(a->ntlmssp_state,
							(unsigned char *)prs_data_p(&outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
							data_len + ss_padding_len,
							(unsigned char *)prs_data_p(&outgoing_pdu),
							(size_t)prs_offset(&outgoing_pdu),
							&auth_blob);
			if (!NT_STATUS_IS_OK(status)) {
				data_blob_free(&auth_blob);
				prs_mem_free(&outgoing_pdu);
				return False;
			}
			break;
		case PIPE_AUTH_LEVEL_INTEGRITY:
			/* Data is signed. */
			status = ntlmssp_sign_packet(a->ntlmssp_state,
							(unsigned char *)prs_data_p(&outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
							data_len + ss_padding_len,
							(unsigned char *)prs_data_p(&outgoing_pdu),
							(size_t)prs_offset(&outgoing_pdu),
							&auth_blob);
			if (!NT_STATUS_IS_OK(status)) {
				data_blob_free(&auth_blob);
				prs_mem_free(&outgoing_pdu);
				return False;
			}
			break;
		default:
			prs_mem_free(&outgoing_pdu);
			return False;
	}

	/* Append the auth blob. */
	if (!prs_copy_data_in(&outgoing_pdu, (char *)auth_blob.data, NTLMSSP_SIG_SIZE)) {
		DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes auth blob.\n",
				(unsigned int)NTLMSSP_SIG_SIZE));
		data_blob_free(&auth_blob);
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	data_blob_free(&auth_blob);

	/*
	 * Setup the counts for this PDU.
	 */

	p->out_data.data_sent_length += data_len;
	p->out_data.current_pdu_len = p->hdr.frag_len;
	p->out_data.current_pdu_sent = 0;

	prs_mem_free(&outgoing_pdu);
	return True;
}

/*******************************************************************
 Generate the next PDU to be returned from the data in p->rdata. 
 Return an schannel authenticated fragment.
 ********************************************************************/

static BOOL create_next_pdu_schannel(pipes_struct *p)
{
	RPC_HDR_RESP hdr_resp;
	uint32 ss_padding_len = 0;
	uint32 data_len;
	uint32 data_space_available;
	uint32 data_len_left;
	prs_struct outgoing_pdu;
	uint32 data_pos;

	/*
	 * If we're in the fault state, keep returning fault PDU's until
	 * the pipe gets closed. JRA.
	 */

	if(p->fault_state) {
		setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
		return True;
	}

	memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));

	/* Change the incoming request header to a response. */
	p->hdr.pkt_type = RPC_RESPONSE;

	/* Set up rpc header flags. */
	if (p->out_data.data_sent_length == 0) {
		p->hdr.flags = RPC_FLG_FIRST;
	} else {
		p->hdr.flags = 0;
	}

	/*
	 * Work out how much we can fit in a single PDU.
	 */

	data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;

	/*
	 * Ensure there really is data left to send.
	 */

	if(!data_len_left) {
		DEBUG(0,("create_next_pdu_schannel: no data left to send !\n"));
		return False;
	}

	data_space_available = sizeof(p->out_data.current_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN -
					RPC_HDR_AUTH_LEN - RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;

	/*
	 * The amount we send is the minimum of the available
	 * space and the amount left to send.
	 */

	data_len = MIN(data_len_left, data_space_available);

	/*
	 * Set up the alloc hint. This should be the data left to
	 * send.
	 */

	hdr_resp.alloc_hint = data_len_left;

	/*
	 * Work out if this PDU will be the last.
	 */

	if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
		p->hdr.flags |= RPC_FLG_LAST;
		if (data_len_left % 8) {
			ss_padding_len = 8 - (data_len_left % 8);
			DEBUG(10,("create_next_pdu_schannel: adding sign/seal padding of %u\n",
				ss_padding_len ));
		}
	}

	p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len + ss_padding_len +
				RPC_HDR_AUTH_LEN + RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
	p->hdr.auth_len = RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;

	/*
	 * Init the parse struct to point at the outgoing
	 * data.
	 */

	prs_init( &outgoing_pdu, 0, p->mem_ctx, MARSHALL);
	prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);

	/* Store the header in the data stream. */
	if(!smb_io_rpc_hdr("hdr", &p->hdr, &outgoing_pdu, 0)) {
		DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR.\n"));
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
		DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_RESP.\n"));
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	/* Store the current offset. */
	data_pos = prs_offset(&outgoing_pdu);

	/* Copy the data into the PDU. */

	if(!prs_append_some_prs_data(&outgoing_pdu, &p->out_data.rdata, p->out_data.data_sent_length, data_len)) {
		DEBUG(0,("create_next_pdu_schannel: failed to copy %u bytes of data.\n", (unsigned int)data_len));
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	/* Copy the sign/seal padding data. */
	if (ss_padding_len) {
		char pad[8];
		memset(pad, '\0', 8);
		if (!prs_copy_data_in(&outgoing_pdu, pad, ss_padding_len)) {
			DEBUG(0,("create_next_pdu_schannel: failed to add %u bytes of pad data.\n", (unsigned int)ss_padding_len));
			prs_mem_free(&outgoing_pdu);
			return False;
		}
	}

	{
		/*
		 * Schannel processing.
		 */
		char *data;
		RPC_HDR_AUTH auth_info;
		RPC_AUTH_SCHANNEL_CHK verf;

		data = prs_data_p(&outgoing_pdu) + data_pos;
		/* Check it's the type of reply we were expecting to decode */

		init_rpc_hdr_auth(&auth_info,
				RPC_SCHANNEL_AUTH_TYPE,
				p->auth.auth_level == PIPE_AUTH_LEVEL_PRIVACY ?
					RPC_AUTH_LEVEL_PRIVACY : RPC_AUTH_LEVEL_INTEGRITY,
				ss_padding_len, 1);

		if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, &outgoing_pdu, 0)) {
			DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_AUTH.\n"));
			prs_mem_free(&outgoing_pdu);
			return False;
		}

		schannel_encode(p->auth.a_u.schannel_auth, 
			      p->auth.auth_level,
			      SENDER_IS_ACCEPTOR,
			      &verf, data, data_len + ss_padding_len);

		if (!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN, 
				&verf, &outgoing_pdu, 0)) {
			prs_mem_free(&outgoing_pdu);
			return False;
		}

		p->auth.a_u.schannel_auth->seq_num++;
	}

	/*
	 * Setup the counts for this PDU.
	 */

	p->out_data.data_sent_length += data_len;
	p->out_data.current_pdu_len = p->hdr.frag_len;
	p->out_data.current_pdu_sent = 0;

	prs_mem_free(&outgoing_pdu);
	return True;
}

/*******************************************************************
 Generate the next PDU to be returned from the data in p->rdata. 
 No authentication done.
********************************************************************/

static BOOL create_next_pdu_noauth(pipes_struct *p)
{
	RPC_HDR_RESP hdr_resp;
	uint32 data_len;
	uint32 data_space_available;
	uint32 data_len_left;
	prs_struct outgoing_pdu;

	/*
	 * If we're in the fault state, keep returning fault PDU's until
	 * the pipe gets closed. JRA.
	 */

	if(p->fault_state) {
		setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
		return True;
	}

	memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));

	/* Change the incoming request header to a response. */
	p->hdr.pkt_type = RPC_RESPONSE;

	/* Set up rpc header flags. */
	if (p->out_data.data_sent_length == 0) {
		p->hdr.flags = RPC_FLG_FIRST;
	} else {
		p->hdr.flags = 0;
	}

	/*
	 * Work out how much we can fit in a single PDU.
	 */

	data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;

	/*
	 * Ensure there really is data left to send.
	 */

	if(!data_len_left) {
		DEBUG(0,("create_next_pdu_noath: no data left to send !\n"));
		return False;
	}

	data_space_available = sizeof(p->out_data.current_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;

	/*
	 * The amount we send is the minimum of the available
	 * space and the amount left to send.
	 */

	data_len = MIN(data_len_left, data_space_available);

	/*
	 * Set up the alloc hint. This should be the data left to
	 * send.
	 */

	hdr_resp.alloc_hint = data_len_left;

	/*
	 * Work out if this PDU will be the last.
	 */

	if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
		p->hdr.flags |= RPC_FLG_LAST;
	}

	/*
	 * Set up the header lengths.
	 */

	p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len;
	p->hdr.auth_len = 0;

	/*
	 * Init the parse struct to point at the outgoing
	 * data.
	 */

	prs_init( &outgoing_pdu, 0, p->mem_ctx, MARSHALL);
	prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);

	/* Store the header in the data stream. */
	if(!smb_io_rpc_hdr("hdr", &p->hdr, &outgoing_pdu, 0)) {
		DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR.\n"));
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
		DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR_RESP.\n"));
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	/* Copy the data into the PDU. */

	if(!prs_append_some_prs_data(&outgoing_pdu, &p->out_data.rdata, p->out_data.data_sent_length, data_len)) {
		DEBUG(0,("create_next_pdu_noauth: failed to copy %u bytes of data.\n", (unsigned int)data_len));
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	/*
	 * Setup the counts for this PDU.
	 */

	p->out_data.data_sent_length += data_len;
	p->out_data.current_pdu_len = p->hdr.frag_len;
	p->out_data.current_pdu_sent = 0;

	prs_mem_free(&outgoing_pdu);
	return True;
}

/*******************************************************************
 Generate the next PDU to be returned from the data in p->rdata. 
********************************************************************/

BOOL create_next_pdu(pipes_struct *p)
{
	switch(p->auth.auth_level) {
		case PIPE_AUTH_LEVEL_NONE:
		case PIPE_AUTH_LEVEL_CONNECT:
			/* This is incorrect for auth level connect. Fixme. JRA */
			return create_next_pdu_noauth(p);
		
		default:
			switch(p->auth.auth_type) {
				case PIPE_AUTH_TYPE_NTLMSSP:
				case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
					return create_next_pdu_ntlmssp(p);
				case PIPE_AUTH_TYPE_SCHANNEL:
					return create_next_pdu_schannel(p);
				default:
					break;
			}
	}

	DEBUG(0,("create_next_pdu: invalid internal auth level %u / type %u",
			(unsigned int)p->auth.auth_level,
			(unsigned int)p->auth.auth_type));
	return False;
}

/*******************************************************************
 Process an NTLMSSP authentication response.
 If this function succeeds, the user has been authenticated
 and their domain, name and calling workstation stored in
 the pipe struct.
*******************************************************************/

static BOOL pipe_ntlmssp_verify_final(pipes_struct *p, DATA_BLOB *p_resp_blob)
{
	DATA_BLOB reply;
	NTSTATUS status;
	AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;

	DEBUG(5,("pipe_ntlmssp_verify_final: pipe %s checking user details\n", p->name));

	ZERO_STRUCT(reply);

	memset(p->user_name, '\0', sizeof(p->user_name));
	memset(p->pipe_user_name, '\0', sizeof(p->pipe_user_name));
	memset(p->domain, '\0', sizeof(p->domain));
	memset(p->wks, '\0', sizeof(p->wks));

	/* Set up for non-authenticated user. */
	TALLOC_FREE(p->pipe_user.nt_user_token);
	p->pipe_user.ut.ngroups = 0;
	SAFE_FREE( p->pipe_user.ut.groups);

	/* this has to be done as root in order to verify the password */
	become_root();
	status = auth_ntlmssp_update(a, *p_resp_blob, &reply);
	unbecome_root();

	/* Don't generate a reply. */
	data_blob_free(&reply);

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

	/* Finally - if the pipe negotiated integrity (sign) or privacy (seal)
	   ensure the underlying NTLMSSP flags are also set. If not we should
	   refuse the bind. */

	if (p->auth.auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
		if (!(a->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
			DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet integrity requested "
				"but client declined signing.\n",
					p->name ));
			return False;
		}
	}
	if (p->auth.auth_level == PIPE_AUTH_LEVEL_PRIVACY) {
		if (!(a->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL)) {
			DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet privacy requested "
				"but client declined sealing.\n",
					p->name ));
			return False;
		}
	}
	
	fstrcpy(p->user_name, a->ntlmssp_state->user);
	fstrcpy(p->pipe_user_name, a->server_info->unix_name);
	fstrcpy(p->domain, a->ntlmssp_state->domain);
	fstrcpy(p->wks, a->ntlmssp_state->workstation);

	DEBUG(5,("pipe_ntlmssp_verify_final: OK: user: %s domain: %s workstation: %s\n",
		p->user_name, p->domain, p->wks));

	/*
	 * Store the UNIX credential data (uid/gid pair) in the pipe structure.
	 */

	p->pipe_user.ut.uid = a->server_info->uid;
	p->pipe_user.ut.gid = a->server_info->gid;
	
	/*
	 * Copy the session key from the ntlmssp state.
	 */

	data_blob_free(&p->session_key);
	p->session_key = data_blob(a->ntlmssp_state->session_key.data, a->ntlmssp_state->session_key.length);
	if (!p->session_key.data) {
		return False;
	}

	p->pipe_user.ut.ngroups = a->server_info->n_groups;
	if (p->pipe_user.ut.ngroups) {
		if (!(p->pipe_user.ut.groups = memdup(a->server_info->groups,
						sizeof(gid_t) * p->pipe_user.ut.ngroups))) {
			DEBUG(0,("pipe_ntlmssp_verify_final: failed to memdup group list to p->pipe_user.groups\n"));
			data_blob_free(&p->session_key);
			return False;
		}
	}

	if (a->server_info->ptok) {
		p->pipe_user.nt_user_token =
			dup_nt_token(NULL, a->server_info->ptok);
		if (!p->pipe_user.nt_user_token) {
			DEBUG(1,("pipe_ntlmssp_verify_final: dup_nt_token failed.\n"));
			data_blob_free(&p->session_key);
			SAFE_FREE(p->pipe_user.ut.groups);
			return False;
		}

	} else {
		DEBUG(1,("pipe_ntlmssp_verify_final: Error: Authmodule failed to provide nt_user_token\n"));
		data_blob_free(&p->session_key);
		SAFE_FREE(p->pipe_user.ut.groups);
		return False;
	}

	return True;
}

/*******************************************************************
 The switch table for the pipe names and the functions to handle them.
*******************************************************************/

struct rpc_table {
	struct {
		const char *clnt;
		const char *srv;
	} pipe;
	struct api_struct *cmds;
	int n_cmds;
};

static struct rpc_table *rpc_lookup;
static int rpc_lookup_size;

/*******************************************************************
 This is the "stage3" NTLMSSP response after a bind request and reply.
*******************************************************************/

BOOL api_pipe_bind_auth3(pipes_struct *p, prs_struct *rpc_in_p)
{
	RPC_HDR_AUTH auth_info;
	uint32 pad;
	DATA_BLOB blob;

	ZERO_STRUCT(blob);

	DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__));

	if (p->hdr.auth_len == 0) {
		DEBUG(0,("api_pipe_bind_auth3: No auth field sent !\n"));
		goto err;
	}

	/* 4 bytes padding. */
	if (!prs_uint32("pad", rpc_in_p, 0, &pad)) {
		DEBUG(0,("api_pipe_bind_auth3: unmarshall of 4 byte pad failed.\n"));
		goto err;
	}

	/*
	 * Decode the authentication verifier response.
	 */

	if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
		DEBUG(0,("api_pipe_bind_auth3: unmarshall of RPC_HDR_AUTH failed.\n"));
		goto err;
	}

	if (auth_info.auth_type != RPC_NTLMSSP_AUTH_TYPE) {
		DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
			(unsigned int)auth_info.auth_type ));
		return False;
	}

	blob = data_blob(NULL,p->hdr.auth_len);

	if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
		DEBUG(0,("api_pipe_bind_auth3: Failed to pull %u bytes - the response blob.\n",
			(unsigned int)p->hdr.auth_len ));
		goto err;
	}

	/*
	 * The following call actually checks the challenge/response data.
	 * for correctness against the given DOMAIN\user name.
	 */
	
	if (!pipe_ntlmssp_verify_final(p, &blob)) {
		goto err;
	}

	data_blob_free(&blob);

	p->pipe_bound = True;

	return True;

 err:

	data_blob_free(&blob);
	free_pipe_ntlmssp_auth_data(&p->auth);
	p->auth.a_u.auth_ntlmssp_state = NULL;

	return False;
}

/*******************************************************************
 Marshall a bind_nak pdu.
*******************************************************************/

static BOOL setup_bind_nak(pipes_struct *p)
{
	prs_struct outgoing_rpc;
	RPC_HDR nak_hdr;
	uint16 zero = 0;

	/* Free any memory in the current return data buffer. */
	prs_mem_free(&p->out_data.rdata);

	/*
	 * Marshall directly into the outgoing PDU space. We
	 * must do this as we need to set to the bind response
	 * header and are never sending more than one PDU here.
	 */

	prs_init( &outgoing_rpc, 0, p->mem_ctx, MARSHALL);
	prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);

	/*
	 * Initialize a bind_nak header.
	 */

	init_rpc_hdr(&nak_hdr, RPC_BINDNACK, RPC_FLG_FIRST | RPC_FLG_LAST,
		p->hdr.call_id, RPC_HEADER_LEN + sizeof(uint16), 0);

	/*
	 * Marshall the header into the outgoing PDU.
	 */

	if(!smb_io_rpc_hdr("", &nak_hdr, &outgoing_rpc, 0)) {
		DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
		prs_mem_free(&outgoing_rpc);
		return False;
	}

	/*
	 * Now add the reject reason.
	 */

	if(!prs_uint16("reject code", &outgoing_rpc, 0, &zero)) {
		prs_mem_free(&outgoing_rpc);
		return False;
	}

	p->out_data.data_sent_length = 0;
	p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
	p->out_data.current_pdu_sent = 0;

	if (p->auth.auth_data_free_func) {
		(*p->auth.auth_data_free_func)(&p->auth);
	}
	p->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
	p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
	p->pipe_bound = False;

	return True;
}

/*******************************************************************
 Marshall a fault pdu.
*******************************************************************/

BOOL setup_fault_pdu(pipes_struct *p, NTSTATUS status)
{
	prs_struct outgoing_pdu;
	RPC_HDR fault_hdr;
	RPC_HDR_RESP hdr_resp;
	RPC_HDR_FAULT fault_resp;

	/* Free any memory in the current return data buffer. */
	prs_mem_free(&p->out_data.rdata);

	/*
	 * Marshall directly into the outgoing PDU space. We
	 * must do this as we need to set to the bind response
	 * header and are never sending more than one PDU here.
	 */

	prs_init( &outgoing_pdu, 0, p->mem_ctx, MARSHALL);
	prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);

	/*
	 * Initialize a fault header.
	 */

	init_rpc_hdr(&fault_hdr, RPC_FAULT, RPC_FLG_FIRST | RPC_FLG_LAST | RPC_FLG_NOCALL,
            p->hdr.call_id, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_FAULT_LEN, 0);

	/*
	 * Initialize the HDR_RESP and FAULT parts of the PDU.
	 */

	memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));

	fault_resp.status = status;
	fault_resp.reserved = 0;

	/*
	 * Marshall the header into the outgoing PDU.
	 */

	if(!smb_io_rpc_hdr("", &fault_hdr, &outgoing_pdu, 0)) {
		DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
		DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	if(!smb_io_rpc_hdr_fault("fault", &fault_resp, &outgoing_pdu, 0)) {
		DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	p->out_data.data_sent_length = 0;
	p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
	p->out_data.current_pdu_sent = 0;

	prs_mem_free(&outgoing_pdu);
	return True;
}

#if 0
/*******************************************************************
 Marshall a cancel_ack pdu.
 We should probably check the auth-verifier here.
*******************************************************************/

BOOL setup_cancel_ack_reply(pipes_struct *p, prs_struct *rpc_in_p)
{
	prs_struct outgoing_pdu;
	RPC_HDR ack_reply_hdr;

	/* Free any memory in the current return data buffer. */
	prs_mem_free(&p->out_data.rdata);

	/*
	 * Marshall directly into the outgoing PDU space. We
	 * must do this as we need to set to the bind response
	 * header and are never sending more than one PDU here.
	 */

	prs_init( &outgoing_pdu, 0, p->mem_ctx, MARSHALL);
	prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);

	/*
	 * Initialize a cancel_ack header.
	 */

	init_rpc_hdr(&ack_reply_hdr, RPC_CANCEL_ACK, RPC_FLG_FIRST | RPC_FLG_LAST,
			p->hdr.call_id, RPC_HEADER_LEN, 0);

	/*
	 * Marshall the header into the outgoing PDU.
	 */

	if(!smb_io_rpc_hdr("", &ack_reply_hdr, &outgoing_pdu, 0)) {
		DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
		prs_mem_free(&outgoing_pdu);
		return False;
	}

	p->out_data.data_sent_length = 0;
	p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
	p->out_data.current_pdu_sent = 0;

	prs_mem_free(&outgoing_pdu);
	return True;
}
#endif

/*******************************************************************
 Ensure a bind request has the correct abstract & transfer interface.
 Used to reject unknown binds from Win2k.
*******************************************************************/

BOOL check_bind_req(struct pipes_struct *p, RPC_IFACE* abstract,
                    RPC_IFACE* transfer, uint32 context_id)
{
	char *pipe_name = p->name;
	int i=0;
	fstring pname;
	
	fstrcpy(pname,"\\PIPE\\");
	fstrcat(pname,pipe_name);

	DEBUG(3,("check_bind_req for %s\n", pname));

	/* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
		
	for ( i=0; pipe_names[i].client_pipe; i++ ) {
		DEBUG(10,("checking %s\n", pipe_names[i].client_pipe));
		if ( strequal(pipe_names[i].client_pipe, pname)
			&& (abstract->version == pipe_names[i].abstr_syntax.version) 
			&& (memcmp(&abstract->uuid, &pipe_names[i].abstr_syntax.uuid, sizeof(struct uuid)) == 0)
			&& (transfer->version == pipe_names[i].trans_syntax.version)
			&& (memcmp(&transfer->uuid, &pipe_names[i].trans_syntax.uuid, sizeof(struct uuid)) == 0) ) {
			struct api_struct 	*fns = NULL;
			int 			n_fns = 0;
			PIPE_RPC_FNS		*context_fns;
			
			if ( !(context_fns = SMB_MALLOC_P(PIPE_RPC_FNS)) ) {
				DEBUG(0,("check_bind_req: malloc() failed!\n"));
				return False;
			}
			
			/* save the RPC function table associated with this bind */
			
			get_pipe_fns(i, &fns, &n_fns);
			
			context_fns->cmds = fns;
			context_fns->n_cmds = n_fns;
			context_fns->context_id = context_id;
			
			/* add to the list of open contexts */
			
			DLIST_ADD( p->contexts, context_fns );
			
			break;
		}
	}

	if(pipe_names[i].client_pipe == NULL) {
		return False;
	}

	return True;
}

/*******************************************************************
 Register commands to an RPC pipe
*******************************************************************/

NTSTATUS rpc_pipe_register_commands(int version, const char *clnt, const char *srv, const struct api_struct *cmds, int size)
{
        struct rpc_table *rpc_entry;

	if (!clnt || !srv || !cmds) {
		return NT_STATUS_INVALID_PARAMETER;
	}

	if (version != SMB_RPC_INTERFACE_VERSION) {
		DEBUG(0,("Can't register rpc commands!\n"
			 "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
			 ", while this version of samba uses version %d!\n", 
			 version,SMB_RPC_INTERFACE_VERSION));
		return NT_STATUS_OBJECT_TYPE_MISMATCH;
	}

	/* TODO: 
	 *
	 * we still need to make sure that don't register the same commands twice!!!
	 * 
	 * --metze
	 */

        /* We use a temporary variable because this call can fail and 
           rpc_lookup will still be valid afterwards.  It could then succeed if
           called again later */
	rpc_lookup_size++;
        rpc_entry = SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(rpc_lookup, struct rpc_table, rpc_lookup_size);
        if (NULL == rpc_entry) {
                rpc_lookup_size--;
                DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
                return NT_STATUS_NO_MEMORY;
        } else {
                rpc_lookup = rpc_entry;
        }
        
        rpc_entry = rpc_lookup + (rpc_lookup_size - 1);
        ZERO_STRUCTP(rpc_entry);
        rpc_entry->pipe.clnt = SMB_STRDUP(clnt);
        rpc_entry->pipe.srv = SMB_STRDUP(srv);
        rpc_entry->cmds = SMB_REALLOC_ARRAY(rpc_entry->cmds, struct api_struct, rpc_entry->n_cmds + size);
	if (!rpc_entry->cmds) {
		return NT_STATUS_NO_MEMORY;
	}
        memcpy(rpc_entry->cmds + rpc_entry->n_cmds, cmds, size * sizeof(struct api_struct));
        rpc_entry->n_cmds += size;
        
        return NT_STATUS_OK;
}

/*******************************************************************
 Handle a SPNEGO krb5 bind auth.
*******************************************************************/

static BOOL pipe_spnego_auth_bind_kerberos(pipes_struct *p, prs_struct *rpc_in_p, RPC_HDR_AUTH *pauth_info,
		DATA_BLOB *psecblob, prs_struct *pout_auth)
{
	return False;
}

/*******************************************************************
 Handle the first part of a SPNEGO bind auth.
*******************************************************************/

static BOOL pipe_spnego_auth_bind_negotiate(pipes_struct *p, prs_struct *rpc_in_p,
					RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
{
	DATA_BLOB blob;
	DATA_BLOB secblob;
	DATA_BLOB response;
	DATA_BLOB chal;
	char *OIDs[ASN1_MAX_OIDS];
        int i;
	NTSTATUS status;
        BOOL got_kerberos_mechanism = False;
	AUTH_NTLMSSP_STATE *a = NULL;
	RPC_HDR_AUTH auth_info;

	ZERO_STRUCT(secblob);
	ZERO_STRUCT(chal);
	ZERO_STRUCT(response);

	/* Grab the SPNEGO blob. */
	blob = data_blob(NULL,p->hdr.auth_len);

	if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
		DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
			(unsigned int)p->hdr.auth_len ));
		goto err;
	}

	if (blob.data[0] != ASN1_APPLICATION(0)) {
		goto err;
	}

	/* parse out the OIDs and the first sec blob */
	if (!parse_negTokenTarg(blob, OIDs, &secblob)) {
		DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
		goto err;
        }

	if (strcmp(OID_KERBEROS5, OIDs[0]) == 0 || strcmp(OID_KERBEROS5_OLD, OIDs[0]) == 0) {
		got_kerberos_mechanism = True;
	}

	for (i=0;OIDs[i];i++) {
		DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs[i]));
		SAFE_FREE(OIDs[i]);
	}
	DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob.length));

	if ( got_kerberos_mechanism && ((lp_security()==SEC_ADS) || lp_use_kerberos_keytab()) ) {
		BOOL ret = pipe_spnego_auth_bind_kerberos(p, rpc_in_p, pauth_info, &secblob, pout_auth);
		data_blob_free(&secblob);
		data_blob_free(&blob);
		return ret;
	}

	if (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP && p->auth.a_u.auth_ntlmssp_state) {
		/* Free any previous auth type. */
		free_pipe_ntlmssp_auth_data(&p->auth);
	}

	/* Initialize the NTLM engine. */
	status = auth_ntlmssp_start(&a);
	if (!NT_STATUS_IS_OK(status)) {
		goto err;
	}

	/*
	 * Pass the first security blob of data to it.
	 * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
	 * which means we need another packet to complete the bind.
	 */

        status = auth_ntlmssp_update(a, secblob, &chal);

	if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
		DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
		goto err;
	}

	/* Generate the response blob we need for step 2 of the bind. */
	response = spnego_gen_auth_response(&chal, status, OID_NTLMSSP);

	/* Copy the blob into the pout_auth parse struct */
	init_rpc_hdr_auth(&auth_info, RPC_SPNEGO_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
	if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
		DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of RPC_HDR_AUTH failed.\n"));
		goto err;
	}

	if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
		DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
		goto err;
	}

	p->auth.a_u.auth_ntlmssp_state = a;
	p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
	p->auth.auth_type = PIPE_AUTH_TYPE_SPNEGO_NTLMSSP;

	data_blob_free(&blob);
	data_blob_free(&secblob);
	data_blob_free(&chal);
	data_blob_free(&response);

	/* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
	return True;

 err:

	data_blob_free(&blob);
	data_blob_free(&secblob);
	data_blob_free(&chal);
	data_blob_free(&response);

	p->auth.a_u.auth_ntlmssp_state = NULL;

	return False;
}

/*******************************************************************
 Handle the second part of a SPNEGO bind auth.
*******************************************************************/

static BOOL pipe_spnego_auth_bind_continue(pipes_struct *p, prs_struct *rpc_in_p,
					RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
{
	RPC_HDR_AUTH auth_info;
	DATA_BLOB spnego_blob;
	DATA_BLOB auth_blob;
	DATA_BLOB auth_reply;
	DATA_BLOB response;
	AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;

	ZERO_STRUCT(spnego_blob);
	ZERO_STRUCT(auth_blob);
	ZERO_STRUCT(auth_reply);
	ZERO_STRUCT(response);

	if (p->auth.auth_type != PIPE_AUTH_TYPE_SPNEGO_NTLMSSP || !a) {
		DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
		goto err;
	}

	/* Grab the SPNEGO blob. */
	spnego_blob = data_blob(NULL,p->hdr.auth_len);

	if (!prs_copy_data_out((char *)spnego_blob.data, rpc_in_p, p->hdr.auth_len)) {
		DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
			(unsigned int)p->hdr.auth_len ));
		goto err;
	}

	if (spnego_blob.data[0] != ASN1_CONTEXT(1)) {
		DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
		goto err;
	}

	if (!spnego_parse_auth(spnego_blob, &auth_blob)) {
		DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
		goto err;
	}

	/*
	 * The following call actually checks the challenge/response data.
	 * for correctness against the given DOMAIN\user name.
	 */
	
	if (!pipe_ntlmssp_verify_final(p, &auth_blob)) {
		goto err;
	}

	data_blob_free(&spnego_blob);
	data_blob_free(&auth_blob);

	/* Generate the spnego "accept completed" blob - no incoming data. */
	response = spnego_gen_auth_response(&auth_reply, NT_STATUS_OK, OID_NTLMSSP);

	/* Copy the blob into the pout_auth parse struct */
	init_rpc_hdr_auth(&auth_info, RPC_SPNEGO_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
	if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
		DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
		goto err;
	}

	if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
		DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
		goto err;
	}

	data_blob_free(&auth_reply);
	data_blob_free(&response);

	p->pipe_bound = True;

	return True;

 err:

	data_blob_free(&spnego_blob);
	data_blob_free(&auth_blob);
	data_blob_free(&auth_reply);
	data_blob_free(&response);

	free_pipe_ntlmssp_auth_data(&p->auth);
	p->auth.a_u.auth_ntlmssp_state = NULL;

	return False;
}

/*******************************************************************
 Handle an schannel bind auth.
*******************************************************************/

static BOOL pipe_schannel_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
					RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
{
	RPC_HDR_AUTH auth_info;
	RPC_AUTH_SCHANNEL_NEG neg;
	RPC_AUTH_VERIFIER auth_verifier;
	BOOL ret;
	struct dcinfo *pdcinfo;
	uint32 flags;

	if (!smb_io_rpc_auth_schannel_neg("", &neg, rpc_in_p, 0)) {
		DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
		return False;
	}

	/*
	 * The neg.myname key here must match the remote computer name
	 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
	 * operations that use credentials.
	 */

	become_root();
	ret = secrets_restore_schannel_session_info(p->mem_ctx, neg.myname, &pdcinfo);
	unbecome_root();

	if (!ret) {
		DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
		return False;
	}

	p->auth.a_u.schannel_auth = TALLOC_P(p->pipe_state_mem_ctx, struct schannel_auth_struct);
	if (!p->auth.a_u.schannel_auth) {
		TALLOC_FREE(pdcinfo);
		return False;
	}

	memset(p->auth.a_u.schannel_auth->sess_key, 0, sizeof(p->auth.a_u.schannel_auth->sess_key));
	memcpy(p->auth.a_u.schannel_auth->sess_key, pdcinfo->sess_key,
			sizeof(pdcinfo->sess_key));

	TALLOC_FREE(pdcinfo);

	p->auth.a_u.schannel_auth->seq_num = 0;

	/*
	 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
	 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
	 * struct of the person who opened the pipe. I need to test this further. JRA.
	 */

	init_rpc_hdr_auth(&auth_info, RPC_SCHANNEL_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
	if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
		DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
		return False;
	}

	/*** SCHANNEL verifier ***/

	init_rpc_auth_verifier(&auth_verifier, "\001", 0x0);
	if(!smb_io_rpc_schannel_verifier("", &auth_verifier, pout_auth, 0)) {
		DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_AUTH_VERIFIER failed.\n"));
		return False;
	}

	prs_align(pout_auth);

	flags = 5;
	if(!prs_uint32("flags ", pout_auth, 0, &flags)) {
		return False;
	}

	DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
		neg.domain, neg.myname));

	/* We're finished with this bind - no more packets. */
	p->auth.auth_data_free_func = NULL;
	p->auth.auth_type = PIPE_AUTH_TYPE_SCHANNEL;

	p->pipe_bound = True;

	return True;
}

/*******************************************************************
 Handle an NTLMSSP bind auth.
*******************************************************************/

static BOOL pipe_ntlmssp_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
					RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
{
	RPC_HDR_AUTH auth_info;
        DATA_BLOB blob;
	DATA_BLOB response;
        NTSTATUS status;
	AUTH_NTLMSSP_STATE *a = NULL;

	ZERO_STRUCT(blob);
	ZERO_STRUCT(response);

	/* Grab the NTLMSSP blob. */
	blob = data_blob(NULL,p->hdr.auth_len);

	if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
		DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
			(unsigned int)p->hdr.auth_len ));
		goto err;
	}

	if (strncmp((char *)blob.data, "NTLMSSP", 7) != 0) {
		DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
                goto err;
        }

	/* We have an NTLMSSP blob. */
	status = auth_ntlmssp_start(&a);
	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
			nt_errstr(status) ));
		goto err;
	}

	status = auth_ntlmssp_update(a, blob, &response);
	if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
		DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
			nt_errstr(status) ));
		goto err;
	}

	data_blob_free(&blob);

	/* Copy the blob into the pout_auth parse struct */
	init_rpc_hdr_auth(&auth_info, RPC_NTLMSSP_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
	if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
		DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
		goto err;
	}

	if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
		DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
		goto err;
	}

	p->auth.a_u.auth_ntlmssp_state = a;
	p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
	p->auth.auth_type = PIPE_AUTH_TYPE_NTLMSSP;

	data_blob_free(&blob);
	data_blob_free(&response);

	DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));

	/* We can't set pipe_bound True yet - we need an RPC_AUTH3 response packet... */
	return True;

  err:

	data_blob_free(&blob);
	data_blob_free(&response);

	free_pipe_ntlmssp_auth_data(&p->auth);
	p->auth.a_u.auth_ntlmssp_state = NULL;
	return False;
}

/*******************************************************************
 Respond to a pipe bind request.
*******************************************************************/

BOOL api_pipe_bind_req(pipes_struct *p, prs_struct *rpc_in_p)
{
	RPC_HDR_BA hdr_ba;
	RPC_HDR_RB hdr_rb;
	RPC_HDR_AUTH auth_info;
	uint16 assoc_gid;
	fstring ack_pipe_name;
	prs_struct out_hdr_ba;
	prs_struct out_auth;
	prs_struct outgoing_rpc;
	int i = 0;
	int auth_len = 0;
	unsigned int auth_type = RPC_ANONYMOUS_AUTH_TYPE;

	/* No rebinds on a bound pipe - use alter context. */
	if (p->pipe_bound) {
		DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound pipe %s.\n", p->pipe_srv_name));
		return setup_bind_nak(p);
	}

	prs_init( &outgoing_rpc, 0, p->mem_ctx, MARSHALL);

	/* 
	 * Marshall directly into the outgoing PDU space. We
	 * must do this as we need to set to the bind response
	 * header and are never sending more than one PDU here.
	 */

	prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);

	/*
	 * Setup the memory to marshall the ba header, and the
	 * auth footers.
	 */

	if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
		DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
		prs_mem_free(&outgoing_rpc);
		return False;
	}

	if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
		DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
		prs_mem_free(&outgoing_rpc);
		prs_mem_free(&out_hdr_ba);
		return False;
	}

	DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__));

	/*
	 * Try and find the correct pipe name to ensure
	 * that this is a pipe name we support.
	 */


	for (i = 0; i < rpc_lookup_size; i++) {
	        if (strequal(rpc_lookup[i].pipe.clnt, p->name)) {
			DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
				rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
			fstrcpy(p->pipe_srv_name, rpc_lookup[i].pipe.srv);
			break;
		}
	}

	if (i == rpc_lookup_size) {
		if (NT_STATUS_IS_ERR(smb_probe_module("rpc", p->name))) {
                       DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
                                p->name ));
			prs_mem_free(&outgoing_rpc);
			prs_mem_free(&out_hdr_ba);
			prs_mem_free(&out_auth);

			return setup_bind_nak(p);
                }

                for (i = 0; i < rpc_lookup_size; i++) {
                       if (strequal(rpc_lookup[i].pipe.clnt, p->name)) {
                               DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
                                         rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
                               fstrcpy(p->pipe_srv_name, rpc_lookup[i].pipe.srv);
                               break;
                       }
                }

		if (i == rpc_lookup_size) {
			DEBUG(0, ("module %s doesn't provide functions for pipe %s!\n", p->name, p->name));
			goto err_exit;
		}
	}

	/* decode the bind request */
	if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0))  {
		DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB struct.\n"));
		goto err_exit;
	}

	/* name has to be \PIPE\xxxxx */
	fstrcpy(ack_pipe_name, "\\PIPE\\");
	fstrcat(ack_pipe_name, p->pipe_srv_name);

	DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__));

	/*
	 * Check if this is an authenticated bind request.
	 */

	if (p->hdr.auth_len) {
		/* 
		 * Decode the authentication verifier.
		 */

		if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
			DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
			goto err_exit;
		}

		auth_type = auth_info.auth_type;

		/* Work out if we have to sign or seal etc. */
		switch (auth_info.auth_level) {
			case RPC_AUTH_LEVEL_INTEGRITY:
				p->auth.auth_level = PIPE_AUTH_LEVEL_INTEGRITY;
				break;
			case RPC_AUTH_LEVEL_PRIVACY:
				p->auth.auth_level = PIPE_AUTH_LEVEL_PRIVACY;
				break;
			default:
				DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
					(unsigned int)auth_info.auth_level ));
				goto err_exit;
		}
	} else {
		ZERO_STRUCT(auth_info);
	}

	assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;

	switch(auth_type) {
		case RPC_NTLMSSP_AUTH_TYPE:
			if (!pipe_ntlmssp_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
				goto err_exit;
			}
			assoc_gid = 0x7a77;
			break;

		case RPC_SCHANNEL_AUTH_TYPE:
			if (!pipe_schannel_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
				goto err_exit;
			}
			break;

		case RPC_SPNEGO_AUTH_TYPE:
			if (!pipe_spnego_auth_bind_negotiate(p, rpc_in_p, &auth_info, &out_auth)) {
				goto err_exit;
			}
			break;

		case RPC_ANONYMOUS_AUTH_TYPE:
			/* Unauthenticated bind request. */
			/* We're finished - no more packets. */
			p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
			/* We must set the pipe auth_level here also. */
			p->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
			p->pipe_bound = True;
			break;

		default:
			DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type ));
			goto err_exit;
	}

	/*
	 * Create the bind response struct.
	 */

	/* If the requested abstract synt uuid doesn't match our client pipe,
		reject the bind_ack & set the transfer interface synt to all 0's,
		ver 0 (observed when NT5 attempts to bind to abstract interfaces
		unknown to NT4)
		Needed when adding entries to a DACL from NT5 - SK */

	if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
				hdr_rb.rpc_context[0].context_id )) {
		init_rpc_hdr_ba(&hdr_ba,
	                RPC_MAX_PDU_FRAG_LEN,
	                RPC_MAX_PDU_FRAG_LEN,
	                assoc_gid,
	                ack_pipe_name,
	                0x1, 0x0, 0x0,
	                &hdr_rb.rpc_context[0].transfer[0]);
	} else {
		RPC_IFACE null_interface;
		ZERO_STRUCT(null_interface);
		/* Rejection reason: abstract syntax not supported */
		init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
					RPC_MAX_PDU_FRAG_LEN, assoc_gid,
					ack_pipe_name, 0x1, 0x2, 0x1,
					&null_interface);
		p->pipe_bound = False;
	}

	/*
	 * and marshall it.
	 */

	if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
		DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
		goto err_exit;
	}

	/*
	 * Create the header, now we know the length.
	 */

	if (prs_offset(&out_auth)) {
		auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
	}

	init_rpc_hdr(&p->hdr, RPC_BINDACK, RPC_FLG_FIRST | RPC_FLG_LAST,
			p->hdr.call_id,
			RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
			auth_len);

	/*
	 * Marshall the header into the outgoing PDU.
	 */

	if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
		DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
		goto err_exit;
	}

	/*
	 * Now add the RPC_HDR_BA and any auth needed.
	 */

	if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
		DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
		goto err_exit;
	}

	if (auth_len && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
		DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
		goto err_exit;
	}

	/*
	 * Setup the lengths for the initial reply.
	 */

	p->out_data.data_sent_length = 0;
	p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
	p->out_data.current_pdu_sent = 0;

	prs_mem_free(&out_hdr_ba);
	prs_mem_free(&out_auth);

	return True;

  err_exit:

	prs_mem_free(&outgoing_rpc);
	prs_mem_free(&out_hdr_ba);
	prs_mem_free(&out_auth);
	return setup_bind_nak(p);
}

/****************************************************************************
 Deal with an alter context call. Can be third part of 3 leg auth request for
 SPNEGO calls.
****************************************************************************/

BOOL api_pipe_alter_context(pipes_struct *p, prs_struct *rpc_in_p)
{
	RPC_HDR_BA hdr_ba;
	RPC_HDR_RB hdr_rb;
	RPC_HDR_AUTH auth_info;
	uint16 assoc_gid;
	fstring ack_pipe_name;
	prs_struct out_hdr_ba;
	prs_struct out_auth;
	prs_struct outgoing_rpc;
	int auth_len = 0;

	prs_init( &outgoing_rpc, 0, p->mem_ctx, MARSHALL);

	/* 
	 * Marshall directly into the outgoing PDU space. We
	 * must do this as we need to set to the bind response
	 * header and are never sending more than one PDU here.
	 */

	prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);

	/*
	 * Setup the memory to marshall the ba header, and the
	 * auth footers.
	 */

	if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
		DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
		prs_mem_free(&outgoing_rpc);
		return False;
	}

	if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
		DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
		prs_mem_free(&outgoing_rpc);
		prs_mem_free(&out_hdr_ba);
		return False;
	}

	DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__));

	/* decode the alter context request */
	if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0))  {
		DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
		goto err_exit;
	}

	/* secondary address CAN be NULL
	 * as the specs say it's ignored.
	 * It MUST be NULL to have the spoolss working.
	 */
	fstrcpy(ack_pipe_name,"");

	DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__));

	/*
	 * Check if this is an authenticated alter context request.
	 */

	if (p->hdr.auth_len != 0) {
		/* 
		 * Decode the authentication verifier.
		 */

		if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
			DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
			goto err_exit;
		}

		/*
		 * Currently only the SPNEGO auth type uses the alter ctx
		 * response in place of the NTLMSSP auth3 type.
		 */

		if (auth_info.auth_type == RPC_SPNEGO_AUTH_TYPE) {
			/* We can only finish if the pipe is unbound. */
			if (!p->pipe_bound) {
				if (!pipe_spnego_auth_bind_continue(p, rpc_in_p, &auth_info, &out_auth)) {
					goto err_exit;
				}
			} else {
				goto err_exit;
			}
		}
	} else {
		ZERO_STRUCT(auth_info);
	}

	assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;

	/*
	 * Create the bind response struct.
	 */

	/* If the requested abstract synt uuid doesn't match our client pipe,
		reject the bind_ack & set the transfer interface synt to all 0's,
		ver 0 (observed when NT5 attempts to bind to abstract interfaces
		unknown to NT4)
		Needed when adding entries to a DACL from NT5 - SK */

	if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
				hdr_rb.rpc_context[0].context_id )) {
		init_rpc_hdr_ba(&hdr_ba,
	                RPC_MAX_PDU_FRAG_LEN,
	                RPC_MAX_PDU_FRAG_LEN,
	                assoc_gid,
	                ack_pipe_name,
	                0x1, 0x0, 0x0,
	                &hdr_rb.rpc_context[0].transfer[0]);
	} else {
		RPC_IFACE null_interface;
		ZERO_STRUCT(null_interface);
		/* Rejection reason: abstract syntax not supported */
		init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
					RPC_MAX_PDU_FRAG_LEN, assoc_gid,
					ack_pipe_name, 0x1, 0x2, 0x1,
					&null_interface);
		p->pipe_bound = False;
	}

	/*
	 * and marshall it.
	 */

	if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
		DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
		goto err_exit;
	}

	/*
	 * Create the header, now we know the length.
	 */

	if (prs_offset(&out_auth)) {
		auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
	}

	init_rpc_hdr(&p->hdr, RPC_ALTCONTRESP, RPC_FLG_FIRST | RPC_FLG_LAST,
			p->hdr.call_id,
			RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
			auth_len);

	/*
	 * Marshall the header into the outgoing PDU.
	 */

	if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
		DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
		goto err_exit;
	}

	/*
	 * Now add the RPC_HDR_BA and any auth needed.
	 */

	if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
		DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
		goto err_exit;
	}

	if (auth_len && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
		DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
		goto err_exit;
	}

	/*
	 * Setup the lengths for the initial reply.
	 */

	p->out_data.data_sent_length = 0;
	p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
	p->out_data.current_pdu_sent = 0;

	prs_mem_free(&out_hdr_ba);
	prs_mem_free(&out_auth);

	return True;

  err_exit:

	prs_mem_free(&outgoing_rpc);
	prs_mem_free(&out_hdr_ba);
	prs_mem_free(&out_auth);
	return setup_bind_nak(p);
}

/****************************************************************************
 Deal with NTLMSSP sign & seal processing on an RPC request.
****************************************************************************/

BOOL api_pipe_ntlmssp_auth_process(pipes_struct *p, prs_struct *rpc_in,
					uint32 *p_ss_padding_len, NTSTATUS *pstatus)
{
	RPC_HDR_AUTH auth_info;
	uint32 auth_len = p->hdr.auth_len;
	uint32 save_offset = prs_offset(rpc_in);
	AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
	unsigned char *data = NULL;
	size_t data_len;
	unsigned char *full_packet_data = NULL;
	size_t full_packet_data_len;
	DATA_BLOB auth_blob;
	
	*pstatus = NT_STATUS_OK;

	if (p->auth.auth_level == PIPE_AUTH_LEVEL_NONE || p->auth.auth_level == PIPE_AUTH_LEVEL_CONNECT) {
		return True;
	}

	if (!a) {
		*pstatus = NT_STATUS_INVALID_PARAMETER;
		return False;
	}

	/* Ensure there's enough data for an authenticated request. */
	if ((auth_len > RPC_MAX_SIGN_SIZE) ||
			(RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len > p->hdr.frag_len)) {
		DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
			(unsigned int)auth_len ));
		*pstatus = NT_STATUS_INVALID_PARAMETER;
		return False;
	}

	/*
	 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
	 * after the RPC header. 
 	 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
	 * functions as NTLMv2 checks the rpc headers also.
	 */

	data = (unsigned char *)(prs_data_p(rpc_in) + RPC_HDR_REQ_LEN);
	data_len = (size_t)(p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN - RPC_HDR_AUTH_LEN - auth_len);

	full_packet_data = p->in_data.current_in_pdu;
	full_packet_data_len = p->hdr.frag_len - auth_len;

	/* Pull the auth header and the following data into a blob. */
	if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
		DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move offset to %u.\n",
			(unsigned int)RPC_HDR_REQ_LEN + (unsigned int)data_len ));
		*pstatus = NT_STATUS_INVALID_PARAMETER;
		return False;
	}

	if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
		DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to unmarshall RPC_HDR_AUTH.\n"));
		*pstatus = NT_STATUS_INVALID_PARAMETER;
		return False;
	}

	auth_blob.data = (unsigned char *)prs_data_p(rpc_in) + prs_offset(rpc_in);
	auth_blob.length = auth_len;
	
	switch (p->auth.auth_level) {
		case PIPE_AUTH_LEVEL_PRIVACY:
			/* Data is encrypted. */
			*pstatus = ntlmssp_unseal_packet(a->ntlmssp_state,
							data, data_len,
							full_packet_data,
							full_packet_data_len,
							&auth_blob);
			if (!NT_STATUS_IS_OK(*pstatus)) {
				return False;
			}
			break;
		case PIPE_AUTH_LEVEL_INTEGRITY:
			/* Data is signed. */
			*pstatus = ntlmssp_check_packet(a->ntlmssp_state,
							data, data_len,
							full_packet_data,
							full_packet_data_len,
							&auth_blob);
			if (!NT_STATUS_IS_OK(*pstatus)) {
				return False;
			}
			break;
		default:
			*pstatus = NT_STATUS_INVALID_PARAMETER;
			return False;
	}

	/*
	 * Return the current pointer to the data offset.
	 */

	if(!prs_set_offset(rpc_in, save_offset)) {
		DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
			(unsigned int)save_offset ));
		*pstatus = NT_STATUS_INVALID_PARAMETER;
		return False;
	}

	/*
	 * Remember the padding length. We must remove it from the real data
	 * stream once the sign/seal is done.
	 */

	*p_ss_padding_len = auth_info.auth_pad_len;

	return True;
}

/****************************************************************************
 Deal with schannel processing on an RPC request.
****************************************************************************/

BOOL api_pipe_schannel_process(pipes_struct *p, prs_struct *rpc_in, uint32 *p_ss_padding_len)
{
	uint32 data_len;
	uint32 auth_len;
	uint32 save_offset = prs_offset(rpc_in);
	RPC_HDR_AUTH auth_info;
	RPC_AUTH_SCHANNEL_CHK schannel_chk;

	auth_len = p->hdr.auth_len;

	if (auth_len != RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN) {
		DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len ));
		return False;
	}

	/*
	 * The following is that length of the data we must verify or unseal.
	 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
	 * preceeding the auth_data.
	 */

	if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len) {
		DEBUG(0,("Incorrect frag %u, auth %u.\n",
			(unsigned int)p->hdr.frag_len,
			(unsigned int)auth_len ));
		return False;
	}

	data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN - 
		RPC_HDR_AUTH_LEN - auth_len;
	
	DEBUG(5,("data %d auth %d\n", data_len, auth_len));

	if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
		DEBUG(0,("cannot move offset to %u.\n",
			 (unsigned int)RPC_HDR_REQ_LEN + data_len ));
		return False;
	}

	if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
		DEBUG(0,("failed to unmarshall RPC_HDR_AUTH.\n"));
		return False;
	}

	if (auth_info.auth_type != RPC_SCHANNEL_AUTH_TYPE) {
		DEBUG(0,("Invalid auth info %d on schannel\n",
			 auth_info.auth_type));
		return False;
	}

	if(!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN, &schannel_chk, rpc_in, 0)) {
		DEBUG(0,("failed to unmarshal RPC_AUTH_SCHANNEL_CHK.\n"));
		return False;
	}

	if (!schannel_decode(p->auth.a_u.schannel_auth,
			   p->auth.auth_level,
			   SENDER_IS_INITIATOR,
			   &schannel_chk,
			   prs_data_p(rpc_in)+RPC_HDR_REQ_LEN, data_len)) {
		DEBUG(3,("failed to decode PDU\n"));
		return False;
	}

	/*
	 * Return the current pointer to the data offset.
	 */

	if(!prs_set_offset(rpc_in, save_offset)) {
		DEBUG(0,("failed to set offset back to %u\n",
			 (unsigned int)save_offset ));
		return False;
	}

	/* The sequence number gets incremented on both send and receive. */
	p->auth.a_u.schannel_auth->seq_num++;

	/*
	 * Remember the padding length. We must remove it from the real data
	 * stream once the sign/seal is done.
	 */

	*p_ss_padding_len = auth_info.auth_pad_len;

	return True;
}

/****************************************************************************
 Return a user struct for a pipe user.
****************************************************************************/

struct current_user *get_current_user(struct current_user *user, pipes_struct *p)
{
	if (p->pipe_bound &&
			(p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP ||
			(p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
		memcpy(user, &p->pipe_user, sizeof(struct current_user));
	} else {
		memcpy(user, &current_user, sizeof(struct current_user));
	}

	return user;
}

/****************************************************************************
 Find the set of RPC functions associated with this context_id
****************************************************************************/

static PIPE_RPC_FNS* find_pipe_fns_by_context( PIPE_RPC_FNS *list, uint32 context_id )
{
	PIPE_RPC_FNS *fns = NULL;
	PIPE_RPC_FNS *tmp = NULL;
	
	if ( !list ) {
		DEBUG(0,("find_pipe_fns_by_context: ERROR!  No context list for pipe!\n"));
		return NULL;
	}
	
	for (tmp=list; tmp; tmp=tmp->next ) {
		if ( tmp->context_id == context_id )
			break;
	}
	
	fns = tmp;
	
	return fns;
}

/****************************************************************************
 Memory cleanup.
****************************************************************************/

void free_pipe_rpc_context( PIPE_RPC_FNS *list )
{
	PIPE_RPC_FNS *tmp = list;
	PIPE_RPC_FNS *tmp2;
		
	while (tmp) {
		tmp2 = tmp->next;
		SAFE_FREE(tmp);
		tmp = tmp2;
	}

	return;	
}

/****************************************************************************
 Find the correct RPC function to call for this request.
 If the pipe is authenticated then become the correct UNIX user
 before doing the call.
****************************************************************************/

BOOL api_pipe_request(pipes_struct *p)
{
	BOOL ret = False;
	BOOL changed_user = False;
	PIPE_RPC_FNS *pipe_fns;
	
	if (p->pipe_bound &&
			((p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) ||
			 (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
		if(!become_authenticated_pipe_user(p)) {
			prs_mem_free(&p->out_data.rdata);
			return False;
		}
		changed_user = True;
	}

	DEBUG(5, ("Requested \\PIPE\\%s\n", p->name));
	
	/* get the set of RPC functions for this context */
	
	pipe_fns = find_pipe_fns_by_context(p->contexts, p->hdr_req.context_id);
	
	if ( pipe_fns ) {
		set_current_rpc_talloc(p->mem_ctx);
		ret = api_rpcTNP(p, p->name, pipe_fns->cmds, pipe_fns->n_cmds);
		set_current_rpc_talloc(NULL);	
	}
	else {
		DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
			p->hdr_req.context_id, p->name));
	}

	if (changed_user) {
		unbecome_authenticated_pipe_user();
	}

	return ret;
}

/*******************************************************************
 Calls the underlying RPC function for a named pipe.
 ********************************************************************/

BOOL api_rpcTNP(pipes_struct *p, const char *rpc_name, 
		const struct api_struct *api_rpc_cmds, int n_cmds)
{
	int fn_num;
	fstring name;
	uint32 offset1, offset2;
 
	/* interpret the command */
	DEBUG(4,("api_rpcTNP: %s op 0x%x - ", rpc_name, p->hdr_req.opnum));

	slprintf(name, sizeof(name)-1, "in_%s", rpc_name);
	prs_dump(name, p->hdr_req.opnum, &p->in_data.data);

	for (fn_num = 0; fn_num < n_cmds; fn_num++) {
		if (api_rpc_cmds[fn_num].opnum == p->hdr_req.opnum && api_rpc_cmds[fn_num].fn != NULL) {
			DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds[fn_num].name));
			break;
		}
	}

	if (fn_num == n_cmds) {
		/*
		 * For an unknown RPC just return a fault PDU but
		 * return True to allow RPC's on the pipe to continue
		 * and not put the pipe into fault state. JRA.
		 */
		DEBUG(4, ("unknown\n"));
		setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
		return True;
	}

	offset1 = prs_offset(&p->out_data.rdata);

        DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n", 
                fn_num, api_rpc_cmds[fn_num].fn));
	/* do the actual command */
	if(!api_rpc_cmds[fn_num].fn(p)) {
		DEBUG(0,("api_rpcTNP: %s: %s failed.\n", rpc_name, api_rpc_cmds[fn_num].name));
		prs_mem_free(&p->out_data.rdata);
		return False;
	}

	if (p->bad_handle_fault_state) {
		DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
		p->bad_handle_fault_state = False;
		setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH));
		return True;
	}

	slprintf(name, sizeof(name)-1, "out_%s", rpc_name);
	offset2 = prs_offset(&p->out_data.rdata);
	prs_set_offset(&p->out_data.rdata, offset1);
	prs_dump(name, p->hdr_req.opnum, &p->out_data.rdata);
	prs_set_offset(&p->out_data.rdata, offset2);

	DEBUG(5,("api_rpcTNP: called %s successfully\n", rpc_name));

	/* Check for buffer underflow in rpc parsing */

	if ((DEBUGLEVEL >= 10) && 
	    (prs_offset(&p->in_data.data) != prs_data_size(&p->in_data.data))) {
		size_t data_len = prs_data_size(&p->in_data.data) - prs_offset(&p->in_data.data);
		char *data = SMB_MALLOC(data_len);

		DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
		if (data) {
			prs_uint8s(False, "", &p->in_data.data, 0, (unsigned char *)data, (uint32)data_len);
			SAFE_FREE(data);
		}

	}

	return True;
}

/*******************************************************************
*******************************************************************/

void get_pipe_fns( int idx, struct api_struct **fns, int *n_fns )
{
	struct api_struct *cmds = NULL;
	int               n_cmds = 0;

	switch ( idx ) {
		case PI_LSARPC:
			lsa_get_pipe_fns( &cmds, &n_cmds );
			break;
		case PI_LSARPC_DS:
			lsa_ds_get_pipe_fns( &cmds, &n_cmds );
			break;
		case PI_SAMR:
			samr_get_pipe_fns( &cmds, &n_cmds );
			break;
		case PI_NETLOGON:
			netlog_get_pipe_fns( &cmds, &n_cmds );
			break;
		case PI_SRVSVC:
			srvsvc_get_pipe_fns( &cmds, &n_cmds );
			break;
		case PI_WKSSVC:
			wkssvc_get_pipe_fns( &cmds, &n_cmds );
			break;
		case PI_WINREG:
			reg_get_pipe_fns( &cmds, &n_cmds );
			break;
		case PI_SPOOLSS:
			spoolss_get_pipe_fns( &cmds, &n_cmds );
			break;
		case PI_NETDFS:
			netdfs_get_pipe_fns( &cmds, &n_cmds );
			break;
		case PI_SVCCTL:
			svcctl_get_pipe_fns( &cmds, &n_cmds );
			break;
	        case PI_EVENTLOG:
			eventlog_get_pipe_fns( &cmds, &n_cmds );
			break;
		case PI_NTSVCS:
			ntsvcs_get_pipe_fns( &cmds, &n_cmds );
			break;
#ifdef DEVELOPER
		case PI_ECHO:
			echo_get_pipe_fns( &cmds, &n_cmds );
			break;
#endif
		default:
			DEBUG(0,("get_pipe_fns: Unknown pipe index! [%d]\n", idx));
	}

	*fns = cmds;
	*n_fns = n_cmds;

	return;
}