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s3:libsmb: add tstream_is_cli_np()
[Samba/gebeck_regimport.git] / source3 / libsmb / libsmb_server.c
blob369e03781adde53f59c5c43163827f4bc575187d
1 /*
2 Unix SMB/Netbios implementation.
3 SMB client library implementation
4 Copyright (C) Andrew Tridgell 1998
5 Copyright (C) Richard Sharpe 2000, 2002
6 Copyright (C) John Terpstra 2000
7 Copyright (C) Tom Jansen (Ninja ISD) 2002
8 Copyright (C) Derrell Lipman 2003-2008
9 Copyright (C) Jeremy Allison 2007, 2008
10 Copyright (C) SATOH Fumiyasu <fumiyas@osstech.co.jp> 2009.
11
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 3 of the License, or
15 (at your option) any later version.
16
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 */
25
26 #include "includes.h"
27 #include "libsmbclient.h"
28 #include "libsmb_internal.h"
29 #include "../librpc/gen_ndr/ndr_lsa.h"
30 #include "rpc_client/cli_lsarpc.h"
31 #include "libcli/security/security.h"
32
33 /*
34 * Check a server for being alive and well.
35 * returns 0 if the server is in shape. Returns 1 on error
36 *
37 * Also useable outside libsmbclient to enable external cache
38 * to do some checks too.
39 */
40 int
41 SMBC_check_server(SMBCCTX * context,
42 SMBCSRV * server)
43 {
44 socklen_t size;
45 struct sockaddr addr;
46
47 size = sizeof(addr);
48 return (getpeername(server->cli->fd, &addr, &size) == -1);
49 }
50
51 /*
52 * Remove a server from the cached server list it's unused.
53 * On success, 0 is returned. 1 is returned if the server could not be removed.
54 *
55 * Also useable outside libsmbclient
56 */
57 int
58 SMBC_remove_unused_server(SMBCCTX * context,
59 SMBCSRV * srv)
60 {
61 SMBCFILE * file;
62
63 /* are we being fooled ? */
64 if (!context || !context->internal->initialized || !srv) {
65 return 1;
66 }
67
68 /* Check all open files/directories for a relation with this server */
69 for (file = context->internal->files; file; file = file->next) {
70 if (file->srv == srv) {
71 /* Still used */
72 DEBUG(3, ("smbc_remove_usused_server: "
73 "%p still used by %p.\n",
74 srv, file));
75 return 1;
76 }
77 }
78
79 DLIST_REMOVE(context->internal->servers, srv);
80
81 cli_shutdown(srv->cli);
82 srv->cli = NULL;
83
84 DEBUG(3, ("smbc_remove_usused_server: %p removed.\n", srv));
85
86 smbc_getFunctionRemoveCachedServer(context)(context, srv);
87
88 SAFE_FREE(srv);
89 return 0;
90 }
91
92 /****************************************************************
93 * Call the auth_fn with fixed size (fstring) buffers.
94 ***************************************************************/
95 void
96 SMBC_call_auth_fn(TALLOC_CTX *ctx,
97 SMBCCTX *context,
98 const char *server,
99 const char *share,
100 char **pp_workgroup,
101 char **pp_username,
102 char **pp_password)
103 {
104 fstring workgroup;
105 fstring username;
106 fstring password;
107 smbc_get_auth_data_with_context_fn auth_with_context_fn;
108
109 strlcpy(workgroup, *pp_workgroup, sizeof(workgroup));
110 strlcpy(username, *pp_username, sizeof(username));
111 strlcpy(password, *pp_password, sizeof(password));
112
113 /* See if there's an authentication with context function provided */
114 auth_with_context_fn = smbc_getFunctionAuthDataWithContext(context);
115 if (auth_with_context_fn)
116 {
117 (* auth_with_context_fn)(context,
118 server, share,
119 workgroup, sizeof(workgroup),
120 username, sizeof(username),
121 password, sizeof(password));
122 }
123 else
124 {
125 smbc_getFunctionAuthData(context)(server, share,
126 workgroup, sizeof(workgroup),
127 username, sizeof(username),
128 password, sizeof(password));
129 }
130
131 TALLOC_FREE(*pp_workgroup);
132 TALLOC_FREE(*pp_username);
133 TALLOC_FREE(*pp_password);
134
135 *pp_workgroup = talloc_strdup(ctx, workgroup);
136 *pp_username = talloc_strdup(ctx, username);
137 *pp_password = talloc_strdup(ctx, password);
138 }
139
140
141 void
142 SMBC_get_auth_data(const char *server, const char *share,
143 char *workgroup_buf, int workgroup_buf_len,
144 char *username_buf, int username_buf_len,
145 char *password_buf, int password_buf_len)
146 {
147 /* Default function just uses provided data. Nothing to do. */
148 }
149
150
151
152 SMBCSRV *
153 SMBC_find_server(TALLOC_CTX *ctx,
154 SMBCCTX *context,
155 const char *server,
156 const char *share,
157 char **pp_workgroup,
158 char **pp_username,
159 char **pp_password)
160 {
161 SMBCSRV *srv;
162 int auth_called = 0;
163
164 if (!pp_workgroup || !pp_username || !pp_password) {
165 return NULL;
166 }
167
168 check_server_cache:
169
170 srv = smbc_getFunctionGetCachedServer(context)(context,
171 server, share,
172 *pp_workgroup,
173 *pp_username);
174
175 if (!auth_called && !srv && (!*pp_username || !(*pp_username)[0] ||
176 !*pp_password || !(*pp_password)[0])) {
177 SMBC_call_auth_fn(ctx, context, server, share,
178 pp_workgroup, pp_username, pp_password);
179
180 /*
181 * However, smbc_auth_fn may have picked up info relating to
182 * an existing connection, so try for an existing connection
183 * again ...
184 */
185 auth_called = 1;
186 goto check_server_cache;
187
188 }
189
190 if (srv) {
191 if (smbc_getFunctionCheckServer(context)(context, srv)) {
192 /*
193 * This server is no good anymore
194 * Try to remove it and check for more possible
195 * servers in the cache
196 */
197 if (smbc_getFunctionRemoveUnusedServer(context)(context,
198 srv)) {
199 /*
200 * We could not remove the server completely,
201 * remove it from the cache so we will not get
202 * it again. It will be removed when the last
203 * file/dir is closed.
204 */
205 smbc_getFunctionRemoveCachedServer(context)(context,
206 srv);
207 }
208
209 /*
210 * Maybe there are more cached connections to this
211 * server
212 */
213 goto check_server_cache;
214 }
215
216 return srv;
217 }
218
219 return NULL;
220 }
221
222 /*
223 * Connect to a server, possibly on an existing connection
224 *
225 * Here, what we want to do is: If the server and username
226 * match an existing connection, reuse that, otherwise, establish a
227 * new connection.
228 *
229 * If we have to create a new connection, call the auth_fn to get the
230 * info we need, unless the username and password were passed in.
231 */
232
233 static SMBCSRV *
234 SMBC_server_internal(TALLOC_CTX *ctx,
235 SMBCCTX *context,
236 bool connect_if_not_found,
237 const char *server,
238 const char *share,
239 char **pp_workgroup,
240 char **pp_username,
241 char **pp_password,
242 bool *in_cache)
243 {
244 SMBCSRV *srv=NULL;
245 char *workgroup = NULL;
246 struct cli_state *c;
247 struct nmb_name called, calling;
248 const char *server_n = server;
249 struct sockaddr_storage ss;
250 int tried_reverse = 0;
251 int port_try_first;
252 int port_try_next;
253 int is_ipc = (share != NULL && strcmp(share, "IPC$") == 0);
254 uint32 fs_attrs = 0;
255 const char *username_used;
256 NTSTATUS status;
257 char *newserver, *newshare;
258
259 zero_sockaddr(&ss);
260 ZERO_STRUCT(c);
261 *in_cache = false;
262
263 if (server[0] == 0) {
264 errno = EPERM;
265 return NULL;
266 }
267
268 /* Look for a cached connection */
269 srv = SMBC_find_server(ctx, context, server, share,
270 pp_workgroup, pp_username, pp_password);
271
272 /*
273 * If we found a connection and we're only allowed one share per
274 * server...
275 */
276 if (srv &&
277 *share != '\0' &&
278 smbc_getOptionOneSharePerServer(context)) {
279
280 /*
281 * ... then if there's no current connection to the share,
282 * connect to it. SMBC_find_server(), or rather the function
283 * pointed to by context->get_cached_srv_fn which
284 * was called by SMBC_find_server(), will have issued a tree
285 * disconnect if the requested share is not the same as the
286 * one that was already connected.
287 */
288
289 /*
290 * Use srv->cli->desthost and srv->cli->share instead of
291 * server and share below to connect to the actual share,
292 * i.e., a normal share or a referred share from
293 * 'msdfs proxy' share.
294 */
295 if (srv->cli->cnum == (uint16) -1) {
296 /* Ensure we have accurate auth info */
297 SMBC_call_auth_fn(ctx, context,
298 srv->cli->desthost,
299 srv->cli->share,
300 pp_workgroup,
301 pp_username,
302 pp_password);
303
304 if (!*pp_workgroup || !*pp_username || !*pp_password) {
305 errno = ENOMEM;
306 cli_shutdown(srv->cli);
307 srv->cli = NULL;
308 smbc_getFunctionRemoveCachedServer(context)(context,
309 srv);
310 return NULL;
311 }
312
313 /*
314 * We don't need to renegotiate encryption
315 * here as the encryption context is not per
316 * tid.
317 */
318
319 status = cli_tcon_andx(srv->cli, srv->cli->share, "?????",
320 *pp_password,
321 strlen(*pp_password)+1);
322 if (!NT_STATUS_IS_OK(status)) {
323 errno = map_errno_from_nt_status(status);
324 cli_shutdown(srv->cli);
325 srv->cli = NULL;
326 smbc_getFunctionRemoveCachedServer(context)(context,
327 srv);
328 srv = NULL;
329 }
330
331 /* Determine if this share supports case sensitivity */
332 if (is_ipc) {
333 DEBUG(4,
334 ("IPC$ so ignore case sensitivity\n"));
335 } else if (!NT_STATUS_IS_OK(cli_get_fs_attr_info(c, &fs_attrs))) {
336 DEBUG(4, ("Could not retrieve "
337 "case sensitivity flag: %s.\n",
338 cli_errstr(c)));
339
340 /*
341 * We can't determine the case sensitivity of
342 * the share. We have no choice but to use the
343 * user-specified case sensitivity setting.
344 */
345 if (smbc_getOptionCaseSensitive(context)) {
346 cli_set_case_sensitive(c, True);
347 } else {
348 cli_set_case_sensitive(c, False);
349 }
350 } else {
351 DEBUG(4,
352 ("Case sensitive: %s\n",
353 (fs_attrs & FILE_CASE_SENSITIVE_SEARCH
354 ? "True"
355 : "False")));
356 cli_set_case_sensitive(
357 c,
358 (fs_attrs & FILE_CASE_SENSITIVE_SEARCH
359 ? True
360 : False));
361 }
362
363 /*
364 * Regenerate the dev value since it's based on both
365 * server and share
366 */
367 if (srv) {
368 srv->dev = (dev_t)(str_checksum(srv->cli->desthost) ^
369 str_checksum(srv->cli->share));
370 }
371 }
372 }
373
374 /* If we have a connection... */
375 if (srv) {
376
377 /* ... then we're done here. Give 'em what they came for. */
378 *in_cache = true;
379 goto done;
380 }
381
382 /* If we're not asked to connect when a connection doesn't exist... */
383 if (! connect_if_not_found) {
384 /* ... then we're done here. */
385 return NULL;
386 }
387
388 if (!*pp_workgroup || !*pp_username || !*pp_password) {
389 errno = ENOMEM;
390 return NULL;
391 }
392
393 make_nmb_name(&calling, smbc_getNetbiosName(context), 0x0);
394 make_nmb_name(&called , server, 0x20);
395
396 DEBUG(4,("SMBC_server: server_n=[%s] server=[%s]\n", server_n, server));
397
398 DEBUG(4,(" -> server_n=[%s] server=[%s]\n", server_n, server));
399
400 again:
401
402 zero_sockaddr(&ss);
403
404 /* have to open a new connection */
405 if ((c = cli_initialise()) == NULL) {
406 errno = ENOMEM;
407 return NULL;
408 }
409
410 if (smbc_getOptionUseKerberos(context)) {
411 c->use_kerberos = True;
412 }
413
414 if (smbc_getOptionFallbackAfterKerberos(context)) {
415 c->fallback_after_kerberos = True;
416 }
417
418 if (smbc_getOptionUseCCache(context)) {
419 c->use_ccache = True;
420 }
421
422 c->timeout = smbc_getTimeout(context);
423
424 /*
425 * Force use of port 139 for first try if share is $IPC, empty, or
426 * null, so browse lists can work
427 */
428 if (share == NULL || *share == '\0' || is_ipc) {
429 port_try_first = 139;
430 port_try_next = 445;
431 } else {
432 port_try_first = 445;
433 port_try_next = 139;
434 }
435
436 c->port = port_try_first;
437
438 status = cli_connect(c, server_n, &ss);
439 if (!NT_STATUS_IS_OK(status)) {
440
441 /* First connection attempt failed. Try alternate port. */
442 c->port = port_try_next;
443
444 status = cli_connect(c, server_n, &ss);
445 if (!NT_STATUS_IS_OK(status)) {
446 cli_shutdown(c);
447 errno = ETIMEDOUT;
448 return NULL;
449 }
450 }
451
452 if (!cli_session_request(c, &calling, &called)) {
453 cli_shutdown(c);
454 if (strcmp(called.name, "*SMBSERVER")) {
455 make_nmb_name(&called , "*SMBSERVER", 0x20);
456 goto again;
457 } else { /* Try one more time, but ensure we don't loop */
458
459 /* Only try this if server is an IP address ... */
460
461 if (is_ipaddress(server) && !tried_reverse) {
462 fstring remote_name;
463 struct sockaddr_storage rem_ss;
464
465 if (!interpret_string_addr(&rem_ss, server,
466 NI_NUMERICHOST)) {
467 DEBUG(4, ("Could not convert IP address "
468 "%s to struct sockaddr_storage\n",
469 server));
470 errno = ETIMEDOUT;
471 return NULL;
472 }
473
474 tried_reverse++; /* Yuck */
475
476 if (name_status_find("*", 0, 0,
477 &rem_ss, remote_name)) {
478 make_nmb_name(&called,
479 remote_name,
480 0x20);
481 goto again;
482 }
483 }
484 }
485 errno = ETIMEDOUT;
486 return NULL;
487 }
488
489 DEBUG(4,(" session request ok\n"));
490
491 status = cli_negprot(c);
492
493 if (!NT_STATUS_IS_OK(status)) {
494 cli_shutdown(c);
495 errno = ETIMEDOUT;
496 return NULL;
497 }
498
499 username_used = *pp_username;
500
501 if (!NT_STATUS_IS_OK(cli_session_setup(c, username_used,
502 *pp_password,
503 strlen(*pp_password),
504 *pp_password,
505 strlen(*pp_password),
506 *pp_workgroup))) {
507
508 /* Failed. Try an anonymous login, if allowed by flags. */
509 username_used = "";
510
511 if (smbc_getOptionNoAutoAnonymousLogin(context) ||
512 !NT_STATUS_IS_OK(cli_session_setup(c, username_used,
513 *pp_password, 1,
514 *pp_password, 0,
515 *pp_workgroup))) {
516
517 cli_shutdown(c);
518 errno = EPERM;
519 return NULL;
520 }
521 }
522
523 status = cli_init_creds(c, username_used,
524 *pp_workgroup, *pp_password);
525 if (!NT_STATUS_IS_OK(status)) {
526 errno = map_errno_from_nt_status(status);
527 cli_shutdown(c);
528 return NULL;
529 }
530
531 DEBUG(4,(" session setup ok\n"));
532
533 /* here's the fun part....to support 'msdfs proxy' shares
534 (on Samba or windows) we have to issues a TRANS_GET_DFS_REFERRAL
535 here before trying to connect to the original share.
536 cli_check_msdfs_proxy() will fail if it is a normal share. */
537
538 if ((c->capabilities & CAP_DFS) &&
539 cli_check_msdfs_proxy(ctx, c, share,
540 &newserver, &newshare,
541 /* FIXME: cli_check_msdfs_proxy() does
542 not support smbc_smb_encrypt_level type */
543 context->internal->smb_encryption_level ?
544 true : false,
545 *pp_username,
546 *pp_password,
547 *pp_workgroup)) {
548 cli_shutdown(c);
549 srv = SMBC_server_internal(ctx, context, connect_if_not_found,
550 newserver, newshare, pp_workgroup,
551 pp_username, pp_password, in_cache);
552 TALLOC_FREE(newserver);
553 TALLOC_FREE(newshare);
554 return srv;
555 }
556
557 /* must be a normal share */
558
559 status = cli_tcon_andx(c, share, "?????", *pp_password,
560 strlen(*pp_password)+1);
561 if (!NT_STATUS_IS_OK(status)) {
562 errno = map_errno_from_nt_status(status);
563 cli_shutdown(c);
564 return NULL;
565 }
566
567 DEBUG(4,(" tconx ok\n"));
568
569 /* Determine if this share supports case sensitivity */
570 if (is_ipc) {
571 DEBUG(4, ("IPC$ so ignore case sensitivity\n"));
572 } else if (!NT_STATUS_IS_OK(cli_get_fs_attr_info(c, &fs_attrs))) {
573 DEBUG(4, ("Could not retrieve case sensitivity flag: %s.\n",
574 cli_errstr(c)));
575
576 /*
577 * We can't determine the case sensitivity of the share. We
578 * have no choice but to use the user-specified case
579 * sensitivity setting.
580 */
581 if (smbc_getOptionCaseSensitive(context)) {
582 cli_set_case_sensitive(c, True);
583 } else {
584 cli_set_case_sensitive(c, False);
585 }
586 } else {
587 DEBUG(4, ("Case sensitive: %s\n",
588 (fs_attrs & FILE_CASE_SENSITIVE_SEARCH
589 ? "True"
590 : "False")));
591 cli_set_case_sensitive(c,
592 (fs_attrs & FILE_CASE_SENSITIVE_SEARCH
593 ? True
594 : False));
595 }
596
597 if (context->internal->smb_encryption_level) {
598 /* Attempt UNIX smb encryption. */
599 if (!NT_STATUS_IS_OK(cli_force_encryption(c,
600 username_used,
601 *pp_password,
602 *pp_workgroup))) {
603
604 /*
605 * context->smb_encryption_level == 1
606 * means don't fail if encryption can't be negotiated,
607 * == 2 means fail if encryption can't be negotiated.
608 */
609
610 DEBUG(4,(" SMB encrypt failed\n"));
611
612 if (context->internal->smb_encryption_level == 2) {
613 cli_shutdown(c);
614 errno = EPERM;
615 return NULL;
616 }
617 }
618 DEBUG(4,(" SMB encrypt ok\n"));
619 }
620
621 /*
622 * Ok, we have got a nice connection
623 * Let's allocate a server structure.
624 */
625
626 srv = SMB_MALLOC_P(SMBCSRV);
627 if (!srv) {
628 cli_shutdown(c);
629 errno = ENOMEM;
630 return NULL;
631 }
632
633 ZERO_STRUCTP(srv);
634 srv->cli = c;
635 srv->dev = (dev_t)(str_checksum(server) ^ str_checksum(share));
636 srv->no_pathinfo = False;
637 srv->no_pathinfo2 = False;
638 srv->no_nt_session = False;
639
640 done:
641 if (!pp_workgroup || !*pp_workgroup || !**pp_workgroup) {
642 workgroup = talloc_strdup(ctx, smbc_getWorkgroup(context));
643 } else {
644 workgroup = *pp_workgroup;
645 }
646 if(!workgroup) {
647 return NULL;
648 }
649
650 /* set the credentials to make DFS work */
651 smbc_set_credentials_with_fallback(context,
652 workgroup,
653 *pp_username,
654 *pp_password);
655
656 return srv;
657 }
658
659 SMBCSRV *
660 SMBC_server(TALLOC_CTX *ctx,
661 SMBCCTX *context,
662 bool connect_if_not_found,
663 const char *server,
664 const char *share,
665 char **pp_workgroup,
666 char **pp_username,
667 char **pp_password)
668 {
669 SMBCSRV *srv=NULL;
670 bool in_cache = false;
671
672 srv = SMBC_server_internal(ctx, context, connect_if_not_found,
673 server, share, pp_workgroup,
674 pp_username, pp_password, &in_cache);
675
676 if (!srv) {
677 return NULL;
678 }
679 if (in_cache) {
680 return srv;
681 }
682
683 /* Now add it to the cache (internal or external) */
684 /* Let the cache function set errno if it wants to */
685 errno = 0;
686 if (smbc_getFunctionAddCachedServer(context)(context, srv,
687 server, share,
688 *pp_workgroup,
689 *pp_username)) {
690 int saved_errno = errno;
691 DEBUG(3, (" Failed to add server to cache\n"));
692 errno = saved_errno;
693 if (errno == 0) {
694 errno = ENOMEM;
695 }
696 SAFE_FREE(srv);
697 return NULL;
698 }
699
700 DEBUG(2, ("Server connect ok: //%s/%s: %p\n",
701 server, share, srv));
702
703 DLIST_ADD(context->internal->servers, srv);
704 return srv;
705 }
706
707 /*
708 * Connect to a server for getting/setting attributes, possibly on an existing
709 * connection. This works similarly to SMBC_server().
710 */
711 SMBCSRV *
712 SMBC_attr_server(TALLOC_CTX *ctx,
713 SMBCCTX *context,
714 const char *server,
715 const char *share,
716 char **pp_workgroup,
717 char **pp_username,
718 char **pp_password)
719 {
720 int flags;
721 struct sockaddr_storage ss;
722 struct cli_state *ipc_cli = NULL;
723 struct rpc_pipe_client *pipe_hnd = NULL;
724 NTSTATUS nt_status;
725 SMBCSRV *srv=NULL;
726 SMBCSRV *ipc_srv=NULL;
727
728 /*
729 * Use srv->cli->desthost and srv->cli->share instead of
730 * server and share below to connect to the actual share,
731 * i.e., a normal share or a referred share from
732 * 'msdfs proxy' share.
733 */
734 srv = SMBC_server(ctx, context, true, server, share,
735 pp_workgroup, pp_username, pp_password);
736 if (!srv) {
737 return NULL;
738 }
739 server = srv->cli->desthost;
740 share = srv->cli->share;
741
742 /*
743 * See if we've already created this special connection. Reference
744 * our "special" share name '*IPC$', which is an impossible real share
745 * name due to the leading asterisk.
746 */
747 ipc_srv = SMBC_find_server(ctx, context, server, "*IPC$",
748 pp_workgroup, pp_username, pp_password);
749 if (!ipc_srv) {
750
751 /* We didn't find a cached connection. Get the password */
752 if (!*pp_password || (*pp_password)[0] == '\0') {
753 /* ... then retrieve it now. */
754 SMBC_call_auth_fn(ctx, context, server, share,
755 pp_workgroup,
756 pp_username,
757 pp_password);
758 if (!*pp_workgroup || !*pp_username || !*pp_password) {
759 errno = ENOMEM;
760 return NULL;
761 }
762 }
763
764 flags = 0;
765 if (smbc_getOptionUseKerberos(context)) {
766 flags |= CLI_FULL_CONNECTION_USE_KERBEROS;
767 }
768 if (smbc_getOptionUseCCache(context)) {
769 flags |= CLI_FULL_CONNECTION_USE_CCACHE;
770 }
771
772 zero_sockaddr(&ss);
773 nt_status = cli_full_connection(&ipc_cli,
774 global_myname(), server,
775 &ss, 0, "IPC$", "?????",
776 *pp_username,
777 *pp_workgroup,
778 *pp_password,
779 flags,
780 Undefined, NULL);
781 if (! NT_STATUS_IS_OK(nt_status)) {
782 DEBUG(1,("cli_full_connection failed! (%s)\n",
783 nt_errstr(nt_status)));
784 errno = ENOTSUP;
785 return NULL;
786 }
787
788 if (context->internal->smb_encryption_level) {
789 /* Attempt UNIX smb encryption. */
790 if (!NT_STATUS_IS_OK(cli_force_encryption(ipc_cli,
791 *pp_username,
792 *pp_password,
793 *pp_workgroup))) {
794
795 /*
796 * context->smb_encryption_level ==
797 * 1 means don't fail if encryption can't be
798 * negotiated, == 2 means fail if encryption
799 * can't be negotiated.
800 */
801
802 DEBUG(4,(" SMB encrypt failed on IPC$\n"));
803
804 if (context->internal->smb_encryption_level == 2) {
805 cli_shutdown(ipc_cli);
806 errno = EPERM;
807 return NULL;
808 }
809 }
810 DEBUG(4,(" SMB encrypt ok on IPC$\n"));
811 }
812
813 ipc_srv = SMB_MALLOC_P(SMBCSRV);
814 if (!ipc_srv) {
815 errno = ENOMEM;
816 cli_shutdown(ipc_cli);
817 return NULL;
818 }
819
820 ZERO_STRUCTP(ipc_srv);
821 ipc_srv->cli = ipc_cli;
822
823 nt_status = cli_rpc_pipe_open_noauth(
824 ipc_srv->cli, &ndr_table_lsarpc.syntax_id, &pipe_hnd);
825 if (!NT_STATUS_IS_OK(nt_status)) {
826 DEBUG(1, ("cli_nt_session_open fail!\n"));
827 errno = ENOTSUP;
828 cli_shutdown(ipc_srv->cli);
829 free(ipc_srv);
830 return NULL;
831 }
832
833 /*
834 * Some systems don't support
835 * SEC_FLAG_MAXIMUM_ALLOWED, but NT sends 0x2000000
836 * so we might as well do it too.
837 */
838
839 nt_status = rpccli_lsa_open_policy(
840 pipe_hnd,
841 talloc_tos(),
842 True,
843 GENERIC_EXECUTE_ACCESS,
844 &ipc_srv->pol);
845
846 if (!NT_STATUS_IS_OK(nt_status)) {
847 errno = SMBC_errno(context, ipc_srv->cli);
848 cli_shutdown(ipc_srv->cli);
849 return NULL;
850 }
851
852 /* now add it to the cache (internal or external) */
853
854 errno = 0; /* let cache function set errno if it likes */
855 if (smbc_getFunctionAddCachedServer(context)(context, ipc_srv,
856 server,
857 "*IPC$",
858 *pp_workgroup,
859 *pp_username)) {
860 DEBUG(3, (" Failed to add server to cache\n"));
861 if (errno == 0) {
862 errno = ENOMEM;
863 }
864 cli_shutdown(ipc_srv->cli);
865 free(ipc_srv);
866 return NULL;
867 }
868
869 DLIST_ADD(context->internal->servers, ipc_srv);
870 }
871
872 return ipc_srv;
873 }
reg import