source: trunk/server/source3/libsmb/clifsinfo.c@ 750

Last change on this file since 750 was 745, checked in by Silvan Scherrer, 13 years ago

Samba Server: updated trunk to 3.6.0
File size: 23.9 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 FS info functions
4 Copyright (C) Stefan (metze) Metzmacher 2003
5 Copyright (C) Jeremy Allison 2007
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19*/
20
21#include "includes.h"
22#include "libsmb/libsmb.h"
23#include "../libcli/auth/spnego.h"
24#include "../libcli/auth/ntlmssp.h"
25#include "../lib/util/tevent_ntstatus.h"
26#include "async_smb.h"
27#include "smb_crypt.h"
28#include "trans2.h"
29
30/****************************************************************************
31 Get UNIX extensions version info.
32****************************************************************************/
33
34struct cli_unix_extensions_version_state {
35 struct cli_state *cli;
36 uint16_t setup[1];
37 uint8_t param[2];
38 uint16_t major, minor;
39 uint32_t caplow, caphigh;
40};
41
42static void cli_unix_extensions_version_done(struct tevent_req *subreq);
43
44struct tevent_req *cli_unix_extensions_version_send(TALLOC_CTX *mem_ctx,
45 struct tevent_context *ev,
46 struct cli_state *cli)
47{
48 struct tevent_req *req, *subreq;
49 struct cli_unix_extensions_version_state *state;
50
51 req = tevent_req_create(mem_ctx, &state,
52 struct cli_unix_extensions_version_state);
53 if (req == NULL) {
54 return NULL;
55 }
56 state->cli = cli;
57 SSVAL(state->setup, 0, TRANSACT2_QFSINFO);
58 SSVAL(state->param, 0, SMB_QUERY_CIFS_UNIX_INFO);
59
60 subreq = cli_trans_send(state, ev, cli, SMBtrans2,
61 NULL, 0, 0, 0,
62 state->setup, 1, 0,
63 state->param, 2, 0,
64 NULL, 0, 560);
65 if (tevent_req_nomem(subreq, req)) {
66 return tevent_req_post(req, ev);
67 }
68 tevent_req_set_callback(subreq, cli_unix_extensions_version_done, req);
69 return req;
70}
71
72static void cli_unix_extensions_version_done(struct tevent_req *subreq)
73{
74 struct tevent_req *req = tevent_req_callback_data(
75 subreq, struct tevent_req);
76 struct cli_unix_extensions_version_state *state = tevent_req_data(
77 req, struct cli_unix_extensions_version_state);
78 uint8_t *data;
79 uint32_t num_data;
80 NTSTATUS status;
81
82 status = cli_trans_recv(subreq, state, NULL, NULL, 0, NULL,
83 NULL, 0, NULL, &data, 12, &num_data);
84 TALLOC_FREE(subreq);
85 if (!NT_STATUS_IS_OK(status)) {
86 tevent_req_nterror(req, status);
87 return;
88 }
89
90 state->major = SVAL(data, 0);
91 state->minor = SVAL(data, 2);
92 state->caplow = IVAL(data, 4);
93 state->caphigh = IVAL(data, 8);
94 TALLOC_FREE(data);
95 tevent_req_done(req);
96}
97
98NTSTATUS cli_unix_extensions_version_recv(struct tevent_req *req,
99 uint16_t *pmajor, uint16_t *pminor,
100 uint32_t *pcaplow,
101 uint32_t *pcaphigh)
102{
103 struct cli_unix_extensions_version_state *state = tevent_req_data(
104 req, struct cli_unix_extensions_version_state);
105 NTSTATUS status;
106
107 if (tevent_req_is_nterror(req, &status)) {
108 return status;
109 }
110 *pmajor = state->major;
111 *pminor = state->minor;
112 *pcaplow = state->caplow;
113 *pcaphigh = state->caphigh;
114 state->cli->server_posix_capabilities = *pcaplow;
115 return NT_STATUS_OK;
116}
117
118NTSTATUS cli_unix_extensions_version(struct cli_state *cli, uint16 *pmajor,
119 uint16 *pminor, uint32 *pcaplow,
120 uint32 *pcaphigh)
121{
122 TALLOC_CTX *frame = talloc_stackframe();
123 struct event_context *ev;
124 struct tevent_req *req;
125 NTSTATUS status = NT_STATUS_OK;
126
127 if (cli_has_async_calls(cli)) {
128 /*
129 * Can't use sync call while an async call is in flight
130 */
131 status = NT_STATUS_INVALID_PARAMETER;
132 goto fail;
133 }
134
135 ev = event_context_init(frame);
136 if (ev == NULL) {
137 status = NT_STATUS_NO_MEMORY;
138 goto fail;
139 }
140
141 req = cli_unix_extensions_version_send(frame, ev, cli);
142 if (req == NULL) {
143 status = NT_STATUS_NO_MEMORY;
144 goto fail;
145 }
146
147 if (!tevent_req_poll(req, ev)) {
148 status = map_nt_error_from_unix(errno);
149 goto fail;
150 }
151
152 status = cli_unix_extensions_version_recv(req, pmajor, pminor, pcaplow,
153 pcaphigh);
154 fail:
155 TALLOC_FREE(frame);
156 if (!NT_STATUS_IS_OK(status)) {
157 cli_set_error(cli, status);
158 }
159 return status;
160}
161
162/****************************************************************************
163 Set UNIX extensions capabilities.
164****************************************************************************/
165
166struct cli_set_unix_extensions_capabilities_state {
167 struct cli_state *cli;
168 uint16_t setup[1];
169 uint8_t param[4];
170 uint8_t data[12];
171};
172
173static void cli_set_unix_extensions_capabilities_done(
174 struct tevent_req *subreq);
175
176struct tevent_req *cli_set_unix_extensions_capabilities_send(
177 TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct cli_state *cli,
178 uint16_t major, uint16_t minor, uint32_t caplow, uint32_t caphigh)
179{
180 struct tevent_req *req, *subreq;
181 struct cli_set_unix_extensions_capabilities_state *state;
182
183 req = tevent_req_create(
184 mem_ctx, &state,
185 struct cli_set_unix_extensions_capabilities_state);
186 if (req == NULL) {
187 return NULL;
188 }
189
190 state->cli = cli;
191 SSVAL(state->setup+0, 0, TRANSACT2_SETFSINFO);
192
193 SSVAL(state->param, 0, 0);
194 SSVAL(state->param, 2, SMB_SET_CIFS_UNIX_INFO);
195
196 SSVAL(state->data, 0, major);
197 SSVAL(state->data, 2, minor);
198 SIVAL(state->data, 4, caplow);
199 SIVAL(state->data, 8, caphigh);
200
201 subreq = cli_trans_send(state, ev, cli, SMBtrans2,
202 NULL, 0, 0, 0,
203 state->setup, 1, 0,
204 state->param, 4, 0,
205 state->data, 12, 560);
206 if (tevent_req_nomem(subreq, req)) {
207 return tevent_req_post(req, ev);
208 }
209 tevent_req_set_callback(
210 subreq, cli_set_unix_extensions_capabilities_done, req);
211 return req;
212}
213
214static void cli_set_unix_extensions_capabilities_done(
215 struct tevent_req *subreq)
216{
217 struct tevent_req *req = tevent_req_callback_data(
218 subreq, struct tevent_req);
219 struct cli_set_unix_extensions_capabilities_state *state = tevent_req_data(
220 req, struct cli_set_unix_extensions_capabilities_state);
221
222 NTSTATUS status = cli_trans_recv(subreq, NULL, NULL, NULL, 0, NULL,
223 NULL, 0, NULL, NULL, 0, NULL);
224 if (NT_STATUS_IS_OK(status)) {
225 state->cli->requested_posix_capabilities = IVAL(state->data, 4);
226 }
227 tevent_req_simple_finish_ntstatus(subreq, status);
228}
229
230NTSTATUS cli_set_unix_extensions_capabilities_recv(struct tevent_req *req)
231{
232 return tevent_req_simple_recv_ntstatus(req);
233}
234
235NTSTATUS cli_set_unix_extensions_capabilities(struct cli_state *cli,
236 uint16 major, uint16 minor,
237 uint32 caplow, uint32 caphigh)
238{
239 struct tevent_context *ev;
240 struct tevent_req *req;
241 NTSTATUS status = NT_STATUS_NO_MEMORY;
242
243 if (cli_has_async_calls(cli)) {
244 return NT_STATUS_INVALID_PARAMETER;
245 }
246 ev = tevent_context_init(talloc_tos());
247 if (ev == NULL) {
248 goto fail;
249 }
250 req = cli_set_unix_extensions_capabilities_send(
251 ev, ev, cli, major, minor, caplow, caphigh);
252 if (req == NULL) {
253 goto fail;
254 }
255 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
256 goto fail;
257 }
258 status = cli_set_unix_extensions_capabilities_recv(req);
259fail:
260 TALLOC_FREE(ev);
261 if (!NT_STATUS_IS_OK(status)) {
262 cli_set_error(cli, status);
263 }
264 return status;
265}
266
267struct cli_get_fs_attr_info_state {
268 uint16_t setup[1];
269 uint8_t param[2];
270 uint32_t fs_attr;
271};
272
273static void cli_get_fs_attr_info_done(struct tevent_req *subreq);
274
275struct tevent_req *cli_get_fs_attr_info_send(TALLOC_CTX *mem_ctx,
276 struct tevent_context *ev,
277 struct cli_state *cli)
278{
279 struct tevent_req *subreq, *req;
280 struct cli_get_fs_attr_info_state *state;
281
282 req = tevent_req_create(mem_ctx, &state,
283 struct cli_get_fs_attr_info_state);
284 if (req == NULL) {
285 return NULL;
286 }
287 SSVAL(state->setup+0, 0, TRANSACT2_QFSINFO);
288 SSVAL(state->param+0, 0, SMB_QUERY_FS_ATTRIBUTE_INFO);
289
290 subreq = cli_trans_send(state, ev, cli, SMBtrans2,
291 NULL, 0, 0, 0,
292 state->setup, 1, 0,
293 state->param, 2, 0,
294 NULL, 0, 560);
295 if (tevent_req_nomem(subreq, req)) {
296 return tevent_req_post(req, ev);
297 }
298 tevent_req_set_callback(subreq, cli_get_fs_attr_info_done, req);
299 return req;
300}
301
302static void cli_get_fs_attr_info_done(struct tevent_req *subreq)
303{
304 struct tevent_req *req = tevent_req_callback_data(
305 subreq, struct tevent_req);
306 struct cli_get_fs_attr_info_state *state = tevent_req_data(
307 req, struct cli_get_fs_attr_info_state);
308 uint8_t *data;
309 uint32_t num_data;
310 NTSTATUS status;
311
312 status = cli_trans_recv(subreq, talloc_tos(), NULL, NULL, 0, NULL,
313 NULL, 0, NULL, &data, 12, &num_data);
314 TALLOC_FREE(subreq);
315 if (!NT_STATUS_IS_OK(status)) {
316 tevent_req_nterror(req, status);
317 return;
318 }
319 state->fs_attr = IVAL(data, 0);
320 TALLOC_FREE(data);
321 tevent_req_done(req);
322}
323
324NTSTATUS cli_get_fs_attr_info_recv(struct tevent_req *req, uint32_t *fs_attr)
325{
326 struct cli_get_fs_attr_info_state *state = tevent_req_data(
327 req, struct cli_get_fs_attr_info_state);
328 NTSTATUS status;
329
330 if (tevent_req_is_nterror(req, &status)) {
331 return status;
332 }
333 *fs_attr = state->fs_attr;
334 return NT_STATUS_OK;
335}
336
337NTSTATUS cli_get_fs_attr_info(struct cli_state *cli, uint32_t *fs_attr)
338{
339 struct tevent_context *ev;
340 struct tevent_req *req;
341 NTSTATUS status = NT_STATUS_NO_MEMORY;
342
343 if (cli_has_async_calls(cli)) {
344 return NT_STATUS_INVALID_PARAMETER;
345 }
346 ev = tevent_context_init(talloc_tos());
347 if (ev == NULL) {
348 goto fail;
349 }
350 req = cli_get_fs_attr_info_send(ev, ev, cli);
351 if (req == NULL) {
352 goto fail;
353 }
354 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
355 goto fail;
356 }
357 status = cli_get_fs_attr_info_recv(req, fs_attr);
358fail:
359 TALLOC_FREE(ev);
360 if (!NT_STATUS_IS_OK(status)) {
361 cli_set_error(cli, status);
362 }
363 return status;
364}
365
366NTSTATUS cli_get_fs_volume_info(struct cli_state *cli, fstring volume_name,
367 uint32 *pserial_number, time_t *pdate)
368{
369 NTSTATUS status;
370 uint16 setup[1];
371 uint8_t param[2];
372 uint8_t *rdata;
373 uint32_t rdata_count;
374 unsigned int nlen;
375
376 SSVAL(setup, 0, TRANSACT2_QFSINFO);
377 SSVAL(param,0,SMB_QUERY_FS_VOLUME_INFO);
378
379 status = cli_trans(talloc_tos(), cli, SMBtrans2,
380 NULL, 0, 0, 0,
381 setup, 1, 0,
382 param, 2, 0,
383 NULL, 0, 560,
384 NULL,
385 NULL, 0, NULL,
386 NULL, 0, NULL,
387 &rdata, 10, &rdata_count);
388 if (!NT_STATUS_IS_OK(status)) {
389 return status;
390 }
391
392 if (pdate) {
393 struct timespec ts;
394 ts = interpret_long_date((char *)rdata);
395 *pdate = ts.tv_sec;
396 }
397 if (pserial_number) {
398 *pserial_number = IVAL(rdata,8);
399 }
400 nlen = IVAL(rdata,12);
401 clistr_pull(cli->inbuf, volume_name, rdata + 18, sizeof(fstring),
402 nlen, STR_UNICODE);
403
404 /* todo: but not yet needed
405 * return the other stuff
406 */
407
408 TALLOC_FREE(rdata);
409 return NT_STATUS_OK;
410}
411
412NTSTATUS cli_get_fs_full_size_info(struct cli_state *cli,
413 uint64_t *total_allocation_units,
414 uint64_t *caller_allocation_units,
415 uint64_t *actual_allocation_units,
416 uint64_t *sectors_per_allocation_unit,
417 uint64_t *bytes_per_sector)
418{
419 uint16 setup[1];
420 uint8_t param[2];
421 uint8_t *rdata = NULL;
422 uint32_t rdata_count;
423 NTSTATUS status;
424
425 SSVAL(setup, 0, TRANSACT2_QFSINFO);
426 SSVAL(param, 0, SMB_FS_FULL_SIZE_INFORMATION);
427
428 status = cli_trans(talloc_tos(), cli, SMBtrans2,
429 NULL, 0, 0, 0,
430 setup, 1, 0, /* setup */
431 param, 2, 0, /* param */
432 NULL, 0, 560, /* data */
433 NULL,
434 NULL, 0, NULL, /* rsetup */
435 NULL, 0, NULL, /* rparam */
436 &rdata, 32, &rdata_count); /* rdata */
437 if (!NT_STATUS_IS_OK(status)) {
438 goto fail;
439 }
440
441 if (total_allocation_units) {
442 *total_allocation_units = BIG_UINT(rdata, 0);
443 }
444 if (caller_allocation_units) {
445 *caller_allocation_units = BIG_UINT(rdata,8);
446 }
447 if (actual_allocation_units) {
448 *actual_allocation_units = BIG_UINT(rdata,16);
449 }
450 if (sectors_per_allocation_unit) {
451 *sectors_per_allocation_unit = IVAL(rdata,24);
452 }
453 if (bytes_per_sector) {
454 *bytes_per_sector = IVAL(rdata,28);
455 }
456
457fail:
458 TALLOC_FREE(rdata);
459 return status;
460}
461
462NTSTATUS cli_get_posix_fs_info(struct cli_state *cli,
463 uint32 *optimal_transfer_size,
464 uint32 *block_size,
465 uint64_t *total_blocks,
466 uint64_t *blocks_available,
467 uint64_t *user_blocks_available,
468 uint64_t *total_file_nodes,
469 uint64_t *free_file_nodes,
470 uint64_t *fs_identifier)
471{
472 uint16 setup[1];
473 uint8_t param[2];
474 uint8_t *rdata = NULL;
475 uint32_t rdata_count;
476 NTSTATUS status;
477
478 SSVAL(setup, 0, TRANSACT2_QFSINFO);
479 SSVAL(param,0,SMB_QUERY_POSIX_FS_INFO);
480
481 status = cli_trans(talloc_tos(), cli, SMBtrans2, NULL, 0, 0, 0,
482 setup, 1, 0,
483 param, 2, 0,
484 NULL, 0, 560,
485 NULL,
486 NULL, 0, NULL, /* rsetup */
487 NULL, 0, NULL, /* rparam */
488 &rdata, 56, &rdata_count);
489 if (!NT_STATUS_IS_OK(status)) {
490 return status;
491 }
492
493 if (optimal_transfer_size) {
494 *optimal_transfer_size = IVAL(rdata, 0);
495 }
496 if (block_size) {
497 *block_size = IVAL(rdata,4);
498 }
499 if (total_blocks) {
500 *total_blocks = BIG_UINT(rdata,8);
501 }
502 if (blocks_available) {
503 *blocks_available = BIG_UINT(rdata,16);
504 }
505 if (user_blocks_available) {
506 *user_blocks_available = BIG_UINT(rdata,24);
507 }
508 if (total_file_nodes) {
509 *total_file_nodes = BIG_UINT(rdata,32);
510 }
511 if (free_file_nodes) {
512 *free_file_nodes = BIG_UINT(rdata,40);
513 }
514 if (fs_identifier) {
515 *fs_identifier = BIG_UINT(rdata,48);
516 }
517 return NT_STATUS_OK;
518}
519
520
521/******************************************************************************
522 Send/receive the request encryption blob.
523******************************************************************************/
524
525static NTSTATUS enc_blob_send_receive(struct cli_state *cli, DATA_BLOB *in, DATA_BLOB *out, DATA_BLOB *param_out)
526{
527 uint16_t setup[1];
528 uint8_t param[4];
529 uint8_t *rparam=NULL, *rdata=NULL;
530 uint32_t num_rparam, num_rdata;
531 NTSTATUS status;
532
533 SSVAL(setup+0, 0, TRANSACT2_SETFSINFO);
534 SSVAL(param,0,0);
535 SSVAL(param,2,SMB_REQUEST_TRANSPORT_ENCRYPTION);
536
537 status = cli_trans(talloc_tos(), cli, SMBtrans2, NULL, 0, 0, 0,
538 setup, 1, 0,
539 param, 4, 2,
540 (uint8_t *)in->data, in->length, CLI_BUFFER_SIZE,
541 NULL, /* recv_flags */
542 NULL, 0, NULL, /* rsetup */
543 &rparam, 0, &num_rparam,
544 &rdata, 0, &num_rdata);
545
546 if (!NT_STATUS_IS_OK(status) &&
547 !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
548 return status;
549 }
550
551 *out = data_blob(rdata, num_rdata);
552 *param_out = data_blob(rparam, num_rparam);
553
554 TALLOC_FREE(rparam);
555 TALLOC_FREE(rdata);
556 return status;
557}
558
559/******************************************************************************
560 Make a client state struct.
561******************************************************************************/
562
563static struct smb_trans_enc_state *make_cli_enc_state(enum smb_trans_enc_type smb_enc_type)
564{
565 struct smb_trans_enc_state *es = NULL;
566 es = SMB_MALLOC_P(struct smb_trans_enc_state);
567 if (!es) {
568 return NULL;
569 }
570 ZERO_STRUCTP(es);
571 es->smb_enc_type = smb_enc_type;
572
573#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
574 if (smb_enc_type == SMB_TRANS_ENC_GSS) {
575 es->s.gss_state = SMB_MALLOC_P(struct smb_tran_enc_state_gss);
576 if (!es->s.gss_state) {
577 SAFE_FREE(es);
578 return NULL;
579 }
580 ZERO_STRUCTP(es->s.gss_state);
581 }
582#endif
583 return es;
584}
585
586/******************************************************************************
587 Start a raw ntlmssp encryption.
588******************************************************************************/
589
590NTSTATUS cli_raw_ntlm_smb_encryption_start(struct cli_state *cli,
591 const char *user,
592 const char *pass,
593 const char *domain)
594{
595 DATA_BLOB blob_in = data_blob_null;
596 DATA_BLOB blob_out = data_blob_null;
597 DATA_BLOB param_out = data_blob_null;
598 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
599 struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_NTLM);
600
601 if (!es) {
602 return NT_STATUS_NO_MEMORY;
603 }
604 status = ntlmssp_client_start(NULL,
605 global_myname(),
606 lp_workgroup(),
607 lp_client_ntlmv2_auth(),
608 &es->s.ntlmssp_state);
609 if (!NT_STATUS_IS_OK(status)) {
610 goto fail;
611 }
612
613 ntlmssp_want_feature(es->s.ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
614 es->s.ntlmssp_state->neg_flags |= (NTLMSSP_NEGOTIATE_SIGN|NTLMSSP_NEGOTIATE_SEAL);
615
616 if (!NT_STATUS_IS_OK(status = ntlmssp_set_username(es->s.ntlmssp_state, user))) {
617 goto fail;
618 }
619 if (!NT_STATUS_IS_OK(status = ntlmssp_set_domain(es->s.ntlmssp_state, domain))) {
620 goto fail;
621 }
622 if (!NT_STATUS_IS_OK(status = ntlmssp_set_password(es->s.ntlmssp_state, pass))) {
623 goto fail;
624 }
625
626 do {
627 status = ntlmssp_update(es->s.ntlmssp_state, blob_in, &blob_out);
628 data_blob_free(&blob_in);
629 data_blob_free(&param_out);
630 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(status)) {
631 NTSTATUS trans_status = enc_blob_send_receive(cli,
632 &blob_out,
633 &blob_in,
634 &param_out);
635 if (!NT_STATUS_EQUAL(trans_status,
636 NT_STATUS_MORE_PROCESSING_REQUIRED) &&
637 !NT_STATUS_IS_OK(trans_status)) {
638 status = trans_status;
639 } else {
640 if (param_out.length == 2) {
641 es->enc_ctx_num = SVAL(param_out.data, 0);
642 }
643 }
644 }
645 data_blob_free(&blob_out);
646 } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
647
648 data_blob_free(&blob_in);
649
650 if (NT_STATUS_IS_OK(status)) {
651 /* Replace the old state, if any. */
652 if (cli->trans_enc_state) {
653 common_free_encryption_state(&cli->trans_enc_state);
654 }
655 cli->trans_enc_state = es;
656 cli->trans_enc_state->enc_on = True;
657 es = NULL;
658 }
659
660 fail:
661
662 common_free_encryption_state(&es);
663 return status;
664}
665
666#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
667
668#ifndef SMB_GSS_REQUIRED_FLAGS
669#define SMB_GSS_REQUIRED_FLAGS (GSS_C_CONF_FLAG|GSS_C_INTEG_FLAG|GSS_C_MUTUAL_FLAG|GSS_C_REPLAY_FLAG|GSS_C_SEQUENCE_FLAG)
670#endif
671
672/******************************************************************************
673 Get client gss blob to send to a server.
674******************************************************************************/
675
676static NTSTATUS make_cli_gss_blob(TALLOC_CTX *ctx,
677 struct smb_trans_enc_state *es,
678 const char *service,
679 const char *host,
680 NTSTATUS status_in,
681 DATA_BLOB spnego_blob_in,
682 DATA_BLOB *p_blob_out)
683{
684 const char *krb_mechs[] = {OID_KERBEROS5, NULL};
685 OM_uint32 ret;
686 OM_uint32 min;
687 gss_name_t srv_name;
688 gss_buffer_desc input_name;
689 gss_buffer_desc *p_tok_in;
690 gss_buffer_desc tok_out, tok_in;
691 DATA_BLOB blob_out = data_blob_null;
692 DATA_BLOB blob_in = data_blob_null;
693 char *host_princ_s = NULL;
694 OM_uint32 ret_flags = 0;
695 NTSTATUS status = NT_STATUS_OK;
696
697 gss_OID_desc nt_hostbased_service =
698 {10, CONST_DISCARD(char *,"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04")};
699
700 memset(&tok_out, '\0', sizeof(tok_out));
701
702 /* Get a ticket for the service@host */
703 if (asprintf(&host_princ_s, "%s@%s", service, host) == -1) {
704 return NT_STATUS_NO_MEMORY;
705 }
706
707 input_name.value = host_princ_s;
708 input_name.length = strlen(host_princ_s) + 1;
709
710 ret = gss_import_name(&min,
711 &input_name,
712 &nt_hostbased_service,
713 &srv_name);
714
715 if (ret != GSS_S_COMPLETE) {
716 SAFE_FREE(host_princ_s);
717 return map_nt_error_from_gss(ret, min);
718 }
719
720 if (spnego_blob_in.length == 0) {
721 p_tok_in = GSS_C_NO_BUFFER;
722 } else {
723 /* Remove the SPNEGO wrapper */
724 if (!spnego_parse_auth_response(ctx, spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
725 status = NT_STATUS_UNSUCCESSFUL;
726 goto fail;
727 }
728 tok_in.value = blob_in.data;
729 tok_in.length = blob_in.length;
730 p_tok_in = &tok_in;
731 }
732
733 ret = gss_init_sec_context(&min,
734 GSS_C_NO_CREDENTIAL, /* Use our default cred. */
735 &es->s.gss_state->gss_ctx,
736 srv_name,
737 GSS_C_NO_OID, /* default OID. */
738 GSS_C_MUTUAL_FLAG | GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG | GSS_C_DELEG_FLAG,
739 GSS_C_INDEFINITE, /* requested ticket lifetime. */
740 NULL, /* no channel bindings */
741 p_tok_in,
742 NULL, /* ignore mech type */
743 &tok_out,
744 &ret_flags,
745 NULL); /* ignore time_rec */
746
747 status = map_nt_error_from_gss(ret, min);
748 if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
749 ADS_STATUS adss = ADS_ERROR_GSS(ret, min);
750 DEBUG(10,("make_cli_gss_blob: gss_init_sec_context failed with %s\n",
751 ads_errstr(adss)));
752 goto fail;
753 }
754
755 if ((ret_flags & SMB_GSS_REQUIRED_FLAGS) != SMB_GSS_REQUIRED_FLAGS) {
756 status = NT_STATUS_ACCESS_DENIED;
757 }
758
759 blob_out = data_blob_talloc(ctx, tok_out.value, tok_out.length);
760
761 /* Wrap in an SPNEGO wrapper */
762 *p_blob_out = spnego_gen_negTokenInit(ctx, krb_mechs, &blob_out, NULL);
763
764 fail:
765
766 data_blob_free(&blob_out);
767 data_blob_free(&blob_in);
768 SAFE_FREE(host_princ_s);
769 gss_release_name(&min, &srv_name);
770 if (tok_out.value) {
771 gss_release_buffer(&min, &tok_out);
772 }
773 return status;
774}
775
776/******************************************************************************
777 Start a SPNEGO gssapi encryption context.
778******************************************************************************/
779
780NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
781{
782 DATA_BLOB blob_recv = data_blob_null;
783 DATA_BLOB blob_send = data_blob_null;
784 DATA_BLOB param_out = data_blob_null;
785 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
786 fstring fqdn;
787 const char *servicename;
788 struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_GSS);
789
790 if (!es) {
791 return NT_STATUS_NO_MEMORY;
792 }
793
794 name_to_fqdn(fqdn, cli->desthost);
795 strlower_m(fqdn);
796
797 servicename = "cifs";
798 status = make_cli_gss_blob(talloc_tos(), es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
799 if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
800 servicename = "host";
801 status = make_cli_gss_blob(talloc_tos(), es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
802 if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
803 goto fail;
804 }
805 }
806
807 do {
808 data_blob_free(&blob_recv);
809 status = enc_blob_send_receive(cli, &blob_send, &blob_recv, &param_out);
810 if (param_out.length == 2) {
811 es->enc_ctx_num = SVAL(param_out.data, 0);
812 }
813 data_blob_free(&blob_send);
814 status = make_cli_gss_blob(talloc_tos(), es, servicename, fqdn, status, blob_recv, &blob_send);
815 } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
816 data_blob_free(&blob_recv);
817
818 if (NT_STATUS_IS_OK(status)) {
819 /* Replace the old state, if any. */
820 if (cli->trans_enc_state) {
821 common_free_encryption_state(&cli->trans_enc_state);
822 }
823 cli->trans_enc_state = es;
824 cli->trans_enc_state->enc_on = True;
825 es = NULL;
826 }
827
828 fail:
829
830 common_free_encryption_state(&es);
831 return status;
832}
833#else
834NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
835{
836 return NT_STATUS_NOT_SUPPORTED;
837}
838#endif
839
840/********************************************************************
841 Ensure a connection is encrypted.
842********************************************************************/
843
844NTSTATUS cli_force_encryption(struct cli_state *c,
845 const char *username,
846 const char *password,
847 const char *domain)
848{
849 uint16 major, minor;
850 uint32 caplow, caphigh;
851 NTSTATUS status;
852
853 if (!SERVER_HAS_UNIX_CIFS(c)) {
854 return NT_STATUS_NOT_SUPPORTED;
855 }
856
857 status = cli_unix_extensions_version(c, &major, &minor, &caplow,
858 &caphigh);
859 if (!NT_STATUS_IS_OK(status)) {
860 DEBUG(10, ("cli_force_encryption: cli_unix_extensions_version "
861 "returned %s\n", nt_errstr(status)));
862 return NT_STATUS_UNKNOWN_REVISION;
863 }
864
865 if (!(caplow & CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP)) {
866 return NT_STATUS_UNSUPPORTED_COMPRESSION;
867 }
868
869 if (c->use_kerberos) {
870 return cli_gss_smb_encryption_start(c);
871 }
872 return cli_raw_ntlm_smb_encryption_start(c,
873 username,
874 password,
875 domain);
876}
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