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ntlmssp: Make the ntlmssp.h from source3/ a common header
[Samba/ekacnet.git] / source3 / libsmb / clifsinfo.c
blob2274df45855cf60fdb46bf9629827693c2a01d8a
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 "../libcli/auth/spnego.h"
23 #include "../libcli/auth/ntlmssp.h"
24
25 /****************************************************************************
26 Get UNIX extensions version info.
27 ****************************************************************************/
28
29 struct cli_unix_extensions_version_state {
30 struct cli_state *cli;
31 uint16_t setup[1];
32 uint8_t param[2];
33 uint16_t major, minor;
34 uint32_t caplow, caphigh;
35 };
36
37 static void cli_unix_extensions_version_done(struct tevent_req *subreq);
38
39 struct tevent_req *cli_unix_extensions_version_send(TALLOC_CTX *mem_ctx,
40 struct tevent_context *ev,
41 struct cli_state *cli)
42 {
43 struct tevent_req *req, *subreq;
44 struct cli_unix_extensions_version_state *state;
45
46 req = tevent_req_create(mem_ctx, &state,
47 struct cli_unix_extensions_version_state);
48 if (req == NULL) {
49 return NULL;
50 }
51 state->cli = cli;
52 SSVAL(state->setup, 0, TRANSACT2_QFSINFO);
53 SSVAL(state->param, 0, SMB_QUERY_CIFS_UNIX_INFO);
54
55 subreq = cli_trans_send(state, ev, cli, SMBtrans2,
56 NULL, 0, 0, 0,
57 state->setup, 1, 0,
58 state->param, 2, 0,
59 NULL, 0, 560);
60 if (tevent_req_nomem(subreq, req)) {
61 return tevent_req_post(req, ev);
62 }
63 tevent_req_set_callback(subreq, cli_unix_extensions_version_done, req);
64 return req;
65 }
66
67 static void cli_unix_extensions_version_done(struct tevent_req *subreq)
68 {
69 struct tevent_req *req = tevent_req_callback_data(
70 subreq, struct tevent_req);
71 struct cli_unix_extensions_version_state *state = tevent_req_data(
72 req, struct cli_unix_extensions_version_state);
73 uint8_t *data;
74 uint32_t num_data;
75 NTSTATUS status;
76
77 status = cli_trans_recv(subreq, state, NULL, 0, NULL, NULL, 0, NULL,
78 &data, 12, &num_data);
79 TALLOC_FREE(subreq);
80 if (!NT_STATUS_IS_OK(status)) {
81 tevent_req_nterror(req, status);
82 return;
83 }
84
85 state->major = SVAL(data, 0);
86 state->minor = SVAL(data, 2);
87 state->caplow = IVAL(data, 4);
88 state->caphigh = IVAL(data, 8);
89 TALLOC_FREE(data);
90 tevent_req_done(req);
91 }
92
93 NTSTATUS cli_unix_extensions_version_recv(struct tevent_req *req,
94 uint16_t *pmajor, uint16_t *pminor,
95 uint32_t *pcaplow,
96 uint32_t *pcaphigh)
97 {
98 struct cli_unix_extensions_version_state *state = tevent_req_data(
99 req, struct cli_unix_extensions_version_state);
100 NTSTATUS status;
101
102 if (tevent_req_is_nterror(req, &status)) {
103 return status;
104 }
105 *pmajor = state->major;
106 *pminor = state->minor;
107 *pcaplow = state->caplow;
108 *pcaphigh = state->caphigh;
109 state->cli->server_posix_capabilities = *pcaplow;
110 return NT_STATUS_OK;
111 }
112
113 NTSTATUS cli_unix_extensions_version(struct cli_state *cli, uint16 *pmajor,
114 uint16 *pminor, uint32 *pcaplow,
115 uint32 *pcaphigh)
116 {
117 TALLOC_CTX *frame = talloc_stackframe();
118 struct event_context *ev;
119 struct tevent_req *req;
120 NTSTATUS status = NT_STATUS_OK;
121
122 if (cli_has_async_calls(cli)) {
123 /*
124 * Can't use sync call while an async call is in flight
125 */
126 status = NT_STATUS_INVALID_PARAMETER;
127 goto fail;
128 }
129
130 ev = event_context_init(frame);
131 if (ev == NULL) {
132 status = NT_STATUS_NO_MEMORY;
133 goto fail;
134 }
135
136 req = cli_unix_extensions_version_send(frame, ev, cli);
137 if (req == NULL) {
138 status = NT_STATUS_NO_MEMORY;
139 goto fail;
140 }
141
142 if (!tevent_req_poll(req, ev)) {
143 status = map_nt_error_from_unix(errno);
144 goto fail;
145 }
146
147 status = cli_unix_extensions_version_recv(req, pmajor, pminor, pcaplow,
148 pcaphigh);
149 fail:
150 TALLOC_FREE(frame);
151 if (!NT_STATUS_IS_OK(status)) {
152 cli_set_error(cli, status);
153 }
154 return status;
155 }
156
157 /****************************************************************************
158 Set UNIX extensions capabilities.
159 ****************************************************************************/
160
161 struct cli_set_unix_extensions_capabilities_state {
162 struct cli_state *cli;
163 uint16_t setup[1];
164 uint8_t param[4];
165 uint8_t data[12];
166 };
167
168 static void cli_set_unix_extensions_capabilities_done(
169 struct tevent_req *subreq);
170
171 struct tevent_req *cli_set_unix_extensions_capabilities_send(
172 TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct cli_state *cli,
173 uint16_t major, uint16_t minor, uint32_t caplow, uint32_t caphigh)
174 {
175 struct tevent_req *req, *subreq;
176 struct cli_set_unix_extensions_capabilities_state *state;
177
178 req = tevent_req_create(
179 mem_ctx, &state,
180 struct cli_set_unix_extensions_capabilities_state);
181 if (req == NULL) {
182 return NULL;
183 }
184
185 state->cli = cli;
186 SSVAL(state->setup+0, 0, TRANSACT2_SETFSINFO);
187
188 SSVAL(state->param, 0, 0);
189 SSVAL(state->param, 2, SMB_SET_CIFS_UNIX_INFO);
190
191 SSVAL(state->data, 0, major);
192 SSVAL(state->data, 2, minor);
193 SIVAL(state->data, 4, caplow);
194 SIVAL(state->data, 8, caphigh);
195
196 subreq = cli_trans_send(state, ev, cli, SMBtrans2,
197 NULL, 0, 0, 0,
198 state->setup, 1, 0,
199 state->param, 4, 0,
200 state->data, 12, 560);
201 if (tevent_req_nomem(subreq, req)) {
202 return tevent_req_post(req, ev);
203 }
204 tevent_req_set_callback(
205 subreq, cli_set_unix_extensions_capabilities_done, req);
206 return req;
207 }
208
209 static void cli_set_unix_extensions_capabilities_done(
210 struct tevent_req *subreq)
211 {
212 struct tevent_req *req = tevent_req_callback_data(
213 subreq, struct tevent_req);
214 struct cli_set_unix_extensions_capabilities_state *state = tevent_req_data(
215 req, struct cli_set_unix_extensions_capabilities_state);
216
217 NTSTATUS status = cli_trans_recv(subreq, NULL, NULL, 0, NULL,
218 NULL, 0, NULL, NULL, 0, NULL);
219 if (NT_STATUS_IS_OK(status)) {
220 state->cli->requested_posix_capabilities = IVAL(state->data, 4);
221 }
222 tevent_req_simple_finish_ntstatus(subreq, status);
223 }
224
225 NTSTATUS cli_set_unix_extensions_capabilities_recv(struct tevent_req *req)
226 {
227 return tevent_req_simple_recv_ntstatus(req);
228 }
229
230 NTSTATUS cli_set_unix_extensions_capabilities(struct cli_state *cli,
231 uint16 major, uint16 minor,
232 uint32 caplow, uint32 caphigh)
233 {
234 struct tevent_context *ev;
235 struct tevent_req *req;
236 NTSTATUS status = NT_STATUS_NO_MEMORY;
237
238 if (cli_has_async_calls(cli)) {
239 return NT_STATUS_INVALID_PARAMETER;
240 }
241 ev = tevent_context_init(talloc_tos());
242 if (ev == NULL) {
243 goto fail;
244 }
245 req = cli_set_unix_extensions_capabilities_send(
246 ev, ev, cli, major, minor, caplow, caphigh);
247 if (req == NULL) {
248 goto fail;
249 }
250 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
251 goto fail;
252 }
253 status = cli_set_unix_extensions_capabilities_recv(req);
254 fail:
255 TALLOC_FREE(ev);
256 if (!NT_STATUS_IS_OK(status)) {
257 cli_set_error(cli, status);
258 }
259 return status;
260 }
261
262 struct cli_get_fs_attr_info_state {
263 uint16_t setup[1];
264 uint8_t param[2];
265 uint32_t fs_attr;
266 };
267
268 static void cli_get_fs_attr_info_done(struct tevent_req *subreq);
269
270 struct tevent_req *cli_get_fs_attr_info_send(TALLOC_CTX *mem_ctx,
271 struct tevent_context *ev,
272 struct cli_state *cli)
273 {
274 struct tevent_req *subreq, *req;
275 struct cli_get_fs_attr_info_state *state;
276
277 req = tevent_req_create(mem_ctx, &state,
278 struct cli_get_fs_attr_info_state);
279 if (req == NULL) {
280 return NULL;
281 }
282 SSVAL(state->setup+0, 0, TRANSACT2_QFSINFO);
283 SSVAL(state->param+0, 0, SMB_QUERY_FS_ATTRIBUTE_INFO);
284
285 subreq = cli_trans_send(state, ev, cli, SMBtrans2,
286 NULL, 0, 0, 0,
287 state->setup, 1, 0,
288 state->param, 2, 0,
289 NULL, 0, 560);
290 if (tevent_req_nomem(subreq, req)) {
291 return tevent_req_post(req, ev);
292 }
293 tevent_req_set_callback(subreq, cli_get_fs_attr_info_done, req);
294 return req;
295 }
296
297 static void cli_get_fs_attr_info_done(struct tevent_req *subreq)
298 {
299 struct tevent_req *req = tevent_req_callback_data(
300 subreq, struct tevent_req);
301 struct cli_get_fs_attr_info_state *state = tevent_req_data(
302 req, struct cli_get_fs_attr_info_state);
303 uint8_t *data;
304 uint32_t num_data;
305 NTSTATUS status;
306
307 status = cli_trans_recv(subreq, talloc_tos(), NULL, 0, NULL,
308 NULL, 0, NULL, &data, 12, &num_data);
309 TALLOC_FREE(subreq);
310 if (!NT_STATUS_IS_OK(status)) {
311 tevent_req_nterror(req, status);
312 return;
313 }
314 state->fs_attr = IVAL(data, 0);
315 TALLOC_FREE(data);
316 tevent_req_done(req);
317 }
318
319 NTSTATUS cli_get_fs_attr_info_recv(struct tevent_req *req, uint32_t *fs_attr)
320 {
321 struct cli_get_fs_attr_info_state *state = tevent_req_data(
322 req, struct cli_get_fs_attr_info_state);
323 NTSTATUS status;
324
325 if (tevent_req_is_nterror(req, &status)) {
326 return status;
327 }
328 *fs_attr = state->fs_attr;
329 return NT_STATUS_OK;
330 }
331
332 NTSTATUS cli_get_fs_attr_info(struct cli_state *cli, uint32_t *fs_attr)
333 {
334 struct tevent_context *ev;
335 struct tevent_req *req;
336 NTSTATUS status = NT_STATUS_NO_MEMORY;
337
338 if (cli_has_async_calls(cli)) {
339 return NT_STATUS_INVALID_PARAMETER;
340 }
341 ev = tevent_context_init(talloc_tos());
342 if (ev == NULL) {
343 goto fail;
344 }
345 req = cli_get_fs_attr_info_send(ev, ev, cli);
346 if (req == NULL) {
347 goto fail;
348 }
349 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
350 goto fail;
351 }
352 status = cli_get_fs_attr_info_recv(req, fs_attr);
353 fail:
354 TALLOC_FREE(ev);
355 if (!NT_STATUS_IS_OK(status)) {
356 cli_set_error(cli, status);
357 }
358 return status;
359 }
360
361 NTSTATUS cli_get_fs_volume_info(struct cli_state *cli, fstring volume_name,
362 uint32 *pserial_number, time_t *pdate)
363 {
364 NTSTATUS status;
365 uint16 setup[1];
366 uint8_t param[2];
367 uint8_t *rdata;
368 uint32_t rdata_count;
369 unsigned int nlen;
370
371 SSVAL(setup, 0, TRANSACT2_QFSINFO);
372 SSVAL(param,0,SMB_QUERY_FS_VOLUME_INFO);
373
374 status = cli_trans(talloc_tos(), cli, SMBtrans2,
375 NULL, 0, 0, 0,
376 setup, 1, 0,
377 param, 2, 0,
378 NULL, 0, 560,
379 NULL, 0, NULL,
380 NULL, 0, NULL,
381 &rdata, 10, &rdata_count);
382 if (!NT_STATUS_IS_OK(status)) {
383 return status;
384 }
385
386 if (pdate) {
387 struct timespec ts;
388 ts = interpret_long_date((char *)rdata);
389 *pdate = ts.tv_sec;
390 }
391 if (pserial_number) {
392 *pserial_number = IVAL(rdata,8);
393 }
394 nlen = IVAL(rdata,12);
395 clistr_pull(cli->inbuf, volume_name, rdata + 18, sizeof(fstring),
396 nlen, STR_UNICODE);
397
398 /* todo: but not yet needed
399 * return the other stuff
400 */
401
402 TALLOC_FREE(rdata);
403 return NT_STATUS_OK;
404 }
405
406 bool cli_get_fs_full_size_info(struct cli_state *cli,
407 uint64_t *total_allocation_units,
408 uint64_t *caller_allocation_units,
409 uint64_t *actual_allocation_units,
410 uint64_t *sectors_per_allocation_unit,
411 uint64_t *bytes_per_sector)
412 {
413 bool ret = False;
414 uint16 setup;
415 char param[2];
416 char *rparam=NULL, *rdata=NULL;
417 unsigned int rparam_count=0, rdata_count=0;
418
419 setup = TRANSACT2_QFSINFO;
420
421 SSVAL(param,0,SMB_FS_FULL_SIZE_INFORMATION);
422
423 if (!cli_send_trans(cli, SMBtrans2,
424 NULL,
425 0, 0,
426 &setup, 1, 0,
427 param, 2, 0,
428 NULL, 0, 560)) {
429 goto cleanup;
430 }
431
432 if (!cli_receive_trans(cli, SMBtrans2,
433 &rparam, &rparam_count,
434 &rdata, &rdata_count)) {
435 goto cleanup;
436 }
437
438 if (cli_is_error(cli)) {
439 ret = False;
440 goto cleanup;
441 } else {
442 ret = True;
443 }
444
445 if (rdata_count != 32) {
446 goto cleanup;
447 }
448
449 if (total_allocation_units) {
450 *total_allocation_units = BIG_UINT(rdata, 0);
451 }
452 if (caller_allocation_units) {
453 *caller_allocation_units = BIG_UINT(rdata,8);
454 }
455 if (actual_allocation_units) {
456 *actual_allocation_units = BIG_UINT(rdata,16);
457 }
458 if (sectors_per_allocation_unit) {
459 *sectors_per_allocation_unit = IVAL(rdata,24);
460 }
461 if (bytes_per_sector) {
462 *bytes_per_sector = IVAL(rdata,28);
463 }
464
465 cleanup:
466 SAFE_FREE(rparam);
467 SAFE_FREE(rdata);
468
469 return ret;
470 }
471
472 bool cli_get_posix_fs_info(struct cli_state *cli,
473 uint32 *optimal_transfer_size,
474 uint32 *block_size,
475 uint64_t *total_blocks,
476 uint64_t *blocks_available,
477 uint64_t *user_blocks_available,
478 uint64_t *total_file_nodes,
479 uint64_t *free_file_nodes,
480 uint64_t *fs_identifier)
481 {
482 bool ret = False;
483 uint16 setup;
484 char param[2];
485 char *rparam=NULL, *rdata=NULL;
486 unsigned int rparam_count=0, rdata_count=0;
487
488 setup = TRANSACT2_QFSINFO;
489
490 SSVAL(param,0,SMB_QUERY_POSIX_FS_INFO);
491
492 if (!cli_send_trans(cli, SMBtrans2,
493 NULL,
494 0, 0,
495 &setup, 1, 0,
496 param, 2, 0,
497 NULL, 0, 560)) {
498 goto cleanup;
499 }
500
501 if (!cli_receive_trans(cli, SMBtrans2,
502 &rparam, &rparam_count,
503 &rdata, &rdata_count)) {
504 goto cleanup;
505 }
506
507 if (cli_is_error(cli)) {
508 ret = False;
509 goto cleanup;
510 } else {
511 ret = True;
512 }
513
514 if (rdata_count != 56) {
515 goto cleanup;
516 }
517
518 if (optimal_transfer_size) {
519 *optimal_transfer_size = IVAL(rdata, 0);
520 }
521 if (block_size) {
522 *block_size = IVAL(rdata,4);
523 }
524 if (total_blocks) {
525 *total_blocks = BIG_UINT(rdata,8);
526 }
527 if (blocks_available) {
528 *blocks_available = BIG_UINT(rdata,16);
529 }
530 if (user_blocks_available) {
531 *user_blocks_available = BIG_UINT(rdata,24);
532 }
533 if (total_file_nodes) {
534 *total_file_nodes = BIG_UINT(rdata,32);
535 }
536 if (free_file_nodes) {
537 *free_file_nodes = BIG_UINT(rdata,40);
538 }
539 if (fs_identifier) {
540 *fs_identifier = BIG_UINT(rdata,48);
541 }
542
543 cleanup:
544 SAFE_FREE(rparam);
545 SAFE_FREE(rdata);
546
547 return ret;
548 }
549
550
551 /******************************************************************************
552 Send/receive the request encryption blob.
553 ******************************************************************************/
554
555 static NTSTATUS enc_blob_send_receive(struct cli_state *cli, DATA_BLOB *in, DATA_BLOB *out, DATA_BLOB *param_out)
556 {
557 uint16 setup;
558 char param[4];
559 char *rparam=NULL, *rdata=NULL;
560 unsigned int rparam_count=0, rdata_count=0;
561 NTSTATUS status = NT_STATUS_OK;
562
563 setup = TRANSACT2_SETFSINFO;
564
565 SSVAL(param,0,0);
566 SSVAL(param,2,SMB_REQUEST_TRANSPORT_ENCRYPTION);
567
568 if (!cli_send_trans(cli, SMBtrans2,
569 NULL,
570 0, 0,
571 &setup, 1, 0,
572 param, 4, 0,
573 (char *)in->data, in->length, CLI_BUFFER_SIZE)) {
574 status = cli_nt_error(cli);
575 goto out;
576 }
577
578 if (!cli_receive_trans(cli, SMBtrans2,
579 &rparam, &rparam_count,
580 &rdata, &rdata_count)) {
581 status = cli_nt_error(cli);
582 goto out;
583 }
584
585 if (cli_is_error(cli)) {
586 status = cli_nt_error(cli);
587 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
588 goto out;
589 }
590 }
591
592 *out = data_blob(rdata, rdata_count);
593 *param_out = data_blob(rparam, rparam_count);
594
595 out:
596
597 SAFE_FREE(rparam);
598 SAFE_FREE(rdata);
599 return status;
600 }
601
602 /******************************************************************************
603 Make a client state struct.
604 ******************************************************************************/
605
606 static struct smb_trans_enc_state *make_cli_enc_state(enum smb_trans_enc_type smb_enc_type)
607 {
608 struct smb_trans_enc_state *es = NULL;
609 es = SMB_MALLOC_P(struct smb_trans_enc_state);
610 if (!es) {
611 return NULL;
612 }
613 ZERO_STRUCTP(es);
614 es->smb_enc_type = smb_enc_type;
615
616 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
617 if (smb_enc_type == SMB_TRANS_ENC_GSS) {
618 es->s.gss_state = SMB_MALLOC_P(struct smb_tran_enc_state_gss);
619 if (!es->s.gss_state) {
620 SAFE_FREE(es);
621 return NULL;
622 }
623 ZERO_STRUCTP(es->s.gss_state);
624 }
625 #endif
626 return es;
627 }
628
629 /******************************************************************************
630 Start a raw ntlmssp encryption.
631 ******************************************************************************/
632
633 NTSTATUS cli_raw_ntlm_smb_encryption_start(struct cli_state *cli,
634 const char *user,
635 const char *pass,
636 const char *domain)
637 {
638 DATA_BLOB blob_in = data_blob_null;
639 DATA_BLOB blob_out = data_blob_null;
640 DATA_BLOB param_out = data_blob_null;
641 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
642 struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_NTLM);
643
644 if (!es) {
645 return NT_STATUS_NO_MEMORY;
646 }
647 status = ntlmssp_client_start(NULL,
648 global_myname(),
649 lp_workgroup(),
650 lp_client_ntlmv2_auth(),
651 &es->s.ntlmssp_state);
652 if (!NT_STATUS_IS_OK(status)) {
653 goto fail;
654 }
655
656 ntlmssp_want_feature(es->s.ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
657 es->s.ntlmssp_state->neg_flags |= (NTLMSSP_NEGOTIATE_SIGN|NTLMSSP_NEGOTIATE_SEAL);
658
659 if (!NT_STATUS_IS_OK(status = ntlmssp_set_username(es->s.ntlmssp_state, user))) {
660 goto fail;
661 }
662 if (!NT_STATUS_IS_OK(status = ntlmssp_set_domain(es->s.ntlmssp_state, domain))) {
663 goto fail;
664 }
665 if (!NT_STATUS_IS_OK(status = ntlmssp_set_password(es->s.ntlmssp_state, pass))) {
666 goto fail;
667 }
668
669 do {
670 status = ntlmssp_update(es->s.ntlmssp_state, blob_in, &blob_out);
671 data_blob_free(&blob_in);
672 data_blob_free(&param_out);
673 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(status)) {
674 NTSTATUS trans_status = enc_blob_send_receive(cli,
675 &blob_out,
676 &blob_in,
677 &param_out);
678 if (!NT_STATUS_EQUAL(trans_status,
679 NT_STATUS_MORE_PROCESSING_REQUIRED) &&
680 !NT_STATUS_IS_OK(trans_status)) {
681 status = trans_status;
682 } else {
683 if (param_out.length == 2) {
684 es->enc_ctx_num = SVAL(param_out.data, 0);
685 }
686 }
687 }
688 data_blob_free(&blob_out);
689 } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
690
691 data_blob_free(&blob_in);
692
693 if (NT_STATUS_IS_OK(status)) {
694 /* Replace the old state, if any. */
695 if (cli->trans_enc_state) {
696 common_free_encryption_state(&cli->trans_enc_state);
697 }
698 cli->trans_enc_state = es;
699 cli->trans_enc_state->enc_on = True;
700 es = NULL;
701 }
702
703 fail:
704
705 common_free_encryption_state(&es);
706 return status;
707 }
708
709 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
710
711 #ifndef SMB_GSS_REQUIRED_FLAGS
712 #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)
713 #endif
714
715 /******************************************************************************
716 Get client gss blob to send to a server.
717 ******************************************************************************/
718
719 static NTSTATUS make_cli_gss_blob(struct smb_trans_enc_state *es,
720 const char *service,
721 const char *host,
722 NTSTATUS status_in,
723 DATA_BLOB spnego_blob_in,
724 DATA_BLOB *p_blob_out)
725 {
726 const char *krb_mechs[] = {OID_KERBEROS5, NULL};
727 OM_uint32 ret;
728 OM_uint32 min;
729 gss_name_t srv_name;
730 gss_buffer_desc input_name;
731 gss_buffer_desc *p_tok_in;
732 gss_buffer_desc tok_out, tok_in;
733 DATA_BLOB blob_out = data_blob_null;
734 DATA_BLOB blob_in = data_blob_null;
735 char *host_princ_s = NULL;
736 OM_uint32 ret_flags = 0;
737 NTSTATUS status = NT_STATUS_OK;
738
739 gss_OID_desc nt_hostbased_service =
740 {10, CONST_DISCARD(char *,"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04")};
741
742 memset(&tok_out, '\0', sizeof(tok_out));
743
744 /* Get a ticket for the service@host */
745 if (asprintf(&host_princ_s, "%s@%s", service, host) == -1) {
746 return NT_STATUS_NO_MEMORY;
747 }
748
749 input_name.value = host_princ_s;
750 input_name.length = strlen(host_princ_s) + 1;
751
752 ret = gss_import_name(&min,
753 &input_name,
754 &nt_hostbased_service,
755 &srv_name);
756
757 if (ret != GSS_S_COMPLETE) {
758 SAFE_FREE(host_princ_s);
759 return map_nt_error_from_gss(ret, min);
760 }
761
762 if (spnego_blob_in.length == 0) {
763 p_tok_in = GSS_C_NO_BUFFER;
764 } else {
765 /* Remove the SPNEGO wrapper */
766 if (!spnego_parse_auth_response(spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
767 status = NT_STATUS_UNSUCCESSFUL;
768 goto fail;
769 }
770 tok_in.value = blob_in.data;
771 tok_in.length = blob_in.length;
772 p_tok_in = &tok_in;
773 }
774
775 ret = gss_init_sec_context(&min,
776 GSS_C_NO_CREDENTIAL, /* Use our default cred. */
777 &es->s.gss_state->gss_ctx,
778 srv_name,
779 GSS_C_NO_OID, /* default OID. */
780 GSS_C_MUTUAL_FLAG | GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG | GSS_C_DELEG_FLAG,
781 GSS_C_INDEFINITE, /* requested ticket lifetime. */
782 NULL, /* no channel bindings */
783 p_tok_in,
784 NULL, /* ignore mech type */
785 &tok_out,
786 &ret_flags,
787 NULL); /* ignore time_rec */
788
789 status = map_nt_error_from_gss(ret, min);
790 if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
791 ADS_STATUS adss = ADS_ERROR_GSS(ret, min);
792 DEBUG(10,("make_cli_gss_blob: gss_init_sec_context failed with %s\n",
793 ads_errstr(adss)));
794 goto fail;
795 }
796
797 if ((ret_flags & SMB_GSS_REQUIRED_FLAGS) != SMB_GSS_REQUIRED_FLAGS) {
798 status = NT_STATUS_ACCESS_DENIED;
799 }
800
801 blob_out = data_blob(tok_out.value, tok_out.length);
802
803 /* Wrap in an SPNEGO wrapper */
804 *p_blob_out = gen_negTokenTarg(krb_mechs, blob_out);
805
806 fail:
807
808 data_blob_free(&blob_out);
809 data_blob_free(&blob_in);
810 SAFE_FREE(host_princ_s);
811 gss_release_name(&min, &srv_name);
812 if (tok_out.value) {
813 gss_release_buffer(&min, &tok_out);
814 }
815 return status;
816 }
817
818 /******************************************************************************
819 Start a SPNEGO gssapi encryption context.
820 ******************************************************************************/
821
822 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
823 {
824 DATA_BLOB blob_recv = data_blob_null;
825 DATA_BLOB blob_send = data_blob_null;
826 DATA_BLOB param_out = data_blob_null;
827 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
828 fstring fqdn;
829 const char *servicename;
830 struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_GSS);
831
832 if (!es) {
833 return NT_STATUS_NO_MEMORY;
834 }
835
836 name_to_fqdn(fqdn, cli->desthost);
837 strlower_m(fqdn);
838
839 servicename = "cifs";
840 status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
841 if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
842 servicename = "host";
843 status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
844 if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
845 goto fail;
846 }
847 }
848
849 do {
850 data_blob_free(&blob_recv);
851 status = enc_blob_send_receive(cli, &blob_send, &blob_recv, &param_out);
852 if (param_out.length == 2) {
853 es->enc_ctx_num = SVAL(param_out.data, 0);
854 }
855 data_blob_free(&blob_send);
856 status = make_cli_gss_blob(es, servicename, fqdn, status, blob_recv, &blob_send);
857 } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
858 data_blob_free(&blob_recv);
859
860 if (NT_STATUS_IS_OK(status)) {
861 /* Replace the old state, if any. */
862 if (cli->trans_enc_state) {
863 common_free_encryption_state(&cli->trans_enc_state);
864 }
865 cli->trans_enc_state = es;
866 cli->trans_enc_state->enc_on = True;
867 es = NULL;
868 }
869
870 fail:
871
872 common_free_encryption_state(&es);
873 return status;
874 }
875 #else
876 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
877 {
878 return NT_STATUS_NOT_SUPPORTED;
879 }
880 #endif
881
882 /********************************************************************
883 Ensure a connection is encrypted.
884 ********************************************************************/
885
886 NTSTATUS cli_force_encryption(struct cli_state *c,
887 const char *username,
888 const char *password,
889 const char *domain)
890 {
891 uint16 major, minor;
892 uint32 caplow, caphigh;
893 NTSTATUS status;
894
895 if (!SERVER_HAS_UNIX_CIFS(c)) {
896 return NT_STATUS_NOT_SUPPORTED;
897 }
898
899 status = cli_unix_extensions_version(c, &major, &minor, &caplow,
900 &caphigh);
901 if (!NT_STATUS_IS_OK(status)) {
902 DEBUG(10, ("cli_force_encryption: cli_unix_extensions_version "
903 "returned %s\n", nt_errstr(status)));
904 return NT_STATUS_UNKNOWN_REVISION;
905 }
906
907 if (!(caplow & CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP)) {
908 return NT_STATUS_UNSUPPORTED_COMPRESSION;
909 }
910
911 if (c->use_kerberos) {
912 return cli_gss_smb_encryption_start(c);
913 }
914 return cli_raw_ntlm_smb_encryption_start(c,
915 username,
916 password,
917 domain);
918 }