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drs_utils.py: Remove tab characters.
[Samba/gebeck_regimport.git] / source3 / libsmb / clifsinfo.c
blob9005d4dac4aa24991ef2ff590aab997855e9cc2b
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 #include "ntlmssp_wrap.h"
30
31 /****************************************************************************
32 Get UNIX extensions version info.
33 ****************************************************************************/
34
35 struct cli_unix_extensions_version_state {
36 struct cli_state *cli;
37 uint16_t setup[1];
38 uint8_t param[2];
39 uint16_t major, minor;
40 uint32_t caplow, caphigh;
41 };
42
43 static void cli_unix_extensions_version_done(struct tevent_req *subreq);
44
45 struct tevent_req *cli_unix_extensions_version_send(TALLOC_CTX *mem_ctx,
46 struct tevent_context *ev,
47 struct cli_state *cli)
48 {
49 struct tevent_req *req, *subreq;
50 struct cli_unix_extensions_version_state *state;
51
52 req = tevent_req_create(mem_ctx, &state,
53 struct cli_unix_extensions_version_state);
54 if (req == NULL) {
55 return NULL;
56 }
57 state->cli = cli;
58 SSVAL(state->setup, 0, TRANSACT2_QFSINFO);
59 SSVAL(state->param, 0, SMB_QUERY_CIFS_UNIX_INFO);
60
61 subreq = cli_trans_send(state, ev, cli, SMBtrans2,
62 NULL, 0, 0, 0,
63 state->setup, 1, 0,
64 state->param, 2, 0,
65 NULL, 0, 560);
66 if (tevent_req_nomem(subreq, req)) {
67 return tevent_req_post(req, ev);
68 }
69 tevent_req_set_callback(subreq, cli_unix_extensions_version_done, req);
70 return req;
71 }
72
73 static void cli_unix_extensions_version_done(struct tevent_req *subreq)
74 {
75 struct tevent_req *req = tevent_req_callback_data(
76 subreq, struct tevent_req);
77 struct cli_unix_extensions_version_state *state = tevent_req_data(
78 req, struct cli_unix_extensions_version_state);
79 uint8_t *data;
80 uint32_t num_data;
81 NTSTATUS status;
82
83 status = cli_trans_recv(subreq, state, NULL, NULL, 0, NULL,
84 NULL, 0, NULL, &data, 12, &num_data);
85 TALLOC_FREE(subreq);
86 if (!NT_STATUS_IS_OK(status)) {
87 tevent_req_nterror(req, status);
88 return;
89 }
90
91 state->major = SVAL(data, 0);
92 state->minor = SVAL(data, 2);
93 state->caplow = IVAL(data, 4);
94 state->caphigh = IVAL(data, 8);
95 TALLOC_FREE(data);
96 tevent_req_done(req);
97 }
98
99 NTSTATUS cli_unix_extensions_version_recv(struct tevent_req *req,
100 uint16_t *pmajor, uint16_t *pminor,
101 uint32_t *pcaplow,
102 uint32_t *pcaphigh)
103 {
104 struct cli_unix_extensions_version_state *state = tevent_req_data(
105 req, struct cli_unix_extensions_version_state);
106 NTSTATUS status;
107
108 if (tevent_req_is_nterror(req, &status)) {
109 return status;
110 }
111 *pmajor = state->major;
112 *pminor = state->minor;
113 *pcaplow = state->caplow;
114 *pcaphigh = state->caphigh;
115 state->cli->server_posix_capabilities = *pcaplow;
116 return NT_STATUS_OK;
117 }
118
119 NTSTATUS cli_unix_extensions_version(struct cli_state *cli, uint16 *pmajor,
120 uint16 *pminor, uint32 *pcaplow,
121 uint32 *pcaphigh)
122 {
123 TALLOC_CTX *frame = talloc_stackframe();
124 struct event_context *ev;
125 struct tevent_req *req;
126 NTSTATUS status = NT_STATUS_OK;
127
128 if (cli_has_async_calls(cli)) {
129 /*
130 * Can't use sync call while an async call is in flight
131 */
132 status = NT_STATUS_INVALID_PARAMETER;
133 goto fail;
134 }
135
136 ev = event_context_init(frame);
137 if (ev == NULL) {
138 status = NT_STATUS_NO_MEMORY;
139 goto fail;
140 }
141
142 req = cli_unix_extensions_version_send(frame, ev, cli);
143 if (req == NULL) {
144 status = NT_STATUS_NO_MEMORY;
145 goto fail;
146 }
147
148 if (!tevent_req_poll(req, ev)) {
149 status = map_nt_error_from_unix(errno);
150 goto fail;
151 }
152
153 status = cli_unix_extensions_version_recv(req, pmajor, pminor, pcaplow,
154 pcaphigh);
155 fail:
156 TALLOC_FREE(frame);
157 return status;
158 }
159
160 /****************************************************************************
161 Set UNIX extensions capabilities.
162 ****************************************************************************/
163
164 struct cli_set_unix_extensions_capabilities_state {
165 struct cli_state *cli;
166 uint16_t setup[1];
167 uint8_t param[4];
168 uint8_t data[12];
169 };
170
171 static void cli_set_unix_extensions_capabilities_done(
172 struct tevent_req *subreq);
173
174 struct tevent_req *cli_set_unix_extensions_capabilities_send(
175 TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct cli_state *cli,
176 uint16_t major, uint16_t minor, uint32_t caplow, uint32_t caphigh)
177 {
178 struct tevent_req *req, *subreq;
179 struct cli_set_unix_extensions_capabilities_state *state;
180
181 req = tevent_req_create(
182 mem_ctx, &state,
183 struct cli_set_unix_extensions_capabilities_state);
184 if (req == NULL) {
185 return NULL;
186 }
187
188 state->cli = cli;
189 SSVAL(state->setup+0, 0, TRANSACT2_SETFSINFO);
190
191 SSVAL(state->param, 0, 0);
192 SSVAL(state->param, 2, SMB_SET_CIFS_UNIX_INFO);
193
194 SSVAL(state->data, 0, major);
195 SSVAL(state->data, 2, minor);
196 SIVAL(state->data, 4, caplow);
197 SIVAL(state->data, 8, caphigh);
198
199 subreq = cli_trans_send(state, ev, cli, SMBtrans2,
200 NULL, 0, 0, 0,
201 state->setup, 1, 0,
202 state->param, 4, 0,
203 state->data, 12, 560);
204 if (tevent_req_nomem(subreq, req)) {
205 return tevent_req_post(req, ev);
206 }
207 tevent_req_set_callback(
208 subreq, cli_set_unix_extensions_capabilities_done, req);
209 return req;
210 }
211
212 static void cli_set_unix_extensions_capabilities_done(
213 struct tevent_req *subreq)
214 {
215 struct tevent_req *req = tevent_req_callback_data(
216 subreq, struct tevent_req);
217 struct cli_set_unix_extensions_capabilities_state *state = tevent_req_data(
218 req, struct cli_set_unix_extensions_capabilities_state);
219
220 NTSTATUS status = cli_trans_recv(subreq, NULL, NULL, NULL, 0, NULL,
221 NULL, 0, NULL, NULL, 0, NULL);
222 if (NT_STATUS_IS_OK(status)) {
223 state->cli->requested_posix_capabilities = IVAL(state->data, 4);
224 }
225 tevent_req_simple_finish_ntstatus(subreq, status);
226 }
227
228 NTSTATUS cli_set_unix_extensions_capabilities_recv(struct tevent_req *req)
229 {
230 return tevent_req_simple_recv_ntstatus(req);
231 }
232
233 NTSTATUS cli_set_unix_extensions_capabilities(struct cli_state *cli,
234 uint16 major, uint16 minor,
235 uint32 caplow, uint32 caphigh)
236 {
237 struct tevent_context *ev;
238 struct tevent_req *req;
239 NTSTATUS status = NT_STATUS_NO_MEMORY;
240
241 if (cli_has_async_calls(cli)) {
242 return NT_STATUS_INVALID_PARAMETER;
243 }
244 ev = tevent_context_init(talloc_tos());
245 if (ev == NULL) {
246 goto fail;
247 }
248 req = cli_set_unix_extensions_capabilities_send(
249 ev, ev, cli, major, minor, caplow, caphigh);
250 if (req == NULL) {
251 goto fail;
252 }
253 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
254 goto fail;
255 }
256 status = cli_set_unix_extensions_capabilities_recv(req);
257 fail:
258 TALLOC_FREE(ev);
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, 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 return status;
356 }
357
358 NTSTATUS cli_get_fs_volume_info(struct cli_state *cli,
359 TALLOC_CTX *mem_ctx,
360 char **_volume_name,
361 uint32_t *pserial_number,
362 time_t *pdate)
363 {
364 NTSTATUS status;
365 uint16_t recv_flags2;
366 uint16_t setup[1];
367 uint8_t param[2];
368 uint8_t *rdata;
369 uint32_t rdata_count;
370 unsigned int nlen;
371 char *volume_name = NULL;
372
373 SSVAL(setup, 0, TRANSACT2_QFSINFO);
374 SSVAL(param,0,SMB_QUERY_FS_VOLUME_INFO);
375
376 status = cli_trans(talloc_tos(), cli, SMBtrans2,
377 NULL, 0, 0, 0,
378 setup, 1, 0,
379 param, 2, 0,
380 NULL, 0, 560,
381 &recv_flags2,
382 NULL, 0, NULL,
383 NULL, 0, NULL,
384 &rdata, 18, &rdata_count);
385 if (!NT_STATUS_IS_OK(status)) {
386 return status;
387 }
388
389 if (pdate) {
390 struct timespec ts;
391 ts = interpret_long_date((char *)rdata);
392 *pdate = ts.tv_sec;
393 }
394 if (pserial_number) {
395 *pserial_number = IVAL(rdata,8);
396 }
397 nlen = IVAL(rdata,12);
398 if (nlen > (rdata_count - 18)) {
399 TALLOC_FREE(rdata);
400 return NT_STATUS_INVALID_NETWORK_RESPONSE;
401 }
402
403 clistr_pull_talloc(mem_ctx,
404 (const char *)rdata,
405 recv_flags2,
406 &volume_name,
407 rdata + 18,
408 nlen, STR_UNICODE);
409 if (volume_name == NULL) {
410 status = map_nt_error_from_unix(errno);
411 TALLOC_FREE(rdata);
412 return status;
413 }
414
415 /* todo: but not yet needed
416 * return the other stuff
417 */
418
419 *_volume_name = volume_name;
420 TALLOC_FREE(rdata);
421 return NT_STATUS_OK;
422 }
423
424 NTSTATUS cli_get_fs_full_size_info(struct cli_state *cli,
425 uint64_t *total_allocation_units,
426 uint64_t *caller_allocation_units,
427 uint64_t *actual_allocation_units,
428 uint64_t *sectors_per_allocation_unit,
429 uint64_t *bytes_per_sector)
430 {
431 uint16 setup[1];
432 uint8_t param[2];
433 uint8_t *rdata = NULL;
434 uint32_t rdata_count;
435 NTSTATUS status;
436
437 SSVAL(setup, 0, TRANSACT2_QFSINFO);
438 SSVAL(param, 0, SMB_FS_FULL_SIZE_INFORMATION);
439
440 status = cli_trans(talloc_tos(), cli, SMBtrans2,
441 NULL, 0, 0, 0,
442 setup, 1, 0, /* setup */
443 param, 2, 0, /* param */
444 NULL, 0, 560, /* data */
445 NULL,
446 NULL, 0, NULL, /* rsetup */
447 NULL, 0, NULL, /* rparam */
448 &rdata, 32, &rdata_count); /* rdata */
449 if (!NT_STATUS_IS_OK(status)) {
450 goto fail;
451 }
452
453 if (total_allocation_units) {
454 *total_allocation_units = BIG_UINT(rdata, 0);
455 }
456 if (caller_allocation_units) {
457 *caller_allocation_units = BIG_UINT(rdata,8);
458 }
459 if (actual_allocation_units) {
460 *actual_allocation_units = BIG_UINT(rdata,16);
461 }
462 if (sectors_per_allocation_unit) {
463 *sectors_per_allocation_unit = IVAL(rdata,24);
464 }
465 if (bytes_per_sector) {
466 *bytes_per_sector = IVAL(rdata,28);
467 }
468
469 fail:
470 TALLOC_FREE(rdata);
471 return status;
472 }
473
474 NTSTATUS cli_get_posix_fs_info(struct cli_state *cli,
475 uint32 *optimal_transfer_size,
476 uint32 *block_size,
477 uint64_t *total_blocks,
478 uint64_t *blocks_available,
479 uint64_t *user_blocks_available,
480 uint64_t *total_file_nodes,
481 uint64_t *free_file_nodes,
482 uint64_t *fs_identifier)
483 {
484 uint16 setup[1];
485 uint8_t param[2];
486 uint8_t *rdata = NULL;
487 uint32_t rdata_count;
488 NTSTATUS status;
489
490 SSVAL(setup, 0, TRANSACT2_QFSINFO);
491 SSVAL(param,0,SMB_QUERY_POSIX_FS_INFO);
492
493 status = cli_trans(talloc_tos(), cli, SMBtrans2, NULL, 0, 0, 0,
494 setup, 1, 0,
495 param, 2, 0,
496 NULL, 0, 560,
497 NULL,
498 NULL, 0, NULL, /* rsetup */
499 NULL, 0, NULL, /* rparam */
500 &rdata, 56, &rdata_count);
501 if (!NT_STATUS_IS_OK(status)) {
502 return status;
503 }
504
505 if (optimal_transfer_size) {
506 *optimal_transfer_size = IVAL(rdata, 0);
507 }
508 if (block_size) {
509 *block_size = IVAL(rdata,4);
510 }
511 if (total_blocks) {
512 *total_blocks = BIG_UINT(rdata,8);
513 }
514 if (blocks_available) {
515 *blocks_available = BIG_UINT(rdata,16);
516 }
517 if (user_blocks_available) {
518 *user_blocks_available = BIG_UINT(rdata,24);
519 }
520 if (total_file_nodes) {
521 *total_file_nodes = BIG_UINT(rdata,32);
522 }
523 if (free_file_nodes) {
524 *free_file_nodes = BIG_UINT(rdata,40);
525 }
526 if (fs_identifier) {
527 *fs_identifier = BIG_UINT(rdata,48);
528 }
529 return NT_STATUS_OK;
530 }
531
532
533 /******************************************************************************
534 Send/receive the request encryption blob.
535 ******************************************************************************/
536
537 static NTSTATUS enc_blob_send_receive(struct cli_state *cli, DATA_BLOB *in, DATA_BLOB *out, DATA_BLOB *param_out)
538 {
539 uint16_t setup[1];
540 uint8_t param[4];
541 uint8_t *rparam=NULL, *rdata=NULL;
542 uint32_t num_rparam, num_rdata;
543 NTSTATUS status;
544
545 SSVAL(setup+0, 0, TRANSACT2_SETFSINFO);
546 SSVAL(param,0,0);
547 SSVAL(param,2,SMB_REQUEST_TRANSPORT_ENCRYPTION);
548
549 status = cli_trans(talloc_tos(), cli, SMBtrans2, NULL, 0, 0, 0,
550 setup, 1, 0,
551 param, 4, 2,
552 (uint8_t *)in->data, in->length, CLI_BUFFER_SIZE,
553 NULL, /* recv_flags */
554 NULL, 0, NULL, /* rsetup */
555 &rparam, 0, &num_rparam,
556 &rdata, 0, &num_rdata);
557
558 if (!NT_STATUS_IS_OK(status) &&
559 !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
560 return status;
561 }
562
563 *out = data_blob(rdata, num_rdata);
564 *param_out = data_blob(rparam, num_rparam);
565
566 TALLOC_FREE(rparam);
567 TALLOC_FREE(rdata);
568 return status;
569 }
570
571 /******************************************************************************
572 Make a client state struct.
573 ******************************************************************************/
574
575 static struct smb_trans_enc_state *make_cli_enc_state(enum smb_trans_enc_type smb_enc_type)
576 {
577 struct smb_trans_enc_state *es = NULL;
578 es = SMB_MALLOC_P(struct smb_trans_enc_state);
579 if (!es) {
580 return NULL;
581 }
582 ZERO_STRUCTP(es);
583 es->smb_enc_type = smb_enc_type;
584
585 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
586 if (smb_enc_type == SMB_TRANS_ENC_GSS) {
587 es->s.gss_state = SMB_MALLOC_P(struct smb_tran_enc_state_gss);
588 if (!es->s.gss_state) {
589 SAFE_FREE(es);
590 return NULL;
591 }
592 ZERO_STRUCTP(es->s.gss_state);
593 }
594 #endif
595 return es;
596 }
597
598 /******************************************************************************
599 Start a raw ntlmssp encryption.
600 ******************************************************************************/
601
602 NTSTATUS cli_raw_ntlm_smb_encryption_start(struct cli_state *cli,
603 const char *user,
604 const char *pass,
605 const char *domain)
606 {
607 DATA_BLOB blob_in = data_blob_null;
608 DATA_BLOB blob_out = data_blob_null;
609 DATA_BLOB param_out = data_blob_null;
610 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
611 struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_NTLM);
612
613 if (!es) {
614 return NT_STATUS_NO_MEMORY;
615 }
616 status = auth_ntlmssp_client_start(NULL,
617 lp_netbios_name(),
618 lp_workgroup(),
619 lp_client_ntlmv2_auth(),
620 &es->s.auth_ntlmssp_state);
621 if (!NT_STATUS_IS_OK(status)) {
622 goto fail;
623 }
624
625 auth_ntlmssp_want_feature(es->s.auth_ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
626 auth_ntlmssp_want_feature(es->s.auth_ntlmssp_state, NTLMSSP_FEATURE_SEAL);
627
628 if (!NT_STATUS_IS_OK(status = auth_ntlmssp_set_username(es->s.auth_ntlmssp_state, user))) {
629 goto fail;
630 }
631 if (!NT_STATUS_IS_OK(status = auth_ntlmssp_set_domain(es->s.auth_ntlmssp_state, domain))) {
632 goto fail;
633 }
634 if (!NT_STATUS_IS_OK(status = auth_ntlmssp_set_password(es->s.auth_ntlmssp_state, pass))) {
635 goto fail;
636 }
637
638 do {
639 status = auth_ntlmssp_update(es->s.auth_ntlmssp_state, es->s.auth_ntlmssp_state,
640 blob_in, &blob_out);
641 data_blob_free(&blob_in);
642 data_blob_free(&param_out);
643 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(status)) {
644 NTSTATUS trans_status = enc_blob_send_receive(cli,
645 &blob_out,
646 &blob_in,
647 &param_out);
648 if (!NT_STATUS_EQUAL(trans_status,
649 NT_STATUS_MORE_PROCESSING_REQUIRED) &&
650 !NT_STATUS_IS_OK(trans_status)) {
651 status = trans_status;
652 } else {
653 if (param_out.length == 2) {
654 es->enc_ctx_num = SVAL(param_out.data, 0);
655 }
656 }
657 }
658 data_blob_free(&blob_out);
659 } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
660
661 data_blob_free(&blob_in);
662
663 if (NT_STATUS_IS_OK(status)) {
664 /* Replace the old state, if any. */
665 if (cli->trans_enc_state) {
666 common_free_encryption_state(&cli->trans_enc_state);
667 }
668 cli->trans_enc_state = es;
669 cli->trans_enc_state->enc_on = True;
670 es = NULL;
671 }
672
673 fail:
674
675 common_free_encryption_state(&es);
676 return status;
677 }
678
679 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
680
681 #ifndef SMB_GSS_REQUIRED_FLAGS
682 #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)
683 #endif
684
685 /******************************************************************************
686 Get client gss blob to send to a server.
687 ******************************************************************************/
688
689 static NTSTATUS make_cli_gss_blob(TALLOC_CTX *ctx,
690 struct smb_trans_enc_state *es,
691 const char *service,
692 const char *host,
693 NTSTATUS status_in,
694 DATA_BLOB spnego_blob_in,
695 DATA_BLOB *p_blob_out)
696 {
697 const char *krb_mechs[] = {OID_KERBEROS5, NULL};
698 OM_uint32 ret;
699 OM_uint32 min;
700 gss_name_t srv_name;
701 gss_buffer_desc input_name;
702 gss_buffer_desc *p_tok_in;
703 gss_buffer_desc tok_out, tok_in;
704 DATA_BLOB blob_out = data_blob_null;
705 DATA_BLOB blob_in = data_blob_null;
706 char *host_princ_s = NULL;
707 OM_uint32 ret_flags = 0;
708 NTSTATUS status = NT_STATUS_OK;
709
710 gss_OID_desc nt_hostbased_service =
711 {10, discard_const_p(char, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04")};
712
713 memset(&tok_out, '\0', sizeof(tok_out));
714
715 /* Get a ticket for the service@host */
716 if (asprintf(&host_princ_s, "%s@%s", service, host) == -1) {
717 return NT_STATUS_NO_MEMORY;
718 }
719
720 input_name.value = host_princ_s;
721 input_name.length = strlen(host_princ_s) + 1;
722
723 ret = gss_import_name(&min,
724 &input_name,
725 &nt_hostbased_service,
726 &srv_name);
727
728 if (ret != GSS_S_COMPLETE) {
729 SAFE_FREE(host_princ_s);
730 return map_nt_error_from_gss(ret, min);
731 }
732
733 if (spnego_blob_in.length == 0) {
734 p_tok_in = GSS_C_NO_BUFFER;
735 } else {
736 /* Remove the SPNEGO wrapper */
737 if (!spnego_parse_auth_response(ctx, spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
738 status = NT_STATUS_UNSUCCESSFUL;
739 goto fail;
740 }
741 tok_in.value = blob_in.data;
742 tok_in.length = blob_in.length;
743 p_tok_in = &tok_in;
744 }
745
746 ret = gss_init_sec_context(&min,
747 GSS_C_NO_CREDENTIAL, /* Use our default cred. */
748 &es->s.gss_state->gss_ctx,
749 srv_name,
750 GSS_C_NO_OID, /* default OID. */
751 GSS_C_MUTUAL_FLAG | GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG | GSS_C_DELEG_FLAG,
752 GSS_C_INDEFINITE, /* requested ticket lifetime. */
753 NULL, /* no channel bindings */
754 p_tok_in,
755 NULL, /* ignore mech type */
756 &tok_out,
757 &ret_flags,
758 NULL); /* ignore time_rec */
759
760 status = map_nt_error_from_gss(ret, min);
761 if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
762 ADS_STATUS adss = ADS_ERROR_GSS(ret, min);
763 DEBUG(10,("make_cli_gss_blob: gss_init_sec_context failed with %s\n",
764 ads_errstr(adss)));
765 goto fail;
766 }
767
768 if ((ret_flags & SMB_GSS_REQUIRED_FLAGS) != SMB_GSS_REQUIRED_FLAGS) {
769 status = NT_STATUS_ACCESS_DENIED;
770 }
771
772 blob_out = data_blob_talloc(ctx, tok_out.value, tok_out.length);
773
774 /* Wrap in an SPNEGO wrapper */
775 *p_blob_out = spnego_gen_negTokenInit(ctx, krb_mechs, &blob_out, NULL);
776
777 fail:
778
779 data_blob_free(&blob_out);
780 data_blob_free(&blob_in);
781 SAFE_FREE(host_princ_s);
782 gss_release_name(&min, &srv_name);
783 if (tok_out.value) {
784 gss_release_buffer(&min, &tok_out);
785 }
786 return status;
787 }
788
789 /******************************************************************************
790 Start a SPNEGO gssapi encryption context.
791 ******************************************************************************/
792
793 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
794 {
795 DATA_BLOB blob_recv = data_blob_null;
796 DATA_BLOB blob_send = data_blob_null;
797 DATA_BLOB param_out = data_blob_null;
798 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
799 fstring fqdn;
800 const char *servicename;
801 struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_GSS);
802
803 if (!es) {
804 return NT_STATUS_NO_MEMORY;
805 }
806
807 name_to_fqdn(fqdn, cli_state_remote_name(cli));
808 strlower_m(fqdn);
809
810 servicename = "cifs";
811 status = make_cli_gss_blob(talloc_tos(), es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
812 if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
813 servicename = "host";
814 status = make_cli_gss_blob(talloc_tos(), es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
815 if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
816 goto fail;
817 }
818 }
819
820 do {
821 data_blob_free(&blob_recv);
822 status = enc_blob_send_receive(cli, &blob_send, &blob_recv, &param_out);
823 if (param_out.length == 2) {
824 es->enc_ctx_num = SVAL(param_out.data, 0);
825 }
826 data_blob_free(&blob_send);
827 status = make_cli_gss_blob(talloc_tos(), es, servicename, fqdn, status, blob_recv, &blob_send);
828 } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
829 data_blob_free(&blob_recv);
830
831 if (NT_STATUS_IS_OK(status)) {
832 /* Replace the old state, if any. */
833 if (cli->trans_enc_state) {
834 common_free_encryption_state(&cli->trans_enc_state);
835 }
836 cli->trans_enc_state = es;
837 cli->trans_enc_state->enc_on = True;
838 es = NULL;
839 }
840
841 fail:
842
843 common_free_encryption_state(&es);
844 return status;
845 }
846 #else
847 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
848 {
849 return NT_STATUS_NOT_SUPPORTED;
850 }
851 #endif
852
853 /********************************************************************
854 Ensure a connection is encrypted.
855 ********************************************************************/
856
857 NTSTATUS cli_force_encryption(struct cli_state *c,
858 const char *username,
859 const char *password,
860 const char *domain)
861 {
862 uint16 major, minor;
863 uint32 caplow, caphigh;
864 NTSTATUS status;
865
866 if (!SERVER_HAS_UNIX_CIFS(c)) {
867 return NT_STATUS_NOT_SUPPORTED;
868 }
869
870 status = cli_unix_extensions_version(c, &major, &minor, &caplow,
871 &caphigh);
872 if (!NT_STATUS_IS_OK(status)) {
873 DEBUG(10, ("cli_force_encryption: cli_unix_extensions_version "
874 "returned %s\n", nt_errstr(status)));
875 return NT_STATUS_UNKNOWN_REVISION;
876 }
877
878 if (!(caplow & CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP)) {
879 return NT_STATUS_UNSUPPORTED_COMPRESSION;
880 }
881
882 if (c->use_kerberos) {
883 return cli_gss_smb_encryption_start(c);
884 }
885 return cli_raw_ntlm_smb_encryption_start(c,
886 username,
887 password,
888 domain);
889 }
reg import