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s3: libsmb: Do some hardening in the receive processing of cli_shadow_copy_data_recv().
[Samba.git] / source3 / smbd / smb2_create.c
blob75da8a1e34ba942183903ed3a4f9fa89cfe3e2c7
1 /*
2 Unix SMB/CIFS implementation.
3 Core SMB2 server
4
5 Copyright (C) Stefan Metzmacher 2009
6 Copyright (C) Jeremy Allison 2010
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22 #include "includes.h"
23 #include "printing.h"
24 #include "smbd/smbd.h"
25 #include "smbd/globals.h"
26 #include "../libcli/smb/smb_common.h"
27 #include "../librpc/gen_ndr/ndr_security.h"
28 #include "../librpc/gen_ndr/ndr_smb2_lease_struct.h"
29 #include "../lib/util/tevent_ntstatus.h"
30 #include "messages.h"
31
32 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
33 {
34 switch(in_oplock_level) {
35 case SMB2_OPLOCK_LEVEL_NONE:
36 return NO_OPLOCK;
37 case SMB2_OPLOCK_LEVEL_II:
38 return LEVEL_II_OPLOCK;
39 case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
40 return EXCLUSIVE_OPLOCK;
41 case SMB2_OPLOCK_LEVEL_BATCH:
42 return BATCH_OPLOCK;
43 case SMB2_OPLOCK_LEVEL_LEASE:
44 return LEASE_OPLOCK;
45 default:
46 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
47 "unknown level %u\n",
48 (unsigned int)in_oplock_level));
49 return NO_OPLOCK;
50 }
51 }
52
53 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
54 {
55 if (BATCH_OPLOCK_TYPE(oplock_type)) {
56 return SMB2_OPLOCK_LEVEL_BATCH;
57 } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
58 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
59 } else if (oplock_type == LEVEL_II_OPLOCK) {
60 return SMB2_OPLOCK_LEVEL_II;
61 } else if (oplock_type == LEASE_OPLOCK) {
62 return SMB2_OPLOCK_LEVEL_LEASE;
63 } else {
64 return SMB2_OPLOCK_LEVEL_NONE;
65 }
66 }
67
68 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
69 struct tevent_context *ev,
70 struct smbd_smb2_request *smb2req,
71 uint8_t in_oplock_level,
72 uint32_t in_impersonation_level,
73 uint32_t in_desired_access,
74 uint32_t in_file_attributes,
75 uint32_t in_share_access,
76 uint32_t in_create_disposition,
77 uint32_t in_create_options,
78 const char *in_name,
79 struct smb2_create_blobs in_context_blobs);
80 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
81 TALLOC_CTX *mem_ctx,
82 uint8_t *out_oplock_level,
83 uint32_t *out_create_action,
84 struct timespec *out_creation_ts,
85 struct timespec *out_last_access_ts,
86 struct timespec *out_last_write_ts,
87 struct timespec *out_change_ts,
88 uint64_t *out_allocation_size,
89 uint64_t *out_end_of_file,
90 uint32_t *out_file_attributes,
91 uint64_t *out_file_id_persistent,
92 uint64_t *out_file_id_volatile,
93 struct smb2_create_blobs *out_context_blobs);
94
95 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
96 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
97 {
98 const uint8_t *inbody;
99 const struct iovec *indyniov;
100 uint8_t in_oplock_level;
101 uint32_t in_impersonation_level;
102 uint32_t in_desired_access;
103 uint32_t in_file_attributes;
104 uint32_t in_share_access;
105 uint32_t in_create_disposition;
106 uint32_t in_create_options;
107 uint16_t in_name_offset;
108 uint16_t in_name_length;
109 DATA_BLOB in_name_buffer;
110 char *in_name_string;
111 size_t in_name_string_size;
112 uint32_t name_offset = 0;
113 uint32_t name_available_length = 0;
114 uint32_t in_context_offset;
115 uint32_t in_context_length;
116 DATA_BLOB in_context_buffer;
117 struct smb2_create_blobs in_context_blobs;
118 uint32_t context_offset = 0;
119 uint32_t context_available_length = 0;
120 uint32_t dyn_offset;
121 NTSTATUS status;
122 bool ok;
123 struct tevent_req *tsubreq;
124
125 status = smbd_smb2_request_verify_sizes(smb2req, 0x39);
126 if (!NT_STATUS_IS_OK(status)) {
127 return smbd_smb2_request_error(smb2req, status);
128 }
129 inbody = SMBD_SMB2_IN_BODY_PTR(smb2req);
130
131 in_oplock_level = CVAL(inbody, 0x03);
132 in_impersonation_level = IVAL(inbody, 0x04);
133 in_desired_access = IVAL(inbody, 0x18);
134 in_file_attributes = IVAL(inbody, 0x1C);
135 in_share_access = IVAL(inbody, 0x20);
136 in_create_disposition = IVAL(inbody, 0x24);
137 in_create_options = IVAL(inbody, 0x28);
138 in_name_offset = SVAL(inbody, 0x2C);
139 in_name_length = SVAL(inbody, 0x2E);
140 in_context_offset = IVAL(inbody, 0x30);
141 in_context_length = IVAL(inbody, 0x34);
142
143 /*
144 * First check if the dynamic name and context buffers
145 * are correctly specified.
146 *
147 * Note: That we don't check if the name and context buffers
148 * overlap
149 */
150
151 dyn_offset = SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(smb2req);
152
153 if (in_name_offset == 0 && in_name_length == 0) {
154 /* This is ok */
155 name_offset = 0;
156 } else if (in_name_offset < dyn_offset) {
157 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
158 } else {
159 name_offset = in_name_offset - dyn_offset;
160 }
161
162 indyniov = SMBD_SMB2_IN_DYN_IOV(smb2req);
163
164 if (name_offset > indyniov->iov_len) {
165 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
166 }
167
168 name_available_length = indyniov->iov_len - name_offset;
169
170 if (in_name_length > name_available_length) {
171 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
172 }
173
174 in_name_buffer.data = (uint8_t *)indyniov->iov_base + name_offset;
175 in_name_buffer.length = in_name_length;
176
177 if (in_context_offset == 0 && in_context_length == 0) {
178 /* This is ok */
179 context_offset = 0;
180 } else if (in_context_offset < dyn_offset) {
181 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
182 } else {
183 context_offset = in_context_offset - dyn_offset;
184 }
185
186 if (context_offset > indyniov->iov_len) {
187 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
188 }
189
190 context_available_length = indyniov->iov_len - context_offset;
191
192 if (in_context_length > context_available_length) {
193 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
194 }
195
196 in_context_buffer.data = (uint8_t *)indyniov->iov_base +
197 context_offset;
198 in_context_buffer.length = in_context_length;
199
200 /*
201 * Now interpret the name and context buffers
202 */
203
204 ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
205 in_name_buffer.data,
206 in_name_buffer.length,
207 &in_name_string,
208 &in_name_string_size);
209 if (!ok) {
210 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
211 }
212
213 if (in_name_buffer.length == 0) {
214 in_name_string_size = 0;
215 }
216
217 if (strlen(in_name_string) != in_name_string_size) {
218 return smbd_smb2_request_error(smb2req, NT_STATUS_OBJECT_NAME_INVALID);
219 }
220
221 ZERO_STRUCT(in_context_blobs);
222 status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
223 if (!NT_STATUS_IS_OK(status)) {
224 return smbd_smb2_request_error(smb2req, status);
225 }
226
227 tsubreq = smbd_smb2_create_send(smb2req,
228 smb2req->sconn->ev_ctx,
229 smb2req,
230 in_oplock_level,
231 in_impersonation_level,
232 in_desired_access,
233 in_file_attributes,
234 in_share_access,
235 in_create_disposition,
236 in_create_options,
237 in_name_string,
238 in_context_blobs);
239 if (tsubreq == NULL) {
240 smb2req->subreq = NULL;
241 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
242 }
243 tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
244
245 return smbd_smb2_request_pending_queue(smb2req, tsubreq, 500);
246 }
247
248 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
249 {
250 uint8_t *reqhdr = SMBD_SMB2_OUT_HDR_PTR(smb2req);
251 return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
252 }
253
254 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
255 {
256 struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
257 struct smbd_smb2_request);
258 DATA_BLOB outbody;
259 DATA_BLOB outdyn;
260 uint8_t out_oplock_level = 0;
261 uint32_t out_create_action = 0;
262 connection_struct *conn = smb2req->tcon->compat;
263 struct timespec out_creation_ts = { 0, };
264 struct timespec out_last_access_ts = { 0, };
265 struct timespec out_last_write_ts = { 0, };
266 struct timespec out_change_ts = { 0, };
267 uint64_t out_allocation_size = 0;
268 uint64_t out_end_of_file = 0;
269 uint32_t out_file_attributes = 0;
270 uint64_t out_file_id_persistent = 0;
271 uint64_t out_file_id_volatile = 0;
272 struct smb2_create_blobs out_context_blobs;
273 DATA_BLOB out_context_buffer;
274 uint16_t out_context_buffer_offset = 0;
275 NTSTATUS status;
276 NTSTATUS error; /* transport error */
277
278 status = smbd_smb2_create_recv(tsubreq,
279 smb2req,
280 &out_oplock_level,
281 &out_create_action,
282 &out_creation_ts,
283 &out_last_access_ts,
284 &out_last_write_ts,
285 &out_change_ts,
286 &out_allocation_size,
287 &out_end_of_file,
288 &out_file_attributes,
289 &out_file_id_persistent,
290 &out_file_id_volatile,
291 &out_context_blobs);
292 if (!NT_STATUS_IS_OK(status)) {
293 error = smbd_smb2_request_error(smb2req, status);
294 if (!NT_STATUS_IS_OK(error)) {
295 smbd_server_connection_terminate(smb2req->xconn,
296 nt_errstr(error));
297 return;
298 }
299 return;
300 }
301
302 status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
303 if (!NT_STATUS_IS_OK(status)) {
304 error = smbd_smb2_request_error(smb2req, status);
305 if (!NT_STATUS_IS_OK(error)) {
306 smbd_server_connection_terminate(smb2req->xconn,
307 nt_errstr(error));
308 return;
309 }
310 return;
311 }
312
313 if (out_context_buffer.length > 0) {
314 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
315 }
316
317 outbody = smbd_smb2_generate_outbody(smb2req, 0x58);
318 if (outbody.data == NULL) {
319 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
320 if (!NT_STATUS_IS_OK(error)) {
321 smbd_server_connection_terminate(smb2req->xconn,
322 nt_errstr(error));
323 return;
324 }
325 return;
326 }
327
328 SSVAL(outbody.data, 0x00, 0x58 + 1); /* struct size */
329 SCVAL(outbody.data, 0x02,
330 out_oplock_level); /* oplock level */
331 SCVAL(outbody.data, 0x03, 0); /* reserved */
332 SIVAL(outbody.data, 0x04,
333 out_create_action); /* create action */
334 put_long_date_timespec(conn->ts_res,
335 (char *)outbody.data + 0x08,
336 out_creation_ts); /* creation time */
337 put_long_date_timespec(conn->ts_res,
338 (char *)outbody.data + 0x10,
339 out_last_access_ts); /* last access time */
340 put_long_date_timespec(conn->ts_res,
341 (char *)outbody.data + 0x18,
342 out_last_write_ts); /* last write time */
343 put_long_date_timespec(conn->ts_res,
344 (char *)outbody.data + 0x20,
345 out_change_ts); /* change time */
346 SBVAL(outbody.data, 0x28,
347 out_allocation_size); /* allocation size */
348 SBVAL(outbody.data, 0x30,
349 out_end_of_file); /* end of file */
350 SIVAL(outbody.data, 0x38,
351 out_file_attributes); /* file attributes */
352 SIVAL(outbody.data, 0x3C, 0); /* reserved */
353 SBVAL(outbody.data, 0x40,
354 out_file_id_persistent); /* file id (persistent) */
355 SBVAL(outbody.data, 0x48,
356 out_file_id_volatile); /* file id (volatile) */
357 SIVAL(outbody.data, 0x50,
358 out_context_buffer_offset); /* create contexts offset */
359 SIVAL(outbody.data, 0x54,
360 out_context_buffer.length); /* create contexts length */
361
362 outdyn = out_context_buffer;
363
364 error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
365 if (!NT_STATUS_IS_OK(error)) {
366 smbd_server_connection_terminate(smb2req->xconn,
367 nt_errstr(error));
368 return;
369 }
370 }
371
372 static bool smb2_lease_key_valid(const struct smb2_lease_key *key)
373 {
374 return ((key->data[0] != 0) || (key->data[1] != 0));
375 }
376
377 static NTSTATUS smbd_smb2_create_durable_lease_check(
378 const char *requested_filename, const struct files_struct *fsp,
379 const struct smb2_lease *lease_ptr)
380 {
381 struct smb_filename *smb_fname = NULL;
382 uint32_t ucf_flags = UCF_PREP_CREATEFILE;
383 NTSTATUS status;
384
385 if (lease_ptr == NULL) {
386 if (fsp->oplock_type != LEASE_OPLOCK) {
387 return NT_STATUS_OK;
388 }
389 DEBUG(10, ("Reopened file has lease, but no lease "
390 "requested\n"));
391 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
392 }
393
394 if (fsp->oplock_type != LEASE_OPLOCK) {
395 DEBUG(10, ("Lease requested, but reopened file has no "
396 "lease\n"));
397 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
398 }
399
400 if (!smb2_lease_key_equal(&lease_ptr->lease_key,
401 &fsp->lease->lease.lease_key)) {
402 DEBUG(10, ("Different lease key requested than found "
403 "in reopened file\n"));
404 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
405 }
406
407 status = filename_convert(talloc_tos(), fsp->conn, false,
408 requested_filename, ucf_flags,
409 NULL, &smb_fname);
410 if (!NT_STATUS_IS_OK(status)) {
411 DEBUG(10, ("filename_convert returned %s\n",
412 nt_errstr(status)));
413 return status;
414 }
415
416 if (!strequal(fsp->fsp_name->base_name, smb_fname->base_name)) {
417 DEBUG(10, ("Lease requested for file %s, reopened file "
418 "is named %s\n", smb_fname->base_name,
419 fsp->fsp_name->base_name));
420 TALLOC_FREE(smb_fname);
421 return NT_STATUS_INVALID_PARAMETER;
422 }
423
424 TALLOC_FREE(smb_fname);
425
426 return NT_STATUS_OK;
427 }
428
429 struct smbd_smb2_create_state {
430 struct smbd_smb2_request *smb2req;
431 struct smb_request *smb1req;
432 bool open_was_deferred;
433 struct tevent_timer *te;
434 struct tevent_immediate *im;
435 struct timeval request_time;
436 struct file_id id;
437 struct deferred_open_record *open_rec;
438 uint8_t out_oplock_level;
439 uint32_t out_create_action;
440 struct timespec out_creation_ts;
441 struct timespec out_last_access_ts;
442 struct timespec out_last_write_ts;
443 struct timespec out_change_ts;
444 uint64_t out_allocation_size;
445 uint64_t out_end_of_file;
446 uint32_t out_file_attributes;
447 uint64_t out_file_id_persistent;
448 uint64_t out_file_id_volatile;
449 struct smb2_create_blobs *out_context_blobs;
450 };
451
452 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
453 struct tevent_context *ev,
454 struct smbd_smb2_request *smb2req,
455 uint8_t in_oplock_level,
456 uint32_t in_impersonation_level,
457 uint32_t in_desired_access,
458 uint32_t in_file_attributes,
459 uint32_t in_share_access,
460 uint32_t in_create_disposition,
461 uint32_t in_create_options,
462 const char *in_name,
463 struct smb2_create_blobs in_context_blobs)
464 {
465 struct tevent_req *req = NULL;
466 struct smbd_smb2_create_state *state = NULL;
467 NTSTATUS status;
468 struct smb_request *smb1req = NULL;
469 files_struct *result = NULL;
470 int info;
471 int requested_oplock_level;
472 struct smb2_create_blob *dhnc = NULL;
473 struct smb2_create_blob *dh2c = NULL;
474 struct smb2_create_blob *dhnq = NULL;
475 struct smb2_create_blob *dh2q = NULL;
476 struct smb2_create_blob *rqls = NULL;
477 bool replay_operation = false;
478
479 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
480 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
481 } else {
482 requested_oplock_level = in_oplock_level;
483 }
484
485
486 if (smb2req->subreq == NULL) {
487 /* New create call. */
488 req = tevent_req_create(mem_ctx, &state,
489 struct smbd_smb2_create_state);
490 if (req == NULL) {
491 return NULL;
492 }
493 state->smb2req = smb2req;
494
495 smb1req = smbd_smb2_fake_smb_request(smb2req);
496 if (tevent_req_nomem(smb1req, req)) {
497 return tevent_req_post(req, ev);
498 }
499 state->smb1req = smb1req;
500 smb2req->subreq = req;
501 DEBUG(10,("smbd_smb2_create: name[%s]\n",
502 in_name));
503 } else {
504 /* Re-entrant create call. */
505 req = smb2req->subreq;
506 state = tevent_req_data(req,
507 struct smbd_smb2_create_state);
508 smb1req = state->smb1req;
509 TALLOC_FREE(state->out_context_blobs);
510 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
511 in_name ));
512 }
513
514 state->out_context_blobs = talloc_zero(state, struct smb2_create_blobs);
515 if (tevent_req_nomem(state->out_context_blobs, req)) {
516 return tevent_req_post(req, ev);
517 }
518
519 dhnq = smb2_create_blob_find(&in_context_blobs,
520 SMB2_CREATE_TAG_DHNQ);
521 dhnc = smb2_create_blob_find(&in_context_blobs,
522 SMB2_CREATE_TAG_DHNC);
523 dh2q = smb2_create_blob_find(&in_context_blobs,
524 SMB2_CREATE_TAG_DH2Q);
525 dh2c = smb2_create_blob_find(&in_context_blobs,
526 SMB2_CREATE_TAG_DH2C);
527 if (smb2req->xconn->smb2.server.capabilities & SMB2_CAP_LEASING) {
528 rqls = smb2_create_blob_find(&in_context_blobs,
529 SMB2_CREATE_TAG_RQLS);
530 }
531
532 if ((dhnc && dh2c) || (dhnc && dh2q) || (dh2c && dhnq) ||
533 (dh2q && dh2c))
534 {
535 /* not both are allowed at the same time */
536 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
537 return tevent_req_post(req, ev);
538 }
539
540 if (dhnc) {
541 uint32_t num_blobs_allowed;
542
543 if (dhnc->data.length != 16) {
544 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
545 return tevent_req_post(req, ev);
546 }
547
548 /*
549 * According to MS-SMB2: 3.3.5.9.7, "Handling the
550 * SMB2_CREATE_DURABLE_HANDLE_RECONNECT Create Context",
551 * we should ignore an additional dhnq blob, but fail
552 * the request (with status OBJECT_NAME_NOT_FOUND) if
553 * any other extra create blob has been provided.
554 *
555 * (Note that the cases of an additional dh2q or dh2c blob
556 * which require a different error code, have been treated
557 * above.)
558 */
559
560 if (dhnq) {
561 num_blobs_allowed = 2;
562 } else {
563 num_blobs_allowed = 1;
564 }
565
566 if (rqls != NULL) {
567 num_blobs_allowed += 1;
568 }
569
570 if (in_context_blobs.num_blobs != num_blobs_allowed) {
571 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
572 return tevent_req_post(req, ev);
573 }
574 }
575
576 if (dh2c) {
577 uint32_t num_blobs_allowed;
578
579 if (dh2c->data.length != 36) {
580 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
581 return tevent_req_post(req, ev);
582 }
583
584 /*
585 * According to MS-SMB2: 3.3.5.9.12, "Handling the
586 * SMB2_CREATE_DURABLE_HANDLE_RECONNECT_V2 Create Context",
587 * we should fail the request with status
588 * OBJECT_NAME_NOT_FOUND if any other create blob has been
589 * provided.
590 *
591 * (Note that the cases of an additional dhnq, dhnc or dh2q
592 * blob which require a different error code, have been
593 * treated above.)
594 */
595
596 num_blobs_allowed = 1;
597
598 if (rqls != NULL) {
599 num_blobs_allowed += 1;
600 }
601
602 if (in_context_blobs.num_blobs != num_blobs_allowed) {
603 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
604 return tevent_req_post(req, ev);
605 }
606 }
607
608 if (IS_IPC(smb1req->conn)) {
609 const char *pipe_name = in_name;
610
611 if (dhnc || dh2c) {
612 /* durable handles are not supported on IPC$ */
613 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
614 return tevent_req_post(req, ev);
615 }
616
617 if (!lp_nt_pipe_support()) {
618 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
619 return tevent_req_post(req, ev);
620 }
621
622 status = open_np_file(smb1req, pipe_name, &result);
623 if (!NT_STATUS_IS_OK(status)) {
624 tevent_req_nterror(req, status);
625 return tevent_req_post(req, ev);
626 }
627 info = FILE_WAS_OPENED;
628 } else if (CAN_PRINT(smb1req->conn)) {
629 if (dhnc || dh2c) {
630 /* durable handles are not supported on printers */
631 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
632 return tevent_req_post(req, ev);
633 }
634
635 status = file_new(smb1req, smb1req->conn, &result);
636 if(!NT_STATUS_IS_OK(status)) {
637 tevent_req_nterror(req, status);
638 return tevent_req_post(req, ev);
639 }
640
641 status = print_spool_open(result, in_name,
642 smb1req->vuid);
643 if (!NT_STATUS_IS_OK(status)) {
644 file_free(smb1req, result);
645 tevent_req_nterror(req, status);
646 return tevent_req_post(req, ev);
647 }
648 info = FILE_WAS_CREATED;
649 } else {
650 char *fname;
651 struct smb2_create_blob *exta = NULL;
652 struct ea_list *ea_list = NULL;
653 struct smb2_create_blob *mxac = NULL;
654 NTTIME max_access_time = 0;
655 struct smb2_create_blob *secd = NULL;
656 struct security_descriptor *sec_desc = NULL;
657 struct smb2_create_blob *alsi = NULL;
658 uint64_t allocation_size = 0;
659 struct smb2_create_blob *twrp = NULL;
660 struct smb2_create_blob *qfid = NULL;
661 struct GUID _create_guid = GUID_zero();
662 struct GUID *create_guid = NULL;
663 bool update_open = false;
664 bool durable_requested = false;
665 uint32_t durable_timeout_msec = 0;
666 bool do_durable_reconnect = false;
667 uint64_t persistent_id = 0;
668 struct smb2_lease lease;
669 struct smb2_lease *lease_ptr = NULL;
670 ssize_t lease_len = -1;
671 bool need_replay_cache = false;
672 struct smbXsrv_open *op = NULL;
673 #if 0
674 struct smb2_create_blob *svhdx = NULL;
675 #endif
676
677 exta = smb2_create_blob_find(&in_context_blobs,
678 SMB2_CREATE_TAG_EXTA);
679 mxac = smb2_create_blob_find(&in_context_blobs,
680 SMB2_CREATE_TAG_MXAC);
681 secd = smb2_create_blob_find(&in_context_blobs,
682 SMB2_CREATE_TAG_SECD);
683 alsi = smb2_create_blob_find(&in_context_blobs,
684 SMB2_CREATE_TAG_ALSI);
685 twrp = smb2_create_blob_find(&in_context_blobs,
686 SMB2_CREATE_TAG_TWRP);
687 qfid = smb2_create_blob_find(&in_context_blobs,
688 SMB2_CREATE_TAG_QFID);
689 #if 0
690 if (smb2req->xconn->protocol >= PROTOCOL_SMB3_02) {
691 /*
692 * This was introduced with SMB3_02
693 */
694 svhdx = smb2_create_blob_find(&in_context_blobs,
695 SVHDX_OPEN_DEVICE_CONTEXT);
696 }
697 #endif
698
699 fname = talloc_strdup(state, in_name);
700 if (tevent_req_nomem(fname, req)) {
701 return tevent_req_post(req, ev);
702 }
703
704 if (exta) {
705 if (!lp_ea_support(SNUM(smb2req->tcon->compat))) {
706 tevent_req_nterror(req,
707 NT_STATUS_EAS_NOT_SUPPORTED);
708 return tevent_req_post(req, ev);
709 }
710
711 ea_list = read_nttrans_ea_list(mem_ctx,
712 (const char *)exta->data.data, exta->data.length);
713 if (!ea_list) {
714 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
715 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
716 return tevent_req_post(req, ev);
717 }
718
719 /*
720 * NB. When SMB2+ unix extensions are added,
721 * we need to relax this check in invalid
722 * names - we used to not do this if
723 * lp_posix_pathnames() was false.
724 */
725 if (ea_list_has_invalid_name(ea_list)) {
726 tevent_req_nterror(req, STATUS_INVALID_EA_NAME);
727 return tevent_req_post(req, ev);
728 }
729 }
730
731 if (mxac) {
732 if (mxac->data.length == 0) {
733 max_access_time = 0;
734 } else if (mxac->data.length == 8) {
735 max_access_time = BVAL(mxac->data.data, 0);
736 } else {
737 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
738 return tevent_req_post(req, ev);
739 }
740 }
741
742 if (secd) {
743 enum ndr_err_code ndr_err;
744
745 sec_desc = talloc_zero(state, struct security_descriptor);
746 if (tevent_req_nomem(sec_desc, req)) {
747 return tevent_req_post(req, ev);
748 }
749
750 ndr_err = ndr_pull_struct_blob(&secd->data,
751 sec_desc, sec_desc,
752 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
753 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
754 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
755 ndr_errstr(ndr_err)));
756 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
757 return tevent_req_post(req, ev);
758 }
759 }
760
761 if (dhnq) {
762 if (dhnq->data.length != 16) {
763 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
764 return tevent_req_post(req, ev);
765 }
766
767 if (dh2q) {
768 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
769 return tevent_req_post(req, ev);
770 }
771
772 /*
773 * durable handle request is processed below.
774 */
775 durable_requested = true;
776 /*
777 * Set the timeout to 16 mins.
778 *
779 * TODO: test this against Windows 2012
780 * as the default for durable v2 is 1 min.
781 */
782 durable_timeout_msec = (16*60*1000);
783 }
784
785 if (dh2q) {
786 const uint8_t *p = dh2q->data.data;
787 uint32_t durable_v2_timeout = 0;
788 DATA_BLOB create_guid_blob;
789 const uint8_t *hdr;
790 uint32_t flags;
791
792 if (dh2q->data.length != 32) {
793 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
794 return tevent_req_post(req, ev);
795 }
796
797 if (dhnq) {
798 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
799 return tevent_req_post(req, ev);
800 }
801
802 durable_v2_timeout = IVAL(p, 0);
803 create_guid_blob = data_blob_const(p + 16, 16);
804
805 status = GUID_from_ndr_blob(&create_guid_blob,
806 &_create_guid);
807 if (tevent_req_nterror(req, status)) {
808 return tevent_req_post(req, ev);
809 }
810 create_guid = &_create_guid;
811 /*
812 * we need to store the create_guid later
813 */
814 update_open = true;
815
816 /*
817 * And we need to create a cache for replaying the
818 * create.
819 */
820 need_replay_cache = true;
821
822 /*
823 * durable handle v2 request processed below
824 */
825 durable_requested = true;
826 durable_timeout_msec = durable_v2_timeout;
827 if (durable_timeout_msec == 0) {
828 /*
829 * Set the timeout to 1 min as default.
830 *
831 * This matches Windows 2012.
832 */
833 durable_timeout_msec = (60*1000);
834 }
835
836 /*
837 * Check for replay operation.
838 * Only consider it when we have dh2q.
839 * If we do not have a replay operation, verify that
840 * the create_guid is not cached for replay.
841 */
842 hdr = SMBD_SMB2_IN_HDR_PTR(smb2req);
843 flags = IVAL(hdr, SMB2_HDR_FLAGS);
844 replay_operation =
845 flags & SMB2_HDR_FLAG_REPLAY_OPERATION;
846
847 status = smb2srv_open_lookup_replay_cache(
848 smb2req->xconn, create_guid,
849 0 /* now */, &op);
850
851 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
852 replay_operation = false;
853 } else if (tevent_req_nterror(req, status)) {
854 DBG_WARNING("smb2srv_open_lookup_replay_cache "
855 "failed: %s\n", nt_errstr(status));
856 return tevent_req_post(req, ev);
857 } else if (!replay_operation) {
858 /*
859 * If a create without replay operation flag
860 * is sent but with a create_guid that is
861 * currently in the replay cache -- fail.
862 */
863 status = NT_STATUS_DUPLICATE_OBJECTID;
864 (void)tevent_req_nterror(req, status);
865 return tevent_req_post(req, ev);
866 }
867 }
868
869 if (dhnc) {
870 persistent_id = BVAL(dhnc->data.data, 0);
871
872 do_durable_reconnect = true;
873 }
874
875 if (dh2c) {
876 const uint8_t *p = dh2c->data.data;
877 DATA_BLOB create_guid_blob;
878
879 persistent_id = BVAL(p, 0);
880 create_guid_blob = data_blob_const(p + 16, 16);
881
882 status = GUID_from_ndr_blob(&create_guid_blob,
883 &_create_guid);
884 if (tevent_req_nterror(req, status)) {
885 return tevent_req_post(req, ev);
886 }
887 create_guid = &_create_guid;
888
889 do_durable_reconnect = true;
890 }
891
892 if (alsi) {
893 if (alsi->data.length != 8) {
894 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
895 return tevent_req_post(req, ev);
896 }
897 allocation_size = BVAL(alsi->data.data, 0);
898 }
899
900 if (twrp) {
901 NTTIME nttime;
902 time_t t;
903 struct tm *tm;
904
905 if (twrp->data.length != 8) {
906 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
907 return tevent_req_post(req, ev);
908 }
909
910 nttime = BVAL(twrp->data.data, 0);
911 t = nt_time_to_unix(nttime);
912 tm = gmtime(&t);
913
914 TALLOC_FREE(fname);
915 fname = talloc_asprintf(state,
916 "%s\\@GMT-%04u.%02u.%02u-%02u.%02u.%02u",
917 in_name,
918 tm->tm_year + 1900,
919 tm->tm_mon + 1,
920 tm->tm_mday,
921 tm->tm_hour,
922 tm->tm_min,
923 tm->tm_sec);
924 if (tevent_req_nomem(fname, req)) {
925 return tevent_req_post(req, ev);
926 }
927 }
928
929 if (qfid) {
930 if (qfid->data.length != 0) {
931 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
932 return tevent_req_post(req, ev);
933 }
934 }
935
936 if (rqls) {
937 lease_len = smb2_lease_pull(
938 rqls->data.data, rqls->data.length, &lease);
939 if (lease_len == -1) {
940 tevent_req_nterror(
941 req, NT_STATUS_INVALID_PARAMETER);
942 return tevent_req_post(req, ev);
943 }
944 lease_ptr = &lease;
945
946 if (DEBUGLEVEL >= 10) {
947 DEBUG(10, ("Got lease request size %d\n",
948 (int)lease_len));
949 NDR_PRINT_DEBUG(smb2_lease, lease_ptr);
950 }
951
952 if (!smb2_lease_key_valid(&lease.lease_key)) {
953 lease_ptr = NULL;
954 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
955 }
956
957 if ((smb2req->xconn->protocol < PROTOCOL_SMB3_00) &&
958 (lease.lease_version != 1)) {
959 DEBUG(10, ("v2 lease key only for SMB3\n"));
960 lease_ptr = NULL;
961 }
962
963 /*
964 * Replay with a lease is only allowed if the
965 * established open carries a lease with the
966 * same lease key.
967 */
968 if (replay_operation) {
969 struct smb2_lease *op_ls =
970 &op->compat->lease->lease;
971 int op_oplock = op->compat->oplock_type;
972
973 if (map_samba_oplock_levels_to_smb2(op_oplock)
974 != SMB2_OPLOCK_LEVEL_LEASE)
975 {
976 status = NT_STATUS_ACCESS_DENIED;
977 (void)tevent_req_nterror(req, status);
978 return tevent_req_post(req, ev);
979 }
980 if (!smb2_lease_key_equal(&lease.lease_key,
981 &op_ls->lease_key))
982 {
983 status = NT_STATUS_ACCESS_DENIED;
984 (void)tevent_req_nterror(req, status);
985 return tevent_req_post(req, ev);
986 }
987 }
988 }
989
990 /* these are ignored for SMB2 */
991 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
992 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
993
994 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
995
996 DEBUG(10, ("smbd_smb2_create_send: open execution phase\n"));
997
998 /*
999 * For the backend file open procedure, there are
1000 * three possible modes: replay operation (in which case
1001 * there is nothing else to do), durable_reconnect or
1002 * new open.
1003 */
1004 if (replay_operation) {
1005 result = op->compat;
1006 result->op = op;
1007 update_open = false;
1008 info = op->create_action;
1009 } else if (do_durable_reconnect) {
1010 DATA_BLOB new_cookie = data_blob_null;
1011 NTTIME now = timeval_to_nttime(&smb2req->request_time);
1012
1013 status = smb2srv_open_recreate(smb2req->xconn,
1014 smb1req->conn->session_info,
1015 persistent_id, create_guid,
1016 now, &op);
1017 if (!NT_STATUS_IS_OK(status)) {
1018 DEBUG(3, ("smbd_smb2_create_send: "
1019 "smb2srv_open_recreate failed: %s\n",
1020 nt_errstr(status)));
1021 tevent_req_nterror(req, status);
1022 return tevent_req_post(req, ev);
1023 }
1024
1025 DEBUG(10, ("smb2_create_send: %s to recreate the "
1026 "smb2srv_open struct for a durable handle.\n",
1027 op->global->durable ? "succeded" : "failed"));
1028
1029 if (!op->global->durable) {
1030 talloc_free(op);
1031 tevent_req_nterror(req,
1032 NT_STATUS_OBJECT_NAME_NOT_FOUND);
1033 return tevent_req_post(req, ev);
1034 }
1035
1036 status = SMB_VFS_DURABLE_RECONNECT(smb1req->conn,
1037 smb1req,
1038 op, /* smbXsrv_open input */
1039 op->global->backend_cookie,
1040 op, /* TALLOC_CTX */
1041 &result, &new_cookie);
1042 if (!NT_STATUS_IS_OK(status)) {
1043 NTSTATUS return_status;
1044
1045 return_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
1046
1047 DEBUG(3, ("smbd_smb2_create_send: "
1048 "durable_reconnect failed: %s => %s\n",
1049 nt_errstr(status),
1050 nt_errstr(return_status)));
1051
1052 tevent_req_nterror(req, return_status);
1053 return tevent_req_post(req, ev);
1054 }
1055
1056 DEBUG(10, ("result->oplock_type=%u, lease_ptr==%p\n",
1057 (unsigned)result->oplock_type, lease_ptr));
1058
1059 status = smbd_smb2_create_durable_lease_check(
1060 fname, result, lease_ptr);
1061 if (!NT_STATUS_IS_OK(status)) {
1062 close_file(smb1req, result, SHUTDOWN_CLOSE);
1063 tevent_req_nterror(req, status);
1064 return tevent_req_post(req, ev);
1065 }
1066
1067 data_blob_free(&op->global->backend_cookie);
1068 op->global->backend_cookie = new_cookie;
1069
1070 op->status = NT_STATUS_OK;
1071 op->global->disconnect_time = 0;
1072
1073 /* save the timout for later update */
1074 durable_timeout_msec = op->global->durable_timeout_msec;
1075
1076 update_open = true;
1077
1078 info = FILE_WAS_OPENED;
1079 } else {
1080 struct smb_filename *smb_fname = NULL;
1081 uint32_t ucf_flags = UCF_PREP_CREATEFILE;
1082
1083 if (requested_oplock_level == SMB2_OPLOCK_LEVEL_LEASE) {
1084 if (lease_ptr == NULL) {
1085 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
1086 }
1087 } else {
1088 lease_ptr = NULL;
1089 }
1090
1091 /*
1092 * For a DFS path the function parse_dfs_path()
1093 * will do the path processing.
1094 */
1095
1096 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
1097 /* convert '\\' into '/' */
1098 status = check_path_syntax(fname);
1099 if (!NT_STATUS_IS_OK(status)) {
1100 tevent_req_nterror(req, status);
1101 return tevent_req_post(req, ev);
1102 }
1103 }
1104
1105 status = filename_convert(req,
1106 smb1req->conn,
1107 smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
1108 fname,
1109 ucf_flags,
1110 NULL, /* ppath_contains_wcards */
1111 &smb_fname);
1112 if (!NT_STATUS_IS_OK(status)) {
1113 tevent_req_nterror(req, status);
1114 return tevent_req_post(req, ev);
1115 }
1116
1117 /*
1118 * MS-SMB2: 2.2.13 SMB2 CREATE Request
1119 * ImpersonationLevel ... MUST contain one of the
1120 * following values. The server MUST validate this
1121 * field, but otherwise ignore it.
1122 *
1123 * NB. The source4/torture/smb2/durable_open.c test
1124 * shows this check is only done on real opens, not
1125 * on durable handle-reopens.
1126 */
1127
1128 if (in_impersonation_level >
1129 SMB2_IMPERSONATION_DELEGATE) {
1130 tevent_req_nterror(req,
1131 NT_STATUS_BAD_IMPERSONATION_LEVEL);
1132 return tevent_req_post(req, ev);
1133 }
1134
1135 /*
1136 * We know we're going to do a local open, so now
1137 * we must be protocol strict. JRA.
1138 *
1139 * MS-SMB2: 3.3.5.9 - Receiving an SMB2 CREATE Request
1140 * If the file name length is greater than zero and the
1141 * first character is a path separator character, the
1142 * server MUST fail the request with
1143 * STATUS_INVALID_PARAMETER.
1144 */
1145 if (in_name[0] == '\\' || in_name[0] == '/') {
1146 tevent_req_nterror(req,
1147 NT_STATUS_INVALID_PARAMETER);
1148 return tevent_req_post(req, ev);
1149 }
1150
1151 status = SMB_VFS_CREATE_FILE(smb1req->conn,
1152 smb1req,
1153 0, /* root_dir_fid */
1154 smb_fname,
1155 in_desired_access,
1156 in_share_access,
1157 in_create_disposition,
1158 in_create_options,
1159 in_file_attributes,
1160 map_smb2_oplock_levels_to_samba(requested_oplock_level),
1161 lease_ptr,
1162 allocation_size,
1163 0, /* private_flags */
1164 sec_desc,
1165 ea_list,
1166 &result,
1167 &info,
1168 &in_context_blobs,
1169 state->out_context_blobs);
1170 if (!NT_STATUS_IS_OK(status)) {
1171 if (open_was_deferred(smb1req->xconn, smb1req->mid)) {
1172 SMBPROFILE_IOBYTES_ASYNC_SET_IDLE(smb2req->profile);
1173 return req;
1174 }
1175 tevent_req_nterror(req, status);
1176 return tevent_req_post(req, ev);
1177 }
1178 op = result->op;
1179 }
1180
1181 /*
1182 * here we have op == result->op
1183 */
1184
1185 DEBUG(10, ("smbd_smb2_create_send: "
1186 "response construction phase\n"));
1187
1188 if (mxac) {
1189 NTTIME last_write_time;
1190
1191 last_write_time = unix_timespec_to_nt_time(
1192 result->fsp_name->st.st_ex_mtime);
1193 if (last_write_time != max_access_time) {
1194 uint8_t p[8];
1195 uint32_t max_access_granted;
1196 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1197
1198 status = smbd_calculate_access_mask(smb1req->conn,
1199 result->fsp_name,
1200 false,
1201 SEC_FLAG_MAXIMUM_ALLOWED,
1202 &max_access_granted);
1203
1204 SIVAL(p, 0, NT_STATUS_V(status));
1205 SIVAL(p, 4, max_access_granted);
1206
1207 status = smb2_create_blob_add(
1208 state->out_context_blobs,
1209 state->out_context_blobs,
1210 SMB2_CREATE_TAG_MXAC,
1211 blob);
1212 if (!NT_STATUS_IS_OK(status)) {
1213 tevent_req_nterror(req, status);
1214 return tevent_req_post(req, ev);
1215 }
1216 }
1217 }
1218
1219 if (!replay_operation && durable_requested &&
1220 (fsp_lease_type(result) & SMB2_LEASE_HANDLE))
1221 {
1222 status = SMB_VFS_DURABLE_COOKIE(result,
1223 op,
1224 &op->global->backend_cookie);
1225 if (!NT_STATUS_IS_OK(status)) {
1226 op->global->backend_cookie = data_blob_null;
1227 }
1228 }
1229 if (!replay_operation && op->global->backend_cookie.length > 0)
1230 {
1231 update_open = true;
1232
1233 op->global->durable = true;
1234 op->global->durable_timeout_msec = durable_timeout_msec;
1235 }
1236
1237 if (update_open) {
1238 op->global->create_guid = _create_guid;
1239 if (need_replay_cache) {
1240 op->flags |= SMBXSRV_OPEN_NEED_REPLAY_CACHE;
1241 }
1242
1243 status = smbXsrv_open_update(op);
1244 DEBUG(10, ("smb2_create_send: smbXsrv_open_update "
1245 "returned %s\n",
1246 nt_errstr(status)));
1247 if (!NT_STATUS_IS_OK(status)) {
1248 tevent_req_nterror(req, status);
1249 return tevent_req_post(req, ev);
1250 }
1251 }
1252
1253 if (dhnq && op->global->durable) {
1254 uint8_t p[8] = { 0, };
1255 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1256
1257 status = smb2_create_blob_add(state->out_context_blobs,
1258 state->out_context_blobs,
1259 SMB2_CREATE_TAG_DHNQ,
1260 blob);
1261 if (!NT_STATUS_IS_OK(status)) {
1262 tevent_req_nterror(req, status);
1263 return tevent_req_post(req, ev);
1264 }
1265 }
1266
1267 if (dh2q && op->global->durable &&
1268 /*
1269 * For replay operations, we return the dh2q blob
1270 * in the case of oplocks not based on the state of
1271 * the open, but on whether it could have been granted
1272 * for the request data. In the case of leases instead,
1273 * the state of the open is used...
1274 */
1275 (!replay_operation ||
1276 in_oplock_level == SMB2_OPLOCK_LEVEL_BATCH ||
1277 in_oplock_level == SMB2_OPLOCK_LEVEL_LEASE))
1278 {
1279 uint8_t p[8] = { 0, };
1280 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1281 uint32_t durable_v2_response_flags = 0;
1282
1283 SIVAL(p, 0, op->global->durable_timeout_msec);
1284 SIVAL(p, 4, durable_v2_response_flags);
1285
1286 status = smb2_create_blob_add(state->out_context_blobs,
1287 state->out_context_blobs,
1288 SMB2_CREATE_TAG_DH2Q,
1289 blob);
1290 if (!NT_STATUS_IS_OK(status)) {
1291 tevent_req_nterror(req, status);
1292 return tevent_req_post(req, ev);
1293 }
1294 }
1295
1296 if (qfid) {
1297 uint8_t p[32];
1298 uint64_t file_index = get_FileIndex(result->conn,
1299 &result->fsp_name->st);
1300 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1301
1302 ZERO_STRUCT(p);
1303
1304 /* From conversations with Microsoft engineers at
1305 the MS plugfest. The first 8 bytes are the "volume index"
1306 == inode, the second 8 bytes are the "volume id",
1307 == dev. This will be updated in the SMB2 doc. */
1308 SBVAL(p, 0, file_index);
1309 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
1310
1311 status = smb2_create_blob_add(state->out_context_blobs,
1312 state->out_context_blobs,
1313 SMB2_CREATE_TAG_QFID,
1314 blob);
1315 if (!NT_STATUS_IS_OK(status)) {
1316 tevent_req_nterror(req, status);
1317 return tevent_req_post(req, ev);
1318 }
1319 }
1320
1321 if ((rqls != NULL) && (result->oplock_type == LEASE_OPLOCK)) {
1322 uint8_t buf[52];
1323
1324 lease = result->lease->lease;
1325
1326 lease_len = sizeof(buf);
1327 if (lease.lease_version == 1) {
1328 lease_len = 32;
1329 }
1330
1331 if (!smb2_lease_push(&lease, buf, lease_len)) {
1332 tevent_req_nterror(
1333 req, NT_STATUS_INTERNAL_ERROR);
1334 return tevent_req_post(req, ev);
1335 }
1336
1337 status = smb2_create_blob_add(
1338 state, state->out_context_blobs,
1339 SMB2_CREATE_TAG_RQLS,
1340 data_blob_const(buf, lease_len));
1341 if (!NT_STATUS_IS_OK(status)) {
1342 tevent_req_nterror(req, status);
1343 return tevent_req_post(req, ev);
1344 }
1345 }
1346 }
1347
1348 smb2req->compat_chain_fsp = smb1req->chain_fsp;
1349
1350 if (replay_operation) {
1351 state->out_oplock_level = in_oplock_level;
1352 } else if (lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
1353 state->out_oplock_level = in_oplock_level;
1354 } else {
1355 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
1356 }
1357
1358 if ((in_create_disposition == FILE_SUPERSEDE)
1359 && (info == FILE_WAS_OVERWRITTEN)) {
1360 state->out_create_action = FILE_WAS_SUPERSEDED;
1361 } else {
1362 state->out_create_action = info;
1363 }
1364 result->op->create_action = state->out_create_action;
1365 state->out_file_attributes = dos_mode(result->conn,
1366 result->fsp_name);
1367
1368 state->out_creation_ts = get_create_timespec(smb1req->conn,
1369 result, result->fsp_name);
1370 state->out_last_access_ts = result->fsp_name->st.st_ex_atime;
1371 state->out_last_write_ts = result->fsp_name->st.st_ex_mtime;
1372 state->out_change_ts = get_change_timespec(smb1req->conn,
1373 result, result->fsp_name);
1374
1375 if (lp_dos_filetime_resolution(SNUM(smb2req->tcon->compat))) {
1376 dos_filetime_timespec(&state->out_creation_ts);
1377 dos_filetime_timespec(&state->out_last_access_ts);
1378 dos_filetime_timespec(&state->out_last_write_ts);
1379 dos_filetime_timespec(&state->out_change_ts);
1380 }
1381
1382 state->out_allocation_size =
1383 SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
1384 &(result->fsp_name->st));
1385 state->out_end_of_file = result->fsp_name->st.st_ex_size;
1386 if (state->out_file_attributes == 0) {
1387 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
1388 }
1389 state->out_file_id_persistent = result->op->global->open_persistent_id;
1390 state->out_file_id_volatile = result->op->global->open_volatile_id;
1391
1392 DEBUG(10,("smbd_smb2_create_send: %s - %s\n",
1393 fsp_str_dbg(result), fsp_fnum_dbg(result)));
1394
1395 tevent_req_done(req);
1396 return tevent_req_post(req, ev);
1397 }
1398
1399 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
1400 TALLOC_CTX *mem_ctx,
1401 uint8_t *out_oplock_level,
1402 uint32_t *out_create_action,
1403 struct timespec *out_creation_ts,
1404 struct timespec *out_last_access_ts,
1405 struct timespec *out_last_write_ts,
1406 struct timespec *out_change_ts,
1407 uint64_t *out_allocation_size,
1408 uint64_t *out_end_of_file,
1409 uint32_t *out_file_attributes,
1410 uint64_t *out_file_id_persistent,
1411 uint64_t *out_file_id_volatile,
1412 struct smb2_create_blobs *out_context_blobs)
1413 {
1414 NTSTATUS status;
1415 struct smbd_smb2_create_state *state = tevent_req_data(req,
1416 struct smbd_smb2_create_state);
1417
1418 if (tevent_req_is_nterror(req, &status)) {
1419 tevent_req_received(req);
1420 return status;
1421 }
1422
1423 *out_oplock_level = state->out_oplock_level;
1424 *out_create_action = state->out_create_action;
1425 *out_creation_ts = state->out_creation_ts;
1426 *out_last_access_ts = state->out_last_access_ts;
1427 *out_last_write_ts = state->out_last_write_ts;
1428 *out_change_ts = state->out_change_ts;
1429 *out_allocation_size = state->out_allocation_size;
1430 *out_end_of_file = state->out_end_of_file;
1431 *out_file_attributes = state->out_file_attributes;
1432 *out_file_id_persistent = state->out_file_id_persistent;
1433 *out_file_id_volatile = state->out_file_id_volatile;
1434 *out_context_blobs = *(state->out_context_blobs);
1435
1436 talloc_steal(mem_ctx, state->out_context_blobs->blobs);
1437
1438 tevent_req_received(req);
1439 return NT_STATUS_OK;
1440 }
1441
1442 /*********************************************************
1443 Code for dealing with deferred opens.
1444 *********************************************************/
1445
1446 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1447 struct timeval *p_request_time,
1448 struct deferred_open_record **open_rec)
1449 {
1450 struct smbd_smb2_create_state *state = NULL;
1451 struct tevent_req *req = NULL;
1452
1453 if (!smb2req) {
1454 return false;
1455 }
1456 req = smb2req->subreq;
1457 if (!req) {
1458 return false;
1459 }
1460 state = tevent_req_data(req, struct smbd_smb2_create_state);
1461 if (!state) {
1462 return false;
1463 }
1464 if (!state->open_was_deferred) {
1465 return false;
1466 }
1467 if (p_request_time) {
1468 *p_request_time = state->request_time;
1469 }
1470 if (open_rec != NULL) {
1471 *open_rec = state->open_rec;
1472 }
1473 return true;
1474 }
1475
1476 /*********************************************************
1477 Re-process this call early - requested by message or
1478 close.
1479 *********************************************************/
1480
1481 static struct smbd_smb2_request *find_open_smb2req(
1482 struct smbXsrv_connection *xconn, uint64_t mid)
1483 {
1484 struct smbd_smb2_request *smb2req;
1485
1486 for (smb2req = xconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1487 uint64_t message_id;
1488 if (smb2req->subreq == NULL) {
1489 /* This message has been processed. */
1490 continue;
1491 }
1492 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1493 /* This message has been processed. */
1494 continue;
1495 }
1496 message_id = get_mid_from_smb2req(smb2req);
1497 if (message_id == mid) {
1498 return smb2req;
1499 }
1500 }
1501 return NULL;
1502 }
1503
1504 bool open_was_deferred_smb2(struct smbXsrv_connection *xconn, uint64_t mid)
1505 {
1506 struct smbd_smb2_create_state *state = NULL;
1507 struct smbd_smb2_request *smb2req;
1508
1509 smb2req = find_open_smb2req(xconn, mid);
1510
1511 if (!smb2req) {
1512 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1513 (unsigned long long)mid));
1514 return false;
1515 }
1516 if (!smb2req->subreq) {
1517 return false;
1518 }
1519 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1520 return false;
1521 }
1522 state = tevent_req_data(smb2req->subreq,
1523 struct smbd_smb2_create_state);
1524 if (!state) {
1525 return false;
1526 }
1527 /* It's not in progress if there's no timeout event. */
1528 if (!state->open_was_deferred) {
1529 return false;
1530 }
1531
1532 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1533 (unsigned long long)mid));
1534
1535 return true;
1536 }
1537
1538 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1539 uint64_t mid)
1540 {
1541 struct smbd_smb2_create_state *state = NULL;
1542
1543 if (!smb2req->subreq) {
1544 return;
1545 }
1546 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1547 return;
1548 }
1549 state = tevent_req_data(smb2req->subreq,
1550 struct smbd_smb2_create_state);
1551 if (!state) {
1552 return;
1553 }
1554
1555 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1556 "mid %llu\n",
1557 (unsigned long long)mid ));
1558
1559 state->open_was_deferred = false;
1560 /* Ensure we don't have any outstanding timer event. */
1561 TALLOC_FREE(state->te);
1562 /* Ensure we don't have any outstanding immediate event. */
1563 TALLOC_FREE(state->im);
1564 }
1565
1566 void remove_deferred_open_message_smb2(
1567 struct smbXsrv_connection *xconn, uint64_t mid)
1568 {
1569 struct smbd_smb2_request *smb2req;
1570
1571 smb2req = find_open_smb2req(xconn, mid);
1572
1573 if (!smb2req) {
1574 DEBUG(10,("remove_deferred_open_message_smb2: "
1575 "can't find mid %llu\n",
1576 (unsigned long long)mid ));
1577 return;
1578 }
1579 remove_deferred_open_message_smb2_internal(smb2req, mid);
1580 }
1581
1582 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1583 struct tevent_immediate *im,
1584 void *private_data)
1585 {
1586 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1587 struct smbd_smb2_request);
1588 uint64_t mid = get_mid_from_smb2req(smb2req);
1589 NTSTATUS status;
1590
1591 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1592 "re-dispatching mid %llu\n",
1593 (unsigned long long)mid ));
1594
1595 status = smbd_smb2_request_dispatch(smb2req);
1596 if (!NT_STATUS_IS_OK(status)) {
1597 smbd_server_connection_terminate(smb2req->xconn,
1598 nt_errstr(status));
1599 return;
1600 }
1601 }
1602
1603 bool schedule_deferred_open_message_smb2(
1604 struct smbXsrv_connection *xconn, uint64_t mid)
1605 {
1606 struct smbd_smb2_create_state *state = NULL;
1607 struct smbd_smb2_request *smb2req;
1608
1609 smb2req = find_open_smb2req(xconn, mid);
1610
1611 if (!smb2req) {
1612 DEBUG(10,("schedule_deferred_open_message_smb2: "
1613 "can't find mid %llu\n",
1614 (unsigned long long)mid ));
1615 return false;
1616 }
1617 if (!smb2req->subreq) {
1618 return false;
1619 }
1620 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1621 return false;
1622 }
1623 state = tevent_req_data(smb2req->subreq,
1624 struct smbd_smb2_create_state);
1625 if (!state) {
1626 return false;
1627 }
1628
1629 /* Ensure we don't have any outstanding timer event. */
1630 TALLOC_FREE(state->te);
1631 /* Ensure we don't have any outstanding immediate event. */
1632 TALLOC_FREE(state->im);
1633
1634 /*
1635 * This is subtle. We must null out the callback
1636 * before rescheduling, else the first call to
1637 * tevent_req_nterror() causes the _receive()
1638 * function to be called, this causing tevent_req_post()
1639 * to crash.
1640 */
1641 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1642
1643 state->im = tevent_create_immediate(smb2req);
1644 if (!state->im) {
1645 smbd_server_connection_terminate(smb2req->xconn,
1646 nt_errstr(NT_STATUS_NO_MEMORY));
1647 return false;
1648 }
1649
1650 DEBUG(10,("schedule_deferred_open_message_smb2: "
1651 "re-processing mid %llu\n",
1652 (unsigned long long)mid ));
1653
1654 tevent_schedule_immediate(state->im,
1655 smb2req->sconn->ev_ctx,
1656 smbd_smb2_create_request_dispatch_immediate,
1657 smb2req);
1658
1659 return true;
1660 }
1661
1662 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1663 {
1664 struct smbd_smb2_request *smb2req = NULL;
1665 struct smbd_smb2_create_state *state = tevent_req_data(req,
1666 struct smbd_smb2_create_state);
1667 uint64_t mid;
1668
1669 if (!state) {
1670 return false;
1671 }
1672
1673 if (!state->smb2req) {
1674 return false;
1675 }
1676
1677 smb2req = state->smb2req;
1678 mid = get_mid_from_smb2req(smb2req);
1679
1680 if (is_deferred_open_async(state->open_rec)) {
1681 /* Can't cancel an async create. */
1682 return false;
1683 }
1684
1685 remove_deferred_open_message_smb2_internal(smb2req, mid);
1686
1687 tevent_req_defer_callback(req, smb2req->sconn->ev_ctx);
1688 tevent_req_nterror(req, NT_STATUS_CANCELLED);
1689 return true;
1690 }
1691
1692 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1693 struct timeval request_time,
1694 struct timeval timeout,
1695 struct file_id id,
1696 struct deferred_open_record *open_rec)
1697 {
1698 struct tevent_req *req = NULL;
1699 struct smbd_smb2_create_state *state = NULL;
1700 struct timeval end_time;
1701
1702 if (!smb2req) {
1703 return false;
1704 }
1705 req = smb2req->subreq;
1706 if (!req) {
1707 return false;
1708 }
1709 state = tevent_req_data(req, struct smbd_smb2_create_state);
1710 if (!state) {
1711 return false;
1712 }
1713 state->id = id;
1714 state->request_time = request_time;
1715 state->open_rec = talloc_move(state, &open_rec);
1716
1717 /* Re-schedule us to retry on timer expiry. */
1718 end_time = timeval_sum(&request_time, &timeout);
1719
1720 DEBUG(10,("push_deferred_open_message_smb2: "
1721 "timeout at %s\n",
1722 timeval_string(talloc_tos(),
1723 &end_time,
1724 true) ));
1725
1726 state->open_was_deferred = true;
1727
1728 /* allow this request to be canceled */
1729 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1730
1731 return true;
1732 }
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