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auth4: avoid map_user_info() in auth_check_password_send()
[Samba.git] / source3 / smbd / smb2_create.c
blobcba0781430ecb20c7285e36fe36f2e8e5d89d93c
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(struct smb_request *smb1req,
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;
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 ucf_flags = filename_create_ucf_flags(smb1req, FILE_OPEN);
408 status = filename_convert(talloc_tos(), fsp->conn, false,
409 requested_filename, ucf_flags,
410 NULL, &smb_fname);
411 if (!NT_STATUS_IS_OK(status)) {
412 DEBUG(10, ("filename_convert returned %s\n",
413 nt_errstr(status)));
414 return status;
415 }
416
417 if (!strequal(fsp->fsp_name->base_name, smb_fname->base_name)) {
418 DEBUG(10, ("Lease requested for file %s, reopened file "
419 "is named %s\n", smb_fname->base_name,
420 fsp->fsp_name->base_name));
421 TALLOC_FREE(smb_fname);
422 return NT_STATUS_INVALID_PARAMETER;
423 }
424
425 TALLOC_FREE(smb_fname);
426
427 return NT_STATUS_OK;
428 }
429
430 struct smbd_smb2_create_state {
431 struct smbd_smb2_request *smb2req;
432 struct smb_request *smb1req;
433 bool open_was_deferred;
434 struct tevent_timer *te;
435 struct tevent_immediate *im;
436 struct timeval request_time;
437 struct file_id id;
438 struct deferred_open_record *open_rec;
439 uint8_t out_oplock_level;
440 uint32_t out_create_action;
441 struct timespec out_creation_ts;
442 struct timespec out_last_access_ts;
443 struct timespec out_last_write_ts;
444 struct timespec out_change_ts;
445 uint64_t out_allocation_size;
446 uint64_t out_end_of_file;
447 uint32_t out_file_attributes;
448 uint64_t out_file_id_persistent;
449 uint64_t out_file_id_volatile;
450 struct smb2_create_blobs *out_context_blobs;
451 };
452
453 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
454 struct tevent_context *ev,
455 struct smbd_smb2_request *smb2req,
456 uint8_t in_oplock_level,
457 uint32_t in_impersonation_level,
458 uint32_t in_desired_access,
459 uint32_t in_file_attributes,
460 uint32_t in_share_access,
461 uint32_t in_create_disposition,
462 uint32_t in_create_options,
463 const char *in_name,
464 struct smb2_create_blobs in_context_blobs)
465 {
466 struct tevent_req *req = NULL;
467 struct smbd_smb2_create_state *state = NULL;
468 NTSTATUS status;
469 struct smb_request *smb1req = NULL;
470 files_struct *result = NULL;
471 int info;
472 int requested_oplock_level;
473 struct smb2_create_blob *dhnc = NULL;
474 struct smb2_create_blob *dh2c = NULL;
475 struct smb2_create_blob *dhnq = NULL;
476 struct smb2_create_blob *dh2q = NULL;
477 struct smb2_create_blob *rqls = NULL;
478 bool replay_operation = false;
479
480 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
481 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
482 } else {
483 requested_oplock_level = in_oplock_level;
484 }
485
486
487 if (smb2req->subreq == NULL) {
488 /* New create call. */
489 req = tevent_req_create(mem_ctx, &state,
490 struct smbd_smb2_create_state);
491 if (req == NULL) {
492 return NULL;
493 }
494 state->smb2req = smb2req;
495
496 smb1req = smbd_smb2_fake_smb_request(smb2req);
497 if (tevent_req_nomem(smb1req, req)) {
498 return tevent_req_post(req, ev);
499 }
500 state->smb1req = smb1req;
501 smb2req->subreq = req;
502 DEBUG(10,("smbd_smb2_create: name[%s]\n",
503 in_name));
504 } else {
505 /* Re-entrant create call. */
506 req = smb2req->subreq;
507 state = tevent_req_data(req,
508 struct smbd_smb2_create_state);
509 smb1req = state->smb1req;
510 TALLOC_FREE(state->out_context_blobs);
511 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
512 in_name ));
513 }
514
515 state->out_context_blobs = talloc_zero(state, struct smb2_create_blobs);
516 if (tevent_req_nomem(state->out_context_blobs, req)) {
517 return tevent_req_post(req, ev);
518 }
519
520 dhnq = smb2_create_blob_find(&in_context_blobs,
521 SMB2_CREATE_TAG_DHNQ);
522 dhnc = smb2_create_blob_find(&in_context_blobs,
523 SMB2_CREATE_TAG_DHNC);
524 dh2q = smb2_create_blob_find(&in_context_blobs,
525 SMB2_CREATE_TAG_DH2Q);
526 dh2c = smb2_create_blob_find(&in_context_blobs,
527 SMB2_CREATE_TAG_DH2C);
528 if (smb2req->xconn->smb2.server.capabilities & SMB2_CAP_LEASING) {
529 rqls = smb2_create_blob_find(&in_context_blobs,
530 SMB2_CREATE_TAG_RQLS);
531 }
532
533 if ((dhnc && dh2c) || (dhnc && dh2q) || (dh2c && dhnq) ||
534 (dh2q && dh2c))
535 {
536 /* not both are allowed at the same time */
537 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
538 return tevent_req_post(req, ev);
539 }
540
541 if (dhnc) {
542 uint32_t num_blobs_allowed;
543
544 if (dhnc->data.length != 16) {
545 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
546 return tevent_req_post(req, ev);
547 }
548
549 /*
550 * According to MS-SMB2: 3.3.5.9.7, "Handling the
551 * SMB2_CREATE_DURABLE_HANDLE_RECONNECT Create Context",
552 * we should ignore an additional dhnq blob, but fail
553 * the request (with status OBJECT_NAME_NOT_FOUND) if
554 * any other extra create blob has been provided.
555 *
556 * (Note that the cases of an additional dh2q or dh2c blob
557 * which require a different error code, have been treated
558 * above.)
559 */
560
561 if (dhnq) {
562 num_blobs_allowed = 2;
563 } else {
564 num_blobs_allowed = 1;
565 }
566
567 if (rqls != NULL) {
568 num_blobs_allowed += 1;
569 }
570
571 if (in_context_blobs.num_blobs != num_blobs_allowed) {
572 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
573 return tevent_req_post(req, ev);
574 }
575 }
576
577 if (dh2c) {
578 uint32_t num_blobs_allowed;
579
580 if (dh2c->data.length != 36) {
581 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
582 return tevent_req_post(req, ev);
583 }
584
585 /*
586 * According to MS-SMB2: 3.3.5.9.12, "Handling the
587 * SMB2_CREATE_DURABLE_HANDLE_RECONNECT_V2 Create Context",
588 * we should fail the request with status
589 * OBJECT_NAME_NOT_FOUND if any other create blob has been
590 * provided.
591 *
592 * (Note that the cases of an additional dhnq, dhnc or dh2q
593 * blob which require a different error code, have been
594 * treated above.)
595 */
596
597 num_blobs_allowed = 1;
598
599 if (rqls != NULL) {
600 num_blobs_allowed += 1;
601 }
602
603 if (in_context_blobs.num_blobs != num_blobs_allowed) {
604 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
605 return tevent_req_post(req, ev);
606 }
607 }
608
609 if (IS_IPC(smb1req->conn)) {
610 const char *pipe_name = in_name;
611
612 if (dhnc || dh2c) {
613 /* durable handles are not supported on IPC$ */
614 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
615 return tevent_req_post(req, ev);
616 }
617
618 if (!lp_nt_pipe_support()) {
619 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
620 return tevent_req_post(req, ev);
621 }
622
623 status = open_np_file(smb1req, pipe_name, &result);
624 if (!NT_STATUS_IS_OK(status)) {
625 tevent_req_nterror(req, status);
626 return tevent_req_post(req, ev);
627 }
628 info = FILE_WAS_OPENED;
629 } else if (CAN_PRINT(smb1req->conn)) {
630 if (dhnc || dh2c) {
631 /* durable handles are not supported on printers */
632 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
633 return tevent_req_post(req, ev);
634 }
635
636 status = file_new(smb1req, smb1req->conn, &result);
637 if(!NT_STATUS_IS_OK(status)) {
638 tevent_req_nterror(req, status);
639 return tevent_req_post(req, ev);
640 }
641
642 status = print_spool_open(result, in_name,
643 smb1req->vuid);
644 if (!NT_STATUS_IS_OK(status)) {
645 file_free(smb1req, result);
646 tevent_req_nterror(req, status);
647 return tevent_req_post(req, ev);
648 }
649 info = FILE_WAS_CREATED;
650 } else {
651 char *fname;
652 struct smb2_create_blob *exta = NULL;
653 struct ea_list *ea_list = NULL;
654 struct smb2_create_blob *mxac = NULL;
655 NTTIME max_access_time = 0;
656 struct smb2_create_blob *secd = NULL;
657 struct security_descriptor *sec_desc = NULL;
658 struct smb2_create_blob *alsi = NULL;
659 uint64_t allocation_size = 0;
660 struct smb2_create_blob *twrp = NULL;
661 struct smb2_create_blob *qfid = NULL;
662 struct GUID _create_guid = GUID_zero();
663 struct GUID *create_guid = NULL;
664 bool update_open = false;
665 bool durable_requested = false;
666 uint32_t durable_timeout_msec = 0;
667 bool do_durable_reconnect = false;
668 uint64_t persistent_id = 0;
669 struct smb2_lease lease;
670 struct smb2_lease *lease_ptr = NULL;
671 ssize_t lease_len = -1;
672 bool need_replay_cache = false;
673 struct smbXsrv_open *op = NULL;
674 #if 0
675 struct smb2_create_blob *svhdx = NULL;
676 #endif
677
678 exta = smb2_create_blob_find(&in_context_blobs,
679 SMB2_CREATE_TAG_EXTA);
680 mxac = smb2_create_blob_find(&in_context_blobs,
681 SMB2_CREATE_TAG_MXAC);
682 secd = smb2_create_blob_find(&in_context_blobs,
683 SMB2_CREATE_TAG_SECD);
684 alsi = smb2_create_blob_find(&in_context_blobs,
685 SMB2_CREATE_TAG_ALSI);
686 twrp = smb2_create_blob_find(&in_context_blobs,
687 SMB2_CREATE_TAG_TWRP);
688 qfid = smb2_create_blob_find(&in_context_blobs,
689 SMB2_CREATE_TAG_QFID);
690 #if 0
691 if (smb2req->xconn->protocol >= PROTOCOL_SMB3_02) {
692 /*
693 * This was introduced with SMB3_02
694 */
695 svhdx = smb2_create_blob_find(&in_context_blobs,
696 SVHDX_OPEN_DEVICE_CONTEXT);
697 }
698 #endif
699
700 fname = talloc_strdup(state, in_name);
701 if (tevent_req_nomem(fname, req)) {
702 return tevent_req_post(req, ev);
703 }
704
705 if (exta) {
706 if (!lp_ea_support(SNUM(smb2req->tcon->compat))) {
707 tevent_req_nterror(req,
708 NT_STATUS_EAS_NOT_SUPPORTED);
709 return tevent_req_post(req, ev);
710 }
711
712 ea_list = read_nttrans_ea_list(mem_ctx,
713 (const char *)exta->data.data, exta->data.length);
714 if (!ea_list) {
715 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
716 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
717 return tevent_req_post(req, ev);
718 }
719
720 /*
721 * NB. When SMB2+ unix extensions are added,
722 * we need to relax this check in invalid
723 * names - we used to not do this if
724 * lp_posix_pathnames() was false.
725 */
726 if (ea_list_has_invalid_name(ea_list)) {
727 tevent_req_nterror(req, STATUS_INVALID_EA_NAME);
728 return tevent_req_post(req, ev);
729 }
730 }
731
732 if (mxac) {
733 if (mxac->data.length == 0) {
734 max_access_time = 0;
735 } else if (mxac->data.length == 8) {
736 max_access_time = BVAL(mxac->data.data, 0);
737 } else {
738 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
739 return tevent_req_post(req, ev);
740 }
741 }
742
743 if (secd) {
744 enum ndr_err_code ndr_err;
745
746 sec_desc = talloc_zero(state, struct security_descriptor);
747 if (tevent_req_nomem(sec_desc, req)) {
748 return tevent_req_post(req, ev);
749 }
750
751 ndr_err = ndr_pull_struct_blob(&secd->data,
752 sec_desc, sec_desc,
753 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
754 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
755 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
756 ndr_errstr(ndr_err)));
757 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
758 return tevent_req_post(req, ev);
759 }
760 }
761
762 if (dhnq) {
763 if (dhnq->data.length != 16) {
764 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
765 return tevent_req_post(req, ev);
766 }
767
768 if (dh2q) {
769 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
770 return tevent_req_post(req, ev);
771 }
772
773 /*
774 * durable handle request is processed below.
775 */
776 durable_requested = true;
777 /*
778 * Set the timeout to 16 mins.
779 *
780 * TODO: test this against Windows 2012
781 * as the default for durable v2 is 1 min.
782 */
783 durable_timeout_msec = (16*60*1000);
784 }
785
786 if (dh2q) {
787 const uint8_t *p = dh2q->data.data;
788 uint32_t durable_v2_timeout = 0;
789 DATA_BLOB create_guid_blob;
790 const uint8_t *hdr;
791 uint32_t flags;
792
793 if (dh2q->data.length != 32) {
794 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
795 return tevent_req_post(req, ev);
796 }
797
798 if (dhnq) {
799 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
800 return tevent_req_post(req, ev);
801 }
802
803 durable_v2_timeout = IVAL(p, 0);
804 create_guid_blob = data_blob_const(p + 16, 16);
805
806 status = GUID_from_ndr_blob(&create_guid_blob,
807 &_create_guid);
808 if (tevent_req_nterror(req, status)) {
809 return tevent_req_post(req, ev);
810 }
811 create_guid = &_create_guid;
812 /*
813 * we need to store the create_guid later
814 */
815 update_open = true;
816
817 /*
818 * And we need to create a cache for replaying the
819 * create.
820 */
821 need_replay_cache = true;
822
823 /*
824 * durable handle v2 request processed below
825 */
826 durable_requested = true;
827 durable_timeout_msec = durable_v2_timeout;
828 if (durable_timeout_msec == 0) {
829 /*
830 * Set the timeout to 1 min as default.
831 *
832 * This matches Windows 2012.
833 */
834 durable_timeout_msec = (60*1000);
835 }
836
837 /*
838 * Check for replay operation.
839 * Only consider it when we have dh2q.
840 * If we do not have a replay operation, verify that
841 * the create_guid is not cached for replay.
842 */
843 hdr = SMBD_SMB2_IN_HDR_PTR(smb2req);
844 flags = IVAL(hdr, SMB2_HDR_FLAGS);
845 replay_operation =
846 flags & SMB2_HDR_FLAG_REPLAY_OPERATION;
847
848 status = smb2srv_open_lookup_replay_cache(
849 smb2req->xconn, create_guid,
850 0 /* now */, &op);
851
852 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
853 replay_operation = false;
854 } else if (tevent_req_nterror(req, status)) {
855 DBG_WARNING("smb2srv_open_lookup_replay_cache "
856 "failed: %s\n", nt_errstr(status));
857 return tevent_req_post(req, ev);
858 } else if (!replay_operation) {
859 /*
860 * If a create without replay operation flag
861 * is sent but with a create_guid that is
862 * currently in the replay cache -- fail.
863 */
864 status = NT_STATUS_DUPLICATE_OBJECTID;
865 (void)tevent_req_nterror(req, status);
866 return tevent_req_post(req, ev);
867 }
868 }
869
870 if (dhnc) {
871 persistent_id = BVAL(dhnc->data.data, 0);
872
873 do_durable_reconnect = true;
874 }
875
876 if (dh2c) {
877 const uint8_t *p = dh2c->data.data;
878 DATA_BLOB create_guid_blob;
879
880 persistent_id = BVAL(p, 0);
881 create_guid_blob = data_blob_const(p + 16, 16);
882
883 status = GUID_from_ndr_blob(&create_guid_blob,
884 &_create_guid);
885 if (tevent_req_nterror(req, status)) {
886 return tevent_req_post(req, ev);
887 }
888 create_guid = &_create_guid;
889
890 do_durable_reconnect = true;
891 }
892
893 if (alsi) {
894 if (alsi->data.length != 8) {
895 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
896 return tevent_req_post(req, ev);
897 }
898 allocation_size = BVAL(alsi->data.data, 0);
899 }
900
901 if (twrp) {
902 NTTIME nttime;
903 time_t t;
904 struct tm *tm;
905
906 if (twrp->data.length != 8) {
907 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
908 return tevent_req_post(req, ev);
909 }
910
911 nttime = BVAL(twrp->data.data, 0);
912 t = nt_time_to_unix(nttime);
913 tm = gmtime(&t);
914
915 TALLOC_FREE(fname);
916 fname = talloc_asprintf(state,
917 "%s\\@GMT-%04u.%02u.%02u-%02u.%02u.%02u",
918 in_name,
919 tm->tm_year + 1900,
920 tm->tm_mon + 1,
921 tm->tm_mday,
922 tm->tm_hour,
923 tm->tm_min,
924 tm->tm_sec);
925 if (tevent_req_nomem(fname, req)) {
926 return tevent_req_post(req, ev);
927 }
928 }
929
930 if (qfid) {
931 if (qfid->data.length != 0) {
932 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
933 return tevent_req_post(req, ev);
934 }
935 }
936
937 if (rqls) {
938 lease_len = smb2_lease_pull(
939 rqls->data.data, rqls->data.length, &lease);
940 if (lease_len == -1) {
941 tevent_req_nterror(
942 req, NT_STATUS_INVALID_PARAMETER);
943 return tevent_req_post(req, ev);
944 }
945 lease_ptr = &lease;
946
947 if (DEBUGLEVEL >= 10) {
948 DEBUG(10, ("Got lease request size %d\n",
949 (int)lease_len));
950 NDR_PRINT_DEBUG(smb2_lease, lease_ptr);
951 }
952
953 if (!smb2_lease_key_valid(&lease.lease_key)) {
954 lease_ptr = NULL;
955 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
956 }
957
958 if ((smb2req->xconn->protocol < PROTOCOL_SMB3_00) &&
959 (lease.lease_version != 1)) {
960 DEBUG(10, ("v2 lease key only for SMB3\n"));
961 lease_ptr = NULL;
962 }
963
964 /*
965 * Replay with a lease is only allowed if the
966 * established open carries a lease with the
967 * same lease key.
968 */
969 if (replay_operation) {
970 struct smb2_lease *op_ls =
971 &op->compat->lease->lease;
972 int op_oplock = op->compat->oplock_type;
973
974 if (map_samba_oplock_levels_to_smb2(op_oplock)
975 != SMB2_OPLOCK_LEVEL_LEASE)
976 {
977 status = NT_STATUS_ACCESS_DENIED;
978 (void)tevent_req_nterror(req, status);
979 return tevent_req_post(req, ev);
980 }
981 if (!smb2_lease_key_equal(&lease.lease_key,
982 &op_ls->lease_key))
983 {
984 status = NT_STATUS_ACCESS_DENIED;
985 (void)tevent_req_nterror(req, status);
986 return tevent_req_post(req, ev);
987 }
988 }
989 }
990
991 /* these are ignored for SMB2 */
992 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
993 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
994
995 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
996
997 DEBUG(10, ("smbd_smb2_create_send: open execution phase\n"));
998
999 /*
1000 * For the backend file open procedure, there are
1001 * three possible modes: replay operation (in which case
1002 * there is nothing else to do), durable_reconnect or
1003 * new open.
1004 */
1005 if (replay_operation) {
1006 result = op->compat;
1007 result->op = op;
1008 update_open = false;
1009 info = op->create_action;
1010 } else if (do_durable_reconnect) {
1011 DATA_BLOB new_cookie = data_blob_null;
1012 NTTIME now = timeval_to_nttime(&smb2req->request_time);
1013
1014 status = smb2srv_open_recreate(smb2req->xconn,
1015 smb1req->conn->session_info,
1016 persistent_id, create_guid,
1017 now, &op);
1018 if (!NT_STATUS_IS_OK(status)) {
1019 DEBUG(3, ("smbd_smb2_create_send: "
1020 "smb2srv_open_recreate failed: %s\n",
1021 nt_errstr(status)));
1022 tevent_req_nterror(req, status);
1023 return tevent_req_post(req, ev);
1024 }
1025
1026 DEBUG(10, ("smb2_create_send: %s to recreate the "
1027 "smb2srv_open struct for a durable handle.\n",
1028 op->global->durable ? "succeeded" : "failed"));
1029
1030 if (!op->global->durable) {
1031 talloc_free(op);
1032 tevent_req_nterror(req,
1033 NT_STATUS_OBJECT_NAME_NOT_FOUND);
1034 return tevent_req_post(req, ev);
1035 }
1036
1037 status = SMB_VFS_DURABLE_RECONNECT(smb1req->conn,
1038 smb1req,
1039 op, /* smbXsrv_open input */
1040 op->global->backend_cookie,
1041 op, /* TALLOC_CTX */
1042 &result, &new_cookie);
1043 if (!NT_STATUS_IS_OK(status)) {
1044 NTSTATUS return_status;
1045
1046 return_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
1047
1048 DEBUG(3, ("smbd_smb2_create_send: "
1049 "durable_reconnect failed: %s => %s\n",
1050 nt_errstr(status),
1051 nt_errstr(return_status)));
1052
1053 tevent_req_nterror(req, return_status);
1054 return tevent_req_post(req, ev);
1055 }
1056
1057 DEBUG(10, ("result->oplock_type=%u, lease_ptr==%p\n",
1058 (unsigned)result->oplock_type, lease_ptr));
1059
1060 status = smbd_smb2_create_durable_lease_check(
1061 smb1req, fname, result, lease_ptr);
1062 if (!NT_STATUS_IS_OK(status)) {
1063 close_file(smb1req, result, SHUTDOWN_CLOSE);
1064 tevent_req_nterror(req, status);
1065 return tevent_req_post(req, ev);
1066 }
1067
1068 data_blob_free(&op->global->backend_cookie);
1069 op->global->backend_cookie = new_cookie;
1070
1071 op->status = NT_STATUS_OK;
1072 op->global->disconnect_time = 0;
1073
1074 /* save the timout for later update */
1075 durable_timeout_msec = op->global->durable_timeout_msec;
1076
1077 update_open = true;
1078
1079 info = FILE_WAS_OPENED;
1080 } else {
1081 struct smb_filename *smb_fname = NULL;
1082 uint32_t ucf_flags;
1083
1084 if (requested_oplock_level == SMB2_OPLOCK_LEVEL_LEASE) {
1085 if (lease_ptr == NULL) {
1086 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
1087 }
1088 } else {
1089 lease_ptr = NULL;
1090 }
1091
1092 /*
1093 * For a DFS path the function parse_dfs_path()
1094 * will do the path processing.
1095 */
1096
1097 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
1098 /* convert '\\' into '/' */
1099 status = check_path_syntax(fname);
1100 if (!NT_STATUS_IS_OK(status)) {
1101 tevent_req_nterror(req, status);
1102 return tevent_req_post(req, ev);
1103 }
1104 }
1105
1106 ucf_flags = filename_create_ucf_flags(smb1req, in_create_disposition);
1107 status = filename_convert(req,
1108 smb1req->conn,
1109 smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
1110 fname,
1111 ucf_flags,
1112 NULL, /* ppath_contains_wcards */
1113 &smb_fname);
1114 if (!NT_STATUS_IS_OK(status)) {
1115 tevent_req_nterror(req, status);
1116 return tevent_req_post(req, ev);
1117 }
1118
1119 /*
1120 * MS-SMB2: 2.2.13 SMB2 CREATE Request
1121 * ImpersonationLevel ... MUST contain one of the
1122 * following values. The server MUST validate this
1123 * field, but otherwise ignore it.
1124 *
1125 * NB. The source4/torture/smb2/durable_open.c test
1126 * shows this check is only done on real opens, not
1127 * on durable handle-reopens.
1128 */
1129
1130 if (in_impersonation_level >
1131 SMB2_IMPERSONATION_DELEGATE) {
1132 tevent_req_nterror(req,
1133 NT_STATUS_BAD_IMPERSONATION_LEVEL);
1134 return tevent_req_post(req, ev);
1135 }
1136
1137 /*
1138 * We know we're going to do a local open, so now
1139 * we must be protocol strict. JRA.
1140 *
1141 * MS-SMB2: 3.3.5.9 - Receiving an SMB2 CREATE Request
1142 * If the file name length is greater than zero and the
1143 * first character is a path separator character, the
1144 * server MUST fail the request with
1145 * STATUS_INVALID_PARAMETER.
1146 */
1147 if (in_name[0] == '\\' || in_name[0] == '/') {
1148 tevent_req_nterror(req,
1149 NT_STATUS_INVALID_PARAMETER);
1150 return tevent_req_post(req, ev);
1151 }
1152
1153 status = SMB_VFS_CREATE_FILE(smb1req->conn,
1154 smb1req,
1155 0, /* root_dir_fid */
1156 smb_fname,
1157 in_desired_access,
1158 in_share_access,
1159 in_create_disposition,
1160 in_create_options,
1161 in_file_attributes,
1162 map_smb2_oplock_levels_to_samba(requested_oplock_level),
1163 lease_ptr,
1164 allocation_size,
1165 0, /* private_flags */
1166 sec_desc,
1167 ea_list,
1168 &result,
1169 &info,
1170 &in_context_blobs,
1171 state->out_context_blobs);
1172 if (!NT_STATUS_IS_OK(status)) {
1173 if (open_was_deferred(smb1req->xconn, smb1req->mid)) {
1174 SMBPROFILE_IOBYTES_ASYNC_SET_IDLE(smb2req->profile);
1175 return req;
1176 }
1177 tevent_req_nterror(req, status);
1178 return tevent_req_post(req, ev);
1179 }
1180 op = result->op;
1181 }
1182
1183 /*
1184 * here we have op == result->op
1185 */
1186
1187 DEBUG(10, ("smbd_smb2_create_send: "
1188 "response construction phase\n"));
1189
1190 if (mxac) {
1191 NTTIME last_write_time;
1192
1193 last_write_time = unix_timespec_to_nt_time(
1194 result->fsp_name->st.st_ex_mtime);
1195 if (last_write_time != max_access_time) {
1196 uint8_t p[8];
1197 uint32_t max_access_granted;
1198 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1199
1200 status = smbd_calculate_access_mask(smb1req->conn,
1201 result->fsp_name,
1202 false,
1203 SEC_FLAG_MAXIMUM_ALLOWED,
1204 &max_access_granted);
1205
1206 SIVAL(p, 0, NT_STATUS_V(status));
1207 SIVAL(p, 4, max_access_granted);
1208
1209 status = smb2_create_blob_add(
1210 state->out_context_blobs,
1211 state->out_context_blobs,
1212 SMB2_CREATE_TAG_MXAC,
1213 blob);
1214 if (!NT_STATUS_IS_OK(status)) {
1215 tevent_req_nterror(req, status);
1216 return tevent_req_post(req, ev);
1217 }
1218 }
1219 }
1220
1221 if (!replay_operation && durable_requested &&
1222 (fsp_lease_type(result) & SMB2_LEASE_HANDLE))
1223 {
1224 status = SMB_VFS_DURABLE_COOKIE(result,
1225 op,
1226 &op->global->backend_cookie);
1227 if (!NT_STATUS_IS_OK(status)) {
1228 op->global->backend_cookie = data_blob_null;
1229 }
1230 }
1231 if (!replay_operation && op->global->backend_cookie.length > 0)
1232 {
1233 update_open = true;
1234
1235 op->global->durable = true;
1236 op->global->durable_timeout_msec = durable_timeout_msec;
1237 }
1238
1239 if (update_open) {
1240 op->global->create_guid = _create_guid;
1241 if (need_replay_cache) {
1242 op->flags |= SMBXSRV_OPEN_NEED_REPLAY_CACHE;
1243 }
1244
1245 status = smbXsrv_open_update(op);
1246 DEBUG(10, ("smb2_create_send: smbXsrv_open_update "
1247 "returned %s\n",
1248 nt_errstr(status)));
1249 if (!NT_STATUS_IS_OK(status)) {
1250 tevent_req_nterror(req, status);
1251 return tevent_req_post(req, ev);
1252 }
1253 }
1254
1255 if (dhnq && op->global->durable) {
1256 uint8_t p[8] = { 0, };
1257 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1258
1259 status = smb2_create_blob_add(state->out_context_blobs,
1260 state->out_context_blobs,
1261 SMB2_CREATE_TAG_DHNQ,
1262 blob);
1263 if (!NT_STATUS_IS_OK(status)) {
1264 tevent_req_nterror(req, status);
1265 return tevent_req_post(req, ev);
1266 }
1267 }
1268
1269 if (dh2q && op->global->durable &&
1270 /*
1271 * For replay operations, we return the dh2q blob
1272 * in the case of oplocks not based on the state of
1273 * the open, but on whether it could have been granted
1274 * for the request data. In the case of leases instead,
1275 * the state of the open is used...
1276 */
1277 (!replay_operation ||
1278 in_oplock_level == SMB2_OPLOCK_LEVEL_BATCH ||
1279 in_oplock_level == SMB2_OPLOCK_LEVEL_LEASE))
1280 {
1281 uint8_t p[8] = { 0, };
1282 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1283 uint32_t durable_v2_response_flags = 0;
1284
1285 SIVAL(p, 0, op->global->durable_timeout_msec);
1286 SIVAL(p, 4, durable_v2_response_flags);
1287
1288 status = smb2_create_blob_add(state->out_context_blobs,
1289 state->out_context_blobs,
1290 SMB2_CREATE_TAG_DH2Q,
1291 blob);
1292 if (!NT_STATUS_IS_OK(status)) {
1293 tevent_req_nterror(req, status);
1294 return tevent_req_post(req, ev);
1295 }
1296 }
1297
1298 if (qfid) {
1299 uint8_t p[32];
1300 uint64_t file_index = get_FileIndex(result->conn,
1301 &result->fsp_name->st);
1302 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1303
1304 ZERO_STRUCT(p);
1305
1306 /* From conversations with Microsoft engineers at
1307 the MS plugfest. The first 8 bytes are the "volume index"
1308 == inode, the second 8 bytes are the "volume id",
1309 == dev. This will be updated in the SMB2 doc. */
1310 SBVAL(p, 0, file_index);
1311 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
1312
1313 status = smb2_create_blob_add(state->out_context_blobs,
1314 state->out_context_blobs,
1315 SMB2_CREATE_TAG_QFID,
1316 blob);
1317 if (!NT_STATUS_IS_OK(status)) {
1318 tevent_req_nterror(req, status);
1319 return tevent_req_post(req, ev);
1320 }
1321 }
1322
1323 if ((rqls != NULL) && (result->oplock_type == LEASE_OPLOCK)) {
1324 uint8_t buf[52];
1325
1326 lease = result->lease->lease;
1327
1328 lease_len = sizeof(buf);
1329 if (lease.lease_version == 1) {
1330 lease_len = 32;
1331 }
1332
1333 if (!smb2_lease_push(&lease, buf, lease_len)) {
1334 tevent_req_nterror(
1335 req, NT_STATUS_INTERNAL_ERROR);
1336 return tevent_req_post(req, ev);
1337 }
1338
1339 status = smb2_create_blob_add(
1340 state, state->out_context_blobs,
1341 SMB2_CREATE_TAG_RQLS,
1342 data_blob_const(buf, lease_len));
1343 if (!NT_STATUS_IS_OK(status)) {
1344 tevent_req_nterror(req, status);
1345 return tevent_req_post(req, ev);
1346 }
1347 }
1348 }
1349
1350 smb2req->compat_chain_fsp = smb1req->chain_fsp;
1351
1352 if (replay_operation) {
1353 state->out_oplock_level = in_oplock_level;
1354 } else if (lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
1355 state->out_oplock_level = in_oplock_level;
1356 } else {
1357 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
1358 }
1359
1360 if ((in_create_disposition == FILE_SUPERSEDE)
1361 && (info == FILE_WAS_OVERWRITTEN)) {
1362 state->out_create_action = FILE_WAS_SUPERSEDED;
1363 } else {
1364 state->out_create_action = info;
1365 }
1366 result->op->create_action = state->out_create_action;
1367 state->out_file_attributes = dos_mode(result->conn,
1368 result->fsp_name);
1369
1370 state->out_creation_ts = get_create_timespec(smb1req->conn,
1371 result, result->fsp_name);
1372 state->out_last_access_ts = result->fsp_name->st.st_ex_atime;
1373 state->out_last_write_ts = result->fsp_name->st.st_ex_mtime;
1374 state->out_change_ts = get_change_timespec(smb1req->conn,
1375 result, result->fsp_name);
1376
1377 if (lp_dos_filetime_resolution(SNUM(smb2req->tcon->compat))) {
1378 dos_filetime_timespec(&state->out_creation_ts);
1379 dos_filetime_timespec(&state->out_last_access_ts);
1380 dos_filetime_timespec(&state->out_last_write_ts);
1381 dos_filetime_timespec(&state->out_change_ts);
1382 }
1383
1384 state->out_allocation_size =
1385 SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
1386 &(result->fsp_name->st));
1387 state->out_end_of_file = result->fsp_name->st.st_ex_size;
1388 if (state->out_file_attributes == 0) {
1389 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
1390 }
1391 state->out_file_id_persistent = result->op->global->open_persistent_id;
1392 state->out_file_id_volatile = result->op->global->open_volatile_id;
1393
1394 DEBUG(10,("smbd_smb2_create_send: %s - %s\n",
1395 fsp_str_dbg(result), fsp_fnum_dbg(result)));
1396
1397 tevent_req_done(req);
1398 return tevent_req_post(req, ev);
1399 }
1400
1401 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
1402 TALLOC_CTX *mem_ctx,
1403 uint8_t *out_oplock_level,
1404 uint32_t *out_create_action,
1405 struct timespec *out_creation_ts,
1406 struct timespec *out_last_access_ts,
1407 struct timespec *out_last_write_ts,
1408 struct timespec *out_change_ts,
1409 uint64_t *out_allocation_size,
1410 uint64_t *out_end_of_file,
1411 uint32_t *out_file_attributes,
1412 uint64_t *out_file_id_persistent,
1413 uint64_t *out_file_id_volatile,
1414 struct smb2_create_blobs *out_context_blobs)
1415 {
1416 NTSTATUS status;
1417 struct smbd_smb2_create_state *state = tevent_req_data(req,
1418 struct smbd_smb2_create_state);
1419
1420 if (tevent_req_is_nterror(req, &status)) {
1421 tevent_req_received(req);
1422 return status;
1423 }
1424
1425 *out_oplock_level = state->out_oplock_level;
1426 *out_create_action = state->out_create_action;
1427 *out_creation_ts = state->out_creation_ts;
1428 *out_last_access_ts = state->out_last_access_ts;
1429 *out_last_write_ts = state->out_last_write_ts;
1430 *out_change_ts = state->out_change_ts;
1431 *out_allocation_size = state->out_allocation_size;
1432 *out_end_of_file = state->out_end_of_file;
1433 *out_file_attributes = state->out_file_attributes;
1434 *out_file_id_persistent = state->out_file_id_persistent;
1435 *out_file_id_volatile = state->out_file_id_volatile;
1436 *out_context_blobs = *(state->out_context_blobs);
1437
1438 talloc_steal(mem_ctx, state->out_context_blobs->blobs);
1439
1440 tevent_req_received(req);
1441 return NT_STATUS_OK;
1442 }
1443
1444 /*********************************************************
1445 Code for dealing with deferred opens.
1446 *********************************************************/
1447
1448 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1449 struct timeval *p_request_time,
1450 struct deferred_open_record **open_rec)
1451 {
1452 struct smbd_smb2_create_state *state = NULL;
1453 struct tevent_req *req = NULL;
1454
1455 if (!smb2req) {
1456 return false;
1457 }
1458 req = smb2req->subreq;
1459 if (!req) {
1460 return false;
1461 }
1462 state = tevent_req_data(req, struct smbd_smb2_create_state);
1463 if (!state) {
1464 return false;
1465 }
1466 if (!state->open_was_deferred) {
1467 return false;
1468 }
1469 if (p_request_time) {
1470 *p_request_time = state->request_time;
1471 }
1472 if (open_rec != NULL) {
1473 *open_rec = state->open_rec;
1474 }
1475 return true;
1476 }
1477
1478 /*********************************************************
1479 Re-process this call early - requested by message or
1480 close.
1481 *********************************************************/
1482
1483 static struct smbd_smb2_request *find_open_smb2req(
1484 struct smbXsrv_connection *xconn, uint64_t mid)
1485 {
1486 struct smbd_smb2_request *smb2req;
1487
1488 for (smb2req = xconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1489 uint64_t message_id;
1490 if (smb2req->subreq == NULL) {
1491 /* This message has been processed. */
1492 continue;
1493 }
1494 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1495 /* This message has been processed. */
1496 continue;
1497 }
1498 message_id = get_mid_from_smb2req(smb2req);
1499 if (message_id == mid) {
1500 return smb2req;
1501 }
1502 }
1503 return NULL;
1504 }
1505
1506 bool open_was_deferred_smb2(struct smbXsrv_connection *xconn, uint64_t mid)
1507 {
1508 struct smbd_smb2_create_state *state = NULL;
1509 struct smbd_smb2_request *smb2req;
1510
1511 smb2req = find_open_smb2req(xconn, mid);
1512
1513 if (!smb2req) {
1514 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1515 (unsigned long long)mid));
1516 return false;
1517 }
1518 if (!smb2req->subreq) {
1519 return false;
1520 }
1521 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1522 return false;
1523 }
1524 state = tevent_req_data(smb2req->subreq,
1525 struct smbd_smb2_create_state);
1526 if (!state) {
1527 return false;
1528 }
1529 /* It's not in progress if there's no timeout event. */
1530 if (!state->open_was_deferred) {
1531 return false;
1532 }
1533
1534 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1535 (unsigned long long)mid));
1536
1537 return true;
1538 }
1539
1540 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1541 uint64_t mid)
1542 {
1543 struct smbd_smb2_create_state *state = NULL;
1544
1545 if (!smb2req->subreq) {
1546 return;
1547 }
1548 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1549 return;
1550 }
1551 state = tevent_req_data(smb2req->subreq,
1552 struct smbd_smb2_create_state);
1553 if (!state) {
1554 return;
1555 }
1556
1557 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1558 "mid %llu\n",
1559 (unsigned long long)mid ));
1560
1561 state->open_was_deferred = false;
1562 /* Ensure we don't have any outstanding timer event. */
1563 TALLOC_FREE(state->te);
1564 /* Ensure we don't have any outstanding immediate event. */
1565 TALLOC_FREE(state->im);
1566 }
1567
1568 void remove_deferred_open_message_smb2(
1569 struct smbXsrv_connection *xconn, uint64_t mid)
1570 {
1571 struct smbd_smb2_request *smb2req;
1572
1573 smb2req = find_open_smb2req(xconn, mid);
1574
1575 if (!smb2req) {
1576 DEBUG(10,("remove_deferred_open_message_smb2: "
1577 "can't find mid %llu\n",
1578 (unsigned long long)mid ));
1579 return;
1580 }
1581 remove_deferred_open_message_smb2_internal(smb2req, mid);
1582 }
1583
1584 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1585 struct tevent_immediate *im,
1586 void *private_data)
1587 {
1588 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1589 struct smbd_smb2_request);
1590 uint64_t mid = get_mid_from_smb2req(smb2req);
1591 NTSTATUS status;
1592
1593 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1594 "re-dispatching mid %llu\n",
1595 (unsigned long long)mid ));
1596
1597 status = smbd_smb2_request_dispatch(smb2req);
1598 if (!NT_STATUS_IS_OK(status)) {
1599 smbd_server_connection_terminate(smb2req->xconn,
1600 nt_errstr(status));
1601 return;
1602 }
1603 }
1604
1605 bool schedule_deferred_open_message_smb2(
1606 struct smbXsrv_connection *xconn, uint64_t mid)
1607 {
1608 struct smbd_smb2_create_state *state = NULL;
1609 struct smbd_smb2_request *smb2req;
1610
1611 smb2req = find_open_smb2req(xconn, mid);
1612
1613 if (!smb2req) {
1614 DEBUG(10,("schedule_deferred_open_message_smb2: "
1615 "can't find mid %llu\n",
1616 (unsigned long long)mid ));
1617 return false;
1618 }
1619 if (!smb2req->subreq) {
1620 return false;
1621 }
1622 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1623 return false;
1624 }
1625 state = tevent_req_data(smb2req->subreq,
1626 struct smbd_smb2_create_state);
1627 if (!state) {
1628 return false;
1629 }
1630
1631 /* Ensure we don't have any outstanding timer event. */
1632 TALLOC_FREE(state->te);
1633 /* Ensure we don't have any outstanding immediate event. */
1634 TALLOC_FREE(state->im);
1635
1636 /*
1637 * This is subtle. We must null out the callback
1638 * before rescheduling, else the first call to
1639 * tevent_req_nterror() causes the _receive()
1640 * function to be called, this causing tevent_req_post()
1641 * to crash.
1642 */
1643 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1644
1645 state->im = tevent_create_immediate(smb2req);
1646 if (!state->im) {
1647 smbd_server_connection_terminate(smb2req->xconn,
1648 nt_errstr(NT_STATUS_NO_MEMORY));
1649 return false;
1650 }
1651
1652 DEBUG(10,("schedule_deferred_open_message_smb2: "
1653 "re-processing mid %llu\n",
1654 (unsigned long long)mid ));
1655
1656 tevent_schedule_immediate(state->im,
1657 smb2req->sconn->ev_ctx,
1658 smbd_smb2_create_request_dispatch_immediate,
1659 smb2req);
1660
1661 return true;
1662 }
1663
1664 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1665 {
1666 struct smbd_smb2_request *smb2req = NULL;
1667 struct smbd_smb2_create_state *state = tevent_req_data(req,
1668 struct smbd_smb2_create_state);
1669 uint64_t mid;
1670
1671 if (!state) {
1672 return false;
1673 }
1674
1675 if (!state->smb2req) {
1676 return false;
1677 }
1678
1679 smb2req = state->smb2req;
1680 mid = get_mid_from_smb2req(smb2req);
1681
1682 if (is_deferred_open_async(state->open_rec)) {
1683 /* Can't cancel an async create. */
1684 return false;
1685 }
1686
1687 remove_deferred_open_message_smb2_internal(smb2req, mid);
1688
1689 tevent_req_defer_callback(req, smb2req->sconn->ev_ctx);
1690 tevent_req_nterror(req, NT_STATUS_CANCELLED);
1691 return true;
1692 }
1693
1694 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1695 struct timeval request_time,
1696 struct timeval timeout,
1697 struct file_id id,
1698 struct deferred_open_record *open_rec)
1699 {
1700 struct tevent_req *req = NULL;
1701 struct smbd_smb2_create_state *state = NULL;
1702 struct timeval end_time;
1703
1704 if (!smb2req) {
1705 return false;
1706 }
1707 req = smb2req->subreq;
1708 if (!req) {
1709 return false;
1710 }
1711 state = tevent_req_data(req, struct smbd_smb2_create_state);
1712 if (!state) {
1713 return false;
1714 }
1715 state->id = id;
1716 state->request_time = request_time;
1717 state->open_rec = talloc_move(state, &open_rec);
1718
1719 /* Re-schedule us to retry on timer expiry. */
1720 end_time = timeval_sum(&request_time, &timeout);
1721
1722 DEBUG(10,("push_deferred_open_message_smb2: "
1723 "timeout at %s\n",
1724 timeval_string(talloc_tos(),
1725 &end_time,
1726 true) ));
1727
1728 state->open_was_deferred = true;
1729
1730 /* allow this request to be canceled */
1731 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1732
1733 return true;
1734 }
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