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CVE-2015-5370: s4:rpc_server: give the correct reject reasons for invalid auth_level...
[Samba.git] / source3 / smbd / smb2_create.c
blob76d6d6915ffface4870daffa60b3136f5ab58a14
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 NTSTATUS status;
383
384 if (lease_ptr == NULL) {
385 if (fsp->oplock_type != LEASE_OPLOCK) {
386 return NT_STATUS_OK;
387 }
388 DEBUG(10, ("Reopened file has lease, but no lease "
389 "requested\n"));
390 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
391 }
392
393 if (fsp->oplock_type != LEASE_OPLOCK) {
394 DEBUG(10, ("Lease requested, but reopened file has no "
395 "lease\n"));
396 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
397 }
398
399 if (!smb2_lease_key_equal(&lease_ptr->lease_key,
400 &fsp->lease->lease.lease_key)) {
401 DEBUG(10, ("Different lease key requested than found "
402 "in reopened file\n"));
403 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
404 }
405
406 status = filename_convert(talloc_tos(), fsp->conn, false,
407 requested_filename, UCF_PREP_CREATEFILE,
408 NULL, &smb_fname);
409 if (!NT_STATUS_IS_OK(status)) {
410 DEBUG(10, ("filename_convert returned %s\n",
411 nt_errstr(status)));
412 return status;
413 }
414
415 if (!strequal(fsp->fsp_name->base_name, smb_fname->base_name)) {
416 DEBUG(10, ("Lease requested for file %s, reopened file "
417 "is named %s\n", smb_fname->base_name,
418 fsp->fsp_name->base_name));
419 TALLOC_FREE(smb_fname);
420 return NT_STATUS_INVALID_PARAMETER;
421 }
422
423 TALLOC_FREE(smb_fname);
424
425 return NT_STATUS_OK;
426 }
427
428 struct smbd_smb2_create_state {
429 struct smbd_smb2_request *smb2req;
430 struct smb_request *smb1req;
431 bool open_was_deferred;
432 struct tevent_timer *te;
433 struct tevent_immediate *im;
434 struct timeval request_time;
435 struct file_id id;
436 struct deferred_open_record *open_rec;
437 uint8_t out_oplock_level;
438 uint32_t out_create_action;
439 struct timespec out_creation_ts;
440 struct timespec out_last_access_ts;
441 struct timespec out_last_write_ts;
442 struct timespec out_change_ts;
443 uint64_t out_allocation_size;
444 uint64_t out_end_of_file;
445 uint32_t out_file_attributes;
446 uint64_t out_file_id_persistent;
447 uint64_t out_file_id_volatile;
448 struct smb2_create_blobs *out_context_blobs;
449 };
450
451 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
452 struct tevent_context *ev,
453 struct smbd_smb2_request *smb2req,
454 uint8_t in_oplock_level,
455 uint32_t in_impersonation_level,
456 uint32_t in_desired_access,
457 uint32_t in_file_attributes,
458 uint32_t in_share_access,
459 uint32_t in_create_disposition,
460 uint32_t in_create_options,
461 const char *in_name,
462 struct smb2_create_blobs in_context_blobs)
463 {
464 struct tevent_req *req = NULL;
465 struct smbd_smb2_create_state *state = NULL;
466 NTSTATUS status;
467 struct smb_request *smb1req = NULL;
468 files_struct *result = NULL;
469 int info;
470 int requested_oplock_level;
471 struct smb2_create_blob *dhnc = NULL;
472 struct smb2_create_blob *dh2c = NULL;
473 struct smb2_create_blob *dhnq = NULL;
474 struct smb2_create_blob *dh2q = NULL;
475 struct smb2_create_blob *rqls = NULL;
476 struct smbXsrv_open *op = NULL;
477
478 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
479 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
480 } else {
481 requested_oplock_level = in_oplock_level;
482 }
483
484
485 if (smb2req->subreq == NULL) {
486 /* New create call. */
487 req = tevent_req_create(mem_ctx, &state,
488 struct smbd_smb2_create_state);
489 if (req == NULL) {
490 return NULL;
491 }
492 state->smb2req = smb2req;
493
494 smb1req = smbd_smb2_fake_smb_request(smb2req);
495 if (tevent_req_nomem(smb1req, req)) {
496 return tevent_req_post(req, ev);
497 }
498 state->smb1req = smb1req;
499 smb2req->subreq = req;
500 DEBUG(10,("smbd_smb2_create: name[%s]\n",
501 in_name));
502 } else {
503 /* Re-entrant create call. */
504 req = smb2req->subreq;
505 state = tevent_req_data(req,
506 struct smbd_smb2_create_state);
507 smb1req = state->smb1req;
508 TALLOC_FREE(state->out_context_blobs);
509 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
510 in_name ));
511 }
512
513 state->out_context_blobs = talloc_zero(state, struct smb2_create_blobs);
514 if (tevent_req_nomem(state->out_context_blobs, req)) {
515 return tevent_req_post(req, ev);
516 }
517
518 dhnq = smb2_create_blob_find(&in_context_blobs,
519 SMB2_CREATE_TAG_DHNQ);
520 dhnc = smb2_create_blob_find(&in_context_blobs,
521 SMB2_CREATE_TAG_DHNC);
522 dh2q = smb2_create_blob_find(&in_context_blobs,
523 SMB2_CREATE_TAG_DH2Q);
524 dh2c = smb2_create_blob_find(&in_context_blobs,
525 SMB2_CREATE_TAG_DH2C);
526 if (smb2req->xconn->smb2.server.capabilities & SMB2_CAP_LEASING) {
527 rqls = smb2_create_blob_find(&in_context_blobs,
528 SMB2_CREATE_TAG_RQLS);
529 }
530
531 if ((dhnc && dh2c) || (dhnc && dh2q) || (dh2c && dhnq) ||
532 (dh2q && dh2c))
533 {
534 /* not both are allowed at the same time */
535 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
536 return tevent_req_post(req, ev);
537 }
538
539 if (dhnc) {
540 uint32_t num_blobs_allowed;
541
542 if (dhnc->data.length != 16) {
543 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
544 return tevent_req_post(req, ev);
545 }
546
547 /*
548 * According to MS-SMB2: 3.3.5.9.7, "Handling the
549 * SMB2_CREATE_DURABLE_HANDLE_RECONNECT Create Context",
550 * we should ignore an additional dhnq blob, but fail
551 * the request (with status OBJECT_NAME_NOT_FOUND) if
552 * any other extra create blob has been provided.
553 *
554 * (Note that the cases of an additional dh2q or dh2c blob
555 * which require a different error code, have been treated
556 * above.)
557 *
558 * TODO:
559 * This is only true for the oplock case:
560 * For leases, lease request is required additionally.
561 */
562
563 if (dhnq) {
564 num_blobs_allowed = 2;
565 } else {
566 num_blobs_allowed = 1;
567 }
568
569 if (rqls != NULL) {
570 num_blobs_allowed += 1;
571 }
572
573 if (in_context_blobs.num_blobs != num_blobs_allowed) {
574 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
575 return tevent_req_post(req, ev);
576 }
577 }
578
579 if (dh2c) {
580 uint32_t num_blobs_allowed;
581
582 if (dh2c->data.length != 36) {
583 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
584 return tevent_req_post(req, ev);
585 }
586
587 /*
588 * According to MS-SMB2: 3.3.5.9.12, "Handling the
589 * SMB2_CREATE_DURABLE_HANDLE_RECONNECT_V2 Create Context",
590 * we should fail the request with status
591 * OBJECT_NAME_NOT_FOUND if any other create blob has been
592 * provided.
593 *
594 * (Note that the cases of an additional dhnq, dhnc or dh2q
595 * blob which require a different error code, have been
596 * treated above.)
597 *
598 * TODO:
599 * This is only true for the oplock case:
600 * For leases, lease request is required additionally!
601 */
602
603 num_blobs_allowed = 1;
604
605 if (rqls != NULL) {
606 num_blobs_allowed += 1;
607 }
608
609 if (in_context_blobs.num_blobs != num_blobs_allowed) {
610 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
611 return tevent_req_post(req, ev);
612 }
613 }
614
615 if (IS_IPC(smb1req->conn)) {
616 const char *pipe_name = in_name;
617
618 if (dhnc || dh2c) {
619 /* durable handles are not supported on IPC$ */
620 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
621 return tevent_req_post(req, ev);
622 }
623
624 if (!lp_nt_pipe_support()) {
625 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
626 return tevent_req_post(req, ev);
627 }
628
629 status = open_np_file(smb1req, pipe_name, &result);
630 if (!NT_STATUS_IS_OK(status)) {
631 tevent_req_nterror(req, status);
632 return tevent_req_post(req, ev);
633 }
634 info = FILE_WAS_OPENED;
635 } else if (CAN_PRINT(smb1req->conn)) {
636 if (dhnc || dh2c) {
637 /* durable handles are not supported on printers */
638 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
639 return tevent_req_post(req, ev);
640 }
641
642 status = file_new(smb1req, smb1req->conn, &result);
643 if(!NT_STATUS_IS_OK(status)) {
644 tevent_req_nterror(req, status);
645 return tevent_req_post(req, ev);
646 }
647
648 status = print_spool_open(result, in_name,
649 smb1req->vuid);
650 if (!NT_STATUS_IS_OK(status)) {
651 file_free(smb1req, result);
652 tevent_req_nterror(req, status);
653 return tevent_req_post(req, ev);
654 }
655 info = FILE_WAS_CREATED;
656 } else {
657 char *fname;
658 struct smb2_create_blob *exta = NULL;
659 struct ea_list *ea_list = NULL;
660 struct smb2_create_blob *mxac = NULL;
661 NTTIME max_access_time = 0;
662 struct smb2_create_blob *secd = NULL;
663 struct security_descriptor *sec_desc = NULL;
664 struct smb2_create_blob *alsi = NULL;
665 uint64_t allocation_size = 0;
666 struct smb2_create_blob *twrp = NULL;
667 struct smb2_create_blob *qfid = NULL;
668 struct GUID _create_guid = GUID_zero();
669 struct GUID *create_guid = NULL;
670 bool update_open = false;
671 bool durable_requested = false;
672 uint32_t durable_timeout_msec = 0;
673 bool do_durable_reconnect = false;
674 uint64_t persistent_id = 0;
675 struct smb2_lease lease;
676 struct smb2_lease *lease_ptr = NULL;
677 ssize_t lease_len = -1;
678 struct smb2_create_blob *svhdx = NULL;
679
680 exta = smb2_create_blob_find(&in_context_blobs,
681 SMB2_CREATE_TAG_EXTA);
682 mxac = smb2_create_blob_find(&in_context_blobs,
683 SMB2_CREATE_TAG_MXAC);
684 secd = smb2_create_blob_find(&in_context_blobs,
685 SMB2_CREATE_TAG_SECD);
686 alsi = smb2_create_blob_find(&in_context_blobs,
687 SMB2_CREATE_TAG_ALSI);
688 twrp = smb2_create_blob_find(&in_context_blobs,
689 SMB2_CREATE_TAG_TWRP);
690 qfid = smb2_create_blob_find(&in_context_blobs,
691 SMB2_CREATE_TAG_QFID);
692 if (smb2req->xconn->protocol >= PROTOCOL_SMB3_02) {
693 /*
694 * This was introduced with SMB3_02
695 */
696 svhdx = smb2_create_blob_find(&in_context_blobs,
697 SVHDX_OPEN_DEVICE_CONTEXT);
698 }
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 if (ea_list_has_invalid_name(ea_list)) {
721 tevent_req_nterror(req, STATUS_INVALID_EA_NAME);
722 return tevent_req_post(req, ev);
723 }
724 }
725
726 if (mxac) {
727 if (mxac->data.length == 0) {
728 max_access_time = 0;
729 } else if (mxac->data.length == 8) {
730 max_access_time = BVAL(mxac->data.data, 0);
731 } else {
732 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
733 return tevent_req_post(req, ev);
734 }
735 }
736
737 if (secd) {
738 enum ndr_err_code ndr_err;
739
740 sec_desc = talloc_zero(state, struct security_descriptor);
741 if (tevent_req_nomem(sec_desc, req)) {
742 return tevent_req_post(req, ev);
743 }
744
745 ndr_err = ndr_pull_struct_blob(&secd->data,
746 sec_desc, sec_desc,
747 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
748 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
749 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
750 ndr_errstr(ndr_err)));
751 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
752 return tevent_req_post(req, ev);
753 }
754 }
755
756 if (dhnq) {
757 if (dhnq->data.length != 16) {
758 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
759 return tevent_req_post(req, ev);
760 }
761
762 if (dh2q) {
763 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
764 return tevent_req_post(req, ev);
765 }
766
767 /*
768 * durable handle request is processed below.
769 */
770 durable_requested = true;
771 /*
772 * Set the timeout to 16 mins.
773 *
774 * TODO: test this against Windows 2012
775 * as the default for durable v2 is 1 min.
776 */
777 durable_timeout_msec = (16*60*1000);
778 }
779
780 if (dh2q) {
781 const uint8_t *p = dh2q->data.data;
782 uint32_t durable_v2_timeout = 0;
783 DATA_BLOB create_guid_blob;
784
785 if (dh2q->data.length != 32) {
786 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
787 return tevent_req_post(req, ev);
788 }
789
790 if (dhnq) {
791 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
792 return tevent_req_post(req, ev);
793 }
794
795 durable_v2_timeout = IVAL(p, 0);
796 create_guid_blob = data_blob_const(p + 16, 16);
797
798 status = GUID_from_ndr_blob(&create_guid_blob,
799 &_create_guid);
800 if (tevent_req_nterror(req, status)) {
801 return tevent_req_post(req, ev);
802 }
803 create_guid = &_create_guid;
804 /*
805 * we need to store the create_guid later
806 */
807 update_open = true;
808
809 /*
810 * durable handle v2 request processed below
811 */
812 durable_requested = true;
813 durable_timeout_msec = durable_v2_timeout;
814 if (durable_timeout_msec == 0) {
815 /*
816 * Set the timeout to 1 min as default.
817 *
818 * This matches Windows 2012.
819 */
820 durable_timeout_msec = (60*1000);
821 }
822 }
823
824 if (dhnc) {
825 persistent_id = BVAL(dhnc->data.data, 0);
826
827 do_durable_reconnect = true;
828 }
829
830 if (dh2c) {
831 const uint8_t *p = dh2c->data.data;
832 DATA_BLOB create_guid_blob;
833
834 persistent_id = BVAL(p, 0);
835 create_guid_blob = data_blob_const(p + 16, 16);
836
837 status = GUID_from_ndr_blob(&create_guid_blob,
838 &_create_guid);
839 if (tevent_req_nterror(req, status)) {
840 return tevent_req_post(req, ev);
841 }
842 create_guid = &_create_guid;
843
844 do_durable_reconnect = true;
845 }
846
847 if (alsi) {
848 if (alsi->data.length != 8) {
849 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
850 return tevent_req_post(req, ev);
851 }
852 allocation_size = BVAL(alsi->data.data, 0);
853 }
854
855 if (twrp) {
856 NTTIME nttime;
857 time_t t;
858 struct tm *tm;
859
860 if (twrp->data.length != 8) {
861 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
862 return tevent_req_post(req, ev);
863 }
864
865 nttime = BVAL(twrp->data.data, 0);
866 t = nt_time_to_unix(nttime);
867 tm = gmtime(&t);
868
869 TALLOC_FREE(fname);
870 fname = talloc_asprintf(state,
871 "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
872 tm->tm_year + 1900,
873 tm->tm_mon + 1,
874 tm->tm_mday,
875 tm->tm_hour,
876 tm->tm_min,
877 tm->tm_sec,
878 in_name);
879 if (tevent_req_nomem(fname, req)) {
880 return tevent_req_post(req, ev);
881 }
882 }
883
884 if (qfid) {
885 if (qfid->data.length != 0) {
886 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
887 return tevent_req_post(req, ev);
888 }
889 }
890
891 if (rqls) {
892 lease_len = smb2_lease_pull(
893 rqls->data.data, rqls->data.length, &lease);
894 if (lease_len == -1) {
895 tevent_req_nterror(
896 req, NT_STATUS_INVALID_PARAMETER);
897 return tevent_req_post(req, ev);
898 }
899 lease_ptr = &lease;
900
901 if (DEBUGLEVEL >= 10) {
902 DEBUG(10, ("Got lease request size %d\n",
903 (int)lease_len));
904 NDR_PRINT_DEBUG(smb2_lease, lease_ptr);
905 }
906
907 if (!smb2_lease_key_valid(&lease.lease_key)) {
908 lease_ptr = NULL;
909 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
910 }
911
912 if ((smb2req->xconn->protocol < PROTOCOL_SMB3_00) &&
913 (lease.lease_version != 1)) {
914 DEBUG(10, ("v2 lease key only for SMB3\n"));
915 lease_ptr = NULL;
916 }
917 }
918
919 if (svhdx != NULL) {
920 /* SharedVHD is not yet supported */
921 tevent_req_nterror(
922 req, NT_STATUS_INVALID_DEVICE_REQUEST);
923 return tevent_req_post(req, ev);
924 }
925
926 /* these are ignored for SMB2 */
927 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
928 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
929
930 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
931
932 DEBUG(10, ("smbd_smb2_create_send: open execution phase\n"));
933
934 /*
935 * For the backend file open procedure, there are
936 * two possible modes: durable_reconnect or not.
937 */
938 if (do_durable_reconnect) {
939 DATA_BLOB new_cookie = data_blob_null;
940 NTTIME now = timeval_to_nttime(&smb2req->request_time);
941
942 status = smb2srv_open_recreate(smb2req->xconn,
943 smb1req->conn->session_info,
944 persistent_id, create_guid,
945 now, &op);
946 if (!NT_STATUS_IS_OK(status)) {
947 DEBUG(3, ("smbd_smb2_create_send: "
948 "smb2srv_open_recreate failed: %s\n",
949 nt_errstr(status)));
950 tevent_req_nterror(req, status);
951 return tevent_req_post(req, ev);
952 }
953
954 DEBUG(10, ("smb2_create_send: %s to recreate the "
955 "smb2srv_open struct for a durable handle.\n",
956 op->global->durable ? "succeded" : "failed"));
957
958 if (!op->global->durable) {
959 talloc_free(op);
960 tevent_req_nterror(req,
961 NT_STATUS_OBJECT_NAME_NOT_FOUND);
962 return tevent_req_post(req, ev);
963 }
964
965 status = SMB_VFS_DURABLE_RECONNECT(smb1req->conn,
966 smb1req,
967 op, /* smbXsrv_open input */
968 op->global->backend_cookie,
969 op, /* TALLOC_CTX */
970 &result, &new_cookie);
971 if (!NT_STATUS_IS_OK(status)) {
972 NTSTATUS return_status;
973
974 return_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
975
976 DEBUG(3, ("smbd_smb2_create_send: "
977 "durable_reconnect failed: %s => %s\n",
978 nt_errstr(status),
979 nt_errstr(return_status)));
980
981 tevent_req_nterror(req, return_status);
982 return tevent_req_post(req, ev);
983 }
984
985 DEBUG(10, ("result->oplock_type=%u, lease_ptr==%p\n",
986 (unsigned)result->oplock_type, lease_ptr));
987
988 status = smbd_smb2_create_durable_lease_check(
989 fname, result, lease_ptr);
990 if (!NT_STATUS_IS_OK(status)) {
991 close_file(smb1req, result, SHUTDOWN_CLOSE);
992 tevent_req_nterror(req, status);
993 return tevent_req_post(req, ev);
994 }
995
996 data_blob_free(&op->global->backend_cookie);
997 op->global->backend_cookie = new_cookie;
998
999 op->status = NT_STATUS_OK;
1000 op->global->disconnect_time = 0;
1001
1002 /* save the timout for later update */
1003 durable_timeout_msec = op->global->durable_timeout_msec;
1004
1005 update_open = true;
1006
1007 info = FILE_WAS_OPENED;
1008 } else {
1009 struct smb_filename *smb_fname = NULL;
1010
1011 if (requested_oplock_level == SMB2_OPLOCK_LEVEL_LEASE) {
1012 if (lease_ptr == NULL) {
1013 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
1014 }
1015 } else {
1016 lease_ptr = NULL;
1017 }
1018
1019 /*
1020 * For a DFS path the function parse_dfs_path()
1021 * will do the path processing.
1022 */
1023
1024 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
1025 /* convert '\\' into '/' */
1026 status = check_path_syntax(fname);
1027 if (!NT_STATUS_IS_OK(status)) {
1028 tevent_req_nterror(req, status);
1029 return tevent_req_post(req, ev);
1030 }
1031 }
1032
1033 status = filename_convert(req,
1034 smb1req->conn,
1035 smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
1036 fname,
1037 UCF_PREP_CREATEFILE,
1038 NULL, /* ppath_contains_wcards */
1039 &smb_fname);
1040 if (!NT_STATUS_IS_OK(status)) {
1041 tevent_req_nterror(req, status);
1042 return tevent_req_post(req, ev);
1043 }
1044
1045 /*
1046 * MS-SMB2: 2.2.13 SMB2 CREATE Request
1047 * ImpersonationLevel ... MUST contain one of the
1048 * following values. The server MUST validate this
1049 * field, but otherwise ignore it.
1050 *
1051 * NB. The source4/torture/smb2/durable_open.c test
1052 * shows this check is only done on real opens, not
1053 * on durable handle-reopens.
1054 */
1055
1056 if (in_impersonation_level >
1057 SMB2_IMPERSONATION_DELEGATE) {
1058 tevent_req_nterror(req,
1059 NT_STATUS_BAD_IMPERSONATION_LEVEL);
1060 return tevent_req_post(req, ev);
1061 }
1062
1063 /*
1064 * We know we're going to do a local open, so now
1065 * we must be protocol strict. JRA.
1066 *
1067 * MS-SMB2: 3.3.5.9 - Receiving an SMB2 CREATE Request
1068 * If the file name length is greater than zero and the
1069 * first character is a path separator character, the
1070 * server MUST fail the request with
1071 * STATUS_INVALID_PARAMETER.
1072 */
1073 if (in_name[0] == '\\' || in_name[0] == '/') {
1074 tevent_req_nterror(req,
1075 NT_STATUS_INVALID_PARAMETER);
1076 return tevent_req_post(req, ev);
1077 }
1078
1079 status = SMB_VFS_CREATE_FILE(smb1req->conn,
1080 smb1req,
1081 0, /* root_dir_fid */
1082 smb_fname,
1083 in_desired_access,
1084 in_share_access,
1085 in_create_disposition,
1086 in_create_options,
1087 in_file_attributes,
1088 map_smb2_oplock_levels_to_samba(requested_oplock_level),
1089 lease_ptr,
1090 allocation_size,
1091 0, /* private_flags */
1092 sec_desc,
1093 ea_list,
1094 &result,
1095 &info,
1096 &in_context_blobs,
1097 state->out_context_blobs);
1098 if (!NT_STATUS_IS_OK(status)) {
1099 if (open_was_deferred(smb1req->xconn, smb1req->mid)) {
1100 SMBPROFILE_IOBYTES_ASYNC_SET_IDLE(smb2req->profile);
1101 return req;
1102 }
1103 tevent_req_nterror(req, status);
1104 return tevent_req_post(req, ev);
1105 }
1106 op = result->op;
1107 }
1108
1109 /*
1110 * here we have op == result->op
1111 */
1112
1113 DEBUG(10, ("smbd_smb2_create_send: "
1114 "response construction phase\n"));
1115
1116 if (mxac) {
1117 NTTIME last_write_time;
1118
1119 last_write_time = unix_timespec_to_nt_time(
1120 result->fsp_name->st.st_ex_mtime);
1121 if (last_write_time != max_access_time) {
1122 uint8_t p[8];
1123 uint32_t max_access_granted;
1124 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1125
1126 status = smbd_calculate_access_mask(smb1req->conn,
1127 result->fsp_name,
1128 false,
1129 SEC_FLAG_MAXIMUM_ALLOWED,
1130 &max_access_granted);
1131
1132 SIVAL(p, 0, NT_STATUS_V(status));
1133 SIVAL(p, 4, max_access_granted);
1134
1135 status = smb2_create_blob_add(
1136 state->out_context_blobs,
1137 state->out_context_blobs,
1138 SMB2_CREATE_TAG_MXAC,
1139 blob);
1140 if (!NT_STATUS_IS_OK(status)) {
1141 tevent_req_nterror(req, status);
1142 return tevent_req_post(req, ev);
1143 }
1144 }
1145 }
1146
1147 if (durable_requested &&
1148 (fsp_lease_type(result) & SMB2_LEASE_HANDLE))
1149 {
1150 status = SMB_VFS_DURABLE_COOKIE(result,
1151 op,
1152 &op->global->backend_cookie);
1153 if (!NT_STATUS_IS_OK(status)) {
1154 op->global->backend_cookie = data_blob_null;
1155 }
1156 }
1157 if (op->global->backend_cookie.length > 0) {
1158 update_open = true;
1159
1160 op->global->durable = true;
1161 op->global->durable_timeout_msec = durable_timeout_msec;
1162 }
1163
1164 if (update_open) {
1165 op->global->create_guid = _create_guid;
1166
1167 status = smbXsrv_open_update(op);
1168 DEBUG(10, ("smb2_create_send: smbXsrv_open_update "
1169 "returned %s\n",
1170 nt_errstr(status)));
1171 if (!NT_STATUS_IS_OK(status)) {
1172 tevent_req_nterror(req, status);
1173 return tevent_req_post(req, ev);
1174 }
1175 }
1176
1177 if (dhnq && op->global->durable) {
1178 uint8_t p[8] = { 0, };
1179 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1180
1181 status = smb2_create_blob_add(state->out_context_blobs,
1182 state->out_context_blobs,
1183 SMB2_CREATE_TAG_DHNQ,
1184 blob);
1185 if (!NT_STATUS_IS_OK(status)) {
1186 tevent_req_nterror(req, status);
1187 return tevent_req_post(req, ev);
1188 }
1189 }
1190
1191 if (dh2q && op->global->durable) {
1192 uint8_t p[8] = { 0, };
1193 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1194 uint32_t durable_v2_response_flags = 0;
1195
1196 SIVAL(p, 0, op->global->durable_timeout_msec);
1197 SIVAL(p, 4, durable_v2_response_flags);
1198
1199 status = smb2_create_blob_add(state->out_context_blobs,
1200 state->out_context_blobs,
1201 SMB2_CREATE_TAG_DH2Q,
1202 blob);
1203 if (!NT_STATUS_IS_OK(status)) {
1204 tevent_req_nterror(req, status);
1205 return tevent_req_post(req, ev);
1206 }
1207 }
1208
1209 if (qfid) {
1210 uint8_t p[32];
1211 uint64_t file_index = get_FileIndex(result->conn,
1212 &result->fsp_name->st);
1213 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1214
1215 ZERO_STRUCT(p);
1216
1217 /* From conversations with Microsoft engineers at
1218 the MS plugfest. The first 8 bytes are the "volume index"
1219 == inode, the second 8 bytes are the "volume id",
1220 == dev. This will be updated in the SMB2 doc. */
1221 SBVAL(p, 0, file_index);
1222 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
1223
1224 status = smb2_create_blob_add(state->out_context_blobs,
1225 state->out_context_blobs,
1226 SMB2_CREATE_TAG_QFID,
1227 blob);
1228 if (!NT_STATUS_IS_OK(status)) {
1229 tevent_req_nterror(req, status);
1230 return tevent_req_post(req, ev);
1231 }
1232 }
1233
1234 if ((rqls != NULL) && (result->oplock_type == LEASE_OPLOCK)) {
1235 uint8_t buf[52];
1236
1237 lease = result->lease->lease;
1238
1239 lease_len = sizeof(buf);
1240 if (lease.lease_version == 1) {
1241 lease_len = 32;
1242 }
1243
1244 if (!smb2_lease_push(&lease, buf, lease_len)) {
1245 tevent_req_nterror(
1246 req, NT_STATUS_INTERNAL_ERROR);
1247 return tevent_req_post(req, ev);
1248 }
1249
1250 status = smb2_create_blob_add(
1251 state, state->out_context_blobs,
1252 SMB2_CREATE_TAG_RQLS,
1253 data_blob_const(buf, lease_len));
1254 if (!NT_STATUS_IS_OK(status)) {
1255 tevent_req_nterror(req, status);
1256 return tevent_req_post(req, ev);
1257 }
1258 }
1259 }
1260
1261 smb2req->compat_chain_fsp = smb1req->chain_fsp;
1262
1263 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
1264 state->out_oplock_level = in_oplock_level;
1265 } else {
1266 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
1267 }
1268
1269 if ((in_create_disposition == FILE_SUPERSEDE)
1270 && (info == FILE_WAS_OVERWRITTEN)) {
1271 state->out_create_action = FILE_WAS_SUPERSEDED;
1272 } else {
1273 state->out_create_action = info;
1274 }
1275 state->out_file_attributes = dos_mode(result->conn,
1276 result->fsp_name);
1277
1278 state->out_creation_ts = get_create_timespec(smb1req->conn,
1279 result, result->fsp_name);
1280 state->out_last_access_ts = result->fsp_name->st.st_ex_atime;
1281 state->out_last_write_ts = result->fsp_name->st.st_ex_mtime;
1282 state->out_change_ts = get_change_timespec(smb1req->conn,
1283 result, result->fsp_name);
1284
1285 if (lp_dos_filetime_resolution(SNUM(smb2req->tcon->compat))) {
1286 dos_filetime_timespec(&state->out_creation_ts);
1287 dos_filetime_timespec(&state->out_last_access_ts);
1288 dos_filetime_timespec(&state->out_last_write_ts);
1289 dos_filetime_timespec(&state->out_change_ts);
1290 }
1291
1292 state->out_allocation_size =
1293 SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
1294 &(result->fsp_name->st));
1295 state->out_end_of_file = result->fsp_name->st.st_ex_size;
1296 if (state->out_file_attributes == 0) {
1297 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
1298 }
1299 state->out_file_id_persistent = result->op->global->open_persistent_id;
1300 state->out_file_id_volatile = result->op->global->open_volatile_id;
1301
1302 DEBUG(10,("smbd_smb2_create_send: %s - %s\n",
1303 fsp_str_dbg(result), fsp_fnum_dbg(result)));
1304
1305 tevent_req_done(req);
1306 return tevent_req_post(req, ev);
1307 }
1308
1309 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
1310 TALLOC_CTX *mem_ctx,
1311 uint8_t *out_oplock_level,
1312 uint32_t *out_create_action,
1313 struct timespec *out_creation_ts,
1314 struct timespec *out_last_access_ts,
1315 struct timespec *out_last_write_ts,
1316 struct timespec *out_change_ts,
1317 uint64_t *out_allocation_size,
1318 uint64_t *out_end_of_file,
1319 uint32_t *out_file_attributes,
1320 uint64_t *out_file_id_persistent,
1321 uint64_t *out_file_id_volatile,
1322 struct smb2_create_blobs *out_context_blobs)
1323 {
1324 NTSTATUS status;
1325 struct smbd_smb2_create_state *state = tevent_req_data(req,
1326 struct smbd_smb2_create_state);
1327
1328 if (tevent_req_is_nterror(req, &status)) {
1329 tevent_req_received(req);
1330 return status;
1331 }
1332
1333 *out_oplock_level = state->out_oplock_level;
1334 *out_create_action = state->out_create_action;
1335 *out_creation_ts = state->out_creation_ts;
1336 *out_last_access_ts = state->out_last_access_ts;
1337 *out_last_write_ts = state->out_last_write_ts;
1338 *out_change_ts = state->out_change_ts;
1339 *out_allocation_size = state->out_allocation_size;
1340 *out_end_of_file = state->out_end_of_file;
1341 *out_file_attributes = state->out_file_attributes;
1342 *out_file_id_persistent = state->out_file_id_persistent;
1343 *out_file_id_volatile = state->out_file_id_volatile;
1344 *out_context_blobs = *(state->out_context_blobs);
1345
1346 talloc_steal(mem_ctx, state->out_context_blobs->blobs);
1347
1348 tevent_req_received(req);
1349 return NT_STATUS_OK;
1350 }
1351
1352 /*********************************************************
1353 Code for dealing with deferred opens.
1354 *********************************************************/
1355
1356 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1357 struct timeval *p_request_time,
1358 struct deferred_open_record **open_rec)
1359 {
1360 struct smbd_smb2_create_state *state = NULL;
1361 struct tevent_req *req = NULL;
1362
1363 if (!smb2req) {
1364 return false;
1365 }
1366 req = smb2req->subreq;
1367 if (!req) {
1368 return false;
1369 }
1370 state = tevent_req_data(req, struct smbd_smb2_create_state);
1371 if (!state) {
1372 return false;
1373 }
1374 if (!state->open_was_deferred) {
1375 return false;
1376 }
1377 if (p_request_time) {
1378 *p_request_time = state->request_time;
1379 }
1380 if (open_rec != NULL) {
1381 *open_rec = state->open_rec;
1382 }
1383 return true;
1384 }
1385
1386 /*********************************************************
1387 Re-process this call early - requested by message or
1388 close.
1389 *********************************************************/
1390
1391 static struct smbd_smb2_request *find_open_smb2req(
1392 struct smbXsrv_connection *xconn, uint64_t mid)
1393 {
1394 struct smbd_smb2_request *smb2req;
1395
1396 for (smb2req = xconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1397 uint64_t message_id;
1398 if (smb2req->subreq == NULL) {
1399 /* This message has been processed. */
1400 continue;
1401 }
1402 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1403 /* This message has been processed. */
1404 continue;
1405 }
1406 message_id = get_mid_from_smb2req(smb2req);
1407 if (message_id == mid) {
1408 return smb2req;
1409 }
1410 }
1411 return NULL;
1412 }
1413
1414 bool open_was_deferred_smb2(struct smbXsrv_connection *xconn, uint64_t mid)
1415 {
1416 struct smbd_smb2_create_state *state = NULL;
1417 struct smbd_smb2_request *smb2req;
1418
1419 smb2req = find_open_smb2req(xconn, mid);
1420
1421 if (!smb2req) {
1422 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1423 (unsigned long long)mid));
1424 return false;
1425 }
1426 if (!smb2req->subreq) {
1427 return false;
1428 }
1429 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1430 return false;
1431 }
1432 state = tevent_req_data(smb2req->subreq,
1433 struct smbd_smb2_create_state);
1434 if (!state) {
1435 return false;
1436 }
1437 /* It's not in progress if there's no timeout event. */
1438 if (!state->open_was_deferred) {
1439 return false;
1440 }
1441
1442 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1443 (unsigned long long)mid));
1444
1445 return true;
1446 }
1447
1448 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1449 uint64_t mid)
1450 {
1451 struct smbd_smb2_create_state *state = NULL;
1452
1453 if (!smb2req->subreq) {
1454 return;
1455 }
1456 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1457 return;
1458 }
1459 state = tevent_req_data(smb2req->subreq,
1460 struct smbd_smb2_create_state);
1461 if (!state) {
1462 return;
1463 }
1464
1465 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1466 "mid %llu\n",
1467 (unsigned long long)mid ));
1468
1469 state->open_was_deferred = false;
1470 /* Ensure we don't have any outstanding timer event. */
1471 TALLOC_FREE(state->te);
1472 /* Ensure we don't have any outstanding immediate event. */
1473 TALLOC_FREE(state->im);
1474 }
1475
1476 void remove_deferred_open_message_smb2(
1477 struct smbXsrv_connection *xconn, uint64_t mid)
1478 {
1479 struct smbd_smb2_request *smb2req;
1480
1481 smb2req = find_open_smb2req(xconn, mid);
1482
1483 if (!smb2req) {
1484 DEBUG(10,("remove_deferred_open_message_smb2: "
1485 "can't find mid %llu\n",
1486 (unsigned long long)mid ));
1487 return;
1488 }
1489 remove_deferred_open_message_smb2_internal(smb2req, mid);
1490 }
1491
1492 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1493 struct tevent_immediate *im,
1494 void *private_data)
1495 {
1496 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1497 struct smbd_smb2_request);
1498 uint64_t mid = get_mid_from_smb2req(smb2req);
1499 NTSTATUS status;
1500
1501 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1502 "re-dispatching mid %llu\n",
1503 (unsigned long long)mid ));
1504
1505 status = smbd_smb2_request_dispatch(smb2req);
1506 if (!NT_STATUS_IS_OK(status)) {
1507 smbd_server_connection_terminate(smb2req->xconn,
1508 nt_errstr(status));
1509 return;
1510 }
1511 }
1512
1513 bool schedule_deferred_open_message_smb2(
1514 struct smbXsrv_connection *xconn, uint64_t mid)
1515 {
1516 struct smbd_smb2_create_state *state = NULL;
1517 struct smbd_smb2_request *smb2req;
1518
1519 smb2req = find_open_smb2req(xconn, mid);
1520
1521 if (!smb2req) {
1522 DEBUG(10,("schedule_deferred_open_message_smb2: "
1523 "can't find mid %llu\n",
1524 (unsigned long long)mid ));
1525 return false;
1526 }
1527 if (!smb2req->subreq) {
1528 return false;
1529 }
1530 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1531 return false;
1532 }
1533 state = tevent_req_data(smb2req->subreq,
1534 struct smbd_smb2_create_state);
1535 if (!state) {
1536 return false;
1537 }
1538
1539 /* Ensure we don't have any outstanding timer event. */
1540 TALLOC_FREE(state->te);
1541 /* Ensure we don't have any outstanding immediate event. */
1542 TALLOC_FREE(state->im);
1543
1544 /*
1545 * This is subtle. We must null out the callback
1546 * before rescheduling, else the first call to
1547 * tevent_req_nterror() causes the _receive()
1548 * function to be called, this causing tevent_req_post()
1549 * to crash.
1550 */
1551 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1552
1553 state->im = tevent_create_immediate(smb2req);
1554 if (!state->im) {
1555 smbd_server_connection_terminate(smb2req->xconn,
1556 nt_errstr(NT_STATUS_NO_MEMORY));
1557 return false;
1558 }
1559
1560 DEBUG(10,("schedule_deferred_open_message_smb2: "
1561 "re-processing mid %llu\n",
1562 (unsigned long long)mid ));
1563
1564 tevent_schedule_immediate(state->im,
1565 smb2req->sconn->ev_ctx,
1566 smbd_smb2_create_request_dispatch_immediate,
1567 smb2req);
1568
1569 return true;
1570 }
1571
1572 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1573 {
1574 struct smbd_smb2_request *smb2req = NULL;
1575 struct smbd_smb2_create_state *state = tevent_req_data(req,
1576 struct smbd_smb2_create_state);
1577 uint64_t mid;
1578
1579 if (!state) {
1580 return false;
1581 }
1582
1583 if (!state->smb2req) {
1584 return false;
1585 }
1586
1587 smb2req = state->smb2req;
1588 mid = get_mid_from_smb2req(smb2req);
1589
1590 if (is_deferred_open_async(state->open_rec)) {
1591 /* Can't cancel an async create. */
1592 return false;
1593 }
1594
1595 remove_deferred_open_message_smb2_internal(smb2req, mid);
1596
1597 tevent_req_defer_callback(req, smb2req->sconn->ev_ctx);
1598 tevent_req_nterror(req, NT_STATUS_CANCELLED);
1599 return true;
1600 }
1601
1602 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1603 struct timeval request_time,
1604 struct timeval timeout,
1605 struct file_id id,
1606 struct deferred_open_record *open_rec)
1607 {
1608 struct tevent_req *req = NULL;
1609 struct smbd_smb2_create_state *state = NULL;
1610 struct timeval end_time;
1611
1612 if (!smb2req) {
1613 return false;
1614 }
1615 req = smb2req->subreq;
1616 if (!req) {
1617 return false;
1618 }
1619 state = tevent_req_data(req, struct smbd_smb2_create_state);
1620 if (!state) {
1621 return false;
1622 }
1623 state->id = id;
1624 state->request_time = request_time;
1625 state->open_rec = talloc_move(state, &open_rec);
1626
1627 /* Re-schedule us to retry on timer expiry. */
1628 end_time = timeval_sum(&request_time, &timeout);
1629
1630 DEBUG(10,("push_deferred_open_message_smb2: "
1631 "timeout at %s\n",
1632 timeval_string(talloc_tos(),
1633 &end_time,
1634 true) ));
1635
1636 state->open_was_deferred = true;
1637
1638 /* allow this request to be canceled */
1639 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1640
1641 return true;
1642 }
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