?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
smbd: Remove an unused #include
[Samba.git] / source3 / smbd / smb2_create.c
blobc9cc9bd0d7daf16ce8f758c4e30c64aa25b60870
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
679 exta = smb2_create_blob_find(&in_context_blobs,
680 SMB2_CREATE_TAG_EXTA);
681 mxac = smb2_create_blob_find(&in_context_blobs,
682 SMB2_CREATE_TAG_MXAC);
683 secd = smb2_create_blob_find(&in_context_blobs,
684 SMB2_CREATE_TAG_SECD);
685 alsi = smb2_create_blob_find(&in_context_blobs,
686 SMB2_CREATE_TAG_ALSI);
687 twrp = smb2_create_blob_find(&in_context_blobs,
688 SMB2_CREATE_TAG_TWRP);
689 qfid = smb2_create_blob_find(&in_context_blobs,
690 SMB2_CREATE_TAG_QFID);
691
692 fname = talloc_strdup(state, in_name);
693 if (tevent_req_nomem(fname, req)) {
694 return tevent_req_post(req, ev);
695 }
696
697 if (exta) {
698 ea_list = read_nttrans_ea_list(mem_ctx,
699 (const char *)exta->data.data, exta->data.length);
700 if (!ea_list) {
701 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
702 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
703 return tevent_req_post(req, ev);
704 }
705
706 if (ea_list_has_invalid_name(ea_list)) {
707 tevent_req_nterror(req, STATUS_INVALID_EA_NAME);
708 return tevent_req_post(req, ev);
709 }
710 }
711
712 if (mxac) {
713 if (mxac->data.length == 0) {
714 max_access_time = 0;
715 } else if (mxac->data.length == 8) {
716 max_access_time = BVAL(mxac->data.data, 0);
717 } else {
718 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
719 return tevent_req_post(req, ev);
720 }
721 }
722
723 if (secd) {
724 enum ndr_err_code ndr_err;
725
726 sec_desc = talloc_zero(state, struct security_descriptor);
727 if (tevent_req_nomem(sec_desc, req)) {
728 return tevent_req_post(req, ev);
729 }
730
731 ndr_err = ndr_pull_struct_blob(&secd->data,
732 sec_desc, sec_desc,
733 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
734 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
735 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
736 ndr_errstr(ndr_err)));
737 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
738 return tevent_req_post(req, ev);
739 }
740 }
741
742 if (dhnq) {
743 if (dhnq->data.length != 16) {
744 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
745 return tevent_req_post(req, ev);
746 }
747
748 if (dh2q) {
749 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
750 return tevent_req_post(req, ev);
751 }
752
753 /*
754 * durable handle request is processed below.
755 */
756 durable_requested = true;
757 /*
758 * Set the timeout to 16 mins.
759 *
760 * TODO: test this against Windows 2012
761 * as the default for durable v2 is 1 min.
762 */
763 durable_timeout_msec = (16*60*1000);
764 }
765
766 if (dh2q) {
767 const uint8_t *p = dh2q->data.data;
768 uint32_t durable_v2_timeout = 0;
769 DATA_BLOB create_guid_blob;
770
771 if (dh2q->data.length != 32) {
772 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
773 return tevent_req_post(req, ev);
774 }
775
776 if (dhnq) {
777 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
778 return tevent_req_post(req, ev);
779 }
780
781 durable_v2_timeout = IVAL(p, 0);
782 create_guid_blob = data_blob_const(p + 16, 16);
783
784 status = GUID_from_ndr_blob(&create_guid_blob,
785 &_create_guid);
786 if (tevent_req_nterror(req, status)) {
787 return tevent_req_post(req, ev);
788 }
789 create_guid = &_create_guid;
790 /*
791 * we need to store the create_guid later
792 */
793 update_open = true;
794
795 /*
796 * durable handle v2 request processed below
797 */
798 durable_requested = true;
799 durable_timeout_msec = durable_v2_timeout;
800 if (durable_timeout_msec == 0) {
801 /*
802 * Set the timeout to 1 min as default.
803 *
804 * This matches Windows 2012.
805 */
806 durable_timeout_msec = (60*1000);
807 }
808 }
809
810 if (dhnc) {
811 persistent_id = BVAL(dhnc->data.data, 0);
812
813 do_durable_reconnect = true;
814 }
815
816 if (dh2c) {
817 const uint8_t *p = dh2c->data.data;
818 DATA_BLOB create_guid_blob;
819
820 persistent_id = BVAL(p, 0);
821 create_guid_blob = data_blob_const(p + 16, 16);
822
823 status = GUID_from_ndr_blob(&create_guid_blob,
824 &_create_guid);
825 if (tevent_req_nterror(req, status)) {
826 return tevent_req_post(req, ev);
827 }
828 create_guid = &_create_guid;
829
830 do_durable_reconnect = true;
831 }
832
833 if (alsi) {
834 if (alsi->data.length != 8) {
835 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
836 return tevent_req_post(req, ev);
837 }
838 allocation_size = BVAL(alsi->data.data, 0);
839 }
840
841 if (twrp) {
842 NTTIME nttime;
843 time_t t;
844 struct tm *tm;
845
846 if (twrp->data.length != 8) {
847 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
848 return tevent_req_post(req, ev);
849 }
850
851 nttime = BVAL(twrp->data.data, 0);
852 t = nt_time_to_unix(nttime);
853 tm = gmtime(&t);
854
855 TALLOC_FREE(fname);
856 fname = talloc_asprintf(state,
857 "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
858 tm->tm_year + 1900,
859 tm->tm_mon + 1,
860 tm->tm_mday,
861 tm->tm_hour,
862 tm->tm_min,
863 tm->tm_sec,
864 in_name);
865 if (tevent_req_nomem(fname, req)) {
866 return tevent_req_post(req, ev);
867 }
868 }
869
870 if (qfid) {
871 if (qfid->data.length != 0) {
872 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
873 return tevent_req_post(req, ev);
874 }
875 }
876
877 if (rqls) {
878 lease_len = smb2_lease_pull(
879 rqls->data.data, rqls->data.length, &lease);
880 if (lease_len == -1) {
881 tevent_req_nterror(
882 req, NT_STATUS_INVALID_PARAMETER);
883 return tevent_req_post(req, ev);
884 }
885 lease_ptr = &lease;
886
887 if (DEBUGLEVEL >= 10) {
888 DEBUG(10, ("Got lease request size %d\n",
889 (int)lease_len));
890 NDR_PRINT_DEBUG(smb2_lease, lease_ptr);
891 }
892
893 if (!smb2_lease_key_valid(&lease.lease_key)) {
894 lease_ptr = NULL;
895 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
896 }
897
898 if ((smb2req->xconn->protocol < PROTOCOL_SMB3_00) &&
899 (lease.lease_version != 1)) {
900 DEBUG(10, ("v2 lease key only for SMB3\n"));
901 lease_ptr = NULL;
902 }
903 }
904
905 /* these are ignored for SMB2 */
906 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
907 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
908
909 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
910
911 DEBUG(10, ("smbd_smb2_create_send: open execution phase\n"));
912
913 /*
914 * For the backend file open procedure, there are
915 * two possible modes: durable_reconnect or not.
916 */
917 if (do_durable_reconnect) {
918 DATA_BLOB new_cookie = data_blob_null;
919 NTTIME now = timeval_to_nttime(&smb2req->request_time);
920
921 status = smb2srv_open_recreate(smb2req->xconn,
922 smb1req->conn->session_info,
923 persistent_id, create_guid,
924 now, &op);
925 if (!NT_STATUS_IS_OK(status)) {
926 DEBUG(3, ("smbd_smb2_create_send: "
927 "smb2srv_open_recreate failed: %s\n",
928 nt_errstr(status)));
929 tevent_req_nterror(req, status);
930 return tevent_req_post(req, ev);
931 }
932
933 DEBUG(10, ("smb2_create_send: %s to recreate the "
934 "smb2srv_open struct for a durable handle.\n",
935 op->global->durable ? "succeded" : "failed"));
936
937 if (!op->global->durable) {
938 talloc_free(op);
939 tevent_req_nterror(req,
940 NT_STATUS_OBJECT_NAME_NOT_FOUND);
941 return tevent_req_post(req, ev);
942 }
943
944 status = SMB_VFS_DURABLE_RECONNECT(smb1req->conn,
945 smb1req,
946 op, /* smbXsrv_open input */
947 op->global->backend_cookie,
948 op, /* TALLOC_CTX */
949 &result, &new_cookie);
950 if (!NT_STATUS_IS_OK(status)) {
951 NTSTATUS return_status;
952
953 return_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
954
955 DEBUG(3, ("smbd_smb2_create_send: "
956 "durable_reconnect failed: %s => %s\n",
957 nt_errstr(status),
958 nt_errstr(return_status)));
959
960 tevent_req_nterror(req, return_status);
961 return tevent_req_post(req, ev);
962 }
963
964 DEBUG(10, ("result->oplock_type=%u, lease_ptr==%p\n",
965 (unsigned)result->oplock_type, lease_ptr));
966
967 status = smbd_smb2_create_durable_lease_check(
968 fname, result, lease_ptr);
969 if (!NT_STATUS_IS_OK(status)) {
970 close_file(smb1req, result, SHUTDOWN_CLOSE);
971 tevent_req_nterror(req, status);
972 return tevent_req_post(req, ev);
973 }
974
975 data_blob_free(&op->global->backend_cookie);
976 op->global->backend_cookie = new_cookie;
977
978 op->status = NT_STATUS_OK;
979 op->global->disconnect_time = 0;
980
981 /* save the timout for later update */
982 durable_timeout_msec = op->global->durable_timeout_msec;
983
984 update_open = true;
985
986 info = FILE_WAS_OPENED;
987 } else {
988 struct smb_filename *smb_fname = NULL;
989
990 if (requested_oplock_level == SMB2_OPLOCK_LEVEL_LEASE) {
991 if (lease_ptr == NULL) {
992 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
993 }
994 } else {
995 lease_ptr = NULL;
996 }
997
998 /*
999 * For a DFS path the function parse_dfs_path()
1000 * will do the path processing.
1001 */
1002
1003 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
1004 /* convert '\\' into '/' */
1005 status = check_path_syntax(fname);
1006 if (!NT_STATUS_IS_OK(status)) {
1007 tevent_req_nterror(req, status);
1008 return tevent_req_post(req, ev);
1009 }
1010 }
1011
1012 status = filename_convert(req,
1013 smb1req->conn,
1014 smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
1015 fname,
1016 UCF_PREP_CREATEFILE,
1017 NULL, /* ppath_contains_wcards */
1018 &smb_fname);
1019 if (!NT_STATUS_IS_OK(status)) {
1020 tevent_req_nterror(req, status);
1021 return tevent_req_post(req, ev);
1022 }
1023
1024 /*
1025 * MS-SMB2: 2.2.13 SMB2 CREATE Request
1026 * ImpersonationLevel ... MUST contain one of the
1027 * following values. The server MUST validate this
1028 * field, but otherwise ignore it.
1029 *
1030 * NB. The source4/torture/smb2/durable_open.c test
1031 * shows this check is only done on real opens, not
1032 * on durable handle-reopens.
1033 */
1034
1035 if (in_impersonation_level >
1036 SMB2_IMPERSONATION_DELEGATE) {
1037 tevent_req_nterror(req,
1038 NT_STATUS_BAD_IMPERSONATION_LEVEL);
1039 return tevent_req_post(req, ev);
1040 }
1041
1042 /*
1043 * We know we're going to do a local open, so now
1044 * we must be protocol strict. JRA.
1045 *
1046 * MS-SMB2: 3.3.5.9 - Receiving an SMB2 CREATE Request
1047 * If the file name length is greater than zero and the
1048 * first character is a path separator character, the
1049 * server MUST fail the request with
1050 * STATUS_INVALID_PARAMETER.
1051 */
1052 if (in_name[0] == '\\' || in_name[0] == '/') {
1053 tevent_req_nterror(req,
1054 NT_STATUS_INVALID_PARAMETER);
1055 return tevent_req_post(req, ev);
1056 }
1057
1058 status = SMB_VFS_CREATE_FILE(smb1req->conn,
1059 smb1req,
1060 0, /* root_dir_fid */
1061 smb_fname,
1062 in_desired_access,
1063 in_share_access,
1064 in_create_disposition,
1065 in_create_options,
1066 in_file_attributes,
1067 map_smb2_oplock_levels_to_samba(requested_oplock_level),
1068 lease_ptr,
1069 allocation_size,
1070 0, /* private_flags */
1071 sec_desc,
1072 ea_list,
1073 &result,
1074 &info,
1075 &in_context_blobs,
1076 state->out_context_blobs);
1077 if (!NT_STATUS_IS_OK(status)) {
1078 if (open_was_deferred(smb1req->xconn, smb1req->mid)) {
1079 SMBPROFILE_IOBYTES_ASYNC_SET_IDLE(smb2req->profile);
1080 return req;
1081 }
1082 tevent_req_nterror(req, status);
1083 return tevent_req_post(req, ev);
1084 }
1085 op = result->op;
1086 }
1087
1088 /*
1089 * here we have op == result->op
1090 */
1091
1092 DEBUG(10, ("smbd_smb2_create_send: "
1093 "response construction phase\n"));
1094
1095 if (mxac) {
1096 NTTIME last_write_time;
1097
1098 last_write_time = unix_timespec_to_nt_time(
1099 result->fsp_name->st.st_ex_mtime);
1100 if (last_write_time != max_access_time) {
1101 uint8_t p[8];
1102 uint32_t max_access_granted;
1103 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1104
1105 status = smbd_calculate_access_mask(smb1req->conn,
1106 result->fsp_name,
1107 false,
1108 SEC_FLAG_MAXIMUM_ALLOWED,
1109 &max_access_granted);
1110
1111 SIVAL(p, 0, NT_STATUS_V(status));
1112 SIVAL(p, 4, max_access_granted);
1113
1114 status = smb2_create_blob_add(
1115 state->out_context_blobs,
1116 state->out_context_blobs,
1117 SMB2_CREATE_TAG_MXAC,
1118 blob);
1119 if (!NT_STATUS_IS_OK(status)) {
1120 tevent_req_nterror(req, status);
1121 return tevent_req_post(req, ev);
1122 }
1123 }
1124 }
1125
1126 if (durable_requested &&
1127 (fsp_lease_type(result) & SMB2_LEASE_HANDLE))
1128 {
1129 status = SMB_VFS_DURABLE_COOKIE(result,
1130 op,
1131 &op->global->backend_cookie);
1132 if (!NT_STATUS_IS_OK(status)) {
1133 op->global->backend_cookie = data_blob_null;
1134 }
1135 }
1136 if (op->global->backend_cookie.length > 0) {
1137 update_open = true;
1138
1139 op->global->durable = true;
1140 op->global->durable_timeout_msec = durable_timeout_msec;
1141 }
1142
1143 if (update_open) {
1144 op->global->create_guid = _create_guid;
1145
1146 status = smbXsrv_open_update(op);
1147 DEBUG(10, ("smb2_create_send: smbXsrv_open_update "
1148 "returned %s\n",
1149 nt_errstr(status)));
1150 if (!NT_STATUS_IS_OK(status)) {
1151 tevent_req_nterror(req, status);
1152 return tevent_req_post(req, ev);
1153 }
1154 }
1155
1156 if (dhnq && op->global->durable) {
1157 uint8_t p[8] = { 0, };
1158 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1159
1160 status = smb2_create_blob_add(state->out_context_blobs,
1161 state->out_context_blobs,
1162 SMB2_CREATE_TAG_DHNQ,
1163 blob);
1164 if (!NT_STATUS_IS_OK(status)) {
1165 tevent_req_nterror(req, status);
1166 return tevent_req_post(req, ev);
1167 }
1168 }
1169
1170 if (dh2q && op->global->durable) {
1171 uint8_t p[8] = { 0, };
1172 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1173 uint32_t durable_v2_response_flags = 0;
1174
1175 SIVAL(p, 0, op->global->durable_timeout_msec);
1176 SIVAL(p, 4, durable_v2_response_flags);
1177
1178 status = smb2_create_blob_add(state->out_context_blobs,
1179 state->out_context_blobs,
1180 SMB2_CREATE_TAG_DH2Q,
1181 blob);
1182 if (!NT_STATUS_IS_OK(status)) {
1183 tevent_req_nterror(req, status);
1184 return tevent_req_post(req, ev);
1185 }
1186 }
1187
1188 if (qfid) {
1189 uint8_t p[32];
1190 uint64_t file_index = get_FileIndex(result->conn,
1191 &result->fsp_name->st);
1192 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1193
1194 ZERO_STRUCT(p);
1195
1196 /* From conversations with Microsoft engineers at
1197 the MS plugfest. The first 8 bytes are the "volume index"
1198 == inode, the second 8 bytes are the "volume id",
1199 == dev. This will be updated in the SMB2 doc. */
1200 SBVAL(p, 0, file_index);
1201 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
1202
1203 status = smb2_create_blob_add(state->out_context_blobs,
1204 state->out_context_blobs,
1205 SMB2_CREATE_TAG_QFID,
1206 blob);
1207 if (!NT_STATUS_IS_OK(status)) {
1208 tevent_req_nterror(req, status);
1209 return tevent_req_post(req, ev);
1210 }
1211 }
1212
1213 if ((rqls != NULL) && (result->oplock_type == LEASE_OPLOCK)) {
1214 uint8_t buf[52];
1215
1216 lease = result->lease->lease;
1217
1218 lease_len = sizeof(buf);
1219 if (lease.lease_version == 1) {
1220 lease_len = 32;
1221 }
1222
1223 if (!smb2_lease_push(&lease, buf, lease_len)) {
1224 tevent_req_nterror(
1225 req, NT_STATUS_INTERNAL_ERROR);
1226 return tevent_req_post(req, ev);
1227 }
1228
1229 status = smb2_create_blob_add(
1230 state, state->out_context_blobs,
1231 SMB2_CREATE_TAG_RQLS,
1232 data_blob_const(buf, lease_len));
1233 if (!NT_STATUS_IS_OK(status)) {
1234 tevent_req_nterror(req, status);
1235 return tevent_req_post(req, ev);
1236 }
1237 }
1238 }
1239
1240 smb2req->compat_chain_fsp = smb1req->chain_fsp;
1241
1242 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
1243 state->out_oplock_level = in_oplock_level;
1244 } else {
1245 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
1246 }
1247
1248 if ((in_create_disposition == FILE_SUPERSEDE)
1249 && (info == FILE_WAS_OVERWRITTEN)) {
1250 state->out_create_action = FILE_WAS_SUPERSEDED;
1251 } else {
1252 state->out_create_action = info;
1253 }
1254 state->out_file_attributes = dos_mode(result->conn,
1255 result->fsp_name);
1256
1257 state->out_creation_ts = get_create_timespec(smb1req->conn,
1258 result, result->fsp_name);
1259 state->out_last_access_ts = result->fsp_name->st.st_ex_atime;
1260 state->out_last_write_ts = result->fsp_name->st.st_ex_mtime;
1261 state->out_change_ts = get_change_timespec(smb1req->conn,
1262 result, result->fsp_name);
1263 state->out_allocation_size =
1264 SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
1265 &(result->fsp_name->st));
1266 state->out_end_of_file = result->fsp_name->st.st_ex_size;
1267 if (state->out_file_attributes == 0) {
1268 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
1269 }
1270 state->out_file_id_persistent = result->op->global->open_persistent_id;
1271 state->out_file_id_volatile = result->op->global->open_volatile_id;
1272
1273 DEBUG(10,("smbd_smb2_create_send: %s - %s\n",
1274 fsp_str_dbg(result), fsp_fnum_dbg(result)));
1275
1276 tevent_req_done(req);
1277 return tevent_req_post(req, ev);
1278 }
1279
1280 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
1281 TALLOC_CTX *mem_ctx,
1282 uint8_t *out_oplock_level,
1283 uint32_t *out_create_action,
1284 struct timespec *out_creation_ts,
1285 struct timespec *out_last_access_ts,
1286 struct timespec *out_last_write_ts,
1287 struct timespec *out_change_ts,
1288 uint64_t *out_allocation_size,
1289 uint64_t *out_end_of_file,
1290 uint32_t *out_file_attributes,
1291 uint64_t *out_file_id_persistent,
1292 uint64_t *out_file_id_volatile,
1293 struct smb2_create_blobs *out_context_blobs)
1294 {
1295 NTSTATUS status;
1296 struct smbd_smb2_create_state *state = tevent_req_data(req,
1297 struct smbd_smb2_create_state);
1298
1299 if (tevent_req_is_nterror(req, &status)) {
1300 tevent_req_received(req);
1301 return status;
1302 }
1303
1304 *out_oplock_level = state->out_oplock_level;
1305 *out_create_action = state->out_create_action;
1306 *out_creation_ts = state->out_creation_ts;
1307 *out_last_access_ts = state->out_last_access_ts;
1308 *out_last_write_ts = state->out_last_write_ts;
1309 *out_change_ts = state->out_change_ts;
1310 *out_allocation_size = state->out_allocation_size;
1311 *out_end_of_file = state->out_end_of_file;
1312 *out_file_attributes = state->out_file_attributes;
1313 *out_file_id_persistent = state->out_file_id_persistent;
1314 *out_file_id_volatile = state->out_file_id_volatile;
1315 *out_context_blobs = *(state->out_context_blobs);
1316
1317 talloc_steal(mem_ctx, state->out_context_blobs->blobs);
1318
1319 tevent_req_received(req);
1320 return NT_STATUS_OK;
1321 }
1322
1323 /*********************************************************
1324 Code for dealing with deferred opens.
1325 *********************************************************/
1326
1327 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1328 struct timeval *p_request_time,
1329 struct deferred_open_record **open_rec)
1330 {
1331 struct smbd_smb2_create_state *state = NULL;
1332 struct tevent_req *req = NULL;
1333
1334 if (!smb2req) {
1335 return false;
1336 }
1337 req = smb2req->subreq;
1338 if (!req) {
1339 return false;
1340 }
1341 state = tevent_req_data(req, struct smbd_smb2_create_state);
1342 if (!state) {
1343 return false;
1344 }
1345 if (!state->open_was_deferred) {
1346 return false;
1347 }
1348 if (p_request_time) {
1349 *p_request_time = state->request_time;
1350 }
1351 if (open_rec != NULL) {
1352 *open_rec = state->open_rec;
1353 }
1354 return true;
1355 }
1356
1357 /*********************************************************
1358 Re-process this call early - requested by message or
1359 close.
1360 *********************************************************/
1361
1362 static struct smbd_smb2_request *find_open_smb2req(
1363 struct smbXsrv_connection *xconn, uint64_t mid)
1364 {
1365 struct smbd_smb2_request *smb2req;
1366
1367 for (smb2req = xconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1368 uint64_t message_id;
1369 if (smb2req->subreq == NULL) {
1370 /* This message has been processed. */
1371 continue;
1372 }
1373 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1374 /* This message has been processed. */
1375 continue;
1376 }
1377 message_id = get_mid_from_smb2req(smb2req);
1378 if (message_id == mid) {
1379 return smb2req;
1380 }
1381 }
1382 return NULL;
1383 }
1384
1385 bool open_was_deferred_smb2(struct smbXsrv_connection *xconn, uint64_t mid)
1386 {
1387 struct smbd_smb2_create_state *state = NULL;
1388 struct smbd_smb2_request *smb2req;
1389
1390 smb2req = find_open_smb2req(xconn, mid);
1391
1392 if (!smb2req) {
1393 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1394 (unsigned long long)mid));
1395 return false;
1396 }
1397 if (!smb2req->subreq) {
1398 return false;
1399 }
1400 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1401 return false;
1402 }
1403 state = tevent_req_data(smb2req->subreq,
1404 struct smbd_smb2_create_state);
1405 if (!state) {
1406 return false;
1407 }
1408 /* It's not in progress if there's no timeout event. */
1409 if (!state->open_was_deferred) {
1410 return false;
1411 }
1412
1413 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1414 (unsigned long long)mid));
1415
1416 return true;
1417 }
1418
1419 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1420 uint64_t mid)
1421 {
1422 struct smbd_smb2_create_state *state = NULL;
1423
1424 if (!smb2req->subreq) {
1425 return;
1426 }
1427 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1428 return;
1429 }
1430 state = tevent_req_data(smb2req->subreq,
1431 struct smbd_smb2_create_state);
1432 if (!state) {
1433 return;
1434 }
1435
1436 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1437 "mid %llu\n",
1438 (unsigned long long)mid ));
1439
1440 state->open_was_deferred = false;
1441 /* Ensure we don't have any outstanding timer event. */
1442 TALLOC_FREE(state->te);
1443 /* Ensure we don't have any outstanding immediate event. */
1444 TALLOC_FREE(state->im);
1445 }
1446
1447 void remove_deferred_open_message_smb2(
1448 struct smbXsrv_connection *xconn, uint64_t mid)
1449 {
1450 struct smbd_smb2_request *smb2req;
1451
1452 smb2req = find_open_smb2req(xconn, mid);
1453
1454 if (!smb2req) {
1455 DEBUG(10,("remove_deferred_open_message_smb2: "
1456 "can't find mid %llu\n",
1457 (unsigned long long)mid ));
1458 return;
1459 }
1460 remove_deferred_open_message_smb2_internal(smb2req, mid);
1461 }
1462
1463 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1464 struct tevent_immediate *im,
1465 void *private_data)
1466 {
1467 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1468 struct smbd_smb2_request);
1469 uint64_t mid = get_mid_from_smb2req(smb2req);
1470 NTSTATUS status;
1471
1472 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1473 "re-dispatching mid %llu\n",
1474 (unsigned long long)mid ));
1475
1476 status = smbd_smb2_request_dispatch(smb2req);
1477 if (!NT_STATUS_IS_OK(status)) {
1478 smbd_server_connection_terminate(smb2req->xconn,
1479 nt_errstr(status));
1480 return;
1481 }
1482 }
1483
1484 bool schedule_deferred_open_message_smb2(
1485 struct smbXsrv_connection *xconn, uint64_t mid)
1486 {
1487 struct smbd_smb2_create_state *state = NULL;
1488 struct smbd_smb2_request *smb2req;
1489
1490 smb2req = find_open_smb2req(xconn, mid);
1491
1492 if (!smb2req) {
1493 DEBUG(10,("schedule_deferred_open_message_smb2: "
1494 "can't find mid %llu\n",
1495 (unsigned long long)mid ));
1496 return false;
1497 }
1498 if (!smb2req->subreq) {
1499 return false;
1500 }
1501 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1502 return false;
1503 }
1504 state = tevent_req_data(smb2req->subreq,
1505 struct smbd_smb2_create_state);
1506 if (!state) {
1507 return false;
1508 }
1509
1510 /* Ensure we don't have any outstanding timer event. */
1511 TALLOC_FREE(state->te);
1512 /* Ensure we don't have any outstanding immediate event. */
1513 TALLOC_FREE(state->im);
1514
1515 /*
1516 * This is subtle. We must null out the callback
1517 * before rescheduling, else the first call to
1518 * tevent_req_nterror() causes the _receive()
1519 * function to be called, this causing tevent_req_post()
1520 * to crash.
1521 */
1522 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1523
1524 state->im = tevent_create_immediate(smb2req);
1525 if (!state->im) {
1526 smbd_server_connection_terminate(smb2req->xconn,
1527 nt_errstr(NT_STATUS_NO_MEMORY));
1528 return false;
1529 }
1530
1531 DEBUG(10,("schedule_deferred_open_message_smb2: "
1532 "re-processing mid %llu\n",
1533 (unsigned long long)mid ));
1534
1535 tevent_schedule_immediate(state->im,
1536 smb2req->sconn->ev_ctx,
1537 smbd_smb2_create_request_dispatch_immediate,
1538 smb2req);
1539
1540 return true;
1541 }
1542
1543 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1544 {
1545 struct smbd_smb2_request *smb2req = NULL;
1546 struct smbd_smb2_create_state *state = tevent_req_data(req,
1547 struct smbd_smb2_create_state);
1548 uint64_t mid;
1549
1550 if (!state) {
1551 return false;
1552 }
1553
1554 if (!state->smb2req) {
1555 return false;
1556 }
1557
1558 smb2req = state->smb2req;
1559 mid = get_mid_from_smb2req(smb2req);
1560
1561 if (is_deferred_open_async(state->open_rec)) {
1562 /* Can't cancel an async create. */
1563 return false;
1564 }
1565
1566 remove_deferred_open_message_smb2_internal(smb2req, mid);
1567
1568 tevent_req_defer_callback(req, smb2req->sconn->ev_ctx);
1569 tevent_req_nterror(req, NT_STATUS_CANCELLED);
1570 return true;
1571 }
1572
1573 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1574 struct timeval request_time,
1575 struct timeval timeout,
1576 struct file_id id,
1577 struct deferred_open_record *open_rec)
1578 {
1579 struct tevent_req *req = NULL;
1580 struct smbd_smb2_create_state *state = NULL;
1581 struct timeval end_time;
1582
1583 if (!smb2req) {
1584 return false;
1585 }
1586 req = smb2req->subreq;
1587 if (!req) {
1588 return false;
1589 }
1590 state = tevent_req_data(req, struct smbd_smb2_create_state);
1591 if (!state) {
1592 return false;
1593 }
1594 state->id = id;
1595 state->request_time = request_time;
1596 state->open_rec = talloc_move(state, &open_rec);
1597
1598 /* Re-schedule us to retry on timer expiry. */
1599 end_time = timeval_sum(&request_time, &timeout);
1600
1601 DEBUG(10,("push_deferred_open_message_smb2: "
1602 "timeout at %s\n",
1603 timeval_string(talloc_tos(),
1604 &end_time,
1605 true) ));
1606
1607 state->open_was_deferred = true;
1608
1609 /* allow this request to be canceled */
1610 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1611
1612 return true;
1613 }
Samba GIT mirror